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kernel/sound/soc/intel/skylake/skl.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* skl.c - Implementation of ASoC Intel SKL HD Audio driver
*
* Copyright (C) 2014-2015 Intel Corp
* Author: Jeeja KP <jeeja.kp@intel.com>
*
* Derived mostly from Intel HDA driver with following copyrights:
* Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
* PeiSen Hou <pshou@realtek.com.tw>
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include <sound/pcm.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include <sound/hda_register.h>
#include <sound/hdaudio.h>
#include <sound/hda_i915.h>
#include <sound/hda_codec.h>
#include <sound/intel-nhlt.h>
#include <sound/intel-dsp-config.h>
#include "skl.h"
#include "skl-sst-dsp.h"
#include "skl-sst-ipc.h"
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
#include "../../../soc/codecs/hdac_hda.h"
#endif
static int skl_pci_binding;
module_param_named(pci_binding, skl_pci_binding, int, 0444);
MODULE_PARM_DESC(pci_binding, "PCI binding (0=auto, 1=only legacy, 2=only asoc");
/*
* initialize the PCI registers
*/
static void skl_update_pci_byte(struct pci_dev *pci, unsigned int reg,
unsigned char mask, unsigned char val)
{
unsigned char data;
pci_read_config_byte(pci, reg, &data);
data &= ~mask;
data |= (val & mask);
pci_write_config_byte(pci, reg, data);
}
static void skl_init_pci(struct skl_dev *skl)
{
struct hdac_bus *bus = skl_to_bus(skl);
/*
* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
* TCSEL == Traffic Class Select Register, which sets PCI express QOS
* Ensuring these bits are 0 clears playback static on some HD Audio
* codecs.
* The PCI register TCSEL is defined in the Intel manuals.
*/
dev_dbg(bus->dev, "Clearing TCSEL\n");
skl_update_pci_byte(skl->pci, AZX_PCIREG_TCSEL, 0x07, 0);
}
static void update_pci_dword(struct pci_dev *pci,
unsigned int reg, u32 mask, u32 val)
{
u32 data = 0;
pci_read_config_dword(pci, reg, &data);
data &= ~mask;
data |= (val & mask);
pci_write_config_dword(pci, reg, data);
}
/*
* skl_enable_miscbdcge - enable/dsiable CGCTL.MISCBDCGE bits
*
* @dev: device pointer
* @enable: enable/disable flag
*/
static void skl_enable_miscbdcge(struct device *dev, bool enable)
{
struct pci_dev *pci = to_pci_dev(dev);
u32 val;
val = enable ? AZX_CGCTL_MISCBDCGE_MASK : 0;
update_pci_dword(pci, AZX_PCIREG_CGCTL, AZX_CGCTL_MISCBDCGE_MASK, val);
}
/**
* skl_clock_power_gating: Enable/Disable clock and power gating
*
* @dev: Device pointer
* @enable: Enable/Disable flag
*/
static void skl_clock_power_gating(struct device *dev, bool enable)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
u32 val;
/* Update PDCGE bit of CGCTL register */
val = enable ? AZX_CGCTL_ADSPDCGE : 0;
update_pci_dword(pci, AZX_PCIREG_CGCTL, AZX_CGCTL_ADSPDCGE, val);
/* Update L1SEN bit of EM2 register */
val = enable ? AZX_REG_VS_EM2_L1SEN : 0;
snd_hdac_chip_updatel(bus, VS_EM2, AZX_REG_VS_EM2_L1SEN, val);
/* Update ADSPPGD bit of PGCTL register */
val = enable ? 0 : AZX_PGCTL_ADSPPGD;
update_pci_dword(pci, AZX_PCIREG_PGCTL, AZX_PGCTL_ADSPPGD, val);
}
/*
* While performing reset, controller may not come back properly causing
* issues, so recommendation is to set CGCTL.MISCBDCGE to 0 then do reset
* (init chip) and then again set CGCTL.MISCBDCGE to 1
*/
static int skl_init_chip(struct hdac_bus *bus, bool full_reset)
{
struct hdac_ext_link *hlink;
int ret;
