[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>

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 = {

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;