1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * arch/arm/mach-orion5x/board-d2net.c 4 * 5 * LaCie d2Network and Big Disk Network NAS setup 6 * 7 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/init.h> 12 #include <linux/platform_device.h> 13 #include <linux/pci.h> 14 #include <linux/irq.h> 15 #include <linux/leds.h> 16 #include <linux/gpio.h> 17 #include <asm/mach-types.h> 18 #include <asm/mach/arch.h> 19 #include <asm/mach/pci.h> 20 #include <plat/orion-gpio.h> 21 #include "common.h" 22 #include "orion5x.h" 23 24 /***************************************************************************** 25 * LaCie d2 Network Info 26 ****************************************************************************/ 27 28 /***************************************************************************** 29 * GPIO LED's 30 ****************************************************************************/ 31 32 /* 33 * The blue front LED is wired to the CPLD and can blink in relation with the 34 * SATA activity. 35 * 36 * The following array detail the different LED registers and the combination 37 * of their possible values: 38 * 39 * led_off | blink_ctrl | SATA active | LED state 40 * | | | 41 * 1 | x | x | off 42 * 0 | 0 | 0 | off 43 * 0 | 1 | 0 | blink (rate 300ms) 44 * 0 | x | 1 | on 45 * 46 * Notes: The blue and the red front LED's can't be on at the same time. 47 * Red LED have priority. 48 */ 49 50 #define D2NET_GPIO_RED_LED 6 51 #define D2NET_GPIO_BLUE_LED_BLINK_CTRL 16 52 #define D2NET_GPIO_BLUE_LED_OFF 23 53 54 static struct gpio_led d2net_leds[] = { 55 { 56 .name = "d2net:blue:sata", 57 .default_trigger = "default-on", 58 .gpio = D2NET_GPIO_BLUE_LED_OFF, 59 .active_low = 1, 60 }, 61 { 62 .name = "d2net:red:fail", 63 .gpio = D2NET_GPIO_RED_LED, 64 }, 65 }; 66 67 static struct gpio_led_platform_data d2net_led_data = { 68 .num_leds = ARRAY_SIZE(d2net_leds), 69 .leds = d2net_leds, 70 }; 71 72 static struct platform_device d2net_gpio_leds = { 73 .name = "leds-gpio", 74 .id = -1, 75 .dev = { 76 .platform_data = &d2net_led_data, 77 }, 78 }; 79 80 static void __init d2net_gpio_leds_init(void) 81 { 82 int err; 83 84 /* Configure register blink_ctrl to allow SATA activity LED blinking. */ 85 err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink"); 86 if (err == 0) { 87 err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1); 88 if (err) 89 gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL); 90 } 91 if (err) 92 pr_err("d2net: failed to configure blue LED blink GPIO\n"); 93 94 platform_device_register(&d2net_gpio_leds); 95 } 96 97 /***************************************************************************** 98 * General Setup 99 ****************************************************************************/ 100 101 void __init d2net_init(void) 102 { 103 d2net_gpio_leds_init(); 104 105 pr_notice("d2net: Flash write are not yet supported.\n"); 106 } 107