V4L/DVB (7027): tda18271: put the device in standby mode during sleep()
Add function, tda18271_set_standby_mode.
During sleep, enter standby mode with slave tuner output enabled,
loop through on and xtal oscillator on.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
index c254ac3..c8ab1fd 100644
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -201,8 +201,7 @@
u8 dc_over_dt, rf_tab;
/* power up */
- regs[R_EP3] &= ~0xe0; /* sm = 0, sm_lt = 0, sm_xt = 0 */
- tda18271_write_regs(fe, R_EP3, 1);
+ tda18271_set_standby_mode(fe, 0, 0, 0);
/* read die current temperature */
tm_current = tda18271_read_thermometer(fe);
@@ -256,9 +255,7 @@
regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
/* POR mode */
- regs[R_EP3] &= ~0xe0; /* clear sm, sm_lt, sm_xt */
- regs[R_EP3] |= 0x80; /* sm = 1, sm_lt = 0, sm_xt = 0 */
- tda18271_write_regs(fe, R_EP3, 1);
+ tda18271_set_standby_mode(fe, 1, 0, 0);
/* disable 1.5 MHz low pass filter */
regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
@@ -610,6 +607,9 @@
mutex_lock(&priv->lock);
+ /* power up */
+ tda18271_set_standby_mode(fe, 0, 0, 0);
+
/* initialization */
tda18271_ir_cal_init(fe);
@@ -953,6 +953,21 @@
return ret;
}
+static int tda18271_sleep(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+
+ mutex_lock(&priv->lock);
+
+ /* standby mode w/ slave tuner output
+ * & loop thru & xtal oscillator on */
+ tda18271_set_standby_mode(fe, 1, 0, 0);
+
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
static int tda18271_release(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
@@ -1096,6 +1111,7 @@
.frequency_step = 62500
},
.init = tda18271_init,
+ .sleep = tda18271_sleep,
.set_params = tda18271_set_params,
.set_analog_params = tda18271_set_analog_params,
.release = tda18271_release,