Add basic support for Freescale's mc9sdz60

The patch adds helper funtions for basic access to the registers
of the MC9sdz60 chip (multifunctional device with RTC and CAN) via
I2C interface.
Signed-off-by: NStefano Babic <sbabic@denx.de>

drivers/misc/Makefile

@@ -28,12 +28,13 @@ LIB	:= $(obj)libmisc.o
 COBJS-$(CONFIG_ALI152X) += ali512x.o
 COBJS-$(CONFIG_DS4510)  += ds4510.o
 COBJS-$(CONFIG_FSL_LAW) += fsl_law.o
+COBJS-$(CONFIG_FSL_PMIC) += fsl_pmic.o
 COBJS-$(CONFIG_GPIO_LED) += gpio_led.o
+COBJS-$(CONFIG_FSL_MC9SDZ60) += mc9sdz60.o
 COBJS-$(CONFIG_NS87308) += ns87308.o
+COBJS-$(CONFIG_PDSP188x) += pdsp188x.o
 COBJS-$(CONFIG_STATUS_LED) += status_led.o
 COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o
-COBJS-$(CONFIG_FSL_PMIC) += fsl_pmic.o
-COBJS-$(CONFIG_PDSP188x) += pdsp188x.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)

drivers/misc/mc9sdz60.c

+/*
+ * (C) Copyright 2010 Stefano Babic <sbabic@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#include <config.h>
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/types.h>
+#include <i2c.h>
+#include <mc9sdz60.h>
+
+#ifndef CONFIG_SYS_FSL_MC9SDZ60_I2C_ADDR
+#error "You have to configure I2C address for MC9SDZ60"
+#endif
+
+
+u8 mc9sdz60_reg_read(enum mc9sdz60_reg reg)
+{
+	u8 val;
+
+	if (i2c_read(CONFIG_SYS_FSL_MC9SDZ60_I2C_ADDR, reg, 1, &val, 1)) {
+		puts("Error reading MC9SDZ60 register\n");
+		return -1;
+	}
+
+	return val;
+}
+
+void mc9sdz60_reg_write(enum mc9sdz60_reg reg, u8 val)
+{
+	i2c_write(CONFIG_SYS_FSL_MC9SDZ60_I2C_ADDR, reg, 1, &val, 1);
+}

include/mc9sdz60.h

+/*
+ * Copyright (C) 2009 Marc Kleine-Budde <mkl@pengutronix.de>
+ *
+ * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __ASM_ARCH_MC9SDZ60_H
+#define __ASM_ARCH_MC9SDZ60_H
+
+/**
+ * Register addresses for the MC9SDZ60
+ *
+ * @note: these match those in the kernel drivers/mxc/mcu_pmic/mc9s08dz60.h
+ * but not include/linux/mfd/mc9s08dz60/pmic.h
+ *
+ */
+enum mc9sdz60_reg {
+	MC9SDZ60_REG_VERSION		= 0x00,
+	/* reserved                       0x01 */
+	MC9SDZ60_REG_SECS		= 0x02,
+	MC9SDZ60_REG_MINS		= 0x03,
+	MC9SDZ60_REG_HRS		= 0x04,
+	MC9SDZ60_REG_DAY		= 0x05,
+	MC9SDZ60_REG_DATE		= 0x06,
+	MC9SDZ60_REG_MONTH		= 0x07,
+	MC9SDZ60_REG_YEAR		= 0x08,
+	MC9SDZ60_REG_ALARM_SECS		= 0x09,
+	MC9SDZ60_REG_ALARM_MINS		= 0x0a,
+	MC9SDZ60_REG_ALARM_HRS		= 0x0b,
+	/* reserved                       0x0c */
+	/* reserved                       0x0d */
+	MC9SDZ60_REG_TS_CONTROL		= 0x0e,
+	MC9SDZ60_REG_X_LOW		= 0x0f,
+	MC9SDZ60_REG_Y_LOW		= 0x10,
+	MC9SDZ60_REG_XY_HIGH		= 0x11,
+	MC9SDZ60_REG_X_LEFT_LOW		= 0x12,
+	MC9SDZ60_REG_X_LEFT_HIGH	= 0x13,
+	MC9SDZ60_REG_X_RIGHT		= 0x14,
+	MC9SDZ60_REG_Y_TOP_LOW		= 0x15,
+	MC9SDZ60_REG_Y_TOP_HIGH		= 0x16,
+	MC9SDZ60_REG_Y_BOTTOM		= 0x17,
+	/* reserved                       0x18 */
+	/* reserved                       0x19 */
+	MC9SDZ60_REG_RESET_1		= 0x1a,
+	MC9SDZ60_REG_RESET_2		= 0x1b,
+	MC9SDZ60_REG_POWER_CTL		= 0x1c,
+	MC9SDZ60_REG_DELAY_CONFIG	= 0x1d,
+	/* reserved                       0x1e */
+	/* reserved                       0x1f */
+	MC9SDZ60_REG_GPIO_1		= 0x20,
+	MC9SDZ60_REG_GPIO_2		= 0x21,
+	MC9SDZ60_REG_KPD_1		= 0x22,
+	MC9SDZ60_REG_KPD_2		= 0x23,
+	MC9SDZ60_REG_KPD_CONTROL	= 0x24,
+	MC9SDZ60_REG_INT_ENABLE_1	= 0x25,
+	MC9SDZ60_REG_INT_ENABLE_2	= 0x26,
+	MC9SDZ60_REG_INT_FLAG_1		= 0x27,
+	MC9SDZ60_REG_INT_FLAG_2		= 0x28,
+	MC9SDZ60_REG_DES_FLAG		= 0x29,
+};
+
+extern u8 mc9sdz60_reg_read(enum mc9sdz60_reg reg);
+extern void mc9sdz60_reg_write(enum mc9sdz60_reg reg, u8 val);
+
+#endif /* __ASM_ARCH_MC9SDZ60_H */