drm/panel: Add panel driver for Samsung S6E3FA5
The S6E3FA5 is 5.5" 1080x1920 MIPI DSI command mode AMOLED LCD display found on OnePlus 5 (2017) smartphones. The panel needs to be enabled from a device tree using the "samsung,s6e3fa5" compatible. This driver was generated using the following & includes some minor cleanup (such as s/to_s6e3fa5/to_s6e3fa5_panel/g): $ python3 lmdpdg.py cheeseburger.dtb -r vddio Signed-off-by: Jami Kettunen <jami.kettunen@protonmail.com>
This commit is contained in:
Jami Kettunen
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3 changed files with 354 additions and 0 deletions
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@ -484,6 +484,21 @@ config DRM_PANEL_SAMSUNG_S6D27A1
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This panel can be found in Samsung Galaxy Ace 2
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GT-I8160 mobile phone.
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config DRM_PANEL_SAMSUNG_S6E3FA5
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tristate "Samsung S6E3FA5 DSI command mode panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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select VIDEOMODE_HELPERS
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help
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Say Y here if you want to enable support for Samsung S6E3FA5 AMOLED
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command mode panel as found in OnePlus 5 (2017) devices. The panel has a
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FHD (1080x1920) resolution and uses 24 bit RGB per pixel. It provides a
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MIPI DSI interface to the host and has a built-in LED backlight.
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To compile this driver as a module, choose M here: the module
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will be called panel-samsung-s6e3fa5.
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config DRM_PANEL_SAMSUNG_S6E3HA2
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tristate "Samsung S6E3HA2 DSI video mode panel"
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depends on OF
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@ -47,6 +47,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D27A1) += panel-samsung-s6d27a1.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3FA5) += panel-samsung-s6e3fa5.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0) += panel-samsung-s6e63m0.o
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338
drivers/gpu/drm/panel/panel-samsung-s6e3fa5.c
Normal file
338
drivers/gpu/drm/panel/panel-samsung-s6e3fa5.c
Normal file
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@ -0,0 +1,338 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2021 Jami Kettunen <jami.kettunen@protonmail.com>
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* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree
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* Copyright (c) 2021, The Linux Foundation. All rights reserved.
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*/
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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struct s6e3fa5 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct regulator *supply;
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struct gpio_desc *reset_gpio;
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bool prepared;
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};
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static inline struct s6e3fa5 *to_s6e3fa5_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct s6e3fa5, panel);
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}
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#define dsi_dcs_write_seq(dsi, seq...) do { \
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static const u8 d[] = { seq }; \
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int ret; \
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ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
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if (ret < 0) \
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return ret; \
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} while (0)
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static void s6e3fa5_reset(struct s6e3fa5 *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(2000, 3000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(2000, 3000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(2000, 3000);
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}
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static int s6e3fa5_on(struct s6e3fa5 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
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return ret;
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}
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msleep(20);
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ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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if (ret < 0) {
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dev_err(dev, "Failed to set tear on: %d\n", ret);
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return ret;
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}
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dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
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dsi_dcs_write_seq(dsi, 0xb0, 0x04);
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dsi_dcs_write_seq(dsi, 0xb4, 0x06, 0x0c, 0x12);
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dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
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dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
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dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
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dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
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dsi_dcs_write_seq(dsi, 0xc3, 0x01);
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dsi_dcs_write_seq(dsi, 0xb0, 0x18);
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dsi_dcs_write_seq(dsi, 0xc3, 0x00);
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dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display on: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int s6e3fa5_off(struct s6e3fa5 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display off: %d\n", ret);
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return ret;
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}
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msleep(40);
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
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return ret;
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}
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msleep(160);
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return 0;
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}
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static int s6e3fa5_prepare(struct drm_panel *panel)
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{
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struct s6e3fa5 *ctx = to_s6e3fa5_panel(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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if (ctx->prepared)
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return 0;
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ret = regulator_enable(ctx->supply);
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if (ret < 0) {
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dev_err(dev, "Failed to enable regulator: %d\n", ret);
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return ret;
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}
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s6e3fa5_reset(ctx);
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ret = s6e3fa5_on(ctx);
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if (ret < 0) {
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dev_err(dev, "Failed to initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_disable(ctx->supply);
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return ret;
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}
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ctx->prepared = true;
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return 0;