snd_hdac_set_codec_wakeup(bus, true);
skl_enable_miscbdcge(bus->dev, false);
ret = snd_hdac_bus_init_chip(bus, full_reset);
/* Reset stream-to-link mapping */
list_for_each_entry(hlink, &bus->hlink_list, list)
writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV);
skl_enable_miscbdcge(bus->dev, true);
snd_hdac_set_codec_wakeup(bus, false);
return ret;
}
void skl_update_d0i3c(struct device *dev, bool enable)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
u8 reg;
int timeout = 50;
reg = snd_hdac_chip_readb(bus, VS_D0I3C);
/* Do not write to D0I3C until command in progress bit is cleared */
while ((reg & AZX_REG_VS_D0I3C_CIP) && --timeout) {
udelay(10);
reg = snd_hdac_chip_readb(bus, VS_D0I3C);
}
/* Highly unlikely. But if it happens, flag error explicitly */
if (!timeout) {
dev_err(bus->dev, "Before D0I3C update: D0I3C CIP timeout\n");
return;
}
if (enable)
reg = reg | AZX_REG_VS_D0I3C_I3;
else
reg = reg & (~AZX_REG_VS_D0I3C_I3);
snd_hdac_chip_writeb(bus, VS_D0I3C, reg);
timeout = 50;
/* Wait for cmd in progress to be cleared before exiting the function */
reg = snd_hdac_chip_readb(bus, VS_D0I3C);
while ((reg & AZX_REG_VS_D0I3C_CIP) && --timeout) {
udelay(10);
reg = snd_hdac_chip_readb(bus, VS_D0I3C);
}
/* Highly unlikely. But if it happens, flag error explicitly */
if (!timeout) {
dev_err(bus->dev, "After D0I3C update: D0I3C CIP timeout\n");
return;
}
dev_dbg(bus->dev, "D0I3C register = 0x%x\n",
snd_hdac_chip_readb(bus, VS_D0I3C));
}
/**
* skl_dum_set - set DUM bit in EM2 register
* @bus: HD-audio core bus
*
* Addresses incorrect position reporting for capture streams.
* Used on device power up.
*/
static void skl_dum_set(struct hdac_bus *bus)
{
/* For the DUM bit to be set, CRST needs to be out of reset state */
if (!(snd_hdac_chip_readb(bus, GCTL) & AZX_GCTL_RESET)) {
skl_enable_miscbdcge(bus->dev, false);
snd_hdac_bus_exit_link_reset(bus);
skl_enable_miscbdcge(bus->dev, true);
}
snd_hdac_chip_updatel(bus, VS_EM2, AZX_VS_EM2_DUM, AZX_VS_EM2_DUM);
}
/* called from IRQ */
static void skl_stream_update(struct hdac_bus *bus, struct hdac_stream *hstr)
{
snd_pcm_period_elapsed(hstr->substream);
}
static irqreturn_t skl_interrupt(int irq, void *dev_id)
{
struct hdac_bus *bus = dev_id;
u32 status;
if (!pm_runtime_active(bus->dev))
return IRQ_NONE;
spin_lock(&bus->reg_lock);
status = snd_hdac_chip_readl(bus, INTSTS);
if (status == 0 || status == 0xffffffff) {
spin_unlock(&bus->reg_lock);
return IRQ_NONE;
}
/* clear rirb int */
status = snd_hdac_chip_readb(bus, RIRBSTS);
if (status & RIRB_INT_MASK) {
if (status & RIRB_INT_RESPONSE)
snd_hdac_bus_update_rirb(bus);
snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);
}
spin_unlock(&bus->reg_lock);
return snd_hdac_chip_readl(bus, INTSTS) ? IRQ_WAKE_THREAD : IRQ_HANDLED;
}
static irqreturn_t skl_threaded_handler(int irq, void *dev_id)
{
struct hdac_bus *bus = dev_id;
u32 status;
status = snd_hdac_chip_readl(bus, INTSTS);
snd_hdac_bus_handle_stream_irq(bus, status, skl_stream_update);
return IRQ_HANDLED;
}
static int skl_acquire_irq(struct hdac_bus *bus, int do_disconnect)
{
struct skl_dev *skl = bus_to_skl(bus);
int ret;
ret = request_threaded_irq(skl->pci->irq, skl_interrupt,
skl_threaded_handler,
IRQF_SHARED,
KBUILD_MODNAME, bus);
if (ret) {
dev_err(bus->dev,
"unable to grab IRQ %d, disabling device\n",
skl->pci->irq);
return ret;
}
bus->irq = skl->pci->irq;
pci_intx(skl->pci, 1);
return 0;
}
