mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-24 21:54:01 +00:00
cros: add cros_ec driver
This patch adds the cros_ec driver that implements the protocol for communicating with Google's ChromeOS embedded controller. Signed-off-by: Bernie Thompson <bhthompson@chromium.org> Signed-off-by: Bill Richardson <wfrichar@chromium.org> Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Hung-ying Tyan <tyanh@chromium.org> Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Signed-off-by: Randall Spangler <rspangler@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Hung-ying Tyan
Tom Rini
parent
ca85eb8c42
commit
88364387c6
8 changed files with 3278 additions and 0 deletions
38
doc/device-tree-bindings/misc/cros-ec.txt
Normal file
38
doc/device-tree-bindings/misc/cros-ec.txt
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
Chrome OS CROS_EC Binding
|
||||
======================
|
||||
|
||||
The device tree node which describes the operation of the CROS_EC interface
|
||||
is as follows:
|
||||
|
||||
Required properties :
|
||||
- compatible = "google,cros-ec"
|
||||
|
||||
Optional properties :
|
||||
- spi-max-frequency : Sets the maximum frequency (in Hz) for SPI bus
|
||||
operation
|
||||
- i2c-max-frequency : Sets the maximum frequency (in Hz) for I2C bus
|
||||
operation
|
||||
- ec-interrupt : Selects the EC interrupt, defined as a GPIO according
|
||||
to the platform
|
||||
- optimise-flash-write : Boolean property - if present then flash blocks
|
||||
containing all 0xff will not be written, since we assume that the EC
|
||||
uses that pattern for erased blocks
|
||||
|
||||
The CROS_EC node should appear as a subnode of the interrupt that connects it
|
||||
to the EC (e.g. i2c, spi, lpc). The reg property (as usual) will indicate
|
||||
the unit address on that bus.
|
||||
|
||||
|
||||
Example
|
||||
=======
|
||||
|
||||
spi@131b0000 {
|
||||
cros-ec@0 {
|
||||
reg = <0>;
|
||||
compatible = "google,cros-ec";
|
||||
spi-max-frequency = <5000000>;
|
||||
ec-interrupt = <&gpio 174 1>;
|
||||
optimise-flash-write;
|
||||
status = "disabled";
|
||||
};
|
||||
};
|
||||
|
|
@ -28,6 +28,7 @@ LIB := $(obj)libmisc.o
|
|||
COBJS-$(CONFIG_ALI152X) += ali512x.o
|
||||
COBJS-$(CONFIG_DS4510) += ds4510.o
|
||||
COBJS-$(CONFIG_CBMEM_CONSOLE) += cbmem_console.o
|
||||
COBJS-$(CONFIG_CROS_EC) += cros_ec.o
|
||||
COBJS-$(CONFIG_FSL_IIM) += fsl_iim.o
|
||||
COBJS-$(CONFIG_GPIO_LED) += gpio_led.o
|
||||
COBJS-$(CONFIG_FSL_MC9SDZ60) += mc9sdz60.o
|
||||
|
|
|
|||
1304
drivers/misc/cros_ec.c
Normal file
1304
drivers/misc/cros_ec.c
Normal file
File diff suppressed because it is too large
Load diff
449
include/cros_ec.h
Normal file
449
include/cros_ec.h
Normal file
|
|
@ -0,0 +1,449 @@
|
|||
/*
|
||||
* Chromium OS cros_ec driver
|
||||
*
|
||||
* Copyright (c) 2012 The Chromium OS Authors.
|
||||
* See file CREDITS for list of people who contributed to this
|
||||
* project.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 of
|
||||
* the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
* MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#ifndef _CROS_EC_H
|
||||
#define _CROS_EC_H
|
||||
|
||||
#include <linux/compiler.h>
|
||||
#include <ec_commands.h>
|
||||
#include <fdtdec.h>
|
||||
#include <cros_ec_message.h>
|
||||
|
||||
/* Which interface is the device on? */
|
||||
enum cros_ec_interface_t {
|
||||
CROS_EC_IF_NONE,
|
||||
CROS_EC_IF_SPI,
|
||||
CROS_EC_IF_I2C,
|
||||
CROS_EC_IF_LPC, /* Intel Low Pin Count interface */
|
||||
};
|
||||
|
||||
/* Our configuration information */
|
||||
struct cros_ec_dev {
|
||||
enum cros_ec_interface_t interface;
|
||||
struct spi_slave *spi; /* Our SPI slave, if using SPI */
|
||||
int node; /* Our node */
|
||||
int parent_node; /* Our parent node (interface) */
|
||||
unsigned int cs; /* Our chip select */
|
||||
unsigned int addr; /* Device address (for I2C) */
|
||||
unsigned int bus_num; /* Bus number (for I2C) */
|
||||
unsigned int max_frequency; /* Maximum interface frequency */
|
||||
struct fdt_gpio_state ec_int; /* GPIO used as EC interrupt line */
|
||||
int cmd_version_is_supported; /* Device supports command versions */
|
||||
int optimise_flash_write; /* Don't write erased flash blocks */
|
||||
|
||||
/*
|
||||
* These two buffers will always be dword-aligned and include enough
|
||||
* space for up to 7 word-alignment bytes also, so we can ensure that
|
||||
* the body of the message is always dword-aligned (64-bit).
|
||||
*
|
||||
* We use this alignment to keep ARM and x86 happy. Probably word
|
||||
* alignment would be OK, there might be a small performance advantage
|
||||
* to using dword.
|
||||
*/
|
||||
uint8_t din[ALIGN(MSG_BYTES + sizeof(int64_t), sizeof(int64_t))]
|
||||
__aligned(sizeof(int64_t));
|
||||
uint8_t dout[ALIGN(MSG_BYTES + sizeof(int64_t), sizeof(int64_t))]
|
||||
__aligned(sizeof(int64_t));
|
||||
};
|
||||
|
||||
/*
|
||||
* Hard-code the number of columns we happen to know we have right now. It
|
||||
* would be more correct to call cros_ec_info() at startup and determine the
|
||||
* actual number of keyboard cols from there.
|
||||
*/
|
||||
#define CROS_EC_KEYSCAN_COLS 13
|
||||
|
||||
/* Information returned by a key scan */
|
||||
struct mbkp_keyscan {
|
||||
uint8_t data[CROS_EC_KEYSCAN_COLS];
|
||||
};
|
||||
|
||||
/**
|
||||
* Read the ID of the CROS-EC device
|
||||
*
|
||||
* The ID is a string identifying the CROS-EC device.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param id Place to put the ID
|
||||
* @param maxlen Maximum length of the ID field
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_read_id(struct cros_ec_dev *dev, char *id, int maxlen);
|
||||
|
||||
/**
|
||||
* Read a keyboard scan from the CROS-EC device
|
||||
*
|
||||
* Send a message requesting a keyboard scan and return the result
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param scan Place to put the scan results
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_scan_keyboard(struct cros_ec_dev *dev, struct mbkp_keyscan *scan);
|
||||
|
||||
/**
|
||||
* Read which image is currently running on the CROS-EC device.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param image Destination for image identifier
|
||||
* @return 0 if ok, <0 on error
|
||||
*/
|
||||
int cros_ec_read_current_image(struct cros_ec_dev *dev,
|
||||
enum ec_current_image *image);
|
||||
|
||||
/**
|
||||
* Read the hash of the CROS-EC device firmware.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param hash Destination for hash information
|
||||
* @return 0 if ok, <0 on error
|
||||
*/
|
||||
int cros_ec_read_hash(struct cros_ec_dev *dev,
|
||||
struct ec_response_vboot_hash *hash);
|
||||
|
||||
/**
|
||||
* Send a reboot command to the CROS-EC device.
|
||||
*
|
||||
* Note that some reboot commands (such as EC_REBOOT_COLD) also reboot the AP.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param cmd Reboot command
|
||||
* @param flags Flags for reboot command (EC_REBOOT_FLAG_*)
|
||||
* @return 0 if ok, <0 on error
|
||||
*/
|
||||
int cros_ec_reboot(struct cros_ec_dev *dev, enum ec_reboot_cmd cmd,
|
||||
uint8_t flags);
|
||||
|
||||
/**
|
||||
* Check if the CROS-EC device has an interrupt pending.
|
||||
*
|
||||
* Read the status of the external interrupt connected to the CROS-EC device.
|
||||
* If no external interrupt is configured, this always returns 1.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @return 0 if no interrupt is pending
|
||||
*/
|
||||
int cros_ec_interrupt_pending(struct cros_ec_dev *dev);
|
||||
|
||||
enum {
|
||||
CROS_EC_OK,
|
||||
CROS_EC_ERR = 1,
|
||||
CROS_EC_ERR_FDT_DECODE,
|
||||
CROS_EC_ERR_CHECK_VERSION,
|
||||
CROS_EC_ERR_READ_ID,
|
||||
CROS_EC_ERR_DEV_INIT,
|
||||
};
|
||||
|
||||
/**
|
||||
* Set up the Chromium OS matrix keyboard protocol
|
||||
*
|
||||
* @param blob Device tree blob containing setup information
|
||||
* @param cros_ecp Returns pointer to the cros_ec device, or NULL if none
|
||||
* @return 0 if we got an cros_ec device and all is well (or no cros_ec is
|
||||
* expected), -ve if we should have an cros_ec device but failed to find
|
||||
* one, or init failed (-CROS_EC_ERR_...).
|
||||
*/
|
||||
int cros_ec_init(const void *blob, struct cros_ec_dev **cros_ecp);
|
||||
|
||||
/**
|
||||
* Read information about the keyboard matrix
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param info Place to put the info structure
|
||||
*/
|
||||
int cros_ec_info(struct cros_ec_dev *dev,
|
||||
struct ec_response_cros_ec_info *info);
|
||||
|
||||
/**
|
||||
* Read the host event flags
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param events_ptr Destination for event flags. Not changed on error.
|
||||
* @return 0 if ok, <0 on error
|
||||
*/
|
||||
int cros_ec_get_host_events(struct cros_ec_dev *dev, uint32_t *events_ptr);
|
||||
|
||||
/**
|
||||
* Clear the specified host event flags
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param events Event flags to clear
|
||||
* @return 0 if ok, <0 on error
|
||||
*/
|
||||
int cros_ec_clear_host_events(struct cros_ec_dev *dev, uint32_t events);
|
||||
|
||||
/**
|
||||
* Get/set flash protection
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param set_mask Mask of flags to set; if 0, just retrieves existing
|
||||
* protection state without changing it.
|
||||
* @param set_flags New flag values; only bits in set_mask are applied;
|
||||
* ignored if set_mask=0.
|
||||
* @param prot Destination for updated protection state from EC.
|
||||
* @return 0 if ok, <0 on error
|
||||
*/
|
||||
int cros_ec_flash_protect(struct cros_ec_dev *dev,
|
||||
uint32_t set_mask, uint32_t set_flags,
|
||||
struct ec_response_flash_protect *resp);
|
||||
|
||||
|
||||
/**
|
||||
* Run internal tests on the cros_ec interface.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @return 0 if ok, <0 if the test failed
|
||||
*/
|
||||
int cros_ec_test(struct cros_ec_dev *dev);
|
||||
|
||||
/**
|
||||
* Update the EC RW copy.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param image the content to write
|
||||
* @param imafge_size content length
|
||||
* @return 0 if ok, <0 if the test failed
|
||||
*/
|
||||
int cros_ec_flash_update_rw(struct cros_ec_dev *dev,
|
||||
const uint8_t *image, int image_size);
|
||||
|
||||
/**
|
||||
* Return a pointer to the board's CROS-EC device
|
||||
*
|
||||
* This should be implemented by board files.
|
||||
*
|
||||
* @return pointer to CROS-EC device, or NULL if none is available
|
||||
*/
|
||||
struct cros_ec_dev *board_get_cros_ec_dev(void);
|
||||
|
||||
|
||||
/* Internal interfaces */
|
||||
int cros_ec_i2c_init(struct cros_ec_dev *dev, const void *blob);
|
||||
int cros_ec_spi_init(struct cros_ec_dev *dev, const void *blob);
|
||||
int cros_ec_lpc_init(struct cros_ec_dev *dev, const void *blob);
|
||||
|
||||
/**
|
||||
* Read information from the fdt for the i2c cros_ec interface
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param blob Device tree blob
|
||||
* @return 0 if ok, -1 if we failed to read all required information
|
||||
*/
|
||||
int cros_ec_i2c_decode_fdt(struct cros_ec_dev *dev, const void *blob);
|
||||
|
||||
/**
|
||||
* Read information from the fdt for the spi cros_ec interface
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param blob Device tree blob
|
||||
* @return 0 if ok, -1 if we failed to read all required information
|
||||
*/
|
||||
int cros_ec_spi_decode_fdt(struct cros_ec_dev *dev, const void *blob);
|
||||
|
||||
/**
|
||||
* Check whether the LPC interface supports new-style commands.
|
||||
*
|
||||
* LPC has its own way of doing this, which involves checking LPC values
|
||||
* visible to the host. Do this, and update dev->cmd_version_is_supported
|
||||
* accordingly.
|
||||
*
|
||||
* @param dev CROS-EC device to check
|
||||
*/
|
||||
int cros_ec_lpc_check_version(struct cros_ec_dev *dev);
|
||||
|
||||
/**
|
||||
* Send a command to an I2C CROS-EC device and return the reply.
|
||||
*
|
||||
* This rather complicated function deals with sending both old-style and
|
||||
* new-style commands. The old ones have just a command byte and arguments.
|
||||
* The new ones have version, command, arg-len, [args], chksum so are 3 bytes
|
||||
* longer.
|
||||
*
|
||||
* The device's internal input/output buffers are used.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param cmd Command to send (EC_CMD_...)
|
||||
* @param cmd_version Version of command to send (EC_VER_...)
|
||||
* @param dout Output data (may be NULL If dout_len=0)
|
||||
* @param dout_len Size of output data in bytes
|
||||
* @param dinp Returns pointer to response data
|
||||
* @param din_len Maximum size of response in bytes
|
||||
* @return number of bytes in response, or -1 on error
|
||||
*/
|
||||
int cros_ec_i2c_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
|
||||
const uint8_t *dout, int dout_len,
|
||||
uint8_t **dinp, int din_len);
|
||||
|
||||
/**
|
||||
* Send a command to a LPC CROS-EC device and return the reply.
|
||||
*
|
||||
* The device's internal input/output buffers are used.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param cmd Command to send (EC_CMD_...)
|
||||
* @param cmd_version Version of command to send (EC_VER_...)
|
||||
* @param dout Output data (may be NULL If dout_len=0)
|
||||
* @param dout_len Size of output data in bytes
|
||||
* @param dinp Returns pointer to response data
|
||||
* @param din_len Maximum size of response in bytes
|
||||
* @return number of bytes in response, or -1 on error
|
||||
*/
|
||||
int cros_ec_lpc_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
|
||||
const uint8_t *dout, int dout_len,
|
||||
uint8_t **dinp, int din_len);
|
||||
|
||||
int cros_ec_spi_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
|
||||
const uint8_t *dout, int dout_len,
|
||||
uint8_t **dinp, int din_len);
|
||||
|
||||
/**
|
||||
* Dump a block of data for a command.
|
||||
*
|
||||
* @param name Name for data (e.g. 'in', 'out')
|
||||
* @param cmd Command number associated with data, or -1 for none
|
||||
* @param data Data block to dump
|
||||
* @param len Length of data block to dump
|
||||
*/
|
||||
void cros_ec_dump_data(const char *name, int cmd, const uint8_t *data, int len);
|
||||
|
||||
/**
|
||||
* Calculate a simple 8-bit checksum of a data block
|
||||
*
|
||||
* @param data Data block to checksum
|
||||
* @param size Size of data block in bytes
|
||||
* @return checksum value (0 to 255)
|
||||
*/
|
||||
int cros_ec_calc_checksum(const uint8_t *data, int size);
|
||||
|
||||
/**
|
||||
* Decode a flash region parameter
|
||||
*
|
||||
* @param argc Number of params remaining
|
||||
* @param argv List of remaining parameters
|
||||
* @return flash region (EC_FLASH_REGION_...) or -1 on error
|
||||
*/
|
||||
int cros_ec_decode_region(int argc, char * const argv[]);
|
||||
|
||||
int cros_ec_flash_erase(struct cros_ec_dev *dev, uint32_t offset,
|
||||
uint32_t size);
|
||||
|
||||
/**
|
||||
* Read data from the flash
|
||||
*
|
||||
* Read an arbitrary amount of data from the EC flash, by repeatedly reading
|
||||
* small blocks.
|
||||
*
|
||||
* The offset starts at 0. You can obtain the region information from
|
||||
* cros_ec_flash_offset() to find out where to read for a particular region.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param data Pointer to data buffer to read into
|
||||
* @param offset Offset within flash to read from
|
||||
* @param size Number of bytes to read
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_flash_read(struct cros_ec_dev *dev, uint8_t *data, uint32_t offset,
|
||||
uint32_t size);
|
||||
|
||||
/**
|
||||
* Write data to the flash
|
||||
*
|
||||
* Write an arbitrary amount of data to the EC flash, by repeatedly writing
|
||||
* small blocks.
|
||||
*
|
||||
* The offset starts at 0. You can obtain the region information from
|
||||
* cros_ec_flash_offset() to find out where to write for a particular region.
|
||||
*
|
||||
* Attempting to write to the region where the EC is currently running from
|
||||
* will result in an error.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param data Pointer to data buffer to write
|
||||
* @param offset Offset within flash to write to.
|
||||
* @param size Number of bytes to write
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_flash_write(struct cros_ec_dev *dev, const uint8_t *data,
|
||||
uint32_t offset, uint32_t size);
|
||||
|
||||
/**
|
||||
* Obtain position and size of a flash region
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param region Flash region to query
|
||||
* @param offset Returns offset of flash region in EC flash
|
||||
* @param size Returns size of flash region
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_flash_offset(struct cros_ec_dev *dev, enum ec_flash_region region,
|
||||
uint32_t *offset, uint32_t *size);
|
||||
|
||||
/**
|
||||
* Read/write VbNvContext from/to a CROS-EC device.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param block Buffer of VbNvContext to be read/write
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_read_vbnvcontext(struct cros_ec_dev *dev, uint8_t *block);
|
||||
int cros_ec_write_vbnvcontext(struct cros_ec_dev *dev, const uint8_t *block);
|
||||
|
||||
/**
|
||||
* Read the version information for the EC images
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param versionp This is set to point to the version information
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_read_version(struct cros_ec_dev *dev,
|
||||
struct ec_response_get_version **versionp);
|
||||
|
||||
/**
|
||||
* Read the build information for the EC
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param versionp This is set to point to the build string
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_read_build_info(struct cros_ec_dev *dev, char **strp);
|
||||
|
||||
/**
|
||||
* Switch on/off a LDO / FET.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param index index of the LDO/FET to switch
|
||||
* @param state new state of the LDO/FET : EC_LDO_STATE_ON|OFF
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_set_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t state);
|
||||
|
||||
/**
|
||||
* Read back a LDO / FET current state.
|
||||
*
|
||||
* @param dev CROS-EC device
|
||||
* @param index index of the LDO/FET to switch
|
||||
* @param state current state of the LDO/FET : EC_LDO_STATE_ON|OFF
|
||||
* @return 0 if ok, -1 on error
|
||||
*/
|
||||
int cros_ec_get_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t *state);
|
||||
#endif
|
||||
44
include/cros_ec_message.h
Normal file
44
include/cros_ec_message.h
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
/*
|
||||
* Chromium OS Matrix Keyboard Message Protocol definitions
|
||||
*
|
||||
* Copyright (c) 2012 The Chromium OS Authors.
|
||||
* See file CREDITS for list of people who contributed to this
|
||||
* project.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 of
|
||||
* the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
* MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#ifndef _CROS_MESSAGE_H
|
||||
#define _CROS_MESSAGE_H
|
||||
|
||||
/*
|
||||
* Command interface between EC and AP, for LPC, I2C and SPI interfaces.
|
||||
*
|
||||
* This is copied from the Chromium OS Open Source Embedded Controller code.
|
||||
*/
|
||||
enum {
|
||||
/* The header byte, which follows the preamble */
|
||||
MSG_HEADER = 0xec,
|
||||
|
||||
MSG_HEADER_BYTES = 3,
|
||||
MSG_TRAILER_BYTES = 2,
|
||||
MSG_PROTO_BYTES = MSG_HEADER_BYTES + MSG_TRAILER_BYTES,
|
||||
|
||||
/* Max length of messages */
|
||||
MSG_BYTES = EC_HOST_PARAM_SIZE + MSG_PROTO_BYTES,
|
||||
};
|
||||
|
||||
#endif
|
||||
1440
include/ec_commands.h
Normal file
1440
include/ec_commands.h
Normal file
File diff suppressed because it is too large
Load diff
|
|
@ -84,6 +84,7 @@ enum fdt_compat_id {
|
|||
COMPAT_SAMSUNG_EXYNOS5_SOUND, /* Exynos Sound */
|
||||
COMPAT_WOLFSON_WM8994_CODEC, /* Wolfson WM8994 Sound Codec */
|
||||
COMPAT_SAMSUNG_EXYNOS_SPI, /* Exynos SPI */
|
||||
COMPAT_GOOGLE_CROS_EC, /* Google CROS_EC Protocol */
|
||||
COMPAT_SAMSUNG_EXYNOS_EHCI, /* Exynos EHCI controller */
|
||||
COMPAT_SAMSUNG_EXYNOS_USB_PHY, /* Exynos phy controller for usb2.0 */
|
||||
COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */
|
||||
|
|
|
|||
|
|
@ -57,6 +57,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
|
|||
COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
|
||||
COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
|
||||
COMPAT(SAMSUNG_EXYNOS_SPI, "samsung,exynos-spi"),
|
||||
COMPAT(GOOGLE_CROS_EC, "google,cros-ec"),
|
||||
COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"),
|
||||
COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
|
||||
COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
|
||||
|
|
|
|||
Loading…
Reference in a new issue