diff options
Diffstat (limited to 'sound/soc/codecs')
| -rw-r--r-- | sound/soc/codecs/cs4270.c | 92 |
1 files changed, 27 insertions, 65 deletions
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c index f1aa0c34421..2e4ce04925e 100644 --- a/sound/soc/codecs/cs4270.c +++ b/sound/soc/codecs/cs4270.c @@ -12,11 +12,7 @@ * * Current features/limitations: * - * 1) Software mode is supported. Stand-alone mode is automatically - * selected if I2C is disabled or if a CS4270 is not found on the I2C - * bus. However, stand-alone mode is only partially implemented because - * there is no mechanism yet for this driver and the machine driver to - * communicate the values of the M0, M1, MCLK1, and MCLK2 pins. + * 1) Software mode is supported. Stand-alone mode is not supported. * 2) Only I2C is supported, not SPI * 3) Only Master mode is supported, not Slave. * 4) The machine driver's 'startup' function must call @@ -33,14 +29,6 @@ #include <sound/initval.h> #include <linux/i2c.h> -#include "cs4270.h" - -/* If I2C is defined, then we support software mode. However, if we're - not compiled as module but I2C is, then we can't use I2C calls. */ -#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE)) -#define USE_I2C -#endif - /* Private data for the CS4270 */ struct cs4270_private { unsigned int mclk; /* Input frequency of the MCLK pin */ @@ -60,8 +48,6 @@ struct cs4270_private { SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE) -#ifdef USE_I2C - /* CS4270 registers addresses */ #define CS4270_CHIPID 0x01 /* Chip ID */ #define CS4270_PWRCTL 0x02 /* Power Control */ @@ -272,17 +258,6 @@ static int cs4270_set_dai_fmt(struct snd_soc_dai *codec_dai, } /* - * A list of addresses on which this CS4270 could use. I2C addresses are - * 7 bits. For the CS4270, the upper four bits are always 1001, and the - * lower three bits are determined via the AD2, AD1, and AD0 pins - * (respectively). - */ -static const unsigned short normal_i2c[] = { - 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, I2C_CLIENT_END -}; -I2C_CLIENT_INSMOD; - -/* * Pre-fill the CS4270 register cache. * * We use the auto-increment feature of the CS4270 to read all registers in @@ -476,7 +451,6 @@ static int cs4270_hw_params(struct snd_pcm_substream *substream, } #ifdef CONFIG_SND_SOC_CS4270_HWMUTE - /* * Set the CS4270 external mute * @@ -501,32 +475,16 @@ static int cs4270_mute(struct snd_soc_dai *dai, int mute) return snd_soc_write(codec, CS4270_MUTE, reg6); } - +#else +#define cs4270_mute NULL #endif -static int cs4270_i2c_probe(struct i2c_client *, const struct i2c_device_id *); - /* A list of non-DAPM controls that the CS4270 supports */ static const struct snd_kcontrol_new cs4270_snd_controls[] = { SOC_DOUBLE_R("Master Playback Volume", CS4270_VOLA, CS4270_VOLB, 0, 0xFF, 1) }; -static const struct i2c_device_id cs4270_id[] = { - {"cs4270", 0}, - {} -}; -MODULE_DEVICE_TABLE(i2c, cs4270_id); - -static struct i2c_driver cs4270_i2c_driver = { - .driver = { - .name = "CS4270 I2C", - .owner = THIS_MODULE, - }, - .id_table = cs4270_id, - .probe = cs4270_i2c_probe, -}; - /* * Global variable to store socdev for i2c probe function. * @@ -633,7 +591,20 @@ error: return ret; } -#endif /* USE_I2C*/ +static const struct i2c_device_id cs4270_id[] = { + {"cs4270", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, cs4270_id); + +static struct i2c_driver cs4270_i2c_driver = { + .driver = { + .name = "cs4270", + .owner = THIS_MODULE, + }, + .id_table = cs4270_id, + .probe = cs4270_i2c_probe, +}; struct snd_soc_dai cs4270_dai = { .name = "CS4270", @@ -698,7 +669,6 @@ static int cs4270_probe(struct platform_device *pdev) goto error_free_codec; } -#ifdef USE_I2C cs4270_socdev = socdev; ret = i2c_add_driver(&cs4270_i2c_driver); @@ -708,20 +678,16 @@ static int cs4270_probe(struct platform_device *pdev) } /* Did we find a CS4270 on the I2C bus? */ - if (codec->control_data) { - /* Initialize codec ops */ - cs4270_dai.ops.hw_params = cs4270_hw_params; - cs4270_dai.ops.set_sysclk = cs4270_set_dai_sysclk; - cs4270_dai.ops.set_fmt = cs4270_set_dai_fmt; -#ifdef CONFIG_SND_SOC_CS4270_HWMUTE - cs4270_dai.ops.digital_mute = cs4270_mute; -#endif - } else - printk(KERN_INFO "cs4270: no I2C device found, " - "using stand-alone mode\n"); -#else - printk(KERN_INFO "cs4270: I2C disabled, using stand-alone mode\n"); -#endif + if (!codec->control_data) { + printk(KERN_ERR "cs4270: failed to attach driver"); + goto error_del_driver; + } + + /* Initialize codec ops */ + cs4270_dai.ops.hw_params = cs4270_hw_params; + cs4270_dai.ops.set_sysclk = cs4270_set_dai_sysclk; + cs4270_dai.ops.set_fmt = cs4270_set_dai_fmt; + cs4270_dai.ops.digital_mute = cs4270_mute; ret = snd_soc_init_card(socdev); if (ret < 0) { @@ -732,11 +698,9 @@ static int cs4270_probe(struct platform_device *pdev) return 0; error_del_driver: -#ifdef USE_I2C i2c_del_driver(&cs4270_i2c_driver); error_free_pcms: -#endif snd_soc_free_pcms(socdev); error_free_codec: @@ -752,9 +716,7 @@ static int cs4270_remove(struct platform_device *pdev) snd_soc_free_pcms(socdev); -#ifdef USE_I2C i2c_del_driver(&cs4270_i2c_driver); -#endif kfree(socdev->codec); socdev->codec = NULL; |