int rsnd_ssi_use_busif(struct rsnd_mod *mod)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
int use_busif = 0;
if (!rsnd_ssi_is_dma_mode(mod))
return 0;
if (!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_NO_BUSIF))
use_busif = 1;
if (rsnd_io_to_mod_src(io))
use_busif = 1;
return use_busif;
}
/*
* ssi mod function
*/
struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv,
int dai_id, int is_play)
{
struct rsnd_ssi *ssi;
int i, has_play;
is_play = !!is_play;
for_each_rsnd_ssi(ssi, priv, i) {
if (rsnd_ssi_dai_id(ssi) != dai_id)
continue;
has_play = !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY);
if (is_play == has_play)
return &ssi->mod;
}
return NULL;
}
int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE);
}
int rsnd_ssi_probe(struct platform_device *pdev,
struct rcar_snd_info *info,
struct rsnd_priv *priv)
{
struct rsnd_ssi_platform_info *pinfo;
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mod_ops *ops;
struct clk *clk;
struct rsnd_ssiu *ssiu;
struct rsnd_ssi *ssi;
char name[RSND_SSI_NAME_SIZE];
int i, nr, ret;
/*
* init SSI
*/
nr = info->ssi_info_nr;
ssiu = devm_kzalloc(dev, sizeof(*ssiu) + (sizeof(*ssi) * nr),
GFP_KERNEL);
if (!ssiu) {
dev_err(dev, "SSI allocate failed\n");
return -ENOMEM;
}
priv->ssiu = ssiu;
ssiu->ssi = (struct rsnd_ssi *)(ssiu + 1);
ssiu->ssi_nr = nr;
for_each_rsnd_ssi(ssi, priv, i) {
pinfo = &info->ssi_info[i];
snprintf(name, RSND_SSI_NAME_SIZE, "ssi.%d", i);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk))
return PTR_ERR(clk);
ssi->info = pinfo;
ssi->clk = clk;
ops = &rsnd_ssi_non_ops;
/*
* SSI DMA case
*/
if (pinfo->dma_id > 0) {
ret = rsnd_dma_init(
priv, rsnd_mod_to_dma(&ssi->mod),
(rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY),
pinfo->dma_id,
rsnd_ssi_dma_inquiry,
rsnd_ssi_dma_complete);
if (ret < 0)
dev_info(dev, "SSI DMA failed. try PIO transter\n");
else
ops = &rsnd_ssi_dma_ops;
dev_dbg(dev, "SSI%d use DMA transfer\n", i);
}
/*
* SSI PIO case
*/
if (!rsnd_ssi_dma_available(ssi) &&
rsnd_ssi_pio_available(ssi)) {
ret = devm_request_irq(dev, pinfo->pio_irq,
&rsnd_ssi_pio_interrupt,
IRQF_SHARED,
dev_name(dev), ssi);
if (ret) {
dev_err(dev, "SSI request interrupt failed\n");
return ret;
}
ops = &rsnd_ssi_pio_ops;
dev_dbg(dev, "SSI%d use PIO transfer\n", i);
}
rsnd_mod_init(priv, &ssi->mod, ops, i);
}
static void rsnd_ssi_mode_set(struct rsnd_priv *priv,
struct rsnd_dai *rdai,
struct rsnd_ssi *ssi)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mod *scu;
struct rsnd_ssiu *ssiu = rsnd_ssi_to_ssiu(ssi);
int id = rsnd_mod_id(&ssi->mod);
u32 flags;
u32 val;
scu = rsnd_scu_mod_get(priv, rsnd_mod_id(&ssi->mod));
/*
* SSI_MODE0
*/
/* see also BUSIF_MODE */
if (rsnd_scu_hpbif_is_enable(scu)) {
ssiu->ssi_mode0 &= ~(1 << id);
dev_dbg(dev, "SSI%d uses DEPENDENT mode\n", id);
} else {
ssiu->ssi_mode0 |= (1 << id);
dev_dbg(dev, "SSI%d uses INDEPENDENT mode\n", id);
}
/*
* SSI_MODE1
*/
#define ssi_parent_set(p, sync, adg, ext) \
do { \
ssi->parent = ssiu->ssi + p; \
if (rsnd_rdai_is_clk_master(rdai)) \
val = adg; \
else \
val = ext; \
if (flags & RSND_SSI_SYNC) \
val |= sync; \
} while (0)
flags = rsnd_ssi_mode_flags(ssi);
if (flags & RSND_SSI_CLK_PIN_SHARE) {
val = 0;
switch (id) {
case 1:
ssi_parent_set(0, (1 << 4), (0x2 << 0), (0x1 << 0));
break;
case 2:
ssi_parent_set(0, (1 << 4), (0x2 << 2), (0x1 << 2));
break;
case 4:
ssi_parent_set(3, (1 << 20), (0x2 << 16), (0x1 << 16));
break;
case 8:
ssi_parent_set(7, 0, 0, 0);
break;
}
ssiu->ssi_mode1 |= val;
}
rsnd_mod_write(&ssi->mod, SSI_MODE0, ssiu->ssi_mode0);
rsnd_mod_write(&ssi->mod, SSI_MODE1, ssiu->ssi_mode1);
}
int rsnd_ssi_is_play(struct rsnd_mod *mod)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY);
}
