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drm/panel: add driver for Waveshare 8.8" DSI TOUCH-A panel
Add driver for the panel found on Waveshare 8.8" DSI TOUCH-A kit. It uses ota7290b IC as a controller. Reviewed-by: Linus Walleij <linusw@kernel.org> Link: https://patch.msgid.link/20260413-waveshare-dsi-touch-v3-19-3aeb53022c32@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Dmitry Baryshkov
parent
e43a8e3ad8
commit
07853e9542
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@ -144,6 +144,18 @@ config DRM_PANEL_FEIYANG_FY07024DI26A30D
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Say Y if you want to enable support for panels based on the
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Feiyang FY07024DI26A30-D MIPI-DSI interface.
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config DRM_PANEL_FOCALTECH_OTA7290B
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tristate "Focaltech OTA7290B"
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depends on DRM_MIPI_DSI
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depends on I2C
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depends on BACKLIGHT_CLASS_DEVICE
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select DRM_KMS_HELPER
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help
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Enable support for panels using OTA7290B as a controller (for
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example, Waveshare 12.3" DSI TOUCH-A panel). Say Y here if you want
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to enable support for this panel. To compile this driver as a module,
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choose M here.
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config DRM_PANEL_DSI_CM
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tristate "Generic DSI command mode panels"
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depends on OF
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@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_PANEL_EBBG_FT8719) += panel-ebbg-ft8719.o
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obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o
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obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o
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obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o
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obj-$(CONFIG_DRM_PANEL_FOCALTECH_OTA7290B) += panel-focaltech-ota7290b.o
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obj-$(CONFIG_DRM_PANEL_HIMAX_HX8279) += panel-himax-hx8279.o
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obj-$(CONFIG_DRM_PANEL_HIMAX_HX83102) += panel-himax-hx83102.o
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obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112A) += panel-himax-hx83112a.o
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225
drivers/gpu/drm/panel/panel-focaltech-ota7290b.c
Normal file
225
drivers/gpu/drm/panel/panel-focaltech-ota7290b.c
Normal file
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@ -0,0 +1,225 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2024 Waveshare International Limited
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* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
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*/
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_probe_helper.h>
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struct ota7290b {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct regulator *power;
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struct gpio_desc *reset;
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struct regulator *avdd;
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struct regulator *vdd;
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struct regulator *vcc;
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enum drm_panel_orientation orientation;
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};
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static inline struct ota7290b *panel_to_ota(struct drm_panel *panel)
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{
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return container_of(panel, struct ota7290b, panel);
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}
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static int ota7290b_prepare(struct drm_panel *panel)
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{
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struct ota7290b *ctx = panel_to_ota(panel);
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
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int ret;
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if (ctx->vcc) {
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ret = regulator_enable(ctx->vcc);
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if (ret)
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dev_err(panel->dev, "failed to enable VCC regulator: %d\n", ret);
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}
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if (ctx->reset) {
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gpiod_set_value_cansleep(ctx->reset, 0);
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msleep(60);
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gpiod_set_value_cansleep(ctx->reset, 1);
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msleep(60);
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}
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if (ctx->vdd) {
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ret = regulator_enable(ctx->vdd);
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if (ret)
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dev_err(panel->dev, "failed to enable VDD regulator: %d\n", ret);
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}
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if (ctx->reset) {
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gpiod_set_value_cansleep(ctx->reset, 0);
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msleep(60);
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}
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if (ctx->avdd) {
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ret = regulator_enable(ctx->avdd);
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if (ret)
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dev_err(panel->dev, "failed to enable AVDD regulator: %d\n", ret);
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}
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mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 120);
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mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 50);
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if (dsi_ctx.accum_err < 0)
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dev_err(panel->dev, "failed to init panel: %d\n", dsi_ctx.accum_err);
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return dsi_ctx.accum_err;
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}
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static int ota7290b_unprepare(struct drm_panel *panel)
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{
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struct ota7290b *ctx = panel_to_ota(panel);
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
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mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
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mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
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if (ctx->avdd)
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regulator_disable(ctx->avdd);
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if (ctx->reset) {
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gpiod_set_value_cansleep(ctx->reset, 1);
