* wm8753.c -- WM8753 ALSA Soc Audio driver
*
* Copyright 2003 Wolfson Microelectronics PLC.
- * Author: Liam Girdwood
- * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "wm8753.h"
-#define AUDIO_NAME "wm8753"
-#define WM8753_VERSION "0.16"
-
static int caps_charge = 2000;
module_param(caps_charge, int, 0);
MODULE_PARM_DESC(caps_charge, "WM8753 cap charge time (msecs)");
static void wm8753_set_dai_mode(struct snd_soc_codec *codec,
unsigned int mode);
-/* codec private data */
-struct wm8753_priv {
- unsigned int sysclk;
- unsigned int pcmclk;
-};
-
/*
* wm8753 register cache
* We can't read the WM8753 register space when we
0x0097, 0x0097, 0x0000, 0x0004,
0x0000, 0x0083, 0x0024, 0x01ba,
0x0000, 0x0083, 0x0024, 0x01ba,
- 0x0000, 0x0000
+ 0x0000, 0x0000, 0x0000
+};
+
+/* codec private data */
+struct wm8753_priv {
+ unsigned int sysclk;
+ unsigned int pcmclk;
+ struct snd_soc_codec codec;
+ u16 reg_cache[ARRAY_SIZE(wm8753_reg)];
};
/*
unsigned int reg)
{
u16 *cache = codec->reg_cache;
- if (reg < 1 || reg > (ARRAY_SIZE(wm8753_reg) + 1))
+ if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
return -1;
return cache[reg - 1];
}
unsigned int reg, unsigned int value)
{
u16 *cache = codec->reg_cache;
- if (reg < 1 || reg > 0x3f)
+ if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
return;
cache[reg - 1] = value;
}
SOC_ENUM("ROUT2 Phase", wm8753_enum[28]),
};
-/* add non dapm controls */
-static int wm8753_add_controls(struct snd_soc_codec *codec)
-{
- int err, i;
-
- for (i = 0; i < ARRAY_SIZE(wm8753_snd_controls); i++) {
- err = snd_ctl_add(codec->card,
- snd_soc_cnew(&wm8753_snd_controls[i],
- codec, NULL));
- if (err < 0)
- return err;
- }
- return 0;
-}
-
/*
* _DAPM_ Controls
*/
/* Mono Capture mixer-mux */
{"Capture Right Mixer", "Stereo", "Capture Right Mux"},
+ {"Capture Left Mixer", "Stereo", "Capture Left Mux"},
{"Capture Left Mixer", "Analogue Mix Left", "Capture Left Mux"},
{"Capture Left Mixer", "Analogue Mix Left", "Capture Right Mux"},
{"Capture Right Mixer", "Analogue Mix Right", "Capture Left Mux"},
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
- snd_soc_dapm_new_widgets(codec);
return 0;
}
if ((Ndiv < 6) || (Ndiv > 12))
printk(KERN_WARNING
- "wm8753: unsupported N = %d\n", Ndiv);
+ "wm8753: unsupported N = %u\n", Ndiv);
pll_div->n = Ndiv;
Nmod = target % source;
pll_div->k = K;
}
-static int wm8753_set_dai_pll(struct snd_soc_dai *codec_dai,
- int pll_id, unsigned int freq_in, unsigned int freq_out)
+static int wm8753_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
+ int source, unsigned int freq_in, unsigned int freq_out)
{
u16 reg, enable;
int offset;
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
- struct wm8753_priv *wm8753 = codec->private_data;
+ struct wm8753_priv *wm8753 = snd_soc_codec_get_drvdata(codec);
switch (freq) {
case 11289600:
* Set PCM DAI bit size and sample rate.
*/
static int wm8753_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->codec;
- struct wm8753_priv *wm8753 = codec->private_data;
+ struct snd_soc_codec *codec = socdev->card->codec;
+ struct wm8753_priv *wm8753 = snd_soc_codec_get_drvdata(codec);
u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01f3;
u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x017f;
* Set PCM DAI bit size and sample rate.
