From: Mark Yao yzq@rock-chips.com
This adds support for Rockchip soc lvds found on rk3288
Signed-off-by: Mark Yao yzq@rock-chips.com Signed-off-by: Heiko Stuebner heiko@sntech.de --- This still needs to address Laurent's comment about trying to get the lvds settings from the panel/connected device instead of encoding them as separate properties in the devicetree.
drivers/gpu/drm/rockchip/Kconfig | 9 + drivers/gpu/drm/rockchip/Makefile | 1 + drivers/gpu/drm/rockchip/rockchip_lvds.c | 640 +++++++++++++++++++++++++++++++ drivers/gpu/drm/rockchip/rockchip_lvds.h | 107 ++++++ 4 files changed, 757 insertions(+) create mode 100644 drivers/gpu/drm/rockchip/rockchip_lvds.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_lvds.h
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig index 35215f6..845f953 100644 --- a/drivers/gpu/drm/rockchip/Kconfig +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -25,3 +25,12 @@ config ROCKCHIP_DW_HDMI for the Synopsys DesignWare HDMI driver. If you want to enable HDMI on RK3288 based SoC, you should selet this option. + +config ROCKCHIP_LVDS + tristate "Rockchip lvds support" + depends on DRM_ROCKCHIP + help + Choose this option to enable support for Rockchip LVDS controllers. + Rockchip rk3288 SoC has LVDS TX Controller can be used, and it + support lvds, rgb, dual lvds output mode. say Y to enable its + driver. diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile index f3d8a19..8541304 100644 --- a/drivers/gpu/drm/rockchip/Makefile +++ b/drivers/gpu/drm/rockchip/Makefile @@ -6,5 +6,6 @@ rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o rockchip_drm_fbdev.o \ rockchip_drm_gem.o
obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o +obj-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_drm_vop.o diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c new file mode 100644 index 0000000..657609e --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -0,0 +1,640 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author: + * Mark Yao mark.yao@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_crtc_helper.h> +#include <drm/drm_dp_helper.h> +#include <drm/drm_panel.h> +#include <drm/drm_of.h> + +#include <linux/component.h> +#include <linux/clk.h> +#include <linux/mfd/syscon.h> +#include <linux/of_graph.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/reset.h> + +#include <video/display_timing.h> + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_vop.h" +#include "rockchip_lvds.h" + +#define DISPLAY_OUTPUT_RGB 0 +#define DISPLAY_OUTPUT_LVDS 1 +#define DISPLAY_OUTPUT_DUAL_LVDS 2 + +#define connector_to_lvds(c) \ + container_of(c, struct rockchip_lvds, connector) + +#define encoder_to_lvds(c) \ + container_of(c, struct rockchip_lvds, encoder) + +/* + * @grf_offset: offset inside the grf regmap for setting the rockchip lvds + */ +struct rockchip_lvds_soc_data { + int grf_soc_con6; + int grf_soc_con7; +}; + +struct rockchip_lvds { + void *base; + struct device *dev; + void __iomem *regs; + struct regmap *grf; + struct clk *pclk; + const struct rockchip_lvds_soc_data *soc_data; + + struct regulator_bulk_data supplies[3]; + + int output; + int format; + + struct drm_device *drm_dev; + struct drm_panel *panel; + struct drm_connector connector; + struct drm_encoder encoder; + + struct mutex suspend_lock; + int suspend; +}; + +static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val) +{ + writel_relaxed(val, lvds->regs + offset); + writel_relaxed(val, lvds->regs + offset + 0x100); +} + +static inline int lvds_name_to_format(const char *s) +{ + if (!s) + return -EINVAL; + + if (strncmp(s, "jeida", 6) == 0) + return LVDS_FORMAT_JEIDA; + else if (strncmp(s, "vesa", 6) == 0) + return LVDS_FORMAT_VESA; + + return -EINVAL; +} + +static inline int lvds_name_to_output(const char *s) +{ + if (!s) + return -EINVAL; + + if (strncmp(s, "rgb", 3) == 0) + return DISPLAY_OUTPUT_RGB; + else if (strncmp(s, "lvds", 4) == 0) + return DISPLAY_OUTPUT_LVDS; + else if (strncmp(s, "duallvds", 8) == 0) + return DISPLAY_OUTPUT_DUAL_LVDS; + + return -EINVAL; +} + +static int rockchip_lvds_poweron(struct rockchip_lvds *lvds) +{ + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(lvds->supplies), + lvds->supplies); + if (ret < 0) + return ret; + + ret = clk_enable(lvds->pclk); + if (ret < 0) { + dev_err(lvds->dev, "failed to enable lvds pclk %d\n", ret); + return ret; + } + + writel(RK3288_LVDS_CFG_REGC_PLL_ENABLE, + lvds->regs + RK3288_LVDS_CFG_REGC); + writel(RK3288_LVDS_CFG_REG21_TX_ENABLE, + lvds->regs + RK3288_LVDS_CFG_REG21); + + return 0; +} + +static void rockchip_lvds_poweroff(struct rockchip_lvds *lvds) +{ + int ret; + + ret = regmap_write(lvds->grf, + lvds->soc_data->grf_soc_con7, 0xffff8000); + if (ret != 0) + dev_err(lvds->dev, "Could not write to GRF: %d\n", ret); + + writel(RK3288_LVDS_CFG_REG21_TX_DISABLE, + lvds->regs + RK3288_LVDS_CFG_REG21); + writel(RK3288_LVDS_CFG_REGC_PLL_DISABLE, + lvds->regs + RK3288_LVDS_CFG_REGC); + + clk_disable(lvds->pclk); + + regulator_bulk_disable(ARRAY_SIZE(lvds->supplies), + lvds->supplies); +} + +static enum drm_connector_status +rockchip_lvds_connector_detect(struct drm_connector *connector, bool force) +{ + return connector_status_connected; +} + +static void rockchip_lvds_connector_destroy(struct drm_connector *connector) +{ + drm_connector_cleanup(connector); +} + +static struct drm_connector_funcs rockchip_lvds_connector_funcs = { + .dpms = drm_helper_connector_dpms, + .detect = rockchip_lvds_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = rockchip_lvds_connector_destroy, +}; + +static int rockchip_lvds_connector_get_modes(struct drm_connector *connector) +{ + struct rockchip_lvds *lvds = connector_to_lvds(connector); + struct drm_panel *panel = lvds->panel; + + return panel->funcs->get_modes(panel); +} + +static struct drm_encoder * +rockchip_lvds_connector_best_encoder(struct drm_connector *connector) +{ + struct rockchip_lvds *lvds = connector_to_lvds(connector); + + return &lvds->encoder; +} + +static enum drm_mode_status rockchip_lvds_connector_mode_valid( + struct drm_connector *connector, + struct drm_display_mode *mode) +{ + return MODE_OK; +} + +static +struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = { + .get_modes = rockchip_lvds_connector_get_modes, + .mode_valid = rockchip_lvds_connector_mode_valid, + .best_encoder = rockchip_lvds_connector_best_encoder, +}; + +static void rockchip_lvds_encoder_dpms(struct drm_encoder *encoder, int mode) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + int ret; + + mutex_lock(&lvds->suspend_lock); + + switch (mode) { + case DRM_MODE_DPMS_ON: + if (!lvds->suspend) + goto out; + + drm_panel_prepare(lvds->panel); + ret = rockchip_lvds_poweron(lvds); + if (ret < 0) { + drm_panel_unprepare(lvds->panel); + return; + } + drm_panel_enable(lvds->panel); + + lvds->suspend = false; + break; + case DRM_MODE_DPMS_STANDBY: + case DRM_MODE_DPMS_SUSPEND: + case DRM_MODE_DPMS_OFF: + if (lvds->suspend) + goto out; + + drm_panel_disable(lvds->panel); + rockchip_lvds_poweroff(lvds); + drm_panel_unprepare(lvds->panel); + + lvds->suspend = true; + break; + default: + break; + } + +out: + mutex_unlock(&lvds->suspend_lock); +} + +static bool +rockchip_lvds_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void rockchip_lvds_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + u32 h_bp = mode->htotal - mode->hsync_start; + u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0; + u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0; + u32 val; + int ret; + + val = lvds->format; + if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS) + val |= LVDS_DUAL | LVDS_CH0_EN | LVDS_CH1_EN; + else if (lvds->output == DISPLAY_OUTPUT_LVDS) + val |= LVDS_CH0_EN; + else if (lvds->output == DISPLAY_OUTPUT_RGB) + val |= LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN; + + if (h_bp & 0x01) + val |= LVDS_START_PHASE_RST_1; + + val |= (pin_dclk << 8) | (pin_hsync << 9); + val |= (0xffff << 16); + ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val); + if (ret != 0) { + dev_err(lvds->dev, "Could not write to GRF: %d\n", ret); + return; + } + + if (lvds->output == DISPLAY_OUTPUT_RGB) { + lvds_writel(lvds, RK3288_LVDS_CH0_REG0, + RK3288_LVDS_CH0_REG0_TTL_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN | + RK3288_LVDS_CH0_REG0_LANE4_EN | + RK3288_LVDS_CH0_REG0_LANE3_EN | + RK3288_LVDS_CH0_REG0_LANE2_EN | + RK3288_LVDS_CH0_REG0_LANE1_EN | + RK3288_LVDS_CH0_REG0_LANE0_EN); + lvds_writel(lvds, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + + lvds_writel(lvds, RK3288_LVDS_CH0_REG3, + RK3288_LVDS_PLL_FBDIV_REG3(0x46)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG4, + RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE); + lvds_writel(lvds, RK3288_LVDS_CH0_REG5, + RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA); + lvds_writel(lvds, RK3288_LVDS_CH0_REGD, + RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG20, + RK3288_LVDS_CH0_REG20_LSB); + } else { + lvds_writel(lvds, RK3288_LVDS_CH0_REG0, + RK3288_LVDS_CH0_REG0_LVDS_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN | + RK3288_LVDS_CH0_REG0_LANE4_EN | + RK3288_LVDS_CH0_REG0_LANE3_EN | + RK3288_LVDS_CH0_REG0_LANE2_EN | + RK3288_LVDS_CH0_REG0_LANE1_EN | + RK3288_LVDS_CH0_REG0_LANE0_EN); + lvds_writel(lvds, RK3288_LVDS_CH0_REG1, + RK3288_LVDS_CH0_REG1_LANECK_BIAS | + RK3288_LVDS_CH0_REG1_LANE4_BIAS | + RK3288_LVDS_CH0_REG1_LANE3_BIAS | + RK3288_LVDS_CH0_REG1_LANE2_BIAS | + RK3288_LVDS_CH0_REG1_LANE1_BIAS | + RK3288_LVDS_CH0_REG1_LANE0_BIAS); + lvds_writel(lvds, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE | + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG3, + RK3288_LVDS_PLL_FBDIV_REG3(0x46)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00); + lvds_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00); + lvds_writel(lvds, RK3288_LVDS_CH0_REGD, + RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); + lvds_writel(lvds, RK3288_LVDS_CH0_REG20, + RK3288_LVDS_CH0_REG20_LSB); + } + + dsb(); +} + +static void rockchip_lvds_encoder_prepare(struct drm_encoder *encoder) +{ + struct rockchip_lvds *lvds = encoder_to_lvds(encoder); + u32 val; + int ret; + + ret = rockchip_drm_crtc_mode_config(encoder->crtc, + lvds->connector.connector_type, + ROCKCHIP_OUT_MODE_P888); + if (ret < 0) { + dev_err(lvds->dev, "Could not set crtc mode config: %d\n", ret); + return; + } + + ret = rockchip_drm_encoder_get_mux_id(lvds->dev->of_node, encoder); + if (ret < 0) + return; + + if (ret) + val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT | + (RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16); + else + val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16; + ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con6, val); + if (ret != 0) { + dev_err(lvds->dev, "Could not write to GRF: %d\n", ret); + return; + } +} + +static void rockchip_lvds_encoder_commit(struct drm_encoder *encoder) +{ + rockchip_lvds_encoder_dpms(encoder, DRM_MODE_DPMS_ON); +} + +static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder) +{ + rockchip_lvds_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); +} + +static struct drm_encoder_helper_funcs rockchip_lvds_encoder_helper_funcs = { + .dpms = rockchip_lvds_encoder_dpms, + .mode_fixup = rockchip_lvds_encoder_mode_fixup, + .mode_set = rockchip_lvds_encoder_mode_set, + .prepare = rockchip_lvds_encoder_prepare, + .commit = rockchip_lvds_encoder_commit, + .disable = rockchip_lvds_encoder_disable, +}; + +static void rockchip_lvds_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); +} + +static struct drm_encoder_funcs rockchip_lvds_encoder_funcs = { + .destroy = rockchip_lvds_encoder_destroy, +}; + +static struct rockchip_lvds_soc_data rk3288_lvds_data = { + .grf_soc_con6 = 0x025c, + .grf_soc_con7 = 0x0260, +}; + +static const struct of_device_id rockchip_lvds_dt_ids[] = { + { + .compatible = "rockchip,rk3288-lvds", + .data = &rk3288_lvds_data + }, + {} +}; +MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids); + +static int rockchip_lvds_bind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + struct drm_encoder *encoder; + struct drm_connector *connector; + int ret; + + lvds->drm_dev = drm_dev; + + encoder = &lvds->encoder; + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, + dev->of_node); + + ret = drm_encoder_init(drm_dev, encoder, &rockchip_lvds_encoder_funcs, + DRM_MODE_ENCODER_LVDS); + if (ret < 0) { + DRM_ERROR("failed to initialize encoder with drm\n"); + return ret; + } + + drm_encoder_helper_add(encoder, &rockchip_lvds_encoder_helper_funcs); + + connector = &lvds->connector; + connector->dpms = DRM_MODE_DPMS_OFF; + + ret = drm_connector_init(drm_dev, connector, + &rockchip_lvds_connector_funcs, + DRM_MODE_CONNECTOR_LVDS); + if (ret < 0) { + DRM_ERROR("failed to initialize connector with drm\n"); + goto err_free_encoder; + } + + drm_connector_helper_add(connector, + &rockchip_lvds_connector_helper_funcs); + + ret = drm_mode_connector_attach_encoder(connector, encoder); + if (ret < 0) { + DRM_ERROR("failed to attach connector and encoder\n"); + goto err_free_connector; + } + + ret = drm_panel_attach(lvds->panel, connector); + if (ret < 0) { + DRM_ERROR("failed to attach connector and encoder\n"); + goto err_free_connector; + } + + return 0; + +err_free_connector: + drm_connector_cleanup(connector); +err_free_encoder: + drm_encoder_cleanup(encoder); + return ret; +} + +static void rockchip_lvds_unbind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(dev); + + if (lvds->panel) { + rockchip_lvds_encoder_dpms(&lvds->encoder, DRM_MODE_DPMS_OFF); + + drm_panel_detach(lvds->panel); + + drm_connector_cleanup(&lvds->connector); + drm_encoder_cleanup(&lvds->encoder); + } +} +static const struct component_ops rockchip_lvds_component_ops = { + .bind = rockchip_lvds_bind, + .unbind = rockchip_lvds_unbind, +}; + +static int rockchip_lvds_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rockchip_lvds *lvds; + struct device_node *port, *output_node = NULL; + const struct of_device_id *match; + struct resource *res; + const char *name; + int i, ret; + + if (!dev->of_node) + return -ENODEV; + + lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL); + if (!lvds) + return -ENOMEM; + + lvds->dev = dev; + lvds->suspend = true; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + lvds->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(lvds->regs)) + return PTR_ERR(lvds->regs); + + lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,grf"); + if (IS_ERR(lvds->grf)) { + dev_err(dev, "missing rockchip,grf property\n"); + return PTR_ERR(lvds->grf); + } + + lvds->supplies[0].supply = "avdd1v0"; + lvds->supplies[1].supply = "avdd1v8"; + lvds->supplies[2].supply = "avdd3v3"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(lvds->supplies), + lvds->supplies); + if (ret < 0) + return ret; + + lvds->pclk = devm_clk_get(&pdev->dev, "pclk_lvds"); + if (IS_ERR(lvds->pclk)) { + dev_err(dev, "could not get pclk_lvds\n"); + return PTR_ERR(lvds->pclk); + } + + ret = clk_prepare(lvds->pclk); + if (ret < 0) { + dev_err(dev, "failed to prepare pclk_lvds\n"); + return ret; + } + + match = of_match_node(rockchip_lvds_dt_ids, dev->of_node); + lvds->soc_data = match->data; + + dev_set_drvdata(dev, lvds); + mutex_init(&lvds->suspend_lock); + + if (of_property_read_string(dev->of_node, "rockchip,output", &name)) + /* default set it as output rgb */ + lvds->output = DISPLAY_OUTPUT_RGB; + else + lvds->output = lvds_name_to_output(name); + + if (of_property_read_string(dev->of_node, "rockchip,data-mapping", + &name)) + /* default set it as format jeida */ + lvds->format = LVDS_FORMAT_JEIDA; + else + lvds->format = lvds_name_to_format(name); + + if (of_property_read_u32(dev->of_node, "rockchip,data-width", &i)) { + lvds->format |= LVDS_24BIT; + } else { + if (i == 24) { + lvds->format |= LVDS_24BIT; + } else if (i == 18) { + lvds->format |= LVDS_18BIT; + } else { + dev_err(&pdev->dev, + "rockchip-lvds unsupport data-width[%d]\n", i); + ret = -EINVAL; + goto err_unprepare_pclk; + } + } + + port = of_graph_get_port_by_id(dev->of_node, 1); + if (port) { + struct device_node *endpoint; + + endpoint = of_get_child_by_name(port, "endpoint"); + if (endpoint) { + output_node = of_graph_get_remote_port_parent(endpoint); + of_node_put(endpoint); + } + } + + if (!output_node) { + dev_err(&pdev->dev, "no output defined\n"); + return -EINVAL; + } + + lvds->panel = of_drm_find_panel(output_node); + of_node_put(output_node); + if (!lvds->panel) { + dev_err(&pdev->dev, "panel not found\n"); + return -EPROBE_DEFER; + } + + return component_add(&pdev->dev, &rockchip_lvds_component_ops); + +err_unprepare_pclk: + clk_unprepare(lvds->pclk); + return ret; +} + +static int rockchip_lvds_remove(struct platform_device *pdev) +{ + struct rockchip_lvds *lvds = dev_get_drvdata(&pdev->dev); + + component_del(&pdev->dev, &rockchip_lvds_component_ops); + + clk_unprepare(lvds->pclk); + + return 0; +} + +struct platform_driver rockchip_lvds_driver = { + .probe = rockchip_lvds_probe, + .remove = rockchip_lvds_remove, + .driver = { + .name = "rockchip-lvds", + .of_match_table = of_match_ptr(rockchip_lvds_dt_ids), + }, +}; +module_platform_driver(rockchip_lvds_driver); + +MODULE_AUTHOR("Mark Yao mark.yao@rock-chips.com"); +MODULE_AUTHOR("Heiko Stuebner heiko@sntech.de"); +MODULE_DESCRIPTION("ROCKCHIP LVDS Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.h b/drivers/gpu/drm/rockchip/rockchip_lvds.h new file mode 100644 index 0000000..9b59d87 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.h @@ -0,0 +1,107 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author: + * hjc hjc@rock-chips.com + * mark yao mark.yao@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_LVDS_ +#define _ROCKCHIP_LVDS_ + +#define RK3288_LVDS_CH0_REG0 0x00 +#define RK3288_LVDS_CH0_REG0_LVDS_EN