target/linux/ifxmips/patches-2.6.30/600-ebu-gpio.patch

   1 Index: linux-2.6.30.10/drivers/gpio/Kconfig
   2 ===================================================================
   3 --- linux-2.6.30.10.orig/drivers/gpio/Kconfig   2010-03-24 21:55:56.000000000 +0100
   4 +++ linux-2.6.30.10/drivers/gpio/Kconfig        2010-03-24 21:56:36.000000000 +0100
   5 @@ -176,4 +176,12 @@
   6           SPI driver for Microchip MCP23S08 I/O expander.  This provides
   7           a GPIO interface supporting inputs and outputs.
   8
   9 +comment "EBU GPIO expanders:"
  10 +
  11 +config GPIO_IFXMIPS_EBU
  12 +       boolean "IFXMIPS EBU attached I/O expander"
  13 +       depends on IFXMIPS
  14 +       help
  15 +         This driver allows you to drive latches attached to the SoCc External Bus Unit
  16 +
  17  endif
  18 Index: linux-2.6.30.10/drivers/gpio/Makefile
  19 ===================================================================
  20 --- linux-2.6.30.10.orig/drivers/gpio/Makefile  2010-03-24 21:55:56.000000000 +0100
  21 +++ linux-2.6.30.10/drivers/gpio/Makefile       2010-03-24 21:56:36.000000000 +0100
  22 @@ -12,3 +12,4 @@
  23  obj-$(CONFIG_GPIO_TWL4030)     += twl4030-gpio.o
  24  obj-$(CONFIG_GPIO_XILINX)      += xilinx_gpio.o
  25  obj-$(CONFIG_GPIO_BT8XX)       += bt8xxgpio.o
  26 +obj-$(CONFIG_GPIO_IFXMIPS_EBU) += ifxmips_ebu_gpio.o
  27 Index: linux-2.6.30.10/arch/mips/ifxmips/board.c
  28 ===================================================================
  29 --- linux-2.6.30.10.orig/arch/mips/ifxmips/board.c      2010-03-25 10:43:06.000000000 +0100
  30 +++ linux-2.6.30.10/arch/mips/ifxmips/board.c   2010-03-25 12:40:54.000000000 +0100
  31 @@ -111,6 +111,11 @@
  32         .name = "ifxmips_wdt",
  33  };
  34
  35 +static struct platform_device ifxmips_ebu = {
  36 +       .id = 0,
  37 +       .name = "ifxmips_ebu",
  38 +};
  39 +
  40  static struct resource ifxmips_mtd_resource = {
  41         .start  = IFXMIPS_FLASH_START,
  42         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
  43 @@ -145,10 +150,18 @@
  44  static struct gpio_led arv452_gpio_leds[] = {
  45         { .name = "ifx:blue:power", .gpio = 3, .active_low = 1, },
  46         { .name = "ifx:blue:adsl", .gpio = 4, .active_low = 1, },
  47 -       { .name = "ifx:pink:internet", .gpio = 5, .active_low = 1, },
  48 +       { .name = "ifx:blue:internet", .gpio = 5, .active_low = 1, },
  49         { .name = "ifx:red:power", .gpio = 6, .active_low = 1, },
  50         { .name = "ifx:yello:wps", .gpio = 7, .active_low = 1, },
  51         { .name = "ifx:red:wps", .gpio = 9, .active_low = 1, },
  52 +       { .name = "ifx:blue:voip", .gpio = 32, .active_low = 1, },
  53 +       { .name = "ifx:blue:fxs1", .gpio = 33, .active_low = 1, },
  54 +       { .name = "ifx:blue:fxs2", .gpio = 34, .active_low = 1, },
  55 +       { .name = "ifx:blue:fxo", .gpio = 35, .active_low = 1, },
  56 +       { .name = "ifx:blue:voice", .gpio = 36, .active_low = 1, },
  57 +       { .name = "ifx:blue:usb", .gpio = 37, .active_low = 1, },
  58 +       { .name = "ifx:blue:wlan", .gpio = 38, .active_low = 1, },
  59 +       { .name = "ifx:red:internet", .gpio = 41, .active_low = 1, },
  60  };
  61
  62  static struct gpio_led_platform_data ifxmips_gpio_led_data;
  63 @@ -205,6 +218,7 @@
  64  struct platform_device *arv452_devs[] = {
  65         &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
  66         &ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
  67 +       &ifxmips_ebu,
  68  #ifdef CONFIG_LEDS_GPIO
  69         &ifxmips_gpio_leds,
  70  #endif
  71 Index: linux-2.6.30.10/drivers/gpio/ifxmips_ebu_gpio.c
  72 ===================================================================
  73 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
  74 +++ linux-2.6.30.10/drivers/gpio/ifxmips_ebu_gpio.c     2010-03-25 12:47:07.000000000 +0100
  75 @@ -0,0 +1,121 @@
  76 +/*
  77 + *   This program is free software; you can redistribute it and/or modify
  78 + *   it under the terms of the GNU General Public License as published by
  79 + *   the Free Software Foundation; either version 2 of the License, or
  80 + *   (at your option) any later version.
