From: Chanwoo Choi <cw00.choi@samsung.com>
To: robh+dt@kernel.org, krzk@kernel.org, heiko@sntech.de,
leonard.crestez@nxp.com, lukasz.luba@arm.com
Cc: mark.rutland@arm.com, a.swigon@samsung.com,
m.szyprowski@samsung.com, kgene@kernel.org,
cw00.choi@samsung.com, myungjoo.ham@samsung.com,
kyungmin.park@samsung.com, linux-pm@vger.kernel.org,
linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org
Subject: [PATCH v2 07/11] PM / devfreq: exynos-bus: Replace the deprecated 'devfreq' and 'devfreq-events' property
Date: Fri, 20 Dec 2019 09:24:26 +0900 [thread overview]
Message-ID: <20191220002430.11995-8-cw00.choi@samsung.com> (raw)
In-Reply-To: <20191220002430.11995-1-cw00.choi@samsung.com>
Replace the deprecated 'devfreq' and 'devfreq-events' property
with new following properties.
- 'devfreq' is changed to 'exynos,parent-bus' property
- 'devfreq-events' is changed to 'exynos,ppmu-device' property
But, to guarantee the backward-compatibility, keep the support
both 'devfreq' and 'devfreq-events' property.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
drivers/devfreq/exynos-bus.c | 52 +++++++++++++++++++++++++-----------
1 file changed, 37 insertions(+), 15 deletions(-)
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index c4931ef53f15..9fdb188915e8 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -88,22 +88,35 @@ static int exynos_bus_get_event(struct exynos_bus *bus,
static struct devfreq *exynos_bus_get_parent_devfreq(struct device_node *np)
{
- struct device_node *node = of_parse_phandle(np, "devfreq", 0);
-
- if (!node)
- return ERR_PTR(-ENODEV);
-
+ struct device_node *node = of_parse_phandle(np, "exynos,parent-bus", 0);
+
+ if (!node) {
+ /*
+ * Check the deprecated 'devfreq' property
+ * to support backward-compatibility.
+ */
+ node = of_parse_phandle(np, "devfreq", 0);
+ if (!node)
+ return ERR_PTR(-ENODEV);
+ }
return devfreq_get_devfreq_by_node(node);
}
static struct devfreq_event_dev *exynos_bus_get_edev(struct device_node *np,
int index)
{
- struct device_node *node = of_parse_phandle(np, "devfreq-events",
- index);
-
- if (!node)
- return ERR_PTR(-ENODEV);
+ struct device_node *node = of_parse_phandle(np,
+ "exynos,ppmu-device", index);
+
+ if (!node) {
+ /*
+ * Check the deprecated 'devfreq-events' property
+ * to support backward-compatibility.
+ */
+ node = of_parse_phandle(np, "devfreq-events", index);
+ if (!node)
+ return ERR_PTR(-ENODEV);
+ }
return devfreq_event_get_edev_by_node(node);
}
@@ -214,11 +227,20 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
* buses. This raw data will be used in devfreq ondemand governor.
*/
count = of_property_count_elems_of_size(dev->of_node,
- "devfreq-events", sizeof(u32));
+ "exynos,ppmu-device", sizeof(u32));
if (count < 0) {
- dev_err(dev, "failed to get the count of devfreq-event dev\n");
- ret = count;
- goto err_regulator;
+ /*
+ * Check the deprecated 'devfreq-events' property
+ * to support backward-compatibility.
