[PATCH 0/2] ZII RAVE platform driver

[PATCH 0/2] ZII RAVE platform driver

[Andrey Smirnov]

Hi everyone,

This patch series is a driver for supervisory processor found on RAVE
series of devices from ZII. Supervisory processor is a PIC
microcontroller connected to various electrical subsystems on RAVE
devices whose firmware implements protocol to command/qery them.

I originally submitted this driver to MFD sybsystemd[mfdv1], but it
was suggested I add this driver to platform tree instead.

I suspect "bindings/mfd" is not the right place for bindings
information, but I wasn't sure if I should create "bindings/platform"
or "bindings/rave" to place that file into, so I left things as they
originally were hoping to fix this in next version of the patchset.

NOTE:

 * The driver for "zii,rave-sp-watchdog" exists, but I haven't
   submitted it yet, becuase I wanted to make sure that API exposed by
   this MFD is acceptable and doesn't need drastic changes.

 * This driver is dependent on crc_ccitt_false() introduced in
   2da9378d531f8cc6670c7497f20d936b706ab80b in 'linux-next'

Feedback is greatly appreciated!

Thanks,
Andrey Smirnov

[mfdv1] lkml.kernel.org/r/20170606180643.14258-1-andrew.smirnov@gmail.com

Andrey Smirnov (2):
  platform: Add driver for RAVE Supervisory Processor
  dt-bindings: mfd: Add bindings for ZII RAVE devices

 .../devicetree/bindings/mfd/zii,rave-sp.txt        |   40 +
 drivers/mfd/Makefile                               |    1 +
 drivers/platform/Kconfig                           |    2 +
 drivers/platform/Makefile                          |    1 +
 drivers/platform/rave/Kconfig                      |   26 +
 drivers/platform/rave/Makefile                     |    1 +
 drivers/platform/rave/rave-sp.c                    | 1083 ++++++++++++++++++++
 include/linux/rave-sp.h                            |   54 +
 8 files changed, 1208 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
 create mode 100644 drivers/platform/rave/Kconfig
 create mode 100644 drivers/platform/rave/Makefile
 create mode 100644 drivers/platform/rave/rave-sp.c
 create mode 100644 include/linux/rave-sp.h

-- 
2.9.4

[PATCH 2/2] dt-bindings: mfd: Add bindings for ZII RAVE devices

[Andrey Smirnov]

Cc: cphealy@gmail.com
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 .../devicetree/bindings/mfd/zii,rave-sp.txt        | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/zii,rave-sp.txt

diff --git a/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt b/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
new file mode 100644
index 0000000..53192f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
@@ -0,0 +1,40 @@
+Zodiac Inflight Innovations RAVE Supervisory Processor
+
+RAVE Supervisory Processor communicates with SoC over UART and is
+presented to the kernel as a "serdev". It is expected that its
+device-tree node is specified as a child of a node corresponding to
+UART controller used for communication.
+
+Required parent device properties:
+
+ - compatible: Should be one of:
+	- "zii,rave-sp-niu"
+	- "zii,rave-sp-mezz"
+	- "zii,rave-sp-esb"
+	- "zii,rave-sp-rdu1"
+	- "zii,rave-sp-rdu2"
+
+ - current-speed: Should be set to baud rate SP device is using
+
+RAVE SP consists of the following sub-devices:
+
+Device				 Description
+------				 -----------
+rave-sp-wdt			: Watchdog
+rave-sp-nvmem			: Interface to onborad EEPROM
+rave-sp-backlight		: Display backlight
+rave-sp-hwmon			: Interface to onboard hardware sensors
+rave-sp-leds			: Interface to onboard LEDs
+rave-sp-input			: Interface to onboard power button
+
+Example of usage:
+
+	rdu {
+		compatible = "zii,rave-sp-rdu2";
+		current-speed = <1000000>;
+
+		watchdog {
+			compatible = "zii,rave-sp-watchdog";
+		};
+	};
+
-- 
2.9.4

Re: [PATCH 2/2] dt-bindings: mfd: Add bindings for ZII RAVE devices

[Rob Herring]

On Mon, Jul 10, 2017 at 10:04:49AM -0700, Andrey Smirnov wrote:
> Cc: cphealy-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
> Cc: Lucas Stach <l.stach-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
> Cc: Nikita Yushchenko <nikita.yoush-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
> Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Signed-off-by: Andrey Smirnov <andrew.smirnov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  .../devicetree/bindings/mfd/zii,rave-sp.txt        | 40 ++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt b/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
> new file mode 100644
> index 0000000..53192f9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
> @@ -0,0 +1,40 @@
> +Zodiac Inflight Innovations RAVE Supervisory Processor
> +
> +RAVE Supervisory Processor communicates with SoC over UART and is
> +presented to the kernel as a "serdev". It is expected that its

Drop the "and is ..." part. That's a kernel detail and not part of the 
binding. With that,

Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>

> +device-tree node is specified as a child of a node corresponding to
> +UART controller used for communication.
> +
> +Required parent device properties:
> +
> + - compatible: Should be one of:
> +	- "zii,rave-sp-niu"
> +	- "zii,rave-sp-mezz"
> +	- "zii,rave-sp-esb"
> +	- "zii,rave-sp-rdu1"
> +	- "zii,rave-sp-rdu2"
> +
> + - current-speed: Should be set to baud rate SP device is using
> +
> +RAVE SP consists of the following sub-devices:
> +
> +Device				 Description
> +------				 -----------
> +rave-sp-wdt			: Watchdog
> +rave-sp-nvmem			: Interface to onborad EEPROM
> +rave-sp-backlight		: Display backlight
> +rave-sp-hwmon			: Interface to onboard hardware sensors
> +rave-sp-leds			: Interface to onboard LEDs
> +rave-sp-input			: Interface to onboard power button
> +
> +Example of usage:
> +
> +	rdu {
> +		compatible = "zii,rave-sp-rdu2";
> +		current-speed = <1000000>;
> +
> +		watchdog {
> +			compatible = "zii,rave-sp-watchdog";
> +		};
> +	};
> +
> -- 
> 2.9.4
> 
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