ARM: pxa: Access SMEMC via virtual addresses
[linux-2.6.git] / arch / arm / mach-pxa / xcep.c
1 /*  linux/arch/arm/mach-pxa/xcep.c
2  *
3  *  Support for the Iskratel Electronics XCEP platform as used in
4  *  the Libera instruments from Instrumentation Technologies.
5  *
6  *  Author:     Ales Bardorfer <ales@i-tech.si>
7  *  Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
8  *  Contributions by: Matej Kenda <matej.kenda@i-tech.si>
9  *  Created:    June 2006
10  *  Copyright:  (C) 2006-2009 Instrumentation Technologies
11  *
12  *  This program is free software; you can redistribute it and/or modify
13  *  it under the terms of the GNU General Public License version 2 as
14  *  published by the Free Software Foundation.
15  */
16
17 #include <linux/platform_device.h>
18 #include <linux/i2c.h>
19 #include <linux/smc91x.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/partitions.h>
22 #include <linux/mtd/physmap.h>
23
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/irq.h>
27 #include <asm/mach/map.h>
28
29 #include <plat/i2c.h>
30
31 #include <mach/hardware.h>
32 #include <mach/pxa2xx-regs.h>
33 #include <mach/mfp-pxa25x.h>
34 #include <mach/smemc.h>
35
36 #include "generic.h"
37
38 #define XCEP_ETH_PHYS           (PXA_CS3_PHYS + 0x00000300)
39 #define XCEP_ETH_PHYS_END       (PXA_CS3_PHYS + 0x000fffff)
40 #define XCEP_ETH_ATTR           (PXA_CS3_PHYS + 0x02000000)
41 #define XCEP_ETH_ATTR_END       (PXA_CS3_PHYS + 0x020fffff)
42 #define XCEP_ETH_IRQ            IRQ_GPIO0
43
44 /*  XCEP CPLD base */
45 #define XCEP_CPLD_BASE          0xf0000000
46
47
48 /* Flash partitions. */
49
50 static struct mtd_partition xcep_partitions[] = {
51         {
52                 .name =         "Bootloader",
53                 .size =         0x00040000,
54                 .offset =       0,
55                 .mask_flags =   MTD_WRITEABLE
56         }, {
57                 .name =         "Bootloader ENV",
58                 .size =         0x00040000,
59                 .offset =       0x00040000,
60                 .mask_flags =   MTD_WRITEABLE
61         }, {
62                 .name =         "Kernel",
63                 .size =         0x00100000,
64                 .offset =       0x00080000,
65         }, {
66                 .name =         "Rescue fs",
67                 .size =         0x00280000,
68                 .offset =       0x00180000,
69         }, {
70                 .name =         "Filesystem",
71                 .size =         MTDPART_SIZ_FULL,
72                 .offset =       0x00400000
73         }
74 };
75
76 static struct physmap_flash_data xcep_flash_data[] = {
77         {
78                 .width          = 4,            /* bankwidth in bytes */
79                 .parts          = xcep_partitions,
80                 .nr_parts       = ARRAY_SIZE(xcep_partitions)
81         }
82 };
83
84 static struct resource flash_resource = {
85         .start  = PXA_CS0_PHYS,
86         .end    = PXA_CS0_PHYS + SZ_32M - 1,
87         .flags  = IORESOURCE_MEM,
88 };
89
90 static struct platform_device flash_device = {
91         .name   = "physmap-flash",
92         .id     = 0,
93         .dev    = {
94                 .platform_data = xcep_flash_data,
95         },
96         .resource = &flash_resource,
97         .num_resources = 1,
98 };
99
100
101
102 /* SMC LAN91C111 network controller. */
103
104 static struct resource smc91x_resources[] = {
105         [0] = {
106                 .name   = "smc91x-regs",
107                 .start  = XCEP_ETH_PHYS,
108                 .end    = XCEP_ETH_PHYS_END,
109                 .flags  = IORESOURCE_MEM,
110         },
111         [1] = {
112                 .start  = XCEP_ETH_IRQ,
113                 .end    = XCEP_ETH_IRQ,
114                 .flags  = IORESOURCE_IRQ,
115         },
116         [2] = {
117                 .name   = "smc91x-attrib",
118                 .start  = XCEP_ETH_ATTR,
119                 .end    = XCEP_ETH_ATTR_END,
120                 .flags  = IORESOURCE_MEM,
121         },
122 };
123
124 static struct smc91x_platdata xcep_smc91x_info = {
125         .flags  = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
126 };
127
128 static struct platform_device smc91x_device = {
129         .name           = "smc91x",
130         .id             = -1,
131         .num_resources  = ARRAY_SIZE(smc91x_resources),
132         .resource       = smc91x_resources,
133         .dev            = {
134                 .platform_data = &xcep_smc91x_info,
135         },
136 };
137
138
139 static struct platform_device *devices[] __initdata = {
140         &flash_device,
141         &smc91x_device,
142 };
143
144
145 /* We have to state that there are HWMON devices on the I2C bus on XCEP.
146  * Drivers for HWMON verify capabilities of the adapter when loading and
147  * refuse to attach if the adapter doesn't support HWMON class of devices.
148  * See also Documentation/i2c/porting-clients. */
149 static struct i2c_pxa_platform_data xcep_i2c_platform_data  = {
150         .class = I2C_CLASS_HWMON
151 };
152
153
154 static mfp_cfg_t xcep_pin_config[] __initdata = {
155         GPIO79_nCS_3,   /* SMC 91C111 chip select. */
156         GPIO80_nCS_4,   /* CPLD chip select. */
157         /* SSP communication to MSP430 */
158         GPIO23_SSP1_SCLK,
159         GPIO24_SSP1_SFRM,
160         GPIO25_SSP1_TXD,
161         GPIO26_SSP1_RXD,
162         GPIO27_SSP1_EXTCLK
163 };
164
165 static void __init xcep_init(void)
166 {
167         pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
168
169         pxa_set_ffuart_info(NULL);
170         pxa_set_btuart_info(NULL);
171         pxa_set_stuart_info(NULL);
172         pxa_set_hwuart_info(NULL);
173
174         /* See Intel XScale Developer's Guide for details */
175         /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
176         __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
177         /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
178         __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
179
180         platform_add_devices(ARRAY_AND_SIZE(devices));
181         pxa_set_i2c_info(&xcep_i2c_platform_data);
182 }
183
184 MACHINE_START(XCEP, "Iskratel XCEP")
185         .boot_params    = 0xa0000100,
186         .init_machine   = xcep_init,
187         .map_io         = pxa25x_map_io,
188         .init_irq       = pxa25x_init_irq,
189         .timer          = &pxa_timer,
190 MACHINE_END
191