[alsa-devel] [PATCH 3/6] ASoC: Intel: Add Haswell and Broadwell PCM platform driver
Liam Girdwood
liam.r.girdwood at linux.intel.com
Thu Feb 20 22:48:44 CET 2014
Add the Haswell and Broadwell PCM DSP platform driver. This driver uses
the IPC driver for communication with the SST DSP.
Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
sound/soc/intel/sst-haswell-pcm.c | 872 ++++++++++++++++++++++++++++++++++++++
1 file changed, 872 insertions(+)
create mode 100644 sound/soc/intel/sst-haswell-pcm.c
diff --git a/sound/soc/intel/sst-haswell-pcm.c b/sound/soc/intel/sst-haswell-pcm.c
new file mode 100644
index 0000000..0a32dd1
--- /dev/null
+++ b/sound/soc/intel/sst-haswell-pcm.c
@@ -0,0 +1,872 @@
+/*
+ * Intel SST Haswell/Broadwell PCM Support
+ *
+ * Copyright (C) 2013, Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/compress_driver.h>
+
+#include "sst-haswell-ipc.h"
+#include "sst-dsp-priv.h"
+#include "sst-dsp.h"
+
+#define HSW_PCM_COUNT 6
+#define HSW_VOLUME_MAX 0x7FFFFFFF /* 0dB */
+
+/* simple volume table */
+static const u32 volume_map[] = {
+ HSW_VOLUME_MAX >> 30,
+ HSW_VOLUME_MAX >> 29,
+ HSW_VOLUME_MAX >> 28,
+ HSW_VOLUME_MAX >> 27,
+ HSW_VOLUME_MAX >> 26,
+ HSW_VOLUME_MAX >> 25,
+ HSW_VOLUME_MAX >> 24,
+ HSW_VOLUME_MAX >> 23,
+ HSW_VOLUME_MAX >> 22,
+ HSW_VOLUME_MAX >> 21,
+ HSW_VOLUME_MAX >> 20,
+ HSW_VOLUME_MAX >> 19,
+ HSW_VOLUME_MAX >> 18,
+ HSW_VOLUME_MAX >> 17,
+ HSW_VOLUME_MAX >> 16,
+ HSW_VOLUME_MAX >> 15,
+ HSW_VOLUME_MAX >> 14,
+ HSW_VOLUME_MAX >> 13,
+ HSW_VOLUME_MAX >> 12,
+ HSW_VOLUME_MAX >> 11,
+ HSW_VOLUME_MAX >> 10,
+ HSW_VOLUME_MAX >> 9,
+ HSW_VOLUME_MAX >> 8,
+ HSW_VOLUME_MAX >> 7,
+ HSW_VOLUME_MAX >> 6,
+ HSW_VOLUME_MAX >> 5,
+ HSW_VOLUME_MAX >> 4,
+ HSW_VOLUME_MAX >> 3,
+ HSW_VOLUME_MAX >> 2,
+ HSW_VOLUME_MAX >> 1,
+ HSW_VOLUME_MAX >> 0,
+};
+
+#define HSW_PCM_PERIODS_MAX 64
+#define HSW_PCM_PERIODS_MIN 2
+
+static const struct snd_pcm_hardware hsw_pcm_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FORMAT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ .period_bytes_min = PAGE_SIZE,
+ .period_bytes_max = (HSW_PCM_PERIODS_MAX / HSW_PCM_PERIODS_MIN) * PAGE_SIZE,
+ .periods_min = HSW_PCM_PERIODS_MIN,
+ .periods_max = HSW_PCM_PERIODS_MAX,
+ .buffer_bytes_max = HSW_PCM_PERIODS_MAX * PAGE_SIZE,
+};
+
+/* private data for each PCM DSP stream */
+struct hsw_pcm_data {
+ int dai_id;
+ struct sst_hsw_stream *stream;
+ u32 volume[2];
+ struct snd_pcm_substream *substream;
+ struct snd_compr_stream *cstream;
+ unsigned int wpos;
+ struct mutex mutex;
+};
+
+/* private data for the driver */
+struct hsw_priv_data {
+ /* runtime DSP */
+ struct sst_hsw *hsw;
+
+ /* page tables */
+ unsigned char *pcm_pg[HSW_PCM_COUNT][2];
+
+ /* DAI data */
+ struct hsw_pcm_data pcm[HSW_PCM_COUNT];
+};
+
+static inline u32 hsw_mixer_to_ipc(unsigned int value)
+{
+ if (value >= ARRAY_SIZE(volume_map))
+ return volume_map[0];
+ else
+ return volume_map[value];
+}
+
+static inline unsigned int hsw_ipc_to_mixer(u32 value)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(volume_map); i++) {
+ if (volume_map[i] >= value)
+ return i;
+ }
+
+ return i - 1;
+}
+
+static int hsw_stream_volume_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(platform);
+ struct hsw_pcm_data *pcm_data = &pdata->pcm[mc->reg];
+ struct sst_hsw *hsw = pdata->hsw;
+ u32 volume;
+
+ mutex_lock(&pcm_data->mutex);
+
+ if (!pcm_data->stream) {
+ pcm_data->volume[0] =
+ hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
+ pcm_data->volume[1] =
+ hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
+ mutex_unlock(&pcm_data->mutex);
