arch/powerpc/include/asm/ppc4xx-gpio.h

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __ASM_PPC_GPIO_H
   9 #define __ASM_PPC_GPIO_H
  10
  11 #include <asm/types.h>
  12
  13 /* 4xx PPC's have 2 GPIO controllers */
  14 #if defined(CONFIG_405EZ) ||                                    \
  15         defined(CONFIG_440EP) || defined(CONFIG_440GR) ||       \
  16         defined(CONFIG_440EPX) || defined(CONFIG_440GRX) ||     \
  17         defined(CONFIG_460EX) || defined(CONFIG_460GT)
  18 #define GPIO_GROUP_MAX  2
  19 #else
  20 #define GPIO_GROUP_MAX  1
  21 #endif
  22
  23 /* GPIO controller */
  24 struct ppc4xx_gpio {
  25         u32 or;         /* Output Control */
  26         u32 tcr;        /* Tri-State Control */
  27         u32 osl;        /* Output Select 16..31 */
  28         u32 osh;        /* Output Select 0..15 */
  29         u32 tsl;        /* Tri-State Select 16..31 */
  30         u32 tsh;        /* Tri-State Select 0..15 */
  31         u32 odr;        /* Open Drain */
  32         u32 ir;         /* Input */
  33         u32 rr1;        /* Receive Register 1 */
  34         u32 rr2;        /* Receive Register 2 */
  35         u32 rr3;        /* Receive Register 3 */
  36         u32 reserved;
  37         u32 is1l;       /* Input Select 1 16..31 */
  38         u32 is1h;       /* Input Select 1 0..15 */
  39         u32 is2l;       /* Input Select 2 16..31 */
  40         u32 is2h;       /* Input Select 2 0..15 */
  41         u32 is3l;       /* Input Select 3 16..31 */
  42         u32 is3h;       /* Input Select 3 0..15 */
  43 };
  44
  45 /* Offsets */
  46 #define GPIOx_OR        0x00            /* GPIO Output Register */
  47 #define GPIOx_TCR       0x04            /* GPIO Three-State Control Register */
  48 #define GPIOx_OSL       0x08            /* GPIO Output Select Register (Bits 0-31) */
  49 #define GPIOx_OSH       0x0C            /* GPIO Ouput Select Register (Bits 32-63) */
  50 #define GPIOx_TSL       0x10            /* GPIO Three-State Select Register (Bits 0-31) */
  51 #define GPIOx_TSH       0x14            /* GPIO Three-State Select Register  (Bits 32-63) */
  52 #define GPIOx_ODR       0x18            /* GPIO Open drain Register */
  53 #define GPIOx_IR        0x1C            /* GPIO Input Register */
  54 #define GPIOx_RR1       0x20            /* GPIO Receive Register 1 */
  55 #define GPIOx_RR2       0x24            /* GPIO Receive Register 2 */
  56 #define GPIOx_RR3       0x28            /* GPIO Receive Register 3 */
  57 #define GPIOx_IS1L      0x30            /* GPIO Input Select Register 1 (Bits 0-31) */
  58 #define GPIOx_IS1H      0x34            /* GPIO Input Select Register 1 (Bits 32-63) */
  59 #define GPIOx_IS2L      0x38            /* GPIO Input Select Register 2 (Bits 0-31) */
  60 #define GPIOx_IS2H      0x3C            /* GPIO Input Select Register 2 (Bits 32-63) */
  61 #define GPIOx_IS3L      0x40            /* GPIO Input Select Register 3 (Bits 0-31) */
  62 #define GPIOx_IS3H      0x44            /* GPIO Input Select Register 3 (Bits 32-63) */
  63
  64 #define GPIO_OR(x)      (x+GPIOx_OR)    /* GPIO Output Register */
  65 #define GPIO_TCR(x)     (x+GPIOx_TCR)   /* GPIO Three-State Control Register */
  66 #define GPIO_OS(x)      (x+GPIOx_OSL)   /* GPIO Output Select Register High or Low */
  67 #define GPIO_TS(x)      (x+GPIOx_TSL)   /* GPIO Three-state Control Reg High or Low */
  68 #define GPIO_IS1(x)     (x+GPIOx_IS1L)  /* GPIO Input register1 High or Low */
  69 #define GPIO_IS2(x)     (x+GPIOx_IS2L)  /* GPIO Input register2 High or Low */
  70 #define GPIO_IS3(x)     (x+GPIOx_IS3L)  /* GPIO Input register3 High or Low */
  71
  72 #define GPIO0           0
  73 #define GPIO1           1
  74
  75 #define GPIO_MAX        32
  76 #define GPIO_ALT1_SEL   0x40000000
  77 #define GPIO_ALT2_SEL   0x80000000
  78 #define GPIO_ALT3_SEL   0xc0000000
  79 #define GPIO_IN_SEL     0x40000000
  80 #define GPIO_MASK       0xc0000000
  81
  82 #define GPIO_VAL(gpio)  (0x80000000 >> (gpio))
  83
  84 #ifndef __ASSEMBLY__
  85 typedef enum gpio_select { GPIO_SEL, GPIO_ALT1, GPIO_ALT2, GPIO_ALT3 } gpio_select_t;
  86 typedef enum gpio_driver { GPIO_DIS, GPIO_IN, GPIO_OUT, GPIO_BI } gpio_driver_t;
  87 typedef enum gpio_out    { GPIO_OUT_0, GPIO_OUT_1, GPIO_OUT_NO_CHG } gpio_out_t;
  88
  89 typedef struct {
  90         unsigned long   add;    /* gpio core base address       */
  91         gpio_driver_t   in_out; /* Driver Setting               */
  92         gpio_select_t   alt_nb; /* Selected Alternate           */
  93         gpio_out_t      out_val;/* Default Output Value         */
  94 } gpio_param_s;
  95 #endif
  96
  97 void gpio_config(int pin, int in_out, int gpio_alt, int out_val);
  98 void gpio_write_bit(int pin, int val);
  99 int gpio_read_out_bit(int pin);
 100 int gpio_read_in_bit(int pin);
 101 void gpio_set_chip_configuration(void);
 102
 103 #endif /* __ASM_PPC_GPIO_H */