static int rsnd_src_set_convert_rate(struct rsnd_mod *mod)
{
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_src *src = rsnd_mod_to_src(mod);
u32 convert_rate = rsnd_src_convert_rate(src);
u32 fsrate = 0;
if (convert_rate)
fsrate = 0x0400000 / convert_rate * runtime->rate;
/* set/clear soft reset */
rsnd_mod_write(mod, SRC_SWRSR, 0);
rsnd_mod_write(mod, SRC_SWRSR, 1);
/* Set channel number and output bit length */
rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr(mod));
/* Enable the initial value of IFS */
if (fsrate) {
rsnd_mod_write(mod, SRC_IFSCR, 1);
/* Set initial value of IFS */
rsnd_mod_write(mod, SRC_IFSVR, fsrate);
}
/* use DMA transfer */
rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
return 0;
}
static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rcar_snd_info *info = rsnd_priv_to_info(priv);
struct rsnd_src *src = rsnd_mod_to_src(mod);
struct rsnd_mod *ssi = rsnd_ssi_mod_get(priv, rsnd_mod_id(mod));
struct device *dev = rsnd_priv_to_dev(priv);
int ret;
int is_play;
if (info->dai_info)
is_play = rsnd_info_is_playback(priv, src);
else
is_play = rsnd_ssi_is_play(ssi);
ret = rsnd_dma_init(priv,
rsnd_mod_to_dma(mod),
is_play,
src->info->dma_id);
if (ret < 0)
dev_err(dev, "SRC DMA failed\n");
return ret;
}
static void rsnd_src_irq_ctrol_gen2(struct rsnd_mod *mod, int enable)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
u32 sys_int_val, int_val, sys_int_mask;
int irq = src->info->irq;
int id = rsnd_mod_id(mod);
sys_int_val =
sys_int_mask = OUF_SRC(id);
int_val = 0x3300;
/*
* IRQ is not supported on non-DT
* see
* rsnd_src_probe_gen2()
*/
if ((irq <= 0) || !enable) {
sys_int_val = 0;
int_val = 0;
}
rsnd_mod_write(mod, SRC_INT_ENABLE0, int_val);
rsnd_mod_bset(mod, SCU_SYS_INT_EN0, sys_int_mask, sys_int_val);
rsnd_mod_bset(mod, SCU_SYS_INT_EN1, sys_int_mask, sys_int_val);
}
static int rsnd_src_set_convert_timing_gen1(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_src *src = rsnd_mod_to_src(mod);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
u32 convert_rate = rsnd_src_convert_rate(src);
u32 mask;
u32 val;
int shift;
int id = rsnd_mod_id(mod);
int ret;
/*
* SRC_TIMING_SELECT
*/
shift = (id % 4) * 8;
mask = 0x1F << shift;
/*
* ADG is used as source clock if SRC was used,
* then, SSI WS is used as destination clock.
* SSI WS is used as source clock if SRC is not used
* (when playback, source/destination become reverse when capture)
*/
ret = 0;
if (convert_rate) {
/* use ADG */
val = 0;
ret = rsnd_adg_set_convert_clk_gen1(priv, mod,
runtime->rate,
convert_rate);
} else if (8 == id) {
/* use SSI WS, but SRU8 is special */
val = id << shift;
} else {
/* use SSI WS */
val = (id + 1) << shift;
}
if (ret < 0)
return ret;
switch (id / 4) {
case 0:
rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
break;
case 1:
rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
break;
case 2:
rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
break;
}
return 0;
}
static int rsnd_src_quit(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
clk_disable_unprepare(src->clk);
return 0;
}
static int rsnd_src_init(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
clk_prepare_enable(src->clk);
return 0;
}
static int rsnd_src_stop(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
if (rsnd_src_convert_rate(src))
rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);
return 0;
}
static int rsnd_src_stop_gen2(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
rsnd_mod_write(mod, SRC_CTRL, 0);
rsnd_dma_stop(rsnd_mod_to_dma(&src->mod));
return rsnd_src_stop(mod, rdai);
}
static int rsnd_src_start_gen2(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
rsnd_dma_start(rsnd_mod_to_dma(&src->mod));
rsnd_mod_write(mod, SSI_CTRL, 0x1);
rsnd_mod_write(mod, SRC_CTRL, 0x11);
return rsnd_src_start(mod, rdai, io);
}
static int rsnd_src_start_gen2(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
struct rsnd_src *src = rsnd_mod_to_src(mod);
u32 val = rsnd_io_to_mod_dvc(io) ? 0x01 : 0x11;
rsnd_dma_start(rsnd_mod_to_dma(&src->mod));
rsnd_mod_write(mod, SRC_CTRL, val);
return rsnd_src_start(mod, rdai);
}
static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_src *src = rsnd_mod_to_src(mod);
u32 convert_rate = rsnd_src_convert_rate(src);
uint ratio;
int ret;
/* 6 - 1/6 are very enough ratio for SRC_BSDSR */
if (!convert_rate)
ratio = 0;
else if (convert_rate > runtime->rate)
ratio = 100 * convert_rate / runtime->rate;
else
ratio = 100 * runtime->rate / convert_rate;
if (ratio > 600) {
dev_err(dev, "FSO/FSI ratio error\n");
return -EINVAL;
}
ret = rsnd_src_set_convert_rate(mod);
if (ret < 0)
return ret;
rsnd_mod_write(mod, SRC_SRCCR, 0x00011110);
if (convert_rate) {
/* Gen1/Gen2 are not compatible */
rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
}
switch (rsnd_mod_id(mod)) {
case 5:
case 6:
case 7:
case 8:
rsnd_mod_write(mod, SRC_BSDSR, 0x02400000);
break;
default:
rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
break;
}
rsnd_mod_write(mod, SRC_BSISR, 0x00100060);
return 0;
}
static int rsnd_src_quit(struct rsnd_mod *mod,
struct rsnd_priv *priv)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
struct device *dev = rsnd_priv_to_dev(priv);
rsnd_mod_hw_stop(mod);
if (src->err)
dev_warn(dev, "%s[%d] under/over flow err = %d\n",
rsnd_mod_name(mod), rsnd_mod_id(mod), src->err);
return 0;
}
static int rsnd_src_set_convert_rate(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_src *src = rsnd_mod_to_src(mod);
u32 convert_rate = rsnd_src_convert_rate(src);
u32 adinr = runtime->channels;
u32 fsrate = 0;
if (convert_rate)
fsrate = 0x0400000 / convert_rate * runtime->rate;
/* set/clear soft reset */
rsnd_mod_write(mod, SRC_SWRSR, 0);
rsnd_mod_write(mod, SRC_SWRSR, 1);
/*
* Initialize the operation of the SRC internal circuits
* see rsnd_src_start()
*/
rsnd_mod_write(mod, SRC_SRCIR, 1);
/* Set channel number and output bit length */
switch (runtime->sample_bits) {
case 16:
adinr |= OTBL_16;
break;
case 32:
adinr |= OTBL_24;
break;
default:
return -EIO;
}
rsnd_mod_write(mod, SRC_ADINR, adinr);
/* Enable the initial value of IFS */
if (fsrate) {
rsnd_mod_write(mod, SRC_IFSCR, 1);
/* Set initial value of IFS */
rsnd_mod_write(mod, SRC_IFSVR, fsrate);
}
/* use DMA transfer */
rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
return 0;
}
/*
* Gen1/Gen2 common functions
*/
int rsnd_src_ssi_mode_init(struct rsnd_mod *ssi_mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
struct rcar_snd_info *info = rsnd_priv_to_info(priv);
int ssi_id = rsnd_mod_id(ssi_mod);
int has_src = 0;
/*
* SSI_MODE0
*/
if (info->dai_info) {
has_src = !!src_mod;
} else {
struct rsnd_src *src = rsnd_mod_to_src(src_mod);
has_src = rsnd_src_hpbif_is_enable(src);
}
rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id),
has_src ? 0 : (1 << ssi_id));
/*
* SSI_MODE1
*/
if (rsnd_ssi_is_pin_sharing(ssi_mod)) {
int shift = -1;
switch (ssi_id) {
case 1:
shift = 0;
break;
case 2:
shift = 2;
break;
case 4:
shift = 16;
break;
}
if (shift >= 0)
rsnd_mod_bset(ssi_mod, SSI_MODE1,
0x3 << shift,
rsnd_dai_is_clk_master(rdai) ?
0x2 << shift : 0x1 << shift);
}
return 0;
}
static int rsnd_src_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
/*
* Cancel the initialization and operate the SRC function
* see rsnd_src_set_convert_rate()
*/
rsnd_mod_write(mod, SRC_SRCIR, 0);
if (rsnd_src_convert_rate(src))
rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
return 0;
}
static int rsnd_src_init(struct rsnd_mod *mod)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
rsnd_mod_hw_start(mod);
src->err = 0;
/*
* Initialize the operation of the SRC internal circuits
* see rsnd_src_start()
*/
rsnd_mod_write(mod, SRC_SRCIR, 1);
return 0;
}
static int rsnd_src_set_convert_timing_gen2(struct rsnd_mod *mod)
{
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_src *src = rsnd_mod_to_src(mod);
u32 convert_rate = rsnd_src_convert_rate(src);
int ret;
if (convert_rate)
ret = rsnd_adg_set_convert_clk_gen2(mod, io,
runtime->rate,
convert_rate);
else
ret = rsnd_adg_set_convert_timing_gen2(mod, io);
return ret;
}
static bool rsnd_src_error_record_gen2(struct rsnd_mod *mod)
{
u32 val = OUF_SRC(rsnd_mod_id(mod));
bool ret = false;
if ((rsnd_mod_read(mod, SCU_SYS_STATUS0) & val) ||
(rsnd_mod_read(mod, SCU_SYS_STATUS1) & val)) {
struct rsnd_src *src = rsnd_mod_to_src(mod);
src->err++;
ret = true;
}
/* clear error static */
rsnd_src_error_clear_gen2(mod);
return ret;
}
static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_src *src = rsnd_mod_to_src(mod);
struct device *dev = rsnd_priv_to_dev(priv);
int ret;
ret = rsnd_dma_init(priv,
rsnd_mod_to_dma(mod),
rsnd_info_is_playback(priv, src),
src->info->dma_id);
if (ret < 0)
dev_err(dev, "SRC DMA failed\n");
dev_dbg(dev, "%s (Gen2) is probed\n", rsnd_mod_name(mod));
return ret;
}
static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
struct rsnd_priv *priv)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
struct device *dev = rsnd_priv_to_dev(priv);
int irq = src->info->irq;
int ret;
if (irq > 0) {
/*
* IRQ is not supported on non-DT
* see
* rsnd_src_irq_enable_gen2()
*/
ret = devm_request_irq(dev, irq,
rsnd_src_interrupt_gen2,
IRQF_SHARED,
dev_name(dev), mod);
if (ret)
goto rsnd_src_probe_gen2_fail;
}
ret = rsnd_dma_init(priv,
rsnd_mod_to_dma(mod),
rsnd_info_is_playback(priv, src),
src->info->dma_id);
if (ret)
goto rsnd_src_probe_gen2_fail;
dev_dbg(dev, "%s[%d] (Gen2) is probed\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
return ret;
rsnd_src_probe_gen2_fail:
dev_err(dev, "%s[%d] (Gen2) failed\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
return ret;
}
unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
struct rsnd_dai_stream *io,
struct snd_pcm_runtime *runtime)
{
struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
struct rsnd_src *src;
unsigned int rate = 0;
if (src_mod) {
src = rsnd_mod_to_src(src_mod);
/*
* return convert rate if SRC is used,
* otherwise, return runtime->rate as usual
*/
rate = rsnd_src_convert_rate(src);
}
if (!rate)
rate = runtime->rate;
return rate;
}
static int rsnd_src_set_convert_rate_gen1(struct rsnd_mod *mod)
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
int ret;
ret = rsnd_src_set_convert_rate(mod);
if (ret < 0)
return ret;
/* Select SRC mode (fixed value) */
rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
/* Set the restriction value of the FS ratio (98%) */
rsnd_mod_write(mod, SRC_MNFSR,
rsnd_mod_read(mod, SRC_IFSVR) / 100 * 98);
/* Gen1/Gen2 are not compatible */
if (rsnd_src_convert_rate(src))
rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
/* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
return 0;
}
