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Diffstat (limited to 'sound/soc/sh/rcar/ssi.c')
-rw-r--r--sound/soc/sh/rcar/ssi.c112
1 files changed, 66 insertions, 46 deletions
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 3f880ec66459..fcb4df23248c 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 */
@@ -72,7 +78,6 @@
struct rsnd_ssi {
struct rsnd_mod mod;
- struct rsnd_mod *dma;
u32 flags;
u32 cr_own;
@@ -145,6 +150,11 @@ int rsnd_ssi_use_busif(struct rsnd_dai_stream *io)
return use_busif;
}
+int rsnd_ssi_get_busif(struct rsnd_dai_stream *io)
+{
+ return 0; /* BUSIF0 only for now */
+}
+
static void rsnd_ssi_status_clear(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, SSISR, 0);
@@ -220,14 +230,32 @@ 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 +268,7 @@ 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)
@@ -289,10 +312,15 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod,
return -EINVAL;
}
+ if (ssi->chan != chan) {
+ dev_err(dev, "SSI parent/child should use same chan\n");
+ return -EINVAL;
+ }
+
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;
@@ -312,9 +340,11 @@ 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;
+ ssi->chan = chan;
dev_dbg(dev, "%s[%d] outputs %u Hz\n",
rsnd_mod_name(mod),
@@ -340,6 +370,7 @@ static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod,
ssi->cr_clk = 0;
ssi->rate = 0;
+ ssi->chan = 0;
rsnd_adg_ssi_clk_stop(mod);
}
@@ -357,15 +388,11 @@ 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;
- if (rdai->frm_clk_inv ^ is_tdm)
+ if (rdai->frm_clk_inv && !is_tdm)
cr_own |= SWSP;
if (rdai->data_alignment)
cr_own |= SDTA;
@@ -373,6 +400,17 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
cr_own |= DEL;
/*
+ * TDM Mode
+ * see
+ * rsnd_ssiu_init_gen2()
+ */
+ wsr = ssi->wsr;
+ if (is_tdm) {
+ wsr |= WS_MODE;
+ cr_own |= CHNL_8;
+ }
+
+ /*
* We shouldn't exchange SWSP after running.
* This means, parent needs to care it.
*/
@@ -384,6 +422,9 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
cr_own &= ~DWL_MASK;
switch (snd_pcm_format_width(runtime->format)) {
+ case 8:
+ cr_own |= DWL_8;
+ break;
case 16:
cr_own |= DWL_16;
break;
@@ -399,16 +440,6 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
cr_mode = DIEN; /* PIO : enable Data interrupt */
}
- /*
- * TDM Extend Mode
- * see
- * rsnd_ssiu_init_gen2()
- */
- wsr = ssi->wsr;
- if (is_tdm) {
- wsr |= WS_MODE;
- cr_own |= CHNL_8;
- }
init_end:
ssi->cr_own = cr_own;
ssi->cr_mode = cr_mode;
@@ -488,26 +519,16 @@ static int rsnd_ssi_hw_params(struct rsnd_mod *mod,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
- struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
- int chan = params_channels(params);
+ struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
+ unsigned int fmt_width = snd_pcm_format_width(params_format(params));
- /*
- * snd_pcm_ops::hw_params will be called *before*
- * snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0
- * in 1st call.
- */
- if (ssi->usrcnt) {
- /*
- * Already working.
- * It will happen if SSI has parent/child connection.
- * it is error if child <-> parent SSI uses
- * different channels.
- */
- if (ssi->chan != chan)
- return -EIO;
- }
+ if (fmt_width > rdai->chan_width) {
+ struct rsnd_priv *priv = rsnd_io_to_priv(io);
+ struct device *dev = rsnd_priv_to_dev(priv);
- ssi->chan = chan;
+ dev_err(dev, "invalid combination of slot-width and format-data-width\n");
+ return -EINVAL;
+ }
return 0;
}
@@ -873,7 +894,6 @@ static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
- struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int ret;
/*
@@ -888,7 +908,7 @@ static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
return ret;
/* SSI probe might be called many times in MUX multi path */
- ret = rsnd_dma_attach(io, mod, &ssi->dma);
+ ret = rsnd_dma_attach(io, mod, &io->dma);
return ret;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.