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cs35l41_hda.c
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// SPDX-License-Identifier: GPL-2.0
//
// CS35l41 ALSA HDA audio driver
//
// Copyright 2021 Cirrus Logic, Inc.
//
// Author: Lucas Tanure <[email protected]>
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <sound/hda_codec.h>
#include <sound/soc.h>
#include <linux/pm_runtime.h>
#include "hda_local.h"
#include "hda_auto_parser.h"
#include "hda_jack.h"
#include "hda_generic.h"
#include "hda_component.h"
#include "cs35l41_hda.h"
#include "hda_cs_dsp_ctl.h"
#include "cs35l41_hda_property.h"
#define CS35L41_FIRMWARE_ROOT "cirrus/"
#define CS35L41_PART "cs35l41"
#define HALO_STATE_DSP_CTL_NAME "HALO_STATE"
#define HALO_STATE_DSP_CTL_TYPE 5
#define HALO_STATE_DSP_CTL_ALG 262308
#define CAL_R_DSP_CTL_NAME "CAL_R"
#define CAL_STATUS_DSP_CTL_NAME "CAL_STATUS"
#define CAL_CHECKSUM_DSP_CTL_NAME "CAL_CHECKSUM"
#define CAL_AMBIENT_DSP_CTL_NAME "CAL_AMBIENT"
#define CAL_DSP_CTL_TYPE 5
#define CAL_DSP_CTL_ALG 205
static bool firmware_autostart = 1;
module_param(firmware_autostart, bool, 0444);
MODULE_PARM_DESC(firmware_autostart, "Allow automatic firmware download on boot"
"(0=Disable, 1=Enable) (default=1); ");
static const struct reg_sequence cs35l41_hda_config[] = {
{ CS35L41_PLL_CLK_CTRL, 0x00000430 }, // 3072000Hz, BCLK Input, PLL_REFCLK_EN = 1
{ CS35L41_DSP_CLK_CTRL, 0x00000003 }, // DSP CLK EN
{ CS35L41_GLOBAL_CLK_CTRL, 0x00000003 }, // GLOBAL_FS = 48 kHz
{ CS35L41_SP_ENABLES, 0x00010000 }, // ASP_RX1_EN = 1
{ CS35L41_SP_RATE_CTRL, 0x00000021 }, // ASP_BCLK_FREQ = 3.072 MHz
{ CS35L41_SP_FORMAT, 0x20200200 }, // 32 bits RX/TX slots, I2S, clk consumer
{ CS35L41_SP_HIZ_CTRL, 0x00000002 }, // Hi-Z unused
{ CS35L41_SP_TX_WL, 0x00000018 }, // 24 cycles/slot
{ CS35L41_SP_RX_WL, 0x00000018 }, // 24 cycles/slot
{ CS35L41_DAC_PCM1_SRC, 0x00000008 }, // DACPCM1_SRC = ASPRX1
{ CS35L41_ASP_TX1_SRC, 0x00000018 }, // ASPTX1 SRC = VMON
{ CS35L41_ASP_TX2_SRC, 0x00000019 }, // ASPTX2 SRC = IMON
{ CS35L41_ASP_TX3_SRC, 0x00000032 }, // ASPTX3 SRC = ERRVOL
{ CS35L41_ASP_TX4_SRC, 0x00000033 }, // ASPTX4 SRC = CLASSH_TGT
{ CS35L41_DSP1_RX1_SRC, 0x00000008 }, // DSP1RX1 SRC = ASPRX1
{ CS35L41_DSP1_RX2_SRC, 0x00000009 }, // DSP1RX2 SRC = ASPRX2
{ CS35L41_DSP1_RX3_SRC, 0x00000018 }, // DSP1RX3 SRC = VMON
{ CS35L41_DSP1_RX4_SRC, 0x00000019 }, // DSP1RX4 SRC = IMON
{ CS35L41_DSP1_RX5_SRC, 0x00000020 }, // DSP1RX5 SRC = ERRVOL
};
static const struct reg_sequence cs35l41_hda_config_dsp[] = {
{ CS35L41_PLL_CLK_CTRL, 0x00000430 }, // 3072000Hz, BCLK Input, PLL_REFCLK_EN = 1
{ CS35L41_DSP_CLK_CTRL, 0x00000003 }, // DSP CLK EN
{ CS35L41_GLOBAL_CLK_CTRL, 0x00000003 }, // GLOBAL_FS = 48 kHz
{ CS35L41_SP_ENABLES, 0x00010001 }, // ASP_RX1_EN = 1, ASP_TX1_EN = 1
{ CS35L41_SP_RATE_CTRL, 0x00000021 }, // ASP_BCLK_FREQ = 3.072 MHz
{ CS35L41_SP_FORMAT, 0x20200200 }, // 32 bits RX/TX slots, I2S, clk consumer
{ CS35L41_SP_HIZ_CTRL, 0x00000003 }, // Hi-Z unused/disabled
{ CS35L41_SP_TX_WL, 0x00000018 }, // 24 cycles/slot
