-/*
- * read tlv320aic23 register cache
- */
-static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
- *codec, unsigned int reg)
-{
- u16 *cache = codec->reg_cache;
- if (reg >= ARRAY_SIZE(tlv320aic23_reg))
- return -1;
- return cache[reg];
-}
-
-/*
- * write tlv320aic23 register cache
- */
-static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
- u8 reg, u16 value)
-{
- u16 *cache = codec->reg_cache;
- if (reg >= ARRAY_SIZE(tlv320aic23_reg))
- return;
- cache[reg] = value;
-}
-
-/*
- * write to the tlv320aic23 register space
- */
-static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
-
- u8 data[2];
-
- /* TLV320AIC23 has 7 bit address and 9 bits of data
- * so we need to switch one data bit into reg and rest
- * of data into val
- */
-
- if (reg > 9 && reg != 15) {
- printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg);
- return -1;
- }
-
- data[0] = (reg << 1) | (value >> 8 & 0x01);
- data[1] = value & 0xff;
-
- tlv320aic23_write_reg_cache(codec, reg, value);
-
- if (codec->hw_write(codec->control_data, data, 2) == 2)
- return 0;
-
- printk(KERN_ERR "%s cannot write %03x to register R%u\n", __func__,
- value, reg);
-
- return -EIO;
-}
-