mainboard/intel/galileo: Add I2C chip initialization

Add I2C chip initialization for the Galileo boards.

TEST=Build and run on Galileo Gen2

Change-Id: Ib5284d5cd7a67de2f3f98940837ceb2aa69af468
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/14829
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/src/mainboard/intel/galileo/reg_access.h b/src/mainboard/intel/galileo/reg_access.h
new file mode 100644
index 0000000000..451dc877a4
--- /dev/null
+++ b/src/mainboard/intel/galileo/reg_access.h
@@ -0,0 +1,97 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Intel Corp.
+ *
+ * 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.
+ */
+
+#ifndef _GALILEO_REG_ACCESS_H_
+#define _GALILEO_REG_ACCESS_H_
+
+#include <fsp/util.h>
+#include <reg_script.h>
+#include <soc/IntelQNCConfig.h>
+#include <soc/QuarkNcSocId.h>
+#include <soc/reg_access.h>
+
+enum {
+	MAINBOARD_TYPE = REG_SCRIPT_TYPE_MAINBOARD_BASE,
+	/* Add additional mainboard access types here*/
+};
+
+enum {
+	GEN1_I2C_GPIO_EXP_0x20 = 0x20,	/* Cypress CY8C9540A */
+	GEN1_I2C_GPIO_EXP_0x21 = 0x21,	/* Cypress CY8C9540A */
+
+	GEN2_I2C_GPIO_EXP0 = 0x25,	/* NXP PCAL9535A */
+	GEN2_I2C_GPIO_EXP1 = 0x26,	/* NXP PCAL9535A */
+	GEN2_I2C_GPIO_EXP2 = 0x27,	/* NXP PCAL9535A */
+	GEN2_I2C_LED_PWM = 0x47,	/* NXP PCAL9685 */
+};
+
+/* Cypress CY8C9548A registers */
+#define GEN1_GPIO_EXP_INPUT0		0x00
+#define GEN1_GPIO_EXP_INPUT1		0x01
+#define GEN1_GPIO_EXP_INPUT2		0x02
+#define GEN1_GPIO_EXP_INPUT3		0x03
+#define GEN1_GPIO_EXP_INPUT4		0x04
+#define GEN1_GPIO_EXP_INPUT5		0x05
+#define GEN1_GPIO_EXP_OUTPUT0		0x08
+#define GEN1_GPIO_EXP_OUTPUT1		0x09
+#define GEN1_GPIO_EXP_OUTPUT2		0x0a
+#define GEN1_GPIO_EXP_OUTPUT3		0x0b
+#define GEN1_GPIO_EXP_OUTPUT4		0x0c
+#define GEN1_GPIO_EXP_OUTPUT5		0x0d
+#define GEN1_GPIO_EXP_PORT_SELECT	0x18
+#define GEN1_GPIO_EXP_PORT_DIR		0x1c
+
+/* NXP PCAL9535A registers */
+#define GEN2_GPIO_EXP_INPUT0		0x00
+#define GEN2_GPIO_EXP_INPUT1		0x01
+#define GEN2_GPIO_EXP_OUTPUT0		0x02
+#define GEN2_GPIO_EXP_OUTPUT1		0x03
+#define GEN2_GPIO_EXP_POLARITY0		0x04
+#define GEN2_GPIO_EXP_POLARITY1		0x05
+#define GEN2_GPIO_EXP_CONFIG0		0x06
+#define GEN2_GPIO_EXP_CONFIG1		0x07
+#define GEN2_GPIO_EXP_INPUT_LATCH0	0x44
+#define GEN2_GPIO_EXP_INPUT_LATCH1	0x45
+#define GEN2_GPIO_EXP_PULL_UP_DOWN_EN0	0x46
+#define GEN2_GPIO_EXP_PULL_UP_DOWN_EN1	0x47
+#define GEN2_GPIO_EXP_PULL_UP_DOWN_SEL0	0x46
+#define GEN2_GPIO_EXP_PULL_UP_DOWN_SEL1	0x47
+
+#define MAINBOARD_ACCESS(cmd_, reg_, size_, mask_, value_, timeout_, reg_set_) \
+	_REG_SCRIPT_ENCODE_RAW(REG_SCRIPT_COMMAND_##cmd_, MAINBOARD_TYPE,      \
+			       size_, reg_, mask_, value_, timeout_, reg_set_)
+
+/* I2C chip register access macros */
+#define REG_I2C_ACCESS(cmd_, reg_, mask_, value_, timeout_, slave_addr_) \
+	MAINBOARD_ACCESS(cmd_, reg_, REG_SCRIPT_SIZE_8, mask_, value_,   \
+		timeout_, slave_addr_)
+#define REG_I2C_READ(slave_addr_, reg_) \
+	REG_I2C_ACCESS(READ, reg_, 0, 0, 0, slave_addr_)
+#define REG_I2C_WRITE(slave_addr_, reg_, value_) \
+	REG_I2C_ACCESS(WRITE, reg_, 0, value_, 0, slave_addr_)
+#define REG_I2C_AND(slave_addr_, reg_, value_) \
+	REG_I2C_RMW(slave_addr_, reg_, value_, 0)
+#define REG_I2C_RMW(slave_addr_, reg_, mask_, value_) \
+	REG_I2C_ACCESS(RMW, reg_, mask_, value_, 0, slave_addr_)
+#define REG_I2C_RXW(slave_addr_, reg_, mask_, value_) \
+	REG_I2C_ACCESS(RXW, reg_, mask_, value_, 0, slave_addr_)
+#define REG_I2C_OR(slave_addr_, reg_, value_) \
+	REG_I2C_RMW(slave_addr_, reg_, 0xff, value_)
+#define REG_I2C_POLL(slave_addr_, reg_, mask_, value_, timeout_) \
+	REG_I2C_ACCESS(POLL, reg_, mask_, value_, timeout_, slave_addr_)
+#define REG_I2C_XOR(slave_addr_, reg_, value_) \
+	REG_I2C_RXW(slave_addr_, reg_, 0xff, value_)
+
+#endif /* _GALILEO_REG_ACCESS_H_ */