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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2014-05-26 23:31:28 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-22 17:00:08 +0400 |
| commit | e35ce2e4b2c7657e9e23b618c861c258ce4a57bf (patch) | |
| tree | 2a50919143d370dad88a0c629733273c3ff6d393 /drivers/media/i2c | |
| parent | 385dded8066aec9cb78cfbcc842532dff7946704 (diff) | |
| download | linux-e35ce2e4b2c7657e9e23b618c861c258ce4a57bf.tar.xz | |
[media] tvp5150: Use i2c_smbus_(read|write)_byte_data
X-Patchwork-Delegate: mchehab@redhat.com
Replace the custom I2C read/write implementation with SMBUS functions to
simplify the driver.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/tvp5150.c | 31 |
1 files changed, 11 insertions, 20 deletions
diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index 937e48b3b734..193e7d6c29c8 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -56,38 +56,29 @@ static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) static int tvp5150_read(struct v4l2_subdev *sd, unsigned char addr) { struct i2c_client *c = v4l2_get_subdevdata(sd); - unsigned char buffer[1]; int rc; - struct i2c_msg msg[] = { - { .addr = c->addr, .flags = 0, - .buf = &addr, .len = 1 }, - { .addr = c->addr, .flags = I2C_M_RD, - .buf = buffer, .len = 1 } - }; - - rc = i2c_transfer(c->adapter, msg, 2); - if (rc < 0 || rc != 2) { - v4l2_err(sd, "i2c i/o error: rc == %d (should be 2)\n", rc); - return rc < 0 ? rc : -EIO; + + rc = i2c_smbus_read_byte_data(c, addr); + if (rc < 0) { + v4l2_err(sd, "i2c i/o error: rc == %d\n", rc); + return rc; } - v4l2_dbg(2, debug, sd, "tvp5150: read 0x%02x = 0x%02x\n", addr, buffer[0]); + v4l2_dbg(2, debug, sd, "tvp5150: read 0x%02x = 0x%02x\n", addr, rc); - return (buffer[0]); + return rc; } static inline void tvp5150_write(struct v4l2_subdev *sd, unsigned char addr, unsigned char value) { struct i2c_client *c = v4l2_get_subdevdata(sd); - unsigned char buffer[2]; int rc; - buffer[0] = addr; - buffer[1] = value; - v4l2_dbg(2, debug, sd, "tvp5150: writing 0x%02x 0x%02x\n", buffer[0], buffer[1]); - if (2 != (rc = i2c_master_send(c, buffer, 2))) - v4l2_dbg(0, debug, sd, "i2c i/o error: rc == %d (should be 2)\n", rc); + v4l2_dbg(2, debug, sd, "tvp5150: writing 0x%02x 0x%02x\n", addr, value); + rc = i2c_smbus_write_byte_data(c, addr, value); + if (rc < 0) + v4l2_dbg(0, debug, sd, "i2c i/o error: rc == %d\n", rc); } static void dump_reg_range(struct v4l2_subdev *sd, char *s, u8 init, |