TISCI protocol supports for enabling the device either with exclusive
permissions for the requesting host or with sharing across the hosts.
There are certain devices which are exclusive to Linux context and
there are certain devices that are shared across different host contexts.
So add support for getting this information from DT by increasing
the power-domain cells to 2.

For keeping the DT backward compatibility intact, defaulting the
device permissions to set the exclusive flag set. In this case the
power-domain-cells is 1.
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

TISCI protocol supports for enabling the device either with exclusive
permissions for the requesting host or with sharing across the hosts.
There are certain devices which are exclusive to Linux context and
there are certain devices that are shared across different host contexts.
So add support for getting this information from DT by increasing
the power-domain cells to 2.
Acked-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Sysfw provides an option for requesting exclusive access for a
device using the flags MSG_FLAG_DEVICE_EXCLUSIVE. If this flag is
not used, the device is meant to be shared across hosts. Once a device
is requested from a host with this flag set, any request to this
device from a different host will be nacked by sysfw. Current tisci
driver enables this flag for every device requests. But this may not
be true for all the devices. So provide a separate commands in driver
for exclusive and shared device requests.
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The probe function is no longer __init, so anything it calls now
must also be available at runtime, as Kbuild points out when building
with clang-9:

WARNING: vmlinux.o(.text+0x6e7040): Section mismatch in reference from the function weim_probe() to the function .init.text:imx_weim_gpr_setup()
The function weim_probe() references
the function __init imx_weim_gpr_setup().
This is often because weim_probe lacks a __init
annotation or the annotation of imx_weim_gpr_setup is wrong.

WARNING: vmlinux.o(.text+0x6e70f0): Section mismatch in reference from the function weim_probe() to the function .init.text:weim_timing_setup()
The function weim_probe() references
the function __init weim_timing_setup().
This is often because weim_probe lacks a __init
annotation or the annotation of weim_timing_setup is wrong.

Remove the remaining __init markings that are now wrong.

Fixes: 4a92f078 ("bus: imx-weim: use module_platform_driver()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The ARM w90x900 platform is getting removed, so this driver is obsolete.

Link: https://lore.kernel.org/r/20190809202749.742267-10-arnd@arndb.deSigned-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The ARM w90x900 platform is getting removed, so this driver is obsolete.

Link: https://lore.kernel.org/r/20190809202749.742267-8-arnd@arndb.deSigned-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The ARM w90x900 platform is getting removed, so this driver is obsolete.

Link: https://lore.kernel.org/r/20190809202749.742267-14-arnd@arndb.deSigned-off-by: Arnd Bergmann <arnd@arndb.de>

The platform is getting removed, so there are no remaining
users of this driver.

Link: https://lore.kernel.org/r/20190809202749.742267-6-arnd@arndb.deSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Add sysfs ABI documentation for the sysfs files created by the
turris-mox-rwtm driver.

Link: https://lore.kernel.org/r/20190822014318.19478-4-marek.behun@nic.czSigned-off-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

This adds a driver to communicate with the firmware running on the
secure processor of the Turris Mox router, enabling the kernel to
retrieve true random numbers from the Entropy Bit Generator and to read
some information burned into eFuses when device was manufactured:

and to
sign messages with the ECDSA private key burned into each Turris Mox
device when manufacturing.

This also adds support to read other information burned into eFuses:
 - serial number
 - board version
 - MAC addresses
 - RAM size
 - ECDSA public key (this is not read directly from eFuses, rather it
   is computed by the firmware as pair to the burned private key)

The source code of the firmware is open source and can be found at
https://gitlab.labs.nic.cz/turris/mox-boot-builder/tree/master/wtmi

The firmware is also able to, on demand, sign messages with the burned
ECDSA private key, but since Linux's akcipher API is not yet stable
(and therefore not exposed to userspace via netlink), this functionality
is not supported yet.

Link: https://lore.kernel.org/r/20190822014318.19478-3-marek.behun@nic.czSigned-off-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

This adds device tree binding documentation for the driver communicating
with the rWTM firmware on Turris Mox.

Link: https://lore.kernel.org/r/20190822014318.19478-2-marek.behun@nic.czSigned-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Currently the size_t variable res is being checked for
an error failure however the unsigned variable is never
less than zero so this test is always false. Fix this by
making variable res ssize_t

Link: https://lore.kernel.org/r/20190822010351.15660-2-marek.behun@nic.cz
Addresses-Coverity: ("Unsigned compared against 0")
Fixes: 5bc7f990 ("bus: Add support for Moxtet bus")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/bus/moxtet.c: In function moxtet_remove:
drivers/bus/moxtet.c:822:6: warning: variable dummy set but not used
[-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20190822010351.15660-3-marek.behun@nic.czSigned-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'davinci-for-v5.4/fbdev' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into arm/drivers

This converts the da8xx fbdev driver to use GPIO backlight device
and regulator devices. This will finally help get rid of legacy
GPIO API calls and simplify DaVinci GPIO driver.

