Re: [alsa-devel] [PATCH v2] ALSA: hda - Move hda_i915.c from sound/pci/hda to sound/hda

At Tue, 19 May 2015 22:29:30 +0800, mengdong.lin@intel.com wrote:

From: Mengdong Lin mengdong.lin@intel.com

The file is moved to hda core and renamed to hdac_i915.c, so can be used by both legacy HDA driver and new Skylake audio driver.

• Add snd_hdac_ prefix to the public APIs.
• The i915 audio component is moved to core bus and dynamically allocated.
• A static pointer hdac_acomp is used to help bind/unbind callbacks to get this component, because the sound card's private_data is used by the azx chip pointer, which is a legacy structure. It could be removed if private _data changes to some core structure which can be extended to find the bus.
• snd_hdac_get_display_clk() is added to get the display core clock for HSW/BDW.
• haswell_set_bclk() is moved to hda_intel.c because it needs to write the controller registers EM4/EM5, and only legacy HD-A needs it for HSW/BDW.
• Move definition of HSW/BDW-specific registers EM4/EM5 to hda_register.h and rename them to HSW_EM4/HSW_EM5, because other HD-A controllers have different layout for the extended mode registers.

Signed-off-by: Mengdong Lin mengdong.lin@intel.com

Applied, thanks.

Takashi

diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h new file mode 100644 index 0000000..adb5ba5 --- /dev/null +++ b/include/sound/hda_i915.h @@ -0,0 +1,36 @@ +/*

• • HD-Audio helpers to sync with i915 driver
• */

+#ifndef __SOUND_HDA_I915_H +#define __SOUND_HDA_I915_H

+#ifdef CONFIG_SND_HDA_I915 +int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); +int snd_hdac_display_power(struct hdac_bus *bus, bool enable); +int snd_hdac_get_display_clk(struct hdac_bus *bus); +int snd_hdac_i915_init(struct hdac_bus *bus); +int snd_hdac_i915_exit(struct hdac_bus *bus); +#else +static int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable) +{

• return 0;

+} +static inline int snd_hdac_display_power(struct hdac_bus *bus, bool enable) +{

• return 0;

+} +static inline int snd_hdac_get_display_clk(struct hdac_bus *bus) +{

• return 0;

+} +static inline int snd_hdac_i915_init(struct hdac_bus *bus) +{

• return -ENODEV;

+} +static inline int snd_hdac_i915_exit(struct hdac_bus *bus) +{

• return 0;

+} +#endif

+#endif /* __SOUND_HDA_I915_H */ diff --git a/include/sound/hda_register.h b/include/sound/hda_register.h index 4f6d3fc..0c7536e 100644 --- a/include/sound/hda_register.h +++ b/include/sound/hda_register.h @@ -84,6 +84,10 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 }; #define AZX_REG_SD_BDLPL 0x18 #define AZX_REG_SD_BDLPU 0x1c

+/* Haswell/Broadwell display HD-A controller Extended Mode registers */ +#define AZX_REG_HSW_EM4 0x100c +#define AZX_REG_HSW_EM5 0x1010

/* PCI space */ #define AZX_PCIREG_TCSEL 0x44

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index b97c59e..64fff4d 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -11,6 +11,7 @@ #include <sound/core.h> #include <sound/memalloc.h> #include <sound/hda_verbs.h> +#include <drm/i915_component.h>

/* codec node id */ typedef u16 hda_nid_t; @@ -285,6 +286,10 @@ struct hdac_bus { /* locks */ spinlock_t reg_lock; struct mutex cmd_mutex;

• /* i915 component interface */
• struct i915_audio_component *audio_component;
• int i915_power_refcount;

};

int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig index 7a17fca..ac5ffac 100644 --- a/sound/hda/Kconfig +++ b/sound/hda/Kconfig @@ -4,3 +4,9 @@ config SND_HDA_CORE

config SND_HDA_DSP_LOADER bool

+config SND_HDA_I915

• bool
• default y
• depends on DRM_I915
• depends on SND_HDA_CORE

diff --git a/sound/hda/Makefile b/sound/hda/Makefile index 5b4bb47..55dd465 100644 --- a/sound/hda/Makefile +++ b/sound/hda/Makefile @@ -4,4 +4,7 @@ snd-hda-core-objs := hda_bus_type.o hdac_bus.o hdac_device.o hdac_sysfs.o \ snd-hda-core-objs += trace.o CFLAGS_trace.o := -I$(src)

