| 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify it |
| 3 | * under the terms of the GNU General Public License version 2 as published |
| 4 | * by the Free Software Foundation. |
| 5 | * |
| 6 | * Copyright (C) 2011 Thomas Langer <thomas.langer@lantiq.com> |
| 7 | * Copyright (C) 2011 John Crispin <blogic@openwrt.org> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/platform_device.h> |
| 11 | #include <linux/mtd/partitions.h> |
| 12 | #include <linux/spi/spi.h> |
| 13 | #include <linux/spi/spi_gpio.h> |
| 14 | #include <linux/spi/eeprom.h> |
| 15 | |
| 16 | #include "../machtypes.h" |
| 17 | |
| 18 | #include "devices.h" |
| 19 | |
| 20 | static struct mtd_partition easy98000_nor_partitions[] = { |
| 21 | { |
| 22 | .name = "uboot", |
| 23 | .offset = 0x0, |
| 24 | .size = 0x40000, |
| 25 | }, |
| 26 | { |
| 27 | .name = "uboot_env", |
| 28 | .offset = 0x40000, |
| 29 | .size = 0x40000, /* 2 sectors for redundant env. */ |
| 30 | }, |
| 31 | { |
| 32 | .name = "linux", |
| 33 | .offset = 0x80000, |
| 34 | .size = 0xF80000, /* map only 16 MiB */ |
| 35 | }, |
| 36 | }; |
| 37 | |
| 38 | struct physmap_flash_data easy98000_nor_flash_data = { |
| 39 | .nr_parts = ARRAY_SIZE(easy98000_nor_partitions), |
| 40 | .parts = easy98000_nor_partitions, |
| 41 | }; |
| 42 | |
| 43 | static struct flash_platform_data easy98000_spi_flash_platform_data = { |
| 44 | .name = "sflash", |
| 45 | .parts = easy98000_nor_partitions, |
| 46 | .nr_parts = ARRAY_SIZE(easy98000_nor_partitions) |
| 47 | }; |
| 48 | |
| 49 | static struct spi_board_info easy98000_spi_flash_data __initdata = { |
| 50 | .modalias = "m25p80", |
| 51 | .bus_num = 0, |
| 52 | .chip_select = 0, |
| 53 | .max_speed_hz = 10 * 1000 * 1000, |
| 54 | .mode = SPI_MODE_3, |
| 55 | .platform_data = &easy98000_spi_flash_platform_data |
| 56 | }; |
| 57 | |
| 58 | /* setup gpio based spi bus/device for access to the eeprom on the board */ |
| 59 | #define SPI_GPIO_MRST 102 |
| 60 | #define SPI_GPIO_MTSR 103 |
| 61 | #define SPI_GPIO_CLK 104 |
| 62 | #define SPI_GPIO_CS0 105 |
| 63 | #define SPI_GPIO_CS1 106 |
| 64 | #define SPI_GPIO_BUS_NUM 1 |
| 65 | |
| 66 | static struct spi_gpio_platform_data easy98000_spi_gpio_data = { |
| 67 | .sck = SPI_GPIO_CLK, |
| 68 | .mosi = SPI_GPIO_MTSR, |
| 69 | .miso = SPI_GPIO_MRST, |
| 70 | .num_chipselect = 2, |
| 71 | }; |
| 72 | |
| 73 | static struct platform_device easy98000_spi_gpio_device = { |
| 74 | .name = "spi_gpio", |
| 75 | .id = SPI_GPIO_BUS_NUM, |
| 76 | .dev.platform_data = &easy98000_spi_gpio_data, |
| 77 | }; |
| 78 | |
| 79 | static struct spi_eeprom at25160n = { |
| 80 | .byte_len = 16 * 1024 / 8, |
| 81 | .name = "at25160n", |
| 82 | .page_size = 32, |
| 83 | .flags = EE_ADDR2, |
| 84 | }; |
| 85 | |
| 86 | static struct spi_board_info easy98000_spi_gpio_devices __initdata = { |
| 87 | .modalias = "at25", |
| 88 | .bus_num = SPI_GPIO_BUS_NUM, |
| 89 | .max_speed_hz = 1000 * 1000, |
| 90 | .mode = SPI_MODE_3, |
| 91 | .chip_select = 1, |
| 92 | .controller_data = (void *) SPI_GPIO_CS1, |
| 93 | .platform_data = &at25160n, |
| 94 | }; |
| 95 | |
| 96 | static void __init |
| 97 | easy98000_init_common(void) |
| 98 | { |
| 99 | spi_register_board_info(&easy98000_spi_gpio_devices, 1); |
| 100 | platform_device_register(&easy98000_spi_gpio_device); |
| 101 | falcon_register_i2c(); |
| 102 | } |
| 103 | |
| 104 | static void __init |
| 105 | easy98000_init(void) |
| 106 | { |
| 107 | easy98000_init_common(); |
| 108 | ltq_register_nor(&easy98000_nor_flash_data); |
| 109 | } |
| 110 | |
| 111 | static void __init |
| 112 | easy98000sf_init(void) |
| 113 | { |
| 114 | easy98000_init_common(); |
| 115 | falcon_register_spi_flash(&easy98000_spi_flash_data); |
| 116 | } |
| 117 | |
| 118 | static void __init |
| 119 | easy98000nand_init(void) |
| 120 | { |
| 121 | easy98000_init_common(); |
| 122 | falcon_register_nand(); |
| 123 | } |
| 124 | |
| 125 | MIPS_MACHINE(LANTIQ_MACH_EASY98000, |
| 126 | "EASY98000", |
| 127 | "EASY98000 Eval Board", |
| 128 | easy98000_init); |
| 129 | |
| 130 | MIPS_MACHINE(LANTIQ_MACH_EASY98000SF, |
| 131 | "EASY98000SF", |
| 132 | "EASY98000 Eval Board (Serial Flash)", |
| 133 | easy98000sf_init); |
| 134 | |
| 135 | MIPS_MACHINE(LANTIQ_MACH_EASY98000NAND, |
| 136 | "EASY98000NAND", |
| 137 | "EASY98000 Eval Board (NAND Flash)", |
| 138 | easy98000nand_init); |
| 139 | |