+ return 0;
+ }
+
+ if (ucontrol->value.integer.value[0] ==
+ ucontrol->value.integer.value[1]) {
+ volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
+ sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 2, volume);
+ } else {
+ volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
+ sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 0, volume);
+ volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
+ sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 1, volume);
+ }
+
+ mutex_unlock(&pcm_data->mutex);
+ return 0;
+}
+
+static int hsw_stream_volume_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(platform);
+ struct hsw_pcm_data *pcm_data = &pdata->pcm[mc->reg];
+ struct sst_hsw *hsw = pdata->hsw;
+ u32 volume;
+
+ mutex_lock(&pcm_data->mutex);
+
+ if (!pcm_data->stream) {
+ ucontrol->value.integer.value[0] =
+ hsw_ipc_to_mixer(pcm_data->volume[0]);
+ ucontrol->value.integer.value[1] =
+ hsw_ipc_to_mixer(pcm_data->volume[1]);
+ mutex_unlock(&pcm_data->mutex);
+ return 0;
+ }
+
+ sst_hsw_stream_get_volume(hsw, pcm_data->stream, 0, 0, &volume);
+ ucontrol->value.integer.value[0] = hsw_ipc_to_mixer(volume);
+ sst_hsw_stream_get_volume(hsw, pcm_data->stream, 0, 1, &volume);
+ ucontrol->value.integer.value[1] = hsw_ipc_to_mixer(volume);
+ mutex_unlock(&pcm_data->mutex);
+
+ return 0;
+}
+
+static int hsw_volume_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
+ struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
+ struct sst_hsw *hsw = pdata->hsw;
+ u32 volume;
+
+ if (ucontrol->value.integer.value[0] ==
+ ucontrol->value.integer.value[1]) {
+
+ volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
+ sst_hsw_mixer_set_volume(hsw, 0, 2, volume);
+
+ } else {
+ volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
+ sst_hsw_mixer_set_volume(hsw, 0, 0, volume);
+
+ volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
+ sst_hsw_mixer_set_volume(hsw, 0, 1, volume);
+ }
+
+ return 0;
+}
+
+static int hsw_volume_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
+ struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
+ struct sst_hsw *hsw = pdata->hsw;
+ unsigned int volume = 0;
+
+ sst_hsw_mixer_get_volume(hsw, 0, 0, &volume);
+ ucontrol->value.integer.value[0] = hsw_ipc_to_mixer(volume);
+
+ sst_hsw_mixer_get_volume(hsw, 0, 1, &volume);
+ ucontrol->value.integer.value[1] = hsw_ipc_to_mixer(volume);
+
+ return 0;
+}
+
+/* TLV used by both global and stream volumes */
+static const DECLARE_TLV_DB_SCALE(hsw_vol_tlv, -9000, 300, 1);
+
+/* System Pin has no volume control */
+static const struct snd_kcontrol_new hsw_volume_controls[] = {
+ /* Global DSP volume */
+ SOC_DOUBLE_EXT_TLV("Master Playback Volume", 0, 0, 8,
+ ARRAY_SIZE(volume_map) -1, 0,
+ hsw_volume_get, hsw_volume_put, hsw_vol_tlv),
+ /* Offload 0 volume */
+ SOC_DOUBLE_EXT_TLV("Media0 Playback Volume", 1, 0, 8,
+ ARRAY_SIZE(volume_map), 0,
+ hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
+ /* Offload 1 volume */
+ SOC_DOUBLE_EXT_TLV("Media1 Playback Volume", 2, 0, 8,
+ ARRAY_SIZE(volume_map), 0,
+ hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
+ /* Loopback volume */
+ SOC_DOUBLE_EXT_TLV("Loopback Capture Volume", 3, 0, 8,
+ ARRAY_SIZE(volume_map), 0,
+ hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
+ /* Mic Capture volume */
+ SOC_DOUBLE_EXT_TLV("Mic Capture Volume", 4, 0, 8,
+ ARRAY_SIZE(volume_map), 0,
+ hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
+};
+
+/* Create DMA buffer page table for DSP */
+static int create_adsp_page_table(struct hsw_priv_data *pdata,
+ struct snd_soc_pcm_runtime *rtd,
+ unsigned char *dma_area, size_t size, int pcm, int stream)
+{
+ int i, pages;
+
+ if (size % PAGE_SIZE)
+ pages = (size / PAGE_SIZE) + 1;
+ else
+ pages = size / PAGE_SIZE;
+
+ dev_dbg(rtd->dev, "generating page table for %p size 0x%zu pages %d\n",
+ dma_area, size, pages);
+
+ for (i = 0; i < pages; i++) {
+ u32 idx = (((i << 2) + i)) >> 1;
+ u32 pfn = (virt_to_phys(dma_area + i * PAGE_SIZE)) >> PAGE_SHIFT;
+ u32 *pg_table;
+
+ dev_dbg(rtd->dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn);
+
+ pg_table = (u32*)(pdata->pcm_pg[pcm][stream] + idx);
+
+ if (i & 1)
+ *pg_table |= (pfn << 4);
+ else
+ *pg_table |= pfn;
+ }
+
+ return 0;
+}
+
+/* this may get called several times by oss emulation */
+static int hsw_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_hsw *hsw = pdata->hsw;
+ struct sst_module *module_data;
+ struct sst_dsp *dsp;
+ enum sst_hsw_stream_type stream_type;
+ enum sst_hsw_stream_path_id path_id;
+ u32 rate, bits, map, pages, module_id;
+ u8 channels;
+ int ret;
+
+ /* stream direction */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
+ else
+ path_id = SST_HSW_STREAM_PATH_SSP0_IN;
+
+ /* DSP stream type depends on DAI ID */
+ switch (rtd->cpu_dai->id) {
+ case 0:
+ stream_type = SST_HSW_STREAM_TYPE_SYSTEM;
+ module_id = SST_HSW_MODULE_PCM_SYSTEM;
+ break;
+ case 1:
+ case 2:
+ stream_type = SST_HSW_STREAM_TYPE_RENDER;
+ module_id = SST_HSW_MODULE_PCM;
+ break;
+ case 3:
+ /* path ID needs to be OUT for loopback */
+ stream_type = SST_HSW_STREAM_TYPE_LOOPBACK;
+ path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
+ module_id = SST_HSW_MODULE_PCM_REFERENCE;
+ break;
+ case 4:
+ stream_type = SST_HSW_STREAM_TYPE_CAPTURE;
+ module_id = SST_HSW_MODULE_PCM_CAPTURE;
+ break;
+ default:
+ dev_err(rtd->dev, "error: invalid DAI ID %d\n",
+ rtd->cpu_dai->id);
+ return -EINVAL;
+ };
+
+ ret = sst_hsw_stream_format(hsw, pcm_data->stream,
+ path_id, stream_type, SST_HSW_STREAM_FORMAT_PCM_FORMAT);
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: failed to set format %d\n", ret);
+ return ret;
+ }
+
+ rate = params_rate(params);
+ ret = sst_hsw_stream_set_rate(hsw, pcm_data->stream, rate);
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: could not set rate %d\n", rate);
+ return ret;
+ }
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ bits = SST_HSW_DEPTH_16BIT;
+ sst_hsw_stream_set_valid(hsw, pcm_data->stream, 16);
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ bits = SST_HSW_DEPTH_24BIT;
+ sst_hsw_stream_set_valid(hsw, pcm_data->stream, 32);
+ break;
+ default:
+ dev_err(rtd->dev, "error: invalid format %d\n",
+ params_format(params));
+ return -EINVAL;
+ }
+
+ ret = sst_hsw_stream_set_bits(hsw, pcm_data->stream, bits);
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: could not set bits %d\n", bits);
+ return ret;
+ }
+
+ /* we only support stereo atm */
+ channels = params_channels(params);
+ if (channels != 2) {
+ dev_err(rtd->dev, "error: invalid channels %d\n", channels);
+ return -EINVAL;
+ }
+
+ map = create_channel_map(SST_HSW_CHANNEL_CONFIG_STEREO);
+ sst_hsw_stream_set_map_config(hsw, pcm_data->stream,
+ map, SST_HSW_CHANNEL_CONFIG_STEREO);
+
+ ret = sst_hsw_stream_set_channels(hsw, pcm_data->stream, channels);
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: could not set channels %d\n",
+ channels);
+ return ret;
+ }
+
+ ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: could not allocate %d bytes for PCM %d\n",
+ params_buffer_bytes(params), ret);
+ return ret;
+ }
+
+ ret = create_adsp_page_table(pdata, rtd, runtime->dma_area,
