Release 4.17 sound/soc/sh/rcar/ssi.c
/*
* Renesas R-Car SSIU/SSI support
*
* Copyright (C) 2013 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* Based on fsi.c
* Kuninori Morimoto <morimoto.kuninori@renesas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* you can enable below define if you don't need
* SSI interrupt status debug message when debugging
* see rsnd_dbg_irq_status()
*
* #define RSND_DEBUG_NO_IRQ_STATUS 1
*/
#include <sound/simple_card_utils.h>
#include <linux/delay.h>
#include "rsnd.h"
#define RSND_SSI_NAME_SIZE 16
/*
* SSICR
*/
#define FORCE (1 << 31)
/* Fixed */
#define DMEN (1 << 28)
/* DMA Enable */
#define UIEN (1 << 27)
/* Underflow Interrupt Enable */
#define OIEN (1 << 26)
/* Overflow Interrupt Enable */
#define IIEN (1 << 25)
/* Idle Mode Interrupt Enable */
#define DIEN (1 << 24)
/* Data Interrupt Enable */
#define CHNL_4 (1 << 22)
/* Channels */
#define CHNL_6 (2 << 22)
/* Channels */
#define CHNL_8 (3 << 22)
/* Channels */
#define DWL_8 (0 << 19)
/* Data Word Length */
#define DWL_16 (1 << 19)
/* Data Word Length */
#define DWL_18 (2 << 19)
/* Data Word Length */
#define DWL_20 (3 << 19)
/* Data Word Length */
#define DWL_22 (4 << 19)
/* Data Word Length */
#define DWL_24 (5 << 19)
/* Data Word Length */
#define DWL_32 (6 << 19)
/* Data Word Length */
#define SWL_32 (3 << 16)
/* R/W System Word Length */
#define SCKD (1 << 15)
/* Serial Bit Clock Direction */
#define SWSD (1 << 14)
/* Serial WS Direction */
#define SCKP (1 << 13)
/* Serial Bit Clock Polarity */
#define SWSP (1 << 12)
/* Serial WS Polarity */
#define SDTA (1 << 10)
/* Serial Data Alignment */
#define PDTA (1 << 9)
/* Parallel Data Alignment */
#define DEL (1 << 8)
/* Serial Data Delay */
#define CKDV(v) (v << 4)
/* Serial Clock Division Ratio */
#define TRMD (1 << 1)
/* Transmit/Receive Mode Select */
#define EN (1 << 0)
/* SSI Module Enable */
/*
* SSISR
*/
#define UIRQ (1 << 27)
/* Underflow Error Interrupt Status */
#define OIRQ (1 << 26)
/* Overflow Error Interrupt Status */
#define IIRQ (1 << 25)
/* Idle Mode Interrupt Status */
#define DIRQ (1 << 24)
/* Data Interrupt Status Flag */
/*
* SSIWSR
*/
#define CONT (1 << 8)
/* WS Continue Function */
#define WS_MODE (1 << 0)
/* WS Mode */
#define SSI_NAME "ssi"
struct rsnd_ssi {
struct rsnd_mod mod;
struct rsnd_mod *dma;
u32 flags;
u32 cr_own;
u32 cr_clk;
u32 cr_mode;
u32 cr_en;
u32 wsr;
int chan;
int rate;
int irq;
unsigned int usrcnt;
/* for PIO */
int byte_pos;
int byte_per_period;
int next_period_byte;
};
/* flags */
#define RSND_SSI_CLK_PIN_SHARE (1 << 0)
#define RSND_SSI_NO_BUSIF (1 << 1)
/* SSI+DMA without BUSIF */
#define RSND_SSI_HDMI0 (1 << 2)
/* for HDMI0 */
#define RSND_SSI_HDMI1 (1 << 3)
/* for HDMI1 */
#define RSND_SSI_PROBED (1 << 4)
#define for_each_rsnd_ssi(pos, priv, i) \
for (i = 0; \
(i < rsnd_ssi_nr(priv)) && \
((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \
i++)
#define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id)
#define rsnd_ssi_nr(priv) ((priv)->ssi_nr)
#define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
#define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io))
#define rsnd_ssi_is_multi_slave(mod, io) \
(rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod)))
#define rsnd_ssi_is_run_mods(mod, io) \
(rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod)))
