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Message-Id: <20201111011456.7875-11-digetx@gmail.com>
Date: Wed, 11 Nov 2020 04:14:40 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Georgi Djakov <georgi.djakov@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Peter De Schrijver <pdeschrijver@...dia.com>,
MyungJoo Ham <myungjoo.ham@...sung.com>,
Kyungmin Park <kyungmin.park@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>,
Mikko Perttunen <cyndis@...si.fi>,
Viresh Kumar <vireshk@...nel.org>,
Peter Geis <pgwipeout@...il.com>,
Nicolas Chauvet <kwizart@...il.com>,
Krzysztof Kozlowski <krzk@...nel.org>
Cc: linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH v8 10/26] memory: tegra30-emc: Factor out clk initialization
Factor out clk initialization and make it resource-managed. This makes
easier to follow code and will help to make further changes cleaner.
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
drivers/memory/tegra/tegra30-emc.c | 70 ++++++++++++++++++++----------
1 file changed, 47 insertions(+), 23 deletions(-)
diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c
index d27df842a667..1df42e212d73 100644
--- a/drivers/memory/tegra/tegra30-emc.c
+++ b/drivers/memory/tegra/tegra30-emc.c
@@ -1550,6 +1550,49 @@ static int tegra_emc_opp_table_init(struct tegra_emc *emc)
return err;
}
+static void devm_tegra_emc_unset_callback(void *data)
+{
+ tegra20_clk_set_emc_round_callback(NULL, NULL);
+}
+
+static void devm_tegra_emc_unreg_clk_notifier(void *data)
+{
+ struct tegra_emc *emc = data;
+
+ clk_notifier_unregister(emc->clk, &emc->clk_nb);
+}
+
+static int tegra_emc_init_clk(struct tegra_emc *emc)
+{
+ int err;
+
+ tegra20_clk_set_emc_round_callback(emc_round_rate, emc);
+
+ err = devm_add_action_or_reset(emc->dev, devm_tegra_emc_unset_callback,
+ NULL);
+ if (err)
+ return err;
+
+ emc->clk = devm_clk_get(emc->dev, NULL);
+ if (IS_ERR(emc->clk)) {
+ dev_err(emc->dev, "failed to get EMC clock: %pe\n", emc->clk);
+ return PTR_ERR(emc->clk);
+ }
+
+ err = clk_notifier_register(emc->clk, &emc->clk_nb);
+ if (err) {
+ dev_err(emc->dev, "failed to register clk notifier: %d\n", err);
+ return err;
+ }
+
+ err = devm_add_action_or_reset(emc->dev,
+ devm_tegra_emc_unreg_clk_notifier, emc);
+ if (err)
+ return err;
+
+ return 0;
+}
+
static int tegra_emc_probe(struct platform_device *pdev)
{
struct device_node *np;
@@ -1599,25 +1642,13 @@ static int tegra_emc_probe(struct platform_device *pdev)
return err;
}
- tegra20_clk_set_emc_round_callback(emc_round_rate, emc);
-
- emc->clk = devm_clk_get(&pdev->dev, "emc");
- if (IS_ERR(emc->clk)) {
- err = PTR_ERR(emc->clk);
- dev_err(&pdev->dev, "failed to get emc clock: %d\n", err);
- goto unset_cb;
- }
-
- err = clk_notifier_register(emc->clk, &emc->clk_nb);
- if (err) {
- dev_err(&pdev->dev, "failed to register clk notifier: %d\n",
- err);
- goto unset_cb;
- }
+ err = tegra_emc_init_clk(emc);
+ if (err)
+ return err;
err = tegra_emc_opp_table_init(emc);
if (err)
- goto unreg_notifier;
+ return err;
platform_set_drvdata(pdev, emc);
tegra_emc_rate_requests_init(emc);
@@ -1632,13 +1663,6 @@ static int tegra_emc_probe(struct platform_device *pdev)
try_module_get(THIS_MODULE);
return 0;
-
-unreg_notifier:
- clk_notifier_unregister(emc->clk, &emc->clk_nb);
-unset_cb:
- tegra20_clk_set_emc_round_callback(NULL, NULL);
-
- return err;
}
static int tegra_emc_suspend(struct device *dev)
--
2.29.2
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