{ CS35L41_SP_RX_WL, 0x00000018 }, // 24 cycles/slot
{ CS35L41_DAC_PCM1_SRC, 0x00000032 }, // DACPCM1_SRC = ERR_VOL
{ CS35L41_ASP_TX1_SRC, 0x00000018 }, // ASPTX1 SRC = VMON
{ CS35L41_ASP_TX2_SRC, 0x00000019 }, // ASPTX2 SRC = IMON
{ CS35L41_ASP_TX3_SRC, 0x00000028 }, // ASPTX3 SRC = VPMON
{ CS35L41_ASP_TX4_SRC, 0x00000029 }, // ASPTX4 SRC = VBSTMON
{ CS35L41_DSP1_RX1_SRC, 0x00000008 }, // DSP1RX1 SRC = ASPRX1
{ CS35L41_DSP1_RX2_SRC, 0x00000008 }, // DSP1RX2 SRC = ASPRX1
{ CS35L41_DSP1_RX3_SRC, 0x00000018 }, // DSP1RX3 SRC = VMON
{ CS35L41_DSP1_RX4_SRC, 0x00000019 }, // DSP1RX4 SRC = IMON
{ CS35L41_DSP1_RX5_SRC, 0x00000029 }, // DSP1RX5 SRC = VBSTMON
};
static const struct reg_sequence cs35l41_hda_unmute[] = {
{ CS35L41_AMP_DIG_VOL_CTRL, 0x00008000 }, // AMP_HPF_PCM_EN = 1, AMP_VOL_PCM 0.0 dB
{ CS35L41_AMP_GAIN_CTRL, 0x00000084 }, // AMP_GAIN_PCM 4.5 dB
};
static const struct reg_sequence cs35l41_hda_unmute_dsp[] = {
{ CS35L41_AMP_DIG_VOL_CTRL, 0x00008000 }, // AMP_HPF_PCM_EN = 1, AMP_VOL_PCM 0.0 dB
{ CS35L41_AMP_GAIN_CTRL, 0x00000233 }, // AMP_GAIN_PCM = 17.5dB AMP_GAIN_PDM = 19.5dB
};
static const struct reg_sequence cs35l41_hda_mute[] = {
{ CS35L41_AMP_GAIN_CTRL, 0x00000000 }, // AMP_GAIN_PCM 0.5 dB
{ CS35L41_AMP_DIG_VOL_CTRL, 0x0000A678 }, // AMP_HPF_PCM_EN = 1, AMP_VOL_PCM Mute
};
static void cs35l41_add_controls(struct cs35l41_hda *cs35l41)
{
struct hda_cs_dsp_ctl_info info;
info.device_name = cs35l41->amp_name;
info.fw_type = cs35l41->firmware_type;
info.card = cs35l41->codec->card;
hda_cs_dsp_add_controls(&cs35l41->cs_dsp, &info);
}
static const struct cs_dsp_client_ops client_ops = {
.control_remove = hda_cs_dsp_control_remove,
};
static int cs35l41_request_firmware_file(struct cs35l41_hda *cs35l41,
const struct firmware **firmware, char **filename,
const char *dir, const char *ssid, const char *amp_name,
int spkid, const char *filetype)
{
const char * const dsp_name = cs35l41->cs_dsp.name;
char *s, c;
int ret = 0;
if (spkid > -1 && ssid && amp_name)
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s-%s-spkid%d-%s.%s", dir, CS35L41_PART,
dsp_name, hda_cs_dsp_fw_ids[cs35l41->firmware_type],
ssid, spkid, amp_name, filetype);
else if (spkid > -1 && ssid)
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s-%s-spkid%d.%s", dir, CS35L41_PART,
dsp_name, hda_cs_dsp_fw_ids[cs35l41->firmware_type],
ssid, spkid, filetype);
else if (ssid && amp_name)
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s-%s-%s.%s", dir, CS35L41_PART,
dsp_name, hda_cs_dsp_fw_ids[cs35l41->firmware_type],
ssid, amp_name, filetype);
else if (ssid)
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s-%s.%s", dir, CS35L41_PART,
dsp_name, hda_cs_dsp_fw_ids[cs35l41->firmware_type],
ssid, filetype);
else
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s.%s", dir, CS35L41_PART,
dsp_name, hda_cs_dsp_fw_ids[cs35l41->firmware_type],
filetype);
if (*filename == NULL)
return -ENOMEM;
/*
* Make sure that filename is lower-case and any non alpha-numeric
* characters except full stop and '/' are replaced with hyphens.
