X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Fcros_ec.h;h=771a176eeabb4df247eed5ced0c9ce59b99b3da4;hb=d3525b6bb0c39de537f0d2e79bb9ab9ad8fd8bf5;hp=1e89f29eea62b517da43e699b77730e427217827;hpb=8b485ba12b0defa0c4ed3559789250238f8331a8;p=u-boot diff --git a/include/cros_ec.h b/include/cros_ec.h index 1e89f29eea..771a176eea 100644 --- a/include/cros_ec.h +++ b/include/cros_ec.h @@ -11,29 +11,15 @@ #include #include -#include #include - -/* 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 */ -}; +#include +#include /* 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 */ + struct udevice *dev; /* Transport device */ + struct gpio_desc ec_int; /* GPIO used as EC interrupt line */ + int protocol_version; /* Protocol version to use */ int optimise_flash_write; /* Don't write erased flash blocks */ /* @@ -63,6 +49,17 @@ struct mbkp_keyscan { uint8_t data[CROS_EC_KEYSCAN_COLS]; }; +/* Holds information about the Chrome EC */ +struct fdt_cros_ec { + struct fmap_entry flash; /* Address and size of EC flash */ + /* + * Byte value of erased flash, or -1 if not known. It is normally + * 0xff but some flash devices use 0 (e.g. STM32Lxxx) + */ + int flash_erase_value; + struct fmap_entry region[EC_FLASH_REGION_COUNT]; +}; + /** * Read the ID of the CROS-EC device * @@ -84,7 +81,7 @@ int cros_ec_read_id(struct cros_ec_dev *dev, char *id, int maxlen); * @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); +int cros_ec_scan_keyboard(struct udevice *dev, struct mbkp_keyscan *scan); /** * Read which image is currently running on the CROS-EC device. @@ -128,7 +125,7 @@ int cros_ec_reboot(struct cros_ec_dev *dev, enum ec_reboot_cmd cmd, * @param dev CROS-EC device * @return 0 if no interrupt is pending */ -int cros_ec_interrupt_pending(struct cros_ec_dev *dev); +int cros_ec_interrupt_pending(struct udevice *dev); enum { CROS_EC_OK, @@ -140,7 +137,7 @@ enum { }; /** - * Set up the Chromium OS matrix keyboard protocol + * Initialise the Chromium OS EC driver * * @param blob Device tree blob containing setup information * @param cros_ecp Returns pointer to the cros_ec device, or NULL if none @@ -157,7 +154,7 @@ int cros_ec_init(const void *blob, struct cros_ec_dev **cros_ecp); * @param info Place to put the info structure */ int cros_ec_info(struct cros_ec_dev *dev, - struct ec_response_cros_ec_info *info); + struct ec_response_mkbp_info *info); /** * Read the host event flags @@ -221,85 +218,18 @@ int cros_ec_flash_update_rw(struct cros_ec_dev *dev, */ struct cros_ec_dev *board_get_cros_ec_dev(void); +struct dm_cros_ec_ops { + int (*check_version)(struct udevice *dev); + int (*command)(struct udevice *dev, uint8_t cmd, int cmd_version, + const uint8_t *dout, int dout_len, + uint8_t **dinp, int din_len); + int (*packet)(struct udevice *dev, int out_bytes, int in_bytes); +}; -/* 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); +#define dm_cros_ec_get_ops(dev) \ + ((struct dm_cros_ec_ops *)(dev)->driver->ops) -/** - * 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); +int cros_ec_register(struct udevice *dev); /** * Dump a block of data for a command. @@ -320,15 +250,6 @@ void cros_ec_dump_data(const char *name, int cmd, const uint8_t *data, int len); */ 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); @@ -350,6 +271,17 @@ int cros_ec_flash_erase(struct cros_ec_dev *dev, uint32_t offset, int cros_ec_flash_read(struct cros_ec_dev *dev, uint8_t *data, uint32_t offset, uint32_t size); +/** + * Read back flash parameters + * + * This function reads back parameters of the flash as reported by the EC + * + * @param dev Pointer to device + * @param info Pointer to output flash info struct + */ +int cros_ec_read_flashinfo(struct cros_ec_dev *dev, + struct ec_response_flash_info *info); + /** * Write data to the flash * @@ -420,7 +352,7 @@ int cros_ec_read_build_info(struct cros_ec_dev *dev, char **strp); * @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); +int cros_ec_set_ldo(struct udevice *dev, uint8_t index, uint8_t state); /** * Read back a LDO / FET current state. @@ -430,5 +362,44 @@ int cros_ec_set_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t state); * @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); +int cros_ec_get_ldo(struct udevice *dev, uint8_t index, uint8_t *state); + +/** + * Get access to the error reported when cros_ec_board_init() was called + * + * This permits delayed reporting of the EC error if it failed during + * early init. + * + * @return error (0 if there was no error, -ve if there was an error) + */ +int cros_ec_get_error(void); + +/** + * Returns information from the FDT about the Chrome EC flash + * + * @param dev Device to read from + * @param config Structure to use to return information + */ +int cros_ec_decode_ec_flash(struct udevice *dev, 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); + +struct i2c_msg; +/* + * Tunnel an I2C transfer to the EC + * + * @param dev CROS-EC device + * @param port The remote port on EC to use + * @param msg List of messages to transfer + * @param nmsgs Number of messages to transfer + */ +int cros_ec_i2c_tunnel(struct udevice *dev, int port, struct i2c_msg *msg, + int nmsgs); + #endif