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>

1 files changed, 75 insertions, 0 deletions

diff --git a/include/ds4510.h b/include/ds4510.h
new file mode 100644
index 0000000000..40480afc96
--- /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_ */