1 files changed, 0 insertions, 284 deletions
diff --git a/sound/soc/dwc/designware_pcm.c b/sound/soc/dwc/designware_pcm.c
deleted file mode 100644
index 459ec861e6b6..000000000000
--- a/sound/soc/dwc/designware_pcm.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/*
- * ALSA SoC Synopsys PIO PCM for I2S driver
- *
- * sound/soc/dwc/designware_pcm.c
- *
- * Copyright (C) 2016 Synopsys
- * Jose Abreu <joabreu@synopsys.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/io.h>
-#include <linux/rcupdate.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include "local.h"
-
-#define BUFFER_BYTES_MAX	(3 * 2 * 8 * PERIOD_BYTES_MIN)
-#define PERIOD_BYTES_MIN	4096
-#define PERIODS_MIN		2
-
-#define dw_pcm_tx_fn(sample_bits) \
-static unsigned int dw_pcm_tx_##sample_bits(struct dw_i2s_dev *dev, \
-		struct snd_pcm_runtime *runtime, unsigned int tx_ptr, \
-		bool *period_elapsed) \
-{ \
-	const u##sample_bits (*p)[2] = (void *)runtime->dma_area; \
-	unsigned int period_pos = tx_ptr % runtime->period_size; \
-	int i; \
-\
-	for (i = 0; i < dev->fifo_th; i++) { \
-		iowrite32(p[tx_ptr][0], dev->i2s_base + LRBR_LTHR(0)); \
-		iowrite32(p[tx_ptr][1], dev->i2s_base + RRBR_RTHR(0)); \
-		period_pos++; \
-		if (++tx_ptr >= runtime->buffer_size) \
-			tx_ptr = 0; \
-	} \
-	*period_elapsed = period_pos >= runtime->period_size; \
-	return tx_ptr; \
-}
-
-#define dw_pcm_rx_fn(sample_bits) \
-static unsigned int dw_pcm_rx_##sample_bits(struct dw_i2s_dev *dev, \
-		struct snd_pcm_runtime *runtime, unsigned int rx_ptr, \
-		bool *period_elapsed) \
-{ \
-	u##sample_bits (*p)[2] = (void *)runtime->dma_area; \
-	unsigned int period_pos = rx_ptr % runtime->period_size; \
-	int i; \
-\
-	for (i = 0; i < dev->fifo_th; i++) { \
-		p[rx_ptr][0] = ioread32(dev->i2s_base + LRBR_LTHR(0)); \
-		p[rx_ptr][1] = ioread32(dev->i2s_base + RRBR_RTHR(0)); \
-		period_pos++; \
-		if (++rx_ptr >= runtime->buffer_size) \
-			rx_ptr = 0; \
-	} \
-	*period_elapsed = period_pos >= runtime->period_size; \
-	return rx_ptr; \
-}
-
-dw_pcm_tx_fn(16);
-dw_pcm_tx_fn(32);
-dw_pcm_rx_fn(16);
-dw_pcm_rx_fn(32);
-
-#undef dw_pcm_tx_fn
-#undef dw_pcm_rx_fn
-
-static const struct snd_pcm_hardware dw_pcm_hardware = {
-	.info = SNDRV_PCM_INFO_INTERLEAVED |
-		SNDRV_PCM_INFO_MMAP |
-		SNDRV_PCM_INFO_MMAP_VALID |
-		SNDRV_PCM_INFO_BLOCK_TRANSFER,
-	.rates = SNDRV_PCM_RATE_32000 |
-		SNDRV_PCM_RATE_44100 |
-		SNDRV_PCM_RATE_48000,
-	.rate_min = 32000,
-	.rate_max = 48000,
-	.formats = SNDRV_PCM_FMTBIT_S16_LE |
-		SNDRV_PCM_FMTBIT_S24_LE |
-		SNDRV_PCM_FMTBIT_S32_LE,
-	.channels_min = 2,
-	.channels_max = 2,
-	.buffer_bytes_max = BUFFER_BYTES_MAX,
-	.period_bytes_min = PERIOD_BYTES_MIN,
-	.period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN,
-	.periods_min = PERIODS_MIN,
-	.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
-	.fifo_size = 16,
-};
-
-static void dw_pcm_transfer(struct dw_i2s_dev *dev, bool push)
-{
-	struct snd_pcm_substream *substream;
-	bool active, period_elapsed;
-
-	rcu_read_lock();
-	if (push)
-		substream = rcu_dereference(dev->tx_substream);
-	else
-		substream = rcu_dereference(dev->rx_substream);
-	active = substream && snd_pcm_running(substream);
-	if (active) {
-		unsigned int ptr;
-		unsigned int new_ptr;
-
-		if (push) {
-			ptr = READ_ONCE(dev->tx_ptr);
-			new_ptr = dev->tx_fn(dev, substream->runtime, ptr,
-					&period_elapsed);
-			cmpxchg(&dev->tx_ptr, ptr, new_ptr);
-		} else {
-			ptr = READ_ONCE(dev->rx_ptr);
-			new_ptr = dev->rx_fn(dev, substream->runtime, ptr,