+# for sync with i915 gfx driver +snd-hda-core-$(CONFIG_SND_HDA_I915) += hdac_i915.o

obj-$(CONFIG_SND_HDA_CORE) += snd-hda-core.o diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c new file mode 100644 index 0000000..cb78c25 --- /dev/null +++ b/sound/hda/hdac_i915.c @@ -0,0 +1,193 @@ +/*

• • hdac_i915.c - routines for sync between HD-A core and i915 display driver
• • This program is free software; you can redistribute it and/or modify it
• • under the terms of the GNU General Public License as published by the Free
• • Software Foundation; either version 2 of the License, or (at your option)
• • any later version.
• • This program is distributed in the hope that it will be useful, but
• • WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
• • or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
• • for more details.
• */

+#include <linux/init.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/component.h> +#include <drm/i915_component.h> +#include <sound/core.h> +#include <sound/hdaudio.h> +#include <sound/hda_i915.h>

+static struct i915_audio_component *hdac_acomp;

+int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable) +{

• struct i915_audio_component *acomp = bus->audio_component;
• if (!acomp->ops)

• return -ENODEV;
  

• if (!acomp->ops->codec_wake_override) {

• dev_warn(bus->dev,
  

• 	"Invalid codec wake callback\n");
  

• return 0;
  

• }
• dev_dbg(bus->dev, "%s codec wakeup\n",

• enable ? "enable" : "disable");
  

• acomp->ops->codec_wake_override(acomp->dev, enable);
• return 0;

+} +EXPORT_SYMBOL_GPL(snd_hdac_set_codec_wakeup);

+int snd_hdac_display_power(struct hdac_bus *bus, bool enable) +{

• struct i915_audio_component *acomp = bus->audio_component;
• if (!acomp->ops)

• return -ENODEV;
  

• dev_dbg(bus->dev, "display power %s\n",

• enable ? "enable" : "disable");
  

• if (enable) {

• if (!bus->i915_power_refcount++)
  

• 	acomp->ops->get_power(acomp->dev);
  

• } else {

• WARN_ON(!bus->i915_power_refcount);
  

• if (!--bus->i915_power_refcount)
  

• 	acomp->ops->put_power(acomp->dev);
  

• }
• return 0;

+} +EXPORT_SYMBOL_GPL(snd_hdac_display_power);

+int snd_hdac_get_display_clk(struct hdac_bus *bus) +{

• struct i915_audio_component *acomp = bus->audio_component;
• if (!acomp->ops)

• return -ENODEV;
  

• return acomp->ops->get_cdclk_freq(acomp->dev);

+} +EXPORT_SYMBOL_GPL(snd_hdac_get_display_clk);

+static int hdac_component_master_bind(struct device *dev) +{

• struct i915_audio_component *acomp = hdac_acomp;
• int ret;
• ret = component_bind_all(dev, acomp);
• if (ret < 0)

• return ret;
  

• if (WARN_ON(!(acomp->dev && acomp->ops && acomp->ops->get_power &&

•       acomp->ops->put_power && acomp->ops->get_cdclk_freq))) {
  

• ret = -EINVAL;
  

• goto out_unbind;
  

• }
• /*

• * Atm, we don't support dynamic unbinding initiated by the child
  

• * component, so pin its containing module until we unbind.
  

• */
  

• if (!try_module_get(acomp->ops->owner)) {

• ret = -ENODEV;
  

• goto out_unbind;
  

• }
• return 0;

+out_unbind:

• component_unbind_all(dev, acomp);
• return ret;

+}

+static void hdac_component_master_unbind(struct device *dev) +{

• struct i915_audio_component *acomp = hdac_acomp;
• module_put(acomp->ops->owner);
• component_unbind_all(dev, acomp);
• WARN_ON(acomp->ops || acomp->dev);

+}

+static const struct component_master_ops hdac_component_master_ops = {

• .bind = hdac_component_master_bind,
• .unbind = hdac_component_master_unbind,

+};

+static int hdac_component_master_match(struct device *dev, void *data) +{

• /* i915 is the only supported component */
• return !strcmp(dev->driver->name, "i915");

+}

+int snd_hdac_i915_init(struct hdac_bus *bus) +{

• struct component_match *match = NULL;
• struct device *dev = bus->dev;
• struct i915_audio_component *acomp;
• int ret;
• acomp = kzalloc(sizeof(*acomp), GFP_KERNEL);
• if (!acomp)

• return -ENOMEM;
  

• bus->audio_component = acomp;
• hdac_acomp = acomp;
• component_match_add(dev, &match, hdac_component_master_match, bus);
• ret = component_master_add_with_match(dev, &hdac_component_master_ops,

• 			      match);
  

• if (ret < 0)

• goto out_err;
  

• /*

• * Atm, we don't support deferring the component binding, so make sure
  

• * i915 is loaded and that the binding successfully completes.
  

