| Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 1 | /* |
| 2 | * drivers/leds/h1940-leds.c |
| 3 | * Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org> |
| 4 | * |
| 5 | * This file is subject to the terms and conditions of the GNU General Public |
| 6 | * License. See the file COPYING in the main directory of this archive for |
| 7 | * more details. |
| 8 | * |
| 9 | * H1940 leds driver |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/string.h> |
| 17 | #include <linux/ctype.h> |
| 18 | #include <linux/leds.h> |
| 19 | #include <asm/arch/regs-gpio.h> |
| 20 | #include <asm/hardware.h> |
| 21 | #include <asm/arch/h1940-latch.h> |
| 22 | |
| 23 | /* |
| 24 | * Green led. |
| 25 | */ |
| 26 | void h1940_greenled_set(struct led_classdev *led_dev, enum led_brightness value) |
| 27 | { |
| 28 | switch (value) { |
| 29 | case LED_HALF: |
| 30 | h1940_latch_control(0,H1940_LATCH_LED_FLASH); |
| 31 | s3c2410_gpio_setpin(S3C2410_GPA7,1); |
| 32 | break; |
| 33 | case LED_FULL: |
| 34 | h1940_latch_control(0,H1940_LATCH_LED_GREEN); |
| 35 | s3c2410_gpio_setpin(S3C2410_GPA7,1); |
| 36 | break; |
| 37 | default: |
| 38 | case LED_OFF: |
| 39 | h1940_latch_control(H1940_LATCH_LED_FLASH,0); |
| 40 | h1940_latch_control(H1940_LATCH_LED_GREEN,0); |
| 41 | s3c2410_gpio_setpin(S3C2410_GPA7,0); |
| 42 | break; |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | static struct led_classdev h1940_greenled = { |
| 47 | .name = "h1940:green", |
| 48 | .brightness_set = h1940_greenled_set, |
| 49 | .default_trigger = "h1940-charger", |
| 50 | }; |
| 51 | |
| 52 | /* |
| 53 | * Red led. |
| 54 | */ |
| 55 | void h1940_redled_set(struct led_classdev *led_dev, enum led_brightness value) |
| 56 | { |
| 57 | switch (value) { |
| 58 | case LED_HALF: |
| 59 | h1940_latch_control(0,H1940_LATCH_LED_FLASH); |
| 60 | s3c2410_gpio_setpin(S3C2410_GPA1,1); |
| 61 | break; |
| 62 | case LED_FULL: |
| 63 | h1940_latch_control(0,H1940_LATCH_LED_RED); |
| 64 | s3c2410_gpio_setpin(S3C2410_GPA1,1); |
| 65 | break; |
| 66 | default: |
| 67 | case LED_OFF: |
| 68 | h1940_latch_control(H1940_LATCH_LED_FLASH,0); |
| 69 | h1940_latch_control(H1940_LATCH_LED_RED,0); |
| 70 | s3c2410_gpio_setpin(S3C2410_GPA1,0); |
| 71 | break; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | static struct led_classdev h1940_redled = { |
| 76 | .name = "h1940:red", |
| 77 | .brightness_set = h1940_redled_set, |
| 78 | .default_trigger = "h1940-charger", |
| 79 | }; |
| 80 | |
| 81 | /* |
| 82 | * Blue led. |
| 83 | * (it can only be blue flashing led) |
| 84 | */ |
| 85 | void h1940_blueled_set(struct led_classdev *led_dev, enum led_brightness value) |
| 86 | { |
| 87 | if (value) { |
| 88 | /* flashing Blue */ |
| 89 | h1940_latch_control(0,H1940_LATCH_LED_FLASH); |
| 90 | s3c2410_gpio_setpin(S3C2410_GPA3,1); |
| 91 | } else { |
| 92 | h1940_latch_control(H1940_LATCH_LED_FLASH,0); |
| 93 | s3c2410_gpio_setpin(S3C2410_GPA3,0); |
| 94 | } |
| 95 | |
| 96 | } |
| 97 | |
| 98 | static struct led_classdev h1940_blueled = { |
| 99 | .name = "h1940:blue", |
| 100 | .brightness_set = h1940_blueled_set, |
| 101 | .default_trigger = "h1940-bluetooth", |
| 102 | }; |
| 103 | |
| 104 | static int __init h1940leds_probe(struct platform_device *pdev) |
| 105 | { |
| 106 | int ret; |
| 107 | |
| 108 | ret = led_classdev_register(&pdev->dev, &h1940_greenled); |
| 109 | if (ret) |
| 110 | goto err_green; |
| 111 | |
| 112 | ret = led_classdev_register(&pdev->dev, &h1940_redled); |
| 113 | if (ret) |
| 114 | goto err_red; |
| 115 | |
| 116 | ret = led_classdev_register(&pdev->dev, &h1940_blueled); |
| 117 | if (ret) |
| 118 | goto err_blue; |
| 119 | |
| 120 | return 0; |
| 121 | |
| 122 | err_blue: |
| 123 | led_classdev_unregister(&h1940_redled); |
| 124 | err_red: |
| 125 | led_classdev_unregister(&h1940_greenled); |
| 126 | err_green: |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | static int h1940leds_remove(struct platform_device *pdev) |
| 131 | { |
| 132 | led_classdev_unregister(&h1940_greenled); |
| 133 | led_classdev_unregister(&h1940_redled); |
| 134 | led_classdev_unregister(&h1940_blueled); |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | static struct platform_driver h1940leds_driver = { |
| 140 | .driver = { |
| 141 | .name = "h1940-leds", |
| 142 | }, |
| 143 | .probe = h1940leds_probe, |
| 144 | .remove = h1940leds_remove, |
| 145 | }; |
| 146 | |
| 147 | |
| 148 | static int __init h1940leds_init(void) |
| 149 | { |
| 150 | return platform_driver_register(&h1940leds_driver); |
| 151 | } |
| 152 | |
| 153 | static void __exit h1940leds_exit(void) |
| 154 | { |
| 155 | platform_driver_unregister(&h1940leds_driver); |
| 156 | } |
| 157 | |
| 158 | module_init(h1940leds_init); |
| 159 | module_exit(h1940leds_exit); |
| 160 | |
| 161 | MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>"); |
| 162 | MODULE_DESCRIPTION("LED driver for the iPAQ H1940"); |
| 163 | MODULE_LICENSE("GPL"); |