From: David Lechner <david@lechnology.com>
To: "Noralf Trønnes" <noralf@tronnes.org>, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 09/10] drm/tinydrm/mipi-dbi: Add mipi_dbi_init_with_formats()
Date: Wed, 17 Jul 2019 15:38:31 -0500 [thread overview]
Message-ID: <87f5977a-cd21-2ded-496a-cc175e68c092@lechnology.com> (raw)
In-Reply-To: <20190717115817.30110-10-noralf@tronnes.org>
On 7/17/19 6:58 AM, Noralf Trønnes wrote:
> The MIPI DBI standard support more pixel formats than what this helper
> supports. Add an init function that lets the driver use different
> format(s). This avoids open coding mipi_dbi_init() in st7586.
>
> st7586 sets preferred_depth but this is not necessary since it only
> supports one format.
Although that might not always be the case. FYI, we are finding that
having XRGB8888 for a 2bpp grayscale display is not the greatest. When
we want to do direct drawing on the screen, we haven't found very good
support in existing graphics libraries for embedded systems for this
format. If I had more free time, I would like to look at adding
grayscale support to DRM.
>
> Cc: David Lechner <david@lechnology.com>
> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
> ---
Acked-by: David Lechner <david@lechnology.com>
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next prev parent reply other threads:[~2019-07-17 20:38 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-17 11:58 [PATCH 00/10] drm/tinydrm: Remove tinydrm.ko Noralf Trønnes
2019-07-17 11:58 ` [PATCH 01/10] drm: Add SPI connector type Noralf Trønnes
2019-07-17 19:24 ` David Lechner
2019-07-19 9:17 ` Daniel Vetter
2019-07-19 12:34 ` Noralf Trønnes
2019-07-19 12:39 ` Daniel Vetter
2019-07-17 11:58 ` [PATCH 02/10] drm/tinydrm: Use spi_is_bpw_supported() Noralf Trønnes
2019-07-17 11:58 ` [PATCH 03/10] drm/tinydrm: Remove spi debug buffer dumping Noralf Trønnes
2019-07-17 11:58 ` [PATCH 04/10] drm/tinydrm: Remove tinydrm_spi_max_transfer_size() Noralf Trønnes
2019-07-17 11:58 ` [PATCH 05/10] drm/tinydrm: Clean up tinydrm_spi_transfer() Noralf Trønnes
2019-07-17 13:09 ` Sam Ravnborg
2019-07-17 16:18 ` Noralf Trønnes
2019-07-17 18:13 ` Sam Ravnborg
2019-07-17 19:37 ` David Lechner
2019-07-17 11:58 ` [PATCH 06/10] drm/tinydrm: Move tinydrm_spi_transfer() Noralf Trønnes
2019-07-17 13:15 ` Sam Ravnborg
2019-07-17 16:20 ` Noralf Trønnes
2019-07-17 19:48 ` David Lechner
2019-07-18 12:14 ` Noralf Trønnes
2019-07-25 14:16 ` Noralf Trønnes
2019-07-25 14:29 ` David Lechner
2019-07-17 11:58 ` [PATCH 07/10] drm/tinydrm: Move tinydrm_machine_little_endian() Noralf Trønnes
2019-07-17 20:09 ` David Lechner
2019-07-18 12:20 ` Noralf Trønnes
2019-07-17 11:58 ` [PATCH 08/10] drm/tinydrm/repaper: Don't use tinydrm_display_pipe_init() Noralf Trønnes
2019-07-17 11:58 ` [PATCH 09/10] drm/tinydrm/mipi-dbi: Add mipi_dbi_init_with_formats() Noralf Trønnes
2019-07-17 20:38 ` David Lechner [this message]
2019-07-17 11:58 ` [PATCH 10/10] drm/tinydrm: Move tinydrm_display_pipe_init() to mipi-dbi Noralf Trønnes
2019-07-17 13:34 ` Sam Ravnborg
2019-07-17 20:46 ` David Lechner
2019-07-18 12:27 ` Noralf Trønnes
2019-07-17 13:31 ` [PATCH 00/10] drm/tinydrm: Remove tinydrm.ko Sam Ravnborg
2019-07-17 16:22 ` Noralf Trønnes
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