  81 + *
  82 + *   This program is distributed in the hope that it will be useful,
  83 + *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  84 + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  85 + *   GNU General Public License for more details.
  86 + *
  87 + *   You should have received a copy of the GNU General Public License
  88 + *   along with this program; if not, write to the Free Software
  89 + *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  90 + *
  91 + *   Copyright (C) 2010 John Crispin <blogic@openwrt.org>
  92 + */
  93 +
  94 +#include <linux/init.h>
  95 +#include <linux/platform_device.h>
  96 +#include <linux/mutex.h>
  97 +#include <linux/gpio.h>
  98 +#include <ifxmips.h>
  99 +
 100 +#define IFXMIPS_EBU_START      0x14000000
 101 +#define IFXMIPS_EBU_MAX                0x00001000
 102 +#define IFXMIPS_EBU_BUSCON     0x1e7ff
 103 +#define IFXMIPS_EBU_WP         0x80000000
 104 +
 105 +static int shadow = (1 << 10) | (1 << 8);
 106 +static void __iomem *virt;
 107 +
 108 +static int
 109 +ifxmips_ebu_direction_input(struct gpio_chip *chip, unsigned offset)
 110 +{
 111 +       return -EINVAL;
 112 +}
 113 +
 114 +static int
 115 +ifxmips_ebu_direction_output(struct gpio_chip *chip, unsigned offset, int value)
 116 +{
 117 +       return 0;
 118 +}
 119 +
 120 +static int
 121 +ifxmips_ebu_get(struct gpio_chip *chip, unsigned offset)
 122 +{
 123 +       return -EINVAL;
 124 +}
 125 +
 126 +static void
 127 +ifxmips_ebu_set(struct gpio_chip *chip, unsigned offset, int value)
 128 +{
 129 +       if(value)
 130 +               shadow |= (1 << offset);
 131 +       else
 132 +               shadow &= ~(1 << offset);
 133 +       ifxmips_w32(IFXMIPS_EBU_BUSCON, IFXMIPS_EBU_BUSCON1);
 134 +       *((__u16*)virt) = shadow;
 135 +       ifxmips_w32(IFXMIPS_EBU_BUSCON | IFXMIPS_EBU_WP, IFXMIPS_EBU_BUSCON1);
 136 +}
 137 +
 138 +static struct gpio_chip
 139 +ifxmips_ebu_chip =
 140 +{
 141 +       .label = "ifxmips_ebu",
 142 +       .direction_input = ifxmips_ebu_direction_input,
 143 +       .direction_output = ifxmips_ebu_direction_output,
 144 +       .set = ifxmips_ebu_set,
 145 +       .get = ifxmips_ebu_get,
 146 +       .base = 32,
 147 +       .ngpio = 16,
 148 +       .can_sleep = 1,
 149 +       .owner = THIS_MODULE,
 150 +};
 151 +
 152 +static int __devinit
 153 +ifxmips_ebu_probe(struct platform_device *dev)
 154 +{
 155 +       ifxmips_w32(IFXMIPS_EBU_START | 0x1, IFXMIPS_EBU_ADDRSEL1);
 156 +       ifxmips_w32(IFXMIPS_EBU_BUSCON | IFXMIPS_EBU_WP, IFXMIPS_EBU_BUSCON1);
 157 +       virt = ioremap_nocache(IFXMIPS_EBU_START, IFXMIPS_EBU_MAX);
 158 +       if(gpiochip_add(&ifxmips_ebu_chip))
 159 +               return -EINVAL;
 160 +       return 0;
 161 +}
 162 +
 163 +static int
 164 +ifxmips_ebu_remove(struct platform_device *dev)
 165 +{
 166 +       return gpiochip_remove(&ifxmips_ebu_chip);
 167 +}
 168 +
 169 +static struct platform_driver
 170 +ifxmips_ebu_driver = {
 171 +       .probe = ifxmips_ebu_probe,
 172 +       .remove = ifxmips_ebu_remove,
 173 +       .driver = {
 174 +               .name = "ifxmips_ebu",
 175 +               .owner = THIS_MODULE,
 176 +       },
 177 +};
 178 +
 179 +static int __init
 180 +ifxmips_ebu_init(void)
 181 +{
 182 +       return platform_driver_register(&ifxmips_ebu_driver);
 183 +}
 184 +
 185 +static void __exit
 186 +ifxmips_ebu_exit(void)
 187 +{
 188 +       platform_driver_unregister(&ifxmips_ebu_driver);
 189 +}
 190 +
 191 +module_init(ifxmips_ebu_init);
 192 +module_exit(ifxmips_ebu_exit);
 193 +
 194 +MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
 195 +MODULE_LICENSE("GPL v2");
 196 +MODULE_DESCRIPTION("ifxmips - EBU Latch GPIO-Expander");