static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod);
struct device *dev = rsnd_priv_to_dev(priv);
u32 cr;
if (0 == ssi->usrcnt) {
clk_enable(ssi->clk);
if (rsnd_rdai_is_clk_master(rdai)) {
if (rsnd_ssi_clk_from_parent(ssi))
rsnd_ssi_hw_start(ssi->parent, rdai, io);
else
rsnd_ssi_master_clk_start(ssi, io);
}
}
cr = ssi->cr_own |
ssi->cr_clk |
ssi->cr_etc |
EN;
rsnd_mod_write(&ssi->mod, SSICR, cr);
ssi->usrcnt++;
dev_dbg(dev, "ssi%d hw started\n", rsnd_mod_id(&ssi->mod));
}
static int rsnd_ssi_start(struct rsnd_mod *mod,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
rsnd_src_ssiu_start(mod, rsnd_ssi_use_busif(mod));
rsnd_ssi_hw_start(ssi, io);
rsnd_src_ssi_irq_enable(mod);
return 0;
}
static int rsnd_ssi_pio_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
/* enable PIO IRQ */
ssi->cr_etc = UIEN | OIEN | DIEN;
rsnd_src_enable_ssi_irq(mod, rdai, io);
rsnd_ssi_hw_start(ssi, rdai, io);
return 0;
}
static int rsnd_ssi_pio_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct device *dev = rsnd_priv_to_dev(priv);
/* enable PIO IRQ */
ssi->cr_etc = UIEN | OIEN | DIEN;
rsnd_ssi_hw_start(ssi, rdai, io);
dev_dbg(dev, "%s.%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod));
return 0;
}
static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_io_to_priv(io);
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct device *dev = rsnd_priv_to_dev(priv);
u32 cr_mode;
u32 cr;
if (0 == ssi->usrcnt) {
rsnd_mod_hw_start(&ssi->mod);
if (rsnd_rdai_is_clk_master(rdai)) {
if (rsnd_ssi_clk_from_parent(ssi))
rsnd_ssi_hw_start(ssi->parent, io);
else
rsnd_ssi_master_clk_start(ssi, io);
}
}
cr_mode = rsnd_ssi_is_dma_mode(&ssi->mod) ?
DMEN : /* DMA : enable DMA */
DIEN; /* PIO : enable Data interrupt */
cr = ssi->cr_own |
ssi->cr_clk |
cr_mode |
UIEN | OIEN | EN;
rsnd_mod_write(&ssi->mod, SSICR, cr);
/* enable WS continue */
if (rsnd_rdai_is_clk_master(rdai))
rsnd_mod_write(&ssi->mod, SSIWSR, CONT);
/* clear error status */
rsnd_mod_write(&ssi->mod, SSISR, 0);
ssi->usrcnt++;
dev_dbg(dev, "%s[%d] hw started\n",
rsnd_mod_name(&ssi->mod), rsnd_mod_id(&ssi->mod));
}
static int rsnd_ssi_dma_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod);
/* enable DMA transfer */
ssi->cr_etc = DMEN;
rsnd_dma_start(dma);
rsnd_ssi_hw_start(ssi, ssi->rdai, io);
/* enable WS continue */
if (rsnd_dai_is_clk_master(rdai))
rsnd_mod_write(&ssi->mod, SSIWSR, CONT);
return 0;
}
static int rsnd_ssi_pio_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct device *dev = rsnd_priv_to_dev(priv);
/* enable PIO IRQ */
ssi->cr_etc = UIEN | OIEN | DIEN;
/* enable PIO interrupt if gen2 */
if (rsnd_is_gen2(priv))
rsnd_mod_write(&ssi->mod, INT_ENABLE, 0x0f000000);
rsnd_ssi_hw_start(ssi, rdai, io);
dev_dbg(dev, "%s.%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod));
return 0;
}