*/
static int wm8753_i2s_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->codec;
- struct wm8753_priv *wm8753 = codec->private_data;
+ struct snd_soc_codec *codec = socdev->card->codec;
+ struct wm8753_priv *wm8753 = snd_soc_codec_get_drvdata(codec);
u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x01c0;
u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01f3;
int coeff;
* 3. Voice disabled - HIFI over HIFI
* 4. Voice disabled - HIFI over HIFI, uses voice DAI LRC for capture
*/
+static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode1 = {
+ .hw_params = wm8753_i2s_hw_params,
+ .digital_mute = wm8753_mute,
+ .set_fmt = wm8753_mode1h_set_dai_fmt,
+ .set_clkdiv = wm8753_set_dai_clkdiv,
+ .set_pll = wm8753_set_dai_pll,
+ .set_sysclk = wm8753_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode1 = {
+ .hw_params = wm8753_pcm_hw_params,
+ .digital_mute = wm8753_mute,
+ .set_fmt = wm8753_mode1v_set_dai_fmt,
+ .set_clkdiv = wm8753_set_dai_clkdiv,
+ .set_pll = wm8753_set_dai_pll,
+ .set_sysclk = wm8753_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode2 = {
+ .hw_params = wm8753_pcm_hw_params,
+ .digital_mute = wm8753_mute,
+ .set_fmt = wm8753_mode2_set_dai_fmt,
+ .set_clkdiv = wm8753_set_dai_clkdiv,
+ .set_pll = wm8753_set_dai_pll,
+ .set_sysclk = wm8753_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode3 = {
+ .hw_params = wm8753_i2s_hw_params,
+ .digital_mute = wm8753_mute,
+ .set_fmt = wm8753_mode3_4_set_dai_fmt,
+ .set_clkdiv = wm8753_set_dai_clkdiv,
+ .set_pll = wm8753_set_dai_pll,
+ .set_sysclk = wm8753_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode4 = {
+ .hw_params = wm8753_i2s_hw_params,
+ .digital_mute = wm8753_mute,
+ .set_fmt = wm8753_mode3_4_set_dai_fmt,
+ .set_clkdiv = wm8753_set_dai_clkdiv,
+ .set_pll = wm8753_set_dai_pll,
+ .set_sysclk = wm8753_set_dai_sysclk,
+};
+
static const struct snd_soc_dai wm8753_all_dai[] = {
/* DAI HiFi mode 1 */
{ .name = "WM8753 HiFi",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
- .formats = WM8753_FORMATS,},
+ .formats = WM8753_FORMATS},
.capture = { /* dummy for fast DAI switching */
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
- .formats = WM8753_FORMATS,},
- .ops = {
- .hw_params = wm8753_i2s_hw_params,},
- .dai_ops = {
- .digital_mute = wm8753_mute,
- .set_fmt = wm8753_mode1h_set_dai_fmt,
- .set_clkdiv = wm8753_set_dai_clkdiv,
- .set_pll = wm8753_set_dai_pll,
- .set_sysclk = wm8753_set_dai_sysclk,
- },
+ .formats = WM8753_FORMATS},
+ .ops = &wm8753_dai_ops_hifi_mode1,
},
/* DAI Voice mode 1 */
{ .name = "WM8753 Voice",
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
- .ops = {
- .hw_params = wm8753_pcm_hw_params,},
- .dai_ops = {
- .digital_mute = wm8753_mute,
- .set_fmt = wm8753_mode1v_set_dai_fmt,
- .set_clkdiv = wm8753_set_dai_clkdiv,
- .set_pll = wm8753_set_dai_pll,
- .set_sysclk = wm8753_set_dai_sysclk,
- },
+ .ops = &wm8753_dai_ops_voice_mode1,
},
/* DAI HiFi mode 2 - dummy */
{ .name = "WM8753 HiFi",
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
- .ops = {
- .hw_params = wm8753_pcm_hw_params,},
- .dai_ops = {
- .digital_mute = wm8753_mute,
- .set_fmt = wm8753_mode2_set_dai_fmt,
- .set_clkdiv = wm8753_set_dai_clkdiv,
- .set_pll = wm8753_set_dai_pll,
- .set_sysclk = wm8753_set_dai_sysclk,
- },
+ .ops = &wm8753_dai_ops_voice_mode2,
},
/* DAI HiFi mode 3 */
{ .name = "WM8753 HiFi",
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
- .ops = {
- .hw_params = wm8753_i2s_hw_params,},
- .dai_ops = {
- .digital_mute = wm8753_mute,
- .set_fmt = wm8753_mode3_4_set_dai_fmt,
- .set_clkdiv = wm8753_set_dai_clkdiv,
- .set_pll = wm8753_set_dai_pll,
- .set_sysclk = wm8753_set_dai_sysclk,
- },
