[PATCH 05/18] drm/i915: Standardize on 'cpp' for bytes per pixel

ville.syrjala
2016-01-20T19:05:57Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

We more or less randomly call the "bytes per pixel" value
'cpp', 'bytes_per_pixel', 'pixel_size', or even 'bpp'. Let's just pick
one and stick to it. I've chosen 'cpp'.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 22 +++---
drivers/gpu/drm/i915/intel_pm.c | 128 +++++++++++++++++------------------
drivers/gpu/drm/i915/intel_sprite.c | 34 ++++------
3 files changed, 87 insertions(+), 97 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0f5df7a66cc4..f94ddad704b2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2709,7 +2709,7 @@ static void i9xx_update_primary_plane(struct drm_plane *primary,
u32 linear_offset;
u32 dspcntr;
i915_reg_t reg = DSPCNTR(plane);
- int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
int x = plane_state->src.x1 >> 16;
int y = plane_state->src.y1 >> 16;

@@ -2769,13 +2769,12 @@ static void i9xx_update_primary_plane(struct drm_plane *primary,
if (IS_G4X(dev))
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;

- linear_offset = y * fb->pitches[0] + x * pixel_size;
+ linear_offset = y * fb->pitches[0] + x * cpp;

if (INTEL_INFO(dev)->gen >= 4) {
intel_crtc->dspaddr_offset =
intel_compute_tile_offset(dev_priv, &x, &y,
- fb->modifier[0],
- pixel_size,
+ fb->modifier[0], cpp,
fb->pitches[0]);
linear_offset -= intel_crtc->dspaddr_offset;
} else {
@@ -2792,7 +2791,7 @@ static void i9xx_update_primary_plane(struct drm_plane *primary,
data and adding to linear_offset*/
linear_offset +=
(crtc_state->pipe_src_h - 1) * fb->pitches[0] +
- (crtc_state->pipe_src_w - 1) * pixel_size;
+ (crtc_state->pipe_src_w - 1) * cpp;
}

intel_crtc->adjusted_x = x;
@@ -2840,7 +2839,7 @@ static void ironlake_update_primary_plane(struct drm_plane *primary,
u32 linear_offset;
u32 dspcntr;
i915_reg_t reg = DSPCNTR(plane);
- int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
int x = plane_state->src.x1 >> 16;
int y = plane_state->src.y1 >> 16;

@@ -2879,11 +2878,10 @@ static void ironlake_update_primary_plane(struct drm_plane *primary,
if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;

- linear_offset = y * fb->pitches[0] + x * pixel_size;
+ linear_offset = y * fb->pitches[0] + x * cpp;
intel_crtc->dspaddr_offset =
intel_compute_tile_offset(dev_priv, &x, &y,
- fb->modifier[0],
- pixel_size,
+ fb->modifier[0], cpp,
fb->pitches[0]);
linear_offset -= intel_crtc->dspaddr_offset;
if (plane_state->base.rotation == BIT(DRM_ROTATE_180)) {
@@ -2897,7 +2895,7 @@ static void ironlake_update_primary_plane(struct drm_plane *primary,
data and adding to linear_offset*/
linear_offset +=
(crtc_state->pipe_src_h - 1) * fb->pitches[0] +
- (crtc_state->pipe_src_w - 1) * pixel_size;
+ (crtc_state->pipe_src_w - 1) * cpp;
}
}

@@ -14680,10 +14678,12 @@ u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
u32 gen = INTEL_INFO(dev)->gen;

if (gen >= 9) {
+ int cpp = drm_format_plane_cpp(pixel_format, 0);
+
/* "The stride in bytes must not exceed the of the size of 8K
* pixels and 32K bytes."
*/
- return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
+ return min(8192 * cpp, 32768);
} else if (gen >= 5 && !IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
return 32*1024;
} else if (gen >= 4) {
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 20bf854eae8c..31bc4ea395ac 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -548,7 +548,7 @@ static const struct intel_watermark_params i845_wm_info = {
* intel_calculate_wm - calculate watermark level
* @clock_in_khz: pixel clock
* @wm: chip FIFO params
- * @pixel_size: display pixel size
+ * @cpp: bytes per pixel
* @latency_ns: memory latency for the platform
*
* Calculate the watermark level (the level at which the display plane will
@@ -564,8 +564,7 @@ static const struct intel_watermark_params i845_wm_info = {
*/
static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
const struct intel_watermark_params *wm,
- int fifo_size,
- int pixel_size,
+ int fifo_size, int cpp,
unsigned long latency_ns)
{
long entries_required, wm_size;
@@ -576,7 +575,7 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
* clocks go from a few thousand to several hundred thousand.
* latency is usually a few thousand
*/
- entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
+ entries_required = ((clock_in_khz / 1000) * cpp * latency_ns) /
1000;
entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);

