diff options
author | Takashi Iwai <tiwai@suse.de> | 2008-12-25 11:40:28 +0100 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2008-12-25 11:40:28 +0100 |
commit | a65056205cdf7efb96fb2558e4f1ec6bae2582ed (patch) | |
tree | 22a5fa35464f26183e34aa4210fa6c145f24ddf3 /sound/pci/hda/hda_hwdep.c | |
parent | 313769d9edb1bbd59d2e94f5069950eecfe6fa44 (diff) | |
parent | 7645c4bfbb36f357f03815f5729c46ce8d89f008 (diff) |
Merge branch 'topic/hda' into to-push
Diffstat (limited to 'sound/pci/hda/hda_hwdep.c')
-rw-r--r-- | sound/pci/hda/hda_hwdep.c | 234 |
1 files changed, 233 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c index 6e18a422d99..300ab407cf4 100644 --- a/sound/pci/hda/hda_hwdep.c +++ b/sound/pci/hda/hda_hwdep.c @@ -23,10 +23,12 @@ #include <linux/pci.h> #include <linux/compat.h> #include <linux/mutex.h> +#include <linux/ctype.h> #include <sound/core.h> #include "hda_codec.h" #include "hda_local.h" #include <sound/hda_hwdep.h> +#include <sound/minors.h> /* * write/read an out-of-bound verb @@ -95,7 +97,26 @@ static int hda_hwdep_open(struct snd_hwdep *hw, struct file *file) return 0; } -int __devinit snd_hda_create_hwdep(struct hda_codec *codec) +static void clear_hwdep_elements(struct hda_codec *codec) +{ + char **head; + int i; + + /* clear init verbs */ + snd_array_free(&codec->init_verbs); + /* clear hints */ + head = codec->hints.list; + for (i = 0; i < codec->hints.used; i++, head++) + kfree(*head); + snd_array_free(&codec->hints); +} + +static void hwdep_free(struct snd_hwdep *hwdep) +{ + clear_hwdep_elements(hwdep->private_data); +} + +int /*__devinit*/ snd_hda_create_hwdep(struct hda_codec *codec) { char hwname[16]; struct snd_hwdep *hwdep; @@ -109,6 +130,7 @@ int __devinit snd_hda_create_hwdep(struct hda_codec *codec) sprintf(hwdep->name, "HDA Codec %d", codec->addr); hwdep->iface = SNDRV_HWDEP_IFACE_HDA; hwdep->private_data = codec; + hwdep->private_free = hwdep_free; hwdep->exclusive = 1; hwdep->ops.open = hda_hwdep_open; @@ -117,5 +139,215 @@ int __devinit snd_hda_create_hwdep(struct hda_codec *codec) hwdep->ops.ioctl_compat = hda_hwdep_ioctl_compat; #endif + snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32); + snd_array_init(&codec->hints, sizeof(char *), 32); + return 0; } + +#ifdef CONFIG_SND_HDA_RECONFIG + +/* + * sysfs interface + */ + +static int clear_codec(struct hda_codec *codec) +{ + snd_hda_codec_reset(codec); + clear_hwdep_elements(codec); + return 0; +} + +static int reconfig_codec(struct hda_codec *codec) +{ + int err; + + snd_printk(KERN_INFO "hda-codec: reconfiguring\n"); + snd_hda_codec_reset(codec); + err = snd_hda_codec_configure(codec); + if (err < 0) + return err; + /* rebuild PCMs */ + err = snd_hda_codec_build_pcms(codec); + if (err < 0) + return err; + /* rebuild mixers */ + err = snd_hda_codec_build_controls(codec); + if (err < 0) + return err; + return 0; +} + +/* + * allocate a string at most len chars, and remove the trailing EOL + */ +static char *kstrndup_noeol(const char *src, size_t len) +{ + char *s = kstrndup(src, len, GFP_KERNEL); + char *p; + if (!s) + return NULL; + p = strchr(s, '\n'); + if (p) + *p = 0; + return s; +} + +#define CODEC_INFO_SHOW(type) \ +static ssize_t type##_show(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); \ + struct hda_codec *codec = hwdep->private_data; \ + return sprintf(buf, "0x%x\n", codec->type); \ +} + +#define CODEC_INFO_STR_SHOW(type) \ +static