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| author | Thomas Kaiser <linux-dvb AT kaiser-linux.li> | 2006-04-28 04:45:20 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-06-25 08:59:46 +0400 |
| commit | b8d4c235d50f8512bbc9d67730c24da3309b0307 (patch) | |
| tree | 9af461a3b198bfd6856ab510044363b34a7d7be4 /drivers/media/dvb/frontends/stv0297.c | |
| parent | 21c2858235a81ce4fa1862432eb0c98d8dbdee1e (diff) | |
| download | linux-b8d4c235d50f8512bbc9d67730c24da3309b0307.tar.xz | |
V4L/DVB (3934): Support new dvb-ttusb-budget boards with stv0297
Added config switch to stv0297 to control i2c STOP during write behaviour.
Update frontend init in dvb-ttusb-budget.
Enable i2c STOP on other users of stv0297.
Signed-off-by: Thomas Kaiser <linux-dvb AT kaiser-linux.li>
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends/stv0297.c')
| -rw-r--r-- | drivers/media/dvb/frontends/stv0297.c | 49 |
1 files changed, 31 insertions, 18 deletions
diff --git a/drivers/media/dvb/frontends/stv0297.c b/drivers/media/dvb/frontends/stv0297.c index c8c3b74f9958..98b95a205fd2 100644 --- a/drivers/media/dvb/frontends/stv0297.c +++ b/drivers/media/dvb/frontends/stv0297.c @@ -68,19 +68,25 @@ static int stv0297_readreg(struct stv0297_state *state, u8 reg) int ret; u8 b0[] = { reg }; u8 b1[] = { 0 }; - struct i2c_msg msg[] = { {.addr = state->config->demod_address,.flags = 0,.buf = b0,.len = - 1}, - {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b1,.len = 1} - }; + struct i2c_msg msg[] = { {.addr = state->config->demod_address,.flags = 0,.buf = b0,.len = 1}, + {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b1,.len = 1} + }; // this device needs a STOP between the register and data - if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) { - dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret); - return -1; - } - if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) { - dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret); - return -1; + if (state->config->stop_during_read) { + if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) { + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret); + return -1; + } + if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) { + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret); + return -1; + } + } else { + if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) { + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret); + return -1; + } } return b1[0]; @@ -107,13 +113,20 @@ static int stv0297_readregs(struct stv0297_state *state, u8 reg1, u8 * b, u8 len }; // this device needs a STOP between the register and data - if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) { - dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret); - return -1; - } - if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) { - dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret); - return -1; + if (state->config->stop_during_read) { + if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) { + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret); + return -1; + } + if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) { + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret); + return -1; + } + } else { + if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) { + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret); + return -1; + } } return 0; |