*/
s = *filename;
while (*s) {
c = *s;
if (isalnum(c))
*s = tolower(c);
else if (c != '.' && c != '/')
*s = '-';
s++;
}
ret = firmware_request_nowarn(firmware, *filename, cs35l41->dev);
if (ret != 0) {
dev_dbg(cs35l41->dev, "Failed to request '%s'\n", *filename);
kfree(*filename);
*filename = NULL;
}
return ret;
}
static int cs35l41_request_firmware_files_spkid(struct cs35l41_hda *cs35l41,
const struct firmware **wmfw_firmware,
char **wmfw_filename,
const struct firmware **coeff_firmware,
char **coeff_filename)
{
int ret;
/* try cirrus/part-dspN-fwtype-sub<-spkidN><-ampname>.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, cs35l41->amp_name,
cs35l41->speaker_id, "wmfw");
if (!ret) {
/* try cirrus/part-dspN-fwtype-sub<-spkidN><-ampname>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, cs35l41->amp_name,
cs35l41->speaker_id, "bin");
if (ret)
goto coeff_err;
return 0;
}
/* try cirrus/part-dspN-fwtype-sub<-ampname>.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT, cs35l41->acpi_subsystem_id,
cs35l41->amp_name, -1, "wmfw");
if (!ret) {
/* try cirrus/part-dspN-fwtype-sub<-spkidN><-ampname>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, cs35l41->amp_name,
cs35l41->speaker_id, "bin");
if (ret)
goto coeff_err;
return 0;
}
/* try cirrus/part-dspN-fwtype-sub<-spkidN>.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT, cs35l41->acpi_subsystem_id,
NULL, cs35l41->speaker_id, "wmfw");
if (!ret) {
/* try cirrus/part-dspN-fwtype-sub<-spkidN><-ampname>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id,
cs35l41->amp_name, cs35l41->speaker_id, "bin");
if (ret)
/* try cirrus/part-dspN-fwtype-sub<-spkidN>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware,
coeff_filename, CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, NULL,
cs35l41->speaker_id, "bin");
if (ret)
goto coeff_err;
return 0;
}
/* try cirrus/part-dspN-fwtype-sub.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT, cs35l41->acpi_subsystem_id,
NULL, -1, "wmfw");
if (!ret) {
/* try cirrus/part-dspN-fwtype-sub<-spkidN><-ampname>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, cs35l41->amp_name,
cs35l41->speaker_id, "bin");
if (ret)
/* try cirrus/part-dspN-fwtype-sub<-spkidN>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware,
coeff_filename, CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, NULL,
cs35l41->speaker_id, "bin");
if (ret)
goto coeff_err;
}
return ret;
coeff_err:
release_firmware(*wmfw_firmware);
kfree(*wmfw_filename);
return ret;
}
static int cs35l41_fallback_firmware_file(struct cs35l41_hda *cs35l41,
const struct firmware **wmfw_firmware,
char **wmfw_filename,
const struct firmware **coeff_firmware,
char **coeff_filename)
{
int ret;
/* Handle fallback */
dev_warn(cs35l41->dev, "Falling back to default firmware.\n");
/* fallback try cirrus/part-dspN-fwtype.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT, NULL, NULL, -1, "wmfw");
if (ret)
goto err;
/* fallback try cirrus/part-dspN-fwtype.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT, NULL, NULL, -1, "bin");
if (ret) {
release_firmware(*wmfw_firmware);
kfree(*wmfw_filename);
goto err;
}
return 0;
err:
dev_warn(cs35l41->dev, "Unable to find firmware and tuning\n");
return ret;
}
static int cs35l41_request_firmware_files(struct cs35l41_hda *cs35l41,
const struct firmware **wmfw_firmware,
char **wmfw_filename,
const struct firmware **coeff_firmware,
char **coeff_filename)