#define rsnd_ssi_can_output_clk(mod) (!__rsnd_ssi_is_pin_sharing(mod))
int rsnd_ssi_hdmi_port(struct rsnd_dai_stream *io)
{
struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
if (rsnd_flags_has(ssi, RSND_SSI_HDMI0))
return RSND_SSI_HDMI_PORT0;
if (rsnd_flags_has(ssi, RSND_SSI_HDMI1))
return RSND_SSI_HDMI_PORT1;
return 0;
}
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int rsnd_ssi_use_busif(struct rsnd_dai_stream *io)
{
struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int use_busif = 0;
if (!rsnd_ssi_is_dma_mode(mod))
return 0;
if (!(rsnd_flags_has(ssi, RSND_SSI_NO_BUSIF)))
use_busif = 1;
if (rsnd_io_to_mod_src(io))
use_busif = 1;
return use_busif;
}
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static void rsnd_ssi_status_clear(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, SSISR, 0);
}
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static u32 rsnd_ssi_status_get(struct rsnd_mod *mod)
{
return rsnd_mod_read(mod, SSISR);
}
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static void rsnd_ssi_status_check(struct rsnd_mod *mod,
u32 bit)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
u32 status;
int i;
for (i = 0; i < 1024; i++) {
status = rsnd_ssi_status_get(mod);
if (status & bit)
return;
udelay(50);
}
dev_warn(dev, "%s[%d] status check failed\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
}
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static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io)
{
struct rsnd_mod *mod;
enum rsnd_mod_type types[] = {
RSND_MOD_SSIM1,
RSND_MOD_SSIM2,
RSND_MOD_SSIM3,
};
int i, mask;
mask = 0;
for (i = 0; i < ARRAY_SIZE(types); i++) {
mod = rsnd_io_to_mod(io, types[i]);
if (!mod)
continue;
mask |= 1 << rsnd_mod_id(mod);
}
return mask;
}
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static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io)
{
struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
u32 mods;
mods = rsnd_ssi_multi_slaves_runtime(io) |
1 << rsnd_mod_id(ssi_mod);
if (ssi_parent_mod)
mods |= 1 << rsnd_mod_id(ssi_parent_mod);
return mods;
}
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u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io)
{
if (rsnd_runtime_is_ssi_multi(io))
return rsnd_ssi_multi_slaves(io);
return 0;
}
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unsigned int rsnd_ssi_clk_query(struct rsnd_priv *priv,
int param1, int param2, int *idx)
{
int ssi_clk_mul_table[] = {
1, 2, 4, 8, 16, 6, 12,
};
int j, ret;
unsigned int main_rate;
for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) {
/*
* It will set SSIWSR.CONT here, but SSICR.CKDV = 000
* with it is not allowed. (SSIWSR.WS_MODE with
* SSICR.CKDV = 000 is not allowed either).
* Skip it. See SSICR.CKDV
*/
if (j == 0)
continue;
/*
* this driver is assuming that
* system word is 32bit x chan
* see rsnd_ssi_init()
*/
main_rate = 32 * param1 * param2 * ssi_clk_mul_table[j];
ret = rsnd_adg_clk_query(priv, main_rate);
if (ret < 0)
continue;
if (idx)
*idx = j;
return main_rate;
}
return 0;
}
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static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_io_to_priv(io);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int chan = rsnd_runtime_channel_for_ssi(io);
int idx, ret;
unsigned int main_rate;
unsigned int rate = rsnd_io_is_play(io) ?
