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Message-ID: <342bf5a0-8454-4fd6-be45-462f1e31e606@quicinc.com>
Date: Tue, 26 Dec 2023 14:56:58 -0800
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MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH v2 2/4] drm/panel: Add driver for BOE TH101MB31IG002-28A
 panel
Content-Language: en-US
To: Manuel Traut <manut@mecka.net>,
        Neil Armstrong
	<neil.armstrong@linaro.org>,
        Sam Ravnborg <sam@ravnborg.org>,
        Maarten
 Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard
	<mripard@kernel.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        David Airlie
	<airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring
	<robh+dt@kernel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>, Heiko Stuebner <heiko@sntech.de>,
        Sandy Huang <hjc@rock-chips.com>, Mark Yao
	<markyao0591@gmail.com>,
        Diederik de Haas <didi.debian@cknow.org>,
        Segfault
	<awarnecke002@hotmail.com>,
        Arnaud Ferraris <aferraris@debian.org>, Danct12
	<danct12@riseup.net>
CC: <dri-devel@lists.freedesktop.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>,
        <linux-rockchip@lists.infradead.org>
References: <20231223-pinetab2-v2-0-ec1856d0030e@mecka.net>
 <20231223-pinetab2-v2-2-ec1856d0030e@mecka.net>
From: Jessica Zhang <quic_jesszhan@quicinc.com>
In-Reply-To: <20231223-pinetab2-v2-2-ec1856d0030e@mecka.net>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Content-Transfer-Encoding: 7bit


On 12/23/2023 7:20 AM, Manuel Traut wrote:
> From: Alexander Warnecke <awarnecke002@hotmail.com>
> 
> The BOE TH101MB31IG002-28A panel is a WXGA panel.
> It is used in Pine64 Pinetab2 and PinetabV.
> 
> Signed-off-by: Alexander Warnecke <awarnecke002@hotmail.com>
> Signed-off-by: Manuel Traut <manut@mecka.net>
> ---
>   drivers/gpu/drm/panel/Kconfig                      |  11 +
>   drivers/gpu/drm/panel/Makefile                     |   1 +
>   .../gpu/drm/panel/panel-boe-th101mb31ig002-28a.c   | 348 +++++++++++++++++++++
>   3 files changed, 360 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 99e14dc212ec..927ddd10e688 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -67,6 +67,17 @@ config DRM_PANEL_BOE_HIMAX8279D
>   	  24 bit RGB per pixel. It provides a MIPI DSI interface to
>   	  the host and has a built-in LED backlight.
>   
> +config DRM_PANEL_BOE_TH101MB31UIG002_28A
> +	tristate "Boe TH101MB31UIG002-28A panel"
> +	depends on OF
> +	depends on DRM_MIPI_DSI
> +	depends on BACKLIGHT_CLASS_DEVICE
> +	help
> +	  Say Y here if you want to enable support for Boe
> +	  TH101MB31UIG002-28A TFT-LCD modules. The panel has a 800x1280
> +	  resolution and uses 24 bit RGB per pixel. It provides a MIPI DSI
> +	  interface to the host and has a built-in LED backlight.
> +
>   config DRM_PANEL_BOE_TV101WUM_NL6
>   	tristate "BOE TV101WUM and AUO KD101N80 45NA 1200x1920 panel"
>   	depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index d10c3de51c6d..dd6e1ac9d0a2 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_ASUS_Z00T_TM5P5_NT35596) += panel-asus-z00t-tm5p5-n35596.
>   obj-$(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_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-th101mb31ig002-28a.c b/drivers/gpu/drm/panel/panel-boe-th101mb31ig002-28a.c
> new file mode 100644
> index 000000000000..ffe4047b7434
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-boe-th101mb31ig002-28a.c
> @@ -0,0 +1,348 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2023 Alexander Warnecke <awarnecke002@hotmail.com>
> + * Copyright (c) 2023 Manuel Traut <manut@mecka.net>
> + * Copyright (c) 2023 Dang Huynh <danct12@riseup.net>
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <drm/drm_connector.h>
> +#include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_modes.h>
> +#include <drm/drm_panel.h>
> +
> +struct boe_th101mb31ig002 {
> +	struct drm_panel panel;
> +	bool enabled;
> +	bool prepared;

Hi Manuel,

Sorry, I responded to the v1 instead of the latest version. Carrying my 
comment over to here:

If I remember correctly, commit d2aacaf07395bd798373cbec6af05fff4147aff3 
should have introduced prepared/enabled do the drm_panel struct.

Thanks,

Jessica Zhang

> +
> +	struct mipi_dsi_device *dsi;
> +
> +	struct regulator *power;
> +	struct gpio_desc *enable;
> +	struct gpio_desc *reset;
> +
> +	enum drm_panel_orientation orientation;
> +};
> +
> +static void boe_th101mb31ig002_reset(struct boe_th101mb31ig002 *ctx)
> +{
> +	gpiod_direction_output(ctx->reset, 0);
> +	usleep_range(10, 100);
> +	gpiod_direction_output(ctx->reset, 1);
> +	usleep_range(10, 100);
> +	gpiod_direction_output(ctx->reset, 0);
> +	usleep_range(5000, 6000);
> +}
> +
> +static int boe_th101mb31ig002_enable(struct drm_panel *panel)
> +{
> +	struct boe_th101mb31ig002 *ctx = container_of(panel,
> +						      struct boe_th101mb31ig002,
> +						      panel);
> +	struct mipi_dsi_device *dsi = ctx->dsi;
> +	struct device *dev = &dsi->dev;
> +	int ret;
> +
> +	if (ctx->enabled)
> +		return 0;
> +
> +	mipi_dsi_dcs_write_seq(dsi, 0xE0, 0xAB, 0xBA);
> +	mipi_dsi_dcs_write_seq(dsi, 0xE1, 0xBA, 0xAB);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB1, 0x10, 0x01, 0x47, 0xFF);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB2, 0x0C, 0x14, 0x04, 0x50, 0x50, 0x14);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB3, 0x56, 0x53, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB4, 0x33, 0x30, 0x04);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB6, 0xB0, 0x00, 0x00, 0x10, 0x00, 0x10,
> +				    0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB8, 0x05, 0x12, 0x29, 0x49, 0x48, 0x00,
> +				    0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xB9, 0x7C, 0x65, 0x55, 0x49, 0x46, 0x36,
> +				    0x3B, 0x24, 0x3D, 0x3C, 0x3D, 0x5C, 0x4C,
> +				    0x55, 0x47, 0x46, 0x39, 0x26, 0x06, 0x7C,
> +				    0x65, 0x55, 0x49, 0x46, 0x36, 0x3B, 0x24,
> +				    0x3D, 0x3C, 0x3D, 0x5C, 0x4C, 0x55, 0x47,
> +				    0x46, 0x39, 0x26, 0x06);
> +	mipi_dsi_dcs_write_seq(dsi, 0x00, 0xFF, 0x87, 0x12, 0x34, 0x44, 0x44,
> +				    0x44, 0x44, 0x98, 0x04, 0x98, 0x04, 0x0F,
> +				    0x00, 0x00, 0xC1);
> +	mipi_dsi_dcs_write_seq(dsi, 0xC1, 0x54, 0x94, 0x02, 0x85, 0x9F, 0x00,
> +				    0x7F, 0x00, 0x54, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xC2, 0x17, 0x09, 0x08, 0x89, 0x08, 0x11,
> +				    0x22, 0x20, 0x44, 0xFF, 0x18, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xC3, 0x86, 0x46, 0x05, 0x05, 0x1C, 0x1C,
> +				    0x1D, 0x1D, 0x02, 0x1F, 0x1F, 0x1E, 0x1E,
> +				    0x0F, 0x0F, 0x0D, 0x0D, 0x13, 0x13, 0x11,
> +				    0x11, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xC4, 0x07, 0x07, 0x04, 0x04, 0x1C, 0x1C,
> +				    0x1D, 0x1D, 0x02, 0x1F, 0x1F, 0x1E, 0x1E,
> +				    0x0E, 0x0E, 0x0C, 0x0C, 0x12, 0x12, 0x10,
> +				    0x10, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xC6, 0x2A, 0x2A);
> +	mipi_dsi_dcs_write_seq(dsi, 0xC8, 0x21, 0x00, 0x31, 0x42, 0x34, 0x16);
> +	mipi_dsi_dcs_write_seq(dsi, 0xCA, 0xCB, 0x43);
> +	mipi_dsi_dcs_write_seq(dsi, 0xCD, 0x0E, 0x4B, 0x4B, 0x20, 0x19, 0x6B,
> +				    0x06, 0xB3);
> +	mipi_dsi_dcs_write_seq(dsi, 0xD2, 0xE3, 0x2B, 0x38, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xD4, 0x00, 0x01, 0x00, 0x0E, 0x04, 0x44,
> +				    0x08, 0x10, 0x00, 0x00, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xE6, 0x80, 0x01, 0xFF, 0xFF, 0xFF, 0xFF,
> +				    0xFF, 0xFF);
> +	mipi_dsi_dcs_write_seq(dsi, 0xF0, 0x12, 0x03, 0x20, 0x00, 0xFF);
> +	mipi_dsi_dcs_write_seq(dsi, 0xF3, 0x00);
> +
> +	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