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msleep(5);
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}
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if (ctx->vdd)
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regulator_disable(ctx->vdd);
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if (ctx->vcc)
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regulator_disable(ctx->vcc);
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return 0;
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}
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static const struct drm_display_mode waveshare_dsi_touch_8_8_a_mode = {
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.clock = 75000,
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.hdisplay = 480,
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.hsync_start = 480 + 50,
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.hsync_end = 480 + 50 + 50,
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.htotal = 480 + 50 + 50 + 50,
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.vdisplay = 1920,
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.vsync_start = 1920 + 20,
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.vsync_end = 1920 + 20 + 20,
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.vtotal = 1920 + 20 + 20 + 20,
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.width_mm = 68,
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.height_mm = 219,
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.type = DRM_MODE_TYPE_DRIVER,
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};
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static int ota7290b_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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return drm_connector_helper_get_modes_fixed(connector, &waveshare_dsi_touch_8_8_a_mode);
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}
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static enum drm_panel_orientation ota7290b_get_orientation(struct drm_panel *panel)
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{
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struct ota7290b *ctx = panel_to_ota(panel);
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return ctx->orientation;
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}
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static const struct drm_panel_funcs ota7290b_funcs = {
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.prepare = ota7290b_prepare,
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.unprepare = ota7290b_unprepare,
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.get_modes = ota7290b_get_modes,
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.get_orientation = ota7290b_get_orientation,
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};
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static int ota7290b_probe(struct mipi_dsi_device *dsi)
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{
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struct ota7290b *ctx;
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int ret;
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ctx = devm_drm_panel_alloc(&dsi->dev, struct ota7290b, panel,
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&ota7290b_funcs,
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DRM_MODE_CONNECTOR_DSI);
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if (!ctx)
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return -ENOMEM;
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mipi_dsi_set_drvdata(dsi, ctx);
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ctx->dsi = dsi;
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ctx->reset = devm_gpiod_get_optional(&dsi->dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(ctx->reset))
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return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),
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"Couldn't get our reset GPIO\n");
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ctx->vcc = devm_regulator_get_optional(&dsi->dev, "vcc");
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if (IS_ERR(ctx->vcc))
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return dev_err_probe(&dsi->dev, PTR_ERR(ctx->vcc),
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"Couldn't get our VCC supply\n");
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ctx->avdd = devm_regulator_get_optional(&dsi->dev, "avdd");
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if (IS_ERR(ctx->avdd))
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return dev_err_probe(&dsi->dev, PTR_ERR(ctx->avdd),
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"Couldn't get our AVDD supply\n");
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ctx->vdd = devm_regulator_get_optional(&dsi->dev, "vdd");
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if (IS_ERR(ctx->vdd))
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return dev_err_probe(&dsi->dev, PTR_ERR(ctx->vdd),
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"Couldn't get our VDD supply\n");
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ret = of_drm_get_panel_orientation(dsi->dev.of_node, &ctx->orientation);
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if (ret) {
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dev_err(&dsi->dev, "%pOF: failed to get orientation: %d\n",
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dsi->dev.of_node, ret);
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return ret;
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}
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ret = drm_panel_of_backlight(&ctx->panel);
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if (ret)
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return ret;
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ctx->panel.prepare_prev_first = true;
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ret = devm_drm_panel_add(&dsi->dev, &ctx->panel);
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if (ret)
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return ret;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_HSE |
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MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS,
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dsi->format = MIPI_DSI_FMT_RGB888,
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dsi->lanes = 2;
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return devm_mipi_dsi_attach(&dsi->dev, dsi);
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}
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static const struct of_device_id ota7290b_of_match[] = {
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{ .compatible = "waveshare,8.8-dsi-touch-a", },
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{}
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};
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MODULE_DEVICE_TABLE(of, ota7290b_of_match);
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static struct mipi_dsi_driver ota7290b_driver = {
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.probe = ota7290b_probe,
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.driver = {
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.name = "focaltech-ota7290b",
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.of_match_table = ota7290b_of_match,
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},
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};
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module_mipi_dsi_driver(ota7290b_driver);
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MODULE_DESCRIPTION("Panel driver for Focaltech OTA7290B panels");
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MODULE_LICENSE("GPL");
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