linux/drivers/soundwire/intel_ace2x.c

678 lines
17 KiB
C
Raw Normal View History

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
// Copyright(c) 2023 Intel Corporation. All rights reserved.
/*
* Soundwire Intel ops for LunarLake
*/
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/soundwire/sdw_registers.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_intel.h>
#include <sound/pcm_params.h>
#include <sound/hda-mlink.h>
#include "cadence_master.h"
#include "bus.h"
#include "intel.h"
/*
* shim vendor-specific (vs) ops
*/
static void intel_shim_vs_init(struct sdw_intel *sdw)
{
void __iomem *shim_vs = sdw->link_res->shim_vs;
u16 act;
act = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL);
u16p_replace_bits(&act, 0x1, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS);
act |= SDW_SHIM2_INTEL_VS_ACTMCTL_DACTQE;
act |= SDW_SHIM2_INTEL_VS_ACTMCTL_DODS;
intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL, act);
usleep_range(10, 15);
}
static int intel_shim_check_wake(struct sdw_intel *sdw)
{
void __iomem *shim_vs;
u16 wake_sts;
shim_vs = sdw->link_res->shim_vs;
wake_sts = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_WAKESTS);
return wake_sts & SDW_SHIM2_INTEL_VS_WAKEEN_PWS;
}
static void intel_shim_wake(struct sdw_intel *sdw, bool wake_enable)
{
void __iomem *shim_vs = sdw->link_res->shim_vs;
u16 wake_en;
u16 wake_sts;
wake_en = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_WAKEEN);
if (wake_enable) {
/* Enable the wakeup */
wake_en |= SDW_SHIM2_INTEL_VS_WAKEEN_PWE;
intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_WAKEEN, wake_en);
} else {
/* Disable the wake up interrupt */
wake_en &= ~SDW_SHIM2_INTEL_VS_WAKEEN_PWE;
intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_WAKEEN, wake_en);
/* Clear wake status (W1C) */
wake_sts = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_WAKESTS);
wake_sts |= SDW_SHIM2_INTEL_VS_WAKEEN_PWS;
intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_WAKESTS, wake_sts);
}
}
static int intel_link_power_up(struct sdw_intel *sdw)
{
struct sdw_bus *bus = &sdw->cdns.bus;
struct sdw_master_prop *prop = &bus->prop;
u32 *shim_mask = sdw->link_res->shim_mask;
unsigned int link_id = sdw->instance;
u32 syncprd;
int ret;
mutex_lock(sdw->link_res->shim_lock);
if (!*shim_mask) {
/* we first need to program the SyncPRD/CPU registers */
dev_dbg(sdw->cdns.dev, "first link up, programming SYNCPRD\n");
if (prop->mclk_freq % 6000000)
syncprd = SDW_SHIM_SYNC_SYNCPRD_VAL_38_4;
else
syncprd = SDW_SHIM_SYNC_SYNCPRD_VAL_24;
ret = hdac_bus_eml_sdw_set_syncprd_unlocked(sdw->link_res->hbus, syncprd);
if (ret < 0) {
dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_set_syncprd failed: %d\n",
__func__, ret);
goto out;
}
}
ret = hdac_bus_eml_sdw_power_up_unlocked(sdw->link_res->hbus, link_id);
if (ret < 0) {
dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_up failed: %d\n",
__func__, ret);
goto out;
}
if (!*shim_mask) {
/* SYNCPU will change once link is active */
ret = hdac_bus_eml_sdw_wait_syncpu_unlocked(sdw->link_res->hbus);
if (ret < 0) {
dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_wait_syncpu failed: %d\n",
__func__, ret);
goto out;
}
}
*shim_mask |= BIT(link_id);
sdw->cdns.link_up = true;
intel_shim_vs_init(sdw);
out:
mutex_unlock(sdw->link_res->shim_lock);
return ret;
}
static int intel_link_power_down(struct sdw_intel *sdw)
{
u32 *shim_mask = sdw->link_res->shim_mask;
unsigned int link_id = sdw->instance;
int ret;
mutex_lock(sdw->link_res->shim_lock);
sdw->cdns.link_up = false;
*shim_mask &= ~BIT(link_id);
ret = hdac_bus_eml_sdw_power_down_unlocked(sdw->link_res->hbus, link_id);
if (ret < 0) {
dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_down failed: %d\n",
__func__, ret);
/*
* we leave the sdw->cdns.link_up flag as false since we've disabled
* the link at this point and cannot handle interrupts any longer.
