drm/i915/i915_reg_defs.h

1 /* SPDX-License-Identifier: MIT */
13  * REG_BIT() - Prepare a u32 bit value
14  * @__n: 0-based bit number
26  * REG_BIT8() - Prepare a u8 bit value
27  * @__n: 0-based bit number
39  * REG_GENMASK() - Prepare a continuous u32 bitmask
40  * @__high: 0-based high bit
41  * @__low: 0-based low bit
54  * REG_GENMASK64() - Prepare a continuous u64 bitmask
55  * @__high: 0-based high bit
56  * @__low: 0-based low bit
69  * REG_GENMASK8() - Prepare a continuous u8 bitmask
70  * @__high: 0-based high bit
71  * @__low: 0-based low bit
86 #define IS_POWER_OF_2(__x)		((__x) && (((__x) & ((__x) - 1)) == 0))
89  * REG_FIELD_PREP() - Prepare a u32 bitfield value
102 	       BUILD_BUG_ON_ZERO(!IS_POWER_OF_2((__mask) + (1ULL << __bf_shf(__mask)))) + \
106  * REG_FIELD_PREP8() - Prepare a u8 bitfield value
119 	       BUILD_BUG_ON_ZERO(!IS_POWER_OF_2((__mask) + (1ULL << __bf_shf(__mask)))) + \
123  * REG_FIELD_GET() - Extract a u32 bitfield value
135  * REG_FIELD_GET64() - Extract a u64 bitfield value
147  * REG_BIT16() - Prepare a u16 bit value
148  * @__n: 0-based bit number
161  * REG_GENMASK16() - Prepare a continuous u8 bitmask
162  * @__high: 0-based high bit
163  * @__low: 0-based low bit
177  * REG_FIELD_PREP16() - Prepare a u16 bitfield value
191 	       BUILD_BUG_ON_ZERO(!IS_POWER_OF_2((__mask) + (1ULL << __bf_shf(__mask)))) + \
209  * numbers, pick the 0-based __index'th value.
213 #define _PICK_EVEN(__index, __a, __b) ((__a) + (__index) * ((__b) - (__a)))
232  *	1: 0xf004,
242 				   _PICK_EVEN((__index) - (__c_index), __c, __d)))
245  * Given the arbitrary numbers in varargs, pick the 0-based __index'th number.
252  * REG_FIELD_GET8() - Extract a u8 bitfield value
280  * non-MCR nature of the register.