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authorThomas Kaiser <linux-dvb AT kaiser-linux.li>2006-04-27 21:45:20 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-06-25 01:59:46 -0300
commitb8d4c235d50f8512bbc9d67730c24da3309b0307 (patch)
tree9af461a3b198bfd6856ab510044363b34a7d7be4 /drivers/media/dvb/frontends/stv0297.c
parent21c2858235a81ce4fa1862432eb0c98d8dbdee1e (diff)
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.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/drivers/media/dvb/frontends/stv0297.c b/drivers/media/dvb/frontends/stv0297.c
index c8c3b74f995..98b95a205fd 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;