609 lines
16 KiB
C
609 lines
16 KiB
C
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/*
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* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* lpass-platform.c -- ALSA SoC platform driver for QTi LPASS
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*/
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#include <linux/dma-mapping.h>
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#include <linux/export.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <sound/pcm_params.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include "lpass-lpaif-reg.h"
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#include "lpass.h"
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#define DRV_NAME "lpass-platform"
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struct lpass_pcm_data {
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int dma_ch;
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int i2s_port;
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};
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#define LPASS_PLATFORM_BUFFER_SIZE (16 * 1024)
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#define LPASS_PLATFORM_PERIODS 2
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static const struct snd_pcm_hardware lpass_platform_pcm_hardware = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_PAUSE |
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SNDRV_PCM_INFO_RESUME,
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.formats = SNDRV_PCM_FMTBIT_S16 |
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SNDRV_PCM_FMTBIT_S24 |
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SNDRV_PCM_FMTBIT_S32,
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.rates = SNDRV_PCM_RATE_8000_192000,
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.rate_min = 8000,
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.rate_max = 192000,
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.channels_min = 1,
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.channels_max = 8,
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.buffer_bytes_max = LPASS_PLATFORM_BUFFER_SIZE,
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.period_bytes_max = LPASS_PLATFORM_BUFFER_SIZE /
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LPASS_PLATFORM_PERIODS,
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.period_bytes_min = LPASS_PLATFORM_BUFFER_SIZE /
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LPASS_PLATFORM_PERIODS,
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.periods_min = LPASS_PLATFORM_PERIODS,
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.periods_max = LPASS_PLATFORM_PERIODS,
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.fifo_size = 0,
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};
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static int lpass_platform_pcmops_open(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai;
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struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
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struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
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struct lpass_variant *v = drvdata->variant;
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int ret, dma_ch, dir = substream->stream;
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struct lpass_pcm_data *data;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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data->i2s_port = cpu_dai->driver->id;
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runtime->private_data = data;
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if (v->alloc_dma_channel)
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dma_ch = v->alloc_dma_channel(drvdata, dir);
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else
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dma_ch = 0;
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if (dma_ch < 0) {
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kfree(data);
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return dma_ch;
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}
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drvdata->substream[dma_ch] = substream;
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ret = regmap_write(drvdata->lpaif_map,
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LPAIF_DMACTL_REG(v, dma_ch, dir), 0);
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if (ret) {
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dev_err(soc_runtime->dev,
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"error writing to rdmactl reg: %d\n", ret);
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return ret;
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}
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data->dma_ch = dma_ch;
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snd_soc_set_runtime_hwparams(substream, &lpass_platform_pcm_hardware);
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runtime->dma_bytes = lpass_platform_pcm_hardware.buffer_bytes_max;
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ret = snd_pcm_hw_constraint_integer(runtime,
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SNDRV_PCM_HW_PARAM_PERIODS);
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if (ret < 0) {
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kfree(data);
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dev_err(soc_runtime->dev, "setting constraints failed: %d\n",
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ret);
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return -EINVAL;
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}
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snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