+ runtime->dma_bytes, rtd->cpu_dai->id, substream->stream);
+ if (ret < 0)
+ return ret;
+
+ sst_hsw_stream_set_style(hsw, pcm_data->stream,
+ SST_HSW_INTERLEAVING_PER_CHANNEL);
+
+ if (runtime->dma_bytes % PAGE_SIZE)
+ pages = (runtime->dma_bytes / PAGE_SIZE) + 1;
+ else
+ pages = runtime->dma_bytes / PAGE_SIZE;
+
+ ret = sst_hsw_stream_buffer(hsw, pcm_data->stream,
+ virt_to_phys(pdata->pcm_pg[rtd->cpu_dai->id][substream->stream]),
+ pages, runtime->dma_bytes, 0,
+ (u32)(virt_to_phys(runtime->dma_area) >> PAGE_SHIFT));
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: failed to set DMA buffer %d\n", ret);
+ return ret;
+ }
+
+ dsp = sst_hsw_get_dsp(hsw);
+
+ module_data = sst_module_get_from_id(dsp, module_id);
+ if (module_data == NULL) {
+ dev_err(rtd->dev, "error: failed to get module config\n");
+ return -EINVAL;
+ }
+
+ /* we use hardcoded memory offsets atm, will be updated for new FW */
+ if (stream_type == SST_HSW_STREAM_TYPE_CAPTURE) {
+ sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
+ SST_HSW_MODULE_PCM_CAPTURE, module_data->entry);
+ sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
+ 0x449400, 0x4000);
+ sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
+ 0x400000, 0);
+ } else { /* stream_type == SST_HSW_STREAM_TYPE_SYSTEM */
+ sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
+ SST_HSW_MODULE_PCM_SYSTEM, module_data->entry);
+
+ sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
+ module_data->offset, module_data->size);
+ sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
+ 0x44d400, 0x3800);
+
+ sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
+ module_data->offset, module_data->size);
+ sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
+ 0x400000, 0);
+ }
+
+ ret = sst_hsw_stream_commit(hsw, pcm_data->stream);
+ if (ret < 0) {
+ dev_err(rtd->dev, "error: failed to commit stream %d\n", ret);
+ return ret;
+ }
+
+ ret = sst_hsw_stream_pause(hsw, pcm_data->stream, 1);
+ if (ret < 0)
+ dev_err(rtd->dev, "error: failed to pause %d\n", ret);
+
+ return 0;
+}
+
+static int hsw_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ snd_pcm_lib_free_pages(substream);
+ return 0;
+}
+
+static int hsw_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_hsw *hsw = pdata->hsw;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ sst_hsw_stream_resume(hsw, pcm_data->stream, 0);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ sst_hsw_stream_pause(hsw, pcm_data->stream, 0);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data)
+{
+ struct hsw_pcm_data *pcm_data = data;
+ struct snd_pcm_substream *substream = pcm_data->substream;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ u32 pos;
+
+ pos = frames_to_bytes(runtime,
+ (runtime->control->appl_ptr % runtime->buffer_size));
+
+ dev_dbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
+
+ /* let alsa know we have play a period */
+ snd_pcm_period_elapsed(substream);
+ return pos;
+}
+
+static snd_pcm_uframes_t hsw_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_hsw *hsw = pdata->hsw;
+ snd_pcm_uframes_t offset;
+
+ offset = bytes_to_frames(runtime,
+ sst_hsw_get_dsp_position(hsw, pcm_data->stream));
+
+ dev_dbg(rtd->dev, "PCM: DMA pointer %zu bytes\n",
+ frames_to_bytes(runtime, (u32)offset));
+ return offset;
+}
+
+static int hsw_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct hsw_pcm_data *pcm_data;
+ struct sst_hsw *hsw = pdata->hsw;
+
+ pcm_data = &pdata->pcm[rtd->cpu_dai->id];
+
+ mutex_lock(&pcm_data->mutex);
+
+ snd_soc_pcm_set_drvdata(rtd, pcm_data);