static int skl_suspend_late(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
struct skl_dev *skl = bus_to_skl(bus);
return skl_suspend_late_dsp(skl);
}
#ifdef CONFIG_PM
static int _skl_suspend(struct hdac_bus *bus)
{
struct skl_dev *skl = bus_to_skl(bus);
struct pci_dev *pci = to_pci_dev(bus->dev);
int ret;
snd_hdac_ext_bus_link_power_down_all(bus);
ret = skl_suspend_dsp(skl);
if (ret < 0)
return ret;
snd_hdac_bus_stop_chip(bus);
update_pci_dword(pci, AZX_PCIREG_PGCTL,
AZX_PGCTL_LSRMD_MASK, AZX_PGCTL_LSRMD_MASK);
skl_enable_miscbdcge(bus->dev, false);
snd_hdac_bus_enter_link_reset(bus);
skl_enable_miscbdcge(bus->dev, true);
skl_cleanup_resources(skl);
return 0;
}
static int _skl_resume(struct hdac_bus *bus)
{
struct skl_dev *skl = bus_to_skl(bus);
skl_init_pci(skl);
skl_dum_set(bus);
skl_init_chip(bus, true);
return skl_resume_dsp(skl);
}
#endif
#ifdef CONFIG_PM_SLEEP
/*
* power management
*/
static int skl_suspend(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
struct skl_dev *skl = bus_to_skl(bus);
int ret;
/*
* Do not suspend if streams which are marked ignore suspend are
* running, we need to save the state for these and continue
*/
if (skl->supend_active) {
/* turn off the links and stop the CORB/RIRB DMA if it is On */
snd_hdac_ext_bus_link_power_down_all(bus);
if (bus->cmd_dma_state)
snd_hdac_bus_stop_cmd_io(bus);
enable_irq_wake(bus->irq);
pci_save_state(pci);
} else {
ret = _skl_suspend(bus);
if (ret < 0)
return ret;
skl->fw_loaded = false;
}
return 0;
}
static int skl_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
struct skl_dev *skl = bus_to_skl(bus);
struct hdac_ext_link *hlink;
int ret;
/*
* resume only when we are not in suspend active, otherwise need to
* restore the device
*/
if (skl->supend_active) {
pci_restore_state(pci);
snd_hdac_ext_bus_link_power_up_all(bus);
disable_irq_wake(bus->irq);
/*
* turn On the links which are On before active suspend
* and start the CORB/RIRB DMA if On before
* active suspend.
*/
list_for_each_entry(hlink, &bus->hlink_list, list) {
if (hlink->ref_count)
snd_hdac_ext_bus_link_power_up(hlink);
}
ret = 0;
if (bus->cmd_dma_state)
snd_hdac_bus_init_cmd_io(bus);
} else {
ret = _skl_resume(bus);
}
return ret;
}
#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_PM
static int skl_runtime_suspend(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
dev_dbg(bus->dev, "in %s\n", __func__);
return _skl_suspend(bus);
}
static int skl_runtime_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_bus *bus = pci_get_drvdata(pci);
dev_dbg(bus->dev, "in %s\n", __func__);
return _skl_resume(bus);
}
#endif /* CONFIG_PM */
static const struct dev_pm_ops skl_pm = {
SET_SYSTEM_SLEEP_PM_OPS(skl_suspend, skl_resume)
SET_RUNTIME_PM_OPS(skl_runtime_suspend, skl_runtime_resume, NULL)
.suspend_late = skl_suspend_late,
};
/*
* destructor
*/
static int skl_free(struct hdac_bus *bus)
{
struct skl_dev *skl = bus_to_skl(bus);
skl->init_done = 0; /* to be sure */
snd_hdac_stop_streams_and_chip(bus);
if (bus->irq >= 0)
free_irq(bus->irq, (void *)bus);
snd_hdac_bus_free_stream_pages(bus);
snd_hdac_ext_stream_free_all(bus);
snd_hdac_ext_link_free_all(bus);
if (bus->remap_addr)
iounmap(bus->remap_addr);
pci_release_regions(skl->pci);
pci_disable_device(skl->pci);
snd_hdac_ext_bus_exit(bus);
if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
snd_hdac_i915_exit(bus);
}
return 0;
}
/*
* For each ssp there are 3 clocks (mclk/sclk/sclkfs).
