On 2/13/2018 10:28 PM, srinivas.kandagatla@linaro.org wrote:
From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
This patch adds support to q6asm dai driver which configures Q6ASM streams to pass pcm data.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org
[..]
diff --git a/sound/soc/qcom/qdsp6/q6asm-dai.c b/sound/soc/qcom/qdsp6/q6asm-dai.c new file mode 100644 index 000000000000..7c5e94b2ced4 --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6asm-dai.c @@ -0,0 +1,621 @@ +// SPDX-License-Identifier: GPL-2.0 +/*
- Copyright (c) 2011-2016, The Linux Foundation
- Copyright (c) 2017, Linaro Limited
- */
+#include <linux/init.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/pcm.h> +#include <asm/dma.h>
[..]
+static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
- .count = ARRAY_SIZE(supported_sample_rates),
- .list = supported_sample_rates,
- .mask = 0,
+};
+static void event_handler(uint32_t opcode, uint32_t token,
uint32_t *payload, void *priv)+{
- struct q6asm_dai_rtd *prtd = priv;
- struct snd_pcm_substream *substream = prtd->substream;
- switch (opcode) {
- case ASM_CLIENT_EVENT_CMD_RUN_DONE:
Need to add support for V2 version of opcodes
q6asm_write_async(prtd->audio_client,prtd->pcm_count, 0, 0, NO_TIMESTAMP);break;- case ASM_CLIENT_EVENT_CMD_EOS_DONE:
prtd->state = Q6ASM_STREAM_STOPPED;break;- case ASM_CLIENT_EVENT_DATA_WRITE_DONE: {
prtd->pcm
[..]
+static int q6asm_dai_trigger(struct snd_pcm_substream *substream, int cmd) +{
- int ret = 0;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct q6asm_dai_rtd *prtd = runtime->private_data;
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);break;
below two cases can be combined with START if no change
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);break;- case SNDRV_PCM_TRIGGER_STOP:
prtd->state = Q6ASM_STREAM_STOPPED;ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);break;- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);break;- default:
ret = -EINVAL;break;- }
- return ret;
+}
+static int q6asm_dai_open(struct snd_pcm_substream *substream) +{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = soc_prtd->cpu_dai;
- struct q6asm_dai_rtd *prtd;
- struct q6asm_dai_data *pdata;
- struct device *dev = soc_prtd->platform->dev;
- int ret = 0;
- int stream_id;
- stream_id = cpu_dai->driver->id;
- pdata = q6asm_get_dai_data(dev);
- if (!pdata) {
pr_err("Platform data not found ..\n");return -EINVAL;- }
- prtd = kzalloc(sizeof(struct q6asm_dai_rtd), GFP_KERNEL);
- if (prtd == NULL)
return -ENOMEM;- prtd->substream = substream;
- prtd->audio_client = q6asm_audio_client_alloc(dev,
(q6asm_cb)event_handler, prtd, stream_id);- if (!prtd->audio_client) {
pr_info("%s: Could not allocate memory\n", __func__);kfree(prtd);return -ENOMEM;- }
+// prtd->audio_client->dev = dev;
cleanup this
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
runtime->hw = q6asm_dai_hardware_playback;- ret = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,&constraints_sample_rates);
[..]
+static int q6asm_dai_pcm_new(struct snd_soc_pcm_runtime *rtd) +{
- struct snd_pcm_substream *substream;
- struct of_phandle_args args;
- struct device_node *node;
- struct q6asm_dai_data *pdata;
- struct snd_pcm *pcm = rtd->pcm;
- struct device *dev;
- int size, ret;
- dev = rtd->platform->dev->parent;
- node = dev->of_node;
- pdata = q6asm_get_dai_data(rtd->platform->dev);
- ret = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
- if (ret < 0)
pdata->sid = -1;- else
pdata->sid = args.args[0];
iommus for sdm845 is 16bit value. we need to have sid_mask which is 0x1 in sdm845. We need to mask sid with 0x1 to get proper sid. pdata->sid &= 0x1;
- substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
- size = q6asm_dai_hardware_playback.buffer_bytes_max;
- ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
&substream->dma_buffer);- if (ret)
dev_err(dev, "Cannot allocate buffer(s)\n");- return ret;
+}