Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7dabb9ad8de527c3afef055a3ea18d027a4cca63
Commit:     7dabb9ad8de527c3afef055a3ea18d027a4cca63
Parent:     4b61a353e4c893ea07ff5a812de8c0894ed5982f
Author:     Greg Ungerer <[EMAIL PROTECTED]>
AuthorDate: Fri Feb 1 17:34:10 2008 +1000
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri Feb 1 20:54:03 2008 +1100

    m68knommu: platform setup for 520x ColdFire parts
    
    Switch to platform style configuration for 520x ColdFire parts.
    Initial support is for the UARTs. DMA support moved to common code
    for all ColdFire parts.
    
    Signed-off-by: Greg Ungerer <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 arch/m68knommu/platform/520x/config.c |  101 ++++++++++++++++++++++++++++++---
 1 files changed, 92 insertions(+), 9 deletions(-)

diff --git a/arch/m68knommu/platform/520x/config.c 
b/arch/m68knommu/platform/520x/config.c
index 6edbd41..06d887c 100644
--- a/arch/m68knommu/platform/520x/config.c
+++ b/arch/m68knommu/platform/520x/config.c
@@ -5,7 +5,7 @@
  *
  *  Copyright (C) 2005,      Freescale (www.freescale.com)
  *  Copyright (C) 2005,      Intec Automation ([EMAIL PROTECTED])
- *  Copyright (C) 1999-2003, Greg Ungerer ([EMAIL PROTECTED])
+ *  Copyright (C) 1999-2007, Greg Ungerer ([EMAIL PROTECTED])
  *  Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
  */
 
@@ -13,21 +13,93 @@
 
 #include <linux/kernel.h>
 #include <linux/param.h>
+#include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/io.h>
 #include <asm/machdep.h>
-#include <asm/dma.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfuart.h>
 
 /***************************************************************************/
 
-/*
- *     DMA channel base address table.
- */
-unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS];
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+void coldfire_reset(void);
 
 /***************************************************************************/
 
-void coldfire_reset(void);
+static struct mcf_platform_uart m520x_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,
+       },
+       { },
+};
+
+static struct platform_device m520x_uart = {
+       .name                   = "mcfuart",
+       .id                     = 0,
+       .dev.platform_data      = m520x_uart_platform,
+};
+
+static struct platform_device *m520x_devices[] __initdata = {
+       &m520x_uart,
+};
+
+/***************************************************************************/
+
+#define        INTC0   (MCF_MBAR + MCFICM_INTC0)
+
+static void __init m520x_uart_init_line(int line, int irq)
+{
+       u32 imr;
+       u16 par;
+       u8 par2;
+
+       writeb(0x03, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
+
+       imr = readl(INTC0 + MCFINTC_IMRL);
+       imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
+       writel(imr, INTC0 + MCFINTC_IMRL);
+
+       switch (line) {
+       case 0:
+               par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
+               par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
+                      MCF_GPIO_PAR_UART_PAR_URXD0;
+               writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
+               break;
+       case 1:
+               par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
+               par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
+                      MCF_GPIO_PAR_UART_PAR_URXD1;
+               writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
+               break;
+       case 2:
+               par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
+               par2 &= ~0x0F;
+               par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
+                       MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
+               writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
+               break;
+       }
+}
+
+static void __init m520x_uarts_init(void)
+{
+       const int nrlines = ARRAY_SIZE(m520x_uart_platform);
+       int line;
+
+       for (line = 0; (line < nrlines); line++)
+               m520x_uart_init_line(line, m520x_uart_platform[line].irq);
+}
 
 /***************************************************************************/
 
@@ -42,9 +114,20 @@ void mcf_autovector(unsigned int vec)
 
 /***************************************************************************/
 
-void config_BSP(char *commandp, int size)
+void __init config_BSP(char *commandp, int size)
 {
        mach_reset = coldfire_reset;
+       m520x_uarts_init();
 }
 
 /***************************************************************************/
+
+static int __init init_BSP(void)
+{
+       platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
+       return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/
-
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