[linux-dvb] [PATCH] Convert GP8PSK module to use S2API

[Alan Nisota <alannisota@gmail.com>]

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This patch converts the gp8psk module to use the S2API.
It pretends to be  DVB-S2 capable in order to allow the various 
supported modulations (8PSK, QPSK-Turbo, etc), and keep software 
compatibility with the S2API patches for Mythtv and VDR.

Signed-off by: Alan Nisota <alannisota@gmail.com>


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diff -r 7100e78482d7 linux/drivers/media/dvb/dvb-usb/gp8psk-fe.c
--- a/linux/drivers/media/dvb/dvb-usb/gp8psk-fe.c	Sat Nov 29 00:46:43 2008 -0200
+++ b/linux/drivers/media/dvb/dvb-usb/gp8psk-fe.c	Sat Nov 29 08:46:45 2008 -0800
@@ -24,6 +24,20 @@ struct gp8psk_fe_state {
 	unsigned long next_status_check;
 	unsigned long status_check_interval;
 };
+
+static int gp8psk_tuned_to_DCII(struct dvb_frontend* fe)
+{
+	struct gp8psk_fe_state *st = fe->demodulator_priv;
+	u8 status;
+	gp8psk_usb_in_op(st->d, GET_8PSK_CONFIG, 0,0,&status,1);
+	return (status & bmDCtuned);
+}
+
+static int gp8psk_set_tuner_mode(struct dvb_frontend* fe, int mode)
+{
+	struct gp8psk_fe_state *state = fe->demodulator_priv;
+	return gp8psk_usb_out_op(state->d, SET_8PSK_CONFIG, mode,0,NULL,0);
+}
 
 static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
 {
@@ -99,38 +113,149 @@ static int gp8psk_fe_get_tune_settings(s
 	return 0;
 }
 
+static int gp8psk_fe_set_property(struct dvb_frontend *fe,
+	struct dtv_property *tvp)
+{
+	deb_fe("%s(..)\n", __func__);
+	return 0;
+}
+
+static int gp8psk_fe_get_property(struct dvb_frontend *fe,
+	struct dtv_property *tvp)
+{
+	deb_fe("%s(..)\n", __func__);
+	return 0;
+}
+
+
 static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,
 				  struct dvb_frontend_parameters *fep)
 {
 	struct gp8psk_fe_state *state = fe->demodulator_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	u8 cmd[10];
 	u32 freq = fep->frequency * 1000;
+	int gp_product_id = le16_to_cpu(state->d->udev->descriptor.idProduct);
+
+	deb_fe("%s()\n", __func__);
 
 	cmd[4] = freq         & 0xff;
 	cmd[5] = (freq >> 8)  & 0xff;
 	cmd[6] = (freq >> 16) & 0xff;
 	cmd[7] = (freq >> 24) & 0xff;
 