rsnd_src_get_out_rate(priv, io) :
rsnd_src_get_in_rate(priv, io);
if (!rsnd_rdai_is_clk_master(rdai))
return 0;
if (!rsnd_ssi_can_output_clk(mod))
return 0;
if (rsnd_ssi_is_multi_slave(mod, io))
return 0;
if (ssi->usrcnt > 1) {
if (ssi->rate != rate) {
dev_err(dev, "SSI parent/child should use same rate\n");
return -EINVAL;
}
return 0;
}
main_rate = rsnd_ssi_clk_query(priv, rate, chan, &idx);
if (!main_rate) {
dev_err(dev, "unsupported clock rate\n");
return -EIO;
}
ret = rsnd_adg_ssi_clk_try_start(mod, main_rate);
if (ret < 0)
return ret;
/*
* SSI clock will be output contiguously
* by below settings.
* This means, rsnd_ssi_master_clk_start()
* and rsnd_ssi_register_setup() are necessary
* for SSI parent
*
* SSICR : FORCE, SCKD, SWSD
* SSIWSR : CONT
*/
ssi->cr_clk = FORCE | SWL_32 | SCKD | SWSD | CKDV(idx);
ssi->wsr = CONT;
ssi->rate = rate;
dev_dbg(dev, "%s[%d] outputs %u Hz\n",
rsnd_mod_name(mod),
rsnd_mod_id(mod), rate);
return 0;
}
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| Total | 266 | 100.00% | 19 | 100.00% |
static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
if (!rsnd_rdai_is_clk_master(rdai))
return;
if (!rsnd_ssi_can_output_clk(mod))
return;
if (ssi->usrcnt > 1)
return;
ssi->cr_clk = 0;
ssi->rate = 0;
rsnd_adg_ssi_clk_stop(mod);
}
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static void rsnd_ssi_config_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
u32 cr_own;
u32 cr_mode;
u32 wsr;
int is_tdm;
if (rsnd_ssi_is_parent(mod, io))
return;
is_tdm = rsnd_runtime_is_ssi_tdm(io);
/*
* always use 32bit system word.
* see also rsnd_ssi_master_clk_enable()
*/
cr_own = FORCE | SWL_32;
if (rdai->bit_clk_inv)
cr_own |= SCKP;
if (rdai->frm_clk_inv ^ is_tdm)
cr_own |= SWSP;
if (rdai->data_alignment)
cr_own |= SDTA;
if (rdai->sys_delay)
cr_own |= DEL;
if (rsnd_io_is_play(io))
cr_own |= TRMD;
switch (snd_pcm_format_width(runtime->format)) {
case 16:
cr_own |= DWL_16;
break;
case 24:
cr_own |= DWL_24;
break;
}
if (rsnd_ssi_is_dma_mode(mod)) {
cr_mode = UIEN | OIEN | /* over/under run */
DMEN; /* DMA : enable DMA */
} else {
cr_mode = DIEN; /* PIO : enable Data interrupt */
}
/*
* TDM Extend Mode
* see
* rsnd_ssiu_init_gen2()
*/
wsr = ssi->wsr;
if (is_tdm) {
wsr |= WS_MODE;
cr_own |= CHNL_8;
}
ssi->cr_own = cr_own;
ssi->cr_mode = cr_mode;
ssi->wsr = wsr;
}
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| Total | 228 | 100.00% | 14 | 100.00% |
static void rsnd_ssi_register_setup(struct rsnd_mod *mod)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
rsnd_mod_write(mod, SSIWSR, ssi->wsr);
rsnd_mod_write(mod, SSICR, ssi->cr_own |
ssi->cr_clk |
ssi->cr_mode |
ssi->cr_en);
}
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| Total | 55 | 100.00% | 3 | 100.00% |
/*
* SSI mod common functions
*/
static int rsnd_ssi_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int ret;
if (!rsnd_ssi_is_run_mods(mod, io))
return 0;
ssi->usrcnt++;
rsnd_mod_power_on(mod);
ret = rsnd_ssi_master_clk_start(mod, io);
if (ret < 0)
return ret;
rsnd_ssi_config_init(mod, io);
rsnd_ssi_register_setup(mod);
/* clear error status */
rsnd_ssi_status_clear(mod);
return 0;
}
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static int rsnd_ssi_quit(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct device *dev = rsnd_priv_to_dev(priv);
if (!rsnd_ssi_is_run_mods(mod, io))
return 0;
if (!ssi->usrcnt) {
dev_err(dev, "%s[%d] usrcnt error\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
return -EIO;
}
if (!rsnd_ssi_is_parent(mod, io))
ssi->cr_own = 0;
rsnd_ssi_master_clk_stop(mod, io);
rsnd_mod_power_off(mod);
ssi->usrcnt--;
return 0;
}
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static int rsnd_ssi_hw_params(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int chan = params_channels(params);
/*
* snd_pcm_ops::hw_params will be called *before*
* snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0
* in 1st call.
