Merge changes regarding the management of ACPI device objects for
6.1-rc1:
- Rename ACPI device object reference counting functions (Rafael
Wysocki).
- Rearrange ACPI device object initialization code (Rafael Wysocki).
- Drop parent field from struct acpi_device (Rafael Wysocki).
- Extend the the int3472-tps68470 driver to support multiple consumers
of a single TPS68470 along with the requisite framework-level
support (Daniel Scally).
* acpi-dev:
platform/x86: int3472: Add board data for Surface Go2 IR camera
platform/x86: int3472: Support multiple gpio lookups in board data
platform/x86: int3472: Support multiple clock consumers
ACPI: bus: Add iterator for dependent devices
ACPI: scan: Add acpi_dev_get_next_consumer_dev()
ACPI: property: Use acpi_dev_parent()
ACPI: Drop redundant acpi_dev_parent() header
ACPI: PM: Fix NULL argument handling in acpi_device_get/set_power()
ACPI: Drop parent field from struct acpi_device
ACPI: scan: Eliminate __acpi_device_add()
ACPI: scan: Rearrange initialization of ACPI device objects
ACPI: scan: Rename acpi_bus_get_parent() and rearrange it
ACPI: Rename acpi_bus_get/put_acpi_device()
At present, the tps68470.c only supports a single clock consumer when
passing platform data to the clock driver. In some devices multiple
sensors depend on the clock provided by a single TPS68470 and so all
need to be able to acquire the clock. Support passing multiple
consumers as platform data.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull fbdev updates from Helge Deller:
"The two major changes in this patchset corrects VGA modes, color
handling and various other smaller fixes in the Atari framebuffer (by
Geert Uytterhoeven), and devm_* conversion, platform data fixes and
header cleanups in the imxfb driver (by Uwe Kleine-König).
Other small patches clean up code in sa1100fb, cirrusfb and omapfb,
fix a refcount leak in amba-clcd (by Liang He), and adds parameter
checks to arkfb, i740fb, vt8623fb and s3fb (by Zheyu Ma)"
* tag 'for-5.20/fbdev-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (27 commits)
video: fbdev: s3fb: Check the size of screen before memset_io()
video: fbdev: arkfb: Check the size of screen before memset_io()
video: fbdev: vt8623fb: Check the size of screen before memset_io()
video: fbdev: i740fb: Check the argument of i740_calc_vclk()
video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()
video: fbdev: imxfb: fix return value check in imxfb_probe()
video: fbdev: sis: fix typos in SiS_GetModeID()
video: fbdev: imxfb: Convert request_mem_region + ioremap to devm_ioremap_resource
video: fbdev: imxfb: Fold <linux/platform_data/video-imxfb.h> into only user
video: fbdev: imxfb: Drop unused symbols from header
video: fbdev: imxfb: Drop platform data support
video: fbdev: amba-clcd: Fix refcount leak bugs
video: fbdev: omapfb: Unexport omap*_update_window_async()
video: fbdev: atari: Remove backward bug-compatibility
video: fbdev: atari: Remove unused definitions and variables
video: fbdev: atari: Fix VGA modes
video: fbdev: atari: Fix TT High video mode vertical refresh
video: fbdev: atari: Remove unneeded casts to void *
video: fbdev: atari: Remove unneeded casts from void *
video: fbdev: atari: Fix ext_setcolreg()
...
