This patch modifies the MAX98095 audio codec to support I2S0 channel in codec slave mode.
Signed-off-by: Dani Krishna Mohan krishna.md@samsung.com --- drivers/sound/max98095.c | 128 ++++++++++++++++++++++++++++++---------------- drivers/sound/max98095.h | 10 +++- drivers/sound/sound.c | 17 +++--- 3 files changed, 100 insertions(+), 55 deletions(-)
diff --git a/drivers/sound/max98095.c b/drivers/sound/max98095.c index d69db58..f7ec4d7 100644 --- a/drivers/sound/max98095.c +++ b/drivers/sound/max98095.c @@ -52,7 +52,7 @@ int rate_table[] = {0, 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, static int max98095_i2c_write(unsigned int reg, unsigned char data) { debug("%s: Write Addr : 0x%02X, Data : 0x%02X\n", - __func__, reg, data); + __func__, reg, data); return i2c_write(g_max98095_i2c_dev_addr, reg, 1, &data, 1); }
@@ -71,7 +71,7 @@ static unsigned int max98095_i2c_read(unsigned int reg, unsigned char *data) ret = i2c_read(g_max98095_i2c_dev_addr, reg, 1, data, 1); if (ret != 0) { debug("%s: Error while reading register %#04x\n", - __func__, reg); + __func__, reg); return -1; }
@@ -138,42 +138,56 @@ static int rate_value(int rate, u8 *value) * @return -1 for error and 0 Success. */ static int max98095_hw_params(struct max98095_priv *max98095, - unsigned int rate, unsigned int bits_per_sample) + enum en_max_audio_interface aif_id, + unsigned int rate, unsigned int bits_per_sample) { u8 regval; int error; + unsigned short M98095_DAI_CLKMODE; + unsigned short M98095_DAI_FORMAT; + unsigned short M98095_DAI_FILTERS; + + if (aif_id == AIF1) { + M98095_DAI_CLKMODE = M98095_027_DAI1_CLKMODE; + M98095_DAI_FORMAT = M98095_02A_DAI1_FORMAT; + M98095_DAI_FILTERS = M98095_02E_DAI1_FILTERS; + } else { + M98095_DAI_CLKMODE = M98095_031_DAI2_CLKMODE; + M98095_DAI_FORMAT = M98095_034_DAI2_FORMAT; + M98095_DAI_FILTERS = M98095_038_DAI2_FILTERS; + }
switch (bits_per_sample) { case 16: - error = max98095_update_bits(M98095_034_DAI2_FORMAT, + error = max98095_update_bits(M98095_DAI_FORMAT, M98095_DAI_WS, 0); break; case 24: - error = max98095_update_bits(M98095_034_DAI2_FORMAT, + error = max98095_update_bits(M98095_DAI_FORMAT, M98095_DAI_WS, M98095_DAI_WS); break; default: debug("%s: Illegal bits per sample %d.\n", - __func__, bits_per_sample); + __func__, bits_per_sample); return -1; }
if (rate_value(rate, ®val)) { debug("%s: Failed to set sample rate to %d.\n", - __func__, rate); + __func__, rate); return -1; } max98095->rate = rate;
- error |= max98095_update_bits(M98095_031_DAI2_CLKMODE, + error |= max98095_update_bits(M98095_DAI_CLKMODE, M98095_CLKMODE_MASK, regval);
/* Update sample rate mode */ if (rate < 50000) - error |= max98095_update_bits(M98095_038_DAI2_FILTERS, + error |= max98095_update_bits(M98095_DAI_FILTERS, M98095_DAI_DHF, 0); else - error |= max98095_update_bits(M98095_038_DAI2_FILTERS, + error |= max98095_update_bits(M98095_DAI_FILTERS, M98095_DAI_DHF, M98095_DAI_DHF);
if (error < 0) { @@ -235,22 +249,39 @@ static int max98095_set_sysclk(struct max98095_priv *max98095, * * @return -1 for error and 0 Success. */ -static int max98095_set_fmt(struct max98095_priv *max98095, int fmt) +static int max98095_set_fmt(struct max98095_priv *max98095, int fmt, + enum en_max_audio_interface aif_id) { u8 regval = 0; int error = 0; + unsigned short M98095_DAI_CLKCFG_HI; + unsigned short M98095_DAI_CLKCFG_LO; + unsigned short M98095_DAI_FORMAT; + unsigned short M98095_DAI_CLOCK;
if (fmt == max98095->fmt) return 0;
max98095->fmt = fmt;
