diff options
| author | Angelo Dureghello <angelo@sysam.it> | 2019-03-13 21:46:53 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-05-24 08:11:59 -0400 |
| commit | 196afe62d6b3e720295bbda046d260ccc6292a28 (patch) | |
| tree | e169db6609ab6add1b2c0f917cbc12ba733025da /arch/m68k/cpu/mcf5445x/dspi.c | |
| parent | cd3b0717ba9875b3978bdc0835ee82415d766f29 (diff) | |
| download | u-boot-196afe62d6b3e720295bbda046d260ccc6292a28.tar.gz | |
m68k: add dspi chip-select support
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Changes for v5:
- new patch
Diffstat (limited to 'arch/m68k/cpu/mcf5445x/dspi.c')
| -rw-r--r-- | arch/m68k/cpu/mcf5445x/dspi.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/m68k/cpu/mcf5445x/dspi.c b/arch/m68k/cpu/mcf5445x/dspi.c new file mode 100644 index 0000000000..b0e2f2cb01 --- /dev/null +++ b/arch/m68k/cpu/mcf5445x/dspi.c @@ -0,0 +1,88 @@ +// 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; + +#ifdef CONFIG_MCF5445x + switch (cs) { + case 0: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0); + setbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0); + break; + case 1: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS1_PCS1); + setbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS1_PCS1); + break; + case 2: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS2_PCS2); + setbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS2_PCS2); + break; + case 3: + clrbits_8(&gpio->par_dma, ~GPIO_PAR_DMA_DACK0_UNMASK); + setbits_8(&gpio->par_dma, GPIO_PAR_DMA_DACK0_PCS3); + break; + case 5: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS5_PCS5); + setbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS5_PCS5); + break; + } +#endif +#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_MCF5445x + switch (cs) { + case 0: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0); + break; + case 1: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS1_PCS1); + break; + case 2: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS2_PCS2); + break; + case 3: + clrbits_8(&gpio->par_dma, ~GPIO_PAR_DMA_DACK0_UNMASK); + break; + case 5: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS5_PCS5); + break; + } +#endif +#ifdef CONFIG_MCF5441x + if (cs == 1) + clrbits_8(&gpio->par_dspiow, GPIO_PAR_DSPIOW_DSPI0PSC1); +#endif +} +#endif /* CONFIG_CF_DSPI */ |