source: trunk/target/linux/ifxmips/patches-2.6.30/160-led.patch @ 18082

Last change on this file since 18082 was 18082, checked in by blogic, 7 years ago

ifxmips: fold files/drivers/* into patches

File size: 6.8 KB
  • drivers/leds/Kconfig

    old new  
    227227          This option enables support for BD2802GU RGB LED driver chips 
    228228          accessed via the I2C bus. 
    229229 
     230config LEDS_IFXMIPS 
     231        tristate "LED Support for IFXMIPS  LEDs" 
     232        depends on LEDS_CLASS && IFXMIPS 
     233        help 
     234          This option enables support for the CM-X270 LEDs. 
     235 
    230236comment "LED Triggers" 
    231237 
    232238config LEDS_TRIGGERS 
  • drivers/leds/Makefile

    old new  
    2727obj-$(CONFIG_LEDS_DA903X)               += leds-da903x.o 
    2828obj-$(CONFIG_LEDS_WM8350)               += leds-wm8350.o 
    2929obj-$(CONFIG_LEDS_PWM)                  += leds-pwm.o 
     30obj-$(CONFIG_LEDS_IFXMIPS)              += leds-ifxmips.o 
    3031 
    3132# LED SPI Drivers 
    3233obj-$(CONFIG_LEDS_DAC124S085)           += leds-dac124s085.o 
  • new file linux-2.6.30.8/drivers/leds/leds-ifxmips.c

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