diff options
Diffstat (limited to 'sound/soc/fsl/fsl_sai.c')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 28ea420e6e1d..37c32183f79c 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -29,6 +29,8 @@ #define FSL_SAI_FLAGS (FSL_SAI_CSR_SEIE |\ FSL_SAI_CSR_FEIE) +#define FSL_SAI_VERID_0301 0x0301 + static struct fsl_sai_soc_data fsl_sai_vf610 = { .imx = false, /*dataline is mask, not index*/ @@ -422,6 +424,48 @@ static int fsl_sai_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) return ret; } +static int fsl_sai_check_ver(struct snd_soc_dai *cpu_dai) +{ + struct fsl_sai *sai = dev_get_drvdata(cpu_dai->dev); + unsigned char offset = sai->soc->reg_offset; + unsigned int val; + + if (FSL_SAI_TCSR(offset) == FSL_SAI_VERID) + return 0; + + if (sai->verid.loaded) + return 0; + + sai->verid.loaded = true; + regmap_read(sai->regmap, FSL_SAI_VERID, &val); + dev_dbg(cpu_dai->dev, "VERID: 0x%016X\n", val); + + sai->verid.id = (val & FSL_SAI_VER_ID_MASK) >> FSL_SAI_VER_ID_SHIFT; + sai->verid.extfifo_en = (val & FSL_SAI_VER_EFIFO_EN); + sai->verid.timestamp_en = (val & FSL_SAI_VER_TSTMP_EN); + + regmap_read(sai->regmap, FSL_SAI_PARAM, &val); + dev_dbg(cpu_dai->dev, "PARAM: 0x%016X\n", val); + + /* max slots per frame, power of 2 */ + sai->param.spf = 1 << + ((val & FSL_SAI_PAR_SPF_MASK) >> FSL_SAI_PAR_SPF_SHIFT); + + /* words per fifo, power of 2 */ + sai->param.wpf = 1 << + ((val & FSL_SAI_PAR_WPF_MASK) >> FSL_SAI_PAR_WPF_SHIFT); + + /* number of datalines implemented */ + sai->param.dln = val & FSL_SAI_PAR_DLN_MASK; + + dev_dbg(cpu_dai->dev, + "Version: 0x%08X, SPF: %u, WPF: %u, DLN: %u\n", + sai->verid.id, sai->param.spf, sai->param.wpf, sai->param.dln + ); + + return 0; +} + static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) { struct fsl_sai *sai = snd_soc_dai_get_drvdata(dai); @@ -502,6 +546,15 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) FSL_SAI_CR2_DIV_MASK, savediv - 1); } + fsl_sai_check_ver(dai); + switch (sai->verid.id) { + case FSL_SAI_VERID_0301: + /* SAI is in master mode at this point, so enable MCLK */ + regmap_update_bits(sai->regmap, FSL_SAI_MCTL, + FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN); + break; + } + dev_dbg(dai->dev, "best fit: clock id=%d, div=%d, deviation =%d\n", sai->mclk_id[tx], savediv, savesub); @@ -1001,6 +1054,8 @@ static struct reg_default fsl_sai_v3_reg_defaults[] = { {FSL_SAI_RCR4(8), 0}, {FSL_SAI_RCR5(8), 0}, {FSL_SAI_RMR, 0}, + {FSL_SAI_MCTL, 0}, + {FSL_SAI_MDIV, 0}, }; static bool fsl_sai_readable_reg(struct device *dev, unsigned int reg) @@ -1041,6 +1096,10 @@ static bool fsl_sai_readable_reg(struct device *dev, unsigned int reg) case FSL_SAI_RFR6: case FSL_SAI_RFR7: case FSL_SAI_RMR: + case FSL_SAI_MCTL: + case FSL_SAI_MDIV: + case FSL_SAI_VERID: + case FSL_SAI_PARAM: return true; default: return false; @@ -1056,6 +1115,8 @@ static bool fsl_sai_volatile_reg(struct device *dev, unsigned int reg) return true; switch (reg) { + case FSL_SAI_VERID: + case FSL_SAI_PARAM: case FSL_SAI_TFR0: case FSL_SAI_TFR1: case FSL_SAI_TFR2: @@ -1108,6 +1169,8 @@ static bool fsl_sai_writeable_reg(struct device *dev, unsigned int reg) case FSL_SAI_TDR7: case FSL_SAI_TMR: case FSL_SAI_RMR: + case FSL_SAI_MCTL: + case FSL_SAI_MDIV: return true; default: return false; @@ -1133,7 +1196,7 @@ static const struct regmap_config fsl_sai_v3_regmap_config = { .reg_stride = 4, .val_bits = 32, - .max_register = FSL_SAI_RMR, + .max_register = FSL_SAI_MDIV, .reg_defaults = fsl_sai_v3_reg_defaults, .num_reg_defaults = ARRAY_SIZE(fsl_sai_v3_reg_defaults), .readable_reg = fsl_sai_readable_reg, |