V4L/DVB (10746): sms1xxx: enable rf switch on Hauppauge Tiger devices

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/siano/sms-cards.c

@@ -117,6 +117,7 @@ static struct sms_board sms_boards[] = {
 		.type	= SMS_NOVA_B0,
 		.fw[DEVICE_MODE_DVBT_BDA] = "sms1xxx-hcw-55xxx-dvbt-02.fw",
 		.lna_ctrl  = 29,
+		.rf_switch = 17,
 	},
 	[SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD_R2] = {
 		.name	= "Hauppauge WinTV MiniCard",
@@ -199,8 +200,8 @@ int sms_board_power(struct smscore_device_t *coredev, int onoff)
 	case SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD_R2:
 	case SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD:
 		/* LNA */
-		sms_set_gpio(coredev,
-			     board->lna_ctrl, onoff ? 1 : 0);
+		if (!onoff)
+			sms_set_gpio(coredev, board->lna_ctrl, 0);
 		break;
 	}
 	return 0;
@@ -227,3 +228,21 @@ int sms_board_led_feedback(struct smscore_device_t *coredev, int led)
 	}
 	return 0;
 }
+
+int sms_board_lna_control(struct smscore_device_t *coredev, int onoff)
+{
+	int board_id = smscore_get_board_id(coredev);
+	struct sms_board *board = sms_get_board(board_id);
+
+	sms_debug("%s: LNA %s", __func__, onoff ? "enabled" : "disabled");
+
+	switch (board_id) {
+	case SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD_R2:
+	case SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD:
+		sms_set_gpio(coredev,
+			     board->rf_switch, onoff ? 1 : 0);
+		return sms_set_gpio(coredev,
+				    board->lna_ctrl, onoff ? 1 : 0);
+	}
+	return -EINVAL;
+}

drivers/media/dvb/siano/sms-cards.h

@@ -40,7 +40,7 @@ struct sms_board {
 	char *name, *fw[DEVICE_MODE_MAX];
 
 	/* gpios */
-	int led_power, led_hi, led_lo, lna_ctrl;
+	int led_power, led_hi, led_lo, lna_ctrl, rf_switch;
 };
 
 struct sms_board *sms_get_board(int id);
@@ -52,6 +52,7 @@ int sms_board_setup(struct smscore_device_t *coredev);
 #define SMS_LED_HI  2
 int sms_board_led_feedback(struct smscore_device_t *coredev, int led);
 int sms_board_power(struct smscore_device_t *coredev, int onoff);
+int sms_board_lna_control(struct smscore_device_t *coredev, int onoff);
 
 extern struct usb_device_id smsusb_id_table[];
 

drivers/media/dvb/siano/smsdvb.c

@@ -262,6 +262,7 @@ static int smsdvb_set_frontend(struct dvb_frontend *fe,
 		struct SmsMsgHdr_ST	Msg;
 		u32		Data[3];
 	} Msg;
+	int ret;
 
 	Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 	Msg.Msg.msgDstId  = HIF_TASK;
@@ -282,6 +283,24 @@ static int smsdvb_set_frontend(struct dvb_frontend *fe,
 	default: return -EINVAL;
 	}
 
+	/* Disable LNA, if any. An error is returned if no LNA is present */
+	ret = sms_board_lna_control(client->coredev, 0);
+	if (ret == 0) {
+		fe_status_t status;
+
+		/* tune with LNA off at first */
+		ret = smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
+						  &client->tune_done);
+
+		smsdvb_read_status(fe, &status);
+
+		if (status & FE_HAS_LOCK)
+			return ret;
+
+		/* previous tune didnt lock - enable LNA and tune again */
+		sms_board_lna_control(client->coredev, 1);
+	}
+
 	return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
 					   &client->tune_done);
 }