@@ -640,13 +639,13 @@ static void pineview_update_wm(struct drm_crtc *unused_crtc)
crtc = single_enabled_crtc(dev);
if (crtc) {
const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode;
- int pixel_size = crtc->primary->state->fb->bits_per_pixel / 8;
+ int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0);
int clock = adjusted_mode->crtc_clock;

/* Display SR */
wm = intel_calculate_wm(clock, &pineview_display_wm,
pineview_display_wm.fifo_size,
- pixel_size, latency->display_sr);
+ cpp, latency->display_sr);
reg = I915_READ(DSPFW1);
reg &= ~DSPFW_SR_MASK;
reg |= FW_WM(wm, SR);
@@ -656,7 +655,7 @@ static void pineview_update_wm(struct drm_crtc *unused_crtc)
/* cursor SR */
wm = intel_calculate_wm(clock, &pineview_cursor_wm,
pineview_display_wm.fifo_size,
- pixel_size, latency->cursor_sr);
+ cpp, latency->cursor_sr);
reg = I915_READ(DSPFW3);
reg &= ~DSPFW_CURSOR_SR_MASK;
reg |= FW_WM(wm, CURSOR_SR);
@@ -665,7 +664,7 @@ static void pineview_update_wm(struct drm_crtc *unused_crtc)
/* Display HPLL off SR */
wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
pineview_display_hplloff_wm.fifo_size,
- pixel_size, latency->display_hpll_disable);
+ cpp, latency->display_hpll_disable);
reg = I915_READ(DSPFW3);
reg &= ~DSPFW_HPLL_SR_MASK;
reg |= FW_WM(wm, HPLL_SR);
@@ -674,7 +673,7 @@ static void pineview_update_wm(struct drm_crtc *unused_crtc)
/* cursor HPLL off SR */
wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
pineview_display_hplloff_wm.fifo_size,
- pixel_size, latency->cursor_hpll_disable);
+ cpp, latency->cursor_hpll_disable);
reg = I915_READ(DSPFW3);
reg &= ~DSPFW_HPLL_CURSOR_MASK;
reg |= FW_WM(wm, HPLL_CURSOR);
@@ -698,7 +697,7 @@ static bool g4x_compute_wm0(struct drm_device *dev,
{
struct drm_crtc *crtc;
const struct drm_display_mode *adjusted_mode;
- int htotal, hdisplay, clock, pixel_size;
+ int htotal, hdisplay, clock, cpp;
int line_time_us, line_count;
int entries, tlb_miss;

@@ -713,10 +712,10 @@ static bool g4x_compute_wm0(struct drm_device *dev,
clock = adjusted_mode->crtc_clock;
htotal = adjusted_mode->crtc_htotal;
hdisplay = to_intel_crtc(crtc)->config->pipe_src_w;
- pixel_size = crtc->primary->state->fb->bits_per_pixel / 8;
+ cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0);

/* Use the small buffer method to calculate plane watermark */
- entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
+ entries = ((clock * cpp / 1000) * display_latency_ns) / 1000;
tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
if (tlb_miss > 0)
entries += tlb_miss;
@@ -728,7 +727,7 @@ static bool g4x_compute_wm0(struct drm_device *dev,
/* Use the large buffer method to calculate cursor watermark */
line_time_us = max(htotal * 1000 / clock, 1);
line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
- entries = line_count * crtc->cursor->state->crtc_w * pixel_size;
+ entries = line_count * crtc->cursor->state->crtc_w * cpp;
tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
if (tlb_miss > 0)
entries += tlb_miss;
@@ -784,7 +783,7 @@ static bool g4x_compute_srwm(struct drm_device *dev,
{
struct drm_crtc *crtc;
const struct drm_display_mode *adjusted_mode;
- int hdisplay, htotal, pixel_size, clock;
+ int hdisplay, htotal, cpp, clock;
unsigned long line_time_us;
int line_count, line_size;
int small, large;
@@ -800,21 +799,21 @@ static bool g4x_compute_srwm(struct drm_device *dev,
clock = adjusted_mode->crtc_clock;
htotal = adjusted_mode->crtc_htotal;
hdisplay = to_intel_crtc(crtc)->config->pipe_src_w;
- pixel_size = crtc->primary->state->fb->bits_per_pixel / 8;
+ cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0);

line_time_us = max(htotal * 1000 / clock, 1);
line_count = (latency_ns / line_time_us + 1000) / 1000;
- line_size = hdisplay * pixel_size;
+ line_size = hdisplay * cpp;