*/
if (ssi->usrcnt) {
/*
* Already working.
* It will happen if SSI has parent/child connection.
* it is error if child <-> parent SSI uses
* different channels.
*/
if (ssi->chan != chan)
return -EIO;
}
ssi->chan = chan;
return 0;
}
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| Total | 75 | 100.00% | 3 | 100.00% |
static int rsnd_ssi_start(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
if (!rsnd_ssi_is_run_mods(mod, io))
return 0;
/*
* EN will be set via SSIU :: SSI_CONTROL
* if Multi channel mode
*/
if (rsnd_ssi_multi_slaves_runtime(io))
return 0;
/*
* EN is for data output.
* SSI parent EN is not needed.
*/
if (rsnd_ssi_is_parent(mod, io))
return 0;
ssi->cr_en = EN;
rsnd_mod_write(mod, SSICR, ssi->cr_own |
ssi->cr_clk |
ssi->cr_mode |
ssi->cr_en);
return 0;
}
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| Total | 100 | 100.00% | 8 | 100.00% |
static int rsnd_ssi_stop(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
u32 cr;
if (!rsnd_ssi_is_run_mods(mod, io))
return 0;
if (rsnd_ssi_is_parent(mod, io))
return 0;
cr = ssi->cr_own |
ssi->cr_clk;
/*
* disable all IRQ,
* Playback: Wait all data was sent
* Capture: It might not receave data. Do nothing
*/
if (rsnd_io_is_play(io)) {
rsnd_mod_write(mod, SSICR, cr | EN);
rsnd_ssi_status_check(mod, DIRQ);
}
/*
* disable SSI,
* and, wait idle state
*/
rsnd_mod_write(mod, SSICR, cr); /* disabled all */
rsnd_ssi_status_check(mod, IIRQ);
ssi->cr_en = 0;
return 0;
}
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static int rsnd_ssi_irq(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv,
int enable)
{
u32 val = 0;
if (rsnd_is_gen1(priv))
return 0;
if (rsnd_ssi_is_parent(mod, io))
return 0;
if (!rsnd_ssi_is_run_mods(mod, io))
return 0;
if (enable)
val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000;
rsnd_mod_write(mod, SSI_INT_ENABLE, val);
return 0;
}
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static bool rsnd_ssi_pio_interrupt(struct rsnd_mod *mod,
struct rsnd_dai_stream *io);
static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
int is_dma = rsnd_ssi_is_dma_mode(mod);
u32 status;
bool elapsed = false;
bool stop = false;
spin_lock(&priv->lock);
/* ignore all cases if not working */
if (!rsnd_io_is_working(io))
goto rsnd_ssi_interrupt_out;
status = rsnd_ssi_status_get(mod);
/* PIO only */
if (!is_dma && (status & DIRQ))
elapsed = rsnd_ssi_pio_interrupt(mod, io);