• */
  

• request_module("i915");
• if (!acomp->ops) {

• ret = -ENODEV;
  

• goto out_master_del;
  

• }
• dev_dbg(dev, "bound to i915 component master\n");
• return 0;

+out_master_del:

• component_master_del(dev, &hdac_component_master_ops);

+out_err:

• kfree(acomp);
• bus->audio_component = NULL;
• dev_err(dev, "failed to add i915 component master (%d)\n", ret);
• return ret;

+} +EXPORT_SYMBOL_GPL(snd_hdac_i915_init);

+int snd_hdac_i915_exit(struct hdac_bus *bus) +{

• struct device *dev = bus->dev;
• struct i915_audio_component *acomp = bus->audio_component;
• WARN_ON(bus->i915_power_refcount);
• if (bus->i915_power_refcount > 0 && acomp && acomp->ops)

• acomp->ops->put_power(acomp->dev);
  

• component_master_del(dev, &hdac_component_master_ops);
• kfree(acomp);
• bus->audio_component = NULL;
• return 0;

+} +EXPORT_SYMBOL_GPL(snd_hdac_i915_exit); diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig index 117bf5c..98ced97 100644 --- a/sound/pci/hda/Kconfig +++ b/sound/pci/hda/Kconfig @@ -145,11 +145,6 @@ config SND_HDA_CODEC_HDMI comment "Set to Y if you want auto-loading the codec driver" depends on SND_HDA=y && SND_HDA_CODEC_HDMI=m

-config SND_HDA_I915

• bool
• default y
• depends on DRM_I915

config SND_HDA_CODEC_CIRRUS tristate "Build Cirrus Logic codec support" select SND_HDA_GENERIC diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile index 9c259ce..90e69b2 100644 --- a/sound/pci/hda/Makefile +++ b/sound/pci/hda/Makefile @@ -1,7 +1,5 @@ snd-hda-intel-objs := hda_intel.o snd-hda-tegra-objs := hda_tegra.o -# for haswell power well -snd-hda-intel-$(CONFIG_SND_HDA_I915) += hda_i915.o

snd-hda-codec-y := hda_bind.o hda_codec.o hda_jack.o hda_auto_parser.o hda_sysfs.o snd-hda-codec-y += hda_controller.o diff --git a/sound/pci/hda/hda_i915.c b/sound/pci/hda/hda_i915.c deleted file mode 100644 index 8521702..0000000 --- a/sound/pci/hda/hda_i915.c +++ /dev/null @@ -1,227 +0,0 @@ -/*

• • hda_i915.c - routines for Haswell HDA controller power well support
• • This program is free software; you can redistribute it and/or modify it
• • under the terms of the GNU General Public License as published by the Free
• • Software Foundation; either version 2 of the License, or (at your option)
• • any later version.
• • This program is distributed in the hope that it will be useful, but
• • WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
• • or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
• • for more details.
• • You should have received a copy of the GNU General Public License
• • along with this program; if not, write to the Free Software Foundation,
• • Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
• */

-#include <linux/init.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/component.h> -#include <drm/i915_component.h> -#include <sound/core.h> -#include "hda_controller.h" -#include "hda_intel.h"

-/* Intel HSW/BDW display HDA controller Extended Mode registers.

• • EM4 (M value) and EM5 (N Value) are used to convert CDClk (Core Display
• • Clock) to 24MHz BCLK: BCLK = CDCLK * M / N
• • The values will be lost when the display power well is disabled.
• */

-#define AZX_REG_EM4 0x100c -#define AZX_REG_EM5 0x1010

-int hda_set_codec_wakeup(struct hda_intel *hda, bool enable) -{

• struct i915_audio_component *acomp = &hda->audio_component;
• if (!acomp->ops)

• return -ENODEV;
  

• if (!acomp->ops->codec_wake_override) {

• dev_warn(&hda->chip.pci->dev,
  

• 	"Invalid codec wake callback\n");
  

• return 0;
  

