mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
ALSA: hda - Support VGA-switcheroo
Add the support for VGA-switcheroo in the HD-audio controller side. When the graphics controller is disabled, the HD-audio driver also delays the initialization until it's activated by VGA-switcheroo. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43155 Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
d3d020bd11
commit
a82d51ed24
1 changed files with 227 additions and 45 deletions
|
|
@ -54,6 +54,7 @@
|
|||
#include <sound/core.h>
|
||||
#include <sound/initval.h>
|
||||
#include <linux/vgaarb.h>
|
||||
#include <linux/vga_switcheroo.h>
|
||||
#include "hda_codec.h"
|
||||
|
||||
|
||||
|
|
@ -176,6 +177,13 @@ MODULE_DESCRIPTION("Intel HDA driver");
|
|||
#define SFX "hda-intel: "
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
|
||||
#ifdef CONFIG_SND_HDA_CODEC_HDMI
|
||||
#define SUPPORT_VGA_SWITCHEROO
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* registers
|
||||
*/
|
||||
|
|
@ -473,6 +481,12 @@ struct azx {
|
|||
unsigned int probing :1; /* codec probing phase */
|
||||
unsigned int snoop:1;
|
||||
unsigned int align_buffer_size:1;
|
||||
unsigned int region_requested:1;
|
||||
|
||||
/* VGA-switcheroo setup */
|
||||
unsigned int use_vga_switcheroo:1;
|
||||
unsigned int init_failed:1; /* delayed init failed */
|
||||
unsigned int disabled:1; /* disabled by VGA-switcher */
|
||||
|
||||
/* for debugging */
|
||||
unsigned int last_cmd[AZX_MAX_CODECS];
|
||||
|
|
@ -539,7 +553,20 @@ enum {
|
|||
#define AZX_DCAPS_PRESET_CTHDA \
|
||||
(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_4K_BDLE_BOUNDARY)
|
||||
|
||||
static char *driver_short_names[] __devinitdata = {
|
||||
/*
|
||||
* VGA-switcher support
|
||||
*/
|
||||
#ifdef SUPPORT_VGA_SWITCHEROO
|
||||
#define DELAYED_INIT_MARK
|
||||
#define DELAYED_INITDATA_MARK
|
||||
#define use_vga_switcheroo(chip) ((chip)->use_vga_switcheroo)
|
||||
#else
|
||||
#define DELAYED_INIT_MARK __devinit
|
||||
#define DELAYED_INITDATA_MARK __devinitdata
|
||||
#define use_vga_switcheroo(chip) 0
|
||||
#endif
|
||||
|
||||
static char *driver_short_names[] DELAYED_INITDATA_MARK = {
|
||||
[AZX_DRIVER_ICH] = "HDA Intel",
|
||||
[AZX_DRIVER_PCH] = "HDA Intel PCH",
|
||||
[AZX_DRIVER_SCH] = "HDA Intel MID",
|
||||
|
|
@ -958,6 +985,8 @@ static int azx_send_cmd(struct hda_bus *bus, unsigned int val)
|
|||
{
|
||||
struct azx *chip = bus->private_data;
|
||||
|
||||
if (chip->disabled)
|
||||
return 0;
|
||||
chip->last_cmd[azx_command_addr(val)] = val;
|
||||
if (chip->single_cmd)
|
||||
return azx_single_send_cmd(bus, val);
|
||||
|
|
@ -970,6 +999,8 @@ static unsigned int azx_get_response(struct hda_bus *bus,
|
|||
unsigned int addr)
|
||||
{
|
||||
struct azx *chip = bus->private_data;
|
||||
if (chip->disabled)
|
||||
return 0;
|
||||
if (chip->single_cmd)
|
||||
return azx_single_get_response(bus, addr);
|
||||
else
|
||||
|
|
@ -1235,6 +1266,9 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
|
|||
|
||||
spin_lock(&chip->reg_lock);
|
||||
|
||||
if (chip->disabled)
|
||||
return IRQ_NONE;
|
||||
|
||||
status = azx_readl(chip, INTSTS);
|
||||
if (status == 0) {
|
||||
spin_unlock(&chip->reg_lock);
|
||||
|
|
@ -1520,12 +1554,12 @@ static void azx_bus_reset(struct hda_bus *bus)
|
|||
*/
|
||||
|
||||
/* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
|
||||
