Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / i2c / algos / i2c-algo-pcf.h

diff --git a/kernel/drivers/i2c/algos/i2c-algo-pcf.h b/kernel/drivers/i2c/algos/i2c-algo-pcf.h
new file mode 100644 (file)
index 0000000..262ee80
--- /dev/null
+++ b/kernel/drivers/i2c/algos/i2c-algo-pcf.h
@@ -0,0 +1,72 @@
+/* -------------------------------------------------------------------- */
+/* i2c-pcf8584.h: PCF 8584 global defines                              */
+/* -------------------------------------------------------------------- */
+/*   Copyright (C) 1996 Simon G. Vogl
+                   1999 Hans Berglund
+
+    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.                       */
+/* --------------------------------------------------------------------        */
+
+/* With some changes from Frodo Looijaard <frodol@dds.nl> */
+
+#ifndef I2C_PCF8584_H
+#define I2C_PCF8584_H 1
+
+/* ----- Control register bits ----------------------------------------        */
+#define I2C_PCF_PIN    0x80
+#define I2C_PCF_ESO    0x40
+#define I2C_PCF_ES1    0x20
+#define I2C_PCF_ES2    0x10
+#define I2C_PCF_ENI    0x08
+#define I2C_PCF_STA    0x04
+#define I2C_PCF_STO    0x02
+#define I2C_PCF_ACK    0x01
+
+#define I2C_PCF_START    (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
+#define I2C_PCF_STOP     (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK)
+#define I2C_PCF_REPSTART (              I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
+#define I2C_PCF_IDLE     (I2C_PCF_PIN | I2C_PCF_ESO               | I2C_PCF_ACK)
+
+/* ----- Status register bits -----------------------------------------        */
+/*#define I2C_PCF_PIN  0x80    as above*/
+
+#define I2C_PCF_INI 0x40   /* 1 if not initialized */
+#define I2C_PCF_STS 0x20
+#define I2C_PCF_BER 0x10
+#define I2C_PCF_AD0 0x08
+#define I2C_PCF_LRB 0x08
+#define I2C_PCF_AAS 0x04
+#define I2C_PCF_LAB 0x02
+#define I2C_PCF_BB  0x01
+
+/* ----- Chip clock frequencies ---------------------------------------        */
+#define I2C_PCF_CLK3   0x00
+#define I2C_PCF_CLK443 0x10
+#define I2C_PCF_CLK6   0x14
+#define I2C_PCF_CLK    0x18
+#define I2C_PCF_CLK12  0x1c
+
+/* ----- transmission frequencies -------------------------------------        */
+#define I2C_PCF_TRNS90 0x00    /*  90 kHz */
+#define I2C_PCF_TRNS45 0x01    /*  45 kHz */
+#define I2C_PCF_TRNS11 0x02    /*  11 kHz */
+#define I2C_PCF_TRNS15 0x03    /* 1.5 kHz */
+
+
+/* ----- Access to internal registers according to ES1,ES2 ------------        */
+/* they are mapped to the data port ( a0 = 0 )                                 */
+/* available when ESO == 0 :                                           */
+
+#define I2C_PCF_OWNADR 0
+#define I2C_PCF_INTREG I2C_PCF_ES2
+#define I2C_PCF_CLKREG I2C_PCF_ES1
+
+#endif /* I2C_PCF8584_H */