V4L/DVB (5544): Budget-av: Make inversion setting configurable, add KNC ONE V1.0 card

Make the inversion setting configurable. The KNC ONE V1.0 uses
non inverted setting for the inversion and add the KNC ONE V1.0 card.
Signed-off-by: Hartmut Birr <e9hack@googlemail.com>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/frontends/tda10021.c

@@ -53,9 +53,6 @@ struct tda10021_state {
 static int verbose;
 
 #define XIN 57840000UL
-#define DISABLE_INVERSION(reg0)		do { reg0 |= 0x20; } while (0)
-#define ENABLE_INVERSION(reg0)		do { reg0 &= ~0x20; } while (0)
-#define HAS_INVERSION(reg0)		(!(reg0 & 0x20))
 
 #define FIN (XIN >> 4)
 
@@ -97,7 +94,8 @@ static u8 tda10021_readreg (struct tda10021_state* state, u8 reg)
 	int ret;
 
 	ret = i2c_transfer (state->i2c, msg, 2);
-	if (ret != 2)
+	// Don't print an error message if the id is read.
+	if (ret != 2 && reg != 0x1a)
 		printk("DVB: TDA10021: %s: readreg error (ret == %i)\n",
 				__FUNCTION__, ret);
 	return b1[0];
@@ -136,10 +134,10 @@ static int tda10021_setup_reg0 (struct tda10021_state* state, u8 reg0,
 {
 	reg0 |= state->reg0 & 0x63;
 
-	if (INVERSION_ON == inversion)
-		ENABLE_INVERSION(reg0);
-	else if (INVERSION_OFF == inversion)
-		DISABLE_INVERSION(reg0);
+	if ((INVERSION_ON == inversion) ^ (state->config->invert == 0))
+		reg0 &= ~0x20;
+	else
+		reg0 |= 0x20;
 
 	_tda10021_writereg (state, 0x00, reg0 & 0xfe);
 	_tda10021_writereg (state, 0x00, reg0 | 0x01);
@@ -248,6 +246,9 @@ static int tda10021_set_parameters (struct dvb_frontend *fe,
 	if (qam < 0 || qam > 5)
 		return -EINVAL;
 
+	if (p->inversion != INVERSION_ON && p->inversion != INVERSION_OFF)
+		return -EINVAL;
+
 	//printk("tda10021: set frequency to %d qam=%d symrate=%d\n", p->frequency,qam,p->u.qam.symbol_rate);
 
 	if (fe->ops.tuner_ops.set_params) {
@@ -356,7 +357,7 @@ static int tda10021_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_pa
 		       -((s32)p->u.qam.symbol_rate * afc) >> 10);
 	}
 
-	p->inversion = HAS_INVERSION(state->reg0) ? INVERSION_ON : INVERSION_OFF;
+	p->inversion = ((state->reg0 & 0x20) == 0x20) ^ (state->config->invert != 0) ? INVERSION_ON : INVERSION_OFF;
 	p->u.qam.modulation = ((state->reg0 >> 2) & 7) + QAM_16;
 
 	p->u.qam.fec_inner = FEC_NONE;
@@ -403,6 +404,7 @@ struct dvb_frontend* tda10021_attach(const struct tda1002x_config* config,
 				     u8 pwm)
 {
 	struct tda10021_state* state = NULL;
+	u8 id;
 
 	/* allocate memory for the internal state */
 	state = kmalloc(sizeof(struct tda10021_state), GFP_KERNEL);
@@ -415,7 +417,11 @@ struct dvb_frontend* tda10021_attach(const struct tda1002x_config* config,
 	state->reg0 = tda10021_inittab[0];
 
 	/* check if the demod is there */
-	if ((tda10021_readreg(state, 0x1a) & 0xf0) != 0x70) goto error;
+	id = tda10021_readreg(state, 0x1a);
+	if ((id & 0xf0) != 0x70) goto error;
+
+	printk("TDA10021: i2c-addr = 0x%02x, id = 0x%02x\n",
+	       state->config->demod_address, id);
 
 	/* create dvb_frontend */
 	memcpy(&state->frontend.ops, &tda10021_ops, sizeof(struct dvb_frontend_ops));

drivers/media/dvb/frontends/tda1002x.h

@@ -30,6 +30,7 @@ struct tda1002x_config
 {
 	/* the demodulator's i2c address */
 	u8 demod_address;
+	u8 invert;
 };
 
 #if defined(CONFIG_DVB_TDA10021) || (defined(CONFIG_DVB_TDA10021_MODULE) && defined(MODULE))

drivers/media/dvb/ttpci/budget-av.c

@@ -659,10 +659,12 @@ static int philips_cu1216_tuner_set_params(struct dvb_frontend *fe, struct dvb_f
 
 static struct tda1002x_config philips_cu1216_config = {
 	.demod_address = 0x0c,
+	.invert = 1,
 };
 
 static struct tda1002x_config philips_cu1216_config_altaddress = {
 	.demod_address = 0x0d,
+	.invert = 0,
 };
 
 static int philips_tu1216_tuner_init(struct dvb_frontend *fe)