* e.g. for ssp0, clocks will be named as
* "ssp0_mclk", "ssp0_sclk", "ssp0_sclkfs"
* So for skl+, there are 6 ssps, so 18 clocks will be created.
*/
static struct skl_ssp_clk skl_ssp_clks[] = {
{.name = "ssp0_mclk"}, {.name = "ssp1_mclk"}, {.name = "ssp2_mclk"},
{.name = "ssp3_mclk"}, {.name = "ssp4_mclk"}, {.name = "ssp5_mclk"},
{.name = "ssp0_sclk"}, {.name = "ssp1_sclk"}, {.name = "ssp2_sclk"},
{.name = "ssp3_sclk"}, {.name = "ssp4_sclk"}, {.name = "ssp5_sclk"},
{.name = "ssp0_sclkfs"}, {.name = "ssp1_sclkfs"},
{.name = "ssp2_sclkfs"},
{.name = "ssp3_sclkfs"}, {.name = "ssp4_sclkfs"},
{.name = "ssp5_sclkfs"},
};
static struct snd_soc_acpi_mach *skl_find_hda_machine(struct skl_dev *skl,
struct snd_soc_acpi_mach *machines)
{
struct snd_soc_acpi_mach *mach;
/* point to common table */
mach = snd_soc_acpi_intel_hda_machines;
/* all entries in the machine table use the same firmware */
mach->fw_filename = machines->fw_filename;
return mach;
}
static int skl_find_machine(struct skl_dev *skl, void *driver_data)
{
struct hdac_bus *bus = skl_to_bus(skl);
struct snd_soc_acpi_mach *mach = driver_data;
struct skl_machine_pdata *pdata;
mach = snd_soc_acpi_find_machine(mach);
if (!mach) {
dev_dbg(bus->dev, "No matching I2S machine driver found\n");
mach = skl_find_hda_machine(skl, driver_data);
if (!mach) {
dev_err(bus->dev, "No matching machine driver found\n");
return -ENODEV;
}
}
skl->mach = mach;
skl->fw_name = mach->fw_filename;
pdata = mach->pdata;
if (pdata) {
skl->use_tplg_pcm = pdata->use_tplg_pcm;
mach->mach_params.dmic_num =
intel_nhlt_get_dmic_geo(&skl->pci->dev,
skl->nhlt);
}
return 0;
}
static int skl_machine_device_register(struct skl_dev *skl)
{
struct snd_soc_acpi_mach *mach = skl->mach;
struct hdac_bus *bus = skl_to_bus(skl);
struct platform_device *pdev;
int ret;
pdev = platform_device_alloc(mach->drv_name, -1);
if (pdev == NULL) {
dev_err(bus->dev, "platform device alloc failed\n");
return -EIO;
}
mach->mach_params.platform = dev_name(bus->dev);
mach->mach_params.codec_mask = bus->codec_mask;
ret = platform_device_add_data(pdev, (const void *)mach, sizeof(*mach));
if (ret) {
dev_err(bus->dev, "failed to add machine device platform data\n");
platform_device_put(pdev);
return ret;
}
ret = platform_device_add(pdev);
if (ret) {
dev_err(bus->dev, "failed to add machine device\n");
platform_device_put(pdev);
return -EIO;
}
skl->i2s_dev = pdev;
return 0;
}
static void skl_machine_device_unregister(struct skl_dev *skl)
{
if (skl->i2s_dev)
platform_device_unregister(skl->i2s_dev);
}
static int skl_dmic_device_register(struct skl_dev *skl)
{
struct hdac_bus *bus = skl_to_bus(skl);
struct platform_device *pdev;
int ret;
/* SKL has one dmic port, so allocate dmic device for this */
pdev = platform_device_alloc("dmic-codec", -1);
if (!pdev) {
dev_err(bus->dev, "failed to allocate dmic device\n");
return -ENOMEM;
}
ret = platform_device_add(pdev);
if (ret) {
dev_err(bus->dev, "failed to add dmic device: %d\n", ret);
platform_device_put(pdev);
return ret;
}
skl->dmic_dev = pdev;
return 0;
}
static void skl_dmic_device_unregister(struct skl_dev *skl)
{
if (skl->dmic_dev)
platform_device_unregister(skl->dmic_dev);
}
static struct skl_clk_parent_src skl_clk_src[] = {
{ .clk_id = SKL_XTAL, .name = "xtal" },
{ .clk_id = SKL_CARDINAL, .name = "cardinal", .rate = 24576000 },
{ .clk_id = SKL_PLL, .name = "pll", .rate = 96000000 },
};
struct skl_clk_parent_src *skl_get_parent_clk(u8 clk_id)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(skl_clk_src); i++) {
if (skl_clk_src[i].clk_id == clk_id)
return &skl_clk_src[i];
}
return NULL;
}
static void init_skl_xtal_rate(int pci_id)
{
switch (pci_id) {
case PCI_DEVICE_ID_INTEL_HDA_SKL_LP:
case PCI_DEVICE_ID_INTEL_HDA_KBL_LP:
skl_clk_src[0].rate = 24000000;
return;
default:
skl_clk_src[0].rate = 19200000;
