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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-orion5x/edmini_v2-setup.c

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  1 /*
  2  * arch/arm/mach-orion5x/edmini_v2-setup.c
  3  *
  4  * LaCie Ethernet Disk mini V2 Setup
  5  *
  6  * Copyright (C) 2008 Christopher Moore <moore@free.fr>
  7  * Copyright (C) 2008 Albert Aribaud <albert.aribaud@free.fr>
  8  *
  9  * This file is licensed under the terms of the GNU General Public
 10  * License version 2. This program is licensed "as is" without any
 11  * warranty of any kind, whether express or implied.
 12  */
 13 
 14 /*
 15  * TODO: add Orion USB device port init when kernel.org support is added.
 16  * TODO: add flash write support: see below.
 17  * TODO: add power-off support.
 18  * TODO: add I2C EEPROM support.
 19  */
 20 
 21 #include <linux/kernel.h>
 22 #include <linux/init.h>
 23 #include <linux/platform_device.h>
 24 #include <linux/pci.h>
 25 #include <linux/irq.h>
 26 #include <linux/mbus.h>
 27 #include <linux/mtd/physmap.h>
 28 #include <linux/leds.h>
 29 #include <linux/gpio_keys.h>
 30 #include <linux/input.h>
 31 #include <linux/i2c.h>
 32 #include <linux/ata_platform.h>
 33 #include <linux/gpio.h>
 34 #include <asm/mach-types.h>
 35 #include <asm/mach/arch.h>
 36 #include <asm/mach/pci.h>
 37 #include <mach/orion5x.h>
 38 #include "common.h"
 39 #include "mpp.h"
 40 
 41 /*****************************************************************************
 42  * EDMINI_V2 Info
 43  ****************************************************************************/
 44 
 45 /*
 46  * 512KB NOR flash Device bus boot chip select
 47  */
 48 
 49 #define EDMINI_V2_NOR_BOOT_BASE         0xfff80000
 50 #define EDMINI_V2_NOR_BOOT_SIZE         SZ_512K
 51 
 52 /*****************************************************************************
 53  * 512KB NOR Flash on BOOT Device
 54  ****************************************************************************/
 55 
 56 /*
 57  * Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
 58  * -type device. This could cause risks of accidentally erasing critical
 59  * flash sectors. We thus define a single, write-protected partition covering
 60  * the whole flash.
 61  * TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
 62  * code, break this into at least three partitions: 'u-boot code', 'u-boot
 63  * environment' and 'whatever is left'.
 64  */
 65 
 66 static struct mtd_partition edmini_v2_partitions[] = {
 67         {
 68                 .name           = "Full512kb",
 69                 .size           = 0x00080000,
 70                 .offset         = 0x00000000,
 71                 .mask_flags     = MTD_WRITEABLE,
 72         },
 73 };
 74 
 75 static struct physmap_flash_data edmini_v2_nor_flash_data = {
 76         .width          = 1,
 77         .parts          = edmini_v2_partitions,
 78         .nr_parts       = ARRAY_SIZE(edmini_v2_partitions),
 79 };
 80 
 81 static struct resource edmini_v2_nor_flash_resource = {
 82         .flags                  = IORESOURCE_MEM,
 83         .start                  = EDMINI_V2_NOR_BOOT_BASE,
 84         .end                    = EDMINI_V2_NOR_BOOT_BASE
 85                 + EDMINI_V2_NOR_BOOT_SIZE - 1,
 86 };
 87 
 88 static struct platform_device edmini_v2_nor_flash = {
 89         .name                   = "physmap-flash",
 90         .id                     = 0,
 91         .dev            = {
 92                 .platform_data  = &edmini_v2_nor_flash_data,
 93         },
 94         .num_resources          = 1,
 95         .resource               = &edmini_v2_nor_flash_resource,
 96 };
 97 
 98 /*****************************************************************************
 99  * RTC 5C372a on I2C bus
100  ****************************************************************************/
101 
102 #define EDMINIV2_RTC_GPIO       3
103 
104 static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
105         I2C_BOARD_INFO("rs5c372a", 0x32),
106         .irq = 0,
107 };
108 
109 /*****************************************************************************
110  * General Setup
111  ****************************************************************************/
112 static unsigned int edminiv2_mpp_modes[] __initdata = {
113         MPP0_UNUSED,
114         MPP1_UNUSED,
115         MPP2_UNUSED,
116         MPP3_GPIO,      /* RTC interrupt */
117         MPP4_UNUSED,
118         MPP5_UNUSED,
119         MPP6_UNUSED,
120         MPP7_UNUSED,
121         MPP8_UNUSED,
122         MPP9_UNUSED,
123         MPP10_UNUSED,
124         MPP11_UNUSED,
125         MPP12_SATA_LED, /* SATA 0 presence */
126         MPP13_SATA_LED, /* SATA 1 presence */
127         MPP14_SATA_LED, /* SATA 0 active */
128         MPP15_SATA_LED, /* SATA 1 active */
129         /* 16: Power LED control (0 = On, 1 = Off) */
130         MPP16_GPIO,
131         /* 17: Power LED control select (0 = CPLD, 1 = GPIO16) */
132         MPP17_GPIO,
133         /* 18: Power button status (0 = Released, 1 = Pressed) */
134         MPP18_GPIO,
135         MPP19_UNUSED,
136         0,
137 };
138 
139 void __init edmini_v2_init(void)
140 {
141         orion5x_mpp_conf(edminiv2_mpp_modes);
142 
143         /*
144          * Configure peripherals.
145          */
146         orion5x_ehci0_init();
147 
148         mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
149                                     ORION_MBUS_DEVBUS_BOOT_ATTR,
150                                     EDMINI_V2_NOR_BOOT_BASE,
151                                     EDMINI_V2_NOR_BOOT_SIZE);
152         platform_device_register(&edmini_v2_nor_flash);
153 
154         pr_notice("edmini_v2: USB device port, flash write and power-off "
155                   "are not yet supported.\n");
156 
157         /* Get RTC IRQ and register the chip */
158         if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
159                 if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
160                         edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
161                 else
162                         gpio_free(EDMINIV2_RTC_GPIO);
163         }
164 
165         if (edmini_v2_i2c_rtc.irq == 0)
166                 pr_warning("edmini_v2: failed to get RTC IRQ\n");
167 
168         i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
169 }
170 

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