blob: 1765f47664ca1821a451dc6268fa1eb9177089f6
| 1 | #ifndef __AML_GPIO__ |
| 2 | #define __AML_GPIO__ |
| 3 | #include <asm/io.h> |
| 4 | /** |
| 5 | * struct meson_reg_desc - a register descriptor |
| 6 | * |
| 7 | * @reg: register offset in the regmap |
| 8 | * @bit: bit index in register |
| 9 | * |
| 10 | * The structure describes the information needed to control pull, |
| 11 | * pull-enable, direction, etc. for a single pin |
| 12 | */ |
| 13 | struct meson_reg_desc { |
| 14 | unsigned int reg; |
| 15 | unsigned int bit; |
| 16 | }; |
| 17 | |
| 18 | /** |
| 19 | * enum meson_reg_type - type of registers encoded in @meson_reg_desc |
| 20 | */ |
| 21 | enum meson_reg_type { |
| 22 | REG_PULLEN, |
| 23 | REG_PULL, |
| 24 | REG_DIR, |
| 25 | REG_OUT, |
| 26 | REG_IN, |
| 27 | NUM_REG, |
| 28 | }; |
| 29 | |
| 30 | |
| 31 | |
| 32 | |
| 33 | struct meson_bank { |
| 34 | const char *name; |
| 35 | unsigned int first; |
| 36 | unsigned int last; |
| 37 | struct meson_reg_desc regs[NUM_REG]; |
| 38 | }; |
| 39 | #define GPIO_REG_BIT(reg, bit) ((reg<<5)|bit) |
| 40 | #define GPIO_REG(value) ((value>>5)) |
| 41 | #define GPIO_BIT(value) ((value&0x1F)) |
| 42 | #define BIT(bit) (1<<bit) |
| 43 | static inline void regmap_update_bits(unsigned long reg,unsigned mask,unsigned val) |
| 44 | { |
| 45 | |
| 46 | unsigned int tmp, orig; |
| 47 | orig = readl(reg); |
| 48 | tmp = orig & ~mask; |
| 49 | tmp |= val & mask; |
| 50 | writel(tmp,reg); |
| 51 | return; |
| 52 | } |
| 53 | |
| 54 | #endif |
| 55 |