+ pcm_data->substream = substream;
+
+ snd_soc_set_runtime_hwparams(substream, &hsw_pcm_hardware);
+
+ pcm_data->stream = sst_hsw_stream_new(hsw, rtd->cpu_dai->id,
+ hsw_notify_pointer, pcm_data);
+ if (pcm_data->stream == NULL) {
+ dev_err(rtd->dev, "error: failed to create stream\n");
+ mutex_unlock(&pcm_data->mutex);
+ return -EINVAL;
+ }
+
+ /* Set previous saved volume */
+ sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
+ 0, pcm_data->volume[0]);
+ sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
+ 1, pcm_data->volume[1]);
+
+ mutex_unlock(&pcm_data->mutex);
+ return 0;
+}
+
+static int hsw_pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_hsw *hsw = pdata->hsw;
+ int ret;
+
+ mutex_lock(&pcm_data->mutex);
+ ret = sst_hsw_stream_reset(hsw, pcm_data->stream);
+ if (ret < 0) {
+ dev_dbg(rtd->dev, "error: reset stream failed %d\n", ret);
+ goto out;
+ }
+
+ ret = sst_hsw_stream_free(hsw, pcm_data->stream);
+ if (ret < 0) {
+ dev_dbg(rtd->dev, "error: free stream failed %d\n", ret);
+ goto out;
+ }
+ pcm_data->stream = NULL;
+
+out:
+ mutex_unlock(&pcm_data->mutex);
+ return ret;
+}
+
+static struct snd_pcm_ops hsw_pcm_ops = {
+ .open = hsw_pcm_open,
+ .close = hsw_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = hsw_pcm_hw_params,
+ .hw_free = hsw_pcm_hw_free,
+ .trigger = hsw_pcm_trigger,
+ .pointer = hsw_pcm_pointer,
+ .mmap = snd_pcm_lib_default_mmap,
+};
+
+static void hsw_pcm_free(struct snd_pcm *pcm)
+{
+ snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+static int hsw_pcm_new(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_pcm *pcm = rtd->pcm;
+ int ret = 0;
+
+ ret = dma_coerce_mask_and_coherent(rtd->card->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+
+ if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
+ pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
+ ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
+ SNDRV_DMA_TYPE_DEV,
+ rtd->card->dev,
+ hsw_pcm_hardware.buffer_bytes_max,
+ hsw_pcm_hardware.buffer_bytes_max);
+ if (ret) {
+ dev_err(rtd->dev, "dma buffer allocation failed %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+#define HSW_FORMATS \
+ (SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE |\
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver hsw_dais[] = {
+ {
+ .name = "System Pin",
+ .playback = {
+ .stream_name = "System Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ },
+ {
+ /* PCM */
+ .name = "Offload0 Pin",
+ .playback = {
+ .stream_name = "Offload0 Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = HSW_FORMATS,
+ },
+ },
+ {
+ /* PCM */
+ .name = "Offload1 Pin",
+ .playback = {
+ .stream_name = "Offload1 Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = HSW_FORMATS,
+ },
+ },
+ {
+ .name = "Loopback Pin",
+ .capture = {
+ .stream_name = "Loopback Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = HSW_FORMATS,
+ },
+ },
+ {
+ .name = "Capture Pin",
+ .capture = {
+ .stream_name = "Analog Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = HSW_FORMATS,
+ },
+ },
+};
+
+static const struct snd_soc_dapm_widget widgets[] = {
+
+ /* Backend DAIs */
+ SND_SOC_DAPM_AIF_IN("SSP0 CODEC IN", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("SSP0 CODEC OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("SSP1 BT IN", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("SSP1 BT OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
+
+ /* Global Playback Mixer */
+ SND_SOC_DAPM_MIXER("Playback VMixer", SND_SOC_NOPM, 0, 0, NULL, 0),
+};
+
+static const struct snd_soc_dapm_route graph[] = {
+
+ /* Playback Mixer */