+ .ops = &wm8753_dai_ops_hifi_mode3,
},
/* DAI Voice mode 3 - dummy */
{ .name = "WM8753 Voice",
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
- .ops = {
- .hw_params = wm8753_i2s_hw_params,},
- .dai_ops = {
- .digital_mute = wm8753_mute,
- .set_fmt = wm8753_mode3_4_set_dai_fmt,
- .set_clkdiv = wm8753_set_dai_clkdiv,
- .set_pll = wm8753_set_dai_pll,
- .set_sysclk = wm8753_set_dai_sysclk,
- },
+ .ops = &wm8753_dai_ops_hifi_mode4,
},
/* DAI Voice mode 4 - dummy */
{ .name = "WM8753 Voice",
},
};
-struct snd_soc_dai wm8753_dai[2];
+struct snd_soc_dai wm8753_dai[] = {
+ {
+ .name = "WM8753 DAI 0",
+ },
+ {
+ .name = "WM8753 DAI 1",
+ },
+};
EXPORT_SYMBOL_GPL(wm8753_dai);
static void wm8753_set_dai_mode(struct snd_soc_codec *codec, unsigned int mode)
if (mode < 4) {
int playback_active, capture_active, codec_active, pop_wait;
void *private_data;
+ struct list_head list;
playback_active = wm8753_dai[0].playback.active;
capture_active = wm8753_dai[0].capture.active;
codec_active = wm8753_dai[0].active;
private_data = wm8753_dai[0].private_data;
pop_wait = wm8753_dai[0].pop_wait;
+ list = wm8753_dai[0].list;
wm8753_dai[0] = wm8753_all_dai[mode << 1];
wm8753_dai[0].playback.active = playback_active;
wm8753_dai[0].capture.active = capture_active;
wm8753_dai[0].active = codec_active;
wm8753_dai[0].private_data = private_data;
wm8753_dai[0].pop_wait = pop_wait;
+ wm8753_dai[0].list = list;
playback_active = wm8753_dai[1].playback.active;
capture_active = wm8753_dai[1].capture.active;
codec_active = wm8753_dai[1].active;
private_data = wm8753_dai[1].private_data;
pop_wait = wm8753_dai[1].pop_wait;
+ list = wm8753_dai[1].list;
wm8753_dai[1] = wm8753_all_dai[(mode << 1) + 1];
wm8753_dai[1].playback.active = playback_active;
wm8753_dai[1].capture.active = capture_active;
wm8753_dai[1].active = codec_active;
wm8753_dai[1].private_data = private_data;
wm8753_dai[1].pop_wait = pop_wait;
+ wm8753_dai[1].list = list;
}
wm8753_dai[0].codec = codec;
wm8753_dai[1].codec = codec;
static int wm8753_suspend(struct platform_device *pdev, pm_message_t state)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->codec;
-
- /* we only need to suspend if we are a valid card */
- if (!codec->card)
- return 0;
+ struct snd_soc_codec *codec = socdev->card->codec;
wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
static int wm8753_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
int i;
u8 data[2];
u16 *cache = codec->reg_cache;
- /* we only need to resume if we are a valid card */
- if (!codec->card)
- return 0;
-
/* Sync reg_cache with the hardware */
for (i = 0; i < ARRAY_SIZE(wm8753_reg); i++) {
if (i + 1 == WM8753_RESET)
continue;
+
+ /* No point in writing hardware default values back */
+ if (cache[i] == wm8753_reg[i])
+ continue;
+
data[0] = ((i + 1) << 1) | ((cache[i] >> 8) & 0x0001);
data[1] = cache[i] & 0x00ff;
codec->hw_write(codec->control_data, data, 2);
return 0;
}
+static struct snd_soc_codec *wm8753_codec;
+
+static int wm8753_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret = 0;
+
+ if (!wm8753_codec) {
+ dev_err(&pdev->dev, "WM8753 codec not yet registered\n");
+ return -EINVAL;
+ }
+
+ socdev->card->codec = wm8753_codec;
+ codec = wm8753_codec;
+
+ wm8753_set_dai_mode(codec, 0);
+
+ /* register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ printk(KERN_ERR "wm8753: failed to create pcms\n");
+ goto pcm_err;
+ }
+
+ snd_soc_add_controls(codec, wm8753_snd_controls,
+ ARRAY_SIZE(wm8753_snd_controls));
+ wm8753_add_widgets(codec);
+
+ return 0;
+
+pcm_err:
+ return ret;
+}
+
/*
- * initialise the WM8753 driver
- * register the mixer and dsp interfaces with the kernel
+ * This function forces any delayed work to be queued and run.