static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] __devinitdata = {
|
||||
static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] DELAYED_INITDATA_MARK = {
|
||||
[AZX_DRIVER_NVIDIA] = 8,
|
||||
[AZX_DRIVER_TERA] = 1,
|
||||
};
|
||||
|
||||
static int __devinit azx_codec_create(struct azx *chip, const char *model)
|
||||
static int DELAYED_INIT_MARK azx_codec_create(struct azx *chip, const char *model)
|
||||
{
|
||||
struct hda_bus_template bus_temp;
|
||||
int c, codecs, err;
|
||||
|
|
@ -2443,6 +2477,105 @@ static void azx_notifier_unregister(struct azx *chip)
|
|||
unregister_reboot_notifier(&chip->reboot_notifier);
|
||||
}
|
||||
|
||||
static int DELAYED_INIT_MARK azx_first_init(struct azx *chip);
|
||||
static int DELAYED_INIT_MARK azx_probe_continue(struct azx *chip);
|
||||
|
||||
static struct pci_dev __devinit *get_bound_vga(struct pci_dev *pci);
|
||||
|
||||
#ifdef SUPPORT_VGA_SWITCHEROO
|
||||
static void azx_vs_set_state(struct pci_dev *pci,
|
||||
enum vga_switcheroo_state state)
|
||||
{
|
||||
struct snd_card *card = pci_get_drvdata(pci);
|
||||
struct azx *chip = card->private_data;
|
||||
bool disabled;
|
||||
|
||||
if (chip->init_failed)
|
||||
return;
|
||||
|
||||
disabled = (state == VGA_SWITCHEROO_OFF);
|
||||
if (chip->disabled == disabled)
|
||||
return;
|
||||
|
||||
if (!chip->bus) {
|
||||
chip->disabled = disabled;
|
||||
if (!disabled) {
|
||||
snd_printk(KERN_INFO SFX
|
||||
"%s: Start delayed initialization\n",
|
||||
pci_name(chip->pci));
|
||||
if (azx_first_init(chip) < 0 ||
|
||||
azx_probe_continue(chip) < 0) {
|
||||
snd_printk(KERN_ERR SFX
|
||||
"%s: initialization error\n",
|
||||
pci_name(chip->pci));
|
||||
chip->init_failed = true;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
snd_printk(KERN_INFO SFX
|
||||
"%s %s via VGA-switcheroo\n",
|
||||
disabled ? "Disabling" : "Enabling",
|
||||
pci_name(chip->pci));
|
||||
if (disabled) {
|
||||
azx_suspend(pci, PMSG_FREEZE);
|
||||
chip->disabled = true;
|
||||
snd_hda_lock_devices(chip->bus);
|
||||
} else {
|
||||
snd_hda_unlock_devices(chip->bus);
|
||||
chip->disabled = false;
|
||||
azx_resume(pci);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static bool azx_vs_can_switch(struct pci_dev *pci)
|
||||
{
|
||||
struct snd_card *card = pci_get_drvdata(pci);
|
||||
struct azx *chip = card->private_data;
|
||||
|
||||
if (chip->init_failed)
|
||||
return false;
|
||||
if (chip->disabled || !chip->bus)
|
||||
return true;
|
||||
if (snd_hda_lock_devices(chip->bus))
|
||||
return false;
|
||||
snd_hda_unlock_devices(chip->bus);
|
||||
return true;
|
||||
}
|
||||
|
||||
static void __devinit init_vga_switcheroo(struct azx *chip)
|
||||
{
|
||||
struct pci_dev *p = get_bound_vga(chip->pci);
|
||||
if (p) {
|
||||
snd_printk(KERN_INFO SFX
|
||||
"%s: Handle VGA-switcheroo audio client\n",
|
||||
pci_name(chip->pci));
|
||||
chip->use_vga_switcheroo = 1;
|
||||
pci_dev_put(p);
|
||||
}
|
||||
}
|
||||
|
||||
static const struct vga_switcheroo_client_ops azx_vs_ops = {
|
||||
.set_gpu_state = azx_vs_set_state,
|
||||
.can_switch = azx_vs_can_switch,
|
||||
};
|
||||
|
||||
static int __devinit register_vga_switcheroo(struct azx *chip)
|
||||
{
|
||||
if (!chip->use_vga_switcheroo)
|
||||
return 0;
|
||||
/* FIXME: currently only handling DIS controller
|
||||
* is there any machine with two switchable HDMI audio controllers?
