[alsa-devel] [PATCH 4/4] ASoC: Blackfin: update SPORT0 port selector of i2s driver

[Bryan Wu]

From: Cliff Cai <cliff.cai at analog.com>

 - Setting the TFS pin selector for SPORT 0 based on whether the selected
   port id F or G. If the port is F then no conflict should exist for the
   TFS. When Port G is selected and EMAC then there is a conflict between
   the PHY interrupt line and TFS.  Current settings prevent the conflict
   by ignoring the TFS pin when Port G is selected. This allows both
   ssm2602 using Port G and EMAC concurrently.

 - some code cleanup

Signed-off-by: Cliff Cai <cliff.cai at analog.com>
Signed-off-by: Bryan Wu <cooloney at kernel.org>
---
 sound/soc/blackfin/bf5xx-i2s.c |   36 ++++++++++++++++++++++++------------
 1 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/sound/soc/blackfin/bf5xx-i2s.c b/sound/soc/blackfin/bf5xx-i2s.c
index 827587f..390b299 100644
--- a/sound/soc/blackfin/bf5xx-i2s.c
+++ b/sound/soc/blackfin/bf5xx-i2s.c
@@ -70,12 +70,26 @@ static struct sport_param sport_params[2] = {
 	}
 };
 
-static u16 sport_req[][7] = {
-		{ P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
-		  P_SPORT0_DRPRI, P_SPORT0_RSCLK, 0},
-		{ P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS,
-		  P_SPORT1_DRPRI, P_SPORT1_RSCLK, 0},
-};
+/*
+ * Setting the TFS pin selector for SPORT 0 based on whether the selected
+ * port id F or G. If the port is F then no conflict should exist for the
+ * TFS. When Port G is selected and EMAC then there is a conflict between
+ * the PHY interrupt line and TFS.  Current settings prevent the conflict
+ * by ignoring the TFS pin when Port G is selected. This allows both
+ * ssm2602 using Port G and EMAC concurrently.
+ */
+#ifdef CONFIG_BF527_SPORT0_PORTF
+#define LOCAL_SPORT0_TFS (P_SPORT0_TFS)
+#endif
+
+#ifndef CONFIG_BF527_SPORT0_PORTF
+#define LOCAL_SPORT0_TFS (0)
+#endif
+
+static u16 sport_req[][7] = { {P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
+		P_SPORT0_DRPRI, P_SPORT0_RSCLK, LOCAL_SPORT0_TFS, 0},
+		{P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS, P_SPORT1_DRPRI,
+		P_SPORT1_RSCLK, P_SPORT1_TFS, 0} };
 
 static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
 		unsigned int fmt)
@@ -98,23 +112,21 @@ static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
 		ret = -EINVAL;
 		break;
 	default:
+		printk(KERN_ERR "%s: Unknown DAI format type\n", __func__);
 		ret = -EINVAL;
 		break;
 	}
 
 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
-	case SND_SOC_DAIFMT_CBS_CFS:
-		ret = -EINVAL;
-		break;
-	case SND_SOC_DAIFMT_CBM_CFS:
-		ret = -EINVAL;
-		break;
 	case SND_SOC_DAIFMT_CBM_CFM:
 		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+	case SND_SOC_DAIFMT_CBM_CFS:
 	case SND_SOC_DAIFMT_CBS_CFM:
 		ret = -EINVAL;
 		break;
 	default:
+		printk(KERN_ERR "%s: Unknown DAI master type\n", __func__);
 		ret = -EINVAL;
 		break;
 	}
-- 
1.5.6