+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ */ > +
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct s6e3fa7_panel {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct gpio_desc *reset_gpio;
+};
+
+static inline struct s6e3fa7_panel *to_s6e3fa7_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct s6e3fa7_panel, panel);
+}
+
+static void s6e3fa7_panel_reset(struct s6e3fa7_panel *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(10000, 11000);
+}
+
+static int s6e3fa7_panel_on(struct s6e3fa7_panel *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set tear on: %d\n", ret);
+ return ret;
+ }
+
+ mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
+ mipi_dsi_dcs_write_seq(dsi, 0xf4,
+ 0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0,
+ 0x00, 0xb4, 0x37, 0x70, 0x79, 0x69);
+ mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
+ mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display on: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int s6e3fa7_panel_prepare(struct drm_panel *panel)
+{
+ struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ s6e3fa7_panel_reset(ctx);
+
+ ret = s6e3fa7_panel_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int s6e3fa7_panel_unprepare(struct drm_panel *panel)
+{
+ struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+ return 0;
+}
+
+static int s6e3fa7_panel_disable(struct drm_panel *panel)
+{
+ struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display off: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ return 0;
+}
+
+static const struct drm_display_mode s6e3fa7_panel_mode = {
+ .clock = (1080 + 32 + 32 + 78) * (2220 + 32 + 4 + 78) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 32,
+ .hsync_end = 1080 + 32 + 32,
+ .htotal = 1080 + 32 + 32 + 78,
+ .vdisplay = 2220,
+ .vsync_start = 2220 + 32,
+ .vsync_end = 2220 + 32 + 4,
+ .vtotal = 2220 + 32 + 4 + 78,
+ .width_mm = 62,
+ .height_mm = 127,
+};
+
+static int s6e3fa7_panel_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &s6e3fa7_panel_mode);
+ if (!mode)
+ return -ENOMEM;
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+ drm_mode_probed_add(connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs s6e3fa7_panel_funcs = {
+ .prepare = s6e3fa7_panel_prepare,
+ .unprepare = s6e3fa7_panel_unprepare,
+ .disable = s6e3fa7_panel_disable,
+ .get_modes = s6e3fa7_panel_get_modes,
+};
+
+static int s6e3fa7_panel_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = backlight_get_brightness(bl);
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int s6e3fa7_panel_bl_get_brightness(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness;
+ int ret;
+
+ ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness);
+ if (ret < 0)
+ return ret;
+
+ return brightness;
+}
+
+static const struct backlight_ops s6e3fa7_panel_bl_ops = {
+ .update_status = s6e3fa7_panel_bl_update_status,
+ .get_brightness = s6e3fa7_panel_bl_get_brightness,
+};
+
+static struct backlight_device *
+s6e3fa7_panel_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 1023,
+ .max_brightness = 1023,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &s6e3fa7_panel_bl_ops, &props);
+}
+
+static int s6e3fa7_panel_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct s6e3fa7_panel *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
+
+ drm_panel_init(&ctx->panel, dev, &s6e3fa7_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ ctx->panel.prepare_prev_first = true;
+
+ ctx->panel.backlight = s6e3fa7_panel_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+ "Failed to create backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void s6e3fa7_panel_remove(struct mipi_dsi_device *dsi)
+{
+ struct s6e3fa7_panel *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id s6e3fa7_panel_of_match[] = {
+ { .compatible = "samsung,s6e3fa7-ams559nk06" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, s6e3fa7_panel_of_match);
+
+static struct mipi_dsi_driver s6e3fa7_panel_driver = {
+ .probe = s6e3fa7_panel_probe,
+ .remove = s6e3fa7_panel_remove,
+ .driver = {
+ .name = "panel-samsung-s6e3fa7",
+ .of_match_table = s6e3fa7_panel_of_match,
+ },
+};
+module_mipi_dsi_driver(s6e3fa7_panel_driver);
+
+MODULE_AUTHOR("Richard Acayan <mailingradian@xxxxxxxxx>");
+MODULE_DESCRIPTION("DRM driver for Samsung S6E3FA7 command mode DSI panel");
+MODULE_LICENSE("GPL");
--
2.43.0
