[PATCH 3/5] drm/rockchip: Use the helpers for PSR

From: Sean Paul seanpaul@chromium.org

Instead of rolling our own implementation for tracking when PSR should be [in]active, use the PSR helpers to do the heavy lifting.

Cc: Zain Wang wzz@rock-chips.com Cc: Tomasz Figa tfiga@chromium.org Signed-off-by: Sean Paul seanpaul@chromium.org --- .../drm/bridge/analogix/analogix_dp_core.c | 205 ++++++++----- .../drm/bridge/analogix/analogix_dp_core.h | 1 - drivers/gpu/drm/rockchip/Makefile | 3 +- .../gpu/drm/rockchip/analogix_dp-rockchip.c | 70 ++--- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 12 +- drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 16 - drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 290 ------------------ drivers/gpu/drm/rockchip/rockchip_drm_psr.h | 30 -- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 21 +- include/drm/bridge/analogix_dp.h | 4 +- 10 files changed, 177 insertions(+), 475 deletions(-) delete mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_psr.c delete mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_psr.h

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index af34554a5a02..de98cb3570be 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -28,6 +28,7 @@ #include <drm/drm_crtc.h> #include <drm/drm_panel.h> #include <drm/drm_probe_helper.h> +#include <drm/drm_psr_helper.h>

#include <drm/bridge/analogix_dp.h>

@@ -106,63 +107,19 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) return 0; }

-int analogix_dp_psr_enabled(struct analogix_dp_device *dp) +bool analogix_dp_in_psr_transition(struct analogix_dp_device *dp) { + struct drm_mode_config *config = &dp->drm_dev->mode_config;

- return dp->psr_enable; -} -EXPORT_SYMBOL_GPL(analogix_dp_psr_enabled); + /* This should only be called from the encoder enable/disable */ + if (WARN_ON(!drm_modeset_is_locked(&config->connection_mutex))) + return false;

-int analogix_dp_enable_psr(struct analogix_dp_device *dp) -{ - struct edp_vsc_psr psr_vsc; - - if (!dp->psr_enable) - return 0; - - /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ - memset(&psr_vsc, 0, sizeof(psr_vsc)); - psr_vsc.sdp_header.HB0 = 0; - psr_vsc.sdp_header.HB1 = 0x7; - psr_vsc.sdp_header.HB2 = 0x2; - psr_vsc.sdp_header.HB3 = 0x8; - - psr_vsc.DB0 = 0; - psr_vsc.DB1 = EDP_VSC_PSR_STATE_ACTIVE | EDP_VSC_PSR_CRC_VALUES_VALID; - - return analogix_dp_send_psr_spd(dp, &psr_vsc, true); + return dp->connector.state->psr_transition; } -EXPORT_SYMBOL_GPL(analogix_dp_enable_psr); +EXPORT_SYMBOL_GPL(analogix_dp_in_psr_transition);

-int analogix_dp_disable_psr(struct analogix_dp_device *dp) -{ - struct edp_vsc_psr psr_vsc; - int ret; - - if (!dp->psr_enable) - return 0; - - /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ - memset(&psr_vsc, 0, sizeof(psr_vsc)); - psr_vsc.sdp_header.HB0 = 0; - psr_vsc.sdp_header.HB1 = 0x7; - psr_vsc.sdp_header.HB2 = 0x2; - psr_vsc.sdp_header.HB3 = 0x8; - - psr_vsc.DB0 = 0; - psr_vsc.DB1 = 0; - - ret = drm_dp_dpcd_writeb(&dp->aux, DP_SET_POWER, DP_SET_POWER_D0); - if (ret != 1) { - dev_err(dp->dev, "Failed to set DP Power0 %d\n", ret); - return ret; - } - - return analogix_dp_send_psr_spd(dp, &psr_vsc, false); -} -EXPORT_SYMBOL_GPL(analogix_dp_disable_psr); - -static int analogix_dp_detect_sink_psr(struct analogix_dp_device *dp) +static bool analogix_dp_detect_sink_psr(struct analogix_dp_device *dp) { unsigned char psr_version; int ret; @@ -170,14 +127,11 @@ static int analogix_dp_detect_sink_psr(struct analogix_dp_device *dp) ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_SUPPORT, &psr_version); if (ret != 1) { dev_err(dp->dev, "failed to get PSR version, disable it\n"); - return ret; + return false; }

dev_dbg(dp->dev, "Panel PSR version : %x\n", psr_version); - - dp->psr_enable = (psr_version & DP_PSR_IS_SUPPORTED) ? true : false; - - return 0; + return psr_version & DP_PSR_IS_SUPPORTED; }

static int analogix_dp_enable_sink_psr(struct analogix_dp_device *dp) @@ -200,7 +154,7 @@ static int analogix_dp_enable_sink_psr(struct analogix_dp_device *dp) }

