Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

 * Fix include order for bison/flex-generated C files, from Ben Hutchings

 * Build fixes and documentation corrections from David Ahern

 * Group parsing support, from Jiri Olsa

 * UI/gtk refactorings and improvements from Namhyung Kim

 * NULL deref fix for perf script, from Namhyung Kim

 * Assorted cleanups from Robert Richter

 * Let O= makes handle relative paths, from Steven Rostedt

 * perf script python fixes, from Feng Tang.

 * Improve 'perf lock' error message when the needed tracepoints
   are not present, from David Ahern.

 * Initial bash completion support, from Frederic Weisbecker

 * Allow building without libelf, from Namhyung Kim.

 * Support DWARF CFI based unwind to have callchains when %bp
   based unwinding is not possible, from Jiri Olsa.

 * Symbol resolution fixes, while fixing support PPC64 files with an .opt ELF
   section was the end goal, several fixes for code that handles all
   architectures and cleanups are included, from Cody Schafer.

 * Add a description for the JIT interface, from Andi Kleen.

 * Assorted fixes for Documentation and build in 32 bit, from Robert Richter

 * Add support for non-tracepoint events in perf script python, from Feng Tang

 * Cache the libtraceevent event_format associated to each evsel early, so that we
   avoid relookups, i.e. calling pevent_find_event repeatedly when processing
   tracepoint events.

   [ This is to reduce the surface contact with libtraceevents and make clear what
     is that the perf tools needs from that lib: so far parsing the common and per
     event fields. ]

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 38 insertions, 8 deletions

diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c
index 0d7816789da..f5dd89e891d 100644
--- a/drivers/gpu/drm/udl/udl_modeset.c
+++ b/drivers/gpu/drm/udl/udl_modeset.c
@@ -45,12 +45,25 @@ static char *udl_vidreg_unlock(char *buf)
  *  0x01 H and V sync off (screen blank but powered)
  *  0x07 DPMS powerdown (requires modeset to come back)
  */
-static char *udl_enable_hvsync(char *buf, bool enable)
+static char *udl_set_blank(char *buf, int dpms_mode)
 {
-	if (enable)
-		return udl_set_register(buf, 0x1F, 0x00);
-	else
-		return udl_set_register(buf, 0x1F, 0x07);
+	u8 reg;
+	switch (dpms_mode) {
+	case DRM_MODE_DPMS_OFF:
+		reg = 0x07;
+		break;
+	case DRM_MODE_DPMS_STANDBY:
+		reg = 0x05;
+		break;
+	case DRM_MODE_DPMS_SUSPEND:
+		reg = 0x01;
+		break;
+	case DRM_MODE_DPMS_ON:
+		reg = 0x00;
+		break;
+	}
+
+	return udl_set_register(buf, 0x1f, reg);
 }
 
 static char *udl_set_color_depth(char *buf, u8 selection)
@@ -199,6 +212,20 @@ static char *udl_set_vid_cmds(char *wrptr, struct drm_display_mode *mode)
 	return wrptr;
 }
 
+static char *udl_dummy_render(char *wrptr)
+{
+	*wrptr++ = 0xAF;
+	*wrptr++ = 0x6A; /* copy */
+	*wrptr++ = 0x00; /* from addr */
+	*wrptr++ = 0x00;
+	*wrptr++ = 0x00;
+	*wrptr++ = 0x01; /* one pixel */
+	*wrptr++ = 0x00; /* to address */
+	*wrptr++ = 0x00;
+	*wrptr++ = 0x00;
+	return wrptr;
+}
+
 static int udl_crtc_write_mode_to_hw(struct drm_crtc *crtc)
 {
 	struct drm_device *dev = crtc->dev;
@@ -235,9 +262,10 @@ static void udl_crtc_dpms(struct drm_crtc *crtc, int mode)
 
 		buf = (char *)urb->transfer_buffer;
 		buf = udl_vidreg_lock(buf);
-		buf = udl_enable_hvsync(buf, false);
+		buf = udl_set_blank(buf, mode);
 		buf = udl_vidreg_unlock(buf);
 
+		buf = udl_dummy_render(buf);
 		retval = udl_submit_urb(dev, urb, buf - (char *)
 					urb->transfer_buffer);
 	} else {
@@ -251,7 +279,7 @@ static void udl_crtc_dpms(struct drm_crtc *crtc, int mode)
 }
 
 static bool udl_crtc_mode_fixup(struct drm_crtc *crtc,
-				  struct drm_display_mode *mode,
+				  const struct drm_display_mode *mode,
 				  struct drm_display_mode *adjusted_mode)
 
 {
@@ -306,9 +334,11 @@ static int udl_crtc_mode_set(struct drm_crtc *crtc,
 	wrptr = udl_set_base8bpp(wrptr, 2 * mode->vdisplay * mode->hdisplay);
 
 	wrptr = udl_set_vid_cmds(wrptr, adjusted_mode);
-	wrptr = udl_enable_hvsync(wrptr, true);
+	wrptr = udl_set_blank(wrptr, DRM_MODE_DPMS_ON);
 	wrptr = udl_vidreg_unlock(wrptr);
 
+	wrptr = udl_dummy_render(wrptr);
+
 	ufb->active_16 = true;
 	if (old_fb) {
 		struct udl_framebuffer *uold_fb = to_udl_fb(old_fb);