diff options
| -rw-r--r-- | drivers/media/dvb/frontends/stv6110x.c | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/drivers/media/dvb/frontends/stv6110x.c b/drivers/media/dvb/frontends/stv6110x.c index bcfcb65..09e3aef 100644 --- a/drivers/media/dvb/frontends/stv6110x.c +++ b/drivers/media/dvb/frontends/stv6110x.c @@ -58,12 +58,23 @@ static int stv6110x_read_reg(struct stv6110x_state *stv6110x, u8 reg, u8 *data) return 0; } -static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data) +static int stv6110x_write_regs(struct stv6110x_state *stv6110x, int start, u8 data[], int len) { int ret; const struct stv6110x_config *config = stv6110x->config; - u8 buf[] = { reg, data }; - struct i2c_msg msg = { .addr = config->addr, .flags = 0, . buf = buf, .len = 2 }; + u8 buf[len + 1]; + struct i2c_msg msg = { + .addr = config->addr, + .flags = 0, + .buf = buf, + .len = len + 1 + }; + + if (start + len > 8) + return -EINVAL; + + buf[0] = start; + memcpy(&buf[1], data, len); ret = i2c_transfer(stv6110x->i2c, &msg, 1); if (ret != 1) { @@ -74,18 +85,21 @@ static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data) return 0; } +static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data) +{ + return stv6110x_write_regs(stv6110x, reg, &data, 1); +} + static int stv6110x_init(struct dvb_frontend *fe) { struct stv6110x_state *stv6110x = fe->tuner_priv; int ret; - u8 i; - for (i = 0; i < ARRAY_SIZE(stv6110x_regs); i++) { - ret = stv6110x_write_reg(stv6110x, i, stv6110x_regs[i]); - if (ret < 0) { - dprintk(FE_ERROR, 1, "Initialization failed"); - return -1; - } + ret = stv6110x_write_regs(stv6110x, 0, stv6110x_regs, + ARRAY_SIZE(stv6110x_regs)); + if (ret < 0) { + dprintk(FE_ERROR, 1, "Initialization failed"); + return -1; } return 0; |
