W dniu 2024-04-14 22:00, Dmitry Baryshkov napisał(a):
On Sun, Apr 14, 2024 at 05:22:31PM +0200, David Wronek wrote:Add support for the 2560x1600@90Hz OLED panel by EDO bundled with aRaydium RM69380 controller, as found on the Lenovo Xiaoxin Pad Pro 2021.Signed-off-by: David Wronek <david@xxxxxxxxxxxxxx> --- drivers/gpu/drm/panel/Kconfig | 14 + drivers/gpu/drm/panel/Makefile | 1 +drivers/gpu/drm/panel/panel-raydium-rm69380.c | 378 ++++++++++++++++++++++++++3 files changed, 393 insertions(+)diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfigindex 154f5bf82980..84cbd838f57e 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -542,6 +542,20 @@ config DRM_PANEL_RAYDIUM_RM692E5 Say Y here if you want to enable support for Raydium RM692E5-baseddisplay panels, such as the one found in the Fairphone 5 smartphone.+config DRM_PANEL_RAYDIUM_RM69380 + tristate "Raydium RM69380-based DSI panel" + depends on BACKLIGHT_CLASS_DEVICE + depends on DRM_DISPLAY_DP_HELPER + depends on DRM_DISPLAY_HELPER + depends on DRM_MIPI_DSI + depends on OF + help + Say Y here if you want to enable support for Raydium RM69380-based + display panels. ++ This panel controller can be found in the Lenovo Xiaoxin Pad Pro 2021+ in combiantion with an EDO OLED panel. + config DRM_PANEL_RONBO_RB070D30 tristate "Ronbo Electronics RB070D30 panel" depends on OFdiff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefileindex 24a02655d726..e2a2807d4ef0 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile@@ -55,6 +55,7 @@ obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreenobj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o +obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM69380) += panel-raydium-rm69380.o obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.oobj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.oobj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.odiff --git a/drivers/gpu/drm/panel/panel-raydium-rm69380.c b/drivers/gpu/drm/panel/panel-raydium-rm69380.cnew file mode 100644 index 000000000000..0b2d576b051d --- /dev/null +++ b/drivers/gpu/drm/panel/panel-raydium-rm69380.c @@ -0,0 +1,378 @@ +// 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@xxxxxxxxxxxxxx> + */ + +#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 <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.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; + bool prepared; +}; + +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, 0x53, 0x28); + mipi_dsi_dcs_write_seq(dsi, 0xc2, 0x08); + mipi_dsi_dcs_write_seq(dsi, 0x35, 0x00); + mipi_dsi_dcs_write_seq(dsi, 0x51, 0x07, 0xff);Does this assume that the host broadcasts commands to both DSI0 and DSI1or is it enough to send commands on DSI0 only?
It is enough to send the commands to DSI0 only.
+ + 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; + + 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; + } + + 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; + } + + ctx->prepared = true;There is no needto count 'prepared', it's now being handled by the drm core.
Ack.
+ 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; + + if (!ctx->prepared) + return 0; + + 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); + + ctx->prepared = false; + 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, +}; + +static int rm69380_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &rm69380_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);Please use drm_connector_helper_get_modes_fixed()
Ack.
+ + return 1; +} + +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 = 2047, + .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) { + dev_notice(dev, "Using Dual-DSI\n"); + + const struct mipi_dsi_device_info info = { "RM69380", 0, + dsi_sec }; + + dev_notice(dev, "Found second DSI `%s`\n", dsi_sec->name);Please switch to dev_dbg. By default the driver should be quiet.
Ack.
+ + 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] = + mipi_dsi_device_register_full(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"); + } + + dev_notice(dev, "Second DSI name `%s`\n", ctx->dsi[1]->name); + mipi_dsi_set_drvdata(ctx->dsi[1], ctx); + } else { + dev_notice(dev, "Using Single-DSI\n"); + } + + 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_notice(&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 = mipi_dsi_attach(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); + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) { + if (!ctx->dsi[i]) + continue; + + ret = mipi_dsi_detach(ctx->dsi[i]); + if (ret < 0)+ dev_err(&dsi->dev, "Failed to detach from DSI%d host: %d\n", i, ret);+ } + + 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@xxxxxxxxxxxxxx");+MODULE_DESCRIPTION("DRM driver for Raydium RM69380-equipped DSI panels");+MODULE_LICENSE("GPL"); -- 2.44.0
-- Best regards, David Wronek <david@xxxxxxxxxxxxxx>
