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author | Wolfram Sang <wsa@the-dreams.de> | 2017-11-13 20:27:39 +0300 |
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committer | Robert Jarzmik <robert.jarzmik@free.fr> | 2017-11-29 00:49:30 +0300 |
commit | f15fc9b12286f64c2b9a8b90f2bcb94915b2c18b (patch) | |
tree | 077687ee5cd9dd06754d0017753c6358643b32df /include/linux/platform_data/i2c-pxa.h | |
parent | cb74dc3ba2ba9390572c3b6a8f9780b00f02036e (diff) | |
download | linux-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.h | 74 |
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 |