linux.git/drivers/platform, branch vsnprintf Linux kernel source tree Merge tag 'acpi-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 2024-12-21T18:42:35+00:00 Linus Torvalds torvalds@linux-foundation.org 2024-12-21T18:42:35+00:00 5100b6f9e7bfc520e8129a5042a4bdd7dd486df6 Pull ACPI fix from Rafael Wysocki: "Unbreak ACPI EC support on LoongArch that has been broken earlier in this development cycle (Huacai Chen)" * tag 'acpi-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: EC: Enable EC support on LoongArch by default 
Pull ACPI fix from Rafael Wysocki:
 "Unbreak ACPI EC support on LoongArch that has been broken earlier in
  this development cycle (Huacai Chen)"

* tag 'acpi-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: EC: Enable EC support on LoongArch by default
ACPI: EC: Enable EC support on LoongArch by default 2024-12-18T19:23:59+00:00 Huacai Chen chenhuacai@loongson.cn 2024-12-17T07:37:04+00:00 0674188f2f4d38d74aa863f17373d76256f2ed09 Commit a6021aa24f6417416d933 ("ACPI: EC: make EC support compile-time conditional") only enable ACPI_EC on X86 by default, but the embedded controller is also widely used on LoongArch laptops so we also enable ACPI_EC for LoongArch. The laptop driver cannot work without EC, so also update the dependency of LOONGSON_LAPTOP to let it depend on APCI_EC. Fixes: a6021aa24f6417416d933 ("ACPI: EC: make EC support compile-time conditional") Reported-by: Xiaotian Wu <wuxiaotian@loongson.cn> Tested-by: Binbin Zhou <zhoubinbin@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://patch.msgid.link/20241217073704.3339587-1-chenhuacai@loongson.cn [ rjw: Added Fixes: ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 
Commit a6021aa24f6417416d933 ("ACPI: EC: make EC support compile-time
conditional") only enable ACPI_EC on X86 by default, but the embedded
controller is also widely used on LoongArch laptops so we also enable
ACPI_EC for LoongArch.

The laptop driver cannot work without EC, so also update the dependency
of LOONGSON_LAPTOP to let it depend on APCI_EC.

Fixes: a6021aa24f6417416d933 ("ACPI: EC: make EC support compile-time conditional")
Reported-by: Xiaotian Wu <wuxiaotian@loongson.cn>
Tested-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/20241217073704.3339587-1-chenhuacai@loongson.cn
[ rjw: Added Fixes: ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge tag 'platform-drivers-x86-v6.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 2024-12-16T18:01:57+00:00 Linus Torvalds torvalds@linux-foundation.org 2024-12-16T18:01:57+00:00 dc690bc256edd9da6596fccf978327309173f44a Pull x86 platform driver fixes from Ilpo Järvinen: - alienware-wmi: - Add support for Alienware m16 R1 AMD - Do not setup legacy LED control with X and G Series - intel/ifs: Clearwater Forest support - intel/vsec: Panther Lake support - p2sb: Do not hide the device if BIOS left it unhidden - touchscreen_dmi: Add SARY Tab 3 tablet information * tag 'platform-drivers-x86-v6.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86/intel/vsec: Add support for Panther Lake platform/x86/intel/ifs: Add Clearwater Forest to CPU support list platform/x86: touchscreen_dmi: Add info for SARY Tab 3 tablet p2sb: Do not scan and remove the P2SB device when it is unhidden p2sb: Move P2SB hide and unhide code to p2sb_scan_and_cache() p2sb: Introduce the global flag p2sb_hidden_by_bios p2sb: Factor out p2sb_read_from_cache() alienware-wmi: Adds support to Alienware m16 R1 AMD alienware-wmi: Fix X Series and G Series quirks 
Pull x86 platform driver fixes from Ilpo Järvinen:

 - alienware-wmi:
    - Add support for Alienware m16 R1 AMD
    - Do not setup legacy LED control with X and G Series

