V4L/DVB (12313): stv6110: Read registers through one time i2c_transfer calling
Signed-off-by: Igor M. Liplianin <liplianin@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Родитель
fc7e4a3e72
Коммит
c846121058
|
@ -101,35 +101,25 @@ static int stv6110_read_regs(struct dvb_frontend *fe, u8 regs[],
|
||||||
struct stv6110_priv *priv = fe->tuner_priv;
|
struct stv6110_priv *priv = fe->tuner_priv;
|
||||||
int rc;
|
int rc;
|
||||||
u8 reg[] = { start };
|
u8 reg[] = { start };
|
||||||
struct i2c_msg msg_wr = {
|
struct i2c_msg msg[] = {
|
||||||
.addr = priv->i2c_address,
|
{
|
||||||
.flags = 0,
|
.addr = priv->i2c_address,
|
||||||
.buf = reg,
|
.flags = 0,
|
||||||
.len = 1,
|
.buf = reg,
|
||||||
|
.len = 1,
|
||||||
|
}, {
|
||||||
|
.addr = priv->i2c_address,
|
||||||
|
.flags = I2C_M_RD,
|
||||||
|
.buf = regs,
|
||||||
|
.len = len,
|
||||||
|
},
|
||||||
};
|
};
|
||||||
|
|
||||||
struct i2c_msg msg_rd = {
|
|
||||||
.addr = priv->i2c_address,
|
|
||||||
.flags = I2C_M_RD,
|
|
||||||
.buf = regs,
|
|
||||||
.len = len,
|
|
||||||
};
|
|
||||||
/* write subaddr */
|
|
||||||
if (fe->ops.i2c_gate_ctrl)
|
if (fe->ops.i2c_gate_ctrl)
|
||||||
fe->ops.i2c_gate_ctrl(fe, 1);
|
fe->ops.i2c_gate_ctrl(fe, 1);
|
||||||
|
|
||||||
rc = i2c_transfer(priv->i2c, &msg_wr, 1);
|
rc = i2c_transfer(priv->i2c, msg, 2);
|
||||||
if (rc != 1)
|
if (rc != 2)
|
||||||
dprintk("%s: i2c error\n", __func__);
|
|
||||||
|
|
||||||
if (fe->ops.i2c_gate_ctrl)
|
|
||||||
fe->ops.i2c_gate_ctrl(fe, 0);
|
|
||||||
/* read registers */
|
|
||||||
if (fe->ops.i2c_gate_ctrl)
|
|
||||||
fe->ops.i2c_gate_ctrl(fe, 1);
|
|
||||||
|
|
||||||
rc = i2c_transfer(priv->i2c, &msg_rd, 1);
|
|
||||||
if (rc != 1)
|
|
||||||
dprintk("%s: i2c error\n", __func__);
|
dprintk("%s: i2c error\n", __func__);
|
||||||
|
|
||||||
if (fe->ops.i2c_gate_ctrl)
|
if (fe->ops.i2c_gate_ctrl)
|
||||||
|
|
Загрузка…
Ссылка в новой задаче