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Commit Graph

93 Commits

Author SHA1 Message Date
Stephen Boyd
51c8b49762 clk: versatile: Depend on HAS_IOMEM
kbuild robot reports that s390 fails to build this driver with
COMPILE_TEST. Let's depend on HAS_IOMEM so that s390 doesn't try to
build it.

Cc: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 419b3ab698 ("clk: versatile: remove dependency on ARCH_*")
Link: https://lore.kernel.org/r/20210604192321.2594519-1-sboyd@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-04 12:23:28 -07:00
Peter Collingbourne
419b3ab698 clk: versatile: remove dependency on ARCH_*
It is now possible to build a modular kernel for vexpress by
not setting CONFIG_ARCH_VEXPRESS=y and instead setting =m on the
drivers that it normally implies. This is with the exception of
CLK_VEXPRESS_OSC which is currently hidden behind a dependency on
one of several ARCH_* variables. Remove that dependency so that
CLK_VEXPRESS_OSC may be enabled without it.

Signed-off-by: Peter Collingbourne <pcc@google.com>
Link: https://linux-review.googlesource.com/id/I435a21e2e5f6187db54f4ef2079b60028ab2ea69
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210520161702.3746174-1-lee.jones@linaro.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-01 18:18:17 -07:00
Lee Jones
0c1d46d3a7 clk: versatile: clk-icst: Fix worthy struct documentation block
Also demote non-worthy header to standard comment block.

Fixes the following W=1 kernel build warning(s):

 drivers/clk/versatile/clk-icst.c:53: warning: Function parameter or member 'map' not described in 'clk_icst'
 drivers/clk/versatile/clk-icst.c:53: warning: Function parameter or member 'vcoreg_off' not described in 'clk_icst'
 drivers/clk/versatile/clk-icst.c:53: warning: Function parameter or member 'lockreg_off' not described in 'clk_icst'
 drivers/clk/versatile/clk-icst.c:435: warning: cannot understand function prototype: 'const struct icst_params icst525_apcp_cm_params = '

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-clk@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210120093040.1719407-20-lee.jones@linaro.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-02-11 11:56:07 -08:00
Sumera Priyadarsini
da9c43dc0e clk: versatile: Add of_node_put() before return statement
Every iteration of for_each_available_child_of_node() decrements
the reference count of the previous node, however when control is
transferred from the middle of the loop, as in the case of a return
or break or goto, there is no decrement thus ultimately resulting in
a memory leak.

Fix a potential memory leak in clk-impd1.c by inserting
of_node_put() before a return statement.

Issue found with Coccinelle.

Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com>
Link: https://lore.kernel.org/r/20200829175704.GA10998@Kaladin
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-09-10 00:57:42 -07:00
Alexander A. Klimov
5f1d8970d4 Replace HTTP links with HTTPS ones: Common CLK framework
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
          If both the HTTP and HTTPS versions
          return 200 OK and serve the same content:
            Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Link: https://lore.kernel.org/r/20200703175114.15027-1-grandmaster@al2klimov.de
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-07-10 17:15:34 -07:00
Masahiro Yamada
a7f7f6248d treewide: replace '---help---' in Kconfig files with 'help'
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-14 01:57:21 +09:00
Linus Torvalds
6f630784cc This time around we have 4 lines of diff in the core framework, removing a
function that isn't used anymore. Otherwise the main new thing for the common
 clk framework is that it is selectable in the Kconfig language now. Hopefully
 this will let clk drivers and clk consumers be testable on more than the
 architectures that support the clk framework. The goal is to introduce some
 Kunit tests for the framework.
 
 Outside of the core framework we have the usual set of various driver updates
 and non-critical fixes. The dirstat shows that the new Baikal-T1 driver is the
 largest addition this time around in terms of lines of code. After that the x86
 (Intel), Qualcomm, and Mediatek drivers introduce many lines to support new or
 upcoming SoCs. After that the dirstat shows the usual suspects working on their
 SoC support by fixing minor bugs, correcting data and converting some of their
 DT bindings to YAML.
 
 Core:
  - Allow the COMMON_CLK config to be selectable
 
 New Drivers:
  - Clk driver for Baikal-T1 SoCs
  - Mediatek MT6765 clock support
  - Support for Intel Agilex clks
  - Add support for X1830 and X1000 Ingenic SoC clk controllers
  - Add support for the new Renesas RZ/G1H (R8A7742) SoC
  - Add support for Qualcomm's MSM8939 Generic Clock Controller
 
 Updates:
  - Support IDT VersaClock 5P49V5925
  - Bunch of updates for HSDK clock generation unit (CGU) driver
  - Start making audio and GPU clks work on Marvell MMP2/MMP3 SoCs
  - Add some GPU, NPU, and UFS clks to Qualcomm SM8150 driver
  - Enable supply regulators for GPU gdscs on Qualcomm SoCs
  - Add support for Si5342, Si5344 and Si5345 chips
  - Support custom flags in Xilinx zynq firmware
  - Various small fixes to the Xilinx clk driver
  - A single minor rounding fix for the legacy Allwinner clock support
  - A few patches from Abel Vesa as preparation of adding audiomix clock support
    on i.MX
  - A couple of cleanups from Anson Huang for i.MX clk-sscg-pll and clk-pllv3
    drivers
  - Drop dependency on ARM64 for i.MX8M clock driver, to support aarch32 mode on
    aarch64 hardware
  - A series from Peng Fan to improve i.MX8M clock drivers, using composite
    clock for core and bus clk slice
  - Set a better parent clock for flexcan on i.MX6UL to support CiA102 defined
    bit rates
  - A couple changes for EMC frequency scaling on Tegra210
  - Support for CPU frequency scaling on Tegra20/Tegra30
  - New clk gate for CSI test pattern generator on Tegra210
  - Regression fixes for Samsung exynos542x and exynos5433 SoCs
  - Use of fallthrough; attribute for Samsung s3c24xx
  - Updates and fixup HDMI and video clocks on Meson8b
  - Fixup reset polarity on Meson8b
  - Fix GPU glitch free mux switch on Meson gx and g12
  - A minor fix for the currently unused suspend/resume handling on Renesas RZ/A1 and RZ/A2
  - Two more conversions of Renesas DT bindings to json-schema
  - Add support for the USB 2.0 clock selector on Renesas R-Car M3-W+
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This time around we have four lines of diff in the core framework,
  removing a function that isn't used anymore. Otherwise the main new
  thing for the common clk framework is that it is selectable in the
  Kconfig language now. Hopefully this will let clk drivers and clk
  consumers be testable on more than the architectures that support the
  clk framework. The goal is to introduce some Kunit tests for the
  framework.

