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authorGreg Ungerer <gerg@snapgear.com>2008-02-01 02:34:50 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-02-01 04:55:43 -0500
commiteb49e9076141756d6c8fc97663e94eead0d7fc42 (patch)
tree0f4f25315019f813aa6653aaa4c92a4fc896eeb5 /arch/m68knommu
parent5f84bd52f03f8606982c75dfbda8c4cc1b725fee (diff)
m68knommu: platform setup for 528x ColdFire parts
Switch to platform style configuration for 528x 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')
-rw-r--r--arch/m68knommu/platform/528x/config.c86
1 files changed, 77 insertions, 9 deletions
diff --git a/arch/m68knommu/platform/528x/config.c b/arch/m68knommu/platform/528x/config.c
index acbd43486d97..036e1b73d944 100644
--- a/arch/m68knommu/platform/528x/config.c
+++ b/arch/m68knommu/platform/528x/config.c
@@ -16,11 +16,15 @@
16#include <linux/param.h> 16#include <linux/param.h>
17#include <linux/init.h> 17#include <linux/init.h>
18#include <linux/interrupt.h> 18#include <linux/interrupt.h>
19#include <asm/dma.h> 19#include <linux/platform_device.h>
20#include <linux/spi/spi.h>
21#include <linux/spi/flash.h>
22#include <linux/io.h>
20#include <asm/machdep.h> 23#include <asm/machdep.h>
21#include <asm/coldfire.h> 24#include <asm/coldfire.h>
22#include <asm/mcfsim.h> 25#include <asm/mcfsim.h>
23#include <asm/mcfdma.h> 26#include <asm/mcfuart.h>
27#include <asm/mcfqspi.h>
24 28
25/***************************************************************************/ 29/***************************************************************************/
26 30
@@ -28,14 +32,67 @@ void coldfire_reset(void);
28 32
29/***************************************************************************/ 33/***************************************************************************/
30 34
31/* 35static struct mcf_platform_uart m528x_uart_platform[] = {
32 * DMA channel base address table. 36 {
33 */ 37 .mapbase = MCF_MBAR + MCFUART_BASE1,
34unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { 38 .irq = MCFINT_VECBASE + MCFINT_UART0,
35 MCF_MBAR + MCFDMA_BASE0, 39 },
40 {
41 .mapbase = MCF_MBAR + MCFUART_BASE2,
42 .irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
43 },
44 {
45 .mapbase = MCF_MBAR + MCFUART_BASE3,
46 .irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
47 },
48 { },
36}; 49};
37 50
38unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS]; 51static struct platform_device m528x_uart = {
52 .name = "mcfuart",
53 .id = 0,
54 .dev.platform_data = m528x_uart_platform,
55};
56
57static struct platform_device *m528x_devices[] __initdata = {
58 &m528x_uart,
59};
60
61/***************************************************************************/
62
63#define INTC0 (MCF_MBAR + MCFICM_INTC0)
64
65static void __init m528x_uart_init_line(int line, int irq)
66{
67 u8 port;
68 u32 imr;
69
70 if ((line < 0) || (line > 2))
71 return;
72
73 /* level 6, line based priority */
74 writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
75
76 imr = readl(INTC0 + MCFINTC_IMRL);
77 imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
78 writel(imr, INTC0 + MCFINTC_IMRL);
79
80 /* make sure PUAPAR is set for UART0 and UART1 */
81 if (line < 2) {
82 port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR);
83 port |= (0x03 << (line * 2));
84 writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR);
85 }
86}
87
88static void __init m528x_uarts_init(void)
89{
90 const int nrlines = ARRAY_SIZE(m528x_uart_platform);
91 int line;
92
93 for (line = 0; (line < nrlines); line++)
94 m528x_uart_init_line(line, m528x_uart_platform[line].irq);
95}
39 96
40/***************************************************************************/ 97/***************************************************************************/
41 98
@@ -54,10 +111,21 @@ void mcf_autovector(unsigned int vec)
54 111
55/***************************************************************************/ 112/***************************************************************************/
56 113
57void config_BSP(char *commandp, int size) 114void __init config_BSP(char *commandp, int size)
58{ 115{
59 mcf_disableall(); 116 mcf_disableall();
60 mach_reset = coldfire_reset; 117 mach_reset = coldfire_reset;
61} 118}
62 119
63/***************************************************************************/ 120/***************************************************************************/
121
122static int __init init_BSP(void)
123{
124 m528x_uarts_init();
125 platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
126 return 0;
127}
128
129arch_initcall(init_BSP);
130
131/***************************************************************************/