736 lines
15 KiB
C
736 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Renesas R-Car SRC support
|
|
//
|
|
// Copyright (C) 2013 Renesas Solutions Corp.
|
|
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
|
|
|
|
/*
|
|
* You can use Synchronous Sampling Rate Convert (if no DVC)
|
|
*
|
|
* amixer set "SRC Out Rate" on
|
|
* aplay xxx.wav &
|
|
* amixer set "SRC Out Rate" 96000 // convert rate to 96000Hz
|
|
* amixer set "SRC Out Rate" 22050 // convert rate to 22050Hz
|
|
*/
|
|
|
|
/*
|
|
* you can enable below define if you don't need
|
|
* SSI interrupt status debug message when debugging
|
|
* see rsnd_print_irq_status()
|
|
*
|
|
* #define RSND_DEBUG_NO_IRQ_STATUS 1
|
|
*/
|
|
|
|
#include "rsnd.h"
|
|
|
|
#define SRC_NAME "src"
|
|
|
|
/* SCU_SYSTEM_STATUS0/1 */
|
|
#define OUF_SRC(id) ((1 << (id + 16)) | (1 << id))
|
|
|
|
struct rsnd_src {
|
|
struct rsnd_mod mod;
|
|
struct rsnd_mod *dma;
|
|
struct rsnd_kctrl_cfg_s sen; /* sync convert enable */
|
|
struct rsnd_kctrl_cfg_s sync; /* sync convert */
|
|
int irq;
|
|
};
|
|
|
|
#define RSND_SRC_NAME_SIZE 16
|
|
|
|
#define rsnd_src_get(priv, id) ((struct rsnd_src *)(priv->src) + id)
|
|
#define rsnd_src_nr(priv) ((priv)->src_nr)
|
|
#define rsnd_src_sync_is_enabled(mod) (rsnd_mod_to_src(mod)->sen.val)
|
|
|
|
#define rsnd_mod_to_src(_mod) \
|
|
container_of((_mod), struct rsnd_src, mod)
|
|
|
|
#define for_each_rsnd_src(pos, priv, i) \
|
|
for ((i) = 0; \
|
|
((i) < rsnd_src_nr(priv)) && \
|
|
((pos) = (struct rsnd_src *)(priv)->src + i); \
|
|
i++)
|
|
|
|
|
|
/*
|
|
* image of SRC (Sampling Rate Converter)
|
|
*
|
|
* 96kHz <-> +-----+ 48kHz +-----+ 48kHz +-------+
|
|
* 48kHz <-> | SRC | <------> | SSI | <-----> | codec |
|
|
* 44.1kHz <-> +-----+ +-----+ +-------+
|
|
* ...
|
|
*
|
|
*/
|
|
|
|
static void rsnd_src_activation(struct rsnd_mod *mod)
|
|
{
|
|
rsnd_mod_write(mod, SRC_SWRSR, 0);
|
|
rsnd_mod_write(mod, SRC_SWRSR, 1);
|
|
}
|
|
|
|
static void rsnd_src_halt(struct rsnd_mod *mod)
|
|
{
|
|
rsnd_mod_write(mod, SRC_SRCIR, 1);
|
|
rsnd_mod_write(mod, SRC_SWRSR, 0);
|
|
}
|
|
|
|
static struct dma_chan *rsnd_src_dma_req(struct rsnd_dai_stream *io,
|
|
struct rsnd_mod *mod)
|
|
{
|
|
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
|
|
int is_play = rsnd_io_is_play(io);
|
|
|
|
return rsnd_dma_request_channel(rsnd_src_of_node(priv),
|
|
SRC_NAME, mod,
|
|
is_play ? "rx" : "tx");
|
|
}
|
|
|
|
static u32 rsnd_src_convert_rate(struct rsnd_dai_stream *io,
|
|
struct rsnd_mod *mod)
|
|
{
|
|
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
|
|
struct rsnd_src *src = rsnd_mod_to_src(mod);
|
|
u32 convert_rate;
|
|
|
|
