[PATCH v2 2/2] drm/panel: add BOE tv101wum-ll2 panel driver
Neil Armstrong
neil.armstrong at linaro.org
Wed Aug 28 09:22:41 UTC 2024
Add support for the 1200x1920 BOE TV101WUM-LL2 DSI Display Panel found
in the Lenovo Smart Tab M10 tablet. The controller is unknown.
Signed-off-by: Neil Armstrong <neil.armstrong at linaro.org>
---
drivers/gpu/drm/panel/Kconfig | 9 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-boe-tv101wum-ll2.c | 243 +++++++++++++++++++++++++
3 files changed, 253 insertions(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 5d83ddc06ece..d3a9a9fafe4e 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -87,6 +87,15 @@ config DRM_PANEL_BOE_TV101WUM_NL6
Say Y here if you want to support for BOE TV101WUM and AUO KD101N80
45NA WUXGA PANEL DSI Video Mode panel
+config DRM_PANEL_BOE_TV101WUM_LL2
+ tristate "BOE TV101WUM LL2 1200x1920 panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y here if you want to support for BOE TV101WUM-LL2
+ WUXGA PANEL DSI Video Mode panel
+
config DRM_PANEL_EBBG_FT8719
tristate "EBBG FT8719 panel driver"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 5581387707c6..987a08702410 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_DRM_PANEL_AUO_A030JTN01) += panel-auo-a030jtn01.o
obj-$(CONFIG_DRM_PANEL_BOE_BF060Y8M_AJ0) += panel-boe-bf060y8m-aj0.o
obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
obj-$(CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A) += panel-boe-th101mb31ig002-28a.o
+obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_LL2) += panel-boe-tv101wum-ll2.o
obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
obj-$(CONFIG_DRM_PANEL_DSI_CM) += panel-dsi-cm.o
obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-ll2.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-ll2.c
new file mode 100644
index 000000000000..ec6a177ef888
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-ll2.c
@@ -0,0 +1,243 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+// Copyright (c) 2013, The Linux Foundation. All rights reserved.
+// Copyright (c) 2024, Neil Armstrong <neil.armstrong at linaro.org>
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+
+struct boe_tv101wum_ll2 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data *supplies;
+};
+
+static const struct regulator_bulk_data boe_tv101wum_ll2_supplies[] = {
+ { .supply = "vsp" },
+ { .supply = "vsn" },
+};
+
+static inline struct boe_tv101wum_ll2 *to_boe_tv101wum_ll2(struct drm_panel *panel)
+{
+ return container_of(panel, struct boe_tv101wum_ll2, panel);
+}
+
+static void boe_tv101wum_ll2_reset(struct boe_tv101wum_ll2 *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+
+ msleep(120);
+}
+
+static int boe_tv101wum_ll2_on(struct boe_tv101wum_ll2 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+
+ mipi_dsi_msleep(&dsi_ctx, 120);
+
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0e);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0xff, 0x81, 0x68, 0x6c, 0x22,
+ 0x6d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x23);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x94, 0x2c, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x19);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xa2, 0x38);
+
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0c);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x80, 0xfd);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x00);
+
+ mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+
+ mipi_dsi_msleep(&dsi_ctx, 20);
+
+ return dsi_ctx.accum_err;
+}
+
+static int boe_tv101wum_ll2_off(struct boe_tv101wum_ll2 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+
+ mipi_dsi_msleep(&dsi_ctx, 70);
+
+ mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+
+ mipi_dsi_msleep(&dsi_ctx, 20);
+
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x5a);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x5a);
+
+ mipi_dsi_msleep(&dsi_ctx, 150);
+
+ return dsi_ctx.accum_err;
+}
+
+static int boe_tv101wum_ll2_prepare(struct drm_panel *panel)
+{
+ struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
+ ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ boe_tv101wum_ll2_reset(ctx);
+
+ ret = boe_tv101wum_ll2_on(ctx);
+ if (ret < 0) {
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
+ ctx->supplies);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int boe_tv101wum_ll2_unprepare(struct drm_panel *panel)
+{
+ struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
+
+ /* Ignore errors on failure, in any case set gpio and disable regulators */
+ boe_tv101wum_ll2_off(ctx);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+ regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
+ ctx->supplies);
+
+ return 0;
+}
+
+static const struct drm_display_mode boe_tv101wum_ll2_mode = {
+ .clock = (1200 + 27 + 8 + 12) * (1920 + 155 + 8 + 32) * 60 / 1000,
+ .hdisplay = 1200,
+ .hsync_start = 1200 + 27,
+ .hsync_end = 1200 + 27 + 8,
+ .htotal = 1200 + 27 + 8 + 12,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 155,
+ .vsync_end = 1920 + 155 + 8,
+ .vtotal = 1920 + 155 + 8 + 32,
+ .width_mm = 136,
+ .height_mm = 217,
+ .type = DRM_MODE_TYPE_DRIVER,
+};
+
+static int boe_tv101wum_ll2_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ /* We do not set display_info.bpc since unset value is bpc=8 by default */
+ return drm_connector_helper_get_modes_fixed(connector, &boe_tv101wum_ll2_mode);
+}
+
+static const struct drm_panel_funcs boe_tv101wum_ll2_panel_funcs = {
+ .prepare = boe_tv101wum_ll2_prepare,
+ .unprepare = boe_tv101wum_ll2_unprepare,
+ .get_modes = boe_tv101wum_ll2_get_modes,
+};
+
+static int boe_tv101wum_ll2_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct boe_tv101wum_ll2 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ret = devm_regulator_bulk_get_const(&dsi->dev,
+ ARRAY_SIZE(boe_tv101wum_ll2_supplies),
+ boe_tv101wum_ll2_supplies,
+ &ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_MODE_VIDEO_HSE;
+
+ drm_panel_init(&ctx->panel, dev, &boe_tv101wum_ll2_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ 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");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ drm_panel_remove(&ctx->panel);
+ return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+ }
+
+ return 0;
+}
+
+static void boe_tv101wum_ll2_remove(struct mipi_dsi_device *dsi)
+{
+ struct boe_tv101wum_ll2 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id boe_tv101wum_ll2_of_match[] = {
+ { .compatible = "boe,tv101wum-ll2" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, boe_tv101wum_ll2_of_match);
+
+static struct mipi_dsi_driver boe_tv101wum_ll2_driver = {
+ .probe = boe_tv101wum_ll2_probe,
+ .remove = boe_tv101wum_ll2_remove,
+ .driver = {
+ .name = "panel-boe-tv101wum_ll2",
+ .of_match_table = boe_tv101wum_ll2_of_match,
+ },
+};
+module_mipi_dsi_driver(boe_tv101wum_ll2_driver);
+
+MODULE_DESCRIPTION("DRM driver for BOE TV101WUM-LL2 Panel");
+MODULE_LICENSE("GPL");
--
2.34.1
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