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| author | Peter Tyser <ptyser@xes-inc.com> | 2008-12-17 16:36:22 -0600 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-01-24 01:47:50 +0100 |
| commit | a7c9310457e85b4598abe5b304108edf11332e2f (patch) | |
| tree | 24a13a1a1e37eccd2186da96bb3a8ac263a92209 /include/ds4510.h | |
| parent | b6fc6fd49a84543e1324e1620b9f301ff7c1f27f (diff) | |
| download | u-boot-imx-a7c9310457e85b4598abe5b304108edf11332e2f.zip u-boot-imx-a7c9310457e85b4598abe5b304108edf11332e2f.tar.gz u-boot-imx-a7c9310457e85b4598abe5b304108edf11332e2f.tar.bz2 | |
Add support for Maxim's DS4510 I2C device
Initial support for the DS4510, a CPU supervisor with
integrated EEPROM, SRAM, and 4 programmable non-volatile
GPIO pins. The CONFIG_DS4510 define enables support
for the device while the CONFIG_CMD_DS4510 define
enables the ds4510 command. The additional
CONFIG_DS4510_INFO, CONFIG_DS4510_MEM, and
CONFIG_DS4510_RST defines add additional sub-commands
to the ds4510 command when defined.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'include/ds4510.h')
| -rw-r--r-- | include/ds4510.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/ds4510.h b/include/ds4510.h new file mode 100644 index 0000000..40480af --- /dev/null +++ b/include/ds4510.h @@ -0,0 +1,75 @@ +/* + * Copyright 2008 Extreme Engineering Solutions, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * Version 2 as published by the Free Software Foundation. + * + * 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 __DS4510_H_ +#define __DS4510_H_ + +/* General defines */ +#define DS4510_NUM_IO 0x04 +#define DS4510_IO_MASK ((1 << DS4510_NUM_IO) - 1) +#define DS4510_EEPROM_PAGE_WRITE_DELAY_MS 20 + +/* EEPROM from 0x00 - 0x39 */ +#define DS4510_EEPROM 0x00 +#define DS4510_EEPROM_SIZE 0x40 +#define DS4510_EEPROM_PAGE_SIZE 0x08 +#define DS4510_EEPROM_PAGE_OFFSET(x) ((x) & (DS4510_EEPROM_PAGE_SIZE - 1)) + +/* SEEPROM from 0xf0 - 0xf7 */ +#define DS4510_SEEPROM 0xf0 +#define DS4510_SEEPROM_SIZE 0x08 + +/* Registers overlapping SEEPROM from 0xf0 - 0xf7 */ +#define DS4510_PULLUP 0xF0 +#define DS4510_PULLUP_DIS 0x00 +#define DS4510_PULLUP_EN 0x01 +#define DS4510_RSTDELAY 0xF1 +#define DS4510_RSTDELAY_MASK 0x03 +#define DS4510_RSTDELAY_125 0x00 +#define DS4510_RSTDELAY_250 0x01 +#define DS4510_RSTDELAY_500 0x02 +#define DS4510_RSTDELAY_1000 0x03 +#define DS4510_IO3 0xF4 +#define DS4510_IO2 0xF5 +#define DS4510_IO1 0xF6 +#define DS4510_IO0 0xF7 + +/* Status configuration registers from 0xf8 - 0xf9*/ +#define DS4510_IO_STATUS 0xF8 +#define DS4510_CFG 0xF9 +#define DS4510_CFG_READY 0x80 +#define DS4510_CFG_TRIP_POINT 0x40 +#define DS4510_CFG_RESET 0x20 +#define DS4510_CFG_SEE 0x10 +#define DS4510_CFG_SWRST 0x08 + +/* SRAM from 0xfa - 0xff */ +#define DS4510_SRAM 0xfa +#define DS4510_SRAM_SIZE 0x06 + +int ds4510_mem_write(uint8_t chip, int offset, uint8_t *buf, int count); +int ds4510_mem_read(uint8_t chip, int offset, uint8_t *buf, int count); +int ds4510_see_write(uint8_t chip, uint8_t nv); +int ds4510_rstdelay_write(uint8_t chip, uint8_t delay); +int ds4510_pullup_write(uint8_t chip, uint8_t val); +int ds4510_pullup_read(uint8_t chip); +int ds4510_gpio_write(uint8_t chip, uint8_t val); +int ds4510_gpio_read(uint8_t chip); +int ds4510_gpio_read_val(uint8_t chip); + +#endif /* __DS4510_H_ */ |