  Outside of the core framework we have the usual set of various driver
  updates and non-critical fixes. The dirstat shows that the new
  Baikal-T1 driver is the largest addition this time around in terms of
  lines of code. After that the x86 (Intel), Qualcomm, and Mediatek
  drivers introduce many lines to support new or upcoming SoCs. After
  that the dirstat shows the usual suspects working on their SoC support
  by fixing minor bugs, correcting data and converting some of their DT
  bindings to YAML.

  Core:
   - Allow the COMMON_CLK config to be selectable

  New Drivers:
   - Clk driver for Baikal-T1 SoCs
   - Mediatek MT6765 clock support
   - Support for Intel Agilex clks
   - Add support for X1830 and X1000 Ingenic SoC clk controllers
   - Add support for the new Renesas RZ/G1H (R8A7742) SoC
   - Add support for Qualcomm's MSM8939 Generic Clock Controller

  Updates:
   - Support IDT VersaClock 5P49V5925
   - Bunch of updates for HSDK clock generation unit (CGU) driver
   - Start making audio and GPU clks work on Marvell MMP2/MMP3 SoCs
   - Add some GPU, NPU, and UFS clks to Qualcomm SM8150 driver
   - Enable supply regulators for GPU gdscs on Qualcomm SoCs
   - Add support for Si5342, Si5344 and Si5345 chips
   - Support custom flags in Xilinx zynq firmware
   - Various small fixes to the Xilinx clk driver
   - A single minor rounding fix for the legacy Allwinner clock support
   - A few patches from Abel Vesa as preparation of adding audiomix
     clock support on i.MX
   - A couple of cleanups from Anson Huang for i.MX clk-sscg-pll and
     clk-pllv3 drivers
   - Drop dependency on ARM64 for i.MX8M clock driver, to support
     aarch32 mode on aarch64 hardware
   - A series from Peng Fan to improve i.MX8M clock drivers, using
     composite clock for core and bus clk slice
   - Set a better parent clock for flexcan on i.MX6UL to support CiA102
     defined bit rates
   - A couple changes for EMC frequency scaling on Tegra210
   - Support for CPU frequency scaling on Tegra20/Tegra30
   - New clk gate for CSI test pattern generator on Tegra210
   - Regression fixes for Samsung exynos542x and exynos5433 SoCs
   - Use of fallthrough; attribute for Samsung s3c24xx
   - Updates and fixup HDMI and video clocks on Meson8b
   - Fixup reset polarity on Meson8b
   - Fix GPU glitch free mux switch on Meson gx and g12
   - A minor fix for the currently unused suspend/resume handling on
     Renesas RZ/A1 and RZ/A2
   - Two more conversions of Renesas DT bindings to json-schema
   - Add support for the USB 2.0 clock selector on Renesas R-Car M3-W+"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (155 commits)
  clk: mediatek: Remove ifr{0,1}_cfg_regs structures
  clk: baikal-t1: remove redundant assignment to variable 'divider'
  clk: baikal-t1: fix spelling mistake "Uncompatible" -> "Incompatible"
  dt-bindings: clock: Add a missing include to MMP Audio Clock binding
  dt: Add bindings for IDT VersaClock 5P49V5925
  clk: vc5: Add support for IDT VersaClock 5P49V6965
  clk: Add Baikal-T1 CCU Dividers driver
  clk: Add Baikal-T1 CCU PLLs driver
  dt-bindings: clk: Add Baikal-T1 CCU Dividers binding
  dt-bindings: clk: Add Baikal-T1 CCU PLLs binding
  clk: mediatek: assign the initial value to clk_init_data of mtk_mux
  clk: mediatek: Add MT6765 clock support
  clk: mediatek: add mt6765 clock IDs
  dt-bindings: clock: mediatek: document clk bindings vcodecsys for Mediatek MT6765 SoC
  dt-bindings: clock: mediatek: document clk bindings mipi0a for Mediatek MT6765 SoC
  dt-bindings: clock: mediatek: document clk bindings for Mediatek MT6765 SoC
  CLK: HSDK: CGU: add support for 148.5MHz clock
  CLK: HSDK: CGU: support PLL bypassing
  CLK: HSDK: CGU: check if PLL is bypassed first
  clk: clk-si5341: Add support for the Si5345 series
  ...
2020-06-10 11:42:19 -07:00
Linus Torvalds
694b5a5d31 ARM: SoC changes for v5.8
One new platform gets added, the Realtek RTD1195, which is an older
 Cortex-a7 based relative of the RTD12xx chips that are already supported
 in arch/arm64. The platform may also be extended to support running
 32-bit kernels on those 64-bit chips for memory-constrained machines.
 
 In the Renesas shmobile platform, we gain support for "RZ/G1H" or R8A7742,
 an eight-core chip based on Cortex-A15 and Cortex-A7 cores, originally
 released in 2016 as one of the last high-end 32-bit designs.
 
 There is ongoing cleanup for the integrator, tegra, imx, and omap2
 platforms, with integrator getting very close to the goal of having
 zero code in arch/arm/, and omap2 moving more of the chip specifics
 from old board code into device tree files.
 
 The Versatile Express platform is made more modular, with built-in
 drivers now becoming loadable modules. This is part of a greater effort
 for the Android OS to have a common kernel binary for all platforms and
 any platform specific code in loadable modules.
 
