Linux-ACPI Archive on lore.kernel.org
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From: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>,
	Robert Moore <robert.moore@intel.com>,
	Erik Schmauss <erik.schmauss@intel.com>,
	Jacek Anaszewski <jacek.anaszewski@gmail.com>,
	Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
	Thierry Reding <thierry.reding@gmail.com>
Cc: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>,
	linux-acpi@vger.kernel.org, devel@acpica.org,
	linux-leds@vger.kernel.org, linux-pwm@vger.kernel.org,
	linux-kernel@vger.kernel.org, nv@vosn.de
Subject: [PATCH v2 0/3] PWM framework: add support referencing PWMs from ACPI
Date: Wed, 12 Jun 2019 10:36:05 +0200
Message-ID: <cover.1560327219.git.nikolaus.voss@loewensteinmedical.de> (raw)

As described in Documentation/firmware-guide/acpi/gpio-properties.rst a
GPIO can be referenced from ACPI ASL _DSD with the "gpios"-property of the
form:

  Package () { "gpios", Package () { ref, index, pin, active_low }}

The second patch of this series adds support for specifing a PWM
reference in ASL of the form

  Package () { "pwms", Package () { ref, index, pwm-period [, pwm flags]}}

The first patch of this series is necessary to resolve the "ref" in ASL
if the table has been loaded by efivar_ssdt_load() or configfs.

The third patch of this series makes leds-pwm use the ACPI-enabled
PWM framework.

v2:
- fixes by Pavel Machek and Dan Murphy

Nikolaus Voss (3):
  ACPI: Resolve objects on host-directed table loads
  PWM framework: add support referencing PWMs from ACPI
  leds-pwm.c: support ACPI via firmware-node framework

 drivers/acpi/acpi_configfs.c   |   6 +-
 drivers/acpi/acpica/tbxfload.c |  11 ++++
 drivers/leds/leds-pwm.c        |  45 +++++++------
 drivers/pwm/core.c             | 113 +++++++++++++++++++++++++++++++++
 include/linux/pwm.h            |   9 +++
 5 files changed, 161 insertions(+), 23 deletions(-)

-- 
2.17.1


             reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-12  8:36 Nikolaus Voss [this message]
2019-06-12  8:36 ` [PATCH v2 1/3] ACPI: Resolve objects on host-directed table loads Nikolaus Voss
2019-06-14  9:12   ` Rafael J. Wysocki
2019-06-14  9:25     ` Nikolaus Voss
2019-06-14 15:35       ` Moore, Robert
2019-06-17  6:24         ` Nikolaus Voss
2019-06-17 21:18           ` Moore, Robert
2019-06-18  9:21             ` Nikolaus Voss
2019-06-18 19:35               ` Moore, Robert
2019-06-18 20:22               ` Moore, Robert
2019-06-18 20:24               ` Moore, Robert
2019-06-18 20:31               ` Moore, Robert
2019-06-19  9:31                 ` Nikolaus Voss
2019-06-19 15:59                   ` Moore, Robert
2019-06-20  6:49                     ` Nikolaus Voss
2019-06-22  9:04                       ` Rafael J. Wysocki
2019-06-12  8:36 ` [PATCH v2 2/3] PWM framework: add support referencing PWMs from ACPI Nikolaus Voss
2019-06-12  8:36 ` [PATCH v2 3/3] leds-pwm.c: support ACPI via firmware-node framework Nikolaus Voss
2019-06-21 11:01   ` Pavel Machek

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