1 /* 2 * arch/arm/mach-orion5x/board-d2net.c 3 * 4 * LaCie d2Network and Big Disk Network NAS setup 5 * 6 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com> 7 * 8 * This file is licensed under the terms of the GNU General Public 9 * License version 2. This program is licensed "as is" without any 10 * warranty of any kind, whether express or implied. 11 */ 12 13 #include <linux/kernel.h> 14 #include <linux/init.h> 15 #include <linux/platform_device.h> 16 #include <linux/pci.h> 17 #include <linux/irq.h> 18 #include <linux/leds.h> 19 #include <linux/gpio.h> 20 #include <asm/mach-types.h> 21 #include <asm/mach/arch.h> 22 #include <asm/mach/pci.h> 23 #include <plat/orion-gpio.h> 24 #include "common.h" 25 #include "orion5x.h" 26 27 /***************************************************************************** 28 * LaCie d2 Network Info 29 ****************************************************************************/ 30 31 /***************************************************************************** 32 * GPIO LED's 33 ****************************************************************************/ 34 35 /* 36 * The blue front LED is wired to the CPLD and can blink in relation with the 37 * SATA activity. 38 * 39 * The following array detail the different LED registers and the combination 40 * of their possible values: 41 * 42 * led_off | blink_ctrl | SATA active | LED state 43 * | | | 44 * 1 | x | x | off 45 * 0 | 0 | 0 | off 46 * 0 | 1 | 0 | blink (rate 300ms) 47 * 0 | x | 1 | on 48 * 49 * Notes: The blue and the red front LED's can't be on at the same time. 50 * Red LED have priority. 51 */ 52 53 #define D2NET_GPIO_RED_LED 6 54 #define D2NET_GPIO_BLUE_LED_BLINK_CTRL 16 55 #define D2NET_GPIO_BLUE_LED_OFF 23 56 57 static struct gpio_led d2net_leds[] = { 58 { 59 .name = "d2net:blue:sata", 60 .default_trigger = "default-on", 61 .gpio = D2NET_GPIO_BLUE_LED_OFF, 62 .active_low = 1, 63 }, 64 { 65 .name = "d2net:red:fail", 66 .gpio = D2NET_GPIO_RED_LED, 67 }, 68 }; 69 70 static struct gpio_led_platform_data d2net_led_data = { 71 .num_leds = ARRAY_SIZE(d2net_leds), 72 .leds = d2net_leds, 73 }; 74 75 static struct platform_device d2net_gpio_leds = { 76 .name = "leds-gpio", 77 .id = -1, 78 .dev = { 79 .platform_data = &d2net_led_data, 80 }, 81 }; 82 83 static void __init d2net_gpio_leds_init(void) 84 { 85 int err; 86 87 /* Configure register blink_ctrl to allow SATA activity LED blinking. */ 88 err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink"); 89 if (err == 0) { 90 err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1); 91 if (err) 92 gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL); 93 } 94 if (err) 95 pr_err("d2net: failed to configure blue LED blink GPIO\n"); 96 97 platform_device_register(&d2net_gpio_leds); 98 } 99 100 /***************************************************************************** 101 * General Setup 102 ****************************************************************************/ 103 104 void __init d2net_init(void) 105 { 106 d2net_gpio_leds_init(); 107 108 pr_notice("d2net: Flash write are not yet supported.\n"); 109 } 110