Commit Graph

141 Commits

Author SHA1 Message Date
Jiang Jian 15ff0bbc3d mfd: db8500-prcmu: Drop duplicated word "the" in the comments
There is an unexpected word "the" in the comments that needs to be dropped.

Line 801: * This function sets the the operating point of the ARM.
                               -------

Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220621103839.96847-1-jiangjian@cdjrlc.com
2022-07-19 10:54:41 +01:00
Linus Walleij c738888032 watchdog: db8500_wdt: Rename symbols
For conistency and clarity, rename all symbols and strings from
ux500 to db8500 in the driver.

Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210922230947.1864357-3-linus.walleij@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2021-11-01 20:18:09 +01:00
Linus Walleij 74128d801b watchdog: ux500_wdt: Drop platform data
Drop the platform data passing from the PRCMU driver. This platform
data was part of the ambition to support more SoCs, which in turn
were never mass produced.

Only a name remains of the MFD cell so switch to MFD_CELL_NAME().

Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210922230947.1864357-1-linus.walleij@linaro.org
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2021-11-01 20:18:08 +01:00
Linus Torvalds 86406a9e73 - Core Frameworks
- Add support for registering devices via MFD cells to Simple MFD (I2C)
 
  - New Drivers
    - Add support for Renesas Synchronization Management Unit (SMU)
 
  - New Device Support
    - Add support for N5010 to Intel M10 BMC
    - Add support for Cannon Lake to Intel LPSS ACPI
    - Add support for Samsung SSG{1,2} to ST-Ericsson's U8500 family
    - Add support for TQMx110EB and TQMxE40x to TQ-Systems PLD TQMx86
 
  - New Functionality
    - Add support for GPIO to Intel LPC ICH
    - Add support for Reset to Texas Instruments TPS65086
 
  - Fix-ups
    - Trivial, sorting, whitespace, renaming, etc; mt6360-core, db8500-prcmu-regs, tqmx86
    - Device Tree fiddling; syscon, axp20x, qcom,pm8008, ti,tps65086, brcm,cru
    - Use proper APIs for IRQ map resolution; ab8500-core, stmpe, tc3589x, wm8994-irq
    - Pass 'supplied-from' property through axp288_fuel_gauge via swnode
    - Remove unused file entry; MAINTAINERS
    - Make interrupt line optional; tps65086
    - Rename db8500-cpuidle driver symbol; db8500-prcmu
    - Remove support for unused hardware; tqmx86
    - Provide a standard LPC clock frequency for unknown boards; tqmx86
    - Remove unused code; ti_am335x_tscadc
    - Use of_iomap() instead of ioremap(); syscon
 
  - Bug Fixes
    - Clear GPIO IRQ resource flags when no IRQ is set; tqmx86
    - Fix incorrect/misleading frequencies; db8500-prcmu
    - Mitigate namespace clash with other GPIOBASE users
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Merge tag 'mfd-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Core Frameworks:
   - Add support for registering devices via MFD cells to Simple MFD (I2C)

  New Drivers:
   - Add support for Renesas Synchronization Management Unit (SMU)

  New Device Support:
   - Add support for N5010 to Intel M10 BMC
   - Add support for Cannon Lake to Intel LPSS ACPI
   - Add support for Samsung SSG{1,2} to ST-Ericsson's U8500 family
   - Add support for TQMx110EB and TQMxE40x to TQ-Systems PLD TQMx86

  New Functionality:
   - Add support for GPIO to Intel LPC ICH
   - Add support for Reset to Texas Instruments TPS65086

  Fix-ups:
   - Trivial, sorting, whitespace, renaming, etc; mt6360-core, db8500-prcmu-regs, tqmx86
   - Device Tree fiddling; syscon, axp20x, qcom,pm8008, ti,tps65086, brcm,cru
   - Use proper APIs for IRQ map resolution; ab8500-core, stmpe, tc3589x, wm8994-irq
   - Pass 'supplied-from' property through axp288_fuel_gauge via swnode
   - Remove unused file entry; MAINTAINERS
   - Make interrupt line optional; tps65086
   - Rename db8500-cpuidle driver symbol; db8500-prcmu
   - Remove support for unused hardware; tqmx86
   - Provide a standard LPC clock frequency for unknown boards; tqmx86
   - Remove unused code; ti_am335x_tscadc
   - Use of_iomap() instead of ioremap(); syscon

