target/linux/ifxmips/patches-2.6.30/160-led.patch

   1 Index: linux-2.6.30.8/drivers/leds/Kconfig
   2 ===================================================================
   3 --- linux-2.6.30.8.orig/drivers/leds/Kconfig    2009-10-19 21:31:31.000000000 +0200
   4 +++ linux-2.6.30.8/drivers/leds/Kconfig 2009-10-19 21:31:32.000000000 +0200
   5 @@ -227,6 +227,12 @@
   6           This option enables support for BD2802GU RGB LED driver chips
   7           accessed via the I2C bus.
   8
   9 +config LEDS_IFXMIPS
  10 +       tristate "LED Support for IFXMIPS  LEDs"
  11 +       depends on LEDS_CLASS && IFXMIPS
  12 +       help
  13 +         This option enables support for the CM-X270 LEDs.
  14 +
  15  comment "LED Triggers"
  16
  17  config LEDS_TRIGGERS
  18 Index: linux-2.6.30.8/drivers/leds/Makefile
  19 ===================================================================
  20 --- linux-2.6.30.8.orig/drivers/leds/Makefile   2009-10-19 21:31:31.000000000 +0200
  21 +++ linux-2.6.30.8/drivers/leds/Makefile        2009-10-19 21:31:32.000000000 +0200
  22 @@ -27,6 +27,7 @@
  23  obj-$(CONFIG_LEDS_DA903X)              += leds-da903x.o
  24  obj-$(CONFIG_LEDS_WM8350)              += leds-wm8350.o
  25  obj-$(CONFIG_LEDS_PWM)                 += leds-pwm.o
  26 +obj-$(CONFIG_LEDS_IFXMIPS)             += leds-ifxmips.o
  27
  28  # LED SPI Drivers
  29  obj-$(CONFIG_LEDS_DAC124S085)          += leds-dac124s085.o
  30 Index: linux-2.6.30.8/drivers/leds/leds-ifxmips.c
  31 ===================================================================
  32 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
  33 +++ linux-2.6.30.8/drivers/leds/leds-ifxmips.c  2009-10-19 21:39:59.000000000 +0200
  34 @@ -0,0 +1,196 @@
  35 +/*
  36 + *   This program is free software; you can redistribute it and/or modify
  37 + *   it under the terms of the GNU General Public License as published by
  38 + *   the Free Software Foundation; either version 2 of the License, or
  39 + *   (at your option) any later version.
  40 + *
  41 + *   This program is distributed in the hope that it will be useful,
  42 + *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  43 + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  44 + *   GNU General Public License for more details.
  45 + *
  46 + *   You should have received a copy of the GNU General Public License
  47 + *   along with this program; if not, write to the Free Software
  48 + *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  49 + *
  50 + *   Copyright (C) 2006 infineon
  51 + *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  52 + *
  53 + */
  54 +
  55 +#include <linux/kernel.h>
  56 +#include <linux/module.h>
  57 +#include <linux/version.h>
  58 +#include <linux/types.h>
  59 +#include <linux/fs.h>
  60 +#include <linux/init.h>
  61 +#include <linux/platform_device.h>
  62 +#include <linux/uaccess.h>
  63 +#include <linux/unistd.h>
  64 +#include <linux/errno.h>
  65 +#include <linux/leds.h>
  66 +#include <linux/delay.h>
  67 +
  68 +#include <ifxmips.h>
  69 +#include <ifxmips_gpio.h>
  70 +#include <ifxmips_pmu.h>
  71 +
  72 +#define DRVNAME                                        "ifxmips_led"
  73 +
  74 +/* might need to be changed depending on shift register used on the pcb */
  75 +#if 1
  76 +#define IFXMIPS_LED_CLK_EDGE                   IFXMIPS_LED_FALLING
  77 +#else
  78 +#define IFXMIPS_LED_CLK_EDGE                   IFXMIPS_LED_RISING
  79 +#endif
  80 +
  81 +#define IFXMIPS_LED_SPEED                      IFXMIPS_LED_8HZ
  82 +
  83 +#define IFXMIPS_LED_GPIO_PORT                  0
  84 +
  85 +#define IFXMIPS_MAX_LED                                24
  86 +
  87 +struct ifxmips_led {
  88 +       struct led_classdev cdev;
  89 +       u8 bit;
  90 +};
  91 +
  92 +void ifxmips_led_set(unsigned int led)
  93 +{
  94 +       led &= 0xffffff;
  95 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
  96 +}
  97 +EXPORT_SYMBOL(ifxmips_led_set);
  98 +
  99 +void ifxmips_led_clear(unsigned int led)
 100 +{
 101 +       led = ~(led & 0xffffff);
 102 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
 103 +}
 104 +EXPORT_SYMBOL(ifxmips_led_clear);
 105 +
 106 +void ifxmips_led_blink_set(unsigned int led)
 107 +{
 108 +       led &= 0xffffff;
 109 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
 110 +}
 111 +EXPORT_SYMBOL(ifxmips_led_blink_set);
