m68knommu: platform setup for 527x ColdFire parts

Switch to platform style configuration for 527x 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>

diff --git a/arch/m68knommu/platform/527x/config.c b/arch/m68knommu/platform/527x/config.c
index 9cbfbc68ae4f3a083417236191b67c9c983f59c8..73cd1aef4a9020c64133ea3c6b39a30669b2f57d 100644 (file)
--- a/arch/m68knommu/platform/527x/config.c
+++ b/arch/m68knommu/platform/527x/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 +28,72 @@ 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 m527x_uart_platform[] = {
+       {
+               .mapbase        = MCF_MBAR + MCFUART_BASE1,
+               .irq            = MCFINT_VECBASE + MCFINT_UART0,
+       },
+       {
+               .mapbase        = MCF_MBAR + MCFUART_BASE2,
+               .irq            = MCFINT_VECBASE + MCFINT_UART1,
+       },
+       {
+               .mapbase        = MCF_MBAR + MCFUART_BASE3,
+               .irq            = MCFINT_VECBASE + MCFINT_UART2,
+       },
+       { },
 };
 
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+static struct platform_device m527x_uart = {
+       .name                   = "mcfuart",
+       .id                     = 0,
+       .dev.platform_data      = m527x_uart_platform,
+};
+
+static struct platform_device *m527x_devices[] __initdata = {
+       &m527x_uart,
+};
+
+/***************************************************************************/
+
+#define        INTC0   (MCF_MBAR + MCFICM_INTC0)
+
+static void __init m527x_uart_init_line(int line, int irq)
+{
+       u16 sepmask;
+       u32 imr;
+
+       if ((line < 0) || (line > 2))
+               return;
+
+       /* level 6, line based priority */
+       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);
+
+       /*
+        * External Pin Mask Setting & Enable External Pin for Interface
+        */
+       sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
+       if (line == 0)
+               sepmask |= UART0_ENABLE_MASK;
+       else if (line == 1)
+               sepmask |= UART1_ENABLE_MASK;
+       else if (line == 2)
+               sepmask |= UART2_ENABLE_MASK;
+       writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART);
+}
+
+static void __init m527x_uarts_init(void)
+{
+       const int nrlines = ARRAY_SIZE(m527x_uart_platform);
+       int line;
+
+       for (line = 0; (line < nrlines); line++)
+               m527x_uart_init_line(line, m527x_uart_platform[line].irq);
+}
 
 /***************************************************************************/
 
@@ -54,10 +112,21 @@ void mcf_autovector(unsigned int vec)
 
 /***************************************************************************/
 
-void config_BSP(char *commandp, int size)
+void __init config_BSP(char *commandp, int size)
 {
        mcf_disableall();
        mach_reset = coldfire_reset;
 }
 
 /***************************************************************************/
+
+static int __init init_BSP(void)
+{
+       m527x_uarts_init();
+       platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices));
+       return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/