| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * (C) Copyright 2019 |
| * Angelo Dureghello <angleo@sysam.it> |
| * |
| * CPU specific dspi routines |
| */ |
| |
| #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; |
| |
| #ifdef CONFIG_MCF5441x |
| switch (cs) { |
| case 0: |
| clrbits_8(&gpio->par_dspi0, |
| ~GPIO_PAR_DSPI0_PCS0_MASK); |
| setbits_8(&gpio->par_dspi0, |
| GPIO_PAR_DSPI0_PCS0_DSPI0PCS0); |
| break; |
| case 1: |
| clrbits_8(&gpio->par_dspiow, |
| GPIO_PAR_DSPIOW_DSPI0PSC1); |
| setbits_8(&gpio->par_dspiow, |
| GPIO_PAR_DSPIOW_DSPI0PSC1); |
| break; |
| } |
| #endif |
| } |
| |
| void dspi_chip_unselect(int cs) |
| { |
| struct gpio *gpio = (struct gpio *)MMAP_GPIO; |
| |
| #ifdef CONFIG_MCF5441x |
| if (cs == 1) |
| clrbits_8(&gpio->par_dspiow, GPIO_PAR_DSPIOW_DSPI0PSC1); |
| #endif |
| } |
| #endif /* CONFIG_CF_DSPI */ |