{
int ret;
if (cs35l41->speaker_id > -1) {
ret = cs35l41_request_firmware_files_spkid(cs35l41, wmfw_firmware, wmfw_filename,
coeff_firmware, coeff_filename);
goto out;
}
/* try cirrus/part-dspN-fwtype-sub<-ampname>.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT, cs35l41->acpi_subsystem_id,
cs35l41->amp_name, -1, "wmfw");
if (!ret) {
/* try cirrus/part-dspN-fwtype-sub<-ampname>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, cs35l41->amp_name,
-1, "bin");
if (ret)
goto coeff_err;
goto out;
}
/* try cirrus/part-dspN-fwtype-sub.wmfw */
ret = cs35l41_request_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
CS35L41_FIRMWARE_ROOT, cs35l41->acpi_subsystem_id,
NULL, -1, "wmfw");
if (!ret) {
/* try cirrus/part-dspN-fwtype-sub<-ampname>.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id,
cs35l41->amp_name, -1, "bin");
if (ret)
/* try cirrus/part-dspN-fwtype-sub.bin */
ret = cs35l41_request_firmware_file(cs35l41, coeff_firmware, coeff_filename,
CS35L41_FIRMWARE_ROOT,
cs35l41->acpi_subsystem_id, NULL, -1,
"bin");
if (ret)
goto coeff_err;
}
out:
if (ret)
/* if all attempts at finding firmware fail, try fallback */
goto fallback;
return 0;
coeff_err:
release_firmware(*wmfw_firmware);
kfree(*wmfw_filename);
fallback:
return cs35l41_fallback_firmware_file(cs35l41, wmfw_firmware, wmfw_filename,
coeff_firmware, coeff_filename);
}
#if IS_ENABLED(CONFIG_EFI)
static int cs35l41_apply_calibration(struct cs35l41_hda *cs35l41, __be32 ambient, __be32 r0,
__be32 status, __be32 checksum)
{
int ret;
ret = hda_cs_dsp_write_ctl(&cs35l41->cs_dsp, CAL_AMBIENT_DSP_CTL_NAME, CAL_DSP_CTL_TYPE,
CAL_DSP_CTL_ALG, &ambient, 4);
if (ret) {
dev_err(cs35l41->dev, "Cannot Write Control: %s - %d\n", CAL_AMBIENT_DSP_CTL_NAME,
ret);
return ret;
}
ret = hda_cs_dsp_write_ctl(&cs35l41->cs_dsp, CAL_R_DSP_CTL_NAME, CAL_DSP_CTL_TYPE,
CAL_DSP_CTL_ALG, &r0, 4);
if (ret) {
dev_err(cs35l41->dev, "Cannot Write Control: %s - %d\n", CAL_R_DSP_CTL_NAME, ret);
return ret;
}
ret = hda_cs_dsp_write_ctl(&cs35l41->cs_dsp, CAL_STATUS_DSP_CTL_NAME, CAL_DSP_CTL_TYPE,
CAL_DSP_CTL_ALG, &status, 4);
if (ret) {
dev_err(cs35l41->dev, "Cannot Write Control: %s - %d\n", CAL_STATUS_DSP_CTL_NAME,
ret);
return ret;
}
ret = hda_cs_dsp_write_ctl(&cs35l41->cs_dsp, CAL_CHECKSUM_DSP_CTL_NAME, CAL_DSP_CTL_TYPE,
CAL_DSP_CTL_ALG, &checksum, 4);
if (ret) {
dev_err(cs35l41->dev, "Cannot Write Control: %s - %d\n", CAL_CHECKSUM_DSP_CTL_NAME,
ret);
return ret;
}
return 0;
}
static int cs35l41_save_calibration(struct cs35l41_hda *cs35l41)
{
static efi_guid_t efi_guid = EFI_GUID(0x02f9af02, 0x7734, 0x4233, 0xb4, 0x3d, 0x93, 0xfe,
0x5a, 0xa3, 0x5d, 0xb3);
static efi_char16_t efi_name[] = L"CirrusSmartAmpCalibrationData";
const struct cs35l41_amp_efi_data *efi_data;
const struct cs35l41_amp_cal_data *cl;
unsigned long data_size = 0;
efi_status_t status;
int ret = 0;
u8 *data = NULL;
u32 attr;
/* Get real size of UEFI variable */
status = efi.get_variable(efi_name, &efi_guid, &attr, &data_size, data);
if (status == EFI_BUFFER_TOO_SMALL) {
ret = -ENODEV;
/* Allocate data buffer of data_size bytes */
data = vmalloc(data_size);
if (!data)
return -ENOMEM;
/* Get variable contents into buffer */
status = efi.get_variable(efi_name, &efi_guid, &attr, &data_size, data);
if (status == EFI_SUCCESS) {
efi_data = (struct cs35l41_amp_efi_data *)data;
dev_dbg(cs35l41->dev, "Calibration: Size=%d, Amp Count=%d\n",
efi_data->size, efi_data->count);
