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104 lines
3.5 KiB
Diff
104 lines
3.5 KiB
Diff
From c95479213d28d9866e617a54b0435c974874ce9d Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Thu, 6 Jul 2017 11:45:48 -0700
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Subject: [PATCH] drm/vc4: Add support for setting DPMS in firmwarekms.
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This ensures that the screen goes blank during DPMS (screensaver),
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including the cursor. Planes don't necessarily get disabled during
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CRTC disable, so we need to be careful to not leave them on or turn
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them back on early.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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drivers/gpu/drm/vc4/vc4_firmware_kms.c | 40 ++++++++++++++++++++++++--
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1 file changed, 37 insertions(+), 3 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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@@ -36,6 +36,8 @@ struct vc4_crtc {
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struct drm_crtc base;
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struct drm_encoder *encoder;
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struct drm_connector *connector;
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+ struct drm_plane *primary;
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+ struct drm_plane *cursor;
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void __iomem *regs;
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struct drm_pending_vblank_event *event;
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@@ -123,8 +125,6 @@ static void vc4_primary_plane_atomic_upd
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u32 bpp = 32;
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int ret;
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- vc4_plane_set_primary_blank(plane, false);
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-
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fbinfo->xres = state->crtc_w;
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fbinfo->yres = state->crtc_h;
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fbinfo->xres_virtual = state->crtc_w;
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@@ -168,6 +168,12 @@ static void vc4_primary_plane_atomic_upd
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vc4_plane->fbinfo_bus_addr);
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WARN_ON_ONCE(fbinfo->pitch != fb->pitches[0]);
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WARN_ON_ONCE(fbinfo->base != bo->paddr + fb->offsets[0]);
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+
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+ /* If the CRTC is on (or going to be on) and we're enabled,
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+ * then unblank. Otherwise, stay blank until CRTC enable.
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+ */
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+ if (state->crtc->state->active)
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+ vc4_plane_set_primary_blank(plane, false);
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}
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static void vc4_primary_plane_atomic_disable(struct drm_plane *plane,
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@@ -184,7 +190,12 @@ static void vc4_cursor_plane_atomic_upda
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struct drm_framebuffer *fb = state->fb;
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struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
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int ret;
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- u32 packet_state[] = { true, state->crtc_x, state->crtc_y, 0 };
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+ u32 packet_state[] = {
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+ state->crtc->state->active,
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+ state->crtc_x,
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+ state->crtc_y,
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+ 0
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+ };
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u32 packet_info[] = { state->crtc_w, state->crtc_h,
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0, /* unused */
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bo->paddr + fb->offsets[0],
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@@ -321,10 +332,30 @@ static void vc4_crtc_mode_set_nofb(struc
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static void vc4_crtc_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state)
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{
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+ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
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+
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+ /* Always turn the planes off on CRTC disable. In DRM, planes
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+ * are enabled/disabled through the update/disable hooks
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+ * above, and the CRTC enable/disable independently controls
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+ * whether anything scans out at all, but the firmware doesn't
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+ * give us a CRTC-level control for that.
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+ */
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+ vc4_cursor_plane_atomic_disable(vc4_crtc->cursor,
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+ vc4_crtc->cursor->state);
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+ vc4_plane_set_primary_blank(vc4_crtc->primary, true);
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}
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static void vc4_crtc_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state)
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{
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+ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
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+
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+ /* Unblank the planes (if they're supposed to be displayed). */
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+ if (vc4_crtc->primary->state->fb)
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+ vc4_plane_set_primary_blank(vc4_crtc->primary, false);
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+ if (vc4_crtc->cursor->state->fb) {
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+ vc4_cursor_plane_atomic_update(vc4_crtc->cursor,
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+ vc4_crtc->cursor->state);
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+ }
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}
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static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
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@@ -618,6 +649,9 @@ static int vc4_fkms_bind(struct device *
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primary_plane->crtc = crtc;
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cursor_plane->crtc = crtc;
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+ vc4_crtc->primary = primary_plane;
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+ vc4_crtc->cursor = cursor_plane;
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+
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vc4_encoder = devm_kzalloc(dev, sizeof(*vc4_encoder), GFP_KERNEL);
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if (!vc4_encoder)
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return -ENOMEM;
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