[PATCH 3/9] drm/i915: cleanup fixed-point wrappers naming

Mahesh Kumar
2017-06-13T13:08:19Z

This patch make naming of fixed-point wrappers consistent
operation_<any_post_operation>_<1st operand>_<2nd operand>
also shorten the name for fixed_16_16 to fixed16

s/u32_to_fixed_16_16/u32_to_fixed16
s/fixed_16_16_to_u32/fixed16_to_u32
s/fixed_16_16_to_u32_round_up/fixed16_to_u32_round_up
s/min_fixed_16_16/min_fixed16
s/max_fixed_16_16/max_fixed16
s/mul_u32_fixed_16_16/mul_u32_fixed16
s/fixed_16_16_div/div_fixed16

Changes Since V1:
- Split the patch in more logical patches (Maarten)

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 14 +++++-----
drivers/gpu/drm/i915/intel_pm.c | 59 ++++++++++++++++++++---------------------
2 files changed, 36 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 21e77b0e5ea2..d0698c290cba 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -122,7 +122,7 @@ static inline bool is_fixed16_zero(uint_fixed_16_16_t val)
return false;
}

-static inline uint_fixed_16_16_t u32_to_fixed_16_16(uint32_t val)
+static inline uint_fixed_16_16_t u32_to_fixed16(uint32_t val)
{
uint_fixed_16_16_t fp;

@@ -132,17 +132,17 @@ static inline uint_fixed_16_16_t u32_to_fixed_16_16(uint32_t val)
return fp;
}

-static inline uint32_t fixed_16_16_to_u32_round_up(uint_fixed_16_16_t 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 fixed_16_16_to_u32(uint_fixed_16_16_t fp)
+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_fixed_16_16(uint_fixed_16_16_t min1,
+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;
@@ -151,7 +151,7 @@ static inline uint_fixed_16_16_t min_fixed_16_16(uint_fixed_16_16_t min1,
return min;
}

-static inline uint_fixed_16_16_t max_fixed_16_16(uint_fixed_16_16_t max1,
+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;
@@ -195,7 +195,7 @@ static inline uint_fixed_16_16_t mul_fixed16(uint_fixed_16_16_t val,
return clamp_u64_to_fixed16(intermediate_val);
}

-static inline uint_fixed_16_16_t fixed_16_16_div(uint32_t val, uint32_t d)
+static inline uint_fixed_16_16_t div_fixed16(uint32_t val, uint32_t d)
{
uint64_t interm_val;

@@ -215,7 +215,7 @@ static inline uint32_t div_round_up_u32_fixed16(uint32_t val,
return clamp_t(uint32_t, interm_val, 0, ~0);
}

-static inline uint_fixed_16_16_t mul_u32_fixed_16_16(uint32_t val,
+static inline uint_fixed_16_16_t mul_u32_fixed16(uint32_t val,
uint_fixed_16_16_t mul)
{
uint64_t intermediate_val;
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0483e9110cf6..155f54a1f516 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3837,7 +3837,7 @@ skl_plane_downscale_amount(const struct intel_crtc_state *cstate,
uint_fixed_16_16_t downscale_h, downscale_w;

if (WARN_ON(!intel_wm_plane_visible(cstate, pstate)))
- return u32_to_fixed_16_16(0);
+ return u32_to_fixed16(0);

/* n.b., src is 16.16 fixed point, dst is whole integer */
if (plane->id == PLANE_CURSOR) {
@@ -3861,10 +3861,10 @@ skl_plane_downscale_amount(const struct intel_crtc_state *cstate,
dst_h = drm_rect_height(&pstate->base.dst);
}