> +		return ret;
> +	}
> +
> +	msleep(120);
> +
> +	ret = mipi_dsi_dcs_set_display_on(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to set panel on: %d\n", ret);
> +		return ret;
> +	}
> +
> +	ctx->enabled = true;
> +
> +	return 0;
> +}
> +
> +static int boe_th101mb31ig002_disable(struct drm_panel *panel)
> +{
> +	struct boe_th101mb31ig002 *ctx = container_of(panel,
> +						      struct boe_th101mb31ig002,
> +						      panel);
> +	struct mipi_dsi_device *dsi = ctx->dsi;
> +	struct device *dev = &dsi->dev;
> +	int ret;
> +
> +	if (!ctx->enabled)
> +		return 0;
> +
> +	ret = mipi_dsi_dcs_set_display_off(dsi);
> +	if (ret < 0)
> +		dev_err(dev, "Failed to set panel off: %d\n", ret);
> +
> +	msleep(120);
> +
> +	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> +	if (ret < 0)
> +		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
> +
> +	ctx->enabled = false;
> +
> +	return 0;
> +}
> +
> +static int boe_th101mb31ig002_unprepare(struct drm_panel *panel)
> +{
> +	struct boe_th101mb31ig002 *ctx = container_of(panel,
> +						      struct boe_th101mb31ig002,
> +						      panel);
> +
> +	if (!ctx->prepared)
> +		return 0;
> +
> +	gpiod_set_value_cansleep(ctx->reset, 1);
> +	gpiod_set_value_cansleep(ctx->enable, 0);
> +	regulator_disable(ctx->power);
> +
> +	ctx->prepared = false;
> +
> +	return 0;
> +}
> +
> +static int boe_th101mb31ig002_prepare(struct drm_panel *panel)
> +{
> +	struct boe_th101mb31ig002 *ctx = container_of(panel,
> +						      struct boe_th101mb31ig002,
> +						      panel);
> +	struct device *dev = &ctx->dsi->dev;
> +	int ret;
> +
> +	if (ctx->prepared)
> +		return 0;
> +
> +	ret = regulator_enable(ctx->power);
> +	if (ret) {
> +		dev_err(dev, "Failed to enable power supply: %d\n", ret);
> +		return ret;
> +	}
> +
> +	gpiod_set_value_cansleep(ctx->enable, 1);
> +	msleep(50);
> +	boe_th101mb31ig002_reset(ctx);
> +	boe_th101mb31ig002_enable(panel);
> +
> +	ctx->prepared = true;
> +
> +	return 0;
> +}
> +
> +static const struct drm_display_mode boe_th101mb31ig002_default_mode = {
> +	.clock		= 73500,
> +	.hdisplay	= 800,
> +	.hsync_start	= 800 + 64,
> +	.hsync_end	= 800 + 64 + 16,
> +	.htotal		= 800 + 64 + 16 + 64,
> +	.vdisplay	= 1280,
> +	.vsync_start	= 1280 + 2,
> +	.vsync_end	= 1280 + 2 + 4,
> +	.vtotal		= 1280 + 2 + 4 + 12,
> +	.width_mm	= 135,
> +	.height_mm	= 216,
> +	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
> +};
> +
> +static int boe_th101mb31ig002_get_modes(struct drm_panel *panel,
> +					struct drm_connector *connector)
> +{
> +	struct boe_th101mb31ig002 *ctx = container_of(panel,
> +						      struct boe_th101mb31ig002,
> +						      panel);
> +	struct drm_display_mode *mode;
> +
> +	mode = drm_mode_duplicate(connector->dev,
> +				  &boe_th101mb31ig002_default_mode);
> +	if (!mode) {
> +		dev_err(panel->dev, "Failed to add mode %ux%u@%u\n",
> +			boe_th101mb31ig002_default_mode.hdisplay,
> +			boe_th101mb31ig002_default_mode.vdisplay,
> +			drm_mode_vrefresh(&boe_th101mb31ig002_default_mode));
> +		return -ENOMEM;
> +	}
> +
> +	drm_mode_set_name(mode);
> +
> +	connector->display_info.bpc = 8;
> +	connector->display_info.width_mm = mode->width_mm;
> +	connector->display_info.height_mm = mode->height_mm;
> +
> +	/*
> +	 * TODO: Remove once all drm drivers call
> +	 * drm_connector_set_orientation_from_panel()
> +	 */
> +	drm_connector_set_panel_orientation(connector, ctx->orientation);
> +