/* DMA only */
if (is_dma && (status & (UIRQ | OIRQ))) {
rsnd_dbg_irq_status(dev, "%s[%d] err status : 0x%08x\n",
rsnd_mod_name(mod), rsnd_mod_id(mod), status);
stop = true;
}
rsnd_ssi_status_clear(mod);
rsnd_ssi_interrupt_out:
spin_unlock(&priv->lock);
if (elapsed)
rsnd_dai_period_elapsed(io);
if (stop)
snd_pcm_stop_xrun(io->substream);
}
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static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
{
struct rsnd_mod *mod = data;
rsnd_mod_interrupt(mod, __rsnd_ssi_interrupt);
return IRQ_HANDLED;
}
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/*
* SSI PIO
*/
static void rsnd_ssi_parent_attach(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
if (!__rsnd_ssi_is_pin_sharing(mod))
return;
if (!rsnd_rdai_is_clk_master(rdai))
return;
switch (rsnd_mod_id(mod)) {
case 1:
case 2:
rsnd_dai_connect(rsnd_ssi_mod_get(priv, 0), io, RSND_MOD_SSIP);
break;
case 4:
rsnd_dai_connect(rsnd_ssi_mod_get(priv, 3), io, RSND_MOD_SSIP);
break;
case 8:
rsnd_dai_connect(rsnd_ssi_mod_get(priv, 7), io, RSND_MOD_SSIP);
break;
}
}
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| Kuninori Morimoto | 120 | 100.00% | 2 | 100.00% |
| Total | 120 | 100.00% | 2 | 100.00% |
static int rsnd_ssi_pcm_new(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct snd_soc_pcm_runtime *rtd)
{
/*
* rsnd_rdai_is_clk_master() will be enabled after set_fmt,
* and, pcm_new will be called after it.
* This function reuse pcm_new at this point.
*/
rsnd_ssi_parent_attach(mod, io);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 32 | 100.00% | 1 | 100.00% |
| Total | 32 | 100.00% | 1 | 100.00% |
static int rsnd_ssi_common_probe(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int ret;
/*
* SSIP/SSIU/IRQ are not needed on
* SSI Multi slaves
*/
if (rsnd_ssi_is_multi_slave(mod, io))
return 0;
/*
* It can't judge ssi parent at this point
* see rsnd_ssi_pcm_new()
*/
ret = rsnd_ssiu_attach(io, mod);
if (ret < 0)
return ret;
/*
* SSI might be called again as PIO fallback
* It is easy to manual handling for IRQ request/free
*
* OTOH, this function might be called many times if platform is
* using MIX. It needs xxx_attach() many times on xxx_probe().
* Because of it, we can't control .probe/.remove calling count by
* mod->status.
* But it don't need to call request_irq() many times.
* Let's control it by RSND_SSI_PROBED flag.
