19 Apr, 2014
1 commit
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shiraz.hashim@st.com email-id doesn't exist anymore as he has left the
company. Replace ST's id with shiraz.linux.kernel@gmail.com.It also updates .mailmap file to fix address for 'git shortlog'.
Signed-off-by: Viresh Kumar
Cc: Shiraz Hashim
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Apr, 2014
1 commit
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…ierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"The legacy HAVE_PWM Kconfig symbol is finally being retired. Thanks a
lot to Sascha Hauer for doing that.Three new drivers are added: Freescale FTM, Cirrus Logic CLPS711X and
Intel Low Power Subsystem.An assortment of fixes and cleanups rounds things off for this release
cycle"* tag 'pwm/for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: pxa: Constify OF match table
pwm: pxa: Fix typo "pwm" -> "PWM"
Revert "pwm: pxa: Use of_match_ptr()"
pwm: add support for Intel Low Power Subsystem PWM
pwm: Add CLPS711X PWM support
pwm: atmel: correct CDTY calculation
pwm: atmel: Fix polarity handling
Documentation: Add device tree bindings for Freescale FTM PWM.
pwm: Add Freescale FTM PWM driver support
pwm: pxa: Use of_match_ptr()
pwm: samsung: Use SIMPLE_DEV_PM_OPS macro
pwm: renesas-tpu: Add dependency on HAS_IOMEM
pwm: Remove obsolete HAVE_PWM Kconfig symbol
01 Apr, 2014
4 commits
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The table is never modified and all OF functions that use it take a
const struct of_device_id *.Signed-off-by: Thierry Reding
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Being an abbreviation, PWM should always be capitalized in prose.
Signed-off-by: Thierry Reding
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This reverts commit 8468949cddcdbb1b1b1bc552aefceb252078ceb1.
The OF match table dummy for non-OF configurations cannot be removed
because it is still used by the pxa_pwm_get_id_dt() function.Signed-off-by: Thierry Reding
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Add support for Intel Low Power I/O subsystem PWM controllers found on
Intel BayTrail SoC.Signed-off-by: Mika Westerberg
Signed-off-by: Chew, Kean Ho
Signed-off-by: Chang, Rebecca Swee Fun
Signed-off-by: Chew, Chiau Ee
Signed-off-by: Thierry Reding
19 Mar, 2014
4 commits
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Add a new driver for the ARM CLPS711X Pulse Width Modulator (PWM) interface.
This CPU contain two 4-bit PWM outputs with constant period, based on CPU
PLL frequency. PWM polarity is determined by hardware by power on reset.Signed-off-by: Alexander Shiyan
Signed-off-by: Thierry Reding -
From the datasheet, the actual duty cycle is:
(period - (1 / clk) * CDTY) / period
This actually correct the polarity of the PWM and solves the issue that
pwm-leds exhibits: when setting a duty cycle of 0 and then disabling a
channel, the level was wrong (1 when the polarity was normal and 0 when
the polarity was inversed).Signed-off-by: Alexandre Belloni
Acked-by: Nicolas Ferre
Signed-off-by: Thierry Reding -
When atmel_pwm_config() calculates and then sets the prescaler, it is
overwriting the channel's CMR register so we are losing the CPOL
configuration.As atmel_pwm_config() is always called before enabling a channel,
inverting the polarity doesn't work.Fix that by reading CMR first and only overwriting the prescaler bits.
Signed-off-by: Alexandre Belloni
Acked-by: Nicolas Ferre
Signed-off-by: Thierry Reding -
The FTM PWM device can be found on Vybrid VF610 Tower and
Layerscape LS-1 SoCs.Signed-off-by: Xiubo Li
Signed-off-by: Alison Wang
Signed-off-by: Jingchang Lu
Reviewed-by: Sascha Hauer
Reviewed-by: Yuan Yao
Signed-off-by: Thierry Reding
26 Feb, 2014
4 commits
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Use of_match_ptr(), because of_match_ptr() returns NULL pointer
when CONFIG_OF is disabled.Signed-off-by: Jingoo Han
Signed-off-by: Thierry Reding -
Use SIMPLE_DEV_PM_OPS macro in order to make the code simpler.
Signed-off-by: Jingoo Han
Signed-off-by: Thierry Reding -
On archs like S390 or um this driver cannot build nor work.
Make it depend on HAS_IOMEM to bypass build failures.drivers/built-in.o: In function `tpu_probe':
drivers/pwm/pwm-renesas-tpu.c:421: undefined reference to `devm_ioremap_resource'Signed-off-by: Richard Weinberger
Signed-off-by: Thierry Reding -
Fix a memory leak in the lp3943_pwm_request_map() error handling path.