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return 0;
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}
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static int lpass_platform_pcmops_close(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
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struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
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struct lpass_variant *v = drvdata->variant;
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struct lpass_pcm_data *data;
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data = runtime->private_data;
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drvdata->substream[data->dma_ch] = NULL;
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if (v->free_dma_channel)
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v->free_dma_channel(drvdata, data->dma_ch);
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kfree(data);
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return 0;
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}
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static int lpass_platform_pcmops_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
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struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
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struct snd_pcm_runtime *rt = substream->runtime;
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struct lpass_pcm_data *pcm_data = rt->private_data;
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struct lpass_variant *v = drvdata->variant;
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snd_pcm_format_t format = params_format(params);
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unsigned int channels = params_channels(params);
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unsigned int regval;
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int ch, dir = substream->stream;
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int bitwidth;
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int ret, dma_port = pcm_data->i2s_port + v->dmactl_audif_start;
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ch = pcm_data->dma_ch;
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bitwidth = snd_pcm_format_width(format);
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if (bitwidth < 0) {
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dev_err(soc_runtime->dev, "invalid bit width given: %d\n",
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bitwidth);
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return bitwidth;
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}
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regval = LPAIF_DMACTL_BURSTEN_INCR4 |
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LPAIF_DMACTL_AUDINTF(dma_port) |
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LPAIF_DMACTL_FIFOWM_8;
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switch (bitwidth) {
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case 16:
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switch (channels) {
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case 1:
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case 2:
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regval |= LPAIF_DMACTL_WPSCNT_ONE;
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break;
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case 4:
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regval |= LPAIF_DMACTL_WPSCNT_TWO;
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break;
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case 6:
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regval |= LPAIF_DMACTL_WPSCNT_THREE;
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break;
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case 8:
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regval |= LPAIF_DMACTL_WPSCNT_FOUR;
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break;
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default:
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dev_err(soc_runtime->dev,
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"invalid PCM config given: bw=%d, ch=%u\n",
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bitwidth, channels);
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return -EINVAL;
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}
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break;
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case 24:
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case 32:
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switch (channels) {
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case 1:
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regval |= LPAIF_DMACTL_WPSCNT_ONE;
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break;
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case 2:
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regval |= LPAIF_DMACTL_WPSCNT_TWO;
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break;
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case 4:
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regval |= LPAIF_DMACTL_WPSCNT_FOUR;
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break;
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case 6:
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regval |= LPAIF_DMACTL_WPSCNT_SIX;
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break;
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case 8:
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regval |= LPAIF_DMACTL_WPSCNT_EIGHT;
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break;
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default:
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dev_err(soc_runtime->dev,
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"invalid PCM config given: bw=%d, ch=%u\n",
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bitwidth, channels);
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return -EINVAL;
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}
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break;
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default:
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dev_err(soc_runtime->dev, "invalid PCM config given: bw=%d, ch=%u\n",
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bitwidth, channels);
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return -EINVAL;
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}
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ret = regmap_write(drvdata->lpaif_map,
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LPAIF_DMACTL_REG(v, ch, dir), regval);
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if (ret) {
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dev_err(soc_runtime->dev, "error writing to rdmactl reg: %d\n",
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ret);
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return ret;
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}
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return 0;
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}
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static int lpass_platform_pcmops_hw_free(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
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struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
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struct snd_pcm_runtime *rt = substream->runtime;
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struct lpass_pcm_data *pcm_data = rt->private_data;
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struct lpass_variant *v = drvdata->variant;
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unsigned int reg;
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int ret;
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reg = LPAIF_DMACTL_REG(v, pcm_data->dma_ch, substream->stream);
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ret = regmap_write(drvdata->lpaif_map, reg, 0);
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if (ret)
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dev_err(soc_runtime->dev, "error writing to rdmactl reg: %d\n",
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ret);
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return ret;
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}
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static int lpass_platform_pcmops_prepare(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
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struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
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struct snd_pcm_runtime *rt = substream->runtime;
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struct lpass_pcm_data *pcm_data = rt->private_data;
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struct lpass_variant *v = drvdata->variant;
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int ret, ch, dir = substream->stream;
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ch = pcm_data->dma_ch;
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ret = regmap_write(drvdata->lpaif_map,
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LPAIF_DMABASE_REG(v, ch, dir),
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runtime->dma_addr);
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if (ret) {
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dev_err(soc_runtime->dev, "error writing to rdmabase reg: %d\n",
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ret);
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return ret;
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}
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ret = regmap_write(drvdata->lpaif_map,
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LPAIF_DMABUFF_REG(v, ch, dir),
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(snd_pcm_lib_buffer_bytes(substream) >> 2) - 1);
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if (ret) {
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dev_err(soc_runtime->dev, "error writing to rdmabuff reg: %d\n",
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ret);
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return ret;
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}
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ret = regmap_write(drvdata->lpaif_map,
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LPAIF_DMAPER_REG(v, ch, dir),
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(snd_pcm_lib_period_bytes(substream) >> 2) - 1);
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if (ret) {
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dev_err(soc_runtime->dev, "error writing to rdmaper reg: %d\n",
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ret);
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return ret;
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}
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ret = regmap_update_bits(drvdata->lpaif_map,
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LPAIF_DMACTL_REG(v, ch, dir),
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LPAIF_DMACTL_ENABLE_MASK, LPAIF_DMACTL_ENABLE_ON);
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if (ret) {
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dev_err(soc_runtime->dev, "error writing to rdmactl reg: %d\n",
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ret);
