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V4L/DVB (5319): Set tda827x to sleep mode after attach

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This change sets the tda827x to sleep mode right after attach in dvb
mode. It is just to save power. For the same reason, the ADC of the
tda10046 gets turned off in sleep mode.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hartmut Hackmann 2007-04-27 12:31:15 -03:00 committed by Mauro Carvalho Chehab
parent 06be3035f9
commit 6871758355
2 changed files with 10 additions and 1 deletions
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2
drivers/media/dvb/frontends/tda1004x.c
View File

@ -503,6 +503,7 @@ static int tda10046_fwupload(struct dvb_frontend* fe)
/* The PLLs need to be reprogrammed after sleep */ /* The PLLs need to be reprogrammed after sleep */
tda10046_init_plls(fe); tda10046_init_plls(fe);
tda1004x_write_mask(state, TDA1004X_CONFADC2, 0xc0, 0);
/* don't re-upload unless necessary */ /* don't re-upload unless necessary */
if (tda1004x_check_upload_ok(state) == 0) if (tda1004x_check_upload_ok(state) == 0)
@ -1170,6 +1171,7 @@ static int tda1004x_sleep(struct dvb_frontend* fe)
tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0x0f, tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0x0f,
(gpio_conf & 0x0f) ^ 0x0a); (gpio_conf & 0x0f) ^ 0x0a);
tda1004x_write_mask(state, TDA1004X_CONFADC2, 0xc0, 0xc0);
tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1); tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1);
break; break;
} }

9
drivers/media/dvb/frontends/tda827x.c
View File

@ -426,6 +426,7 @@ struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
{ {
struct tda827x_priv *priv = NULL; struct tda827x_priv *priv = NULL;
u8 data; u8 data;
u8 sb_msg[] = { 0x30, 0xd0 };
struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD, struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD,
.buf = &data, .len = 1 }; .buf = &data, .len = 1 };
dprintk("%s:\n", __FUNCTION__); dprintk("%s:\n", __FUNCTION__);
@ -446,15 +447,21 @@ struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
priv->i2c_addr = addr; priv->i2c_addr = addr;
priv->i2c_adap = i2c; priv->i2c_adap = i2c;
priv->cfg = cfg; priv->cfg = cfg;
msg.flags = 0;
msg.buf = sb_msg;
msg.len = sizeof(sb_msg);
if ((data & 0x3c) == 0) { if ((data & 0x3c) == 0) {
dprintk("tda827x tuner found\n"); dprintk("tda827x tuner found\n");
memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops)); memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
} else { } else {
dprintk("tda827xa tuner found\n"); dprintk("tda827xa tuner found\n");
memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops)); memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
sb_msg[1] = 0x90;
} }
fe->tuner_priv = priv; fe->tuner_priv = priv;
i2c_transfer(i2c, &msg, 1);
return fe; return fe;
} }
EXPORT_SYMBOL(tda827x_attach); EXPORT_SYMBOL(tda827x_attach);