linux-toradex.git/drivers/clocksource/timer-ti-dm.c, branch v6.19

clocksource/drivers/timer-ti-dm : Capture functionality for OMAP DM timer

2025-09-23T10:32:40+00:00

Add PWM capture function in DM timer driver.

OMAP DM timer hardware supports capture feature.It can be used to
timestamp events (falling/rising edges) detected on input signal.

Signed-off-by: Gokul Praveen 
Signed-off-by: Daniel Lezcano 
Reviewed-by: Neha Malcom Francis 
Link: https://lore.kernel.org/r/20250812105346.203541-1-g-praveen@ti.com

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43+00:00

The continual trickle of small conversion patches is grating on me, and
is really not helping.  Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:

  /*
   * .remove_new() is a relic from a prototype conversion of .remove().
   * New drivers are supposed to implement .remove(). Once all drivers are
   * converted to not use .remove_new any more, it will be dropped.
   */

This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.

I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.

Then I just removed the old (sic) .remove_new member function, and this
is the end result.  No more unnecessary conversion noise.

Signed-off-by: Linus Torvalds

clocksource/drivers/timer-ti-dm: Don't fail probe if int not found

2024-11-13T12:49:33+00:00

Some timers may not have an interrupt routed to the A53 GIC, but the
timer PWM functionality can still be used by Linux Kernel. Therefore,
do not fail probe if interrupt is not found and ti,timer-pwm exists.

Signed-off-by: Judith Mendez 
Link: https://lore.kernel.org/r/20241011175203.1040568-1-jm@ti.com
Signed-off-by: Daniel Lezcano

clocksource/drivers/timer-ti-dm: Remove an unused field in struct dmtimer

2024-05-10T08:41:52+00:00

In "struct dmtimer", the 'rate' field is unused.
Remove it.

Found with cppcheck, unusedStructMember.

Signed-off-by: Christophe JAILLET 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/c9f7579922c587fce334a1aa9651f3189de7a00b.1714513336.git.christophe.jaillet@wanadoo.fr

clocksource/drivers/timer-ti-dm: Fix make W=n kerneldoc warnings

2023-12-27T14:37:11+00:00

Kernel test robot reports of kerneldoc related warnings that happen with
make W=n for "parameter or member not described".

These were caused by changes to function parameter names with
earlier commits where the kerneldoc parts were not updated.

Fixes: 49cd16bb573e ("clocksource/drivers/timer-ti-dm: Simplify register writes with dmtimer_write()")
Fixes: a6e543f61531 ("clocksource/drivers/timer-ti-dm: Move struct omap_dm_timer fields to driver")
Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202311040403.DzIiBuwU-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202311040606.XL5OcR9O-lkp@intel.com/
Signed-off-by: Tony Lindgren 
Reviewed-by: Randy Dunlap 
Tested-by: Randy Dunlap 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20231114072930.40615-1-tony@atomide.com

drivers/clocksource/timer-ti-dm: Don't call clk_get_rate() in stop function

2023-10-11T08:14:53+00:00

clk_get_rate() might sleep, and that prevents dm-timer based PWM from being
used from atomic context.

Fix that by getting fclk rate in probe() and using a notifier in case rate
changes.

Fixes: af04aa856e93 ("ARM: OMAP: Move dmtimer driver out of plat-omap to drivers under clocksource")
Signed-off-by: Ivaylo Dimitrov 
Reviewed-by: Tony Lindgren 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/1696312220-11550-1-git-send-email-ivo.g.dimitrov.75@gmail.com

clocksource: Explicitly include correct DT includes

2023-08-28T18:30:57+00:00

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Link: https://lore.kernel.org/r/20230714174409.4053843-1-robh@kernel.org
Signed-off-by: Rob Herring

Merge tag 'timers-core-2023-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-04-29T17:24:30+00:00

Pull more timer updates from Thomas Gleixner:
 "Timekeeping and clocksource/event driver updates the second batch:

   - A trivial documentation fix in the timekeeping core

   - A really boring set of small fixes, enhancements and cleanups in
     the drivers code. No new clocksource/clockevent drivers for a
     change"

* tag 'timers-core-2023-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Fix references to nonexistent ktime_get_fast_ns()
  dt-bindings: timer: rockchip: Add rk3588 compatible
  dt-bindings: timer: rockchip: Drop superfluous rk3288 compatible
  clocksource/drivers/ti: Use of_property_read_bool() for boolean properties
  clocksource/drivers/timer-ti-dm: Fix finding alwon timer
  clocksource/drivers/davinci: Fix memory leak in davinci_timer_register when init fails
  clocksource/drivers/stm32-lp: Drop of_match_ptr for ID table
  clocksource/drivers/timer-ti-dm: Convert to platform remove callback returning void
  clocksource/drivers/timer-tegra186: Convert to platform remove callback returning void
  clocksource/drivers/timer-ti-dm: Improve error message in .remove
  clocksource/drivers/timer-stm32-lp: Mark driver as non-removable
  clocksource/drivers/sh_mtu2: Mark driver as non-removable
  clocksource/drivers/timer-ti-dm: Use of_address_to_resource()
  clocksource/drivers/timer-imx-gpt: Remove non-DT function
  clocksource/drivers/timer-mediatek: Split out CPUXGPT timers
  clocksource/drivers/exynos_mct: Explicitly return 0 for shared timer

clocksource/drivers/ti: Use of_property_read_bool() for boolean properties

2023-04-24T14:56:14+00:00

It is preferred to use typed property access functions (i.e.
of_property_read_ functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to to of_property_read_bool().

Signed-off-by: Rob Herring 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20230310144702.1541660-1-robh@kernel.org

clocksource/drivers/timer-ti-dm: Convert to platform remove callback returning void

2023-04-24T14:56:13+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20230313075430.2730803-6-u.kleine-koenig@pengutronix.de