[ALSA] Implement S32_LE(24bit) and 96000 capture rates etc. (883130b4) · Commits · e / devices / android_kernel_fairphone_FP3

sound/pci/ca0106/ca0106_main.c

+59 −4

Original line number	Diff line number	Diff line
		@@ -216,10 +216,10 @@ static snd_pcm_hardware_t snd_ca0106_capture_hw = {
		SNDRV_PCM_INFO_INTERLEAVED \|
		SNDRV_PCM_INFO_BLOCK_TRANSFER \|
		SNDRV_PCM_INFO_MMAP_VALID),
		.formats = SNDRV_PCM_FMTBIT_S16_LE,
		.rates = SNDRV_PCM_RATE_48000,
		.rate_min = 48000,
		.rate_max = 48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S32_LE,
		.rates = SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_96000 \| SNDRV_PCM_RATE_192000,
		.rate_min = 44100,
		.rate_max = 192000,
		.channels_min = 2,
		.channels_max = 2,
		.buffer_bytes_max = ((65536 - 64) * 8),
		@@ -607,6 +607,61 @@ static int snd_ca0106_pcm_prepare_capture(snd_pcm_substream_t *substream)
		snd_pcm_runtime_t *runtime = substream->runtime;
		ca0106_pcm_t *epcm = runtime->private_data;
		int channel = epcm->channel_id;
		u32 hcfg_mask = HCFG_CAPTURE_S32_LE;
		u32 hcfg_set = 0x00000000;
		u32 hcfg;
		u32 over_sampling=0x2;
		u32 reg71_mask = 0x0000c000 ; /* Global. Set ADC rate. */
		u32 reg71_set = 0;
		u32 reg71;

		//snd_printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, periods=%u, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, runtime->periods, frames_to_bytes(runtime, 1));
		//snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
		//snd_printk("dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
		/* reg71 controls ADC rate. */
		switch (runtime->rate) {
		case 44100:
		reg71_set = 0x00004000;
		break;
		case 48000:
		reg71_set = 0;
		break;
		case 96000:
		reg71_set = 0x00008000;
		over_sampling=0xa;
		break;
		case 192000:
		reg71_set = 0x0000c000;
		over_sampling=0xa;
		break;
		default:
		reg71_set = 0;
		break;
		}
		/* Format is a global setting */
		/* FIXME: Only let the first channel accessed set this. */
		switch (runtime->format) {
		case SNDRV_PCM_FORMAT_S16_LE:
		hcfg_set = 0;
		break;
		case SNDRV_PCM_FORMAT_S32_LE:
		hcfg_set = HCFG_CAPTURE_S32_LE;
		break;
		default:
		hcfg_set = 0;
		break;
		}
		hcfg = inl(emu->port + HCFG) ;
		hcfg = (hcfg & ~hcfg_mask) \| hcfg_set;
		outl(hcfg, emu->port + HCFG);
		reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
		reg71 = (reg71 & ~reg71_mask) \| reg71_set;
		snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
		if (emu->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
		snd_ca0106_i2c_write(emu, ADC_MASTER, over_sampling); /* Adjust the over sampler to better suit the capture rate. */
		}


		//printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, frames_to_bytes(runtime, 1));
		snd_ca0106_ptr_write(emu, 0x13, channel, 0);
		snd_ca0106_ptr_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);