• }
• dev_dbg(&hda->chip.pci->dev, "%s codec wakeup\n",

• enable ? "enable" : "disable");
  

• acomp->ops->codec_wake_override(acomp->dev, enable);
• return 0;

-}

-int hda_display_power(struct hda_intel *hda, bool enable) -{

• struct i915_audio_component *acomp = &hda->audio_component;
• if (!acomp->ops)

• return -ENODEV;
  

• dev_dbg(&hda->chip.pci->dev, "display power %s\n",

• enable ? "enable" : "disable");
  

• if (enable) {

• if (!hda->i915_power_refcount++)
  

• 	acomp->ops->get_power(acomp->dev);
  

• } else {

• WARN_ON(!hda->i915_power_refcount);
  

• if (!--hda->i915_power_refcount)
  

• 	acomp->ops->put_power(acomp->dev);
  

• }
• return 0;

-}

-void haswell_set_bclk(struct hda_intel *hda) -{

• int cdclk_freq;
• unsigned int bclk_m, bclk_n;
• struct i915_audio_component *acomp = &hda->audio_component;
• struct pci_dev *pci = hda->chip.pci;
• /* Only Haswell/Broadwell need set BCLK */
• if (pci->device != 0x0a0c && pci->device != 0x0c0c

•   && pci->device != 0x0d0c && pci->device != 0x160c)
  

• return;
  

• if (!acomp->ops)

• return;
  

• cdclk_freq = acomp->ops->get_cdclk_freq(acomp->dev);
• switch (cdclk_freq) {
• case 337500:

• bclk_m = 16;
  

• bclk_n = 225;
  

• break;
  

• case 450000:
• default: /* default CDCLK 450MHz */

• bclk_m = 4;
  

• bclk_n = 75;
  

• break;
  

• case 540000:

• bclk_m = 4;
  

• bclk_n = 90;
  

• break;
  

• case 675000:

• bclk_m = 8;
  

• bclk_n = 225;
  

• break;
  

• }
• azx_writew(&hda->chip, EM4, bclk_m);
• azx_writew(&hda->chip, EM5, bclk_n);

-}

-static int hda_component_master_bind(struct device *dev) -{

• struct snd_card *card = dev_get_drvdata(dev);
• struct azx *chip = card->private_data;
• struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
• struct i915_audio_component *acomp = &hda->audio_component;
• int ret;
• ret = component_bind_all(dev, acomp);
• if (ret < 0)

• return ret;
  

• if (WARN_ON(!(acomp->dev && acomp->ops && acomp->ops->get_power &&

•       acomp->ops->put_power && acomp->ops->get_cdclk_freq))) {
  

• ret = -EINVAL;
  

• goto out_unbind;
  

• }
• /*

• * Atm, we don't support dynamic unbinding initiated by the child
  

• * component, so pin its containing module until we unbind.
  

• */
  

• if (!try_module_get(acomp->ops->owner)) {

• ret = -ENODEV;
  

• goto out_unbind;
  

• }
• return 0;

-out_unbind:

• component_unbind_all(dev, acomp);
• return ret;

-}

-static void hda_component_master_unbind(struct device *dev) -{

• struct snd_card *card = dev_get_drvdata(dev);
• struct azx *chip = card->private_data;
• struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
• struct i915_audio_component *acomp = &hda->audio_component;
• module_put(acomp->ops->owner);
• component_unbind_all(dev, acomp);
• WARN_ON(acomp->ops || acomp->dev);

-}

-static const struct component_master_ops hda_component_master_ops = {

• .bind = hda_component_master_bind,
• .unbind = hda_component_master_unbind,

-};

-static int hda_component_master_match(struct device *dev, void *data) -{

• /* i915 is the only supported component */
• return !strcmp(dev->driver->name, "i915");

-}

-int hda_i915_init(struct hda_intel *hda) -{

• struct component_match *match = NULL;
• struct device *dev = &hda->chip.pci->dev;
• struct i915_audio_component *acomp = &hda->audio_component;
• int ret;
• component_match_add(dev, &match, hda_component_master_match, hda);
• ret = component_master_add_with_match(dev, &hda_component_master_ops,

• 			      match);
  

• if (ret < 0)

• goto out_err;
  

• /*

• * Atm, we don't support deferring the component binding, so make sure
  

• * i915 is loaded and that the binding successfully completes.
  