if (!runtime)
|
|
return 0;
|
|
|
|
if (!rsnd_src_sync_is_enabled(mod))
|
|
return rsnd_io_converted_rate(io);
|
|
|
|
convert_rate = src->sync.val;
|
|
|
|
if (!convert_rate)
|
|
convert_rate = rsnd_io_converted_rate(io);
|
|
|
|
if (!convert_rate)
|
|
convert_rate = runtime->rate;
|
|
|
|
return convert_rate;
|
|
}
|
|
|
|
unsigned int rsnd_src_get_rate(struct rsnd_priv *priv,
|
|
struct rsnd_dai_stream *io,
|
|
int is_in)
|
|
{
|
|
struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
|
|
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
|
|
unsigned int rate = 0;
|
|
int is_play = rsnd_io_is_play(io);
|
|
|
|
/*
|
|
* Playback
|
|
* runtime_rate -> [SRC] -> convert_rate
|
|
*
|
|
* Capture
|
|
* convert_rate -> [SRC] -> runtime_rate
|
|
*/
|
|
|
|
if (is_play == is_in)
|
|
return runtime->rate;
|
|
|
|
/*
|
|
* return convert rate if SRC is used,
|
|
* otherwise, return runtime->rate as usual
|
|
*/
|
|
if (src_mod)
|
|
rate = rsnd_src_convert_rate(io, src_mod);
|
|
|
|
if (!rate)
|
|
rate = runtime->rate;
|
|
|
|
return rate;
|
|
}
|
|
|
|
static const u32 bsdsr_table_pattern1[] = {
|
|
0x01800000, /* 6 - 1/6 */
|
|
0x01000000, /* 6 - 1/4 */
|
|
0x00c00000, /* 6 - 1/3 */
|
|
0x00800000, /* 6 - 1/2 */
|
|
0x00600000, /* 6 - 2/3 */
|
|
0x00400000, /* 6 - 1 */
|
|
};
|
|
|
|
static const u32 bsdsr_table_pattern2[] = {
|
|
0x02400000, /* 6 - 1/6 */
|
|
0x01800000, /* 6 - 1/4 */
|
|
0x01200000, /* 6 - 1/3 */
|
|
0x00c00000, /* 6 - 1/2 */
|
|
0x00900000, /* 6 - 2/3 */
|
|
0x00600000, /* 6 - 1 */
|
|
};
|
|
|
|
static const u32 bsisr_table[] = {
|
|
0x00100060, /* 6 - 1/6 */
|
|
0x00100040, /* 6 - 1/4 */
|
|
0x00100030, /* 6 - 1/3 */
|
|
0x00100020, /* 6 - 1/2 */
|
|
0x00100020, /* 6 - 2/3 */
|
|
0x00100020, /* 6 - 1 */
|
|
};
|
|
|
|
static const u32 chan288888[] = {
|
|
0x00000006, /* 1 to 2 */
|
|
0x000001fe, /* 1 to 8 */
|
|
0x000001fe, /* 1 to 8 */
|
|
0x000001fe, /* 1 to 8 */
|
|
0x000001fe, /* 1 to 8 */
|
|
0x000001fe, /* 1 to 8 */
|
|
};
|
|
|
|
static const u32 chan244888[] = {
|
|
0x00000006, /* 1 to 2 */
|
|
0x0000001e, /* 1 to 4 */
|
|
0x0000001e, /* 1 to 4 */
|
|
0x000001fe, /* 1 to 8 */
|
|
0x000001fe, /* 1 to 8 */
|
|
0x000001fe, /* 1 to 8 */
|
|
};
|
|
|
|
static const u32 chan222222[] = {
|
|
0x00000006, /* 1 to 2 */
|
|
0x00000006, /* 1 to 2 */
|
|
0x00000006, /* 1 to 2 */
|
|
0x00000006, /* 1 to 2 */
|
|
0x00000006, /* 1 to 2 */
|
|
0x00000006, /* 1 to 2 */
|
|
};
|
|
|
|
static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
|
|
struct rsnd_mod *mod)
|
|
{
|
|
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
|
|
struct device *dev = rsnd_priv_to_dev(priv);
|
|
