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Merge branch 'thinkpad-acpi' into for-next

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thinkpad-acpi:
  acpi: Remove _OSI(Linux) for ThinkPads
  thinkpad-acpi: Try to use full software mute control

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Darren Hart 2014-12-10 20:49:57 -08:00
commit cc888de2c3
2 changed files with 106 additions and 64 deletions
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54
drivers/acpi/blacklist.c
View File

@ -304,60 +304,6 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
* Linux ignores it, except for the machines enumerated below.
*/
/*
* Lenovo has a mix of systems OSI(Linux) situations
* and thus we can not wildcard the vendor.
*
* _OSI(Linux) helps sound
* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
* T400, T500
* _OSI(Linux) has Linux specific hooks
* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
* _OSI(Linux) is a NOP:
* DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
* DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
*/
{
.callback = dmi_enable_osi_linux,
.ident = "Lenovo ThinkPad R61",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
},
},
{
.callback = dmi_enable_osi_linux,
.ident = "Lenovo ThinkPad T61",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
},
},
{
.callback = dmi_enable_osi_linux,
.ident = "Lenovo ThinkPad X61",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
},
},
{
.callback = dmi_enable_osi_linux,
.ident = "Lenovo ThinkPad T400",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
},
},
{
.callback = dmi_enable_osi_linux,
.ident = "Lenovo ThinkPad T500",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
},
},
/*
* Without this this EEEpc exports a non working WMI interface, with
* this it exports a working "good old" eeepc_laptop interface, fixing

116
drivers/platform/x86/thinkpad_acpi.c
View File

@ -6559,6 +6559,17 @@ static struct ibm_struct brightness_driver_data = {
* bits 3-0 (volume). Other bits in NVRAM may have other functions,
* such as bit 7 which is used to detect repeated presses of MUTE,
* and we leave them unchanged.
*
* On newer Lenovo ThinkPads, the EC can automatically change the volume
* in response to user input. Unfortunately, this rarely works well.
* The laptop changes the state of its internal MUTE gate and, on some
* models, sends KEY_MUTE, causing any user code that responds to the
* mute button to get confused. The hardware MUTE gate is also
* unnecessary, since user code can handle the mute button without
* kernel or EC help.
*
* To avoid confusing userspace, we simply disable all EC-based mute
* and volume controls when possible.
*/
#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
@ -6613,11 +6624,21 @@ enum tpacpi_volume_capabilities {
TPACPI_VOL_CAP_MAX
};
enum tpacpi_mute_btn_mode {
TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
/* We don't know what mode 1 is. */
TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
};
static enum tpacpi_volume_access_mode volume_mode =
TPACPI_VOL_MODE_MAX;
static enum tpacpi_volume_capabilities volume_capabilities;
static bool volume_control_allowed;
static bool software_mute_requested = true;
static bool software_mute_active;
static int software_mute_orig_mode;
/*
* Used to syncronize writers to TP_EC_AUDIO and
@ -6635,6 +6656,8 @@ static void tpacpi_volume_checkpoint_nvram(void)
return;
if (!volume_control_allowed)
return;
if (software_mute_active)
return;
vdbg_printk(TPACPI_DBG_MIXER,
"trying to checkpoint mixer state to NVRAM...\n");
@ -6696,6 +6719,12 @@ static int volume_set_status_ec(const u8 status)
dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
/*
* On X200s, and possibly on others, it can take a while for
* reads to become correct.
*/
msleep(1);
return 0;
}
@ -6778,6 +6807,57 @@ unlock:
return rc;
}
static int volume_set_software_mute(bool startup)
{
int result;
if (!tpacpi_is_lenovo())
return -ENODEV;
if (startup) {
if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
"HAUM", "qd"))
return -EIO;
dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
"Initial HAUM setting was %d\n",
software_mute_orig_mode);
}
if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
(int)TP_EC_MUTE_BTN_NONE))
return -EIO;
if (result != TP_EC_MUTE_BTN_NONE)
pr_warn("Unexpected SAUM result %d\n",
result);
/*
* In software mute mode, the standard codec controls take
* precendence, so we unmute the ThinkPad HW switch at
* startup. Just on case there are SAUM-capable ThinkPads
* with level controls, set max HW volume as well.
*/
if (tp_features.mixer_no_level_control)
result = volume_set_mute(false);
else
result = volume_set_status(TP_EC_VOLUME_MAX);
if (result != 0)
pr_warn("Failed to unmute the HW mute switch\n");
return 0;
}
static void volume_exit_software_mute(void)
{
int r;
if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
|| r != software_mute_orig_mode)
pr_warn("Failed to restore mute mode\n");
}
static int volume_alsa_set_volume(const u8 vol)
{
dbg_printk(TPACPI_DBG_MIXER,
@ -6885,7 +6965,12 @@ static void volume_suspend(void)
static void volume_resume(void)
{
volume_alsa_notify_change();
if (software_mute_active) {
if (volume_set_software_mute(false) < 0)
pr_warn("Failed to restore software mute\n");
} else {
volume_alsa_notify_change();
}
}
static void volume_shutdown(void)
@ -6901,6 +6986,9 @@ static void volume_exit(void)
}
tpacpi_volume_checkpoint_nvram();
if (software_mute_active)
volume_exit_software_mute();
}
static int __init volume_create_alsa_mixer(void)
@ -7085,16 +7173,20 @@ static int __init volume_init(struct ibm_init_struct *iibm)
"mute is supported, volume control is %s\n",
str_supported(!tp_features.mixer_no_level_control));
rc = volume_create_alsa_mixer();
if (rc) {
pr_err("Could not create the ALSA mixer interface\n");
return rc;
}
if (software_mute_requested && volume_set_software_mute(true) == 0) {
software_mute_active = true;
} else {
rc = volume_create_alsa_mixer();
if (rc) {
pr_err("Could not create the ALSA mixer interface\n");
return rc;
}
pr_info("Console audio control enabled, mode: %s\n",
(volume_control_allowed) ?
"override (read/write)" :
"monitor (read only)");
pr_info("Console audio control enabled, mode: %s\n",
(volume_control_allowed) ?
"override (read/write)" :
"monitor (read only)");
}
vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
"registering volume hotkeys as change notification\n");
@ -9091,6 +9183,10 @@ MODULE_PARM_DESC(volume_control,
"Enables software override for the console audio "
"control when true");
module_param_named(software_mute, software_mute_requested, bool, 0444);
MODULE_PARM_DESC(software_mute,
"Request full software mute control");
/* ALSA module API parameters */
module_param_named(index, alsa_index, int, 0444);
MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");