 The PXA platform drops support for Compulab's pxa2xx boards that had
 rather unusual flash and PCI drivers but no known users remaining.
 All device drivers specific to those boards can now get removed as
 well.
 
 Across platforms, there is ongoing cleanup, with Geert and Rob
 revisiting some a lot of Kconfig options.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC updates from Arnd Bergmann:
 "One new platform gets added, the Realtek RTD1195, which is an older
  Cortex-a7 based relative of the RTD12xx chips that are already
  supported in arch/arm64. The platform may also be extended to support
  running 32-bit kernels on those 64-bit chips for memory-constrained
  machines.

  In the Renesas shmobile platform, we gain support for "RZ/G1H" or
  R8A7742, an eight-core chip based on Cortex-A15 and Cortex-A7 cores,
  originally released in 2016 as one of the last high-end 32-bit
  designs.

  There is ongoing cleanup for the integrator, tegra, imx, and omap2
  platforms, with integrator getting very close to the goal of having
  zero code in arch/arm/, and omap2 moving more of the chip specifics
  from old board code into device tree files.

  The Versatile Express platform is made more modular, with built-in
  drivers now becoming loadable modules. This is part of a greater
  effort for the Android OS to have a common kernel binary for all
  platforms and any platform specific code in loadable modules.

  The PXA platform drops support for Compulab's pxa2xx boards that had
  rather unusual flash and PCI drivers but no known users remaining. All
  device drivers specific to those boards can now get removed as well.

  Across platforms, there is ongoing cleanup, with Geert and Rob
  revisiting some a lot of Kconfig options"

* tag 'arm-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits)
  ARM: omap2: fix omap5_realtime_timer_init definition
  ARM: zynq: Don't select CONFIG_ICST
  ARM: OMAP2+: Fix regression for using local timer on non-SMP SoCs
  clk: versatile: Fix kconfig dependency on COMMON_CLK_VERSATILE
  ARM: davinci: fix build failure without I2C
  power: reset: vexpress: fix build issue
  power: vexpress: cleanup: use builtin_platform_driver
  power: vexpress: add suppress_bind_attrs to true
  Revert "ARM: vexpress: Don't select VEXPRESS_CONFIG"
  MAINTAINERS: pxa: remove Compulab arm/pxa support
  ARM: pxa: remove Compulab pxa2xx boards
  bus: arm-integrator-lm: Fix return value check in integrator_ap_lm_probe()
  soc: imx: move cpu code to drivers/soc/imx
  ARM: imx: move cpu definitions into a header
  ARM: imx: use device_initcall for imx_soc_device_init
  ARM: imx: pcm037: make pcm970_sja1000_platform_data static
  bus: ti-sysc: Timers no longer need legacy quirk handling
  ARM: OMAP2+: Drop old timer code for dmtimer and 32k counter
  ARM: dts: Configure system timers for omap2
  ARM: dts: Configure system timers for ti81xx
  ...
2020-06-04 19:47:11 -07:00
Rob Herring
e4df11cb99 ARM: zynq: Don't select CONFIG_ICST
CONFIG_ICST is for ARM Ltd reference platforms and isn't used by Zynq
platform, so remove selecting it. It appears to be a copy-n-paste error.

Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rob Herring <robh@kernel.org>
[arnd: remove the versatile clk driver change I added previously]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-05-29 09:36:03 +02:00
Rob Herring
5f55f1fb18 clk: versatile: Fix kconfig dependency on COMMON_CLK_VERSATILE
If COMPILE_TEST is enabled, then COMMON_CLK_VERSATILE can be disabled
when dependent options like ICST are selected resulting in kconfig
warnings:

WARNING: unmet direct dependencies detected for ICST
  Depends on [n]: COMMON_CLK [=y] && COMMON_CLK_VERSATILE [=n]
  Selected by [y]:
  - ARCH_REALVIEW [=y] && (ARCH_MULTI_V5 [=n] || ARCH_MULTI_V6 [=n] || ARCH_MULTI_V7 [=y])
  - ARCH_VEXPRESS [=y] && ARCH_MULTI_V7 [=y]
  - ARCH_ZYNQ [=y] && ARCH_MULTI_V7 [=y]

WARNING: unmet direct dependencies detected for CLK_SP810
  Depends on [n]: COMMON_CLK [=y] && COMMON_CLK_VERSATILE [=n]
  Selected by [y]:
  - ARCH_REALVIEW [=y] && (ARCH_MULTI_V5 [=n] || ARCH_MULTI_V6 [=n] || ARCH_MULTI_V7 [=y])

Fix this by dropping COMMON_CLK_VERSATILE and just using 'menu' instead
of 'menuconfig'.

[arnd: add ZYNQ to the dependency list]

Link: https://lore.kernel.org/r/20200527181307.2482167-1-robh@kernel.org
Fixes: 81134fb541 ("clk: versatile: Rework kconfig structure")
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-clk@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-05-28 13:20:26 +02:00
Colin Ian King
6f4d3c13b7 clk: versatile: remove redundant assignment to pointer clk
The pointer clk is being initialized with a value that is never read
and is being updated with a new value later on. The initialization
is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lkml.kernel.org/r/20200526224116.63549-1-colin.king@canonical.com
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-05-26 23:40:41 -07:00
Arnd Bergmann
a875e0e5a2 VExpress modularization
This series enables building various Versatile Express platform drivers
 as modules. The primary target is the Fast Model FVP which is supported
 in Android. As Android is moving towards their GKI, or generic kernel,
 the hardware support has to be in modules. Currently ARCH_VEXPRESS
 enables several built-in only drivers. Some of these are needed, but
 some are only needed for older 32-bit VExpress platforms and can just
 be disabled.
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Merge tag 'vexpress-modules-for-soc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into arm/soc

VExpress modularization

This series enables building various Versatile Express platform drivers
as modules. The primary target is the Fast Model FVP which is supported
in Android. As Android is moving towards their GKI, or generic kernel,
the hardware support has to be in modules. Currently ARCH_VEXPRESS
enables several built-in only drivers. Some of these are needed, but
some are only needed for older 32-bit VExpress platforms and can just
be disabled.

