Add new ec subdir for Embedded Controllers and common ACPI EC support

Adds a new src/ec subdir for embedded controllers (mostly found in laptops)
and converts Getac P470 and Roda RK886EX to use the new ACPI EC instead
of having their own copies of those functions.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6304 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 49 insertions, 0 deletions

diff --git a/src/ec/acpi/ec.h b/src/ec/acpi/ec.h
new file mode 100644
index 0000000000..77ee6379ea
--- /dev/null
+++ b/src/ec/acpi/ec.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _EC_ACPI_H
+#define _EC_ACPI_H
+
+#define EC_DATA	0x62
+#define EC_SC	0x66
+
+/* EC_SC input */
+#define   EC_SMI_EVT	(1 << 6) // 1: SMI event pending
+#define   EC_SCI_EVT	(1 << 5) // 1: SCI event pending
+#define   EC_BURST	(1 << 4) // controller is in burst mode
+#define   EC_CMD	(1 << 3) // 1: byte in data register is command
+				 // 0: byte in data register is data
+#define   EC_IBF	(1 << 1) // 1: input buffer full (data ready for ec)
+#define   EC_OBF	(1 << 0) // 1: output buffer full (data ready for host)
+/* EC_SC output */
+#define   RD_EC		0x80 // Read Embedded Controller
+#define   WR_EC		0x81 // Write Embedded Controller
+#define   BE_EC		0x82 // Burst Enable Embedded Controller
+#define   BD_EC 	0x83 // Burst Disable Embedded Controller
+#define   QR_EC 	0x84 // Query Embedded Controller
+
+int send_ec_command(u8 command);
+int send_ec_data(u8 data);
+int send_ec_data_nowait(u8 data);
+u8 recv_ec_data(void);
+u8 ec_read(u8 addr);
+int ec_write(u8 addr, u8 data);
+
+#endif
+