ASoC: Move WM8580 to normal I2C device probe
Refactor the WM8580 device registration to probe via standard I2C device registration, registering the DAIs once the device has probed via I2C. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown
parent
2a9f0ba7a9
commit
6f7cb44ba1
@ -1,7 +1,7 @@
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/*
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* wm8580.c -- WM8580 ALSA Soc Audio driver
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*
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* Copyright 2008 Wolfson Microelectronics PLC.
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* Copyright 2008, 2009 Wolfson Microelectronics PLC.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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@ -35,17 +35,6 @@
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#include "wm8580.h"
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struct pll_state {
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unsigned int in;
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unsigned int out;
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};
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/* codec private data */
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struct wm8580_priv {
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struct pll_state a;
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struct pll_state b;
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};
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/* WM8580 register space */
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#define WM8580_PLLA1 0x00
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#define WM8580_PLLA2 0x01
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@ -100,6 +89,8 @@ struct wm8580_priv {
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#define WM8580_READBACK 0x34
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#define WM8580_RESET 0x35
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#define WM8580_MAX_REGISTER 0x35
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/* PLLB4 (register 7h) */
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#define WM8580_PLLB4_MCLKOUTSRC_MASK 0x60
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#define WM8580_PLLB4_MCLKOUTSRC_PLLA 0x20
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@ -191,6 +182,20 @@ static const u16 wm8580_reg[] = {
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0x0000, 0x0000 /*R53*/
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};
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struct pll_state {
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unsigned int in;
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unsigned int out;
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};
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/* codec private data */
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struct wm8580_priv {
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struct snd_soc_codec codec;
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u16 reg_cache[WM8580_MAX_REGISTER + 1];
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struct pll_state a;
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struct pll_state b;
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};
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/*
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* read wm8580 register cache
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*/
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@ -755,8 +760,22 @@ static int wm8580_set_bias_level(struct snd_soc_codec *codec,
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switch (level) {
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case SND_SOC_BIAS_ON:
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case SND_SOC_BIAS_PREPARE:
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case SND_SOC_BIAS_STANDBY:
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break;
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case SND_SOC_BIAS_STANDBY:
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if (codec->bias_level == SND_SOC_BIAS_OFF) {
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/* Power up and get individual control of the DACs */
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reg = wm8580_read(codec, WM8580_PWRDN1);
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reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
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wm8580_write(codec, WM8580_PWRDN1, reg);
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/* Make VMID high impedence */
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reg = wm8580_read(codec, WM8580_ADC_CONTROL1);
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reg &= ~0x100;
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wm8580_write(codec, WM8580_ADC_CONTROL1, reg);
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}
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break;
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case SND_SOC_BIAS_OFF:
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reg = wm8580_read(codec, WM8580_PWRDN1);
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wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
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@ -812,100 +831,163 @@ struct snd_soc_dai wm8580_dai[] = {
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};
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EXPORT_SYMBOL_GPL(wm8580_dai);
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/*
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* initialise the WM8580 driver
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* register the mixer and dsp interfaces with the kernel
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*/
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static int wm8580_init(struct snd_soc_device *socdev)
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static struct snd_soc_codec *wm8580_codec;
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static int wm8580_probe(struct platform_device *pdev)
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{
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struct snd_soc_codec *codec = socdev->card->codec;
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec;
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int ret = 0;
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codec->name = "WM8580";
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codec->owner = THIS_MODULE;
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codec->read = wm8580_read_reg_cache;
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codec->write = wm8580_write;
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codec->set_bias_level = wm8580_set_bias_level;
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codec->dai = wm8580_dai;
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codec->num_dai = ARRAY_SIZE(wm8580_dai);
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codec->reg_cache_size = ARRAY_SIZE(wm8580_reg);
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codec->reg_cache = kmemdup(wm8580_reg, sizeof(wm8580_reg),
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GFP_KERNEL);
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if (wm8580_codec == NULL) {
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dev_err(&pdev->dev, "Codec device not registered\n");
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return -ENODEV;
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}
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if (codec->reg_cache == NULL)
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return -ENOMEM;
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/* Get the codec into a known state */
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wm8580_write(codec, WM8580_RESET, 0);
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/* Power up and get individual control of the DACs */
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wm8580_write(codec, WM8580_PWRDN1, wm8580_read(codec, WM8580_PWRDN1) &
