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Message-Id: <200802010734.m117Yw8o022617@goober>
Date: Fri, 1 Feb 2008 17:34:58 +1000
From: Greg Ungerer <gerg@...pgear.com>
To: torvalds@...ux-foundation.org
Cc: gerg@...inux.org, linux-kernel@...r.kernel.org
Subject: [M68KNOMMU]: platform setup for 532x ColdFire parts
Switch to platform style configuration for 532x ColdFire parts.
Initial support is for the UARTs. DMA support moved to common code
for all ColdFire parts.
Signed-off-by: Greg Ungerer <gerg@...inux.org>
---
diff -Naurp linux-2.6.24/arch/m68knommu/platform/532x/config.c linux-2.6.24-uc0/arch/m68knommu/platform/532x/config.c
--- linux-2.6.24/arch/m68knommu/platform/532x/config.c 2008-01-25 08:58:37.000000000 +1000
+++ linux-2.6.24-uc0/arch/m68knommu/platform/532x/config.c 2008-01-11 13:37:38.000000000 +1000
@@ -21,10 +21,11 @@
#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/mcfuart.h>
#include <asm/mcfdma.h>
#include <asm/mcfwdebug.h>
@@ -38,11 +39,60 @@ extern unsigned int mcf_timerlevel;
/***************************************************************************/
-/*
- * DMA channel base address table.
- */
-unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { };
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+static struct mcf_platform_uart m532x_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 m532x_uart = {
+ .name = "mcfuart",
+ .id = 0,
+ .dev.platform_data = m532x_uart_platform,
+};
+
+static struct platform_device *m532x_devices[] __initdata = {
+ &m532x_uart,
+};
+
+/***************************************************************************/
+
+static void __init m532x_uart_init_line(int line, int irq)
+{
+ if (line == 0) {
+ MCF_INTC0_ICR26 = 0x3;
+ MCF_INTC0_CIMR = 26;
+ /* GPIO initialization */
+ MCF_GPIO_PAR_UART |= 0x000F;
+ } else if (line == 1) {
+ MCF_INTC0_ICR27 = 0x3;
+ MCF_INTC0_CIMR = 27;
+ /* GPIO initialization */
+ MCF_GPIO_PAR_UART |= 0x0FF0;
+ } else if (line == 2) {
+ MCF_INTC0_ICR28 = 0x3;
+ MCF_INTC0_CIMR = 28;
+ }
+}
+
+static void __init m532x_uarts_init(void)
+{
+ const int nrlines = ARRAY_SIZE(m532x_uart_platform);
+ int line;
+
+ for (line = 0; (line < nrlines); line++)
+ m532x_uart_init_line(line, m532x_uart_platform[line].irq);
+}
/***************************************************************************/
@@ -80,7 +130,7 @@ int mcf_timerirqpending(int timer)
/***************************************************************************/
-void config_BSP(char *commandp, int size)
+void __init config_BSP(char *commandp, int size)
{
mcf_setimr(MCFSIM_IMR_MASKALL);
@@ -99,7 +149,7 @@ void config_BSP(char *commandp, int size
mcf_profilevector = 64+33;
mach_reset = coldfire_reset;
-#ifdef MCF_BDM_DISABLE
+#ifdef CONFIG_BDM_DISABLE
/*
* Disable the BDM clocking. This also turns off most of the rest of
* the BDM device. This is good for EMC reasons. This option is not
@@ -110,9 +160,19 @@ void config_BSP(char *commandp, int size
}
/***************************************************************************/
-/* Board initialization */
-/********************************************************************/
+static int __init init_BSP(void)
+{
+ m532x_uarts_init();
+ platform_add_devices(m532x_devices, ARRAY_SIZE(m532x_devices));
+ return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/
+/* Board initialization */
+/***************************************************************************/
/*
* PLL min/max specifications
*/
--
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