* tag 'vexpress-modules-for-soc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  ARM: vexpress: Don't select VEXPRESS_CONFIG
  bus: vexpress-config: Support building as module
  vexpress: Move setting master site to vexpress-config bus
  bus: vexpress-config: simplify config bus probing
  bus: vexpress-config: Merge vexpress-syscfg into vexpress-config
  mfd: vexpress-sysreg: Support building as a module
  mfd: vexpress-sysreg: Use devres API variants
  mfd: vexpress-sysreg: Drop unused syscon child devices
  mfd: vexpress-sysreg: Drop selecting CONFIG_CLKSRC_MMIO
  clk: vexpress-osc: Support building as a module
  clk: vexpress-osc: Use the devres clock API variants
  clk: versatile: Only enable SP810 on 32-bit by default
  clk: versatile: Rework kconfig structure
  amba: Retry adding deferred devices at late_initcall
  arm64: vexpress: Don't select CONFIG_POWER_RESET_VEXPRESS
  ARM: vexpress: Move vexpress_flags_set() into arch code

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-05-15 23:04:40 +02:00
Rob Herring
e5006671ac clk: versatile: Drop the legacy IM-PD1 clock code
Now that the non-DT IM-PD1 support code has been removed, drop the clock
related code from clk-impd1.c.

Link: https://lore.kernel.org/r/20200428204945.21067-1-robh@kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-clk@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-05-15 22:54:23 +02:00
Rob Herring
75b272bd09 clk: vexpress-osc: Support building as a module
Enable building the vexpress-osc clock driver as a module.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: linux-clk@vger.kernel.org
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-05-13 12:42:45 -05:00
Linus Walleij
24661081ba clk: impd1: Look up clock-output-names
The IM-PD1 still need to pass the clock output names.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lkml.kernel.org/r/20200416081348.326833-1-linus.walleij@linaro.org
Fixes: 84655b762a ("clk: versatile: Add device tree probing for IM-PD1 clocks")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-05-05 12:13:12 -07:00
Rob Herring
03cc105f2e clk: vexpress-osc: Use the devres clock API variants
In preparation to enable the vexpress-osc clock driver as a module,
convert the driver to use the managed devres clock API variants. With
this, a driver .remove() hook is not needed.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-clk@vger.kernel.org
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-05-05 11:43:57 -05:00
Rob Herring
562bbb2335 clk: versatile: Only enable SP810 on 32-bit by default
While 64-bit Arm reference platforms have SP810 for clocks for SP804
timers, they are not needed since the arch timers are used instead.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-clk@vger.kernel.org
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-05-05 11:43:24 -05:00
Rob Herring
81134fb541 clk: versatile: Rework kconfig structure
CONFIG_COMMON_CLK_VERSATILE doesn't really do anything other than hiding
Arm Ltd reference platform clock drivers. It is both selected by the
platforms that need it and has a 'depends on' for those platforms. Let's
drop the selects and convert CONFIG_COMMON_CLK_VERSATILE into a
menuconfig entry. With this make CONFIG_ICST visible.

Move the 'select REGMAP_MMIO' to the drivers that require it (SP810 did
not).

This also has the side effect of enabling CONFIG_ICST for COMPILE_TEST
as it was not visible before.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-05-05 11:43:14 -05:00
Linus Walleij
84655b762a clk: versatile: Add device tree probing for IM-PD1 clocks
As we want to move these clocks over to probe from the device
tree we add a device tree probing path.

The old platform data path will be deleted once we have the
device tree overall code in place.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lkml.kernel.org/r/20200219103326.81120-3-linus.walleij@linaro.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-20 17:55:31 -07:00
Linus Walleij
eb9d6428a7 clk: versatile: Export icst_clk_setup()
Export this clock setup method so we can register the
IM-PD1 clocks with common code in the next step.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lkml.kernel.org/r/20200219103326.81120-2-linus.walleij@linaro.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-20 17:55:31 -07:00
Krzysztof Kozlowski
333d2d19df clk: Fix Kconfig indentation
Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
	$ sed -e 's/^        /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lkml.kernel.org/r/1574306335-29026-1-git-send-email-krzk@kernel.org
[sboyd@kernel.org: Fixup mediatek to have two spaces for help indent]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-01-04 23:34:39 -08:00
Nishka Dasgupta
5911dba556 clk: versatile: Add of_node_put() in cm_osc_setup()
In function cm_osc_setup, variable parent takes the value returned by
of_get_parent, which gets a node but does not put it. If parent is not
put before it goes out of scope, it may cause a memory leak.
Hence put parent before the function terminates.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lkml.kernel.org/r/20190804163445.6862-1-nishkadg.linux@gmail.com
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-08-07 15:25:25 -07:00
Thomas Gleixner
d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Thomas Gleixner
1802d0beec treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty 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 in 655 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:41 -07:00
Thomas Gleixner
ec8f24b7fa treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
Stephen Boyd
62e59c4e69 clk: Remove io.h from clk-provider.h
Now that we've gotten rid of clk_readl() we can remove io.h from the
clk-provider header and push out the io.h include to any code that isn't
already including the io.h header but using things like readl/writel,
etc.

