[U-Boot] [PATCH 5/7] Add basic support for Freescale's mc9sdz60

Stefano Babic
2011-01-14T13:35:22Z

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: Stefano Babic <sbabic@denx.de>
---
drivers/misc/Makefile | 1 +
drivers/misc/mc9sdz60.c | 51 ++++++++++++++++++++++++++++
include/mc9sdz60.h | 84 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 136 insertions(+), 0 deletions(-)
create mode 100644 drivers/misc/mc9sdz60.c
create mode 100644 include/mc9sdz60.h

diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index a76bd4e..311c373 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -32,6 +32,7 @@ COBJS-$(CONFIG_GPIO_LED) += gpio_led.o
COBJS-$(CONFIG_NS87308) += ns87308.o
COBJS-$(CONFIG_STATUS_LED) += status_led.o
COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o
+COBJS-$(CONFIG_FSL_MC9SDZ60) += mc9sdz60.o
COBJS-$(CONFIG_FSL_PMIC) += fsl_pmic.o
COBJS-$(CONFIG_PDSP188x) += pdsp188x.o

diff --git a/drivers/misc/mc9sdz60.c b/drivers/misc/mc9sdz60.c
new file mode 100644
index 0000000..439d5a6
--- /dev/null
+++ b/drivers/misc/mc9sdz60.c
@@ -0,0 +1,51 @@
+/*
+ * (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);
+}
diff --git a/include/mc9sdz60.h b/include/mc9sdz60.h
new file mode 100644
index 0000000..31b894c
--- /dev/null
+++ b/include/mc9sdz60.h
@@ -0,0 +1,84 @@
+/*
+ * 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 */
--
1.7.1