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Diffstat (limited to 'include/asm-mips/tx4938/spi.h')
| -rw-r--r-- | include/asm-mips/tx4938/spi.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/include/asm-mips/tx4938/spi.h b/include/asm-mips/tx4938/spi.h new file mode 100644 index 00000000000..0dbbab820a5 --- /dev/null +++ b/include/asm-mips/tx4938/spi.h @@ -0,0 +1,74 @@ +/* + * linux/include/asm-mips/tx4938/spi.h + * Definitions for TX4937/TX4938 SPI + * + * Copyright (C) 2000-2001 Toshiba Corporation + * + * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the + * terms of the GNU General Public License version 2. This program is + * licensed "as is" without any warranty of any kind, whether express + * or implied. + * + * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) + */ +#ifndef __ASM_TX_BOARDS_TX4938_SPI_H +#define __ASM_TX_BOARDS_TX4938_SPI_H + +/* SPI */ +struct spi_dev_desc { + unsigned int baud; + unsigned short tcss, tcsh, tcsr; /* CS setup/hold/recovery time */ + unsigned int byteorder:1; /* 0:LSB-First, 1:MSB-First */ + unsigned int polarity:1; /* 0:High-Active */ + unsigned int phase:1; /* 0:Sample-Then-Shift */ +}; + +extern void txx9_spi_init(unsigned long base, int (*cs_func)(int chipid, int on)) __init; +extern void txx9_spi_irqinit(int irc_irq) __init; +extern int txx9_spi_io(int chipid, struct spi_dev_desc *desc, + unsigned char **inbufs, unsigned int *incounts, + unsigned char **outbufs, unsigned int *outcounts, + int cansleep); +extern int spi_eeprom_write_enable(int chipid, int enable); +extern int spi_eeprom_read_status(int chipid); +extern int spi_eeprom_read(int chipid, int address, unsigned char *buf, int len); +extern int spi_eeprom_write(int chipid, int address, unsigned char *buf, int len); +extern void spi_eeprom_proc_create(struct proc_dir_entry *dir, int chipid) __init; + +#define TXX9_IMCLK (txx9_gbus_clock / 2) + +/* +* SPI +*/ + +/* SPMCR : SPI Master Control */ +#define TXx9_SPMCR_OPMODE 0xc0 +#define TXx9_SPMCR_CONFIG 0x40 +#define TXx9_SPMCR_ACTIVE 0x80 +#define TXx9_SPMCR_SPSTP 0x02 +#define TXx9_SPMCR_BCLR 0x01 + +/* SPCR0 : SPI Status */ +#define TXx9_SPCR0_TXIFL_MASK 0xc000 +#define TXx9_SPCR0_RXIFL_MASK 0x3000 +#define TXx9_SPCR0_SIDIE 0x0800 +#define TXx9_SPCR0_SOEIE 0x0400 +#define TXx9_SPCR0_RBSIE 0x0200 +#define TXx9_SPCR0_TBSIE 0x0100 +#define TXx9_SPCR0_IFSPSE 0x0010 +#define TXx9_SPCR0_SBOS 0x0004 +#define TXx9_SPCR0_SPHA 0x0002 +#define TXx9_SPCR0_SPOL 0x0001 + +/* SPSR : SPI Status */ +#define TXx9_SPSR_TBSI 0x8000 +#define TXx9_SPSR_RBSI 0x4000 +#define TXx9_SPSR_TBS_MASK 0x3800 +#define TXx9_SPSR_RBS_MASK 0x0700 +#define TXx9_SPSR_SPOE 0x0080 +#define TXx9_SPSR_IFSD 0x0008 +#define TXx9_SPSR_SIDLE 0x0004 +#define TXx9_SPSR_STRDY 0x0002 +#define TXx9_SPSR_SRRDY 0x0001 + +#endif /* __ASM_TX_BOARDS_TX4938_SPI_H */ |