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drm/panel: add BOE tv101wum-ll2 panel driver
Add support for the 1200x1920 BOE TV101WUM-LL2 DSI Display Panel found in the Lenovo Smart Tab M10 tablet. The controller is unknown. Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20240828-topic-sdm450-upstream-tbx605f-panel-v3-2-b792f93e1d6b@linaro.org Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240828-topic-sdm450-upstream-tbx605f-panel-v3-2-b792f93e1d6b@linaro.org
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‎drivers/gpu/drm/panel/Kconfig‎

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@@ -87,6 +87,15 @@ config DRM_PANEL_BOE_TV101WUM_NL6
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Say Y here if you want to support for BOE TV101WUM and AUO KD101N80
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45NA WUXGA PANEL DSI Video Mode panel
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config DRM_PANEL_BOE_TV101WUM_LL2
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tristate "BOE TV101WUM LL2 1200x1920 panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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help
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Say Y here if you want to support for BOE TV101WUM-LL2
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WUXGA PANEL DSI Video Mode panel
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config DRM_PANEL_EBBG_FT8719
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tristate "EBBG FT8719 panel driver"
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depends on OF

‎drivers/gpu/drm/panel/Makefile‎

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@@ -6,6 +6,7 @@ obj-$(CONFIG_DRM_PANEL_AUO_A030JTN01) += panel-auo-a030jtn01.o
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obj-$(CONFIG_DRM_PANEL_BOE_BF060Y8M_AJ0) += panel-boe-bf060y8m-aj0.o
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obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
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obj-$(CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A) += panel-boe-th101mb31ig002-28a.o
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obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_LL2) += panel-boe-tv101wum-ll2.o
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obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
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obj-$(CONFIG_DRM_PANEL_DSI_CM) += panel-dsi-cm.o
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obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o

‎drivers/gpu/drm/panel/panel-boe-tv101wum-ll2.c‎

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// SPDX-License-Identifier: GPL-2.0-only
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// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
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// Copyright (c) 2013, The Linux Foundation. All rights reserved.
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// Copyright (c) 2024, Neil Armstrong <neil.armstrong@linaro.org>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.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 boe_tv101wum_ll2 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct gpio_desc *reset_gpio;
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struct regulator_bulk_data *supplies;
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};
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static const struct regulator_bulk_data boe_tv101wum_ll2_supplies[] = {
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{ .supply = "vsp" },
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{ .supply = "vsn" },
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};
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static inline struct boe_tv101wum_ll2 *to_boe_tv101wum_ll2(struct drm_panel *panel)
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{
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return container_of(panel, struct boe_tv101wum_ll2, panel);
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}
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static void boe_tv101wum_ll2_reset(struct boe_tv101wum_ll2 *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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msleep(120);
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}
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static int boe_tv101wum_ll2_on(struct boe_tv101wum_ll2 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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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_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0e);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0xff, 0x81, 0x68, 0x6c, 0x22,
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0x6d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x23);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x94, 0x2c, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x19);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xa2, 0x38);
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mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0c);
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mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x80, 0xfd);
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mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x00);
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mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 20);
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return dsi_ctx.accum_err;
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}
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static void boe_tv101wum_ll2_off(struct boe_tv101wum_ll2 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 70);
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mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 20);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x5a);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x5a);
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mipi_dsi_msleep(&dsi_ctx, 150);
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}
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static int boe_tv101wum_ll2_prepare(struct drm_panel *panel)
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{
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struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
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int ret;
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ret = regulator_bulk_enable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
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ctx->supplies);
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if (ret < 0)
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return ret;
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boe_tv101wum_ll2_reset(ctx);
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ret = boe_tv101wum_ll2_on(ctx);
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if (ret < 0) {
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
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ctx->supplies);
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return ret;
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}
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return 0;
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}
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static int boe_tv101wum_ll2_unprepare(struct drm_panel *panel)
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{
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struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
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/* Ignore errors on failure, in any case set gpio and disable regulators */
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boe_tv101wum_ll2_off(ctx);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
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ctx->supplies);
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return 0;
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}
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static const struct drm_display_mode boe_tv101wum_ll2_mode = {
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.clock = (1200 + 27 + 8 + 12) * (1920 + 155 + 8 + 32) * 60 / 1000,
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.hdisplay = 1200,
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.hsync_start = 1200 + 27,
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.hsync_end = 1200 + 27 + 8,
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.htotal = 1200 + 27 + 8 + 12,
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.vdisplay = 1920,
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.vsync_start = 1920 + 155,
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.vsync_end = 1920 + 155 + 8,
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.vtotal = 1920 + 155 + 8 + 32,
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.width_mm = 136,
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.height_mm = 217,
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.type = DRM_MODE_TYPE_DRIVER,
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};
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static int boe_tv101wum_ll2_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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/* We do not set display_info.bpc since unset value is bpc=8 by default */
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return drm_connector_helper_get_modes_fixed(connector, &boe_tv101wum_ll2_mode);
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}
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static const struct drm_panel_funcs boe_tv101wum_ll2_panel_funcs = {
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.prepare = boe_tv101wum_ll2_prepare,
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.unprepare = boe_tv101wum_ll2_unprepare,
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.get_modes = boe_tv101wum_ll2_get_modes,
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};
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static int boe_tv101wum_ll2_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct boe_tv101wum_ll2 *ctx;
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int ret;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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ret = devm_regulator_bulk_get_const(&dsi->dev,
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ARRAY_SIZE(boe_tv101wum_ll2_supplies),
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boe_tv101wum_ll2_supplies,
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&ctx->supplies);
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if (ret < 0)
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return ret;
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(ctx->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
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"Failed to get reset-gpios\n");
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ctx->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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dsi->lanes = 4;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
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MIPI_DSI_MODE_VIDEO_HSE;
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drm_panel_init(&ctx->panel, dev, &boe_tv101wum_ll2_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ctx->panel.prepare_prev_first = true;
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ret = drm_panel_of_backlight(&ctx->panel);
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if (ret)
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return dev_err_probe(dev, ret, "Failed to get backlight\n");
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drm_panel_add(&ctx->panel);
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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drm_panel_remove(&ctx->panel);
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return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
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}
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return 0;
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}
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static void boe_tv101wum_ll2_remove(struct mipi_dsi_device *dsi)
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{
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struct boe_tv101wum_ll2 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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}
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static const struct of_device_id boe_tv101wum_ll2_of_match[] = {
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{ .compatible = "boe,tv101wum-ll2" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, boe_tv101wum_ll2_of_match);
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static struct mipi_dsi_driver boe_tv101wum_ll2_driver = {
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.probe = boe_tv101wum_ll2_probe,
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.remove = boe_tv101wum_ll2_remove,
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.driver = {
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.name = "panel-boe-tv101wum_ll2",
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.of_match_table = boe_tv101wum_ll2_of_match,
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},
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};
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module_mipi_dsi_driver(boe_tv101wum_ll2_driver);
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MODULE_DESCRIPTION("DRM driver for BOE TV101WUM-LL2 Panel");
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MODULE_LICENSE("GPL");

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