arch/blackfin/include/asm/gpio.h

   1 /*
   2  * Copyright 2006-2009 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #ifndef __ARCH_BLACKFIN_GPIO_H__
   8 #define __ARCH_BLACKFIN_GPIO_H__
   9
  10 #define gpio_bank(x)    ((x) >> 4)
  11 #define gpio_bit(x)     (1<<((x) & 0xF))
  12 #define gpio_sub_n(x)   ((x) & 0xF)
  13
  14 #define GPIO_BANKSIZE   16
  15 #define GPIO_BANK_NUM   DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
  16
  17 #include <mach/gpio.h>
  18
  19 #define PERIPHERAL_USAGE 1
  20 #define GPIO_USAGE 0
  21
  22 #ifndef BFIN_GPIO_PINT
  23 # define BFIN_GPIO_PINT 0
  24 #endif
  25
  26 #ifndef __ASSEMBLY__
  27
  28 #ifndef CONFIG_PINCTRL
  29
  30 #include <linux/compiler.h>
  31 #include <asm/blackfin.h>
  32 #include <asm/portmux.h>
  33 #include <asm/irq_handler.h>
  34
  35 /***********************************************************
  36 *
  37 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
  38 *
  39 * INPUTS/OUTPUTS:
  40 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
  41 *
  42 *
  43 * DESCRIPTION: These functions abstract direct register access
  44 *              to Blackfin processor General Purpose
  45 *              Ports Regsiters
  46 *
  47 * CAUTION: These functions do not belong to the GPIO Driver API
  48 *************************************************************
  49 * MODIFICATION HISTORY :
  50 **************************************************************/
  51
  52 void set_gpio_dir(unsigned, unsigned short);
  53 void set_gpio_inen(unsigned, unsigned short);
  54 void set_gpio_polar(unsigned, unsigned short);
  55 void set_gpio_edge(unsigned, unsigned short);
  56 void set_gpio_both(unsigned, unsigned short);
  57 void set_gpio_data(unsigned, unsigned short);
  58 void set_gpio_maska(unsigned, unsigned short);
  59 void set_gpio_maskb(unsigned, unsigned short);
  60 void set_gpio_toggle(unsigned);
  61 void set_gpiop_dir(unsigned, unsigned short);
  62 void set_gpiop_inen(unsigned, unsigned short);
  63 void set_gpiop_polar(unsigned, unsigned short);
  64 void set_gpiop_edge(unsigned, unsigned short);
  65 void set_gpiop_both(unsigned, unsigned short);
  66 void set_gpiop_data(unsigned, unsigned short);
  67 void set_gpiop_maska(unsigned, unsigned short);
  68 void set_gpiop_maskb(unsigned, unsigned short);
  69 unsigned short get_gpio_dir(unsigned);
  70 unsigned short get_gpio_inen(unsigned);
  71 unsigned short get_gpio_polar(unsigned);
  72 unsigned short get_gpio_edge(unsigned);
  73 unsigned short get_gpio_both(unsigned);
  74 unsigned short get_gpio_maska(unsigned);
  75 unsigned short get_gpio_maskb(unsigned);
  76 unsigned short get_gpio_data(unsigned);
  77 unsigned short get_gpiop_dir(unsigned);
  78 unsigned short get_gpiop_inen(unsigned);
  79 unsigned short get_gpiop_polar(unsigned);
  80 unsigned short get_gpiop_edge(unsigned);
  81 unsigned short get_gpiop_both(unsigned);
  82 unsigned short get_gpiop_maska(unsigned);
  83 unsigned short get_gpiop_maskb(unsigned);
  84 unsigned short get_gpiop_data(unsigned);
  85
  86 struct gpio_port_t {
  87         unsigned short data;
  88         unsigned short dummy1;
  89         unsigned short data_clear;
  90         unsigned short dummy2;
  91         unsigned short data_set;
  92         unsigned short dummy3;
  93         unsigned short toggle;
  94         unsigned short dummy4;
  95         unsigned short maska;
  96         unsigned short dummy5;
  97         unsigned short maska_clear;
  98         unsigned short dummy6;
  99         unsigned short maska_set;
 100         unsigned short dummy7;
 101         unsigned short maska_toggle;
 102         unsigned short dummy8;
 103         unsigned short maskb;
 104         unsigned short dummy9;
 105         unsigned short maskb_clear;