Pull x86 platform driver updates from Hans de Goede:
- Microsoft Surface:
- SSAM hot unplug support
- Surface Pro 8 keyboard cover support
- Tablet mode switch support for Surface Pro 8 and Surface Laptop
Studio
- thinkpad_acpi:
- AMD Automatice Mode Transitions (AMT) support
- Mellanox:
- Vulcan chassis COMe NVSwitch management support
- XH3000 support
- New generic/shared Intel P2SB (Primary to Sideband) support
- Lots of small cleanups
- Various small bugfixes
- Various new hardware ids / quirks additions
* tag 'platform-drivers-x86-v6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (105 commits)
platform/x86/intel/vsec: Fix wrong type for local status variables
platform/x86: p2sb: Move out of X86_PLATFORM_DEVICES dependency
platform/x86: pmc_atom: Fix comment typo
platform/surface: gpe: Add support for 13" Intel version of Surface Laptop 4
platform/olpc: Fix uninitialized data in debugfs write
platform/mellanox: mlxreg-lc: Fix error flow and extend verbosity
platform/x86: pmc_atom: Match all Lex BayTrail boards with critclk_systems DMI table
platform/x86: sony-laptop: Remove useless comparisons in sony_pic_read_possible_resource()
tools/power/x86/intel-speed-select: Remove unneeded semicolon
tools/power/x86/intel-speed-select: Fix off by one check
platform/surface: tabletsw: Fix __le32 integer access
Documentation/ABI: Add new attributes for mlxreg-io sysfs interfaces
Documentation/ABI: mlxreg-io: Fix contact info
platform/mellanox: mlxreg-io: Add locking for io operations
platform/x86: mlx-platform: Add COME board revision register
platform/x86: mlx-platform: Add support for new system XH3000
platform/x86: mlx-platform: Introduce support for COMe NVSwitch management module for Vulcan chassis
platform/x86: mlx-platform: Add support for systems equipped with two ASICs
platform/x86: mlx-platform: Add cosmetic changes for alignment
platform/x86: mlx-platform: Make activation of some drivers conditional
...
Pull chrome platform updates from Tzung-Bi Shih:
"cros_ec_proto:
- Leverage Kunit and add Kunit test cases
- Clean-ups
- Fix typo
cros_ec_commands:
- Fix typo
- Fix compile errors
cros_kbd_led_backlight:
- Support OF match
- Support EC PWM backend
cros_ec:
- Always expose the last resume result to fix sleep hang detection on
ARM-based chromebooks
wilco_ec:
- Fix typo
cros_ec_typec:
- Clean-ups
- Use Type-C framework utilities to manage altmode structs"
* tag 'tag-chrome-platform-for-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (59 commits)
platform/chrome: cros_kunit_util: add default value for `msg->result`
platform/chrome: merge Kunit utils and test cases
platform/chrome: cros_kbd_led_backlight: fix build warning
platform/chrome: cros_ec_proto: add Kunit test for cros_ec_cmd()
platform/chrome: cros_ec_proto: add Kunit tests for get_sensor_count
platform/chrome: cros_ec_proto: add Kunit tests for check_features
platform/chrome: cros_ec_proto: add Kunit tests for get_host_event
platform/chrome: cros_ec_proto: add Kunit tests for get_next_event
platform/chrome: cros_ec_proto: add Kunit test for cros_ec_map_error()
platform/chrome: cros_ec_proto: add Kunit tests for cmd_xfer_status
platform/chrome: cros_ec_proto: return -EPROTO if empty payload
platform/chrome: cros_ec_proto: add Kunit test for empty payload
platform/chrome: cros_ec_proto: return -EAGAIN when retries timed out
platform/chrome: cros_ec_proto: change Kunit expectation when timed out
platform/chrome: cros_ec_proto: separate cros_ec_wait_until_complete()
platform/chrome: cros_ec_proto: separate cros_ec_xfer_command()
platform/chrome: cros_ec_proto: add Kunit tests for cros_ec_send_command()
platform/chrome: cros_ec_proto: add Kunit tests for cros_ec_cmd_xfer()
platform/chrome: cros_ec_proto: add "cros_ec_" prefix to send_command()
platform/chrome: cros_ec_typec: Register port altmodes
...
No source file but the driver itself includes the header containing the
platform data definition. The last user is gone since commit
8485adf17a ("ARM: imx: Remove imx device directory").
Move the remaining symbols directly into the driver and remove the then
unused header file.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>
The only file that includes <linux/platform_data/video-imxfb.h> is the
imxfb driver. Drop all symbols that are unused there.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>
No source file but the driver itself includes the header containing the
platform data definition. The last user is gone since commit
8485adf17a ("ARM: imx: Remove imx device directory").
So we can safely drop platform data support.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>
In some new ASUS devices, hotkey Fn+F13 is used for mic mute. If mic-mute
LED is present by checking WMI ASUS_WMI_DEVID_MICMUTE_LED, we will add a
mic-mute LED classdev, asus::micmute, in the asus-wmi driver to control
it. The binding of mic-mute LED controls will be swithched with LED
trigger.
