Reenabled linux-xen, added patches for Xen Kernel Version 2.6.27.31,

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.arch / thinkpad_fingers_off_backlight_igd.patch

diff --git a/src/patches/suse-2.6.27.31/patches.arch/thinkpad_fingers_off_backlight_igd.patch b/src/patches/suse-2.6.27.31/patches.arch/thinkpad_fingers_off_backlight_igd.patch
new file mode 100644 (file)
index 0000000..1e61958
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.arch/thinkpad_fingers_off_backlight_igd.patch
@@ -0,0 +1,144 @@
+From: Thomas Renninger <trenn@stravinsky.suse.de>
+Subject: Serve ThinkPad IGD devices backlight functionality through thinkpad_acpi
+References: fate #302883
+
+In future IDG devices will be handled by the dri subsystem.
+But this code is very young and complex, better workaround this in
+thinkpad_acpi driver for now.
+
+If in a later service pack the IGD parts get backported, this patch must
+be reverted.
+
+Signed-off-by: Thomas Renninger <trenn@suse.de>
+---
+ drivers/acpi/video_detect.c  |   15 +++++++++++++++
+ drivers/misc/thinkpad_acpi.c |   40 ++++++++++++++++++++++++++++++++++++----
+ include/linux/acpi.h         |    2 ++
+ 3 files changed, 53 insertions(+), 4 deletions(-)
+
+--- a/drivers/acpi/video_detect.c
++++ b/drivers/acpi/video_detect.c
+@@ -99,6 +99,21 @@ long acpi_is_video_device(struct acpi_de
+                                   ACPI_UINT32_MAX, acpi_backlight_cap_match,
+                                   &video_caps, NULL);
+ 
++      /* IGD detection is not perfect. It should use the same method as done
++       * to identify an IGD device in the dri parts or video.ko
++       */
++
++      /*
++       * ThinkPads do need the IGD implementation, we detect ThinkPad IGD
++       * devices here and specially workaround it in thinkpad_acpi as the
++       * IGD parts are too experimental yet
++      */
++      if (dmi_name_in_vendors("LENOVO") &&
++          ACPI_SUCCESS(acpi_get_handle(device->handle, "DRDY", &h_dummy))) {
++              ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IGD device\n"));
++              video_caps |= ACPI_VIDEO_IGD;
++      }
++
+       return video_caps;
+ }
+ EXPORT_SYMBOL(acpi_is_video_device);
+--- a/drivers/misc/thinkpad_acpi.c
++++ b/drivers/misc/thinkpad_acpi.c
+@@ -240,6 +240,7 @@ static struct {
+       u32 light_status:1;
+       u32 bright_16levels:1;
+       u32 bright_acpimode:1;
++      u32 bright_igdmode:1;
+       u32 wan:1;
+       u32 fan_ctrl_status_undef:1;
+       u32 input_device_registered:1;
+@@ -2359,6 +2360,9 @@ err_exit:
+       return (res < 0)? res : 1;
+ }
+ 
++static struct backlight_device *ibm_backlight_device;
++static int brightness_update_status(struct backlight_device *bd);
++
+ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
+ {
+       u32 hkey;
+@@ -2397,6 +2401,28 @@ static void hotkey_notify(struct ibm_str
+               case 1:
+                       /* 0x1000-0x1FFF: key presses */
+                       scancode = hkey & 0xfff;
++                      if (tp_features.bright_igdmode) {
++                              /* ToDo:
++                               * Is there an already defined key?
++                               */
++                              if (hkey == 0x1011) {
++                                      if (ibm_backlight_device->
++                                          props.brightness > 0) {
++                                              ibm_backlight_device->
++                                                      props.brightness--;
++                                      }
++                              } else if (hkey == 0x1010) {
++                                      if (ibm_backlight_device->
++                                          props.brightness <
++                                          ibm_backlight_device->
++                                          props.max_brightness) {
++                                              ibm_backlight_device->
++                                                      props.brightness++;
++                                      }
++                              }
++                              brightness_update_status(ibm_backlight_device);
++                      }
++
+                       if (scancode > 0 && scancode < 0x21) {
+                               scancode--;
+                               if (!(hotkey_source_mask & (1 << scancode))) {
+@@ -4767,7 +4793,6 @@ enum {
+       TP_EC_BACKLIGHT_MAPSW = 0x20,
+ };
+ 
+-static struct backlight_device *ibm_backlight_device;
+ static int brightness_mode;
+ static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
+ 
+@@ -4906,7 +4931,7 @@ static struct backlight_ops ibm_backligh
+ static int __init brightness_init(struct ibm_init_struct *iibm)
+ {
+       int b;
+-
++      long acpi_video_support;
+       vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
+ 
+       mutex_init(&brightness_mutex);
+@@ -4918,8 +4943,9 @@ static int __init brightness_init(struct
+        */
+       b = tpacpi_check_std_acpi_brightness_support();
+       if (b > 0) {
+-
+-              if (acpi_video_backlight_support()) {
++              acpi_video_support = acpi_video_backlight_support();
++              if (acpi_video_support &&
++                  !(acpi_video_support & ACPI_VIDEO_IGD)) {
+                       if (brightness_enable > 1) {
+                               printk(TPACPI_NOTICE
+                                      "Standard ACPI backlight interface "
+@@ -4937,6 +4963,12 @@ static int __init brightness_init(struct
+                                      "available, thinkpad_acpi driver "
+                                      "will take over control\n");
+                       }
++                      if (acpi_video_support & ACPI_VIDEO_IGD) {
++                              printk(TPACPI_NOTICE, "IGD device"
++                                     " detected - take over backlight"
++                                     " switching\n");
++                              tp_features.bright_igdmode = 1;
++                      }
+               }
+       }
+ 
+--- a/include/linux/acpi.h
++++ b/include/linux/acpi.h
+@@ -214,6 +214,8 @@ extern bool wmi_has_guid(const char *gui
+ #define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO                        0x0200
+ #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR                0x0400
+ #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO         0x0800
++/* Do not use the IGD define, this is a SUSE only ThinkPad workaround hack! */
++#define ACPI_VIDEO_IGD                                        0x1000
+ 
+ #if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
+