6.4-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 50a7bad4e0a37d7018ab6fe843dd84bc6b2ecf72 ]
The index into ov2680_hv_flip_bayer_order[] should be 0-3, but ov2680_bayer_order() was using 0 + BIT(2) + (BIT(2) << 1) as max index, while the intention was to use: 0 + 1 + 2 as max index.
Fix the index calculation in ov2680_bayer_order(), while at it also just use the ctrl values rather then reading them back using a slow i2c-read transaction.
This also allows making the function void, since there now are no more i2c-reads to error check.
Note the check for the ctrls being NULL is there to allow adding an ov2680_fill_format() helper later, which will call ov2680_set_bayer_order() during probe() before the ctrls are created.
[Sakari Ailus: Change all users of ov2680_set_bayer_order() here]
Fixes: 3ee47cad3e69 ("media: ov2680: Add Omnivision OV2680 sensor driver") Reviewed-by: Daniel Scally dan.scally@ideasonboard.com Acked-by: Rui Miguel Silva rmfrfs@gmail.com Signed-off-by: Hans de Goede hdegoede@redhat.com 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/ov2680.c | 33 ++++++++++++++------------------- 1 file changed, 14 insertions(+), 19 deletions(-)
diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c index 42efd60c6a96b..7d072448c8530 100644 --- a/drivers/media/i2c/ov2680.c +++ b/drivers/media/i2c/ov2680.c @@ -315,26 +315,17 @@ static void ov2680_power_down(struct ov2680_dev *sensor) usleep_range(5000, 10000); }
-static int ov2680_bayer_order(struct ov2680_dev *sensor) +static void ov2680_set_bayer_order(struct ov2680_dev *sensor) { - u32 format1; - u32 format2; - u32 hv_flip; - int ret; - - ret = ov2680_read_reg(sensor, OV2680_REG_FORMAT1, &format1); - if (ret < 0) - return ret; + int hv_flip = 0;
- ret = ov2680_read_reg(sensor, OV2680_REG_FORMAT2, &format2); - if (ret < 0) - return ret; + if (sensor->ctrls.vflip && sensor->ctrls.vflip->val) + hv_flip += 1;
- hv_flip = (format2 & BIT(2) << 1) | (format1 & BIT(2)); + if (sensor->ctrls.hflip && sensor->ctrls.hflip->val) + hv_flip += 2;
sensor->fmt.code = ov2680_hv_flip_bayer_order[hv_flip]; - - return 0; }
static int ov2680_vflip_enable(struct ov2680_dev *sensor) @@ -345,7 +336,8 @@ static int ov2680_vflip_enable(struct ov2680_dev *sensor) if (ret < 0) return ret;
- return ov2680_bayer_order(sensor); + ov2680_set_bayer_order(sensor); + return 0; }
static int ov2680_vflip_disable(struct ov2680_dev *sensor) @@ -356,7 +348,8 @@ static int ov2680_vflip_disable(struct ov2680_dev *sensor) if (ret < 0) return ret;
- return ov2680_bayer_order(sensor); + ov2680_set_bayer_order(sensor); + return 0; }
static int ov2680_hflip_enable(struct ov2680_dev *sensor) @@ -367,7 +360,8 @@ static int ov2680_hflip_enable(struct ov2680_dev *sensor) if (ret < 0) return ret;
- return ov2680_bayer_order(sensor); + ov2680_set_bayer_order(sensor); + return 0; }
static int ov2680_hflip_disable(struct ov2680_dev *sensor) @@ -378,7 +372,8 @@ static int ov2680_hflip_disable(struct ov2680_dev *sensor) if (ret < 0) return ret;
- return ov2680_bayer_order(sensor); + ov2680_set_bayer_order(sensor); + return 0; }
static int ov2680_test_pattern_set(struct ov2680_dev *sensor, int value)