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path: root/sound/soc/sh/rcar/ssi.c
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Diffstat (limited to 'sound/soc/sh/rcar/ssi.c')
-rw-r--r--sound/soc/sh/rcar/ssi.c161
1 files changed, 75 insertions, 86 deletions
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index fece1e5f582f..97a9db892a8f 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -79,8 +79,8 @@ struct rsnd_ssi {
int irq;
unsigned int usrcnt;
+ /* for PIO */
int byte_pos;
- int period_pos;
int byte_per_period;
int next_period_byte;
};
@@ -371,11 +371,11 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
if (rsnd_io_is_play(io))
cr_own |= TRMD;
- switch (runtime->sample_bits) {
+ switch (snd_pcm_format_width(runtime->format)) {
case 16:
cr_own |= DWL_16;
break;
- case 32:
+ case 24:
cr_own |= DWL_24;
break;
}
@@ -414,59 +414,6 @@ static void rsnd_ssi_register_setup(struct rsnd_mod *mod)
ssi->cr_en);
}
-static void rsnd_ssi_pointer_init(struct rsnd_mod *mod,
- struct rsnd_dai_stream *io)
-{
- struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
- struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-
- ssi->byte_pos = 0;
- ssi->period_pos = 0;
- ssi->byte_per_period = runtime->period_size *
- runtime->channels *
- samples_to_bytes(runtime, 1);
- ssi->next_period_byte = ssi->byte_per_period;
-}
-
-static int rsnd_ssi_pointer_offset(struct rsnd_mod *mod,
- struct rsnd_dai_stream *io,
- int additional)
-{
- struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
- struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
- int pos = ssi->byte_pos + additional;
-
- pos %= (runtime->periods * ssi->byte_per_period);
-
- return pos;
-}
-
-static bool rsnd_ssi_pointer_update(struct rsnd_mod *mod,
- struct rsnd_dai_stream *io,
- int byte)
-{
- struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
-
- ssi->byte_pos += byte;
-
- if (ssi->byte_pos >= ssi->next_period_byte) {
- struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-
- ssi->period_pos++;
- ssi->next_period_byte += ssi->byte_per_period;
-
- if (ssi->period_pos >= runtime->periods) {
- ssi->byte_pos = 0;
- ssi->period_pos = 0;
- ssi->next_period_byte = ssi->byte_per_period;
- }
-
- return true;
- }
-
- return false;
-}
-
/*
* SSI mod common functions
*/
@@ -480,8 +427,6 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
if (!rsnd_ssi_is_run_mods(mod, io))
return 0;
- rsnd_ssi_pointer_init(mod, io);
-
ssi->usrcnt++;
rsnd_mod_power_on(mod);
@@ -652,6 +597,8 @@ static int rsnd_ssi_irq(struct rsnd_mod *mod,
return 0;
}
+static bool rsnd_ssi_pio_interrupt(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io);
static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
@@ -670,30 +617,8 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
status = rsnd_ssi_status_get(mod);
/* PIO only */
- if (!is_dma && (status & DIRQ)) {
- struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
- u32 *buf = (u32 *)(runtime->dma_area +
- rsnd_ssi_pointer_offset(mod, io, 0));
- int shift = 0;
-
- switch (runtime->sample_bits) {
- case 32:
- shift = 8;
- break;
- }
-
- /*
- * 8/16/32 data can be assesse to TDR/RDR register
- * directly as 32bit data
- * see rsnd_ssi_init()
- */
- if (rsnd_io_is_play(io))
- rsnd_mod_write(mod, SSITDR, (*buf) << shift);
- else
- *buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
-
- elapsed = rsnd_ssi_pointer_update(mod, io, sizeof(*buf));
- }
+ if (!is_dma && (status & DIRQ))
+ elapsed = rsnd_ssi_pio_interrupt(mod, io);
/* DMA only */
if (is_dma && (status & (UIRQ | OIRQ)))
@@ -831,14 +756,78 @@ static int rsnd_ssi_common_remove(struct rsnd_mod *mod,
return 0;
}
-static int rsnd_ssi_pointer(struct rsnd_mod *mod,
+/*
+ * SSI PIO functions
+ */
+static bool rsnd_ssi_pio_interrupt(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io)
+{
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+ u32 *buf = (u32 *)(runtime->dma_area + ssi->byte_pos);
+ int shift = 0;
+ int byte_pos;
+ bool elapsed = false;
+
+ if (snd_pcm_format_width(runtime->format) == 24)
+ shift = 8;
+
+ /*
+ * 8/16/32 data can be assesse to TDR/RDR register
+ * directly as 32bit data
+ * see rsnd_ssi_init()
+ */
+ if (rsnd_io_is_play(io))
+ rsnd_mod_write(mod, SSITDR, (*buf) << shift);
+ else
+ *buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
+
+ byte_pos = ssi->byte_pos + sizeof(*buf);
+
+ if (byte_pos >= ssi->next_period_byte) {
+ int period_pos = byte_pos / ssi->byte_per_period;
+
+ if (period_pos >= runtime->periods) {
+ byte_pos = 0;
+ period_pos = 0;
+ }
+
+ ssi->next_period_byte = (period_pos + 1) * ssi->byte_per_period;
+
+ elapsed = true;
+ }
+
+ WRITE_ONCE(ssi->byte_pos, byte_pos);
+
+ return elapsed;
+}
+
+static int rsnd_ssi_pio_init(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
+{
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+
+ if (!rsnd_ssi_is_parent(mod, io)) {
+ ssi->byte_pos = 0;
+ ssi->byte_per_period = runtime->period_size *
+ runtime->channels *
+ samples_to_bytes(runtime, 1);
+ ssi->next_period_byte = ssi->byte_per_period;
+ }
+
+ return rsnd_ssi_init(mod, io, priv);
+}
+
+static int rsnd_ssi_pio_pointer(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
snd_pcm_uframes_t *pointer)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
- *pointer = bytes_to_frames(runtime, ssi->byte_pos);
+ *pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos));
return 0;
}
@@ -847,12 +836,12 @@ static struct rsnd_mod_ops rsnd_ssi_pio_ops = {
.name = SSI_NAME,
.probe = rsnd_ssi_common_probe,
.remove = rsnd_ssi_common_remove,
- .init = rsnd_ssi_init,
+ .init = rsnd_ssi_pio_init,
.quit = rsnd_ssi_quit,
.start = rsnd_ssi_start,
.stop = rsnd_ssi_stop,
.irq = rsnd_ssi_irq,
- .pointer= rsnd_ssi_pointer,
+ .pointer = rsnd_ssi_pio_pointer,
.pcm_new = rsnd_ssi_pcm_new,
.hw_params = rsnd_ssi_hw_params,
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-26 05:55:35 +0300