 106         unsigned short dummy10;
 107         unsigned short maskb_set;
 108         unsigned short dummy11;
 109         unsigned short maskb_toggle;
 110         unsigned short dummy12;
 111         unsigned short dir;
 112         unsigned short dummy13;
 113         unsigned short polar;
 114         unsigned short dummy14;
 115         unsigned short edge;
 116         unsigned short dummy15;
 117         unsigned short both;
 118         unsigned short dummy16;
 119         unsigned short inen;
 120 };
 121
 122 #ifdef BFIN_SPECIAL_GPIO_BANKS
 123 void bfin_special_gpio_free(unsigned gpio);
 124 int bfin_special_gpio_request(unsigned gpio, const char *label);
 125 # ifdef CONFIG_PM
 126 void bfin_special_gpio_pm_hibernate_restore(void);
 127 void bfin_special_gpio_pm_hibernate_suspend(void);
 128 # endif
 129 #endif
 130
 131 #ifdef CONFIG_PM
 132 void bfin_gpio_pm_hibernate_restore(void);
 133 void bfin_gpio_pm_hibernate_suspend(void);
 134 int bfin_gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
 135 int bfin_gpio_pm_standby_ctrl(unsigned ctrl);
 136
 137 static inline int bfin_pm_standby_setup(void)
 138 {
 139         return bfin_gpio_pm_standby_ctrl(1);
 140 }
 141
 142 static inline void bfin_pm_standby_restore(void)
 143 {
 144         bfin_gpio_pm_standby_ctrl(0);
 145 }
 146
 147
 148 struct gpio_port_s {
 149         unsigned short data;
 150         unsigned short maska;
 151         unsigned short maskb;
 152         unsigned short dir;
 153         unsigned short polar;
 154         unsigned short edge;
 155         unsigned short both;
 156         unsigned short inen;
 157
 158         unsigned short fer;
 159         unsigned short reserved;
 160         unsigned short mux;
 161 };
 162 #endif /*CONFIG_PM*/
 163
 164 /***********************************************************
 165 *
 166 * FUNCTIONS: Blackfin GPIO Driver
 167 *
 168 * INPUTS/OUTPUTS:
 169 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 170 *
 171 *
 172 * DESCRIPTION: Blackfin GPIO Driver API
 173 *
 174 * CAUTION:
 175 *************************************************************
 176 * MODIFICATION HISTORY :
 177 **************************************************************/
 178 int bfin_gpio_irq_request(unsigned gpio, const char *label);
 179 void bfin_gpio_irq_free(unsigned gpio);
 180 void bfin_gpio_irq_prepare(unsigned gpio);
 181
 182 static inline int irq_to_gpio(unsigned irq)
 183 {
 184         return irq - GPIO_IRQ_BASE;
 185 }
 186
 187 #else /* CONFIG_PINCTRL */
 188
 189 /*
 190  * CONFIG_PM is not working with pin control and should probably
 191  * avoid being selected when pin control is active, but so far,
 192  * these stubs are here to make allyesconfig and allmodconfig
 193  * compile properly. These functions are normally backed by the
 194  * CONFIG_ADI_GPIO custom GPIO implementation.
 195  */
 196
 197 static inline int bfin_pm_standby_setup(void)
 198 {
 199         return 0;
 200 }
 201
 202 static inline void bfin_pm_standby_restore(void)
 203 {
 204 }
 205
 206 #endif /* CONFIG_PINCTRL */
 207
 208 #include <asm/irq.h>
 209 #include <asm/errno.h>
 210
 211 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 212
 213 static inline int gpio_get_value(unsigned int gpio)
 214 {
 215         return __gpio_get_value(gpio);
 216 }
 217
 218 static inline void gpio_set_value(unsigned int gpio, int value)
 219 {
 220         __gpio_set_value(gpio, value);
 221 }
 222
 223 static inline int gpio_cansleep(unsigned int gpio)
 224 {
 225         return __gpio_cansleep(gpio);
 226 }
 227
 228 static inline int gpio_to_irq(unsigned gpio)
 229 {
 230         return __gpio_to_irq(gpio);
 231 }
 232 #endif /* __ASSEMBLY__ */
 233
 234 #endif /* __ARCH_BLACKFIN_GPIO_H__ */