cros e0 fix

grub-core/term/arm/cros_ec.h

@@ -0,0 +1,59 @@
+#include <grub/types.h>
+/*
+ * Hard-code the number of columns we happen to know we have right now.  It
+ * would be more correct to call cros_ec_mkbp_info() at startup and determine
+ * the actual number of keyboard cols from there.
+ */
+#define CROS_EC_KEYSCAN_COLS 13
+#define CROS_EC_KEYSCAN_ROWS 8
+
+/* Information returned by a key scan */
+struct cros_ec_keyscan {
+	grub_uint8_t data[CROS_EC_KEYSCAN_COLS];
+};
+
+typedef struct CrosEcBusOps
+{
+	int (*init)(struct CrosEcBusOps *me);
+
+	/**
+	 * Send a command to a ChromeOS EC device and return the reply.
+	 *
+	 * The device's internal input/output buffers are used.
+	 *
+	 * @param bus		ChromeOS EC bus ops
+	 * @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 (*send_command)(struct CrosEcBusOps *me, grub_uint8_t cmd,
+			    int cmd_version,
+			    const void *dout, grub_uint32_t dout_len,
+			    void *din, grub_uint32_t din_len);
+
+	int (*send_packet)(struct CrosEcBusOps *me,
+			   const void *dout, grub_uint32_t dout_len,
+			   void *din, grub_uint32_t din_len);
+
+	/**
+	 * Byte I/O functions.
+	 *
+	 * Read or write a sequence a bytes over the desired protocol.
+	 * Used to support protocol variants - currently only implemented
+	 * for LPC.
+	 *
+	 * @param data		Read / write data buffer
+	 * @param port		I/O port
+	 * @size		Number of bytes to read / write
+	 */
+	void (*read)(grub_uint8_t *data, grub_uint16_t port, int size);
+	void (*write)(const grub_uint8_t *data, grub_uint16_t port, int size);
+} CrosEcBusOps;
+
+int cros_ec_set_bus(CrosEcBusOps *bus);
+int cros_ec_scan_keyboard(struct cros_ec_keyscan *scan);
+int cros_ec_init(void);