ssize_t type##_show(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); \ + struct hda_codec *codec = hwdep->private_data; \ + return sprintf(buf, "%s\n", \ + codec->type ? codec->type : ""); \ +} + +CODEC_INFO_SHOW(vendor_id); +CODEC_INFO_SHOW(subsystem_id); +CODEC_INFO_SHOW(revision_id); +CODEC_INFO_SHOW(afg); +CODEC_INFO_SHOW(mfg); +CODEC_INFO_STR_SHOW(name); +CODEC_INFO_STR_SHOW(modelname); + +#define CODEC_INFO_STORE(type) \ +static ssize_t type##_store(struct device *dev, \ + struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); \ + struct hda_codec *codec = hwdep->private_data; \ + char *after; \ + codec->type = simple_strtoul(buf, &after, 0); \ + return count; \ +} + +#define CODEC_INFO_STR_STORE(type) \ +static ssize_t type##_store(struct device *dev, \ + struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); \ + struct hda_codec *codec = hwdep->private_data; \ + char *s = kstrndup_noeol(buf, 64); \ + if (!s) \ + return -ENOMEM; \ + kfree(codec->type); \ + codec->type = s; \ + return count; \ +} + +CODEC_INFO_STORE(vendor_id); +CODEC_INFO_STORE(subsystem_id); +CODEC_INFO_STORE(revision_id); +CODEC_INFO_STR_STORE(name); +CODEC_INFO_STR_STORE(modelname); + +#define CODEC_ACTION_STORE(type) \ +static ssize_t type##_store(struct device *dev, \ + struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); \ + struct hda_codec *codec = hwdep->private_data; \ + int err = 0; \ + if (*buf) \ + err = type##_codec(codec); \ + return err < 0 ? err : count; \ +} + +CODEC_ACTION_STORE(reconfig); +CODEC_ACTION_STORE(clear); + +static ssize_t init_verbs_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); + struct hda_codec *codec = hwdep->private_data; + char *p; + struct hda_verb verb, *v; + + verb.nid = simple_strtoul(buf, &p, 0); + verb.verb = simple_strtoul(p, &p, 0); + verb.param = simple_strtoul(p, &p, 0); + if (!verb.nid || !verb.verb || !verb.param) + return -EINVAL; + v = snd_array_new(&codec->init_verbs); + if (!v) + return -ENOMEM; + *v = verb; + return count; +} + +static ssize_t hints_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct snd_hwdep *hwdep = dev_get_drvdata(dev); + struct hda_codec *codec = hwdep->private_data; + char *p; + char **hint; + + if (!*buf || isspace(*buf) || *buf == '#' || *buf == '\n') + return count; + p = kstrndup_noeol(buf, 1024); + if (!p) + return -ENOMEM; + hint = snd_array_new(&codec->hints); + if (!hint) { + kfree(p); + return -ENOMEM; + } + *hint = p; + return count; +} + +#define CODEC_ATTR_RW(type) \ + __ATTR(type, 0644, type##_show, type##_store) +#define CODEC_ATTR_RO(type) \ + __ATTR_RO(type) +#define CODEC_ATTR_WO(type) \ + __ATTR(type, 0200, NULL, type##_store) + +static struct device_attribute codec_attrs[] = { + CODEC_ATTR_RW(vendor_id), + CODEC_ATTR_RW(subsystem_id), + CODEC_ATTR_RW(revision_id), + CODEC_ATTR_RO(afg), + CODEC_ATTR_RO(mfg), + CODEC_ATTR_RW(name), + CODEC_ATTR_RW(modelname), + CODEC_ATTR_WO(init_verbs), + CODEC_ATTR_WO(hints), + CODEC_ATTR_WO(reconfig), + CODEC_ATTR_WO(clear), +}; + +/* + * create sysfs files on hwdep directory + */ +int snd_hda_hwdep_add_sysfs(struct hda_codec *codec) +{ + struct snd_hwdep *hwdep = codec->hwdep; + int i; + + for (i = 0; i < ARRAY_SIZE(codec_attrs); i++) + snd_add_device_sysfs_file(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card, + hwdep->device, &codec_attrs[i]); + return 0; +} + +#endif /* CONFIG_SND_HDA_RECONFIG */ |