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// SPDX-License-Identifier: GPL-2.0
//
// Renesas R-Car SSIU support
//
// Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
#include "rsnd.h"
#define SSIU_NAME "ssiu"
struct rsnd_ssiu {
struct rsnd_mod mod;
u32 busif_status[8]; /* for BUSIF0 - BUSIF7 */
unsigned int usrcnt;
};
#define rsnd_ssiu_nr(priv) ((priv)->ssiu_nr)
#define rsnd_mod_to_ssiu(_mod) container_of((_mod), struct rsnd_ssiu, mod)
#define for_each_rsnd_ssiu(pos, priv, i) \
for (i = 0; \
(i < rsnd_ssiu_nr(priv)) && \
((pos) = ((struct rsnd_ssiu *)(priv)->ssiu + i)); \
i++)
static u32 *rsnd_ssiu_get_status(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
enum rsnd_mod_type type)
{
struct rsnd_ssiu *ssiu = rsnd_mod_to_ssiu(mod);
int busif = rsnd_ssi_get_busif(io);
return &ssiu->busif_status[busif];
}
static int rsnd_ssiu_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
u32 multi_ssi_slaves = rsnd_ssi_multi_slaves_runtime(io);
int use_busif = rsnd_ssi_use_busif(io);
int id = rsnd_mod_id(mod);
u32 mask1, val1;
u32 mask2, val2;
/* clear status */
switch (id) {
case 0:
case 1:
case 2:
case 3:
case 4:
rsnd_mod_write(mod, SSI_SYS_STATUS0, 0xf << (id * 4));
rsnd_mod_write(mod, SSI_SYS_STATUS2, 0xf << (id * 4));
rsnd_mod_write(mod, SSI_SYS_STATUS4, 0xf << (id * 4));
rsnd_mod_write(mod, SSI_SYS_STATUS6, 0xf << (id * 4));
break;
case 9:
rsnd_mod_write(mod, SSI_SYS_STATUS1, 0xf << 4);
rsnd_mod_write(mod, SSI_SYS_STATUS3, 0xf << 4);
rsnd_mod_write(mod, SSI_SYS_STATUS5, 0xf << 4);
rsnd_mod_write(mod, SSI_SYS_STATUS7, 0xf << 4);
break;
}
/*
* SSI_MODE0
*/
rsnd_mod_bset(mod, SSI_MODE0, (1 << id), !use_busif << id);
/*
* SSI_MODE1
*/
mask1 = (1 << 4) | (1 << 20); /* mask sync bit */
mask2 = (1 << 4); /* mask sync bit */
val1 = val2 = 0;
if (id == 8) {
/*
* SSI8 pin is sharing with SSI7, nothing to do.
*/
} else if (rsnd_ssi_is_pin_sharing(io)) {
int shift = -1;
switch (id) {
case 1:
shift = 0;
break;
case 2:
shift = 2;
break;
case 4:
shift = 16;
break;
default:
return -EINVAL;
}
mask1 |= 0x3 << shift;
val1 = rsnd_rdai_is_clk_master(rdai) ?
0x2 << shift : 0x1 << shift;
} else if (multi_ssi_slaves) {
mask2 |= 0x00000007;
mask1 |= 0x0000000f;
switch (multi_ssi_slaves) {
case 0x0206: /* SSI0/1/2/9 */
val2 = (1 << 4) | /* SSI0129 sync */
(rsnd_rdai_is_clk_master(rdai) ? 0x2 : 0x1);
/* fall through */
case 0x0006: /* SSI0/1/2 */
val1 = rsnd_rdai_is_clk_master(rdai) ?
