linux/drivers/soundwire/intel_ace2x.c
Pierre-Louis Bossart 32c3aa85fb soundwire: intel_ace2x: add pre/post bank switch callbacks
The .pre_ and .post_switch callbacks are mandatory.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230515071042.2038-22-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-05-27 16:06:47 +05:30

394 lines
9.5 KiB
C

// 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/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 = 0;
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 operations
*/
static const struct snd_soc_dai_ops intel_pcm_dai_ops = {
};
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);