Found with this grep:

  git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \
  	xargs git grep -l \
	-e '\<__iowrite32_copy\>' --or \
	-e '\<__ioread32_copy\>' --or \
	-e '\<__iowrite64_copy\>' --or \
	-e '\<ioremap_page_range\>' --or \
	-e '\<ioremap_huge_init\>' --or \
	-e '\<arch_ioremap_pud_supported\>' --or \
	-e '\<arch_ioremap_pmd_supported\>' --or \
	-e '\<devm_ioport_map\>' --or \
	-e '\<devm_ioport_unmap\>' --or \
	-e '\<IOMEM_ERR_PTR\>' --or \
	-e '\<devm_ioremap\>' --or \
	-e '\<devm_ioremap_nocache\>' --or \
	-e '\<devm_ioremap_wc\>' --or \
	-e '\<devm_iounmap\>' --or \
	-e '\<devm_ioremap_release\>' --or \
	-e '\<devm_memremap\>' --or \
	-e '\<devm_memunmap\>' --or \
	-e '\<__devm_memremap_pages\>' --or \
	-e '\<pci_remap_cfgspace\>' --or \
	-e '\<arch_has_dev_port\>' --or \
	-e '\<arch_phys_wc_add\>' --or \
	-e '\<arch_phys_wc_del\>' --or \
	-e '\<memremap\>' --or \
	-e '\<memunmap\>' --or \
	-e '\<arch_io_reserve_memtype_wc\>' --or \
	-e '\<arch_io_free_memtype_wc\>' --or \
	-e '\<__io_aw\>' --or \
	-e '\<__io_pbw\>' --or \
	-e '\<__io_paw\>' --or \
	-e '\<__io_pbr\>' --or \
	-e '\<__io_par\>' --or \
	-e '\<__raw_readb\>' --or \
	-e '\<__raw_readw\>' --or \
	-e '\<__raw_readl\>' --or \
	-e '\<__raw_readq\>' --or \
	-e '\<__raw_writeb\>' --or \
	-e '\<__raw_writew\>' --or \
	-e '\<__raw_writel\>' --or \
	-e '\<__raw_writeq\>' --or \
	-e '\<readb\>' --or \
	-e '\<readw\>' --or \
	-e '\<readl\>' --or \
	-e '\<readq\>' --or \
	-e '\<writeb\>' --or \
	-e '\<writew\>' --or \
	-e '\<writel\>' --or \
	-e '\<writeq\>' --or \
	-e '\<readb_relaxed\>' --or \
	-e '\<readw_relaxed\>' --or \
	-e '\<readl_relaxed\>' --or \
	-e '\<readq_relaxed\>' --or \
	-e '\<writeb_relaxed\>' --or \
	-e '\<writew_relaxed\>' --or \
	-e '\<writel_relaxed\>' --or \
	-e '\<writeq_relaxed\>' --or \
	-e '\<readsb\>' --or \
	-e '\<readsw\>' --or \
	-e '\<readsl\>' --or \
	-e '\<readsq\>' --or \
	-e '\<writesb\>' --or \
	-e '\<writesw\>' --or \
	-e '\<writesl\>' --or \
	-e '\<writesq\>' --or \
	-e '\<inb\>' --or \
	-e '\<inw\>' --or \
	-e '\<inl\>' --or \
	-e '\<outb\>' --or \
	-e '\<outw\>' --or \
	-e '\<outl\>' --or \
	-e '\<inb_p\>' --or \
	-e '\<inw_p\>' --or \
	-e '\<inl_p\>' --or \
	-e '\<outb_p\>' --or \
	-e '\<outw_p\>' --or \
	-e '\<outl_p\>' --or \
	-e '\<insb\>' --or \
	-e '\<insw\>' --or \
	-e '\<insl\>' --or \
	-e '\<outsb\>' --or \
	-e '\<outsw\>' --or \
	-e '\<outsl\>' --or \
	-e '\<insb_p\>' --or \
	-e '\<insw_p\>' --or \
	-e '\<insl_p\>' --or \
	-e '\<outsb_p\>' --or \
	-e '\<outsw_p\>' --or \
	-e '\<outsl_p\>' --or \
	-e '\<ioread8\>' --or \
	-e '\<ioread16\>' --or \
	-e '\<ioread32\>' --or \
	-e '\<ioread64\>' --or \
	-e '\<iowrite8\>' --or \
	-e '\<iowrite16\>' --or \
	-e '\<iowrite32\>' --or \
	-e '\<iowrite64\>' --or \
	-e '\<ioread16be\>' --or \
	-e '\<ioread32be\>' --or \
	-e '\<ioread64be\>' --or \
	-e '\<iowrite16be\>' --or \
	-e '\<iowrite32be\>' --or \
	-e '\<iowrite64be\>' --or \
	-e '\<ioread8_rep\>' --or \
	-e '\<ioread16_rep\>' --or \
	-e '\<ioread32_rep\>' --or \
	-e '\<ioread64_rep\>' --or \
	-e '\<iowrite8_rep\>' --or \
	-e '\<iowrite16_rep\>' --or \
	-e '\<iowrite32_rep\>' --or \
	-e '\<iowrite64_rep\>' --or \
	-e '\<__io_virt\>' --or \
	-e '\<pci_iounmap\>' --or \
	-e '\<virt_to_phys\>' --or \
	-e '\<phys_to_virt\>' --or \
	-e '\<ioremap_uc\>' --or \
	-e '\<ioremap\>' --or \
	-e '\<__ioremap\>' --or \
	-e '\<iounmap\>' --or \
	-e '\<ioremap\>' --or \
	-e '\<ioremap_nocache\>' --or \
	-e '\<ioremap_uc\>' --or \
	-e '\<ioremap_wc\>' --or \
	-e '\<ioremap_wc\>' --or \
	-e '\<ioremap_wt\>' --or \
	-e '\<ioport_map\>' --or \
	-e '\<ioport_unmap\>' --or \
	-e '\<ioport_map\>' --or \
	-e '\<ioport_unmap\>' --or \
	-e '\<xlate_dev_kmem_ptr\>' --or \
	-e '\<xlate_dev_mem_ptr\>' --or \
	-e '\<unxlate_dev_mem_ptr\>' --or \
	-e '\<virt_to_bus\>' --or \
	-e '\<bus_to_virt\>' --or \
	-e '\<memset_io\>' --or \
	-e '\<memcpy_fromio\>' --or \
	-e '\<memcpy_toio\>'

I also reordered a couple includes when they weren't alphabetical and
removed clk.h from kona, replacing it with clk-provider.h because
that driver doesn't use clk consumer APIs.

