linux-kernel - Re: [PATCH v2 2/2] gpu: drm: panel: panel-simple: add new display mode for waveshare 7inch touchscreen panel

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Date: Tue, 9 Jan 2024 10:26:13 -0800
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Shengyang Chen <shengyang.chen@...rfivetech.com>,
        <devicetree@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
CC: <neil.armstrong@...aro.org>, <sam@...nborg.org>, <airlied@...il.com>,
        <daniel@...ll.ch>, <maarten.lankhorst@...ux.intel.com>,
        <mripard@...nel.org>, <tzimmermann@...e.de>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <wahrenst@....net>, <dave.stevenson@...pberrypi.com>,
        <thierry.reding@...il.com>, <changhuang.liang@...rfivetech.com>,
        <keith.zhao@...rfivetech.com>, <jack.zhu@...rfivetech.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] gpu: drm: panel: panel-simple: add new display
 mode for waveshare 7inch touchscreen panel



On 1/8/2024 11:09 PM, Shengyang Chen wrote:
> The waveshare 7" 800x480 panel is a clone of Raspberry Pi 7" 800x480 panel
> It also uses a Toshiba TC358762 DSI to DPI bridge chip but it needs different
> timing from Raspberry Pi panel. Add new timing for it.

Hi Shengyang,

The patch itself LGTM, but in case you have to put out a new revision, 
can you please use the "drm/panel: <driver name>:" prefix format that 
other drm/panel commits use?

Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>

Thanks,

Jessica Zhang

> 
> Signed-off-by: Keith Zhao <keith.zhao@...rfivetech.com>
> Signed-off-by: Shengyang Chen <shengyang.chen@...rfivetech.com>
> ---
>   drivers/gpu/drm/panel/panel-simple.c | 28 ++++++++++++++++++++++++++++
>   1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 9367a4572dcf..e0896873ea33 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -4110,6 +4110,31 @@ static const struct panel_desc vl050_8048nt_c01 = {
>   	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
>   };
>   
> +static const struct drm_display_mode waveshare_7inch_mode = {
> +	.clock = 29700000 / 1000,
> +	.hdisplay = 800,
> +	.hsync_start = 800 + 90,
> +	.hsync_end = 800 + 90 + 5,
> +	.htotal = 800 + 90 + 5 + 5,
> +	.vdisplay = 480,
> +	.vsync_start = 480 + 60,
> +	.vsync_end = 480 + 60 + 5,
> +	.vtotal = 480 + 60 + 5 + 5,
> +	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
> +};
> +
> +static const struct panel_desc waveshare_7inch = {
> +	.modes = &waveshare_7inch_mode,
> +	.num_modes = 1,
> +	.bpc = 8,
> +	.size = {
> +		.width = 154,
> +		.height = 86,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> +	.connector_type = DRM_MODE_CONNECTOR_DSI,
> +};
> +
>   static const struct drm_display_mode winstar_wf35ltiacd_mode = {
>   	.clock = 6410,
>   	.hdisplay = 320,
> @@ -4592,6 +4617,9 @@ static const struct of_device_id platform_of_match[] = {
>   	}, {
>   		.compatible = "vxt,vl050-8048nt-c01",
>   		.data = &vl050_8048nt_c01,
> +	}, {
> +		.compatible = "waveshare,7inch-touchscreen",
> +		.data = &waveshare_7inch,
>   	}, {
>   		.compatible = "winstar,wf35ltiacd",
>   		.data = &winstar_wf35ltiacd,
> -- 
> 2.17.1
>