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Date: Fri, 14 Jun 2024 20:25:35 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Zhaoxiong Lv <lvzhaoxiong@huaqin.corp-partner.google.com>
Cc: dmitry.torokhov@gmail.com, robh@kernel.org, 
	krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jikos@kernel.org, 
	benjamin.tissoires@redhat.co, dianders@google.com, hsinyi@google.com, 
	dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/2] drm/panel: starry-er88577: add new panel driver
Message-ID: <xiv3rvzpx7l2esosggybp6pheoa4zg3ew6vnhjxewnmvkdy73o@jflkmq77lxxn>
References: <20240614145609.25432-1-lvzhaoxiong@huaqin.corp-partner.google.com>
 <20240614145609.25432-3-lvzhaoxiong@huaqin.corp-partner.google.com>
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In-Reply-To: <20240614145609.25432-3-lvzhaoxiong@huaqin.corp-partner.google.com>

On Fri, Jun 14, 2024 at 10:56:09PM GMT, Zhaoxiong Lv wrote:
> The bias IC of this starry-er88577 panel is placed
> on the panel side, so when the panel is powered on,
> there is no need to control AVDD and AVEE in the driver,
> only 3.3v and reset are needed.
> 
> Signed-off-by: Zhaoxiong Lv <lvzhaoxiong@huaqin.corp-partner.google.com>
> 
> ---
> 
> Chage since V3:
> 
> -  Separate Starry-er88577 from the panel-kingdisplay-kd101ne3 driver.
> -  Use mipi_dsi_dcs_set_display_on_multi().
> -  Use mipi_dsi_dcs_exit_sleep_mode_multi() and mipi_dsi_msleep().
> 
> v2: https://lore.kernel.org/all/20240601084528.22502-5-lvzhaoxiong@huaqin.corp-partner.google.com/
> 
> Chage since V2:
> 
> -  Add compatible for Starry er88577 in panel-kingdisplay-kd101ne3 drivers.
> ---
>  drivers/gpu/drm/panel/Kconfig                |   9 +
>  drivers/gpu/drm/panel/Makefile               |   1 +
>  drivers/gpu/drm/panel/panel-starry-er88577.c | 343 +++++++++++++++++++
>  3 files changed, 353 insertions(+)
>  create mode 100644 drivers/gpu/drm/panel/panel-starry-er88577.c
> 
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index e54f6f5604ed..a52aa2552ab8 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -781,6 +781,15 @@ config DRM_PANEL_SITRONIX_ST7789V
>  	  Say Y here if you want to enable support for the Sitronix
>  	  ST7789V controller for 240x320 LCD panels
>  
> +config DRM_PANEL_STARRY_ER88577
> +	tristate "Starry er88577 panel"
> +	depends on OF
> +	depends on DRM_MIPI_DSI
> +	depends on BACKLIGHT_CLASS_DEVICE
> +	help
> +	  Say Y if you want to enable support for panels based on the
> +	  Starry er88577 controller.
> +
>  config DRM_PANEL_SONY_ACX565AKM
>  	tristate "Sony ACX565AKM panel"
>  	depends on GPIOLIB && OF && SPI
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index f0203f6e02f4..ecd843a6dc6e 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -81,6 +81,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LS060T1SX01) += panel-sharp-ls060t1sx01.o
>  obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
>  obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
>  obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
> +obj-$(CONFIG_DRM_PANEL_STARRY_ER88577) += panel-starry-er88577.o
>  obj-$(CONFIG_DRM_PANEL_SYNAPTICS_R63353) += panel-synaptics-r63353.o
>  obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
>  obj-$(CONFIG_DRM_PANEL_SONY_TD4353_JDI) += panel-sony-td4353-jdi.o
> diff --git a/drivers/gpu/drm/panel/panel-starry-er88577.c b/drivers/gpu/drm/panel/panel-starry-er88577.c
> new file mode 100644
> index 000000000000..a8250a464883
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-starry-er88577.c
> @@ -0,0 +1,343 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Panels based on the JD9365DA display controller.
> + * Author: Zhaoxiong Lv <lvzhaoxiong@huaqin.corp-partner.google.com>
> + */
> +
> +#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_connector.h>