  Bug Fixes:
   - Clear GPIO IRQ resource flags when no IRQ is set; tqmx86
   - Fix incorrect/misleading frequencies; db8500-prcmu
   - Mitigate namespace clash with other GPIOBASE users"

* tag 'mfd-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (31 commits)
  mfd: lpc_sch: Rename GPIOBASE to prevent build error
  mfd: syscon: Use of_iomap() instead of ioremap()
  dt-bindings: mfd: Add Broadcom CRU
  mfd: ti_am335x_tscadc: Delete superfluous error message
  mfd: tqmx86: Assume 24MHz LPC clock for unknown boards
  mfd: tqmx86: Add support for TQ-Systems DMI IDs
  mfd: tqmx86: Add support for TQMx110EB and TQMxE40x
  mfd: tqmx86: Fix typo in "platform"
  mfd: tqmx86: Remove incorrect TQMx90UC board ID
  mfd: tqmx86: Clear GPIO IRQ resource when no IRQ is set
  mfd: simple-mfd-i2c: Add support for registering devices via MFD cells
  mfd/cpuidle: ux500: Rename driver symbol
  mfd: tps65086: Add cell entry for reset driver
  mfd: tps65086: Make interrupt line optional
  dt-bindings: mfd: Convert tps65086.txt to YAML
  MAINTAINERS: Adjust ARM/NOMADIK/Ux500 ARCHITECTURES to file renaming
  mfd: db8500-prcmu: Handle missing FW variant
  mfd: db8500-prcmu: Rename register header
  mfd: axp20x: Add supplied-from property to axp288_fuel_gauge cell
  mfd: Don't use irq_create_mapping() to resolve a mapping
  ...
2021-09-07 12:38:59 -07:00
Linus Walleij f28fd3b6f7 mfd/cpuidle: ux500: Rename driver symbol
The PRCMU driver defines this as a DT node but there are no bindings
for it and it needs no data from the device tree. Just spawn the
device directly in the same way as the watchdog.

Name it "db8500-cpuidle" since there are no ambitions to support any
more SoCs than this one.

This rids this annoying boot message:
[    0.032610] cpuidle-dbx500: Failed to locate of_node [id: 0]

However I think the device still spawns and work just fine, despite
not finding a device tree node.

Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16 13:42:34 +01:00
Marc Zyngier 3b0cccef05 mfd: Bulk conversion to generic_handle_domain_irq()
Wherever possible, replace constructs that match either
generic_handle_irq(irq_find_mapping()) or
generic_handle_irq(irq_linear_revmap()) to a single call to
generic_handle_domain_irq().

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-08-12 11:39:39 +01:00
Linus Walleij 9050ad816f mfd: db8500-prcmu: Handle missing FW variant
There was an "unknown" firmware variant turning up in the wild
causing problems in the clock driver. Add this missing variant
and clarify that varian 11 and 15 are Samsung variants, as this
is now very well known from released products.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-09 09:33:29 +01:00
Linus Walleij 8f00b3c41a mfd: db8500-prcmu: Rename register header
Drop the ambition to support dbx500, the other SoCs in this series
were never deleted and the support for them has been deleted.
DB8500 is what we support.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-05 14:19:59 +01:00
Linus Walleij ec343111c0 mfd: db8500-prcmu: Adjust map to reality
These are the actual frequencies reported by the PLL, so let's
report these. The roundoffs are inappropriate, we should round
to the frequency that the clock will later report.

Drop some whitespace at the same time.

Cc: phone-devel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-02 08:45:36 +01:00
Lee Jones e00a953b7a mfd: db8500-prcmu: Fix multiple incorrectly documented function names
Fixes the following W=1 kernel build warning(s):

 drivers/mfd/db8500-prcmu.c:624: warning: expecting prototype for prcmu_get_current_mode(). Prototype was for prcmu_get_xp70_current_state() instead
 drivers/mfd/db8500-prcmu.c:908: warning: expecting prototype for db8500_set_ape_opp(). Prototype was for db8500_prcmu_set_ape_opp() instead
 drivers/mfd/db8500-prcmu.c:2303: warning: expecting prototype for db8500_prcmu_reset_modem(). Prototype was for db8500_prcmu_modem_reset() instead

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
Cc: Sundar Iyer <sundar.iyer@stericsson.com>
Cc: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-06-02 10:50:03 +01:00
Lee Jones db783e769a mfd: Standardise MFD_CELL_* helper names
Start all helpers with "MFD_CELL_".

