| Message ID | 1450750124-17020-1-git-send-email-eric@anholt.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Dec 21, 2015 at 06:08:44PM -0800, Eric Anholt wrote: > I've tested and confirmed that it doesn't actually work. We'll need > to sort out how to do this properly later, but for now just remove it > since it also caused build breakage due to using CONFIG_PM_SLEEP > functions without our Kconfig depending on PM_SLEEP. > > Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> regards sudip
On Mon, Dec 21, 2015 at 06:08:44PM -0800, Eric Anholt wrote: > I've tested and confirmed that it doesn't actually work. We'll need > to sort out how to do this properly later, but for now just remove it > since it also caused build breakage due to using CONFIG_PM_SLEEP > functions without our Kconfig depending on PM_SLEEP. > > Signed-off-by: Eric Anholt <eric@anholt.net> > --- It has still not landed in linux-next. next-20151231 still fails with the same error. regards sudip
On Mon, Dec 21, 2015 at 06:08:44PM -0800, Eric Anholt wrote: > I've tested and confirmed that it doesn't actually work. We'll need > to sort out how to do this properly later, but for now just remove it > since it also caused build breakage due to using CONFIG_PM_SLEEP > functions without our Kconfig depending on PM_SLEEP. > > Signed-off-by: Eric Anholt <eric@anholt.net> Still broken upstream. FWIW: Acked-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> > --- > drivers/gpu/drm/vc4/vc4_v3d.c | 17 +++++++---------- > 1 file changed, 7 insertions(+), 10 deletions(-) > > diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c > index 424d515..314ff71 100644 > --- a/drivers/gpu/drm/vc4/vc4_v3d.c > +++ b/drivers/gpu/drm/vc4/vc4_v3d.c > @@ -144,19 +144,16 @@ int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused) > } > #endif /* CONFIG_DEBUG_FS */ > > -/* > - * Asks the firmware to turn on power to the V3D engine. > - * > - * This may be doable with just the clocks interface, though this > - * packet does some other register setup from the firmware, too. > - */ > int > vc4_v3d_set_power(struct vc4_dev *vc4, bool on) > { > - if (on) > - return pm_generic_poweroff(&vc4->v3d->pdev->dev); > - else > - return pm_generic_resume(&vc4->v3d->pdev->dev); > + /* XXX: This interface is needed for GPU reset, and the way to > + * do it is to turn our power domain off and back on. We > + * can't just reset from within the driver, because the reset > + * bits are in the power domain's register area, and get set > + * during the poweron process. > + */ > + return 0; > } > > static void vc4_v3d_init_hw(struct drm_device *dev) > -- > 2.6.2 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > >
On Friday 22 January 2016 08:01 PM, Guenter Roeck wrote: > On Mon, Dec 21, 2015 at 06:08:44PM -0800, Eric Anholt wrote: >> I've tested and confirmed that it doesn't actually work. We'll need >> to sort out how to do this properly later, but for now just remove it >> since it also caused build breakage due to using CONFIG_PM_SLEEP >> functions without our Kconfig depending on PM_SLEEP. >> >> Signed-off-by: Eric Anholt <eric@anholt.net> > > Still broken upstream. I saw Eric sending a pull request for it. But it was never pulled, maybe for the subject. Looks like rc1 will be broken for many arch. regards sudip
On 01/22/2016 08:54 AM, Sudip Mukherjee wrote: > On Friday 22 January 2016 08:01 PM, Guenter Roeck wrote: >> On Mon, Dec 21, 2015 at 06:08:44PM -0800, Eric Anholt wrote: >>> I've tested and confirmed that it doesn't actually work. We'll need >>> to sort out how to do this properly later, but for now just remove it >>> since it also caused build breakage due to using CONFIG_PM_SLEEP >>> functions without our Kconfig depending on PM_SLEEP. >>> >>> Signed-off-by: Eric Anholt <eric@anholt.net> >> >> Still broken upstream. > > I saw Eric sending a pull request for it. But it was never pulled, maybe for the subject. > Looks like rc1 will be broken for many arch. > Could be worse. Essentially every allmodconfig/allyesconfig which doesn't configure pm is affected. With my tests (v4.4-10282-geae2177): Build results: total: 146 pass: 142 fail: 4 Failed builds: alpha:allmodconfig m68k:allmodconfig parisc:allmodconfig xtensa:allmodconfig Qemu test results: total: 96 pass: 94 fail: 2 Failed tests: arm64:smp:defconfig arm64:nosmp:defconfig arm64 qemu tests are broken for a different reason. There is a patch to fix it, but for some reason it didn't make it into mainline (yet). It is in -next, though. Guenter
diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c index 424d515..314ff71 100644 --- a/drivers/gpu/drm/vc4/vc4_v3d.c +++ b/drivers/gpu/drm/vc4/vc4_v3d.c @@ -144,19 +144,16 @@ int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused) } #endif /* CONFIG_DEBUG_FS */ -/* - * Asks the firmware to turn on power to the V3D engine. - * - * This may be doable with just the clocks interface, though this - * packet does some other register setup from the firmware, too. - */ int vc4_v3d_set_power(struct vc4_dev *vc4, bool on) { - if (on) - return pm_generic_poweroff(&vc4->v3d->pdev->dev); - else - return pm_generic_resume(&vc4->v3d->pdev->dev); + /* XXX: This interface is needed for GPU reset, and the way to + * do it is to turn our power domain off and back on. We + * can't just reset from within the driver, because the reset + * bits are in the power domain's register area, and get set + * during the poweron process. + */ + return 0; } static void vc4_v3d_init_hw(struct drm_device *dev)
I've tested and confirmed that it doesn't actually work. We'll need to sort out how to do this properly later, but for now just remove it since it also caused build breakage due to using CONFIG_PM_SLEEP functions without our Kconfig depending on PM_SLEEP. Signed-off-by: Eric Anholt <eric@anholt.net> --- drivers/gpu/drm/vc4/vc4_v3d.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-)