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/platform_data/i2c-pxa.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 "pxa25x.h"
32 #include <mach/smemc.h>
33
34 #include "generic.h"
35 #include "devices.h"
36
37 #define XCEP_ETH_PHYS (PXA_CS3_PHYS + 0x00000300)
38 #define XCEP_ETH_PHYS_END (PXA_CS3_PHYS + 0x000fffff)
39 #define XCEP_ETH_ATTR (PXA_CS3_PHYS + 0x02000000)
40 #define XCEP_ETH_ATTR_END (PXA_CS3_PHYS + 0x020fffff)
41 #define XCEP_ETH_IRQ IRQ_GPIO0
42
43 /* XCEP CPLD base */
44 #define XCEP_CPLD_BASE 0xf0000000
45
46
47 /* Flash partitions. */
48
49 static struct mtd_partition xcep_partitions[] = {
50 {
51 .name = "Bootloader",
52 .size = 0x00040000,
53 .offset = 0,
54 .mask_flags = MTD_WRITEABLE
55 }, {
56 .name = "Bootloader ENV",
57 .size = 0x00040000,
58 .offset = 0x00040000,
59 .mask_flags = MTD_WRITEABLE
60 }, {
61 .name = "Kernel",
62 .size = 0x00100000,
63 .offset = 0x00080000,
64 }, {
65 .name = "Rescue fs",
66 .size = 0x00280000,
67 .offset = 0x00180000,
68 }, {
69 .name = "Filesystem",
70 .size = MTDPART_SIZ_FULL,
71 .offset = 0x00400000
72 }
73 };
74
75 static struct physmap_flash_data xcep_flash_data[] = {
76 {
77 .width = 4, /* bankwidth in bytes */
78 .parts = xcep_partitions,
79 .nr_parts = ARRAY_SIZE(xcep_partitions)
80 }
81 };
82
83 static struct resource flash_resource = {
84 .start = PXA_CS0_PHYS,
85 .end = PXA_CS0_PHYS + SZ_32M - 1,
86 .flags = IORESOURCE_MEM,
87 };
88
89 static struct platform_device flash_device = {
90 .name = "physmap-flash",
91 .id = 0,
92 .dev = {
93 .platform_data = xcep_flash_data,
94 },
95 .resource = &flash_resource,
96 .num_resources = 1,
97 };
98
99
100
101 /* SMC LAN91C111 network controller. */
102
103 static struct resource smc91x_resources[] = {
104 [0] = {
105 .name = "smc91x-regs",
106 .start = XCEP_ETH_PHYS,
107 .end = XCEP_ETH_PHYS_END,
108 .flags = IORESOURCE_MEM,
109 },
110 [1] = {
111 .start = XCEP_ETH_IRQ,
112 .end = XCEP_ETH_IRQ,
113 .flags = IORESOURCE_IRQ,
114 },
115 [2] = {
116 .name = "smc91x-attrib",
117 .start = XCEP_ETH_ATTR,
118 .end = XCEP_ETH_ATTR_END,
119 .flags = IORESOURCE_MEM,
120 },
121 };
122
123 static struct smc91x_platdata xcep_smc91x_info = {
124 .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
125 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 static struct i2c_pxa_platform_data xcep_i2c_platform_data = {
149 .class = I2C_CLASS_HWMON
150 };
151
152
153 static mfp_cfg_t xcep_pin_config[] __initdata = {
154 GPIO79_nCS_3, /* SMC 91C111 chip select. */
155 GPIO80_nCS_4, /* CPLD chip select. */
156 /* SSP communication to MSP430 */
157 GPIO23_SSP1_SCLK,
158 GPIO24_SSP1_SFRM,
159 GPIO25_SSP1_TXD,
160 GPIO26_SSP1_RXD,
161 GPIO27_SSP1_EXTCLK
162 };
163
xcep_init(void)164 static void __init xcep_init(void)
165 {
166 pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
167
168 pxa_set_ffuart_info(NULL);
169 pxa_set_btuart_info(NULL);
170 pxa_set_stuart_info(NULL);
171 pxa_set_hwuart_info(NULL);
172
173 /* See Intel XScale Developer's Guide for details */
174 /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
175 __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
176 /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
177 __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
178
179 platform_add_devices(ARRAY_AND_SIZE(devices));
180 pxa_set_i2c_info(&xcep_i2c_platform_data);
181 }
182
183 MACHINE_START(XCEP, "Iskratel XCEP")
184 .atag_offset = 0x100,
185 .init_machine = xcep_init,
186 .map_io = pxa25x_map_io,
187 .nr_irqs = PXA_NR_IRQS,
188 .init_irq = pxa25x_init_irq,
189 .handle_irq = pxa25x_handle_irq,
190 .init_time = pxa_timer_init,
191 .restart = pxa_restart,
192 MACHINE_END
193
194