72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* ssp.h
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$Id$
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written by Marc Singer
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6 Dec 2004
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Copyright (C) 2004 Marc Singer
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-----------
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DESCRIPTION
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-----------
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This SSP header is available throughout the kernel, for this
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machine/architecture, because drivers that use it may be dispersed.
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This file was cloned from the 7952x implementation. It would be
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better to share them, but we're taking an easier approach for the
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time being.
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*/
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#if !defined (__SSP_H__)
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# define __SSP_H__
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/* ----- Includes */
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/* ----- Types */
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struct ssp_driver {
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int (*init) (void);
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void (*exit) (void);
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void (*acquire) (void);
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void (*release) (void);
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int (*configure) (int device, int mode, int speed,
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int frame_size_write, int frame_size_read);
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void (*chip_select) (int enable);
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void (*set_callbacks) (void* handle,
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irqreturn_t (*callback_tx)(void*),
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irqreturn_t (*callback_rx)(void*));
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void (*enable) (void);
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void (*disable) (void);
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// int (*save_state) (void*);
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// void (*restore_state) (void*);
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int (*read) (void);
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int (*write) (u16 data);
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int (*write_read) (u16 data);
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void (*flush) (void);
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void (*write_async) (void* pv, size_t cb);
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size_t (*write_pos) (void);
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};
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/* These modes are only available on the LH79524 */
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#define SSP_MODE_SPI (1)
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#define SSP_MODE_SSI (2)
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#define SSP_MODE_MICROWIRE (3)
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#define SSP_MODE_I2S (4)
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/* CPLD SPI devices */
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#define DEVICE_EEPROM 0 /* Configuration eeprom */
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#define DEVICE_MAC 1 /* MAC eeprom (LPD79524) */
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#define DEVICE_CODEC 2 /* Audio codec */
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#define DEVICE_TOUCH 3 /* Touch screen (LPD79520) */
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/* ----- Globals */
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/* ----- Prototypes */
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//extern struct ssp_driver lh79520_i2s_driver;
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extern struct ssp_driver lh7a400_cpld_ssp_driver;
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#endif /* __SSP_H__ */
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