return;
}
}
static int skl_clock_device_register(struct skl_dev *skl)
{
struct platform_device_info pdevinfo = {NULL};
struct skl_clk_pdata *clk_pdata;
if (!skl->nhlt)
return 0;
clk_pdata = devm_kzalloc(&skl->pci->dev, sizeof(*clk_pdata),
GFP_KERNEL);
if (!clk_pdata)
return -ENOMEM;
init_skl_xtal_rate(skl->pci->device);
clk_pdata->parent_clks = skl_clk_src;
clk_pdata->ssp_clks = skl_ssp_clks;
clk_pdata->num_clks = ARRAY_SIZE(skl_ssp_clks);
/* Query NHLT to fill the rates and parent */
skl_get_clks(skl, clk_pdata->ssp_clks);
clk_pdata->pvt_data = skl;
/* Register Platform device */
pdevinfo.parent = &skl->pci->dev;
pdevinfo.id = -1;
pdevinfo.name = "skl-ssp-clk";
pdevinfo.data = clk_pdata;
pdevinfo.size_data = sizeof(*clk_pdata);
skl->clk_dev = platform_device_register_full(&pdevinfo);
return PTR_ERR_OR_ZERO(skl->clk_dev);
}
static void skl_clock_device_unregister(struct skl_dev *skl)
{
if (skl->clk_dev)
platform_device_unregister(skl->clk_dev);
}
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
#define IDISP_INTEL_VENDOR_ID 0x80860000
/*
* load the legacy codec driver
*/
static void load_codec_module(struct hda_codec *codec)
{
#ifdef MODULE
char modalias[MODULE_NAME_LEN];
const char *mod = NULL;
snd_hdac_codec_modalias(&codec->core, modalias, sizeof(modalias));
mod = modalias;
dev_dbg(&codec->core.dev, "loading %s codec module\n", mod);
request_module(mod);
#endif
}
#endif /* CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC */
static struct hda_codec *skl_codec_device_init(struct hdac_bus *bus, int addr)
{
struct hda_codec *codec;
int ret;
codec = snd_hda_codec_device_init(to_hda_bus(bus), addr, "ehdaudio%dD%d", bus->idx, addr);
if (IS_ERR(codec)) {
dev_err(bus->dev, "device init failed for hdac device\n");
return codec;
}
codec->core.type = HDA_DEV_ASOC;
ret = snd_hdac_device_register(&codec->core);
if (ret) {
dev_err(bus->dev, "failed to register hdac device\n");
put_device(&codec->core.dev);
return ERR_PTR(ret);
}
return codec;
}
/*
* Probe the given codec address
*/
static int probe_codec(struct hdac_bus *bus, int addr)
{
unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
unsigned int res = -1;
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
struct skl_dev *skl = bus_to_skl(bus);
struct hdac_hda_priv *hda_codec;
#endif
struct hda_codec *codec;
mutex_lock(&bus->cmd_mutex);
snd_hdac_bus_send_cmd(bus, cmd);
snd_hdac_bus_get_response(bus, addr, &res);
mutex_unlock(&bus->cmd_mutex);
if (res == -1)
return -EIO;
dev_dbg(bus->dev, "codec #%d probed OK: %x\n", addr, res);
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
hda_codec = devm_kzalloc(&skl->pci->dev, sizeof(*hda_codec),
GFP_KERNEL);
if (!hda_codec)
return -ENOMEM;
codec = skl_codec_device_init(bus, addr);
if (IS_ERR(codec))
return PTR_ERR(codec);
hda_codec->codec = codec;
hda_codec->dev_index = addr;
dev_set_drvdata(&codec->core.dev, hda_codec);
/* use legacy bus only for HDA codecs, idisp uses ext bus */
if ((res & 0xFFFF0000) != IDISP_INTEL_VENDOR_ID) {
codec->core.type = HDA_DEV_LEGACY;
load_codec_module(hda_codec->codec);
}
return 0;
#else
codec = skl_codec_device_init(bus, addr);
return PTR_ERR_OR_ZERO(codec);
#endif /* CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC */
}
/* Codec initialization */
static void skl_codec_create(struct hdac_bus *bus)
{
int c, max_slots;
max_slots = HDA_MAX_CODECS;
/* First try to probe all given codec slots */
for (c = 0; c < max_slots; c++) {
if ((bus->codec_mask & (1 << c))) {
if (probe_codec(bus, c) < 0) {
/*
* Some BIOSen give you wrong codec addresses
* that don't exist
*/
dev_warn(bus->dev,
"Codec #%d probe error; disabling it...\n", c);
bus->codec_mask &= ~(1 << c);
/*
* More badly, accessing to a non-existing
* codec often screws up the controller bus,
* and disturbs the further communications.