+ {"Playback VMixer", NULL, "System Playback"},
+ {"Playback VMixer", NULL, "Offload0 Playback"},
+ {"Playback VMixer", NULL, "Offload1 Playback"},
+
+ {"SSP0 CODEC OUT", NULL, "Playback VMixer"},
+
+ {"Analog Capture", NULL, "SSP0 CODEC IN"},
+};
+
+static int hsw_pcm_probe(struct snd_soc_platform *platform)
+{
+ struct sst_pdata *pdata = dev_get_platdata(platform->dev);
+ struct hsw_priv_data *priv_data;
+ int i;
+
+ if (!pdata)
+ return -ENODEV;
+
+ priv_data = devm_kzalloc(platform->dev, sizeof(*priv_data), GFP_KERNEL);
+ priv_data->hsw = pdata->dsp;
+ snd_soc_platform_set_drvdata(platform, priv_data);
+
+ /* allocate DSP buffer page tables */
+ for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
+
+ mutex_init(&priv_data->pcm[i].mutex);
+
+ /* playback */
+ if (hsw_dais[i].playback.channels_min) {
+ priv_data->pcm_pg[i][0] = kzalloc(PAGE_SIZE, GFP_DMA);
+ if (priv_data->pcm_pg[i][0] == NULL)
+ goto err;
+ }
+
+ /* capture */
+ if (hsw_dais[i].capture.channels_min) {
+ priv_data->pcm_pg[i][1] = kzalloc(PAGE_SIZE, GFP_DMA);
+ if (priv_data->pcm_pg[i][1] == NULL)
+ goto err;
+ }
+ }
+
+ return 0;
+
+err:
+ for (;i >= 0; i--) {
+ if (hsw_dais[i].playback.channels_min)
+ kfree(priv_data->pcm_pg[i][0]);
+ if (hsw_dais[i].capture.channels_min)
+ kfree(priv_data->pcm_pg[i][1]);
+ }
+ return -ENOMEM;
+}
+
+static int hsw_pcm_remove(struct snd_soc_platform *platform)
+{
+ struct hsw_priv_data *priv_data =
+ snd_soc_platform_get_drvdata(platform);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
+ if (hsw_dais[i].playback.channels_min)
+ kfree(priv_data->pcm_pg[i][0]);
+ if (hsw_dais[i].capture.channels_min)
+ kfree(priv_data->pcm_pg[i][1]);
+ }
+
+ return 0;
+}
+
+static struct snd_soc_platform_driver hsw_soc_platform = {
+ .probe = hsw_pcm_probe,
+ .remove = hsw_pcm_remove,
+ .ops = &hsw_pcm_ops,
+ .pcm_new = hsw_pcm_new,
+ .pcm_free = hsw_pcm_free,
+ .controls = hsw_volume_controls,
+ .num_controls = ARRAY_SIZE(hsw_volume_controls),
+ .dapm_widgets = widgets,
+ .num_dapm_widgets = ARRAY_SIZE(widgets),
+ .dapm_routes = graph,
+ .num_dapm_routes = ARRAY_SIZE(graph),
+};
+
+static const struct snd_soc_component_driver hsw_dai_component = {
+ .name = "haswell-dai",
+};
+
+static int hsw_pcm_dev_probe(struct platform_device *pdev)
+{
+ struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
+ int ret;
+
+ ret = sst_hsw_dsp_init(&pdev->dev, sst_pdata);
+ if (ret < 0)
+ return -ENODEV;
+
+ ret = snd_soc_register_platform(&pdev->dev, &hsw_soc_platform);
+ if (ret < 0)
+ goto err_plat;
+
+ ret = snd_soc_register_component(&pdev->dev, &hsw_dai_component,
+ hsw_dais, ARRAY_SIZE(hsw_dais));
+ if (ret < 0)
+ goto err_comp;
+
+ return 0;
+
+err_comp:
+ snd_soc_unregister_platform(&pdev->dev);
+err_plat:
+ sst_hsw_dsp_free(&pdev->dev, sst_pdata);
+ return 0;
+}
+
+static int hsw_pcm_dev_remove(struct platform_device *pdev)
+{
+ struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
+
+ snd_soc_unregister_platform(&pdev->dev);
+ snd_soc_unregister_component(&pdev->dev);
+ sst_hsw_dsp_free(&pdev->dev, sst_pdata);
+
+ return 0;
+}
+
+static struct platform_driver hsw_pcm_driver = {
+ .driver = {
+ .name = "haswell-pcm-audio",
+ .owner = THIS_MODULE,
+ },
+
+ .probe = hsw_pcm_dev_probe,
+ .remove = hsw_pcm_dev_remove,
+};
+module_platform_driver(hsw_pcm_driver);
+
+MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
+MODULE_DESCRIPTION("Haswell/Lynxpoint + Broadwell/Wildcatpoint PCM");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:haswell-pcm-audio");
--
1.8.3.2
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