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mfd: cros_ec: Add char dev and virtual dev pointers 

The ChromeOS Embedded Controller has to be accessed by applications.
A virtual character device is used as an interface with user-space.

Extend the struct cros_ec_device with the fields needed by the driver
of this virtual character device.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Acked-by: Lee Jones <lee.jones@linaro.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Javier Martinez Canillas 2015-02-02 12:26:23 +01:00 committed by Olof Johansson
parent 1b84f2a4cd
commit 05c11ac4e0
1 changed files with 14 additions and 1 deletions
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15
include/linux/mfd/cros_ec.h
View File

@ -16,6 +16,7 @@
#ifndef __LINUX_MFD_CROS_EC_H
#define __LINUX_MFD_CROS_EC_H
#include <linux/cdev.h>
#include <linux/notifier.h>
#include <linux/mfd/cros_ec_commands.h>
#include <linux/mutex.h>
@ -59,9 +60,17 @@ struct cros_ec_command {
*
* @ec_name: name of EC device (e.g. 'chromeos-ec')
* @phys_name: name of physical comms layer (e.g. 'i2c-4')
* @dev: Device pointer
* @dev: Device pointer for physical comms device
* @vdev: Device pointer for virtual comms device
* @cdev: Character device structure for virtual comms device
* @was_wake_device: true if this device was set to wake the system from
* sleep at the last suspend
* @cmd_readmem: direct read of the EC memory-mapped region, if supported
* @offset is within EC_LPC_ADDR_MEMMAP region.
* @bytes: number of bytes to read. zero means "read a string" (including
* the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be read.
* Caller must ensure that the buffer is large enough for the result when
* reading a string.
*
* @priv: Private data
* @irq: Interrupt to use
@ -90,8 +99,12 @@ struct cros_ec_device {
const char *ec_name;
const char *phys_name;
struct device *dev;
struct device *vdev;
struct cdev cdev;
bool was_wake_device;
struct class *cros_class;
int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
unsigned int bytes, void *dest);
/* These are used to implement the platform-specific interface */
void *priv;