Cc: Gene Chen <gene_chen@richtek.com>
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-02-08 13:54:12 +00:00
Gustavo A. R. Silva df561f6688 treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-23 17:36:59 -05:00
Lee Jones 07d88c97ae mfd: db8500-prcmu: Remove incorrect function header from .probe() function
Not only is the current header incorrect, the isn't actually a
need to document the ubiquitous platform probe call.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-06 08:31:58 +01:00
Lee Jones 3ecbcd20e0 mfd: db8500-prcmu: Add description for 'reset_reason' in kerneldoc
Each function parameter should be documented in kerneldoc format.

Squashes the following W=1 warnings:

 drivers/mfd/db8500-prcmu.c:2281: warning: Function parameter or member 'reset_code' not described in 'db8500_prcmu_system_reset'
 drivers/mfd/db8500-prcmu.c:3012: warning: Function parameter or member 'pdev' not described in 'db8500_prcmu_probe'

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-06 08:31:57 +01:00
Linus Walleij 2cce09eb11 mfd: dbx500-prcmu: Drop DSI pll clock functions
The DSI PLLs are handled by the generic clock framework
since ages, this code is completely unused and misleading.
Delete it.

Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-01-24 07:33:58 +00:00
Linus Walleij f41810921b mfd: dbx500-prcmu: Drop set_display_clocks()
The display clocks are handled by the generic clock framework
since ages, this code is completely unused and misleading.
Delete it.

Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-01-24 07:33:58 +00:00
Stephan Gerhold 1c0769d209 mfd: ab8500-core: Add device tree support for AB8505
AB8505 support was never fully converted to the device tree.
Most of the MFD cells for AB8505 lack an "of_compatible",
which prevents them from being configured through the device tree.

Align the definition of the AB8505 MFD cells with the ones for AB8500,
and add device tree compatibles. Except for GPIO and regulators the
compatibles are equal to those used for AB8500 because the hardware
does not differ much.

Finally, change db8500_prcmu_register_ab8500() to check for the AB8505
device tree node additionally, and probe it if it is found.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-01-24 07:33:57 +00:00
Linus Walleij 22fb3ad0cc mfd: db8500-prcmu: Support U8420-sysclk firmware
There is a distinct version of the Ux500 U8420 variant
with "sysclk", as can be seen from the vendor code that
didn't make it upstream, this firmware lacks the
ULPPLL (ultra-low power phase locked loop) which in
effect means that the timer clock is instead wired to
the 32768 Hz always-on clock.

This has some repercussions when enabling the timer
clock as the code as it stands will disable the timer
clock on these platforms (lacking the so-called
"doze mode") and obtaining the wrong rate of the timer
clock.

The timer frequency is of course needed very early in
the boot, and as a consequence, we need to shuffle
around the early PRCMU init code: whereas in the past
we did not need to look up the PRCMU firmware version
in the early init, but now we need to know the version
before the core system timers are registered so we
restructure the platform callbacks to the PRCMU so as
not to take any arguments and instead look up the
resources it needs directly from the device tree
when initializing.

As we do not yet support any platforms using this
firmware it is not a regression, but as PostmarketOS
is starting to support products with this firmware we
need to fix this up.

The low rate of 32kHz also makes the MTU timer unsuitable
as delay timer but this needs to be fixed in a separate
patch.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-11-11 08:45:04 +00:00
Lee Jones a04b4be677 mfd: db8500-prcmu: Example using new OF_MFD_CELL/MFD_CELL_BASIC MACROs
... with and without 'resources'.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
2019-11-11 08:45:02 +00:00
Linus Torvalds 939ca9f175 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal SoC updates from Eduardo Valentin:
 "This is a really small pull in the midst of a lot of pending patches.

  We are in the middle of restructuring how we are maintaining the
  thermal subsystem, as per discussion in our last LPC. For now, I am
  sending just some changes that were pending in my tree. Looking
  forward to get a more streamlined process in the next merge window"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: db8500: Rewrite to be a pure OF sensor
  thermal: db8500: Use dev helper variable
  thermal: db8500: Finalize device tree conversion
  thermal: thermal_mmio: remove some dead code
2019-09-29 10:24:23 -07:00
Linus Walleij cb063a83ca thermal: db8500: Finalize device tree conversion
At some point there was an attempt to convert the DB8500
thermal sensor to device tree: a probe path was added
and the device tree was augmented for the Snowball board.
The switchover was never completed: instead the thermal
devices came from from the PRCMU MFD device and the probe
on the Snowball was confused as another set of configuration
appeared from the device tree.

Move over to a device-tree only approach, as we fixed up
the device trees.

Cc: Vincent Guittot <vincent.guittot@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2019-09-24 22:54:49 -07:00
Linus Walleij fea3ac55e1 mfd: db8500-prcmu: Support the higher DB8520 ARMSS
The DB8520 used in a lot of Samsung phones has a slightly higher
maximum ARMSS frequency than the DB8500. In order to not confuse
the OPP framework and cpufreq, make sure the PRCMU driver
returns the correct frequency.

Cc: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-09-02 11:09:03 +01:00
Stephen Boyd 802d9bd4fa mfd: Remove dev_err() usage after platform_get_irq()
We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// <smpl>
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>

While we're here, remove braces on if statements that only have one
statement (manually).

Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-08-12 11:29:47 +01:00
Gustavo A. R. Silva b620c17672 mfd: db8500-prcmu: Mark expected switch fall-throughs
Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/mfd/db8500-prcmu.c: In function 'dsiclk_rate':
drivers/mfd/db8500-prcmu.c:1592:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1593:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI_2:
  ^~~~
drivers/mfd/db8500-prcmu.c:1594:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1595:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI:
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-08-12 11:29:07 +01:00
Gustavo A. R. Silva 795952d9f4 mfd: db8500-prcmu: Mark expected switch fall-throughs
Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/mfd/db8500-prcmu.c: In function 'dsiclk_rate':
drivers/mfd/db8500-prcmu.c:1592:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1593:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI_2:
  ^~~~
drivers/mfd/db8500-prcmu.c:1594:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1595:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI:
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
2019-08-09 19:46:05 -05:00
Thomas Gleixner 0376148f30 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 197
Based on 1 normalized pattern(s):

  license terms gnu general public license v2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 37 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170027.724130665@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:29:22 -07:00
Paul Gortmaker adef9cf549 mfd: db8500-prcmu: Drop unused MODULE_ tags from non-modular code
The Kconfig currently controlling compilation of this code is:

drivers/mfd/Kconfig:config MFD_DB8500_PRCMU
drivers/mfd/Kconfig:    bool "ST-Ericsson DB8500 Power Reset Control Management Unit"

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

We replace module.h with init.h and export.h ; the latter since the
file does export some symbols.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-02-01 08:21:13 +00:00
Nathan Chancellor a3888f62fe mfd: db8500-prcmu: Fix some section annotations
When building the kernel with Clang, the following section mismatch
warnings appear:

WARNING: vmlinux.o(.text+0x7239cc): Section mismatch in reference from
the function db8500_prcmu_probe() to the function
.init.text:init_prcm_registers()
The function db8500_prcmu_probe() references
the function __init init_prcm_registers().
This is often because db8500_prcmu_probe lacks a __init
annotation or the annotation of init_prcm_registers is wrong.

WARNING: vmlinux.o(.text+0x723e28): Section mismatch in reference from
the function db8500_prcmu_probe() to the function
.init.text:fw_project_name()
The function db8500_prcmu_probe() references
the function __init fw_project_name().
This is often because db8500_prcmu_probe lacks a __init
annotation or the annotation of fw_project_name is wrong.

db8500_prcmu_probe should not be marked as __init so remove the __init
annotation from fw_project_name and init_prcm_registers.

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-01-03 08:32:42 +00:00
Linus Walleij 836a1e25df mfd: db8500-prcmu: Get rid of cpufreq dependency
The ARMSS clock, also known as the operating point of the
CPU, should not cross-depend on cpufreq like this. Move
the code to use just frequencies and remove the false
frequency (1GHz) and put in the actual frequency provided
by the ARMSS clock (998400000 Hz) as part of the process.

After this and the related cpufreq patch, the DB8500 will
simply use the standard DT cpufreq driver to change the
operating points through the common clock framework using
the ARMSS clock.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-22 15:49:33 +02:00
Joe Perches 81d30eda98 mfd: Convert remaining uses of pr_warning to pr_warn
To enable eventual removal of pr_warning

This makes pr_warn use consistent for drivers/mfd

Prior to this patch, there were 4 uses of pr_warning and
9 uses of pr_warn in drivers/mfd

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2017-04-27 09:25:05 +01:00
Lee Jones 45ff2b685a mfd: db8500-prcmu: Remove unused *prcmu_set_ddr_opp() calls
There are no call sites for these functions.  Strip them out.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04 15:48:05 +01:00
Arnd Bergmann 4e657946cb mfd: db8500 stop passing around platform data
Except for the constant DB8500_PRCMU_FW_VERSION_OFFSET number, nothing
is ever passed through the platform data and used in a driver, so we
can simply stop passing it around.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-12 11:23:58 +02:00
Linus Torvalds 12e7b0a627 - New Drivers
- Freescale Touch Screen ADC
    - X-Powers AXP PMIC with RSB
    - TI TPS65086 Power Management IC (PMIC)
  - New Device Support
    - Supply device PCI IDs for Intel Broxton
  - Fix-ups
    - Move to clkdev_create() API; intel_quark_i2c_gpio
    - Complete re-write of TI's TPS65912 Power Management IC (PMIC)
    - Remove unnecessary function argument; axp20x
    - Separate out bus related code; axp20x
    - Coding Style changes; axp20x
    - Allow more drivers to be compiled as modules
    - Work around false positive 'used uninitialised' warning; db8500-prcmu
  - Bug Fixes
    - Remove do_div(); fsl-imx25-gcq
    - Fix driver init when built-in; tps65010
    - Fix clock-unregister leak; intel-lpss
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Merge tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Freescale Touch Screen ADC
   - X-Powers AXP PMIC with RSB
   - TI TPS65086 Power Management IC (PMIC)

  New Device Support:
   - Supply device PCI IDs for Intel Broxton

  Fix-ups:
   - Move to clkdev_create() API; intel_quark_i2c_gpio
   - Complete re-write of TI's TPS65912 Power Management IC (PMIC)
   - Remove unnecessary function argument; axp20x
   - Separate out bus related code; axp20x
   - Coding Style changes; axp20x
   - Allow more drivers to be compiled as modules
   - Work around false positive 'used uninitialised' warning; db8500-prcmu

  Bug Fixes:
   - Remove do_div(); fsl-imx25-gcq
   - Fix driver init when built-in; tps65010
   - Fix clock-unregister leak; intel-lpss"

* tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (53 commits)
  mfd: intel-lpss: Pass I2C configuration via properties on BXT
  mfd: imx6sx: Add PCIe register definitions for iomuxc gpr
  mfd: ipaq-micro: Use __maybe_unused to hide pm functions
  mfd: max77686: Add max77802 to I2C device ID table
  mfd: max77686: Export OF module alias information
  mfd: max77686: Allow driver to be built as a module
  mfd: stmpe: Add the proper PWM resources
  mfd: tps65090: Set regmap config reg counts properly
  mfd: syscon: Return ENOTSUPP instead of ENOSYS when disabled
  mfd: as3711: Set regmap config reg counts properly
  mfd: rc5t583: Set regmap config reg counts properly
  gpio: tps65086: Add GPO driver for the TPS65086 PMIC
  mfd: mt6397: Add platform device ID table
  mfd: da9063: Fix missing volatile registers in the core regmap_range volatile lists
  mfd: mt6397: Add MT6323 support to MT6397 driver
  mfd: mt6397: Add support for different Slave types
  mfd: mt6397: int_con and int_status may vary in location
  dt-bindings: mfd: Add bindings for the MediaTek MT6323 PMIC
  mfd: da9062: Fix missing volatile registers in the core regmap_range volatile lists
  mfd: Add documentation for ACT8945A DT bindings
  ...
2016-03-18 10:15:11 -07:00
Arnd Bergmann a7e4631772 mfd: db8500: Avoid uninitialized variable reference
The prcmu_config_clkout() function ensures that the 'clkout' argument
can only be '0' or '1' using an appropriate BUG_ON(), so the compiler
should know that the div_mask, mask, and bits variables are always
initialized later on. However, it doesn't understand this in gcc-5.2
and produces a false positive warning instead:

drivers/mfd/db8500-prcmu.c: In function 'prcmu_config_clkout':
drivers/mfd/db8500-prcmu.c:762:10: error: 'div_mask' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  if (val & div_mask) {
          ^
drivers/mfd/db8500-prcmu.c:769:13: error: 'mask' may be used uninitialized in this function [-Werror=maybe-uninitialized]
    if ((val & mask & ~div_mask) != bits) {
             ^
drivers/mfd/db8500-prcmu.c:757:7: error: 'bits' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Replacing the switch() statement with an equivalent if() lets
gcc figure this out reliably and avoids the warnings.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-03-16 08:50:16 +00:00
Arnd Bergmann 26716ce124 thermal: allow u8500-thermal driver to be a module
When the thermal subsystem is a loadable module, the u8500 driver
fails to build:

drivers/thermal/built-in.o: In function `db8500_thermal_probe':
db8500_thermal.c:(.text+0x96c): undefined reference to `thermal_zone_device_register'
drivers/thermal/built-in.o: In function `db8500_thermal_work':
db8500_thermal.c:(.text+0xab4): undefined reference to `thermal_zone_device_update'

This changes the symbol to a tristate, so Kconfig can track the
dependency correctly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2016-02-09 14:18:23 -08:00
Rob Herring 9bd09f345e mfd: Kill off set_irq_flags usage
set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-11 15:09:01 +01:00
Krzysztof Kozlowski 7ce7b26f84 mfd: Constify regmap and irq configuration data
Constify in various drivers configuration data which is not modified:
 - regmap_irq_chip,
 - individual regmap_irq's in array,
 - regmap_config,
 - irq_domain_ops,

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-06-22 12:25:01 +01:00
Rickard Strandqvist 1ae68f95de mfd: db8500-prcmu: Remove unused function
Remove the function prcmu_get_boot_status() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-01-22 15:55:51 +00:00
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00
Lee Jones 6bdf891a17 mfd: db8500-prcmu: Provide sane error path values
Also rid superfluous gotos and label.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-25 16:18:50 +00:00
Pramod Gurav 51a7e02bb6 mfd: db8500-prcmu: Check return of devm_ioremap for error
Error check around return value of devm_ioremap is missing. Add the same
to avoid NULL pointer dereference.

Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-25 16:18:49 +00:00
Wolfram Sang 78a835416a mfd: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:20:53 +02:00
Paul Bolle 23b02519aa mfd: db8500-prcmu: Remove check for CONFIG_DBX500_PRCMU_DEBUG
A check for CONFIG_DBX500_PRCMU_DEBUG was added in v3.6. But there's no
Kconfig symbol DBX500_PRCMU_DEBUG. So remove this check.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:53 +01:00
Krzysztof Kozlowski 5785a97e3d mfd: db8500-prcmu: Make mfd_cell array const
mfd_add_devices() expects array of struct mfd_cell to be const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:33 +01:00
Stratos Karafotis fdb56c45a2 mfd: db8500-prcmu: Use cpufreq_for_each_entry macro for iteration
The cpufreq core now supports the cpufreq_for_each_entry macro helper
for iteration over the cpufreq_frequency_table, so use it.

It should have no functional changes.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-30 00:06:34 +02:00
Linus Walleij f864c46aae mfd: dbx500/abx500: root out hardcoded IRQ assignments
The DBx500 and ABx500 should be getting their IRQs from the
device tree and nowhere else. Get rid of all the static assignments
everywhere, delete it from the driver, platform data and the
board files in one swift strike.

Lots of cross-dependencies in the MFD drivers for PRCMU and
AB8500 makes it necessary to strike everywhere at once to
eradicate IRQs passed as resources and platform data to the left
and right around the platform.

Cc: Mark Brown <broonie@kernel.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-04 08:58:11 +08:00
Geert Uytterhoeven 5ac98553af mfd: Constify struct mfd_cell where possible
As of commit 03e361b25e ("mfd: Stop setting
refcounting pointers in original mfd_cell arrays"), the "cell" parameter of
mfd_add_devices() is "const" again. Hence make all cell data passed to
mfd_add_devices() const where possible.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-06 09:13:29 +00:00
Lee Jones 58092dc4df mfd: dbx500: Remove any mention of the BML8580CLK
The platform which it pertains to is no longer supported and is actually
causing some confusion in the new common clock implementation. A recent
patch removed its use in the clock driver, let's take out the definitions
too.

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-26 11:04:16 +02:00
Linus Torvalds 8de4651abe For the 3.12 merge window we have one new driver for the DA9063 PMIC
from Dialog Semiconductor.
 
 Besides that driver we also have:
 
 - Device tree support for the s2mps11 driver
 
 - More devm_* conversion for the pm8921, max89xx, menelaus, tps65010,
   wl1273 and pcf50633-adc drivers.
 
 - A conversion to threaded IRQ and IRQ domain for the twl6030 driver.
 
 - A fairly big update for the rtsx driver: Better power saving support,
   better vendor settings handling, and a few fixes.
 
 - Support for a couple more boards (COMe-bHL6 and COMe-cTH6) for the
   Kontron driver.
 
 - A conversion to the dev_get_platdata() API for all MFD drivers.
 
 - A removal of non-DT (legacy) support for the twl6040 driver.
 
 - A few fixes and additions (Mic detect level) to the wm5110 register tables.
 
 - Regmap support for the davinci_voicecodec driver.
 
 - The usual bunch of minor cleanups and janitorial fixes.
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Merge tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next

Pull MFD (multi-function device) updates from Samuel Ortiz:
 "For the 3.12 merge window we have one new driver for the DA9063 PMIC
  from Dialog Semiconductor.

  Besides that driver we also have:

   - Device tree support for the s2mps11 driver

   - More devm_* conversion for the pm8921, max89xx, menelaus, tps65010,
     wl1273 and pcf50633-adc drivers.

   - A conversion to threaded IRQ and IRQ domain for the twl6030 driver.

   - A fairly big update for the rtsx driver: Better power saving
     support, better vendor settings handling, and a few fixes.

   - Support for a couple more boards (COMe-bHL6 and COMe-cTH6) for the
     Kontron driver.

   - A conversion to the dev_get_platdata() API for all MFD drivers.

   - A removal of non-DT (legacy) support for the twl6040 driver.

   - A few fixes and additions (Mic detect level) to the wm5110 register
     tables.

   - Regmap support for the davinci_voicecodec driver.

   - The usual bunch of minor cleanups and janitorial fixes"

* tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (81 commits)
  mfd: ucb1x00-core: Rewrite ucb1x00_add_dev()
  mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for event name
  mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for sysfs
  mfd: timberdale: Use module_pci_driver
  mfd: timberdale: Remove redundant break
  mfd: timberdale: Staticize local variables
  mfd: ab8500-debugfs: Staticize local variables
  mfd: db8500-prcmu: Staticize clk_mgt
  mfd: db8500-prcmu: Use ANSI function declaration
  mfd: omap-usb-host: Staticize usbhs_driver_name
  mfd: 88pm805: Fix potential NULL pdata dereference
  mfd: 88pm800: Fix potential NULL pdata dereference
  mfd: twl6040: Use regmap for register cache
  mfd: davinci_voicecodec: Provide a regmap for register I/O
  mfd: davinci_voicecodec: Remove unused read and write functions
  mmc: memstick: rtsx: Modify copyright comments
  mmc: rtsx: Clear SD_CLK toggle enable bit if switching voltage fail
  mfd: mmc: rtsx: Change default tx phase
  mfd: pcf50633-adc: Use devm_*() functions
  mfd: rtsx: Copyright modifications
  ...
2013-09-07 20:14:19 -07:00
Sachin Kamat 6746f2321c mfd: db8500-prcmu: Staticize clk_mgt
clk_mgt is used only in this file. Make it static.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02 10:22:31 +01:00