if (efi_data->count > cs35l41->index) {
cl = &efi_data->data[cs35l41->index];
dev_dbg(cs35l41->dev,
"Calibration: Ambient=%02x, Status=%02x, R0=%d\n",
cl->calAmbient, cl->calStatus, cl->calR);
/* Calibration can only be applied whilst the DSP is not running */
ret = cs35l41_apply_calibration(cs35l41,
cpu_to_be32(cl->calAmbient),
cpu_to_be32(cl->calR),
cpu_to_be32(cl->calStatus),
cpu_to_be32(cl->calR + 1));
}
}
vfree(data);
}
return ret;
}
#else
static int cs35l41_save_calibration(struct cs35l41_hda *cs35l41)
{
dev_warn(cs35l41->dev, "Calibration not supported without EFI support.\n");
return 0;
}
#endif
static int cs35l41_init_dsp(struct cs35l41_hda *cs35l41)
{
const struct firmware *coeff_firmware = NULL;
const struct firmware *wmfw_firmware = NULL;
struct cs_dsp *dsp = &cs35l41->cs_dsp;
char *coeff_filename = NULL;
char *wmfw_filename = NULL;
int ret;
if (!cs35l41->halo_initialized) {
cs35l41_configure_cs_dsp(cs35l41->dev, cs35l41->regmap, dsp);
dsp->client_ops = &client_ops;
ret = cs_dsp_halo_init(&cs35l41->cs_dsp);
if (ret)
return ret;
cs35l41->halo_initialized = true;
}
ret = cs35l41_request_firmware_files(cs35l41, &wmfw_firmware, &wmfw_filename,
&coeff_firmware, &coeff_filename);
if (ret < 0)
return ret;
dev_dbg(cs35l41->dev, "Loading WMFW Firmware: %s\n", wmfw_filename);
if (coeff_filename)
dev_dbg(cs35l41->dev, "Loading Coefficient File: %s\n", coeff_filename);
else
dev_warn(cs35l41->dev, "No Coefficient File available.\n");
ret = cs_dsp_power_up(dsp, wmfw_firmware, wmfw_filename, coeff_firmware, coeff_filename,
hda_cs_dsp_fw_ids[cs35l41->firmware_type]);
if (ret)
goto err_release;
cs35l41_add_controls(cs35l41);
ret = cs35l41_save_calibration(cs35l41);
err_release:
release_firmware(wmfw_firmware);
release_firmware(coeff_firmware);
kfree(wmfw_filename);
kfree(coeff_filename);
return ret;
}
static void cs35l41_shutdown_dsp(struct cs35l41_hda *cs35l41)
{
struct cs_dsp *dsp = &cs35l41->cs_dsp;
cs_dsp_stop(dsp);
cs_dsp_power_down(dsp);
cs35l41->firmware_running = false;
dev_dbg(cs35l41->dev, "Unloaded Firmware\n");
}
static void cs35l41_remove_dsp(struct cs35l41_hda *cs35l41)
{
struct cs_dsp *dsp = &cs35l41->cs_dsp;
cancel_work_sync(&cs35l41->fw_load_work);
mutex_lock(&cs35l41->fw_mutex);
cs35l41_shutdown_dsp(cs35l41);
cs_dsp_remove(dsp);
cs35l41->halo_initialized = false;
mutex_unlock(&cs35l41->fw_mutex);
}
/* Protection release cycle to get the speaker out of Safe-Mode */
static void cs35l41_error_release(struct device *dev, struct regmap *regmap, unsigned int mask)
{
regmap_write(regmap, CS35L41_PROTECT_REL_ERR_IGN, 0);
regmap_set_bits(regmap, CS35L41_PROTECT_REL_ERR_IGN, mask);
regmap_clear_bits(regmap, CS35L41_PROTECT_REL_ERR_IGN, mask);
}
/* Clear all errors to release safe mode. Global Enable must be cleared first. */
static void cs35l41_irq_release(struct cs35l41_hda *cs35l41)
{
cs35l41_error_release(cs35l41->dev, cs35l41->regmap, cs35l41->irq_errors);
cs35l41->irq_errors = 0;
}
static void cs35l41_hda_play_start(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
struct regmap *reg = cs35l41->regmap;
dev_dbg(dev, "Play (Start)\n");
if (cs35l41->playback_started) {
dev_dbg(dev, "Playback already started.");
return;
}
cs35l41->playback_started = true;
if (cs35l41->firmware_running) {
regmap_multi_reg_write(reg, cs35l41_hda_config_dsp,
ARRAY_SIZE(cs35l41_hda_config_dsp));
regmap_update_bits(reg, CS35L41_PWR_CTRL2,