/* Main-Link transmitter remains active during PSR active states */ - psr_en = DP_PSR_MAIN_LINK_ACTIVE | DP_PSR_CRC_VERIFICATION; + psr_en = DP_PSR_CRC_VERIFICATION; ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en); if (ret != 1) { dev_err(dp->dev, "failed to set panel psr\n"); @@ -208,8 +162,7 @@ static int analogix_dp_enable_sink_psr(struct analogix_dp_device *dp) }

/* Enable psr function */ - psr_en = DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE | - DP_PSR_CRC_VERIFICATION; + psr_en = DP_PSR_ENABLE | DP_PSR_CRC_VERIFICATION; ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en); if (ret != 1) { dev_err(dp->dev, "failed to set panel psr\n"); @@ -221,7 +174,6 @@ static int analogix_dp_enable_sink_psr(struct analogix_dp_device *dp) return 0; end: dev_err(dp->dev, "enable psr fail, force to disable psr\n"); - dp->psr_enable = false;

return ret; } @@ -1036,25 +988,94 @@ static int analogix_dp_commit(struct analogix_dp_device *dp) } }

- ret = analogix_dp_detect_sink_psr(dp); - if (ret) - return ret; - /* Check whether panel supports fast training */ ret = analogix_dp_fast_link_train_detection(dp); if (ret) - dp->psr_enable = false; + return ret;

- if (dp->psr_enable) { + if (analogix_dp_detect_sink_psr(dp)) { ret = analogix_dp_enable_sink_psr(dp); if (ret) return ret; + + ret = drm_psr_helper_register(&dp->connector); + if (ret) + return ret; }

+ return ret; +} + +static int analogix_dp_enable_psr(struct analogix_dp_device *dp) +{ + struct edp_vsc_psr psr_vsc; + int ret; + u8 sink; + + ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_STATUS, &sink); + if (ret != 1) + DRM_DEV_ERROR(dp->dev, "Failed to read psr status %d\n", ret); + else if (sink == DP_PSR_SINK_ACTIVE_RFB) + return 0; + + /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ + memset(&psr_vsc, 0, sizeof(psr_vsc)); + psr_vsc.sdp_header.HB0 = 0; + psr_vsc.sdp_header.HB1 = 0x7; + psr_vsc.sdp_header.HB2 = 0x2; + psr_vsc.sdp_header.HB3 = 0x8; + psr_vsc.DB0 = 0; + psr_vsc.DB1 = EDP_VSC_PSR_STATE_ACTIVE | EDP_VSC_PSR_CRC_VALUES_VALID; + + ret = analogix_dp_send_psr_spd(dp, &psr_vsc, true); + if (!ret) + analogix_dp_set_analog_power_down(dp, POWER_ALL, true);

return ret; }

+static int analogix_dp_disable_psr(struct analogix_dp_device *dp) +{ + struct edp_vsc_psr psr_vsc; + int ret; + u8 sink; + + analogix_dp_set_analog_power_down(dp, POWER_ALL, false); + + ret = drm_dp_dpcd_writeb(&dp->aux, DP_SET_POWER, DP_SET_POWER_D0); + if (ret != 1) { + DRM_DEV_ERROR(dp->dev, "Failed to set DP Power0 %d\n", ret); + return ret; + } + + ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_STATUS, &sink); + if (ret != 1) { + DRM_DEV_ERROR(dp->dev, "Failed to read psr status %d\n", ret); + return ret; + } else if (sink == DP_PSR_SINK_INACTIVE) { + DRM_DEV_ERROR(dp->dev, "sink inactive, skip disable psr"); + return 0; + } + + ret = analogix_dp_train_link(dp); + if (ret) { + DRM_DEV_ERROR(dp->dev, "Failed to train the link %d\n", ret); + return ret; + } + + /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ + memset(&psr_vsc, 0, sizeof(psr_vsc)); + psr_vsc.sdp_header.HB0 = 0; + psr_vsc.sdp_header.HB1 = 0x7; + psr_vsc.sdp_header.HB2 = 0x2; + psr_vsc.sdp_header.HB3 = 0x8; + + psr_vsc.DB0 = 0; + psr_vsc.DB1 = 0; + + return analogix_dp_send_psr_spd(dp, &psr_vsc, true); +} + /* * This function is a bit of a catch-all for panel preparation, hopefully * simplifying the logic of functions that need to prepare/unprepare the panel @@ -1244,6 +1265,10 @@ static void analogix_dp_bridge_pre_enable(struct drm_bridge *bridge) struct analogix_dp_device *dp = bridge->driver_private; int ret;

