diff options
Diffstat (limited to 'arch/m68k/cpu/mcf5445x')
| -rw-r--r-- | arch/m68k/cpu/mcf5445x/Makefile | 2 | ||||
| -rw-r--r-- | arch/m68k/cpu/mcf5445x/dspi.c | 88 |
2 files changed, 89 insertions, 1 deletions
diff --git a/arch/m68k/cpu/mcf5445x/Makefile b/arch/m68k/cpu/mcf5445x/Makefile index be2cb2a6fb..ba90fc3c34 100644 --- a/arch/m68k/cpu/mcf5445x/Makefile +++ b/arch/m68k/cpu/mcf5445x/Makefile @@ -6,4 +6,4 @@ # ccflags-y += -DET_DEBUG extra-y = start.o -obj-y = cpu.o speed.o cpu_init.o interrupts.o pci.o +obj-y = cpu.o speed.o cpu_init.o interrupts.o pci.o dspi.o 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 */ |