ALSA: ctxfi - Fix supported PCM formats

The device seems supporting only U8, S16, S24_3LE, S32.  Other linear
formats result in bad outputs.

Also, added the support for 32bit float format, which wasn't listed
in the original code.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ctxfi/ctatc.c

@@ -170,16 +170,15 @@ static unsigned int convert_format(snd_pcm_format_t snd_format)
 {
 	switch (snd_format) {
 	case SNDRV_PCM_FORMAT_U8:
-	case SNDRV_PCM_FORMAT_S8:
 		return SRC_SF_U8;
 	case SNDRV_PCM_FORMAT_S16_LE:
-	case SNDRV_PCM_FORMAT_U16_LE:
 		return SRC_SF_S16;
 	case SNDRV_PCM_FORMAT_S24_3LE:
 		return SRC_SF_S24;
-	case SNDRV_PCM_FORMAT_S24_LE:
 	case SNDRV_PCM_FORMAT_S32_LE:
 		return SRC_SF_S32;
+	case SNDRV_PCM_FORMAT_FLOAT_LE:
+		return SRC_SF_F32;
 	default:
 		printk(KERN_ERR "ctxfi: not recognized snd format is %d \n",
 			snd_format);

sound/pci/ctxfi/ctpcm.c

@@ -26,12 +26,10 @@ static struct snd_pcm_hardware ct_pcm_playback_hw = {
 				   SNDRV_PCM_INFO_MMAP_VALID |
 				   SNDRV_PCM_INFO_PAUSE),
 	.formats		= (SNDRV_PCM_FMTBIT_U8 |
-				   SNDRV_PCM_FMTBIT_S8 |
 				   SNDRV_PCM_FMTBIT_S16_LE |
-				   SNDRV_PCM_FMTBIT_U16_LE |
 				   SNDRV_PCM_FMTBIT_S24_3LE |
-				   SNDRV_PCM_FMTBIT_S24_LE |
-				   SNDRV_PCM_FMTBIT_S32_LE),
+				   SNDRV_PCM_FMTBIT_S32_LE |
+				   SNDRV_PCM_FMTBIT_FLOAT_LE),
 	.rates			= (SNDRV_PCM_RATE_CONTINUOUS |
 				   SNDRV_PCM_RATE_8000_192000),
 	.rate_min		= 8000,
@@ -52,8 +50,7 @@ static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
 				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
 				   SNDRV_PCM_INFO_MMAP_VALID |
 				   SNDRV_PCM_INFO_PAUSE),
-	.formats		= (SNDRV_PCM_FMTBIT_S16_LE |
-				   SNDRV_PCM_FMTBIT_U16_LE),
+	.formats		= SNDRV_PCM_FMTBIT_S16_LE,
 	.rates			= (SNDRV_PCM_RATE_48000 |
 				   SNDRV_PCM_RATE_44100 |
 				   SNDRV_PCM_RATE_32000),
@@ -77,12 +74,10 @@ static struct snd_pcm_hardware ct_pcm_capture_hw = {
 				   SNDRV_PCM_INFO_PAUSE |
 				   SNDRV_PCM_INFO_MMAP_VALID),
 	.formats		= (SNDRV_PCM_FMTBIT_U8 |
-				   SNDRV_PCM_FMTBIT_S8 |
 				   SNDRV_PCM_FMTBIT_S16_LE |
-				   SNDRV_PCM_FMTBIT_U16_LE |
 				   SNDRV_PCM_FMTBIT_S24_3LE |
-				   SNDRV_PCM_FMTBIT_S24_LE |
-				   SNDRV_PCM_FMTBIT_S32_LE),
+				   SNDRV_PCM_FMTBIT_S32_LE |
+				   SNDRV_PCM_FMTBIT_FLOAT_LE),
 	.rates			= (SNDRV_PCM_RATE_CONTINUOUS |
 				   SNDRV_PCM_RATE_8000_96000),
 	.rate_min		= 8000,