- fp_w_ratio = fixed_16_16_div(src_w, dst_w);
- fp_h_ratio = fixed_16_16_div(src_h, dst_h);
- downscale_w = max_fixed_16_16(fp_w_ratio, u32_to_fixed_16_16(1));
- downscale_h = max_fixed_16_16(fp_h_ratio, u32_to_fixed_16_16(1));
+ fp_w_ratio = div_fixed16(src_w, dst_w);
+ fp_h_ratio = div_fixed16(src_h, dst_h);
+ downscale_w = max_fixed16(fp_w_ratio, u32_to_fixed16(1));
+ downscale_h = max_fixed16(fp_h_ratio, u32_to_fixed16(1));

return mul_fixed16(downscale_w, downscale_h);
}
@@ -3872,7 +3872,7 @@ skl_plane_downscale_amount(const struct intel_crtc_state *cstate,
static uint_fixed_16_16_t
skl_pipe_downscale_amount(const struct intel_crtc_state *crtc_state)
{
- uint_fixed_16_16_t pipe_downscale = u32_to_fixed_16_16(1);
+ uint_fixed_16_16_t pipe_downscale = u32_to_fixed16(1);

if (!crtc_state->base.enable)
return pipe_downscale;
@@ -3891,10 +3891,10 @@ skl_pipe_downscale_amount(const struct intel_crtc_state *crtc_state)
if (!dst_w || !dst_h)
return pipe_downscale;

- fp_w_ratio = fixed_16_16_div(src_w, dst_w);
- fp_h_ratio = fixed_16_16_div(src_h, dst_h);
- downscale_w = max_fixed_16_16(fp_w_ratio, u32_to_fixed_16_16(1));
- downscale_h = max_fixed_16_16(fp_h_ratio, u32_to_fixed_16_16(1));
+ fp_w_ratio = div_fixed16(src_w, dst_w);
+ fp_h_ratio = div_fixed16(src_h, dst_h);
+ downscale_w = max_fixed16(fp_w_ratio, u32_to_fixed16(1));
+ downscale_h = max_fixed16(fp_h_ratio, u32_to_fixed16(1));

pipe_downscale = mul_fixed16(downscale_w, downscale_h);
}
@@ -3913,14 +3913,14 @@ int skl_check_pipe_max_pixel_rate(struct intel_crtc *intel_crtc,
int crtc_clock, dotclk;
uint32_t pipe_max_pixel_rate;
uint_fixed_16_16_t pipe_downscale;
- uint_fixed_16_16_t max_downscale = u32_to_fixed_16_16(1);
+ uint_fixed_16_16_t max_downscale = u32_to_fixed16(1);

if (!cstate->base.enable)
return 0;

drm_atomic_crtc_state_for_each_plane_state(plane, pstate, crtc_state) {
uint_fixed_16_16_t plane_downscale;
- uint_fixed_16_16_t fp_9_div_8 = fixed_16_16_div(9, 8);
+ uint_fixed_16_16_t fp_9_div_8 = div_fixed16(9, 8);
int bpp;

if (!intel_wm_plane_visible(cstate,
@@ -3938,7 +3938,7 @@ int skl_check_pipe_max_pixel_rate(struct intel_crtc *intel_crtc,
plane_downscale = mul_fixed16(plane_downscale,
fp_9_div_8);

- max_downscale = max_fixed_16_16(plane_downscale, max_downscale);
+ max_downscale = max_fixed16(plane_downscale, max_downscale);
}
pipe_downscale = skl_pipe_downscale_amount(cstate);

@@ -4359,7 +4359,7 @@ static uint_fixed_16_16_t skl_wm_method1(uint32_t pixel_rate, uint8_t cpp,
return FP_16_16_MAX;

wm_intermediate_val = latency * pixel_rate * cpp;
- ret = fixed_16_16_div(wm_intermediate_val, 1000 * 512);
+ ret = div_fixed16(wm_intermediate_val, 1000 * 512);
return ret;
}

@@ -4377,7 +4377,7 @@ static uint_fixed_16_16_t skl_wm_method2(uint32_t pixel_rate,
wm_intermediate_val = latency * pixel_rate;
wm_intermediate_val = DIV_ROUND_UP(wm_intermediate_val,
pipe_htotal * 1000);
- ret = mul_u32_fixed_16_16(wm_intermediate_val, plane_blocks_per_line);
+ ret = mul_u32_fixed16(wm_intermediate_val, plane_blocks_per_line);
return ret;
}

@@ -4389,15 +4389,15 @@ intel_get_linetime_us(struct intel_crtc_state *cstate)
uint_fixed_16_16_t linetime_us;

if (!cstate->base.active)
- return u32_to_fixed_16_16(0);
+ return u32_to_fixed16(0);

pixel_rate = cstate->pixel_rate;

if (WARN_ON(pixel_rate == 0))
- return u32_to_fixed_16_16(0);
+ return u32_to_fixed16(0);

crtc_htotal = cstate->base.adjusted_mode.crtc_htotal;
- linetime_us = fixed_16_16_div(crtc_htotal * 1000, pixel_rate);
+ linetime_us = div_fixed16(crtc_htotal * 1000, pixel_rate);

return linetime_us;
}
@@ -4513,14 +4513,14 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
if (y_tiled) {
interm_pbpl = DIV_ROUND_UP(plane_bytes_per_line *
y_min_scanlines, 512);
- plane_blocks_per_line = fixed_16_16_div(interm_pbpl,
+ plane_blocks_per_line = div_fixed16(interm_pbpl,
y_min_scanlines);
} else if (x_tiled) {
interm_pbpl = DIV_ROUND_UP(plane_bytes_per_line, 512);
- plane_blocks_per_line = u32_to_fixed_16_16(interm_pbpl);
+ plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
} else {
interm_pbpl = DIV_ROUND_UP(plane_bytes_per_line, 512) + 1;
- plane_blocks_per_line = u32_to_fixed_16_16(interm_pbpl);
+ plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
}

method1 = skl_wm_method1(plane_pixel_rate, cpp, latency);
@@ -4529,32 +4529,32 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
latency,
plane_blocks_per_line);

- y_tile_minimum = mul_u32_fixed_16_16(y_min_scanlines,
- plane_blocks_per_line);
+ y_tile_minimum = mul_u32_fixed16(y_min_scanlines,
+ plane_blocks_per_line);

if (y_tiled) {
- selected_result = max_fixed_16_16(method2, y_tile_minimum);
+ selected_result = max_fixed16(method2, y_tile_minimum);
} else {
uint32_t linetime_us;

- linetime_us = fixed_16_16_to_u32_round_up(
+ linetime_us = fixed16_to_u32_round_up(
intel_get_linetime_us(cstate));
if ((cpp * cstate->base.adjusted_mode.crtc_htotal / 512 < 1) &&
(plane_bytes_per_line / 512 < 1))
selected_result = method2;
else if (latency >= linetime_us)
- selected_result = min_fixed_16_16(method1, method2);
+ selected_result = min_fixed16(method1, method2);
else
selected_result = method1;
}

- res_blocks = fixed_16_16_to_u32_round_up(selected_result) + 1;
+ res_blocks = fixed16_to_u32_round_up(selected_result) + 1;
res_lines = div_round_up_fixed16(selected_result,
plane_blocks_per_line);

if (level >= 1 && level <= 7) {
if (y_tiled) {
- res_blocks += fixed_16_16_to_u32_round_up(y_tile_minimum);
+ res_blocks += fixed16_to_u32_round_up(y_tile_minimum);
res_lines += y_min_scanlines;
} else {
res_blocks++;
@@ -4617,8 +4617,7 @@ skl_compute_linetime_wm(struct intel_crtc_state *cstate)
if (is_fixed16_zero(linetime_us))
return 0;

- linetime_wm = fixed_16_16_to_u32_round_up(mul_u32_fixed_16_16(8,
- linetime_us));
+ linetime_wm = fixed16_to_u32_round_up(mul_u32_fixed16(8, linetime_us));

/* Display WA #1135: bxt. */
if (IS_BROXTON(dev_priv) && dev_priv->ipc_enabled)