diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index ccaadc87b6b..c20d6829807 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2123,6 +2123,7 @@ static uint32_t ilk_pipe_pixel_rate(struct drm_device *dev, return pixel_rate; } +/* 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) { @@ -2137,6 +2138,7 @@ static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, return ret; } +/* 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 latency) @@ -2200,7 +2202,10 @@ enum hsw_data_buf_partitioning { HSW_DATA_BUF_PART_5_6, }; -/* For both WM_PIPE and WM_LP. */ +/* + * For both WM_PIPE and WM_LP. + * mem_value must be in 0.1us units. + */ static uint32_t ilk_compute_pri_wm(struct hsw_pipe_wm_parameters *params, uint32_t mem_value, bool is_lp) @@ -2227,7 +2232,10 @@ static uint32_t ilk_compute_pri_wm(struct hsw_pipe_wm_parameters *params, return min(method1, method2); } -/* For both WM_PIPE and WM_LP. */ +/* + * For both WM_PIPE and WM_LP. + * mem_value must be in 0.1us units. + */ static uint32_t ilk_compute_spr_wm(struct hsw_pipe_wm_parameters *params, uint32_t mem_value) { @@ -2247,7 +2255,10 @@ static uint32_t ilk_compute_spr_wm(struct hsw_pipe_wm_parameters *params, return min(method1, method2); } -/* For both WM_PIPE and WM_LP. */ +/* + * For both WM_PIPE and WM_LP. + * mem_value must be in 0.1us units. + */ static uint32_t ilk_compute_cur_wm(struct hsw_pipe_wm_parameters *params, uint32_t mem_value) { |