From f07e572f6447465d8938679533d604e402b0f066 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Thu, 18 Feb 2021 18:04:33 +0100 Subject: bcm27xx: import latest patches from the RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas --- ...p-MMU-flush-if-the-device-is-currently-of.patch | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0224-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0224-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0224-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch b/target/linux/bcm27xx/patches-5.4/950-0224-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch new file mode 100644 index 0000000000..1581cc0070 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0224-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch @@ -0,0 +1,52 @@ +From f34daf3b5ae9533f88d31eef74bbf38099e96aa1 Mon Sep 17 00:00:00 2001 +From: Eric Anholt +Date: Mon, 14 Jan 2019 12:35:43 -0800 +Subject: [PATCH] drm/v3d: Skip MMU flush if the device is currently + off. + +If it's off, we know it will be reset on poweron, so the MMU won't +have any TLB cached from before this point. Avoids failed waits for +MMU flush to reply. + +Signed-off-by: Eric Anholt +(cherry picked from commit 3ee4e2e0a9e9587eacbb69b067bbc72ab2cdc47b) +--- + drivers/gpu/drm/v3d/v3d_mmu.c | 13 +++++++++++++ + 1 file changed, 13 insertions(+) + +--- a/drivers/gpu/drm/v3d/v3d_mmu.c ++++ b/drivers/gpu/drm/v3d/v3d_mmu.c +@@ -18,6 +18,8 @@ + * each client. This is not yet implemented. + */ + ++#include ++ + #include "v3d_drv.h" + #include "v3d_regs.h" + +@@ -34,6 +36,14 @@ static int v3d_mmu_flush_all(struct v3d_ + { + int ret; + ++ /* Keep power on the device on until we're done with this ++ * call, but skip the flush if the device is off and will be ++ * reset when powered back on. ++ */ ++ ret = pm_runtime_get_if_in_use(v3d->dev); ++ if (ret == 0) ++ return 0; ++ + /* Make sure that another flush isn't already running when we + * start this one. + */ +@@ -61,6 +71,9 @@ static int v3d_mmu_flush_all(struct v3d_ + if (ret) + dev_err(v3d->dev, "MMUC flush wait idle failed\n"); + ++ pm_runtime_mark_last_busy(v3d->dev); ++ pm_runtime_put_autosuspend(v3d->dev); ++ + return ret; + } + -- cgit v1.2.3