[ARM] 3863/1: Add Locomo SPI Device

The Locomo chip has a SPI interface which is used for SD/MMC cards (only collie).
This patch adds the definition for the SPI device inside the Locomo chip.

Signed-off-by: Dirk Opfer <Dirk@Opfer-Online.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index c46dc65ec79a6322147844bf16b6da5c12a47381..181ef1ead5b8362e1bef5fabe94f2659befceced 100644 (file)
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -121,6 +121,13 @@ static struct locomo_dev_info locomo_devices[] = {
                .offset         = 0,
                .length         = 0,
        },
+       {
+               .devid          = LOCOMO_DEVID_SPI,
+               .irq            = {},
+               .name           = "locomo-spi",
+               .offset         = LOCOMO_SPI,
+               .length         = 0x30,
+       },
 };
 
 
@@ -374,7 +381,7 @@ static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc,
        struct irqdesc *d;
        void __iomem *mapbase = get_irq_chipdata(irq);
 
-       req = locomo_readl(mapbase + LOCOMO_SPIIR) & 0x000F;
+       req = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIR) & 0x000F;
        if (req) {
                irq = LOCOMO_IRQ_SPI_START;
                d = irq_desc + irq;
@@ -391,35 +398,35 @@ static void locomo_spi_ack_irq(unsigned int irq)
 {
        void __iomem *mapbase = get_irq_chipdata(irq);
        unsigned int r;
-       r = locomo_readl(mapbase + LOCOMO_SPIWE);
+       r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIWE);
        r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START));
-       locomo_writel(r, mapbase + LOCOMO_SPIWE);
+       locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIWE);
 
-       r = locomo_readl(mapbase + LOCOMO_SPIIS);
+       r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIS);
        r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START));
-       locomo_writel(r, mapbase + LOCOMO_SPIIS);
+       locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIIS);
 
-       r = locomo_readl(mapbase + LOCOMO_SPIWE);
+       r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIWE);
        r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START));
-       locomo_writel(r, mapbase + LOCOMO_SPIWE);
+       locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIWE);
 }
 
 static void locomo_spi_mask_irq(unsigned int irq)
 {
        void __iomem *mapbase = get_irq_chipdata(irq);
        unsigned int r;
-       r = locomo_readl(mapbase + LOCOMO_SPIIE);
+       r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIE);
        r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START));
-       locomo_writel(r, mapbase + LOCOMO_SPIIE);
+       locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIIE);
 }
 
 static void locomo_spi_unmask_irq(unsigned int irq)
 {
        void __iomem *mapbase = get_irq_chipdata(irq);
        unsigned int r;
-       r = locomo_readl(mapbase + LOCOMO_SPIIE);
+       r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIE);
        r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START));
-       locomo_writel(r, mapbase + LOCOMO_SPIIE);
+       locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIIE);
 }
 
 static struct irq_chip locomo_spi_chip = {

diff --git a/include/asm-arm/hardware/locomo.h b/include/asm-arm/hardware/locomo.h
index 2599a6bc70e41e1c938a04b1d8d4828387ed066e..adab77780ed3afe2522c1b2cb34fb7ae05b222d4 100644 (file)
--- a/include/asm-arm/hardware/locomo.h
+++ b/include/asm-arm/hardware/locomo.h
@@ -54,17 +54,18 @@
 #define        LOCOMO_DAC_SDAOEB       0x01    /* SDA pin output data       */
 
 /* SPI interface */
-#define LOCOMO_SPIMD   0x60            /* SPI mode setting */
-#define LOCOMO_SPICT   0x64            /* SPI mode control */
-#define LOCOMO_SPIST   0x68            /* SPI status */
-#define LOCOMO_SPIIS   0x70            /* SPI interrupt status */
-#define LOCOMO_SPIWE   0x74            /* SPI interrupt status write enable */
-#define LOCOMO_SPIIE   0x78            /* SPI interrupt enable */
-#define LOCOMO_SPIIR   0x7c            /* SPI interrupt request */
-#define LOCOMO_SPITD   0x80            /* SPI transfer data write */
-#define LOCOMO_SPIRD   0x84            /* SPI receive data read */
-#define LOCOMO_SPITS   0x88            /* SPI transfer data shift */
-#define LOCOMO_SPIRS   0x8C            /* SPI receive data shift */
+#define LOCOMO_SPI     0x60
+#define LOCOMO_SPIMD   0x00            /* SPI mode setting */
+#define LOCOMO_SPICT   0x04            /* SPI mode control */
+#define LOCOMO_SPIST   0x08            /* SPI status */
+#define LOCOMO_SPIIS   0x10            /* SPI interrupt status */
+#define LOCOMO_SPIWE   0x14            /* SPI interrupt status write enable */
+#define LOCOMO_SPIIE   0x18            /* SPI interrupt enable */
+#define LOCOMO_SPIIR   0x1c            /* SPI interrupt request */
+#define LOCOMO_SPITD   0x20            /* SPI transfer data write */
+#define LOCOMO_SPIRD   0x24            /* SPI receive data read */
+#define LOCOMO_SPITS   0x28            /* SPI transfer data shift */
+#define LOCOMO_SPIRS   0x2C            /* SPI receive data shift */
 #define        LOCOMO_SPI_TEND (1 << 3)        /* Transfer end bit */
 #define        LOCOMO_SPI_OVRN (1 << 2)        /* Over Run bit */
 #define        LOCOMO_SPI_RFW  (1 << 1)        /* write buffer bit */
@@ -161,6 +162,7 @@ extern struct bus_type locomo_bus_type;
 #define LOCOMO_DEVID_AUDIO     3
 #define LOCOMO_DEVID_LED       4
 #define LOCOMO_DEVID_UART      5
+#define LOCOMO_DEVID_SPI               6
 
 struct locomo_dev {
        struct device   dev;