*/
if (!rsnd_flags_has(ssi, RSND_SSI_PROBED)) {
ret = request_irq(ssi->irq,
rsnd_ssi_interrupt,
IRQF_SHARED,
dev_name(dev), mod);
rsnd_flags_set(ssi, RSND_SSI_PROBED);
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 119 | 100.00% | 5 | 100.00% |
| Total | 119 | 100.00% | 5 | 100.00% |
static int rsnd_ssi_common_remove(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct rsnd_mod *pure_ssi_mod = rsnd_io_to_mod_ssi(io);
/* Do nothing if non SSI (= SSI parent, multi SSI) mod */
if (pure_ssi_mod != mod)
return 0;
/* PIO will request IRQ again */
if (rsnd_flags_has(ssi, RSND_SSI_PROBED)) {
free_irq(ssi->irq, mod);
rsnd_flags_del(ssi, RSND_SSI_PROBED);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 82 | 100.00% | 1 | 100.00% |
| Total | 82 | 100.00% | 1 | 100.00% |
/*
* SSI PIO functions
*/
static bool rsnd_ssi_pio_interrupt(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
u32 *buf = (u32 *)(runtime->dma_area + ssi->byte_pos);
int shift = 0;
int byte_pos;
bool elapsed = false;
if (snd_pcm_format_width(runtime->format) == 24)
shift = 8;
/*
* 8/16/32 data can be assesse to TDR/RDR register
* directly as 32bit data
* see rsnd_ssi_init()
*/
if (rsnd_io_is_play(io))
rsnd_mod_write(mod, SSITDR, (*buf) << shift);
else
*buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
byte_pos = ssi->byte_pos + sizeof(*buf);
if (byte_pos >= ssi->next_period_byte) {
int period_pos = byte_pos / ssi->byte_per_period;
if (period_pos >= runtime->periods) {
byte_pos = 0;
period_pos = 0;
}
ssi->next_period_byte = (period_pos + 1) * ssi->byte_per_period;
elapsed = true;
}
WRITE_ONCE(ssi->byte_pos, byte_pos);
return elapsed;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 198 | 100.00% | 6 | 100.00% |
| Total | 198 | 100.00% | 6 | 100.00% |
static int rsnd_ssi_pio_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
if (!rsnd_ssi_is_parent(mod, io)) {
ssi->byte_pos = 0;
ssi->byte_per_period = runtime->period_size *
runtime->channels *
samples_to_bytes(runtime, 1);
ssi->next_period_byte = ssi->byte_per_period;
}
return rsnd_ssi_init(mod, io, priv);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 96 | 100.00% | 3 | 100.00% |
| Total | 96 | 100.00% | 3 | 100.00% |
static int rsnd_ssi_pio_pointer(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
snd_pcm_uframes_t *pointer)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
*pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos));
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 55 | 94.83% | 3 | 75.00% |
| Jiada Wang | 3 | 5.17% | 1 | 25.00% |
| Total | 58 | 100.00% | 4 | 100.00% |
static struct rsnd_mod_ops rsnd_ssi_pio_ops = {
.name = SSI_NAME,
.probe = rsnd_ssi_common_probe,
.remove = rsnd_ssi_common_remove,
.init = rsnd_ssi_pio_init,
.quit = rsnd_ssi_quit,
.start = rsnd_ssi_start,
.stop = rsnd_ssi_stop,
.irq = rsnd_ssi_irq,
.pointer = rsnd_ssi_pio_pointer,
.pcm_new = rsnd_ssi_pcm_new,
.hw_params = rsnd_ssi_hw_params,
};
static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int ret;
/*
* SSIP/SSIU/IRQ/DMA are not needed on
* SSI Multi slaves
*/
if (rsnd_ssi_is_multi_slave(mod, io))
return 0;
ret = rsnd_ssi_common_probe(mod, io, priv);
if (ret)
return ret;
/* SSI probe might be called many times in MUX multi path */
ret = rsnd_dma_attach(io, mod, &ssi->dma);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 83 | 100.00% | 11 | 100.00% |
| Total | 83 | 100.00% | 11 | 100.00% |
static int rsnd_ssi_fallback(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
/*
* fallback to PIO
*
* SSI .probe might be called again.
