projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| bd4009af | 1 | /* |
| 58862699 | 2 | * drivers/leds/leds-h1940.c |
| bd4009af AP |
3 | * Copyright (c) Arnaud Patard <[email protected]> |
| 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> | |
| ec976d6e BD |
19 | #include <linux/gpio.h> |
| 20 | ||
| a09e64fb RK |
21 | #include <mach/regs-gpio.h> |
| 22 | #include <mach/hardware.h> | |
| 23 | #include <mach/h1940-latch.h> | |
| bd4009af AP |
24 | |
| 25 | /* | |
| 26 | * Green led. | |
| 27 | */ | |
| dd1160dc BD |
28 | static void h1940_greenled_set(struct led_classdev *led_dev, |
| 29 | enum led_brightness value) | |
| bd4009af AP |
30 | { |
| 31 | switch (value) { | |
| 4d404fd5 NM |
32 | case LED_HALF: |
| 33 | h1940_latch_control(0, H1940_LATCH_LED_FLASH); | |
| 34 | s3c2410_gpio_setpin(S3C2410_GPA7, 1); | |
| 35 | break; | |
| 36 | case LED_FULL: | |
| 37 | h1940_latch_control(0, H1940_LATCH_LED_GREEN); | |
| 38 | s3c2410_gpio_setpin(S3C2410_GPA7, 1); | |
| 39 | break; | |
| 40 | default: | |
| 41 | case LED_OFF: | |
| 42 | h1940_latch_control(H1940_LATCH_LED_FLASH, 0); | |
| 43 | h1940_latch_control(H1940_LATCH_LED_GREEN, 0); | |
| 44 | s3c2410_gpio_setpin(S3C2410_GPA7, 0); | |
| 45 | break; | |
| bd4009af AP |
46 | } |
| 47 | } | |
| 48 | ||
| 49 | static struct led_classdev h1940_greenled = { | |
| 50 | .name = "h1940:green", | |
| 51 | .brightness_set = h1940_greenled_set, | |
| 52 | .default_trigger = "h1940-charger", | |
| 53 | }; | |
| 54 | ||
| 55 | /* | |
| 56 | * Red led. | |
| 57 | */ | |
| dd1160dc BD |
58 | static void h1940_redled_set(struct led_classdev *led_dev, |
| 59 | enum led_brightness value) | |
| bd4009af AP |
60 | { |
| 61 | switch (value) { | |
| 4d404fd5 NM |
62 | case LED_HALF: |
| 63 | h1940_latch_control(0, H1940_LATCH_LED_FLASH); | |
| 64 | s3c2410_gpio_setpin(S3C2410_GPA1, 1); | |
| 65 | break; | |
| 66 | case LED_FULL: | |
| 67 | h1940_latch_control(0, H1940_LATCH_LED_RED); | |
| 68 | s3c2410_gpio_setpin(S3C2410_GPA1, 1); | |
| 69 | break; | |
| 70 | default: | |
| 71 | case LED_OFF: | |
| 72 | h1940_latch_control(H1940_LATCH_LED_FLASH, 0); | |
| 73 | h1940_latch_control(H1940_LATCH_LED_RED, 0); | |
| 74 | s3c2410_gpio_setpin(S3C2410_GPA1, 0); | |
| 75 | break; | |
| bd4009af AP |
76 | } |
| 77 | } | |
| 78 | ||
| 79 | static struct led_classdev h1940_redled = { | |
| 80 | .name = "h1940:red", | |
| 81 | .brightness_set = h1940_redled_set, | |
| 82 | .default_trigger = "h1940-charger", | |
| 83 | }; | |
| 84 | ||
| 85 | /* | |
| 86 | * Blue led. | |
| 87 | * (it can only be blue flashing led) | |
| 88 | */ | |
| dd1160dc BD |
89 | static void h1940_blueled_set(struct led_classdev *led_dev, |
| 90 | enum led_brightness value) | |
| bd4009af AP |
91 | { |
| 92 | if (value) { | |
| 93 | /* flashing Blue */ | |
| 4d404fd5 NM |
94 | h1940_latch_control(0, H1940_LATCH_LED_FLASH); |
| 95 | s3c2410_gpio_setpin(S3C2410_GPA3, 1); | |
| bd4009af | 96 | } else { |
| 4d404fd5 NM |
97 | h1940_latch_control(H1940_LATCH_LED_FLASH, 0); |
| 98 | s3c2410_gpio_setpin(S3C2410_GPA3, 0); | |
| bd4009af AP |
99 | } |
| 100 | ||
| 101 | } | |
| 102 | ||
| 103 | static struct led_classdev h1940_blueled = { | |
| 104 | .name = "h1940:blue", | |
| 105 | .brightness_set = h1940_blueled_set, | |
| 106 | .default_trigger = "h1940-bluetooth", | |
| 107 | }; | |
| 108 | ||
| b0edba7e | 109 | static int __devinit h1940leds_probe(struct platform_device *pdev) |
| bd4009af AP |
110 | { |
| 111 | int ret; | |
| 112 | ||
| 113 | ret = led_classdev_register(&pdev->dev, &h1940_greenled); | |
| 114 | if (ret) | |
| 115 | goto err_green; | |
| 116 | ||
| 117 | ret = led_classdev_register(&pdev->dev, &h1940_redled); | |
| 118 | if (ret) | |
| 119 | goto err_red; | |
| 120 | ||
| 121 | ret = led_classdev_register(&pdev->dev, &h1940_blueled); | |
| 122 | if (ret) | |
| 123 | goto err_blue; | |
| 124 | ||
| 125 | return 0; | |
| 126 | ||
| 127 | err_blue: | |
| 128 | led_classdev_unregister(&h1940_redled); | |
| 129 | err_red: | |
| 130 | led_classdev_unregister(&h1940_greenled); | |
| 131 | err_green: | |
| 132 | return ret; | |
| 133 | } | |
| 134 | ||
| 135 | static int h1940leds_remove(struct platform_device *pdev) | |
| 136 | { | |
| 137 | led_classdev_unregister(&h1940_greenled); | |
| 138 | led_classdev_unregister(&h1940_redled); | |
| 139 | led_classdev_unregister(&h1940_blueled); | |
| 140 | return 0; | |
| 141 | } | |
| 142 | ||
| 143 | ||
| 144 | static struct platform_driver h1940leds_driver = { | |
| 145 | .driver = { | |
| 146 | .name = "h1940-leds", | |
| 3c4ded97 | 147 | .owner = THIS_MODULE, |
| bd4009af AP |
148 | }, |
| 149 | .probe = h1940leds_probe, | |
| 150 | .remove = h1940leds_remove, | |
| 151 | }; | |
| 152 | ||
| 153 | ||
| 154 | static int __init h1940leds_init(void) | |
| 155 | { | |
| 156 | return platform_driver_register(&h1940leds_driver); | |
| 157 | } | |
| 158 | ||
| 159 | static void __exit h1940leds_exit(void) | |
| 160 | { | |
| 161 | platform_driver_unregister(&h1940leds_driver); | |
| 162 | } | |
| 163 | ||
| 164 | module_init(h1940leds_init); | |
| 165 | module_exit(h1940leds_exit); | |
| 166 | ||
| 167 | MODULE_AUTHOR("Arnaud Patard <[email protected]>"); | |
| 168 | MODULE_DESCRIPTION("LED driver for the iPAQ H1940"); | |
| 169 | MODULE_LICENSE("GPL"); | |
| 3c4ded97 | 170 | MODULE_ALIAS("platform:h1940-leds"); |