diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-09-21 18:08:20 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-12-03 12:27:32 +0100 |
| commit | ebc0bc270e09671b245ebc0bd3e99138bd16e2be (patch) | |
| tree | 229ac35ff7429b9e80b846f33b4f412527340a9b /drivers/media | |
| parent | 2b5b9af811ae0b1376d5ac87cac26757d773c317 (diff) | |
| download | linux-ebc0bc270e09671b245ebc0bd3e99138bd16e2be.tar.gz | |
media: ccs: Use longer pre-I²C sleep for CCS compliant devices
Longer idle period is required on I²C bus before the first transaction after lifting xshutdown. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 863295b8fb5c..5014aa0d7969 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -1300,6 +1300,7 @@ static int ccs_power_on(struct device *dev) */ struct ccs_sensor *sensor = container_of(ssd, struct ccs_sensor, ssds[0]); + const struct ccs_device *ccsdev = device_get_match_data(dev); unsigned int sleep; int rval; @@ -1320,7 +1321,11 @@ static int ccs_power_on(struct device *dev) gpiod_set_value(sensor->reset, 0); gpiod_set_value(sensor->xshutdown, 1); - sleep = SMIAPP_RESET_DELAY(sensor->hwcfg.ext_clk); + if (ccsdev->flags & CCS_DEVICE_FLAG_IS_SMIA) + sleep = SMIAPP_RESET_DELAY(sensor->hwcfg.ext_clk); + else + sleep = 5000; + usleep_range(sleep, sleep); /* |