* see
* rsnd_rdai_continuance_probe()
*/
mod->ops = &rsnd_ssi_pio_ops;
dev_info(dev, "%s[%d] fallback to PIO mode\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 59 | 100.00% | 5 | 100.00% |
| Total | 59 | 100.00% | 5 | 100.00% |
static struct dma_chan *rsnd_ssi_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);
char *name;
if (rsnd_ssi_use_busif(io))
name = is_play ? "rxu" : "txu";
else
name = is_play ? "rx" : "tx";
return rsnd_dma_request_channel(rsnd_ssi_of_node(priv),
mod, name);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 77 | 100.00% | 4 | 100.00% |
| Total | 77 | 100.00% | 4 | 100.00% |
static struct rsnd_mod_ops rsnd_ssi_dma_ops = {
.name = SSI_NAME,
.dma_req = rsnd_ssi_dma_req,
.probe = rsnd_ssi_dma_probe,
.remove = rsnd_ssi_common_remove,
.init = rsnd_ssi_init,
.quit = rsnd_ssi_quit,
.start = rsnd_ssi_start,
.stop = rsnd_ssi_stop,
.irq = rsnd_ssi_irq,
.pcm_new = rsnd_ssi_pcm_new,
.fallback = rsnd_ssi_fallback,
.hw_params = rsnd_ssi_hw_params,
};
int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod)
{
return mod->ops == &rsnd_ssi_dma_ops;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
/*
* ssi mod function
*/
static void rsnd_ssi_connect(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
enum rsnd_mod_type types[] = {
RSND_MOD_SSI,
RSND_MOD_SSIM1,
RSND_MOD_SSIM2,
RSND_MOD_SSIM3,
};
enum rsnd_mod_type type;
int i;
/* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */
for (i = 0; i < ARRAY_SIZE(types); i++) {
type = types[i];
if (!rsnd_io_to_mod(io, type)) {
rsnd_dai_connect(mod, io, type);
rsnd_rdai_channels_set(rdai, (i + 1) * 2);
rsnd_rdai_ssi_lane_set(rdai, (i + 1));
return;
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 120 | 100.00% | 2 | 100.00% |
| Total | 120 | 100.00% | 2 | 100.00% |
void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
struct device_node *playback,
struct device_node *capture)
{
struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
struct device_node *node;
struct device_node *np;
struct rsnd_mod *mod;
int i;
node = rsnd_ssi_of_node(priv);
if (!node)
return;
i = 0;
for_each_child_of_node(node, np) {
mod = rsnd_ssi_mod_get(priv, i);
if (np == playback)
rsnd_ssi_connect(mod, &rdai->playback);
if (np == capture)
rsnd_ssi_connect(mod, &rdai->capture);
i++;
}
of_node_put(node);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 122 | 100.00% | 1 | 100.00% |
| Total | 122 | 100.00% | 1 | 100.00% |
static void __rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv,
struct rsnd_dai_stream *io,
struct device_node *remote_ep)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
struct rsnd_ssi *ssi;
if (!mod)
return;
ssi = rsnd_mod_to_ssi(mod);
if (strstr(remote_ep->full_name, "hdmi0")) {
rsnd_flags_set(ssi, RSND_SSI_HDMI0);
dev_dbg(dev, "%s[%d] connected to HDMI0\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
}
if (strstr(remote_ep->full_name, "hdmi1")) {
rsnd_flags_set(ssi, RSND_SSI_HDMI1);
dev_dbg(dev, "%s[%d] connected to HDMI1\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 133 | 100.00% | 3 | 100.00% |
| Total | 133 | 100.00% | 3 | 100.00% |
void rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv,
struct device_node *endpoint,
int dai_i)
{
struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
struct device_node *remote_ep;
remote_ep = of_graph_get_remote_endpoint(endpoint);
if (!remote_ep)
return;
__rsnd_ssi_parse_hdmi_connection(priv, &rdai->playback, remote_ep);
__rsnd_ssi_parse_hdmi_connection(priv, &rdai->capture, remote_ep);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 72 | 100.00% | 1 | 100.00% |
| Total | 72 | 100.00% | 1 | 100.00% |
struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv)))
id = 0;
return rsnd_mod_get(rsnd_ssi_get(priv, id));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 39 | 84.78% | 3 | 75.00% |
| Takashi Iwai | 7 | 15.22% | 1 | 25.00% |
| Total | 46 | 100.00% | 4 | 100.00% |
int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
return !!(rsnd_flags_has(ssi, RSND_SSI_CLK_PIN_SHARE));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 32 | 100.00% | 4 | 100.00% |
| Total | 32 | 100.00% | 4 | 100.00% |
static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io,
struct rsnd_mod *mod,
enum rsnd_mod_type type)
{
/*
* SSIP (= SSI parent) needs to be special, otherwise,
* 2nd SSI might doesn't start. see also rsnd_mod_call()
*
* We can't include parent SSI status on SSI, because we don't know
* how many SSI requests parent SSI. Thus, it is localed on "io" now.
