linux-kernel - Re: [PATCH 3/3] drm/panel-simple: add Gopher 2b LCD panel

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Message-ID: <27d31ea9-2a8d-803c-ef3c-e99fdf7192fa@gmail.com>
Date:   Sat, 24 Jul 2021 19:27:40 +0300
From:   Artjom Vejsel <akawolf0@...il.com>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     thierry.reding@...il.com, sam@...nborg.org,
        dri-devel@...ts.freedesktop.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] drm/panel-simple: add Gopher 2b LCD panel

Hello, thanks, Paul. I've sent V2.

On 22/07/2021 17.12, Paul Cercueil wrote:
> Hi Artjom,
>
> Le jeu., juil. 22 2021 at 17:04:32 +0300, Artjom Vejsel 
> <akawolf0@...il.com> a écrit :
>> The Gopher 2b LCD panel is used in Gopher 2b handhelds.
>> It's simple panel with NewVision NV3047 driver,
>> but SPI lines are not connected.
>> It has no specific name, since it's unique to that handhelds.
>> lot name at AliExpress: 4.3 inch 40PIN TFT LCD Screen COG
>> NV3047 Drive IC 480(RGB)*272 No Touch 24Bit RGB Interface
>>
>> Signed-off-by: Artjom Vejsel <akawolf0@...il.com>
>> ---
>>  drivers/gpu/drm/panel/panel-simple.c | 44 ++++++++++++++++++++++++++++
>>  1 file changed, 44 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/panel/panel-simple.c 
>> b/drivers/gpu/drm/panel/panel-simple.c
>> index 9b286bd4444f..9cce6b63a147 100644
>> --- a/drivers/gpu/drm/panel/panel-simple.c
>> +++ b/drivers/gpu/drm/panel/panel-simple.c
>> @@ -4306,6 +4306,47 @@ static const struct panel_desc 
>> yes_optoelectronics_ytc700tlag_05_201c = {
>>      .connector_type = DRM_MODE_CONNECTOR_LVDS,
>>  };
>>
>> +static const struct drm_display_mode 
>> qishenglong_gopher2b_lcd_panel_modes[] = {
>> +    { /* 60 Hz */
>> +        .clock = 10800,
>> +        .hdisplay = 480,
>> +        .hsync_start = 480 + 77,
>> +        .hsync_end = 480 + 77 + 41,
>> +        .htotal = 480 + 77 + 41 + 2,
>> +        .vdisplay = 272,
>> +        .vsync_start = 272 + 16,
>> +        .vsync_end = 272 + 16 + 10,
>> +        .vtotal = 272 + 16 + 10 + 2,
>> +        .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
>> +    },
>> +    { /* 50 Hz */
>> +        .clock = 10800,
>> +        .hdisplay = 480,
>> +        .hsync_start = 480 + 17,
>> +        .hsync_end = 480 + 17 + 41,
>> +        .htotal = 480 + 17 + 41 + 2,
>> +        .vdisplay = 272,
>> +        .vsync_start = 272 + 116,
>> +        .vsync_end = 272 + 116 + 10,
>> +        .vtotal = 272 + 116 + 10 + 2,
>> +        .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
>> +    },
>> +};
>> +
>> +static const struct panel_desc qishenglong_gopher2b_lcd_panel = {
>> +    .modes = qishenglong_gopher2b_lcd_panel_modes,
>> +    .num_modes = ARRAY_SIZE(qishenglong_gopher2b_lcd_panel_modes),
>> +    .num_modes = 1,
>
> Thank you for your patch. From a quick look though, you have 
> .num_modes listed twice here. I believe the second line should be 
> removed.
>
> Cheers,
> -Paul
>
>> +    .bpc = 8,
>> +    .size = {
>> +        .width = 95,
>> +        .height = 54,
>> +    },
>> +    .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
>> +    .bus_flags = DRM_BUS_FLAG_DE_HIGH | 
>> DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
>> +    .connector_type = DRM_MODE_CONNECTOR_DPI,
>> +};
>> +
>>  static const struct drm_display_mode arm_rtsm_mode[] = {
>>      {
>>          .clock = 65000,
>> @@ -4753,6 +4794,9 @@ static const struct of_device_id 
>> platform_of_match[] = {
>>      }, {
>>          .compatible = "yes-optoelectronics,ytc700tlag-05-201c",
>>          .data = &yes_optoelectronics_ytc700tlag_05_201c,
>> +    }, {
>> +        .compatible = "qishenglong,gopher2b-lcd-panel",
>> +        .data = &qishenglong_gopher2b_lcd_panel,
>>      }, {
>>          /* Must be the last entry */
>>          .compatible = "panel-dpi",
>> -- 
>> 2.32.0
>
>