+ /* Don't touch the panel if we're coming back from PSR */ + if (dp->connector.state->psr_transition) + return; + ret = analogix_dp_prepare_panel(dp, true, true); if (ret) DRM_ERROR("failed to setup the panel ret = %d\n", ret); @@ -1309,6 +1334,14 @@ static void analogix_dp_bridge_enable(struct drm_bridge *bridge) struct analogix_dp_device *dp = bridge->driver_private; int timeout_loop = 0;

+ /* Not a full enable, just disable PSR and continue */ + if (dp->connector.state->psr_transition) { + int ret = analogix_dp_disable_psr(dp); + if (ret) + DRM_ERROR("Failed to disable psr %d\n", ret); + return; + } + if (dp->dpms_mode == DRM_MODE_DPMS_ON) return;

@@ -1356,11 +1389,38 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge) if (ret) DRM_ERROR("failed to setup the panel ret = %d\n", ret);

- dp->psr_enable = false; + drm_psr_helper_unregister(&dp->connector); + dp->fast_train_enable = false; dp->dpms_mode = DRM_MODE_DPMS_OFF; }

+static void analogix_dp_bridge_atomic_disable(struct drm_bridge *bridge) +{ + struct analogix_dp_device *dp = bridge->driver_private; + struct drm_connector_state *conn_state = dp->connector.state; + + /* Don't do a full disable on PSR transitions */ + if (conn_state->psr_transition) + return; + + analogix_dp_bridge_disable(bridge); +} + +static void analogix_dp_bridge_post_disable(struct drm_bridge *bridge) +{ + struct analogix_dp_device *dp = bridge->driver_private; + struct drm_connector_state *conn_state = dp->connector.state; + int ret; + + if (conn_state->psr_transition) { + ret = analogix_dp_enable_psr(dp); + if (ret) + DRM_ERROR("Failed to enable psr (%d)\n", ret); + return; + } +} + static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge, const struct drm_display_mode *orig_mode, const struct drm_display_mode *mode) @@ -1440,16 +1500,11 @@ static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge, video->interlaced = true; }

-static void analogix_dp_bridge_nop(struct drm_bridge *bridge) -{ - /* do nothing */ -} - static const struct drm_bridge_funcs analogix_dp_bridge_funcs = { .pre_enable = analogix_dp_bridge_pre_enable, .enable = analogix_dp_bridge_enable, - .disable = analogix_dp_bridge_disable, - .post_disable = analogix_dp_bridge_nop, + .disable = analogix_dp_bridge_atomic_disable, + .post_disable = analogix_dp_bridge_post_disable, .mode_set = analogix_dp_bridge_mode_set, .attach = analogix_dp_bridge_attach, }; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h index 769255dc6e99..e4cdd69107e3 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -173,7 +173,6 @@ struct analogix_dp_device { int dpms_mode; int hpd_gpio; bool force_hpd; - bool psr_enable; bool fast_train_enable;

struct mutex panel_lock; diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile index f6fc9d5dd0ad..a777726c23cb 100644 --- a/drivers/gpu/drm/rockchip/Makefile +++ b/drivers/gpu/drm/rockchip/Makefile @@ -4,8 +4,7 @@ # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.

rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o \ - rockchip_drm_gem.o rockchip_drm_psr.o \ - rockchip_drm_vop.o rockchip_vop_reg.o + rockchip_drm_gem.o rockchip_drm_vop.o rockchip_vop_reg.o rockchipdrm-$(CONFIG_DRM_FBDEV_EMULATION) += rockchip_drm_fbdev.o

rockchipdrm-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index bc4423624209..26090b4ba4ee 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -32,7 +32,6 @@ #include <drm/bridge/analogix_dp.h>

#include "rockchip_drm_drv.h" -#include "rockchip_drm_psr.h" #include "rockchip_drm_vop.h"

#define RK3288_GRF_SOC_CON6 0x25c @@ -77,29 +76,6 @@ struct rockchip_dp_device { struct analogix_dp_plat_data plat_data; };

-static int analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) -{ - struct rockchip_dp_device *dp = to_dp(encoder); - int ret; - - if (!analogix_dp_psr_enabled(dp->adp)) - return 0; - - DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit"); - - ret = rockchip_drm_wait_vact_end(dp->encoder.crtc, - PSR_WAIT_LINE_FLAG_TIMEOUT_MS); - if (ret) { - DRM_DEV_ERROR(dp->dev, "line flag interrupt did not arrive\n"); - return -ETIMEDOUT; - } - - if (enabled) - return analogix_dp_enable_psr(dp->adp); - else - return analogix_dp_disable_psr(dp->adp); -} - static int rockchip_dp_pre_init(struct rockchip_dp_device *dp) { reset_control_assert(dp->rst); @@ -130,21 +106,9 @@ static int rockchip_dp_poweron_start(struct analogix_dp_plat_data *plat_data) return ret; }

-static int rockchip_dp_poweron_end(struct analogix_dp_plat_data *plat_data) -{ - struct rockchip_dp_device *dp = to_dp(plat_data); - - return rockchip_drm_psr_inhibit_put(&dp->encoder); -} - static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data) { struct rockchip_dp_device *dp = to_dp(plat_data); - int ret; - - ret = rockchip_drm_psr_inhibit_get(&dp->encoder); - if (ret != 0) - return ret;

clk_disable_unprepare(dp->pclk);

@@ -190,6 +154,9 @@ static void rockchip_dp_drm_encoder_enable(struct drm_encoder *encoder) int ret; u32 val;

+ if (analogix_dp_in_psr_transition(dp->adp)) + return; + ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder); if (ret < 0) return; @@ -214,9 +181,24 @@ static void rockchip_dp_drm_encoder_enable(struct drm_encoder *encoder) clk_disable_unprepare(dp->grfclk); }

-static void rockchip_dp_drm_encoder_nop(struct drm_encoder *encoder) +static void rockchip_dp_drm_encoder_disable(struct drm_encoder *encoder) { - /* do nothing */ + struct rockchip_dp_device *dp = to_dp(encoder); + struct drm_crtc *crtc; + int ret; + + drm_for_each_crtc(crtc, dp->drm_dev) { + if (!(crtc->state->encoder_mask & drm_encoder_mask(encoder))) + continue; + + if (!crtc->state->psr_transition) + continue; + + ret = rockchip_drm_wait_vact_end(crtc, + PSR_WAIT_LINE_FLAG_TIMEOUT_MS); + if (ret) + DRM_DEV_ERROR(dp->dev, "line flag irq timed out\n"); + } }

static int @@ -246,7 +228,7 @@ static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = { .mode_fixup = rockchip_dp_drm_encoder_mode_fixup, .mode_set = rockchip_dp_drm_encoder_mode_set, .enable = rockchip_dp_drm_encoder_enable, - .disable = rockchip_dp_drm_encoder_nop, + .disable = rockchip_dp_drm_encoder_disable, .atomic_check = rockchip_dp_drm_encoder_atomic_check, };

@@ -338,23 +320,16 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,

dp->plat_data.dev_type = dp->data->chip_type; dp->plat_data.power_on_start = rockchip_dp_poweron_start; - dp->plat_data.power_on_end = rockchip_dp_poweron_end; dp->plat_data.power_off = rockchip_dp_powerdown; dp->plat_data.get_modes = rockchip_dp_get_modes;

