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 <linux/gpio/machine.h> 18 #include <asm/mach-types.h> 19 #include <asm/mach/arch.h> 20 #include <asm/mach/pci.h> 21 #include <plat/orion-gpio.h> 22 #include "common.h" 23 #include "orion5x.h" 24 25 /***************************************************************************** 26 * LaCie d2 Network Info 27 ****************************************************************************/ 28 29 /***************************************************************************** 30 * GPIO LED's 31 ****************************************************************************/ 32 33 /* 34 * The blue front LED is wired to the CPLD and can blink in relation with the 35 * SATA activity. 36 * 37 * The following array detail the different LED registers and the combination 38 * of their possible values: 39 * 40 * led_off | blink_ctrl | SATA active | LED state 41 * | | | 42 * 1 | x | x | off 43 * 0 | 0 | 0 | off 44 * 0 | 1 | 0 | blink (rate 300ms) 45 * 0 | x | 1 | on 46 * 47 * Notes: The blue and the red front LED's can't be on at the same time. 48 * Red LED have priority. 49 */ 50 51 #define D2NET_GPIO_RED_LED 6 52 #define D2NET_GPIO_BLUE_LED_BLINK_CTRL 16 53 #define D2NET_GPIO_BLUE_LED_OFF 23 54 55 static struct gpio_led d2net_leds[] = { 56 { 57 .name = "d2net:blue:sata", 58 .default_trigger = "default-on", 59 }, 60 { 61 .name = "d2net:red:fail", 62 }, 63 }; 64 65 static struct gpio_led_platform_data d2net_led_data = { 66 .num_leds = ARRAY_SIZE(d2net_leds), 67 .leds = d2net_leds, 68 }; 69 70 static struct platform_device d2net_gpio_leds = { 71 .name = "leds-gpio", 72 .id = -1, 73 .dev = { 74 .platform_data = &d2net_led_data, 75 }, 76 }; 77 78 static struct gpiod_lookup_table d2net_leds_gpio_table = { 79 .dev_id = "leds-gpio", 80 .table = { 81 GPIO_LOOKUP_IDX("orion_gpio0", D2NET_GPIO_BLUE_LED_OFF, NULL, 82 0, GPIO_ACTIVE_LOW), 83 GPIO_LOOKUP_IDX("orion_gpio0", D2NET_GPIO_RED_LED, NULL, 84 1, GPIO_ACTIVE_HIGH), 85 { }, 86 }, 87 }; 88 89 static void __init d2net_gpio_leds_init(void) 90 { 91 int err; 92 93 /* Configure register blink_ctrl to allow SATA activity LED blinking. */ 94 err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink"); 95 if (err == 0) { 96 err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1); 97 if (err) 98 gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL); 99 } 100 if (err) 101 pr_err("d2net: failed to configure blue LED blink GPIO\n"); 102 103 gpiod_add_lookup_table(&d2net_leds_gpio_table); 104 platform_device_register(&d2net_gpio_leds); 105 } 106 107 /***************************************************************************** 108 * General Setup 109 ****************************************************************************/ 110 111 void __init d2net_init(void) 112 { 113 d2net_gpio_leds_init(); 114 115 pr_notice("d2net: Flash write are not yet supported.\n"); 116 } 117