u-boot/arch/m68k/cpu/mcf5227x/dspi.c
Angelo Dureghello 196afe62d6 m68k: add dspi chip-select support
Signed-off-by: Angelo Dureghello <angelo@sysam.it>

Changes for v5:
- new patch
2019-05-24 08:11:59 -04:00

43 lines
876 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2019
* Angelo Dureghello <angleo@sysam.it>
*
* CPU specific dspi routines
*/
#include <common.h>
#include <asm/immap.h>
#include <asm/io.h>
#ifdef CONFIG_CF_DSPI
void dspi_chip_select(int cs)
{
struct gpio *gpio = (struct gpio *)MMAP_GPIO;
switch (cs) {
case 0:
clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_UNMASK);
setbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0);
break;
case 2:
clrbits_8(&gpio->par_timer, ~GPIO_PAR_TIMER_T2IN_UNMASK);
setbits_8(&gpio->par_timer, GPIO_PAR_TIMER_T2IN_DSPIPCS2);
break;
}
}
void dspi_chip_unselect(int cs)
{
struct gpio *gpio = (struct gpio *)MMAP_GPIO;
switch (cs) {
case 0:
clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0);
break;
case 2:
clrbits_8(&gpio->par_timer, ~GPIO_PAR_TIMER_T2IN_UNMASK);
break;
}
}
#endif /* CONFIG_CF_DSPI */