linux-kernel - [PATCH v2 2/2] drm/msm: Cleanup A6XX opp-level reading

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Date:   Wed, 16 Jan 2019 10:46:22 -0800
From:   Douglas Anderson <dianders@...omium.org>
To:     Rob Clark <robdclark@...il.com>,
        Jordan Crouse <jcrouse@...eaurora.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Andy Gross <andy.gross@...aro.org>,
        linux-arm-msm@...r.kernel.org,
        Viresh Kumar <viresh.kumar@...aro.org>,
        "Kristian H . Kristensen" <hoegsberg@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Colin Ian King <colin.king@...onical.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Sharat Masetty <smasetty@...eaurora.org>,
        David Airlie <airlied@...ux.ie>,
        freedreno@...ts.freedesktop.org,
        Mamta Shukla <mamtashukla555@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Subject: [PATCH v2 2/2] drm/msm: Cleanup A6XX opp-level reading

The patch ("OPP: Add support for parsing the 'opp-level' property")
adds an API enabling a cleaner way to read the opp-level.  Let's use
the new API.

Signed-off-by: Douglas Anderson <dianders@...omium.org>
Reviewed-by: Jordan Crouse <jcrouse@...eaurora.org>
---
Obviously this can't land until we have a tree that contains the patch
adding the API.  I believe that means we'll want to target this patch
for 5.2.  Luckily it's fine to wait since this patch has no functional
changes--it's all cleanup.

Changes in v2:
- Split into two patches to facilitate landing.

 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index ce1b3cc4bf6d..900f18dc1577 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -928,25 +928,20 @@ static int a6xx_gmu_memory_probe(struct a6xx_gmu *gmu)
 }
 
 /* Return the 'arc-level' for the given frequency */
-static u32 a6xx_gmu_get_arc_level(struct device *dev, unsigned long freq)
+static unsigned int a6xx_gmu_get_arc_level(struct device *dev,
+					   unsigned long freq)
 {
 	struct dev_pm_opp *opp;
-	struct device_node *np;
-	u32 val = 0;
+	unsigned int val;
 
 	if (!freq)
 		return 0;
 
-	opp  = dev_pm_opp_find_freq_exact(dev, freq, true);
+	opp = dev_pm_opp_find_freq_exact(dev, freq, true);
 	if (IS_ERR(opp))
 		return 0;
 
-	np = dev_pm_opp_get_of_node(opp);
-
-	if (np) {
-		of_property_read_u32(np, "opp-level", &val);
-		of_node_put(np);
-	}
+	val = dev_pm_opp_get_level(opp);
 
 	dev_pm_opp_put(opp);
 
@@ -982,7 +977,7 @@ static int a6xx_gmu_rpmh_arc_votes_init(struct device *dev, u32 *votes,
 	/* Construct a vote for each frequency */
 	for (i = 0; i < freqs_count; i++) {
 		u8 pindex = 0, sindex = 0;
-		u32 level = a6xx_gmu_get_arc_level(dev, freqs[i]);
+		unsigned int level = a6xx_gmu_get_arc_level(dev, freqs[i]);
 
 		/* Get the primary index that matches the arc level */
 		for (j = 0; j < pri_count; j++) {
-- 
2.20.1.97.g81188d93c3-goog