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authorGreg Ungerer <gerg@snapgear.com>2008-02-01 17:34:15 +1000
committerLinus Torvalds <torvalds@linux-foundation.org>2008-02-01 20:54:03 +1100
commit4b61a353e4c893ea07ff5a812de8c0894ed5982f (patch)
tree9331a9ac544b8cd42c9b03ad5ed0b7d500e24430 /arch/m68knommu/platform
parentcf64c233839e97221d63ed7887b59196c8c748c3 (diff)
downloadlinux-linaro-4b61a353e4c893ea07ff5a812de8c0894ed5982f.tar.gz
m68knommu: platform setup for 523x ColdFire parts
Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m68knommu/platform')
-rw-r--r--arch/m68knommu/platform/523x/config.c75
1 files changed, 65 insertions, 10 deletions
diff --git a/arch/m68knommu/platform/523x/config.c b/arch/m68knommu/platform/523x/config.c
index e7f80c8e863..13f02611ea2 100644
--- a/arch/m68knommu/platform/523x/config.c
+++ b/arch/m68knommu/platform/523x/config.c
@@ -16,11 +16,11 @@
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
-#include <asm/dma.h>
+#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
-#include <asm/mcfdma.h>
+#include <asm/mcfuart.h>
/***************************************************************************/
@@ -28,14 +28,58 @@ void coldfire_reset(void);
/***************************************************************************/
-/*
- * DMA channel base address table.
- */
-unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
- MCF_MBAR + MCFDMA_BASE0,
+static struct mcf_platform_uart m523x_uart_platform[] = {
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE1,
+ .irq = MCFINT_VECBASE + MCFINT_UART0,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE2,
+ .irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE3,
+ .irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
+ },
+ { },
+};
+
+static struct platform_device m523x_uart = {
+ .name = "mcfuart",
+ .id = 0,
+ .dev.platform_data = m523x_uart_platform,
+};
+
+static struct platform_device *m523x_devices[] __initdata = {
+ &m523x_uart,
};
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+/***************************************************************************/
+
+#define INTC0 (MCF_MBAR + MCFICM_INTC0)
+
+static void __init m523x_uart_init_line(int line, int irq)
+{
+ u32 imr;
+
+ if ((line < 0) || (line > 2))
+ return;
+
+ writeb(0x30+line, (INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line));
+
+ imr = readl(INTC0 + MCFINTC_IMRL);
+ imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
+ writel(imr, INTC0 + MCFINTC_IMRL);
+}
+
+static void __init m523x_uarts_init(void)
+{
+ const int nrlines = ARRAY_SIZE(m523x_uart_platform);
+ int line;
+
+ for (line = 0; (line < nrlines); line++)
+ m523x_uart_init_line(line, m523x_uart_platform[line].irq);
+}
/***************************************************************************/
@@ -49,15 +93,26 @@ void mcf_disableall(void)
void mcf_autovector(unsigned int vec)
{
- /* Everything is auto-vectored on the 5272 */
+ /* Everything is auto-vectored on the 523x */
}
/***************************************************************************/
-void config_BSP(char *commandp, int size)
+void __init config_BSP(char *commandp, int size)
{
mcf_disableall();
mach_reset = coldfire_reset;
+ m523x_uarts_init();
}
/***************************************************************************/
+
+static int __init init_BSP(void)
+{
+ platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_devices));
+ return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/