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[media] drxk: Allow to disable I2C Bridge control switch

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On em28xx, tda18271C2 is accessible when the i2c port
is not touched. Touching on it breaks the driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-07-09 21:59:33 -03:00
parent bbc70e647b
commit f1fe1b75d6
4 changed files with 6 additions and 0 deletions
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1
drivers/media/dvb/frontends/drxk.h
View File

@ -7,6 +7,7 @@
struct drxk_config {
u8 adr;
u32 single_master : 1;
u32 no_i2c_bridge : 1;
const char *microcode_name;
};

3
drivers/media/dvb/frontends/drxk_hard.c
View File

@ -2784,6 +2784,8 @@ static int ConfigureI2CBridge(struct drxk_state *state, bool bEnableBridge)
if (state->m_DrxkState == DRXK_POWERED_DOWN)
return -1;
if (state->no_i2c_bridge)
return 0;
do {
status = write16(state, SIO_HI_RA_RAM_PAR_1__A, SIO_HI_RA_RAM_PAR_1_PAR1_SEC_KEY);
if (status < 0)
@ -6360,6 +6362,7 @@ struct dvb_frontend *drxk_attach(const struct drxk_config *config,
state->demod_address = adr;
state->single_master = config->single_master;
state->microcode_name = config->microcode_name;
state->no_i2c_bridge = config->no_i2c_bridge;
mutex_init(&state->mutex);
mutex_init(&state->ctlock);

1
drivers/media/dvb/frontends/drxk_hard.h
View File

@ -330,6 +330,7 @@ struct drxk_state {
/* Configurable parameters at the driver */
u32 single_master : 1; /* Use single master i2c mode */
u32 no_i2c_bridge : 1; /* Tuner is not on port 1, don't use I2C bridge */
const char *microcode_name;
};

1
drivers/media/video/em28xx/em28xx-dvb.c
View File

@ -304,6 +304,7 @@ static struct drxd_config em28xx_drxd = {
struct drxk_config terratec_h5_drxk = {
.adr = 0x29,
.single_master = 1,
.no_i2c_bridge = 1,
.microcode_name = "terratec_h5.fw",
};