| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2022 Joel Selvaraj <jo@jsfamily.in> |
| * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: |
| * Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/regulator/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> |
| |
| static const char * const regulator_names[] = { |
| "vddio", |
| "vddpos", |
| "vddneg", |
| }; |
| |
| static const unsigned long regulator_enable_loads[] = { |
| 62000, |
| 100000, |
| 100000 |
| }; |
| |
| struct ebbg_ft8719 { |
| struct drm_panel panel; |
| struct mipi_dsi_device *dsi; |
| |
| struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)]; |
| |
| struct gpio_desc *reset_gpio; |
| }; |
| |
| static inline |
| struct ebbg_ft8719 *to_ebbg_ft8719(struct drm_panel *panel) |
| { |
| return container_of(panel, struct ebbg_ft8719, panel); |
| } |
| |
| static void ebbg_ft8719_reset(struct ebbg_ft8719 *ctx) |
| { |
| gpiod_set_value_cansleep(ctx->reset_gpio, 0); |
| usleep_range(4000, 5000); |
| gpiod_set_value_cansleep(ctx->reset_gpio, 1); |
| usleep_range(1000, 2000); |
| gpiod_set_value_cansleep(ctx->reset_gpio, 0); |
| usleep_range(15000, 16000); |
| } |
| |
| static int ebbg_ft8719_on(struct ebbg_ft8719 *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_brightness(dsi, 0x00ff); |
| if (ret < 0) { |
| dev_err(dev, "Failed to set display brightness: %d\n", ret); |
| return ret; |
| } |
| |
| mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24); |
| mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00); |
| |
| 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(90); |
| |
| 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 ebbg_ft8719_off(struct ebbg_ft8719 *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; |
| } |
| usleep_range(10000, 11000); |
| |
| 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(90); |
| |
| return 0; |
| } |
| |
| static int ebbg_ft8719_prepare(struct drm_panel *panel) |
| { |
| struct ebbg_ft8719 *ctx = to_ebbg_ft8719(panel); |
| struct device *dev = &ctx->dsi->dev; |
| int ret; |
| |
| ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); |
| if (ret < 0) |
| return ret; |
| |
| ebbg_ft8719_reset(ctx); |
| |
| ret = ebbg_ft8719_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 ebbg_ft8719_unprepare(struct drm_panel *panel) |
| { |
| struct ebbg_ft8719 *ctx = to_ebbg_ft8719(panel); |
| struct device *dev = &ctx->dsi->dev; |
| int ret; |
| |
| ret = ebbg_ft8719_off(ctx); |
| if (ret < 0) |
| dev_err(dev, "Failed to un-initialize panel: %d\n", ret); |
| |
| gpiod_set_value_cansleep(ctx->reset_gpio, 1); |
| |
| ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); |
| if (ret) |
| dev_err(panel->dev, "Failed to disable regulators: %d\n", ret); |
| |
| return 0; |
| } |
| |
| static const struct drm_display_mode ebbg_ft8719_mode = { |
| .clock = (1080 + 28 + 4 + 16) * (2246 + 120 + 4 + 12) * 60 / 1000, |
| .hdisplay = 1080, |
| .hsync_start = 1080 + 28, |
| .hsync_end = 1080 + 28 + 4, |
| .htotal = 1080 + 28 + 4 + 16, |
| .vdisplay = 2246, |
| .vsync_start = 2246 + 120, |
| .vsync_end = 2246 + 120 + 4, |
| .vtotal = 2246 + 120 + 4 + 12, |
| .width_mm = 68, |
| .height_mm = 141, |
| }; |
| |
| static int ebbg_ft8719_get_modes(struct drm_panel *panel, |
| struct drm_connector *connector) |
| { |
| struct drm_display_mode *mode; |
| |
| mode = drm_mode_duplicate(connector->dev, &ebbg_ft8719_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 ebbg_ft8719_panel_funcs = { |
| .prepare = ebbg_ft8719_prepare, |
| .unprepare = ebbg_ft8719_unprepare, |
| .get_modes = ebbg_ft8719_get_modes, |
| }; |
| |
| static int ebbg_ft8719_probe(struct mipi_dsi_device *dsi) |
| { |
| struct device *dev = &dsi->dev; |
| struct ebbg_ft8719 *ctx; |
| int i, ret; |
| |
| ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); |
| if (!ctx) |
| return -ENOMEM; |
| |
| for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) |
| ctx->supplies[i].supply = regulator_names[i]; |
| |
| ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), |
| ctx->supplies); |
| if (ret < 0) |
| return dev_err_probe(dev, ret, "Failed to get regulators\n"); |
| |
| for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) { |
| ret = regulator_set_load(ctx->supplies[i].consumer, |
| regulator_enable_loads[i]); |
| if (ret) |
| return dev_err_probe(dev, ret, |
| "Failed to set regulator load\n"); |
| } |
| |
| 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 | MIPI_DSI_MODE_VIDEO_BURST | |
| MIPI_DSI_CLOCK_NON_CONTINUOUS; |
| |
| drm_panel_init(&ctx->panel, dev, &ebbg_ft8719_panel_funcs, |
| DRM_MODE_CONNECTOR_DSI); |
| |
| ret = drm_panel_of_backlight(&ctx->panel); |
| if (ret) |
| return dev_err_probe(dev, ret, "Failed to get 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 int ebbg_ft8719_remove(struct mipi_dsi_device *dsi) |
| { |
| struct ebbg_ft8719 *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 ebbg_ft8719_of_match[] = { |
| { .compatible = "ebbg,ft8719" }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, ebbg_ft8719_of_match); |
| |
| static struct mipi_dsi_driver ebbg_ft8719_driver = { |
| .probe = ebbg_ft8719_probe, |
| .remove = ebbg_ft8719_remove, |
| .driver = { |
| .name = "panel-ebbg-ft8719", |
| .of_match_table = ebbg_ft8719_of_match, |
| }, |
| }; |
| module_mipi_dsi_driver(ebbg_ft8719_driver); |
| |
| MODULE_AUTHOR("Joel Selvaraj <jo@jsfamily.in>"); |
| MODULE_DESCRIPTION("DRM driver for EBBG FT8719 video dsi panel"); |
| MODULE_LICENSE("GPL v2"); |