-	switch(fe->ops.info.type) {
-	case FE_QPSK:
-		cmd[0] =  fep->u.qpsk.symbol_rate        & 0xff;
-		cmd[1] = (fep->u.qpsk.symbol_rate >>  8) & 0xff;
-		cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff;
-		cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff;
+	switch (c->delivery_system) {
+	case SYS_DVBS:
+		/* Only QPSK is supported for DVB-S */
+		if (c->modulation != QPSK) {
+			deb_fe("%s: unsupported modulation selected (%d)\n",
+				__func__, c->modulation);
+			return -EOPNOTSUPP;
+		}
+		c->fec_inner = FEC_AUTO;
+		break;
+	case SYS_DVBS2:
+		deb_fe("%s: DVB-S2 delivery system selected\n", __func__);
+
+		/*
+		 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
+		 * but not hardware auto detection
+		 */
+		if (c->modulation != PSK_8 && c->modulation != QPSK) {
+			deb_fe("%s: unsupported modulation selected (%d)\n",
+				__func__, c->modulation);
+			return -EOPNOTSUPP;
+		}
+		break;
+
+	default:
+		deb_fe("%s: unsupported delivery system selected (%d)\n",
+			__func__, c->delivery_system);
+		return -EOPNOTSUPP;
+	}
+
+	cmd[0] =  c->symbol_rate        & 0xff;
+	cmd[1] = (c->symbol_rate >>  8) & 0xff;
+	cmd[2] = (c->symbol_rate >> 16) & 0xff;
+	cmd[3] = (c->symbol_rate >> 24) & 0xff;
+	switch (c->modulation) {
+	case QPSK:
+		if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
+			if (gp8psk_tuned_to_DCII(fe))
+				gp8psk_bcm4500_reload(state->d);
+		switch (c->fec_inner) {
+		case FEC_1_2:  cmd[9] = 0; break;
+		case FEC_2_3:  cmd[9] = 1; break;
+		case FEC_3_4:  cmd[9] = 2; break;
+		case FEC_5_6:  cmd[9] = 3; break;
+		case FEC_7_8:  cmd[9] = 4; break;
+		case FEC_AUTO: cmd[9] = 5; break;
+		default:       cmd[9] = 5; break;
+		}
 		cmd[8] = ADV_MOD_DVB_QPSK;
-		cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/
+		cmd[9] = 5;
 		break;
-	default:
-		// other modes are unsuported right now
-		cmd[0] = 0;
-		cmd[1] = 0;
-		cmd[2] = 0;
-		cmd[3] = 0;
-		cmd[8] = 0;
+	case QPSK_TURBO:
+		cmd[8] = ADV_MOD_TURBO_QPSK;
+		switch (c->fec_inner) {
+		case FEC_1_4:  cmd[9] = 0; break;
+		case FEC_1_2:  cmd[9] = 1; break;
+		case FEC_2_3:  cmd[9] = 0; cmd[8] = ADV_MOD_TURBO_16QAM; break;
+		case FEC_3_4:  cmd[9] = 2; break;
+		default:       cmd[9] = 0; break;
+		}
+		break; 
+	case PSK_8: /* PSK_8 is for compatibility with DN */
+	case PSK_8_TURBO:
+		cmd[8] = ADV_MOD_TURBO_8PSK;
+		switch (c->fec_inner) {
+		case FEC_2_3:  cmd[9] = 0; break;
+		case FEC_3_4:  cmd[9] = 1; break;
+		case FEC_3_5:  cmd[9] = 2; break;
+		case FEC_5_6:  cmd[9] = 3; break;
+		case FEC_8_9:  cmd[9] = 4; break;
+		default:       cmd[9] = 0; break;
+		}
+		break;
+	case QAM_16: /* QAM_16 is for compatibility with DN */
+	case QAM_16_TURBO:
+		cmd[8] = ADV_MOD_TURBO_16QAM;
 		cmd[9] = 0;
+		break;
+	case QPSK_DCII_C:
+		cmd[8] = ADV_MOD_DCII_C_QPSK;
+		goto fill_fec;
+	case QPSK_DCII_I:
+		cmd[8] = ADV_MOD_DCII_I_QPSK;
+		goto fill_fec;
+	case QPSK_DCII_Q:
+		cmd[8] = ADV_MOD_DCII_Q_QPSK;
+		goto fill_fec;
+	case OQPSK_DCII_C:
+		cmd[8] = ADV_MOD_DCII_C_OQPSK;
+fill_fec:
+		switch (c->fec_inner) {
+		case FEC_5_11: cmd[9] = 0; break;
+		case FEC_1_2:  cmd[9] = 1; break;
+		case FEC_3_5:  cmd[9] = 2; break;
+		case FEC_2_3:  cmd[9] = 3; break;
+		case FEC_3_4:  cmd[9] = 4; break;
+		case FEC_4_5:  cmd[9] = 5; break;
+		case FEC_5_6:  cmd[9] = 6; break;
+		case FEC_7_8:  cmd[9] = 7; break;
+		case FEC_AUTO: cmd[9] = 8; break;
+		default:       cmd[9] = 8; break;
+		}
+		break;
+	default: /* DSS QPSK is not supported right now */
+		info("WRONG modulation selected");
+		cmd[8] = ADV_MOD_DVB_QPSK;
+		cmd[9] = 5;  /* FEC_AUTO */ 
 		break;
 	}
 