CS35L41_VMON_EN_MASK | CS35L41_IMON_EN_MASK,
1 << CS35L41_VMON_EN_SHIFT | 1 << CS35L41_IMON_EN_SHIFT);
cs35l41_set_cspl_mbox_cmd(cs35l41->dev, reg, CSPL_MBOX_CMD_RESUME);
} else {
regmap_multi_reg_write(reg, cs35l41_hda_config, ARRAY_SIZE(cs35l41_hda_config));
}
regmap_update_bits(reg, CS35L41_PWR_CTRL2, CS35L41_AMP_EN_MASK, 1 << CS35L41_AMP_EN_SHIFT);
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
regmap_write(reg, CS35L41_GPIO1_CTRL1, 0x00008001);
}
static void cs35l41_hda_play_done(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
struct regmap *reg = cs35l41->regmap;
dev_dbg(dev, "Play (Complete)\n");
cs35l41_global_enable(dev, reg, cs35l41->hw_cfg.bst_type, 1, NULL,
cs35l41->firmware_running);
if (cs35l41->firmware_running) {
regmap_multi_reg_write(reg, cs35l41_hda_unmute_dsp,
ARRAY_SIZE(cs35l41_hda_unmute_dsp));
} else {
regmap_multi_reg_write(reg, cs35l41_hda_unmute,
ARRAY_SIZE(cs35l41_hda_unmute));
}
}
static void cs35l41_hda_pause_start(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
struct regmap *reg = cs35l41->regmap;
dev_dbg(dev, "Pause (Start)\n");
regmap_multi_reg_write(reg, cs35l41_hda_mute, ARRAY_SIZE(cs35l41_hda_mute));
cs35l41_global_enable(dev, reg, cs35l41->hw_cfg.bst_type, 0, NULL,
cs35l41->firmware_running);
}
static void cs35l41_hda_pause_done(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
struct regmap *reg = cs35l41->regmap;
dev_dbg(dev, "Pause (Complete)\n");
regmap_update_bits(reg, CS35L41_PWR_CTRL2, CS35L41_AMP_EN_MASK, 0 << CS35L41_AMP_EN_SHIFT);
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
regmap_write(reg, CS35L41_GPIO1_CTRL1, 0x00000001);
if (cs35l41->firmware_running) {
cs35l41_set_cspl_mbox_cmd(dev, reg, CSPL_MBOX_CMD_PAUSE);
regmap_update_bits(reg, CS35L41_PWR_CTRL2,
CS35L41_VMON_EN_MASK | CS35L41_IMON_EN_MASK,
0 << CS35L41_VMON_EN_SHIFT | 0 << CS35L41_IMON_EN_SHIFT);
}
cs35l41_irq_release(cs35l41);
cs35l41->playback_started = false;
}
static void cs35l41_hda_pre_playback_hook(struct device *dev, int action)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
switch (action) {
case HDA_GEN_PCM_ACT_CLEANUP:
mutex_lock(&cs35l41->fw_mutex);
cs35l41_hda_pause_start(dev);
mutex_unlock(&cs35l41->fw_mutex);
break;
default:
break;
}
}
static void cs35l41_hda_playback_hook(struct device *dev, int action)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
switch (action) {
case HDA_GEN_PCM_ACT_OPEN:
/*
* All amps must be resumed before we can start playing back.
* This ensures, for external boost, that all amps are in AMP_SAFE mode.
* Do this in HDA_GEN_PCM_ACT_OPEN, since this is run prior to any of the
* other actions.
*/
pm_runtime_get_sync(dev);
break;
case HDA_GEN_PCM_ACT_PREPARE:
mutex_lock(&cs35l41->fw_mutex);
cs35l41_hda_play_start(dev);
mutex_unlock(&cs35l41->fw_mutex);
break;
case HDA_GEN_PCM_ACT_CLEANUP:
mutex_lock(&cs35l41->fw_mutex);
cs35l41_hda_pause_done(dev);
mutex_unlock(&cs35l41->fw_mutex);
break;
case HDA_GEN_PCM_ACT_CLOSE:
mutex_lock(&cs35l41->fw_mutex);
if (!cs35l41->firmware_running && cs35l41->request_fw_load &&
!cs35l41->fw_request_ongoing) {
dev_info(dev, "Requesting Firmware Load after HDA_GEN_PCM_ACT_CLOSE\n");
cs35l41->fw_request_ongoing = true;
schedule_work(&cs35l41->fw_load_work);
}
mutex_unlock(&cs35l41->fw_mutex);
/*
* Playback must be finished for all amps before we start runtime suspend.
* This ensures no amps are playing back when we start putting them to sleep.