+ */
+ count = of_property_count_elems_of_size(dev->of_node,
+ "devfreq-events", sizeof(u32));
+ if (count < 0) {
+ dev_err(dev,
+ "failed to get the count of devfreq-event dev\n");
+ ret = count;
+ goto err_regulator;
+ }
}
bus->edev_count = count;
@@ -423,7 +445,7 @@ static int exynos_bus_probe(struct platform_device *pdev)
if (!profile)
return -ENOMEM;
- node = of_parse_phandle(dev->of_node, "devfreq", 0);
+ node = of_parse_phandle(dev->of_node, "exynos,parent-bus", 0);
if (node) {
of_node_put(node);
passive = true;
--
2.17.1
next prev parent reply other threads:[~2019-12-20 0:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20191220001759epcas1p131a41a619847d80c64470f7c1920121f@epcas1p1.samsung.com>
2019-12-20 0:24 ` [PATCH v2 00/11] PM / devfreq: Remove deprecated 'devfreq' and 'devfreq-events' properties Chanwoo Choi
[not found] ` <CGME20191220001759epcas1p4bbbcf6a84c09229db0ddae86be294405@epcas1p4.samsung.com>
2019-12-20 0:24 ` [PATCH v2 01/11] PM / devfreq: Add devfreq_get_devfreq_by_node function Chanwoo Choi
2020-01-09 9:47 ` Lukasz Luba
[not found] ` <CGME20191220001759epcas1p4ce1c2017937a35de84eab720b9732df0@epcas1p4.samsung.com>
2019-12-20 0:24 ` [PATCH v2 02/11] PM / devfreq: Remove devfreq_get_devfreq_by_phandle function Chanwoo Choi
2019-12-20 0:46 ` Leonard Crestez
2019-12-20 1:00 ` Chanwoo Choi
2019-12-20 1:40 ` Leonard Crestez
2019-12-20 2:14 ` Chanwoo Choi
2020-01-09 10:37 ` Lukasz Luba
2020-01-09 10:54 ` Chanwoo Choi
2020-01-09 10:57 ` Lukasz Luba
[not found] ` <CGME20191220001759epcas1p1fc0e5019514f7c99606347432d66bfd0@epcas1p1.samsung.com>
2019-12-20 0:24 ` [PATCH v2 03/11] PM / devfreq: event: Add devfreq_event_get_edev_by_node function Chanwoo Choi
[not found] ` <CGME20191220001759epcas1p3051f7916542b7234aac5273e0baab83b@epcas1p3.samsung.com>
2019-12-20 0:24 ` [PATCH v2 04/11] dt-bindings: devfreq: exynos-bus: Replace deprecated 'devfreq' and 'devfreq-events' property Chanwoo Choi
2019-12-20 8:43 ` Krzysztof Kozlowski
[not found] ` <CGME20191220001759epcas1p495fc9cdb6f2bd86abf63d16f61e68804@epcas1p4.samsung.com>
2019-12-20 0:24 ` [PATCH v2 05/11] dt-bindings: devfreq: rk3399_dmc: Replace deprecated " Chanwoo Choi
[not found] ` <CGME20191220001800epcas1p364322170854fdd171c43f6b1de2b61a4@epcas1p3.samsung.com>
2019-12-20 0:24 ` [PATCH v2 06/11] dt-bindings: memory: exynos5422-dmc: Replace the " Chanwoo Choi
[not found] ` <CGME20191220001800epcas1p3accefc4384d9503481311f25f5794cb8@epcas1p3.samsung.com>
2019-12-20 0:24 ` Chanwoo Choi [this message]
[not found] ` <CGME20191220001800epcas1p383927f73060e0e9aaad2fd9aaf881b6d@epcas1p3.samsung.com>
2019-12-20 0:24 ` [PATCH v2 08/11] PM / devfreq: rk3399_dmc: " Chanwoo Choi
[not found] ` <CGME20191220001800epcas1p41ab059757aeec99060cb4f47b0f48ac0@epcas1p4.samsung.com>
2019-12-20 0:24 ` [PATCH v2 09/11] memory: samsung: exynos5422-dmc: " Chanwoo Choi
[not found] ` <CGME20191220001800epcas1p2f2dfd9d24e275425b07a06bcdeb4aba9@epcas1p2.samsung.com>
2019-12-20 0:24 ` [PATCH v2 10/11] ARM: dts: exynos: Replace deprecated property for Exynos bus and DMC Chanwoo Choi
[not found] ` <CGME20191220001800epcas1p13d5f4ff181c10a118e151a86891a7130@epcas1p1.samsung.com>
2019-12-20 0:24 ` [PATCH v2 11/11] arm64: dts: exynos: Replace deprecated property for Exynos bus on TM2 Chanwoo Choi
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