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media: ccs: Use longer pre-I²C sleep for CCS compliant devices

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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>
This commit is contained in:
Sakari Ailus 2020-09-21 18:08:20 +02:00 committed by Mauro Carvalho Chehab
parent 2b5b9af811
commit ebc0bc270e
1 changed files with 6 additions and 1 deletions
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7
drivers/media/i2c/ccs/ccs-core.c
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@ -1300,6 +1300,7 @@ static int ccs_power_on(struct device *dev)
*/ */
struct ccs_sensor *sensor = struct ccs_sensor *sensor =
container_of(ssd, struct ccs_sensor, ssds[0]); container_of(ssd, struct ccs_sensor, ssds[0]);
const struct ccs_device *ccsdev = device_get_match_data(dev);
unsigned int sleep; unsigned int sleep;
int rval; int rval;
@ -1320,7 +1321,11 @@ static int ccs_power_on(struct device *dev)
gpiod_set_value(sensor->reset, 0); gpiod_set_value(sensor->reset, 0);
gpiod_set_value(sensor->xshutdown, 1); 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); usleep_range(sleep, sleep);
/* /*