From 2340c646e6a5da658e114be2f721ff90853588d4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Fri, 9 Aug 2019 19:50:30 +0200 Subject: brcm2708: update to latest patches from RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Álvaro Fernández Rojas --- ...e-sure-the-GPU-is-on-when-measuring-clock.patch | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.19/950-0579-drm-v3d-Make-sure-the-GPU-is-on-when-measuring-clock.patch (limited to 'target/linux/brcm2708/patches-4.19/950-0579-drm-v3d-Make-sure-the-GPU-is-on-when-measuring-clock.patch') diff --git a/target/linux/brcm2708/patches-4.19/950-0579-drm-v3d-Make-sure-the-GPU-is-on-when-measuring-clock.patch b/target/linux/brcm2708/patches-4.19/950-0579-drm-v3d-Make-sure-the-GPU-is-on-when-measuring-clock.patch new file mode 100644 index 0000000000..5fd889f473 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0579-drm-v3d-Make-sure-the-GPU-is-on-when-measuring-clock.patch @@ -0,0 +1,38 @@ +From 452de2d412157502f7365517eb21d2aaa25d5133 Mon Sep 17 00:00:00 2001 +From: Eric Anholt +Date: Mon, 14 Jan 2019 17:26:04 -0800 +Subject: [PATCH 579/773] drm/v3d: Make sure the GPU is on when measuring + clocks. + +You'll get garbage measurements if the registers always read back +0xdeadbeef + +Signed-off-by: Eric Anholt +--- + drivers/gpu/drm/v3d/v3d_debugfs.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +--- a/drivers/gpu/drm/v3d/v3d_debugfs.c ++++ b/drivers/gpu/drm/v3d/v3d_debugfs.c +@@ -187,6 +187,11 @@ static int v3d_measure_clock(struct seq_ + uint32_t cycles; + int core = 0; + int measure_ms = 1000; ++ int ret; ++ ++ ret = pm_runtime_get_sync(v3d->dev); ++ if (ret < 0) ++ return ret; + + if (v3d->ver >= 40) { + V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3, +@@ -210,6 +215,9 @@ static int v3d_measure_clock(struct seq_ + cycles / (measure_ms * 1000), + (cycles / (measure_ms * 100)) % 10); + ++ pm_runtime_mark_last_busy(v3d->dev); ++ pm_runtime_put_autosuspend(v3d->dev); ++ + return 0; + } + -- cgit v1.2.3