diff options
| author | Frank Schaefer <fschaefer.oss@googlemail.com> | 2013-03-27 20:06:33 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-29 09:39:06 (GMT) |
| commit | 0af0b25a64458c3ee002efe6e7542013b94a268a (patch) | |
| tree | c7e0a54a60ec7e2699eecf33fd88eb3758bbff3b /drivers/media/usb/em28xx | |
| parent | 176013b19e848204895bfcaea8b9b39fba5b26dd (diff) | |
| download | linux-fsl-qoriq-0af0b25a64458c3ee002efe6e7542013b94a268a.tar.xz | |
[media] em28xx: move the probing of Micron sensors to a separate function
Other sensors like the ones from OmniVision need a different probing procedure,
so it makes sense have separate functions for each manufacturer/sensor type.
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/em28xx')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-camera.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c index 2e4856a..d744af6 100644 --- a/drivers/media/usb/em28xx/em28xx-camera.c +++ b/drivers/media/usb/em28xx/em28xx-camera.c @@ -83,9 +83,9 @@ static int em28xx_initialize_mt9m001(struct em28xx *dev) /* - * This method works for webcams with Micron sensors + * Probes Micron sensors with 8 bit address and 16 bit register width */ -int em28xx_detect_sensor(struct em28xx *dev) +static int em28xx_probe_sensor_micron(struct em28xx *dev) { int ret, i; char *name; @@ -96,7 +96,6 @@ int em28xx_detect_sensor(struct em28xx *dev) struct i2c_client client = dev->i2c_client[dev->def_i2c_bus]; dev->em28xx_sensor = EM28XX_NOSENSOR; - /* Probe Micron sensors with 8 bit address and 16 bit register width */ for (i = 0; micron_sensor_addrs[i] != I2C_CLIENT_END; i++) { client.addr = micron_sensor_addrs[i]; /* NOTE: i2c_smbus_read_word_data() doesn't work with BE data */ @@ -167,7 +166,7 @@ int em28xx_detect_sensor(struct em28xx *dev) default: em28xx_info("unknown Micron sensor detected: 0x%04x\n", id); - return -EINVAL; + return 0; } if (dev->em28xx_sensor == EM28XX_NOSENSOR) @@ -182,6 +181,22 @@ int em28xx_detect_sensor(struct em28xx *dev) return -ENODEV; } +/* + * This method works for webcams with Micron sensors + */ +int em28xx_detect_sensor(struct em28xx *dev) +{ + int ret; + + ret = em28xx_probe_sensor_micron(dev); + if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0) { + em28xx_info("No sensor detected\n"); + return -ENODEV; + } + + return 0; +} + int em28xx_init_camera(struct em28xx *dev) { switch (dev->em28xx_sensor) { |