Make sure already allocated pwm map memory is freed correctly.
Detected by Coverity: CID 1162829.Signed-off-by: Christian Engelmayer
Acked-by: Milo Kim
Signed-off-by: Thierry Reding
28 Jan, 2014
1 commit
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…ierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"The patches for this release cycle include various enhancements
(device tree support, better compile coverage, ...) for existing
drivers. There is a new driver for Atmel SoCs.Various drivers as well as the sysfs support received minor fixes and
cleanups"* tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: tiecap: Remove duplicate put_sync call
pwm: tiehrpwm: use dev_err() instead of pr_err()
pwm: pxa: remove unnecessary space before tabs
pwm: ep93xx: split module author names
pwm: use seq_puts() instead of seq_printf()
pwm: atmel-pwm: Do not unprepare clock after successful registration
of: Add Atmel PWM controller device tree binding
pwm: atmel-pwm: Add Atmel PWM controller driver
backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
pwm: pca9685: depends on I2C rather than REGMAP_I2C
pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST
pwm: jz4740: Use devm_clk_get()
pwm: jz4740: Pass device to clk_get()
pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro
pwm: pxa: Add device tree support
23 Jan, 2014
1 commit
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Remove duplicate 'pm_runtime_put_sync' in the remove path.
Signed-off-by: Sourav Poddar
Signed-off-by: Thierry Reding
21 Jan, 2014
1 commit
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This is the other of the LP3943 MFD driver.
LP3943 can be used as a PWM generator, up to 2 channels.* Two PWM generators supported
* Supported PWM operations
request, free, config, enable and disable* Pin assignment
A driver data, 'pin_used' is checked when a PWM is requested.
If the output pin is already assigned, then returns as failure.
If the pin is available, 'pin_used' is set.
When the PWM is not used anymore, then it is cleared.
It is defined as unsigned long type for atomic bit operation APIs,
but only LSB 16bits are used because LP3943 has 16 outputs.Signed-off-by: Milo Kim
Acked-by: Thierry Reding
Signed-off-by: Lee Jones
20 Dec, 2013
5 commits
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Use dev_err() instead of pr_err() to provide a better message
to userspace.Signed-off-by: Jingoo Han
Signed-off-by: Thierry Reding -
Remove unnecessary space before tabs in order to fix the following
checkpatch warning.WARNING: please, no space before tabs
Signed-off-by: Jingoo Han
Signed-off-by: Thierry Reding -
Split module author names in order to fix the following
checkpatch warning.WARNING: quoted string split across lines
Signed-off-by: Jingoo Han
Signed-off-by: Thierry Reding -
For a constant format without additional arguments, use seq_puts()
instead of seq_printf(). Also, the following checkpatch warning is
fixed.WARNING: Prefer seq_puts to seq_printf
Signed-off-by: Jingoo Han
Signed-off-by: Thierry Reding -
When the PWM controller is registered successfully, the clock can not
unprepare, so fix it.Signed-off-by: Bo Shen
Signed-off-by: Thierry Reding
17 Dec, 2013
2 commits
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Add a PWM framework driver for the PWM controller found on Atmel SoCs.
Signed-off-by: Bo Shen
Acked-by: Alexandre Belloni
Acked-by: Jean-Christophe PLAGNIOL-VILLARD
[thierry.reding: coding style and other minor cleanups]
Signed-off-by: Thierry Reding -
REGMAP_I2C is not a visible config option.
Thus make PWM_PCA9685 depend on I2c and then select REGMAP_I2C.Signed-off-by: Axel Lin
Acked-by: Steffen Trumtrar
Signed-off-by: Thierry Reding
12 Dec, 2013
3 commits
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This helps increasing build testing coverage.
Cc: Thierry Reding
Cc: linux-pwm@vger.kernel.org
Signed-off-by: Laurent Pinchart
Acked-by: Simon Horman
Signed-off-by: Thierry Reding -
Using the managed version of clk_get() makes the code a bit shorter and the
error paths less complicated.Signed-off-by: Lars-Peter Clausen
Signed-off-by: Thierry Reding -
In preparation to switching the jz4740 clk driver to the common clk framework
make sure to pass the device to clk_get().Signed-off-by: Lars-Peter Clausen
Signed-off-by: Thierry Reding
04 Dec, 2013
2 commits
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Use new ATTRIBUTE_GROUPS macro to reduce the number of lines of code.
Signed-off-by: Axel Lin
Signed-off-by: Thierry Reding -
This patch adds device tree support to the PXA's PWM driver. Nothing
needs to be extracted from the device tree node by the PWM device.
