From: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
[ Upstream commit 0478b4fc5f37f4d494245fe7bcce3f531cf380e9 ]
If the opp table specifies opp-supported-hw as a property but the driver
has not set a supported hardware value the OPP subsystem will reject
all the table entries.
Set a "default" value that will match the default table entries but not
conflict with any possible real bin values. Also fix a small memory leak
and free the buffer allocated by nvmem_cell_read().
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
Reviewed-by: Eric Anholt <eric@xxxxxxxxxx>
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index 7d9e63e20dedd..724024a2243a4 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1446,18 +1446,31 @@ static const struct adreno_gpu_funcs funcs = {
static void check_speed_bin(struct device *dev)
{
struct nvmem_cell *cell;
- u32 bin, val;
+ u32 val;
+
+ /*
+ * If the OPP table specifies a opp-supported-hw property then we have
+ * to set something with dev_pm_opp_set_supported_hw() or the table
+ * doesn't get populated so pick an arbitrary value that should
+ * ensure the default frequencies are selected but not conflict with any
+ * actual bins
+ */
+ val = 0x80;
cell = nvmem_cell_get(dev, "speed_bin");
- /* If a nvmem cell isn't defined, nothing to do */
- if (IS_ERR(cell))
- return;
+ if (!IS_ERR(cell)) {
+ void *buf = nvmem_cell_read(cell, NULL);
+
+ if (!IS_ERR(buf)) {
+ u8 bin = *((u8 *) buf);
- bin = *((u32 *) nvmem_cell_read(cell, NULL));
- nvmem_cell_put(cell);
+ val = (1 << bin);
+ kfree(buf);
+ }
- val = (1 << bin);
+ nvmem_cell_put(cell);
+ }
dev_pm_opp_set_supported_hw(dev, &val, 1);
}
--
2.20.1
