/*
* Gen1
*/
static int rsnd_gen1_path_init(struct rsnd_priv *priv,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_mod *mod;
int ret;
int id;
/*
* Gen1 is created by SRU/SSI, and this SRU is base module of
* Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
*
* Easy image is..
* Gen1 SRU = Gen2 SCU + SSIU + etc
*
* Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
* using fixed path.
*
* Then, SSI id = SCU id here
*/
/* get SSI's ID */
mod = rsnd_ssi_mod_get_frm_dai(priv,
rsnd_dai_id(priv, rdai),
rsnd_dai_is_play(rdai, io));
id = rsnd_mod_id(mod);
/* SSI */
mod = rsnd_ssi_mod_get(priv, id);
ret = rsnd_dai_connect(rdai, mod, io);
if (ret < 0)
return ret;
/* SCU */
mod = rsnd_scu_mod_get(priv, id);
ret = rsnd_dai_connect(rdai, mod, io);
return ret;
}
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);
}