target/linux/s3c24xx/patches-2.6.26/1032-gta02-leds.patch.patch

   1 From fc22d87d11df9053f1a1b41b7b450c3af07b5059 Mon Sep 17 00:00:00 2001
   2 From: mokopatches <mokopatches@openmoko.org>
   3 Date: Wed, 16 Jul 2008 14:46:56 +0100
   4 Subject: [PATCH] gta02-leds.patch
   5
   6 ---
   7  drivers/leds/Kconfig              |    6 +
   8  drivers/leds/Makefile             |    1 +
   9  drivers/leds/leds-neo1973-gta02.c |  226 +++++++++++++++++++++++++++++++++++++
  10  3 files changed, 233 insertions(+), 0 deletions(-)
  11  create mode 100644 drivers/leds/leds-neo1973-gta02.c
  12
  13 diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
  14 index 8c7d949..b6b1211 100644
  15 --- a/drivers/leds/Kconfig
  16 +++ b/drivers/leds/Kconfig
  17 @@ -153,6 +153,12 @@ config LEDS_NEO1973_VIBRATOR
  18         help
  19           This option enables support for the vibrator on the FIC Neo1973.
  20
  21 +config LEDS_NEO1973_GTA02
  22 +       tristate "LED Support for the FIC Neo1973 (GTA02)"
  23 +       depends on LEDS_CLASS && MACH_NEO1973_GTA02
  24 +       help
  25 +         This option enables support for the LEDs on the FIC Neo1973.
  26 +
  27  comment "LED Triggers"
  28
  29  config LEDS_TRIGGERS
  30 diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
  31 index 148fe51..3a9df6a 100644
  32 --- a/drivers/leds/Makefile
  33 +++ b/drivers/leds/Makefile
  34 @@ -22,6 +22,7 @@ obj-$(CONFIG_LEDS_CLEVO_MAIL)         += leds-clevo-mail.o
  35  obj-$(CONFIG_LEDS_HP6XX)               += leds-hp6xx.o
  36  obj-$(CONFIG_LEDS_FSG)                 += leds-fsg.o
  37  obj-$(CONFIG_LEDS_NEO1973_VIBRATOR)    += leds-neo1973-vibrator.o
  38 +obj-$(CONFIG_LEDS_NEO1973_GTA02)       += leds-neo1973-gta02.o
  39
  40  # LED Triggers
  41  obj-$(CONFIG_LEDS_TRIGGER_TIMER)       += ledtrig-timer.o
  42 diff --git a/drivers/leds/leds-neo1973-gta02.c b/drivers/leds/leds-neo1973-gta02.c
  43 new file mode 100644
  44 index 0000000..bf1d540
  45 --- /dev/null
  46 +++ b/drivers/leds/leds-neo1973-gta02.c
  47 @@ -0,0 +1,226 @@
  48 +/*
  49 + * LED driver for the FIC Neo1973 GTA02 GSM phone
  50 + *
  51 + * (C) 2006-2007 by OpenMoko, Inc.
  52 + * Author: Harald Welte <laforge@openmoko.org>
  53 + * All rights reserved.
  54 + *
  55 + * This program is free software; you can redistribute it and/or modify
  56 + * it under the terms of the GNU General Public License version 2 as
  57 + * published by the Free Software Foundation.
  58 + *
  59 + */
  60 +
  61 +#include <linux/kernel.h>
  62 +#include <linux/init.h>
  63 +#include <linux/platform_device.h>
  64 +#include <linux/leds.h>
  65 +#include <asm/hardware.h>
  66 +#include <asm/mach-types.h>
  67 +#include <asm/arch/pwm.h>
  68 +#include <asm/arch/gta02.h>
  69 +#include <asm/plat-s3c/regs-timer.h>
  70 +
  71 +#define MAX_LEDS 3
  72 +#define COUNTER 256
  73 +
  74 +struct gta02_led_priv
  75 +{
  76 +       struct mutex mutex;
  77 +       struct led_classdev cdev;
  78 +       struct s3c2410_pwm pwm;
  79 +       unsigned int gpio;
  80 +       unsigned int has_pwm;
  81 +};
  82 +
  83 +struct gta02_led_bundle
  84 +{
  85 +       int num_leds;
  86 +       struct gta02_led_priv led[MAX_LEDS];
  87 +};
  88 +
  89 +static inline struct gta02_led_priv *to_priv(struct led_classdev *led_cdev)
  90 +{
  91 +       return container_of(led_cdev, struct gta02_led_priv, cdev);
  92 +}
  93 +
  94 +static inline struct gta02_led_bundle *to_bundle(struct led_classdev *led_cdev)
  95 +{
  96 +       return dev_get_drvdata(led_cdev->dev);
  97 +}
  98 +
  99 +static void gta02led_set(struct led_classdev *led_cdev,
 100 +               enum led_brightness value)
 101 +{
 102 +       struct gta02_led_priv *lp = to_priv(led_cdev);
 103 +
 104 +       /*
 105 +        * value == 255 -> 99% duty cycle (full power)
 106 +        * value == 128 -> 50% duty cycle (medium power)
 107 +        * value == 0 -> 0% duty cycle (zero power)
 108 +        */
 109 +       mutex_lock(&lp->mutex);
 110 +       if (lp->has_pwm) {
 111 +                       s3c2410_pwm_duty_cycle(value, &lp->pwm);
 112 +       } else {
 113 +               if (value)
 114 +                       s3c2410_gpio_setpin(lp->gpio, 1);
 115 +               else
 116 +                       s3c2410_gpio_setpin(lp->gpio, 0);
 117 +       }
 118 +       mutex_unlock(&lp->mutex);
 119 +}
 120 +
 121 +#ifdef CONFIG_PM
 122 +static int gta02led_suspend(struct platform_device *pdev, pm_message_t state)
 123 +{
 124 +       struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
 125 +       int i;
 126 +
 127 +       for (i = 0; i < bundle->num_leds; i++)
 128 +               led_classdev_suspend(&bundle->led[i].cdev);
 129 +
 130 +       return 0;
 131 +}
 132 +
 133 +static int gta02led_resume(struct platform_device *pdev)
 134 +{
 135 +       struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
 136 +       int i;
 137 +