> +#include <drm/drm_crtc.h>
> +#include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_panel.h>
> +
> +#include <video/mipi_display.h>
> +#include <drm/drm_probe_helper.h>
> +
> +struct starry_panel;
> +
> +struct panel_desc {
> +	const struct drm_display_mode *modes;
> +	unsigned int bpc;
> +	unsigned long mode_flags;
> +	enum mipi_dsi_pixel_format format;
> +	const struct panel_init_cmd *init_cmds;
> +	int (*init)(struct starry_panel *starry);
> +	unsigned int lanes;
> +	bool discharge_on_disable;
> +	bool lp11_before_reset;
> +	unsigned int power_off_delay_ms;
> +};
> +
> +struct starry_panel {
> +	struct drm_panel base;
> +	struct mipi_dsi_device *dsi;
> +
> +	const struct panel_desc *desc;
> +
> +	enum drm_panel_orientation orientation;
> +	struct regulator *vccio;
> +	struct gpio_desc *reset;
> +};
> +
> +static int starry_er88577_init(struct starry_panel *starry)
> +{
> +	struct mipi_dsi_multi_context dsi_ctx = { .dsi = starry->dsi };
> +
> +	/* T5:HWreset to init_code >= 120ms */
> +	mipi_dsi_msleep(dsi_ctx, 120);
> +
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe0, 0xab, 0xba);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe1, 0xba, 0xab);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb1, 0x10, 0x01, 0x47, 0xff);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb2, 0x0c, 0x14, 0x04, 0x50, 0x50, 0x14);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb3, 0x56, 0x53, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb4, 0x33, 0x30, 0x04);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb6, 0xb0, 0x00, 0x00, 0x10, 0x00, 0x10, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb8, 0x05, 0x12, 0x29, 0x49, 0x40);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb9, 0x7c, 0x61, 0x4f, 0x42, 0x3e, 0x2d, 0x31,
> +				     0x1a, 0x33, 0x33, 0x33, 0x52, 0x40, 0x47, 0x38, 0x34, 0x26,
> +				     0x0e, 0x06, 0x7c, 0x61, 0x4f, 0x42, 0x3e, 0x2d, 0x31, 0x1a,
> +				     0x33, 0x33, 0x33, 0x52, 0x40, 0x47, 0x38, 0x34, 0x26, 0x0e,
> +				     0x06);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0, 0xcc, 0x76, 0x12, 0x34, 0x44, 0x44, 0x44,
> +				     0x44, 0x98, 0x04, 0x98, 0x04, 0x0f, 0x00, 0x00, 0xc1);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc1, 0x54, 0x94, 0x02, 0x85, 0x9f, 0x00, 0x6f,
> +				     0x00, 0x54, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x17, 0x09, 0x08, 0x89, 0x08, 0x11, 0x22,
> +				     0x20, 0x44, 0xff, 0x18, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc3, 0x87, 0x47, 0x05, 0x05, 0x1c, 0x1c, 0x1d,
> +				     0x1d, 0x02, 0x1e, 0x1e, 0x1f, 0x1f, 0x0f, 0x0f, 0x0d, 0x0d,
> +				     0x13, 0x13, 0x11, 0x11, 0x24);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc4, 0x06, 0x06, 0x04, 0x04, 0x1c, 0x1c, 0x1d,
> +				     0x1d, 0x02, 0x1e, 0x1e, 0x1f, 0x1f, 0x0e, 0x0e, 0x0c, 0x0c,
> +				     0x12, 0x12, 0x10, 0x10, 0x24);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc8, 0x21, 0x00, 0x31, 0x42, 0x34, 0x16);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xca, 0xcb, 0x43);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xcd, 0x0e, 0x4b, 0x4b, 0x20, 0x19, 0x6b, 0x06,
> +				     0xb3);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xd2, 0xe3, 0x2b, 0x38, 0x08);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xd4, 0x00, 0x01, 0x00, 0x0e, 0x04, 0x44, 0x08,
> +				     0x10, 0x00, 0x00, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe6, 0x80, 0x09, 0xff, 0xff, 0xff, 0xff, 0xff,
> +				     0xff);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x12, 0x03, 0x20, 0x00, 0xff);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf3, 0x00);

This looks pretty close to panel-boe-th101mb31ig002-28a.c

> +
> +	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> +


-- 
With best wishes
Dmitry