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Linux/arch/arm/mach-pxa/xcep.c

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  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 
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 

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