*/
}
mutex_unlock(sdw->link_res->shim_lock);
return ret;
}
static void intel_sync_arm(struct sdw_intel *sdw)
{
unsigned int link_id = sdw->instance;
mutex_lock(sdw->link_res->shim_lock);
hdac_bus_eml_sdw_sync_arm_unlocked(sdw->link_res->hbus, link_id);
mutex_unlock(sdw->link_res->shim_lock);
}
static int intel_sync_go_unlocked(struct sdw_intel *sdw)
{
int ret;
ret = hdac_bus_eml_sdw_sync_go_unlocked(sdw->link_res->hbus);
if (ret < 0)
dev_err(sdw->cdns.dev, "%s: SyncGO clear failed: %d\n", __func__, ret);
return ret;
}
static int intel_sync_go(struct sdw_intel *sdw)
{
int ret;
mutex_lock(sdw->link_res->shim_lock);
ret = intel_sync_go_unlocked(sdw);
mutex_unlock(sdw->link_res->shim_lock);
return ret;
}
static bool intel_check_cmdsync_unlocked(struct sdw_intel *sdw)
{
return hdac_bus_eml_sdw_check_cmdsync_unlocked(sdw->link_res->hbus);
}
/* DAI callbacks */
static int intel_params_stream(struct sdw_intel *sdw,
struct snd_pcm_substream *substream,
struct snd_soc_dai *dai,
struct snd_pcm_hw_params *hw_params,
int link_id, int alh_stream_id)
{
struct sdw_intel_link_res *res = sdw->link_res;
struct sdw_intel_stream_params_data params_data;
params_data.substream = substream;
params_data.dai = dai;
params_data.hw_params = hw_params;
params_data.link_id = link_id;
params_data.alh_stream_id = alh_stream_id;
if (res->ops && res->ops->params_stream && res->dev)
return res->ops->params_stream(res->dev,
&params_data);
return -EIO;
}
static int intel_free_stream(struct sdw_intel *sdw,
struct snd_pcm_substream *substream,
struct snd_soc_dai *dai,
int link_id)
{
struct sdw_intel_link_res *res = sdw->link_res;
struct sdw_intel_stream_free_data free_data;
free_data.substream = substream;
free_data.dai = dai;
free_data.link_id = link_id;
if (res->ops && res->ops->free_stream && res->dev)
return res->ops->free_stream(res->dev,
&free_data);
return 0;
}
/*
* DAI operations
*/
static int intel_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
struct sdw_intel *sdw = cdns_to_intel(cdns);
struct sdw_cdns_dai_runtime *dai_runtime;
struct sdw_cdns_pdi *pdi;
struct sdw_stream_config sconfig;
struct sdw_port_config *pconfig;
int ch, dir;
int ret;
dai_runtime = cdns->dai_runtime_array[dai->id];
if (!dai_runtime)
return -EIO;
ch = params_channels(params);
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
dir = SDW_DATA_DIR_RX;
else
dir = SDW_DATA_DIR_TX;
pdi = sdw_cdns_alloc_pdi(cdns, &cdns->pcm, ch, dir, dai->id);
if (!pdi) {
ret = -EINVAL;
goto error;
}
/* the SHIM will be configured in the callback functions */
sdw_cdns_config_stream(cdns, ch, dir, pdi);
/* store pdi and state, may be needed in prepare step */
dai_runtime->paused = false;
dai_runtime->suspended = false;
dai_runtime->pdi = pdi;
/* Inform DSP about PDI stream number */
ret = intel_params_stream(sdw, substream, dai, params,
sdw->instance,
pdi->intel_alh_id);
if (ret)
goto error;
sconfig.direction = dir;
sconfig.ch_count = ch;
sconfig.frame_rate = params_rate(params);
sconfig.type = dai_runtime->stream_type;
sconfig.bps = snd_pcm_format_width(params_format(params));
/* Port configuration */
pconfig = kzalloc(sizeof(*pconfig), GFP_KERNEL);
