--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech>
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/swab.h>
+#include <linux/backlight.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct sofef00_panel {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct regulator *supply;
+ struct gpio_desc *reset_gpio;
+ const struct drm_display_mode *mode;
+ bool prepared;
+};
+
+static inline
+struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct sofef00_panel, panel);
+}
+
+#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 sofef00_panel_reset(struct sofef00_panel *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(2000, 3000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(12000, 13000);
+}
+
+static int sofef00_panel_on(struct sofef00_panel *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ usleep_range(10000, 11000);
+
+ dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
+
+ 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;
+ }
+
+ dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
+ dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
+ dsi_dcs_write_seq(dsi, 0xb0, 0x07);
+ dsi_dcs_write_seq(dsi, 0xb6, 0x12);
+ dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
+ dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+ dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+
+ 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 sofef00_panel_off(struct sofef00_panel *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ 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(40);
+
+ 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(160);
+
+ return 0;
+}
+
+static int sofef00_panel_prepare(struct drm_panel *panel)
+{
+ struct sofef00_panel *ctx = to_sofef00_panel(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ ret = regulator_enable(ctx->supply);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulator: %d\n", ret);
+ return ret;
+ }
+
+ sofef00_panel_reset(ctx);
+
+ ret = sofef00_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;
+ }
+
+ ctx->prepared = true;
+ return 0;
+}
+
+static int sofef00_panel_unprepare(struct drm_panel *panel)
+{
+ struct sofef00_panel *ctx = to_sofef00_panel(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = sofef00_panel_off(ctx);
+ if (ret < 0)
+ dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+ regulator_disable(ctx->supply);
+
+ ctx->prepared = false;
+ return 0;
+}
+
+static const struct drm_display_mode enchilada_panel_mode = {
+ .clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 112,
+ .hsync_end = 1080 + 112 + 16,
+ .htotal = 1080 + 112 + 16 + 36,
+ .vdisplay = 2280,
+ .vsync_start = 2280 + 36,
+ .vsync_end = 2280 + 36 + 8,
+ .vtotal = 2280 + 36 + 8 + 12,
+ .width_mm = 68,
+ .height_mm = 145,
+};
+
+static const struct drm_display_mode fajita_panel_mode = {
+ .clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 72,
+ .hsync_end = 1080 + 72 + 16,
+ .htotal = 1080 + 72 + 16 + 36,
+ .vdisplay = 2340,
+ .vsync_start = 2340 + 32,
+ .vsync_end = 2340 + 32 + 4,
+ .vtotal = 2340 + 32 + 4 + 18,
+ .width_mm = 68,
+ .height_mm = 145,
+};
+
+static int sofef00_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+ struct sofef00_panel *ctx = to_sofef00_panel(panel);
+
+ mode = drm_mode_duplicate(connector->dev, ctx->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 sofef00_panel_panel_funcs = {
+ .prepare = sofef00_panel_prepare,
+ .unprepare = sofef00_panel_unprepare,
+ .get_modes = sofef00_panel_get_modes,
+};
+
+static int sofef00_panel_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ int err;
+ u16 brightness;
+
+ brightness = (u16)backlight_get_brightness(bl);
+ // This panel needs the high and low bytes swapped for the brightness value
+ brightness = __swab16(brightness);
+
+ err = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static const struct backlight_ops sofef00_panel_bl_ops = {
+ .update_status = sofef00_panel_bl_update_status,
+};
+
+static struct backlight_device *
+sofef00_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_PLATFORM,
+ .brightness = 1023,
+ .max_brightness = 1023,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &sofef00_panel_bl_ops, &props);
+}
+
+static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct sofef00_panel *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->mode = of_device_get_match_data(dev);
+
+ if (!ctx->mode) {
+ dev_err(dev, "Missing device mode\n");
+ return -ENODEV;
+ }
+
+ ctx->supply = devm_regulator_get(dev, "vddio");
+ if (IS_ERR(ctx->supply)) {
+ ret = PTR_ERR(ctx->supply);
+ dev_err(dev, "Failed to get vddio regulator: %d\n", ret);
+ return ret;
+ }
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio)) {
+ ret = PTR_ERR(ctx->reset_gpio);
+ dev_warn(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;
+
+ drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ctx->panel.backlight = sofef00_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);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sofef00_panel_remove(struct mipi_dsi_device *dsi)
+{
+ struct sofef00_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);
+
+ return 0;
+}
+
+static const struct of_device_id sofef00_panel_of_match[] = {
+ { // OnePlus 6 / enchilada
+ .compatible = "samsung,sofef00",
+ .data = &enchilada_panel_mode,
+ },
+ { // OnePlus 6T / fajita
+ .compatible = "samsung,s6e3fc2x01",
+ .data = &fajita_panel_mode,
+ },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sofef00_panel_of_match);
+
+static struct mipi_dsi_driver sofef00_panel_driver = {
+ .probe = sofef00_panel_probe,
+ .remove = sofef00_panel_remove,
+ .driver = {
+ .name = "panel-oneplus6",
+ .of_match_table = sofef00_panel_of_match,
+ },
+};
+
+module_mipi_dsi_driver(sofef00_panel_driver);
+
+MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>");
+MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones");
+MODULE_LICENSE("GPL v2");
projects / platform / kernel / linux-starfive.git / commitdiff