[Intel-gfx] [PATCH v2 1/5] drm/i915: extract fixed point math to i915_fixed.h
Jani Nikula
jani.nikula at intel.com
Tue Nov 20 11:11:01 UTC 2018
On Fri, 16 Nov 2018, Jani Nikula <jani.nikula at intel.com> wrote:
> Reduce bloat in one of the bigger header files. Fix some indentation
> while at it. No functional changes.
>
> v2: Add include guards (Joonas)
>
> Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
Pushed the series, thanks for the review.
BR,
Jani.
> ---
> drivers/gpu/drm/i915/i915_drv.h | 139 +----------------------------------
> drivers/gpu/drm/i915/i915_fixed.h | 147 ++++++++++++++++++++++++++++++++++++++
> 2 files changed, 148 insertions(+), 138 deletions(-)
> create mode 100644 drivers/gpu/drm/i915/i915_fixed.h
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index d69b71d368d3..9c2597a2784c 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -54,6 +54,7 @@
> #include <drm/drm_cache.h>
> #include <drm/drm_util.h>
>
> +#include "i915_fixed.h"
> #include "i915_params.h"
> #include "i915_reg.h"
> #include "i915_utils.h"
> @@ -127,144 +128,6 @@ bool i915_error_injected(void);
> __i915_printk(i915, i915_error_injected() ? KERN_DEBUG : KERN_ERR, \
> fmt, ##__VA_ARGS__)
>
> -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 */
> diff --git a/drivers/gpu/drm/i915/i915_fixed.h b/drivers/gpu/drm/i915/i915_fixed.h
> new file mode 100644
> index 000000000000..c974e51c6d8b
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/i915_fixed.h
> @@ -0,0 +1,147 @@
> +/* SPDX-License-Identifier: MIT */
> +/*
> + * Copyright © 2018 Intel Corporation
> + */
> +
> +#ifndef _I915_FIXED_H_
> +#define _I915_FIXED_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 /* _I915_FIXED_H_ */
--
Jani Nikula, Intel Open Source Graphics Center
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