if (!pconfig) {
ret = -ENOMEM;
goto error;
}
pconfig->num = pdi->num;
pconfig->ch_mask = (1 << ch) - 1;
ret = sdw_stream_add_master(&cdns->bus, &sconfig,
pconfig, 1, dai_runtime->stream);
if (ret)
dev_err(cdns->dev, "add master to stream failed:%d\n", ret);
kfree(pconfig);
error:
return ret;
}
static int intel_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
struct sdw_intel *sdw = cdns_to_intel(cdns);
struct sdw_cdns_dai_runtime *dai_runtime;
int ch, dir;
int ret = 0;
dai_runtime = cdns->dai_runtime_array[dai->id];
if (!dai_runtime) {
dev_err(dai->dev, "failed to get dai runtime in %s\n",
__func__);
return -EIO;
}
if (dai_runtime->suspended) {
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_pcm_hw_params *hw_params;
hw_params = &rtd->dpcm[substream->stream].hw_params;
dai_runtime->suspended = false;
/*
* .prepare() is called after system resume, where we
* need to reinitialize the SHIM/ALH/Cadence IP.
* .prepare() is also called to deal with underflows,
* but in those cases we cannot touch ALH/SHIM
* registers
*/
/* configure stream */
ch = params_channels(hw_params);
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
dir = SDW_DATA_DIR_RX;
else
dir = SDW_DATA_DIR_TX;
/* the SHIM will be configured in the callback functions */
sdw_cdns_config_stream(cdns, ch, dir, dai_runtime->pdi);
/* Inform DSP about PDI stream number */
ret = intel_params_stream(sdw, substream, dai,
hw_params,
sdw->instance,
dai_runtime->pdi->intel_alh_id);
}
return ret;
}
static int
intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
struct sdw_intel *sdw = cdns_to_intel(cdns);
struct sdw_cdns_dai_runtime *dai_runtime;
int ret;
dai_runtime = cdns->dai_runtime_array[dai->id];
if (!dai_runtime)
return -EIO;
/*
* The sdw stream state will transition to RELEASED when stream->
* master_list is empty. So the stream state will transition to
* DEPREPARED for the first cpu-dai and to RELEASED for the last
* cpu-dai.
*/
ret = sdw_stream_remove_master(&cdns->bus, dai_runtime->stream);
if (ret < 0) {
dev_err(dai->dev, "remove master from stream %s failed: %d\n",
dai_runtime->stream->name, ret);
return ret;
}
ret = intel_free_stream(sdw, substream, dai, sdw->instance);
if (ret < 0) {
dev_err(dai->dev, "intel_free_stream: failed %d\n", ret);
return ret;
}
dai_runtime->pdi = NULL;
return 0;
}
static int intel_pcm_set_sdw_stream(struct snd_soc_dai *dai,
void *stream, int direction)
{
return cdns_set_sdw_stream(dai, stream, direction);
}
static void *intel_get_sdw_stream(struct snd_soc_dai *dai,
int direction)
{
struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
struct sdw_cdns_dai_runtime *dai_runtime;
dai_runtime = cdns->dai_runtime_array[dai->id];
if (!dai_runtime)
return ERR_PTR(-EINVAL);
return dai_runtime->stream;
}
static int intel_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
{
struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
struct sdw_intel *sdw = cdns_to_intel(cdns);
struct sdw_intel_link_res *res = sdw->link_res;
struct sdw_cdns_dai_runtime *dai_runtime;
int ret = 0;
/*
* The .trigger callback is used to program HDaudio DMA and send required IPC to audio
* firmware.