 138 +       for (i = 0; i < bundle->num_leds; i++)
 139 +               led_classdev_resume(&bundle->led[i].cdev);
 140 +
 141 +       return 0;
 142 +}
 143 +#endif
 144 +
 145 +static int __init gta02led_probe(struct platform_device *pdev)
 146 +{
 147 +       int i, rc;
 148 +       struct gta02_led_bundle *bundle;
 149 +
 150 +       if (!machine_is_neo1973_gta02())
 151 +               return -EIO;
 152 +
 153 +       bundle = kzalloc(sizeof(struct gta02_led_bundle), GFP_KERNEL);
 154 +       if (!bundle)
 155 +               return -ENOMEM;
 156 +       platform_set_drvdata(pdev, bundle);
 157 +
 158 +       for (i = 0; i < pdev->num_resources; i++) {
 159 +               struct gta02_led_priv *lp;
 160 +               struct resource *r;
 161 +
 162 +               if (i >= MAX_LEDS)
 163 +                       break;
 164 +
 165 +               r = platform_get_resource(pdev, 0, i);
 166 +               if (!r || !r->start || !r->name)
 167 +                       continue;
 168 +
 169 +               lp = &bundle->led[i];
 170 +
 171 +               lp->gpio = r->start;
 172 +               lp->cdev.name = r->name;
 173 +               lp->cdev.brightness_set = gta02led_set;
 174 +
 175 +               switch (lp->gpio) {
 176 +               case S3C2410_GPB0:
 177 +                       lp->has_pwm = 1;
 178 +                       lp->pwm.timerid = PWM0;
 179 +                       s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB0_TOUT0);
 180 +                       break;
 181 +               case S3C2410_GPB1:
 182 +                       lp->has_pwm = 1;
 183 +                       lp->pwm.timerid = PWM1;
 184 +                       s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB1_TOUT1);
 185 +                       break;
 186 +               case S3C2410_GPB2:
 187 +                       lp->has_pwm = 1;
 188 +                       lp->pwm.timerid = PWM2;
 189 +                       s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB2_TOUT2);
 190 +                       break;
 191 +               case S3C2410_GPB3:
 192 +                       lp->has_pwm = 1;
 193 +                       lp->pwm.timerid = PWM3;
 194 +                       s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB3_TOUT3);
 195 +                       break;
 196 +               default:
 197 +                       break;
 198 +               }
 199 +
 200 +               lp->pwm.prescaler = 0;
 201 +               lp->pwm.divider = S3C2410_TCFG1_MUX3_DIV8;
 202 +               lp->pwm.counter = COUNTER;
 203 +               lp->pwm.comparer = COUNTER;
 204 +               s3c2410_pwm_enable(&lp->pwm);
 205 +               s3c2410_pwm_start(&lp->pwm);
 206 +
 207 +               switch (lp->gpio) {
 208 +               case S3C2410_GPB0:
 209 +               case S3C2410_GPB1:
 210 +               case S3C2410_GPB2:
 211 +                       lp->has_pwm = 0;
 212 +                       s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPIO_OUTPUT);
 213 +                       s3c2410_gpio_setpin(lp->gpio, 0);
 214 +                       break;
 215 +               default:
 216 +                       break;
 217 +               }
 218 +
 219 +               mutex_init(&lp->mutex);
 220 +               rc = led_classdev_register(&pdev->dev, &lp->cdev);
 221 +       }
 222 +
 223 +       return 0;
 224 +}
 225 +
 226 +static int gta02led_remove(struct platform_device *pdev)
 227 +{
 228 +       struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
 229 +       int i;
 230 +
 231 +       for (i = 0; i < bundle->num_leds; i++) {
 232 +               struct gta02_led_priv *lp = &bundle->led[i];
 233 +               if (lp->has_pwm)
 234 +                       s3c2410_pwm_disable(&lp->pwm);
 235 +
 236 +               led_classdev_unregister(&lp->cdev);
 237 +               mutex_destroy(&lp->mutex);
 238 +       }
 239 +
 240 +       platform_set_drvdata(pdev, NULL);
 241 +       kfree(bundle);
 242 +
 243 +       return 0;
 244 +}
 245 +
 246 +static struct platform_driver gta02led_driver = {
 247 +       .probe          = gta02led_probe,
 248 +       .remove         = gta02led_remove,
 249 +#ifdef CONFIG_PM
 250 +       .suspend        = gta02led_suspend,
 251 +       .resume         = gta02led_resume,
 252 +#endif
 253 +       .driver         = {
 254 +               .name           = "gta02-led",
 255 +       },
 256 +};
 257 +
 258 +static int __init gta02led_init(void)
 259 +{
 260 +       return platform_driver_register(&gta02led_driver);
 261 +}
 262 +
 263 +static void __exit gta02led_exit(void)
 264 +{
 265 +       platform_driver_unregister(&gta02led_driver);
 266 +}
 267 +
 268 +module_init(gta02led_init);
 269 +module_exit(gta02led_exit);
 270 +
 271 +MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
 272 +MODULE_DESCRIPTION("FIC Neo1973 GTA02 LED driver");
 273 +MODULE_LICENSE("GPL");
 274 --
 275 1.5.6.3
 276