BIT(7) +#define RK3288_LVDS_CH0_REG0_TTL_EN BIT(6) +#define RK3288_LVDS_CH0_REG0_LANECK_EN BIT(5) +#define RK3288_LVDS_CH0_REG0_LANE4_EN BIT(4) +#define RK3288_LVDS_CH0_REG0_LANE3_EN BIT(3) +#define RK3288_LVDS_CH0_REG0_LANE2_EN BIT(2) +#define RK3288_LVDS_CH0_REG0_LANE1_EN BIT(1) +#define RK3288_LVDS_CH0_REG0_LANE0_EN BIT(0) + +#define RK3288_LVDS_CH0_REG1 0x04 +#define RK3288_LVDS_CH0_REG1_LANECK_BIAS BIT(5) +#define RK3288_LVDS_CH0_REG1_LANE4_BIAS BIT(4) +#define RK3288_LVDS_CH0_REG1_LANE3_BIAS BIT(3) +#define RK3288_LVDS_CH0_REG1_LANE2_BIAS BIT(2) +#define RK3288_LVDS_CH0_REG1_LANE1_BIAS BIT(1) +#define RK3288_LVDS_CH0_REG1_LANE0_BIAS BIT(0) + +#define RK3288_LVDS_CH0_REG2 0x08 +#define RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE BIT(6) +#define RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE BIT(5) +#define RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE BIT(4) +#define RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE BIT(3) +#define RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE BIT(2) +#define RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE BIT(1) +#define RK3288_LVDS_CH0_REG2_PLL_FBDIV8 BIT(0) + +#define RK3288_LVDS_CH0_REG3 0x0c +#define RK3288_LVDS_CH0_REG3_PLL_FBDIV_MASK 0xff + +#define RK3288_LVDS_CH0_REG4 0x10 +#define RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE BIT(5) +#define RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE BIT(4) +#define RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE BIT(3) +#define RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE BIT(2) +#define RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE BIT(1) +#define RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE BIT(0) + +#define RK3288_LVDS_CH0_REG5 0x14 +#define RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA BIT(5) +#define RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA BIT(4) +#define RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA BIT(3) +#define RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA BIT(2) +#define RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA BIT(1) +#define RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA BIT(0) + +#define RK3288_LVDS_CFG_REGC 0x30 +#define RK3288_LVDS_CFG_REGC_PLL_ENABLE 0x00 +#define RK3288_LVDS_CFG_REGC_PLL_DISABLE 0xff + +#define RK3288_LVDS_CH0_REGD 0x34 +#define RK3288_LVDS_CH0_REGD_PLL_PREDIV_MASK 0x1f + +#define RK3288_LVDS_CH0_REG20 0x80 +#define RK3288_LVDS_CH0_REG20_MSB 0x45 +#define RK3288_LVDS_CH0_REG20_LSB 0x44 + +#define RK3288_LVDS_CFG_REG21 0x84 +#define RK3288_LVDS_CFG_REG21_TX_ENABLE 0x92 +#define RK3288_LVDS_CFG_REG21_TX_DISABLE 0x00 + +/* fbdiv value is split over 2 registers, with bit8 in reg2 */ +#define RK3288_LVDS_PLL_FBDIV_REG2(_fbd) \ + (_fbd & BIT(8) ? RK3288_LVDS_CH0_REG2_PLL_FBDIV8 : 0) +#define RK3288_LVDS_PLL_FBDIV_REG3(_fbd) \ + (_fbd & RK3288_LVDS_CH0_REG3_PLL_FBDIV_MASK) +#define RK3288_LVDS_PLL_PREDIV_REGD(_pd) \ + (_pd & RK3288_LVDS_CH0_REGD_PLL_PREDIV_MASK) + +#define RK3288_LVDS_SOC_CON6_SEL_VOP_LIT BIT(3) + +#define LVDS_FMT_MASK (0x07 << 16) +#define LVDS_MSB (0x01 << 3) +#define LVDS_DUAL (0x01 << 4) +#define LVDS_FMT_1 (0x01 << 5) +#define LVDS_TTL_EN (0x01 << 6) +#define LVDS_START_PHASE_RST_1 (0x01 << 7) +#define LVDS_DCLK_INV (0x01 << 8) +#define LVDS_CH0_EN (0x01 << 11) +#define LVDS_CH1_EN (0x01 << 12) +#define LVDS_PWRDN (0x01 << 15) + +#define LVDS_24BIT (0 << 1) +#define LVDS_18BIT (1 << 1) +#define LVDS_FORMAT_VESA (0 << 0) +#define LVDS_FORMAT_JEIDA (1 << 0) + +#endif /* _ROCKCHIP_LVDS_ */