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~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD));
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/* Make VMID high impedence */
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wm8580_write(codec, WM8580_ADC_CONTROL1,
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wm8580_read(codec, WM8580_ADC_CONTROL1) & ~0x100);
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socdev->card->codec = wm8580_codec;
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codec = wm8580_codec;
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/* register pcms */
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1,
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SNDRV_DEFAULT_STR1);
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0) {
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printk(KERN_ERR "wm8580: failed to create pcms\n");
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dev_err(codec->dev, "failed to create pcms: %d\n", ret);
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goto pcm_err;
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}
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snd_soc_add_controls(codec, wm8580_snd_controls,
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ARRAY_SIZE(wm8580_snd_controls));
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ARRAY_SIZE(wm8580_snd_controls));
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wm8580_add_widgets(codec);
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ret = snd_soc_init_card(socdev);
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if (ret < 0) {
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printk(KERN_ERR "wm8580: failed to register card\n");
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dev_err(codec->dev, "failed to register card: %d\n", ret);
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goto card_err;
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}
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return ret;
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card_err:
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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pcm_err:
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kfree(codec->reg_cache);
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return ret;
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}
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/* If the i2c layer weren't so broken, we could pass this kind of data
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around */
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static struct snd_soc_device *wm8580_socdev;
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/* power down chip */
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static int wm8580_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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return 0;
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}
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struct snd_soc_codec_device soc_codec_dev_wm8580 = {
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.probe = wm8580_probe,
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.remove = wm8580_remove,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
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static int wm8580_register(struct wm8580_priv *wm8580)
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{
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int ret, i;
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struct snd_soc_codec *codec = &wm8580->codec;
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if (wm8580_codec) {
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dev_err(codec->dev, "Another WM8580 is registered\n");
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ret = -EINVAL;
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goto err;
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}
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mutex_init(&codec->mutex);
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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codec->private_data = wm8580;
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codec->name = "WM8580";
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codec->owner = THIS_MODULE;
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codec->read = wm8580_read_reg_cache;
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codec->write = wm8580_write;
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codec->bias_level = SND_SOC_BIAS_OFF;
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codec->set_bias_level = wm8580_set_bias_level;
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codec->dai = wm8580_dai;
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codec->num_dai = ARRAY_SIZE(wm8580_dai);
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codec->reg_cache_size = ARRAY_SIZE(wm8580->reg_cache);
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codec->reg_cache = &wm8580->reg_cache;
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memcpy(codec->reg_cache, wm8580_reg, sizeof(wm8580_reg));
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/* Get the codec into a known state */
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ret = wm8580_write(codec, WM8580_RESET, 0);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to reset codec: %d\n", ret);
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goto err;
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}
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for (i = 0; i < ARRAY_SIZE(wm8580_dai); i++)
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wm8580_dai[i].dev = codec->dev;
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wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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wm8580_codec = codec;
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ret = snd_soc_register_codec(codec);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to register codec: %d\n", ret);
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goto err;
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}
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ret = snd_soc_register_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
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if (ret != 0) {
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dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
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goto err_codec;
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}
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return 0;
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err_codec:
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snd_soc_unregister_codec(codec);
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err:
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kfree(wm8580);
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return ret;
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}
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static void wm8580_unregister(struct wm8580_priv *wm8580)
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{
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wm8580_set_bias_level(&wm8580->codec, SND_SOC_BIAS_OFF);
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snd_soc_unregister_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
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snd_soc_unregister_codec(&wm8580->codec);
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kfree(wm8580);
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wm8580_codec = NULL;
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}
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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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/*
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* WM8580 2 wire address is determined by GPIO5
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* state during powerup.