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
|
|
int is_play = rsnd_io_is_play(io);
|
|
int use_src = 0;
|
|
u32 fin, fout;
|
|
u32 ifscr, fsrate, adinr;
|
|
u32 cr, route;
|
|
u32 i_busif, o_busif, tmp;
|
|
const u32 *bsdsr_table;
|
|
const u32 *chptn;
|
|
uint ratio;
|
|
int chan;
|
|
int idx;
|
|
|
|
if (!runtime)
|
|
return;
|
|
|
|
fin = rsnd_src_get_in_rate(priv, io);
|
|
fout = rsnd_src_get_out_rate(priv, io);
|
|
|
|
chan = rsnd_runtime_channel_original(io);
|
|
|
|
/* 6 - 1/6 are very enough ratio for SRC_BSDSR */
|
|
if (fin == fout)
|
|
ratio = 0;
|
|
else if (fin > fout)
|
|
ratio = 100 * fin / fout;
|
|
else
|
|
ratio = 100 * fout / fin;
|
|
|
|
if (ratio > 600) {
|
|
dev_err(dev, "FSO/FSI ratio error\n");
|
|
return;
|
|
}
|
|
|
|
use_src = (fin != fout) | rsnd_src_sync_is_enabled(mod);
|
|
|
|
/*
|
|
* SRC_ADINR
|
|
*/
|
|
adinr = rsnd_get_adinr_bit(mod, io) | chan;
|
|
|
|
/*
|
|
* SRC_IFSCR / SRC_IFSVR
|
|
*/
|
|
ifscr = 0;
|
|
fsrate = 0;
|
|
if (use_src) {
|
|
u64 n;
|
|
|
|
ifscr = 1;
|
|
n = (u64)0x0400000 * fin;
|
|
do_div(n, fout);
|
|
fsrate = n;
|
|
}
|
|
|
|
/*
|
|
* SRC_SRCCR / SRC_ROUTE_MODE0
|
|
*/
|
|
cr = 0x00011110;
|
|
route = 0x0;
|
|
if (use_src) {
|
|
route = 0x1;
|
|
|
|
if (rsnd_src_sync_is_enabled(mod)) {
|
|
cr |= 0x1;
|
|
route |= rsnd_io_is_play(io) ?
|
|
(0x1 << 24) : (0x1 << 25);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* SRC_BSDSR / SRC_BSISR
|
|
*
|
|
* see
|
|
* Combination of Register Setting Related to
|
|
* FSO/FSI Ratio and Channel, Latency
|
|
*/
|
|
switch (rsnd_mod_id(mod)) {
|
|
case 0:
|
|
chptn = chan288888;
|
|
bsdsr_table = bsdsr_table_pattern1;
|
|
break;
|
|
case 1:
|
|
case 3:
|
|
case 4:
|
|
chptn = chan244888;
|
|
bsdsr_table = bsdsr_table_pattern1;
|
|
break;
|
|
case 2:
|
|
case 9:
|
|
chptn = chan222222;
|
|
bsdsr_table = bsdsr_table_pattern1;
|
|
break;
|
|
case 5:
|
|
case 6:
|
|
case 7:
|
|
case 8:
|
|
chptn = chan222222;
|
|
bsdsr_table = bsdsr_table_pattern2;
|
|
break;
|
|
default:
|
|
goto convert_rate_err;
|
|
}
|
|
|
|
/*
|
|
* E3 need to overwrite
|
|
*/
|
|
if (rsnd_is_e3(priv))
|
|
switch (rsnd_mod_id(mod)) {
|
|
case 0:
|
|
case 4:
|
|
chptn = chan222222;
|
|
}
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(chan222222); idx++)
|
|
if (chptn[idx] & (1 << chan))
|
|
break;
|
|
|
|
if (chan > 8 ||
|
|
idx >= ARRAY_SIZE(chan222222))
|
|
goto convert_rate_err;
|
|
|
|
/* BUSIF_MODE */
|
|
tmp = rsnd_get_busif_shift(io, mod);
|
|
i_busif = ( is_play ? tmp : 0) | 1;
|
|
o_busif = (!is_play ? tmp : 0) | 1;
|
|
|
|
rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);
|
|
|
|
rsnd_mod_write(mod, SRC_SRCIR, 1); /* initialize */