+ if (aif_id == AIF1) { + M98095_DAI_CLKCFG_HI = M98095_028_DAI1_CLKCFG_HI; + M98095_DAI_CLKCFG_LO = M98095_029_DAI1_CLKCFG_LO; + M98095_DAI_FORMAT = M98095_02A_DAI1_FORMAT; + M98095_DAI_CLOCK = M98095_02B_DAI1_CLOCK; + } else { + M98095_DAI_CLKCFG_HI = M98095_032_DAI2_CLKCFG_HI; + M98095_DAI_CLKCFG_LO = M98095_033_DAI2_CLKCFG_LO; + M98095_DAI_FORMAT = M98095_034_DAI2_FORMAT; + M98095_DAI_CLOCK = M98095_035_DAI2_CLOCK; + } + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: /* Slave mode PLL */ - error |= max98095_i2c_write(M98095_032_DAI2_CLKCFG_HI, + error |= max98095_i2c_write(M98095_DAI_CLKCFG_HI, 0x80); - error |= max98095_i2c_write(M98095_033_DAI2_CLKCFG_LO, + error |= max98095_i2c_write(M98095_DAI_CLKCFG_LO, 0x00); break; case SND_SOC_DAIFMT_CBM_CFM: @@ -292,11 +323,11 @@ static int max98095_set_fmt(struct max98095_priv *max98095, int fmt) return -1; }
- error |= max98095_update_bits(M98095_034_DAI2_FORMAT, + error |= max98095_update_bits(M98095_DAI_FORMAT, M98095_DAI_MAS | M98095_DAI_DLY | M98095_DAI_BCI | M98095_DAI_WCI, regval);
- error |= max98095_i2c_write(M98095_035_DAI2_CLOCK, + error |= max98095_i2c_write(M98095_DAI_CLOCK, M98095_DAI_BSEL64);
if (error < 0) { @@ -354,7 +385,8 @@ static int max98095_reset(void) * * @returns -1 for error and 0 Success. */ -static int max98095_device_init(struct max98095_priv *max98095) +static int max98095_device_init(struct max98095_priv *max98095, + enum en_max_audio_interface aif_id) { unsigned char id; int error = 0; @@ -374,7 +406,7 @@ static int max98095_device_init(struct max98095_priv *max98095) error = max98095_i2c_read(M98095_0FF_REV_ID, &id); if (error < 0) { debug("%s: Failure reading hardware revision: %d\n", - __func__, id); + __func__, id); goto err_access; } debug("%s: Hardware revision: %c\n", __func__, (id - 0x40) + 'A'); @@ -385,22 +417,22 @@ static int max98095_device_init(struct max98095_priv *max98095) * initialize registers to hardware default configuring audio * interface2 to DAC */ - error |= max98095_i2c_write(M98095_048_MIX_DAC_LR, - M98095_DAI2M_TO_DACL|M98095_DAI2M_TO_DACR); + if (aif_id == AIF1) + error |= max98095_i2c_write(M98095_048_MIX_DAC_LR, + M98095_DAI1L_TO_DACL|M98095_DAI1R_TO_DACR); + else + error |= max98095_i2c_write(M98095_048_MIX_DAC_LR, + M98095_DAI2M_TO_DACL|M98095_DAI2M_TO_DACR);
error |= max98095_i2c_write(M98095_092_PWR_EN_OUT, M98095_SPK_SPREADSPECTRUM); - error |= max98095_i2c_write(M98095_045_CFG_DSP, M98095_DSPNORMAL); error |= max98095_i2c_write(M98095_04E_CFG_HP, M98095_HPNORMAL); - - error |= max98095_i2c_write(M98095_02C_DAI1_IOCFG, - M98095_S1NORMAL|M98095_SDATA); - - error |= max98095_i2c_write(M98095_036_DAI2_IOCFG, - M98095_S2NORMAL|M98095_SDATA); - - error |= max98095_i2c_write(M98095_040_DAI3_IOCFG, - M98095_S3NORMAL|M98095_SDATA); + if (aif_id == AIF1) + error |= max98095_i2c_write(M98095_02C_DAI1_IOCFG, + M98095_S1NORMAL|M98095_SDATA); + else + error |= max98095_i2c_write(M98095_036_DAI2_IOCFG, + M98095_S2NORMAL|M98095_SDATA);
/* take the codec out of the shut down */ error |= max98095_update_bits(M98095_097_PWR_SYS, M98095_SHDNRUN, @@ -422,7 +454,10 @@ static int max98095_device_init(struct max98095_priv *max98095)
/* Enable DAIs */ error |= max98095_i2c_write(M98095_093_BIAS_CTRL, 0x30); - error |= max98095_i2c_write(M98095_096_PWR_DAC_CK, 0x07); + if (aif_id == AIF1) + error |= max98095_i2c_write(M98095_096_PWR_DAC_CK, 0x01); + else + error |= max98095_i2c_write(M98095_096_PWR_DAC_CK, 0x07);
err_access: if (error < 0) @@ -432,8 +467,9 @@ err_access: }
static int max98095_do_init(struct sound_codec_info *pcodec_info, - int sampling_rate, int mclk_freq, - int bits_per_sample) + enum en_max_audio_interface aif_id, + int sampling_rate, int mclk_freq, + int bits_per_sample) { int ret = 0;
@@ -443,15 +479,15 @@ static int max98095_do_init(struct sound_codec_info *pcodec_info, /* shift the device address by 1 for 7 bit addressing */ g_max98095_i2c_dev_addr = pcodec_info->i2c_dev_addr >> 1;
- if (pcodec_info->codec_type == CODEC_MAX_98095) + if (pcodec_info->codec_type == CODEC_MAX_98095) { g_max98095_info.devtype = MAX98095; - else { + } else { debug("%s: Codec id [%d] not defined\n", __func__, - pcodec_info->codec_type); + pcodec_info->codec_type); return -1; }