|
||||
*/
|
||||
return vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops,
|
||||
VGA_SWITCHEROO_DIS,
|
||||
chip->bus != NULL);
|
||||
}
|
||||
#else
|
||||
#define init_vga_switcheroo(chip) /* NOP */
|
||||
#define register_vga_switcheroo(chip) 0
|
||||
#endif /* SUPPORT_VGA_SWITCHER */
|
||||
|
||||
/*
|
||||
* destructor
|
||||
*/
|
||||
|
|
@ -2452,6 +2585,12 @@ static int azx_free(struct azx *chip)
|
|||
|
||||
azx_notifier_unregister(chip);
|
||||
|
||||
if (use_vga_switcheroo(chip)) {
|
||||
if (chip->disabled && chip->bus)
|
||||
snd_hda_unlock_devices(chip->bus);
|
||||
vga_switcheroo_unregister_client(chip->pci);
|
||||
}
|
||||
|
||||
if (chip->initialized) {
|
||||
azx_clear_irq_pending(chip);
|
||||
for (i = 0; i < chip->num_streams; i++)
|
||||
|
|
@ -2481,7 +2620,8 @@ static int azx_free(struct azx *chip)
|
|||
mark_pages_wc(chip, &chip->posbuf, false);
|
||||
snd_dma_free_pages(&chip->posbuf);
|
||||
}
|
||||
pci_release_regions(chip->pci);
|
||||
if (chip->region_requested)
|
||||
pci_release_regions(chip->pci);
|
||||
pci_disable_device(chip->pci);
|
||||
kfree(chip->azx_dev);
|
||||
kfree(chip);
|
||||
|
|
@ -2708,12 +2848,11 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
int dev, unsigned int driver_caps,
|
||||
struct azx **rchip)
|
||||
{
|
||||
struct azx *chip;
|
||||
int i, err;
|
||||
unsigned short gcap;
|
||||
static struct snd_device_ops ops = {
|
||||
.dev_free = azx_dev_free,
|
||||
};
|
||||
struct azx *chip;
|
||||
int err;
|
||||
|
||||
*rchip = NULL;
|
||||
|
||||
|
|
@ -2739,6 +2878,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
chip->dev_index = dev;
|
||||
INIT_WORK(&chip->irq_pending_work, azx_irq_pending_work);
|
||||
INIT_LIST_HEAD(&chip->pcm_list);
|
||||
init_vga_switcheroo(chip);
|
||||
|
||||
chip->position_fix[0] = chip->position_fix[1] =
|
||||
check_position_fix(chip, position_fix[dev]);
|
||||
|
|
@ -2766,6 +2906,53 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
}
|
||||
}
|
||||
|
||||
if (check_hdmi_disabled(pci)) {
|
||||
snd_printk(KERN_INFO SFX "VGA controller for %s is disabled\n",
|
||||
pci_name(pci));
|
||||
if (use_vga_switcheroo(chip)) {
|
||||
snd_printk(KERN_INFO SFX "Delaying initialization\n");
|
||||
chip->disabled = true;
|
||||
goto ok;
|
||||
}
|
||||
kfree(chip);
|
||||
pci_disable_device(pci);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
err = azx_first_init(chip);
|
||||
if (err < 0) {
|
||||
azx_free(chip);
|
||||
return err;
|
||||
}
|
||||
|
||||
ok:
|
||||
err = register_vga_switcheroo(chip);
|
||||
if (err < 0) {
|
||||
snd_printk(KERN_ERR SFX
|
||||
"Error registering VGA-switcheroo client\n");
|
||||
azx_free(chip);
|
||||
return err;
|
||||
}
|
||||
|
||||
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
|
||||
if (err < 0) {
|
||||
snd_printk(KERN_ERR SFX "Error creating device [card]!\n");
|
||||
azx_free(chip);
|
||||
return err;
|
||||
}
|
||||
|
||||
*rchip = chip;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int DELAYED_INIT_MARK azx_first_init(struct azx *chip)
|
||||
{
|
||||
int dev = chip->dev_index;
|
||||
struct pci_dev *pci = chip->pci;
|
||||
struct snd_card *card = chip->card;
|
||||
int i, err;
|
||||
unsigned short gcap;
|
||||
|
||||
#if BITS_PER_LONG != 64
|
||||
/* Fix up base address on ULI M5461 */
|
||||
if (chip->driver_type == AZX_DRIVER_ULI) {
|
||||
|
|
@ -2777,28 +2964,23 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
#endif
|
||||
|
||||
err = pci_request_regions(pci, "ICH HD audio");
|
||||
if (err < 0) {
|
||||
kfree(chip);
|
||||
pci_disable_device(pci);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
chip->region_requested = 1;
|
||||
|
||||
chip->addr = pci_resource_start(pci, 0);
|
||||
chip->remap_addr = pci_ioremap_bar(pci, 0);
|
||||
if (chip->remap_addr == NULL) {
|
||||
snd_printk(KERN_ERR SFX "ioremap error\n");
|
||||
err = -ENXIO;
|
||||
goto errout;