-					&period_elapsed);
-			cmpxchg(&dev->rx_ptr, ptr, new_ptr);
-		}
-
-		if (period_elapsed)
-			snd_pcm_period_elapsed(substream);
-	}
-	rcu_read_unlock();
-}
-
-void dw_pcm_push_tx(struct dw_i2s_dev *dev)
-{
-	dw_pcm_transfer(dev, true);
-}
-EXPORT_SYMBOL_GPL(dw_pcm_push_tx);
-
-void dw_pcm_pop_rx(struct dw_i2s_dev *dev)
-{
-	dw_pcm_transfer(dev, false);
-}
-EXPORT_SYMBOL_GPL(dw_pcm_pop_rx);
-
-static int dw_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-
-	snd_soc_set_runtime_hwparams(substream, &dw_pcm_hardware);
-	snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
-	runtime->private_data = dev;
-
-	return 0;
-}
-
-static int dw_pcm_close(struct snd_pcm_substream *substream)
-{
-	synchronize_rcu();
-	return 0;
-}
-
-static int dw_pcm_hw_params(struct snd_pcm_substream *substream,
-		struct snd_pcm_hw_params *hw_params)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct dw_i2s_dev *dev = runtime->private_data;
-	int ret;
-
-	switch (params_channels(hw_params)) {
-	case 2:
-		break;
-	default:
-		dev_err(dev->dev, "invalid channels number\n");
-		return -EINVAL;
-	}
-
-	switch (params_format(hw_params)) {
-	case SNDRV_PCM_FORMAT_S16_LE:
-		dev->tx_fn = dw_pcm_tx_16;
-		dev->rx_fn = dw_pcm_rx_16;
-		break;
-	case SNDRV_PCM_FORMAT_S24_LE:
-	case SNDRV_PCM_FORMAT_S32_LE:
-		dev->tx_fn = dw_pcm_tx_32;
-		dev->rx_fn = dw_pcm_rx_32;
-		break;
-	default:
-		dev_err(dev->dev, "invalid format\n");
-		return -EINVAL;
-	}
-
-	ret = snd_pcm_lib_malloc_pages(substream,
-			params_buffer_bytes(hw_params));
-	if (ret < 0)
-		return ret;
-	else
-		return 0;
-}
-
-static int dw_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
-static int dw_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct dw_i2s_dev *dev = runtime->private_data;
-	int ret = 0;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-			WRITE_ONCE(dev->tx_ptr, 0);
-			rcu_assign_pointer(dev->tx_substream, substream);
-		} else {
-			WRITE_ONCE(dev->rx_ptr, 0);
-			rcu_assign_pointer(dev->rx_substream, substream);
-		}
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			rcu_assign_pointer(dev->tx_substream, NULL);
-		else
-			rcu_assign_pointer(dev->rx_substream, NULL);
-		break;
-	default:
-		ret = -EINVAL;
-		break;
-	}
-
-	return ret;
-}
-
-static snd_pcm_uframes_t dw_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct dw_i2s_dev *dev = runtime->private_data;
-	snd_pcm_uframes_t pos;
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		pos = READ_ONCE(dev->tx_ptr);
-	else
-		pos = READ_ONCE(dev->rx_ptr);
-
-	return pos < runtime->buffer_size ? pos : 0;
-}
-
-static int dw_pcm_new(struct snd_soc_pcm_runtime *rtd)
-{
-	size_t size = dw_pcm_hardware.buffer_bytes_max;
-
-	return snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
-			SNDRV_DMA_TYPE_CONTINUOUS,
-			snd_dma_continuous_data(GFP_KERNEL), size, size);
-}
-
-static void dw_pcm_free(struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
-static const struct snd_pcm_ops dw_pcm_ops = {
-	.open = dw_pcm_open,
-	.close = dw_pcm_close,
-	.ioctl = snd_pcm_lib_ioctl,
-	.hw_params = dw_pcm_hw_params,
-	.hw_free = dw_pcm_hw_free,
-	.trigger = dw_pcm_trigger,
-	.pointer = dw_pcm_pointer,
-};
-
-static const struct snd_soc_platform_driver dw_pcm_platform = {
-	.pcm_new = dw_pcm_new,
-	.pcm_free = dw_pcm_free,
-	.ops = &dw_pcm_ops,
-};
-
-int dw_pcm_register(struct platform_device *pdev)
-{
-	return devm_snd_soc_register_platform(&pdev->dev, &dw_pcm_platform);
-}
-EXPORT_SYMBOL_GPL(dw_pcm_register);