This contains a number of nice cleanups and improvements for the core
and various drivers as well as a minor tweak to the json-schema device
tree bindings.
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Merge tag 'pwm/for-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"This contains a number of nice cleanups and improvements for the core
and various drivers, as well as a minor tweak to the json-schema
device tree bindings"
* tag 'pwm/for-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
dt-bindings: pwm: Avoid selecting schema on node name match
pwm: img: Use only a single idiom to get a runtime PM reference
pwm: vt8500: Implement .apply() callback
pwm: img: Implement .apply() callback
pwm: twl: Implement .apply() callback
pwm: Restore initial state if a legacy callback fails
pwm: Prevent a glitch for legacy drivers
pwm: Move legacy driver handling into a dedicated function
core:
- add privacy screen support
- move nomodeset option into drm subsystem
- clean up nomodeset handling in drivers
- make drm_irq.c legacy
- fix stack_depot name conflicts
- remove DMA_BUF_SET_NAME ioctl restrictions
- sysfs: send hotplug event
- replace several DRM_* logging macros with drm_*
- move hashtable to legacy code
- add error return from gem_create_object
- cma-helper: improve interfaces, drop CONFIG_DRM_KMS_CMA_HELPER
- kernel.h related include cleanups
- support XRGB2101010 source buffers
ttm:
- don't include drm hashtable
- stop pruning fences after wait
- documentation updates
dma-buf:
- add dma_resv selftest
- add debugfs helpers
- remove dma_resv_get_excl_unlocked
- documentation
- make fences mandatory in dma_resv_add_excl_fence
dp:
- add link training delay helpers
gem:
- link shmem/cma helpers into separate modules
- use dma_resv iteratior
- import dma-buf namespace into gem helper modules
scheduler:
- fence grab fix
- lockdep fixes
bridge:
- switch to managed MIPI DSI helpers
- register and attach during probe fixes
- convert to YAML in several places.
panel:
- add bunch of new panesl
simpledrm:
- support FB_DAMAGE_CLIPS
- support virtual screen sizes
- add Apple M1 support
amdgpu:
- enable seamless boot for DCN 3.01
- runtime PM fixes
- use drm_kms_helper_connector_hotplug_event
- get all fences at once
- use generic drm fb helpers
- PSR/DPCD/LTTPR/DSC/PM/RAS/OLED/SRIOV fixes
- add smart trace buffer (STB) for supported GPUs
- display debugfs entries
- new SMU debug option
- Documentation update
amdkfd:
- IP discovery enumeration refactor
- interface between driver fixes
- SVM fixes
- kfd uapi header to define some sysfs bitfields.
i915:
- support VESA panel backlights
- enable ADL-P by default
- add eDP privacy screen support
- add Raptor Lake S (RPL-S) support
- DG2 page table support
- lots of GuC/HuC fw refactoring
- refactored i915->gt interfaces
- CD clock squashing support
- enable 10-bit gamma support
- update ADL-P DMC fw to v2.14
- enable runtime PM autosuspend by default
- ADL-P DSI support
- per-lane DP drive settings for ICL+
- add support for pipe C/D DMC firmware
- Atomic gamma LUT updates
- remove CCS FB stride restrictions on ADL-P
- VRR platform support for display 11
- add support for display audio codec keepalive
- lots of display refactoring
- fix runtime PM handling during PXP suspend
- improved eviction performance with async TTM moves
- async VMA unbinding improvements
- VMA locking refactoring
- improved error capture robustness
- use per device iommu checks
- drop bits stealing from i915_sw_fence function ptr
- remove dma_resv_prune
- add IC cache invalidation on DG2
nouveau:
- crc fixes
- validate LUTs in atomic check
- set HDMI AVI RGB quant to full
tegra:
- buffer objects reworks for dma-buf compat
- NVDEC driver uAPI support
- power management improvements
etnaviv:
- IOMMU enabled system support
- fix > 4GB command buffer mapping
- close a DoS vector
- fix spurious GPU resets
ast:
- fix i2c initialization
rcar-du:
- DSI output support
exynos:
- replace legacy gpio interface
- implement generic GEM object mmap
msm:
- dpu plane state cleanup in prep for multirect
- dpu debugfs cleanups
- dp support for sc7280
- a506 support
- removal of struct_mutex
- remove old eDP sub-driver
anx7625:
- support MIPI DSI input
- support HDMI audio
- fix reading EDID
lvds:
- fix bridge DT bindings
megachips:
- probe both bridges before registering
dw-hdmi:
- allow interlace on bridge
ps8640:
- enable runtime PM
- support aux-bus
tx358768:
- enable reference clock
- add pulse mode support
ti-sn65dsi86:
- use regmap bulk write
- add PWM support
etnaviv:
- get all fences at once
gma500:
- gem object cleanups
kmb:
- enable fb console
radeon:
- use dma_resv_wait_timeout
rockchip:
- add DSP hold timeout
- suspend/resume fixes
- PLL clock fixes
- implement mmap in GEM object functions
- use generic fbdev emulation
sun4i:
- use CMA helpers without vmap support
vc4:
- fix HDMI-CEC hang with display is off
- power on HDMI controller while disabling
- support 4K@60Hz modes
- support 10-bit YUV 4:2:0 output
vmwgfx:
- fix leak on probe errors
- fail probing on broken hosts
- new placement for MOB page tables
- hide internal BOs from userspace
- implement GEM support
- implement GL 4.3 support
virtio:
- overflow fixes
xen:
- implement mmap as GEM object function
omapdrm:
- fix scatterlist export
- support virtual planes
mediatek:
- MT8192 support
- CMDQ refinement
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Merge tag 'drm-next-2022-01-07' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"Highlights are support for privacy screens found in new laptops, a
bunch of nomodeset refactoring, and i915 enables ADL-P systems by
default, while starting to add RPL-S support.