|
|
rsnd_mod_write(mod, SRC_ADINR, adinr);
|
|
rsnd_mod_write(mod, SRC_IFSCR, ifscr);
|
|
rsnd_mod_write(mod, SRC_IFSVR, fsrate);
|
|
rsnd_mod_write(mod, SRC_SRCCR, cr);
|
|
rsnd_mod_write(mod, SRC_BSDSR, bsdsr_table[idx]);
|
|
rsnd_mod_write(mod, SRC_BSISR, bsisr_table[idx]);
|
|
rsnd_mod_write(mod, SRC_SRCIR, 0); /* cancel initialize */
|
|
|
|
rsnd_mod_write(mod, SRC_I_BUSIF_MODE, i_busif);
|
|
rsnd_mod_write(mod, SRC_O_BUSIF_MODE, o_busif);
|
|
|
|
rsnd_mod_write(mod, SRC_BUSIF_DALIGN, rsnd_get_dalign(mod, io));
|
|
|
|
rsnd_adg_set_src_timesel_gen2(mod, io, fin, fout);
|
|
|
|
return;
|
|
|
|
convert_rate_err:
|
|
dev_err(dev, "unknown BSDSR/BSDIR settings\n");
|
|
}
|
|
|
|
static int rsnd_src_irq(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_priv *priv,
|
|
int enable)
|
|
{
|
|
struct rsnd_src *src = rsnd_mod_to_src(mod);
|
|
u32 sys_int_val, int_val, sys_int_mask;
|
|
int irq = src->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_()
|
|
*/
|
|
if ((irq <= 0) || !enable) {
|
|
sys_int_val = 0;
|
|
int_val = 0;
|
|
}
|
|
|
|
/*
|
|
* WORKAROUND
|
|
*
|
|
* ignore over flow error when rsnd_src_sync_is_enabled()
|
|
*/
|
|
if (rsnd_src_sync_is_enabled(mod))
|
|
sys_int_val = sys_int_val & 0xffff;
|
|
|
|
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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void rsnd_src_status_clear(struct rsnd_mod *mod)
|
|
{
|
|
u32 val = OUF_SRC(rsnd_mod_id(mod));
|
|
|
|
rsnd_mod_write(mod, SCU_SYS_STATUS0, val);
|
|
rsnd_mod_write(mod, SCU_SYS_STATUS1, val);
|
|
}
|
|
|
|
static bool rsnd_src_error_occurred(struct rsnd_mod *mod)
|
|
{
|
|
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
|
|
struct device *dev = rsnd_priv_to_dev(priv);
|
|
u32 val0, val1;
|
|
u32 status0, status1;
|
|
bool ret = false;
|
|
|
|
val0 = val1 = OUF_SRC(rsnd_mod_id(mod));
|
|
|
|
/*
|
|
* WORKAROUND
|
|
*
|
|
* ignore over flow error when rsnd_src_sync_is_enabled()
|
|
*/
|
|
if (rsnd_src_sync_is_enabled(mod))
|
|
val0 = val0 & 0xffff;
|
|
|
|
status0 = rsnd_mod_read(mod, SCU_SYS_STATUS0);
|
|
status1 = rsnd_mod_read(mod, SCU_SYS_STATUS1);
|
|
if ((status0 & val0) || (status1 & val1)) {
|
|
rsnd_print_irq_status(dev, "%s err status : 0x%08x, 0x%08x\n",
|
|
rsnd_mod_name(mod), status0, status1);
|
|
|
|
ret = true;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rsnd_src_start(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_priv *priv)
|
|
{
|
|
u32 val;
|
|
|
|
/*
|
|
* WORKAROUND
|
|
*
|
|
* Enable SRC output if you want to use sync convert together with DVC
|
|
*/
|
|
val = (rsnd_io_to_mod_dvc(io) && !rsnd_src_sync_is_enabled(mod)) ?