Signed-off-by: PaddyKP_Yao <PaddyKP_Yao@asus.com>
Link: https://lore.kernel.org/r/20220711115125.2072508-1-PaddyKP_Yao@asus.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
SoC features such as GPIO are accessed via a reserved MMIO area,
we don't know its address but can obtain it from the BAR of
the P2SB device, that device is normally hidden so we have to
temporarily unhide it, read address and hide it back.
There are already a few users and at least one more is coming which
require an access to Primary to Sideband (P2SB) bridge in order
to get IO or MMIO BAR hidden by BIOS.
Create a library to access P2SB for x86 devices in a unified way.
Background information
======================
Note, the term "bridge" is used in the documentation and it has nothing
to do with a PCI (host) bridge as per the PCI specifications.
The P2SB is an interesting device by its nature and hardware design.
First of all, it has several devices in the hardware behind it. These
devices may or may not be represented as ACPI devices by a firmware.
It also has a hardwired (to 0s) the least significant bits of the
base address register which is represented by the only 64-bit BAR0.
It means that OS mustn't reallocate the BAR.
On top of that in some cases P2SB is represented by function 0 on PCI
slot (in terms of B:D.F) and according to the PCI specification any
other function can't be seen until function 0 is present and visible.
In the PCI configuration space of P2SB device the full 32-bit register
is allocated for the only purpose of hiding the entire P2SB device. As
per [3]:
3.1.39 P2SB Control (P2SBC)—Offset E0h
Hide Device (HIDE): When this bit is set, the P2SB will return 1s on
any PCI Configuration Read on IOSF-P. All other transactions including
PCI Configuration Writes on IOSF-P are unaffected by this. This does
not affect reads performed on the IOSF-SB interface.
This doesn't prevent MMIO accesses, although preventing the OS from
assigning these addresses. The firmware on the affected platforms marks
the region as unusable (by cutting it off from the PCI host bridge
resources) as depicted in the Apollo Lake example below:
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io 0x0070-0x0077]
pci_bus 0000:00: root bus resource [io 0x0000-0x006f window]
pci_bus 0000:00: root bus resource [io 0x0078-0x0cf7 window]
pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
pci_bus 0000:00: root bus resource [mem 0x7c000001-0x7fffffff window]
pci_bus 0000:00: root bus resource [mem 0x7b800001-0x7bffffff window]
pci_bus 0000:00: root bus resource [mem 0x80000000-0xcfffffff window]
pci_bus 0000:00: root bus resource [mem 0xe0000000-0xefffffff window]
pci_bus 0000:00: root bus resource [bus 00-ff]
The P2SB 16MB BAR is located at 0xd0000000-0xd0ffffff memory window.
The generic solution
====================
The generic solution for all cases when we need to access to the information
behind P2SB device is a library code where users ask for necessary resources
by demand and hence those users take care of not being run on the systems
where this access is not required.
The library provides the p2sb_bar() API to retrieve the MMIO of the BAR0 of
the device from P2SB device slot.
P2SB unconditional unhiding awareness
=====================================
Technically it's possible to unhide the P2SB device and devices on
the same PCI slot and access them at any time as needed. But there are
several potential issues with that:
- the systems were never tested against such configuration and hence
nobody knows what kind of bugs it may bring, especially when we talk
about SPI NOR case which contains Intel FirmWare Image (IFWI) code
(including BIOS) and already known to be problematic in the past for
end users
- the PCI by its nature is a hotpluggable bus and in case somebody
attaches a driver to the functions of a P2SB slot device(s) the
end user experience and system behaviour can be unpredictable
- the kernel code would need some ugly hacks (or code looking as an
ugly hack) under arch/x86/pci in order to enable these devices on
only selected platforms (which may include CPU ID table followed by
a potentially growing number of DMI strings
The future improvements
=======================
The future improvements with this code may go in order to gain some kind
of cache, if it's possible at all, to prevent unhiding and hiding many
times to take static information that may be saved once per boot.
