From: Andy Shevchenko <andy@kernel.org>
To: Hans de Goede <hdegoede@redhat.com>
Cc: Daniel Scally <dan.scally@ideasonboard.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Kate Hsuan <hpa@redhat.com>,
linux-media@vger.kernel.org
Subject: Re: [PATCH 08/28] media: Add MIPI CCI register access helper functions
Date: Wed, 7 Jun 2023 23:22:48 +0300 [thread overview]
Message-ID: <ZIDnGGd2OU5sDT1G@smile.fi.intel.com> (raw)
In-Reply-To: <20230607164712.63579-9-hdegoede@redhat.com>
On Wed, Jun 07, 2023 at 06:46:52PM +0200, Hans de Goede wrote:
> The CSI2 specification specifies a standard method to access camera sensor
> registers called "Camera Control Interface (CCI)".
>
> This uses either 8 or 16 bit (big-endian wire order) register addresses
> and supports 8, 16, 24 or 32 bit (big-endian wire order) register widths.
>
> Currently a lot of Linux camera sensor drivers all have their own custom
> helpers for this, often copy and pasted from other drivers.
>
> Add a set of generic helpers for this so that all sensor drivers can
> switch to a single common implementation.
>
> These helpers take an extra optional "int *err" function parameter,
> this can be used to chain a bunch of register accesses together with
> only a single error check at the end, rather then needing to error
> check each individual register access. The first failing call will
> set the contents of err to a non 0 value and all other calls will
> then become no-ops.
So, this version doesn't have updates we discussed previously. Is it only for
reference here?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2023-06-07 20:25 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-07 16:46 [PATCH 00/28] media: ov2680: Bugfixes + ACPI + selection(crop-tgt) API support Hans de Goede
2023-06-07 16:46 ` [PATCH 01/28] media: ov2680: Remove auto-gain and auto-exposure controls Hans de Goede
2023-06-08 12:41 ` Sakari Ailus
2023-06-12 6:53 ` Dan Scally
2023-06-12 7:44 ` Hans de Goede
2023-06-12 7:59 ` Dan Scally
2023-06-12 9:57 ` Andy Shevchenko
2023-06-12 11:30 ` Dan Scally
2023-06-07 16:46 ` [PATCH 02/28] media: ov2680: Fix ov2680_bayer_order() Hans de Goede
2023-06-12 7:22 ` Dan Scally
2023-06-07 16:46 ` [PATCH 03/28] media: ov2680: Fix vflip / hflip set functions Hans de Goede
2023-06-12 7:32 ` Dan Scally
2023-06-12 8:06 ` Hans de Goede
2023-06-12 9:00 ` Laurent Pinchart
2023-06-07 16:46 ` [PATCH 04/28] media: ov2680: Use select VIDEO_V4L2_SUBDEV_API Hans de Goede
2023-06-12 8:20 ` Dan Scally
2023-06-12 8:57 ` Hans de Goede
2023-06-07 16:46 ` [PATCH 05/28] media: ov2680: Don't take the lock for try_fmt calls Hans de Goede
2023-06-08 12:44 ` Sakari Ailus
2023-06-08 12:48 ` Laurent Pinchart
2023-06-08 13:15 ` Sakari Ailus
2023-06-08 13:17 ` Hans de Goede
2023-06-07 16:46 ` [PATCH 06/28] media: ov2680: Add ov2680_fill_format() helper function Hans de Goede
2023-06-07 16:46 ` [PATCH 07/28] media: ov2680: Fix ov2680_set_fmt() which == V4L2_SUBDEV_FORMAT_TRY not working Hans de Goede
2023-06-07 16:46 ` [PATCH 08/28] media: Add MIPI CCI register access helper functions Hans de Goede
2023-06-07 20:22 ` Andy Shevchenko [this message]
2023-06-07 20:23 ` Andy Shevchenko
2023-06-07 16:46 ` [PATCH 09/28] media: ov2680: Convert to new CCI register access helpers Hans de Goede
2023-06-07 16:46 ` [PATCH 10/28] media: ov2680: Store dev instead of i2c_client in ov2680_dev Hans de Goede
2023-06-07 20:43 ` Andy Shevchenko
2023-06-07 16:46 ` [PATCH 11/28] media: ov2680: Check for "powerdown" GPIO con-id before checking for "reset" GPIO con-id Hans de Goede
2023-06-07 16:46 ` [PATCH 12/28] media: ov2680: Add runtime-pm support Hans de Goede
2023-06-07 16:46 ` [PATCH 13/28] media: ov2680: Drop is_enabled flag Hans de Goede
2023-06-07 16:46 ` [PATCH 14/28] media: ov2680: Add support for more clk setups Hans de Goede
2023-06-07 20:51 ` Andy Shevchenko
2023-06-07 16:46 ` [PATCH 15/28] media: ov2680: Add support for 19.2 MHz clock Hans de Goede
2023-06-07 20:53 ` Andy Shevchenko
2023-06-07 16:47 ` [PATCH 16/28] media: ov2680: Add endpoint matching support Hans de Goede
2023-06-07 16:47 ` [PATCH 17/28] media: ov2680: Add support for ACPI enumeration Hans de Goede
2023-06-07 20:57 ` Andy Shevchenko
2023-06-07 16:47 ` [PATCH 18/28] media: ov2680: Fix ov2680_enum_frame_interval() Hans de Goede
2023-06-07 16:47 ` [PATCH 19/28] media: ov2680: Annotate the per mode register setting lists Hans de Goede
2023-06-07 16:47 ` [PATCH 20/28] media: ov2680: Add ov2680_mode struct Hans de Goede
2023-06-07 16:47 ` [PATCH 21/28] media: ov2680: Make setting the mode algorithm based Hans de Goede
2023-06-07 16:47 ` [PATCH 22/28] media: ov2680: Add an __ov2680_get_pad_format() helper function Hans de Goede
2023-06-07 16:47 ` [PATCH 23/28] media: ov2680: Implement selection support Hans de Goede
2023-06-07 21:01 ` Andy Shevchenko
2023-06-07 21:04 ` Andy Shevchenko
2023-06-07 16:47 ` [PATCH 24/28] media: ov2680: Fix exposure and gain ctrls range and default value Hans de Goede
2023-06-07 16:47 ` [PATCH 25/28] media: ov2680: Add a bunch of register tweaks Hans de Goede
2023-06-07 16:47 ` [PATCH 26/28] media: ov2680: Add g_skip_frames op support Hans de Goede
2023-06-07 17:04 ` Laurent Pinchart
2023-06-07 17:49 ` Hans de Goede
2023-06-07 16:47 ` [PATCH 27/28] media: ov2680: Drop unnecessary pad checks Hans de Goede
2023-06-07 16:47 ` [PATCH 28/28] media: ov2680: Read and log sensor revision during probe Hans de Goede
2023-06-09 9:37 ` [PATCH 00/28] media: ov2680: Bugfixes + ACPI + selection(crop-tgt) API support Sakari Ailus
2023-06-09 14:28 ` Hans de Goede
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