DS2781 Maxim Stand-Alone Fuel Gauge battery and w1 slave drivers
Signed-off-by: Renata Sayakhova <rsayakhova@gmail.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/w1/slaves/w1_ds2781.h b/drivers/w1/slaves/w1_ds2781.h
new file mode 100644
index 0000000..82bc664
--- /dev/null
+++ b/drivers/w1/slaves/w1_ds2781.h
@@ -0,0 +1,136 @@
+/*
+ * 1-Wire implementation for the ds2780 chip
+ *
+ * Author: Renata Sayakhova <renata@oktetlabs.ru>
+ *
+ * Based on w1-ds2760 driver
+ *
+ * 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.
+ *
+ */
+
+#ifndef _W1_DS2781_H
+#define _W1_DS2781_H
+
+/* Function commands */
+#define W1_DS2781_READ_DATA 0x69
+#define W1_DS2781_WRITE_DATA 0x6C
+#define W1_DS2781_COPY_DATA 0x48
+#define W1_DS2781_RECALL_DATA 0xB8
+#define W1_DS2781_LOCK 0x6A
+
+/* Register map */
+/* Register 0x00 Reserved */
+#define DS2781_STATUS 0x01
+#define DS2781_RAAC_MSB 0x02
+#define DS2781_RAAC_LSB 0x03
+#define DS2781_RSAC_MSB 0x04
+#define DS2781_RSAC_LSB 0x05
+#define DS2781_RARC 0x06
+#define DS2781_RSRC 0x07
+#define DS2781_IAVG_MSB 0x08
+#define DS2781_IAVG_LSB 0x09
+#define DS2781_TEMP_MSB 0x0A
+#define DS2781_TEMP_LSB 0x0B
+#define DS2781_VOLT_MSB 0x0C
+#define DS2781_VOLT_LSB 0x0D
+#define DS2781_CURRENT_MSB 0x0E
+#define DS2781_CURRENT_LSB 0x0F
+#define DS2781_ACR_MSB 0x10
+#define DS2781_ACR_LSB 0x11
+#define DS2781_ACRL_MSB 0x12
+#define DS2781_ACRL_LSB 0x13
+#define DS2781_AS 0x14
+#define DS2781_SFR 0x15
+#define DS2781_FULL_MSB 0x16
+#define DS2781_FULL_LSB 0x17
+#define DS2781_AE_MSB 0x18
+#define DS2781_AE_LSB 0x19
+#define DS2781_SE_MSB 0x1A
+#define DS2781_SE_LSB 0x1B
+/* Register 0x1C - 0x1E Reserved */
+#define DS2781_EEPROM 0x1F
+#define DS2781_EEPROM_BLOCK0_START 0x20
+/* Register 0x20 - 0x2F User EEPROM */
+#define DS2781_EEPROM_BLOCK0_END 0x2F
+/* Register 0x30 - 0x5F Reserved */
+#define DS2781_EEPROM_BLOCK1_START 0x60
+#define DS2781_CONTROL 0x60
+#define DS2781_AB 0x61
+#define DS2781_AC_MSB 0x62
+#define DS2781_AC_LSB 0x63
+#define DS2781_VCHG 0x64
+#define DS2781_IMIN 0x65
+#define DS2781_VAE 0x66
+#define DS2781_IAE 0x67
+#define DS2781_AE_40 0x68
+#define DS2781_RSNSP 0x69
+#define DS2781_FULL_40_MSB 0x6A
+#define DS2781_FULL_40_LSB 0x6B
+#define DS2781_FULL_4_SLOPE 0x6C
+#define DS2781_FULL_3_SLOPE 0x6D
+#define DS2781_FULL_2_SLOPE 0x6E
+#define DS2781_FULL_1_SLOPE 0x6F
+#define DS2781_AE_4_SLOPE 0x70
+#define DS2781_AE_3_SLOPE 0x71
+#define DS2781_AE_2_SLOPE 0x72
+#define DS2781_AE_1_SLOPE 0x73
+#define DS2781_SE_4_SLOPE 0x74
+#define DS2781_SE_3_SLOPE 0x75
+#define DS2781_SE_2_SLOPE 0x76
+#define DS2781_SE_1_SLOPE 0x77
+#define DS2781_RSGAIN_MSB 0x78
+#define DS2781_RSGAIN_LSB 0x79
+#define DS2781_RSTC 0x7A
+#define DS2781_COB 0x7B
+#define DS2781_TBP34 0x7C
+#define DS2781_TBP23 0x7D
+#define DS2781_TBP12 0x7E
+#define DS2781_EEPROM_BLOCK1_END 0x7F
+/* Register 0x7D - 0xFF Reserved */
+
+#define DS2781_FSGAIN_MSB 0xB0
+#define DS2781_FSGAIN_LSB 0xB1
+
+/* Number of valid register addresses */
+#define DS2781_DATA_SIZE 0xB2
+
+/* Status register bits */
+#define DS2781_STATUS_CHGTF (1 << 7)
+#define DS2781_STATUS_AEF (1 << 6)
+#define DS2781_STATUS_SEF (1 << 5)
+#define DS2781_STATUS_LEARNF (1 << 4)
+/* Bit 3 Reserved */
+#define DS2781_STATUS_UVF (1 << 2)
+#define DS2781_STATUS_PORF (1 << 1)
+/* Bit 0 Reserved */
+
+/* Control register bits */
+/* Bit 7 Reserved */
+#define DS2781_CONTROL_NBEN (1 << 7)
+#define DS2781_CONTROL_UVEN (1 << 6)
+#define DS2781_CONTROL_PMOD (1 << 5)
+#define DS2781_CONTROL_RNAOP (1 << 4)
+#define DS1781_CONTROL_UVTH (1 << 3)
+/* Bit 0 - 2 Reserved */
+
+/* Special feature register bits */
+/* Bit 1 - 7 Reserved */
+#define DS2781_SFR_PIOSC (1 << 0)
+
+/* EEPROM register bits */
+#define DS2781_EEPROM_EEC (1 << 7)
+#define DS2781_EEPROM_LOCK (1 << 6)
+/* Bit 2 - 6 Reserved */
+#define DS2781_EEPROM_BL1 (1 << 1)
+#define DS2781_EEPROM_BL0 (1 << 0)
+
+extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
+ int io);
+extern int w1_ds2781_io_nolock(struct device *dev, char *buf, int addr,
+ size_t count, int io);
+extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd);
+
+#endif /* !_W1_DS2781_H */