Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

[pandora-kernel.git] / arch / m68knommu / platform / 523x / config.c

diff --git a/arch/m68knommu/platform/523x/config.c b/arch/m68knommu/platform/523x/config.c
index 6ba84f2..8980f6d 100644 (file)
--- a/arch/m68knommu/platform/523x/config.c
+++ b/arch/m68knommu/platform/523x/config.c
@@ -16,10 +16,13 @@
 #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>
 
 /***************************************************************************/
 
@@ -75,9 +78,173 @@ static struct platform_device m523x_fec = {
        .resource               = m523x_fec_resources,
 };
 
+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
+static struct resource m523x_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    91
+#define MCFQSPI_CS1    92
+#define MCFQSPI_CS2    103
+#define MCFQSPI_CS3    99
+
+static int m523x_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 m523x_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 m523x_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;
+       case 3:
+               gpio_set_value(MCFQSPI_CS3, cs_high);
+               break;
+       }
+}
+
+static void m523x_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;
+       case 3:
+               gpio_set_value(MCFQSPI_CS3, !cs_high);
+               break;
+       }
+}
+
+static struct mcfqspi_cs_control m523x_cs_control = {
+       .setup                  = m523x_cs_setup,
+       .teardown               = m523x_cs_teardown,
+       .select                 = m523x_cs_select,
+       .deselect               = m523x_cs_deselect,
+};
+
+static struct mcfqspi_platform_data m523x_qspi_data = {
+       .bus_num                = 0,
+       .num_chipselect         = 4,
+       .cs_control             = &m523x_cs_control,
+};
+
+static struct platform_device m523x_qspi = {
+       .name                   = "mcfqspi",
+       .id                     = 0,
+       .num_resources          = ARRAY_SIZE(m523x_qspi_resources),
+       .resource               = m523x_qspi_resources,
+       .dev.platform_data      = &m523x_qspi_data,
+};
+
+static void __init m523x_qspi_init(void)
+{
+       u16 par;
+
+       /* setup QSPS pins for QSPI with gpio CS control */
+       writeb(0x1f, MCFGPIO_PAR_QSPI);
+       /* and CS2 & CS3 as gpio */
+       par = readw(MCFGPIO_PAR_TIMER);
+       par &= 0x3f3f;
+       writew(par, MCFGPIO_PAR_TIMER);
+}
+#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */
+
 static struct platform_device *m523x_devices[] __initdata = {
        &m523x_uart,
        &m523x_fec,
+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
+       &m523x_qspi,
+#endif
 };
 
 /***************************************************************************/
@@ -114,6 +281,9 @@ void __init config_BSP(char *commandp, int size)
 static int __init init_BSP(void)
 {
        m523x_fec_init();
+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
+       m523x_qspi_init();
+#endif
        platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_devices));
        return 0;
 }