[PATCH v6 2/2] drm: panel: add support for the Renesas R63419 based dual-DSI video mode Display Panels
From: Neil Armstrong <neil.armstrong@linaro.org>
Date: 2026-05-22 12:51:33
Also in:
linux-devicetree, linux-renesas-soc, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm panel drivers, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Neil Armstrong, Linus Torvalds
From: KancyJoe <redacted> Implement support for the Renesas 63419 based dual-DSI video mode Display Panels found in the Ayaneo gaming handled devices. Signed-off-by: KancyJoe <redacted> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> --- drivers/gpu/drm/panel/Kconfig | 12 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-renesas-r63419.c | 364 +++++++++++++++++++++++++++ 3 files changed, 377 insertions(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 7450b27622a2..7295246cfa58 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig@@ -796,6 +796,18 @@ config DRM_PANEL_RENESAS_R61307 This panel controller can be found in LG Optimus Vu P895 smartphone in combination with LCD panel. +config DRM_PANEL_RENESAS_R63419 + tristate "Renesas R63419 dual-DSI video mode panels" + depends on OF && GPIOLIB + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for Ayaneo WT0600 and WT0630 + 1440x2560 60Hz dual-DSI video mode display panels with Renesas + R63419 IC. + + These panels are used in Ayaneo handheld gaming devices. + config DRM_PANEL_RENESAS_R69328 tristate "Renesas R69328 720x1280 DSI video mode panel" depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index c2c5cf817116..be9a6f3c9743 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile@@ -78,6 +78,7 @@ 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_RENESAS_R61307) += panel-renesas-r61307.o +obj-$(CONFIG_DRM_PANEL_RENESAS_R63419) += panel-renesas-r63419.o obj-$(CONFIG_DRM_PANEL_RENESAS_R69328) += panel-renesas-r69328.o obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMS581VF01) += panel-samsung-ams581vf01.o
diff --git a/drivers/gpu/drm/panel/panel-renesas-r63419.c b/drivers/gpu/drm/panel/panel-renesas-r63419.c
new file mode 100644
index 000000000000..dba156f8427c
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-renesas-r63419.c@@ -0,0 +1,364 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * DRM driver for Renesas R63419 based dual-DSI video mode panels + * + * Copyright (c) 2025, Kancy Joe <kancy2333@outlook.com> + * Copyright (C) 2026 Linaro Limited + * Author: Neil Armstrong <neil.armstrong@linaro.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_graph.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> + +#include <drm/drm_connector.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_probe_helper.h> + +struct renesas_r63419_panel { + struct drm_panel panel; + struct mipi_dsi_device *dsi[2]; + const struct panel_desc *desc; + + struct gpio_desc *reset_gpio; + struct regulator_bulk_data *vdd_supplies; + struct regulator_bulk_data *vcc_supplies; + enum drm_panel_orientation orientation; +}; + +/* VDDIO/VDD Supplies */ +static const struct regulator_bulk_data renesas_r63419_vdd_supplies[] = { + { .supply = "vddio" }, + { .supply = "vdd" }, +}; + +/* VSP/VSN/VCI Supplies */ +static const struct regulator_bulk_data renesas_r63419_vcc_supplies[] = { + { .supply = "vsp" }, + { .supply = "vsn" }, + { .supply = "vci" }, +}; + +struct panel_desc { + const struct drm_display_mode *mode; + unsigned int lanes; + unsigned long mode_flags; + enum mipi_dsi_pixel_format format; + const struct mipi_dsi_device_info dsi_info; +}; + +static const struct drm_display_mode wt0600_mode = { + /* Dual dsi */ + .clock = 2 * (720 + 100 + 8 + 40) * (2560 + 15 + 2 + 8) * 60 / 1000, + .hdisplay = 2 * 720, + .hsync_start = 2 * (720 + 100), + .hsync_end = 2 * (720 + 100 + 8), + .htotal = 2 * (720 + 100 + 8 + 40), + .vdisplay = 2560, + .vsync_start = 2560 + 15, + .vsync_end = 2560 + 15 + 2, + .vtotal = 2560 + 15 + 2 + 8, + .type = DRM_MODE_TYPE_DRIVER, + .width_mm = 74, + .height_mm = 131, +}; + +static const struct drm_display_mode wt0630_mode = { + /* Dual dsi */ + .clock = 2 * (720 + 100 + 8 + 40) * (2560 + 15 + 2 + 8) * 60 / 1000, + .hdisplay = 2 * 720, + .hsync_start = 2 * (720 + 100), + .hsync_end = 2 * (720 + 100 + 8), + .htotal = 2 * (720 + 100 + 8 + 40), + .vdisplay = 2560, + .vsync_start = 2560 + 15, + .vsync_end = 2560 + 15 + 2, + .vtotal = 2560 + 15 + 2 + 8, + .type = DRM_MODE_TYPE_DRIVER, + .width_mm = 78, + .height_mm = 140, +}; + +static struct panel_desc wt0600_desc = { + .lanes = 4, + .mode = &wt0600_mode, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, +}; + +static struct panel_desc wt0630_desc = { + .lanes = 4, + .mode = &wt0630_mode, /* wt0600 only has different screen size */ + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, +}; + +static inline struct renesas_r63419_panel * +to_renesas_r63419_panel(struct drm_panel *panel) +{ + return container_of(panel, struct renesas_r63419_panel, panel); +} + +/* + * Helper to switch between DSI links, so we share a single dsi_ctx + * for both links, so in case of an error all writes & sleep for + * both links are ignored. + */ +static inline void dsi_link_switch(struct renesas_r63419_panel *ctx, + struct mipi_dsi_multi_context *dsi_ctx, + unsigned int link) +{ + dsi_ctx->dsi = ctx->dsi[link]; +} + +static int renesas_r63419_on(struct renesas_r63419_panel *ctx) +{ + struct mipi_dsi_multi_context dsi_ctx = { 0 }; + + dsi_link_switch(ctx, &dsi_ctx, 0); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + dsi_link_switch(ctx, &dsi_ctx, 1); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 150); + + dsi_link_switch(ctx, &dsi_ctx, 0); + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + dsi_link_switch(ctx, &dsi_ctx, 1); + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 50); + + return dsi_ctx.accum_err; +} + +static int renesas_r63419_disable(struct drm_panel *panel) +{ + struct renesas_r63419_panel *ctx = to_renesas_r63419_panel(panel); + struct mipi_dsi_multi_context dsi_ctx = { 0 }; + + dsi_link_switch(ctx, &dsi_ctx, 0); + mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); + dsi_link_switch(ctx, &dsi_ctx, 1); + mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 50); + + dsi_link_switch(ctx, &dsi_ctx, 0); + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); + dsi_link_switch(ctx, &dsi_ctx, 1); + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 120); + + return dsi_ctx.accum_err; +} + +static int renesas_r63419_prepare(struct drm_panel *panel) +{ + struct renesas_r63419_panel *ctx = to_renesas_r63419_panel(panel); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(renesas_r63419_vdd_supplies), + ctx->vdd_supplies); + if (ret < 0) + return ret; + + usleep_range(1000, 2000); + + ret = regulator_bulk_enable(ARRAY_SIZE(renesas_r63419_vcc_supplies), + ctx->vcc_supplies); + if (ret < 0) { + regulator_bulk_disable(ARRAY_SIZE(renesas_r63419_vdd_supplies), + ctx->vdd_supplies); + return ret; + } + + usleep_range(1000, 2000); + + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + + usleep_range(3000, 4000); + + ret = renesas_r63419_on(ctx); + if (ret < 0) { + dev_err(panel->dev, "Failed to initialize panel: %d\n", ret); + + /* Power off sequence from the r63419 datasheet */ + regulator_bulk_disable(ARRAY_SIZE(renesas_r63419_vcc_supplies), + ctx->vcc_supplies); + regulator_bulk_disable(ARRAY_SIZE(renesas_r63419_vdd_supplies), + ctx->vdd_supplies); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + + return ret; + } + + return 0; +} + +static int renesas_r63419_unprepare(struct drm_panel *panel) +{ + struct renesas_r63419_panel *ctx = to_renesas_r63419_panel(panel); + + /* Power off sequence from the r63419 datasheet */ + regulator_bulk_disable(ARRAY_SIZE(renesas_r63419_vcc_supplies), ctx->vcc_supplies); + regulator_bulk_disable(ARRAY_SIZE(renesas_r63419_vdd_supplies), ctx->vdd_supplies); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + + return 0; +} + +static int renesas_r63419_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct renesas_r63419_panel *ctx = to_renesas_r63419_panel(panel); + const struct drm_display_mode *mode = ctx->desc->mode; + + drm_connector_set_panel_orientation(connector, ctx->orientation); + + return drm_connector_helper_get_modes_fixed(connector, mode); +} + +static enum drm_panel_orientation +renesas_r63419_get_orientation(struct drm_panel *panel) +{ + struct renesas_r63419_panel *ctx = to_renesas_r63419_panel(panel); + + return ctx->orientation; +} + +static const struct drm_panel_funcs renesas_r63419_panel_funcs = { + .disable = renesas_r63419_disable, + .prepare = renesas_r63419_prepare, + .unprepare = renesas_r63419_unprepare, + .get_modes = renesas_r63419_get_modes, + .get_orientation = renesas_r63419_get_orientation, +}; + +static int renesas_r63419_probe(struct mipi_dsi_device *dsi) +{ + struct mipi_dsi_device_info info = { }; + struct device *dev = &dsi->dev; + struct renesas_r63419_panel *ctx; + struct device_node *dsi1_node; + struct mipi_dsi_host *dsi1_host; + int ret, i; + + ctx = devm_drm_panel_alloc(dev, struct renesas_r63419_panel, panel, + &renesas_r63419_panel_funcs, DRM_MODE_CONNECTOR_DSI); + if (IS_ERR(ctx)) + return PTR_ERR(ctx); + + ctx->desc = of_device_get_match_data(dev); + if (!ctx->desc) + return dev_err_probe(dev, -ENODEV, + "Failed to get panel description\n"); + + ret = devm_regulator_bulk_get_const(&dsi->dev, + ARRAY_SIZE(renesas_r63419_vdd_supplies), + renesas_r63419_vdd_supplies, &ctx->vdd_supplies); + if (ret < 0) + return ret; + + ret = devm_regulator_bulk_get_const(&dsi->dev, + ARRAY_SIZE(renesas_r63419_vcc_supplies), + renesas_r63419_vcc_supplies, &ctx->vcc_supplies); + if (ret < 0) + return ret; + + 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 gpio\n"); + + /* Get second DSI host */ + dsi1_node = of_graph_get_remote_node(dsi->dev.of_node, 1, -1); + if (!dsi1_node) + return dev_err_probe(dev, -ENODEV, + "Failed to get remote node for second DSI\n"); + + dsi1_host = of_find_mipi_dsi_host_by_node(dsi1_node); + of_node_put(dsi1_node); + if (!dsi1_host) + return dev_err_probe(dev, -EPROBE_DEFER, + "Failed to find second DSI host\n"); + + /* Copy current DSI info, do not provide OF node since no driver needs to be attached */ + strscpy(info.type, dsi->name, sizeof(info.type)); + info.channel = dsi->channel; + + /* Register the second DSI device */ + ctx->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi1_host, &info); + if (IS_ERR(ctx->dsi[1])) + return dev_err_probe(dev, PTR_ERR(ctx->dsi[1]), + "Failed to register second DSI device\n"); + + ctx->dsi[0] = dsi; + mipi_dsi_set_drvdata(dsi, ctx); + + /* Get panel orientation */ + ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation); + if (ret < 0 && ret != -ENODEV) + return dev_err_probe(dev, ret, + "Failed to get panel orientation\n"); + + ctx->panel.prepare_prev_first = true; + + ret = drm_panel_of_backlight(&ctx->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to get backlight\n"); + + ret = devm_drm_panel_add(dev, &ctx->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to add panel\n"); + + /* Configure and attach both DSI devices */ + for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) { + ctx->dsi[i]->lanes = ctx->desc->lanes; + ctx->dsi[i]->format = ctx->desc->format; + ctx->dsi[i]->mode_flags = ctx->desc->mode_flags; + + ret = devm_mipi_dsi_attach(dev, ctx->dsi[i]); + if (ret < 0) + return dev_err_probe(dev, ret, + "Failed to attach DSI device %d\n", i); + } + + return 0; +} + +static const struct of_device_id renesas_r63419_of_match[] = { + { + .compatible = "ayaneo,wt0600-2k", + .data = &wt0600_desc, + }, + { + .compatible = "ayaneo,wt0630-2k", + .data = &wt0630_desc, + }, + {} +}; +MODULE_DEVICE_TABLE(of, renesas_r63419_of_match); + +static struct mipi_dsi_driver renesas_r63419_driver = { + .probe = renesas_r63419_probe, + .driver = { + .name = "panel-renesas-r63419", + .of_match_table = renesas_r63419_of_match, + }, +}; +module_mipi_dsi_driver(renesas_r63419_driver); + +MODULE_AUTHOR("Kancy Joe <kancy2333@outlook.com>"); +MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>"); +MODULE_DESCRIPTION("DRM driver for Renesas R63419 based dual-DSI video mode panels"); +MODULE_LICENSE("GPL");
--
2.34.1