[media] siano: add support for LNA on ISDB-T (0c189fa6) · Commits · 戴 / test

drivers/media/common/siano/smsdvb.c

+18 −1

Original line number	Diff line number	Diff line
		@@ -655,7 +655,7 @@ static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
		int board_id = smscore_get_board_id(client->coredev);
		struct sms_board *board = sms_get_board(board_id);
		enum sms_device_type_st type = board->type;

		int ret;
		struct {
		struct SmsMsgHdr_ST Msg;
		u32 Data[4];
		@@ -695,6 +695,23 @@ static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
		c->frequency, c->isdbt_sb_segment_count,
		c->isdbt_sb_segment_idx);

		/* 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 didn't 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);
		}