• */
  

• request_module("i915");
• if (!acomp->ops) {

• ret = -ENODEV;
  

• goto out_master_del;
  

• }
• dev_dbg(dev, "bound to i915 component master\n");
• return 0;

-out_master_del:

• component_master_del(dev, &hda_component_master_ops);

-out_err:

• dev_err(dev, "failed to add i915 component master (%d)\n", ret);
• return ret;

-}

-int hda_i915_exit(struct hda_intel *hda) -{

• struct device *dev = &hda->chip.pci->dev;
• struct i915_audio_component *acomp = &hda->audio_component;
• WARN_ON(hda->i915_power_refcount);
• if (hda->i915_power_refcount > 0 && acomp->ops)

• acomp->ops->put_power(acomp->dev);
  

• component_master_del(dev, &hda_component_master_ops);
• return 0;

-} diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 5c84d40..391e4f8 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -57,6 +57,8 @@ #endif #include <sound/core.h> #include <sound/initval.h> +#include <sound/hdaudio.h> +#include <sound/hda_i915.h> #include <linux/vgaarb.h> #include <linux/vga_switcheroo.h> #include <linux/firmware.h> @@ -496,13 +498,13 @@ static void azx_init_pci(struct azx *chip)

static void hda_intel_init_chip(struct azx *chip, bool full_reset) {

• struct hda_intel *hda = container_of(chip, struct hda_intel, chip);

• struct hdac_bus *bus = azx_bus(chip);

  if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)

• hda_set_codec_wakeup(hda, true);
  

• snd_hdac_set_codec_wakeup(bus, true);
  

  azx_init_chip(chip, full_reset); if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)

• hda_set_codec_wakeup(hda, false);
  

• snd_hdac_set_codec_wakeup(bus, false);
  

}

/* calculate runtime delay from LPIB */ @@ -560,9 +562,9 @@ static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev) /* Enable/disable i915 display power for the link */ static int azx_intel_link_power(struct azx *chip, bool enable) {

• struct hda_intel *hda = container_of(chip, struct hda_intel, chip);

• struct hdac_bus *bus = azx_bus(chip);

• return hda_display_power(hda, enable);

• return snd_hdac_display_power(bus, enable);

}

/* @@ -800,6 +802,50 @@ static int param_set_xint(const char *val, const struct kernel_param *kp) #define azx_del_card_list(chip) /* NOP */ #endif /* CONFIG_PM */

+/* Intel HSW/BDW display HDA controller is in GPU. Both its power and link BCLK

• • depends on GPU. Two Extended Mode registers EM4 (M value) and EM5 (N Value)
• • are used to convert CDClk (Core Display Clock) to 24MHz BCLK:
• • BCLK = CDCLK * M / N
• • The values will be lost when the display power well is disabled and need to
• • be restored to avoid abnormal playback speed.
• */

+static void haswell_set_bclk(struct hda_intel *hda) +{

• struct azx *chip = &hda->chip;
• int cdclk_freq;
• unsigned int bclk_m, bclk_n;
• if (!hda->need_i915_power)

• return;
  

• cdclk_freq = snd_hdac_get_display_clk(azx_bus(chip));
• switch (cdclk_freq) {
• case 337500:

• bclk_m = 16;
  

• bclk_n = 225;
  

• break;
  

• case 450000:
• default: /* default CDCLK 450MHz */

• bclk_m = 4;
  

• bclk_n = 75;
  

• break;
  

• case 540000:

• bclk_m = 4;
  

• bclk_n = 90;
  

• break;
  

• case 675000:

• bclk_m = 8;
  

• bclk_n = 225;
  

• break;
  

• }
• azx_writew(chip, HSW_EM4, bclk_m);
• azx_writew(chip, HSW_EM5, bclk_n);

+}

#if defined(CONFIG_PM_SLEEP) || defined(SUPPORT_VGA_SWITCHEROO) /*

• power management

@@ -833,7 +879,7 @@ static int azx_suspend(struct device *dev) pci_disable_msi(chip->pci); if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL && hda->need_i915_power)

• hda_display_power(hda, false);
  

• snd_hdac_display_power(bus, false);
  
  

  trace_azx_suspend(chip); return 0;

@@ -856,7 +902,7 @@ static int azx_resume(struct device *dev)

if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL && hda->need_i915_power) {

• hda_display_power(hda, true);
  

• snd_hdac_display_power(azx_bus(chip), true);
  

  haswell_set_bclk(hda); } if (chip->msi)

