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

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>

2 files changed, 10 insertions, 1 deletions

diff --git a/drivers/media/dvb/frontends/tda1004x.c b/drivers/media/dvb/frontends/tda1004x.c
index dbfc94a9c3f7..3de729b3b4bf 100644
--- a/drivers/media/dvb/frontends/tda1004x.c
+++ b/drivers/media/dvb/frontends/tda1004x.c
@@ -503,6 +503,7 @@ static int tda10046_fwupload(struct dvb_frontend* fe)
 
         /* The PLLs need to be reprogrammed after sleep */
         tda10046_init_plls(fe);
+        tda1004x_write_mask(state, TDA1004X_CONFADC2, 0xc0, 0);
 
         /* don't re-upload unless necessary */
         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,
                                                         (gpio_conf & 0x0f) ^ 0x0a);
 
+                tda1004x_write_mask(state, TDA1004X_CONFADC2, 0xc0, 0xc0);
                 tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1);
                 break;
         }
diff --git a/drivers/media/dvb/frontends/tda827x.c b/drivers/media/dvb/frontends/tda827x.c
index cff2d1fa4094..1fa58c5dac0f 100644
--- a/drivers/media/dvb/frontends/tda827x.c
+++ b/drivers/media/dvb/frontends/tda827x.c
@@ -426,6 +426,7 @@ struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
 {
         struct tda827x_priv *priv = NULL;
         u8 data;
+        u8 sb_msg[] = { 0x30, 0xd0 };
         struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD,
                                .buf = &data, .len = 1 };
         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_adap = i2c;
         priv->cfg = cfg;
+
+        msg.flags = 0;
+        msg.buf = sb_msg;
+        msg.len = sizeof(sb_msg);
+
         if ((data & 0x3c) == 0) {
                 dprintk("tda827x tuner found\n");
                 memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
         } else {
                 dprintk("tda827xa tuner found\n");
                 memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
+                sb_msg[1] = 0x90;
         }
         fe->tuner_priv = priv;
-
+        i2c_transfer(i2c, &msg, 1);
         return fe;
 }
 EXPORT_SYMBOL(tda827x_attach);