*/
if (res->ops && res->ops->trigger) {
ret = res->ops->trigger(substream, cmd, dai);
if (ret < 0)
return ret;
}
dai_runtime = cdns->dai_runtime_array[dai->id];
if (!dai_runtime) {
dev_err(dai->dev, "failed to get dai runtime in %s\n",
__func__);
return -EIO;
}
switch (cmd) {
case SNDRV_PCM_TRIGGER_SUSPEND:
/*
* The .prepare callback is used to deal with xruns and resume operations.
* In the case of xruns, the DMAs and SHIM registers cannot be touched,
* but for resume operations the DMAs and SHIM registers need to be initialized.
* the .trigger callback is used to track the suspend case only.
*/
dai_runtime->suspended = true;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
dai_runtime->paused = true;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
dai_runtime->paused = false;
break;
default:
break;
}
return ret;
}
static const struct snd_soc_dai_ops intel_pcm_dai_ops = {
.hw_params = intel_hw_params,
.prepare = intel_prepare,
.hw_free = intel_hw_free,
.trigger = intel_trigger,
.set_stream = intel_pcm_set_sdw_stream,
.get_stream = intel_get_sdw_stream,
};
static const struct snd_soc_component_driver dai_component = {
.name = "soundwire",
};
/*
* PDI routines
*/
static void intel_pdi_init(struct sdw_intel *sdw,
struct sdw_cdns_stream_config *config)
{
void __iomem *shim = sdw->link_res->shim;
int pcm_cap;
/* PCM Stream Capability */
pcm_cap = intel_readw(shim, SDW_SHIM2_PCMSCAP);
config->pcm_bd = FIELD_GET(SDW_SHIM2_PCMSCAP_BSS, pcm_cap);
config->pcm_in = FIELD_GET(SDW_SHIM2_PCMSCAP_ISS, pcm_cap);
config->pcm_out = FIELD_GET(SDW_SHIM2_PCMSCAP_ISS, pcm_cap);
dev_dbg(sdw->cdns.dev, "PCM cap bd:%d in:%d out:%d\n",
config->pcm_bd, config->pcm_in, config->pcm_out);
}
static int
intel_pdi_get_ch_cap(struct sdw_intel *sdw, unsigned int pdi_num)
{
void __iomem *shim = sdw->link_res->shim;
/* zero based values for channel count in register */
return intel_readw(shim, SDW_SHIM2_PCMSYCHC(pdi_num)) + 1;
}
static void intel_pdi_get_ch_update(struct sdw_intel *sdw,
struct sdw_cdns_pdi *pdi,
unsigned int num_pdi,
unsigned int *num_ch)
{
int ch_count = 0;
int i;
for (i = 0; i < num_pdi; i++) {
pdi->ch_count = intel_pdi_get_ch_cap(sdw, pdi->num);
ch_count += pdi->ch_count;
pdi++;
}
*num_ch = ch_count;
}
static void intel_pdi_stream_ch_update(struct sdw_intel *sdw,
struct sdw_cdns_streams *stream)
{
intel_pdi_get_ch_update(sdw, stream->bd, stream->num_bd,
&stream->num_ch_bd);
intel_pdi_get_ch_update(sdw, stream->in, stream->num_in,
&stream->num_ch_in);
intel_pdi_get_ch_update(sdw, stream->out, stream->num_out,
&stream->num_ch_out);
}
static int intel_create_dai(struct sdw_cdns *cdns,
struct snd_soc_dai_driver *dais,
enum intel_pdi_type type,
u32 num, u32 off, u32 max_ch)
{
int i;
if (!num)
return 0;
for (i = off; i < (off + num); i++) {
dais[i].name = devm_kasprintf(cdns->dev, GFP_KERNEL,
"SDW%d Pin%d",
cdns->instance, i);
if (!dais[i].name)
return -ENOMEM;
