Commit Graph

21 Commits

Author SHA1 Message Date
Lucas De Marchi c8440336fe platform-drivers: x86: fix common misspellings
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-03-28 06:46:10 -04:00
Huang Weiyi 2f215a7d6d intel_scu_ipc: remove duplicated #include
Remove duplicated #include('s) in
  drivers/platform/x86/intel_scu_ipc.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-31 12:59:34 +10:00
Axel Lin ecb5646cb0 intel_scu_ipc: fix signedness bug
busy_loop() returns negative error code, thus change err variable
from u32 to int to properly propagate correct error code.

Also remove unneeded initialization for err and i variables.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-26 08:57:17 +10:00
Sreedhara DS 5369c02d95 intel_scu_ipc: Utility driver for intel scu ipc
This driver implements ioctl and interfaces with intel scu ipc driver. It
is used to access pmic/msic registers from user space and firmware update
utility.

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
[Extensive clean up and debug]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-01-07 17:03:40 -05:00
Feng Tang 1da4b1c6a4 x86/mrst: Add SFI platform device parsing code
SFI provides a series of tables. These describe the platform devices present
including SPI and I²C devices, as well as various sensors, keypads and other
glue as well as interfaces provided via the SCU IPC mechanism (intel_scu_ipc.c)

This patch is a merge of the core elements and relevant fixes from the
Intel development code by Feng, Alek, myself into a single coherent patch
for upstream submission.

It provides the needed infrastructure to register I2C, SPI and platform devices
described by the tables, as well as handlers for some of the hardware already
supported in kernel. The 0.8 firmware also provides GPIO tables.

Devices are created at boot time or if they are SCU dependant at the point an
SCU is discovered. The existing Linux device mechanisms will then handle the
device binding. At an abstract level this is an SFI to Linux device translator.

Device/platform specific setup/glue is in this file. This is done so that the
drivers for the generic I²C and SPI bus devices remain cross platform as they
should.

(Updated from RFC version to correct the emc1403 name used by the firmware
 and a wrongly used #define)

Signed-off-by: Alek Du <alek.du@linux.intel.com>
LKML-Reference: <20101109112158.20013.6158.stgit@localhost.localdomain>
[Clean ups, removal of 0.7 support]
Signed-off-by: Feng Tang <feng.tang@linux.intel.com>
[Clean ups]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-11-09 14:45:52 +01:00
Alan Cox 209009b2cb scu_ipc: Fix warning caused by include changes
We need to include the SFI headers. This is fine as the SCU is only
relevant to x86 platforms with SFI.

Fixes the -next warning report.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-10-21 09:36:45 -04:00
Jianwei Yang 32e2f63bcc intel_scu_ipc: fix IPC i2c write bug
We should pass the data to the data register.

Signed-off-by: Jianwei Yang <jianwei.yang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-24 10:42:09 -07:00
Hong Liu 5aa06930fb intel_scu_ipc: fix size field for intel_scu_ipc_command
Size for PMIC read/write command is byte, while it is DWORD for other
IPC commands.

Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: ALan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:33 -04:00
Hong Liu 77e01d6d17 intel_scu_ipc: return -EIO for error condition in busy_loop
Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:33 -04:00
Hong Liu 215c330fe9 intel_scu_ipc: fix data packing of PMIC command on Moorestown
Data is 2-byte per entry for PMIC read-modify-update command.

Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:32 -04:00
Andy Ross 6c8d0fdbe8 Clean up command packing on MRST.
Don't pass more bytes in the command length field than we filled.

Signed-off-by: Andy Ross <andy.ross@windriver.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:32 -04:00
Arjan van de Ven ed6f2b4da3 zero the stack buffer before giving random garbage to the SCU
some messages take 4 bytes, but only fill 3 bytes....
this patch makes sure that whatever we send to the SCU is zeroed first

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:31 -04:00
Arjan van de Ven 51cd525dce Fix stack buffer size for IPC writev messages
The stack buffer for IPC messages was 16 bytes, limiting messages to a
size of 4 (each message is 32 bit).
However, the touch screen driver is trying to send messages of size 5....

(AC: Set to 20 bytes having checked the max size allowed)

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:31 -04:00
Alan Cox 9dd3adeb00 intel_scu_ipc: Use the new cpu identification function
This provides an architecture level board identify function to replace the
cpuid direct usage

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:30 -04:00
Sreedhara DS a5b74e69e1 intel_scu_ipc: tidy up unused bits
Delete unused constants IPC_CMD_INDIRECT_RD and IPC_CMD_INDIRECT_WR
Remove multiple inclusion of header file "asm/mrst.h"

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:30 -04:00
Sreedhara DS 804f8681a9 Remove indirect read write api support.
The firmware of production devices does not support this interface so this
is dead code.

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:30 -04:00
Sreedhara DS e3359fd5d2 intel_scu_ipc: Support Medfield processors
Changes to work on bothMmoorestown and Medfield
New pci id added for Medfield
Return type of ipc_data_readl chnaged from u8 to u32

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:29 -04:00
Sreedhara DS 14d10f0a48 intel_scu_ipc: detect CPU type automatically
Intel SCU message formats depend upon the processor type. Replace the
module option with automatic detection of the processor type.

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:50:29 -04:00
Sreedhara DS b4fd4f890b intel_scu_ipc: Oops/crash fixes
- fix reversing of command/sub arguments
- fix a crash if the i2c interface is called before the device is found

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-07-19 13:17:37 -07:00
Alan Cox 2e8949f09e intel_scu_ipc: Length fix
Commands with data must set the length in the message.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-06-01 08:40:47 -07:00
Sreedhara DS 9a58a33339 IPC driver for Intel Mobile Internet Device (MID) platforms
The IPC (inter processor communications) is used to provide the
communications between kernel and system control units on some embedded
Intel x86 platforms.

(Various bits of clean up and restructuring by Alan Cox)

Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
2010-05-17 12:06:07 -04:00