Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 1 | /* |
Uwe Kleine-König | 5886269 | 2007-05-09 07:51:49 +0200 | [diff] [blame] | 2 | * drivers/leds/leds-h1940.c |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 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> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 19 | #include <mach/regs-gpio.h> |
| 20 | #include <mach/hardware.h> |
| 21 | #include <mach/h1940-latch.h> |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 22 | |
| 23 | /* |
| 24 | * Green led. |
| 25 | */ |
Ben Dooks | dd1160d | 2008-06-09 22:00:49 +0100 | [diff] [blame] | 26 | static void h1940_greenled_set(struct led_classdev *led_dev, |
| 27 | enum led_brightness value) |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 28 | { |
| 29 | switch (value) { |
Németh Márton | 4d404fd | 2008-03-09 20:59:57 +0000 | [diff] [blame] | 30 | case LED_HALF: |
| 31 | h1940_latch_control(0, H1940_LATCH_LED_FLASH); |
| 32 | s3c2410_gpio_setpin(S3C2410_GPA7, 1); |
| 33 | break; |
| 34 | case LED_FULL: |
| 35 | h1940_latch_control(0, H1940_LATCH_LED_GREEN); |
| 36 | s3c2410_gpio_setpin(S3C2410_GPA7, 1); |
| 37 | break; |
| 38 | default: |
| 39 | case LED_OFF: |
| 40 | h1940_latch_control(H1940_LATCH_LED_FLASH, 0); |
| 41 | h1940_latch_control(H1940_LATCH_LED_GREEN, 0); |
| 42 | s3c2410_gpio_setpin(S3C2410_GPA7, 0); |
| 43 | break; |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 44 | } |
| 45 | } |
| 46 | |
| 47 | static struct led_classdev h1940_greenled = { |
| 48 | .name = "h1940:green", |
| 49 | .brightness_set = h1940_greenled_set, |
| 50 | .default_trigger = "h1940-charger", |
| 51 | }; |
| 52 | |
| 53 | /* |
| 54 | * Red led. |
| 55 | */ |
Ben Dooks | dd1160d | 2008-06-09 22:00:49 +0100 | [diff] [blame] | 56 | static void h1940_redled_set(struct led_classdev *led_dev, |
| 57 | enum led_brightness value) |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 58 | { |
| 59 | switch (value) { |
Németh Márton | 4d404fd | 2008-03-09 20:59:57 +0000 | [diff] [blame] | 60 | case LED_HALF: |
| 61 | h1940_latch_control(0, H1940_LATCH_LED_FLASH); |
| 62 | s3c2410_gpio_setpin(S3C2410_GPA1, 1); |
| 63 | break; |
| 64 | case LED_FULL: |
| 65 | h1940_latch_control(0, H1940_LATCH_LED_RED); |
| 66 | s3c2410_gpio_setpin(S3C2410_GPA1, 1); |
| 67 | break; |
| 68 | default: |
| 69 | case LED_OFF: |
| 70 | h1940_latch_control(H1940_LATCH_LED_FLASH, 0); |
| 71 | h1940_latch_control(H1940_LATCH_LED_RED, 0); |
| 72 | s3c2410_gpio_setpin(S3C2410_GPA1, 0); |
| 73 | break; |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 74 | } |
| 75 | } |
| 76 | |
| 77 | static struct led_classdev h1940_redled = { |
| 78 | .name = "h1940:red", |
| 79 | .brightness_set = h1940_redled_set, |
| 80 | .default_trigger = "h1940-charger", |
| 81 | }; |
| 82 | |
| 83 | /* |
| 84 | * Blue led. |
| 85 | * (it can only be blue flashing led) |
| 86 | */ |
Ben Dooks | dd1160d | 2008-06-09 22:00:49 +0100 | [diff] [blame] | 87 | static void h1940_blueled_set(struct led_classdev *led_dev, |
| 88 | enum led_brightness value) |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 89 | { |
| 90 | if (value) { |
| 91 | /* flashing Blue */ |
Németh Márton | 4d404fd | 2008-03-09 20:59:57 +0000 | [diff] [blame] | 92 | h1940_latch_control(0, H1940_LATCH_LED_FLASH); |
| 93 | s3c2410_gpio_setpin(S3C2410_GPA3, 1); |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 94 | } else { |
Németh Márton | 4d404fd | 2008-03-09 20:59:57 +0000 | [diff] [blame] | 95 | h1940_latch_control(H1940_LATCH_LED_FLASH, 0); |
| 96 | s3c2410_gpio_setpin(S3C2410_GPA3, 0); |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | } |
| 100 | |
| 101 | static struct led_classdev h1940_blueled = { |
| 102 | .name = "h1940:blue", |
| 103 | .brightness_set = h1940_blueled_set, |
| 104 | .default_trigger = "h1940-bluetooth", |
| 105 | }; |
| 106 | |
Uwe Kleine-König | b0edba7 | 2009-03-28 00:26:38 +0100 | [diff] [blame] | 107 | static int __devinit h1940leds_probe(struct platform_device *pdev) |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 108 | { |
| 109 | int ret; |
| 110 | |
| 111 | ret = led_classdev_register(&pdev->dev, &h1940_greenled); |
| 112 | if (ret) |
| 113 | goto err_green; |
| 114 | |
| 115 | ret = led_classdev_register(&pdev->dev, &h1940_redled); |
| 116 | if (ret) |
| 117 | goto err_red; |
| 118 | |
| 119 | ret = led_classdev_register(&pdev->dev, &h1940_blueled); |
| 120 | if (ret) |
| 121 | goto err_blue; |
| 122 | |
| 123 | return 0; |
| 124 | |
| 125 | err_blue: |
| 126 | led_classdev_unregister(&h1940_redled); |
| 127 | err_red: |
| 128 | led_classdev_unregister(&h1940_greenled); |
| 129 | err_green: |
| 130 | return ret; |
| 131 | } |
| 132 | |
| 133 | static int h1940leds_remove(struct platform_device *pdev) |
| 134 | { |
| 135 | led_classdev_unregister(&h1940_greenled); |
| 136 | led_classdev_unregister(&h1940_redled); |
| 137 | led_classdev_unregister(&h1940_blueled); |
| 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | |
| 142 | static struct platform_driver h1940leds_driver = { |
| 143 | .driver = { |
| 144 | .name = "h1940-leds", |
Kay Sievers | 3c4ded9 | 2008-04-15 14:34:30 -0700 | [diff] [blame] | 145 | .owner = THIS_MODULE, |
Arnaud Patard | bd4009a | 2007-02-12 23:09:32 +0000 | [diff] [blame] | 146 | }, |
| 147 | .probe = h1940leds_probe, |
| 148 | .remove = h1940leds_remove, |
| 149 | }; |
| 150 | |
| 151 | |
| 152 | static int __init h1940leds_init(void) |
| 153 | { |
| 154 | return platform_driver_register(&h1940leds_driver); |
| 155 | } |
| 156 | |
| 157 | static void __exit h1940leds_exit(void) |
| 158 | { |
| 159 | platform_driver_unregister(&h1940leds_driver); |
| 160 | } |
| 161 | |
| 162 | module_init(h1940leds_init); |
| 163 | module_exit(h1940leds_exit); |
| 164 | |
| 165 | MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>"); |
| 166 | MODULE_DESCRIPTION("LED driver for the iPAQ H1940"); |
| 167 | MODULE_LICENSE("GPL"); |
Kay Sievers | 3c4ded9 | 2008-04-15 14:34:30 -0700 | [diff] [blame] | 168 | MODULE_ALIAS("platform:h1940-leds"); |