+++ /dev/null
-/*
- * Copyright (C) 2010-2014 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_i2c.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/i2c.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <sound/initval.h>
-#include <sound/pcm_params.h>
-
-#include "fsl_esai.h"
-#include "fsl_asrc.h"
-
-#define CODEC_CLK_EXTER_OSC 1
-#define CODEC_CLK_ESAI_HCKT 2
-
-struct imx_priv {
- int hw;
- int fe_output_rate;
- int fe_output_width;
- unsigned int mclk_freq;
- unsigned int codec_mclk;
- struct platform_device *pdev;
-};
-
-static struct imx_priv card_priv;
-
-static int imx_cs42888_startup(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct imx_priv *priv = &card_priv;
-
- if (!cpu_dai->active)
- priv->hw = 0;
- return 0;
-}
-
-static void imx_cs42888_shutdown(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct imx_priv *priv = &card_priv;
-
- if (!cpu_dai->active)
- priv->hw = 0;
-}
-
-static const struct {
- int rate;
- int ratio1;
- int ratio2;
-} sr_vals[] = {
- { 32000, 5, 3 },
- { 48000, 5, 3 },
- { 64000, 2, 1 },
- { 96000, 2, 1 },
- { 128000, 2, 1 },
- { 44100, 5, 3 },
- { 88200, 2, 1 },
- { 176400, 0, 0 },
- { 192000, 0, 0 },
-};
-
-static int imx_cs42888_surround_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct imx_priv *priv = &card_priv;
- unsigned int rate = params_rate(params);
- unsigned int lrclk_ratio = 0, i;
- u32 dai_format = 0;
-
- if (priv->hw)
- return 0;
-
- priv->hw = 1;
-
- if (priv->codec_mclk & CODEC_CLK_ESAI_HCKT) {
- for (i = 0; i < ARRAY_SIZE(sr_vals); i++) {
- if (sr_vals[i].rate == rate) {
- lrclk_ratio = sr_vals[i].ratio1;
- break;
- }
- }
- if (i == ARRAY_SIZE(sr_vals)) {
- dev_err(&priv->pdev->dev, "Unsupported rate %dHz\n", rate);
- return -EINVAL;
- }
-
- dai_format = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBS_CFS;
-
- /* set the ESAI system clock as output */
- snd_soc_dai_set_sysclk(cpu_dai, ESAI_CLK_EXTAL_DIV,
- priv->mclk_freq, SND_SOC_CLOCK_OUT);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PM, 2);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PM, 2);
- /* set codec Master clock */
- snd_soc_dai_set_sysclk(codec_dai, 0, priv->mclk_freq,\
- SND_SOC_CLOCK_IN);
- } else if (priv->codec_mclk & CODEC_CLK_EXTER_OSC) {
- for (i = 0; i < ARRAY_SIZE(sr_vals); i++) {
- if (sr_vals[i].rate == rate) {
- lrclk_ratio = sr_vals[i].ratio2;
- break;
- }
- }
- if (i == ARRAY_SIZE(sr_vals)) {
- dev_err(&priv->pdev->dev, "Unsupported rate %dHz\n", rate);
- return -EINVAL;
- }
-
- dai_format = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBS_CFS;
-
- snd_soc_dai_set_sysclk(cpu_dai, ESAI_CLK_EXTAL,
- priv->mclk_freq, SND_SOC_CLOCK_OUT);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PM, 0);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PM, 0);
- snd_soc_dai_set_sysclk(codec_dai, 0, priv->mclk_freq,\
- SND_SOC_CLOCK_IN);
- }
-
- /* set cpu DAI configuration */
- snd_soc_dai_set_fmt(cpu_dai, dai_format);
- /* set i.MX active slot mask */
- snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 32);
- /* set the ratio */
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PSR, 1);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_FP, lrclk_ratio);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PSR, 1);
- snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_FP, lrclk_ratio);
-
- /* set codec DAI configuration */
- snd_soc_dai_set_fmt(codec_dai, dai_format);
- return 0;
-}
-
-static struct snd_soc_ops imx_cs42888_surround_ops = {
- .startup = imx_cs42888_startup,
- .shutdown = imx_cs42888_shutdown,
- .hw_params = imx_cs42888_surround_hw_params,
-};
-
-static const struct snd_soc_dapm_widget imx_cs42888_dapm_widgets[] = {
- SND_SOC_DAPM_LINE("Line Out Jack", NULL),
- SND_SOC_DAPM_LINE("Line In Jack", NULL),
-};
-
-static const struct snd_soc_dapm_route audio_map[] = {
- /* Line out jack */
- {"Line Out Jack", NULL, "AOUT1L"},
- {"Line Out Jack", NULL, "AOUT1R"},
- {"Line Out Jack", NULL, "AOUT2L"},
- {"Line Out Jack", NULL, "AOUT2R"},
- {"Line Out Jack", NULL, "AOUT3L"},
- {"Line Out Jack", NULL, "AOUT3R"},
- {"Line Out Jack", NULL, "AOUT4L"},
- {"Line Out Jack", NULL, "AOUT4R"},
- {"AIN1L", NULL, "Line In Jack"},
- {"AIN1R", NULL, "Line In Jack"},
- {"AIN2L", NULL, "Line In Jack"},
- {"AIN2R", NULL, "Line In Jack"},
- {"esai-Playback", NULL, "asrc-Playback"},
- {"codec-Playback", NULL, "esai-Playback"},/*Playback is the codec dai*/
-};
-
-static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
- struct snd_pcm_hw_params *params) {
-
- struct imx_priv *priv = &card_priv;
-
- hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = priv->fe_output_rate;
- hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = priv->fe_output_rate;
- snd_mask_none(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT));
- if (priv->fe_output_width == 16)
- snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
- SNDRV_PCM_FORMAT_S16_LE);
- else
- snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
- SNDRV_PCM_FORMAT_S24_LE);
- return 0;
-}
-
-static struct snd_soc_dai_link imx_cs42888_dai[] = {
- {
- .name = "HiFi",
- .stream_name = "HiFi",
- .codec_dai_name = "CS42888",
- .ops = &imx_cs42888_surround_ops,
- },
- {
- .name = "HiFi-ASRC-FE",
- .stream_name = "HiFi-ASRC-FE",
- .codec_name = "snd-soc-dummy",
- .codec_dai_name = "snd-soc-dummy-dai",
- .dynamic = 1,
- },
- {
- .name = "HiFi-ASRC-BE",
- .stream_name = "HiFi-ASRC-BE",
- .codec_dai_name = "CS42888",
- .platform_name = "snd-soc-dummy",
- .no_pcm = 1,
- .ops = &imx_cs42888_surround_ops,
- .be_hw_params_fixup = be_hw_params_fixup,
- },
-};
-
-static struct snd_soc_card snd_soc_card_imx_cs42888 = {
- .name = "cs42888-audio",
- .dai_link = imx_cs42888_dai,
- .dapm_widgets = imx_cs42888_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(imx_cs42888_dapm_widgets),
- .dapm_routes = audio_map,
- .num_dapm_routes = ARRAY_SIZE(audio_map),
-};
-
-/*
- * This function will register the snd_soc_pcm_link drivers.