vmwgfx adds GEM and support for OpenGL 4.3 features in userspace.
Lots of internal refactorings around dma reservations, and lots of
driver refactoring as well.
Summary:
core:
- add privacy screen support
- move nomodeset option into drm subsystem
- clean up nomodeset handling in drivers
- make drm_irq.c legacy
- fix stack_depot name conflicts
- remove DMA_BUF_SET_NAME ioctl restrictions
- sysfs: send hotplug event
- replace several DRM_* logging macros with drm_*
- move hashtable to legacy code
- add error return from gem_create_object
- cma-helper: improve interfaces, drop CONFIG_DRM_KMS_CMA_HELPER
- kernel.h related include cleanups
- support XRGB2101010 source buffers
ttm:
- don't include drm hashtable
- stop pruning fences after wait
- documentation updates
dma-buf:
- add dma_resv selftest
- add debugfs helpers
- remove dma_resv_get_excl_unlocked
- documentation
- make fences mandatory in dma_resv_add_excl_fence
dp:
- add link training delay helpers
gem:
- link shmem/cma helpers into separate modules
- use dma_resv iteratior
- import dma-buf namespace into gem helper modules
scheduler:
- fence grab fix
- lockdep fixes
bridge:
- switch to managed MIPI DSI helpers
- register and attach during probe fixes
- convert to YAML in several places.
panel:
- add bunch of new panesl
simpledrm:
- support FB_DAMAGE_CLIPS
- support virtual screen sizes
- add Apple M1 support
amdgpu:
- enable seamless boot for DCN 3.01
- runtime PM fixes
- use drm_kms_helper_connector_hotplug_event
- get all fences at once
- use generic drm fb helpers
- PSR/DPCD/LTTPR/DSC/PM/RAS/OLED/SRIOV fixes
- add smart trace buffer (STB) for supported GPUs
- display debugfs entries
- new SMU debug option
- Documentation update
amdkfd:
- IP discovery enumeration refactor
- interface between driver fixes
- SVM fixes
- kfd uapi header to define some sysfs bitfields.
