Our uint_fixed_16_16_t type definition and related helper functions deserve dedicated header. While here cleanup indent.
v2: avoid too generic filename (Chris) Signed-off-by: Michal Wajdeczko <[email protected]> Cc: Chris Wilson <[email protected]> Cc: Rodrigo Vivi <[email protected]> Cc: Joonas Lahtinen <[email protected]> Acked-by: Rodrigo Vivi <[email protected]> --- drivers/gpu/drm/i915/fixed16_16.h | 169 ++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_drv.h | 139 +------------------------------ 2 files changed, 170 insertions(+), 138 deletions(-) create mode 100644 drivers/gpu/drm/i915/fixed16_16.h diff --git a/drivers/gpu/drm/i915/fixed16_16.h b/drivers/gpu/drm/i915/fixed16_16.h new file mode 100644 index 0000000..a6568df --- /dev/null +++ b/drivers/gpu/drm/i915/fixed16_16.h @@ -0,0 +1,169 @@ +/* + * Copyright © 2014-2017 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#ifndef __I915_FIXED16_16_H +#define __I915_FIXED16_16_H + +#include <linux/kernel.h> + +typedef struct { + uint32_t val; +} uint_fixed_16_16_t; + +#define FP_16_16_MAX ({ \ + uint_fixed_16_16_t fp; \ + fp.val = UINT_MAX; \ + fp; \ +}) + +static inline bool is_fixed16_zero(uint_fixed_16_16_t val) +{ + if (val.val == 0) + return true; + return false; +} + +static inline uint_fixed_16_16_t u32_to_fixed16(uint32_t val) +{ + uint_fixed_16_16_t fp; + + WARN_ON(val > U16_MAX); + + fp.val = val << 16; + return fp; +} + +static inline uint32_t fixed16_to_u32_round_up(uint_fixed_16_16_t fp) +{ + return DIV_ROUND_UP(fp.val, 1 << 16); +} + +static inline uint32_t fixed16_to_u32(uint_fixed_16_16_t fp) +{ + return fp.val >> 16; +} + +static inline uint_fixed_16_16_t min_fixed16(uint_fixed_16_16_t min1, + uint_fixed_16_16_t min2) +{ + uint_fixed_16_16_t min; + + min.val = min(min1.val, min2.val); + return min; +} + +static inline uint_fixed_16_16_t max_fixed16(uint_fixed_16_16_t max1, + uint_fixed_16_16_t max2) +{ + uint_fixed_16_16_t max; + + max.val = max(max1.val, max2.val); + return max; +} + +static inline uint_fixed_16_16_t clamp_u64_to_fixed16(uint64_t val) +{ + uint_fixed_16_16_t fp; + + WARN_ON(val > U32_MAX); + fp.val = (uint32_t) val; + return fp; +} + +static inline uint32_t div_round_up_fixed16(uint_fixed_16_16_t val, + uint_fixed_16_16_t d) +{ + return DIV_ROUND_UP(val.val, d.val); +} + +static inline uint32_t mul_round_up_u32_fixed16(uint32_t val, + uint_fixed_16_16_t mul) +{ + uint64_t intermediate_val; + + intermediate_val = (uint64_t) val * mul.val; + intermediate_val = DIV_ROUND_UP_ULL(intermediate_val, 1 << 16); + WARN_ON(intermediate_val > U32_MAX); + return (uint32_t) intermediate_val; +} + +static inline uint_fixed_16_16_t mul_fixed16(uint_fixed_16_16_t val, + uint_fixed_16_16_t mul) +{ + uint64_t intermediate_val; + + intermediate_val = (uint64_t) val.val * mul.val; + intermediate_val = intermediate_val >> 16; + return clamp_u64_to_fixed16(intermediate_val); +} + +static inline uint_fixed_16_16_t div_fixed16(uint32_t val, uint32_t d) +{ + uint64_t interm_val; + + interm_val = (uint64_t)val << 16; + interm_val = DIV_ROUND_UP_ULL(interm_val, d); + return clamp_u64_to_fixed16(interm_val); +} + +static inline uint32_t div_round_up_u32_fixed16(uint32_t val, + uint_fixed_16_16_t d) +{ + uint64_t interm_val; + + interm_val = (uint64_t)val << 16; + interm_val = DIV_ROUND_UP_ULL(interm_val, d.val); + WARN_ON(interm_val > U32_MAX); + return (uint32_t) interm_val; +} + +static inline uint_fixed_16_16_t mul_u32_fixed16(uint32_t val, + uint_fixed_16_16_t mul) +{ + uint64_t intermediate_val; + + intermediate_val = (uint64_t) val * mul.val; + return clamp_u64_to_fixed16(intermediate_val); +} + +static inline uint_fixed_16_16_t add_fixed16(uint_fixed_16_16_t add1, + uint_fixed_16_16_t add2) +{ + uint64_t interm_sum; + + interm_sum = (uint64_t) add1.val + add2.val; + return clamp_u64_to_fixed16(interm_sum); +} + +static inline uint_fixed_16_16_t add_fixed16_u32(uint_fixed_16_16_t