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return ret;
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}
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return 0;
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}
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static int lpass_platform_pcmops_trigger(struct snd_pcm_substream *substream,
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int cmd)
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{
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
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struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
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struct snd_pcm_runtime *rt = substream->runtime;
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struct lpass_pcm_data *pcm_data = rt->private_data;
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struct lpass_variant *v = drvdata->variant;
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int ret, ch, dir = substream->stream;
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ch = pcm_data->dma_ch;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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/* clear status before enabling interrupts */
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ret = regmap_write(drvdata->lpaif_map,
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LPAIF_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST),
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LPAIF_IRQ_ALL(ch));
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if (ret) {
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dev_err(soc_runtime->dev,
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"error writing to irqclear reg: %d\n", ret);
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return ret;
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}
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ret = regmap_update_bits(drvdata->lpaif_map,
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LPAIF_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST),
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LPAIF_IRQ_ALL(ch),
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LPAIF_IRQ_ALL(ch));
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if (ret) {
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dev_err(soc_runtime->dev,
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"error writing to irqen reg: %d\n", ret);
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return ret;
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}
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ret = regmap_update_bits(drvdata->lpaif_map,
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LPAIF_DMACTL_REG(v, ch, dir),
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LPAIF_DMACTL_ENABLE_MASK,
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LPAIF_DMACTL_ENABLE_ON);
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if (ret) {
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dev_err(soc_runtime->dev,
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"error writing to rdmactl reg: %d\n", ret);
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return ret;
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}
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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||
|
|
ret = regmap_update_bits(drvdata->lpaif_map,
|
||
|
|
LPAIF_DMACTL_REG(v, ch, dir),
|
||
|
|
LPAIF_DMACTL_ENABLE_MASK,
|
||
|
|
LPAIF_DMACTL_ENABLE_OFF);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error writing to rdmactl reg: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = regmap_update_bits(drvdata->lpaif_map,
|
||
|
|
LPAIF_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST),
|
||
|
|
LPAIF_IRQ_ALL(ch), 0);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error writing to irqen reg: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static snd_pcm_uframes_t lpass_platform_pcmops_pointer(
|
||
|
|
struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
|
||
|
|
struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
|
||
|
|
struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
|
||
|
|
struct snd_pcm_runtime *rt = substream->runtime;
|
||
|
|
struct lpass_pcm_data *pcm_data = rt->private_data;
|
||
|
|
struct lpass_variant *v = drvdata->variant;
|
||
|
|
unsigned int base_addr, curr_addr;
|
||
|
|
int ret, ch, dir = substream->stream;
|
||
|
|
|
||
|
|
ch = pcm_data->dma_ch;
|
||
|
|
|
||
|
|
ret = regmap_read(drvdata->lpaif_map,
|
||
|
|
LPAIF_DMABASE_REG(v, ch, dir), &base_addr);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error reading from rdmabase reg: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = regmap_read(drvdata->lpaif_map,
|
||
|
|
LPAIF_DMACURR_REG(v, ch, dir), &curr_addr);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error reading from rdmacurr reg: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
return bytes_to_frames(substream->runtime, curr_addr - base_addr);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int lpass_platform_pcmops_mmap(struct snd_pcm_substream *substream,
|
||
|
|
struct vm_area_struct *vma)
|
||
|
|
{
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
|
||
|
|
return dma_mmap_coherent(substream->pcm->card->dev, vma,
|
||
|
|
runtime->dma_area, runtime->dma_addr,
|
||
|
|
runtime->dma_bytes);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_pcm_ops lpass_platform_pcm_ops = {
|
||
|
|
.open = lpass_platform_pcmops_open,
|
||
|
|
.close = lpass_platform_pcmops_close,
|
||
|
|
.ioctl = snd_pcm_lib_ioctl,
|
||
|
|
.hw_params = lpass_platform_pcmops_hw_params,
|
||
|
|
.hw_free = lpass_platform_pcmops_hw_free,
|
||
|
|
.prepare = lpass_platform_pcmops_prepare,
|
||
|
|
.trigger = lpass_platform_pcmops_trigger,
|
||
|
|
.pointer = lpass_platform_pcmops_pointer,
|
||
|
|
.mmap = lpass_platform_pcmops_mmap,
|
||
|
|
};
|
||
|
|
|
||
|
|
static irqreturn_t lpass_dma_interrupt_handler(
|
||
|
|
struct snd_pcm_substream *substream,
|
||
|
|
struct lpass_data *drvdata,
|
||
|
|
int chan, u32 interrupts)
|
||
|
|
{
|
||
|
|
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
|
||
|
|
struct lpass_variant *v = drvdata->variant;
|
||
|
|
irqreturn_t ret = IRQ_NONE;
|
||
|
|
int rv;
|
||
|
|
|
||
|
|
if (interrupts & LPAIF_IRQ_PER(chan)) {
|
||
|
|
rv = regmap_write(drvdata->lpaif_map,
|
||
|
|
LPAIF_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST),
|
||
|
|
LPAIF_IRQ_PER(chan));
|
||
|
|
if (rv) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error writing to irqclear reg: %d\n", rv);
|
||
|
|
return IRQ_NONE;
|
||
|
|
}
|
||
|
|
snd_pcm_period_elapsed(substream);
|
||
|
|
ret = IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (interrupts & LPAIF_IRQ_XRUN(chan)) {
|
||
|
|
rv = regmap_write(drvdata->lpaif_map,
|
||
|
|
LPAIF_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST),
|
||
|
|
LPAIF_IRQ_XRUN(chan));
|
||
|
|
if (rv) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error writing to irqclear reg: %d\n", rv);
|
||
|
|
return IRQ_NONE;
|
||
|
|
}
|
||
|
|
dev_warn(soc_runtime->dev, "xrun warning\n");
|
||
|
|
snd_pcm_stop_xrun(substream);
|
||
|
|
ret = IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (interrupts & LPAIF_IRQ_ERR(chan)) {
|
||
|
|
rv = regmap_write(drvdata->lpaif_map,
|
||
|
|
LPAIF_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST),
|
||
|
|
LPAIF_IRQ_ERR(chan));
|
||
|
|
if (rv) {
|
||
|
|
dev_err(soc_runtime->dev,
|
||
|
|
"error writing to irqclear reg: %d\n", rv);
|
||
|
|
return IRQ_NONE;
|
||
|
|
}
|
||
|
|
dev_err(soc_runtime->dev, "bus access error\n");
|
||
|
|
snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED);
|
||
|
|
ret = IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static irqreturn_t lpass_platform_lpaif_irq(int irq, void *data)
|
||
|
|
{
|
||
|
|
struct lpass_data *drvdata = data;
|
||
|
|
struct lpass_variant *v = drvdata->variant;
|
||
|
|
unsigned int irqs;
|
||
|
|
int rv, chan;
|
||
|
|
|
||
|
|
rv = regmap_read(drvdata->lpaif_map,
|
||
|
|
LPAIF_IRQSTAT_REG(v, LPAIF_IRQ_PORT_HOST), &irqs);
|
||
|
|
if (rv) {
|
||
|
|
pr_err("error reading from irqstat reg: %d\n", rv);
|
||
|
|
return IRQ_NONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Handle per channel interrupts */
|
||
|
|
for (chan = 0; chan < LPASS_MAX_DMA_CHANNELS; chan++) {
|
||
|
|
if (irqs & LPAIF_IRQ_ALL(chan) && drvdata->substream[chan]) {
|
||
|
|
rv = lpass_dma_interrupt_handler(
|
||
|
|
drvdata->substream[chan],
|
||
|
|
drvdata, chan, irqs);
|
||
|
|
if (rv != IRQ_HANDLED)
|
||
|
|
return rv;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime)
|
||
|
|
{
|
||
|
|
struct snd_pcm *pcm = soc_runtime->pcm;
|
||
|
|
struct snd_pcm_substream *psubstream, *csubstream;
|
||
|
|
struct snd_soc_component *component = snd_soc_rtdcom_lookup(soc_runtime, DRV_NAME);
|
||
|
|
int ret = -EINVAL;
|
||
|
|
size_t size = lpass_platform_pcm_hardware.buffer_bytes_max;
|
||
|
|
|
||
|
|
psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
|
||
|
|
if (psubstream) {
|
||
|
|
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
|
||
|
|
component->dev,
|
||
|
|
size, &psubstream->dma_buffer);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(soc_runtime->dev, "Cannot allocate buffer(s)\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
|
||
|
|
if (csubstream) {
|
||
|
|
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
|
||
|
|
component->dev,
|
||
|
|
size, &csubstream->dma_buffer);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(soc_runtime->dev, "Cannot allocate buffer(s)\n");
|
||
|
|
if (psubstream)
|
||
|
|
snd_dma_free_pages(&psubstream->dma_buffer);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lpass_platform_pcm_free(struct snd_pcm *pcm)
|
||
|
|
{
|
||
|
|
struct snd_pcm_substream *substream;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) {
|
||
|
|
substream = pcm->streams[i].substream;
|
||
|
|
if (substream) {
|
||
|
|
snd_dma_free_pages(&substream->dma_buffer);
|
||
|
|
substream->dma_buffer.area = NULL;
|
||
|
|
substream->dma_buffer.addr = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_soc_component_driver lpass_component_driver = {
|
||
|
|
.name = DRV_NAME,
|
||
|
|
.pcm_new = lpass_platform_pcm_new,
|
||
|
|
.pcm_free = lpass_platform_pcm_free,
|
||
|
|
.ops = &lpass_platform_pcm_ops,
|
||
|
|
};
|
||
|
|
|
||
|
|
int asoc_qcom_lpass_platform_register(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct lpass_data *drvdata = platform_get_drvdata(pdev);
|
||
|
|
struct lpass_variant *v = drvdata->variant;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
drvdata->lpaif_irq = platform_get_irq_byname(pdev, "lpass-irq-lpaif");
|
||
|
|
if (drvdata->lpaif_irq < 0) {
|
||
|
|
dev_err(&pdev->dev, "error getting irq handle: %d\n",
|
||
|
|
drvdata->lpaif_irq);
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ensure audio hardware is disabled */
|
||
|
|
ret = regmap_write(drvdata->lpaif_map,
|
||
|
|
LPAIF_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST), 0);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&pdev->dev, "error writing to irqen reg: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = devm_request_irq(&pdev->dev, drvdata->lpaif_irq,
|
||
|
|
lpass_platform_lpaif_irq, IRQF_TRIGGER_RISING,
|
||
|
|
"lpass-irq-lpaif", drvdata);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&pdev->dev, "irq request failed: %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
return devm_snd_soc_register_component(&pdev->dev,
|
||
|
|
&lpass_component_driver, NULL, 0);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(asoc_qcom_lpass_platform_register);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("QTi LPASS Platform Driver");
|
||
|
|
MODULE_LICENSE("GPL v2");
|