- ret = rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set); - if (ret < 0) - goto err_cleanup_encoder; - dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data); if (IS_ERR(dp->adp)) { ret = PTR_ERR(dp->adp); - goto err_unreg_psr; + goto err_cleanup_encoder; }

return 0; -err_unreg_psr: - rockchip_drm_psr_unregister(&dp->encoder); err_cleanup_encoder: dp->encoder.funcs->destroy(&dp->encoder); return ret; @@ -366,7 +341,6 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master, struct rockchip_dp_device *dp = dev_get_drvdata(dev);

analogix_dp_unbind(dp->adp); - rockchip_drm_psr_unregister(&dp->encoder); dp->encoder.funcs->destroy(&dp->encoder);

dp->adp = ERR_PTR(-ENODEV); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index d7fa17f12769..222258497398 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -19,6 +19,7 @@ #include <drm/drm_gem_cma_helper.h> #include <drm/drm_of.h> #include <drm/drm_probe_helper.h> +#include <drm/drm_psr_helper.h> #include <linux/dma-mapping.h> #include <linux/dma-iommu.h> #include <linux/pm_runtime.h> @@ -40,6 +41,8 @@ #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0

+#define ROCKCHIP_DRM_PSR_ENTRY_DELAY_MS 100 + static bool is_support_iommu = true; static struct drm_driver rockchip_drm_driver;

@@ -145,10 +148,14 @@ static int rockchip_drm_bind(struct device *dev)

rockchip_drm_mode_config_init(drm_dev);

+ ret = drm_psr_helper_init(drm_dev, ROCKCHIP_DRM_PSR_ENTRY_DELAY_MS); + if (ret) + goto err_mode_config_cleanup; + /* Try to bind all sub drivers. */ ret = component_bind_all(dev, drm_dev); if (ret) - goto err_mode_config_cleanup; + goto err_psr_helper_cleanup;

ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc); if (ret) @@ -179,6 +186,8 @@ static int rockchip_drm_bind(struct device *dev) rockchip_drm_fbdev_fini(drm_dev); err_unbind_all: component_unbind_all(dev, drm_dev); +err_psr_helper_cleanup: + drm_psr_helper_cleanup(drm_dev); err_mode_config_cleanup: drm_mode_config_cleanup(drm_dev); rockchip_iommu_cleanup(drm_dev); @@ -200,6 +209,7 @@ static void rockchip_drm_unbind(struct device *dev)

drm_atomic_helper_shutdown(drm_dev); component_unbind_all(dev, drm_dev); + drm_psr_helper_cleanup(drm_dev); drm_mode_config_cleanup(drm_dev); rockchip_iommu_cleanup(drm_dev);

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c index 97438bbbe389..7e121875e3c9 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c @@ -23,22 +23,10 @@ #include "rockchip_drm_drv.h" #include "rockchip_drm_fb.h" #include "rockchip_drm_gem.h" -#include "rockchip_drm_psr.h" - -static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb, - struct drm_file *file, - unsigned int flags, unsigned int color, - struct drm_clip_rect *clips, - unsigned int num_clips) -{ - rockchip_drm_psr_flush_all(fb->dev); - return 0; -}

static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = { .destroy = drm_gem_fb_destroy, .create_handle = drm_gem_fb_create_handle, - .dirty = rockchip_drm_fb_dirty, };

static struct drm_framebuffer * @@ -132,8 +120,6 @@ rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) { struct drm_device *dev = old_state->dev;

- rockchip_drm_psr_inhibit_get_state(old_state); - drm_atomic_helper_commit_modeset_disables(dev, old_state);

drm_atomic_helper_commit_modeset_enables(dev, old_state); @@ -141,8 +127,6 @@ rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) drm_atomic_helper_commit_planes(dev, old_state, DRM_PLANE_COMMIT_ACTIVE_ONLY);

- rockchip_drm_psr_inhibit_put_state(old_state); - drm_atomic_helper_commit_hw_done(old_state);

