drivers/media/video/rk_camsys/camsys_gpio.h

   1 #ifndef __RKCAMSYS_GPIO_H__
   2 #define __RKCAMSYS_GPIO_H__
   3
   4 #if defined(CONFIG_ARCH_ROCKCHIP)
   5 #define RK30_PIN0_PA0 (0)
   6 #define NUM_GROUP (32)
   7 #define GPIO_BANKS (9)
   8 #endif
   9
  10 static inline unsigned int camsys_gpio_group_pin(unsigned char *io_name)
  11 {
  12         unsigned char *pin_char;
  13         unsigned char pin;
  14
  15         if (strstr(io_name, "PA")) {
  16                 pin_char = strstr(io_name, "PA");
  17                 pin_char += 2;
  18                 pin = *pin_char - 0x30;
  19         } else if (strstr(io_name, "PB")) {
  20                 pin_char = strstr(io_name, "PB");
  21                 pin_char += 2;
  22                 pin = *pin_char - 0x30;
  23                 pin += 8;
  24         } else if (strstr(io_name, "PC")) {
  25                 pin_char = strstr(io_name, "PC");
  26                 pin_char += 2;
  27                 pin = *pin_char - 0x30;
  28                 pin += 16;
  29         } else if (strstr(io_name, "PD")) {
  30                 pin_char = strstr(io_name, "PD");
  31                 pin_char += 2;
  32                 pin = *pin_char - 0x30;
  33                 pin += 24;
  34         }
  35         return pin;
  36 }
  37
  38 static inline unsigned int camsys_gpio_group(unsigned char *io_name)
  39 {
  40         unsigned int group;
  41
  42         if (strstr(io_name, "PIN0"))
  43                 group = 0;
  44         else if (strstr(io_name, "PIN1"))
  45                 group = 1;
  46         else if (strstr(io_name, "PIN2"))
  47                 group = 2;
  48         else if (strstr(io_name, "PIN3"))
  49                 group = 3;
  50         else if (strstr(io_name, "PIN4"))
  51                 group = 4;
  52         else if (strstr(io_name, "PIN5"))
  53                 group = 5;
  54         else if (strstr(io_name, "PIN6"))
  55                 group = 6;
  56         else if (strstr(io_name, "PIN7"))
  57                 group = 7;
  58         else if (strstr(io_name, "PIN8"))
  59                 group = 8;
  60         return group;
  61 }
  62
  63 static inline unsigned int camsys_gpio_get(unsigned char *io_name)
  64 {
  65         unsigned int gpio;
  66         unsigned int group;
  67         unsigned int group_pin;
  68 #if (defined(CONFIG_ARCH_RK3066B) || defined(CONFIG_ARCH_RK3188) ||\
  69                 defined(CONFIG_ARCH_RK319X) || defined(CONFIG_ARCH_ROCKCHIP))
  70         if (strstr(io_name, "RK30_")) {
  71                 gpio = RK30_PIN0_PA0;
  72                 group = camsys_gpio_group(io_name);
  73                 group_pin = camsys_gpio_group_pin(io_name);
  74                 if (group >= GPIO_BANKS) {
  75                         gpio = 0xffffffff;
  76                 } else {
  77                         if (cpu_is_rk3288()) {
  78                                 /* bank 0 only has 24 pins ,not 32 pins */
  79                                 if (group > 0) {
  80                                         gpio += 24 + (group - 1) * NUM_GROUP
  81                                                         + group_pin;
  82                                 } else {
  83                                         gpio += group_pin;
  84                                 }
  85                         } else {
  86                                 gpio += group * NUM_GROUP + group_pin;
  87                         }
  88                 }
  89         }
  90 #endif
  91         return gpio;
  92 }
  93
  94 #endif
  95