 112 +
 113 +void ifxmips_led_blink_clear(unsigned int led)
 114 +{
 115 +       led = ~(led & 0xffffff);
 116 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
 117 +}
 118 +EXPORT_SYMBOL(ifxmips_led_blink_clear);
 119 +
 120 +static void ifxmips_ledapi_set(struct led_classdev *led_cdev,
 121 +       enum led_brightness value)
 122 +{
 123 +       struct ifxmips_led *led_dev =
 124 +               container_of(led_cdev, struct ifxmips_led, cdev);
 125 +
 126 +       if (value)
 127 +               ifxmips_led_set(1 << led_dev->bit);
 128 +       else
 129 +               ifxmips_led_clear(1 << led_dev->bit);
 130 +}
 131 +
 132 +void ifxmips_led_setup_gpio(void)
 133 +{
 134 +       int i = 0;
 135 +
 136 +       /* leds are controlled via a shift register
 137 +          we need to setup pins SH,D,ST (4,5,6) to make it work */
 138 +       for (i = 4; i < 7; i++) {
 139 +               ifxmips_port_set_altsel0(IFXMIPS_LED_GPIO_PORT, i);
 140 +               ifxmips_port_clear_altsel1(IFXMIPS_LED_GPIO_PORT, i);
 141 +               ifxmips_port_set_dir_out(IFXMIPS_LED_GPIO_PORT, i);
 142 +               ifxmips_port_set_open_drain(IFXMIPS_LED_GPIO_PORT, i);
 143 +       }
 144 +}
 145 +
 146 +static int ifxmips_led_probe(struct platform_device *dev)
 147 +{
 148 +       int i = 0;
 149 +
 150 +       ifxmips_led_setup_gpio();
 151 +
 152 +       ifxmips_w32(0, IFXMIPS_LED_AR);
 153 +       ifxmips_w32(0, IFXMIPS_LED_CPU0);
 154 +       ifxmips_w32(0, IFXMIPS_LED_CPU1);
 155 +       ifxmips_w32(LED_CON0_SWU, IFXMIPS_LED_CON0);
 156 +       ifxmips_w32(0, IFXMIPS_LED_CON1);
 157 +
 158 +       /* setup the clock edge that the shift register is triggered on */
 159 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK,
 160 +               IFXMIPS_LED_CON0);
 161 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE,
 162 +               IFXMIPS_LED_CON0);
 163 +
 164 +       /* per default leds 15-0 are set */
 165 +       ifxmips_w32(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
 166 +
 167 +       /* leds are update periodically by the FPID */
 168 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK,
 169 +               IFXMIPS_LED_CON1);
 170 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI,
 171 +               IFXMIPS_LED_CON1);
 172 +
 173 +       /* set led update speed */
 174 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK,
 175 +               IFXMIPS_LED_CON1);
 176 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED,
 177 +               IFXMIPS_LED_CON1);
 178 +
 179 +       /* adsl 0 and 1 leds are updated by the arc */
 180 +       ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC,
 181 +               IFXMIPS_LED_CON0);
 182 +
 183 +       /* per default, the leds are turned on */
 184 +       ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
 185 +
 186 +       for (i = 0; i < IFXMIPS_MAX_LED; i++) {
 187 +               struct ifxmips_led *tmp =
 188 +                       kzalloc(sizeof(struct ifxmips_led), GFP_KERNEL);
 189 +               tmp->cdev.brightness_set = ifxmips_ledapi_set;
 190 +               tmp->cdev.name = kmalloc(sizeof("ifxmips:led:00"), GFP_KERNEL);
 191 +               sprintf((char *)tmp->cdev.name, "ifxmips:led:%02d", i);
 192 +               tmp->cdev.default_trigger = NULL;
 193 +               tmp->bit = i;
 194 +               led_classdev_register(&dev->dev, &tmp->cdev);
 195 +       }
 196 +
 197 +       return 0;
 198 +}
 199 +
 200 +static int ifxmips_led_remove(struct platform_device *pdev)
 201 +{
 202 +       return 0;
 203 +}
 204 +
 205 +static struct platform_driver ifxmips_led_driver = {
 206 +       .probe = ifxmips_led_probe,
 207 +       .remove = ifxmips_led_remove,
 208 +       .driver = {
 209 +               .name = DRVNAME,
 210 +               .owner = THIS_MODULE,
 211 +       },
 212 +};
 213 +
 214 +int __init ifxmips_led_init(void)
 215 +{
 216 +       int ret = platform_driver_register(&ifxmips_led_driver);
 217 +       if (ret)
 218 +               printk(KERN_INFO
 219 +                       "ifxmips_led: Error registering platfom driver!");
 220 +
 221 +       return ret;
 222 +}
 223 +
 224 +void __exit ifxmips_led_exit(void)
 225 +{
 226 +       platform_driver_unregister(&ifxmips_led_driver);
 227 +}
 228 +
 229 +module_init(ifxmips_led_init);
 230 +module_exit(ifxmips_led_exit);