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authorJohn Stultz <john.stultz@linaro.org>2013-09-26 21:05:54 +0200
committerJohn Stultz <john.stultz@linaro.org>2013-09-26 21:05:54 +0200
commit17deb9c2db01c7813611291d251d8c7dbdfd3c9d (patch)
tree6e023c0be7c64de84dd51a671eb09c5c82b56615 /drivers/gpu/drm/msm/msm_ringbuffer.h
parentclocksource: vf_pit_timer: Switch to sched_clock_register() (diff)
parentMerge branch 'fortglx/3.12/time' into fortglx/3.13/time (diff)
downloadlinux-17deb9c2db01c7813611291d251d8c7dbdfd3c9d.tar.xz
linux-17deb9c2db01c7813611291d251d8c7dbdfd3c9d.zip
Merge remote-tracking branch 'tip/timers/core' into fordlezcano/3.13/sched-clock64-conversion
Update to tip/timers/core and resolve minor conflict. Conflicts: drivers/clocksource/samsung_pwm_timer.c Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_ringbuffer.h')
-rw-r--r--drivers/gpu/drm/msm/msm_ringbuffer.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.h b/drivers/gpu/drm/msm/msm_ringbuffer.h
new file mode 100644
index 000000000000..6e0e1049fa4f
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_ringbuffer.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __MSM_RINGBUFFER_H__
+#define __MSM_RINGBUFFER_H__
+
+#include "msm_drv.h"
+
+struct msm_ringbuffer {
+ struct msm_gpu *gpu;
+ int size;
+ struct drm_gem_object *bo;
+ uint32_t *start, *end, *cur;
+};
+
+struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size);
+void msm_ringbuffer_destroy(struct msm_ringbuffer *ring);
+
+/* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */
+
+static inline void
+OUT_RING(struct msm_ringbuffer *ring, uint32_t data)
+{
+ if (ring->cur == ring->end)
+ ring->cur = ring->start;
+ *(ring->cur++) = data;
+}
+
+#endif /* __MSM_RINGBUFFER_H__ */