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: John Crispin <john@phrozen.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-15 13:21:37 -07:00
Stephen Boyd
354e121006 clk: versatile: sp810: Remove usage of CLK_IS_BASIC
This flag doesn't look to be used by any code, just set in the clk init
structure and then never tested again. Remove it from this driver as it
doesn't provide any benefit.

Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-12-10 14:44:05 -08:00
Brian Starkey
a1d803d78b clk: versatile: Remove WARNs in ->round_rate()
clk_round_rate() is intended to be used to round a given clock rate to
the closest one achievable by the actual clock. This implies that the
input to clk_round_rate() is expected to be unachievable - and such
cases shouldn't be treated as exceptional.

To reflect this, remove the WARN_ONs which trigger when an unachievable
clock rate is passed to vexpress_osc_round_rate().

Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Brian Starkey <brian.starkey@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-16 15:31:16 -07:00
Sudeep Holla
aff2dc6b49 clk: versatile: add min/max rate boundaries for vexpress osc clock
Clock framework has a provider API(clk_hw_set_rate_range) to set the
min/max rate of a clock. Use the same to set the boundaries for the
vexpress osc clock.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-16 15:29:54 -07:00
Linus Torvalds
fc35c1966e We have two changes to the core framework this time around. The first being a
large change that introduces runtime PM support to the clk framework. Now we
 properly call runtime PM operations on the device providing a clk when the clk
 is in use. This helps on SoCs where the clks provided by a device need
 something to be powered on before using the clks, like power domains or
 regulators. It also helps power those things down when clks aren't in use. The
 other core change is a devm API addition for clk providers so we can get rid of
 a bunch of clk driver remove functions that are just doing
 of_clk_del_provider().
 
 Outside of the core, we have the usual addition of clk drivers and smattering
 of non-critical fixes to existing drivers. The biggest diff is support for
 Mediatek MT2712 and MT7622 SoCs, but those patches really just add a bunch
 of data.
 
 By the way, we're trying something new here where we build the tree up with
 topic branches. We plan to work this into our workflow so that we don't step
 on each other's toes, and so the fixes branch can be merged on an as-needed
 basis.
 
 Core:
  - Runtime PM support for clk providers
  - devm API for of_clk_add_hw_provider()
 
 New Drivers:
  - Mediatek MT2712 and MT7622
  - Renesas R-Car V3M SoC
 
 Updates:
  - Runtime PM support for Samsung exynos5433/exynos4412 providers
  - Removal of clkdev aliases on Samsung SoCs
  - Convert clk-gpio to use gpio descriptors
  - Various driver cleanups to match kernel coding style
  - Amlogic Video Processing Unit VPU and VAPB clks
  - Sigma-delta modulation for Allwinner audio PLLs
  - Allwinner A83t Display clks
  - Support for the second display unit clock on Renesas RZ/G1E
  - Suspend/resume support for Renesas R-Car Gen3 CPG/MSSR
  - New clock ids for Rockchip rk3188 and rk3368 SoCs
  - Various 'const' markings on clk_ops structures
  - RPM clk support on Qualcomm MSM8996/MSM8660 SoCs
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "We have two changes to the core framework this time around.

  The first being a large change that introduces runtime PM support to
  the clk framework. Now we properly call runtime PM operations on the
  device providing a clk when the clk is in use. This helps on SoCs
  where the clks provided by a device need something to be powered on
  before using the clks, like power domains or regulators. It also helps
  power those things down when clks aren't in use.

  The other core change is a devm API addition for clk providers so we
  can get rid of a bunch of clk driver remove functions that are just
  doing of_clk_del_provider().

  Outside of the core, we have the usual addition of clk drivers and
  smattering of non-critical fixes to existing drivers. The biggest diff
  is support for Mediatek MT2712 and MT7622 SoCs, but those patches
  really just add a bunch of data.

  By the way, we're trying something new here where we build the tree up
  with topic branches. We plan to work this into our workflow so that we
  don't step on each other's toes, and so the fixes branch can be merged
  on an as-needed basis.

  Summary:

  Core:
   - runtime PM support for clk providers
   - devm API for of_clk_add_hw_provider()

  New Drivers:
   - Mediatek MT2712 and MT7622
   - Renesas R-Car V3M SoC

  Updates:
   - runtime PM support for Samsung exynos5433/exynos4412 providers
   - removal of clkdev aliases on Samsung SoCs
   - convert clk-gpio to use gpio descriptors
   - various driver cleanups to match kernel coding style
   - Amlogic Video Processing Unit VPU and VAPB clks
   - sigma-delta modulation for Allwinner audio PLLs
   - Allwinner A83t Display clks
   - support for the second display unit clock on Renesas RZ/G1E
   - suspend/resume support for Renesas R-Car Gen3 CPG/MSSR
   - new clock ids for Rockchip rk3188 and rk3368 SoCs
   - various 'const' markings on clk_ops structures
   - RPM clk support on Qualcomm MSM8996/MSM8660 SoCs"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (137 commits)
  clk: stm32h7: fix test of clock config
  clk: pxa: fix building on older compilers
  clk: sunxi-ng: a83t: Fix i2c buses bits
  clk: ti: dra7-atl-clock: fix child-node lookups
  clk: qcom: common: fix legacy board-clock registration
  clk: uniphier: fix DAPLL2 clock rate of Pro5
  clk: uniphier: fix parent of miodmac clock data
  clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu'
  clk: hisilicon: Delete an error message for a failed memory allocation in hisi_register_clkgate_sep()
  clk: hi3660: fix incorrect uart3 clock freqency
  clk: kona-setup: Delete error messages for failed memory allocations
  ARC: clk: fix spelling mistake: "configurarion" -> "configuration"
  clk: cdce925: remove redundant check for non-null parent_name
  clk: versatile: Improve sizeof() usage
  clk: versatile: Delete error messages for failed memory allocations
  clk: ux500: Improve sizeof() usage
  clk: ux500: Delete error messages for failed memory allocations
  clk: spear: Delete error messages for failed memory allocations
  clk: ti: Delete error messages for failed memory allocations
  clk: mmp: Adjust checks for NULL pointers
  ...
2017-11-17 20:04:24 -08:00
Markus Elfring
a72da43c92 clk: versatile: Improve sizeof() usage
Replace the specification of a data structure by a pointer
dereference as the parameter for the operator "sizeof" to make
the corresponding size determination a bit safer according to the
Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-11-13 17:42:56 -08:00
Markus Elfring
e343b81e4d clk: versatile: Delete error messages for failed memory allocations
Omit extra messages for a memory allocation failure in this
function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-11-13 17:42:44 -08:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Bhumika Goyal
2c606871f3 clk: versatile: make clk_ops const
Make this const as it is only stored in the const field of a
clk_init_data structure.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-08-30 22:38:59 -07:00
Linus Walleij
cfe76a28e3 clk: versatile: delete old RealView clock implementation
The old RealView clock implementation is not used anymore
(nothing in the kernel calls realview_clk_init()) as we have
moved all clocks over to device tree. Delete it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-06-02 16:27:17 -07:00
Linus Walleij
ba3fae06c7 ARM/clk: move the ICST library to drivers/clk
This moves the ICST clock divider helper library from
arch/arm/common to drivers/clk/versatile so it is maintained
with the other clock drivers.