drm_atomic_helper_wait_for_vblanks(dev, old_state); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c deleted file mode 100644 index a0c8bd235b67..000000000000 --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c +++ /dev/null @@ -1,290 +0,0 @@ -/* - * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd - * Author: Yakir Yang ykk@rock-chips.com - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <drm/drmP.h> -#include <drm/drm_atomic.h> -#include <drm/drm_probe_helper.h> - -#include "rockchip_drm_drv.h" -#include "rockchip_drm_psr.h" - -#define PSR_FLUSH_TIMEOUT_MS 100 - -struct psr_drv { - struct list_head list; - struct drm_encoder *encoder; - - struct mutex lock; - int inhibit_count; - bool enabled; - - struct delayed_work flush_work; - - int (*set)(struct drm_encoder *encoder, bool enable); -}; - -static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder) -{ - struct rockchip_drm_private *drm_drv = encoder->dev->dev_private; - struct psr_drv *psr; - - mutex_lock(&drm_drv->psr_list_lock); - list_for_each_entry(psr, &drm_drv->psr_list, list) { - if (psr->encoder == encoder) - goto out; - } - psr = ERR_PTR(-ENODEV); - -out: - mutex_unlock(&drm_drv->psr_list_lock); - return psr; -} - -static int psr_set_state_locked(struct psr_drv *psr, bool enable) -{ - int ret; - - if (psr->inhibit_count > 0) - return -EINVAL; - - if (enable == psr->enabled) - return 0; - - ret = psr->set(psr->encoder, enable); - if (ret) - return ret; - - psr->enabled = enable; - return 0; -} - -static void psr_flush_handler(struct work_struct *work) -{ - struct psr_drv *psr = container_of(to_delayed_work(work), - struct psr_drv, flush_work); - - mutex_lock(&psr->lock); - psr_set_state_locked(psr, true); - mutex_unlock(&psr->lock); -} - -/** - * rockchip_drm_psr_inhibit_put - release PSR inhibit on given encoder - * @encoder: encoder to obtain the PSR encoder - * - * Decrements PSR inhibit count on given encoder. Should be called only - * for a PSR inhibit count increment done before. If PSR inhibit counter - * reaches zero, PSR flush work is scheduled to make the hardware enter - * PSR mode in PSR_FLUSH_TIMEOUT_MS. - * - * Returns: - * Zero on success, negative errno on failure. - */ -int rockchip_drm_psr_inhibit_put(struct drm_encoder *encoder) -{ - struct psr_drv *psr = find_psr_by_encoder(encoder); - - if (IS_ERR(psr)) - return PTR_ERR(psr); - - mutex_lock(&psr->lock); - --psr->inhibit_count; - WARN_ON(psr->inhibit_count < 0); - if (!psr->inhibit_count) - mod_delayed_work(system_wq, &psr->flush_work, - PSR_FLUSH_TIMEOUT_MS); - mutex_unlock(&psr->lock); - - return 0; -} -EXPORT_SYMBOL(rockchip_drm_psr_inhibit_put); - -void rockchip_drm_psr_inhibit_get_state(struct drm_atomic_state *state) -{ - struct drm_crtc *crtc; - struct drm_crtc_state *crtc_state; - struct drm_encoder *encoder; - u32 encoder_mask = 0; - int i; - - for_each_old_crtc_in_state(state, crtc, crtc_state, i) { - encoder_mask |= crtc_state->encoder_mask; - encoder_mask |= crtc->state->encoder_mask; - } - - drm_for_each_encoder_mask(encoder, state->dev, encoder_mask) - rockchip_drm_psr_inhibit_get(encoder); -} -EXPORT_SYMBOL(rockchip_drm_psr_inhibit_get_state); - -void rockchip_drm_psr_inhibit_put_state(struct drm_atomic_state *state) -{ - struct drm_crtc *crtc; - struct drm_crtc_state *crtc_state; - struct drm_encoder *encoder; - u32 encoder_mask = 0; - int i; - - for_each_old_crtc_in_state(state, crtc, crtc_state, i) { - encoder_mask |= crtc_state->encoder_mask; - encoder_mask |= crtc->state->encoder_mask; - } - - drm_for_each_encoder_mask(encoder, state->dev, encoder_mask) - rockchip_drm_psr_inhibit_put(encoder); -} -EXPORT_SYMBOL(rockchip_drm_psr_inhibit_put_state); - -/** - * rockchip_drm_psr_inhibit_get - acquire PSR inhibit on given encoder - * @encoder: encoder to obtain the PSR encoder - * - * Increments PSR inhibit count on given encoder. This function guarantees - * that after it returns PSR is turned off on given encoder and no PSR-related - * hardware state change occurs at least until a matching call to - * rockchip_drm_psr_inhibit_put() is done. - * - * Returns: - * Zero on success, negative errno on failure. - */ -int rockchip_drm_psr_inhibit_get(struct drm_encoder *encoder) -{ - struct psr_drv *psr = find_psr_by_encoder(encoder); - - if (IS_ERR(psr)) - return PTR_ERR(psr); - - mutex_lock(&psr->lock); - psr_set_state_locked(psr, false); - ++psr->inhibit_count; - mutex_unlock(&psr->lock); - cancel_delayed_work_sync(&psr->flush_work); - - return 0; -} -EXPORT_SYMBOL(rockchip_drm_psr_inhibit_get); - -static void