* Thus if an error occurs during probing,
* better to reset the controller bus to get
* back to the sanity state.
*/
snd_hdac_bus_stop_chip(bus);
skl_init_chip(bus, true);
}
}
}
}
static int skl_i915_init(struct hdac_bus *bus)
{
int err;
/*
* The HDMI codec is in GPU so we need to ensure that it is powered
* up and ready for probe
*/
err = snd_hdac_i915_init(bus);
if (err < 0)
return err;
snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
return 0;
}
static void skl_probe_work(struct work_struct *work)
{
struct skl_dev *skl = container_of(work, struct skl_dev, probe_work);
struct hdac_bus *bus = skl_to_bus(skl);
struct hdac_ext_link *hlink;
int err;
if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
err = skl_i915_init(bus);
if (err < 0)
return;
}
skl_init_pci(skl);
skl_dum_set(bus);
err = skl_init_chip(bus, true);
if (err < 0) {
dev_err(bus->dev, "Init chip failed with err: %d\n", err);
goto out_err;
}
/* codec detection */
if (!bus->codec_mask)
dev_info(bus->dev, "no hda codecs found!\n");
/* create codec instances */
skl_codec_create(bus);
/* register platform dai and controls */
err = skl_platform_register(bus->dev);
if (err < 0) {
dev_err(bus->dev, "platform register failed: %d\n", err);
goto out_err;
}
err = skl_machine_device_register(skl);
if (err < 0) {
dev_err(bus->dev, "machine register failed: %d\n", err);
goto out_err;
}
/*
* we are done probing so decrement link counts
*/
list_for_each_entry(hlink, &bus->hlink_list, list)
snd_hdac_ext_bus_link_put(bus, hlink);
if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
/* configure PM */
pm_runtime_put_noidle(bus->dev);
pm_runtime_allow(bus->dev);
skl->init_done = 1;
return;
out_err:
if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
}
/*
* constructor
*/
static int skl_create(struct pci_dev *pci,
struct skl_dev **rskl)
{
struct hdac_ext_bus_ops *ext_ops = NULL;
struct skl_dev *skl;
struct hdac_bus *bus;
struct hda_bus *hbus;
int err;
*rskl = NULL;
err = pci_enable_device(pci);
if (err < 0)
return err;
skl = devm_kzalloc(&pci->dev, sizeof(*skl), GFP_KERNEL);
if (!skl) {
pci_disable_device(pci);
return -ENOMEM;
}
hbus = skl_to_hbus(skl);
bus = skl_to_bus(skl);
INIT_LIST_HEAD(&skl->ppl_list);
INIT_LIST_HEAD(&skl->bind_list);
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
ext_ops = snd_soc_hdac_hda_get_ops();
#endif
snd_hdac_ext_bus_init(bus, &pci->dev, NULL, ext_ops);
bus->use_posbuf = 1;
skl->pci = pci;
INIT_WORK(&skl->probe_work, skl_probe_work);
bus->bdl_pos_adj = 0;
mutex_init(&hbus->prepare_mutex);
hbus->pci = pci;
hbus->mixer_assigned = -1;
hbus->modelname = "sklbus";
*rskl = skl;
return 0;
}
static int skl_first_init(struct hdac_bus *bus)
{
struct skl_dev *skl = bus_to_skl(bus);
struct pci_dev *pci = skl->pci;
int err;
unsigned short gcap;
int cp_streams, pb_streams, start_idx;
err = pci_request_regions(pci, "Skylake HD audio");
if (err < 0)
return err;
bus->addr = pci_resource_start(pci, 0);
bus->remap_addr = pci_ioremap_bar(pci, 0);
if (bus->remap_addr == NULL) {
dev_err(bus->dev, "ioremap error\n");
return -ENXIO;
}
snd_hdac_bus_parse_capabilities(bus);
