diff options
Diffstat (limited to 'sound/soc/sh/rcar/ssi.c')
| -rw-r--r-- | sound/soc/sh/rcar/ssi.c | 54 |
1 files changed, 40 insertions, 14 deletions
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 8304e4ec9242..f707f53748bd 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -42,7 +42,13 @@ #define DWL_24 (5 << 19) /* Data Word Length */ #define DWL_32 (6 << 19) /* Data Word Length */ +/* + * System word length + */ +#define SWL_16 (1 << 16) /* R/W System Word Length */ +#define SWL_24 (2 << 16) /* R/W System Word Length */ #define SWL_32 (3 << 16) /* R/W System Word Length */ + #define SCKD (1 << 15) /* Serial Bit Clock Direction */ #define SWSD (1 << 14) /* Serial WS Direction */ #define SCKP (1 << 13) /* Serial Bit Clock Polarity */ @@ -220,14 +226,32 @@ u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io) return 0; } -unsigned int rsnd_ssi_clk_query(struct rsnd_priv *priv, +static u32 rsnd_rdai_width_to_swl(struct rsnd_dai *rdai) +{ + struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); + struct device *dev = rsnd_priv_to_dev(priv); + int width = rsnd_rdai_width_get(rdai); + + switch (width) { + case 32: return SWL_32; + case 24: return SWL_24; + case 16: return SWL_16; + } + + dev_err(dev, "unsupported slot width value: %d\n", width); + return 0; +} + +unsigned int rsnd_ssi_clk_query(struct rsnd_dai *rdai, int param1, int param2, int *idx) { + struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); int ssi_clk_mul_table[] = { 1, 2, 4, 8, 16, 6, 12, }; int j, ret; unsigned int main_rate; + int width = rsnd_rdai_width_get(rdai); for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { @@ -240,12 +264,7 @@ unsigned int rsnd_ssi_clk_query(struct rsnd_priv *priv, if (j == 0) continue; - /* - * this driver is assuming that - * system word is 32bit x chan - * see rsnd_ssi_init() - */ - main_rate = 32 * param1 * param2 * ssi_clk_mul_table[j]; + main_rate = width * param1 * param2 * ssi_clk_mul_table[j]; ret = rsnd_adg_clk_query(priv, main_rate); if (ret < 0) @@ -292,7 +311,7 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, return 0; } - main_rate = rsnd_ssi_clk_query(priv, rate, chan, &idx); + main_rate = rsnd_ssi_clk_query(rdai, rate, chan, &idx); if (!main_rate) { dev_err(dev, "unsupported clock rate\n"); return -EIO; @@ -312,7 +331,8 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, * SSICR : FORCE, SCKD, SWSD * SSIWSR : CONT */ - ssi->cr_clk = FORCE | SWL_32 | SCKD | SWSD | CKDV(idx); + ssi->cr_clk = FORCE | rsnd_rdai_width_to_swl(rdai) | + SCKD | SWSD | CKDV(idx); ssi->wsr = CONT; ssi->rate = rate; @@ -357,11 +377,7 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod, is_tdm = rsnd_runtime_is_ssi_tdm(io); - /* - * always use 32bit system word. - * see also rsnd_ssi_master_clk_enable() - */ - cr_own |= FORCE | SWL_32; + cr_own |= FORCE | rsnd_rdai_width_to_swl(rdai); if (rdai->bit_clk_inv) cr_own |= SCKP; @@ -494,7 +510,17 @@ static int rsnd_ssi_hw_params(struct rsnd_mod *mod, struct snd_pcm_hw_params *params) { struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dai *rdai = rsnd_io_to_rdai(io); int chan = params_channels(params); + unsigned int fmt_width = snd_pcm_format_width(params_format(params)); + + if (fmt_width > rdai->chan_width) { + struct rsnd_priv *priv = rsnd_io_to_priv(io); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_err(dev, "invalid combination of slot-width and format-data-width\n"); + return -EINVAL; + } /* * snd_pcm_ops::hw_params will be called *before* |