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drm/i915: Use mul_u32_u32() more
We have a lot of '(u64)foo * bar' everywhere. Replace with mul_u32_u32() to avoid gcc failing to use a regular 32x32->64 multiply for this. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190408152702.4153-1-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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d492a29d8c
4 changed files with 11 additions and 11 deletions
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@ -71,7 +71,7 @@ static inline u32 mul_round_up_u32_fixed16(u32 val, uint_fixed_16_16_t mul)
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{
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u64 tmp;
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tmp = (u64)val * mul.val;
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tmp = mul_u32_u32(val, mul.val);
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tmp = DIV_ROUND_UP_ULL(tmp, 1 << 16);
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WARN_ON(tmp > U32_MAX);
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@ -83,7 +83,7 @@ static inline uint_fixed_16_16_t mul_fixed16(uint_fixed_16_16_t val,
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{
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u64 tmp;
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tmp = (u64)val.val * mul.val;
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tmp = mul_u32_u32(val.val, mul.val);
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tmp = tmp >> 16;
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return clamp_u64_to_fixed16(tmp);
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@ -114,7 +114,7 @@ static inline uint_fixed_16_16_t mul_u32_fixed16(u32 val, uint_fixed_16_16_t mul
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{
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u64 tmp;
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tmp = (u64)val * mul.val;
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tmp = mul_u32_u32(val, mul.val);
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return clamp_u64_to_fixed16(tmp);
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}
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@ -575,7 +575,7 @@ int chv_calc_dpll_params(int refclk, struct dpll *clock)
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clock->p = clock->p1 * clock->p2;
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if (WARN_ON(clock->n == 0 || clock->p == 0))
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return 0;
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clock->vco = DIV_ROUND_CLOSEST_ULL((u64)refclk * clock->m,
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clock->vco = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, clock->m),
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clock->n << 22);
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clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
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@ -960,8 +960,8 @@ chv_find_best_dpll(const struct intel_limit *limit,
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clock.p = clock.p1 * clock.p2;
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m2 = DIV_ROUND_CLOSEST_ULL(((u64)target * clock.p *
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clock.n) << 22, refclk * clock.m1);
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m2 = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(target, clock.p * clock.n) << 22,
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refclk * clock.m1);
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if (m2 > INT_MAX/clock.m1)
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continue;
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@ -6946,7 +6946,7 @@ static u32 ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config)
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if (WARN_ON(!pfit_w || !pfit_h))
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return pixel_rate;
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pixel_rate = div_u64((u64)pixel_rate * pipe_w * pipe_h,
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pixel_rate = div_u64(mul_u32_u32(pixel_rate, pipe_w * pipe_h),
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pfit_w * pfit_h);
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}
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@ -7066,7 +7066,7 @@ static void compute_m_n(unsigned int m, unsigned int n,
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else
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*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
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*ret_m = div_u64((u64)m * *ret_n, n);
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*ret_m = div_u64(mul_u32_u32(m, *ret_n), n);
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intel_reduce_m_n_ratio(ret_m, ret_n);
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}
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@ -2743,11 +2743,11 @@ static bool icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state)
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}
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if (use_ssc) {
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tmp = (u64)dco_khz * 47 * 32;
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tmp = mul_u32_u32(dco_khz, 47 * 32);
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do_div(tmp, refclk_khz * m1div * 10000);
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ssc_stepsize = tmp;
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tmp = (u64)dco_khz * 1000;
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tmp = mul_u32_u32(dco_khz, 1000);
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ssc_steplen = DIV_ROUND_UP_ULL(tmp, 32 * 2 * 32);
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} else {
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ssc_stepsize = 0;
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@ -678,7 +678,7 @@ static unsigned int intel_wm_method1(unsigned int pixel_rate,
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{
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u64 ret;
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ret = (u64)pixel_rate * cpp * latency;
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ret = mul_u32_u32(pixel_rate, cpp * latency);
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ret = DIV_ROUND_UP_ULL(ret, 10000);
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return ret;
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