|
|
0x01 : 0x11;
|
|
|
|
rsnd_mod_write(mod, SRC_CTRL, val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rsnd_src_stop(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_priv *priv)
|
|
{
|
|
rsnd_mod_write(mod, SRC_CTRL, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rsnd_src_init(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_priv *priv)
|
|
{
|
|
struct rsnd_src *src = rsnd_mod_to_src(mod);
|
|
int ret;
|
|
|
|
/* reset sync convert_rate */
|
|
src->sync.val = 0;
|
|
|
|
ret = rsnd_mod_power_on(mod);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
rsnd_src_activation(mod);
|
|
|
|
rsnd_src_set_convert_rate(io, mod);
|
|
|
|
rsnd_src_status_clear(mod);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rsnd_src_quit(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_priv *priv)
|
|
{
|
|
struct rsnd_src *src = rsnd_mod_to_src(mod);
|
|
|
|
rsnd_src_halt(mod);
|
|
|
|
rsnd_mod_power_off(mod);
|
|
|
|
/* reset sync convert_rate */
|
|
src->sync.val = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __rsnd_src_interrupt(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io)
|
|
{
|
|
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
|
|
bool stop = false;
|
|
|
|
spin_lock(&priv->lock);
|
|
|
|
/* ignore all cases if not working */
|
|
if (!rsnd_io_is_working(io))
|
|
goto rsnd_src_interrupt_out;
|
|
|
|
if (rsnd_src_error_occurred(mod))
|
|
stop = true;
|
|
|
|
rsnd_src_status_clear(mod);
|
|
rsnd_src_interrupt_out:
|
|
|
|
spin_unlock(&priv->lock);
|
|
|
|
if (stop)
|
|
snd_pcm_stop_xrun(io->substream);
|
|
}
|
|
|
|
static irqreturn_t rsnd_src_interrupt(int irq, void *data)
|
|
{
|
|
struct rsnd_mod *mod = data;
|
|
|
|
rsnd_mod_interrupt(mod, __rsnd_src_interrupt);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int rsnd_src_probe_(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_priv *priv)
|
|
{
|
|
struct rsnd_src *src = rsnd_mod_to_src(mod);
|
|
struct device *dev = rsnd_priv_to_dev(priv);
|
|
int irq = src->irq;
|
|
int ret;
|
|
|
|
if (irq > 0) {
|
|
/*
|
|
* IRQ is not supported on non-DT
|
|
* see
|
|
* rsnd_src_irq()
|
|
*/
|
|
ret = devm_request_irq(dev, irq,
|
|
rsnd_src_interrupt,
|
|
IRQF_SHARED,
|
|
dev_name(dev), mod);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = rsnd_dma_attach(io, mod, &src->dma);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rsnd_src_pcm_new(struct rsnd_mod *mod,
|
|
struct rsnd_dai_stream *io,
|
|
struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
struct rsnd_src *src = rsnd_mod_to_src(mod);
|
|
int ret;
|
|
|
|
/*
|
|
* enable SRC sync convert if possible
|
|
*/
|
|
|
|
/*
|
|
* It can't use SRC Synchronous convert
|
|
* when Capture if it uses CMD
|
|
*/
|
|
if (rsnd_io_to_mod_cmd(io) && !rsnd_io_is_play(io))
|
|
return 0;
|
|
|
|
/*
|
|
* enable sync convert
|
|
*/
|
|
ret = rsnd_kctrl_new_s(mod, io, rtd,
|
|
rsnd_io_is_play(io) ?
|
|
"SRC Out Rate Switch" :
|
|
"SRC In Rate Switch",
|
|
rsnd_kctrl_accept_anytime,
|
|
rsnd_src_set_convert_rate,
|
|
&src->sen, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rsnd_kctrl_new_s(mod, io, rtd,
|
|
rsnd_io_is_play(io) ?
