diff options
Diffstat (limited to 'sound/soc/codecs/wm8753.c')
-rw-r--r-- | sound/soc/codecs/wm8753.c | 114 |
1 files changed, 94 insertions, 20 deletions
diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c index 8c4df44..6c21b50 100644 --- a/sound/soc/codecs/wm8753.c +++ b/sound/soc/codecs/wm8753.c @@ -2,8 +2,7 @@ * 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 @@ -40,6 +39,7 @@ #include <linux/pm.h> #include <linux/i2c.h> #include <linux/platform_device.h> +#include <linux/spi/spi.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -51,7 +51,6 @@ #include "wm8753.h" -#define AUDIO_NAME "wm8753" #define WM8753_VERSION "0.16" static int caps_charge = 2000; @@ -923,7 +922,8 @@ static int wm8753_vdac_adc_set_dai_fmt(struct snd_soc_dai *codec_dai, * 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; @@ -1156,7 +1156,8 @@ static int wm8753_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai, * 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; @@ -1324,16 +1325,15 @@ static const struct snd_soc_dai wm8753_all_dai[] = { .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,}, + .formats = WM8753_FORMATS}, .ops = { - .hw_params = wm8753_i2s_hw_params,}, - .dai_ops = { + .hw_params = wm8753_i2s_hw_params, .digital_mute = wm8753_mute, .set_fmt = wm8753_mode1h_set_dai_fmt, .set_clkdiv = wm8753_set_dai_clkdiv, @@ -1357,8 +1357,7 @@ static const struct snd_soc_dai wm8753_all_dai[] = { .rates = WM8753_RATES, .formats = WM8753_FORMATS,}, .ops = { - .hw_params = wm8753_pcm_hw_params,}, - .dai_ops = { + .hw_params = wm8753_pcm_hw_params, .digital_mute = wm8753_mute, .set_fmt = wm8753_mode1v_set_dai_fmt, .set_clkdiv = wm8753_set_dai_clkdiv, @@ -1386,8 +1385,7 @@ static const struct snd_soc_dai wm8753_all_dai[] = { .rates = WM8753_RATES, .formats = WM8753_FORMATS,}, .ops = { - .hw_params = wm8753_pcm_hw_params,}, - .dai_ops = { + .hw_params = wm8753_pcm_hw_params, .digital_mute = wm8753_mute, .set_fmt = wm8753_mode2_set_dai_fmt, .set_clkdiv = wm8753_set_dai_clkdiv, @@ -1411,8 +1409,7 @@ static const struct snd_soc_dai wm8753_all_dai[] = { .rates = WM8753_RATES, .formats = WM8753_FORMATS,}, .ops = { - .hw_params = wm8753_i2s_hw_params,}, - .dai_ops = { + .hw_params = wm8753_i2s_hw_params, .digital_mute = wm8753_mute, .set_fmt = wm8753_mode3_4_set_dai_fmt, .set_clkdiv = wm8753_set_dai_clkdiv, @@ -1440,8 +1437,7 @@ static const struct snd_soc_dai wm8753_all_dai[] = { .rates = WM8753_RATES, .formats = WM8753_FORMATS,}, .ops = { - .hw_params = wm8753_i2s_hw_params,}, - .dai_ops = { + .hw_params = wm8753_i2s_hw_params, .digital_mute = wm8753_mute, .set_fmt = wm8753_mode3_4_set_dai_fmt, .set_clkdiv = wm8753_set_dai_clkdiv, @@ -1609,7 +1605,7 @@ static int wm8753_init(struct snd_soc_device *socdev) wm8753_add_controls(codec); wm8753_add_widgets(codec); - ret = snd_soc_register_card(socdev); + ret = snd_soc_init_card(socdev); if (ret < 0) { printk(KERN_ERR "wm8753: failed to register card\n"); goto card_err; @@ -1719,6 +1715,63 @@ err_driver: } #endif +#if defined(CONFIG_SPI_MASTER) +static int __devinit wm8753_spi_probe(struct spi_device *spi) +{ + struct snd_soc_device *socdev = wm8753_socdev; + struct snd_soc_codec *codec = socdev->codec; + int ret; + + codec->control_data = spi; + + ret = wm8753_init(socdev); + if (ret < 0) + dev_err(&spi->dev, "failed to initialise WM8753\n"); + + return ret; +} + +static int __devexit wm8753_spi_remove(struct spi_device *spi) +{ + return 0; +} + +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), +}; + +static int wm8753_spi_write(struct spi_device *spi, const char *data, int len) +{ + struct spi_transfer t; + struct spi_message m; + u8 msg[2]; + + if (len <= 0) + return 0; + + msg[0] = data[0]; + msg[1] = data[1]; + + spi_message_init(&m); + memset(&t, 0, (sizeof t)); + + t.tx_buf = &msg[0]; + t.len = len; + + spi_message_add_tail(&t, &m); + spi_sync(spi, &m); + + return len; +} +#endif + + static int wm8753_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); @@ -1753,8 +1806,14 @@ static int wm8753_probe(struct platform_device *pdev) codec->hw_write = (hw_write_t)i2c_master_send; ret = wm8753_add_i2c_device(pdev, setup); } -#else - /* Add other interfaces here */ +#endif +#if defined(CONFIG_SPI_MASTER) + if (setup->spi) { + codec->hw_write = (hw_write_t)wm8753_spi_write; + ret = spi_register_driver(&wm8753_spi_driver); + if (ret != 0) + printk(KERN_ERR "can't add spi driver"); + } #endif if (ret != 0) { @@ -1798,6 +1857,9 @@ static int wm8753_remove(struct platform_device *pdev) i2c_unregister_device(codec->control_data); i2c_del_driver(&wm8753_i2c_driver); #endif +#if defined(CONFIG_SPI_MASTER) + spi_unregister_driver(&wm8753_spi_driver); +#endif kfree(codec->private_data); kfree(codec); @@ -1812,6 +1874,18 @@ struct snd_soc_codec_device soc_codec_dev_wm8753 = { }; EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753); +static int __init wm8753_modinit(void) +{ + return snd_soc_register_dais(wm8753_dai, ARRAY_SIZE(wm8753_dai)); +} +module_init(wm8753_modinit); + +static void __exit wm8753_exit(void) +{ + snd_soc_unregister_dais(wm8753_dai, ARRAY_SIZE(wm8753_dai)); +} +module_exit(wm8753_exit); + MODULE_DESCRIPTION("ASoC WM8753 driver"); MODULE_AUTHOR("Liam Girdwood"); MODULE_LICENSE("GPL"); |