* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/mm.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
/* apply the function to all matching slave ctls in the mixer list */
static int map_slaves(struct hda_codec *codec, const char * const *slaves,
- map_slave_func_t func, void *data)
+ const char *suffix, map_slave_func_t func, void *data)
{
struct hda_nid_item *items;
const char * const *s;
sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
continue;
for (s = slaves; *s; s++) {
- if (!strcmp(sctl->id.name, *s)) {
+ char tmpname[sizeof(sctl->id.name)];
+ const char *name = *s;
+ if (suffix) {
+ snprintf(tmpname, sizeof(tmpname), "%s %s",
+ name, suffix);
+ name = tmpname;
+ }
+ if (!strcmp(sctl->id.name, name)) {
err = func(data, sctl);
if (err)
return err;
return 1;
}
+/* guess the value corresponding to 0dB */
+static int get_kctl_0dB_offset(struct snd_kcontrol *kctl)
+{
+ int _tlv[4];
+ const int *tlv = NULL;
+ int val = -1;
+
+ if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
+ /* FIXME: set_fs() hack for obtaining user-space TLV data */
+ mm_segment_t fs = get_fs();
+ set_fs(get_ds());
+ if (!kctl->tlv.c(kctl, 0, sizeof(_tlv), _tlv))
+ tlv = _tlv;
+ set_fs(fs);
+ } else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ)
+ tlv = kctl->tlv.p;
+ if (tlv && tlv[0] == SNDRV_CTL_TLVT_DB_SCALE)
+ val = -tlv[2] / tlv[3];
+ return val;
+}
+
+/* call kctl->put with the given value(s) */
+static int put_kctl_with_value(struct snd_kcontrol *kctl, int val)
+{
+ struct snd_ctl_elem_value *ucontrol;
+ ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL);
+ if (!ucontrol)
+ return -ENOMEM;
+ ucontrol->value.integer.value[0] = val;
+ ucontrol->value.integer.value[1] = val;
+ kctl->put(kctl, ucontrol);
+ kfree(ucontrol);
+ return 0;
+}
+
+/* initialize the slave volume with 0dB */
+static int init_slave_0dB(void *data, struct snd_kcontrol *slave)
+{
+ int offset = get_kctl_0dB_offset(slave);
+ if (offset > 0)
+ put_kctl_with_value(slave, offset);
+ return 0;
+}
+
+/* unmute the slave */
+static int init_slave_unmute(void *data, struct snd_kcontrol *slave)
+{
+ return put_kctl_with_value(slave, 1);
+}
+
/**
* snd_hda_add_vmaster - create a virtual master control and add slaves
* @codec: HD-audio codec
* @name: vmaster control name
* @tlv: TLV data (optional)
* @slaves: slave control names (optional)
+ * @suffix: suffix string to each slave name (optional)
+ * @init_slave_vol: initialize slaves to unmute/0dB
+ * @ctl_ret: store the vmaster kcontrol in return
*
* Create a virtual master control with the given name. The TLV data
* must be either NULL or a valid data.
*
* This function returns zero if successful or a negative error code.