* tag 'davinci-for-v5.4/fbdev' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  fbdev: da8xx: use resource management for dma
  fbdev: da8xx-fb: drop a redundant if
  fbdev: da8xx-fb: use devm_platform_ioremap_resource()
  fbdev: da8xx: remove panel_power_ctrl() callback from platform data
  ARM: davinci: da850-evm: switch to using a fixed regulator for lcdc
  fbdev: da8xx: add support for a regulator
  ARM: davinci: da850-evm: model the backlight GPIO as an actual device
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'imx-drivers-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers update for 5.4:
 - A series from Anson Huang to add UID support for i.MX8 SoC and SCU
   drivers.
 - A series from Daniel Baluta to add DSP IPC driver for communication
   between host AP (Linux) and the firmware running on DSP embedded in
   i.MX8 SoCs.
 - A small fix for GPCv2 error code printing.
 - Switch from module_platform_driver_probe() to module_platform_driver()
   for imx-weim driver, as we need the driver to probe again when device
   is present later.
 - Add optional burst clock mode support for imx-weim driver.

* tag 'imx-drivers-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: gpcv2: Print the correct error code
  bus: imx-weim: use module_platform_driver()
  firmware: imx: Add DSP IPC protocol interface
  soc: imx-scu: Add SoC UID(unique identifier) support
  bus: imx-weim: optionally enable burst clock mode
  firmware: imx: scu-pd: Add IRQSTR_DSP PD range
  firmware: imx: scu-pd: Add mu13 b side PD range
  firmware: imx: scu-pd: Rename mu PD range to mu_a
  soc: imx8: Add i.MX8MM UID(unique identifier) support
  soc: imx8: Add i.MX8MQ UID(unique identifier) support

Link: https://lore.kernel.org/r/20190825153237.28829-1-shawnguo@kernel.orgSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'amlogic-drivers-2.1' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into arm/drivers

soc: amlogic: updates for v5.4 (round 2)
- add power domain controller

* tag 'amlogic-drivers-2.1' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  dt-bindings: power: add Amlogic Everything-Else power domains bindings
  soc: amlogic: Add support for Everything-Else power domains controller

Link: https://patchwork.kernel.org/patch/11122205/Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'v5.3-next-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into arm/drivers

cmdq helper:
reoder function parameter and change size of the parameters

* tag 'v5.3-next-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux:
  soc: mediatek: cmdq: change the type of input parameter
  soc: mediatek: cmdq: reorder the parameter

Link: https://lore.kernel.org/r/8c860e37-3816-d75f-fc37-ce496905ba73@gmail.comSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'sunxi-drivers-for-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/drivers

Allwinner drivers patches for 5.4

One driver to remove a redundant error message in the Allwinner RSB
driver.

* tag 'sunxi-drivers-for-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  bus: sunxi-rsb: Remove dev_err() usage after platform_get_irq()

Link: https://lore.kernel.org/r/f9edfc8e-19b7-4b6e-897a-35f3bdcc8643.lettre@localhostSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'amlogic-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into arm/drivers

soc: amlogic: driver updates for v5.4

Highlights
- clk-measure: support new S905X3 and A311D SoCs
- socinfo: support new S905X3 and A311D SoCs

* tag 'amlogic-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  soc: amlogic: meson-gx-socinfo: Add of_node_put() before return
  soc: amlogic: clk-measure: Add support for SM1
  dt-bindings: soc: amlogic: clk-measure: Add SM1 compatible
  soc: amlogic: meson-gx-socinfo: Add SM1 and S905X3 IDs
  soc: amlogic: meson-gx-socinfo: add A311D id
  soc: amlogic: meson-clk-measure: add G12B second cluster cpu clk
  soc: amlogic: meson-clk-measure: protect measure with a mutex

Link: https://lore.kernel.org/r/7h7e77cwv5.fsf@baylibre.comSigned-off-by: Arnd Bergmann <arnd@arndb.de>

This is a GPIO driver so it should include
<linux/gpio/driver.h> not <linux/gpio.h>

Link: https://lore.kernel.org/r/20190820103429.7028-1-linus.walleij@linaro.org
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'soc-fsl-next-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux into arm/drivers

NXP/FSL SoC driver updates for v5.4

DPAA2 DPIO/MC driver
- Remove explicit device_link_remove() and device_link_del() calls due to
framework change

DPAA QBman driver
- Various changes to make it working with kexec
- Remove dev_err() usage after platform_get_irq()

GUTS driver
- Add LS1028 SoC support

* tag 'soc-fsl-next-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
  bus: fsl-mc: remove explicit device_link_del
  soc: fsl: dpio: remove explicit device_link_remove
  soc: fsl: guts: Add definition for LS1028A
  soc/fsl/qbman: Update device tree with reserved memory
  soc/fsl/qbman: Fixup qman_shutdown_fq()
  soc/fsl/qbman: Disable interrupts during portal recovery
  soc/fsl/qbman: Fix drain_mr_fqni()
  soc/fsl/qbman: Cleanup QMan queues if device was already initialized
  soc/fsl/qbman: Cleanup buffer pools if BMan was initialized prior to bootup
  soc/fsl/qbman: Rework QBMan private memory setup
  soc: fsl: qbman: Remove dev_err() usage after platform_get_irq()

Link: https://lore.kernel.org/r/20190816195301.26660-1-leoyang.li@nxp.comSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'renesas-drivers-for-v5.4-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/drivers

Renesas driver updates for v5.4 (take two)

  - Improve "always-on" PM Domain handling on SH/R-Mobile SoCs,
  - Automatic errata selection for Cortex-A7/A9,
  - Small fixes and improvements.

