3  *  linux/arch/arm/mach-sa1100/ssp.c
7  *  Generic SSP driver.  This provides the generic core for simple
8  *  IO-based SSP applications.
21 #include <asm/hardware/ssp.h>
30 		printk(KERN_WARNING "SSP: receiver overrun\n");  in ssp_interrupt()
38  * ssp_write_word - write a word to the SSP port
41  * Wait for a free entry in the SSP transmit FIFO, and write a data
42  * word to the SSP port.  Wait for the SSP port to start sending
74  * ssp_read_word - read a word from the SSP port
76  * Wait for a data word in the SSP receive FIFO, and return the
106  * Wait for the SSP to idle, and ensure that the receive FIFO
133  * ssp_enable - enable the SSP port
135  * Turn on the SSP port.
143  * ssp_disable - shut down the SSP port
145  * Turn off the SSP port, optionally powering it down.
153  * ssp_save_state - save the SSP configuration
154  * @ssp: pointer to structure to save SSP configuration
156  * Save the configured SSP state for suspend.
158 void ssp_save_state(struct ssp_state *ssp)  in ssp_save_state()  argument
160 	ssp->cr0 = Ser4SSCR0;  in ssp_save_state()
161 	ssp->cr1 = Ser4SSCR1;  in ssp_save_state()
167  * ssp_restore_state - restore a previously saved SSP configuration
168  * @ssp: pointer to configuration saved by ssp_save_state
170  * Restore the SSP configuration saved previously by ssp_save_state.
172 void ssp_restore_state(struct ssp_state *ssp)  in ssp_restore_state()  argument
176 	Ser4SSCR0 = ssp->cr0 & ~SSCR0_SSE;  in ssp_restore_state()
177 	Ser4SSCR1 = ssp->cr1;  in ssp_restore_state()
178 	Ser4SSCR0 = ssp->cr0;  in ssp_restore_state()
182  * ssp_init - setup the SSP port
184  * initialise and claim resources for the SSP port.
187  *   %-ENODEV	if the SSP port is unavailable
198 	if (!request_mem_region(__PREG(Ser4SSCR0), 0x18, "SSP")) {  in ssp_init()
204 	ret = request_irq(IRQ_Ser4SSP, ssp_interrupt, 0, "SSP", NULL);  in ssp_init()
218  * release and free resources for the SSP port.
229 MODULE_DESCRIPTION("SA11x0 SSP PIO driver");