rockchip_drm_do_flush(struct psr_drv *psr) -{ - cancel_delayed_work_sync(&psr->flush_work); - - mutex_lock(&psr->lock); - if (!psr_set_state_locked(psr, false)) - mod_delayed_work(system_wq, &psr->flush_work, - PSR_FLUSH_TIMEOUT_MS); - mutex_unlock(&psr->lock); -} - -/** - * rockchip_drm_psr_flush_all - force to flush all registered PSR encoders - * @dev: drm device - * - * Disable the PSR function for all registered encoders, and then enable the - * PSR function back after PSR_FLUSH_TIMEOUT. If encoder PSR state have been - * changed during flush time, then keep the state no change after flush - * timeout. - * - * Returns: - * Zero on success, negative errno on failure. - */ -void rockchip_drm_psr_flush_all(struct drm_device *dev) -{ - struct rockchip_drm_private *drm_drv = dev->dev_private; - struct psr_drv *psr; - - mutex_lock(&drm_drv->psr_list_lock); - list_for_each_entry(psr, &drm_drv->psr_list, list) - rockchip_drm_do_flush(psr); - mutex_unlock(&drm_drv->psr_list_lock); -} -EXPORT_SYMBOL(rockchip_drm_psr_flush_all); - -/** - * rockchip_drm_psr_register - register encoder to psr driver - * @encoder: encoder that obtain the PSR function - * @psr_set: call back to set PSR state - * - * The function returns with PSR inhibit counter initialized with one - * and the caller (typically encoder driver) needs to call - * rockchip_drm_psr_inhibit_put() when it becomes ready to accept PSR - * enable request. - * - * Returns: - * Zero on success, negative errno on failure. - */ -int rockchip_drm_psr_register(struct drm_encoder *encoder, - int (*psr_set)(struct drm_encoder *, bool enable)) -{ - struct rockchip_drm_private *drm_drv; - struct psr_drv *psr; - - if (!encoder || !psr_set) - return -EINVAL; - - drm_drv = encoder->dev->dev_private; - - psr = kzalloc(sizeof(struct psr_drv), GFP_KERNEL); - if (!psr) - return -ENOMEM; - - INIT_DELAYED_WORK(&psr->flush_work, psr_flush_handler); - mutex_init(&psr->lock); - - psr->inhibit_count = 1; - psr->enabled = false; - psr->encoder = encoder; - psr->set = psr_set; - - mutex_lock(&drm_drv->psr_list_lock); - list_add_tail(&psr->list, &drm_drv->psr_list); - mutex_unlock(&drm_drv->psr_list_lock); - - return 0; -} -EXPORT_SYMBOL(rockchip_drm_psr_register); - -/** - * rockchip_drm_psr_unregister - unregister encoder to psr driver - * @encoder: encoder that obtain the PSR function - * @psr_set: call back to set PSR state - * - * It is expected that the PSR inhibit counter is 1 when this function is - * called, which corresponds to a state when related encoder has been - * disconnected from any CRTCs and its driver called - * rockchip_drm_psr_inhibit_get() to stop the PSR logic. - * - * Returns: - * Zero on success, negative errno on failure. - */ -void rockchip_drm_psr_unregister(struct drm_encoder *encoder) -{ - struct rockchip_drm_private *drm_drv = encoder->dev->dev_private; - struct psr_drv *psr, *n; - - mutex_lock(&drm_drv->psr_list_lock); - list_for_each_entry_safe(psr, n, &drm_drv->psr_list, list) { - if (psr->encoder == encoder) { - /* - * Any other value would mean that the encoder - * is still in use. - */ - WARN_ON(psr->inhibit_count != 1); - - list_del(&psr->list); - kfree(psr); - } - } - mutex_unlock(&drm_drv->psr_list_lock); -} -EXPORT_SYMBOL(rockchip_drm_psr_unregister); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h deleted file mode 100644 index 25350ba3237b..000000000000 --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h +++ /dev/null @@ -1,30 +0,0 @@ -/* - * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd - * Author: Yakir Yang ykk@rock-chips.com - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __ROCKCHIP_DRM_PSR___ -#define __ROCKCHIP_DRM_PSR___ - -void rockchip_drm_psr_flush_all(struct drm_device *dev); - -int rockchip_drm_psr_inhibit_put(struct drm_encoder *encoder); -int rockchip_drm_psr_inhibit_get(struct drm_encoder *encoder); - -void rockchip_drm_psr_inhibit_get_state(struct drm_atomic_state *state); -void rockchip_drm_psr_inhibit_put_state(struct drm_atomic_state *state); - -int rockchip_drm_psr_register(struct drm_encoder *encoder, - int (*psr_set)(struct drm_encoder *, bool enable)); -void rockchip_drm_psr_unregister(struct drm_encoder *encoder); - -#endif /* __ROCKCHIP_DRM_PSR__ */ diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index c7d4c6073ea5..66c99d57e62a 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -42,7 +42,6 @@ #include "rockchip_drm_drv.h" #include "rockchip_drm_gem.h" #include "rockchip_drm_fb.h" -#include "rockchip_drm_psr.h" #include "rockchip_drm_vop.h" #include "rockchip_rgb.h"

