LXR linux/sound/soc/qcom/lpass-ipq806x.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
   4 *
   5 * lpass-ipq806x.c -- ALSA SoC CPU DAI driver for QTi LPASS
   6 * Splited out the IPQ8064 soc specific from lpass-cpu.c
   7 */
   8
   9#include <linux/clk.h>
  10#include <linux/device.h>
  11#include <linux/err.h>
  12#include <linux/kernel.h>
  13#include <linux/module.h>
  14#include <linux/of.h>
  15#include <linux/platform_device.h>
  16#include <sound/pcm.h>
  17#include <sound/soc.h>
  18#include <sound/soc-dai.h>
  19
  20#include "lpass-lpaif-reg.h"
  21#include "lpass.h"
  22
  23enum lpaif_i2s_ports {
  24        IPQ806X_LPAIF_I2S_PORT_CODEC_SPK,
  25        IPQ806X_LPAIF_I2S_PORT_CODEC_MIC,
  26        IPQ806X_LPAIF_I2S_PORT_SEC_SPK,
  27        IPQ806X_LPAIF_I2S_PORT_SEC_MIC,
  28        IPQ806X_LPAIF_I2S_PORT_MI2S,
  29};
  30
  31enum lpaif_dma_channels {
  32        IPQ806X_LPAIF_RDMA_CHAN_MI2S,
  33        IPQ806X_LPAIF_RDMA_CHAN_PCM0,
  34        IPQ806X_LPAIF_RDMA_CHAN_PCM1,
  35};
  36
  37static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = {
  38        .id     = IPQ806X_LPAIF_I2S_PORT_MI2S,
  39        .playback = {
  40                .stream_name    = "lpass-cpu-playback",
  41                .formats        = SNDRV_PCM_FMTBIT_S16 |
  42                                        SNDRV_PCM_FMTBIT_S24 |
  43                                        SNDRV_PCM_FMTBIT_S32,
  44                .rates          = SNDRV_PCM_RATE_8000 |
  45                                        SNDRV_PCM_RATE_16000 |
  46                                        SNDRV_PCM_RATE_32000 |
  47                                        SNDRV_PCM_RATE_48000 |
  48                                        SNDRV_PCM_RATE_96000,
  49                .rate_min       = 8000,
  50                .rate_max       = 96000,
  51                .channels_min   = 1,
  52                .channels_max   = 8,
  53        },
  54        .probe  = &asoc_qcom_lpass_cpu_dai_probe,
  55        .ops    = &asoc_qcom_lpass_cpu_dai_ops,
  56};
  57
  58static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir)
  59{
  60        if (dir == SNDRV_PCM_STREAM_PLAYBACK)
  61                return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
  62        else    /* Capture currently not implemented */
  63                return -EINVAL;
  64}
  65
  66static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
  67{
  68        return 0;
  69}
  70
  71static struct lpass_variant ipq806x_data = {
  72        .i2sctrl_reg_base       = 0x0010,
  73        .i2sctrl_reg_stride     = 0x04,
  74        .i2s_ports              = 5,
  75        .irq_reg_base           = 0x3000,
  76        .irq_reg_stride         = 0x1000,
  77        .irq_ports              = 3,
  78        .rdma_reg_base          = 0x6000,
  79        .rdma_reg_stride        = 0x1000,
  80        .rdma_channels          = 4,
  81        .wrdma_reg_base         = 0xB000,
  82        .wrdma_reg_stride       = 0x1000,
  83        .wrdma_channel_start    = 5,
  84        .wrdma_channels         = 4,
  85        .dai_driver             = &ipq806x_lpass_cpu_dai_driver,
  86        .num_dai                = 1,
  87        .dai_osr_clk_names      = (const char *[]) {
  88                                "mi2s-osr-clk",
  89                                },
  90        .dai_bit_clk_names      = (const char *[]) {
  91                                "mi2s-bit-clk",
  92                                },
  93        .alloc_dma_channel      = ipq806x_lpass_alloc_dma_channel,
  94        .free_dma_channel       = ipq806x_lpass_free_dma_channel,
  95};
  96
  97static const struct of_device_id ipq806x_lpass_cpu_device_id[] = {
  98        { .compatible = "qcom,lpass-cpu", .data = &ipq806x_data },
  99        {}
 100};
 101MODULE_DEVICE_TABLE(of, ipq806x_lpass_cpu_device_id);
 102
 103static struct platform_driver ipq806x_lpass_cpu_platform_driver = {
 104        .driver = {
 105                .name           = "lpass-cpu",
 106                .of_match_table = of_match_ptr(ipq806x_lpass_cpu_device_id),
 107        },
 108        .probe  = asoc_qcom_lpass_cpu_platform_probe,
 109        .remove = asoc_qcom_lpass_cpu_platform_remove,
 110};
 111module_platform_driver(ipq806x_lpass_cpu_platform_driver);
 112
 113MODULE_DESCRIPTION("QTi LPASS CPU Driver");
 114MODULE_LICENSE("GPL v2");
 115