diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/Kconfig | 9 | ||||
| -rw-r--r-- | sound/pci/hda/Makefile | 9 | ||||
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 4 | ||||
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 3 | ||||
| -rw-r--r-- | sound/pci/hda/hda_hwdep.c | 122 | ||||
| -rw-r--r-- | sound/pci/hda/hda_local.h | 5 |
6 files changed, 147 insertions, 5 deletions
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig index c6b44102aa5..57426f6fa42 100644 --- a/sound/pci/Kconfig +++ b/sound/pci/Kconfig @@ -500,6 +500,15 @@ config SND_HDA_INTEL To compile this driver as a module, choose M here: the module will be called snd-hda-intel. +config SND_HDA_HWDEP + bool "Build hwdep interface for HD-audio driver" + depends on SND_HDA_INTEL + select SND_HWDEP + help + Say Y here to build a hwdep interface for HD-audio driver. + This interface can be used for out-of-bound communication + with codesc for debugging purposes. + config SND_HDSP tristate "RME Hammerfall DSP Audio" depends on SND diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile index b2484bbdcc1..f85c34551ac 100644 --- a/sound/pci/hda/Makefile +++ b/sound/pci/hda/Makefile @@ -1,8 +1,8 @@ -snd-hda-intel-objs := hda_intel.o +snd-hda-intel-y := hda_intel.o # since snd-hda-intel is the only driver using hda-codec, # merge it into a single module although it was originally # designed to be individual modules -snd-hda-intel-objs += hda_codec.o \ +snd-hda-intel-y += hda_codec.o \ hda_generic.o \ patch_realtek.o \ patch_cmedia.o \ @@ -12,8 +12,7 @@ snd-hda-intel-objs += hda_codec.o \ patch_atihdmi.o \ patch_conexant.o \ patch_via.o -ifdef CONFIG_PROC_FS -snd-hda-intel-objs += hda_proc.o -endif +snd-hda-intel-$(CONFIG_PROC_FS) += hda_proc.o +snd-hda-intel-$(CONFIG_SND_HDA_HWDEP) += hda_hwdep.o obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index a05db2f214b..e7843ffeeb2 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -31,6 +31,7 @@ #include <sound/tlv.h> #include <sound/initval.h> #include "hda_local.h" +#include <sound/hda_hwdep.h> /* @@ -594,6 +595,9 @@ int __devinit snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr, init_unsol_queue(bus); snd_hda_codec_proc_new(codec); +#ifdef CONFIG_SND_HDA_HWDEP + snd_hda_create_hwdep(codec); +#endif sprintf(component, "HDA:%08x", codec->vendor_id); snd_component_add(codec->bus->card, component); diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 6809386109c..1370e346bf3 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -24,6 +24,7 @@ #include <sound/info.h> #include <sound/control.h> #include <sound/pcm.h> +#include <sound/hwdep.h> /* * nodes @@ -566,6 +567,8 @@ struct hda_codec { unsigned int spdif_status; /* IEC958 status bits */ unsigned short spdif_ctls; /* SPDIF control bits */ unsigned int spdif_in_enable; /* SPDIF input enable? */ + + struct snd_hwdep *hwdep; /* assigned hwdep device */ }; /* direction */ diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c new file mode 100644 index 00000000000..64be7b53348 --- /dev/null +++ b/sound/pci/hda/hda_hwdep.c @@ -0,0 +1,122 @@ +/* + * HWDEP Interface for HD-audio codec + * + * Copyright (c) 2007 Takashi Iwai <tiwai@suse.de> + * + * This driver 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 driver 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 <sound/driver.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/pci.h> +#include <linux/compat.h> +#include <linux/mutex.h> +#include <sound/core.h> +#include "hda_codec.h" +#include "hda_local.h" +#include <sound/hda_hwdep.h> + +/* + * write/read an out-of-bound verb + */ +static int verb_write_ioctl(struct hda_codec *codec, + struct hda_verb_ioctl __user *arg) +{ + u32 verb, res; + + if (get_user(verb, &arg->verb)) + return -EFAULT; + res = snd_hda_codec_read(codec, verb >> 24, 0, + (verb >> 8) & 0xffff, verb & 0xff); + if (put_user(res, &arg->res)) + return -EFAULT; + return 0; +} + +static int get_wcap_ioctl(struct hda_codec *codec, + struct hda_verb_ioctl __user *arg) +{ + u32 verb, res; + + if (get_user(verb, &arg->verb)) + return -EFAULT; + res = get_wcaps(codec, verb >> 24); + if (put_user(res, &arg->res)) + return -EFAULT; + return 0; +} + + +/* + */ +static int hda_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct hda_codec *codec = hw->private_data; + void __user *argp = (void __user *)arg; + + switch (cmd) { + case HDA_IOCTL_PVERSION: + return put_user(HDA_HWDEP_VERSION, (int __user *)argp); + case HDA_IOCTL_VERB_WRITE: + return verb_write_ioctl(codec, argp); + case HDA_IOCTL_GET_WCAP: + return get_wcap_ioctl(codec, argp); + } + return -ENOIOCTLCMD; +} + +#ifdef CONFIG_COMPAT +static int hda_hwdep_ioctl_compat(struct snd_hwdep *hw, struct file *file, + unsigned int cmd, unsigned long arg) +{ + return hda_hwdep_ioctl(hw, file, cmd, compat_ptr(arg)); +} +#endif + +static int hda_hwdep_open(struct snd_hwdep *hw, struct file *file) +{ +#ifndef CONFIG_SND_DEBUG_DETECT + if (!capable(CAP_SYS_RAWIO)) + return -EACCES; +#endif + return 0; +} + +int __devinit snd_hda_create_hwdep(struct hda_codec *codec) +{ + char hwname[16]; + struct snd_hwdep *hwdep; + int err; + + sprintf(hwname, "HDA Codec %d", codec->addr); + err = snd_hwdep_new(codec->bus->card, hwname, codec->addr, &hwdep); + if (err < 0) + return err; + codec->hwdep = hwdep; + sprintf(hwdep->name, "HDA Codec %d", codec->addr); + hwdep->iface = SNDRV_HWDEP_IFACE_HDA; + hwdep->private_data = codec; + hwdep->exclusive = 1; + + hwdep->ops.open = hda_hwdep_open; + hwdep->ops.ioctl = hda_hwdep_ioctl; +#ifdef CONFIG_COMPAT + hwdep->ops.ioctl_compat = hda_hwdep_ioctl_compat; +#endif + + return 0; +} diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index c8d34a5b081..12428a67eb2 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -313,4 +313,9 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid) int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir, unsigned int caps); +/* + * hwdep interface + */ +int snd_hda_create_hwdep(struct hda_codec *codec); + #endif /* __SOUND_HDA_LOCAL_H */ |