@@ -902,7 +948,7 @@ static int azx_runtime_suspend(struct device *dev) azx_clear_irq_pending(chip); if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL && hda->need_i915_power)

• hda_display_power(hda, false);
  

• snd_hdac_display_power(azx_bus(chip), false);
  
  

  trace_azx_runtime_suspend(chip); return 0;

@@ -913,6 +959,7 @@ static int azx_runtime_resume(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip; struct hda_intel *hda;

• struct hdac_bus *bus; struct hda_codec *codec; int status;

@@ -929,11 +976,12 @@ static int azx_runtime_resume(struct device *dev)

if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL && hda->need_i915_power) {

• hda_display_power(hda, true);
  

• bus =  azx_bus(chip);
  

• snd_hdac_display_power(bus, true);
  

  haswell_set_bclk(hda); /* toggle codec wakeup bit for STATESTS read */

• hda_set_codec_wakeup(hda, true);
  

• hda_set_codec_wakeup(hda, false);
  

• snd_hdac_set_codec_wakeup(bus, true);
  

• snd_hdac_set_codec_wakeup(bus, false);
  

  }

  /* Read STATESTS before controller reset */

@@ -1152,10 +1200,11 @@ static int azx_free(struct azx *chip) #ifdef CONFIG_SND_HDA_PATCH_LOADER release_firmware(chip->fw); #endif

• if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) { if (hda->need_i915_power)

• 	hda_display_power(hda, false);
  

• hda_i915_exit(hda);
  

• 	snd_hdac_display_power(bus, false);
  

• snd_hdac_i915_exit(bus);
  

  } kfree(hda);

@@ -1914,6 +1963,7 @@ static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = { static int azx_probe_continue(struct azx *chip) { struct hda_intel *hda = container_of(chip, struct hda_intel, chip);

• struct hdac_bus *bus = azx_bus(chip); struct pci_dev *pci = chip->pci; int dev = chip->dev_index; int err;

@@ -1930,11 +1980,11 @@ static int azx_probe_continue(struct azx *chip) if (pci->device != 0x0f04 && pci->device != 0x2284) hda->need_i915_power = 1;

• err = hda_i915_init(hda);
  

• err = snd_hdac_i915_init(bus);
  

  if (err < 0) goto i915_power_fail;

• err = hda_display_power(hda, true);
  

• err = snd_hdac_display_power(bus, true);
  

  if (err < 0) { dev_err(chip->card->dev, "Cannot turn on display power on i915\n");

@@ -1986,7 +2036,7 @@ static int azx_probe_continue(struct azx *chip) out_free: if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL && !hda->need_i915_power)

• hda_display_power(hda, false);
  

• snd_hdac_display_power(bus, false);
  
  

i915_power_fail: if (err < 0) diff --git a/sound/pci/hda/hda_intel.h b/sound/pci/hda/hda_intel.h index 7fd3254..354f0bb 100644 --- a/sound/pci/hda/hda_intel.h +++ b/sound/pci/hda/hda_intel.h @@ -16,7 +16,6 @@ #ifndef __SOUND_HDA_INTEL_H #define __SOUND_HDA_INTEL_H

-#include <drm/i915_component.h> #include "hda_controller.h"

struct hda_intel { @@ -44,36 +43,7 @@ struct hda_intel { /* secondary power domain for hdmi audio under vga device */ struct dev_pm_domain hdmi_pm_domain;

• /* i915 component interface */ bool need_i915_power:1; /* the hda controller needs i915 power */
• struct i915_audio_component audio_component;
• int i915_power_refcount;

};

-#ifdef CONFIG_SND_HDA_I915 -int hda_set_codec_wakeup(struct hda_intel *hda, bool enable); -int hda_display_power(struct hda_intel *hda, bool enable); -void haswell_set_bclk(struct hda_intel *hda); -int hda_i915_init(struct hda_intel *hda); -int hda_i915_exit(struct hda_intel *hda); -#else -static inline int hda_set_codec_wakeup(struct hda_intel *hda, bool enable) -{

• return 0;

-} -static inline int hda_display_power(struct hda_intel *hda, bool enable) -{

• return 0;

-} -static inline void haswell_set_bclk(struct hda_intel *hda) { return; } -static inline int hda_i915_init(struct hda_intel *hda) -{

• return 0;

-} -static inline int hda_i915_exit(struct hda_intel *hda) -{

• return 0;

-} -#endif

#endif

1.9.1