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It uses ota7290b IC as a controller. Reviewed-by: Linus Walleij Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/panel/Kconfig | 12 ++ drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-focaltech-ota7290b.c | 208 +++++++++++++++++++++++ 3 files changed, 221 insertions(+) diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index ba527b4d7737..979109c27b9b 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -144,6 +144,18 @@ config DRM_PANEL_FEIYANG_FY07024DI26A30D Say Y if you want to enable support for panels based on the Feiyang FY07024DI26A30-D MIPI-DSI interface. +config DRM_PANEL_FOCALTECH_OTA7290B + tristate "Focaltech OTA7290B" + depends on DRM_MIPI_DSI + depends on I2C + depends on BACKLIGHT_CLASS_DEVICE + select DRM_KMS_HELPER + help + Enable support for panels using OTA7290B as a controller (for + example, Waveshare 12.3" DSI TOUCH-A panel). Say Y here if you want + to enable support for this panel. To compile this driver as a module, + choose M here. + config DRM_PANEL_DSI_CM tristate "Generic DSI command mode panels" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index a4291dc3905b..0d694acbfbb6 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_PANEL_EBBG_FT8719) += panel-ebbg-ft8719.o obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o +obj-$(CONFIG_DRM_PANEL_FOCALTECH_OTA7290B) += panel-focaltech-ota7290b.o obj-$(CONFIG_DRM_PANEL_HIMAX_HX8279) += panel-himax-hx8279.o obj-$(CONFIG_DRM_PANEL_HIMAX_HX83102) += panel-himax-hx83102.o obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112A) += panel-himax-hx83112a.o diff --git a/drivers/gpu/drm/panel/panel-focaltech-ota7290b.c b/drivers/gpu/drm/panel/panel-focaltech-ota7290b.c new file mode 100644 index 000000000000..991d6a4caf17 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-focaltech-ota7290b.c @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 Waveshare International Limited + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include +#include + +struct ota7290b { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + + struct regulator *power; + struct gpio_desc *reset; + struct regulator *avdd; + struct regulator *iovcc; + + enum drm_panel_orientation orientation; +}; + +static inline struct ota7290b *panel_to_ota(struct drm_panel *panel) +{ + return container_of(panel, struct ota7290b, panel); +} + +static int ota7290b_prepare(struct drm_panel *panel) +{ + struct ota7290b *ctx = panel_to_ota(panel); + struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi }; + int ret; + + if (ctx->iovcc) { + ret = regulator_enable(ctx->iovcc); + if (ret) + dev_err(panel->dev, "failed to enable IO regulator: %d\n", ret); + } + + if (ctx->avdd) { + ret = regulator_enable(ctx->avdd); + if (ret) + dev_err(panel->dev, "failed to enable AVDD regulator: %d\n", ret); + } + + if (ctx->reset) { + gpiod_set_value_cansleep(ctx->reset, 0); + msleep(60); + gpiod_set_value_cansleep(ctx->reset, 1); + msleep(60); + gpiod_set_value_cansleep(ctx->reset, 0); + msleep(60); + } + + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 120); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 50); + + if (dsi_ctx.accum_err < 0) + dev_err(panel->dev, "failed to init panel: %d\n", ret); + + return dsi_ctx.accum_err; +} + +static int ota7290b_unprepare(struct drm_panel *panel) +{ + struct ota7290b *ctx = panel_to_ota(panel); + struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi }; + + mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); + + if (ctx->reset) { + gpiod_set_value_cansleep(ctx->reset, 1); + msleep(5); + } + + if (ctx->avdd) + regulator_disable(ctx->avdd); + + if (ctx->iovcc) + regulator_disable(ctx->iovcc); + + return 0; +} + +static const struct drm_display_mode waveshare_dsi_touch_8_8_a_mode = { + .clock = 75000, + + .hdisplay = 480, + .hsync_start = 480 + 50, + .hsync_end = 480 + 50 + 50, + .htotal = 480 + 50 + 50 + 50, + + .vdisplay = 1920, + .vsync_start = 1920 + 20, + .vsync_end = 1920 + 20 + 20, + .vtotal = 1920 + 20 + 20 + 20, + + .width_mm = 68, + .height_mm = 219, + .type = DRM_MODE_TYPE_DRIVER, +}; + +static int ota7290b_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + return drm_connector_helper_get_modes_fixed(connector, &waveshare_dsi_touch_8_8_a_mode); +} + +static enum drm_panel_orientation ota7290b_get_orientation(struct drm_panel *panel) +{ + struct ota7290b *ctx = panel_to_ota(panel); + + return ctx->orientation; +} + +static const struct drm_panel_funcs ota7290b_funcs = { + .prepare = ota7290b_prepare, + .unprepare = ota7290b_unprepare, + .get_modes = ota7290b_get_modes, + .get_orientation = ota7290b_get_orientation, +}; + +static int ota7290b_probe(struct mipi_dsi_device *dsi) +{ + struct ota7290b *ctx; + int ret; + + ctx = devm_drm_panel_alloc(&dsi->dev, struct ota7290b, panel, + &ota7290b_funcs, + DRM_MODE_CONNECTOR_DSI); + if (!ctx) + return -ENOMEM; + mipi_dsi_set_drvdata(dsi, ctx); + ctx->dsi = dsi; + + ctx->reset = devm_gpiod_get_optional(&dsi->dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ctx->reset)) + return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset), + "Couldn't get our reset GPIO\n"); + + ctx->iovcc = devm_regulator_get_optional(&dsi->dev, "iovcc"); + if (IS_ERR(ctx->iovcc)) + return dev_err_probe(&dsi->dev, PTR_ERR(ctx->iovcc), + "Couldn't get our iovcc supply\n"); + + ctx->avdd = devm_regulator_get_optional(&dsi->dev, "avdd"); + if (IS_ERR(ctx->avdd)) + return dev_err_probe(&dsi->dev, PTR_ERR(ctx->avdd), + "Couldn't get our avdd supply\n"); + + ret = of_drm_get_panel_orientation( + dsi->dev.of_node, &ctx->orientation); + if (ret) { + dev_err(&dsi->dev, "%pOF: failed to get orientation: %d\n", + dsi->dev.of_node, ret); + return ret; + } + + ret = drm_panel_of_backlight(&ctx->panel); + if (ret) + return ret; + + ctx->panel.prepare_prev_first = true; + + ret = devm_drm_panel_add(&dsi->dev, &ctx->panel); + if (ret) + return ret; + + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_HSE | + MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS, + dsi->format = MIPI_DSI_FMT_RGB888, + dsi->lanes = 2; + + return devm_mipi_dsi_attach(&dsi->dev, dsi); +} + +static const struct of_device_id ota7290b_of_match[] = { + { .compatible = "waveshare,8.8-dsi-touch-a", }, + {} +}; +MODULE_DEVICE_TABLE(of, ota7290b_of_match); + +static struct mipi_dsi_driver ota7290b_driver = { + .probe = ota7290b_probe, + .driver = { + .name = "focaltech-ota7290b", + .of_match_table = ota7290b_of_match, + }, +}; +module_mipi_dsi_driver(ota7290b_driver); + +MODULE_DESCRIPTION("Panel driver for Focaltech OTA7290B panels"); +MODULE_LICENSE("GPL"); -- 2.47.3