We keep the structure as a helper library intact and do not
fuse it with the clk-icst.c Versatile ICST clock driver: there
may be other users out there that need to use this library for
their clocking, and then it will be helpful to keep the
library contained. (The icst.[c|h] files could just be moved
to drivers/clk/lib or a similar location to share the library.)

Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-04-07 11:58:12 +02:00
Linus Walleij
fa62e10d26 clk: versatile/icst: support for AP baseboard clocks
This adds support for the two ICST525-based clocks on the
Integrator/AP baseboard, as documented in the board manual
"Integrator/AP ASIC Development Motherboard", ARM DUI0098 B,
pages 3-15 thru 3-18.

Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[sboyd@codeaurora.org: fixed uninitialized val warning]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-08-29 11:38:51 -07:00
Linus Walleij
5e23c59305 clk: versatile/icst: add Integrator core module clocks
The Integrator/AP and Integrator/CP have special derivatives
of the ICST525 control registers, where some bits have been
hardwired but others are possible to adjust, resulting in a
control register that makes it possible to set an even,
desired megahertz value.

The Integrator/AP and Integrator/CP have slightly different
layout so we support them using different compatible
strings.

After adding these clocks, the Integrator-specific cpufreq
driver can be switched over to use the generic operating
point device tree cpufreq driver.

Instead of simply writing a value to the oscillator control
register we switch to the more elaborate method of providing
a bitmask and use regmap_update_bits() to poke the right bits
for the desired frequency, this is needed since these control
registers sometimes control more than one clock.

Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-08-25 13:03:52 -07:00
Stephen Boyd
ac82a8b507 clk: versatile: Remove CLK_IS_ROOT
This flag is a no-op now. Remove usage of the flag.

Cc: Pawel Moll <pawel.moll@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-03-15 15:19:21 -07:00
Linus Walleij
ec7957a6aa clk: versatile: sp810: support reentrance
Despite care take to allocate clocks state containers the
SP810 driver actually just supports creating one instance:
all clocks registered for every instance will end up with the
exact same name and __clk_init() will fail.

Rename the timclken<0> .. timclken<n> to sp810_<instance>_<n>
so every clock on every instance gets a unique name.

This is necessary for the RealView PBA8 which has two SP810
blocks: the second block will not register its clocks unless
every clock on every instance is unique and results in boot
logs like this:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at ../drivers/clk/versatile/clk-sp810.c:137
  clk_sp810_of_setup+0x110/0x154()
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.5.0-rc2-00030-g352718fc39f6-dirty #225
Hardware name: ARM RealView Machine (Device Tree Support)
[<c00167f8>] (unwind_backtrace) from [<c0013204>]
             (show_stack+0x10/0x14)
[<c0013204>] (show_stack) from [<c01a049c>]
             (dump_stack+0x84/0x9c)
[<c01a049c>] (dump_stack) from [<c0024990>]
             (warn_slowpath_common+0x74/0xb0)
[<c0024990>] (warn_slowpath_common) from [<c0024a68>]
             (warn_slowpath_null+0x1c/0x24)
[<c0024a68>] (warn_slowpath_null) from [<c051eb44>]
             (clk_sp810_of_setup+0x110/0x154)
[<c051eb44>] (clk_sp810_of_setup) from [<c051e3a4>]
             (of_clk_init+0x12c/0x1c8)
[<c051e3a4>] (of_clk_init) from [<c0504714>]
             (time_init+0x20/0x2c)
[<c0504714>] (time_init) from [<c0501b18>]
             (start_kernel+0x244/0x3c4)
[<c0501b18>] (start_kernel) from [<7000807c>] (0x7000807c)
---[ end trace cb88537fdc8fa200 ]---

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Fixes: 6e973d2c43 "clk: vexpress: Add separate SP810 driver"
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-02-25 15:03:28 -08:00
Linus Walleij
df9cd56421 clk: versatile: mask VCO bits before writing
The Versatile syscon ICST driver OR:s the bits into place but
forgets to mask the previous value, making the code only work
if the register is zero or giving haphazard results. Mask the
19 bits used by the Versatile syscon interface register.

Regression caused and now fixed by yours truly.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Fixes: 179c8fb3c2 ("clk: versatile-icst: convert to use regmap")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-02-10 09:56:31 -08:00
Linus Torvalds
6b5a12dbca ARM: SoC multiplatform code changes for v4.5
This branch is the culmination of 5 years of effort to bring the ARMv6
 and ARMv7 platforms together such that they can all be enabled and
 boot the same kernel. It has been a tremendous amount of cleanup and
 refactoring by a huge number of people, and creation of several new
 (and major) subsystems to better abstract out all the platform details
 in an appropriate manner.
 