 - intel/ifs: Clearwater Forest support

 - intel/vsec: Panther Lake support

 - p2sb: Do not hide the device if BIOS left it unhidden

 - touchscreen_dmi: Add SARY Tab 3 tablet information

* tag 'platform-drivers-x86-v6.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86/intel/vsec: Add support for Panther Lake
  platform/x86/intel/ifs: Add Clearwater Forest to CPU support list
  platform/x86: touchscreen_dmi: Add info for SARY Tab 3 tablet
  p2sb: Do not scan and remove the P2SB device when it is unhidden
  p2sb: Move P2SB hide and unhide code to p2sb_scan_and_cache()
  p2sb: Introduce the global flag p2sb_hidden_by_bios
  p2sb: Factor out p2sb_read_from_cache()
  alienware-wmi: Adds support to Alienware m16 R1 AMD
  alienware-wmi: Fix X Series and G Series quirks
platform/x86/intel/vsec: Add support for Panther Lake 2024-12-11T14:00:56+00:00 Xi Pardee xi.pardee@linux.intel.com 2024-12-10T21:26:41+00:00 83848e37f6ee80f60b04139fefdfa1bde4aaa826 Add Panther Lake PMT telemetry support. Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com> Link: https://lore.kernel.org/r/20241210212646.239211-1-xi.pardee@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
Add Panther Lake PMT telemetry support.

Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com>
Link: https://lore.kernel.org/r/20241210212646.239211-1-xi.pardee@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86/intel/ifs: Add Clearwater Forest to CPU support list 2024-12-11T14:00:36+00:00 Jithu Joseph jithu.joseph@intel.com 2024-12-10T20:31:52+00:00 6c0a473fc5f89dabbed0af605a09370b533aa856 Add Clearwater Forest (INTEL_ATOM_DARKMONT_X) to the x86 match table of Intel In Field Scan (IFS) driver, enabling IFS functionality on this processor. Signed-off-by: Jithu Joseph <jithu.joseph@intel.com> Link: https://lore.kernel.org/r/20241210203152.1136463-1-jithu.joseph@intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
Add Clearwater Forest (INTEL_ATOM_DARKMONT_X) to the x86 match table of
Intel In Field Scan (IFS) driver, enabling IFS functionality on this
processor.

Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Link: https://lore.kernel.org/r/20241210203152.1136463-1-jithu.joseph@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: touchscreen_dmi: Add info for SARY Tab 3 tablet 2024-12-11T13:58:35+00:00 Huy Minh buingoc67@gmail.com 2024-12-10T15:45:00+00:00 220326c4650a0ef7db3bfcae903f758555ecb973 There's no info about the OEM behind the tablet, only online stores listing. This tablet uses an Intel Atom x5-Z8300, 4GB of RAM & 64GB of storage. Signed-off-by: Huy Minh <buingoc67@gmail.com> Link: https://lore.kernel.org/r/20241210154500.32124-1-buingoc67@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
There's no info about the OEM behind the tablet, only online stores
listing. This tablet uses an Intel Atom x5-Z8300, 4GB of RAM & 64GB
of storage.