0xa : 0x5;
if (!val2) /* SSI012 sync */
val1 |= (1 << 4);
}
}
rsnd_mod_bset(mod, SSI_MODE1, mask1, val1);
rsnd_mod_bset(mod, SSI_MODE2, mask2, val2);
return 0;
}
static struct rsnd_mod_ops rsnd_ssiu_ops_gen1 = {
.name = SSIU_NAME,
.init = rsnd_ssiu_init,
.get_status = rsnd_ssiu_get_status,
};
static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssiu *ssiu = rsnd_mod_to_ssiu(mod);
int hdmi = rsnd_ssi_hdmi_port(io);
int ret;
u32 mode = 0;
ret = rsnd_ssiu_init(mod, io, priv);
if (ret < 0)
return ret;
ssiu->usrcnt++;
if (rsnd_runtime_is_tdm(io)) {
/*
* TDM Extend Mode
* see
* rsnd_ssi_config_init()
*/
mode = 0x1;
}
rsnd_mod_write(mod, SSI_MODE, mode);
if (rsnd_ssi_use_busif(io)) {
int id = rsnd_mod_id(mod);
int busif = rsnd_ssi_get_busif(io);
/*
* FIXME
*
* We can't support SSI9-4/5/6/7, because its address is
* out of calculation rule
*/
if ((id == 9) && (busif >= 4)) {
struct device *dev = rsnd_priv_to_dev(priv);
dev_err(dev, "This driver doesn't support SSI%d-%d, so far",
id, busif);
}
#define RSND_WRITE_BUSIF(i) \
rsnd_mod_write(mod, SSI_BUSIF##i##_ADINR, \
rsnd_get_adinr_bit(mod, io) | \
(rsnd_io_is_play(io) ? \
rsnd_runtime_channel_after_ctu(io) : \
rsnd_runtime_channel_original(io))); \
rsnd_mod_write(mod, SSI_BUSIF##i##_MODE, \
rsnd_get_busif_shift(io, mod) | 1); \
rsnd_mod_write(mod, SSI_BUSIF##i##_DALIGN, \
rsnd_get_dalign(mod, io))
switch (busif) {
case 0:
RSND_WRITE_BUSIF(0);
break;
case 1:
RSND_WRITE_BUSIF(1);
break;
case 2:
RSND_WRITE_BUSIF(2);
break;
case 3:
RSND_WRITE_BUSIF(3);
break;
case 4:
RSND_WRITE_BUSIF(4);
break;
case 5:
RSND_WRITE_BUSIF(5);
break;
case 6:
RSND_WRITE_BUSIF(6);
break;
case 7:
RSND_WRITE_BUSIF(7);
break;
}
}
if (hdmi) {
enum rsnd_mod_type rsnd_ssi_array[] = {
RSND_MOD_SSIM1,
RSND_MOD_SSIM2,
RSND_MOD_SSIM3,
};
struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
struct rsnd_mod *pos;
u32 val;
int i, shift;
i = rsnd_mod_id(ssi_mod);
/* output all same SSI as default */
val = i << 16 |
i << 20 |
i << 24 |
i << 28 |
i;
for_each_rsnd_mod_array(i, pos, io, rsnd_ssi_array) {
shift = (i * 4) + 16;
val = (val & ~(0xF << shift)) |
rsnd_mod_id(pos) << shift;
}
switch (hdmi) {
case RSND_SSI_HDMI_PORT0:
rsnd_mod_write(mod, HDMI0_SEL, val);
break;
case RSND_SSI_HDMI_PORT1:
rsnd_mod_write(mod, HDMI1_SEL, val);
break;
}
}
return 0;
}
static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
int busif = rsnd_ssi_get_busif(io);
if (!rsnd_ssi_use_busif(io))
return 0;
rsnd_mod_bset(mod, SSI_CTRL, 1 << (busif * 4), 1 << (busif * 4));
if (rsnd_ssi_multi_slaves_runtime(io))
rsnd_mod_write(mod, SSI_CONTROL, 0x1);
return 0;
}
static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssiu *ssiu = rsnd_mod_to_ssiu(mod);
int busif = rsnd_ssi_get_busif(io);
if (!rsnd_ssi_use_busif(io))
return 0;
rsnd_mod_bset(mod, SSI_CTRL, 1 << (busif * 4), 0);
if (--ssiu->usrcnt)
return 0;
if (rsnd_ssi_multi_slaves_runtime(io))
rsnd_mod_write(mod, SSI_CONTROL, 0);
return 0;
}
static struct rsnd_mod_ops rsnd_ssiu_ops_gen2 = {
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