257 lines
6.6 KiB
C
257 lines
6.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for the Samsung S6E3FA7 panel.
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*
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* Copyright (c) 2022-2024, The Linux Foundation. All rights reserved.
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* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
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* Copyright (c) 2013, 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 <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 s6e3fa7_panel {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct gpio_desc *reset_gpio;
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};
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static inline struct s6e3fa7_panel *to_s6e3fa7_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct s6e3fa7_panel, panel);
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}
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static void s6e3fa7_panel_reset(struct s6e3fa7_panel *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(1000, 2000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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}
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static int s6e3fa7_panel_on(struct mipi_dsi_device *dsi)
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{
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 120);
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mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x5a, 0x5a);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4,
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0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0,
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0x00, 0xb4, 0x37, 0x70, 0x79, 0x69);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xa5, 0xa5);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
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mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
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return dsi_ctx.accum_err;
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}
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static int s6e3fa7_panel_prepare(struct drm_panel *panel)
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{
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struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
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int ret;
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s6e3fa7_panel_reset(ctx);
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ret = s6e3fa7_panel_on(ctx->dsi);
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if (ret < 0)
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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return ret;
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}
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static int s6e3fa7_panel_unprepare(struct drm_panel *panel)
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{
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struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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return 0;
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}
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static int s6e3fa7_panel_disable(struct drm_panel *panel)
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{
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struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
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mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 120);
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return dsi_ctx.accum_err;
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}
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static const struct drm_display_mode s6e3fa7_panel_mode = {
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.clock = (1080 + 32 + 32 + 78) * (2220 + 32 + 4 + 78) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 32,
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.hsync_end = 1080 + 32 + 32,
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.htotal = 1080 + 32 + 32 + 78,
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.vdisplay = 2220,
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.vsync_start = 2220 + 32,
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.vsync_end = 2220 + 32 + 4,
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.vtotal = 2220 + 32 + 4 + 78,
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.width_mm = 62,
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.height_mm = 127,
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};
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static int s6e3fa7_panel_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, &s6e3fa7_panel_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 s6e3fa7_panel_funcs = {
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.prepare = s6e3fa7_panel_prepare,
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.unprepare = s6e3fa7_panel_unprepare,
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.disable = s6e3fa7_panel_disable,
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.get_modes = s6e3fa7_panel_get_modes,
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};
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static int s6e3fa7_panel_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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ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int s6e3fa7_panel_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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ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness);
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if (ret < 0)
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return ret;
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return brightness;
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}
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static const struct backlight_ops s6e3fa7_panel_bl_ops = {
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.update_status = s6e3fa7_panel_bl_update_status,
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.get_brightness = s6e3fa7_panel_bl_get_brightness,
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};
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static struct backlight_device *
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s6e3fa7_panel_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 = 1023,
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.max_brightness = 1023,
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};
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&s6e3fa7_panel_bl_ops, &props);
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}
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static int s6e3fa7_panel_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct s6e3fa7_panel *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->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 |
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MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
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drm_panel_init(&ctx->panel, dev, &s6e3fa7_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ctx->panel.prepare_prev_first = true;
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ctx->panel.backlight = s6e3fa7_panel_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 s6e3fa7_panel_remove(struct mipi_dsi_device *dsi)
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{
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struct s6e3fa7_panel *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 s6e3fa7_panel_of_match[] = {
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{ .compatible = "samsung,s6e3fa7-ams559nk06" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, s6e3fa7_panel_of_match);
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static struct mipi_dsi_driver s6e3fa7_panel_driver = {
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.probe = s6e3fa7_panel_probe,
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.remove = s6e3fa7_panel_remove,
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.driver = {
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.name = "panel-samsung-s6e3fa7",
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.of_match_table = s6e3fa7_panel_of_match,
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},
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};
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module_mipi_dsi_driver(s6e3fa7_panel_driver);
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MODULE_AUTHOR("Richard Acayan <mailingradian@gmail.com>");
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MODULE_DESCRIPTION("DRM driver for Samsung S6E3FA7 command mode DSI panel");
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MODULE_LICENSE("GPL");
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