--- zzzz-none-000/linux-3.10.107/sound/pci/oxygen/oxygen_pcm.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/pci/oxygen/oxygen_pcm.c	2021-02-04 17:41:59.000000000 +0000
@@ -29,6 +29,9 @@
 /* the multichannel DMA channel has a 24-bit counter */
 #define BUFFER_BYTES_MAX_MULTICH	((1 << 24) * 4)
 
+#define FIFO_BYTES			256
+#define FIFO_BYTES_MULTICH		1024
+
 #define PERIOD_BYTES_MIN		64
 
 #define DEFAULT_BUFFER_BYTES		(BUFFER_BYTES_MAX / 2)
@@ -60,6 +63,7 @@
 	.period_bytes_max = BUFFER_BYTES_MAX,
 	.periods_min = 1,
 	.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
+	.fifo_size = FIFO_BYTES,
 };
 static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
 	.info = SNDRV_PCM_INFO_MMAP |
@@ -87,6 +91,7 @@
 	.period_bytes_max = BUFFER_BYTES_MAX_MULTICH,
 	.periods_min = 1,
 	.periods_max = BUFFER_BYTES_MAX_MULTICH / PERIOD_BYTES_MIN,
+	.fifo_size = FIFO_BYTES_MULTICH,
 };
 static const struct snd_pcm_hardware oxygen_ac97_hardware = {
 	.info = SNDRV_PCM_INFO_MMAP |
@@ -106,6 +111,7 @@
 	.period_bytes_max = BUFFER_BYTES_MAX,
 	.periods_min = 1,
 	.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
+	.fifo_size = FIFO_BYTES,
 };
 
 static const struct snd_pcm_hardware *const oxygen_hardware[PCM_COUNT] = {
@@ -138,9 +144,15 @@
 		runtime->hw = *oxygen_hardware[channel];
 	switch (channel) {
 	case PCM_C:
-		runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
-				       SNDRV_PCM_RATE_64000);
-		runtime->hw.rate_min = 44100;
+		if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) {
+			runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
+					       SNDRV_PCM_RATE_64000);
+			runtime->hw.rate_min = 44100;
+		}
+		/* fall through */
+	case PCM_A:
+	case PCM_B:
+		runtime->hw.fifo_size = 0;
 		break;
 	case PCM_MULTICH:
 		runtime->hw.channels_max = chip->model.dac_channels_pcm;
@@ -420,17 +432,36 @@
 				  struct snd_pcm_hw_params *hw_params)
 {
 	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	bool is_spdif;
 	int err;
 
 	err = oxygen_hw_params(substream, hw_params);
 	if (err < 0)
 		return err;
 
+	is_spdif = chip->model.device_config & CAPTURE_1_FROM_SPDIF;
+
 	spin_lock_irq(&chip->reg_lock);
 	oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
 			     oxygen_format(hw_params) << OXYGEN_REC_FORMAT_C_SHIFT,
 			     OXYGEN_REC_FORMAT_C_MASK);
+	if (!is_spdif)
+		oxygen_write16_masked(chip, OXYGEN_I2S_C_FORMAT,
+				      oxygen_rate(hw_params) |
+				      chip->model.adc_i2s_format |
+				      get_mclk(chip, PCM_B, hw_params) |
+				      oxygen_i2s_bits(hw_params),
+				      OXYGEN_I2S_RATE_MASK |
+				      OXYGEN_I2S_FORMAT_MASK |
+				      OXYGEN_I2S_MCLK_MASK |
+				      OXYGEN_I2S_BITS_MASK);
 	spin_unlock_irq(&chip->reg_lock);
+
+	if (!is_spdif) {
+		mutex_lock(&chip->mutex);
+		chip->model.set_adc_params(chip, hw_params);
+		mutex_unlock(&chip->mutex);
+	}
 	return 0;
 }
 
@@ -666,11 +697,6 @@
 	.pointer   = oxygen_pointer,
 };
 
-static void oxygen_pcm_free(struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 int oxygen_pcm_init(struct oxygen *chip)
 {
 	struct snd_pcm *pcm;
@@ -695,7 +721,6 @@
 			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 					&oxygen_rec_b_ops);
 		pcm->private_data = chip;
-		pcm->private_free = oxygen_pcm_free;
 		strcpy(pcm->name, "Multichannel");
 		if (outs)
 			snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
@@ -724,7 +749,6 @@
 			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 					&oxygen_rec_c_ops);
 		pcm->private_data = chip;
-		pcm->private_free = oxygen_pcm_free;
 		strcpy(pcm->name, "Digital");
 		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 						      snd_dma_pci_data(chip->pci),
@@ -755,11 +779,28 @@
 			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 					&oxygen_rec_b_ops);
 		pcm->private_data = chip;
-		pcm->private_free = oxygen_pcm_free;
 		strcpy(pcm->name, outs ? "Front Panel" : "Analog 2");
 		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 						      snd_dma_pci_data(chip->pci),
 						      DEFAULT_BUFFER_BYTES,
+						      BUFFER_BYTES_MAX);
+	}
+
+	ins = !!(chip->model.device_config & CAPTURE_3_FROM_I2S_3);
+	if (ins) {
+		err = snd_pcm_new(chip->card, "Analog3", 3, 0, ins, &pcm);
+		if (err < 0)
+			return err;
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+				&oxygen_rec_c_ops);
+		oxygen_write8_masked(chip, OXYGEN_REC_ROUTING,
+				     OXYGEN_REC_C_ROUTE_I2S_ADC_3,
+				     OXYGEN_REC_C_ROUTE_MASK);
+		pcm->private_data = chip;
+		strcpy(pcm->name, "Analog 3");
+		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+						      snd_dma_pci_data(chip->pci),
+						      DEFAULT_BUFFER_BYTES,
 						      BUFFER_BYTES_MAX);
 	}
 	return 0;