i915:
- support VESA panel backlights
- enable ADL-P by default
- add eDP privacy screen support
- add Raptor Lake S (RPL-S) support
- DG2 page table support
- lots of GuC/HuC fw refactoring
- refactored i915->gt interfaces
- CD clock squashing support
- enable 10-bit gamma support
- update ADL-P DMC fw to v2.14
- enable runtime PM autosuspend by default
- ADL-P DSI support
- per-lane DP drive settings for ICL+
- add support for pipe C/D DMC firmware
- Atomic gamma LUT updates
- remove CCS FB stride restrictions on ADL-P
- VRR platform support for display 11
- add support for display audio codec keepalive
- lots of display refactoring
- fix runtime PM handling during PXP suspend
- improved eviction performance with async TTM moves
- async VMA unbinding improvements
- VMA locking refactoring
- improved error capture robustness
- use per device iommu checks
- drop bits stealing from i915_sw_fence function ptr
- remove dma_resv_prune
- add IC cache invalidation on DG2
nouveau:
- crc fixes
- validate LUTs in atomic check
- set HDMI AVI RGB quant to full
tegra:
- buffer objects reworks for dma-buf compat
- NVDEC driver uAPI support
- power management improvements
etnaviv:
- IOMMU enabled system support
- fix > 4GB command buffer mapping
- close a DoS vector
- fix spurious GPU resets
ast:
- fix i2c initialization
rcar-du:
- DSI output support
exynos:
- replace legacy gpio interface
- implement generic GEM object mmap
msm:
- dpu plane state cleanup in prep for multirect
- dpu debugfs cleanups
- dp support for sc7280
- a506 support
- removal of struct_mutex
- remove old eDP sub-driver
anx7625:
- support MIPI DSI input
- support HDMI audio
- fix reading EDID
lvds:
- fix bridge DT bindings
megachips:
- probe both bridges before registering
dw-hdmi:
- allow interlace on bridge
ps8640:
- enable runtime PM
- support aux-bus
tx358768:
- enable reference clock
- add pulse mode support
ti-sn65dsi86:
- use regmap bulk write
- add PWM support
etnaviv:
- get all fences at once
gma500:
- gem object cleanups
kmb:
- enable fb console
radeon:
- use dma_resv_wait_timeout
rockchip:
- add DSP hold timeout
- suspend/resume fixes
- PLL clock fixes
- implement mmap in GEM object functions
- use generic fbdev emulation
sun4i:
- use CMA helpers without vmap support
vc4:
- fix HDMI-CEC hang with display is off
- power on HDMI controller while disabling
- support 4K@60Hz modes
- support 10-bit YUV 4:2:0 output
vmwgfx:
- fix leak on probe errors
- fail probing on broken hosts
- new placement for MOB page tables
- hide internal BOs from userspace
- implement GEM support
- implement GL 4.3 support
virtio:
- overflow fixes
xen:
- implement mmap as GEM object function
omapdrm:
- fix scatterlist export
- support virtual planes
mediatek:
- MT8192 support
- CMDQ refinement"
* tag 'drm-next-2022-01-07' of git://anongit.freedesktop.org/drm/drm: (1241 commits)
drm/amdgpu: no DC support for headless chips
drm/amd/display: fix dereference before NULL check
drm/amdgpu: always reset the asic in suspend (v2)
drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform
drm/amd/display: Fix the uninitialized variable in enable_stream_features()
drm/amdgpu: fix runpm documentation
amdgpu/pm: Make sysfs pm attributes as read-only for VFs
drm/amdgpu: save error count in RAS poison handler
drm/amdgpu: drop redundant semicolon
drm/amd/display: get and restore link res map
drm/amd/display: support dynamic HPO DP link encoder allocation
drm/amd/display: access hpo dp link encoder only through link resource
drm/amd/display: populate link res in both detection and validation
drm/amd/display: define link res and make it accessible to all link interfaces
drm/amd/display: 3.2.167
drm/amd/display: [FW Promotion] Release 0.0.98
drm/amd/display: Undo ODM combine
drm/amd/display: Add reg defs for DCN303
drm/amd/display: Changed pipe split policy to allow for multi-display pipe split
drm/amd/display: Set optimize_pwr_state for DCN31
...
The PWM on Tegra belongs to the core power domain and we're going to
enable GENPD support for the core domain. Now PWM must be resumed using
runtime PM API in order to initialize the PWM power state. The PWM clock
rate must be changed using OPP API that will reconfigure the power domain
performance state in accordance to the rate. Add runtime PM and OPP
support to the PWM driver.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently there are two very similar approaches in use by this driver:
img_pwm_config() uses pm_runtime_get_sync() and calls
pm_runtime_put_autosuspend() in the error path; img_pwm_enable() calls
pm_runtime_resume_and_get() which already puts the reference in its own
error path.
Align pm_runtime usage and use the same idiom in both locations.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
To eventually get rid of all legacy drivers convert this driver to the
modern world implementing .apply(). This just pushes down a slightly
optimized variant of how legacy drivers are handled in the core.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
To eventually get rid of all legacy drivers convert this driver to the
modern world implementing .apply(). This just pushes down a slightly
optimized variant of how legacy drivers are handled in the core.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
To eventually get rid of all legacy drivers convert this driver to the
modern world implementing .apply(). This just pushes down a slightly
optimized variant of how legacy drivers are handled in the core.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
It is not entirely accurate to go back to the initial state after e.g.
.enable() failed, as .config() still modified the hardware, but this same
inconsistency exists for drivers that implement .apply().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
If a running PWM is reconfigured to disabled calling the ->config()
callback before disabling the hardware might result in a glitch where
the (maybe) new period and duty_cycle are visible on the output before
disabling the hardware.
