Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
David Wronek | 1727 | 100.00% | 1 | 100.00% |
Total | 1727 | 1 |
// SPDX-License-Identifier: GPL-2.0-only /* * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree. * Copyright (c) 2024 David Wronek <david@mainlining.org> */ #include <linux/backlight.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/regulator/consumer.h> #include <video/mipi_display.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_modes.h> #include <drm/drm_panel.h> #include <drm/drm_probe_helper.h> struct rm69380_panel { struct drm_panel panel; struct mipi_dsi_device *dsi[2]; struct regulator_bulk_data supplies[2]; struct gpio_desc *reset_gpio; }; static inline struct rm69380_panel *to_rm69380_panel(struct drm_panel *panel) { return container_of(panel, struct rm69380_panel, panel); } static void rm69380_reset(struct rm69380_panel *ctx) { gpiod_set_value_cansleep(ctx->reset_gpio, 0); usleep_range(15000, 16000); gpiod_set_value_cansleep(ctx->reset_gpio, 1); usleep_range(10000, 11000); gpiod_set_value_cansleep(ctx->reset_gpio, 0); msleep(30); } static int rm69380_on(struct rm69380_panel *ctx) { struct mipi_dsi_device *dsi = ctx->dsi[0]; struct device *dev = &dsi->dev; int ret; dsi->mode_flags |= MIPI_DSI_MODE_LPM; if (ctx->dsi[1]) ctx->dsi[1]->mode_flags |= MIPI_DSI_MODE_LPM; mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd4); mipi_dsi_dcs_write_seq(dsi, 0x00, 0x80); mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd0); mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00); mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x26); mipi_dsi_dcs_write_seq(dsi, 0x75, 0x3f); mipi_dsi_dcs_write_seq(dsi, 0x1d, 0x1a); mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00); mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28); mipi_dsi_dcs_write_seq(dsi, 0xc2, 0x08); 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; } 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(20); ret = mipi_dsi_dcs_set_display_on(dsi); if (ret < 0) { dev_err(dev, "Failed to set display on: %d\n", ret); return ret; } msleep(36); return 0; } static int rm69380_off(struct rm69380_panel *ctx) { struct mipi_dsi_device *dsi = ctx->dsi[0]; struct device *dev = &dsi->dev; int ret; dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; if (ctx->dsi[1]) ctx->dsi[1]->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(35); 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(20); return 0; } static int rm69380_prepare(struct drm_panel *panel) { struct rm69380_panel *ctx = to_rm69380_panel(panel); struct device *dev = &ctx->dsi[0]->dev; int ret; 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; } rm69380_reset(ctx); ret = rm69380_on(ctx); if (ret < 0) { dev_err(dev, "Failed to initialize panel: %d\n", ret); gpiod_set_value_cansleep(ctx->reset_gpio, 1); regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); return ret; } return 0; } static int rm69380_unprepare(struct drm_panel *panel) { struct rm69380_panel *ctx = to_rm69380_panel(panel); struct device *dev = &ctx->dsi[0]->dev; int ret; ret = rm69380_off(ctx); if (ret < 0) dev_err(dev, "Failed to un-initialize panel: %d\n", ret); gpiod_set_value_cansleep(ctx->reset_gpio, 1); regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); return 0; } static const struct drm_display_mode rm69380_mode = { .clock = (2560 + 32 + 12 + 38) * (1600 + 20 + 4 + 8) * 90 / 1000, .hdisplay = 2560, .hsync_start = 2560 + 32, .hsync_end = 2560 + 32 + 12, .htotal = 2560 + 32 + 12 + 38, .vdisplay = 1600, .vsync_start = 1600 + 20, .vsync_end = 1600 + 20 + 4, .vtotal = 1600 + 20 + 4 + 8, .width_mm = 248, .height_mm = 155, .type = DRM_MODE_TYPE_DRIVER, }; static int rm69380_get_modes(struct drm_panel *panel, struct drm_connector *connector) { return drm_connector_helper_get_modes_fixed(connector, &rm69380_mode); } static const struct drm_panel_funcs rm69380_panel_funcs = { .prepare = rm69380_prepare, .unprepare = rm69380_unprepare, .get_modes = rm69380_get_modes, }; static int rm69380_bl_update_status(struct backlight_device *bl) { struct mipi_dsi_device *dsi = bl_get_data(bl); u16 brightness = backlight_get_brightness(bl); int ret; dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); if (ret < 0) return ret; dsi->mode_flags |= MIPI_DSI_MODE_LPM; return 0; } static int rm69380_bl_get_brightness(struct backlight_device *bl) { struct mipi_dsi_device *dsi = bl_get_data(bl); u16 brightness; int ret; dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness); if (ret < 0) return ret; dsi->mode_flags |= MIPI_DSI_MODE_LPM; return brightness; } static const struct backlight_ops rm69380_bl_ops = { .update_status = rm69380_bl_update_status, .get_brightness = rm69380_bl_get_brightness, }; static struct backlight_device * rm69380_create_backlight(struct mipi_dsi_device *dsi) { struct device *dev = &dsi->dev; const struct backlight_properties props = { .type = BACKLIGHT_RAW, .brightness = 511, .max_brightness = 2047, }; return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, &rm69380_bl_ops, &props); } static int rm69380_probe(struct mipi_dsi_device *dsi) { struct mipi_dsi_host *dsi_sec_host; struct rm69380_panel *ctx; struct device *dev = &dsi->dev; struct device_node *dsi_sec; int ret, i; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; ctx->supplies[0].supply = "vddio"; ctx->supplies[1].supply = "avdd"; 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"); 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"); dsi_sec = of_graph_get_remote_node(dsi->dev.of_node, 1, -1); if (dsi_sec) { const struct mipi_dsi_device_info info = { "RM69380 DSI1", 0, dsi_sec }; dsi_sec_host = of_find_mipi_dsi_host_by_node(dsi_sec); of_node_put(dsi_sec); if (!dsi_sec_host) return dev_err_probe(dev, -EPROBE_DEFER, "Cannot get secondary DSI host\n"); ctx->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi_sec_host, &info); if (IS_ERR(ctx->dsi[1])) return dev_err_probe(dev, PTR_ERR(ctx->dsi[1]), "Cannot get secondary DSI node\n"); mipi_dsi_set_drvdata(ctx->dsi[1], ctx); } ctx->dsi[0] = dsi; mipi_dsi_set_drvdata(dsi, ctx); drm_panel_init(&ctx->panel, dev, &rm69380_panel_funcs, DRM_MODE_CONNECTOR_DSI); ctx->panel.prepare_prev_first = true; ctx->panel.backlight = rm69380_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); for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) { if (!ctx->dsi[i]) continue; dev_dbg(&ctx->dsi[i]->dev, "Binding DSI %d\n", i); ctx->dsi[i]->lanes = 4; ctx->dsi[i]->format = MIPI_DSI_FMT_RGB888; ctx->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_CLOCK_NON_CONTINUOUS; ret = devm_mipi_dsi_attach(dev, ctx->dsi[i]); if (ret < 0) { drm_panel_remove(&ctx->panel); return dev_err_probe(dev, ret, "Failed to attach to DSI%d\n", i); } } return 0; } static void rm69380_remove(struct mipi_dsi_device *dsi) { struct rm69380_panel *ctx = mipi_dsi_get_drvdata(dsi); drm_panel_remove(&ctx->panel); } static const struct of_device_id rm69380_of_match[] = { { .compatible = "lenovo,j716f-edo-rm69380" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rm69380_of_match); static struct mipi_dsi_driver rm69380_panel_driver = { .probe = rm69380_probe, .remove = rm69380_remove, .driver = { .name = "panel-raydium-rm69380", .of_match_table = rm69380_of_match, }, }; module_mipi_dsi_driver(rm69380_panel_driver); MODULE_AUTHOR("David Wronek <david@mainlining.org"); MODULE_DESCRIPTION("DRM driver for Raydium RM69380-equipped DSI panels"); MODULE_LICENSE("GPL");
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