/* check if PPCAP exists */
if (!bus->ppcap) {
dev_err(bus->dev, "bus ppcap not set, HDAudio or DSP not present?\n");
return -ENODEV;
}
if (skl_acquire_irq(bus, 0) < 0)
return -EBUSY;
pci_set_master(pci);
synchronize_irq(bus->irq);
gcap = snd_hdac_chip_readw(bus, GCAP);
dev_dbg(bus->dev, "chipset global capabilities = 0x%x\n", gcap);
/* read number of streams from GCAP register */
cp_streams = (gcap >> 8) & 0x0f;
pb_streams = (gcap >> 12) & 0x0f;
if (!pb_streams && !cp_streams) {
dev_err(bus->dev, "no streams found in GCAP definitions?\n");
return -EIO;
}
bus->num_streams = cp_streams + pb_streams;
/* allow 64bit DMA address if supported by H/W */
if (dma_set_mask_and_coherent(bus->dev, DMA_BIT_MASK(64)))
dma_set_mask_and_coherent(bus->dev, DMA_BIT_MASK(32));
dma_set_max_seg_size(bus->dev, UINT_MAX);
/* initialize streams */
snd_hdac_ext_stream_init_all
(bus, 0, cp_streams, SNDRV_PCM_STREAM_CAPTURE);
start_idx = cp_streams;
snd_hdac_ext_stream_init_all
(bus, start_idx, pb_streams, SNDRV_PCM_STREAM_PLAYBACK);
err = snd_hdac_bus_alloc_stream_pages(bus);
if (err < 0)
return err;
return 0;
}
static int skl_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
struct skl_dev *skl;
struct hdac_bus *bus = NULL;
int err;
switch (skl_pci_binding) {
case SND_SKL_PCI_BIND_AUTO:
err = snd_intel_dsp_driver_probe(pci);
if (err != SND_INTEL_DSP_DRIVER_ANY &&
err != SND_INTEL_DSP_DRIVER_SST)
return -ENODEV;
break;
case SND_SKL_PCI_BIND_LEGACY:
dev_info(&pci->dev, "Module parameter forced binding with HDAudio legacy, aborting probe\n");
return -ENODEV;
case SND_SKL_PCI_BIND_ASOC:
dev_info(&pci->dev, "Module parameter forced binding with SKL driver, bypassed detection logic\n");
break;
default:
dev_err(&pci->dev, "invalid value for skl_pci_binding module parameter, ignored\n");
break;
}
/* we use ext core ops, so provide NULL for ops here */
err = skl_create(pci, &skl);
if (err < 0)
return err;
bus = skl_to_bus(skl);
err = skl_first_init(bus);
if (err < 0) {
dev_err(bus->dev, "skl_first_init failed with err: %d\n", err);
goto out_free;
}
skl->pci_id = pci->device;
device_disable_async_suspend(bus->dev);
skl->nhlt = intel_nhlt_init(bus->dev);
if (skl->nhlt == NULL) {
#if !IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
dev_err(bus->dev, "no nhlt info found\n");
err = -ENODEV;
goto out_free;
#else
dev_warn(bus->dev, "no nhlt info found, continuing to try to enable HDAudio codec\n");
#endif
} else {
err = skl_nhlt_create_sysfs(skl);
if (err < 0) {
dev_err(bus->dev, "skl_nhlt_create_sysfs failed with err: %d\n", err);
goto out_nhlt_free;
}
skl_nhlt_update_topology_bin(skl);
/* create device for dsp clk */
err = skl_clock_device_register(skl);
if (err < 0) {
dev_err(bus->dev, "skl_clock_device_register failed with err: %d\n", err);
goto out_clk_free;
}
}
pci_set_drvdata(skl->pci, bus);
err = skl_find_machine(skl, (void *)pci_id->driver_data);
if (err < 0) {
dev_err(bus->dev, "skl_find_machine failed with err: %d\n", err);
goto out_nhlt_free;
}
err = skl_init_dsp(skl);
if (err < 0) {
dev_dbg(bus->dev, "error failed to register dsp\n");
