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Message-ID: <20221123061635.32025-1-billy_tsai@aspeedtech.com>
Date: Wed, 23 Nov 2022 14:16:30 +0800
From: Billy Tsai <billy_tsai@...eedtech.com>
To: <jdelvare@...e.com>, <linux@...ck-us.net>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <joel@....id.au>,
<andrew@...id.au>, <lee@...nel.org>, <thierry.reding@...il.com>,
<u.kleine-koenig@...gutronix.de>, <corbet@....net>,
<p.zabel@...gutronix.de>, <billy_tsai@...eedtech.com>,
<linux-hwmon@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-aspeed@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
<linux-pwm@...r.kernel.org>, <linux-doc@...r.kernel.org>
Subject: [v4 0/5] Support pwm/tach driver for aspeed ast26xx
Unlike the old design that the register setting of the TACH should based
on the configure of the PWM. In ast26xx, the dependency between pwm and
tach controller is eliminated and becomes a separate hardware block. One
is used to provide pwm output and another is used to monitor the frequency
of the input. Therefore, this patch serials implements them by writing the
two driver "pwm-aspeed-ast2600.c" and "tach-aspeed-ast2600.c". The former
is following the pwm subsystem which can apply the existed driver to
controller the fan(pwm-fan.c), beeper(pwm-beeper.c) and so on. The latter
is following the sysfs interface of hwmon to creat the node for fan
monitor.
Changes since v3:
- pwm
- Remove unnecessary include header
- Fix warning Prefer "GPL" over "GPL v2"
- tach:
- Remove the paremeter min_rpm and max_rpm and return the tach value
directly without any polling or delay.
- Fix warning Prefer "GPL" over "GPL v2"
- dt-binding:
- Replace underscore in node names with dashes
- Split per subsystem
Changes since v2:
- pwm:
- Use devm_* api to simplify the error cleanup
- Fix the multi-line alignment problem
- tach:
- Add tach-aspeed-ast2600 to index.rst
- Fix the multi-line alignment problem
- Remove the tach enable/disable when read the rpm
- Fix some coding format issue
Changes since v1:
- tach:
- Add the document tach-aspeed-ast2600.rst
- Use devm_* api to simplify the error cleanup.
- Change hwmon register api to devm_hwmon_device_register_with_info
Billy Tsai (5):
dt-bindings: mfd: Add aspeed pwm-tach binding
dt-bindings: pwm: Add bindings for aspeed pwm controller
dt-bindings: hwmon: Add bindings for aspeed tach controller
pwm: Add Aspeed ast2600 PWM support
hwmon: Add Aspeed ast2600 TACH support
.../bindings/hwmon/aspeed,ast2600-tach.yaml | 36 ++
.../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 73 ++++
.../bindings/pwm/aspeed,ast2600-pwm.yaml | 54 +++
Documentation/hwmon/index.rst | 1 +
Documentation/hwmon/tach-aspeed-ast2600.rst | 24 ++
drivers/hwmon/Kconfig | 9 +
drivers/hwmon/Makefile | 1 +
drivers/hwmon/tach-aspeed-ast2600.c | 399 ++++++++++++++++++
drivers/pwm/Kconfig | 10 +
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-aspeed-ast2600.c | 318 ++++++++++++++
11 files changed, 926 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml
create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
create mode 100644 Documentation/hwmon/tach-aspeed-ast2600.rst
create mode 100644 drivers/hwmon/tach-aspeed-ast2600.c
create mode 100644 drivers/pwm/pwm-aspeed-ast2600.c
--
2.25.1
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