add1, + uint32_t add2) +{ + uint64_t interm_sum; + uint_fixed_16_16_t interm_add2 = u32_to_fixed16(add2); + + interm_sum = (uint64_t) add1.val + interm_add2.val; + return clamp_u64_to_fixed16(interm_sum); +} + +#endif diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4b943cd..0a7d094 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -52,6 +52,7 @@ #include <drm/drm_auth.h> #include <drm/drm_cache.h> +#include "fixed16_16.h" #include "i915_params.h" #include "i915_reg.h" #include "i915_utils.h" @@ -108,144 +109,6 @@ #define i915_inject_load_failure() \ __i915_inject_load_failure(__func__, __LINE__) -typedef struct { - uint32_t val; -} uint_fixed_16_16_t; - -#define FP_16_16_MAX ({ \ - uint_fixed_16_16_t fp; \ - fp.val = UINT_MAX; \ - fp; \ -}) - -static inline bool is_fixed16_zero(uint_fixed_16_16_t val) -{ - if (val.val == 0) - return true; - return false; -} - -static inline uint_fixed_16_16_t u32_to_fixed16(uint32_t val) -{ - uint_fixed_16_16_t fp; - - WARN_ON(val > U16_MAX); - - fp.val = val << 16; - return fp; -} - -static inline uint32_t fixed16_to_u32_round_up(uint_fixed_16_16_t fp) -{ - return DIV_ROUND_UP(fp.val, 1 << 16); -} - -static inline uint32_t fixed16_to_u32(uint_fixed_16_16_t fp) -{ - return fp.val >> 16; -} - -static inline uint_fixed_16_16_t min_fixed16(uint_fixed_16_16_t min1, - uint_fixed_16_16_t min2) -{ - uint_fixed_16_16_t min; - - min.val = min(min1.val, min2.val); - return min; -} - -static inline uint_fixed_16_16_t max_fixed16(uint_fixed_16_16_t max1, - uint_fixed_16_16_t max2) -{ - uint_fixed_16_16_t max; - - max.val = max(max1.val, max2.val); - return max; -} - -static inline uint_fixed_16_16_t clamp_u64_to_fixed16(uint64_t val) -{ - uint_fixed_16_16_t fp; - WARN_ON(val > U32_MAX); - fp.val = (uint32_t) val; - return fp; -} - -static inline uint32_t div_round_up_fixed16(uint_fixed_16_16_t val, - uint_fixed_16_16_t d) -{ - return DIV_ROUND_UP(val.val, d.val); -} - -static inline uint32_t mul_round_up_u32_fixed16(uint32_t val, - uint_fixed_16_16_t mul) -{ - uint64_t intermediate_val; - - intermediate_val = (uint64_t) val * mul.val; - intermediate_val = DIV_ROUND_UP_ULL(intermediate_val, 1 << 16); - WARN_ON(intermediate_val > U32_MAX); - return (uint32_t) intermediate_val; -} - -static inline uint_fixed_16_16_t mul_fixed16(uint_fixed_16_16_t val, - uint_fixed_16_16_t mul) -{ - uint64_t intermediate_val; - - intermediate_val = (uint64_t) val.val * mul.val; - intermediate_val = intermediate_val >> 16; - return clamp_u64_to_fixed16(intermediate_val); -} - -static inline uint_fixed_16_16_t div_fixed16(uint32_t val, uint32_t d) -{ - uint64_t interm_val; - - interm_val = (uint64_t)val << 16; - interm_val = DIV_ROUND_UP_ULL(interm_val, d); - return clamp_u64_to_fixed16(interm_val); -} - -static inline uint32_t div_round_up_u32_fixed16(uint32_t val, - uint_fixed_16_16_t d) -{ - uint64_t interm_val; - - interm_val = (uint64_t)val << 16; - interm_val = DIV_ROUND_UP_ULL(interm_val, d.val); - WARN_ON(interm_val > U32_MAX); - return (uint32_t) interm_val; -} - -static inline uint_fixed_16_16_t mul_u32_fixed16(uint32_t val, - uint_fixed_16_16_t mul) -{ - uint64_t intermediate_val; - - intermediate_val = (uint64_t) val * mul.val; - return clamp_u64_to_fixed16(intermediate_val); -} - -static inline uint_fixed_16_16_t add_fixed16(uint_fixed_16_16_t add1, - uint_fixed_16_16_t add2) -{ - uint64_t interm_sum; - - interm_sum = (uint64_t) add1.val + add2.val; - return clamp_u64_to_fixed16(interm_sum); -} - -static inline uint_fixed_16_16_t add_fixed16_u32(uint_fixed_16_16_t add1, - uint32_t add2) -{ - uint64_t interm_sum; - uint_fixed_16_16_t interm_add2 = u32_to_fixed16(add2); - - interm_sum = (uint64_t) add1.val + interm_add2.val; - return clamp_u64_to_fixed16(interm_sum); -} - enum hpd_pin { HPD_NONE = 0, HPD_TV = HPD_NONE, /* TV is known to be unreliable */ -- 1.9.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