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
if (chip->msi)
|
||||
if (pci_enable_msi(pci) < 0)
|
||||
chip->msi = 0;
|
||||
|
||||
if (azx_acquire_irq(chip, 0) < 0) {
|
||||
err = -EBUSY;
|
||||
goto errout;
|
||||
}
|
||||
if (azx_acquire_irq(chip, 0) < 0)
|
||||
return -EBUSY;
|
||||
|
||||
pci_set_master(pci);
|
||||
synchronize_irq(chip->irq);
|
||||
|
|
@ -2877,7 +3059,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
GFP_KERNEL);
|
||||
if (!chip->azx_dev) {
|
||||
snd_printk(KERN_ERR SFX "cannot malloc azx_dev\n");
|
||||
goto errout;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
for (i = 0; i < chip->num_streams; i++) {
|
||||
|
|
@ -2887,7 +3069,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
BDL_SIZE, &chip->azx_dev[i].bdl);
|
||||
if (err < 0) {
|
||||
snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
|
||||
goto errout;
|
||||
return -ENOMEM;
|
||||
}
|
||||
mark_pages_wc(chip, &chip->azx_dev[i].bdl, true);
|
||||
}
|
||||
|
|
@ -2897,13 +3079,13 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
chip->num_streams * 8, &chip->posbuf);
|
||||
if (err < 0) {
|
||||
snd_printk(KERN_ERR SFX "cannot allocate posbuf\n");
|
||||
goto errout;
|
||||
return -ENOMEM;
|
||||
}
|
||||
mark_pages_wc(chip, &chip->posbuf, true);
|
||||
/* allocate CORB/RIRB */
|
||||
err = azx_alloc_cmd_io(chip);
|
||||
if (err < 0)
|
||||
goto errout;
|
||||
return err;
|
||||
|
||||
/* initialize streams */
|
||||
azx_init_stream(chip);
|
||||
|
|
@ -2915,14 +3097,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
/* codec detection */
|
||||
if (!chip->codec_mask) {
|
||||
snd_printk(KERN_ERR SFX "no codecs found!\n");
|
||||
err = -ENODEV;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
|
||||
if (err <0) {
|
||||
snd_printk(KERN_ERR SFX "Error creating device [card]!\n");
|
||||
goto errout;
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
strcpy(card->driver, "HDA-Intel");
|
||||
|
|
@ -2932,12 +3107,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
|
|||
"%s at 0x%lx irq %i",
|
||||
card->shortname, chip->addr, chip->irq);
|
||||
|
||||
*rchip = chip;
|
||||
return 0;
|
||||
|
||||
errout:
|
||||
azx_free(chip);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void power_down_all_codecs(struct azx *chip)
|
||||
|
|
@ -2968,12 +3138,6 @@ static int __devinit azx_probe(struct pci_dev *pci,
|
|||
return -ENOENT;
|
||||
}
|
||||
|
||||
if (check_hdmi_disabled(pci)) {
|
||||
snd_printk(KERN_INFO SFX
|
||||
"Inactive VGA controller; disabled audio, too\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
|
||||
if (err < 0) {
|
||||
snd_printk(KERN_ERR SFX "Error creating card!\n");
|
||||
|
|
@ -2988,6 +3152,27 @@ static int __devinit azx_probe(struct pci_dev *pci,
|
|||
goto out_free;
|
||||
card->private_data = chip;
|
||||
|
||||
if (!chip->disabled) {
|
||||
err = azx_probe_continue(chip);
|
||||
if (err < 0)
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
pci_set_drvdata(pci, card);
|
||||
|
||||
dev++;
|
||||
return 0;
|
||||
|
||||
out_free:
|
||||
snd_card_free(card);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int DELAYED_INIT_MARK azx_probe_continue(struct azx *chip)
|
||||
{
|
||||
int dev = chip->dev_index;
|
||||
int err;
|
||||
|
||||
#ifdef CONFIG_SND_HDA_INPUT_BEEP
|
||||
chip->beep_mode = beep_mode[dev];
|
||||
#endif
|
||||
|
|
@ -3021,21 +3206,18 @@ static int __devinit azx_probe(struct pci_dev *pci,
|
|||
if (err < 0)
|
||||
goto out_free;
|
||||
|
||||
err = snd_card_register(card);
|
||||
err = snd_card_register(chip->card);
|
||||
if (err < 0)
|
||||
goto out_free;
|
||||
|
||||
pci_set_drvdata(pci, card);
|
||||
chip->running = 1;
|
||||
power_down_all_codecs(chip);
|
||||
azx_notifier_register(chip);
|
||||
|
||||
out:
|
||||
dev++;
|
||||
return 0;
|
||||
|
||||
out_free:
|
||||
snd_card_free(card);
|
||||
chip->init_failed = 1;
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue