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ALSA: hda/intel: Refactoring PM code
Make unified suspend / resume helpers and call them from both the runtime- and the system-PM callbacks for simplifying code. There are slight changes of call orders, but there shouldn't be any functional difference after refactoring. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
fa9c98e4b9
commit
3baffc4a84
@ -930,66 +930,42 @@ static int param_set_xint(const char *val, const struct kernel_param *kp)
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mutex_unlock(&card_list_lock);
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return 0;
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}
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#else
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#define azx_add_card_list(chip) /* NOP */
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#define azx_del_card_list(chip) /* NOP */
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#endif /* CONFIG_PM */
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#ifdef CONFIG_PM_SLEEP
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/*
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* power management
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*/
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static int azx_suspend(struct device *dev)
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static bool azx_is_pm_ready(struct snd_card *card)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct azx *chip;
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struct hda_intel *hda;
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struct hdac_bus *bus;
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if (!card)
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return 0;
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return false;
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chip = card->private_data;
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hda = container_of(chip, struct hda_intel, chip);
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if (chip->disabled || hda->init_failed || !chip->running)
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return 0;
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bus = azx_bus(chip);
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
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azx_clear_irq_pending(chip);
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azx_stop_chip(chip);
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azx_enter_link_reset(chip);
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if (bus->irq >= 0) {
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free_irq(bus->irq, chip);
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bus->irq = -1;
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}
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if (chip->msi)
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pci_disable_msi(chip->pci);
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if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
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&& hda->need_i915_power)
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snd_hdac_display_power(bus, false);
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trace_azx_suspend(chip);
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return 0;
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return false;
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return true;
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}
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static int azx_resume(struct device *dev)
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static void __azx_runtime_suspend(struct azx *chip)
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{
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struct pci_dev *pci = to_pci_dev(dev);
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struct snd_card *card = dev_get_drvdata(dev);
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struct azx *chip;
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struct hda_intel *hda;
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struct hdac_bus *bus;
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struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
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if (!card)
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return 0;
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azx_stop_chip(chip);
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azx_enter_link_reset(chip);
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azx_clear_irq_pending(chip);
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if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL) &&
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hda->need_i915_power)
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snd_hdac_display_power(azx_bus(chip), false);
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}
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chip = card->private_data;
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hda = container_of(chip, struct hda_intel, chip);
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bus = azx_bus(chip);
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if (chip->disabled || hda->init_failed || !chip->running)
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return 0;
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static void __azx_runtime_resume(struct azx *chip)
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{
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struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
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struct hdac_bus *bus = azx_bus(chip);
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struct hda_codec *codec;
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int status;
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if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
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snd_hdac_display_power(bus, true);
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@ -997,20 +973,66 @@ static int azx_resume(struct device *dev)
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snd_hdac_i915_set_bclk(bus);
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}
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if (chip->msi)
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if (pci_enable_msi(pci) < 0)
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chip->msi = 0;
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if (azx_acquire_irq(chip, 1) < 0)
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return -EIO;
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azx_init_pci(chip);
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/* Read STATESTS before controller reset */
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status = azx_readw(chip, STATESTS);
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azx_init_pci(chip);
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hda_intel_init_chip(chip, true);
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if (status) {
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list_for_each_codec(codec, &chip->bus)
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if (status & (1 << codec->addr))
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schedule_delayed_work(&codec->jackpoll_work,
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codec->jackpoll_interval);
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}
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/* power down again for link-controlled chips */
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if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL) &&
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!hda->need_i915_power)
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snd_hdac_display_power(bus, false);
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}
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#ifdef CONFIG_PM_SLEEP
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static int azx_suspend(struct device *dev)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct azx *chip;
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struct hdac_bus *bus;
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if (!azx_is_pm_ready(card))
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return 0;
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chip = card->private_data;
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bus = azx_bus(chip);
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
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__azx_runtime_suspend(chip);
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if (bus->irq >= 0) {
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free_irq(bus->irq, chip);
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bus->irq = -1;
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}
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if (chip->msi)
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pci_disable_msi(chip->pci);
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trace_azx_suspend(chip);
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return 0;
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}
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static int azx_resume(struct device *dev)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct azx *chip;
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if (!azx_is_pm_ready(card))
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return 0;
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chip = card->private_data;
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if (chip->msi)
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if (pci_enable_msi(chip->pci) < 0)
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chip->msi = 0;
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if (azx_acquire_irq(chip, 1) < 0)
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return -EIO;
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__azx_runtime_resume(chip);
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snd_power_change_state(card, SNDRV_CTL_POWER_D0);
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trace_azx_resume(chip);
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@ -1045,21 +1067,14 @@ static int azx_thaw_noirq(struct device *dev)
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}
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#endif /* CONFIG_PM_SLEEP */
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#ifdef CONFIG_PM
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static int azx_runtime_suspend(struct device *dev)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct azx *chip;
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struct hda_intel *hda;
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if (!card)
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if (!azx_is_pm_ready(card))
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return 0;
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chip = card->private_data;
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hda = container_of(chip, struct hda_intel, chip);
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if (chip->disabled || hda->init_failed)
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return 0;
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if (!azx_has_pm_runtime(chip))
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return 0;
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@ -1067,13 +1082,7 @@ static int azx_runtime_suspend(struct device *dev)
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azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
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STATESTS_INT_MASK);
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azx_stop_chip(chip);
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azx_enter_link_reset(chip);
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azx_clear_irq_pending(chip);
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if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
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&& hda->need_i915_power)
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snd_hdac_display_power(azx_bus(chip), false);
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__azx_runtime_suspend(chip);
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trace_azx_runtime_suspend(chip);
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return 0;
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}
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@ -1082,51 +1091,18 @@ static int azx_runtime_resume(struct device *dev)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct azx *chip;
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struct hda_intel *hda;
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struct hdac_bus *bus;
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struct hda_codec *codec;
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int status;
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if (!card)
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if (!azx_is_pm_ready(card))
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return 0;
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chip = card->private_data;
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hda = container_of(chip, struct hda_intel, chip);
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bus = azx_bus(chip);
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if (chip->disabled || hda->init_failed)
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return 0;
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if (!azx_has_pm_runtime(chip))
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return 0;
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if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
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snd_hdac_display_power(bus, true);
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if (hda->need_i915_power)
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snd_hdac_i915_set_bclk(bus);
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}
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/* Read STATESTS before controller reset */
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status = azx_readw(chip, STATESTS);
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azx_init_pci(chip);
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hda_intel_init_chip(chip, true);
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if (status) {
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list_for_each_codec(codec, &chip->bus)
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if (status & (1 << codec->addr))
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schedule_delayed_work(&codec->jackpoll_work,
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codec->jackpoll_interval);
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}
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__azx_runtime_resume(chip);
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/* disable controller Wake Up event*/
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azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
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~STATESTS_INT_MASK);
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/* power down again for link-controlled chips */
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if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL) &&
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!hda->need_i915_power)
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snd_hdac_display_power(bus, false);
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trace_azx_runtime_resume(chip);
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return 0;
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}
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@ -1167,6 +1143,8 @@ static const struct dev_pm_ops azx_pm = {
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#define AZX_PM_OPS &azx_pm
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#else
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#define azx_add_card_list(chip) /* NOP */
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#define azx_del_card_list(chip) /* NOP */
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#define AZX_PM_OPS NULL
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#endif /* CONFIG_PM */
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