[PATCH v1 1/3] drm/msm/edp: support multiple generations of edp hardware

There is a new generation of eDP controller and phy hardware which has many major changes from the previous generation. there is a need to support the next generation hardware without disturbing the backward compatibility with the previous generation hardware.

This change will enable support for multiple generations eDP controller and phy hardware which can be enabled as needed.

Signed-off-by: Sankeerth Billakanti sbillaka@codeaurora.org --- drivers/gpu/drm/msm/Makefile | 13 +- drivers/gpu/drm/msm/edp/edp.c | 198 --- drivers/gpu/drm/msm/edp/edp.h | 78 -- drivers/gpu/drm/msm/edp/edp.xml.h | 380 ------ drivers/gpu/drm/msm/edp/edp_aux.c | 264 ---- drivers/gpu/drm/msm/edp/edp_bridge.c | 111 -- drivers/gpu/drm/msm/edp/edp_common.c | 34 + drivers/gpu/drm/msm/edp/edp_common.h | 41 + drivers/gpu/drm/msm/edp/edp_connector.c | 132 -- drivers/gpu/drm/msm/edp/edp_ctrl.c | 1375 --------------------- drivers/gpu/drm/msm/edp/edp_phy.c | 98 -- drivers/gpu/drm/msm/edp/v200/edp.xml.h | 380 ++++++ drivers/gpu/drm/msm/edp/v200/edp_v200.c | 210 ++++ drivers/gpu/drm/msm/edp/v200/edp_v200.h | 70 ++ drivers/gpu/drm/msm/edp/v200/edp_v200_aux.c | 264 ++++ drivers/gpu/drm/msm/edp/v200/edp_v200_bridge.c | 111 ++ drivers/gpu/drm/msm/edp/v200/edp_v200_connector.c | 132 ++ drivers/gpu/drm/msm/edp/v200/edp_v200_ctrl.c | 1375 +++++++++++++++++++++ drivers/gpu/drm/msm/edp/v200/edp_v200_phy.c | 98 ++ 19 files changed, 2722 insertions(+), 2642 deletions(-) delete mode 100644 drivers/gpu/drm/msm/edp/edp.c delete mode 100644 drivers/gpu/drm/msm/edp/edp.h delete mode 100644 drivers/gpu/drm/msm/edp/edp.xml.h delete mode 100644 drivers/gpu/drm/msm/edp/edp_aux.c delete mode 100644 drivers/gpu/drm/msm/edp/edp_bridge.c create mode 100644 drivers/gpu/drm/msm/edp/edp_common.c create mode 100644 drivers/gpu/drm/msm/edp/edp_common.h delete mode 100644 drivers/gpu/drm/msm/edp/edp_connector.c delete mode 100644 drivers/gpu/drm/msm/edp/edp_ctrl.c delete mode 100644 drivers/gpu/drm/msm/edp/edp_phy.c create mode 100644 drivers/gpu/drm/msm/edp/v200/edp.xml.h create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200.c create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200.h create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200_aux.c create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200_bridge.c create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200_connector.c create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200_ctrl.c create mode 100644 drivers/gpu/drm/msm/edp/v200/edp_v200_phy.c

diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index 610d630..0a4ff4ea 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -25,12 +25,13 @@ msm-y := \ hdmi/hdmi_phy_8960.o \ hdmi/hdmi_phy_8x60.o \ hdmi/hdmi_phy_8x74.o \ - edp/edp.o \ - edp/edp_aux.o \ - edp/edp_bridge.o \ - edp/edp_connector.o \ - edp/edp_ctrl.o \ - edp/edp_phy.o \ + edp/edp_common.o \ + edp/v200/edp_v200.o \ + edp/v200/edp_v200_aux.o \ + edp/v200/edp_v200_bridge.o \ + edp/v200/edp_v200_connector.o \ + edp/v200/edp_v200_ctrl.o \ + edp/v200/edp_v200_phy.o \ disp/mdp_format.o \ disp/mdp_kms.o \ disp/mdp4/mdp4_crtc.o \ diff --git a/drivers/gpu/drm/msm/edp/edp.c b/drivers/gpu/drm/msm/edp/edp.c deleted file mode 100644 index 106a674..0000000 --- a/drivers/gpu/drm/msm/edp/edp.c +++ /dev/null @@ -1,198 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#include <linux/of_irq.h> -#include "edp.h" - -static irqreturn_t edp_irq(int irq, void *dev_id) -{ - struct msm_edp *edp = dev_id; - - /* Process eDP irq */ - return msm_edp_ctrl_irq(edp->ctrl); -} - -static void edp_destroy(struct platform_device *pdev) -{ - struct msm_edp *edp = platform_get_drvdata(pdev); - - if (!edp) - return; - - if (edp->ctrl) { - msm_edp_ctrl_destroy(edp->ctrl); - edp->ctrl = NULL; - } - - platform_set_drvdata(pdev, NULL); -} - -/* construct eDP at bind/probe time, grab all the resources. */ -static struct msm_edp *edp_init(struct platform_device *pdev) -{ - struct msm_edp *edp = NULL; - int ret; - - if (!pdev) { - pr_err("no eDP device\n"); - ret = -ENXIO; - goto fail; - } - - edp = devm_kzalloc(&pdev->dev, sizeof(*edp), GFP_KERNEL); - if (!edp) { - ret = -ENOMEM; - goto fail; - } - DBG("eDP probed=%p", edp); - - edp->pdev = pdev; - platform_set_drvdata(pdev, edp); - - ret = msm_edp_ctrl_init(edp); - if (ret) - goto fail; - - return edp; - -fail: - if (edp) - edp_destroy(pdev); - - return ERR_PTR(ret); -} - -static int edp_bind(struct device *dev, struct device *master, void *data) -{ - struct drm_device *drm = dev_get_drvdata(master); - struct msm_drm_private *priv = drm->dev_private; - struct msm_edp *edp; - - DBG(""); - edp = edp_init(to_platform_device(dev)); - if (IS_ERR(edp)) - return PTR_ERR(edp); - priv->edp = edp; - - return 0; -} - -static void edp_unbind(struct device *dev, struct device *master, void *data) -{ - struct drm_device *drm = dev_get_drvdata(master); - struct msm_drm_private *priv = drm->dev_private; - - DBG(""); - if (priv->edp) { - edp_destroy(to_platform_device(dev)); - priv->edp = NULL; - } -} - -static const struct component_ops edp_ops = { - .bind = edp_bind, - .unbind = edp_unbind, -}; - -static int edp_dev_probe(struct platform_device *pdev) -{ - DBG(""); - return component_add(&pdev->dev, &edp_ops); -} - -static int edp_dev_remove(struct platform_device *pdev) -{ - DBG(""); - component_del(&pdev->dev, &edp_ops); - return 0; -} - -static const struct of_device_id dt_match[] = { - { .compatible = "qcom,mdss-edp" }, - {} -}; - -static struct platform_driver edp_driver = { - .probe = edp_dev_probe, - .remove = edp_dev_remove, - .driver = { - .name = "msm_edp", - .of_match_table = dt_match, - }, -}; - -void __init msm_edp_register(void) -{ - DBG(""); - platform_driver_register(&edp_driver); -} - -void __exit msm_edp_unregister(void) -{ - DBG(""); - platform_driver_unregister(&edp_driver); -} - -/* Second part of initialization, the drm/kms level modeset_init */ -int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev, - struct drm_encoder *encoder) -{ - struct platform_device *pdev = edp->pdev; - struct msm_drm_private *priv = dev->dev_private; - int ret; - - edp->encoder = encoder; - edp->dev = dev; - - edp->bridge = msm_edp_bridge_init(edp); - if (IS_ERR(edp->bridge)) { - ret = PTR_ERR(edp->bridge); - DRM_DEV_ERROR(dev->dev, "failed to create eDP bridge: %d\n", ret); - edp->bridge = NULL; - goto fail; - } - - edp->connector = msm_edp_connector_init(edp); - if (IS_ERR(edp->connector)) { - ret = PTR_ERR(edp->connector); - DRM_DEV_ERROR(dev->dev, "failed to create eDP connector: %d\n", ret); - edp->connector = NULL; - goto fail; - } - - edp->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); - if (edp->irq < 0) { - ret = edp->irq; - DRM_DEV_ERROR(dev->dev, "failed to get IRQ: %d\n", ret); - goto fail; - } - - ret = devm_request_irq(&pdev->dev, edp->irq, - edp_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, - "edp_isr", edp); - if (ret < 0) { - DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n", - edp->irq, ret); - goto fail; - } - - priv->bridges[priv->num_bridges++] = edp->bridge; - priv->connectors[priv->num_connectors++] = edp->connector; - - return 0; - -fail: - /* bridge/connector are normally destroyed by drm */ - if (edp->bridge) { - edp_bridge_destroy(edp->bridge); - edp->bridge = NULL; - } - if (edp->connector) { - edp->connector->funcs->destroy(edp->connector); - edp->connector = NULL; - } - - return ret; -} diff --git a/drivers/gpu/drm/msm/edp/edp.h b/drivers/gpu/drm/msm/edp/edp.h deleted file mode 100644 index eb34243..0000000 --- a/drivers/gpu/drm/msm/edp/edp.h +++ /dev/null @@ -1,78 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#ifndef __EDP_CONNECTOR_H__ -#define __EDP_CONNECTOR_H__ - -#include <linux/i2c.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <drm/drm_bridge.h> -#include <drm/drm_crtc.h> -#include <drm/drm_dp_helper.h> - -#include "msm_drv.h" - -#define edp_read(offset) msm_readl((offset)) -#define edp_write(offset, data) msm_writel((data), (offset)) - -struct edp_ctrl; -struct edp_aux; -struct edp_phy; - -struct msm_edp { - struct drm_device *dev; - struct platform_device *pdev; - - struct drm_connector *connector; - struct drm_bridge *bridge; - - /* the encoder we are hooked to (outside of eDP block) */ - struct drm_encoder *encoder; - - struct edp_ctrl *ctrl; - - int irq; -}; - -/* eDP bridge */ -struct drm_bridge *msm_edp_bridge_init(struct msm_edp *edp); -void edp_bridge_destroy(struct drm_bridge *bridge); - -/* eDP connector */ -struct drm_connector *msm_edp_connector_init(struct msm_edp *edp); - -/* AUX */ -void *msm_edp_aux_init(struct device *dev, void __iomem *regbase, - struct drm_dp_aux **drm_aux); -void msm_edp_aux_destroy(struct device *dev, struct edp_aux *aux); -irqreturn_t msm_edp_aux_irq(struct edp_aux *aux, u32 isr); -void msm_edp_aux_ctrl(struct edp_aux *aux, int enable); - -/* Phy */ -bool msm_edp_phy_ready(struct edp_phy *phy); -void msm_edp_phy_ctrl(struct edp_phy *phy, int enable); -void msm_edp_phy_vm_pe_init(struct edp_phy *phy); -void msm_edp_phy_vm_pe_cfg(struct edp_phy *phy, u32 v0, u32 v1); -void msm_edp_phy_lane_power_ctrl(struct edp_phy *phy, bool up, u32 max_lane); -void *msm_edp_phy_init(struct device *dev, void __iomem *regbase); - -/* Ctrl */ -irqreturn_t msm_edp_ctrl_irq(struct edp_ctrl *ctrl); -void msm_edp_ctrl_power(struct edp_ctrl *ctrl, bool on); -int msm_edp_ctrl_init(struct msm_edp *edp); -void msm_edp_ctrl_destroy(struct edp_ctrl *ctrl); -bool msm_edp_ctrl_panel_connected(struct edp_ctrl *ctrl); -int msm_edp_ctrl_get_panel_info(struct edp_ctrl *ctrl, - struct drm_connector *connector, struct edid **edid); -int msm_edp_ctrl_timing_cfg(struct edp_ctrl *ctrl, - const struct drm_display_mode *mode, - const struct drm_display_info *info); -/* @pixel_rate is in kHz */ -bool msm_edp_ctrl_pixel_clock_valid(struct edp_ctrl *ctrl, - u32 pixel_rate, u32 *pm, u32 *pn); - -#endif /* __EDP_CONNECTOR_H__ */ diff --git a/drivers/gpu/drm/msm/edp/edp.xml.h b/drivers/gpu/drm/msm/edp/edp.xml.h deleted file mode 100644 index 7aed6cf..0000000 --- a/drivers/gpu/drm/msm/edp/edp.xml.h +++ /dev/null @@ -1,380 +0,0 @@ -#ifndef EDP_XML -#define EDP_XML - -/* Autogenerated file, DO NOT EDIT manually! - -This file was generated by the rules-ng-ng headergen tool in this git repository: -http://github.com/freedreno/envytools/ -git clone https://github.com/freedreno/envytools.git - -The rules-ng-ng source files this header was generated from are: -- /home/robclark/src/envytools/rnndb/msm.xml ( 676 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/freedreno_copyright.xml ( 1572 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/mdp/mdp4.xml ( 20915 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/mdp/mdp_common.xml ( 2849 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/mdp/mdp5.xml ( 37411 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/dsi/dsi.xml ( 42301 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/dsi/sfpb.xml ( 602 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/dsi/mmss_cc.xml ( 1686 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/hdmi/qfprom.xml ( 600 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/hdmi/hdmi.xml ( 41874 bytes, from 2020-07-23 21:58:14) -- /home/robclark/src/envytools/rnndb/edp/edp.xml ( 10416 bytes, from 2020-07-23 21:58:14) - -Copyright (C) 2013-2020 by the following authors: -- Rob Clark robdclark@gmail.com (robclark) -- Ilia Mirkin imirkin@alum.mit.edu (imirkin) - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice (including the -next paragraph) shall be included in all copies or substantial -portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE -LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -*/ - - -enum edp_color_depth { - EDP_6BIT = 0, - EDP_8BIT = 1, - EDP_10BIT = 2, - EDP_12BIT = 3, - EDP_16BIT = 4, -}; - -enum edp_component_format { - EDP_RGB = 0, - EDP_YUV422 = 1, - EDP_YUV444 = 2, -}; - -#define REG_EDP_MAINLINK_CTRL 0x00000004 -#define EDP_MAINLINK_CTRL_ENABLE 0x00000001 -#define EDP_MAINLINK_CTRL_RESET 0x00000002 - -#define REG_EDP_STATE_CTRL 0x00000008 -#define EDP_STATE_CTRL_TRAIN_PATTERN_1 0x00000001 -#define EDP_STATE_CTRL_TRAIN_PATTERN_2 0x00000002 -#define EDP_STATE_CTRL_TRAIN_PATTERN_3 0x00000004 -#define EDP_STATE_CTRL_SYMBOL_ERR_RATE_MEAS 0x00000008 -#define EDP_STATE_CTRL_PRBS7 0x00000010 -#define EDP_STATE_CTRL_CUSTOM_80_BIT_PATTERN 0x00000020 -#define EDP_STATE_CTRL_SEND_VIDEO 0x00000040 -#define EDP_STATE_CTRL_PUSH_IDLE 0x00000080 - -#define REG_EDP_CONFIGURATION_CTRL 0x0000000c -#define EDP_CONFIGURATION_CTRL_SYNC_CLK 0x00000001 -#define EDP_CONFIGURATION_CTRL_STATIC_MVID 0x00000002 -#define EDP_CONFIGURATION_CTRL_PROGRESSIVE 0x00000004 -#define EDP_CONFIGURATION_CTRL_LANES__MASK 0x00000030 -#define EDP_CONFIGURATION_CTRL_LANES__SHIFT 4 -static inline uint32_t EDP_CONFIGURATION_CTRL_LANES(uint32_t val) -{ - return ((val) << EDP_CONFIGURATION_CTRL_LANES__SHIFT) & EDP_CONFIGURATION_CTRL_LANES__MASK; -} -#define EDP_CONFIGURATION_CTRL_ENHANCED_FRAMING 0x00000040 -#define EDP_CONFIGURATION_CTRL_COLOR__MASK 0x00000100 -#define EDP_CONFIGURATION_CTRL_COLOR__SHIFT 8 -static inline uint32_t EDP_CONFIGURATION_CTRL_COLOR(enum edp_color_depth val) -{ - return ((val) << EDP_CONFIGURATION_CTRL_COLOR__SHIFT) & EDP_CONFIGURATION_CTRL_COLOR__MASK; -} - -#define REG_EDP_SOFTWARE_MVID 0x00000014 - -#define REG_EDP_SOFTWARE_NVID 0x00000018 - -#define REG_EDP_TOTAL_HOR_VER 0x0000001c -#define EDP_TOTAL_HOR_VER_HORIZ__MASK 0x0000ffff -#define EDP_TOTAL_HOR_VER_HORIZ__SHIFT 0 -static inline uint32_t EDP_TOTAL_HOR_VER_HORIZ(uint32_t val) -{ - return ((val) << EDP_TOTAL_HOR_VER_HORIZ__SHIFT) & EDP_TOTAL_HOR_VER_HORIZ__MASK; -} -#define EDP_TOTAL_HOR_VER_VERT__MASK 0xffff0000 -#define EDP_TOTAL_HOR_VER_VERT__SHIFT 16 -static inline uint32_t EDP_TOTAL_HOR_VER_VERT(uint32_t val) -{ - return ((val) << EDP_TOTAL_HOR_VER_VERT__SHIFT) & EDP_TOTAL_HOR_VER_VERT__MASK; -} - -#define REG_EDP_START_HOR_VER_FROM_SYNC 0x00000020 -#define EDP_START_HOR_VER_FROM_SYNC_HORIZ__MASK 0x0000ffff -#define EDP_START_HOR_VER_FROM_SYNC_HORIZ__SHIFT 0 -static inline uint32_t EDP_START_HOR_VER_FROM_SYNC_HORIZ(uint32_t val) -{ - return ((val) << EDP_START_HOR_VER_FROM_SYNC_HORIZ__SHIFT) & EDP_START_HOR_VER_FROM_SYNC_HORIZ__MASK; -} -#define EDP_START_HOR_VER_FROM_SYNC_VERT__MASK 0xffff0000 -#define EDP_START_HOR_VER_FROM_SYNC_VERT__SHIFT 16 -static inline uint32_t EDP_START_HOR_VER_FROM_SYNC_VERT(uint32_t val) -{ - return ((val) << EDP_START_HOR_VER_FROM_SYNC_VERT__SHIFT) & EDP_START_HOR_VER_FROM_SYNC_VERT__MASK; -} - -#define REG_EDP_HSYNC_VSYNC_WIDTH_POLARITY 0x00000024 -#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__MASK 0x00007fff -#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__SHIFT 0 -static inline uint32_t EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ(uint32_t val) -{ - return ((val) << EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__SHIFT) & EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__MASK; -} -#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_NHSYNC 0x00008000 -#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__MASK 0x7fff0000 -#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__SHIFT 16 -static inline uint32_t EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT(uint32_t val) -{ - return ((val) << EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__SHIFT) & EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__MASK; -} -#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_NVSYNC 0x80000000 - -#define REG_EDP_ACTIVE_HOR_VER 0x00000028 -#define EDP_ACTIVE_HOR_VER_HORIZ__MASK 0x0000ffff -#define EDP_ACTIVE_HOR_VER_HORIZ__SHIFT 0 -static inline uint32_t EDP_ACTIVE_HOR_VER_HORIZ(uint32_t val) -{ - return ((val) << EDP_ACTIVE_HOR_VER_HORIZ__SHIFT) & EDP_ACTIVE_HOR_VER_HORIZ__MASK; -} -#define EDP_ACTIVE_HOR_VER_VERT__MASK 0xffff0000 -#define EDP_ACTIVE_HOR_VER_VERT__SHIFT 16 -static inline uint32_t EDP_ACTIVE_HOR_VER_VERT(uint32_t val) -{ - return ((val) << EDP_ACTIVE_HOR_VER_VERT__SHIFT) & EDP_ACTIVE_HOR_VER_VERT__MASK; -} - -#define REG_EDP_MISC1_MISC0 0x0000002c -#define EDP_MISC1_MISC0_MISC0__MASK 0x000000ff -#define EDP_MISC1_MISC0_MISC0__SHIFT 0 -static inline uint32_t EDP_MISC1_MISC0_MISC0(uint32_t val) -{ - return ((val) << EDP_MISC1_MISC0_MISC0__SHIFT) & EDP_MISC1_MISC0_MISC0__MASK; -} -#define EDP_MISC1_MISC0_SYNC 0x00000001 -#define EDP_MISC1_MISC0_COMPONENT_FORMAT__MASK 0x00000006 -#define EDP_MISC1_MISC0_COMPONENT_FORMAT__SHIFT 1 -static inline uint32_t EDP_MISC1_MISC0_COMPONENT_FORMAT(enum edp_component_format val) -{ - return ((val) << EDP_MISC1_MISC0_COMPONENT_FORMAT__SHIFT) & EDP_MISC1_MISC0_COMPONENT_FORMAT__MASK; -} -#define EDP_MISC1_MISC0_CEA 0x00000008 -#define EDP_MISC1_MISC0_BT709_5 0x00000010 -#define EDP_MISC1_MISC0_COLOR__MASK 0x000000e0 -#define EDP_MISC1_MISC0_COLOR__SHIFT 5 -static inline uint32_t EDP_MISC1_MISC0_COLOR(enum edp_color_depth val) -{ - return ((val) << EDP_MISC1_MISC0_COLOR__SHIFT) & EDP_MISC1_MISC0_COLOR__MASK; -} -#define EDP_MISC1_MISC0_MISC1__MASK 0x0000ff00 -#define EDP_MISC1_MISC0_MISC1__SHIFT 8 -static inline uint32_t EDP_MISC1_MISC0_MISC1(uint32_t val) -{ - return ((val) << EDP_MISC1_MISC0_MISC1__SHIFT) & EDP_MISC1_MISC0_MISC1__MASK; -} -#define EDP_MISC1_MISC0_INTERLACED_ODD 0x00000100 -#define EDP_MISC1_MISC0_STEREO__MASK 0x00000600 -#define EDP_MISC1_MISC0_STEREO__SHIFT 9 -static inline uint32_t EDP_MISC1_MISC0_STEREO(uint32_t val) -{ - return ((val) << EDP_MISC1_MISC0_STEREO__SHIFT) & EDP_MISC1_MISC0_STEREO__MASK; -} - -#define REG_EDP_PHY_CTRL 0x00000074 -#define EDP_PHY_CTRL_SW_RESET_PLL 0x00000001 -#define EDP_PHY_CTRL_SW_RESET 0x00000004 - -#define REG_EDP_MAINLINK_READY 0x00000084 -#define EDP_MAINLINK_READY_TRAIN_PATTERN_1_READY 0x00000008 -#define EDP_MAINLINK_READY_TRAIN_PATTERN_2_READY 0x00000010 -#define EDP_MAINLINK_READY_TRAIN_PATTERN_3_READY 0x00000020 - -#define REG_EDP_AUX_CTRL 0x00000300 -#define EDP_AUX_CTRL_ENABLE 0x00000001 -#define EDP_AUX_CTRL_RESET 0x00000002 - -#define REG_EDP_INTERRUPT_REG_1 0x00000308 -#define EDP_INTERRUPT_REG_1_HPD 0x00000001 -#define EDP_INTERRUPT_REG_1_HPD_ACK 0x00000002 -#define EDP_INTERRUPT_REG_1_HPD_EN 0x00000004 -#define EDP_INTERRUPT_REG_1_AUX_I2C_DONE 0x00000008 -#define EDP_INTERRUPT_REG_1_AUX_I2C_DONE_ACK 0x00000010 -#define EDP_INTERRUPT_REG_1_AUX_I2C_DONE_EN 0x00000020 -#define EDP_INTERRUPT_REG_1_WRONG_ADDR 0x00000040 -#define EDP_INTERRUPT_REG_1_WRONG_ADDR_ACK 0x00000080 -#define EDP_INTERRUPT_REG_1_WRONG_ADDR_EN 0x00000100 -#define EDP_INTERRUPT_REG_1_TIMEOUT 0x00000200 -#define EDP_INTERRUPT_REG_1_TIMEOUT_ACK 0x00000400 -#define EDP_INTERRUPT_REG_1_TIMEOUT_EN 0x00000800 -#define EDP_INTERRUPT_REG_1_NACK_DEFER 0x00001000 -#define EDP_INTERRUPT_REG_1_NACK_DEFER_ACK 0x00002000 -#define EDP_INTERRUPT_REG_1_NACK_DEFER_EN 0x00004000 -#define EDP_INTERRUPT_REG_1_WRONG_DATA_CNT 0x00008000 -#define EDP_INTERRUPT_REG_1_WRONG_DATA_CNT_ACK 0x00010000 -#define EDP_INTERRUPT_REG_1_WRONG_DATA_CNT_EN 0x00020000 -#define EDP_INTERRUPT_REG_1_I2C_NACK 0x00040000 -#define EDP_INTERRUPT_REG_1_I2C_NACK_ACK 0x00080000 -#define EDP_INTERRUPT_REG_1_I2C_NACK_EN 0x00100000 -#define EDP_INTERRUPT_REG_1_I2C_DEFER 0x00200000 -#define EDP_INTERRUPT_REG_1_I2C_DEFER_ACK 0x00400000 -#define EDP_INTERRUPT_REG_1_I2C_DEFER_EN 0x00800000 -#define EDP_INTERRUPT_REG_1_PLL_UNLOCK 0x01000000 -#define EDP_INTERRUPT_REG_1_PLL_UNLOCK_ACK 0x02000000 -#define EDP_INTERRUPT_REG_1_PLL_UNLOCK_EN 0x04000000 -#define EDP_INTERRUPT_REG_1_AUX_ERROR 0x08000000 -#define EDP_INTERRUPT_REG_1_AUX_ERROR_ACK 0x10000000 -#define EDP_INTERRUPT_REG_1_AUX_ERROR_EN 0x20000000 - -#define REG_EDP_INTERRUPT_REG_2 0x0000030c -#define EDP_INTERRUPT_REG_2_READY_FOR_VIDEO 0x00000001 -#define EDP_INTERRUPT_REG_2_READY_FOR_VIDEO_ACK 0x00000002 -#define EDP_INTERRUPT_REG_2_READY_FOR_VIDEO_EN 0x00000004 -#define EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT 0x00000008 -#define EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT_ACK 0x00000010 -#define EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT_EN 0x00000020 -#define EDP_INTERRUPT_REG_2_FRAME_END 0x00000200 -#define EDP_INTERRUPT_REG_2_FRAME_END_ACK 0x00000080 -#define EDP_INTERRUPT_REG_2_FRAME_END_EN 0x00000100 -#define EDP_INTERRUPT_REG_2_CRC_UPDATED 0x00000200 -#define EDP_INTERRUPT_REG_2_CRC_UPDATED_ACK 0x00000400 -#define EDP_INTERRUPT_REG_2_CRC_UPDATED_EN 0x00000800 - -#define REG_EDP_INTERRUPT_TRANS_NUM 0x00000310 - -#define REG_EDP_AUX_DATA 0x00000314 -#define EDP_AUX_DATA_READ 0x00000001 -#define EDP_AUX_DATA_DATA__MASK 0x0000ff00 -#define EDP_AUX_DATA_DATA__SHIFT 8 -static inline uint32_t EDP_AUX_DATA_DATA(uint32_t val) -{ - return ((val) << EDP_AUX_DATA_DATA__SHIFT) & EDP_AUX_DATA_DATA__MASK; -} -#define EDP_AUX_DATA_INDEX__MASK 0x00ff0000 -#define EDP_AUX_DATA_INDEX__SHIFT 16 -static inline uint32_t EDP_AUX_DATA_INDEX(uint32_t val) -{ - return ((val) << EDP_AUX_DATA_INDEX__SHIFT) & EDP_AUX_DATA_INDEX__MASK; -} -#define EDP_AUX_DATA_INDEX_WRITE 0x80000000 - -#define REG_EDP_AUX_TRANS_CTRL 0x00000318 -#define EDP_AUX_TRANS_CTRL_I2C 0x00000100 -#define EDP_AUX_TRANS_CTRL_GO 0x00000200 - -#define REG_EDP_AUX_STATUS 0x00000324 - -static inline uint32_t REG_EDP_PHY_LN(uint32_t i0) { return 0x00000400 + 0x40*i0; } - -static inline uint32_t REG_EDP_PHY_LN_PD_CTL(uint32_t i0) { return 0x00000404 + 0x40*i0; } - -#define REG_EDP_PHY_GLB_VM_CFG0 0x00000510 - -#define REG_EDP_PHY_GLB_VM_CFG1 0x00000514 - -#define REG_EDP_PHY_GLB_MISC9 0x00000518 - -#define REG_EDP_PHY_GLB_CFG 0x00000528 - -#define REG_EDP_PHY_GLB_PD_CTL 0x0000052c - -#define REG_EDP_PHY_GLB_PHY_STATUS 0x00000598 - -#define REG_EDP_28nm_PHY_PLL_REFCLK_CFG 0x00000000 - -#define REG_EDP_28nm_PHY_PLL_POSTDIV1_CFG 0x00000004 - -#define REG_EDP_28nm_PHY_PLL_CHGPUMP_CFG 0x00000008 - -#define REG_EDP_28nm_PHY_PLL_VCOLPF_CFG 0x0000000c - -#define REG_EDP_28nm_PHY_PLL_VREG_CFG 0x00000010 - -#define REG_EDP_28nm_PHY_PLL_PWRGEN_CFG 0x00000014 - -#define REG_EDP_28nm_PHY_PLL_DMUX_CFG 0x00000018 - -#define REG_EDP_28nm_PHY_PLL_AMUX_CFG 0x0000001c - -#define REG_EDP_28nm_PHY_PLL_GLB_CFG 0x00000020 -#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_PWRDN_B 0x00000001 -#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_LDO_PWRDN_B 0x00000002 -#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_PWRGEN_PWRDN_B 0x00000004 -#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_ENABLE 0x00000008 - -#define REG_EDP_28nm_PHY_PLL_POSTDIV2_CFG 0x00000024 - -#define REG_EDP_28nm_PHY_PLL_POSTDIV3_CFG 0x00000028 - -#define REG_EDP_28nm_PHY_PLL_LPFR_CFG 0x0000002c - -#define REG_EDP_28nm_PHY_PLL_LPFC1_CFG 0x00000030 - -#define REG_EDP_28nm_PHY_PLL_LPFC2_CFG 0x00000034 - -#define REG_EDP_28nm_PHY_PLL_SDM_CFG0 0x00000038 - -#define REG_EDP_28nm_PHY_PLL_SDM_CFG1 0x0000003c - -#define REG_EDP_28nm_PHY_PLL_SDM_CFG2 0x00000040 - -#define REG_EDP_28nm_PHY_PLL_SDM_CFG3 0x00000044 - -#define REG_EDP_28nm_PHY_PLL_SDM_CFG4 0x00000048 - -#define REG_EDP_28nm_PHY_PLL_SSC_CFG0 0x0000004c - -#define REG_EDP_28nm_PHY_PLL_SSC_CFG1 0x00000050 - -#define REG_EDP_28nm_PHY_PLL_SSC_CFG2 0x00000054 - -#define REG_EDP_28nm_PHY_PLL_SSC_CFG3 0x00000058 - -#define REG_EDP_28nm_PHY_PLL_LKDET_CFG0 0x0000005c - -#define REG_EDP_28nm_PHY_PLL_LKDET_CFG1 0x00000060 - -#define REG_EDP_28nm_PHY_PLL_LKDET_CFG2 0x00000064 - -#define REG_EDP_28nm_PHY_PLL_TEST_CFG 0x00000068 -#define EDP_28nm_PHY_PLL_TEST_CFG_PLL_SW_RESET 0x00000001 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG0 0x0000006c - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG1 0x00000070 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG2 0x00000074 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG3 0x00000078 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG4 0x0000007c - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG5 0x00000080 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG6 0x00000084 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG7 0x00000088 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG8 0x0000008c - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG9 0x00000090 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG10 0x00000094 - -#define REG_EDP_28nm_PHY_PLL_CAL_CFG11 0x00000098 - -#define REG_EDP_28nm_PHY_PLL_EFUSE_CFG 0x0000009c - -#define REG_EDP_28nm_PHY_PLL_DEBUG_BUS_SEL 0x000000a0 - - -#endif /* EDP_XML */ diff --git a/drivers/gpu/drm/msm/edp/edp_aux.c b/drivers/gpu/drm/msm/edp/edp_aux.c deleted file mode 100644 index df10a01..0000000 --- a/drivers/gpu/drm/msm/edp/edp_aux.c +++ /dev/null @@ -1,264 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#include "edp.h" -#include "edp.xml.h" - -#define AUX_CMD_FIFO_LEN 144 -#define AUX_CMD_NATIVE_MAX 16 -#define AUX_CMD_I2C_MAX 128 - -#define EDP_INTR_AUX_I2C_ERR \ - (EDP_INTERRUPT_REG_1_WRONG_ADDR | EDP_INTERRUPT_REG_1_TIMEOUT | \ - EDP_INTERRUPT_REG_1_NACK_DEFER | EDP_INTERRUPT_REG_1_WRONG_DATA_CNT | \ - EDP_INTERRUPT_REG_1_I2C_NACK | EDP_INTERRUPT_REG_1_I2C_DEFER) -#define EDP_INTR_TRANS_STATUS \ - (EDP_INTERRUPT_REG_1_AUX_I2C_DONE | EDP_INTR_AUX_I2C_ERR) - -struct edp_aux { - void __iomem *base; - bool msg_err; - - struct completion msg_comp; - - /* To prevent the message transaction routine from reentry. */ - struct mutex msg_mutex; - - struct drm_dp_aux drm_aux; -}; -#define to_edp_aux(x) container_of(x, struct edp_aux, drm_aux) - -static int edp_msg_fifo_tx(struct edp_aux *aux, struct drm_dp_aux_msg *msg) -{ - u32 data[4]; - u32 reg, len; - bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ); - bool read = msg->request & (DP_AUX_I2C_READ & DP_AUX_NATIVE_READ); - u8 *msgdata = msg->buffer; - int i; - - if (read) - len = 4; - else - len = msg->size + 4; - - /* - * cmd fifo only has depth of 144 bytes - */ - if (len > AUX_CMD_FIFO_LEN) - return -EINVAL; - - /* Pack cmd and write to HW */ - data[0] = (msg->address >> 16) & 0xf; /* addr[19:16] */ - if (read) - data[0] |= BIT(4); /* R/W */ - - data[1] = (msg->address >> 8) & 0xff; /* addr[15:8] */ - data[2] = msg->address & 0xff; /* addr[7:0] */ - data[3] = (msg->size - 1) & 0xff; /* len[7:0] */ - - for (i = 0; i < len; i++) { - reg = (i < 4) ? data[i] : msgdata[i - 4]; - reg = EDP_AUX_DATA_DATA(reg); /* index = 0, write */ - if (i == 0) - reg |= EDP_AUX_DATA_INDEX_WRITE; - edp_write(aux->base + REG_EDP_AUX_DATA, reg); - } - - reg = 0; /* Transaction number is always 1 */ - if (!native) /* i2c */ - reg |= EDP_AUX_TRANS_CTRL_I2C; - - reg |= EDP_AUX_TRANS_CTRL_GO; - edp_write(aux->base + REG_EDP_AUX_TRANS_CTRL, reg); - - return 0; -} - -static int edp_msg_fifo_rx(struct edp_aux *aux, struct drm_dp_aux_msg *msg) -{ - u32 data; - u8 *dp; - int i; - u32 len = msg->size; - - edp_write(aux->base + REG_EDP_AUX_DATA, - EDP_AUX_DATA_INDEX_WRITE | EDP_AUX_DATA_READ); /* index = 0 */ - - dp = msg->buffer; - - /* discard first byte */ - data = edp_read(aux->base + REG_EDP_AUX_DATA); - for (i = 0; i < len; i++) { - data = edp_read(aux->base + REG_EDP_AUX_DATA); - dp[i] = (u8)((data >> 8) & 0xff); - } - - return 0; -} - -/* - * This function does the real job to process an AUX transaction. - * It will call msm_edp_aux_ctrl() function to reset the AUX channel, - * if the waiting is timeout. - * The caller who triggers the transaction should avoid the - * msm_edp_aux_ctrl() running concurrently in other threads, i.e. - * start transaction only when AUX channel is fully enabled. - */ -static ssize_t edp_aux_transfer(struct drm_dp_aux *drm_aux, - struct drm_dp_aux_msg *msg) -{ - struct edp_aux *aux = to_edp_aux(drm_aux); - ssize_t ret; - unsigned long time_left; - bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ); - bool read = msg->request & (DP_AUX_I2C_READ & DP_AUX_NATIVE_READ); - - /* Ignore address only message */ - if ((msg->size == 0) || (msg->buffer == NULL)) { - msg->reply = native ? - DP_AUX_NATIVE_REPLY_ACK : DP_AUX_I2C_REPLY_ACK; - return msg->size; - } - - /* msg sanity check */ - if ((native && (msg->size > AUX_CMD_NATIVE_MAX)) || - (msg->size > AUX_CMD_I2C_MAX)) { - pr_err("%s: invalid msg: size(%zu), request(%x)\n", - __func__, msg->size, msg->request); - return -EINVAL; - } - - mutex_lock(&aux->msg_mutex); - - aux->msg_err = false; - reinit_completion(&aux->msg_comp); - - ret = edp_msg_fifo_tx(aux, msg); - if (ret < 0) - goto unlock_exit; - - DBG("wait_for_completion"); - time_left = wait_for_completion_timeout(&aux->msg_comp, - msecs_to_jiffies(300)); - if (!time_left) { - /* - * Clear GO and reset AUX channel - * to cancel the current transaction. - */ - edp_write(aux->base + REG_EDP_AUX_TRANS_CTRL, 0); - msm_edp_aux_ctrl(aux, 1); - pr_err("%s: aux timeout,\n", __func__); - ret = -ETIMEDOUT; - goto unlock_exit; - } - DBG("completion"); - - if (!aux->msg_err) { - if (read) { - ret = edp_msg_fifo_rx(aux, msg); - if (ret < 0) - goto unlock_exit; - } - - msg->reply = native ? - DP_AUX_NATIVE_REPLY_ACK : DP_AUX_I2C_REPLY_ACK; - } else { - /* Reply defer to retry */ - msg->reply = native ? - DP_AUX_NATIVE_REPLY_DEFER : DP_AUX_I2C_REPLY_DEFER; - /* - * The sleep time in caller is not long enough to make sure - * our H/W completes transactions. Add more defer time here. - */ - msleep(100); - } - - /* Return requested size for success or retry */ - ret = msg->size; - -unlock_exit: - mutex_unlock(&aux->msg_mutex); - return ret; -} - -void *msm_edp_aux_init(struct device *dev, void __iomem *regbase, - struct drm_dp_aux **drm_aux) -{ - struct edp_aux *aux = NULL; - int ret; - - DBG(""); - aux = devm_kzalloc(dev, sizeof(*aux), GFP_KERNEL); - if (!aux) - return NULL; - - aux->base = regbase; - mutex_init(&aux->msg_mutex); - init_completion(&aux->msg_comp); - - aux->drm_aux.name = "msm_edp_aux"; - aux->drm_aux.dev = dev; - aux->drm_aux.transfer = edp_aux_transfer; - ret = drm_dp_aux_register(&aux->drm_aux); - if (ret) { - pr_err("%s: failed to register drm aux: %d\n", __func__, ret); - mutex_destroy(&aux->msg_mutex); - } - - if (drm_aux && aux) - *drm_aux = &aux->drm_aux; - - return aux; -} - -void msm_edp_aux_destroy(struct device *dev, struct edp_aux *aux) -{ - if (aux) { - drm_dp_aux_unregister(&aux->drm_aux); - mutex_destroy(&aux->msg_mutex); - } -} - -irqreturn_t msm_edp_aux_irq(struct edp_aux *aux, u32 isr) -{ - if (isr & EDP_INTR_TRANS_STATUS) { - DBG("isr=%x", isr); - edp_write(aux->base + REG_EDP_AUX_TRANS_CTRL, 0); - - if (isr & EDP_INTR_AUX_I2C_ERR) - aux->msg_err = true; - else - aux->msg_err = false; - - complete(&aux->msg_comp); - } - - return IRQ_HANDLED; -} - -void msm_edp_aux_ctrl(struct edp_aux *aux, int enable) -{ - u32 data; - - DBG("enable=%d", enable); - data = edp_read(aux->base + REG_EDP_AUX_CTRL); - - if (enable) { - data |= EDP_AUX_CTRL_RESET; - edp_write(aux->base + REG_EDP_AUX_CTRL, data); - /* Make sure full reset */ - wmb(); - usleep_range(500, 1000); - - data &= ~EDP_AUX_CTRL_RESET; - data |= EDP_AUX_CTRL_ENABLE; - edp_write(aux->base + REG_EDP_AUX_CTRL, data); - } else { - data &= ~EDP_AUX_CTRL_ENABLE; - edp_write(aux->base + REG_EDP_AUX_CTRL, data); - } -} - diff --git a/drivers/gpu/drm/msm/edp/edp_bridge.c b/drivers/gpu/drm/msm/edp/edp_bridge.c deleted file mode 100644 index c69a37e..0000000 --- a/drivers/gpu/drm/msm/edp/edp_bridge.c +++ /dev/null @@ -1,111 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#include "edp.h" - -struct edp_bridge { - struct drm_bridge base; - struct msm_edp *edp; -}; -#define to_edp_bridge(x) container_of(x, struct edp_bridge, base) - -void edp_bridge_destroy(struct drm_bridge *bridge) -{ -} - -static void edp_bridge_pre_enable(struct drm_bridge *bridge) -{ - struct edp_bridge *edp_bridge = to_edp_bridge(bridge); - struct msm_edp *edp = edp_bridge->edp; - - DBG(""); - msm_edp_ctrl_power(edp->ctrl, true); -} - -static void edp_bridge_enable(struct drm_bridge *bridge) -{ - DBG(""); -} - -static void edp_bridge_disable(struct drm_bridge *bridge) -{ - DBG(""); -} - -static void edp_bridge_post_disable(struct drm_bridge *bridge) -{ - struct edp_bridge *edp_bridge = to_edp_bridge(bridge); - struct msm_edp *edp = edp_bridge->edp; - - DBG(""); - msm_edp_ctrl_power(edp->ctrl, false); -} - -static void edp_bridge_mode_set(struct drm_bridge *bridge, - const struct drm_display_mode *mode, - const struct drm_display_mode *adjusted_mode) -{ - struct drm_device *dev = bridge->dev; - struct drm_connector *connector; - struct edp_bridge *edp_bridge = to_edp_bridge(bridge); - struct msm_edp *edp = edp_bridge->edp; - - DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode)); - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - struct drm_encoder *encoder = connector->encoder; - struct drm_bridge *first_bridge; - - if (!connector->encoder) - continue; - - first_bridge = drm_bridge_chain_get_first_bridge(encoder); - if (bridge == first_bridge) { - msm_edp_ctrl_timing_cfg(edp->ctrl, - adjusted_mode, &connector->display_info); - break; - } - } -} - -static const struct drm_bridge_funcs edp_bridge_funcs = { - .pre_enable = edp_bridge_pre_enable, - .enable = edp_bridge_enable, - .disable = edp_bridge_disable, - .post_disable = edp_bridge_post_disable, - .mode_set = edp_bridge_mode_set, -}; - -/* initialize bridge */ -struct drm_bridge *msm_edp_bridge_init(struct msm_edp *edp) -{ - struct drm_bridge *bridge = NULL; - struct edp_bridge *edp_bridge; - int ret; - - edp_bridge = devm_kzalloc(edp->dev->dev, - sizeof(*edp_bridge), GFP_KERNEL); - if (!edp_bridge) { - ret = -ENOMEM; - goto fail; - } - - edp_bridge->edp = edp; - - bridge = &edp_bridge->base; - bridge->funcs = &edp_bridge_funcs; - - ret = drm_bridge_attach(edp->encoder, bridge, NULL, 0); - if (ret) - goto fail; - - return bridge; - -fail: - if (bridge) - edp_bridge_destroy(bridge); - - return ERR_PTR(ret); -} diff --git a/drivers/gpu/drm/msm/edp/edp_common.c b/drivers/gpu/drm/msm/edp/edp_common.c new file mode 100644 index 0000000..8330050 --- /dev/null +++ b/drivers/gpu/drm/msm/edp/edp_common.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved. + */ + +#include "edp_common.h" + +void __init msm_edp_register(void) +{ + msm_edp_v200_register(); +} + +void __exit msm_edp_unregister(void) +{ + msm_edp_v200_unregister(); +} + +/* Second part of initialization, the drm/kms level modeset_init */ +int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev, + struct drm_encoder *encoder) +{ + int ret = 0; + + if (WARN_ON(!encoder) || WARN_ON(!edp) || WARN_ON(!dev)) + return -EINVAL; + + edp->encoder = encoder; + edp->dev = dev; + + if (edp->version == MSM_EDP_VERSION_200) + ret = msm_edp_v200_modeset_init(edp, dev, encoder); + + return ret; +} diff --git a/drivers/gpu/drm/msm/edp/edp_common.h b/drivers/gpu/drm/msm/edp/edp_common.h new file mode 100644 index 0000000..30a74d9 --- /dev/null +++ b/drivers/gpu/drm/msm/edp/edp_common.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved. + */ + +#ifndef __EDP_COMMON_CONNECTOR_H__ +#define __EDP_COMMON_CONNECTOR_H__ + +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc.h> +#include <drm/drm_dp_helper.h> + +#include "msm_drv.h" +#include "msm_kms.h" +#include "dpu_io_util.h" + +#define MSM_EDP_VERSION_200 200 + +struct msm_edp { + struct drm_device *dev; + struct platform_device *pdev; + + struct drm_connector *connector; + struct drm_bridge *bridge; + + /* the encoder we are hooked to (outside of eDP block) */ + struct drm_encoder *encoder; + + int version; +}; + +void __init msm_edp_v200_register(void); +void __exit msm_edp_v200_unregister(void); +int msm_edp_v200_modeset_init(struct msm_edp *edp, struct drm_device *dev, + struct drm_encoder *encoder); + +#endif /* __EDP_COMMON_CONNECTOR_H__ */ diff --git a/drivers/gpu/drm/msm/edp/edp_connector.c b/drivers/gpu/drm/msm/edp/edp_connector.c deleted file mode 100644 index 73cb5fd..0000000 --- a/drivers/gpu/drm/msm/edp/edp_connector.c +++ /dev/null @@ -1,132 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#include "drm/drm_edid.h" -#include "msm_kms.h" -#include "edp.h" - -struct edp_connector { - struct drm_connector base; - struct msm_edp *edp; -}; -#define to_edp_connector(x) container_of(x, struct edp_connector, base) - -static enum drm_connector_status edp_connector_detect( - struct drm_connector *connector, bool force) -{ - struct edp_connector *edp_connector = to_edp_connector(connector); - struct msm_edp *edp = edp_connector->edp; - - DBG(""); - return msm_edp_ctrl_panel_connected(edp->ctrl) ? - connector_status_connected : connector_status_disconnected; -} - -static void edp_connector_destroy(struct drm_connector *connector) -{ - struct edp_connector *edp_connector = to_edp_connector(connector); - - DBG(""); - - drm_connector_cleanup(connector); - - kfree(edp_connector); -} - -static int edp_connector_get_modes(struct drm_connector *connector) -{ - struct edp_connector *edp_connector = to_edp_connector(connector); - struct msm_edp *edp = edp_connector->edp; - - struct edid *drm_edid = NULL; - int ret = 0; - - DBG(""); - ret = msm_edp_ctrl_get_panel_info(edp->ctrl, connector, &drm_edid); - if (ret) - return ret; - - drm_connector_update_edid_property(connector, drm_edid); - if (drm_edid) - ret = drm_add_edid_modes(connector, drm_edid); - - return ret; -} - -static int edp_connector_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - struct edp_connector *edp_connector = to_edp_connector(connector); - struct msm_edp *edp = edp_connector->edp; - struct msm_drm_private *priv = connector->dev->dev_private; - struct msm_kms *kms = priv->kms; - long actual, requested; - - requested = 1000 * mode->clock; - actual = kms->funcs->round_pixclk(kms, - requested, edp_connector->edp->encoder); - - DBG("requested=%ld, actual=%ld", requested, actual); - if (actual != requested) - return MODE_CLOCK_RANGE; - - if (!msm_edp_ctrl_pixel_clock_valid( - edp->ctrl, mode->clock, NULL, NULL)) - return MODE_CLOCK_RANGE; - - /* Invalidate all modes if color format is not supported */ - if (connector->display_info.bpc > 8) - return MODE_BAD; - - return MODE_OK; -} - -static const struct drm_connector_funcs edp_connector_funcs = { - .detect = edp_connector_detect, - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = edp_connector_destroy, - .reset = drm_atomic_helper_connector_reset, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; - -static const struct drm_connector_helper_funcs edp_connector_helper_funcs = { - .get_modes = edp_connector_get_modes, - .mode_valid = edp_connector_mode_valid, -}; - -/* initialize connector */ -struct drm_connector *msm_edp_connector_init(struct msm_edp *edp) -{ - struct drm_connector *connector = NULL; - struct edp_connector *edp_connector; - int ret; - - edp_connector = kzalloc(sizeof(*edp_connector), GFP_KERNEL); - if (!edp_connector) - return ERR_PTR(-ENOMEM); - - edp_connector->edp = edp; - - connector = &edp_connector->base; - - ret = drm_connector_init(edp->dev, connector, &edp_connector_funcs, - DRM_MODE_CONNECTOR_eDP); - if (ret) - return ERR_PTR(ret); - - drm_connector_helper_add(connector, &edp_connector_helper_funcs); - - /* We don't support HPD, so only poll status until connected. */ - connector->polled = DRM_CONNECTOR_POLL_CONNECT; - - /* Display driver doesn't support interlace now. */ - connector->interlace_allowed = false; - connector->doublescan_allowed = false; - - drm_connector_attach_encoder(connector, edp->encoder); - - return connector; -} diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c b/drivers/gpu/drm/msm/edp/edp_ctrl.c deleted file mode 100644 index 0d9657c..0000000 --- a/drivers/gpu/drm/msm/edp/edp_ctrl.c +++ /dev/null @@ -1,1375 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#include <linux/clk.h> -#include <linux/gpio/consumer.h> -#include <linux/regulator/consumer.h> -#include <drm/drm_crtc.h> -#include <drm/drm_dp_helper.h> -#include <drm/drm_edid.h> - -#include "edp.h" -#include "edp.xml.h" - -#define VDDA_UA_ON_LOAD 100000 /* uA units */ -#define VDDA_UA_OFF_LOAD 100 /* uA units */ - -#define DPCD_LINK_VOLTAGE_MAX 4 -#define DPCD_LINK_PRE_EMPHASIS_MAX 4 - -#define EDP_LINK_BW_MAX DP_LINK_BW_2_7 - -/* Link training return value */ -#define EDP_TRAIN_FAIL -1 -#define EDP_TRAIN_SUCCESS 0 -#define EDP_TRAIN_RECONFIG 1 - -#define EDP_CLK_MASK_AHB BIT(0) -#define EDP_CLK_MASK_AUX BIT(1) -#define EDP_CLK_MASK_LINK BIT(2) -#define EDP_CLK_MASK_PIXEL BIT(3) -#define EDP_CLK_MASK_MDP_CORE BIT(4) -#define EDP_CLK_MASK_LINK_CHAN (EDP_CLK_MASK_LINK | EDP_CLK_MASK_PIXEL) -#define EDP_CLK_MASK_AUX_CHAN \ - (EDP_CLK_MASK_AHB | EDP_CLK_MASK_AUX | EDP_CLK_MASK_MDP_CORE) -#define EDP_CLK_MASK_ALL (EDP_CLK_MASK_AUX_CHAN | EDP_CLK_MASK_LINK_CHAN) - -#define EDP_BACKLIGHT_MAX 255 - -#define EDP_INTR_STATUS1 \ - (EDP_INTERRUPT_REG_1_HPD | EDP_INTERRUPT_REG_1_AUX_I2C_DONE | \ - EDP_INTERRUPT_REG_1_WRONG_ADDR | EDP_INTERRUPT_REG_1_TIMEOUT | \ - EDP_INTERRUPT_REG_1_NACK_DEFER | EDP_INTERRUPT_REG_1_WRONG_DATA_CNT | \ - EDP_INTERRUPT_REG_1_I2C_NACK | EDP_INTERRUPT_REG_1_I2C_DEFER | \ - EDP_INTERRUPT_REG_1_PLL_UNLOCK | EDP_INTERRUPT_REG_1_AUX_ERROR) -#define EDP_INTR_MASK1 (EDP_INTR_STATUS1 << 2) -#define EDP_INTR_STATUS2 \ - (EDP_INTERRUPT_REG_2_READY_FOR_VIDEO | \ - EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT | \ - EDP_INTERRUPT_REG_2_FRAME_END | EDP_INTERRUPT_REG_2_CRC_UPDATED) -#define EDP_INTR_MASK2 (EDP_INTR_STATUS2 << 2) - -struct edp_ctrl { - struct platform_device *pdev; - - void __iomem *base; - - /* regulators */ - struct regulator *vdda_vreg; /* 1.8 V */ - struct regulator *lvl_vreg; - - /* clocks */ - struct clk *aux_clk; - struct clk *pixel_clk; - struct clk *ahb_clk; - struct clk *link_clk; - struct clk *mdp_core_clk; - - /* gpios */ - struct gpio_desc *panel_en_gpio; - struct gpio_desc *panel_hpd_gpio; - - /* completion and mutex */ - struct completion idle_comp; - struct mutex dev_mutex; /* To protect device power status */ - - /* work queue */ - struct work_struct on_work; - struct work_struct off_work; - struct workqueue_struct *workqueue; - - /* Interrupt register lock */ - spinlock_t irq_lock; - - bool edp_connected; - bool power_on; - - /* edid raw data */ - struct edid *edid; - - struct drm_dp_aux *drm_aux; - - /* dpcd raw data */ - u8 dpcd[DP_RECEIVER_CAP_SIZE]; - - /* Link status */ - u8 link_rate; - u8 lane_cnt; - u8 v_level; - u8 p_level; - - /* Timing status */ - u8 interlaced; - u32 pixel_rate; /* in kHz */ - u32 color_depth; - - struct edp_aux *aux; - struct edp_phy *phy; -}; - -struct edp_pixel_clk_div { - u32 rate; /* in kHz */ - u32 m; - u32 n; -}; - -#define EDP_PIXEL_CLK_NUM 8 -static const struct edp_pixel_clk_div clk_divs[2][EDP_PIXEL_CLK_NUM] = { - { /* Link clock = 162MHz, source clock = 810MHz */ - {119000, 31, 211}, /* WSXGA+ 1680x1050@60Hz CVT */ - {130250, 32, 199}, /* UXGA 1600x1200@60Hz CVT */ - {148500, 11, 60}, /* FHD 1920x1080@60Hz */ - {154000, 50, 263}, /* WUXGA 1920x1200@60Hz CVT */ - {209250, 31, 120}, /* QXGA 2048x1536@60Hz CVT */ - {268500, 119, 359}, /* WQXGA 2560x1600@60Hz CVT */ - {138530, 33, 193}, /* AUO B116HAN03.0 Panel */ - {141400, 48, 275}, /* AUO B133HTN01.2 Panel */ - }, - { /* Link clock = 270MHz, source clock = 675MHz */ - {119000, 52, 295}, /* WSXGA+ 1680x1050@60Hz CVT */ - {130250, 11, 57}, /* UXGA 1600x1200@60Hz CVT */ - {148500, 11, 50}, /* FHD 1920x1080@60Hz */ - {154000, 47, 206}, /* WUXGA 1920x1200@60Hz CVT */ - {209250, 31, 100}, /* QXGA 2048x1536@60Hz CVT */ - {268500, 107, 269}, /* WQXGA 2560x1600@60Hz CVT */ - {138530, 63, 307}, /* AUO B116HAN03.0 Panel */ - {141400, 53, 253}, /* AUO B133HTN01.2 Panel */ - }, -}; - -static int edp_clk_init(struct edp_ctrl *ctrl) -{ - struct platform_device *pdev = ctrl->pdev; - int ret; - - ctrl->aux_clk = msm_clk_get(pdev, "core"); - if (IS_ERR(ctrl->aux_clk)) { - ret = PTR_ERR(ctrl->aux_clk); - pr_err("%s: Can't find core clock, %d\n", __func__, ret); - ctrl->aux_clk = NULL; - return ret; - } - - ctrl->pixel_clk = msm_clk_get(pdev, "pixel"); - if (IS_ERR(ctrl->pixel_clk)) { - ret = PTR_ERR(ctrl->pixel_clk); - pr_err("%s: Can't find pixel clock, %d\n", __func__, ret); - ctrl->pixel_clk = NULL; - return ret; - } - - ctrl->ahb_clk = msm_clk_get(pdev, "iface"); - if (IS_ERR(ctrl->ahb_clk)) { - ret = PTR_ERR(ctrl->ahb_clk); - pr_err("%s: Can't find iface clock, %d\n", __func__, ret); - ctrl->ahb_clk = NULL; - return ret; - } - - ctrl->link_clk = msm_clk_get(pdev, "link"); - if (IS_ERR(ctrl->link_clk)) { - ret = PTR_ERR(ctrl->link_clk); - pr_err("%s: Can't find link clock, %d\n", __func__, ret); - ctrl->link_clk = NULL; - return ret; - } - - /* need mdp core clock to receive irq */ - ctrl->mdp_core_clk = msm_clk_get(pdev, "mdp_core"); - if (IS_ERR(ctrl->mdp_core_clk)) { - ret = PTR_ERR(ctrl->mdp_core_clk); - pr_err("%s: Can't find mdp_core clock, %d\n", __func__, ret); - ctrl->mdp_core_clk = NULL; - return ret; - } - - return 0; -} - -static int edp_clk_enable(struct edp_ctrl *ctrl, u32 clk_mask) -{ - int ret; - - DBG("mask=%x", clk_mask); - /* ahb_clk should be enabled first */ - if (clk_mask & EDP_CLK_MASK_AHB) { - ret = clk_prepare_enable(ctrl->ahb_clk); - if (ret) { - pr_err("%s: Failed to enable ahb clk\n", __func__); - goto f0; - } - } - if (clk_mask & EDP_CLK_MASK_AUX) { - ret = clk_set_rate(ctrl->aux_clk, 19200000); - if (ret) { - pr_err("%s: Failed to set rate aux clk\n", __func__); - goto f1; - } - ret = clk_prepare_enable(ctrl->aux_clk); - if (ret) { - pr_err("%s: Failed to enable aux clk\n", __func__); - goto f1; - } - } - /* Need to set rate and enable link_clk prior to pixel_clk */ - if (clk_mask & EDP_CLK_MASK_LINK) { - DBG("edp->link_clk, set_rate %ld", - (unsigned long)ctrl->link_rate * 27000000); - ret = clk_set_rate(ctrl->link_clk, - (unsigned long)ctrl->link_rate * 27000000); - if (ret) { - pr_err("%s: Failed to set rate to link clk\n", - __func__); - goto f2; - } - - ret = clk_prepare_enable(ctrl->link_clk); - if (ret) { - pr_err("%s: Failed to enable link clk\n", __func__); - goto f2; - } - } - if (clk_mask & EDP_CLK_MASK_PIXEL) { - DBG("edp->pixel_clk, set_rate %ld", - (unsigned long)ctrl->pixel_rate * 1000); - ret = clk_set_rate(ctrl->pixel_clk, - (unsigned long)ctrl->pixel_rate * 1000); - if (ret) { - pr_err("%s: Failed to set rate to pixel clk\n", - __func__); - goto f3; - } - - ret = clk_prepare_enable(ctrl->pixel_clk); - if (ret) { - pr_err("%s: Failed to enable pixel clk\n", __func__); - goto f3; - } - } - if (clk_mask & EDP_CLK_MASK_MDP_CORE) { - ret = clk_prepare_enable(ctrl->mdp_core_clk); - if (ret) { - pr_err("%s: Failed to enable mdp core clk\n", __func__); - goto f4; - } - } - - return 0; - -f4: - if (clk_mask & EDP_CLK_MASK_PIXEL) - clk_disable_unprepare(ctrl->pixel_clk); -f3: - if (clk_mask & EDP_CLK_MASK_LINK) - clk_disable_unprepare(ctrl->link_clk); -f2: - if (clk_mask & EDP_CLK_MASK_AUX) - clk_disable_unprepare(ctrl->aux_clk); -f1: - if (clk_mask & EDP_CLK_MASK_AHB) - clk_disable_unprepare(ctrl->ahb_clk); -f0: - return ret; -} - -static void edp_clk_disable(struct edp_ctrl *ctrl, u32 clk_mask) -{ - if (clk_mask & EDP_CLK_MASK_MDP_CORE) - clk_disable_unprepare(ctrl->mdp_core_clk); - if (clk_mask & EDP_CLK_MASK_PIXEL) - clk_disable_unprepare(ctrl->pixel_clk); - if (clk_mask & EDP_CLK_MASK_LINK) - clk_disable_unprepare(ctrl->link_clk); - if (clk_mask & EDP_CLK_MASK_AUX) - clk_disable_unprepare(ctrl->aux_clk); - if (clk_mask & EDP_CLK_MASK_AHB) - clk_disable_unprepare(ctrl->ahb_clk); -} - -static int edp_regulator_init(struct edp_ctrl *ctrl) -{ - struct device *dev = &ctrl->pdev->dev; - int ret; - - DBG(""); - ctrl->vdda_vreg = devm_regulator_get(dev, "vdda"); - ret = PTR_ERR_OR_ZERO(ctrl->vdda_vreg); - if (ret) { - pr_err("%s: Could not get vdda reg, ret = %d\n", __func__, - ret); - ctrl->vdda_vreg = NULL; - return ret; - } - ctrl->lvl_vreg = devm_regulator_get(dev, "lvl-vdd"); - ret = PTR_ERR_OR_ZERO(ctrl->lvl_vreg); - if (ret) { - pr_err("%s: Could not get lvl-vdd reg, ret = %d\n", __func__, - ret); - ctrl->lvl_vreg = NULL; - return ret; - } - - return 0; -} - -static int edp_regulator_enable(struct edp_ctrl *ctrl) -{ - int ret; - - ret = regulator_set_load(ctrl->vdda_vreg, VDDA_UA_ON_LOAD); - if (ret < 0) { - pr_err("%s: vdda_vreg set regulator mode failed.\n", __func__); - goto vdda_set_fail; - } - - ret = regulator_enable(ctrl->vdda_vreg); - if (ret) { - pr_err("%s: Failed to enable vdda_vreg regulator.\n", __func__); - goto vdda_enable_fail; - } - - ret = regulator_enable(ctrl->lvl_vreg); - if (ret) { - pr_err("Failed to enable lvl-vdd reg regulator, %d", ret); - goto lvl_enable_fail; - } - - DBG("exit"); - return 0; - -lvl_enable_fail: - regulator_disable(ctrl->vdda_vreg); -vdda_enable_fail: - regulator_set_load(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD); -vdda_set_fail: - return ret; -} - -static void edp_regulator_disable(struct edp_ctrl *ctrl) -{ - regulator_disable(ctrl->lvl_vreg); - regulator_disable(ctrl->vdda_vreg); - regulator_set_load(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD); -} - -static int edp_gpio_config(struct edp_ctrl *ctrl) -{ - struct device *dev = &ctrl->pdev->dev; - int ret; - - ctrl->panel_hpd_gpio = devm_gpiod_get(dev, "panel-hpd", GPIOD_IN); - if (IS_ERR(ctrl->panel_hpd_gpio)) { - ret = PTR_ERR(ctrl->panel_hpd_gpio); - ctrl->panel_hpd_gpio = NULL; - pr_err("%s: cannot get panel-hpd-gpios, %d\n", __func__, ret); - return ret; - } - - ctrl->panel_en_gpio = devm_gpiod_get(dev, "panel-en", GPIOD_OUT_LOW); - if (IS_ERR(ctrl->panel_en_gpio)) { - ret = PTR_ERR(ctrl->panel_en_gpio); - ctrl->panel_en_gpio = NULL; - pr_err("%s: cannot get panel-en-gpios, %d\n", __func__, ret); - return ret; - } - - DBG("gpio on"); - - return 0; -} - -static void edp_ctrl_irq_enable(struct edp_ctrl *ctrl, int enable) -{ - unsigned long flags; - - DBG("%d", enable); - spin_lock_irqsave(&ctrl->irq_lock, flags); - if (enable) { - edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_1, EDP_INTR_MASK1); - edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_2, EDP_INTR_MASK2); - } else { - edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_1, 0x0); - edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_2, 0x0); - } - spin_unlock_irqrestore(&ctrl->irq_lock, flags); - DBG("exit"); -} - -static void edp_fill_link_cfg(struct edp_ctrl *ctrl) -{ - u32 prate; - u32 lrate; - u32 bpp; - u8 max_lane = drm_dp_max_lane_count(ctrl->dpcd); - u8 lane; - - prate = ctrl->pixel_rate; - bpp = ctrl->color_depth * 3; - - /* - * By default, use the maximum link rate and minimum lane count, - * so that we can do rate down shift during link training. - */ - ctrl->link_rate = ctrl->dpcd[DP_MAX_LINK_RATE]; - - prate *= bpp; - prate /= 8; /* in kByte */ - - lrate = 270000; /* in kHz */ - lrate *= ctrl->link_rate; - lrate /= 10; /* in kByte, 10 bits --> 8 bits */ - - for (lane = 1; lane <= max_lane; lane <<= 1) { - if (lrate >= prate) - break; - lrate <<= 1; - } - - ctrl->lane_cnt = lane; - DBG("rate=%d lane=%d", ctrl->link_rate, ctrl->lane_cnt); -} - -static void edp_config_ctrl(struct edp_ctrl *ctrl) -{ - u32 data; - enum edp_color_depth depth; - - data = EDP_CONFIGURATION_CTRL_LANES(ctrl->lane_cnt - 1); - - if (drm_dp_enhanced_frame_cap(ctrl->dpcd)) - data |= EDP_CONFIGURATION_CTRL_ENHANCED_FRAMING; - - depth = EDP_6BIT; - if (ctrl->color_depth == 8) - depth = EDP_8BIT; - - data |= EDP_CONFIGURATION_CTRL_COLOR(depth); - - if (!ctrl->interlaced) /* progressive */ - data |= EDP_CONFIGURATION_CTRL_PROGRESSIVE; - - data |= (EDP_CONFIGURATION_CTRL_SYNC_CLK | - EDP_CONFIGURATION_CTRL_STATIC_MVID); - - edp_write(ctrl->base + REG_EDP_CONFIGURATION_CTRL, data); -} - -static void edp_state_ctrl(struct edp_ctrl *ctrl, u32 state) -{ - edp_write(ctrl->base + REG_EDP_STATE_CTRL, state); - /* Make sure H/W status is set */ - wmb(); -} - -static int edp_lane_set_write(struct edp_ctrl *ctrl, - u8 voltage_level, u8 pre_emphasis_level) -{ - int i; - u8 buf[4]; - - if (voltage_level >= DPCD_LINK_VOLTAGE_MAX) - voltage_level |= 0x04; - - if (pre_emphasis_level >= DPCD_LINK_PRE_EMPHASIS_MAX) - pre_emphasis_level |= 0x04; - - pre_emphasis_level <<= 3; - - for (i = 0; i < 4; i++) - buf[i] = voltage_level | pre_emphasis_level; - - DBG("%s: p|v=0x%x", __func__, voltage_level | pre_emphasis_level); - if (drm_dp_dpcd_write(ctrl->drm_aux, 0x103, buf, 4) < 4) { - pr_err("%s: Set sw/pe to panel failed\n", __func__); - return -ENOLINK; - } - - return 0; -} - -static int edp_train_pattern_set_write(struct edp_ctrl *ctrl, u8 pattern) -{ - u8 p = pattern; - - DBG("pattern=%x", p); - if (drm_dp_dpcd_write(ctrl->drm_aux, - DP_TRAINING_PATTERN_SET, &p, 1) < 1) { - pr_err("%s: Set training pattern to panel failed\n", __func__); - return -ENOLINK; - } - - return 0; -} - -static void edp_sink_train_set_adjust(struct edp_ctrl *ctrl, - const u8 *link_status) -{ - int i; - u8 max = 0; - u8 data; - - /* use the max level across lanes */ - for (i = 0; i < ctrl->lane_cnt; i++) { - data = drm_dp_get_adjust_request_voltage(link_status, i); - DBG("lane=%d req_voltage_swing=0x%x", i, data); - if (max < data) - max = data; - } - - ctrl->v_level = max >> DP_TRAIN_VOLTAGE_SWING_SHIFT; - - /* use the max level across lanes */ - max = 0; - for (i = 0; i < ctrl->lane_cnt; i++) { - data = drm_dp_get_adjust_request_pre_emphasis(link_status, i); - DBG("lane=%d req_pre_emphasis=0x%x", i, data); - if (max < data) - max = data; - } - - ctrl->p_level = max >> DP_TRAIN_PRE_EMPHASIS_SHIFT; - DBG("v_level=%d, p_level=%d", ctrl->v_level, ctrl->p_level); -} - -static void edp_host_train_set(struct edp_ctrl *ctrl, u32 train) -{ - int cnt = 10; - u32 data; - u32 shift = train - 1; - - DBG("train=%d", train); - - edp_state_ctrl(ctrl, EDP_STATE_CTRL_TRAIN_PATTERN_1 << shift); - while (--cnt) { - data = edp_read(ctrl->base + REG_EDP_MAINLINK_READY); - if (data & (EDP_MAINLINK_READY_TRAIN_PATTERN_1_READY << shift)) - break; - } - - if (cnt == 0) - pr_err("%s: set link_train=%d failed\n", __func__, train); -} - -static const u8 vm_pre_emphasis[4][4] = { - {0x03, 0x06, 0x09, 0x0C}, /* pe0, 0 db */ - {0x03, 0x06, 0x09, 0xFF}, /* pe1, 3.5 db */ - {0x03, 0x06, 0xFF, 0xFF}, /* pe2, 6.0 db */ - {0x03, 0xFF, 0xFF, 0xFF} /* pe3, 9.5 db */ -}; - -/* voltage swing, 0.2v and 1.0v are not support */ -static const u8 vm_voltage_swing[4][4] = { - {0x14, 0x18, 0x1A, 0x1E}, /* sw0, 0.4v */ - {0x18, 0x1A, 0x1E, 0xFF}, /* sw1, 0.6 v */ - {0x1A, 0x1E, 0xFF, 0xFF}, /* sw1, 0.8 v */ - {0x1E, 0xFF, 0xFF, 0xFF} /* sw1, 1.2 v, optional */ -}; - -static int edp_voltage_pre_emphasise_set(struct edp_ctrl *ctrl) -{ - u32 value0; - u32 value1; - - DBG("v=%d p=%d", ctrl->v_level, ctrl->p_level); - - value0 = vm_pre_emphasis[(int)(ctrl->v_level)][(int)(ctrl->p_level)]; - value1 = vm_voltage_swing[(int)(ctrl->v_level)][(int)(ctrl->p_level)]; - - /* Configure host and panel only if both values are allowed */ - if (value0 != 0xFF && value1 != 0xFF) { - msm_edp_phy_vm_pe_cfg(ctrl->phy, value0, value1); - return edp_lane_set_write(ctrl, ctrl->v_level, ctrl->p_level); - } - - return -EINVAL; -} - -static int edp_start_link_train_1(struct edp_ctrl *ctrl) -{ - u8 link_status[DP_LINK_STATUS_SIZE]; - u8 old_v_level; - int tries; - int ret; - int rlen; - - DBG(""); - - edp_host_train_set(ctrl, DP_TRAINING_PATTERN_1); - ret = edp_voltage_pre_emphasise_set(ctrl); - if (ret) - return ret; - ret = edp_train_pattern_set_write(ctrl, - DP_TRAINING_PATTERN_1 | DP_RECOVERED_CLOCK_OUT_EN); - if (ret) - return ret; - - tries = 0; - old_v_level = ctrl->v_level; - while (1) { - drm_dp_link_train_clock_recovery_delay(ctrl->dpcd); - - rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status); - if (rlen < DP_LINK_STATUS_SIZE) { - pr_err("%s: read link status failed\n", __func__); - return -ENOLINK; - } - if (drm_dp_clock_recovery_ok(link_status, ctrl->lane_cnt)) { - ret = 0; - break; - } - - if (ctrl->v_level == DPCD_LINK_VOLTAGE_MAX) { - ret = -1; - break; - } - - if (old_v_level == ctrl->v_level) { - tries++; - if (tries >= 5) { - ret = -1; - break; - } - } else { - tries = 0; - old_v_level = ctrl->v_level; - } - - edp_sink_train_set_adjust(ctrl, link_status); - ret = edp_voltage_pre_emphasise_set(ctrl); - if (ret) - return ret; - } - - return ret; -} - -static int edp_start_link_train_2(struct edp_ctrl *ctrl) -{ - u8 link_status[DP_LINK_STATUS_SIZE]; - int tries = 0; - int ret; - int rlen; - - DBG(""); - - edp_host_train_set(ctrl, DP_TRAINING_PATTERN_2); - ret = edp_voltage_pre_emphasise_set(ctrl); - if (ret) - return ret; - - ret = edp_train_pattern_set_write(ctrl, - DP_TRAINING_PATTERN_2 | DP_RECOVERED_CLOCK_OUT_EN); - if (ret) - return ret; - - while (1) { - drm_dp_link_train_channel_eq_delay(ctrl->dpcd); - - rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status); - if (rlen < DP_LINK_STATUS_SIZE) { - pr_err("%s: read link status failed\n", __func__); - return -ENOLINK; - } - if (drm_dp_channel_eq_ok(link_status, ctrl->lane_cnt)) { - ret = 0; - break; - } - - tries++; - if (tries > 10) { - ret = -1; - break; - } - - edp_sink_train_set_adjust(ctrl, link_status); - ret = edp_voltage_pre_emphasise_set(ctrl); - if (ret) - return ret; - } - - return ret; -} - -static int edp_link_rate_down_shift(struct edp_ctrl *ctrl) -{ - u32 prate, lrate, bpp; - u8 rate, lane, max_lane; - int changed = 0; - - rate = ctrl->link_rate; - lane = ctrl->lane_cnt; - max_lane = drm_dp_max_lane_count(ctrl->dpcd); - - bpp = ctrl->color_depth * 3; - prate = ctrl->pixel_rate; - prate *= bpp; - prate /= 8; /* in kByte */ - - if (rate > DP_LINK_BW_1_62 && rate <= EDP_LINK_BW_MAX) { - rate -= 4; /* reduce rate */ - changed++; - } - - if (changed) { - if (lane >= 1 && lane < max_lane) - lane <<= 1; /* increase lane */ - - lrate = 270000; /* in kHz */ - lrate *= rate; - lrate /= 10; /* kByte, 10 bits --> 8 bits */ - lrate *= lane; - - DBG("new lrate=%u prate=%u(kHz) rate=%d lane=%d p=%u b=%d", - lrate, prate, rate, lane, - ctrl->pixel_rate, - bpp); - - if (lrate > prate) { - ctrl->link_rate = rate; - ctrl->lane_cnt = lane; - DBG("new rate=%d %d", rate, lane); - return 0; - } - } - - return -EINVAL; -} - -static int edp_clear_training_pattern(struct edp_ctrl *ctrl) -{ - int ret; - - ret = edp_train_pattern_set_write(ctrl, 0); - - drm_dp_link_train_channel_eq_delay(ctrl->dpcd); - - return ret; -} - -static int edp_do_link_train(struct edp_ctrl *ctrl) -{ - u8 values[2]; - int ret; - - DBG(""); - /* - * Set the current link rate and lane cnt to panel. They may have been - * adjusted and the values are different from them in DPCD CAP - */ - values[0] = ctrl->lane_cnt; - values[1] = ctrl->link_rate; - - if (drm_dp_enhanced_frame_cap(ctrl->dpcd)) - values[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; - - if (drm_dp_dpcd_write(ctrl->drm_aux, DP_LINK_BW_SET, values, - sizeof(values)) < 0) - return EDP_TRAIN_FAIL; - - ctrl->v_level = 0; /* start from default level */ - ctrl->p_level = 0; - - edp_state_ctrl(ctrl, 0); - if (edp_clear_training_pattern(ctrl)) - return EDP_TRAIN_FAIL; - - ret = edp_start_link_train_1(ctrl); - if (ret < 0) { - if (edp_link_rate_down_shift(ctrl) == 0) { - DBG("link reconfig"); - ret = EDP_TRAIN_RECONFIG; - goto clear; - } else { - pr_err("%s: Training 1 failed", __func__); - ret = EDP_TRAIN_FAIL; - goto clear; - } - } - DBG("Training 1 completed successfully"); - - edp_state_ctrl(ctrl, 0); - if (edp_clear_training_pattern(ctrl)) - return EDP_TRAIN_FAIL; - - ret = edp_start_link_train_2(ctrl); - if (ret < 0) { - if (edp_link_rate_down_shift(ctrl) == 0) { - DBG("link reconfig"); - ret = EDP_TRAIN_RECONFIG; - goto clear; - } else { - pr_err("%s: Training 2 failed", __func__); - ret = EDP_TRAIN_FAIL; - goto clear; - } - } - DBG("Training 2 completed successfully"); - - edp_state_ctrl(ctrl, EDP_STATE_CTRL_SEND_VIDEO); -clear: - edp_clear_training_pattern(ctrl); - - return ret; -} - -static void edp_clock_synchrous(struct edp_ctrl *ctrl, int sync) -{ - u32 data; - enum edp_color_depth depth; - - data = edp_read(ctrl->base + REG_EDP_MISC1_MISC0); - - if (sync) - data |= EDP_MISC1_MISC0_SYNC; - else - data &= ~EDP_MISC1_MISC0_SYNC; - - /* only legacy rgb mode supported */ - depth = EDP_6BIT; /* Default */ - if (ctrl->color_depth == 8) - depth = EDP_8BIT; - else if (ctrl->color_depth == 10) - depth = EDP_10BIT; - else if (ctrl->color_depth == 12) - depth = EDP_12BIT; - else if (ctrl->color_depth == 16) - depth = EDP_16BIT; - - data |= EDP_MISC1_MISC0_COLOR(depth); - - edp_write(ctrl->base + REG_EDP_MISC1_MISC0, data); -} - -static int edp_sw_mvid_nvid(struct edp_ctrl *ctrl, u32 m, u32 n) -{ - u32 n_multi, m_multi = 5; - - if (ctrl->link_rate == DP_LINK_BW_1_62) { - n_multi = 1; - } else if (ctrl->link_rate == DP_LINK_BW_2_7) { - n_multi = 2; - } else { - pr_err("%s: Invalid link rate, %d\n", __func__, - ctrl->link_rate); - return -EINVAL; - } - - edp_write(ctrl->base + REG_EDP_SOFTWARE_MVID, m * m_multi); - edp_write(ctrl->base + REG_EDP_SOFTWARE_NVID, n * n_multi); - - return 0; -} - -static void edp_mainlink_ctrl(struct edp_ctrl *ctrl, int enable) -{ - u32 data = 0; - - edp_write(ctrl->base + REG_EDP_MAINLINK_CTRL, EDP_MAINLINK_CTRL_RESET); - /* Make sure fully reset */ - wmb(); - usleep_range(500, 1000); - - if (enable) - data |= EDP_MAINLINK_CTRL_ENABLE; - - edp_write(ctrl->base + REG_EDP_MAINLINK_CTRL, data); -} - -static void edp_ctrl_phy_aux_enable(struct edp_ctrl *ctrl, int enable) -{ - if (enable) { - edp_regulator_enable(ctrl); - edp_clk_enable(ctrl, EDP_CLK_MASK_AUX_CHAN); - msm_edp_phy_ctrl(ctrl->phy, 1); - msm_edp_aux_ctrl(ctrl->aux, 1); - gpiod_set_value(ctrl->panel_en_gpio, 1); - } else { - gpiod_set_value(ctrl->panel_en_gpio, 0); - msm_edp_aux_ctrl(ctrl->aux, 0); - msm_edp_phy_ctrl(ctrl->phy, 0); - edp_clk_disable(ctrl, EDP_CLK_MASK_AUX_CHAN); - edp_regulator_disable(ctrl); - } -} - -static void edp_ctrl_link_enable(struct edp_ctrl *ctrl, int enable) -{ - u32 m, n; - - if (enable) { - /* Enable link channel clocks */ - edp_clk_enable(ctrl, EDP_CLK_MASK_LINK_CHAN); - - msm_edp_phy_lane_power_ctrl(ctrl->phy, true, ctrl->lane_cnt); - - msm_edp_phy_vm_pe_init(ctrl->phy); - - /* Make sure phy is programed */ - wmb(); - msm_edp_phy_ready(ctrl->phy); - - edp_config_ctrl(ctrl); - msm_edp_ctrl_pixel_clock_valid(ctrl, ctrl->pixel_rate, &m, &n); - edp_sw_mvid_nvid(ctrl, m, n); - edp_mainlink_ctrl(ctrl, 1); - } else { - edp_mainlink_ctrl(ctrl, 0); - - msm_edp_phy_lane_power_ctrl(ctrl->phy, false, 0); - edp_clk_disable(ctrl, EDP_CLK_MASK_LINK_CHAN); - } -} - -static int edp_ctrl_training(struct edp_ctrl *ctrl) -{ - int ret; - - /* Do link training only when power is on */ - if (!ctrl->power_on) - return -EINVAL; - -train_start: - ret = edp_do_link_train(ctrl); - if (ret == EDP_TRAIN_RECONFIG) { - /* Re-configure main link */ - edp_ctrl_irq_enable(ctrl, 0); - edp_ctrl_link_enable(ctrl, 0); - msm_edp_phy_ctrl(ctrl->phy, 0); - - /* Make sure link is fully disabled */ - wmb(); - usleep_range(500, 1000); - - msm_edp_phy_ctrl(ctrl->phy, 1); - edp_ctrl_link_enable(ctrl, 1); - edp_ctrl_irq_enable(ctrl, 1); - goto train_start; - } - - return ret; -} - -static void edp_ctrl_on_worker(struct work_struct *work) -{ - struct edp_ctrl *ctrl = container_of( - work, struct edp_ctrl, on_work); - u8 value; - int ret; - - mutex_lock(&ctrl->dev_mutex); - - if (ctrl->power_on) { - DBG("already on"); - goto unlock_ret; - } - - edp_ctrl_phy_aux_enable(ctrl, 1); - edp_ctrl_link_enable(ctrl, 1); - - edp_ctrl_irq_enable(ctrl, 1); - - /* DP_SET_POWER register is only available on DPCD v1.1 and later */ - if (ctrl->dpcd[DP_DPCD_REV] >= 0x11) { - ret = drm_dp_dpcd_readb(ctrl->drm_aux, DP_SET_POWER, &value); - if (ret < 0) - goto fail; - - value &= ~DP_SET_POWER_MASK; - value |= DP_SET_POWER_D0; - - ret = drm_dp_dpcd_writeb(ctrl->drm_aux, DP_SET_POWER, value); - if (ret < 0) - goto fail; - - /* - * According to the DP 1.1 specification, a "Sink Device must - * exit the power saving state within 1 ms" (Section 2.5.3.1, - * Table 5-52, "Sink Control Field" (register 0x600). - */ - usleep_range(1000, 2000); - } - - ctrl->power_on = true; - - /* Start link training */ - ret = edp_ctrl_training(ctrl); - if (ret != EDP_TRAIN_SUCCESS) - goto fail; - - DBG("DONE"); - goto unlock_ret; - -fail: - edp_ctrl_irq_enable(ctrl, 0); - edp_ctrl_link_enable(ctrl, 0); - edp_ctrl_phy_aux_enable(ctrl, 0); - ctrl->power_on = false; -unlock_ret: - mutex_unlock(&ctrl->dev_mutex); -} - -static void edp_ctrl_off_worker(struct work_struct *work) -{ - struct edp_ctrl *ctrl = container_of( - work, struct edp_ctrl, off_work); - unsigned long time_left; - - mutex_lock(&ctrl->dev_mutex); - - if (!ctrl->power_on) { - DBG("already off"); - goto unlock_ret; - } - - reinit_completion(&ctrl->idle_comp); - edp_state_ctrl(ctrl, EDP_STATE_CTRL_PUSH_IDLE); - - time_left = wait_for_completion_timeout(&ctrl->idle_comp, - msecs_to_jiffies(500)); - if (!time_left) - DBG("%s: idle pattern timedout\n", __func__); - - edp_state_ctrl(ctrl, 0); - - /* DP_SET_POWER register is only available on DPCD v1.1 and later */ - if (ctrl->dpcd[DP_DPCD_REV] >= 0x11) { - u8 value; - int ret; - - ret = drm_dp_dpcd_readb(ctrl->drm_aux, DP_SET_POWER, &value); - if (ret > 0) { - value &= ~DP_SET_POWER_MASK; - value |= DP_SET_POWER_D3; - - drm_dp_dpcd_writeb(ctrl->drm_aux, DP_SET_POWER, value); - } - } - - edp_ctrl_irq_enable(ctrl, 0); - - edp_ctrl_link_enable(ctrl, 0); - - edp_ctrl_phy_aux_enable(ctrl, 0); - - ctrl->power_on = false; - -unlock_ret: - mutex_unlock(&ctrl->dev_mutex); -} - -irqreturn_t msm_edp_ctrl_irq(struct edp_ctrl *ctrl) -{ - u32 isr1, isr2, mask1, mask2; - u32 ack; - - DBG(""); - spin_lock(&ctrl->irq_lock); - isr1 = edp_read(ctrl->base + REG_EDP_INTERRUPT_REG_1); - isr2 = edp_read(ctrl->base + REG_EDP_INTERRUPT_REG_2); - - mask1 = isr1 & EDP_INTR_MASK1; - mask2 = isr2 & EDP_INTR_MASK2; - - isr1 &= ~mask1; /* remove masks bit */ - isr2 &= ~mask2; - - DBG("isr=%x mask=%x isr2=%x mask2=%x", - isr1, mask1, isr2, mask2); - - ack = isr1 & EDP_INTR_STATUS1; - ack <<= 1; /* ack bits */ - ack |= mask1; - edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_1, ack); - - ack = isr2 & EDP_INTR_STATUS2; - ack <<= 1; /* ack bits */ - ack |= mask2; - edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_2, ack); - spin_unlock(&ctrl->irq_lock); - - if (isr1 & EDP_INTERRUPT_REG_1_HPD) - DBG("edp_hpd"); - - if (isr2 & EDP_INTERRUPT_REG_2_READY_FOR_VIDEO) - DBG("edp_video_ready"); - - if (isr2 & EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT) { - DBG("idle_patterns_sent"); - complete(&ctrl->idle_comp); - } - - msm_edp_aux_irq(ctrl->aux, isr1); - - return IRQ_HANDLED; -} - -void msm_edp_ctrl_power(struct edp_ctrl *ctrl, bool on) -{ - if (on) - queue_work(ctrl->workqueue, &ctrl->on_work); - else - queue_work(ctrl->workqueue, &ctrl->off_work); -} - -int msm_edp_ctrl_init(struct msm_edp *edp) -{ - struct edp_ctrl *ctrl = NULL; - struct device *dev = &edp->pdev->dev; - int ret; - - if (!edp) { - pr_err("%s: edp is NULL!\n", __func__); - return -EINVAL; - } - - ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); - if (!ctrl) - return -ENOMEM; - - edp->ctrl = ctrl; - ctrl->pdev = edp->pdev; - - ctrl->base = msm_ioremap(ctrl->pdev, "edp", "eDP"); - if (IS_ERR(ctrl->base)) - return PTR_ERR(ctrl->base); - - /* Get regulator, clock, gpio, pwm */ - ret = edp_regulator_init(ctrl); - if (ret) { - pr_err("%s:regulator init fail\n", __func__); - return ret; - } - ret = edp_clk_init(ctrl); - if (ret) { - pr_err("%s:clk init fail\n", __func__); - return ret; - } - ret = edp_gpio_config(ctrl); - if (ret) { - pr_err("%s:failed to configure GPIOs: %d", __func__, ret); - return ret; - } - - /* Init aux and phy */ - ctrl->aux = msm_edp_aux_init(dev, ctrl->base, &ctrl->drm_aux); - if (!ctrl->aux || !ctrl->drm_aux) { - pr_err("%s:failed to init aux\n", __func__); - return -ENOMEM; - } - - ctrl->phy = msm_edp_phy_init(dev, ctrl->base); - if (!ctrl->phy) { - pr_err("%s:failed to init phy\n", __func__); - ret = -ENOMEM; - goto err_destory_aux; - } - - spin_lock_init(&ctrl->irq_lock); - mutex_init(&ctrl->dev_mutex); - init_completion(&ctrl->idle_comp); - - /* setup workqueue */ - ctrl->workqueue = alloc_ordered_workqueue("edp_drm_work", 0); - INIT_WORK(&ctrl->on_work, edp_ctrl_on_worker); - INIT_WORK(&ctrl->off_work, edp_ctrl_off_worker); - - return 0; - -err_destory_aux: - msm_edp_aux_destroy(dev, ctrl->aux); - ctrl->aux = NULL; - return ret; -} - -void msm_edp_ctrl_destroy(struct edp_ctrl *ctrl) -{ - if (!ctrl) - return; - - if (ctrl->workqueue) { - flush_workqueue(ctrl->workqueue); - destroy_workqueue(ctrl->workqueue); - ctrl->workqueue = NULL; - } - - if (ctrl->aux) { - msm_edp_aux_destroy(&ctrl->pdev->dev, ctrl->aux); - ctrl->aux = NULL; - } - - kfree(ctrl->edid); - ctrl->edid = NULL; - - mutex_destroy(&ctrl->dev_mutex); -} - -bool msm_edp_ctrl_panel_connected(struct edp_ctrl *ctrl) -{ - mutex_lock(&ctrl->dev_mutex); - DBG("connect status = %d", ctrl->edp_connected); - if (ctrl->edp_connected) { - mutex_unlock(&ctrl->dev_mutex); - return true; - } - - if (!ctrl->power_on) { - edp_ctrl_phy_aux_enable(ctrl, 1); - edp_ctrl_irq_enable(ctrl, 1); - } - - if (drm_dp_dpcd_read(ctrl->drm_aux, DP_DPCD_REV, ctrl->dpcd, - DP_RECEIVER_CAP_SIZE) < DP_RECEIVER_CAP_SIZE) { - pr_err("%s: AUX channel is NOT ready\n", __func__); - memset(ctrl->dpcd, 0, DP_RECEIVER_CAP_SIZE); - } else { - ctrl->edp_connected = true; - } - - if (!ctrl->power_on) { - edp_ctrl_irq_enable(ctrl, 0); - edp_ctrl_phy_aux_enable(ctrl, 0); - } - - DBG("exit: connect status=%d", ctrl->edp_connected); - - mutex_unlock(&ctrl->dev_mutex); - - return ctrl->edp_connected; -} - -int msm_edp_ctrl_get_panel_info(struct edp_ctrl *ctrl, - struct drm_connector *connector, struct edid **edid) -{ - int ret = 0; - - mutex_lock(&ctrl->dev_mutex); - - if (ctrl->edid) { - if (edid) { - DBG("Just return edid buffer"); - *edid = ctrl->edid; - } - goto unlock_ret; - } - - if (!ctrl->power_on) { - edp_ctrl_phy_aux_enable(ctrl, 1); - edp_ctrl_irq_enable(ctrl, 1); - } - - /* Initialize link rate as panel max link rate */ - ctrl->link_rate = ctrl->dpcd[DP_MAX_LINK_RATE]; - - ctrl->edid = drm_get_edid(connector, &ctrl->drm_aux->ddc); - if (!ctrl->edid) { - pr_err("%s: edid read fail\n", __func__); - goto disable_ret; - } - - if (edid) - *edid = ctrl->edid; - -disable_ret: - if (!ctrl->power_on) { - edp_ctrl_irq_enable(ctrl, 0); - edp_ctrl_phy_aux_enable(ctrl, 0); - } -unlock_ret: - mutex_unlock(&ctrl->dev_mutex); - return ret; -} - -int msm_edp_ctrl_timing_cfg(struct edp_ctrl *ctrl, - const struct drm_display_mode *mode, - const struct drm_display_info *info) -{ - u32 hstart_from_sync, vstart_from_sync; - u32 data; - int ret = 0; - - mutex_lock(&ctrl->dev_mutex); - /* - * Need to keep color depth, pixel rate and - * interlaced information in ctrl context - */ - ctrl->color_depth = info->bpc; - ctrl->pixel_rate = mode->clock; - ctrl->interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); - - /* Fill initial link config based on passed in timing */ - edp_fill_link_cfg(ctrl); - - if (edp_clk_enable(ctrl, EDP_CLK_MASK_AHB)) { - pr_err("%s, fail to prepare enable ahb clk\n", __func__); - ret = -EINVAL; - goto unlock_ret; - } - edp_clock_synchrous(ctrl, 1); - - /* Configure eDP timing to HW */ - edp_write(ctrl->base + REG_EDP_TOTAL_HOR_VER, - EDP_TOTAL_HOR_VER_HORIZ(mode->htotal) | - EDP_TOTAL_HOR_VER_VERT(mode->vtotal)); - - vstart_from_sync = mode->vtotal - mode->vsync_start; - hstart_from_sync = mode->htotal - mode->hsync_start; - edp_write(ctrl->base + REG_EDP_START_HOR_VER_FROM_SYNC, - EDP_START_HOR_VER_FROM_SYNC_HORIZ(hstart_from_sync) | - EDP_START_HOR_VER_FROM_SYNC_VERT(vstart_from_sync)); - - data = EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT( - mode->vsync_end - mode->vsync_start); - data |= EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ( - mode->hsync_end - mode->hsync_start); - if (mode->flags & DRM_MODE_FLAG_NVSYNC) - data |= EDP_HSYNC_VSYNC_WIDTH_POLARITY_NVSYNC; - if (mode->flags & DRM_MODE_FLAG_NHSYNC) - data |= EDP_HSYNC_VSYNC_WIDTH_POLARITY_NHSYNC; - edp_write(ctrl->base + REG_EDP_HSYNC_VSYNC_WIDTH_POLARITY, data); - - edp_write(ctrl->base + REG_EDP_ACTIVE_HOR_VER, - EDP_ACTIVE_HOR_VER_HORIZ(mode->hdisplay) | - EDP_ACTIVE_HOR_VER_VERT(mode->vdisplay)); - - edp_clk_disable(ctrl, EDP_CLK_MASK_AHB); - -unlock_ret: - mutex_unlock(&ctrl->dev_mutex); - return ret; -} - -bool msm_edp_ctrl_pixel_clock_valid(struct edp_ctrl *ctrl, - u32 pixel_rate, u32 *pm, u32 *pn) -{ - const struct edp_pixel_clk_div *divs; - u32 err = 1; /* 1% error tolerance */ - u32 clk_err; - int i; - - if (ctrl->link_rate == DP_LINK_BW_1_62) { - divs = clk_divs[0]; - } else if (ctrl->link_rate == DP_LINK_BW_2_7) { - divs = clk_divs[1]; - } else { - pr_err("%s: Invalid link rate,%d\n", __func__, ctrl->link_rate); - return false; - } - - for (i = 0; i < EDP_PIXEL_CLK_NUM; i++) { - clk_err = abs(divs[i].rate - pixel_rate); - if ((divs[i].rate * err / 100) >= clk_err) { - if (pm) - *pm = divs[i].m; - if (pn) - *pn = divs[i].n; - return true; - } - } - - DBG("pixel clock %d(kHz) not supported", pixel_rate); - - return false; -} - diff --git a/drivers/gpu/drm/msm/edp/edp_phy.c b/drivers/gpu/drm/msm/edp/edp_phy.c deleted file mode 100644 index fcaf7b7..0000000 --- a/drivers/gpu/drm/msm/edp/edp_phy.c +++ /dev/null @@ -1,98 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. - */ - -#include "edp.h" -#include "edp.xml.h" - -#define EDP_MAX_LANE 4 - -struct edp_phy { - void __iomem *base; -}; - -bool msm_edp_phy_ready(struct edp_phy *phy) -{ - u32 status; - int cnt = 100; - - while (--cnt) { - status = edp_read(phy->base + - REG_EDP_PHY_GLB_PHY_STATUS); - if (status & 0x01) - break; - usleep_range(500, 1000); - } - - if (cnt == 0) { - pr_err("%s: PHY NOT ready\n", __func__); - return false; - } else { - return true; - } -} - -void msm_edp_phy_ctrl(struct edp_phy *phy, int enable) -{ - DBG("enable=%d", enable); - if (enable) { - /* Reset */ - edp_write(phy->base + REG_EDP_PHY_CTRL, - EDP_PHY_CTRL_SW_RESET | EDP_PHY_CTRL_SW_RESET_PLL); - /* Make sure fully reset */ - wmb(); - usleep_range(500, 1000); - edp_write(phy->base + REG_EDP_PHY_CTRL, 0x000); - edp_write(phy->base + REG_EDP_PHY_GLB_PD_CTL, 0x3f); - edp_write(phy->base + REG_EDP_PHY_GLB_CFG, 0x1); - } else { - edp_write(phy->base + REG_EDP_PHY_GLB_PD_CTL, 0xc0); - } -} - -/* voltage mode and pre emphasis cfg */ -void msm_edp_phy_vm_pe_init(struct edp_phy *phy) -{ - edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG0, 0x3); - edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG1, 0x64); - edp_write(phy->base + REG_EDP_PHY_GLB_MISC9, 0x6c); -} - -void msm_edp_phy_vm_pe_cfg(struct edp_phy *phy, u32 v0, u32 v1) -{ - edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG0, v0); - edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG1, v1); -} - -void msm_edp_phy_lane_power_ctrl(struct edp_phy *phy, bool up, u32 max_lane) -{ - u32 i; - u32 data; - - if (up) - data = 0; /* power up */ - else - data = 0x7; /* power down */ - - for (i = 0; i < max_lane; i++) - edp_write(phy->base + REG_EDP_PHY_LN_PD_CTL(i) , data); - - /* power down unused lane */ - data = 0x7; /* power down */ - for (i = max_lane; i < EDP_MAX_LANE; i++) - edp_write(phy->base + REG_EDP_PHY_LN_PD_CTL(i) , data); -} - -void *msm_edp_phy_init(struct device *dev, void __iomem *regbase) -{ - struct edp_phy *phy = NULL; - - phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); - if (!phy) - return NULL; - - phy->base = regbase; - return phy; -} - diff --git a/drivers/gpu/drm/msm/edp/v200/edp.xml.h b/drivers/gpu/drm/msm/edp/v200/edp.xml.h new file mode 100644 index 0000000..7aed6cf --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp.xml.h @@ -0,0 +1,380 @@ +#ifndef EDP_XML +#define EDP_XML + +/* Autogenerated file, DO NOT EDIT manually! + +This file was generated by the rules-ng-ng headergen tool in this git repository: +http://github.com/freedreno/envytools/ +git clone https://github.com/freedreno/envytools.git + +The rules-ng-ng source files this header was generated from are: +- /home/robclark/src/envytools/rnndb/msm.xml ( 676 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/freedreno_copyright.xml ( 1572 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/mdp/mdp4.xml ( 20915 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/mdp/mdp_common.xml ( 2849 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/mdp/mdp5.xml ( 37411 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/dsi/dsi.xml ( 42301 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/dsi/sfpb.xml ( 602 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/dsi/mmss_cc.xml ( 1686 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/hdmi/qfprom.xml ( 600 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/hdmi/hdmi.xml ( 41874 bytes, from 2020-07-23 21:58:14) +- /home/robclark/src/envytools/rnndb/edp/edp.xml ( 10416 bytes, from 2020-07-23 21:58:14) + +Copyright (C) 2013-2020 by the following authors: +- Rob Clark robdclark@gmail.com (robclark) +- Ilia Mirkin imirkin@alum.mit.edu (imirkin) + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice (including the +next paragraph) shall be included in all copies or substantial +portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + + +enum edp_color_depth { + EDP_6BIT = 0, + EDP_8BIT = 1, + EDP_10BIT = 2, + EDP_12BIT = 3, + EDP_16BIT = 4, +}; + +enum edp_component_format { + EDP_RGB = 0, + EDP_YUV422 = 1, + EDP_YUV444 = 2, +}; + +#define REG_EDP_MAINLINK_CTRL 0x00000004 +#define EDP_MAINLINK_CTRL_ENABLE 0x00000001 +#define EDP_MAINLINK_CTRL_RESET 0x00000002 + +#define REG_EDP_STATE_CTRL 0x00000008 +#define EDP_STATE_CTRL_TRAIN_PATTERN_1 0x00000001 +#define EDP_STATE_CTRL_TRAIN_PATTERN_2 0x00000002 +#define EDP_STATE_CTRL_TRAIN_PATTERN_3 0x00000004 +#define EDP_STATE_CTRL_SYMBOL_ERR_RATE_MEAS 0x00000008 +#define EDP_STATE_CTRL_PRBS7 0x00000010 +#define EDP_STATE_CTRL_CUSTOM_80_BIT_PATTERN 0x00000020 +#define EDP_STATE_CTRL_SEND_VIDEO 0x00000040 +#define EDP_STATE_CTRL_PUSH_IDLE 0x00000080 + +#define REG_EDP_CONFIGURATION_CTRL 0x0000000c +#define EDP_CONFIGURATION_CTRL_SYNC_CLK 0x00000001 +#define EDP_CONFIGURATION_CTRL_STATIC_MVID 0x00000002 +#define EDP_CONFIGURATION_CTRL_PROGRESSIVE 0x00000004 +#define EDP_CONFIGURATION_CTRL_LANES__MASK 0x00000030 +#define EDP_CONFIGURATION_CTRL_LANES__SHIFT 4 +static inline uint32_t EDP_CONFIGURATION_CTRL_LANES(uint32_t val) +{ + return ((val) << EDP_CONFIGURATION_CTRL_LANES__SHIFT) & EDP_CONFIGURATION_CTRL_LANES__MASK; +} +#define EDP_CONFIGURATION_CTRL_ENHANCED_FRAMING 0x00000040 +#define EDP_CONFIGURATION_CTRL_COLOR__MASK 0x00000100 +#define EDP_CONFIGURATION_CTRL_COLOR__SHIFT 8 +static inline uint32_t EDP_CONFIGURATION_CTRL_COLOR(enum edp_color_depth val) +{ + return ((val) << EDP_CONFIGURATION_CTRL_COLOR__SHIFT) & EDP_CONFIGURATION_CTRL_COLOR__MASK; +} + +#define REG_EDP_SOFTWARE_MVID 0x00000014 + +#define REG_EDP_SOFTWARE_NVID 0x00000018 + +#define REG_EDP_TOTAL_HOR_VER 0x0000001c +#define EDP_TOTAL_HOR_VER_HORIZ__MASK 0x0000ffff +#define EDP_TOTAL_HOR_VER_HORIZ__SHIFT 0 +static inline uint32_t EDP_TOTAL_HOR_VER_HORIZ(uint32_t val) +{ + return ((val) << EDP_TOTAL_HOR_VER_HORIZ__SHIFT) & EDP_TOTAL_HOR_VER_HORIZ__MASK; +} +#define EDP_TOTAL_HOR_VER_VERT__MASK 0xffff0000 +#define EDP_TOTAL_HOR_VER_VERT__SHIFT 16 +static inline uint32_t EDP_TOTAL_HOR_VER_VERT(uint32_t val) +{ + return ((val) << EDP_TOTAL_HOR_VER_VERT__SHIFT) & EDP_TOTAL_HOR_VER_VERT__MASK; +} + +#define REG_EDP_START_HOR_VER_FROM_SYNC 0x00000020 +#define EDP_START_HOR_VER_FROM_SYNC_HORIZ__MASK 0x0000ffff +#define EDP_START_HOR_VER_FROM_SYNC_HORIZ__SHIFT 0 +static inline uint32_t EDP_START_HOR_VER_FROM_SYNC_HORIZ(uint32_t val) +{ + return ((val) << EDP_START_HOR_VER_FROM_SYNC_HORIZ__SHIFT) & EDP_START_HOR_VER_FROM_SYNC_HORIZ__MASK; +} +#define EDP_START_HOR_VER_FROM_SYNC_VERT__MASK 0xffff0000 +#define EDP_START_HOR_VER_FROM_SYNC_VERT__SHIFT 16 +static inline uint32_t EDP_START_HOR_VER_FROM_SYNC_VERT(uint32_t val) +{ + return ((val) << EDP_START_HOR_VER_FROM_SYNC_VERT__SHIFT) & EDP_START_HOR_VER_FROM_SYNC_VERT__MASK; +} + +#define REG_EDP_HSYNC_VSYNC_WIDTH_POLARITY 0x00000024 +#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__MASK 0x00007fff +#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__SHIFT 0 +static inline uint32_t EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ(uint32_t val) +{ + return ((val) << EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__SHIFT) & EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ__MASK; +} +#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_NHSYNC 0x00008000 +#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__MASK 0x7fff0000 +#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__SHIFT 16 +static inline uint32_t EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT(uint32_t val) +{ + return ((val) << EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__SHIFT) & EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT__MASK; +} +#define EDP_HSYNC_VSYNC_WIDTH_POLARITY_NVSYNC 0x80000000 + +#define REG_EDP_ACTIVE_HOR_VER 0x00000028 +#define EDP_ACTIVE_HOR_VER_HORIZ__MASK 0x0000ffff +#define EDP_ACTIVE_HOR_VER_HORIZ__SHIFT 0 +static inline uint32_t EDP_ACTIVE_HOR_VER_HORIZ(uint32_t val) +{ + return ((val) << EDP_ACTIVE_HOR_VER_HORIZ__SHIFT) & EDP_ACTIVE_HOR_VER_HORIZ__MASK; +} +#define EDP_ACTIVE_HOR_VER_VERT__MASK 0xffff0000 +#define EDP_ACTIVE_HOR_VER_VERT__SHIFT 16 +static inline uint32_t EDP_ACTIVE_HOR_VER_VERT(uint32_t val) +{ + return ((val) << EDP_ACTIVE_HOR_VER_VERT__SHIFT) & EDP_ACTIVE_HOR_VER_VERT__MASK; +} + +#define REG_EDP_MISC1_MISC0 0x0000002c +#define EDP_MISC1_MISC0_MISC0__MASK 0x000000ff +#define EDP_MISC1_MISC0_MISC0__SHIFT 0 +static inline uint32_t EDP_MISC1_MISC0_MISC0(uint32_t val) +{ + return ((val) << EDP_MISC1_MISC0_MISC0__SHIFT) & EDP_MISC1_MISC0_MISC0__MASK; +} +#define EDP_MISC1_MISC0_SYNC 0x00000001 +#define EDP_MISC1_MISC0_COMPONENT_FORMAT__MASK 0x00000006 +#define EDP_MISC1_MISC0_COMPONENT_FORMAT__SHIFT 1 +static inline uint32_t EDP_MISC1_MISC0_COMPONENT_FORMAT(enum edp_component_format val) +{ + return ((val) << EDP_MISC1_MISC0_COMPONENT_FORMAT__SHIFT) & EDP_MISC1_MISC0_COMPONENT_FORMAT__MASK; +} +#define EDP_MISC1_MISC0_CEA 0x00000008 +#define EDP_MISC1_MISC0_BT709_5 0x00000010 +#define EDP_MISC1_MISC0_COLOR__MASK 0x000000e0 +#define EDP_MISC1_MISC0_COLOR__SHIFT 5 +static inline uint32_t EDP_MISC1_MISC0_COLOR(enum edp_color_depth val) +{ + return ((val) << EDP_MISC1_MISC0_COLOR__SHIFT) & EDP_MISC1_MISC0_COLOR__MASK; +} +#define EDP_MISC1_MISC0_MISC1__MASK 0x0000ff00 +#define EDP_MISC1_MISC0_MISC1__SHIFT 8 +static inline uint32_t EDP_MISC1_MISC0_MISC1(uint32_t val) +{ + return ((val) << EDP_MISC1_MISC0_MISC1__SHIFT) & EDP_MISC1_MISC0_MISC1__MASK; +} +#define EDP_MISC1_MISC0_INTERLACED_ODD 0x00000100 +#define EDP_MISC1_MISC0_STEREO__MASK 0x00000600 +#define EDP_MISC1_MISC0_STEREO__SHIFT 9 +static inline uint32_t EDP_MISC1_MISC0_STEREO(uint32_t val) +{ + return ((val) << EDP_MISC1_MISC0_STEREO__SHIFT) & EDP_MISC1_MISC0_STEREO__MASK; +} + +#define REG_EDP_PHY_CTRL 0x00000074 +#define EDP_PHY_CTRL_SW_RESET_PLL 0x00000001 +#define EDP_PHY_CTRL_SW_RESET 0x00000004 + +#define REG_EDP_MAINLINK_READY 0x00000084 +#define EDP_MAINLINK_READY_TRAIN_PATTERN_1_READY 0x00000008 +#define EDP_MAINLINK_READY_TRAIN_PATTERN_2_READY 0x00000010 +#define EDP_MAINLINK_READY_TRAIN_PATTERN_3_READY 0x00000020 + +#define REG_EDP_AUX_CTRL 0x00000300 +#define EDP_AUX_CTRL_ENABLE 0x00000001 +#define EDP_AUX_CTRL_RESET 0x00000002 + +#define REG_EDP_INTERRUPT_REG_1 0x00000308 +#define EDP_INTERRUPT_REG_1_HPD 0x00000001 +#define EDP_INTERRUPT_REG_1_HPD_ACK 0x00000002 +#define EDP_INTERRUPT_REG_1_HPD_EN 0x00000004 +#define EDP_INTERRUPT_REG_1_AUX_I2C_DONE 0x00000008 +#define EDP_INTERRUPT_REG_1_AUX_I2C_DONE_ACK 0x00000010 +#define EDP_INTERRUPT_REG_1_AUX_I2C_DONE_EN 0x00000020 +#define EDP_INTERRUPT_REG_1_WRONG_ADDR 0x00000040 +#define EDP_INTERRUPT_REG_1_WRONG_ADDR_ACK 0x00000080 +#define EDP_INTERRUPT_REG_1_WRONG_ADDR_EN 0x00000100 +#define EDP_INTERRUPT_REG_1_TIMEOUT 0x00000200 +#define EDP_INTERRUPT_REG_1_TIMEOUT_ACK 0x00000400 +#define EDP_INTERRUPT_REG_1_TIMEOUT_EN 0x00000800 +#define EDP_INTERRUPT_REG_1_NACK_DEFER 0x00001000 +#define EDP_INTERRUPT_REG_1_NACK_DEFER_ACK 0x00002000 +#define EDP_INTERRUPT_REG_1_NACK_DEFER_EN 0x00004000 +#define EDP_INTERRUPT_REG_1_WRONG_DATA_CNT 0x00008000 +#define EDP_INTERRUPT_REG_1_WRONG_DATA_CNT_ACK 0x00010000 +#define EDP_INTERRUPT_REG_1_WRONG_DATA_CNT_EN 0x00020000 +#define EDP_INTERRUPT_REG_1_I2C_NACK 0x00040000 +#define EDP_INTERRUPT_REG_1_I2C_NACK_ACK 0x00080000 +#define EDP_INTERRUPT_REG_1_I2C_NACK_EN 0x00100000 +#define EDP_INTERRUPT_REG_1_I2C_DEFER 0x00200000 +#define EDP_INTERRUPT_REG_1_I2C_DEFER_ACK 0x00400000 +#define EDP_INTERRUPT_REG_1_I2C_DEFER_EN 0x00800000 +#define EDP_INTERRUPT_REG_1_PLL_UNLOCK 0x01000000 +#define EDP_INTERRUPT_REG_1_PLL_UNLOCK_ACK 0x02000000 +#define EDP_INTERRUPT_REG_1_PLL_UNLOCK_EN 0x04000000 +#define EDP_INTERRUPT_REG_1_AUX_ERROR 0x08000000 +#define EDP_INTERRUPT_REG_1_AUX_ERROR_ACK 0x10000000 +#define EDP_INTERRUPT_REG_1_AUX_ERROR_EN 0x20000000 + +#define REG_EDP_INTERRUPT_REG_2 0x0000030c +#define EDP_INTERRUPT_REG_2_READY_FOR_VIDEO 0x00000001 +#define EDP_INTERRUPT_REG_2_READY_FOR_VIDEO_ACK 0x00000002 +#define EDP_INTERRUPT_REG_2_READY_FOR_VIDEO_EN 0x00000004 +#define EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT 0x00000008 +#define EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT_ACK 0x00000010 +#define EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT_EN 0x00000020 +#define EDP_INTERRUPT_REG_2_FRAME_END 0x00000200 +#define EDP_INTERRUPT_REG_2_FRAME_END_ACK 0x00000080 +#define EDP_INTERRUPT_REG_2_FRAME_END_EN 0x00000100 +#define EDP_INTERRUPT_REG_2_CRC_UPDATED 0x00000200 +#define EDP_INTERRUPT_REG_2_CRC_UPDATED_ACK 0x00000400 +#define EDP_INTERRUPT_REG_2_CRC_UPDATED_EN 0x00000800 + +#define REG_EDP_INTERRUPT_TRANS_NUM 0x00000310 + +#define REG_EDP_AUX_DATA 0x00000314 +#define EDP_AUX_DATA_READ 0x00000001 +#define EDP_AUX_DATA_DATA__MASK 0x0000ff00 +#define EDP_AUX_DATA_DATA__SHIFT 8 +static inline uint32_t EDP_AUX_DATA_DATA(uint32_t val) +{ + return ((val) << EDP_AUX_DATA_DATA__SHIFT) & EDP_AUX_DATA_DATA__MASK; +} +#define EDP_AUX_DATA_INDEX__MASK 0x00ff0000 +#define EDP_AUX_DATA_INDEX__SHIFT 16 +static inline uint32_t EDP_AUX_DATA_INDEX(uint32_t val) +{ + return ((val) << EDP_AUX_DATA_INDEX__SHIFT) & EDP_AUX_DATA_INDEX__MASK; +} +#define EDP_AUX_DATA_INDEX_WRITE 0x80000000 + +#define REG_EDP_AUX_TRANS_CTRL 0x00000318 +#define EDP_AUX_TRANS_CTRL_I2C 0x00000100 +#define EDP_AUX_TRANS_CTRL_GO 0x00000200 + +#define REG_EDP_AUX_STATUS 0x00000324 + +static inline uint32_t REG_EDP_PHY_LN(uint32_t i0) { return 0x00000400 + 0x40*i0; } + +static inline uint32_t REG_EDP_PHY_LN_PD_CTL(uint32_t i0) { return 0x00000404 + 0x40*i0; } + +#define REG_EDP_PHY_GLB_VM_CFG0 0x00000510 + +#define REG_EDP_PHY_GLB_VM_CFG1 0x00000514 + +#define REG_EDP_PHY_GLB_MISC9 0x00000518 + +#define REG_EDP_PHY_GLB_CFG 0x00000528 + +#define REG_EDP_PHY_GLB_PD_CTL 0x0000052c + +#define REG_EDP_PHY_GLB_PHY_STATUS 0x00000598 + +#define REG_EDP_28nm_PHY_PLL_REFCLK_CFG 0x00000000 + +#define REG_EDP_28nm_PHY_PLL_POSTDIV1_CFG 0x00000004 + +#define REG_EDP_28nm_PHY_PLL_CHGPUMP_CFG 0x00000008 + +#define REG_EDP_28nm_PHY_PLL_VCOLPF_CFG 0x0000000c + +#define REG_EDP_28nm_PHY_PLL_VREG_CFG 0x00000010 + +#define REG_EDP_28nm_PHY_PLL_PWRGEN_CFG 0x00000014 + +#define REG_EDP_28nm_PHY_PLL_DMUX_CFG 0x00000018 + +#define REG_EDP_28nm_PHY_PLL_AMUX_CFG 0x0000001c + +#define REG_EDP_28nm_PHY_PLL_GLB_CFG 0x00000020 +#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_PWRDN_B 0x00000001 +#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_LDO_PWRDN_B 0x00000002 +#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_PWRGEN_PWRDN_B 0x00000004 +#define EDP_28nm_PHY_PLL_GLB_CFG_PLL_ENABLE 0x00000008 + +#define REG_EDP_28nm_PHY_PLL_POSTDIV2_CFG 0x00000024 + +#define REG_EDP_28nm_PHY_PLL_POSTDIV3_CFG 0x00000028 + +#define REG_EDP_28nm_PHY_PLL_LPFR_CFG 0x0000002c + +#define REG_EDP_28nm_PHY_PLL_LPFC1_CFG 0x00000030 + +#define REG_EDP_28nm_PHY_PLL_LPFC2_CFG 0x00000034 + +#define REG_EDP_28nm_PHY_PLL_SDM_CFG0 0x00000038 + +#define REG_EDP_28nm_PHY_PLL_SDM_CFG1 0x0000003c + +#define REG_EDP_28nm_PHY_PLL_SDM_CFG2 0x00000040 + +#define REG_EDP_28nm_PHY_PLL_SDM_CFG3 0x00000044 + +#define REG_EDP_28nm_PHY_PLL_SDM_CFG4 0x00000048 + +#define REG_EDP_28nm_PHY_PLL_SSC_CFG0 0x0000004c + +#define REG_EDP_28nm_PHY_PLL_SSC_CFG1 0x00000050 + +#define REG_EDP_28nm_PHY_PLL_SSC_CFG2 0x00000054 + +#define REG_EDP_28nm_PHY_PLL_SSC_CFG3 0x00000058 + +#define REG_EDP_28nm_PHY_PLL_LKDET_CFG0 0x0000005c + +#define REG_EDP_28nm_PHY_PLL_LKDET_CFG1 0x00000060 + +#define REG_EDP_28nm_PHY_PLL_LKDET_CFG2 0x00000064 + +#define REG_EDP_28nm_PHY_PLL_TEST_CFG 0x00000068 +#define EDP_28nm_PHY_PLL_TEST_CFG_PLL_SW_RESET 0x00000001 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG0 0x0000006c + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG1 0x00000070 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG2 0x00000074 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG3 0x00000078 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG4 0x0000007c + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG5 0x00000080 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG6 0x00000084 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG7 0x00000088 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG8 0x0000008c + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG9 0x00000090 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG10 0x00000094 + +#define REG_EDP_28nm_PHY_PLL_CAL_CFG11 0x00000098 + +#define REG_EDP_28nm_PHY_PLL_EFUSE_CFG 0x0000009c + +#define REG_EDP_28nm_PHY_PLL_DEBUG_BUS_SEL 0x000000a0 + + +#endif /* EDP_XML */ diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200.c b/drivers/gpu/drm/msm/edp/v200/edp_v200.c new file mode 100644 index 0000000..ccbe378 --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#include <linux/of_irq.h> +#include "edp_v200.h" + +static irqreturn_t edp_irq(int irq, void *dev_id) +{ + struct msm_edp_v200 *edp = dev_id; + + /* Process eDP irq */ + return msm_edp_ctrl_irq(edp->ctrl); +} + +static void edp_destroy(struct platform_device *pdev) +{ + struct msm_edp_v200 *edp = platform_get_drvdata(pdev); + + if (!edp) + return; + + if (edp->ctrl) { + msm_edp_ctrl_destroy(edp->ctrl); + edp->ctrl = NULL; + } + + platform_set_drvdata(pdev, NULL); +} + +/* construct eDP at bind/probe time, grab all the resources. */ +static struct msm_edp *edp_init(struct platform_device *pdev) +{ + struct msm_edp_v200 *edp = NULL; + int ret; + + if (!pdev) { + pr_err("no eDP device\n"); + ret = -ENXIO; + goto fail; + } + + edp = devm_kzalloc(&pdev->dev, sizeof(*edp), GFP_KERNEL); + if (!edp) { + ret = -ENOMEM; + goto fail; + } + DBG("eDP v200 probed=%p", edp); + edp->base.version = MSM_EDP_VERSION_200; + + edp->base.pdev = pdev; + platform_set_drvdata(pdev, edp); + + ret = msm_edp_ctrl_init(edp); + if (ret) + goto fail; + + return &edp->base; + +fail: + if (edp) + edp_destroy(pdev); + + return ERR_PTR(ret); +} + +static int edp_bind(struct