diff options
Diffstat (limited to 'arch/m68knommu/platform/528x/config.c')
| -rw-r--r-- | arch/m68knommu/platform/528x/config.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/528x/config.c b/arch/m68knommu/platform/528x/config.c index 6e608d1836f..76b743343bf 100644 --- a/arch/m68knommu/platform/528x/config.c +++ b/arch/m68knommu/platform/528x/config.c @@ -17,10 +17,13 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> #include <asm/machdep.h> #include <asm/coldfire.h> #include <asm/mcfsim.h> #include <asm/mcfuart.h> +#include <asm/mcfqspi.h> /***************************************************************************/ @@ -76,10 +79,141 @@ static struct platform_device m528x_fec = { .resource = m528x_fec_resources, }; +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m528x_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINT_VECBASE + MCFINT_QSPI, + .end = MCFINT_VECBASE + MCFINT_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#define MCFQSPI_CS0 147 +#define MCFQSPI_CS1 148 +#define MCFQSPI_CS2 149 +#define MCFQSPI_CS3 150 + +static int m528x_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS3 failed\n"); + goto fail3; + } + status = gpio_direction_output(MCFQSPI_CS3, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n"); + goto fail4; + } + + return 0; + +fail4: + gpio_free(MCFQSPI_CS3); +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m528x_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS3); + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m528x_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + gpio_set_value(MCFQSPI_CS0 + chip_select, cs_high); +} + +static void m528x_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + gpio_set_value(MCFQSPI_CS0 + chip_select, !cs_high); +} + +static struct mcfqspi_cs_control m528x_cs_control = { + .setup = m528x_cs_setup, + .teardown = m528x_cs_teardown, + .select = m528x_cs_select, + .deselect = m528x_cs_deselect, +}; + +static struct mcfqspi_platform_data m528x_qspi_data = { + .bus_num = 0, + .num_chipselect = 4, + .cs_control = &m528x_cs_control, +}; + +static struct platform_device m528x_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m528x_qspi_resources), + .resource = m528x_qspi_resources, + .dev.platform_data = &m528x_qspi_data, +}; + +static void __init m528x_qspi_init(void) +{ + /* setup Port QS for QSPI with gpio CS control */ + __raw_writeb(0x07, MCFGPIO_PQSPAR); +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ static struct platform_device *m528x_devices[] __initdata = { &m528x_uart, &m528x_fec, +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m528x_qspi, +#endif }; /***************************************************************************/ @@ -174,6 +308,9 @@ static int __init init_BSP(void) mach_reset = m528x_cpu_reset; m528x_uarts_init(); m528x_fec_init(); +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m528x_qspi_init(); +#endif platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices)); return 0; } |