diff options
Diffstat (limited to 'samsung')
| -rw-r--r-- | samsung/exynos_drm_bts.c | 10 | ||||
| -rw-r--r-- | samsung/exynos_drm_decon.c | 7 | ||||
| -rw-r--r-- | samsung/exynos_drm_decon.h | 1 |
3 files changed, 18 insertions, 0 deletions
diff --git a/samsung/exynos_drm_bts.c b/samsung/exynos_drm_bts.c index 8bed570..7fc453a 100644 --- a/samsung/exynos_drm_bts.c +++ b/samsung/exynos_drm_bts.c @@ -882,6 +882,16 @@ static void dpu_bts_update_resources(struct decon_device *decon, bool shadow_upd DPU_DEBUG_BTS(" peak = %u, rt = %u, read = %u, write = %u\n", bw.peak, bw.rt, bw.read, bw.write); + /* When concurrent writeback is enabled, writeback instant off may occur if the outfifo + * for writeback is full meanwhile the outfifo for LCD is not full yet. + * We can limit max_disp_freq to avoid it when concurrent writeback is enabled. + * Currently, the issue only occurs when all layers are solid color layers (read = 0). + */ + if ((decon->bts.max_dfs_lv_for_wb > 0) && (bw.read == 0) && (bw.write > 0)) { + decon->bts.max_disp_freq = + min(decon->bts.max_disp_freq, decon->bts.max_dfs_lv_for_wb); + } + if (shadow_updated) { /* after DECON h/w configs are updated to shadow SFR */ if (decon->bts.total_bw < decon->bts.prev_total_bw || diff --git a/samsung/exynos_drm_decon.c b/samsung/exynos_drm_decon.c index f5f1e23..74adb9e 100644 --- a/samsung/exynos_drm_decon.c +++ b/samsung/exynos_drm_decon.c @@ -1843,6 +1843,13 @@ static int decon_parse_dt(struct decon_device *decon, struct device_node *np) decon_info(decon, "\n"); } + if (of_property_read_u32(np, "max_dfs_lv_for_wb", &decon->bts.max_dfs_lv_for_wb)) { + decon->bts.max_dfs_lv_for_wb = 0; + decon_debug(decon, "max_dfs_lv_for_wb is not defined in DT.\n"); + } else { + decon_debug(decon, "max_dfs_lv_for_wb(%u)\n", decon->bts.max_dfs_lv_for_wb); + } + decon->dpp_cnt = of_count_phandle_with_args(np, "dpps", NULL); for (i = 0; i < decon->dpp_cnt; ++i) { dpp_np = of_parse_phandle(np, "dpps", i); diff --git a/samsung/exynos_drm_decon.h b/samsung/exynos_drm_decon.h index e9f3fa1..69f707d 100644 --- a/samsung/exynos_drm_decon.h +++ b/samsung/exynos_drm_decon.h @@ -155,6 +155,7 @@ struct dpu_bts { u32 afbc_yuv_rt_util_pct; u32 dfs_lv_cnt; u32 dfs_lv_khz[BTS_DFS_MAX]; + u32 max_dfs_lv_for_wb; u32 vbp; u32 vfp; u32 vsa; |