* tag 'renesas-drivers-for-v5.4-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  soc: renesas: Enable ARM_ERRATA_754322 for affected Cortex-A9
  soc: renesas: Enable ARM_ERRATA_814220 for affected Cortex-A7
  soc: renesas: rmobile-sysc: Set GENPD_FLAG_ALWAYS_ON for always-on domain
  soc: renesas: rcar-sysc: Eliminate local variable gov
  soc: renesas: rcar-sysc: Add goto to of_node_put() before return

Link: https://lore.kernel.org/r/20190823123643.18799-5-geert+renesas@glider.beSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'samsung-drivers-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/drivers

Samsung soc drivers changes for v5.4

Add Exynos Chipid driver for identification of product IDs and SoC
revisions.  The driver also exposes chipid regmap, later to be used by
Exynos Adaptive Supply Voltage driver (adjusting voltages to different
revisions of same SoC).

* tag 'samsung-drivers-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  soc: samsung: chipid: Convert exynos-chipid driver to use the regmap API
  soc: samsung: Add exynos chipid driver support

Link: https://lore.kernel.org/r/20190816163042.6604-1-krzk@kernel.orgSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Add the bindings for the Amlogic Everything-Else power domains,
controlling the Everything-Else peripherals power domains.

The bindings targets the Amlogic G12A and SM1 compatible SoCs,
support for earlier SoCs will be added later.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Add support for the General Purpose Amlogic Everything-Else Power controller,
with the first support for G12A and SM1 SoCs dedicated to the VPU, PCIe,
USB, NNA, GE2D and Ethernet Power Domains.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Use managed variants of dma alloc functions in the da8xx fbdev driver.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

The driver data is always set in probe. The remove() callback won't be
called if probe failed which is the only way for it to be NULL. Remove
the redundant if.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

Shrink the code a bit by using the new helper wrapping the calls to
platform_get_resource() and devm_ioremap_resource() together.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

There are no more users of panel_power_ctrl(). Remove it from the
driver.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

Now that the da8xx fbdev driver supports power control with an actual
regulator, switch to using a fixed power supply for da850-evm.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

We want to remove the hacky platform data callback for power control.
Add a regulator to the driver data and enable/disable it next to
the current panel_power_ctrl() calls. We will use it in subsequent
patch on da850-evm.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

Instead of enabling the panel backlight in a callback defined in board
file using deprecated legacy GPIO API calls, model the line as a GPIO
backlight device.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

The current code prints 'ret' (thus 0) while it should use 'err'.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

According to the cmdq hardware design, the subsys is u8,
the offset is u16 and the event id is u16.
This patch changes the type of subsys, offset and event id
to the correct type.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

The order of gce instructions is [subsys offset value]
so reorder the parameter of cmdq_pkt_write_mask
and cmdq_pkt_write function.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

ARM Erratum 754322 affects Cortex-A9 revisions r2p* and r3p*.

Automatically enable support code to mitigate the erratum when compiling
a kernel for any of the affected Renesas SoCs:
  - RZ/A1: r3p0,
  - R-Mobile A1: r2p4,
  - R-Car M1A: r2p2-00rel0,
  - R-Car H1: r3p0,
  - SH-Mobile AG5: r2p2.

EMMA Mobile EV2 (r1p3) and RZ/A2 (r4p1) are not affected.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>

ARM Erratum 814220 affects Cortex-A7 revisions r0p2-r0p5.

Automatically enable support code to mitigate the erratum when compiling
a kernel for any of the affected Renesas SoCs:
  - R-Mobile APE6: r0p2,
  - RZ/G1E: r0p5,
  - RZ/G1C: r0p5,
  - R-Car H2: r0p3,
  - R-Car E2: r0p5,
  - RZ/N1: r0p5.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>

Currently the R-Mobile "always-on" PM Domain is implemented by returning
-EBUSY from the generic_pm_domain.power_off() callback, and doing
nothing in the generic_pm_domain.power_on() callback.  However, this
means the PM Domain core code is not aware of the semantics of this
special domain, leading to boot warnings like the following on
SH/R-Mobile SoCs:

    sh_cmt e6130000.timer: PM domain c5 will not be powered off

Fix this by making the always-on nature of the domain explicit instead,
by setting the GENPD_FLAG_ALWAYS_ON flag.  This removes the need for the
domain to provide power control callbacks.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>

The variable np in function meson_gx_socinfo_init takes the return value
of of_find_compatible_node, which gets a node but does not put it. If
this node is not put it may cause a memory leak. Hence put np after its
usefulness has been exhausted.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Fixes: a9daaba2 ("soc: Add Amlogic SoC Information driver")
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Add the clk-measurer clocks IDs for the Amlogic SM1 SoC family.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>