*/
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
break;
default:
break;
}
}
static void cs35l41_hda_post_playback_hook(struct device *dev, int action)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
switch (action) {
case HDA_GEN_PCM_ACT_PREPARE:
mutex_lock(&cs35l41->fw_mutex);
cs35l41_hda_play_done(dev);
mutex_unlock(&cs35l41->fw_mutex);
break;
default:
break;
}
}
static int cs35l41_hda_channel_map(struct device *dev, unsigned int tx_num, unsigned int *tx_slot,
unsigned int rx_num, unsigned int *rx_slot)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
static const char * const channel_name[] = { "L", "R" };
if (!cs35l41->amp_name) {
if (*rx_slot >= ARRAY_SIZE(channel_name))
return -EINVAL;
cs35l41->amp_name = devm_kasprintf(cs35l41->dev, GFP_KERNEL, "%s%d",
channel_name[*rx_slot], cs35l41->channel_index);
if (!cs35l41->amp_name)
return -ENOMEM;
}
return cs35l41_set_channels(cs35l41->dev, cs35l41->regmap, tx_num, tx_slot, rx_num,
rx_slot);
}
static int cs35l41_ready_for_reset(struct cs35l41_hda *cs35l41)
{
int ret = 0;
mutex_lock(&cs35l41->fw_mutex);
if (cs35l41->firmware_running) {
regcache_cache_only(cs35l41->regmap, false);
ret = cs35l41_exit_hibernate(cs35l41->dev, cs35l41->regmap);
if (ret) {
dev_warn(cs35l41->dev, "Unable to exit Hibernate.");
goto err;
}
/* Test key needs to be unlocked to allow the OTP settings to re-apply */
cs35l41_test_key_unlock(cs35l41->dev, cs35l41->regmap);
ret = regcache_sync(cs35l41->regmap);
cs35l41_test_key_lock(cs35l41->dev, cs35l41->regmap);
if (ret) {
dev_err(cs35l41->dev, "Failed to restore register cache: %d\n", ret);
goto err;
}
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
cs35l41_init_boost(cs35l41->dev, cs35l41->regmap, &cs35l41->hw_cfg);
cs35l41_shutdown_dsp(cs35l41);
cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type);
}
err:
regcache_cache_only(cs35l41->regmap, true);
regcache_mark_dirty(cs35l41->regmap);
mutex_unlock(&cs35l41->fw_mutex);
return ret;
}
static int cs35l41_system_suspend_prep(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
dev_dbg(cs35l41->dev, "System Suspend Prepare\n");
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST_NO_VSPK_SWITCH) {
dev_err_once(cs35l41->dev, "System Suspend not supported\n");
return 0; /* don't block the whole system suspend */
}
mutex_lock(&cs35l41->fw_mutex);
if (cs35l41->playback_started)
cs35l41_hda_pause_start(dev);
mutex_unlock(&cs35l41->fw_mutex);
return 0;
}
static int cs35l41_system_suspend(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
int ret;
dev_dbg(cs35l41->dev, "System Suspend\n");
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST_NO_VSPK_SWITCH) {
dev_err_once(cs35l41->dev, "System Suspend not supported\n");
return 0; /* don't block the whole system suspend */
}
mutex_lock(&cs35l41->fw_mutex);
if (cs35l41->playback_started)
cs35l41_hda_pause_done(dev);
mutex_unlock(&cs35l41->fw_mutex);
ret = pm_runtime_force_suspend(dev);
if (ret) {
dev_err(dev, "System Suspend Failed, unable to runtime suspend: %d\n", ret);
return ret;
}
/* Shutdown DSP before system suspend */
ret = cs35l41_ready_for_reset(cs35l41);
if (ret)
dev_err(dev, "System Suspend Failed, not ready for Reset: %d\n", ret);
/*
* Reset GPIO may be shared, so cannot reset here.
* However beyond this point, amps may be powered down.