* ex) trouble case
* Playback: SSI0
* Capture : SSI1 (needs SSI0)
*
* 1) start Capture -> SSI0/SSI1 are started.
* 2) start Playback -> SSI0 doesn't work, because it is already
* marked as "started" on 1)
*
* OTOH, using each mod's status is good for MUX case.
* It doesn't need to start in 2nd start
* ex)
* IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0
* |
* IO-1: SRC1 -> CTU2 -+
*
* 1) start IO-0 -> start SSI0
* 2) start IO-1 -> SSI0 doesn't need to start, because it is
* already started on 1)
*/
if (type == RSND_MOD_SSIP)
return &io->parent_ssi_status;
return rsnd_mod_get_status(io, mod, type);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 44 | 100.00% | 1 | 100.00% |
| Total | 44 | 100.00% | 1 | 100.00% |
int rsnd_ssi_probe(struct rsnd_priv *priv)
{
struct device_node *node;
struct device_node *np;
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mod_ops *ops;
struct clk *clk;
struct rsnd_ssi *ssi;
char name[RSND_SSI_NAME_SIZE];
int i, nr, ret;
node = rsnd_ssi_of_node(priv);
if (!node)
return -EINVAL;
nr = of_get_child_count(node);
if (!nr) {
ret = -EINVAL;
goto rsnd_ssi_probe_done;
}
ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL);
if (!ssi) {
ret = -ENOMEM;
goto rsnd_ssi_probe_done;
}
priv->ssi = ssi;
priv->ssi_nr = nr;
i = 0;
for_each_child_of_node(node, np) {
if (!of_device_is_available(np))
goto skip;
ssi = rsnd_ssi_get(priv, i);
snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d",
SSI_NAME, i);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
of_node_put(np);
goto rsnd_ssi_probe_done;
}
if (of_get_property(np, "shared-pin", NULL))
rsnd_flags_set(ssi, RSND_SSI_CLK_PIN_SHARE);
if (of_get_property(np, "no-busif", NULL))
rsnd_flags_set(ssi, RSND_SSI_NO_BUSIF);
ssi->irq = irq_of_parse_and_map(np, 0);
if (!ssi->irq) {
ret = -EINVAL;
of_node_put(np);
goto rsnd_ssi_probe_done;
}
if (of_property_read_bool(np, "pio-transfer"))
ops = &rsnd_ssi_pio_ops;
else
ops = &rsnd_ssi_dma_ops;
ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk,
rsnd_ssi_get_status, RSND_MOD_SSI, i);
if (ret) {
of_node_put(np);
goto rsnd_ssi_probe_done;
}
skip:
i++;
}
ret = 0;
rsnd_ssi_probe_done:
of_node_put(node);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 344 | 95.03% | 19 | 90.48% |
| Julia Lawall | 18 | 4.97% | 2 | 9.52% |
| Total | 362 | 100.00% | 21 | 100.00% |
void rsnd_ssi_remove(struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi;
int i;
for_each_rsnd_ssi(ssi, priv, i) {
rsnd_mod_quit(rsnd_mod_get(ssi));
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 36 | 100.00% | 2 | 100.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 4343 | 98.66% | 96 | 95.05% |
| Andrzej Hajda | 31 | 0.70% | 1 | 0.99% |
| Julia Lawall | 18 | 0.41% | 2 | 1.98% |
| Takashi Iwai | 7 | 0.16% | 1 | 0.99% |
| Jiada Wang | 3 | 0.07% | 1 | 0.99% |
| Total | 4402 | 100.00% | 101 | 100.00% |
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