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authorSakari Ailus2012-04-22 09:30:19 -0300
committerMauro Carvalho Chehab2012-05-20 12:46:02 -0300
commit98add8e80764f49219de354a867f4cf8ade94ba8 (patch)
treed66026b7e26b3f194976743b567d62f6e8780a03 /drivers/media
parentceb9e30e9f4a892997a61f1f5a30bc5b561c9e67 (diff)
[media] smiapp: Use 8-bit reads only before identifying the sensor
Some sensors only allow 8-bit access, so use safe 8-bit access before the sensor has been identified. Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/smiapp/smiapp-core.c63
1 files changed, 34 insertions, 29 deletions
diff --git a/drivers/media/video/smiapp/smiapp-core.c b/drivers/media/video/smiapp/smiapp-core.c
index de5c94762916..3bf086f836fb 100644
--- a/drivers/media/video/smiapp/smiapp-core.c
+++ b/drivers/media/video/smiapp/smiapp-core.c
@@ -2197,51 +2197,56 @@ static int smiapp_identify_module(struct v4l2_subdev *subdev)
minfo->name = SMIAPP_NAME;
/* Module info */
- rval = smiapp_read(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
- &minfo->manufacturer_id);
+ rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
+ &minfo->manufacturer_id);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U16_MODEL_ID,
- &minfo->model_id);
+ rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID,
+ &minfo->model_id);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
- &minfo->revision_number_major);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
+ &minfo->revision_number_major);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
- &minfo->revision_number_minor);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
+ &minfo->revision_number_minor);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_MODULE_DATE_YEAR,
- &minfo->module_year);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_MODULE_DATE_YEAR,
+ &minfo->module_year);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_MODULE_DATE_MONTH,
- &minfo->module_month);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_MODULE_DATE_MONTH,
+ &minfo->module_month);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
- &minfo->module_day);
+ rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
+ &minfo->module_day);
/* Sensor info */
if (!rval)
- rval = smiapp_read(sensor,
- SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
- &minfo->sensor_manufacturer_id);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
+ &minfo->sensor_manufacturer_id);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U16_SENSOR_MODEL_ID,
- &minfo->sensor_model_id);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U16_SENSOR_MODEL_ID,
+ &minfo->sensor_model_id);
if (!rval)
- rval = smiapp_read(sensor,
- SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
- &minfo->sensor_revision_number);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
+ &minfo->sensor_revision_number);
if (!rval)
- rval = smiapp_read(sensor,
- SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
- &minfo->sensor_firmware_version);
+ rval = smiapp_read_8only(sensor,
+ SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
+ &minfo->sensor_firmware_version);
/* SMIA */
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_SMIA_VERSION,
- &minfo->smia_version);
+ rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
+ &minfo->smia_version);
if (!rval)
- rval = smiapp_read(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
- &minfo->smiapp_version);
+ rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
+ &minfo->smiapp_version);
if (rval) {
dev_err(&client->dev, "sensor detection failed\n");