ARM: imx: dynamically register imx-uart devices (imx1)
[linux-2.6.git] / arch / arm / mach-imx / mach-scb9328.c
1 /*
2  * linux/arch/arm/mach-mx1/mach-scb9328.c
3  *
4  * Copyright (c) 2004 Sascha Hauer <saschahauer@web.de>
5  * Copyright (c) 2006-2008 Juergen Beisert <jbeisert@netscape.net>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  *
11  */
12
13 #include <linux/platform_device.h>
14 #include <linux/mtd/physmap.h>
15 #include <linux/interrupt.h>
16 #include <linux/dm9000.h>
17
18 #include <asm/mach-types.h>
19 #include <asm/mach/arch.h>
20 #include <asm/mach/time.h>
21
22 #include <mach/common.h>
23 #include <mach/hardware.h>
24 #include <mach/irqs.h>
25 #include <mach/iomux-mx1.h>
26
27 #include "devices-imx1.h"
28 #include "devices.h"
29
30 /*
31  * This scb9328 has a 32MiB flash
32  */
33 static struct resource flash_resource = {
34         .start  = MX1_CS0_PHYS,
35         .end    = MX1_CS0_PHYS + (32 * 1024 * 1024) - 1,
36         .flags  = IORESOURCE_MEM,
37 };
38
39 static struct physmap_flash_data scb_flash_data = {
40         .width  = 2,
41 };
42
43 static struct platform_device scb_flash_device = {
44         .name           = "physmap-flash",
45         .id             = 0,
46         .dev = {
47                 .platform_data = &scb_flash_data,
48         },
49         .resource = &flash_resource,
50         .num_resources = 1,
51 };
52
53 /*
54  * scb9328 has a DM9000 network controller
55  * connected to CS5, with 16 bit data path
56  * and interrupt connected to GPIO 3
57  */
58
59 /*
60  * internal datapath is fixed 16 bit
61  */
62 static struct dm9000_plat_data dm9000_platdata = {
63         .flags  = DM9000_PLATF_16BITONLY,
64 };
65
66 /*
67  * the DM9000 drivers wants two defined address spaces
68  * to gain access to address latch registers and the data path.
69  */
70 static struct resource dm9000x_resources[] = {
71         {
72                 .name   = "address area",
73                 .start  = MX1_CS5_PHYS,
74                 .end    = MX1_CS5_PHYS + 1,
75                 .flags  = IORESOURCE_MEM,       /* address access */
76         }, {
77                 .name   = "data area",
78                 .start  = MX1_CS5_PHYS + 4,
79                 .end    = MX1_CS5_PHYS + 5,
80                 .flags  = IORESOURCE_MEM,       /* data access */
81         }, {
82                 .start  = IRQ_GPIOC(3),
83                 .end    = IRQ_GPIOC(3),
84                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
85         },
86 };
87
88 static struct platform_device dm9000x_device = {
89         .name           = "dm9000",
90         .id             = 0,
91         .num_resources  = ARRAY_SIZE(dm9000x_resources),
92         .resource       = dm9000x_resources,
93         .dev            = {
94                 .platform_data = &dm9000_platdata,
95         }
96 };
97
98 static int mxc_uart1_pins[] = {
99         PC9_PF_UART1_CTS,
100         PC10_PF_UART1_RTS,
101         PC11_PF_UART1_TXD,
102         PC12_PF_UART1_RXD,
103 };
104
105 static int uart1_mxc_init(struct platform_device *pdev)
106 {
107         return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
108                         ARRAY_SIZE(mxc_uart1_pins), "UART1");
109 }
110
111 static void uart1_mxc_exit(struct platform_device *pdev)
112 {
113         mxc_gpio_release_multiple_pins(mxc_uart1_pins,
114                         ARRAY_SIZE(mxc_uart1_pins));
115 }
116
117 static const struct imxuart_platform_data uart_pdata __initconst = {
118         .init = uart1_mxc_init,
119         .exit = uart1_mxc_exit,
120         .flags = IMXUART_HAVE_RTSCTS,
121 };
122
123 static struct platform_device *devices[] __initdata = {
124         &scb_flash_device,
125         &dm9000x_device,
126 };
127
128 /*
129  * scb9328_init - Init the CPU card itself
130  */
131 static void __init scb9328_init(void)
132 {
133         imx1_add_imx_uart0(&uart_pdata);
134
135         printk(KERN_INFO"Scb9328: Adding devices\n");
136         platform_add_devices(devices, ARRAY_SIZE(devices));
137 }
138
139 static void __init scb9328_timer_init(void)
140 {
141         mx1_clocks_init(32000);
142 }
143
144 static struct sys_timer scb9328_timer = {
145         .init   = scb9328_timer_init,
146 };
147
148 MACHINE_START(SCB9328, "Synertronixx scb9328")
149     /* Sascha Hauer */
150         .phys_io        = 0x00200000,
151         .io_pg_offst    = ((0xe0200000) >> 18) & 0xfffc,
152         .boot_params    = 0x08000100,
153         .map_io         = mx1_map_io,
154         .init_irq       = mx1_init_irq,
155         .timer          = &scb9328_timer,
156         .init_machine   = scb9328_init,
157 MACHINE_END