On 04/11/2014 04:31 PM, Ben Skeggs wrote:
On Fri, Apr 11, 2014 at 12:46 PM, Alexandre Courbot <gnurou@xxxxxxxxx> wrote:
On Wed, Mar 26, 2014 at 1:19 PM, Ben Skeggs <skeggsb@xxxxxxxxx> wrote:
On Tue, Mar 25, 2014 at 7:54 AM, Thierry Reding
<thierry.reding@xxxxxxxxx> wrote:
On Mon, Mar 24, 2014 at 05:42:24PM +0900, Alexandre Courbot wrote:
GK20A's timer is directly attached to the system timer and cannot be
calibrated. Skip the calibration phase on that chip since the
corresponding registers do not exist.
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
---
drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c
index c0bdd10358d7..822fe0d8a871 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c
@@ -185,6 +185,10 @@ nv04_timer_init(struct nouveau_object *object)
if (ret)
return ret;
+ /* gk20a does not have the calibration registers */
+ if (device->chipset == 0xea)
+ goto skip_clk_init;
I'm concerned that this won't scale in the future. Perhaps a better
solution would be to add a "flags" or "features" field to struct
nouveau_device along with feature bits such as HAS_CALIBRATION or
similar.
That way we don't have to touch this code for every new future Tegra
chip. Unless perhaps if there's a reason to expect things to change in
newer generations.
I've already handled this in a slightly different way in the tree I'd
previously pointed Alex at (I think!), as I needed to do the same for
GM107.
Should just be able to use that implementation (so, just change the
probe patch) here too.
I will skip this patch and use your implementation then. Btw,
shouldn't the source file for the GK20A implementation be named nvea.c
instead of gk20a.c?
For the Maxwell stuff I've been using "gm107" now too. Since we're
working with you guys these days it seems better to use the same names
for things ;)
So would you like us to use the same naming scheme as well? So far all
my patches use "nvea.c" whenever I need to add code.
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