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 */