arch/m68k/platform/520x/gpio.c

   1 /*
   2  * Coldfire generic GPIO support
   3  *
   4  * (C) Copyright 2009, Steven King <sfking@fdwdc.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14 */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18
  19 #include <asm/coldfire.h>
  20 #include <asm/mcfsim.h>
  21 #include <asm/mcfgpio.h>
  22
  23 static struct mcf_gpio_chip mcf_gpio_chips[] = {
  24         {
  25                 .gpio_chip                      = {
  26                         .label                  = "PIRQ",
  27                         .request                = mcf_gpio_request,
  28                         .free                   = mcf_gpio_free,
  29                         .direction_input        = mcf_gpio_direction_input,
  30                         .direction_output       = mcf_gpio_direction_output,
  31                         .get                    = mcf_gpio_get_value,
  32                         .set                    = mcf_gpio_set_value,
  33                         .ngpio                  = 8,
  34                 },
  35                 .pddr                           = (void __iomem *) MCFEPORT_EPDDR,
  36                 .podr                           = (void __iomem *) MCFEPORT_EPDR,
  37                 .ppdr                           = (void __iomem *) MCFEPORT_EPPDR,
  38         },
  39         {
  40                 .gpio_chip                      = {
  41                         .label                  = "CS",
  42                         .request                = mcf_gpio_request,
  43                         .free                   = mcf_gpio_free,
  44                         .direction_input        = mcf_gpio_direction_input,
  45                         .direction_output       = mcf_gpio_direction_output,
  46                         .get                    = mcf_gpio_get_value,
  47                         .set                    = mcf_gpio_set_value_fast,
  48                         .base                   = 9,
  49                         .ngpio                  = 3,
  50                 },
  51                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_CS,
  52                 .podr                           = (void __iomem *) MCFGPIO_PODR_CS,
  53                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_CS,
  54                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_CS,
  55                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_CS,
  56         },
  57         {
  58                 .gpio_chip                      = {
  59                         .label                  = "FECI2C",
  60                         .request                = mcf_gpio_request,
  61                         .free                   = mcf_gpio_free,
  62                         .direction_input        = mcf_gpio_direction_input,
  63                         .direction_output       = mcf_gpio_direction_output,
  64                         .get                    = mcf_gpio_get_value,
  65                         .set                    = mcf_gpio_set_value_fast,
  66                         .base                   = 16,
  67                         .ngpio                  = 4,
  68                 },
  69                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_FECI2C,
  70                 .podr                           = (void __iomem *) MCFGPIO_PODR_FECI2C,
  71                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_FECI2C,
  72                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_FECI2C,
  73                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_FECI2C,
  74         },
  75         {
  76                 .gpio_chip                      = {
  77                         .label                  = "QSPI",
  78                         .request                = mcf_gpio_request,
  79                         .free                   = mcf_gpio_free,
  80                         .direction_input        = mcf_gpio_direction_input,
  81                         .direction_output       = mcf_gpio_direction_output,
  82                         .get                    = mcf_gpio_get_value,
  83                         .set                    = mcf_gpio_set_value_fast,
  84                         .base                   = 24,
  85                         .ngpio                  = 4,
  86                 },
  87                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_QSPI,
  88                 .podr                           = (void __iomem *) MCFGPIO_PODR_QSPI,
  89                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_QSPI,
  90                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_QSPI,
  91                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_QSPI,
  92         },
  93         {
  94                 .gpio_chip                      = {
  95                         .label                  = "TIMER",
  96                         .request                = mcf_gpio_request,
  97                         .free                   = mcf_gpio_free,
  98                         .direction_input        = mcf_gpio_direction_input,
  99                         .direction_output       = mcf_gpio_direction_output,
 100                         .get                    = mcf_gpio_get_value,
 101                         .set                    = mcf_gpio_set_value_fast,
 102                         .base                   = 32,
 103                         .ngpio                  = 4,
 104                 },
 105                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_TIMER,
 106                 .podr                           = (void __iomem *) MCFGPIO_PODR_TIMER,
 107                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_TIMER,
 108                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_TIMER,
 109                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_TIMER,
 110         },
 111         {
 112                 .gpio_chip                      = {
 113                         .label                  = "UART",
 114                         .request                = mcf_gpio_request,
 115                         .free                   = mcf_gpio_free,
 116                         .direction_input        = mcf_gpio_direction_input,
 117                         .direction_output       = mcf_gpio_direction_output,
 118                         .get                    = mcf_gpio_get_value,
 119                         .set                    = mcf_gpio_set_value_fast,
 120                         .base                   = 40,
 121                         .ngpio                  = 8,
 122                 },
 123                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_UART,
 124                 .podr                           = (void __iomem *) MCFGPIO_PODR_UART,
 125                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_UART,
 126                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_UART,
 127                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_UART,
 128         },
 129         {
 130                 .gpio_chip                      = {
 131                         .label                  = "FECH",
 132                         .request                = mcf_gpio_request,
 133                         .free                   = mcf_gpio_free,
 134                         .direction_input        = mcf_gpio_direction_input,
 135                         .direction_output       = mcf_gpio_direction_output,
 136                         .get                    = mcf_gpio_get_value,
 137                         .set                    = mcf_gpio_set_value_fast,
 138                         .base                   = 48,
 139                         .ngpio                  = 8,
 140                 },
 141                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_FECH,
 142                 .podr                           = (void __iomem *) MCFGPIO_PODR_FECH,
 143                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_FECH,
 144                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_FECH,
 145                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_FECH,
 146         },
 147         {
 148                 .gpio_chip                      = {
 149                         .label                  = "FECL",
 150                         .request                = mcf_gpio_request,
 151                         .free                   = mcf_gpio_free,
 152                         .direction_input        = mcf_gpio_direction_input,
 153                         .direction_output       = mcf_gpio_direction_output,
 154                         .get                    = mcf_gpio_get_value,
 155                         .set                    = mcf_gpio_set_value_fast,
 156                         .base                   = 56,
 157                         .ngpio                  = 8,
 158                 },
 159                 .pddr                           = (void __iomem *) MCFGPIO_PDDR_FECL,
 160                 .podr                           = (void __iomem *) MCFGPIO_PODR_FECL,
 161                 .ppdr                           = (void __iomem *) MCFGPIO_PPDSDR_FECL,
 162                 .setr                           = (void __iomem *) MCFGPIO_PPDSDR_FECL,
 163                 .clrr                           = (void __iomem *) MCFGPIO_PCLRR_FECL,
 164         },
 165 };
 166
 167 static int __init mcf_gpio_init(void)
 168 {
 169         unsigned i = 0;
 170         while (i < ARRAY_SIZE(mcf_gpio_chips))
 171                 (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]);
 172         return 0;
 173 }
 174
 175 core_initcall(mcf_gpio_init);