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[media] saa7164: I2C improvements for upcoming HVR2255/2205 boards

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SI2168/SI2157 issue single byte address reads. Add support
for these.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Steven Toth 2015-03-23 15:37:32 -03:00 committed by Mauro Carvalho Chehab
parent 5f5859d1c1
commit 5f954b5be4
1 changed files with 4 additions and 3 deletions
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7
drivers/media/pci/saa7164/saa7164-i2c.c
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@ -39,9 +39,10 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
dprintk(DBGLVL_I2C, "%s(num = %d) addr = 0x%02x len = 0x%x\n",
__func__, num, msgs[i].addr, msgs[i].len);
if (msgs[i].flags & I2C_M_RD) {
/* Unsupported - Yet*/
printk(KERN_ERR "%s() Unsupported - Yet\n", __func__);
continue;
retval = saa7164_api_i2c_read(bus,
msgs[i].addr,
0 /* reglen */,
0 /* reg */, msgs[i].len, msgs[i].buf);
} else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) &&
msgs[i].addr == msgs[i + 1].addr) {
/* write then read from same address */