Define the common hd-audio driver and device types to bind over snd_hda_bus_type publicly. This allows to implement other type of device and driver code over hd-audio bus.
Now both struct hda_codec and struct hda_codec_driver inherit these new struct hdac_device and struct hdac_driver, respectively.
The bus registration is done in subsys_initcall() to assure it before any other driver registrations.
Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/hdaudio.h | 42 ++++++++++++++++++++++++++++++++++++++++++ sound/Kconfig | 2 ++ sound/Makefile | 2 +- sound/hda/Kconfig | 2 ++ sound/hda/Makefile | 3 +++ sound/hda/hda_bus_type.c | 42 ++++++++++++++++++++++++++++++++++++++++++ sound/pci/hda/Kconfig | 1 + sound/pci/hda/hda_bind.c | 47 ++++++++++++++--------------------------------- sound/pci/hda/hda_codec.c | 1 + sound/pci/hda/hda_codec.h | 11 +++++------ 10 files changed, 113 insertions(+), 40 deletions(-) create mode 100644 include/sound/hdaudio.h create mode 100644 sound/hda/Kconfig create mode 100644 sound/hda/Makefile create mode 100644 sound/hda/hda_bus_type.c
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h new file mode 100644 index 000000000000..2381509bee9f --- /dev/null +++ b/include/sound/hdaudio.h @@ -0,0 +1,42 @@ +/* + * HD-audio core stuff + */ + +#ifndef __SOUND_HDAUDIO_H +#define __SOUND_HDAUDIO_H + +#include <linux/device.h> + +/* + * exported bus type + */ +extern struct bus_type snd_hda_bus_type; + +/* + * HD-audio codec base device + */ +struct hdac_device { + struct device dev; + int type; +}; + +/* device/driver type used for matching */ +enum { + HDA_DEV_CORE, + HDA_DEV_LEGACY, +}; + +#define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev) + +/* + * HD-audio codec base driver + */ +struct hdac_driver { + struct device_driver driver; + int type; + int (*match)(struct hdac_device *dev, struct hdac_driver *drv); +}; + +#define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver) + +#endif /* __SOUND_HDAUDIO_H */ diff --git a/sound/Kconfig b/sound/Kconfig index c710ce2c5c37..5a240e050ae6 100644 --- a/sound/Kconfig +++ b/sound/Kconfig @@ -76,6 +76,8 @@ source "sound/isa/Kconfig"
source "sound/pci/Kconfig"
+source "sound/hda/Kconfig" + source "sound/ppc/Kconfig"
source "sound/aoa/Kconfig" diff --git a/sound/Makefile b/sound/Makefile index ce9132b1c395..77320709fd26 100644 --- a/sound/Makefile +++ b/sound/Makefile @@ -6,7 +6,7 @@ obj-$(CONFIG_SOUND_PRIME) += sound_firmware.o obj-$(CONFIG_SOUND_PRIME) += oss/ obj-$(CONFIG_DMASOUND) += oss/ obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ sh/ synth/ usb/ \ - firewire/ sparc/ spi/ parisc/ pcmcia/ mips/ soc/ atmel/ + firewire/ sparc/ spi/ parisc/ pcmcia/ mips/ soc/ atmel/ hda/ obj-$(CONFIG_SND_AOA) += aoa/
# This one must be compilable even if sound is configured out diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig new file mode 100644 index 000000000000..4f428ccf64ad --- /dev/null +++ b/sound/hda/Kconfig @@ -0,0 +1,2 @@ +config SND_HDA_CORE + tristate diff --git a/sound/hda/Makefile b/sound/hda/Makefile new file mode 100644 index 000000000000..59c8d1feb5aa --- /dev/null +++ b/sound/hda/Makefile @@ -0,0 +1,3 @@ +snd-hda-core-objs := hda_bus_type.o + +obj-$(CONFIG_SND_HDA_CORE) += snd-hda-core.o diff --git a/sound/hda/hda_bus_type.c b/sound/hda/hda_bus_type.c new file mode 100644 index 000000000000..519914a12e8a --- /dev/null +++ b/sound/hda/hda_bus_type.c @@ -0,0 +1,42 @@ +/* + * HD-audio bus + */ +#include <linux/init.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/export.h> +#include <sound/hdaudio.h> + +MODULE_DESCRIPTION("HD-audio bus"); +MODULE_LICENSE("GPL"); + +static int hda_bus_match(struct device *dev, struct device_driver *drv) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + struct hdac_driver *hdrv = drv_to_hdac_driver(drv); + + if (hdev->type != hdrv->type) + return 0; + if (hdrv->match) + return hdrv->match(hdev, hdrv); + return 1; +} + +struct bus_type snd_hda_bus_type = { + .name = "hdaudio", + .match = hda_bus_match, +}; +EXPORT_SYMBOL_GPL(snd_hda_bus_type); + +static int __init hda_bus_init(void) +{ + return bus_register(&snd_hda_bus_type); +} + +static void __exit hda_bus_exit(void) +{ + bus_unregister(&snd_hda_bus_type); +} + +subsys_initcall(hda_bus_init); +module_exit(hda_bus_exit); diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig index 7f0f2c5a4e97..a5ed1c181784 100644 --- a/sound/pci/hda/Kconfig +++ b/sound/pci/hda/Kconfig @@ -5,6 +5,7 @@ config SND_HDA select SND_PCM select SND_VMASTER select SND_KCTL_JACK + select SND_HDA_CORE
config SND_HDA_INTEL tristate "HD Audio PCI" diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c index 1f40ce3c1696..e3bd2807b644 100644 --- a/sound/pci/hda/hda_bind.c +++ b/sound/pci/hda/hda_bind.c @@ -47,11 +47,11 @@ static struct hda_vendor_id hda_vendor_ids[] = { /* * find a matching codec preset */ -static int hda_bus_match(struct device *dev, struct device_driver *drv) +static int hda_codec_match(struct hdac_device *dev, struct hdac_driver *drv) { - struct hda_codec *codec = container_of(dev, struct hda_codec, dev); + struct hda_codec *codec = container_of(dev, struct hda_codec, core); struct hda_codec_driver *driver = - container_of(drv, struct hda_codec_driver, driver); + container_of(drv, struct hda_codec_driver, core); const struct hda_codec_preset *preset; /* check probe_id instead of vendor_id if set */ u32 id = codec->probe_id ? codec->probe_id : codec->vendor_id; @@ -154,20 +154,22 @@ static void hda_codec_driver_shutdown(struct device *dev) int __hda_codec_driver_register(struct hda_codec_driver *drv, const char *name, struct module *owner) { - drv->driver.name = name; - drv->driver.owner = owner; - drv->driver.bus = &snd_hda_bus_type; - drv->driver.probe = hda_codec_driver_probe; - drv->driver.remove = hda_codec_driver_remove; - drv->driver.shutdown = hda_codec_driver_shutdown; - drv->driver.pm = &hda_codec_driver_pm; - return driver_register(&drv->driver); + drv->core.driver.name = name; + drv->core.driver.owner = owner; + drv->core.driver.bus = &snd_hda_bus_type; + drv->core.driver.probe = hda_codec_driver_probe; + drv->core.driver.remove = hda_codec_driver_remove; + drv->core.driver.shutdown = hda_codec_driver_shutdown; + drv->core.driver.pm = &hda_codec_driver_pm; + drv->core.type = HDA_DEV_LEGACY; + drv->core.match = hda_codec_match; + return driver_register(&drv->core.driver); } EXPORT_SYMBOL_GPL(__hda_codec_driver_register);
void hda_codec_driver_unregister(struct hda_codec_driver *drv) { - driver_unregister(&drv->driver); + driver_unregister(&drv->core.driver); } EXPORT_SYMBOL_GPL(hda_codec_driver_unregister);
@@ -319,24 +321,3 @@ int snd_hda_codec_configure(struct hda_codec *codec) return err; } EXPORT_SYMBOL_GPL(snd_hda_codec_configure); - -/* - * bus registration - */ -struct bus_type snd_hda_bus_type = { - .name = "hdaudio", - .match = hda_bus_match, -}; - -static int __init hda_codec_init(void) -{ - return bus_register(&snd_hda_bus_type); -} - -static void __exit hda_codec_exit(void) -{ - bus_unregister(&snd_hda_bus_type); -} - -module_init(hda_codec_init); -module_exit(hda_codec_exit); diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 7e38d6f7314b..e14f9f562874 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1294,6 +1294,7 @@ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card, dev_set_name(dev, "hdaudioC%dD%d", card->number, codec_addr); dev_set_drvdata(dev, codec); /* for sysfs */ device_enable_async_suspend(dev); + codec->core.type = HDA_DEV_LEGACY;
codec->bus = bus; codec->card = card; diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 148e84ce61cf..9874d5b6a8a7 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -26,6 +26,7 @@ #include <sound/control.h> #include <sound/pcm.h> #include <sound/hwdep.h> +#include <sound/hdaudio.h> #include <sound/hda_verbs.h>
/* @@ -172,7 +173,7 @@ struct hda_codec_preset { #define HDA_CODEC_ID_GENERIC 0x00000201
struct hda_codec_driver { - struct device_driver driver; + struct hdac_driver core; const struct hda_codec_preset *preset; };
@@ -276,7 +277,7 @@ struct hda_pcm {
/* codec information */ struct hda_codec { - struct device dev; + struct hdac_device core; struct hda_bus *bus; struct snd_card *card; unsigned int addr; /* codec addr*/ @@ -409,10 +410,8 @@ struct hda_codec { struct snd_array verbs; };
-#define dev_to_hda_codec(_dev) container_of(_dev, struct hda_codec, dev) -#define hda_codec_dev(_dev) (&(_dev)->dev) - -extern struct bus_type snd_hda_bus_type; +#define dev_to_hda_codec(_dev) container_of(_dev, struct hda_codec, core.dev) +#define hda_codec_dev(_dev) (&(_dev)->core.dev)
/* direction */ enum {