*/
return ret;
}
static int cs35l41_system_resume(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
int ret;
dev_dbg(cs35l41->dev, "System Resume\n");
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST_NO_VSPK_SWITCH) {
dev_err_once(cs35l41->dev, "System Resume not supported\n");
return 0; /* don't block the whole system resume */
}
if (cs35l41->reset_gpio) {
usleep_range(2000, 2100);
gpiod_set_value_cansleep(cs35l41->reset_gpio, 1);
}
usleep_range(2000, 2100);
ret = pm_runtime_force_resume(dev);
if (ret) {
dev_err(dev, "System Resume Failed: Unable to runtime resume: %d\n", ret);
return ret;
}
mutex_lock(&cs35l41->fw_mutex);
if (cs35l41->request_fw_load && !cs35l41->fw_request_ongoing) {
cs35l41->fw_request_ongoing = true;
schedule_work(&cs35l41->fw_load_work);
}
mutex_unlock(&cs35l41->fw_mutex);
return ret;
}
static int cs35l41_runtime_idle(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST_NO_VSPK_SWITCH)
return -EBUSY; /* suspend not supported yet on this model */
return 0;
}
static int cs35l41_runtime_suspend(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
int ret = 0;
dev_dbg(cs35l41->dev, "Runtime Suspend\n");
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST_NO_VSPK_SWITCH) {
dev_dbg(cs35l41->dev, "Runtime Suspend not supported\n");
return 0;
}
mutex_lock(&cs35l41->fw_mutex);
if (cs35l41->firmware_running) {
ret = cs35l41_enter_hibernate(cs35l41->dev, cs35l41->regmap,
cs35l41->hw_cfg.bst_type);
if (ret)
goto err;
} else {
cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type);
}
regcache_cache_only(cs35l41->regmap, true);
regcache_mark_dirty(cs35l41->regmap);
err:
mutex_unlock(&cs35l41->fw_mutex);
return ret;
}
static int cs35l41_runtime_resume(struct device *dev)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
int ret = 0;
dev_dbg(cs35l41->dev, "Runtime Resume\n");
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST_NO_VSPK_SWITCH) {
dev_dbg(cs35l41->dev, "Runtime Resume not supported\n");
return 0;
}
mutex_lock(&cs35l41->fw_mutex);
regcache_cache_only(cs35l41->regmap, false);
if (cs35l41->firmware_running) {
ret = cs35l41_exit_hibernate(cs35l41->dev, cs35l41->regmap);
if (ret) {
dev_warn(cs35l41->dev, "Unable to exit Hibernate.");
goto err;
}
}
/* Test key needs to be unlocked to allow the OTP settings to re-apply */
cs35l41_test_key_unlock(cs35l41->dev, cs35l41->regmap);
ret = regcache_sync(cs35l41->regmap);
cs35l41_test_key_lock(cs35l41->dev, cs35l41->regmap);
if (ret) {
dev_err(cs35l41->dev, "Failed to restore register cache: %d\n", ret);
goto err;
}
if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
cs35l41_init_boost(cs35l41->dev, cs35l41->regmap, &cs35l41->hw_cfg);
err:
mutex_unlock(&cs35l41->fw_mutex);
return ret;
}
static int cs35l41_smart_amp(struct cs35l41_hda *cs35l41)
{
__be32 halo_sts;
int ret;
ret = cs35l41_init_dsp(cs35l41);
if (ret) {
dev_warn(cs35l41->dev, "Cannot Initialize Firmware. Error: %d\n", ret);
goto clean_dsp;
}
ret = cs35l41_write_fs_errata(cs35l41->dev, cs35l41->regmap);
if (ret) {
dev_err(cs35l41->dev, "Cannot Write FS Errata: %d\n", ret);
goto clean_dsp;
}
ret = cs_dsp_run(&cs35l41->cs_dsp);
if (ret) {
dev_err(cs35l41->dev, "Fail to start dsp: %d\n", ret);
goto clean_dsp;
}
ret = read_poll_timeout(hda_cs_dsp_read_ctl, ret,
be32_to_cpu(halo_sts) == HALO_STATE_CODE_RUN,
1000, 15000, false, &cs35l41->cs_dsp, HALO_STATE_DSP_CTL_NAME,
HALO_STATE_DSP_CTL_TYPE, HALO_STATE_DSP_CTL_ALG,
&halo_sts, sizeof(halo_sts));
if (ret) {
dev_err(cs35l41->dev, "Timeout waiting for HALO Core to start. State: %u\n",
halo_sts);
goto clean_dsp;
}
ret = cs35l41_set_cspl_mbox_cmd(cs35l41->dev, cs35l41->regmap, CSPL_MBOX_CMD_PAUSE);
if (ret) {
dev_err(cs35l41->dev, "Error waiting for DSP to pause: %u\n", ret);
goto clean_dsp;
}
cs35l41->firmware_running = true;
return 0;
clean_dsp:
cs35l41_shutdown_dsp(cs35l41);
return ret;
}
static void cs35l41_load_firmware(struct cs35l41_hda *cs35l41, bool load)
{
if (cs35l41->firmware_running && !load) {
dev_dbg(cs35l41->dev, "Unloading Firmware\n");
cs35l41_shutdown_dsp(cs35l41);
} else if (!cs35l41->firmware_running && load) {
dev_dbg(cs35l41->dev, "Loading Firmware\n");
cs35l41_smart_amp(cs35l41);
} else {
dev_dbg(cs35l41->dev, "Unable to Load firmware.\n");
}
}
static int cs35l41_fw_load_ctl_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct cs35l41_hda *cs35l41 = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = cs35l41->request_fw_load;
return 0;
}
static void cs35l41_fw_load_work(struct work_struct *work)
{
struct cs35l41_hda *cs35l41 = container_of(work, struct cs35l41_hda, fw_load_work);
pm_runtime_get_sync(cs35l41->dev);