Links
=====
[1]: https://lab.whitequark.org/notes/2017-11-08/accessing-intel-ich-pch-gpios/
[2]: https://cdrdv2.intel.com/v1/dl/getContent/332690?wapkw=332690
[3]: https://cdrdv2.intel.com/v1/dl/getContent/332691?wapkw=332691
[4]: https://medium.com/@jacksonchen_43335/bios-gpio-p2sb-70e9b829b403
Signed-off-by: Jonathan Yong <jonathan.yong@intel.com>
Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Based on the normalized pattern:
this software is distributed under the terms of the gnu general public
license ( gpl ) version 2 as published by the free software foundation
this software is provided by the copyright holders and contributors as
is and any express or implied warranties including but not limited to
the implied warranties of merchantability and fitness for a particular
purpose are disclaimed in no event shall the copyright owner or
contributors be liable for any direct indirect incidental special
exemplary or consequential damages (including but not limited to
procurement of substitute goods or services loss of use data or
profits or business interruption) however caused and on any theory of
liability whether in contract strict liability or tort (including
negligence or otherwise) arising in any way out of the use of this
software even if advised of the possibility of such damage
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on the normalized pattern:
this program is free software you can redistribute it and/or modify it
under the terms of the gnu general public license as published by the
free software foundation version 2 this program is distributed as is
without any warranty of any kind whether express or implied without
even the implied warranty of merchantability or fitness for a
particular purpose see the gnu general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull clockevent/clocksource updates from Thomas Gleixner:
- Device tree bindings for MT8186
- Tell the kernel that the RISC-V SBI timer stops in deeper power
states
- Make device tree parsing in sp804 more robust
- Dead code removal and tiny fixes here and there
- Add the missing SPDX identifiers
* tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value
clocksource/drivers/timer-ti-dm: Remove unnecessary NULL check
clocksource/drivers/timer-sun5i: Convert to SPDX identifier
clocksource/drivers/timer-sun4i: Convert to SPDX identifier
clocksource/drivers/pistachio: Convert to SPDX identifier
clocksource/drivers/orion: Convert to SPDX identifier
clocksource/drivers/lpc32xx: Convert to SPDX identifier
clocksource/drivers/digicolor: Convert to SPDX identifier
clocksource/drivers/armada-370-xp: Convert to SPDX identifier
clocksource/drivers/mips-gic-timer: Convert to SPDX identifier
clocksource/drivers/jcore: Convert to SPDX identifier
clocksource/drivers/bcm_kona: Convert to SPDX identifier
clocksource/drivers/sp804: Avoid error on multiple instances
clocksource/drivers/riscv: Events are stopped during CPU suspend
clocksource/drivers/ixp4xx: Drop boardfile probe path
dt-bindings: timer: Add compatible for Mediatek MT8186
Pull more ARM multiplatform updates from Arnd Bergmann:
"The second part of the multiplatform changes now converts the
Intel/Marvell PXA platform along with the rest. The patches went
through several rebases before the merge window as bugs were found, so
they remained separate.
This has to touch a lot of drivers, in particular the touchscreen,
pcmcia, sound and clk bits, to detach the driver files from the
platform and board specific header files"
* tag 'arm-multiplatform-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (48 commits)
ARM: pxa/mmp: remove traces of plat-pxa
ARM: pxa: convert to multiplatform
ARM: pxa/sa1100: move I/O space to PCI_IOBASE
ARM: pxa: remove support for MTD_XIP
ARM: pxa: move mach/*.h to mach-pxa/
ARM: PXA: fix multi-cpu build of xsc3
ARM: pxa: move plat-pxa to drivers/soc/
ARM: mmp: rename pxa_register_device
ARM: mmp: remove tavorevb board support
ARM: pxa: remove unused mach/bitfield.h
ARM: pxa: move clk register definitions to driver
ARM: pxa: move smemc register access from clk to platform
cpufreq: pxa3: move clk register access to clk driver
ARM: pxa: remove get_clk_frequency_khz()
ARM: pxa: pcmcia: move smemc configuration back to arch
ASoC: pxa: i2s: use normal MMIO accessors
ASoC: pxa: ac97: use normal MMIO accessors
ASoC: pxa: use pdev resource for FIFO regs
Input: wm97xx - get rid of irq_enable method in wm97xx_mach_ops
Input: wm97xx - switch to using threaded IRQ
...
Rafael J. Wysocki
Daniel Scally
Andy Shevchenko
Linus Torvalds
Hans de Goede
Xin Gao
Uwe Kleine-König
Tinghan Shen
PaddyKP_Yao
Henning Schild
Jonathan Yong
Thomas Gleixner
Tzung-Bi Shih
Prashant Malani
Xiang wangx