From 01bb24b6427eb77d8626e0366dc2aebaaab8b40b Mon Sep 17 00:00:00 2001 From: Stefano Babic Date: Wed, 19 Jan 2011 22:46:29 +0000 Subject: [PATCH] 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: Stefano Babic --- drivers/misc/Makefile | 5 +-- drivers/misc/mc9sdz60.c | 51 ++++++++++++++++++++++++++++++ include/mc9sdz60.h | 84 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 138 insertions(+), 2 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..b152486 100644 --- a/drivers/misc/Makefile +++ b/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) 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 + * + * 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 +#include +#include +#include +#include +#include + +#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 + * + * 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 */ -- 2.7.4