From: Sam Ravnborg <sam@ravnborg.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: devicetree@vger.kernel.org,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
dri-devel@lists.freedesktop.org, Rob Herring <robh+dt@kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
Maxime Ripard <mripard@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>
Subject: Re: [PATCH 3/7] drm/panel: sitronix-st7789v: Specify the expected bus format
Date: Sat, 10 Jun 2023 22:12:46 +0200 [thread overview]
Message-ID: <20230610201246.GD1041001@ravnborg.org> (raw)
In-Reply-To: <20230609145951.853533-4-miquel.raynal@bootlin.com>
On Fri, Jun 09, 2023 at 04:59:47PM +0200, Miquel Raynal wrote:
> The LCD controller supports RGB444, RGB565 and RGB888. The value that is
> written in the COLMOD register indicates using RGB888, so let's clearly
> specify the in-use bus format.
Confused.
MEDIA_BUS_FMT_RGB666_1X18 assumes 6 bits per color.
But RGB888 is 8 bits per color.
Something that I have forgotten, or is this inconsistent?
Sam
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
> drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
> index e9ca7ebb458a..0abb45bea18d 100644
> --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
> +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
> @@ -6,6 +6,7 @@
> #include <linux/delay.h>
> #include <linux/gpio/consumer.h>
> #include <linux/module.h>
> +#include <linux/media-bus-format.h>
> #include <linux/regulator/consumer.h>
> #include <linux/spi/spi.h>
>
> @@ -170,6 +171,7 @@ static int st7789v_get_modes(struct drm_panel *panel,
> struct drm_connector *connector)
> {
> struct drm_display_mode *mode;
> + u32 bus_format = MEDIA_BUS_FMT_RGB666_1X18;
>
> mode = drm_mode_duplicate(connector->dev, &default_mode);
> if (!mode) {
> @@ -186,6 +188,8 @@ static int st7789v_get_modes(struct drm_panel *panel,
>
> connector->display_info.width_mm = 61;
> connector->display_info.height_mm = 103;
> + drm_display_info_set_bus_formats(&connector->display_info,
> + &bus_format, 1);
>
> return 1;
> }
> --
> 2.34.1
next prev parent reply other threads:[~2023-06-10 20:12 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-09 14:59 [PATCH 0/7] drm/panel: sitronix-st7789v: Support ET028013DMA panel Miquel Raynal
2023-06-09 14:59 ` [PATCH 1/7] drm/panel: sitronix-st7789v: Prevent core spi warnings Miquel Raynal
2023-06-10 20:06 ` Sam Ravnborg
2023-06-13 6:15 ` Michael Riesch
2023-06-13 6:56 ` Miquel Raynal
2023-06-14 23:22 ` Sebastian Reichel
2023-06-15 5:43 ` Sam Ravnborg
2023-06-15 12:58 ` Sebastian Reichel
2023-06-09 14:59 ` [PATCH 2/7] drm/panel: sitronix-st7789v: Use 9 bits per spi word by default Miquel Raynal
2023-06-10 20:09 ` Sam Ravnborg
2023-06-09 14:59 ` [PATCH 3/7] drm/panel: sitronix-st7789v: Specify the expected bus format Miquel Raynal
2023-06-10 20:12 ` Sam Ravnborg [this message]
2023-06-16 9:56 ` Miquel Raynal
2023-06-12 8:44 ` Maxime Ripard
2023-06-09 14:59 ` [PATCH 4/7] drm/panel: sitronix-st7789v: Use platform data Miquel Raynal
2023-06-10 20:15 ` Sam Ravnborg
2023-06-09 14:59 ` [PATCH 5/7] dt-bindings: display: st7789v: Add the edt, et028013dma panel compatible Miquel Raynal
2023-06-09 14:59 ` [PATCH 6/7] drm/panel: sitronix-st7789v: Add EDT ET028013DMA panel support Miquel Raynal
2023-06-10 20:22 ` Sam Ravnborg
2023-06-12 8:51 ` Maxime Ripard
2023-06-16 10:01 ` Miquel Raynal
2023-06-09 14:59 ` [PATCH 7/7] drm/panel: sitronix-st7789v: Check display ID Miquel Raynal
2023-06-10 20:45 ` Sam Ravnborg
2023-06-14 23:27 ` Sebastian Reichel
2023-06-16 10:13 ` Miquel Raynal
2023-06-16 13:38 ` Sebastian Reichel
2023-06-13 6:25 ` Michael Riesch
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