[PATCH] dvb: usb: add supprt for WideView WT-220U

Add support and rewrote some parts with the help of vendor information
(Thanks to Steve Chang from WideView, Inc.):

o added support for the WT-220U (Pensize DVB-T receiver)
o corrected byte order for unc,ber and the pid filter
o corrected number of pids that can be fetched at the same time.
o added some comments in Kconfig-file
o added USB IDs for the WT-220U

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 37 insertions, 35 deletions

diff --git a/drivers/media/dvb/dvb-usb/dtt200u-fe.c b/drivers/media/dvb/dvb-usb/dtt200u-fe.c
index 7807f33573b..b032523b07b 100644
--- a/drivers/media/dvb/dvb-usb/dtt200u-fe.c
+++ b/drivers/media/dvb/dvb-usb/dtt200u-fe.c
@@ -14,61 +14,58 @@
 struct dtt200u_fe_state {
 	struct dvb_usb_device *d;
 
+	fe_status_t stat;
+
 	struct dvb_frontend_parameters fep;
 	struct dvb_frontend frontend;
 };
 
-#define moan(which,what) info("unexpected value in '%s' for cmd '%02x' - please report to linux-dvb@linuxtv.org",which,what)
-
 static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat)
 {
 	struct dtt200u_fe_state *state = fe->demodulator_priv;
-	u8 bw = GET_TUNE_STAT;
-	u8 br[3] = { 0 };
-//	u8 bdeb[5] = { 0 };
+	u8 st = GET_TUNE_STATUS, b[3];
+
+	dvb_usb_generic_rw(state->d,&st,1,b,3,0);
 
-	dvb_usb_generic_rw(state->d,&bw,1,br,3,0);
-	switch (br[0]) {
+	switch (b[0]) {
 		case 0x01:
-			*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+			*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+				FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 			break;
-		case 0x00:
-			*stat = 0;
+		case 0x00: /* pending */
+			*stat = FE_TIMEDOUT; /* during set_frontend */
 			break;
 		default:
-			moan("br[0]",GET_TUNE_STAT);
+		case 0x02: /* failed */
+			*stat = 0;
 			break;
 	}
-
-//	bw[0] = 0x88;
-//	dvb_usb_generic_rw(state->d,bw,1,bdeb,5,0);
-
-//	deb_info("%02x: %02x %02x %02x %02x %02x\n",bw[0],bdeb[0],bdeb[1],bdeb[2],bdeb[3],bdeb[4]);
-
 	return 0;
 }
+
 static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
 {
 	struct dtt200u_fe_state *state = fe->demodulator_priv;
-	u8 bw = GET_BER;
-	*ber = 0;
-	dvb_usb_generic_rw(state->d,&bw,1,(u8*) ber,3,0);
+	u8 bw = GET_VIT_ERR_CNT,b[3];
+	dvb_usb_generic_rw(state->d,&bw,1,b,3,0);
+	*ber = (b[0] << 16) | (b[1] << 8) | b[2];
 	return 0;
 }
 
 static int dtt200u_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 {
 	struct dtt200u_fe_state *state = fe->demodulator_priv;
-	u8 bw = GET_UNK;
-	*unc = 0;
-	dvb_usb_generic_rw(state->d,&bw,1,(u8*) unc,3,0);
+	u8 bw = GET_RS_UNCOR_BLK_CNT,b[2];
+
+	dvb_usb_generic_rw(state->d,&bw,1,b,2,0);
+	*unc = (b[0] << 8) | b[1];
 	return 0;
 }
 
 static int dtt200u_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 {
 	struct dtt200u_fe_state *state = fe->demodulator_priv;
-	u8 bw = GET_SIG_STRENGTH, b;
+	u8 bw = GET_AGC, b;
 	dvb_usb_generic_rw(state->d,&bw,1,&b,1,0);
 	*strength = (b << 8) | b;
 	return 0;
@@ -86,7 +83,7 @@ static int dtt200u_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
 static int dtt200u_fe_init(struct dvb_frontend* fe)
 {
 	struct dtt200u_fe_state *state = fe->demodulator_priv;
-	u8 b = RESET_DEMOD;
+	u8 b = SET_INIT;
 	return dvb_usb_generic_write(state->d,&b,1);
 }
 
@@ -98,8 +95,8 @@ static int dtt200u_fe_sleep(struct dvb_frontend* fe)
 static int dtt200u_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 {
 	tune->min_delay_ms = 1500;
-	tune->step_size = 166667;
-	tune->max_drift = 166667 * 2;
+	tune->step_size = 0;
+	tune->max_drift = 0;
 	return 0;
 }
 
@@ -107,27 +104,32 @@ static int dtt200u_fe_set_frontend(struct dvb_frontend* fe,
 				  struct dvb_frontend_parameters *fep)
 {
 	struct dtt200u_fe_state *state = fe->demodulator_priv;
+	int i;
+	fe_status_t st;
 	u16 freq = fep->frequency / 250000;
-	u8 bw,bwbuf[2] = { SET_BANDWIDTH, 0 }, freqbuf[3] = { SET_FREQUENCY, 0, 0 };
+	u8 bwbuf[2] = { SET_BANDWIDTH, 0 },freqbuf[3] = { SET_RF_FREQ, 0, 0 };
 
 	switch (fep->u.ofdm.bandwidth) {
-		case BANDWIDTH_8_MHZ: bw = 8; break;
-		case BANDWIDTH_7_MHZ: bw = 7; break;
-		case BANDWIDTH_6_MHZ: bw = 6; break;
+		case BANDWIDTH_8_MHZ: bwbuf[1] = 8; break;
+		case BANDWIDTH_7_MHZ: bwbuf[1] = 7; break;
+		case BANDWIDTH_6_MHZ: bwbuf[1] = 6; break;
 		case BANDWIDTH_AUTO: return -EOPNOTSUPP;
 		default:
 			return -EINVAL;
 	}
-	deb_info("set_frontend\n");
 
-	bwbuf[1] = bw;
 	dvb_usb_generic_write(state->d,bwbuf,2);
 
 	freqbuf[1] = freq & 0xff;
 	freqbuf[2] = (freq >> 8) & 0xff;
 	dvb_usb_generic_write(state->d,freqbuf,3);
 
-	memcpy(&state->fep,fep,sizeof(struct dvb_frontend_parameters));
+	for (i = 0; i < 30; i++) {
+		msleep(20);
+		dtt200u_fe_read_status(fe, &st);
+		if (st & FE_TIMEDOUT)
+			continue;
+	}
 
 	return 0;
 }
@@ -174,7 +176,7 @@ success:
 
 static struct dvb_frontend_ops dtt200u_fe_ops = {
 	.info = {
-		.name			= "DTT200U (Yakumo/Typhoon/Hama) DVB-T",
+		.name			= "WideView USB DVB-T",
 		.type			= FE_OFDM,
 		.frequency_min		= 44250000,
 		.frequency_max		= 867250000,