V4L/DVB (7351): tuner-simple: add init and sleep methods

taken from dvb-pll

Signed-off-by: Michael Krufky <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/video/tuner-simple.c

···
 	return ret;
 }
 
+static int simple_init(struct dvb_frontend *fe)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	if (priv->tun->initdata) {
+		int ret;
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+
+		ret = tuner_i2c_xfer_send(&priv->i2c_props,
+					  priv->tun->initdata + 1,
+					  priv->tun->initdata[0]);
+		if (ret != priv->tun->initdata[0])
+			return ret;
+	}
+
+	return 0;
+}
+
+static int simple_sleep(struct dvb_frontend *fe)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	if (priv->tun->sleepdata) {
+		int ret;
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+
+		ret = tuner_i2c_xfer_send(&priv->i2c_props,
+					  priv->tun->sleepdata + 1,
+					  priv->tun->sleepdata[0]);
+		if (ret != priv->tun->sleepdata[0])
+			return ret;
+	}
+
+	return 0;
+}
+
 static int simple_release(struct dvb_frontend *fe)
 {
 	struct tuner_simple_priv *priv = fe->tuner_priv;
···
 }
 
 static struct dvb_tuner_ops simple_tuner_ops = {
+	.init              = simple_init,
+	.sleep             = simple_sleep,
 	.set_analog_params = simple_set_params,
 	.set_params        = simple_dvb_set_params,
 	.calc_regs         = simple_dvb_calc_regs,

drivers/media/video/tuner-types.c

···
  *	based on the video standard in use.
  */
 
+/* The following was taken from dvb-pll.c: */
+
+/* Set AGC TOP value to 103 dBuV:
+ *	0x80 = Control Byte
+ *	0x40 = 250 uA charge pump (irrelevant)
+ *	0x18 = Aux Byte to follow
+ *	0x06 = 64.5 kHz divider (irrelevant)
+ *	0x01 = Disable Vt (aka sleep)
+ *
+ *	0x00 = AGC Time constant 2s Iagc = 300 nA (vs 0x80 = 9 nA)
+ *	0x50 = AGC Take over point = 103 dBuV
+ */
+static u8 tua603x_agc103[] = { 2, 0x80|0x40|0x18|0x06|0x01, 0x00|0x50 };
+
+/*	0x04 = 166.67 kHz divider
+ *
+ *	0x80 = AGC Time constant 50ms Iagc = 9 uA
+ *	0x20 = AGC Take over point = 112 dBuV
+ */
+static u8 tua603x_agc112[] = { 2, 0x80|0x40|0x18|0x04|0x01, 0x80|0x20 };
+
 /* 0-9 */
 /* ------------ TUNER_TEMIC_PAL - TEMIC PAL ------------ */
 
···
 		.min    = 16 *  57.00,
 		.max    = 16 * 863.00,
 		.stepsize = 62500,
+		.initdata = tua603x_agc103,
 	},
 	[TUNER_TENA_9533_DI] = { /* Philips PAL */
 		.name   = "Tena TNF9533-D/IF/TNF9533-B/DF",
···
 		.name   = "Philips FMD1216ME MK3 Hybrid Tuner",
 		.params = tuner_philips_fmd1216me_mk3_params,
 		.count  = ARRAY_SIZE(tuner_philips_fmd1216me_mk3_params),
+		.initdata = tua603x_agc112,
+		.sleepdata = (u8[]){ 4, 0x9c, 0x60, 0x85, 0x54 },
 	},
 	[TUNER_LG_TDVS_H06XF] = { /* LGINNOTEK ATSC */
 		.name   = "LG TDVS-H06xF", /* H061F, H062F & H064F */
···
 		.min    = 16 *  54.00,
 		.max    = 16 * 863.00,
 		.stepsize = 62500,
+		.initdata = tua603x_agc103,
 	},
 	[TUNER_YMEC_TVF66T5_B_DFF] = { /* Philips PAL */
 		.name   = "Ymec TVF66T5-B/DFF",

include/media/tuner-types.h

···
 	u16 min;
 	u16 max;
 	u16 stepsize;
+
+	u8 *initdata;
+	u8 *sleepdata;
 };
 
 extern struct tunertype tuners[];