if (type == INTEL_PDI_BD || type == INTEL_PDI_OUT) {
dais[i].playback.channels_min = 1;
dais[i].playback.channels_max = max_ch;
}
if (type == INTEL_PDI_BD || type == INTEL_PDI_IN) {
dais[i].capture.channels_min = 1;
dais[i].capture.channels_max = max_ch;
}
dais[i].ops = &intel_pcm_dai_ops;
}
return 0;
}
static int intel_register_dai(struct sdw_intel *sdw)
{
struct sdw_cdns_dai_runtime **dai_runtime_array;
struct sdw_cdns_stream_config config;
struct sdw_cdns *cdns = &sdw->cdns;
struct sdw_cdns_streams *stream;
struct snd_soc_dai_driver *dais;
int num_dai;
int ret;
int off = 0;
/* Read the PDI config and initialize cadence PDI */
intel_pdi_init(sdw, &config);
ret = sdw_cdns_pdi_init(cdns, config);
if (ret)
return ret;
intel_pdi_stream_ch_update(sdw, &sdw->cdns.pcm);
/* DAIs are created based on total number of PDIs supported */
num_dai = cdns->pcm.num_pdi;
dai_runtime_array = devm_kcalloc(cdns->dev, num_dai,
sizeof(struct sdw_cdns_dai_runtime *),
GFP_KERNEL);
if (!dai_runtime_array)
return -ENOMEM;
cdns->dai_runtime_array = dai_runtime_array;
dais = devm_kcalloc(cdns->dev, num_dai, sizeof(*dais), GFP_KERNEL);
if (!dais)
return -ENOMEM;
/* Create PCM DAIs */
stream = &cdns->pcm;
ret = intel_create_dai(cdns, dais, INTEL_PDI_IN, cdns->pcm.num_in,
off, stream->num_ch_in);
if (ret)
return ret;
off += cdns->pcm.num_in;
ret = intel_create_dai(cdns, dais, INTEL_PDI_OUT, cdns->pcm.num_out,
off, stream->num_ch_out);
if (ret)
return ret;
off += cdns->pcm.num_out;
ret = intel_create_dai(cdns, dais, INTEL_PDI_BD, cdns->pcm.num_bd,
off, stream->num_ch_bd);
if (ret)
return ret;
return devm_snd_soc_register_component(cdns->dev, &dai_component,
dais, num_dai);
}
static void intel_program_sdi(struct sdw_intel *sdw, int dev_num)
{
int ret;
ret = hdac_bus_eml_sdw_set_lsdiid(sdw->link_res->hbus, sdw->instance, dev_num);
if (ret < 0)
dev_err(sdw->cdns.dev, "%s: could not set lsdiid for link %d %d\n",
__func__, sdw->instance, dev_num);
}
const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops = {
.debugfs_init = intel_ace2x_debugfs_init,
.debugfs_exit = intel_ace2x_debugfs_exit,
.register_dai = intel_register_dai,
.check_clock_stop = intel_check_clock_stop,
.start_bus = intel_start_bus,
.start_bus_after_reset = intel_start_bus_after_reset,
.start_bus_after_clock_stop = intel_start_bus_after_clock_stop,
.stop_bus = intel_stop_bus,
.link_power_up = intel_link_power_up,
.link_power_down = intel_link_power_down,
.shim_check_wake = intel_shim_check_wake,
.shim_wake = intel_shim_wake,
.pre_bank_switch = intel_pre_bank_switch,
.post_bank_switch = intel_post_bank_switch,
.sync_arm = intel_sync_arm,
.sync_go_unlocked = intel_sync_go_unlocked,
.sync_go = intel_sync_go,
.sync_check_cmdsync_unlocked = intel_check_cmdsync_unlocked,
.program_sdi = intel_program_sdi,
};
EXPORT_SYMBOL_NS(sdw_intel_lnl_hw_ops, SOUNDWIRE_INTEL);
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_MLINK);