/* Use the minimum of the small and large buffer method for primary */
- small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
+ small = ((clock * cpp / 1000) * latency_ns) / 1000;
large = line_count * line_size;

entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
*display_wm = entries + display->guard_size;

/* calculate the self-refresh watermark for display cursor */
- entries = line_count * pixel_size * crtc->cursor->state->crtc_w;
+ entries = line_count * cpp * crtc->cursor->state->crtc_w;
entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
*cursor_wm = entries + cursor->guard_size;

@@ -906,13 +905,13 @@ enum vlv_wm_level {
static unsigned int vlv_wm_method2(unsigned int pixel_rate,
unsigned int pipe_htotal,
unsigned int horiz_pixels,
- unsigned int bytes_per_pixel,
+ unsigned int cpp,
unsigned int latency)
{
unsigned int ret;

ret = (latency * pixel_rate) / (pipe_htotal * 10000);
- ret = (ret + 1) * horiz_pixels * bytes_per_pixel;
+ ret = (ret + 1) * horiz_pixels * cpp;
ret = DIV_ROUND_UP(ret, 64);

return ret;
@@ -941,7 +940,7 @@ static uint16_t vlv_compute_wm_level(struct intel_plane *plane,
int level)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
- int clock, htotal, pixel_size, width, wm;
+ int clock, htotal, cpp, width, wm;

if (dev_priv->wm.pri_latency[level] == 0)
return USHRT_MAX;
@@ -949,7 +948,7 @@ static uint16_t vlv_compute_wm_level(struct intel_plane *plane,
if (!state->visible)
return 0;

- pixel_size = drm_format_plane_cpp(state->base.fb->pixel_format, 0);
+ cpp = drm_format_plane_cpp(state->base.fb->pixel_format, 0);
clock = crtc->config->base.adjusted_mode.crtc_clock;
htotal = crtc->config->base.adjusted_mode.crtc_htotal;
width = crtc->config->pipe_src_w;
@@ -965,7 +964,7 @@ static uint16_t vlv_compute_wm_level(struct intel_plane *plane,
*/
wm = 63;
} else {
- wm = vlv_wm_method2(clock, htotal, width, pixel_size,
+ wm = vlv_wm_method2(clock, htotal, width, cpp,
dev_priv->wm.pri_latency[level] * 10);
}

@@ -1439,7 +1438,7 @@ static void i965_update_wm(struct drm_crtc *unused_crtc)
int clock = adjusted_mode->crtc_clock;
int htotal = adjusted_mode->crtc_htotal;
int hdisplay = to_intel_crtc(crtc)->config->pipe_src_w;
- int pixel_size = crtc->primary->state->fb->bits_per_pixel / 8;
+ int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0);
unsigned long line_time_us;
int entries;

@@ -1447,7 +1446,7 @@ static void i965_update_wm(struct drm_crtc *unused_crtc)

/* Use ns/us then divide to preserve precision */
entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
- pixel_size * hdisplay;
+ cpp * hdisplay;
entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
srwm = I965_FIFO_SIZE - entries;
if (srwm < 0)
@@ -1457,7 +1456,7 @@ static void i965_update_wm(struct drm_crtc *unused_crtc)
entries, srwm);

entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
- pixel_size * crtc->cursor->state->crtc_w;
+ cpp * crtc->cursor->state->crtc_w;
entries = DIV_ROUND_UP(entries,
i965_cursor_wm_info.cacheline_size);
cursor_sr = i965_cursor_wm_info.fifo_size -
@@ -1518,7 +1517,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)
crtc = intel_get_crtc_for_plane(dev, 0);
if (intel_crtc_active(crtc)) {
const struct drm_display_mode *adjusted_mode;
- int cpp = crtc->primary->state->fb->bits_per_pixel / 8;
+ int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0);
if (IS_GEN2(dev))
cpp = 4;

@@ -1540,7 +1539,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)
crtc = intel_get_crtc_for_plane(dev, 1);
if (intel_crtc_active(crtc)) {
const struct drm_display_mode *adjusted_mode;
- int cpp = crtc->primary->state->fb->bits_per_pixel / 8;
+ int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0);
if (IS_GEN2(dev))
cpp = 4;

@@ -1586,7 +1585,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)
int clock = adjusted_mode->crtc_clock;
int htotal = adjusted_mode->crtc_htotal;
int hdisplay = to_intel_crtc(enabled)->config->pipe_src_w;
- int pixel_size = enabled->primary->state->fb->bits_per_pixel / 8;
+ int cpp = drm_format_plane_cpp(enabled->primary->state->fb->pixel_format, 0);
unsigned long line_time_us;
int entries;

@@ -1594,7 +1593,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)

/* Use ns/us then divide to preserve precision */
entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
- pixel_size * hdisplay;
+ cpp * hdisplay;
entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
srwm = wm_info->fifo_size - entries;
@@ -1685,15 +1684,14 @@ uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config)
}

/* latency must be in 0.1us units. */
-static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel,
- uint32_t latency)
+static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency)
{
uint64_t ret;

if (WARN(latency == 0, "Latency value missing\n"))
return UINT_MAX;

- ret = (uint64_t) pixel_rate * bytes_per_pixel * latency;
+ ret = (uint64_t) pixel_rate * cpp * latency;
ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2;

return ret;
@@ -1701,7 +1699,7 @@ static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel,

/* latency must be in 0.1us units. */
static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal,
- uint32_t horiz_pixels, uint8_t bytes_per_pixel,
+ uint32_t horiz_pixels, uint8_t cpp,
uint32_t latency)
{
uint32_t ret;
@@ -1712,13 +1710,13 @@ static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal,
return UINT_MAX;

ret = (latency * pixel_rate) / (pipe_htotal * 10000);
- ret = (ret + 1) * horiz_pixels * bytes_per_pixel;
+ ret = (ret + 1) * horiz_pixels * cpp;
ret = DIV_ROUND_UP(ret, 64) + 2;
return ret;
}

static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels,
- uint8_t bytes_per_pixel)
+ uint8_t cpp)
{
/*
* Neither of these should be possible since this function shouldn't be
@@ -1726,12 +1724,12 @@ static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels,
* extra paranoid to avoid a potential divide-by-zero if we screw up
* elsewhere in the driver.
*/
- if (WARN_ON(!bytes_per_pixel))
+ if (WARN_ON(!cpp))
return 0;
if (WARN_ON(!horiz_pixels))
return 0;

- return DIV_ROUND_UP(pri_val * 64, horiz_pixels * bytes_per_pixel) + 2;
+ return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2;
}

struct ilk_wm_maximums {
@@ -1750,13 +1748,14 @@ static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate,
uint32_t mem_value,
bool is_lp)
{
- int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
+ int cpp = pstate->base.fb ?
+ drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0;
uint32_t method1, method2;

if (!cstate->base.active || !pstate->visible)
return 0;

- method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), bpp, mem_value);
+ method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value);

if (!is_lp)
return method1;
@@ -1764,8 +1763,7 @@ static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate,
method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
cstate->base.adjusted_mode.crtc_htotal,
drm_rect_width(&pstate->dst),
- bpp,
- mem_value);
+ cpp, mem_value);

return min(method1, method2);
}
@@ -1778,18 +1776,18 @@ static uint32_t ilk_compute_spr_wm(const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate,
uint32_t mem_value)
{
- int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
+ int cpp = pstate->base.fb ?
+ drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0;
uint32_t method1, method2;

if (!cstate->base.active || !pstate->visible)
return 0;

- method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), bpp, mem_value);
+ method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value);
method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
cstate->base.adjusted_mode.crtc_htotal,
drm_rect_width(&pstate->dst),
- bpp,
- mem_value);
+ cpp, mem_value);
return min(method1, method2);
}

@@ -1801,7 +1799,8 @@ static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate,
uint32_t mem_value)
{
- int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
+ int cpp = pstate->base.fb ?
+ drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0;

if (!cstate->base.active || !pstate->visible)
return 0;
@@ -1809,8 +1808,7 @@ static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate,
return ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
cstate->base.adjusted_mode.crtc_htotal,
drm_rect_width(&pstate->dst),
- bpp,
- mem_value);
+ cpp, mem_value);
}

/* Only for WM_LP. */
@@ -1818,12 +1816,13 @@ static uint32_t ilk_compute_fbc_wm(const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate,
uint32_t pri_val)
{
- int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
+ int cpp = pstate->base.fb ?
+ drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0;

if (!cstate->base.active || !pstate->visible)
return 0;

- return ilk_wm_fbc(pri_val, drm_rect_width(&pstate->dst), bpp);
+ return ilk_wm_fbc(pri_val, drm_rect_width(&pstate->dst), cpp);
}

static unsigned int ilk_display_fifo_size(const struct drm_device *dev)
@@ -3042,26 +3041,25 @@ static uint32_t skl_pipe_pixel_rate(const struct intel_crtc_state *config)

/*
* The max latency should be 257 (max the punit can code is 255 and we add 2us
- * for the read latency) and bytes_per_pixel should always be <= 8, so that
+ * for the read latency) and cpp should always be <= 8, so that
* should allow pixel_rate up to ~2 GHz which seems sufficient since max
* 2xcdclk is 1350 MHz and the pixel rate should never exceed that.
*/
-static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel,
- uint32_t latency)
+static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency)
{
uint32_t wm_intermediate_val, ret;

if (latency == 0)
return UINT_MAX;

- wm_intermediate_val = latency * pixel_rate * bytes_per_pixel / 512;
+ wm_intermediate_val = latency * pixel_rate * cpp / 512;
ret = DIV_ROUND_UP(wm_intermediate_val, 1000);

return ret;
}

static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal,
- uint32_t horiz_pixels, uint8_t bytes_per_pixel,
+ uint32_t horiz_pixels, uint8_t cpp,
uint64_t tiling, uint32_t latency)
{
uint32_t ret;
@@ -3071,7 +3069,7 @@ static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal,
if (latency == 0)
return UINT_MAX;

- plane_bytes_per_line = horiz_pixels * bytes_per_pixel;
+ plane_bytes_per_line = horiz_pixels * cpp;

if (tiling == I915_FORMAT_MOD_Y_TILED ||
tiling == I915_FORMAT_MOD_Yf_TILED) {
@@ -3121,23 +3119,21 @@ static bool skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
uint32_t plane_bytes_per_line, plane_blocks_per_line;
uint32_t res_blocks, res_lines;
uint32_t selected_result;
- uint8_t bytes_per_pixel;
+ uint8_t cpp;

if (latency == 0 || !cstate->base.active || !fb)
return false;

- bytes_per_pixel = drm_format_plane_cpp(fb->pixel_format, 0);
+ cpp = drm_format_plane_cpp(fb->pixel_format, 0);
method1 = skl_wm_method1(skl_pipe_pixel_rate(cstate),
- bytes_per_pixel,
- latency);
+ cpp, latency);
method2 = skl_wm_method2(skl_pipe_pixel_rate(cstate),
cstate->base.adjusted_mode.crtc_htotal,
cstate->pipe_src_w,
- bytes_per_pixel,
- fb->modifier[0],
+ cpp, fb->modifier[0],
latency);

- plane_bytes_per_line = cstate->pipe_src_w * bytes_per_pixel;
+ plane_bytes_per_line = cstate->pipe_src_w * cpp;
plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512);

if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED ||
@@ -3145,11 +3141,11 @@ static bool skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
uint32_t min_scanlines = 4;
uint32_t y_tile_minimum;
if (intel_rotation_90_or_270(plane->state->rotation)) {
- int bpp = (fb->pixel_format == DRM_FORMAT_NV12) ?
+ int cpp = (fb->pixel_format == DRM_FORMAT_NV12) ?
drm_format_plane_cpp(fb->pixel_format, 1) :
drm_format_plane_cpp(fb->pixel_format, 0);

- switch (bpp) {
+ switch (cpp) {
case 1:
min_scanlines = 16;
break;
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index f1ee7db0811a..a2582c455b36 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -351,7 +351,7 @@ vlv_update_plane(struct drm_plane *dplane,
int plane = intel_plane->plane;
u32 sprctl;
u32 sprsurf_offset, linear_offset;
- int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
int crtc_x = plane_state->dst.x1;
int crtc_y = plane_state->dst.y1;
@@ -422,10 +422,9 @@ vlv_update_plane(struct drm_plane *dplane,
crtc_w--;
crtc_h--;

- linear_offset = y * fb->pitches[0] + x * pixel_size;
+ linear_offset = y * fb->pitches[0] + x * cpp;
sprsurf_offset = intel_compute_tile_offset(dev_priv, &x, &y,
- fb->modifier[0],
- pixel_size,
+ fb->modifier[0], cpp,
fb->pitches[0]);
linear_offset -= sprsurf_offset;

@@ -434,7 +433,7 @@ vlv_update_plane(struct drm_plane *dplane,

x += src_w;
y += src_h;
- linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ linear_offset += src_h * fb->pitches[0] + src_w * cpp;
}

if (key->flags) {
@@ -494,7 +493,7 @@ ivb_update_plane(struct drm_plane *plane,
enum pipe pipe = intel_plane->pipe;
u32 sprctl, sprscale = 0;
u32 sprsurf_offset, linear_offset;
- int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
int crtc_x = plane_state->dst.x1;
int crtc_y = plane_state->dst.y1;
@@ -556,10 +555,9 @@ ivb_update_plane(struct drm_plane *plane,
if (crtc_w != src_w || crtc_h != src_h)
sprscale = SPRITE_SCALE_ENABLE | (src_w << 16) | src_h;

- linear_offset = y * fb->pitches[0] + x * pixel_size;
+ linear_offset = y * fb->pitches[0] + x * cpp;
sprsurf_offset = intel_compute_tile_offset(dev_priv, &x, &y,
- fb->modifier[0],
- pixel_size,
+ fb->modifier[0], cpp,
fb->pitches[0]);
linear_offset -= sprsurf_offset;

@@ -570,8 +568,7 @@ ivb_update_plane(struct drm_plane *plane,
if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
x += src_w;
y += src_h;
- linear_offset += src_h * fb->pitches[0] +
- src_w * pixel_size;
+ linear_offset += src_h * fb->pitches[0] + src_w * cpp;
}
}

@@ -637,7 +634,7 @@ ilk_update_plane(struct drm_plane *plane,
int pipe = intel_plane->pipe;
u32 dvscntr, dvsscale;
u32 dvssurf_offset, linear_offset;
- int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
int crtc_x = plane_state->dst.x1;
int crtc_y = plane_state->dst.y1;
@@ -695,10 +692,9 @@ ilk_update_plane(struct drm_plane *plane,
if (crtc_w != src_w || crtc_h != src_h)
dvsscale = DVS_SCALE_ENABLE | (src_w << 16) | src_h;

- linear_offset = y * fb->pitches[0] + x * pixel_size;
+ linear_offset = y * fb->pitches[0] + x * cpp;
dvssurf_offset = intel_compute_tile_offset(dev_priv, &x, &y,
- fb->modifier[0],
- pixel_size,
+ fb->modifier[0], cpp,
fb->pitches[0]);
linear_offset -= dvssurf_offset;

@@ -707,7 +703,7 @@ ilk_update_plane(struct drm_plane *plane,

x += src_w;
y += src_h;
- linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ linear_offset += src_h * fb->pitches[0] + src_w * cpp;
}

if (key->flags) {
@@ -772,7 +768,6 @@ intel_check_sprite_plane(struct drm_plane *plane,
int hscale, vscale;
int max_scale, min_scale;
bool can_scale;
- int pixel_size;

if (!fb) {
state->visible = false;
@@ -894,6 +889,7 @@ intel_check_sprite_plane(struct drm_plane *plane,
/* Check size restrictions when scaling */
if (state->visible && (src_w != crtc_w || src_h != crtc_h)) {
unsigned int width_bytes;
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);

WARN_ON(!can_scale);

@@ -905,9 +901,7 @@ intel_check_sprite_plane(struct drm_plane *plane,
if (src_w < 3 || src_h < 3)
state->visible = false;

- pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
- width_bytes = ((src_x * pixel_size) & 63) +
- src_w * pixel_size;
+ width_bytes = ((src_x * cpp) & 63) + src_w * cpp;

if (INTEL_INFO(dev)->gen < 9 && (src_w > 2048 || src_h > 2048 ||
width_bytes > 4096 || fb->pitches[0] > 4096)) {
--
2.4.10