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cros_ec: sandbox: Add Chrome OS EC emulation

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Add a simple emulation of the Chrome OS EC for sandbox, so that it can
perform various EC tasks such as keyboard handling.

Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2014-02-27 13:26:12 -07:00
parent 2ab83f0d75
commit df93d90aea
6 changed files with 599 additions and 0 deletions
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21
include/cros_ec.h
View file

@ -20,6 +20,7 @@ enum cros_ec_interface_t {
CROS_EC_IF_SPI,
CROS_EC_IF_I2C,
CROS_EC_IF_LPC, /* Intel Low Pin Count interface */
CROS_EC_IF_SANDBOX,
};
/* Our configuration information */
@ -237,6 +238,7 @@ struct cros_ec_dev *board_get_cros_ec_dev(void);
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);
int cros_ec_sandbox_init(struct cros_ec_dev *dev, const void *blob);
/**
* Read information from the fdt for the i2c cros_ec interface
@ -256,6 +258,15 @@ int cros_ec_i2c_decode_fdt(struct cros_ec_dev *dev, const void *blob);
*/
int cros_ec_spi_decode_fdt(struct cros_ec_dev *dev, const void *blob);
/**
* Read information from the fdt for the sandbox 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_sandbox_decode_fdt(struct cros_ec_dev *dev, const void *blob);
/**
* Check whether the LPC interface supports new-style commands.
*
@ -323,6 +334,8 @@ int cros_ec_spi_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
* @return number of bytes in response packet, or <0 on error
*/
int cros_ec_spi_packet(struct cros_ec_dev *dev, int out_bytes, int in_bytes);
int cros_ec_sandbox_packet(struct cros_ec_dev *dev, int out_bytes,
int in_bytes);
/**
* Dump a block of data for a command.
@ -480,4 +493,12 @@ int cros_ec_get_error(void);
*/
int cros_ec_decode_ec_flash(const void *blob, struct fdt_cros_ec *config);
/**
* Check the current keyboard state, in case recovery mode is requested.
* This function is for sandbox only.
*
* @param ec CROS-EC device
*/
void cros_ec_check_keyboard(struct cros_ec_dev *dev);
#endif