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From:   Dmitry Osipenko <digetx@gmail.com>
To:     Qiang Yu <yuq825@gmail.com>, Rob Clark <robdclark@gmail.com>,
        Sean Paul <sean@poorly.run>, Rob Herring <robh@kernel.org>,
        Tomeu Vizoso <tomeu.vizoso@collabora.com>,
        Steven Price <steven.price@arm.com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
        Stanimir Varbanov <stanimir.varbanov@linaro.org>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Lukasz Luba <lukasz.luba@arm.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Mark Brown <broonie@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jiri Slaby <jirislaby@kernel.org>,
        Yangtao Li <tiny.windzz@gmail.com>
Cc:     Daniel Vetter <daniel@ffwll.ch>, dri-devel@lists.freedesktop.org,
        lima@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org,
        linux-media@vger.kernel.org, linux-pm@vger.kernel.org,
        linux-samsung-soc@vger.kernel.org, linux-mmc@vger.kernel.org,
        linux-spi@vger.kernel.org, linux-serial@vger.kernel.org,
        linux-tegra@vger.kernel.org
Subject: [PATCH v3 14/15] media: venus: Convert to use resource-managed OPP API
Date:   Sun, 14 Mar 2021 19:34:07 +0300
Message-Id: <20210314163408.22292-15-digetx@gmail.com>
In-Reply-To: <20210314163408.22292-1-digetx@gmail.com>
References: <20210314163408.22292-1-digetx@gmail.com>
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From: Yangtao Li <tiny.windzz@gmail.com>

Use resource-managed OPP API to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/media/platform/qcom/venus/core.h      |  1 -
 .../media/platform/qcom/venus/pm_helpers.c    | 35 +++++--------------
 2 files changed, 8 insertions(+), 28 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index a252ed32cc14..d35f60d2cb56 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -125,7 +125,6 @@ struct venus_core {
 	struct clk *vcodec1_clks[VIDC_VCODEC_CLKS_NUM_MAX];
 	struct icc_path *video_path;
 	struct icc_path *cpucfg_path;
-	struct opp_table *opp_table;
 	bool has_opp_table;
 	struct device *pmdomains[VIDC_PMDOMAINS_NUM_MAX];
 	struct device_link *opp_dl_venus;
diff --git a/drivers/media/platform/qcom/venus/pm_helpers.c b/drivers/media/platform/qcom/venus/pm_helpers.c
index 43c4e3d9e281..e61317220b9a 100644
--- a/drivers/media/platform/qcom/venus/pm_helpers.c
+++ b/drivers/media/platform/qcom/venus/pm_helpers.c
@@ -756,7 +756,6 @@ static int venc_power_v4(struct device *dev, int on)
 static int vcodec_domains_get(struct device *dev)
 {
 	int ret;
-	struct opp_table *opp_table;
 	struct device **opp_virt_dev;
 	struct venus_core *core = dev_get_drvdata(dev);
 	const struct venus_resources *res = core->res;
@@ -779,11 +778,9 @@ static int vcodec_domains_get(struct device *dev)
 		return 0;
 
 	/* Attach the power domain for setting performance state */
-	opp_table = dev_pm_opp_attach_genpd(dev, res->opp_pmdomain, &opp_virt_dev);
-	if (IS_ERR(opp_table)) {
-		ret = PTR_ERR(opp_table);
+	ret = devm_pm_opp_attach_genpd(dev, res->opp_pmdomain, &opp_virt_dev);
+	if (ret)
 		goto opp_attach_err;
-	}
 
 	core->opp_pmdomain = *opp_virt_dev;
 	core->opp_dl_venus = device_link_add(dev, core->opp_pmdomain,
@@ -792,13 +789,11 @@ static int vcodec_domains_get(struct device *dev)
 					     DL_FLAG_STATELESS);
 	if (!core->opp_dl_venus) {
 		ret = -ENODEV;
-		goto opp_dl_add_err;
+		goto opp_attach_err;
 	}
 
 	return 0;
 
-opp_dl_add_err:
-	dev_pm_opp_detach_genpd(core->opp_table);
 opp_attach_err:
 	for (i = 0; i < res->vcodec_pmdomains_num; i++) {
 		if (IS_ERR_OR_NULL(core->pmdomains[i]))
@@ -830,8 +825,6 @@ static void vcodec_domains_put(struct device *dev)
 
 	if (core->opp_dl_venus)
 		device_link_del(core->opp_dl_venus);
-
-	dev_pm_opp_detach_genpd(core->opp_table);
 }
 
 static int core_get_v4(struct device *dev)
@@ -860,45 +853,33 @@ static int core_get_v4(struct device *dev)
 	if (legacy_binding)
 		return 0;
 
-	core->opp_table = dev_pm_opp_set_clkname(dev, "core");
-	if (IS_ERR(core->opp_table))
-		return PTR_ERR(core->opp_table);
+	ret = devm_pm_opp_set_clkname(dev, "core");
+	if (ret)
+		return ret;
 
 	if (core->res->opp_pmdomain) {
-		ret = dev_pm_opp_of_add_table(dev);
+		ret = devm_pm_opp_of_add_table(dev);
 		if (!ret) {
 			core->has_opp_table = true;
 		} else if (ret != -ENODEV) {
 			dev_err(dev, "invalid OPP table in device tree\n");
-			dev_pm_opp_put_clkname(core->opp_table);
 			return ret;
 		}
 	}
 
 	ret = vcodec_domains_get(dev);
-	if (ret) {
-		if (core->has_opp_table)
-			dev_pm_opp_of_remove_table(dev);
-		dev_pm_opp_put_clkname(core->opp_table);
+	if (ret)
 		return ret;
-	}
 
 	return 0;
 }
 
 static void core_put_v4(struct device *dev)
 {
-	struct venus_core *core = dev_get_drvdata(dev);
-
 	if (legacy_binding)
 		return;
 
 	vcodec_domains_put(dev);
-
-	if (core->has_opp_table)
-		dev_pm_opp_of_remove_table(dev);
-	dev_pm_opp_put_clkname(core->opp_table);
-
 }
 
 static int core_power_v4(struct device *dev, int on)
-- 
2.30.2