So handle disabling before calling ->config(). Also exit early in this case
which is possible because period and duty_cycle don't matter for disabled PWMs.
In return however ->config has to be called even if state->period ==
pwm->state.period && state->duty_cycle != pwm->state.duty_cycle because setting
these might have been skipped in the previous call.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
There is no change in behaviour, only some code is moved from
pwm_apply_state to a separate function.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The pwm_ prefix suggests that pwm_busy_wait() is a function provided by
the pwm core. Use the otherwise consistently used driver prefix for this
function, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
When duty-cycle is at full level (100%), the TCNTn and TCMPn registers
needs to be flushed in order to disable the signal. The PWM manual does
not say anything about this, but states that only clearing the TCON
auto-reload bit should be needed, and this seems to be true when the PWM
duty-cycle is not at full level. This can be observed on an Axis
ARTPEC-8, by running:
echo <period> > pwm/period
echo <period> > pwm/duty_cycle
echo 1 > pwm/enable
echo 0 > pwm/enable
Since the TCNTn and TCMPn registers are activated when enabling the PWM
(setting TCON auto-reload bit), and are not touched when disabling the
PWM, the double buffered auto-reload function seems to be still active.
Lowering duty-cycle, and restoring it again in between the enabling and
disabling, makes the disable work since it triggers a reload of the
TCNTn and TCMPn registers.
Fix this by securing a reload of the TCNTn and TCMPn registers when
disabling the PWM and having a full duty-cycle.
Signed-off-by: Mårten Lindahl <marten.lindahl@axis.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: zhaoxiao <long870912@gmail.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Describe better which driver applies to which SoC, to make configuring
kernel for Samsung SoC easier.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
At least some implementations sleep. So mark pwm_apply_state() with a
might_sleep() to make callers aware. In the worst case this uncovers a
valid atomic user, then we revert this patch and at least gained some more
knowledge and then can work on a concept similar to
gpio_get_value/gpio_get_value_cansleep.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Since commit 52eaba4ced ("pwm: atmel: Rework tracking updates pending
in hardware") the driver doesn't make use of mutexes any more, so the
header defining these doesn't need to be included.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The existing pxa driver and the upcoming addition of PWM support in the
TI sn565dsi86 DSI/eDP bridge driver both has a single PWM channel and
thereby a need for a of_xlate function with the period as its single
argument.
Introduce a common helper function in the core that can be used as
of_xlate by such drivers and migrate the pxa driver to use this.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Steev Klimaszewski <steev@kali.org>
Tested-By: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025170925.3096444-1-bjorn.andersson@linaro.org
Switch the driver to support the .get_state() method.
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
[thierry.reding@gmail.com: add missing linux/bitfield.h include]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Current calculation for period and high_width may have 64-bit overflow.
state->period and rate are u64. rate * state->period will overflow.
clk_div = div_u64(rate * state->period, NSEC_PER_SEC)
period = div64_u64(rate * state->period, div);
high_width = div64_u64(rate * state->duty_cycle, div);
This patch is to resolve it by using mul_u64_u64_div_u64().
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Switch the driver to support the .apply() method.
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The clks "main" and "mm" are prepared in .probe() (and unprepared in
.remove()). This results in the clocks being on during suspend which
results in unnecessarily increased power consumption.
Remove the clock operations from .probe() and .remove(). Add the
clk_prepare_enable() in .enable() and the clk_disable_unprepare() in
.disable().
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
[thierry.reding@gmail.com: squashed in fixup patch]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Since some time pwmchip_remove() always returns 0 so the return value
isn't usefull. Now that all callers are converted to ignore its value
the function can be changed to return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of sun4i_pwm_remove()
and considers the device removed anyhow. So returning early results
in a resource leak.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pwm_sifive_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pwm_samsung_remove()
and considers the device removed anyhow. So returning early results
in a resource leak.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of tpu_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of rcar_pwm_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pca9685_pwm_remove()
and considers the device removed anyhow. So returning early results
in a resource leak.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pwm_omap_dmtimer_remove()
and considers the device removed anyhow. So returning early results
in a resource leak.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of mtk_disp_pwm_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pwm_imx_tpm_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pwm_imx_tpm_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of cros_ec_pwm_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of brcmstb_pwm_remove().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of atmel_tcb_pwm_remove()
and considers the device removed anyhow. So returning early results in a
resource leak.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of atmel_hlcdc_pwm_remove()
and considers the device removed anyhow.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
With devm_pwmchip_add() there is no need to explicitly call
pwmchip_remove(), so this call can be dropped from the remove callback.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Linus Torvalds