--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct tm5p5_nt35596 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct regulator_bulk_data supplies[2];
+ struct gpio_desc *reset_gpio;
+ bool prepared;
+};
+
+static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel)
+{
+ return container_of(panel, struct tm5p5_nt35596, panel);
+}
+
+#define dsi_generic_write_seq(dsi, seq...) do { \
+ static const u8 d[] = { seq }; \
+ int ret; \
+ ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+#define dsi_dcs_write_seq(dsi, seq...) do { \
+ static const u8 d[] = { seq }; \
+ int ret; \
+ ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+static void tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(15000, 16000);
+}
+
+static int tm5p5_nt35596_on(struct tm5p5_nt35596 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+
+ dsi_generic_write_seq(dsi, 0xff, 0x05);
+ dsi_generic_write_seq(dsi, 0xfb, 0x01);
+ dsi_generic_write_seq(dsi, 0xc5, 0x31);
+ dsi_generic_write_seq(dsi, 0xff, 0x04);
+ dsi_generic_write_seq(dsi, 0x01, 0x84);
+ dsi_generic_write_seq(dsi, 0x05, 0x25);
+ dsi_generic_write_seq(dsi, 0x06, 0x01);
+ dsi_generic_write_seq(dsi, 0x07, 0x20);
+ dsi_generic_write_seq(dsi, 0x08, 0x06);
+ dsi_generic_write_seq(dsi, 0x09, 0x08);
+ dsi_generic_write_seq(dsi, 0x0a, 0x10);
+ dsi_generic_write_seq(dsi, 0x0b, 0x10);
+ dsi_generic_write_seq(dsi, 0x0c, 0x10);
+ dsi_generic_write_seq(dsi, 0x0d, 0x14);
+ dsi_generic_write_seq(dsi, 0x0e, 0x14);
+ dsi_generic_write_seq(dsi, 0x0f, 0x14);
+ dsi_generic_write_seq(dsi, 0x10, 0x14);
+ dsi_generic_write_seq(dsi, 0x11, 0x14);
+ dsi_generic_write_seq(dsi, 0x12, 0x14);
+ dsi_generic_write_seq(dsi, 0x17, 0xf3);
+ dsi_generic_write_seq(dsi, 0x18, 0xc0);
+ dsi_generic_write_seq(dsi, 0x19, 0xc0);
+ dsi_generic_write_seq(dsi, 0x1a, 0xc0);
+ dsi_generic_write_seq(dsi, 0x1b, 0xb3);
+ dsi_generic_write_seq(dsi, 0x1c, 0xb3);
+ dsi_generic_write_seq(dsi, 0x1d, 0xb3);
+ dsi_generic_write_seq(dsi, 0x1e, 0xb3);
+ dsi_generic_write_seq(dsi, 0x1f, 0xb3);
+ dsi_generic_write_seq(dsi, 0x20, 0xb3);
+ dsi_generic_write_seq(dsi, 0xfb, 0x01);
+ dsi_generic_write_seq(dsi, 0xff, 0x00);
+ dsi_generic_write_seq(dsi, 0xfb, 0x01);
+ dsi_generic_write_seq(dsi, 0x35, 0x01);
+ dsi_generic_write_seq(dsi, 0xd3, 0x06);
+ dsi_generic_write_seq(dsi, 0xd4, 0x04);
+ dsi_generic_write_seq(dsi, 0x5e, 0x0d);
+ dsi_generic_write_seq(dsi, 0x11, 0x00);
+ msleep(100);
+ dsi_generic_write_seq(dsi, 0x29, 0x00);
+ dsi_generic_write_seq(dsi, 0x53, 0x24);
+
+ return 0;
+}
+
+static int tm5p5_nt35596_off(struct tm5p5_nt35596 *ctx)
+{
+ 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;
+ }
+ msleep(60);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+
+ dsi_dcs_write_seq(dsi, 0x4f, 0x01);
+
+ return 0;
+}
+
+static int tm5p5_nt35596_prepare(struct drm_panel *panel)
+{
+ struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ tm5p5_nt35596_reset(ctx);
+
+ ret = tm5p5_nt35596_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ return ret;
+ }
+
+ ctx->prepared = true;
+ return 0;
+}
+
+static int tm5p5_nt35596_unprepare(struct drm_panel *panel)
+{
+ struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = tm5p5_nt35596_off(ctx);
+ if (ret < 0)
+ dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+
+ ctx->prepared = false;
+ return 0;
+}
+
+static const struct drm_display_mode tm5p5_nt35596_mode = {
+ .clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 100,
+ .hsync_end = 1080 + 100 + 8,
+ .htotal = 1080 + 100 + 8 + 16,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 4,
+ .vsync_end = 1920 + 4 + 2,
+ .vtotal = 1920 + 4 + 2 + 4,
+ .vrefresh = 60,
+ .width_mm = 68,
+ .height_mm = 121,
+};
+
+static int tm5p5_nt35596_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_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 tm5p5_nt35596_panel_funcs = {
+ .prepare = tm5p5_nt35596_prepare,
+ .unprepare = tm5p5_nt35596_unprepare,
+ .get_modes = tm5p5_nt35596_get_modes,
+};
+
+static int tm5p5_nt35596_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = bl->props.brightness;
+ int ret;
+
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK ||
+ bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ return 0;
+}
+
+static int tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = bl->props.brightness;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ return brightness & 0xff;
+}
+
+static const struct backlight_ops tm5p5_nt35596_bl_ops = {
+ .update_status = tm5p5_nt35596_bl_update_status,
+ .get_brightness = tm5p5_nt35596_bl_get_brightness,
+};
+
+static struct backlight_device *
+tm5p5_nt35596_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 255,
+ .max_brightness = 255,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &tm5p5_nt35596_bl_ops, &props);
+}
+
+static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct tm5p5_nt35596 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supplies[0].supply = "vdd";
+ ctx->supplies[1].supply = "vddio";
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to get regulators: %d\n", ret);
+ return ret;
+ }
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset_gpio)) {
+ ret = PTR_ERR(ctx->reset_gpio);
+ dev_err(dev, "Failed to get reset-gpios: %d\n", ret);
+ return ret;
+ }
+
+ 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 | MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_EOT_PACKET |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
+
+ drm_panel_init(&ctx->panel, dev, &tm5p5_nt35596_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight)) {
+ ret = PTR_ERR(ctx->panel.backlight);
+ dev_err(dev, "Failed to create backlight: %d\n", ret);
+ return ret;
+ }
+
+ ret = drm_panel_add(&ctx->panel);
+ if (ret < 0) {
+ dev_err(dev, "Failed to add panel: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tm5p5_nt35596_remove(struct mipi_dsi_device *dsi)
+{
+ struct tm5p5_nt35596 *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);
+
+ return 0;
+}
+
+static const struct of_device_id tm5p5_nt35596_of_match[] = {
+ { .compatible = "asus,z00t-tm5p5-n35596" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match);
+
+static struct mipi_dsi_driver tm5p5_nt35596_driver = {
+ .probe = tm5p5_nt35596_probe,
+ .remove = tm5p5_nt35596_remove,
+ .driver = {
+ .name = "panel-tm5p5-nt35596",
+ .of_match_table = tm5p5_nt35596_of_match,
+ },
+};
+module_mipi_dsi_driver(tm5p5_nt35596_driver);
+
+MODULE_AUTHOR("Konrad Dybcio <konradybcio@gmail.com>");
+MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel");
+MODULE_LICENSE("GPL v2");
projects / platform / kernel / linux-starfive.git / commitdiff