- ret = max98095_device_init(&g_max98095_info); + ret = max98095_device_init(&g_max98095_info, aif_id); if (ret < 0) { debug("%s: max98095 codec chip init failed\n", __func__); return ret; @@ -463,14 +499,15 @@ static int max98095_do_init(struct sound_codec_info *pcodec_info, return ret; }
- ret = max98095_hw_params(&g_max98095_info, sampling_rate, - bits_per_sample); + ret = max98095_hw_params(&g_max98095_info, aif_id, sampling_rate, + bits_per_sample);
if (ret == 0) { ret = max98095_set_fmt(&g_max98095_info, - SND_SOC_DAIFMT_I2S | - SND_SOC_DAIFMT_NB_NF | - SND_SOC_DAIFMT_CBS_CFS); + SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + aif_id); }
return ret; @@ -529,8 +566,9 @@ static int get_max98095_codec_values(struct sound_codec_info *pcodec_info, }
/* max98095 Device Initialisation */ -int max98095_init(const void *blob, int sampling_rate, int mclk_freq, - int bits_per_sample) +int max98095_init(const void *blob, enum en_max_audio_interface aif_id, + int sampling_rate, int mclk_freq, + int bits_per_sample) { int ret; int old_bus = i2c_get_bus_num(); @@ -542,8 +580,8 @@ int max98095_init(const void *blob, int sampling_rate, int mclk_freq, }
i2c_set_bus_num(pcodec_info->i2c_bus); - ret = max98095_do_init(pcodec_info, sampling_rate, mclk_freq, - bits_per_sample); + ret = max98095_do_init(pcodec_info, aif_id, sampling_rate, mclk_freq, + bits_per_sample); i2c_set_bus_num(old_bus);
return ret; diff --git a/drivers/sound/max98095.h b/drivers/sound/max98095.h index ae5eb14..44b1e3a 100644 --- a/drivers/sound/max98095.h +++ b/drivers/sound/max98095.h @@ -11,6 +11,12 @@ #ifndef _MAX98095_H #define _MAX98095_H
+/* Available audio interface ports in wm8994 codec */ +enum en_max_audio_interface { + AIF1 = 1, + AIF2, +}; + /* * MAX98095 Registers Definition */ @@ -305,7 +311,7 @@ * * @returns -1 for error and 0 Success. */ -int max98095_init(const void *blob, int sampling_rate, int mclk_freq, - int bits_per_sample); +int max98095_init(const void *blob, enum en_max_audio_interface aif_id, + int sampling_rate, int mclk_freq, int bits_per_sample);
#endif diff --git a/drivers/sound/sound.c b/drivers/sound/sound.c index f3342f2..9b8ce5a 100644 --- a/drivers/sound/sound.c +++ b/drivers/sound/sound.c @@ -116,7 +116,7 @@ static int codec_init(const void *blob, struct i2stx_info *pi2s_tx) int node;
/* Get the node from FDT for sound */ - node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SOUND); + node = fdt_path_offset(blob, "i2s"); if (node <= 0) { debug("EXYNOS_SOUND: No node for sound in device tree\n"); debug("node = %d\n", node); @@ -136,13 +136,14 @@ static int codec_init(const void *blob, struct i2stx_info *pi2s_tx) if (!strcmp(codectype, "wm8994")) { /* Check the codec type and initialise the same */ ret = wm8994_init(blob, pi2s_tx->id + 1, - pi2s_tx->samplingrate, - (pi2s_tx->samplingrate * (pi2s_tx->rfs)), - pi2s_tx->bitspersample, pi2s_tx->channels); + pi2s_tx->samplingrate, + (pi2s_tx->samplingrate * (pi2s_tx->rfs)), + pi2s_tx->bitspersample, pi2s_tx->channels); } else if (!strcmp(codectype, "max98095")) { - ret = max98095_init(blob, pi2s_tx->samplingrate, - (pi2s_tx->samplingrate * (pi2s_tx->rfs)), - pi2s_tx->bitspersample); + ret = max98095_init(blob, pi2s_tx->id + 1, + pi2s_tx->samplingrate, + (pi2s_tx->samplingrate * (pi2s_tx->rfs)), + pi2s_tx->bitspersample); } else { debug("%s: Unknown codec type %s\n", __func__, codectype); return -1; @@ -235,7 +236,7 @@ int sound_play(uint32_t msec, uint32_t frequency) }
sound_prepare_buffer((unsigned short *)data, - data_size / sizeof(unsigned short), frequency); + data_size / sizeof(unsigned short), frequency);
while (msec >= 1000) { ret = i2s_transfer_tx_data(&g_i2stx_pri, data,