device *dev, struct device *master, void *data) +{ + struct drm_device *drm = dev_get_drvdata(master); + struct msm_drm_private *priv = drm->dev_private; + struct msm_edp *edp; + + DBG(""); + edp = edp_init(to_platform_device(dev)); + if (IS_ERR(edp)) + return PTR_ERR(edp); + priv->edp = edp; + + return 0; +} + +static void edp_unbind(struct device *dev, struct device *master, void *data) +{ + struct drm_device *drm = dev_get_drvdata(master); + struct msm_drm_private *priv = drm->dev_private; + + DBG(""); + if (priv->edp) { + edp_destroy(to_platform_device(dev)); + priv->edp = NULL; + } +} + +static const struct component_ops edp_ops = { + .bind = edp_bind, + .unbind = edp_unbind, +}; + +static int edp_dev_probe(struct platform_device *pdev) +{ + DBG(""); + return component_add(&pdev->dev, &edp_ops); +} + +static int edp_dev_remove(struct platform_device *pdev) +{ + DBG(""); + component_del(&pdev->dev, &edp_ops); + return 0; +} + +static const struct of_device_id dt_match[] = { + { .compatible = "qcom,mdss-edp" }, + {} +}; + +static struct platform_driver edp_driver = { + .probe = edp_dev_probe, + .remove = edp_dev_remove, + .driver = { + .name = "msm_edp", + .of_match_table = dt_match, + }, +}; + +void __init msm_edp_v200_register(void) +{ + DBG(""); + platform_driver_register(&edp_driver); +} + +void __exit msm_edp_v200_unregister(void) +{ + DBG(""); + platform_driver_unregister(&edp_driver); +} + +/* Second part of initialization, the drm/kms level modeset_init */ +int msm_edp_v200_modeset_init(struct msm_edp *edp, struct drm_device *dev, + struct drm_encoder *encoder) +{ + struct platform_device *pdev = edp->pdev; + struct msm_drm_private *priv = dev->dev_private; + struct msm_edp_v200 *edp_ptr = NULL; + int ret; + + if (WARN_ON(!encoder) || WARN_ON(!edp) || WARN_ON(!dev)) + return -EINVAL; + + edp->encoder = encoder; + edp->dev = dev; + + edp_ptr = container_of(edp, struct msm_edp_v200, base); + if (IS_ERR(edp_ptr)) { + ret = PTR_ERR(edp_ptr); + DRM_DEV_ERROR(dev->dev, "failed to retrieve edp_v510 ptr: %d\n", ret); + goto fail; + } + + edp_ptr->base.bridge = msm_edp_bridge_init(edp_ptr); + if (IS_ERR(edp_ptr->base.bridge)) { + ret = PTR_ERR(edp_ptr->base.bridge); + DRM_DEV_ERROR(dev->dev, "failed to create eDP bridge: %d\n", ret); + edp_ptr->base.bridge = NULL; + goto fail; + } + + edp_ptr->base.connector = msm_edp_connector_init(edp_ptr); + if (IS_ERR(edp_ptr->base.connector)) { + ret = PTR_ERR(edp_ptr->base.connector); + DRM_DEV_ERROR(dev->dev, "failed to create eDP connector: %d\n", ret); + edp_ptr->base.connector = NULL; + goto fail; + } + + edp_ptr->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + if (edp_ptr->irq < 0) { + ret = edp_ptr->irq; + DRM_DEV_ERROR(dev->dev, "failed to get IRQ: %d\n", ret); + goto fail; + } + + ret = devm_request_irq(&pdev->dev, edp_ptr->irq, + edp_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + "edp_isr", edp_ptr); + if (ret < 0) { + DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n", + edp_ptr->irq, ret); + goto fail; + } + + priv->bridges[priv->num_bridges++] = edp->bridge; + priv->connectors[priv->num_connectors++] = edp->connector; + + return 0; + +fail: + /* bridge/connector are normally destroyed by drm */ + if (edp->bridge) { + edp_bridge_destroy(edp->bridge); + edp->bridge = NULL; + } + if (edp->connector) { + edp->connector->funcs->destroy(edp->connector); + edp->connector = NULL; + } + + return ret; +} diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200.h b/drivers/gpu/drm/msm/edp/v200/edp_v200.h new file mode 100644 index 0000000..f9bd35a --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#ifndef __EDP_V200_CONNECTOR_H__ +#define __EDP_V200_CONNECTOR_H__ + +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc.h> +#include <drm/drm_dp_helper.h> + +#include "msm_drv.h" +#include "../edp_common.h" + +#define edp_read(offset) msm_readl((offset)) +#define edp_write(offset, data) msm_writel((data), (offset)) + +struct edp_ctrl; +struct edp_aux; +struct edp_phy; + +struct msm_edp_v200 { + struct msm_edp base; + struct edp_ctrl *ctrl; + int irq; +}; + +/* eDP bridge */ +struct drm_bridge *msm_edp_bridge_init(struct msm_edp_v200 *edp); +void edp_bridge_destroy(struct drm_bridge *bridge); + +/* eDP connector */ +struct drm_connector *msm_edp_connector_init(struct msm_edp_v200 *edp); + +/* AUX */ +void *msm_edp_aux_init(struct device *dev, void __iomem *regbase, + struct drm_dp_aux **drm_aux); +void msm_edp_aux_destroy(struct device *dev, struct edp_aux *aux); +irqreturn_t msm_edp_aux_irq(struct edp_aux *aux, u32 isr); +void msm_edp_aux_ctrl(struct edp_aux *aux, int enable); + +/* Phy */ +bool msm_edp_phy_ready(struct edp_phy *phy); +void msm_edp_phy_ctrl(struct edp_phy *phy, int enable); +void msm_edp_phy_vm_pe_init(struct edp_phy *phy); +void msm_edp_phy_vm_pe_cfg(struct edp_phy *phy, u32 v0, u32 v1); +void msm_edp_phy_lane_power_ctrl(struct edp_phy *phy, bool up, u32 max_lane); +void *msm_edp_phy_init(struct device *dev, void __iomem *regbase); + +/* Ctrl */ +irqreturn_t msm_edp_ctrl_irq(struct edp_ctrl *ctrl); +void msm_edp_ctrl_power(struct edp_ctrl *ctrl, bool on); +int msm_edp_ctrl_init(struct msm_edp_v200 *edp); +void msm_edp_ctrl_destroy(struct edp_ctrl *ctrl); +bool msm_edp_ctrl_panel_connected(struct edp_ctrl *ctrl); +int msm_edp_ctrl_get_panel_info(struct edp_ctrl *ctrl, + struct drm_connector *connector, struct edid **edid); +int msm_edp_ctrl_timing_cfg(struct edp_ctrl *ctrl, + const struct drm_display_mode *mode, + const struct drm_display_info *info); +/* @pixel_rate is in kHz */ +bool msm_edp_ctrl_pixel_clock_valid(struct edp_ctrl *ctrl, + u32 pixel_rate, u32 *pm, u32 *pn); + +#endif /* __EDP_V200_CONNECTOR_H__ */ diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200_aux.c b/drivers/gpu/drm/msm/edp/v200/edp_v200_aux.c new file mode 100644 index 0000000..1540acb --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200_aux.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#include "edp_v200.h" +#include "edp.xml.h" + +#define AUX_CMD_FIFO_LEN 144 +#define AUX_CMD_NATIVE_MAX 16 +#define AUX_CMD_I2C_MAX 128 + +#define EDP_INTR_AUX_I2C_ERR \ + (EDP_INTERRUPT_REG_1_WRONG_ADDR | EDP_INTERRUPT_REG_1_TIMEOUT | \ + EDP_INTERRUPT_REG_1_NACK_DEFER | EDP_INTERRUPT_REG_1_WRONG_DATA_CNT | \ + EDP_INTERRUPT_REG_1_I2C_NACK | EDP_INTERRUPT_REG_1_I2C_DEFER) +#define EDP_INTR_TRANS_STATUS \ + (EDP_INTERRUPT_REG_1_AUX_I2C_DONE | EDP_INTR_AUX_I2C_ERR) + +struct edp_aux { + void __iomem *base; + bool msg_err; + + struct completion msg_comp; + + /* To prevent the message transaction routine from reentry. */ + struct mutex msg_mutex; + + struct drm_dp_aux drm_aux; +}; +#define to_edp_aux(x) container_of(x, struct edp_aux, drm_aux) + +static int edp_msg_fifo_tx(struct edp_aux *aux, struct drm_dp_aux_msg *msg) +{ + u32 data[4]; + u32 reg, len; + bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ); + bool read = msg->request & (DP_AUX_I2C_READ & DP_AUX_NATIVE_READ); + u8 *msgdata = msg->buffer; + int i; + + if (read) + len = 4; + else + len = msg->size + 4; + + /* + * cmd fifo only has depth of 144 bytes + */ + if (len > AUX_CMD_FIFO_LEN) + return -EINVAL; + + /* Pack cmd and write to HW */ + data[0] = (msg->address >> 16) & 0xf; /* addr[19:16] */ + if (read) + data[0] |= BIT(4); /* R/W */ + + data[1] = (msg->address >> 8) & 0xff; /* addr[15:8] */ + data[2] = msg->address & 0xff; /* addr[7:0] */ + data[3] = (msg->size - 1) & 0xff; /* len[7:0] */ + + for (i = 0; i < len; i++) { + reg = (i < 4) ? data[i] : msgdata[i - 4]; + reg = EDP_AUX_DATA_DATA(reg); /* index = 0, write */ + if (i == 0) + reg |= EDP_AUX_DATA_INDEX_WRITE; + edp_write(aux->base + REG_EDP_AUX_DATA, reg); + } + + reg = 0; /* Transaction number is always 1 */ + if (!native) /* i2c */ + reg |= EDP_AUX_TRANS_CTRL_I2C; + + reg |= EDP_AUX_TRANS_CTRL_GO; + edp_write(aux->base + REG_EDP_AUX_TRANS_CTRL, reg); + + return 0; +} + +static int edp_msg_fifo_rx(struct edp_aux *aux, struct drm_dp_aux_msg *msg) +{ + u32 data; + u8 *dp; + int i; + u32 len = msg->size; + + edp_write(aux->base + REG_EDP_AUX_DATA, + EDP_AUX_DATA_INDEX_WRITE | EDP_AUX_DATA_READ); /* index = 0 */ + + dp = msg->buffer; + + /* discard first byte */ + data = edp_read(aux->base + REG_EDP_AUX_DATA); + for (i = 0; i < len; i++) { + data = edp_read(aux->base + REG_EDP_AUX_DATA); + dp[i] = (u8)((data >> 8) & 0xff); + } + + return 0; +} + +/* + * This function does the real job to process an AUX transaction. + * It will call msm_edp_aux_ctrl() function to reset the AUX channel, + * if the waiting is timeout. + * The caller who triggers the transaction should avoid the + * msm_edp_aux_ctrl() running concurrently in other threads, i.e. + * start transaction only when AUX channel is fully enabled. + */ +static ssize_t edp_aux_transfer(struct drm_dp_aux *drm_aux, + struct drm_dp_aux_msg *msg) +{ + struct edp_aux *aux = to_edp_aux(drm_aux); + ssize_t ret; + unsigned long time_left; + bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ); + bool read = msg->request & (DP_AUX_I2C_READ & DP_AUX_NATIVE_READ); + + /* Ignore address only message */ + if ((msg->size == 0) || (msg->buffer == NULL)) { + msg->reply = native ? + DP_AUX_NATIVE_REPLY_ACK : DP_AUX_I2C_REPLY_ACK; + return msg->size; + } + + /* msg sanity check */ + if ((native && (msg->size > AUX_CMD_NATIVE_MAX)) || + (msg->size > AUX_CMD_I2C_MAX)) { + pr_err("%s: invalid msg: size(%zu), request(%x)\n", + __func__, msg->size, msg->request); + return -EINVAL; + } + + mutex_lock(&aux->msg_mutex); + + aux->msg_err = false; + reinit_completion(&aux->msg_comp); + + ret = edp_msg_fifo_tx(aux, msg); + if (ret < 0) + goto unlock_exit; + + DBG("wait_for_completion"); + time_left = wait_for_completion_timeout(&aux->msg_comp, + msecs_to_jiffies(300)); + if (!time_left) { + /* + * Clear GO and reset AUX channel + * to cancel the current transaction. + */ + edp_write(aux->base + REG_EDP_AUX_TRANS_CTRL, 0); + msm_edp_aux_ctrl(aux, 1); + pr_err("%s: aux timeout,\n", __func__); + ret = -ETIMEDOUT; + goto unlock_exit; + } + DBG("completion"); + + if (!aux->msg_err) { + if (read) { + ret = edp_msg_fifo_rx(aux, msg); + if (ret < 0) + goto unlock_exit; + } + + msg->reply = native ? + DP_AUX_NATIVE_REPLY_ACK : DP_AUX_I2C_REPLY_ACK; + } else { + /* Reply defer to retry */ + msg->reply = native ? + DP_AUX_NATIVE_REPLY_DEFER : DP_AUX_I2C_REPLY_DEFER; + /* + * The sleep time in caller is not long enough to make sure + * our H/W completes transactions. Add more defer time here. + */ + msleep(100); + } + + /* Return requested size for success or retry */ + ret = msg->size; + +unlock_exit: + mutex_unlock(&aux->msg_mutex); + return ret; +} + +void *msm_edp_aux_init(struct device *dev, void __iomem *regbase, + struct drm_dp_aux **drm_aux) +{ + struct edp_aux *aux = NULL; + int ret; + + DBG(""); + aux = devm_kzalloc(dev, sizeof(*aux), GFP_KERNEL); + if (!aux) + return NULL; + + aux->base = regbase; + mutex_init(&aux->msg_mutex); + init_completion(&aux->msg_comp); + + aux->drm_aux.name = "msm_edp_aux"; + aux->drm_aux.dev = dev; + aux->drm_aux.transfer = edp_aux_transfer; + ret = drm_dp_aux_register(&aux->drm_aux); + if (ret) { + pr_err("%s: failed to register drm aux: %d\n", __func__, ret); + mutex_destroy(&aux->msg_mutex); + } + + if (drm_aux && aux) + *drm_aux = &aux->drm_aux; + + return aux; +} + +void msm_edp_aux_destroy(struct device *dev, struct edp_aux *aux) +{ + if (aux) { + drm_dp_aux_unregister(&aux->drm_aux); + mutex_destroy(&aux->msg_mutex); + } +} + +irqreturn_t msm_edp_aux_irq(struct edp_aux *aux, u32 isr) +{ + if (isr & EDP_INTR_TRANS_STATUS) { + DBG("isr=%x", isr); + edp_write(aux->base + REG_EDP_AUX_TRANS_CTRL, 0); + + if (isr & EDP_INTR_AUX_I2C_ERR) + aux->msg_err = true; + else + aux->msg_err = false; + + complete(&aux->msg_comp); + } + + return IRQ_HANDLED; +} + +void msm_edp_aux_ctrl(struct edp_aux *aux, int enable) +{ + u32 data; + + DBG("enable=%d", enable); + data = edp_read(aux->base + REG_EDP_AUX_CTRL); + + if (enable) { + data |= EDP_AUX_CTRL_RESET; + edp_write(aux->base + REG_EDP_AUX_CTRL, data); + /* Make sure full reset */ + wmb(); + usleep_range(500, 1000); + + data &= ~EDP_AUX_CTRL_RESET; + data |= EDP_AUX_CTRL_ENABLE; + edp_write(aux->base + REG_EDP_AUX_CTRL, data); + } else { + data &= ~EDP_AUX_CTRL_ENABLE; + edp_write(aux->base + REG_EDP_AUX_CTRL, data); + } +} + diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200_bridge.c b/drivers/gpu/drm/msm/edp/v200/edp_v200_bridge.c new file mode 100644 index 0000000..a2b8ef2 --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200_bridge.c @@ -0,0 +1,111 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#include "edp_v200.h" + +struct edp_bridge { + struct drm_bridge base; + struct msm_edp_v200 *edp; +}; +#define to_edp_bridge(x) container_of(x, struct edp_bridge, base) + +void edp_bridge_destroy(struct drm_bridge *bridge) +{ +} + +static void edp_bridge_pre_enable(struct drm_bridge *bridge) +{ + struct edp_bridge *edp_bridge = to_edp_bridge(bridge); + struct msm_edp_v200 *edp = edp_bridge->edp; + + DBG(""); + msm_edp_ctrl_power(edp->ctrl, true); +} + +static void edp_bridge_enable(struct drm_bridge *bridge) +{ + DBG(""); +} + +static void edp_bridge_disable(struct drm_bridge *bridge) +{ + DBG(""); +} + +static void edp_bridge_post_disable(struct drm_bridge *bridge) +{ + struct edp_bridge *edp_bridge = to_edp_bridge(bridge); + struct msm_edp_v200 *edp = edp_bridge->edp; + + DBG(""); + msm_edp_ctrl_power(edp->ctrl, false); +} + +static void edp_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct drm_device *dev = bridge->dev; + struct drm_connector *connector; + struct edp_bridge *edp_bridge = to_edp_bridge(bridge); + struct msm_edp_v200 *edp = edp_bridge->edp; + + DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode)); + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + struct drm_encoder *encoder = connector->encoder; + struct drm_bridge *first_bridge; + + if (!connector->encoder) + continue; + + first_bridge = drm_bridge_chain_get_first_bridge(encoder); + if (bridge == first_bridge) { + msm_edp_ctrl_timing_cfg(edp->ctrl, + adjusted_mode, &connector->display_info); + break; + } + } +} + +static const struct drm_bridge_funcs edp_bridge_funcs = { + .pre_enable = edp_bridge_pre_enable, + .enable = edp_bridge_enable, + .disable = edp_bridge_disable, + .post_disable = edp_bridge_post_disable, + .mode_set = edp_bridge_mode_set, +}; + +/* initialize bridge */ +struct drm_bridge *msm_edp_bridge_init(struct msm_edp_v200 *edp) +{ + struct drm_bridge *bridge = NULL; + struct edp_bridge *edp_bridge; + int ret; + + edp_bridge = devm_kzalloc(edp->base.dev->dev, + sizeof(*edp_bridge), GFP_KERNEL); + if (!edp_bridge) { + ret = -ENOMEM; + goto fail; + } + + edp_bridge->edp = edp; + + bridge = &edp_bridge->base; + bridge->funcs = &edp_bridge_funcs; + + ret = drm_bridge_attach(edp->base.encoder, bridge, NULL, 0); + if (ret) + goto fail; + + return bridge; + +fail: + if (bridge) + edp_bridge_destroy(bridge); + + return ERR_PTR(ret); +} diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200_connector.c b/drivers/gpu/drm/msm/edp/v200/edp_v200_connector.c new file mode 100644 index 0000000..7d42d21 --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200_connector.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#include "drm/drm_edid.h" +#include "msm_kms.h" +#include "edp_v200.h" + +struct edp_connector { + struct drm_connector base; + struct msm_edp_v200 *edp; +}; +#define to_edp_connector(x) container_of(x, struct edp_connector, base) + +static enum drm_connector_status edp_connector_detect( + struct drm_connector *connector, bool force) +{ + struct edp_connector *edp_connector = to_edp_connector(connector); + struct msm_edp_v200 *edp = edp_connector->edp; + + DBG(""); + return msm_edp_ctrl_panel_connected(edp->ctrl) ? + connector_status_connected : connector_status_disconnected; +} + +static void edp_connector_destroy(struct drm_connector *connector) +{ + struct edp_connector *edp_connector = to_edp_connector(connector); + + DBG(""); + + drm_connector_cleanup(connector); + + kfree(edp_connector); +} + +static int edp_connector_get_modes(struct drm_connector *connector) +{ + struct edp_connector *edp_connector = to_edp_connector(connector); + struct msm_edp_v200 *edp = edp_connector->edp; + + struct edid *drm_edid = NULL; + int ret = 0; + + DBG(""); + ret = msm_edp_ctrl_get_panel_info(edp->ctrl, connector, &drm_edid); + if (ret) + return ret; + + drm_connector_update_edid_property(connector, drm_edid); + if (drm_edid) + ret = drm_add_edid_modes(connector, drm_edid); + + return ret; +} + +static int edp_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct edp_connector *edp_connector = to_edp_connector(connector); + struct msm_edp_v200 *edp = edp_connector->edp; + struct msm_drm_private *priv = connector->dev->dev_private; + struct msm_kms *kms = priv->kms; + long actual, requested; + + requested = 1000 * mode->clock; + actual = kms->funcs->round_pixclk(kms, + requested, edp_connector->edp->base.encoder); + + DBG("requested=%ld, actual=%ld", requested, actual); + if (actual != requested) + return MODE_CLOCK_RANGE; + + if (!msm_edp_ctrl_pixel_clock_valid( + edp->ctrl, mode->clock, NULL, NULL)) + return MODE_CLOCK_RANGE; + + /* Invalidate all modes if color format is not supported */ + if (connector->display_info.bpc > 8) + return MODE_BAD; + + return MODE_OK; +} + +static const struct drm_connector_funcs edp_connector_funcs = { + .detect = edp_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = edp_connector_destroy, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static const struct drm_connector_helper_funcs edp_connector_helper_funcs = { + .get_modes = edp_connector_get_modes, + .mode_valid = edp_connector_mode_valid, +}; + +/* initialize connector */ +struct drm_connector *msm_edp_connector_init(struct msm_edp_v200 *edp) +{ + struct drm_connector *connector = NULL; + struct edp_connector *edp_connector; + int ret; + + edp_connector = kzalloc(sizeof(*edp_connector), GFP_KERNEL); + if (!edp_connector) + return ERR_PTR(-ENOMEM); + + edp_connector->edp = edp; + + connector = &edp_connector->base; + + ret = drm_connector_init(edp->base.dev, connector, &edp_connector_funcs, + DRM_MODE_CONNECTOR_eDP); + if (ret) + return ERR_PTR(ret); + + drm_connector_helper_add(connector, &edp_connector_helper_funcs); + + /* We don't support HPD, so only poll status until connected. */ + connector->polled = DRM_CONNECTOR_POLL_CONNECT; + + /* Display driver doesn't support interlace now. */ + connector->interlace_allowed = false; + connector->doublescan_allowed = false; + + drm_connector_attach_encoder(connector, edp->base.encoder); + + return connector; +} diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200_ctrl.c b/drivers/gpu/drm/msm/edp/v200/edp_v200_ctrl.c new file mode 100644 index 0000000..dc8254a --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200_ctrl.c @@ -0,0 +1,1375 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#include <linux/clk.h> +#include <linux/gpio/consumer.h> +#include <linux/regulator/consumer.h> +#include <drm/drm_crtc.h> +#include <drm/drm_dp_helper.h> +#include <drm/drm_edid.h> + +#include "edp_v200.h" +#include "edp.xml.h" + +#define VDDA_UA_ON_LOAD 100000 /* uA units */ +#define VDDA_UA_OFF_LOAD 100 /* uA units */ + +#define DPCD_LINK_VOLTAGE_MAX 4 +#define DPCD_LINK_PRE_EMPHASIS_MAX 4 + +#define EDP_LINK_BW_MAX DP_LINK_BW_2_7 + +/* Link training return value */ +#define EDP_TRAIN_FAIL -1 +#define EDP_TRAIN_SUCCESS 0 +#define EDP_TRAIN_RECONFIG 1 + +#define EDP_CLK_MASK_AHB BIT(0) +#define EDP_CLK_MASK_AUX BIT(1) +#define EDP_CLK_MASK_LINK BIT(2) +#define EDP_CLK_MASK_PIXEL BIT(3) +#define EDP_CLK_MASK_MDP_CORE BIT(4) +#define EDP_CLK_MASK_LINK_CHAN (EDP_CLK_MASK_LINK | EDP_CLK_MASK_PIXEL) +#define EDP_CLK_MASK_AUX_CHAN \ + (EDP_CLK_MASK_AHB | EDP_CLK_MASK_AUX | EDP_CLK_MASK_MDP_CORE) +#define EDP_CLK_MASK_ALL (EDP_CLK_MASK_AUX_CHAN | EDP_CLK_MASK_LINK_CHAN) + +#define EDP_BACKLIGHT_MAX 255 + +#define EDP_INTR_STATUS1 \ + (EDP_INTERRUPT_REG_1_HPD | EDP_INTERRUPT_REG_1_AUX_I2C_DONE | \ + EDP_INTERRUPT_REG_1_WRONG_ADDR | EDP_INTERRUPT_REG_1_TIMEOUT | \ + EDP_INTERRUPT_REG_1_NACK_DEFER | EDP_INTERRUPT_REG_1_WRONG_DATA_CNT | \ + EDP_INTERRUPT_REG_1_I2C_NACK | EDP_INTERRUPT_REG_1_I2C_DEFER | \ + EDP_INTERRUPT_REG_1_PLL_UNLOCK | EDP_INTERRUPT_REG_1_AUX_ERROR) +#define EDP_INTR_MASK1 (EDP_INTR_STATUS1 << 2) +#define EDP_INTR_STATUS2 \ + (EDP_INTERRUPT_REG_2_READY_FOR_VIDEO | \ + EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT | \ + EDP_INTERRUPT_REG_2_FRAME_END | EDP_INTERRUPT_REG_2_CRC_UPDATED) +#define EDP_INTR_MASK2 (EDP_INTR_STATUS2 << 2) + +struct edp_ctrl { + struct platform_device *pdev; + + void __iomem *base; + + /* regulators */ + struct regulator *vdda_vreg; /* 1.8 V */ + struct regulator *lvl_vreg; + + /* clocks */ + struct clk *aux_clk; + struct clk *pixel_clk; + struct clk *ahb_clk; + struct clk *link_clk; + struct clk *mdp_core_clk; + + /* gpios */ + struct gpio_desc *panel_en_gpio; + struct gpio_desc *panel_hpd_gpio; + + /* completion and mutex */ + struct completion idle_comp; + struct mutex dev_mutex; /* To protect device power status */ + + /* work queue */ + struct work_struct on_work; + struct work_struct off_work; + struct workqueue_struct *workqueue; + + /* Interrupt register lock */ + spinlock_t irq_lock; + + bool edp_connected; + bool power_on; + + /* edid raw data */ + struct edid *edid; + + struct drm_dp_aux *drm_aux; + + /* dpcd raw data */ + u8 dpcd[DP_RECEIVER_CAP_SIZE]; + + /* Link status */ + u8 link_rate; + u8 lane_cnt; + u8 v_level; + u8 p_level; + + /* Timing status */ + u8 interlaced; + u32 pixel_rate; /* in kHz */ + u32 color_depth; + + struct edp_aux *aux; + struct edp_phy *phy; +}; + +struct edp_pixel_clk_div { + u32 rate; /* in kHz */ + u32 m; + u32 n; +}; + +#define EDP_PIXEL_CLK_NUM 8 +static const struct edp_pixel_clk_div clk_divs[2][EDP_PIXEL_CLK_NUM] = { + { /* Link clock = 162MHz, source clock = 810MHz */ + {119000, 31, 211}, /* WSXGA+ 1680x1050@60Hz CVT */ + {130250, 32, 199}, /* UXGA 1600x1200@60Hz CVT */ + {148500, 11, 60}, /* FHD 1920x1080@60Hz */ + {154000, 50, 263}, /* WUXGA 1920x1200@60Hz CVT */ + {209250, 31, 120}, /* QXGA 2048x1536@60Hz CVT */ + {268500, 119, 359}, /* WQXGA 2560x1600@60Hz CVT */ + {138530, 33, 193}, /* AUO B116HAN03.0 Panel */ + {141400, 48, 275}, /* AUO B133HTN01.2 Panel */ + }, + { /* Link clock = 270MHz, source clock = 675MHz */ + {119000, 52, 295}, /* WSXGA+ 1680x1050@60Hz CVT */ + {130250, 11, 57}, /* UXGA 1600x1200@60Hz CVT */ + {148500, 11, 50}, /* FHD 1920x1080@60Hz */ + {154000, 47, 206}, /* WUXGA 1920x1200@60Hz CVT */ + {209250, 31, 100}, /* QXGA 2048x1536@60Hz CVT */ + {268500, 107, 269}, /* WQXGA 2560x1600@60Hz CVT */ + {138530, 63, 307}, /* AUO B116HAN03.0 Panel */ + {141400, 53, 253}, /* AUO B133HTN01.2 Panel */ + }, +}; + +static int edp_clk_init(struct edp_ctrl *ctrl) +{ + struct platform_device *pdev = ctrl->pdev; + int ret; + + ctrl->aux_clk = msm_clk_get(pdev, "core"); + if (IS_ERR(ctrl->aux_clk)) { + ret = PTR_ERR(ctrl->aux_clk); + pr_err("%s: Can't find core clock, %d\n", __func__, ret); + ctrl->aux_clk = NULL; + return ret; + } + + ctrl->pixel_clk = msm_clk_get(pdev, "pixel"); + if (IS_ERR(ctrl->pixel_clk)) { + ret = PTR_ERR(ctrl->pixel_clk); + pr_err("%s: Can't find pixel clock, %d\n", __func__, ret); + ctrl->pixel_clk = NULL; + return ret; + } + + ctrl->ahb_clk = msm_clk_get(pdev, "iface"); + if (IS_ERR(ctrl->ahb_clk)) { + ret = PTR_ERR(ctrl->ahb_clk); + pr_err("%s: Can't find iface clock, %d\n", __func__, ret); + ctrl->ahb_clk = NULL; + return ret; + } + + ctrl->link_clk = msm_clk_get(pdev, "link"); + if (IS_ERR(ctrl->link_clk)) { + ret = PTR_ERR(ctrl->link_clk); + pr_err("%s: Can't find link clock, %d\n", __func__, ret); + ctrl->link_clk = NULL; + return ret; + } + + /* need mdp core clock to receive irq */ + ctrl->mdp_core_clk = msm_clk_get(pdev, "mdp_core"); + if (IS_ERR(ctrl->mdp_core_clk)) { + ret = PTR_ERR(ctrl->mdp_core_clk); + pr_err("%s: Can't find mdp_core clock, %d\n", __func__, ret); + ctrl->mdp_core_clk = NULL; + return ret; + } + + return 0; +} + +static int edp_clk_enable(struct edp_ctrl *ctrl, u32 clk_mask) +{ + int ret; + + DBG("mask=%x", clk_mask); + /* ahb_clk should be enabled first */ + if (clk_mask & EDP_CLK_MASK_AHB) { + ret = clk_prepare_enable(ctrl->ahb_clk); + if (ret) { + pr_err("%s: Failed to enable ahb clk\n", __func__); + goto f0; + } + } + if (clk_mask & EDP_CLK_MASK_AUX) { + ret = clk_set_rate(ctrl->aux_clk, 19200000); + if (ret) { + pr_err("%s: Failed to set rate aux clk\n", __func__); + goto f1; + } + ret = clk_prepare_enable(ctrl->aux_clk); + if (ret) { + pr_err("%s: Failed to enable aux clk\n", __func__); + goto f1; + } + } + /* Need to set rate and enable link_clk prior to pixel_clk */ + if (clk_mask & EDP_CLK_MASK_LINK) { + DBG("edp->link_clk, set_rate %ld", + (unsigned long)ctrl->link_rate * 27000000); + ret = clk_set_rate(ctrl->link_clk, + (unsigned long)ctrl->link_rate * 27000000); + if (ret) { + pr_err("%s: Failed to set rate to link clk\n", + __func__); + goto f2; + } + + ret = clk_prepare_enable(ctrl->link_clk); + if (ret) { + pr_err("%s: Failed to enable link clk\n", __func__); + goto f2; + } + } + if (clk_mask & EDP_CLK_MASK_PIXEL) { + DBG("edp->pixel_clk, set_rate %ld", + (unsigned long)ctrl->pixel_rate * 1000); + ret = clk_set_rate(ctrl->pixel_clk, + (unsigned long)ctrl->pixel_rate * 1000); + if (ret) { + pr_err("%s: Failed to set rate to pixel clk\n", + __func__); + goto f3; + } + + ret = clk_prepare_enable(ctrl->pixel_clk); + if (ret) { + pr_err("%s: Failed to enable pixel clk\n", __func__); + goto f3; + } + } + if (clk_mask & EDP_CLK_MASK_MDP_CORE) { + ret = clk_prepare_enable(ctrl->mdp_core_clk); + if (ret) { + pr_err("%s: Failed to enable mdp core clk\n", __func__); + goto f4; + } + } + + return 0; + +f4: + if (clk_mask & EDP_CLK_MASK_PIXEL) + clk_disable_unprepare(ctrl->pixel_clk); +f3: + if (clk_mask & EDP_CLK_MASK_LINK) + clk_disable_unprepare(ctrl->link_clk); +f2: + if (clk_mask & EDP_CLK_MASK_AUX) + clk_disable_unprepare(ctrl->aux_clk); +f1: + if (clk_mask & EDP_CLK_MASK_AHB) + clk_disable_unprepare(ctrl->ahb_clk); +f0: + return ret; +} + +static void edp_clk_disable(struct edp_ctrl *ctrl, u32 clk_mask) +{ + if (clk_mask & EDP_CLK_MASK_MDP_CORE) + clk_disable_unprepare(ctrl->mdp_core_clk); + if (clk_mask & EDP_CLK_MASK_PIXEL) + clk_disable_unprepare(ctrl->pixel_clk); + if (clk_mask & EDP_CLK_MASK_LINK) + clk_disable_unprepare(ctrl->link_clk); + if (clk_mask & EDP_CLK_MASK_AUX) + clk_disable_unprepare(ctrl->aux_clk); + if (clk_mask & EDP_CLK_MASK_AHB) + clk_disable_unprepare(ctrl->ahb_clk); +} + +static int edp_regulator_init(struct edp_ctrl *ctrl) +{ + struct device *dev = &ctrl->pdev->dev; + int ret; + + DBG(""); + ctrl->vdda_vreg = devm_regulator_get(dev, "vdda"); + ret = PTR_ERR_OR_ZERO(ctrl->vdda_vreg); + if (ret) { + pr_err("%s: Could not get vdda reg, ret = %d\n", __func__, + ret); + ctrl->vdda_vreg = NULL; + return ret; + } + ctrl->lvl_vreg = devm_regulator_get(dev, "lvl-vdd"); + ret = PTR_ERR_OR_ZERO(ctrl->lvl_vreg); + if (ret) { + pr_err("%s: Could not get lvl-vdd reg, ret = %d\n", __func__, + ret); + ctrl->lvl_vreg = NULL; + return ret; + } + + return 0; +} + +static int edp_regulator_enable(struct edp_ctrl *ctrl) +{ + int ret; + + ret = regulator_set_load(ctrl->vdda_vreg, VDDA_UA_ON_LOAD); + if (ret < 0) { + pr_err("%s: vdda_vreg set regulator mode failed.\n", __func__); + goto vdda_set_fail; + } + + ret = regulator_enable(ctrl->vdda_vreg); + if (ret) { + pr_err("%s: Failed to enable vdda_vreg regulator.\n", __func__); + goto vdda_enable_fail; + } + + ret = regulator_enable(ctrl->lvl_vreg); + if (ret) { + pr_err("Failed to enable lvl-vdd reg regulator, %d", ret); + goto lvl_enable_fail; + } + + DBG("exit"); + return 0; + +lvl_enable_fail: + regulator_disable(ctrl->vdda_vreg); +vdda_enable_fail: + regulator_set_load(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD); +vdda_set_fail: + return ret; +} + +static void edp_regulator_disable(struct edp_ctrl *ctrl) +{ + regulator_disable(ctrl->lvl_vreg); + regulator_disable(ctrl->vdda_vreg); + regulator_set_load(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD); +} + +static int edp_gpio_config(struct edp_ctrl *ctrl) +{ + struct device *dev = &ctrl->pdev->dev; + int ret; + + ctrl->panel_hpd_gpio = devm_gpiod_get(dev, "panel-hpd", GPIOD_IN); + if (IS_ERR(ctrl->panel_hpd_gpio)) { + ret = PTR_ERR(ctrl->panel_hpd_gpio); + ctrl->panel_hpd_gpio = NULL; + pr_err("%s: cannot get panel-hpd-gpios, %d\n", __func__, ret); + return ret; + } + + ctrl->panel_en_gpio = devm_gpiod_get(dev, "panel-en", GPIOD_OUT_LOW); + if (IS_ERR(ctrl->panel_en_gpio)) { + ret = PTR_ERR(ctrl->panel_en_gpio); + ctrl->panel_en_gpio = NULL; + pr_err("%s: cannot get panel-en-gpios, %d\n", __func__, ret); + return ret; + } + + DBG("gpio on"); + + return 0; +} + +static void edp_ctrl_irq_enable(struct edp_ctrl *ctrl, int enable) +{ + unsigned long flags; + + DBG("%d", enable); + spin_lock_irqsave(&ctrl->irq_lock, flags); + if (enable) { + edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_1, EDP_INTR_MASK1); + edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_2, EDP_INTR_MASK2); + } else { + edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_1, 0x0); + edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_2, 0x0); + } + spin_unlock_irqrestore(&ctrl->irq_lock, flags); + DBG("exit"); +} + +static void edp_fill_link_cfg(struct edp_ctrl *ctrl) +{ + u32 prate; + u32 lrate; + u32 bpp; + u8 max_lane = drm_dp_max_lane_count(ctrl->dpcd); + u8 lane; + + prate = ctrl->pixel_rate; + bpp = ctrl->color_depth * 3; + + /* + * By default, use the maximum link rate and minimum lane count, + * so that we can do rate down shift during link training. + */ + ctrl->link_rate = ctrl->dpcd[DP_MAX_LINK_RATE]; + + prate *= bpp; + prate /= 8; /* in kByte */ + + lrate = 270000; /* in kHz */ + lrate *= ctrl->link_rate; + lrate /= 10; /* in kByte, 10 bits --> 8 bits */ + + for (lane = 1; lane <= max_lane; lane <<= 1) { + if (lrate >= prate) + break; + lrate <<= 1; + } + + ctrl->lane_cnt = lane; + DBG("rate=%d lane=%d", ctrl->link_rate, ctrl->lane_cnt); +} + +static void edp_config_ctrl(struct edp_ctrl *ctrl) +{ + u32 data; + enum edp_color_depth depth; + + data = EDP_CONFIGURATION_CTRL_LANES(ctrl->lane_cnt - 1); + + if (drm_dp_enhanced_frame_cap(ctrl->dpcd)) + data |= EDP_CONFIGURATION_CTRL_ENHANCED_FRAMING; + + depth = EDP_6BIT; + if (ctrl->color_depth == 8) + depth = EDP_8BIT; + + data |= EDP_CONFIGURATION_CTRL_COLOR(depth); + + if (!ctrl->interlaced) /* progressive */ + data |= EDP_CONFIGURATION_CTRL_PROGRESSIVE; + + data |= (EDP_CONFIGURATION_CTRL_SYNC_CLK | + EDP_CONFIGURATION_CTRL_STATIC_MVID); + + edp_write(ctrl->base + REG_EDP_CONFIGURATION_CTRL, data); +} + +static void edp_state_ctrl(struct edp_ctrl *ctrl, u32 state) +{ + edp_write(ctrl->base + REG_EDP_STATE_CTRL, state); + /* Make sure H/W status is set */ + wmb(); +} + +static int edp_lane_set_write(struct edp_ctrl *ctrl, + u8 voltage_level, u8 pre_emphasis_level) +{ + int i; + u8 buf[4]; + + if (voltage_level >= DPCD_LINK_VOLTAGE_MAX) + voltage_level |= 0x04; + + if (pre_emphasis_level >= DPCD_LINK_PRE_EMPHASIS_MAX) + pre_emphasis_level |= 0x04; + + pre_emphasis_level <<= 3; + + for (i = 0; i < 4; i++) + buf[i] = voltage_level | pre_emphasis_level; + + DBG("%s: p|v=0x%x", __func__, voltage_level | pre_emphasis_level); + if (drm_dp_dpcd_write(ctrl->drm_aux, 0x103, buf, 4) < 4) { + pr_err("%s: Set sw/pe to panel failed\n", __func__); + return -ENOLINK; + } + + return 0; +} + +static int edp_train_pattern_set_write(struct edp_ctrl *ctrl, u8 pattern) +{ + u8 p = pattern; + + DBG("pattern=%x", p); + if (drm_dp_dpcd_write(ctrl->drm_aux, + DP_TRAINING_PATTERN_SET, &p, 1) < 1) { + pr_err("%s: Set training pattern to panel failed\n", __func__); + return -ENOLINK; + } + + return 0; +} + +static void edp_sink_train_set_adjust(struct edp_ctrl *ctrl, + const u8 *link_status) +{ + int i; + u8 max = 0; + u8 data; + + /* use the max level across lanes */ + for (i = 0; i < ctrl->lane_cnt; i++) { + data = drm_dp_get_adjust_request_voltage(link_status, i); + DBG("lane=%d req_voltage_swing=0x%x", i, data); + if (max < data) + max = data; + } + + ctrl->v_level = max >> DP_TRAIN_VOLTAGE_SWING_SHIFT; + + /* use the max level across lanes */ + max = 0; + for (i = 0; i < ctrl->lane_cnt; i++) { + data = drm_dp_get_adjust_request_pre_emphasis(link_status, i); + DBG("lane=%d req_pre_emphasis=0x%x", i, data); + if (max < data) + max = data; + } + + ctrl->p_level = max >> DP_TRAIN_PRE_EMPHASIS_SHIFT; + DBG("v_level=%d, p_level=%d", ctrl->v_level, ctrl->p_level); +} + +static void edp_host_train_set(struct edp_ctrl *ctrl, u32 train) +{ + int cnt = 10; + u32 data; + u32 shift = train - 1; + + DBG("train=%d", train); + + edp_state_ctrl(ctrl, EDP_STATE_CTRL_TRAIN_PATTERN_1 << shift); + while (--cnt) { + data = edp_read(ctrl->base + REG_EDP_MAINLINK_READY); + if (data & (EDP_MAINLINK_READY_TRAIN_PATTERN_1_READY << shift)) + break; + } + + if (cnt == 0) + pr_err("%s: set link_train=%d failed\n", __func__, train); +} + +static const u8 vm_pre_emphasis[4][4] = { + {0x03, 0x06, 0x09, 0x0C}, /* pe0, 0 db */ + {0x03, 0x06, 0x09, 0xFF}, /* pe1, 3.5 db */ + {0x03, 0x06, 0xFF, 0xFF}, /* pe2, 6.0 db */ + {0x03, 0xFF, 0xFF, 0xFF} /* pe3, 9.5 db */ +}; + +/* voltage swing, 0.2v and 1.0v are not support */ +static const u8 vm_voltage_swing[4][4] = { + {0x14, 0x18, 0x1A, 0x1E}, /* sw0, 0.4v */ + {0x18, 0x1A, 0x1E, 0xFF}, /* sw1, 0.6 v */ + {0x1A, 0x1E, 0xFF, 0xFF}, /* sw1, 0.8 v */ + {0x1E, 0xFF, 0xFF, 0xFF} /* sw1, 1.2 v, optional */ +}; + +static int edp_voltage_pre_emphasise_set(struct edp_ctrl *ctrl) +{ + u32 value0; + u32 value1; + + DBG("v=%d p=%d", ctrl->v_level, ctrl->p_level); + + value0 = vm_pre_emphasis[(int)(ctrl->v_level)][(int)(ctrl->p_level)]; + value1 = vm_voltage_swing[(int)(ctrl->v_level)][(int)(ctrl->p_level)]; + + /* Configure host and panel only if both values are allowed */ + if (value0 != 0xFF && value1 != 0xFF) { + msm_edp_phy_vm_pe_cfg(ctrl->phy, value0, value1); + return edp_lane_set_write(ctrl, ctrl->v_level, ctrl->p_level); + } + + return -EINVAL; +} + +static int edp_start_link_train_1(struct edp_ctrl *ctrl) +{ + u8 link_status[DP_LINK_STATUS_SIZE]; + u8 old_v_level; + int tries; + int ret; + int rlen; + + DBG(""); + + edp_host_train_set(ctrl, DP_TRAINING_PATTERN_1); + ret = edp_voltage_pre_emphasise_set(ctrl); + if (ret) + return ret; + ret = edp_train_pattern_set_write(ctrl, + DP_TRAINING_PATTERN_1 | DP_RECOVERED_CLOCK_OUT_EN); + if (ret) + return ret; + + tries = 0; + old_v_level = ctrl->v_level; + while (1) { + drm_dp_link_train_clock_recovery_delay(ctrl->dpcd); + + rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status); + if (rlen < DP_LINK_STATUS_SIZE) { + pr_err("%s: read link status failed\n", __func__); + return -ENOLINK; + } + if (drm_dp_clock_recovery_ok(link_status, ctrl->lane_cnt)) { + ret = 0; + break; + } + + if (ctrl->v_level == DPCD_LINK_VOLTAGE_MAX) { + ret = -1; + break; + } + + if (old_v_level == ctrl->v_level) { + tries++; + if (tries >= 5) { + ret = -1; + break; + } + } else { + tries = 0; + old_v_level = ctrl->v_level; + } + + edp_sink_train_set_adjust(ctrl, link_status); + ret = edp_voltage_pre_emphasise_set(ctrl); + if (ret) + return ret; + } + + return ret; +} + +static int edp_start_link_train_2(struct edp_ctrl *ctrl) +{ + u8 link_status[DP_LINK_STATUS_SIZE]; + int tries = 0; + int ret; + int rlen; + + DBG(""); + + edp_host_train_set(ctrl, DP_TRAINING_PATTERN_2); + ret = edp_voltage_pre_emphasise_set(ctrl); + if (ret) + return ret; + + ret = edp_train_pattern_set_write(ctrl, + DP_TRAINING_PATTERN_2 | DP_RECOVERED_CLOCK_OUT_EN); + if (ret) + return ret; + + while (1) { + drm_dp_link_train_channel_eq_delay(ctrl->dpcd); + + rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status); + if (rlen < DP_LINK_STATUS_SIZE) { + pr_err("%s: read link status failed\n", __func__); + return -ENOLINK; + } + if (drm_dp_channel_eq_ok(link_status, ctrl->lane_cnt)) { + ret = 0; + break; + } + + tries++; + if (tries > 10) { + ret = -1; + break; + } + + edp_sink_train_set_adjust(ctrl, link_status); + ret = edp_voltage_pre_emphasise_set(ctrl); + if (ret) + return ret; + } + + return ret; +} + +static int edp_link_rate_down_shift(struct