diff options
| -rw-r--r-- | Documentation/laptops/thinkpad-acpi.txt | 19 | ||||
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 159 |
2 files changed, 149 insertions, 29 deletions
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt index 96687d0106a9..bd87682103c1 100644 --- a/Documentation/laptops/thinkpad-acpi.txt +++ b/Documentation/laptops/thinkpad-acpi.txt @@ -1098,18 +1098,31 @@ Volume control procfs: /proc/acpi/ibm/volume This feature allows volume control on ThinkPad models with a digital -volume knob, as well as mute/unmute control. The available commands are: +volume knob (when available, not all models have it), as well as +mute/unmute control. The available commands are: echo up >/proc/acpi/ibm/volume echo down >/proc/acpi/ibm/volume echo mute >/proc/acpi/ibm/volume + echo unmute >/proc/acpi/ibm/volume echo 'level <level>' >/proc/acpi/ibm/volume The <level> number range is 0 to 14 although not all of them may be distinct. The unmute the volume after the mute command, use either the -up or down command (the level command will not unmute the volume). +up or down command (the level command will not unmute the volume), or +the unmute command. + The current volume level and mute state is shown in the file. +You can use the volume_capabilities parameter to tell the driver +whether your thinkpad has volume control or mute-only control: +volume_capabilities=1 for mixers with mute and volume control, +volume_capabilities=2 for mixers with only mute control. + +If the driver misdetects the capabilities for your ThinkPad model, +please report this to ibm-acpi-devel@lists.sourceforge.net, so that we +can update the driver. + There are two strategies for volume control. To select which one should be used, use the volume_mode module parameter: volume_mode=1 selects EC mode, and volume_mode=3 selects EC mode with NVRAM backing @@ -1450,3 +1463,5 @@ Sysfs interface changelog: is deprecated and marked for removal. 0x020600: Marker for backlight change event support. + +0x020700: Support for mute-only mixers. diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index a2f5312c6a4e..4d909d5a0340 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -22,7 +22,7 @@ */ #define TPACPI_VERSION "0.23" -#define TPACPI_SYSFS_VERSION 0x020600 +#define TPACPI_SYSFS_VERSION 0x020700 /* * Changelog: @@ -299,6 +299,7 @@ static struct { u32 fan_ctrl_status_undef:1; u32 second_fan:1; u32 beep_needs_two_args:1; + u32 mixer_no_level_control:1; u32 input_device_registered:1; u32 platform_drv_registered:1; u32 platform_drv_attrs_registered:1; @@ -426,6 +427,12 @@ static void tpacpi_log_usertask(const char * const what) .ec = TPACPI_MATCH_ANY, \ .quirks = (__quirk) } +#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ + { .vendor = PCI_VENDOR_ID_LENOVO, \ + .bios = TPACPI_MATCH_ANY, \ + .ec = TPID(__id1, __id2), \ + .quirks = (__quirk) } + struct tpacpi_quirk { unsigned int vendor; u16 bios; @@ -6416,9 +6423,17 @@ enum tpacpi_volume_access_mode { TPACPI_VOL_MODE_MAX }; +enum tpacpi_volume_capabilities { + TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ + TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ + TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ + TPACPI_VOL_CAP_MAX +}; + static enum tpacpi_volume_access_mode volume_mode = TPACPI_VOL_MODE_MAX; +static enum tpacpi_volume_capabilities volume_capabilities; /* * Used to syncronize writers to TP_EC_AUDIO and @@ -6430,7 +6445,7 @@ static void tpacpi_volume_checkpoint_nvram(void) { u8 lec = 0; u8 b_nvram; - const u8 ec_mask = TP_EC_AUDIO_LVL_MSK | TP_EC_AUDIO_MUTESW_MSK; + u8 ec_mask; if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) return; @@ -6438,6 +6453,11 @@ static void tpacpi_volume_checkpoint_nvram(void) vdbg_printk(TPACPI_DBG_MIXER, "trying to checkpoint mixer state to NVRAM...\n"); + if (tp_features.mixer_no_level_control) + ec_mask = TP_EC_AUDIO_MUTESW_MSK; + else + ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; + if (mutex_lock_killable(&volume_mutex) < 0) return; @@ -6575,8 +6595,36 @@ static void volume_exit(void) tpacpi_volume_checkpoint_nvram(); } +#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ +#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ + +static const struct tpacpi_quirk volume_quirk_table[] __initconst = { + /* Whitelist volume level on all IBM by default */ + { .vendor = PCI_VENDOR_ID_IBM, + .bios = TPACPI_MATCH_ANY, + .ec = TPACPI_MATCH_ANY, + .quirks = TPACPI_VOL_Q_LEVEL }, + + /* Lenovo models with volume control (needs confirmation) */ + TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ + TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ + TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ + TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ + TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ + TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ + TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ + + /* Whitelist mute-only on all Lenovo by default */ + { .vendor = PCI_VENDOR_ID_LENOVO, + .bios = TPACPI_MATCH_ANY, + .ec = TPACPI_MATCH_ANY, + .quirks = TPACPI_VOL_Q_MUTEONLY } +}; + static int __init volume_init(struct ibm_init_struct *iibm) { + unsigned long quirks; + vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); mutex_init(&volume_mutex); @@ -6596,6 +6644,36 @@ static int __init volume_init(struct ibm_init_struct *iibm) return 1; } + if (volume_capabilities >= TPACPI_VOL_CAP_MAX) + return -EINVAL; + + quirks = tpacpi_check_quirks(volume_quirk_table, + ARRAY_SIZE(volume_quirk_table)); + + switch (volume_capabilities) { + case TPACPI_VOL_CAP_AUTO: + if (quirks & TPACPI_VOL_Q_MUTEONLY) + tp_features.mixer_no_level_control = 1; + else if (quirks & TPACPI_VOL_Q_LEVEL) + tp_features.mixer_no_level_control = 0; + else + return 1; /* no mixer */ + break; + case TPACPI_VOL_CAP_VOLMUTE: + tp_features.mixer_no_level_control = 0; + break; + case TPACPI_VOL_CAP_MUTEONLY: + tp_features.mixer_no_level_control = 1; + break; + default: + return 1; + } + + if (volume_capabilities != TPACPI_VOL_CAP_AUTO) + dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, + "using user-supplied volume_capabilities=%d\n", + volume_capabilities); + if (volume_mode == TPACPI_VOL_MODE_AUTO || volume_mode == TPACPI_VOL_MODE_MAX) { volume_mode = TPACPI_VOL_MODE_ECNVRAM; @@ -6610,7 +6688,8 @@ static int __init volume_init(struct ibm_init_struct *iibm) } vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "volume is supported\n"); + "mute is supported, volume control is %s\n", + str_supported(!tp_features.mixer_no_level_control)); return 0; } @@ -6623,13 +6702,21 @@ static int volume_read(char *p) if (volume_get_status(&status) < 0) { len += sprintf(p + len, "level:\t\tunreadable\n"); } else { - len += sprintf(p + len, "level:\t\t%d\n", - status & TP_EC_AUDIO_LVL_MSK); + if (tp_features.mixer_no_level_control) + len += sprintf(p + len, "level:\t\tunsupported\n"); + else + len += sprintf(p + len, "level:\t\t%d\n", + status & TP_EC_AUDIO_LVL_MSK); + len += sprintf(p + len, "mute:\t\t%s\n", onoff(status, TP_EC_AUDIO_MUTESW)); - len += sprintf(p + len, "commands:\tup, down, mute\n"); - len += sprintf(p + len, "commands:\tlevel <level>" + + len += sprintf(p + len, "commands:\tunmute, mute\n"); + if (!tp_features.mixer_no_level_control) { + len += sprintf(p + len, "commands:\tup, down\n"); + len += sprintf(p + len, "commands:\tlevel <level>" " (<level> is 0-%d)\n", TP_EC_VOLUME_MAX); + } } return len; @@ -6651,30 +6738,43 @@ static int volume_write(char *buf) new_mute = s & TP_EC_AUDIO_MUTESW_MSK; while ((cmd = next_cmd(&buf))) { - if (strlencmp(cmd, "up") == 0) { - if (new_mute) - new_mute = 0; - else if (new_level < TP_EC_VOLUME_MAX) - new_level++; - } else if (strlencmp(cmd, "down") == 0) { - if (new_mute) - new_mute = 0; - else if (new_level > 0) - new_level--; - } else if (sscanf(cmd, "level %u", &l) == 1 && - l >= 0 && l <= TP_EC_VOLUME_MAX) { - new_level = l; - } else if (strlencmp(cmd, "mute") == 0) { + if (!tp_features.mixer_no_level_control) { + if (strlencmp(cmd, "up") == 0) { + if (new_mute) + new_mute = 0; + else if (new_level < TP_EC_VOLUME_MAX) + new_level++; + continue; + } else if (strlencmp(cmd, "down") == 0) { + if (new_mute) + new_mute = 0; + else if (new_level > 0) + new_level--; + continue; + } else if (sscanf(cmd, "level %u", &l) == 1 && + l >= 0 && l <= TP_EC_VOLUME_MAX) { + new_level = l; + continue; + } + } + if (strlencmp(cmd, "mute") == 0) new_mute = TP_EC_AUDIO_MUTESW_MSK; - } else + else if (strlencmp(cmd, "unmute") == 0) + new_mute = 0; + else return -EINVAL; } - tpacpi_disclose_usertask("procfs volume", - "%smute and set level to %d\n", - new_mute ? "" : "un", new_level); - - rc = volume_set_status(new_mute | new_level); + if (tp_features.mixer_no_level_control) { + tpacpi_disclose_usertask("procfs volume", "%smute\n", + new_mute ? "" : "un"); + rc = volume_set_mute(!!new_mute); + } else { + tpacpi_disclose_usertask("procfs volume", + "%smute and set level to %d\n", + new_mute ? "" : "un", new_level); + rc = volume_set_status(new_mute | new_level); + } return (rc == -EINTR) ? -ERESTARTSYS : rc; } @@ -8410,6 +8510,11 @@ MODULE_PARM_DESC(volume_mode, "Selects volume control strategy: " "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); +module_param_named(volume_capabilities, volume_capabilities, uint, 0444); +MODULE_PARM_DESC(volume_capabilities, + "Selects the mixer capabilites: " + "0=auto, 1=volume and mute, 2=mute only"); + #define TPACPI_PARAM(feature) \ module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ |