Commit Graph

35 Commits

Author SHA1 Message Date
Johan Hovold 85e9b13cbb mfd: twl6040: Fix child-node lookup
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.

To make things worse, the parent node was prematurely freed, while the
child node was leaked.

Note that the CONFIG_OF compile guard can be removed as
of_get_child_by_name() provides a !CONFIG_OF implementation which always
fails.

Cc: stable <stable@vger.kernel.org>     # 3.5
Fixes: 37e13cecaa ("mfd: Add support for Device Tree to twl6040")
Fixes: ca2cad6ae3 ("mfd: Fix twl6040 build failure")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2017-11-29 16:29:36 +00:00
Peter Ujfalusi 0133d32346 mfd: twl6040: Register child device for twl6040-pdmclk
The McPDM in OMAP4/5 is using the pdmclk from twl6040 as functional clock.
The twl6040-pdmclk driver provides a clock which can be used to make sure
that the pdmclk is active when the McPDM is in use.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04 15:48:05 +01:00
Peter Ujfalusi c78cb17867 mfd: twl6040: The chip does not support bulk access
Bulk access is not working with twl6040, we need to use single register
access. Bulk access would happen when we try to sync the regcache after
power on.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04 15:48:03 +01:00
Peter Ujfalusi 0a58da1e2f mfd: twl6040: Handle mclk used for HPPLL and optional internal clock source
On some boards, like omap5-uevm the MCLK is gated by default and in order
to be able to use the High performance modes of twl6040 it need to be
enabled by SW.
Add support for handling the MCLK source clock via CCF.
At the same time lower the print priority of the notification that the 32K
clock is not provided and it is not going to be handled by the driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-06-29 10:16:43 +01:00
Javier Martinez Canillas d6441dc5ce mfd: twl6040: Disable and unprepare clk32k in twl6040_power() error path
The clk32k clock is prepared and enabled in twl6040_power() but the clock
is left enabled in case of an error while it should be disable/unprepared.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-05-09 08:23:52 +01:00
Javier Martinez Canillas 32852bcab2 mfd: twl6040: Check clk_prepare_enable() return value in twl6040_power()
The clk_prepare_enable() function can fail so check the return
value and propagate the error in case of a failure.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-05-09 08:23:45 +01:00
Tony Lindgren 75c08f17ec mfd: twl6040: Fix deferred probe handling for clk32k
Commit 68bab8662f ("mfd: twl6040: Optional clk32k clock handling")
added clock handling for the 32k clock from palmas-clk. However, that
patch did not consider a typical situation where twl6040 is built-in,
and palmas-clk is a loadable module like we have in omap2plus_defconfig.

If palmas-clk is not loaded before twl6040 probes, we will get a
"clk32k is not handled" warning during booting. This means that any
drivers relying on this clock will mysteriously fail, including
omap5-uevm WLAN and audio.

Note that for WLAN, we probably should also eventually get
the clk32kgaudio for MMC3 directly as that's shared between
audio and WLAN SDIO at least for omap5-uevm. It seems the
WLAN chip cannot get it as otherwise MMC3 won't get properly
probed.

Fixes: 68bab8662f ("mfd: twl6040: Optional clk32k clock handling")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-10-26 14:48:56 +00:00
Linus Torvalds abebcdfb64 sound updates for 4.3-rc1
There are little changes in core part, but lots of development are
 found in drivers, especially ASoC.  The diffstat shows regmap-
 related changes for a slight API additions / changes, and that's all.
 
 Looking at the code size statistics, the most significant addition
 is for Intel Skylake.  (Note that SKL support is still underway, the
 codec driver is missing.)  Also STI controller driver is a major
 addition as well as a few new codec drivers.
 
 In HD-audio side, there are fewer changes than the past.  The
 noticeable change is the support of ELD notification from i915
 graphics driver.  Thus this pull request carries a few changes in
 drm/i915.
 
 Other than that, USB-audio got a rewrite of runtime PM code.  It
 was initiated by lockdep warning, but resulted in a good cleanup in
 the end.
 
 Below are the highlights:
 
 Common:
 - Factoring out of AC'97 reset code from ASoC into the core helper
 - A few regmap API extensions (in case it's not pulled yet)
 
 ASoC:
 - New drivers for Cirrus CS4349, GTM601, InvenSense ICS43432, Realtek
   RT298 and ST STI controllers
 - Machine drivers for Rockchip systems with MAX98090 and RT5645 and
   RT5650
 - Initial driver support for Intel Skylake devices
 - Lots of rsnd cleanup and enhancements
 - A few DAPM fixes and cleanups
 - A large number of cleanups in various drivers (conversion and
   standardized to regmap, component) mostly by Lars-Peter and Axel
 
 HD-audio:
 - Extended HD-audio core for Intel Skylake controller support
 - Quirks for Dell headsets, Alienware 15
 - Clean up of pin-based quirk tables for Realtek codecs
 - ELD notifier implenetation for Intel HDMI/DP
 
 USB-audio:
 - Refactor runtime PM code to make lockdep happier
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Merge tag 'sound-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "There are little changes in core part, but lots of development are
  found in drivers, especially ASoC.  The diffstat shows regmap-related
  changes for a slight API additions / changes, and that's all.

  Looking at the code size statistics, the most significant addition is
  for Intel Skylake.  (Note that SKL support is still underway, the
  codec driver is missing.) Also STI controller driver is a major
  addition as well as a few new codec drivers.

  In HD-audio side, there are fewer changes than the past.  The
  noticeable change is the support of ELD notification from i915
  graphics driver.  Thus this pull request carries a few changes in
  drm/i915.

  Other than that, USB-audio got a rewrite of runtime PM code.  It was
  initiated by lockdep warning, but resulted in a good cleanup in the
  end.

  Below are the highlights:

  Common:
   - Factoring out of AC'97 reset code from ASoC into the core helper
   - A few regmap API extensions (in case it's not pulled yet)

  ASoC:
   - New drivers for Cirrus CS4349, GTM601, InvenSense ICS43432, Realtek
     RT298 and ST STI controllers
   - Machine drivers for Rockchip systems with MAX98090 and RT5645 and
     RT5650
   - Initial driver support for Intel Skylake devices
   - Lots of rsnd cleanup and enhancements
   - A few DAPM fixes and cleanups
   - A large number of cleanups in various drivers (conversion and
     standardized to regmap, component) mostly by Lars-Peter and Axel

  HD-audio:
   - Extended HD-audio core for Intel Skylake controller support
   - Quirks for Dell headsets, Alienware 15
   - Clean up of pin-based quirk tables for Realtek codecs
   - ELD notifier implenetation for Intel HDMI/DP

  USB-audio:
   - Refactor runtime PM code to make lockdep happier"

* tag 'sound-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (411 commits)
  drm/i915: Add locks around audio component bind/unbind
  drm/i915: Drop port_mst_index parameter from pin/eld callback
  ALSA: hda - Fix missing inline for dummy snd_hdac_set_codec_wakeup()
  ALSA: hda - Wake the codec up on pin/ELD notify events
  ALSA: hda - allow codecs to access the i915 pin/ELD callback
  drm/i915: Call audio pin/ELD notify function
  drm/i915: Add audio pin sense / ELD callback
  ASoC: zx296702-i2s: Fix resource leak when unload module
  ASoC: sti_uniperif: Ensure component is unregistered when unload module
  ASoC: au1x: psc-i2s: Convert to use devm_ioremap_resource
  ASoC: sh: dma-sh7760: Convert to devm_snd_soc_register_platform
  ASoC: spear_pcm: Use devm_snd_dmaengine_pcm_register to fix resource leak
  ALSA: fireworks/bebob/dice/oxfw: fix substreams counting at vmalloc failure
  ASoC: Clean up docbook warnings
  ASoC: txx9: Convert to devm_snd_soc_register_platform
  ASoC: pxa: Convert to devm_snd_soc_register_platform
  ASoC: nuc900: Convert to devm_snd_soc_register_platform
  ASoC: blackfin: Convert to devm_snd_soc_register_platform
  ASoC: au1x: Convert to devm_snd_soc_register_platform
  ASoC: qcom: Constify asoc_qcom_lpass_cpu_dai_ops
  ...
2015-09-04 11:46:02 -07:00
Krzysztof Kozlowski 0e777366fb mfd: Drop owner assignment from i2c_drivers
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-11 15:08:48 +01:00
Nariman Poushin 8019ff6cfc regmap: Use reg_sequence for multi_reg_write / register_patch
Separate the functionality using sequences of register writes from the
functions that take register defaults. This change renames the arguments
in order to support the extension of reg_sequence to take an optional
delay to be applied after any given register in a sequence is written.
This avoids adding an int to all register defaults, which could
substantially increase memory usage for regmaps with large default tables.

This also updates all the clients of multi_reg_write/register_patch.

Signed-off-by: Nariman Poushin <nariman@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 22:02:55 +01:00
Axel Lin ba867bc60a mfd: twl6040: Remove wrong and unneeded "platform:twl6040" modalias
This is a I2C driver, so it's wrong to use platform prefix for the
modalias. We have all needed i2c aliases coming form MODULE_DEVICE_TABLE,
so let's remove the wrong and unneeded "platform:twl6040" modalias.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-30 12:39:22 +01:00
Krzysztof Kozlowski de1e23f834 mfd: twl6040: Constify struct regmap_config and reg_default array
The regmap_config struct may be const because it is not modified by the
driver and regmap_init() accepts pointer to const. Make array of
struct reg_default const as well.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-01-22 16:03:50 +00:00
Julia Lawall f2b8678161 mfd: twl6040: Fix error return code
Convert a zero return value on error to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:37 +01:00
Lee Jones c06f308aa3 mfd: twl6040: Fix 'insert space after ','', error
This is part of an effort to clean-up the MFD subsystem.

ERROR: space required after that ',' (ctx:VxO)
+                                 0, &twl6040_irq_chip,&twl6040->irq_data);
                                                      ^

ERROR: space required before that '&' (ctx:OxV)
+                                 0, &twl6040_irq_chip,&twl6040->irq_data);
                                                       ^

total: 2 errors, 0 warnings, 816 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-22 13:17:07 +01:00
Peter Ujfalusi ac8320c471 mfd: twl6040: Correct HPPLL configuration for 19.2 and 38.4 MHz mclk
When the MCLK is 19.2 or 38.4 MHz the HPPLL need to be enabled and can be
put in bypass mode.
This will fix HPPLL use on boards with 19.2MHz mclk.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:28 +01:00
Peter Ujfalusi 006cea3aec mfd: twl6040: Move register patching earlier in probe
Make sure that we patch the ACCCTL register as the first thing when the
driver loads, thus configuring I2C fast mode and i2c access for dual access
registers.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:21 +01:00
Peter Ujfalusi 68bab8662f mfd: twl6040: Optional clk32k clock handling
In certain boards the source for the clk32k clock can be gated. In these
boards the clk32k clock can be provided to the driver and it is going to be
enabled/disabled when it is needed.
If the clk32k clock is not provided the driver will assume that it is always
running.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:20 +01:00
Peter Ujfalusi 11e38e11af mfd: twl6040: Select i2c fast mode as default with regmap patch
All boards using twl6040 configures the i2c bus to 400KHz. While twl6040's
defaults to normal mode (100KHz). So far twl6040 has no problem with i2c
communication in this configuration it is safer to select fast i2c mode.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:19 +01:00
Peter Ujfalusi 02d02728ea mfd: twl6040: Clear the interrupt ID register before requesting IRQ
If for some reason the boot loader enabled the audpwron GPIO we will have
pending IRQs to be handled. This seams to break twl6040 for some reason
leading to non working i2c communication (i2c timeouts). Clearing the INTID
register after we requested the audpwron GPIO (and set it to low) will
ensure that the chip will operate normally in this case as well.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:19 +01:00
Florian Vaussard 89d6899830 mfd: twl6040: Check for error when reading revision register
We may have an error when reading the revision register, so check for
the returned value.

Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-19 08:58:27 +00:00
Florian Vaussard f8935e1cfc mfd: twl6040: Remove duplicate register write
When probing, regmap_register_patch() will bypass the cache and perform
i2c writes for the given patches. It is thus unnecessary to manually set
the TWL6040_REG_ACCCTL register just before, as it will be done when
registering the twl6040_patch.

Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-19 08:58:27 +00:00
Wei Yongjun adc01fbd90 mfd: twl6040: Fix sparse non static symbol warning
Fixes the following sparse warning:

drivers/mfd/twl6040.c:89:20: warning:
 symbol 'twl6040_patch' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:56 +00:00
Peter Ujfalusi c7f9129d22 mfd: twl6040: reg_defaults support for regmap
Add reg_defaults to regmap and at the same time implement proper power
state handling with using regcache_cache_only(), regcache_sync() and
regcache_mark_dirty().

This will make sure that we do not need to do restore operations in child
drivers anymore.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-12-19 17:01:11 +00:00
Samuel Ortiz 8df5a1ba67 mfd-lee-3.13-1
MFD patches due for v3.13.
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Merge tag 'mfd-lee-3.13-1' of git://git.linaro.org/people/ljones/mfd

mfd-lee-3.13-1

MFD patches due for v3.13.
2013-10-25 11:03:48 +02:00
Wolfram Sang 501d609abe mfd: twl6040: Remove obsolete cleanup for i2c clientdata
A few new i2c-drivers came into the kernel which clear the clientdata-pointer
on exit or error. This is obsolete meanwhile, the core will do it.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-10-24 12:08:23 +02:00
Wei Yongjun fc5ee96fef mfd: twl6040: Drop devm_free_irq of devm_ allocated irq
The devm_request_irq function allocates irq that is released
when a driver detaches. Thus, there is no reason to explicitly
call devm_free_irq in probe or remove functions.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-10-23 16:21:19 +01:00
Samuel Ortiz f4388ca7f1 Merge branch 'topic/for-asoc' 2013-09-02 10:31:08 +02:00
Mark Brown c6f39257c9 mfd: twl6040: Use regmap for register cache
Rather then open coding a cache of the vibra control registers use the
regmap cache code.  Also cache the interrupt mask register, providing
a small performance improvement for the interrupt code.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02 10:30:14 +02:00
Peter Ujfalusi ecc8fa1c85 mfd: twl6040: Cleanup in early error handling in probe function
The err: label is not needed we can just return instead of the jump there.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-31 02:02:57 +02:00
Peter Ujfalusi 37aefe9f05 mfd: twl6040: Cosmetic, parameter alignment change
To comply with coding style.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-31 02:02:56 +02:00
Peter Ujfalusi df04b6242a mfd: twl6040: Remove support for legacy (pdata) mode
TWL6040 is used only with OMAP4/5 SoCs and they can only boot in in DT mode.
The support for pdata/legacy boot can be removed.

Add TODO comment to the header file that all pdata struct can be removed in
the next merge window (after the sub driver updates are in).

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-31 02:02:55 +02:00
Jingoo Han 990810b035 mfd: twl6040: Use devm_*() functions
Use devm_*() functions to make cleanup paths more simple.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-08 17:25:27 +02:00
Greg Kroah-Hartman 612b95cd79 Drivers: mfd: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:14 -08:00
Sachin Kamat dac98aef59 mfd: twl6040: Remove duplicate inclusion of linux/err.h
linux/err.h was included twice.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-21 16:07:56 +01:00
Peter Ujfalusi 210afeecd4 mfd: twl6040: Rename the core driver
After the regmap_irq conversion there is no need to call the driver
as twl6040-core.c since there is only one c file remained.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:23 +01:00