*/
-static int wm8753_init(struct snd_soc_device *socdev)
+static int run_delayed_work(struct delayed_work *dwork)
{
- struct snd_soc_codec *codec = socdev->codec;
- int reg, ret = 0;
+ int ret;
+
+ /* cancel any work waiting to be queued. */
+ ret = cancel_delayed_work(dwork);
+
+ /* if there was any work waiting then we run it now and
+ * wait for it's completion */
+ if (ret) {
+ schedule_delayed_work(dwork, 0);
+ flush_scheduled_work();
+ }
+ return ret;
+}
+
+/* power down chip */
+static int wm8753_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm8753 = {
+ .probe = wm8753_probe,
+ .remove = wm8753_remove,
+ .suspend = wm8753_suspend,
+ .resume = wm8753_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753);
+
+static int wm8753_register(struct wm8753_priv *wm8753)
+{
+ int ret, i;
+ struct snd_soc_codec *codec = &wm8753->codec;
+ u16 reg;
+
+ if (wm8753_codec) {
+ dev_err(codec->dev, "Multiple WM8753 devices not supported\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
codec->name = "WM8753";
codec->owner = THIS_MODULE;
codec->read = wm8753_read_reg_cache;
codec->write = wm8753_write;
+ codec->bias_level = SND_SOC_BIAS_STANDBY;
codec->set_bias_level = wm8753_set_bias_level;
codec->dai = wm8753_dai;
codec->num_dai = 2;
- codec->reg_cache_size = ARRAY_SIZE(wm8753_reg);
- codec->reg_cache = kmemdup(wm8753_reg, sizeof(wm8753_reg), GFP_KERNEL);
-
- if (codec->reg_cache == NULL)
- return -ENOMEM;
-
- wm8753_set_dai_mode(codec, 0);
+ codec->reg_cache_size = ARRAY_SIZE(wm8753->reg_cache) + 1;
+ codec->reg_cache = &wm8753->reg_cache;
+ snd_soc_codec_set_drvdata(codec, wm8753);
- wm8753_reset(codec);
+ memcpy(codec->reg_cache, wm8753_reg, sizeof(wm8753->reg_cache));
+ INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
- /* register pcms */
- ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ ret = wm8753_reset(codec);
if (ret < 0) {
- printk(KERN_ERR "wm8753: failed to create pcms\n");
- goto pcm_err;
+ dev_err(codec->dev, "Failed to issue reset\n");
+ goto err;
}
/* charge output caps */
wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
- codec->bias_level = SND_SOC_BIAS_STANDBY;
schedule_delayed_work(&codec->delayed_work,
- msecs_to_jiffies(caps_charge));
+ msecs_to_jiffies(caps_charge));
/* set the update bits */
reg = wm8753_read_reg_cache(codec, WM8753_LDAC);
reg = wm8753_read_reg_cache(codec, WM8753_RINVOL);
wm8753_write(codec, WM8753_RINVOL, reg | 0x0100);
- wm8753_add_controls(codec);
- wm8753_add_widgets(codec);
- ret = snd_soc_register_card(socdev);
- if (ret < 0) {
- printk(KERN_ERR "wm8753: failed to register card\n");
- goto card_err;
+ wm8753_codec = codec;
+
+ for (i = 0; i < ARRAY_SIZE(wm8753_dai); i++)
+ wm8753_dai[i].dev = codec->dev;
+
+ ret = snd_soc_register_codec(codec);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register codec: %d\n", ret);
+ goto err;
}
- return ret;
+ ret = snd_soc_register_dais(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
+ goto err_codec;
+ }
-card_err:
- snd_soc_free_pcms(socdev);
- snd_soc_dapm_free(socdev);
-pcm_err:
- kfree(codec->reg_cache);
+ return 0;
+
+err_codec:
+ run_delayed_work(&codec->delayed_work);
+ snd_soc_unregister_codec(codec);
+err:
+ kfree(wm8753);
return ret;
}
-/* If the i2c layer weren't so broken, we could pass this kind of data
- around */
-static struct snd_soc_device *wm8753_socdev;
+static void wm8753_unregister(struct wm8753_priv *wm8753)
+{
+ wm8753_set_bias_level(&wm8753->codec, SND_SOC_BIAS_OFF);
+ run_delayed_work(&wm8753->codec.delayed_work);
+ snd_soc_unregister_dais(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
+ snd_soc_unregister_codec(&wm8753->codec);
+ kfree(wm8753);
+ wm8753_codec = NULL;
+}
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-/*
- * WM8753 2 wire address is determined by GPIO5
- * state during powerup.