 The bulk of this branch is a large patchset from Arnd that brings several
 of the more minor and older platforms we have closer to multiplatform
 support.  Among these are MMP, S3C64xx, Orion5x, mv78xx0 and realview
 Much of this is moving around header files from old mach directories,
 but there are also some cleanup patches of debug_ll (lowlevel debug
 per-platform options) and other parts.
 
 Linus Walleij also has some patchs to clean up the older ARM Realview
 platforms by finally introducing DT support, and Rob Herring has some
 for ARM Versatile which is now DT-only. Both of these platforms are
 now multiplatform.
 
 Finally, a couple of patches from Russell for Dove PMU, and a fix from
 Valentin Rothberg for Exynos ADC, which were rebased on top of the
 series to avoid conflicts.
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Merge tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC multiplatform code updates from Arnd Bergmann:
 "This branch is the culmination of 5 years of effort to bring the ARMv6
  and ARMv7 platforms together such that they can all be enabled and
  boot the same kernel.  It has been a tremendous amount of cleanup and
  refactoring by a huge number of people, and creation of several new
  (and major) subsystems to better abstract out all the platform details
  in an appropriate manner.

  The bulk of this branch is a large patchset from Arnd that brings
  several of the more minor and older platforms we have closer to
  multiplatform support.  Among these are MMP, S3C64xx, Orion5x, mv78xx0
  and realview Much of this is moving around header files from old mach
  directories, but there are also some cleanup patches of debug_ll
  (lowlevel debug per-platform options) and other parts.

  Linus Walleij also has some patchs to clean up the older ARM Realview
  platforms by finally introducing DT support, and Rob Herring has some
  for ARM Versatile which is now DT-only.  Both of these platforms are
  now multiplatform.

  Finally, a couple of patches from Russell for Dove PMU, and a fix from
  Valentin Rothberg for Exynos ADC, which were rebased on top of the
  series to avoid conflicts"

* tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (75 commits)
  ARM: realview: don't select SMP_ON_UP for UP builds
  ARM: s3c: simplify s3c_irqwake_{e,}intallow definition
  ARM: s3c64xx: fix pm-debug compilation
  iio: exynos-adc: fix irqf_oneshot.cocci warnings
  ARM: realview: build realview-dt SMP support only when used
  ARM: realview: select apropriate targets
  ARM: realview: clean up header files
  ARM: realview: make all header files local
  ARM: no longer make CPU targets visible separately
  ARM: integrator: use explicit core module options
  ARM: realview: enable multiplatform
  ARM: make default platform work for NOMMU
  ARM: debug-ll: move DEBUG_LL_UART_EFM32 to correct Kconfig location
  ARM: defconfig: use correct debug_ll settings
  ARM: versatile: convert to multi-platform
  ARM: versatile: merge mach code into a single file
  ARM: versatile: switch to DT only booting and remove legacy code
  ARM: versatile: add DT based PCI detection
  ARM: pxa: mark ezx structures as __maybe_unused
  ARM: pxa: mark raumfeld init functions as __maybe_unused
  ...
2016-01-20 18:03:56 -08:00
Arnd Bergmann
22ba14f41c The board and infrastructure changes for RealView
multiplatform and extended DT support.
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Merge tag 'realview-base-armsoc-1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/multiplatform

Merge "Realview multiplatform support" from Linus Walleij:

The board and infrastructure changes for RealView
multiplatform and extended DT support.

* tag 'realview-base-armsoc-1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  ARM: realview: add an DT SMP boot method
  ARM: realview: select SP810 and ICST for the DT variant
  soc: versatile: add support for the PB11MPCore
  clk: versatile-icst: add device tree support
  clk: versatile-icst: refactor to allocate regmap separately
  clk: versatile-icst: convert to use regmap
  ARM: realview: remove private barrier implementation
  ARM: no longer force unbuffered DMA for realview
  clk/realview: stop using machine headers
  ARM: realview: don't map undefined PCI registers
  ARM: realview: remove sparsemem hack

Conflicts:
	drivers/clk/versatile/Kconfig
2015-12-16 00:56:18 +01:00
Rob Herring
16956fed35 ARM: versatile: switch to DT only booting and remove legacy code
With DT support for clocks, irqchips, timers, and PCI now in place, DT
based booting has feature parity with non-DT legacy boot. The final
piece is actually enabling common clock support on Versatile. Enabling
full DT support requires either removing the old Versatile clock code,
updating the legacy boot to use the common clock code, or making DT and
legacy boot mutually exclusive. Given that removing legacy boot code is
the goal anyway, I am going with the 1st option.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-12-15 23:53:21 +01:00
Linus Walleij
d430819d69 clk: versatile-icst: add device tree support
This adds support for the ARM syscon ICST clocks to initialized
directly from the device tree syscon node on ARM Integrator,
Versatile and RealView reference designs.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:42:50 +01:00
Linus Walleij
384d977d74 clk: versatile-icst: refactor to allocate regmap separately
Break out the registration function so it creates a regmap and
pass to the setup function, so the latter can be shared with
a device tree probe function that already has a regmap.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:42:49 +01:00
Linus Walleij
179c8fb3c2 clk: versatile-icst: convert to use regmap
Instead of passing around register bases, pass around a regmap
in this driver. This refactoring make things so much easier when
we later want to manage an ICST that is part of a syscon.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:42:48 +01:00
Arnd Bergmann
3c30a4a357 clk/realview: stop using machine headers
In order to move realview into multiplatform, we have to prevent device
drivers from accessing the machine header files.

In case of the clk driver, this is very simple, we just copy the
small set of register definitions into the driver that needs them.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:41:33 +01:00
Sudip Mukherjee
59fe66313a clk: versatile: remove unneeded error message
If kzalloc fails we will already have many messages in the log and we do
not need another message to know that kzalloc for sp810 has failed.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-11-20 09:17:18 -08:00
Sudip Mukherjee
47c5ee34d8 clk: versatile: fix memory leak
If of_clk_parent_fill() fails then we printed an error message and
returned. But we missed freeing sp810.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-11-18 14:25:48 -08:00