[ALSA] oxygen: allow more sample rates with WM8785

Allow to record with 32 kHz, 64 kHz, 88.2 kHz and 176.4 kHz with cards
that have a WM8785 ADC.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/oxygen/oxygen.c

@@ -232,18 +232,6 @@ 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)
 {
@@ -300,12 +288,12 @@ static void set_wm8785_params(struct oxygen *chip,
 	wm8785_write(chip, WM8785_R7, 0);
 
 	value = WM8785_MCR_SLAVE | WM8785_FORMAT_LJUST;
-	if (params_rate(params) == 96000)
+	if (params_rate(params) <= 48000)
+		value |= WM8785_OSR_SINGLE;
+	else if (params_rate(params) <= 96000)
 		value |= WM8785_OSR_DOUBLE;
-	else if (params_rate(params) == 192000)
-		value |= WM8785_OSR_QUAD;
 	else
-		value |= WM8785_OSR_SINGLE;
+		value |= WM8785_OSR_QUAD;
 	wm8785_write(chip, WM8785_R0, value);
 
 	if (snd_pcm_format_width(params_format(params)) <= 16)
@@ -349,7 +337,6 @@ 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,