+	if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
+		gp8psk_set_tuner_mode(fe,0);
 	gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10);
 
 	state->lock = 0;
@@ -139,13 +264,6 @@ static int gp8psk_fe_set_frontend(struct
 
 	return 0;
 }
-
-static int gp8psk_fe_get_frontend(struct dvb_frontend* fe,
-				  struct dvb_frontend_parameters *fep)
-{
-	return 0;
-}
-
 
 static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
 				    struct dvb_diseqc_master_cmd *m)
@@ -261,9 +379,11 @@ static struct dvb_frontend_ops gp8psk_fe
 		.symbol_rate_max        = 45000000,
 		.symbol_rate_tolerance  = 500,  /* ppm */
 		.caps = FE_CAN_INVERSION_AUTO |
-				FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
-				FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
-				FE_CAN_QPSK
+			FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+			FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+			// FE_CAN_QAM_16 is for compatibility 
+			// (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
+			FE_CAN_QPSK | FE_CAN_QAM_16
 	},
 
 	.release = gp8psk_fe_release,
@@ -271,8 +391,10 @@ static struct dvb_frontend_ops gp8psk_fe
 	.init = NULL,
 	.sleep = NULL,
 
+	.set_property = gp8psk_fe_set_property,
+	.get_property = gp8psk_fe_get_property,
 	.set_frontend = gp8psk_fe_set_frontend,
-	.get_frontend = gp8psk_fe_get_frontend,
+
 	.get_tune_settings = gp8psk_fe_get_tune_settings,
 
 	.read_status = gp8psk_fe_read_status,
diff -r 7100e78482d7 linux/drivers/media/dvb/dvb-usb/gp8psk.c
--- a/linux/drivers/media/dvb/dvb-usb/gp8psk.c	Sat Nov 29 00:46:43 2008 -0200
+++ b/linux/drivers/media/dvb/dvb-usb/gp8psk.c	Sat Nov 29 08:46:45 2008 -0800
@@ -174,7 +174,6 @@ static int gp8psk_power_ctrl(struct dvb_
 	return 0;
 }
 
-#if 0
 int gp8psk_bcm4500_reload(struct dvb_usb_device *d)
 {
 	u8 buf;
@@ -191,7 +190,6 @@ int gp8psk_bcm4500_reload(struct dvb_usb
 			return EINVAL;
 	return 0;
 }
-#endif  /*  0  */
 
 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
diff -r 7100e78482d7 linux/drivers/media/dvb/dvb-usb/gp8psk.h
--- a/linux/drivers/media/dvb/dvb-usb/gp8psk.h	Sat Nov 29 00:46:43 2008 -0200
+++ b/linux/drivers/media/dvb/dvb-usb/gp8psk.h	Sat Nov 29 08:46:45 2008 -0800
@@ -92,5 +92,6 @@ extern int gp8psk_usb_in_op(struct dvb_u
 extern int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value, u16 index, u8 *b, int blen);
 extern int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
 			     u16 index, u8 *b, int blen);
+extern int gp8psk_bcm4500_reload(struct dvb_usb_device *d);
 
 #endif
diff -r 7100e78482d7 linux/include/linux/dvb/frontend.h
--- a/linux/include/linux/dvb/frontend.h	Sat Nov 29 00:46:43 2008 -0200
+++ b/linux/include/linux/dvb/frontend.h	Sat Nov 29 08:46:45 2008 -0800
@@ -151,6 +151,8 @@ typedef enum fe_code_rate {
 	FEC_AUTO,
 	FEC_3_5,
 	FEC_9_10,
+	FEC_1_4,
+	FEC_5_11,
 } fe_code_rate_t;
 
 
@@ -168,6 +170,13 @@ typedef enum fe_modulation {
 	APSK_16,
 	APSK_32,
 	DQPSK,
+	QPSK_TURBO,
+	PSK_8_TURBO,
+	QAM_16_TURBO,
+	QPSK_DCII_C,
+	QPSK_DCII_I,
+	QPSK_DCII_Q,
+	OQPSK_DCII_C,
 } fe_modulation_t;
 
 typedef enum fe_transmit_mode {

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