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* low = 0x1a
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* high = 0x1b
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*/
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static int wm8580_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct snd_soc_device *socdev = wm8580_socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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int ret;
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struct wm8580_priv *wm8580;
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struct snd_soc_codec *codec;
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i2c_set_clientdata(i2c, codec);
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wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
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if (wm8580 == NULL)
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return -ENOMEM;
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codec = &wm8580->codec;
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codec->hw_write = (hw_write_t)i2c_master_send;
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i2c_set_clientdata(i2c, wm8580);
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codec->control_data = i2c;
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ret = wm8580_init(socdev);
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if (ret < 0)
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dev_err(&i2c->dev, "failed to initialise WM8580\n");
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return ret;
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codec->dev = &i2c->dev;
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return wm8580_register(wm8580);
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}
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static int wm8580_i2c_remove(struct i2c_client *client)
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{
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struct snd_soc_codec *codec = i2c_get_clientdata(client);
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kfree(codec->reg_cache);
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struct wm8580_priv *wm8580 = i2c_get_clientdata(client);
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wm8580_unregister(wm8580);
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return 0;
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}
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@ -917,127 +999,35 @@ MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
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static struct i2c_driver wm8580_i2c_driver = {
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.driver = {
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.name = "WM8580 I2C Codec",
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.name = "wm8580",
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.owner = THIS_MODULE,
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},
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.probe = wm8580_i2c_probe,
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.remove = wm8580_i2c_remove,
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.id_table = wm8580_i2c_id,
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};
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static int wm8580_add_i2c_device(struct platform_device *pdev,
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const struct wm8580_setup_data *setup)
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{
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struct i2c_board_info info;
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struct i2c_adapter *adapter;
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struct i2c_client *client;
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int ret;
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ret = i2c_add_driver(&wm8580_i2c_driver);
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if (ret != 0) {
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dev_err(&pdev->dev, "can't add i2c driver\n");
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return ret;
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}
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memset(&info, 0, sizeof(struct i2c_board_info));
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info.addr = setup->i2c_address;
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strlcpy(info.type, "wm8580", I2C_NAME_SIZE);
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adapter = i2c_get_adapter(setup->i2c_bus);
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if (!adapter) {
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dev_err(&pdev->dev, "can't get i2c adapter %d\n",
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setup->i2c_bus);
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goto err_driver;
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}
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client = i2c_new_device(adapter, &info);
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i2c_put_adapter(adapter);
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if (!client) {
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dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
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(unsigned int)info.addr);
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goto err_driver;
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}
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return 0;
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err_driver:
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i2c_del_driver(&wm8580_i2c_driver);
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return -ENODEV;
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}
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#endif
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static int wm8580_probe(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct wm8580_setup_data *setup;
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struct snd_soc_codec *codec;
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struct wm8580_priv *wm8580;
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int ret = 0;
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setup = socdev->codec_data;
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codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
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if (codec == NULL)
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return -ENOMEM;
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wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
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if (wm8580 == NULL) {
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kfree(codec);
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return -ENOMEM;
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}
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codec->private_data = wm8580;
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socdev->card->codec = codec;
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mutex_init(&codec->mutex);
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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wm8580_socdev = socdev;
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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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if (setup->i2c_address) {
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codec->hw_write = (hw_write_t)i2c_master_send;
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ret = wm8580_add_i2c_device(pdev, setup);
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}
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#else
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/* Add other interfaces here */
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#endif
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return ret;
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}
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/* power down chip */
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static int wm8580_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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if (codec->control_data)
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wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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i2c_unregister_device(codec->control_data);
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i2c_del_driver(&wm8580_i2c_driver);
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#endif
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kfree(codec->private_data);
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kfree(codec);
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return 0;
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}
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struct snd_soc_codec_device soc_codec_dev_wm8580 = {
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.probe = wm8580_probe,
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.remove = wm8580_remove,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
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static int __init wm8580_modinit(void)
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{
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return snd_soc_register_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
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int ret;
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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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ret = i2c_add_driver(&wm8580_i2c_driver);
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if (ret != 0) {
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pr_err("Failed to register WM8580 I2C driver: %d\n", ret);
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}
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#endif
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return 0;
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}
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module_init(wm8580_modinit);
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static void __exit wm8580_exit(void)
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{
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snd_soc_unregister_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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i2c_del_driver(&wm8580_i2c_driver);
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#endif
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}
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module_exit(wm8580_exit);
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@ -28,11 +28,6 @@
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#define WM8580_CLKSRC_OSC 4
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#define WM8580_CLKSRC_NONE 5
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struct wm8580_setup_data {
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int i2c_bus;
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unsigned short i2c_address;
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};
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#define WM8580_DAI_PAIFRX 0
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#define WM8580_DAI_PAIFTX 1
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