diff options
Diffstat (limited to 'include/asm-arm/arch-pxa')
| -rw-r--r-- | include/asm-arm/arch-pxa/hardware.h | 18 | ||||
| -rw-r--r-- | include/asm-arm/arch-pxa/i2c.h | 70 | ||||
| -rw-r--r-- | include/asm-arm/arch-pxa/mmc.h | 1 |
3 files changed, 74 insertions, 15 deletions
diff --git a/include/asm-arm/arch-pxa/hardware.h b/include/asm-arm/arch-pxa/hardware.h index 72b04d846a2..cf35721cfa4 100644 --- a/include/asm-arm/arch-pxa/hardware.h +++ b/include/asm-arm/arch-pxa/hardware.h @@ -44,24 +44,12 @@ #ifndef __ASSEMBLY__ -#if 0 -# define __REG(x) (*((volatile u32 *)io_p2v(x))) -#else -/* - * This __REG() version gives the same results as the one above, except - * that we are fooling gcc somehow so it generates far better and smaller - * assembly code for access to contigous registers. It's a shame that gcc - * doesn't guess this by itself. - */ -#include <asm/types.h> -typedef struct { volatile u32 offset[4096]; } __regbase; -# define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] -# define __REG(x) __REGP(io_p2v(x)) -#endif +# define __REG(x) (*((volatile unsigned long *)io_p2v(x))) /* With indexed regs we don't want to feed the index through io_p2v() especially if it is a variable, otherwise horrible code will result. */ -# define __REG2(x,y) (*(volatile u32 *)((u32)&__REG(x) + (y))) +# define __REG2(x,y) \ + (*(volatile unsigned long *)((unsigned long)&__REG(x) + (y))) # define __PREG(x) (io_v2p((u32)&(x))) diff --git a/include/asm-arm/arch-pxa/i2c.h b/include/asm-arm/arch-pxa/i2c.h new file mode 100644 index 00000000000..46ec2243974 --- /dev/null +++ b/include/asm-arm/arch-pxa/i2c.h @@ -0,0 +1,70 @@ +/* + * 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; +}; + +extern void pxa_set_i2c_info(struct i2c_pxa_platform_data *info); +#endif diff --git a/include/asm-arm/arch-pxa/mmc.h b/include/asm-arm/arch-pxa/mmc.h index 9718063a211..88c17dd02ed 100644 --- a/include/asm-arm/arch-pxa/mmc.h +++ b/include/asm-arm/arch-pxa/mmc.h @@ -9,6 +9,7 @@ struct mmc_host; struct pxamci_platform_data { unsigned int ocr_mask; /* available voltages */ + unsigned long detect_delay; /* delay in jiffies before detecting cards after interrupt */ int (*init)(struct device *, irqreturn_t (*)(int, void *, struct pt_regs *), void *); int (*get_ro)(struct device *); void (*setpower)(struct device *, unsigned int); |