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}
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static int s6e3fa5_unprepare(struct drm_panel *panel)
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{
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struct s6e3fa5 *ctx = to_s6e3fa5_panel(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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if (!ctx->prepared)
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return 0;
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ret = s6e3fa5_off(ctx);
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if (ret < 0)
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dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_disable(ctx->supply);
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ctx->prepared = false;
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return 0;
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}
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static const struct drm_display_mode s6e3fa5_mode = {
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.clock = (1080 + 120 + 19 + 70) * (1920 + 18 + 2 + 4) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 120,
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.hsync_end = 1080 + 120 + 19,
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.htotal = 1080 + 120 + 19 + 70,
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.vdisplay = 1920,
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.vsync_start = 1920 + 18,
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.vsync_end = 1920 + 18 + 2,
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.vtotal = 1920 + 18 + 2 + 4,
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.width_mm = 68,
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.height_mm = 122,
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};
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static int s6e3fa5_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(connector->dev, &s6e3fa5_mode);
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if (!mode)
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return -ENOMEM;
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drm_mode_set_name(mode);
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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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connector->display_info.width_mm = mode->width_mm;
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connector->display_info.height_mm = mode->height_mm;
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drm_mode_probed_add(connector, mode);
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return 1;
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}
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static const struct drm_panel_funcs s6e3fa5_panel_funcs = {
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.prepare = s6e3fa5_prepare,
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.unprepare = s6e3fa5_unprepare,
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.get_modes = s6e3fa5_get_modes,
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};
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static int s6e3fa5_bl_update_status(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness = backlight_get_brightness(bl);
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return 0;
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}
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static int s6e3fa5_bl_get_brightness(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness;
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return brightness & 0xff;
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}
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static const struct backlight_ops s6e3fa5_bl_ops = {
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.update_status = s6e3fa5_bl_update_status,
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.get_brightness = s6e3fa5_bl_get_brightness,
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};
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static struct backlight_device *
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s6e3fa5_create_backlight(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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const struct backlight_properties props = {
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.type = BACKLIGHT_RAW,
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.brightness = 255,
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.max_brightness = 255,
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};
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&s6e3fa5_bl_ops, &props);
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}
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static int s6e3fa5_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct s6e3fa5 *ctx;
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int ret;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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ctx->supply = devm_regulator_get(dev, "vddio");
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if (IS_ERR(ctx->supply))
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return dev_err_probe(dev, PTR_ERR(ctx->supply),
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"Failed to get vddio regulator\n");
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(ctx->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
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"Failed to get reset-gpios\n");
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ctx->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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dsi->lanes = 4;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_HSE |
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MIPI_DSI_MODE_NO_EOT_PACKET |
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MIPI_DSI_CLOCK_NON_CONTINUOUS;
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drm_panel_init(&ctx->panel, dev, &s6e3fa5_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ctx->panel.backlight = s6e3fa5_create_backlight(dsi);
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if (IS_ERR(ctx->panel.backlight))
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return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
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"Failed to create backlight\n");
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drm_panel_add(&ctx->panel);
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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return ret;
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}
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return 0;
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}
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static void s6e3fa5_remove(struct mipi_dsi_device *dsi)
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{
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struct s6e3fa5 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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}
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static const struct of_device_id s6e3fa5_of_match[] = {
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{ .compatible = "samsung,s6e3fa5" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, s6e3fa5_of_match);
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static struct mipi_dsi_driver s6e3fa5_driver = {
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.probe = s6e3fa5_probe,
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.remove = s6e3fa5_remove,
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.driver = {
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.name = "panel-samsung-s6e3fa5",
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.of_match_table = s6e3fa5_of_match,
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},
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};
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module_mipi_dsi_driver(s6e3fa5_driver);
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MODULE_AUTHOR("Jami Kettunen <jami.kettunen@protonmail.com>");
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MODULE_DESCRIPTION("DRM driver for Samsung S6E3FA5 AMOLED DSI cmd mode panel found on OnePlus 5 phones");
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MODULE_LICENSE("GPL v2");
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