> +	drm_mode_probed_add(connector, mode);
> +
> +	return 1;
> +}
> +
> +static enum drm_panel_orientation
> +boe_th101mb31ig002_get_orientation(struct drm_panel *panel)
> +{
> +	struct boe_th101mb31ig002 *ctx = container_of(panel,
> +						      struct boe_th101mb31ig002,
> +						      panel);
> +
> +	return ctx->orientation;
> +}
> +
> +static const struct drm_panel_funcs boe_th101mb31ig002_funcs = {
> +	.prepare = boe_th101mb31ig002_prepare,
> +	.unprepare = boe_th101mb31ig002_unprepare,
> +	.enable = boe_th101mb31ig002_enable,
> +	.disable = boe_th101mb31ig002_disable,
> +	.get_modes = boe_th101mb31ig002_get_modes,
> +	.get_orientation = boe_th101mb31ig002_get_orientation,
> +};
> +
> +static int boe_th101mb31ig002_dsi_probe(struct mipi_dsi_device *dsi)
> +{
> +	struct boe_th101mb31ig002 *ctx;
> +	int ret;
> +
> +	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
> +	if (!ctx)
> +		return -ENOMEM;
> +
> +	ctx->enabled = false;
> +	ctx->prepared = false;
> +
> +	mipi_dsi_set_drvdata(dsi, ctx);
> +	ctx->dsi = dsi;
> +
> +	dsi->lanes = 4;
> +	dsi->format = MIPI_DSI_FMT_RGB888;
> +	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
> +			  MIPI_DSI_MODE_NO_EOT_PACKET |
> +			  MIPI_DSI_MODE_LPM;
> +
> +	ctx->power = devm_regulator_get(&dsi->dev, "power");
> +	if (IS_ERR(ctx->power))
> +		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->power),
> +				     "Failed to get power regulator\n");
> +
> +	ctx->enable = devm_gpiod_get(&dsi->dev, "enable", GPIOD_OUT_LOW);
> +	if (IS_ERR(ctx->enable))
> +		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->enable),
> +				     "Failed to get enable GPIO\n");
> +
> +	ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_HIGH);
> +	if (IS_ERR(ctx->reset))
> +		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),
> +				     "Failed to get reset GPIO\n");
> +
> +	ret = of_drm_get_panel_orientation(dsi->dev.of_node,
> +					   &ctx->orientation);
> +	if (ret)
> +		return dev_err_probe(&dsi->dev, ret,
> +				     "Failed to get orientation\n");
> +
> +	drm_panel_init(&ctx->panel, &dsi->dev, &boe_th101mb31ig002_funcs,
> +		       DRM_MODE_CONNECTOR_DSI);
> +
> +	ret = drm_panel_of_backlight(&ctx->panel);
> +	if (ret)
> +		return ret;
> +
> +	drm_panel_add(&ctx->panel);
> +
> +	ret = mipi_dsi_attach(dsi);
> +	if (ret < 0) {
> +		dev_err_probe(&dsi->dev, ret,
> +			      "Failed to attach panel to DSI host\n");
> +		drm_panel_remove(&ctx->panel);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static void boe_th101mb31ig002_dsi_remove(struct mipi_dsi_device *dsi)
> +{
> +	struct boe_th101mb31ig002 *ctx = mipi_dsi_get_drvdata(dsi);
> +
> +	mipi_dsi_detach(dsi);
> +	drm_panel_remove(&ctx->panel);
> +}
> +
> +static const struct of_device_id boe_th101mb31ig002_of_match[] = {
> +	{ .compatible = "boe,th101mb31ig002-28a", },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, boe_th101mb31ig002_of_match);
> +
> +static struct mipi_dsi_driver boe_th101mb31ig002_driver = {
> +	.driver = {
> +		.name = "boe-th101mb31ig002-28a",
> +		.of_match_table = boe_th101mb31ig002_of_match,
> +	},
> +	.probe = boe_th101mb31ig002_dsi_probe,
> +	.remove = boe_th101mb31ig002_dsi_remove,
> +};
> +module_mipi_dsi_driver(boe_th101mb31ig002_driver);
> +
> +MODULE_AUTHOR("Alexander Warnecke <awarnecke002@hotmail.com>");
> +MODULE_DESCRIPTION("BOE TH101MB31IG002-28A MIPI-DSI LCD panel");
> +MODULE_LICENSE("GPL");
> 
> -- 
> 2.43.0
>