- * low = 0x1a
- * high = 0x1b
- */
-
static int wm8753_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
- struct snd_soc_device *socdev = wm8753_socdev;
- struct snd_soc_codec *codec = socdev->codec;
- int ret;
+ struct snd_soc_codec *codec;
+ struct wm8753_priv *wm8753;
+
+ wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
+ if (wm8753 == NULL)
+ return -ENOMEM;
- i2c_set_clientdata(i2c, codec);
- codec->control_data = i2c;
+ codec = &wm8753->codec;
+ codec->hw_write = (hw_write_t)i2c_master_send;
+ codec->control_data = i2c;
+ i2c_set_clientdata(i2c, wm8753);
- ret = wm8753_init(socdev);
- if (ret < 0)
- pr_err("failed to initialise WM8753\n");
+ codec->dev = &i2c->dev;
- return ret;
+ return wm8753_register(wm8753);
}
static int wm8753_i2c_remove(struct i2c_client *client)
{
- struct snd_soc_codec *codec = i2c_get_clientdata(client);
- kfree(codec->reg_cache);
- return 0;
+ struct wm8753_priv *wm8753 = i2c_get_clientdata(client);
+ wm8753_unregister(wm8753);
+ return 0;
}
static const struct i2c_device_id wm8753_i2c_id[] = {
static struct i2c_driver wm8753_i2c_driver = {
.driver = {
- .name = "WM8753 I2C Codec",
+ .name = "wm8753",
.owner = THIS_MODULE,
},
.probe = wm8753_i2c_probe,
.remove = wm8753_i2c_remove,
.id_table = wm8753_i2c_id,
};
+#endif
-static int wm8753_add_i2c_device(struct platform_device *pdev,
- const struct wm8753_setup_data *setup)
+#if defined(CONFIG_SPI_MASTER)
+static int wm8753_spi_write(struct spi_device *spi, const char *data, int len)
{
- struct i2c_board_info info;
- struct i2c_adapter *adapter;
- struct i2c_client *client;
- int ret;
+ struct spi_transfer t;
+ struct spi_message m;
+ u8 msg[2];
- ret = i2c_add_driver(&wm8753_i2c_driver);
- if (ret != 0) {
- dev_err(&pdev->dev, "can't add i2c driver\n");
- return ret;
- }
+ if (len <= 0)
+ return 0;
- memset(&info, 0, sizeof(struct i2c_board_info));
- info.addr = setup->i2c_address;
- strlcpy(info.type, "wm8753", I2C_NAME_SIZE);
+ msg[0] = data[0];
+ msg[1] = data[1];
- adapter = i2c_get_adapter(setup->i2c_bus);
- if (!adapter) {
- dev_err(&pdev->dev, "can't get i2c adapter %d\n",
- setup->i2c_bus);
- goto err_driver;
- }
+ spi_message_init(&m);
+ memset(&t, 0, (sizeof t));
- client = i2c_new_device(adapter, &info);
- i2c_put_adapter(adapter);
- if (!client) {
- dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
- (unsigned int)info.addr);
- goto err_driver;
- }
+ t.tx_buf = &msg[0];
+ t.len = len;
- return 0;
+ spi_message_add_tail(&t, &m);
+ spi_sync(spi, &m);
-err_driver:
- i2c_del_driver(&wm8753_i2c_driver);
- return -ENODEV;
+ return len;
}
-#endif
-static int wm8753_probe(struct platform_device *pdev)
+static int __devinit wm8753_spi_probe(struct spi_device *spi)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct wm8753_setup_data *setup;
struct snd_soc_codec *codec;
struct wm8753_priv *wm8753;
- int ret = 0;
-
- pr_info("WM8753 Audio Codec %s", WM8753_VERSION);
-
- setup = socdev->codec_data;
- codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
- if (codec == NULL)
- return -ENOMEM;
wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