goto out_nhlt_free;
}
skl->enable_miscbdcge = skl_enable_miscbdcge;
skl->clock_power_gating = skl_clock_power_gating;
if (bus->mlcap)
snd_hdac_ext_bus_get_ml_capabilities(bus);
/* create device for soc dmic */
err = skl_dmic_device_register(skl);
if (err < 0) {
dev_err(bus->dev, "skl_dmic_device_register failed with err: %d\n", err);
goto out_dsp_free;
}
schedule_work(&skl->probe_work);
return 0;
out_dsp_free:
skl_free_dsp(skl);
out_clk_free:
skl_clock_device_unregister(skl);
out_nhlt_free:
if (skl->nhlt)
intel_nhlt_free(skl->nhlt);
out_free:
skl_free(bus);
return err;
}
static void skl_shutdown(struct pci_dev *pci)
{
struct hdac_bus *bus = pci_get_drvdata(pci);
struct hdac_stream *s;
struct hdac_ext_stream *stream;
struct skl_dev *skl;
if (!bus)
return;
skl = bus_to_skl(bus);
if (!skl->init_done)
return;
snd_hdac_stop_streams(bus);
snd_hdac_ext_bus_link_power_down_all(bus);
skl_dsp_sleep(skl->dsp);
list_for_each_entry(s, &bus->stream_list, list) {
stream = stream_to_hdac_ext_stream(s);
snd_hdac_ext_stream_decouple(bus, stream, false);
}
snd_hdac_bus_stop_chip(bus);
}
static void skl_remove(struct pci_dev *pci)
{
struct hdac_bus *bus = pci_get_drvdata(pci);
struct skl_dev *skl = bus_to_skl(bus);
cancel_work_sync(&skl->probe_work);
pm_runtime_get_noresume(&pci->dev);
/* codec removal, invoke bus_device_remove */
snd_hdac_ext_bus_device_remove(bus);
skl_platform_unregister(&pci->dev);
skl_free_dsp(skl);
skl_machine_device_unregister(skl);
skl_dmic_device_unregister(skl);
skl_clock_device_unregister(skl);
skl_nhlt_remove_sysfs(skl);
if (skl->nhlt)
intel_nhlt_free(skl->nhlt);
skl_free(bus);
}
/* PCI IDs */
static const struct pci_device_id skl_ids[] = {
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKL)
{ PCI_DEVICE_DATA(INTEL, HDA_SKL_LP, &snd_soc_acpi_intel_skl_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_APL)
{ PCI_DEVICE_DATA(INTEL, HDA_APL, &snd_soc_acpi_intel_bxt_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_KBL)
{ PCI_DEVICE_DATA(INTEL, HDA_KBL_LP, &snd_soc_acpi_intel_kbl_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_GLK)
{ PCI_DEVICE_DATA(INTEL, HDA_GML, &snd_soc_acpi_intel_glk_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CNL)
{ PCI_DEVICE_DATA(INTEL, HDA_CNL_LP, &snd_soc_acpi_intel_cnl_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CFL)
{ PCI_DEVICE_DATA(INTEL, HDA_CNL_H, &snd_soc_acpi_intel_cnl_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_LP)
{ PCI_DEVICE_DATA(INTEL, HDA_CML_LP, &snd_soc_acpi_intel_cnl_machines) },
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_H)
{ PCI_DEVICE_DATA(INTEL, HDA_CML_H, &snd_soc_acpi_intel_cnl_machines) },
#endif
{ 0, }
};
MODULE_DEVICE_TABLE(pci, skl_ids);
/* pci_driver definition */
static struct pci_driver skl_driver = {
.name = KBUILD_MODNAME,
.id_table = skl_ids,
.probe = skl_probe,
.remove = skl_remove,
.shutdown = skl_shutdown,
.driver = {
.pm = &skl_pm,
},
};
module_pci_driver(skl_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel Skylake ASoC HDA driver");
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