*/
-int snd_hda_add_vmaster(struct hda_codec *codec, char *name,
- unsigned int *tlv, const char * const *slaves)
+int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
+ unsigned int *tlv, const char * const *slaves,
+ const char *suffix, bool init_slave_vol,
+ struct snd_kcontrol **ctl_ret)
{
struct snd_kcontrol *kctl;
int err;
- err = map_slaves(codec, slaves, check_slave_present, NULL);
+ if (ctl_ret)
+ *ctl_ret = NULL;
+
+ err = map_slaves(codec, slaves, suffix, check_slave_present, NULL);
if (err != 1) {
snd_printdd("No slave found for %s\n", name);
return 0;
if (err < 0)
return err;
- err = map_slaves(codec, slaves, (map_slave_func_t)snd_ctl_add_slave,
- kctl);
+ err = map_slaves(codec, slaves, suffix,
+ (map_slave_func_t)snd_ctl_add_slave, kctl);
if (err < 0)
return err;
+
+ /* init with master mute & zero volume */
+ put_kctl_with_value(kctl, 0);
+ if (init_slave_vol)
+ map_slaves(codec, slaves, suffix,
+ tlv ? init_slave_0dB : init_slave_unmute, kctl);
+
+ if (ctl_ret)
+ *ctl_ret = kctl;
return 0;
}
-EXPORT_SYMBOL_HDA(snd_hda_add_vmaster);
+EXPORT_SYMBOL_HDA(__snd_hda_add_vmaster);
+
+/*
+ * mute-LED control using vmaster
+ */
+static int vmaster_mute_mode_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ static const char * const texts[] = {
+ "Off", "On", "Follow Master"
+ };
+ unsigned int index;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = 3;
+ index = uinfo->value.enumerated.item;
+ if (index >= 3)
+ index = 2;
+ strcpy(uinfo->value.enumerated.name, texts[index]);
+ return 0;
+}
+
+static int vmaster_mute_mode_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol);
+ ucontrol->value.enumerated.item[0] = hook->mute_mode;
+ return 0;
+}
+
+static int vmaster_mute_mode_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol);
+ unsigned int old_mode = hook->mute_mode;
+
+ hook->mute_mode = ucontrol->value.enumerated.item[0];
+ if (hook->mute_mode > HDA_VMUTE_FOLLOW_MASTER)
+ hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER;
+ if (old_mode == hook->mute_mode)
+ return 0;
+ snd_hda_sync_vmaster_hook(hook);
+ return 1;
+}
+
+static struct snd_kcontrol_new vmaster_mute_mode = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Mute-LED Mode",
+ .info = vmaster_mute_mode_info,
+ .get = vmaster_mute_mode_get,
+ .put = vmaster_mute_mode_put,
+};
+
+/*
+ * Add a mute-LED hook with the given vmaster switch kctl
+ * "Mute-LED Mode" control is automatically created and associated with
+ * the given hook.
+ */
+int snd_hda_add_vmaster_hook(struct hda_codec *codec,
+ struct hda_vmaster_mute_hook *hook,
+ bool expose_enum_ctl)
+{
+ struct snd_kcontrol *kctl;
+
+ if (!hook->hook || !hook->sw_kctl)
+ return 0;
+ snd_ctl_add_vmaster_hook(hook->sw_kctl, hook->hook, codec);
+ hook->codec = codec;
+ hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER;
+ if (!expose_enum_ctl)
+ return 0;
+ kctl = snd_ctl_new1(&vmaster_mute_mode, hook);
+ if (!kctl)
+ return -ENOMEM;
+ return snd_hda_ctl_add(codec, 0, kctl);
+}
+EXPORT_SYMBOL_HDA(snd_hda_add_vmaster_hook);
+
+/*
+ * Call the hook with the current value for synchronization
+ * Should be called in init callback
+ */
+void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook)
+{
+ if (!hook->hook || !hook->codec)
+ return;
+ switch (hook->mute_mode) {
+ case HDA_VMUTE_FOLLOW_MASTER:
+ snd_ctl_sync_vmaster_hook(hook->sw_kctl);
+ break;
+ default:
+ hook->hook(hook->codec, hook->mute_mode);
+ break;
+ }
+}
+EXPORT_SYMBOL_HDA(snd_hda_sync_vmaster_hook);
+
/**
* snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch
list_for_each_entry(codec, &bus->codec_list, list) {
if (hda_codec_is_power_on(codec))
hda_call_codec_suspend(codec);
+ else /* forcibly change the power to D3 even if not used */
+ hda_set_power_state(codec,
+ codec->afg ? codec->afg : codec->mfg,
+ AC_PWRST_D3);
if (codec->patch_ops.post_suspend)
codec->patch_ops.post_suspend(codec);
}
projects / karo-tx-linux.git / blobdiff