- if (wm8753 == NULL) {
- kfree(codec);
+ if (wm8753 == NULL)
return -ENOMEM;
- }
- codec->private_data = wm8753;
- socdev->codec = codec;
- mutex_init(&codec->mutex);
- INIT_LIST_HEAD(&codec->dapm_widgets);
- INIT_LIST_HEAD(&codec->dapm_paths);
- wm8753_socdev = socdev;
- INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
+ codec = &wm8753->codec;
+ codec->control_data = spi;
+ codec->hw_write = (hw_write_t)wm8753_spi_write;
+ codec->dev = &spi->dev;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- if (setup->i2c_address) {
- codec->hw_write = (hw_write_t)i2c_master_send;
- ret = wm8753_add_i2c_device(pdev, setup);
- }
-#else
- /* Add other interfaces here */
-#endif
+ dev_set_drvdata(&spi->dev, wm8753);
- if (ret != 0) {
- kfree(codec->private_data);
- kfree(codec);
- }
- return ret;
+ return wm8753_register(wm8753);
}
-/*
- * This function forces any delayed work to be queued and run.
- */
-static int run_delayed_work(struct delayed_work *dwork)
+static int __devexit wm8753_spi_remove(struct spi_device *spi)
{
- int ret;
+ struct wm8753_priv *wm8753 = dev_get_drvdata(&spi->dev);
+ wm8753_unregister(wm8753);
+ return 0;
+}
- /* cancel any work waiting to be queued. */
- ret = cancel_delayed_work(dwork);
+static struct spi_driver wm8753_spi_driver = {
+ .driver = {
+ .name = "wm8753",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8753_spi_probe,
+ .remove = __devexit_p(wm8753_spi_remove),
+};
+#endif
- /* if there was any work waiting then we run it now and
- * wait for it's completion */
- if (ret) {
- schedule_delayed_work(dwork, 0);
- flush_scheduled_work();
- }
- return ret;
+static int __init wm8753_modinit(void)
+{
+ int ret;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ ret = i2c_add_driver(&wm8753_i2c_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM8753 I2C driver: %d\n", ret);
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ ret = spi_register_driver(&wm8753_spi_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM8753 SPI driver: %d\n", ret);
+#endif
+ return 0;
}
+module_init(wm8753_modinit);
-/* power down chip */
-static int wm8753_remove(struct platform_device *pdev)
+static void __exit wm8753_exit(void)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->codec;
-
- if (codec->control_data)
- wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
- run_delayed_work(&codec->delayed_work);
- snd_soc_free_pcms(socdev);
- snd_soc_dapm_free(socdev);
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- i2c_unregister_device(codec->control_data);
i2c_del_driver(&wm8753_i2c_driver);
#endif
- kfree(codec->private_data);
- kfree(codec);
-
- return 0;
+#if defined(CONFIG_SPI_MASTER)
+ spi_unregister_driver(&wm8753_spi_driver);
+#endif
}
-
-struct snd_soc_codec_device soc_codec_dev_wm8753 = {
- .probe = wm8753_probe,
- .remove = wm8753_remove,
- .suspend = wm8753_suspend,
- .resume = wm8753_resume,
-};
-EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753);
+module_exit(wm8753_exit);
MODULE_DESCRIPTION("ASoC WM8753 driver");
MODULE_AUTHOR("Liam Girdwood");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff