[PATCH 5.10 201/406] media: ad5820: Drop unsupported ad5823 from i2c_ and of_device_id tables

Greg Kroah-Hartman
2023-09-17T19:31:38Z

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit f126ff7e4024f6704e6ec0d4137037568708a3c7 ]

The supported ad5820 and ad5821 VCMs both use a single 16 bit register
which is written by sending 2 bytes with the data directly after sending
the i2c-client address.

The ad5823 OTOH has a more typical i2c / smbus device setup with multiple
8 bit registers where the first byte send after the i2c-client address is
the register address and the actual data only starts from the second byte
after the i2c-client address.

The ad5823 i2c_ and of_device_id-s was added at the same time as
the ad5821 ids with as rationale:

"""
Some camera modules also refer that AD5823 is a replacement of AD5820:
https://download.kamami.com/p564094-OV8865_DS.pdf
"""

The AD5823 may be an electrical and functional replacement of the AD5820,
but from a software pov it is not compatible at all and it is going to
need its own driver, drop its id from the ad5820 driver.

Fixes: b8bf73136bae ("media: ad5820: Add support for ad5821 and ad5823")
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Ricardo Ribalda Delgado <ribalda@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/i2c/ad5820.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/media/i2c/ad5820.c b/drivers/media/i2c/ad5820.c
index f55322eebf6d0..d2c69ee27f008 100644
--- a/drivers/media/i2c/ad5820.c
+++ b/drivers/media/i2c/ad5820.c
@@ -359,7 +359,6 @@ static int ad5820_remove(struct i2c_client *client)
static const struct i2c_device_id ad5820_id_table[] = {
{ "ad5820", 0 },
{ "ad5821", 0 },
- { "ad5823", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ad5820_id_table);
@@ -367,7 +366,6 @@ MODULE_DEVICE_TABLE(i2c, ad5820_id_table);
static const struct of_device_id ad5820_of_table[] = {
{ .compatible = "adi,ad5820" },
{ .compatible = "adi,ad5821" },
- { .compatible = "adi,ad5823" },
{ }
};
MODULE_DEVICE_TABLE(of, ad5820_of_table);
--
2.40.1