| Simon Guinot | b51d92d | 2010-09-19 15:33:59 +0200 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-kirkwood/lacie_v2-common.c |
| 3 | * |
| 4 | * This file is licensed under the terms of the GNU General Public |
| 5 | * License version 2. This program is licensed "as is" without any |
| 6 | * warranty of any kind, whether express or implied. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/mtd/physmap.h> |
| 12 | #include <linux/spi/flash.h> |
| 13 | #include <linux/spi/spi.h> |
| 14 | #include <linux/i2c.h> |
| 15 | #include <linux/i2c/at24.h> |
| 16 | #include <linux/gpio.h> |
| 17 | #include <asm/mach/time.h> |
| 18 | #include <mach/kirkwood.h> |
| 19 | #include <mach/irqs.h> |
| 20 | #include <plat/time.h> |
| 21 | #include "common.h" |
| 22 | |
| 23 | /***************************************************************************** |
| 24 | * 512KB SPI Flash on Boot Device (MACRONIX MX25L4005) |
| 25 | ****************************************************************************/ |
| 26 | |
| 27 | static struct mtd_partition lacie_v2_flash_parts[] = { |
| 28 | { |
| 29 | .name = "u-boot", |
| 30 | .size = MTDPART_SIZ_FULL, |
| 31 | .offset = 0, |
| 32 | .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| 33 | }, |
| 34 | }; |
| 35 | |
| 36 | static const struct flash_platform_data lacie_v2_flash = { |
| 37 | .type = "mx25l4005a", |
| 38 | .name = "spi_flash", |
| 39 | .parts = lacie_v2_flash_parts, |
| 40 | .nr_parts = ARRAY_SIZE(lacie_v2_flash_parts), |
| 41 | }; |
| 42 | |
| 43 | static struct spi_board_info __initdata lacie_v2_spi_slave_info[] = { |
| 44 | { |
| 45 | .modalias = "m25p80", |
| 46 | .platform_data = &lacie_v2_flash, |
| 47 | .irq = -1, |
| 48 | .max_speed_hz = 20000000, |
| 49 | .bus_num = 0, |
| 50 | .chip_select = 0, |
| 51 | }, |
| 52 | }; |
| 53 | |
| 54 | void __init lacie_v2_register_flash(void) |
| 55 | { |
| 56 | spi_register_board_info(lacie_v2_spi_slave_info, |
| 57 | ARRAY_SIZE(lacie_v2_spi_slave_info)); |
| 58 | kirkwood_spi_init(); |
| 59 | } |
| 60 | |
| 61 | /***************************************************************************** |
| 62 | * I2C devices |
| 63 | ****************************************************************************/ |
| 64 | |
| 65 | static struct at24_platform_data at24c04 = { |
| 66 | .byte_len = SZ_4K / 8, |
| 67 | .page_size = 16, |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * i2c addr | chip | description |
| 72 | * 0x50 | HT24LC04 | eeprom (512B) |
| 73 | */ |
| 74 | |
| 75 | static struct i2c_board_info __initdata lacie_v2_i2c_info[] = { |
| 76 | { |
| 77 | I2C_BOARD_INFO("24c04", 0x50), |
| 78 | .platform_data = &at24c04, |
| 79 | } |
| 80 | }; |
| 81 | |
| 82 | void __init lacie_v2_register_i2c_devices(void) |
| 83 | { |
| 84 | kirkwood_i2c_init(); |
| 85 | i2c_register_board_info(0, lacie_v2_i2c_info, |
| 86 | ARRAY_SIZE(lacie_v2_i2c_info)); |
| 87 | } |
| 88 | |
| 89 | /***************************************************************************** |
| 90 | * Hard Disk power |
| 91 | ****************************************************************************/ |
| 92 | |
| 93 | static int __initdata lacie_v2_gpio_hdd_power[] = { 16, 17, 41, 42, 43 }; |
| 94 | |
| 95 | void __init lacie_v2_hdd_power_init(int hdd_num) |
| 96 | { |
| 97 | int i; |
| 98 | int err; |
| 99 | |
| 100 | /* Power up all hard disks. */ |
| 101 | for (i = 0; i < hdd_num; i++) { |
| 102 | err = gpio_request(lacie_v2_gpio_hdd_power[i], NULL); |
| 103 | if (err == 0) { |
| 104 | err = gpio_direction_output( |
| 105 | lacie_v2_gpio_hdd_power[i], 1); |
| 106 | /* Free the HDD power GPIOs. This allow user-space to |
| 107 | * configure them via the gpiolib sysfs interface. */ |
| 108 | gpio_free(lacie_v2_gpio_hdd_power[i]); |
| 109 | } |
| 110 | if (err) |
| 111 | pr_err("Failed to power up HDD%d\n", i + 1); |
| 112 | } |
| 113 | } |