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-rw-r--r--Documentation/laptops/thinkpad-acpi.txt19
-rw-r--r--drivers/platform/x86/thinkpad_acpi.c159
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 " \
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 00:54:10 +0000