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/i2c/pxa-i2c.h>
20 #include <linux/smc91x.h>
21 #include <linux/mtd/mtd.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/mtd/physmap.h>
24
25 #include <asm/mach-types.h>
26 #include <asm/mach/arch.h>
27 #include <asm/mach/irq.h>
28 #include <asm/mach/map.h>
29
30 #include <mach/hardware.h>
31 #include <mach/pxa25x.h>
32 #include <mach/smemc.h>
33
34 #include "generic.h"
35
36 #define XCEP_ETH_PHYS (PXA_CS3_PHYS + 0x00000300)
37 #define XCEP_ETH_PHYS_END (PXA_CS3_PHYS + 0x000fffff)
38 #define XCEP_ETH_ATTR (PXA_CS3_PHYS + 0x02000000)
39 #define XCEP_ETH_ATTR_END (PXA_CS3_PHYS + 0x020fffff)
40 #define XCEP_ETH_IRQ IRQ_GPIO0
41
42 /* XCEP CPLD base */
43 #define XCEP_CPLD_BASE 0xf0000000
44
45
46 /* Flash partitions. */
47
48 static struct mtd_partition xcep_partitions[] = {
49 {
50 .name = "Bootloader",
51 .size = 0x00040000,
52 .offset = 0,
53 .mask_flags = MTD_WRITEABLE
54 }, {
55 .name = "Bootloader ENV",
56 .size = 0x00040000,
57 .offset = 0x00040000,
58 .mask_flags = MTD_WRITEABLE
59 }, {
60 .name = "Kernel",
61 .size = 0x00100000,
62 .offset = 0x00080000,
63 }, {
64 .name = "Rescue fs",
65 .size = 0x00280000,
66 .offset = 0x00180000,
67 }, {
68 .name = "Filesystem",
69 .size = MTDPART_SIZ_FULL,
70 .offset = 0x00400000
71 }
72 };
73
74 static struct physmap_flash_data xcep_flash_data[] = {
75 {
76 .width = 4, /* bankwidth in bytes */
77 .parts = xcep_partitions,
78 .nr_parts = ARRAY_SIZE(xcep_partitions)
79 }
80 };
81
82 static struct resource flash_resource = {
83 .start = PXA_CS0_PHYS,
84 .end = PXA_CS0_PHYS + SZ_32M - 1,
85 .flags = IORESOURCE_MEM,
86 };
87
88 static struct platform_device flash_device = {
89 .name = "physmap-flash",
90 .id = 0,
91 .dev = {
92 .platform_data = xcep_flash_data,
93 },
94 .resource = &flash_resource,
95 .num_resources = 1,
96 };
97
98
99
100 /* SMC LAN91C111 network controller. */
101
102 static struct resource smc91x_resources[] = {
103 [0] = {
104 .name = "smc91x-regs",
105 .start = XCEP_ETH_PHYS,
106 .end = XCEP_ETH_PHYS_END,
107 .flags = IORESOURCE_MEM,
108 },
109 [1] = {
110 .start = XCEP_ETH_IRQ,
111 .end = XCEP_ETH_IRQ,
112 .flags = IORESOURCE_IRQ,
113 },
114 [2] = {
115 .name = "smc91x-attrib",
116 .start = XCEP_ETH_ATTR,
117 .end = XCEP_ETH_ATTR_END,
118 .flags = IORESOURCE_MEM,
119 },
120 };
121
122 static struct smc91x_platdata xcep_smc91x_info = {
123 .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
124 };
125
126 static struct platform_device smc91x_device = {
127 .name = "smc91x",
128 .id = -1,
129 .num_resources = ARRAY_SIZE(smc91x_resources),
130 .resource = smc91x_resources,
131 .dev = {
132 .platform_data = &xcep_smc91x_info,
133 },
134 };
135
136
137 static struct platform_device *devices[] __initdata = {
138 &flash_device,
139 &smc91x_device,
140 };
141
142
143 /* We have to state that there are HWMON devices on the I2C bus on XCEP.
144 * Drivers for HWMON verify capabilities of the adapter when loading and
145 * refuse to attach if the adapter doesn't support HWMON class of devices. */
146 static struct i2c_pxa_platform_data xcep_i2c_platform_data = {
147 .class = I2C_CLASS_HWMON
148 };
149
150
151 static mfp_cfg_t xcep_pin_config[] __initdata = {
152 GPIO79_nCS_3, /* SMC 91C111 chip select. */
153 GPIO80_nCS_4, /* CPLD chip select. */
154 /* SSP communication to MSP430 */
155 GPIO23_SSP1_SCLK,
156 GPIO24_SSP1_SFRM,
157 GPIO25_SSP1_TXD,
158 GPIO26_SSP1_RXD,
159 GPIO27_SSP1_EXTCLK
160 };
161
xcep_init(void)162 static void __init xcep_init(void)
163 {
164 pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
165
166 pxa_set_ffuart_info(NULL);
167 pxa_set_btuart_info(NULL);
168 pxa_set_stuart_info(NULL);
169 pxa_set_hwuart_info(NULL);
170
171 /* See Intel XScale Developer's Guide for details */
172 /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
173 __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
174 /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
175 __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
176
177 platform_add_devices(ARRAY_AND_SIZE(devices));
178 pxa_set_i2c_info(&xcep_i2c_platform_data);
179 }
180
181 MACHINE_START(XCEP, "Iskratel XCEP")
182 .atag_offset = 0x100,
183 .init_machine = xcep_init,
184 .map_io = pxa25x_map_io,
185 .nr_irqs = PXA_NR_IRQS,
186 .init_irq = pxa25x_init_irq,
187 .handle_irq = pxa25x_handle_irq,
188 .timer = &pxa_timer,
189 .restart = pxa_restart,
190 MACHINE_END
191
192