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-rw-r--r--arch/m68knommu/platform/520x/config.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/520x/config.c b/arch/m68knommu/platform/520x/config.c
index 92614de42cd..71d2ba474c6 100644
--- a/arch/m68knommu/platform/520x/config.c
+++ b/arch/m68knommu/platform/520x/config.c
@@ -15,10 +15,13 @@
#include <linux/param.h>
#include <linux/init.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>
/***************************************************************************/
@@ -74,9 +77,152 @@ static struct platform_device m520x_fec = {
.resource = m520x_fec_resources,
};
+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
+static struct resource m520x_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 62
+#define MCFQSPI_CS1 63
+#define MCFQSPI_CS2 44
+
+static int m520x_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;
+ }
+
+ return 0;
+
+fail3:
+ gpio_free(MCFQSPI_CS2);
+fail2:
+ gpio_free(MCFQSPI_CS1);
+fail1:
+ gpio_free(MCFQSPI_CS0);
+fail0:
+ return status;
+}
+
+static void m520x_cs_teardown(struct mcfqspi_cs_control *cs_control)
+{
+ gpio_free(MCFQSPI_CS2);
+ gpio_free(MCFQSPI_CS1);
+ gpio_free(MCFQSPI_CS0);
+}
+
+static void m520x_cs_select(struct mcfqspi_cs_control *cs_control,
+ u8 chip_select, bool cs_high)
+{
+ switch (chip_select) {
+ case 0:
+ gpio_set_value(MCFQSPI_CS0, cs_high);
+ break;
+ case 1:
+ gpio_set_value(MCFQSPI_CS1, cs_high);
+ break;
+ case 2:
+ gpio_set_value(MCFQSPI_CS2, cs_high);
+ break;
+ }
+}
+
+static void m520x_cs_deselect(struct mcfqspi_cs_control *cs_control,
+ u8 chip_select, bool cs_high)
+{
+ switch (chip_select) {
+ case 0:
+ gpio_set_value(MCFQSPI_CS0, !cs_high);
+ break;
+ case 1:
+ gpio_set_value(MCFQSPI_CS1, !cs_high);
+ break;
+ case 2:
+ gpio_set_value(MCFQSPI_CS2, !cs_high);
+ break;
+ }
+}
+
+static struct mcfqspi_cs_control m520x_cs_control = {
+ .setup = m520x_cs_setup,
+ .teardown = m520x_cs_teardown,
+ .select = m520x_cs_select,
+ .deselect = m520x_cs_deselect,
+};
+
+static struct mcfqspi_platform_data m520x_qspi_data = {
+ .bus_num = 0,
+ .num_chipselect = 3,
+ .cs_control = &m520x_cs_control,
+};
+
+static struct platform_device m520x_qspi = {
+ .name = "mcfqspi",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(m520x_qspi_resources),
+ .resource = m520x_qspi_resources,
+ .dev.platform_data = &m520x_qspi_data,
+};
+
+static void __init m520x_qspi_init(void)
+{
+ u16 par;
+ /* setup Port QS for QSPI with gpio CS control */
+ writeb(0x3f, MCF_IPSBAR + MCF_GPIO_PAR_QSPI);
+ /* make U1CTS and U2RTS gpio for cs_control */
+ par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
+ par &= 0x00ff;
+ writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
+}
+#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */
+
+
static struct platform_device *m520x_devices[] __initdata = {
&m520x_uart,
&m520x_fec,
+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
+ &m520x_qspi,
+#endif
};
/***************************************************************************/
@@ -147,6 +293,9 @@ void __init config_BSP(char *commandp, int size)
mach_reset = m520x_cpu_reset;
m520x_uarts_init();
m520x_fec_init();
+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
+ m520x_qspi_init();
+#endif
}
/***************************************************************************/