edp_ctrl *ctrl) +{ + u32 prate, lrate, bpp; + u8 rate, lane, max_lane; + int changed = 0; + + rate = ctrl->link_rate; + lane = ctrl->lane_cnt; + max_lane = drm_dp_max_lane_count(ctrl->dpcd); + + bpp = ctrl->color_depth * 3; + prate = ctrl->pixel_rate; + prate *= bpp; + prate /= 8; /* in kByte */ + + if (rate > DP_LINK_BW_1_62 && rate <= EDP_LINK_BW_MAX) { + rate -= 4; /* reduce rate */ + changed++; + } + + if (changed) { + if (lane >= 1 && lane < max_lane) + lane <<= 1; /* increase lane */ + + lrate = 270000; /* in kHz */ + lrate *= rate; + lrate /= 10; /* kByte, 10 bits --> 8 bits */ + lrate *= lane; + + DBG("new lrate=%u prate=%u(kHz) rate=%d lane=%d p=%u b=%d", + lrate, prate, rate, lane, + ctrl->pixel_rate, + bpp); + + if (lrate > prate) { + ctrl->link_rate = rate; + ctrl->lane_cnt = lane; + DBG("new rate=%d %d", rate, lane); + return 0; + } + } + + return -EINVAL; +} + +static int edp_clear_training_pattern(struct edp_ctrl *ctrl) +{ + int ret; + + ret = edp_train_pattern_set_write(ctrl, 0); + + drm_dp_link_train_channel_eq_delay(ctrl->dpcd); + + return ret; +} + +static int edp_do_link_train(struct edp_ctrl *ctrl) +{ + u8 values[2]; + int ret; + + DBG(""); + /* + * Set the current link rate and lane cnt to panel. They may have been + * adjusted and the values are different from them in DPCD CAP + */ + values[0] = ctrl->lane_cnt; + values[1] = ctrl->link_rate; + + if (drm_dp_enhanced_frame_cap(ctrl->dpcd)) + values[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; + + if (drm_dp_dpcd_write(ctrl->drm_aux, DP_LINK_BW_SET, values, + sizeof(values)) < 0) + return EDP_TRAIN_FAIL; + + ctrl->v_level = 0; /* start from default level */ + ctrl->p_level = 0; + + edp_state_ctrl(ctrl, 0); + if (edp_clear_training_pattern(ctrl)) + return EDP_TRAIN_FAIL; + + ret = edp_start_link_train_1(ctrl); + if (ret < 0) { + if (edp_link_rate_down_shift(ctrl) == 0) { + DBG("link reconfig"); + ret = EDP_TRAIN_RECONFIG; + goto clear; + } else { + pr_err("%s: Training 1 failed", __func__); + ret = EDP_TRAIN_FAIL; + goto clear; + } + } + DBG("Training 1 completed successfully"); + + edp_state_ctrl(ctrl, 0); + if (edp_clear_training_pattern(ctrl)) + return EDP_TRAIN_FAIL; + + ret = edp_start_link_train_2(ctrl); + if (ret < 0) { + if (edp_link_rate_down_shift(ctrl) == 0) { + DBG("link reconfig"); + ret = EDP_TRAIN_RECONFIG; + goto clear; + } else { + pr_err("%s: Training 2 failed", __func__); + ret = EDP_TRAIN_FAIL; + goto clear; + } + } + DBG("Training 2 completed successfully"); + + edp_state_ctrl(ctrl, EDP_STATE_CTRL_SEND_VIDEO); +clear: + edp_clear_training_pattern(ctrl); + + return ret; +} + +static void edp_clock_synchrous(struct edp_ctrl *ctrl, int sync) +{ + u32 data; + enum edp_color_depth depth; + + data = edp_read(ctrl->base + REG_EDP_MISC1_MISC0); + + if (sync) + data |= EDP_MISC1_MISC0_SYNC; + else + data &= ~EDP_MISC1_MISC0_SYNC; + + /* only legacy rgb mode supported */ + depth = EDP_6BIT; /* Default */ + if (ctrl->color_depth == 8) + depth = EDP_8BIT; + else if (ctrl->color_depth == 10) + depth = EDP_10BIT; + else if (ctrl->color_depth == 12) + depth = EDP_12BIT; + else if (ctrl->color_depth == 16) + depth = EDP_16BIT; + + data |= EDP_MISC1_MISC0_COLOR(depth); + + edp_write(ctrl->base + REG_EDP_MISC1_MISC0, data); +} + +static int edp_sw_mvid_nvid(struct edp_ctrl *ctrl, u32 m, u32 n) +{ + u32 n_multi, m_multi = 5; + + if (ctrl->link_rate == DP_LINK_BW_1_62) { + n_multi = 1; + } else if (ctrl->link_rate == DP_LINK_BW_2_7) { + n_multi = 2; + } else { + pr_err("%s: Invalid link rate, %d\n", __func__, + ctrl->link_rate); + return -EINVAL; + } + + edp_write(ctrl->base + REG_EDP_SOFTWARE_MVID, m * m_multi); + edp_write(ctrl->base + REG_EDP_SOFTWARE_NVID, n * n_multi); + + return 0; +} + +static void edp_mainlink_ctrl(struct edp_ctrl *ctrl, int enable) +{ + u32 data = 0; + + edp_write(ctrl->base + REG_EDP_MAINLINK_CTRL, EDP_MAINLINK_CTRL_RESET); + /* Make sure fully reset */ + wmb(); + usleep_range(500, 1000); + + if (enable) + data |= EDP_MAINLINK_CTRL_ENABLE; + + edp_write(ctrl->base + REG_EDP_MAINLINK_CTRL, data); +} + +static void edp_ctrl_phy_aux_enable(struct edp_ctrl *ctrl, int enable) +{ + if (enable) { + edp_regulator_enable(ctrl); + edp_clk_enable(ctrl, EDP_CLK_MASK_AUX_CHAN); + msm_edp_phy_ctrl(ctrl->phy, 1); + msm_edp_aux_ctrl(ctrl->aux, 1); + gpiod_set_value(ctrl->panel_en_gpio, 1); + } else { + gpiod_set_value(ctrl->panel_en_gpio, 0); + msm_edp_aux_ctrl(ctrl->aux, 0); + msm_edp_phy_ctrl(ctrl->phy, 0); + edp_clk_disable(ctrl, EDP_CLK_MASK_AUX_CHAN); + edp_regulator_disable(ctrl); + } +} + +static void edp_ctrl_link_enable(struct edp_ctrl *ctrl, int enable) +{ + u32 m, n; + + if (enable) { + /* Enable link channel clocks */ + edp_clk_enable(ctrl, EDP_CLK_MASK_LINK_CHAN); + + msm_edp_phy_lane_power_ctrl(ctrl->phy, true, ctrl->lane_cnt); + + msm_edp_phy_vm_pe_init(ctrl->phy); + + /* Make sure phy is programed */ + wmb(); + msm_edp_phy_ready(ctrl->phy); + + edp_config_ctrl(ctrl); + msm_edp_ctrl_pixel_clock_valid(ctrl, ctrl->pixel_rate, &m, &n); + edp_sw_mvid_nvid(ctrl, m, n); + edp_mainlink_ctrl(ctrl, 1); + } else { + edp_mainlink_ctrl(ctrl, 0); + + msm_edp_phy_lane_power_ctrl(ctrl->phy, false, 0); + edp_clk_disable(ctrl, EDP_CLK_MASK_LINK_CHAN); + } +} + +static int edp_ctrl_training(struct edp_ctrl *ctrl) +{ + int ret; + + /* Do link training only when power is on */ + if (!ctrl->power_on) + return -EINVAL; + +train_start: + ret = edp_do_link_train(ctrl); + if (ret == EDP_TRAIN_RECONFIG) { + /* Re-configure main link */ + edp_ctrl_irq_enable(ctrl, 0); + edp_ctrl_link_enable(ctrl, 0); + msm_edp_phy_ctrl(ctrl->phy, 0); + + /* Make sure link is fully disabled */ + wmb(); + usleep_range(500, 1000); + + msm_edp_phy_ctrl(ctrl->phy, 1); + edp_ctrl_link_enable(ctrl, 1); + edp_ctrl_irq_enable(ctrl, 1); + goto train_start; + } + + return ret; +} + +static void edp_ctrl_on_worker(struct work_struct *work) +{ + struct edp_ctrl *ctrl = container_of( + work, struct edp_ctrl, on_work); + u8 value; + int ret; + + mutex_lock(&ctrl->dev_mutex); + + if (ctrl->power_on) { + DBG("already on"); + goto unlock_ret; + } + + edp_ctrl_phy_aux_enable(ctrl, 1); + edp_ctrl_link_enable(ctrl, 1); + + edp_ctrl_irq_enable(ctrl, 1); + + /* DP_SET_POWER register is only available on DPCD v1.1 and later */ + if (ctrl->dpcd[DP_DPCD_REV] >= 0x11) { + ret = drm_dp_dpcd_readb(ctrl->drm_aux, DP_SET_POWER, &value); + if (ret < 0) + goto fail; + + value &= ~DP_SET_POWER_MASK; + value |= DP_SET_POWER_D0; + + ret = drm_dp_dpcd_writeb(ctrl->drm_aux, DP_SET_POWER, value); + if (ret < 0) + goto fail; + + /* + * According to the DP 1.1 specification, a "Sink Device must + * exit the power saving state within 1 ms" (Section 2.5.3.1, + * Table 5-52, "Sink Control Field" (register 0x600). + */ + usleep_range(1000, 2000); + } + + ctrl->power_on = true; + + /* Start link training */ + ret = edp_ctrl_training(ctrl); + if (ret != EDP_TRAIN_SUCCESS) + goto fail; + + DBG("DONE"); + goto unlock_ret; + +fail: + edp_ctrl_irq_enable(ctrl, 0); + edp_ctrl_link_enable(ctrl, 0); + edp_ctrl_phy_aux_enable(ctrl, 0); + ctrl->power_on = false; +unlock_ret: + mutex_unlock(&ctrl->dev_mutex); +} + +static void edp_ctrl_off_worker(struct work_struct *work) +{ + struct edp_ctrl *ctrl = container_of( + work, struct edp_ctrl, off_work); + unsigned long time_left; + + mutex_lock(&ctrl->dev_mutex); + + if (!ctrl->power_on) { + DBG("already off"); + goto unlock_ret; + } + + reinit_completion(&ctrl->idle_comp); + edp_state_ctrl(ctrl, EDP_STATE_CTRL_PUSH_IDLE); + + time_left = wait_for_completion_timeout(&ctrl->idle_comp, + msecs_to_jiffies(500)); + if (!time_left) + DBG("%s: idle pattern timedout\n", __func__); + + edp_state_ctrl(ctrl, 0); + + /* DP_SET_POWER register is only available on DPCD v1.1 and later */ + if (ctrl->dpcd[DP_DPCD_REV] >= 0x11) { + u8 value; + int ret; + + ret = drm_dp_dpcd_readb(ctrl->drm_aux, DP_SET_POWER, &value); + if (ret > 0) { + value &= ~DP_SET_POWER_MASK; + value |= DP_SET_POWER_D3; + + drm_dp_dpcd_writeb(ctrl->drm_aux, DP_SET_POWER, value); + } + } + + edp_ctrl_irq_enable(ctrl, 0); + + edp_ctrl_link_enable(ctrl, 0); + + edp_ctrl_phy_aux_enable(ctrl, 0); + + ctrl->power_on = false; + +unlock_ret: + mutex_unlock(&ctrl->dev_mutex); +} + +irqreturn_t msm_edp_ctrl_irq(struct edp_ctrl *ctrl) +{ + u32 isr1, isr2, mask1, mask2; + u32 ack; + + DBG(""); + spin_lock(&ctrl->irq_lock); + isr1 = edp_read(ctrl->base + REG_EDP_INTERRUPT_REG_1); + isr2 = edp_read(ctrl->base + REG_EDP_INTERRUPT_REG_2); + + mask1 = isr1 & EDP_INTR_MASK1; + mask2 = isr2 & EDP_INTR_MASK2; + + isr1 &= ~mask1; /* remove masks bit */ + isr2 &= ~mask2; + + DBG("isr=%x mask=%x isr2=%x mask2=%x", + isr1, mask1, isr2, mask2); + + ack = isr1 & EDP_INTR_STATUS1; + ack <<= 1; /* ack bits */ + ack |= mask1; + edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_1, ack); + + ack = isr2 & EDP_INTR_STATUS2; + ack <<= 1; /* ack bits */ + ack |= mask2; + edp_write(ctrl->base + REG_EDP_INTERRUPT_REG_2, ack); + spin_unlock(&ctrl->irq_lock); + + if (isr1 & EDP_INTERRUPT_REG_1_HPD) + DBG("edp_hpd"); + + if (isr2 & EDP_INTERRUPT_REG_2_READY_FOR_VIDEO) + DBG("edp_video_ready"); + + if (isr2 & EDP_INTERRUPT_REG_2_IDLE_PATTERNs_SENT) { + DBG("idle_patterns_sent"); + complete(&ctrl->idle_comp); + } + + msm_edp_aux_irq(ctrl->aux, isr1); + + return IRQ_HANDLED; +} + +void msm_edp_ctrl_power(struct edp_ctrl *ctrl, bool on) +{ + if (on) + queue_work(ctrl->workqueue, &ctrl->on_work); + else + queue_work(ctrl->workqueue, &ctrl->off_work); +} + +int msm_edp_ctrl_init(struct msm_edp_v200 *edp) +{ + struct edp_ctrl *ctrl = NULL; + struct device *dev = &edp->base.pdev->dev; + int ret; + + if (!edp) { + pr_err("%s: edp is NULL!\n", __func__); + return -EINVAL; + } + + ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); + if (!ctrl) + return -ENOMEM; + + edp->ctrl = ctrl; + ctrl->pdev = edp->base.pdev; + + ctrl->base = msm_ioremap(ctrl->pdev, "edp", "eDP"); + if (IS_ERR(ctrl->base)) + return PTR_ERR(ctrl->base); + + /* Get regulator, clock, gpio, pwm */ + ret = edp_regulator_init(ctrl); + if (ret) { + pr_err("%s:regulator init fail\n", __func__); + return ret; + } + ret = edp_clk_init(ctrl); + if (ret) { + pr_err("%s:clk init fail\n", __func__); + return ret; + } + ret = edp_gpio_config(ctrl); + if (ret) { + pr_err("%s:failed to configure GPIOs: %d", __func__, ret); + return ret; + } + + /* Init aux and phy */ + ctrl->aux = msm_edp_aux_init(dev, ctrl->base, &ctrl->drm_aux); + if (!ctrl->aux || !ctrl->drm_aux) { + pr_err("%s:failed to init aux\n", __func__); + return -ENOMEM; + } + + ctrl->phy = msm_edp_phy_init(dev, ctrl->base); + if (!ctrl->phy) { + pr_err("%s:failed to init phy\n", __func__); + ret = -ENOMEM; + goto err_destory_aux; + } + + spin_lock_init(&ctrl->irq_lock); + mutex_init(&ctrl->dev_mutex); + init_completion(&ctrl->idle_comp); + + /* setup workqueue */ + ctrl->workqueue = alloc_ordered_workqueue("edp_drm_work", 0); + INIT_WORK(&ctrl->on_work, edp_ctrl_on_worker); + INIT_WORK(&ctrl->off_work, edp_ctrl_off_worker); + + return 0; + +err_destory_aux: + msm_edp_aux_destroy(dev, ctrl->aux); + ctrl->aux = NULL; + return ret; +} + +void msm_edp_ctrl_destroy(struct edp_ctrl *ctrl) +{ + if (!ctrl) + return; + + if (ctrl->workqueue) { + flush_workqueue(ctrl->workqueue); + destroy_workqueue(ctrl->workqueue); + ctrl->workqueue = NULL; + } + + if (ctrl->aux) { + msm_edp_aux_destroy(&ctrl->pdev->dev, ctrl->aux); + ctrl->aux = NULL; + } + + kfree(ctrl->edid); + ctrl->edid = NULL; + + mutex_destroy(&ctrl->dev_mutex); +} + +bool msm_edp_ctrl_panel_connected(struct edp_ctrl *ctrl) +{ + mutex_lock(&ctrl->dev_mutex); + DBG("connect status = %d", ctrl->edp_connected); + if (ctrl->edp_connected) { + mutex_unlock(&ctrl->dev_mutex); + return true; + } + + if (!ctrl->power_on) { + edp_ctrl_phy_aux_enable(ctrl, 1); + edp_ctrl_irq_enable(ctrl, 1); + } + + if (drm_dp_dpcd_read(ctrl->drm_aux, DP_DPCD_REV, ctrl->dpcd, + DP_RECEIVER_CAP_SIZE) < DP_RECEIVER_CAP_SIZE) { + pr_err("%s: AUX channel is NOT ready\n", __func__); + memset(ctrl->dpcd, 0, DP_RECEIVER_CAP_SIZE); + } else { + ctrl->edp_connected = true; + } + + if (!ctrl->power_on) { + edp_ctrl_irq_enable(ctrl, 0); + edp_ctrl_phy_aux_enable(ctrl, 0); + } + + DBG("exit: connect status=%d", ctrl->edp_connected); + + mutex_unlock(&ctrl->dev_mutex); + + return ctrl->edp_connected; +} + +int msm_edp_ctrl_get_panel_info(struct edp_ctrl *ctrl, + struct drm_connector *connector, struct edid **edid) +{ + int ret = 0; + + mutex_lock(&ctrl->dev_mutex); + + if (ctrl->edid) { + if (edid) { + DBG("Just return edid buffer"); + *edid = ctrl->edid; + } + goto unlock_ret; + } + + if (!ctrl->power_on) { + edp_ctrl_phy_aux_enable(ctrl, 1); + edp_ctrl_irq_enable(ctrl, 1); + } + + /* Initialize link rate as panel max link rate */ + ctrl->link_rate = ctrl->dpcd[DP_MAX_LINK_RATE]; + + ctrl->edid = drm_get_edid(connector, &ctrl->drm_aux->ddc); + if (!ctrl->edid) { + pr_err("%s: edid read fail\n", __func__); + goto disable_ret; + } + + if (edid) + *edid = ctrl->edid; + +disable_ret: + if (!ctrl->power_on) { + edp_ctrl_irq_enable(ctrl, 0); + edp_ctrl_phy_aux_enable(ctrl, 0); + } +unlock_ret: + mutex_unlock(&ctrl->dev_mutex); + return ret; +} + +int msm_edp_ctrl_timing_cfg(struct edp_ctrl *ctrl, + const struct drm_display_mode *mode, + const struct drm_display_info *info) +{ + u32 hstart_from_sync, vstart_from_sync; + u32 data; + int ret = 0; + + mutex_lock(&ctrl->dev_mutex); + /* + * Need to keep color depth, pixel rate and + * interlaced information in ctrl context + */ + ctrl->color_depth = info->bpc; + ctrl->pixel_rate = mode->clock; + ctrl->interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); + + /* Fill initial link config based on passed in timing */ + edp_fill_link_cfg(ctrl); + + if (edp_clk_enable(ctrl, EDP_CLK_MASK_AHB)) { + pr_err("%s, fail to prepare enable ahb clk\n", __func__); + ret = -EINVAL; + goto unlock_ret; + } + edp_clock_synchrous(ctrl, 1); + + /* Configure eDP timing to HW */ + edp_write(ctrl->base + REG_EDP_TOTAL_HOR_VER, + EDP_TOTAL_HOR_VER_HORIZ(mode->htotal) | + EDP_TOTAL_HOR_VER_VERT(mode->vtotal)); + + vstart_from_sync = mode->vtotal - mode->vsync_start; + hstart_from_sync = mode->htotal - mode->hsync_start; + edp_write(ctrl->base + REG_EDP_START_HOR_VER_FROM_SYNC, + EDP_START_HOR_VER_FROM_SYNC_HORIZ(hstart_from_sync) | + EDP_START_HOR_VER_FROM_SYNC_VERT(vstart_from_sync)); + + data = EDP_HSYNC_VSYNC_WIDTH_POLARITY_VERT( + mode->vsync_end - mode->vsync_start); + data |= EDP_HSYNC_VSYNC_WIDTH_POLARITY_HORIZ( + mode->hsync_end - mode->hsync_start); + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + data |= EDP_HSYNC_VSYNC_WIDTH_POLARITY_NVSYNC; + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + data |= EDP_HSYNC_VSYNC_WIDTH_POLARITY_NHSYNC; + edp_write(ctrl->base + REG_EDP_HSYNC_VSYNC_WIDTH_POLARITY, data); + + edp_write(ctrl->base + REG_EDP_ACTIVE_HOR_VER, + EDP_ACTIVE_HOR_VER_HORIZ(mode->hdisplay) | + EDP_ACTIVE_HOR_VER_VERT(mode->vdisplay)); + + edp_clk_disable(ctrl, EDP_CLK_MASK_AHB); + +unlock_ret: + mutex_unlock(&ctrl->dev_mutex); + return ret; +} + +bool msm_edp_ctrl_pixel_clock_valid(struct edp_ctrl *ctrl, + u32 pixel_rate, u32 *pm, u32 *pn) +{ + const struct edp_pixel_clk_div *divs; + u32 err = 1; /* 1% error tolerance */ + u32 clk_err; + int i; + + if (ctrl->link_rate == DP_LINK_BW_1_62) { + divs = clk_divs[0]; + } else if (ctrl->link_rate == DP_LINK_BW_2_7) { + divs = clk_divs[1]; + } else { + pr_err("%s: Invalid link rate,%d\n", __func__, ctrl->link_rate); + return false; + } + + for (i = 0; i < EDP_PIXEL_CLK_NUM; i++) { + clk_err = abs(divs[i].rate - pixel_rate); + if ((divs[i].rate * err / 100) >= clk_err) { + if (pm) + *pm = divs[i].m; + if (pn) + *pn = divs[i].n; + return true; + } + } + + DBG("pixel clock %d(kHz) not supported", pixel_rate); + + return false; +} + diff --git a/drivers/gpu/drm/msm/edp/v200/edp_v200_phy.c b/drivers/gpu/drm/msm/edp/v200/edp_v200_phy.c new file mode 100644 index 0000000..f10cffc --- /dev/null +++ b/drivers/gpu/drm/msm/edp/v200/edp_v200_phy.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. + */ + +#include "edp_v200.h" +#include "edp.xml.h" + +#define EDP_MAX_LANE 4 + +struct edp_phy { + void __iomem *base; +}; + +bool msm_edp_phy_ready(struct edp_phy *phy) +{ + u32 status; + int cnt = 100; + + while (--cnt) { + status = edp_read(phy->base + + REG_EDP_PHY_GLB_PHY_STATUS); + if (status & 0x01) + break; + usleep_range(500, 1000); + } + + if (cnt == 0) { + pr_err("%s: PHY NOT ready\n", __func__); + return false; + } else { + return true; + } +} + +void msm_edp_phy_ctrl(struct edp_phy *phy, int enable) +{ + DBG("enable=%d", enable); + if (enable) { + /* Reset */ + edp_write(phy->base + REG_EDP_PHY_CTRL, + EDP_PHY_CTRL_SW_RESET | EDP_PHY_CTRL_SW_RESET_PLL); + /* Make sure fully reset */ + wmb(); + usleep_range(500, 1000); + edp_write(phy->base + REG_EDP_PHY_CTRL, 0x000); + edp_write(phy->base + REG_EDP_PHY_GLB_PD_CTL, 0x3f); + edp_write(phy->base + REG_EDP_PHY_GLB_CFG, 0x1); + } else { + edp_write(phy->base + REG_EDP_PHY_GLB_PD_CTL, 0xc0); + } +} + +/* voltage mode and pre emphasis cfg */ +void msm_edp_phy_vm_pe_init(struct edp_phy *phy) +{ + edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG0, 0x3); + edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG1, 0x64); + edp_write(phy->base + REG_EDP_PHY_GLB_MISC9, 0x6c); +} + +void msm_edp_phy_vm_pe_cfg(struct edp_phy *phy, u32 v0, u32 v1) +{ + edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG0, v0); + edp_write(phy->base + REG_EDP_PHY_GLB_VM_CFG1, v1); +} + +void msm_edp_phy_lane_power_ctrl(struct edp_phy *phy, bool up, u32 max_lane) +{ + u32 i; + u32 data; + + if (up) + data = 0; /* power up */ + else + data = 0x7; /* power down */ + + for (i = 0; i < max_lane; i++) + edp_write(phy->base + REG_EDP_PHY_LN_PD_CTL(i), data); + + /* power down unused lane */ + data = 0x7; /* power down */ + for (i = max_lane; i < EDP_MAX_LANE; i++) + edp_write(phy->base + REG_EDP_PHY_LN_PD_CTL(i), data); +} + +void *msm_edp_phy_init(struct device *dev, void __iomem *regbase) +{ + struct edp_phy *phy = NULL; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return NULL; + + phy->base = regbase; + return phy; +} +