[ALSA] oxygen: make PCM limits configurable

Add a callback to the model structure to allow modification of the
hardware PCM limits.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/oxygen/oxygen.c

@@ -163,6 +163,18 @@ static void generic_cleanup(struct oxygen *chip)
 {
 }
 
+static void generic_pcm_hardware_filter(unsigned int channel,
+					struct snd_pcm_hardware *hardware)
+{
+	if (channel == PCM_A) {
+		hardware->rates = SNDRV_PCM_RATE_44100 |
+				  SNDRV_PCM_RATE_48000 |
+				  SNDRV_PCM_RATE_96000 |
+				  SNDRV_PCM_RATE_192000;
+		hardware->rate_min = 44100;
+	}
+}
+
 static void set_ak4396_params(struct oxygen *chip,
 			      struct snd_pcm_hw_params *params)
 {
@@ -262,6 +274,7 @@ static const struct oxygen_model model_generic = {
 	.init = generic_init,
 	.control_filter = ak4396_control_filter,
 	.cleanup = generic_cleanup,
+	.pcm_hardware_filter = generic_pcm_hardware_filter,
 	.set_dac_params = set_ak4396_params,
 	.set_adc_params = set_wm8785_params,
 	.update_dac_volume = update_ak4396_volume,

sound/pci/oxygen/oxygen.h

@@ -34,6 +34,7 @@ enum {
 struct pci_dev;
 struct snd_card;
 struct snd_pcm_substream;
+struct snd_pcm_hardware;
 struct snd_pcm_hw_params;
 struct snd_kcontrol_new;
 struct snd_rawmidi;
@@ -75,6 +76,8 @@ struct oxygen_model {
 	int (*control_filter)(struct snd_kcontrol_new *template);
 	int (*mixer_init)(struct oxygen *chip);
 	void (*cleanup)(struct oxygen *chip);
+	void (*pcm_hardware_filter)(unsigned int channel,
+				    struct snd_pcm_hardware *hardware);
 	void (*set_dac_params)(struct oxygen *chip,
 			       struct snd_pcm_hw_params *params);
 	void (*set_adc_params)(struct oxygen *chip,

sound/pci/oxygen/oxygen_pcm.c

@@ -33,11 +33,15 @@ static struct snd_pcm_hardware oxygen_hardware[PCM_COUNT] = {
 			SNDRV_PCM_INFO_SYNC_START,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE |
 			   SNDRV_PCM_FMTBIT_S32_LE,
-		.rates = SNDRV_PCM_RATE_44100 |
+		.rates = SNDRV_PCM_RATE_32000 |
+			 SNDRV_PCM_RATE_44100 |
 			 SNDRV_PCM_RATE_48000 |
+			 SNDRV_PCM_RATE_64000 |
+			 SNDRV_PCM_RATE_88200 |
 			 SNDRV_PCM_RATE_96000 |
+			 SNDRV_PCM_RATE_176400 |
 			 SNDRV_PCM_RATE_192000,
-		.rate_min = 44100,
+		.rate_min = 32000,
 		.rate_max = 192000,
 		.channels_min = 2,
 		.channels_max = 2,
@@ -182,6 +186,8 @@ static int oxygen_open(struct snd_pcm_substream *substream,
 
 	runtime->private_data = (void *)(uintptr_t)channel;
 	runtime->hw = oxygen_hardware[channel];
+	if (chip->model->pcm_hardware_filter)
+		chip->model->pcm_hardware_filter(channel, &runtime->hw);
 	err = snd_pcm_hw_constraint_step(runtime, 0,
 					 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 	if (err < 0)