Signed-off-by: Huy Minh <buingoc67@gmail.com>
Link: https://lore.kernel.org/r/20241210154500.32124-1-buingoc67@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
p2sb: Do not scan and remove the P2SB device when it is unhidden 2024-12-10T14:24:51+00:00 Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com 2024-11-28T00:28:36+00:00 360c400d0f568636c1b98d1d5f9f49aa3d420c70 When drivers access P2SB device resources, it calls p2sb_bar(). Before the commit 5913320eb0b3 ("platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe"), p2sb_bar() obtained the resources and then called pci_stop_and_remove_bus_device() for clean up. Then the P2SB device disappeared. The commit 5913320eb0b3 introduced the P2SB device resource cache feature in the boot process. During the resource cache, pci_stop_and_remove_bus_device() is called for the P2SB device, then the P2SB device disappears regardless of whether p2sb_bar() is called or not. Such P2SB device disappearance caused a confusion [1]. To avoid the confusion, avoid the pci_stop_and_remove_bus_device() call when the BIOS does not hide the P2SB device. For that purpose, cache the P2SB device resources only if the BIOS hides the P2SB device. Call p2sb_scan_and_cache() only if p2sb_hidden_by_bios is true. This allows removing two branches from p2sb_scan_and_cache(). When p2sb_bar() is called, get the resources from the cache if the P2SB device is hidden. Otherwise, read the resources from the unhidden P2SB device. Reported-by: Daniel Walker (danielwa) <danielwa@cisco.com> Closes: https://lore.kernel.org/lkml/ZzTI+biIUTvFT6NC@goliath/ [1] Fixes: 5913320eb0b3 ("platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe") Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20241128002836.373745-5-shinichiro.kawasaki@wdc.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
When drivers access P2SB device resources, it calls p2sb_bar(). Before
the commit 5913320eb0b3 ("platform/x86: p2sb: Allow p2sb_bar() calls
during PCI device probe"), p2sb_bar() obtained the resources and then
called pci_stop_and_remove_bus_device() for clean up. Then the P2SB
device disappeared. The commit 5913320eb0b3 introduced the P2SB device
resource cache feature in the boot process. During the resource cache,
pci_stop_and_remove_bus_device() is called for the P2SB device, then the
P2SB device disappears regardless of whether p2sb_bar() is called or
not. Such P2SB device disappearance caused a confusion [1]. To avoid the
confusion, avoid the pci_stop_and_remove_bus_device() call when the BIOS
does not hide the P2SB device.

For that purpose, cache the P2SB device resources only if the BIOS hides
the P2SB device. Call p2sb_scan_and_cache() only if p2sb_hidden_by_bios
is true. This allows removing two branches from p2sb_scan_and_cache().
When p2sb_bar() is called, get the resources from the cache if the P2SB
device is hidden. Otherwise, read the resources from the unhidden P2SB
device.

Reported-by: Daniel Walker (danielwa) <danielwa@cisco.com>
Closes: https://lore.kernel.org/lkml/ZzTI+biIUTvFT6NC@goliath/ [1]
Fixes: 5913320eb0b3 ("platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe")
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20241128002836.373745-5-shinichiro.kawasaki@wdc.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
p2sb: Move P2SB hide and unhide code to p2sb_scan_and_cache() 2024-12-10T14:24:49+00:00 Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com 2024-11-28T00:28:35+00:00 0286070c74ee48391fc07f7f617460479472d221 To prepare for the following fix, move the code to hide and unhide the P2SB device from p2sb_cache_resources() to p2sb_scan_and_cache(). Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20241128002836.373745-4-shinichiro.kawasaki@wdc.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
To prepare for the following fix, move the code to hide and unhide the
P2SB device from p2sb_cache_resources() to p2sb_scan_and_cache().

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20241128002836.373745-4-shinichiro.kawasaki@wdc.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
p2sb: Introduce the global flag p2sb_hidden_by_bios 2024-12-10T14:24:48+00:00 Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com 2024-11-28T00:28:34+00:00 ae3e6ebc5ab046d434c05c58a3e3f7e94441fec2 To prepare for the following fix, introduce the global flag p2sb_hidden_by_bios. Check if the BIOS hides the P2SB device and store the result in the flag. This allows to refer to the check result across functions. Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20241128002836.373745-3-shinichiro.kawasaki@wdc.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
To prepare for the following fix, introduce the global flag
p2sb_hidden_by_bios. Check if the BIOS hides the P2SB device and store
the result in the flag. This allows to refer to the check result across
functions.

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20241128002836.373745-3-shinichiro.kawasaki@wdc.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
p2sb: Factor out p2sb_read_from_cache() 2024-12-10T14:24:45+00:00 Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com 2024-11-28T00:28:33+00:00 9244524d60ddea55f4df54c51200e8fef2032447 To prepare for the following fix, factor out the code to read the P2SB resource from the cache to the new function p2sb_read_from_cache(). Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20241128002836.373745-2-shinichiro.kawasaki@wdc.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
To prepare for the following fix, factor out the code to read the P2SB
resource from the cache to the new function p2sb_read_from_cache().

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20241128002836.373745-2-shinichiro.kawasaki@wdc.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>