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authorWolfram Sang <wsa@the-dreams.de>2017-11-13 20:27:39 +0300
committerRobert Jarzmik <robert.jarzmik@free.fr>2017-11-29 00:49:30 +0300
commitf15fc9b12286f64c2b9a8b90f2bcb94915b2c18b (patch)
tree077687ee5cd9dd06754d0017753c6358643b32df /include/linux/platform_data/i2c-pxa.h
parentcb74dc3ba2ba9390572c3b6a8f9780b00f02036e (diff)
downloadlinux-f15fc9b12286f64c2b9a8b90f2bcb94915b2c18b.tar.xz
ARM: pxa: move header file out of I2C realm
include/linux/i2c is to be deprecated. Move this platform_data to the proper platform_data dir. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Diffstat (limited to 'include/linux/platform_data/i2c-pxa.h')
-rw-r--r--include/linux/platform_data/i2c-pxa.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/include/linux/platform_data/i2c-pxa.h b/include/linux/platform_data/i2c-pxa.h
new file mode 100644
index 000000000000..5236f216dfae
--- /dev/null
+++ b/include/linux/platform_data/i2c-pxa.h
@@ -0,0 +1,74 @@
+/*
+ * i2c_pxa.h
+ *
+ * Copyright (C) 2002 Intrinsyc Software 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.
+ *
+ */
+#ifndef _I2C_PXA_H_
+#define _I2C_PXA_H_
+
+#if 0
+#define DEF_TIMEOUT 3
+#else
+/* need a longer timeout if we're dealing with the fact we may well be
+ * looking at a multi-master environment
+*/
+#define DEF_TIMEOUT 32
+#endif
+
+#define BUS_ERROR (-EREMOTEIO)
+#define XFER_NAKED (-ECONNREFUSED)
+#define I2C_RETRY (-2000) /* an error has occurred retry transmit */
+
+/* ICR initialize bit values
+*
+* 15. FM 0 (100 Khz operation)
+* 14. UR 0 (No unit reset)
+* 13. SADIE 0 (Disables the unit from interrupting on slave addresses
+* matching its slave address)
+* 12. ALDIE 0 (Disables the unit from interrupt when it loses arbitration
+* in master mode)
+* 11. SSDIE 0 (Disables interrupts from a slave stop detected, in slave mode)
+* 10. BEIE 1 (Enable interrupts from detected bus errors, no ACK sent)
+* 9. IRFIE 1 (Enable interrupts from full buffer received)
+* 8. ITEIE 1 (Enables the I2C unit to interrupt when transmit buffer empty)
+* 7. GCD 1 (Disables i2c unit response to general call messages as a slave)
+* 6. IUE 0 (Disable unit until we change settings)
+* 5. SCLE 1 (Enables the i2c clock output for master mode (drives SCL)
+* 4. MA 0 (Only send stop with the ICR stop bit)
+* 3. TB 0 (We are not transmitting a byte initially)
+* 2. ACKNAK 0 (Send an ACK after the unit receives a byte)
+* 1. STOP 0 (Do not send a STOP)
+* 0. START 0 (Do not send a START)
+*
+*/
+#define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE)
+
+/* I2C status register init values
+ *
+ * 10. BED 1 (Clear bus error detected)
+ * 9. SAD 1 (Clear slave address detected)
+ * 7. IRF 1 (Clear IDBR Receive Full)
+ * 6. ITE 1 (Clear IDBR Transmit Empty)
+ * 5. ALD 1 (Clear Arbitration Loss Detected)
+ * 4. SSD 1 (Clear Slave Stop Detected)
+ */
+#define I2C_ISR_INIT 0x7FF /* status register init */
+
+struct i2c_slave_client;
+
+struct i2c_pxa_platform_data {
+ unsigned int slave_addr;
+ struct i2c_slave_client *slave;
+ unsigned int class;
+ unsigned int use_pio :1;
+ unsigned int fast_mode :1;
+ unsigned int high_mode:1;
+ unsigned char master_code;
+ unsigned long rate;
+};
+#endif