diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 5d02cc06d1a..e7b0c3bcef8 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -6541,7 +6541,8 @@ static int volume_set_status(const u8 status) return volume_set_status_ec(status); } -static int volume_set_mute_ec(const bool mute) +/* returns < 0 on error, 0 on no change, 1 on change */ +static int __volume_set_mute_ec(const bool mute) { int rc; u8 s, n; @@ -6556,22 +6557,37 @@ static int volume_set_mute_ec(const bool mute) n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : s & ~TP_EC_AUDIO_MUTESW_MSK; - if (n != s) + if (n != s) { rc = volume_set_status_ec(n); + if (!rc) + rc = 1; + } unlock: mutex_unlock(&volume_mutex); return rc; } +static int volume_alsa_set_mute(const bool mute) +{ + dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", + (mute) ? "" : "un"); + return __volume_set_mute_ec(mute); +} + static int volume_set_mute(const bool mute) { + int rc; + dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", (mute) ? "" : "un"); - return volume_set_mute_ec(mute); + + rc = __volume_set_mute_ec(mute); + return (rc < 0) ? rc : 0; } -static int volume_set_volume_ec(const u8 vol) +/* returns < 0 on error, 0 on no change, 1 on change */ +static int __volume_set_volume_ec(const u8 vol) { int rc; u8 s, n; @@ -6588,19 +6604,22 @@ static int volume_set_volume_ec(const u8 vol) n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; - if (n != s) + if (n != s) { rc = volume_set_status_ec(n); + if (!rc) + rc = 1; + } unlock: mutex_unlock(&volume_mutex); return rc; } -static int volume_set_volume(const u8 vol) +static int volume_alsa_set_volume(const u8 vol) { dbg_printk(TPACPI_DBG_MIXER, - "trying to set volume level to %hu\n", vol); - return volume_set_volume_ec(vol); + "ALSA: trying to set volume level to %hu\n", vol); + return __volume_set_volume_ec(vol); } static void volume_alsa_notify_change(void) @@ -6647,7 +6666,7 @@ static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - return volume_set_volume(ucontrol->value.integer.value[0]); + return volume_alsa_set_volume(ucontrol->value.integer.value[0]); } #define volume_alsa_mute_info snd_ctl_boolean_mono_info @@ -6670,7 +6689,7 @@ static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - return volume_set_mute(!ucontrol->value.integer.value[0]); + return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); } static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata = { |