From: Sean Paul <seanp...@chromium.org> Instead of fully disabling and re-enabling the vop on self refresh transitions, only disable the active windows. This will speed up self refresh exits substantially and is still a power-savings win.
This patch integrates portions of Zain's patch from here: https://patchwork.kernel.org/patch/9615063/ Changes in v2: - None Changes in v3: - None Changes in v4: - Adjust for preceding vop_win_disable changes Link to v1: https://patchwork.freedesktop.org/patch/msgid/20190228210939.83386-5-s...@poorly.run Link to v2: https://patchwork.freedesktop.org/patch/msgid/20190326204509.96515-4-s...@poorly.run Link to v3: https://patchwork.freedesktop.org/patch/msgid/20190502194956.218441-10-s...@poorly.run Cc: Zain Wang <w...@rock-chips.com> Cc: Tomasz Figa <tf...@chromium.org> Cc: Kristian H. Kristensen <hoegsb...@chromium.org> Signed-off-by: Sean Paul <seanp...@chromium.org> --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 41 ++++++++++++++++++--- 1 file changed, 36 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index 15a5b44eb7e7..acdc86a9144b 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -134,6 +134,7 @@ struct vop { bool is_enabled; struct completion dsp_hold_completion; + unsigned int win_enabled; /* protected by dev->event_lock */ struct drm_pending_vblank_event *event; @@ -555,6 +556,7 @@ static void vop_win_disable(struct vop *vop, const struct vop_win *vop_win) } VOP_WIN_SET(vop, win, enable, 0); + vop->win_enabled &= ~BIT(VOP_WIN_TO_INDEX(vop_win)); } static int vop_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) @@ -637,6 +639,25 @@ static int vop_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) return ret; } +static void rockchip_drm_set_win_enabled(struct drm_crtc *crtc, bool enabled) +{ + struct vop *vop = to_vop(crtc); + int i; + + spin_lock(&vop->reg_lock); + + for (i = 0; i < vop->data->win_size; i++) { + struct vop_win *vop_win = &vop->win[i]; + const struct vop_win_data *win = vop_win->data; + + VOP_WIN_SET(vop, win, enable, + enabled && (vop->win_enabled & BIT(i))); + } + vop_cfg_done(vop); + + spin_unlock(&vop->reg_lock); +} + static void vop_crtc_atomic_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { @@ -644,15 +665,16 @@ static void vop_crtc_atomic_disable(struct drm_crtc *crtc, WARN_ON(vop->event); - mutex_lock(&vop->vop_lock); + if (crtc->state->self_refresh_active) + rockchip_drm_set_win_enabled(crtc, false); - if (!vop->is_enabled) { - mutex_unlock(&vop->vop_lock); - return; - } + mutex_lock(&vop->vop_lock); drm_crtc_vblank_off(crtc); + if (crtc->state->self_refresh_active) + goto out; + /* * Vop standby will take effect at end of current frame, * if dsp hold valid irq happen, it means standby complete. @@ -683,6 +705,8 @@ static void vop_crtc_atomic_disable(struct drm_crtc *crtc, clk_disable(vop->dclk); vop_core_clks_disable(vop); pm_runtime_put(vop->dev); + +out: mutex_unlock(&vop->vop_lock); if (crtc->state->event && !crtc->state->active) { @@ -900,6 +924,7 @@ static void vop_plane_atomic_update(struct drm_plane *plane, } VOP_WIN_SET(vop, win, enable, 1); + vop->win_enabled |= BIT(win_index); spin_unlock(&vop->reg_lock); } @@ -1056,6 +1081,12 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc, int dither_bpc = s->output_bpc ? s->output_bpc : 10; int ret; + if (old_state && old_state->self_refresh_active) { + drm_crtc_vblank_on(crtc); + rockchip_drm_set_win_enabled(crtc, true); + return; + } + mutex_lock(&vop->vop_lock); WARN_ON(vop->event); -- Sean Paul, Software Engineer, Google / Chromium OS _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
