linux-kernel - [PATCH v3 0/3] soc: ti: Introduce wkup_m3

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Date:	Tue, 22 Sep 2015 19:14:51 -0500
From:	Dave Gerlach <d-gerlach@...com>
To:	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>
CC:	Jassi Brar <jassisinghbrar@...il.com>, Suman Anna <s-anna@...com>,
	Tony Lindgren <tony@...mide.com>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Keerty J <j-keerthy@...com>, Dave Gerlach <d-gerlach@...com>
Subject: [PATCH v3 0/3] soc: ti: Introduce wkup_m3_ipc driver

Hi,
This series is version 3 of the code to introduce a wkup_m3_ipc driver
to handle communication between the MPU and Cortex M3 present on TI AM335x
and AM437x SoCs. v2 of this series can be found at [1]. Only patch 3
has been changed based on a request from Tony and a few cleanups:

- Rather than exporting all of the functionality of the driver, added
  wkup_m3_ipc_get and wkup_m3_ipc_put to allow users to just get a handle
  containing an ops structure for use.

- Changed all ops (previously exported functions) to take pointer to
  struct wkup_m3_ipc as an argument now that user code will get this
  from wkup_m3_ipc_get.

- General cleanup to probe function

- Added MODULE_DEVICE_TABLE so driver can probe automatically.

The series containing the DT nodes can be found here [2]. The actual dt
nodes for wkup_m3_ipc (last two patches) have been merged but discussion
is still open for the ti,mbox-send-noirq flag patches and depends on the
comments provided for the omap-mailbox change presented in patch 1 of
this series.

A full branch containing all necessary PM code for both am335x and am437x
has been pushed here [3] to provide a big picture view of the plan for
this series.

This driver relies on the firmware at [4] in the next-upstream branch
being present in /lib/firmware in the rootfs or built in to the kernel.

Regards,
Dave

[1] https://lkml.org/lkml/2015/7/17/797
[2] https://lkml.org/lkml/2015/7/17/813
[3] https://github.com/dgerlach/linux-pm/tree/pm-v4.3-rc1-amx3-suspend
[4] https://git.ti.com/ti-cm3-pm-firmware

Dave Gerlach (3):
  mailbox/omap: Add ti,mbox-send-noirq quirk to fix AM33xx CPU Idle
  Documentation: dt: add bindings for TI Wakeup M3 IPC device
  soc: ti: Add wkup_m3_ipc driver

 .../devicetree/bindings/mailbox/omap-mailbox.txt   |   8 +
 .../devicetree/bindings/soc/ti/wkup_m3_ipc.txt     |  57 +++
 drivers/mailbox/omap-mailbox.c                     |  49 +-
 drivers/soc/ti/Kconfig                             |  10 +
 drivers/soc/ti/Makefile                            |   1 +
 drivers/soc/ti/wkup_m3_ipc.c                       | 508 +++++++++++++++++++++
 include/linux/wkup_m3_ipc.h                        |  55 +++
 7 files changed, 684 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt
 create mode 100644 drivers/soc/ti/wkup_m3_ipc.c
 create mode 100644 include/linux/wkup_m3_ipc.h

-- 
2.4.6

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