@@ -541,7 +540,7 @@ static void vop_core_clks_disable(struct vop *vop) clk_disable(vop->hclk); }

-static int vop_enable(struct drm_crtc *crtc) +static int vop_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { struct vop *vop = to_vop(crtc); int ret, i; @@ -581,12 +580,18 @@ static int vop_enable(struct drm_crtc *crtc) * We need to make sure that all windows are disabled before we * enable the crtc. Otherwise we might try to scan from a destroyed * buffer later. + * + * In the case of enable-after-PSR, we don't need to worry about this + * case since the buffer is guaranteed to be valid and disabling the + * window will result in screen glitches on PSR exit. */ - for (i = 0; i < vop->data->win_size; i++) { - struct vop_win *vop_win = &vop->win[i]; - const struct vop_win_data *win = vop_win->data; + if (!old_state->psr_transition) { + for (i = 0; i < vop->data->win_size; i++) { + struct vop_win *vop_win = &vop->win[i]; + const struct vop_win_data *win = vop_win->data;

- VOP_WIN_SET(vop, win, enable, 0); + VOP_WIN_SET(vop, win, enable, 0); + } } spin_unlock(&vop->reg_lock);

@@ -937,12 +942,10 @@ static void vop_plane_atomic_async_update(struct drm_plane *plane, }

if (vop->is_enabled) { - rockchip_drm_psr_inhibit_get_state(new_state->state); vop_plane_atomic_update(plane, plane->state); spin_lock(&vop->reg_lock); vop_cfg_done(vop); spin_unlock(&vop->reg_lock); - rockchip_drm_psr_inhibit_put_state(new_state->state); }

plane->funcs->atomic_destroy_state(plane, plane_state); @@ -1035,7 +1038,7 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,

WARN_ON(vop->event);

- ret = vop_enable(crtc); + ret = vop_enable(crtc, old_state); if (ret) { mutex_unlock(&vop->vop_lock); DRM_DEV_ERROR(vop->dev, "Failed to enable vop (%d)\n", ret); diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h index 475b706b49de..29ce16ef0926 100644 --- a/include/drm/bridge/analogix_dp.h +++ b/include/drm/bridge/analogix_dp.h @@ -42,9 +42,7 @@ struct analogix_dp_plat_data { struct drm_connector *); };

-int analogix_dp_psr_enabled(struct analogix_dp_device *dp); -int analogix_dp_enable_psr(struct analogix_dp_device *dp); -int analogix_dp_disable_psr(struct analogix_dp_device *dp); +bool analogix_dp_in_psr_transition(struct analogix_dp_device *dp);

int analogix_dp_resume(struct analogix_dp_device *dp); int analogix_dp_suspend(struct analogix_dp_device *dp);