|
|
"SRC Out Rate" :
|
|
"SRC In Rate",
|
|
rsnd_kctrl_accept_runtime,
|
|
rsnd_src_set_convert_rate,
|
|
&src->sync, 192000);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static void rsnd_src_debug_info(struct seq_file *m,
|
|
struct rsnd_dai_stream *io,
|
|
struct rsnd_mod *mod)
|
|
{
|
|
rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
|
|
rsnd_mod_id(mod) * 0x20, 0x20);
|
|
seq_puts(m, "\n");
|
|
rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
|
|
0x1c0, 0x20);
|
|
seq_puts(m, "\n");
|
|
rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
|
|
0x200 + rsnd_mod_id(mod) * 0x40, 0x40);
|
|
}
|
|
#define DEBUG_INFO .debug_info = rsnd_src_debug_info
|
|
#else
|
|
#define DEBUG_INFO
|
|
#endif
|
|
|
|
static struct rsnd_mod_ops rsnd_src_ops = {
|
|
.name = SRC_NAME,
|
|
.dma_req = rsnd_src_dma_req,
|
|
.probe = rsnd_src_probe_,
|
|
.init = rsnd_src_init,
|
|
.quit = rsnd_src_quit,
|
|
.start = rsnd_src_start,
|
|
.stop = rsnd_src_stop,
|
|
.irq = rsnd_src_irq,
|
|
.pcm_new = rsnd_src_pcm_new,
|
|
.get_status = rsnd_mod_get_status,
|
|
DEBUG_INFO
|
|
};
|
|
|
|
struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id)
|
|
{
|
|
if (WARN_ON(id < 0 || id >= rsnd_src_nr(priv)))
|
|
id = 0;
|
|
|
|
return rsnd_mod_get(rsnd_src_get(priv, id));
|
|
}
|
|
|
|
int rsnd_src_probe(struct rsnd_priv *priv)
|
|
{
|
|
struct device_node *node;
|
|
struct device_node *np;
|
|
struct device *dev = rsnd_priv_to_dev(priv);
|
|
struct rsnd_src *src;
|
|
struct clk *clk;
|
|
char name[RSND_SRC_NAME_SIZE];
|
|
int i, nr, ret;
|
|
|
|
/* This driver doesn't support Gen1 at this point */
|
|
if (rsnd_is_gen1(priv))
|
|
return 0;
|
|
|
|
node = rsnd_src_of_node(priv);
|
|
if (!node)
|
|
return 0; /* not used is not error */
|
|
|
|
nr = rsnd_node_count(priv, node, SRC_NAME);
|
|
if (!nr) {
|
|
ret = -EINVAL;
|
|
goto rsnd_src_probe_done;
|
|
}
|
|
|
|
src = devm_kcalloc(dev, nr, sizeof(*src), GFP_KERNEL);
|
|
if (!src) {
|
|
ret = -ENOMEM;
|
|
goto rsnd_src_probe_done;
|
|
}
|
|
|
|
priv->src_nr = nr;
|
|
priv->src = src;
|
|
|
|
i = 0;
|
|
for_each_child_of_node(node, np) {
|
|
if (!of_device_is_available(np))
|
|
goto skip;
|
|
|
|
i = rsnd_node_fixed_index(dev, np, SRC_NAME, i);
|
|
if (i < 0) {
|
|
ret = -EINVAL;
|
|
of_node_put(np);
|
|
goto rsnd_src_probe_done;
|
|
}
|
|
|
|
src = rsnd_src_get(priv, i);
|
|
|
|
snprintf(name, RSND_SRC_NAME_SIZE, "%s.%d",
|
|
SRC_NAME, i);
|
|
|
|
src->irq = irq_of_parse_and_map(np, 0);
|
|
if (!src->irq) {
|
|
ret = -EINVAL;
|
|
of_node_put(np);
|
|
goto rsnd_src_probe_done;
|
|
}
|
|
|
|
clk = devm_clk_get(dev, name);
|
|
if (IS_ERR(clk)) {
|
|
ret = PTR_ERR(clk);
|
|
of_node_put(np);
|
|
goto rsnd_src_probe_done;
|
|
}
|
|
|
|
ret = rsnd_mod_init(priv, rsnd_mod_get(src),
|
|
&rsnd_src_ops, clk, RSND_MOD_SRC, i);
|
|
if (ret) {
|
|
of_node_put(np);
|
|
goto rsnd_src_probe_done;
|
|
}
|
|
|
|
skip:
|
|
i++;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
rsnd_src_probe_done:
|
|
of_node_put(node);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void rsnd_src_remove(struct rsnd_priv *priv)
|
|
{
|
|
struct rsnd_src *src;
|
|
int i;
|
|
|
|
for_each_rsnd_src(src, priv, i) {
|
|
rsnd_mod_quit(rsnd_mod_get(src));
|
|
}
|
|
}
|