aboutsummaryrefslogtreecommitdiff
path: root/drivers/platform
diff options
context:
space:
mode:
authorLen Brown <len.brown@intel.com>2009-12-30 02:51:05 -0500
committerLen Brown <len.brown@intel.com>2009-12-30 02:51:05 -0500
commitea840aa2d01cf107b331d04ddea46efaee583a83 (patch)
tree6e6349b137bb837d587cfed37d96663cac652c90 /drivers/platform
parent1ae22af7d750fbf665b7651fcbd3c15cc2d3793b (diff)
parent6e5b08ee941af38cfc6456158e7e04c1bc49306f (diff)
Merge branch 'thinkpad' into release
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/Kconfig28
-rw-r--r--drivers/platform/x86/thinkpad_acpi.c59
2 files changed, 73 insertions, 14 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index ec4faffe6b0..db32c25e360 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -231,8 +231,36 @@ config THINKPAD_ACPI
This driver was formerly known as ibm-acpi.
+ Extra functionality will be available if the rfkill (CONFIG_RFKILL)
+ and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
+ Note that if you want ThinkPad-ACPI to be built-in instead of
+ modular, ALSA and rfkill will also have to be built-in.
+
If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
+config THINKPAD_ACPI_ALSA_SUPPORT
+ bool "Console audio control ALSA interface"
+ depends on THINKPAD_ACPI
+ depends on SND
+ depends on SND = y || THINKPAD_ACPI = SND
+ default y
+ ---help---
+ Enables monitoring of the built-in console audio output control
+ (headphone and speakers), which is operated by the mute and (in
+ some ThinkPad models) volume hotkeys.
+
+ If this option is enabled, ThinkPad-ACPI will export an ALSA card
+ with a single read-only mixer control, which should be used for
+ on-screen-display feedback purposes by the Desktop Environment.
+
+ Optionally, the driver will also allow software control (the
+ ALSA mixer will be made read-write). Please refer to the driver
+ documentation for details.
+
+ All IBM models have both volume and mute control. Newer Lenovo
+ models only have mute control (the volume hotkeys are just normal
+ keys and volume control is done through the main HDA mixer).
+
config THINKPAD_ACPI_DEBUGFACILITIES
bool "Maintainer debug facilities"
depends on THINKPAD_ACPI
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 448c8aeb166..e67e4feb35c 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6384,11 +6384,13 @@ static struct ibm_struct brightness_driver_data = {
* and we leave them unchanged.
*/
+#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
+
#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
-static int alsa_index = SNDRV_DEFAULT_IDX1;
+static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
static char *alsa_id = "ThinkPadEC";
static int alsa_enable = SNDRV_DEFAULT_ENABLE1;
@@ -6705,10 +6707,11 @@ static int __init volume_create_alsa_mixer(void)
rc = snd_card_create(alsa_index, alsa_id, THIS_MODULE,
sizeof(struct tpacpi_alsa_data), &card);
- if (rc < 0)
- return rc;
- if (!card)
- return -ENOMEM;
+ if (rc < 0 || !card) {
+ printk(TPACPI_ERR
+ "Failed to create ALSA card structures: %d\n", rc);
+ return 1;
+ }
BUG_ON(!card->private_data);
data = card->private_data;
@@ -6741,8 +6744,9 @@ static int __init volume_create_alsa_mixer(void)
rc = snd_ctl_add(card, ctl_vol);
if (rc < 0) {
printk(TPACPI_ERR
- "Failed to create ALSA volume control\n");
- goto err_out;
+ "Failed to create ALSA volume control: %d\n",
+ rc);
+ goto err_exit;
}
data->ctl_vol_id = &ctl_vol->id;
}
@@ -6750,22 +6754,25 @@ static int __init volume_create_alsa_mixer(void)
ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
rc = snd_ctl_add(card, ctl_mute);
if (rc < 0) {
- printk(TPACPI_ERR "Failed to create ALSA mute control\n");
- goto err_out;
+ printk(TPACPI_ERR "Failed to create ALSA mute control: %d\n",
+ rc);
+ goto err_exit;
}
data->ctl_mute_id = &ctl_mute->id;
snd_card_set_dev(card, &tpacpi_pdev->dev);
rc = snd_card_register(card);
-
-err_out:
if (rc < 0) {
- snd_card_free(card);
- card = NULL;
+ printk(TPACPI_ERR "Failed to register ALSA card: %d\n", rc);
+ goto err_exit;
}
alsa_card = card;
- return rc;
+ return 0;
+
+err_exit:
+ snd_card_free(card);
+ return 1;
}
#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
@@ -7016,6 +7023,28 @@ static struct ibm_struct volume_driver_data = {
.shutdown = volume_shutdown,
};
+#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+#define alsa_card NULL
+
+static void inline volume_alsa_notify_change(void)
+{
+}
+
+static int __init volume_init(struct ibm_init_struct *iibm)
+{
+ printk(TPACPI_INFO
+ "volume: disabled as there is no ALSA support in this kernel\n");
+
+ return 1;
+}
+
+static struct ibm_struct volume_driver_data = {
+ .name = "volume",
+};
+
+#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
/*************************************************************************
* Fan subdriver
*/
@@ -8738,6 +8767,7 @@ MODULE_PARM_DESC(hotkey_report_mode,
"used for backwards compatibility with userspace, "
"see documentation");
+#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
module_param_named(volume_mode, volume_mode, uint, 0444);
MODULE_PARM_DESC(volume_mode,
"Selects volume control strategy: "
@@ -8760,6 +8790,7 @@ module_param_named(id, alsa_id, charp, 0444);
MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
module_param_named(enable, alsa_enable, bool, 0444);
MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
+#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
#define TPACPI_PARAM(feature) \
module_param_call(feature, set_ibm_param, NULL, NULL, 0); \