- */
-static int imx_cs42888_probe(struct platform_device *pdev)
-{
- struct device_node *esai_np, *codec_np;
- struct device_node *asrc_np;
- struct platform_device *esai_pdev;
- struct platform_device *asrc_pdev = NULL;
- struct i2c_client *codec_dev;
- struct imx_priv *priv = &card_priv;
- struct clk *codec_clk = NULL;
- const char *mclk_name;
- int ret;
-
- priv->pdev = pdev;
-
- esai_np = of_parse_phandle(pdev->dev.of_node, "esai-controller", 0);
- codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
- if (!esai_np || !codec_np) {
- dev_err(&pdev->dev, "phandle missing or invalid\n");
- ret = -EINVAL;
- goto fail;
- }
-
- asrc_np = of_parse_phandle(pdev->dev.of_node, "asrc-controller", 0);
- if (asrc_np) {
- asrc_pdev = of_find_device_by_node(asrc_np);
- if (asrc_pdev) {
- struct fsl_asrc_p2p *asrc_p2p;
- asrc_p2p = platform_get_drvdata(asrc_pdev);
- asrc_p2p->per_dev = ESAI;
- priv->fe_output_rate = asrc_p2p->output_rate;
- priv->fe_output_width = asrc_p2p->output_width;
- }
- }
-
- esai_pdev = of_find_device_by_node(esai_np);
- if (!esai_pdev) {
- dev_err(&pdev->dev, "failed to find ESAI platform device\n");
- ret = -EINVAL;
- goto fail;
- }
- codec_dev = of_find_i2c_device_by_node(codec_np);
- if (!codec_dev) {
- dev_err(&pdev->dev, "failed to find codec platform device\n");
- ret = -EINVAL;
- goto fail;
- }
-
- /*if there is no asrc controller, we only enable one device*/
- if (!asrc_pdev) {
- imx_cs42888_dai[0].codec_of_node = codec_np;
- imx_cs42888_dai[0].cpu_dai_name = dev_name(&esai_pdev->dev);
- imx_cs42888_dai[0].platform_of_node = esai_np;
- snd_soc_card_imx_cs42888.num_links = 1;
- } else {
- imx_cs42888_dai[0].codec_of_node = codec_np;
- imx_cs42888_dai[0].cpu_dai_name = dev_name(&esai_pdev->dev);
- imx_cs42888_dai[0].platform_of_node = esai_np;
- imx_cs42888_dai[1].cpu_dai_name = dev_name(&asrc_pdev->dev);
- imx_cs42888_dai[1].platform_name = "imx-pcm-asrc";
- imx_cs42888_dai[2].codec_of_node = codec_np;
- imx_cs42888_dai[2].cpu_dai_name = dev_name(&esai_pdev->dev);
- snd_soc_card_imx_cs42888.num_links = 3;
- }
-
- codec_clk = devm_clk_get(&codec_dev->dev, NULL);
- if (IS_ERR(codec_clk)) {
- ret = PTR_ERR(codec_clk);
- dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
- goto fail;
- }
- priv->mclk_freq = clk_get_rate(codec_clk);
-
- ret = of_property_read_string(codec_np, "clock-names", &mclk_name);
- if (ret) {
- dev_err(&pdev->dev, "%s: failed to get mclk source\n", __func__);
- goto fail;
- }
- if (!strcmp(mclk_name, "codec_osc"))
- priv->codec_mclk = CODEC_CLK_EXTER_OSC;
- else if (!strcmp(mclk_name, "esai"))
- priv->codec_mclk = CODEC_CLK_ESAI_HCKT;
- else {
- dev_err(&pdev->dev, "mclk source is not correct %s\n", mclk_name);
- goto fail;
- }
-
- snd_soc_card_imx_cs42888.dev = &pdev->dev;
-
- ret = snd_soc_register_card(&snd_soc_card_imx_cs42888);
- if (ret)
- dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
-fail:
- if (esai_np)
- of_node_put(esai_np);
- if (codec_np)
- of_node_put(codec_np);
- return ret;
-}
-
-static int imx_cs42888_remove(struct platform_device *pdev)
-{
- snd_soc_unregister_card(&snd_soc_card_imx_cs42888);
- return 0;
-}
-
-static const struct of_device_id imx_cs42888_dt_ids[] = {
- { .compatible = "fsl,imx-audio-cs42888", },
- { /* sentinel */ }
-};
-
-static struct platform_driver imx_cs42888_driver = {
- .probe = imx_cs42888_probe,
- .remove = imx_cs42888_remove,
- .driver = {
- .name = "imx-cs42888",
- .owner = THIS_MODULE,
- .of_match_table = imx_cs42888_dt_ids,
- },
-};
-module_platform_driver(imx_cs42888_driver);
-
-MODULE_AUTHOR("Freescale Semiconductor, Inc.");
-MODULE_DESCRIPTION("ALSA SoC cs42888 Machine Layer Driver");
-MODULE_ALIAS("platform:imx-cs42888");
-MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / blobdiff