Client devices need only specify the period; the per-chip index is
implicitly zero because one device node must be present for each PWM
output in use. This approach is more convenient due to the wide
variability in the number of PWM channels present across the various PXA
variants, and is made possible by the fact that the register sets for
each PWM channel are segregated from each other. An of_xlate() method
is added to parse this single-cell node. The existing ID table is
reused for the match table data.Tested on a Palm Treo 680 (both platform data and DT cases).
Signed-off-by: Mike Dunn
Signed-off-by: Thierry Reding
01 Nov, 2013
1 commit
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PWM channel data was set to NULL before freeing it. This caused the
following kernel warning while unexporting the channel. Set the channel
data to NULL after freeing it.[ 70.495000] WARNING: CPU: 0 PID: 1 at drivers/base/devres.c:805 pwm_put+0x48/0x80()
[ 70.505000] Modules linked in:
[ 70.505000] CPU: 0 PID: 1 Comm: sh Not tainted 3.12.0-rc6-next-20131024-00012-gd4aec04-dirty #58
[ 70.515000] [] (unwind_backtrace+0x0/0xf4) from [] (show_stack+0x10/0x14)
[ 70.525000] [] (show_stack+0x10/0x14) from [] (dump_stack+0x7c/0xb0)
[ 70.530000] [] (dump_stack+0x7c/0xb0) from [] (warn_slowpath_common+0x6c/0x88)
[ 70.540000] [] (warn_slowpath_common+0x6c/0x88) from [] (warn_slowpath_null+0x1c/0x24)
[ 70.550000] [] (warn_slowpath_null+0x1c/0x24) from [] (pwm_put+0x48/0x80)
[ 70.560000] [] (pwm_put+0x48/0x80) from [] (pwm_unexport_store+0x94/0xac)
[ 70.565000] [] (pwm_unexport_store+0x94/0xac) from [] (sysfs_write_file+0x148/0x1d8)
[ 70.575000] [] (sysfs_write_file+0x148/0x1d8) from [] (vfs_write+0xb4/0x1a0)
[ 70.585000] [] (vfs_write+0xb4/0x1a0) from [] (SyS_write+0x3c/0x78)
[ 70.595000] [] (SyS_write+0x3c/0x78) from [] (ret_fast_syscall+0x0/0x30)Signed-off-by: Sachin Kamat
Reviewed-by: Jingoo Han
Signed-off-by: Thierry Reding
17 Oct, 2013
1 commit
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Remove the non-standard EP93xx PWM driver in drivers/misc and add
a new driver for the PWM controllers on the EP93xx platform based
on the PWM framework.These PWM controllers each support 1 PWM channel with programmable
duty cycle, frequency, and polarity inversion.Signed-off-by: H Hartley Sweeten
Cc: Ryan Mallon
Acked-by: Arnd Bergmann
Acked-by: Greg Kroah-Hartman
Signed-off-by: Thierry Reding
15 Oct, 2013
1 commit
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Since commit ab78029 (drivers/pinctrl: grab default handles from device core),
we can rely on device core for setting the default pins. Compile tested only.Acked-by: Linus Walleij (personally at LCE13)
Signed-off-by: Wolfram Sang
Signed-off-by: Thierry Reding
08 Oct, 2013
7 commits
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The data structure of_match_ptr() protects is always compiled in.
Hence of_match_ptr() is not needed.Signed-off-by: Sachin Kamat
Acked-by: Sascha Hauer
Signed-off-by: Thierry Reding -
The data structure of_match_ptr() protects is always compiled in.
Hence of_match_ptr() is not needed.Signed-off-by: Sachin Kamat
Cc: Alexandre Pereira da Silva
Signed-off-by: Thierry Reding -
The data structure of_match_ptr() protects is always compiled in.
Hence of_match_ptr() is not needed.Signed-off-by: Sachin Kamat
Acked-by: Shawn Guo
Signed-off-by: Thierry Reding -
'of_match_ptr' is defined in linux/of.h. Include it explicitly.
Signed-off-by: Sachin Kamat
Signed-off-by: Thierry Reding -
'of_match_ptr' is defined in linux/of.h. Include it explicitly.
Signed-off-by: Sachin Kamat
Signed-off-by: Thierry Reding -
'of_match_ptr' is defined in linux/of.h. Include it explicitly.
Signed-off-by: Sachin Kamat
Signed-off-by: Thierry Reding -
'of_match_ptr' is defined in linux/of.h. Include it explicitly.
Signed-off-by: Sachin Kamat
Signed-off-by: Thierry Reding
19 Sep, 2013
1 commit
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Use the the tcb counter width to compute the maximum time that can be
represented using the slow clock source instead of the static 16 bit width.Signed-off-by: Boris BREZILLON
Acked-by: Nicolas Ferre
Signed-off-by: Thierry Reding
