From: Sean Young <sean@mess.org>
To: linux-media@vger.kernel.org, linux-pwm@vger.kernel.org,
"Ivaylo Dimitrov" <ivo.g.dimitrov.75@gmail.com>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: Sean Young <sean@mess.org>
Subject: [PATCH v7 0/4] Improve pwm-ir-tx precision
Date: Mon, 11 Dec 2023 08:24:51 +0000 [thread overview]
Message-ID: <cover.1702282806.git.sean@mess.org> (raw)
The pwm-ir-tx driver has to turn the pwm signal on and off, and suffers
from delays as this is done in process context. Make this work in atomic
context.
changes:
v7:
- Thierry Reding review comments
- Minor cleanups
- rebase
v6:
- Rename pwm_apply_cansleep() to pwm_apply_might_sleep()
- rebase
v5:
- Use dev_err_probe() as Uwe suggested
- rebase
v4:
- Split out the pwm_apply_state() rename into seperate commit
- Atomic pwm function is called pwm_apply_atomic() and sleeping
counterpart pwm_apply_cansleep()
- Fix commit messages
v3:
- Renamed pwm_apply_state() to pwm_apply_cansleep()
- Moved pwm atomic to struct pwm_chip
- Fixed pwm docs
- Other minor code review comments
v2:
- Simplified the pwm ir tx based on Ivaylo Dimitrov suggestions
- Renamed pwm_can_sleep() to pwm_is_atomic
- Fix sleeping issue in pwm-bcm2835 (clk_get_rate() can sleep)
- use non_block_start() in pwm to check atomic-ness
Sean Young (4):
pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()
pwm: Make it possible to apply PWM changes in atomic context
pwm: bcm2835: Allow PWM driver to be used in atomic context
media: pwm-ir-tx: Trigger edges from hrtimer interrupt context
Documentation/driver-api/pwm.rst | 17 +++-
MAINTAINERS | 2 +-
.../gpu/drm/i915/display/intel_backlight.c | 6 +-
drivers/gpu/drm/solomon/ssd130x.c | 2 +-
drivers/hwmon/pwm-fan.c | 8 +-
drivers/input/misc/da7280.c | 4 +-
drivers/input/misc/pwm-beeper.c | 4 +-
drivers/input/misc/pwm-vibra.c | 8 +-
drivers/leds/leds-pwm.c | 2 +-
drivers/leds/rgb/leds-pwm-multicolor.c | 4 +-
drivers/media/rc/pwm-ir-tx.c | 83 +++++++++++++++++--
drivers/platform/x86/lenovo-yogabook.c | 2 +-
drivers/pwm/core.c | 76 +++++++++++++----
drivers/pwm/pwm-bcm2835.c | 31 ++++---
drivers/pwm/pwm-renesas-tpu.c | 1 -
drivers/pwm/pwm-twl-led.c | 2 +-
drivers/pwm/pwm-vt8500.c | 2 +-
drivers/pwm/sysfs.c | 10 +--
drivers/regulator/pwm-regulator.c | 4 +-
drivers/video/backlight/lm3630a_bl.c | 2 +-
drivers/video/backlight/lp855x_bl.c | 2 +-
drivers/video/backlight/pwm_bl.c | 12 +--
drivers/video/fbdev/ssd1307fb.c | 2 +-
include/linux/pwm.h | 57 +++++++++----
24 files changed, 250 insertions(+), 93 deletions(-)
--
2.43.0
next reply other threads:[~2023-12-11 8:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-11 8:24 Sean Young [this message]
2023-12-11 8:24 ` [PATCH v7 1/4] pwm: Rename pwm_apply_state() to pwm_apply_might_sleep() Sean Young
2023-12-11 14:30 ` Uwe Kleine-König
2023-12-11 8:24 ` [PATCH v7 2/4] pwm: Make it possible to apply PWM changes in atomic context Sean Young
2023-12-11 14:25 ` Uwe Kleine-König
2023-12-11 8:24 ` [PATCH v7 3/4] pwm: bcm2835: Allow PWM driver to be used " Sean Young
2023-12-11 8:24 ` [PATCH v7 4/4] media: pwm-ir-tx: Trigger edges from hrtimer interrupt context Sean Young
2023-12-11 10:45 ` Thierry Reding
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