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Thu, 2 Jul 2020 16:37:54 +0000 (GMT) From: Sylwester Nawrocki To: georgi.djakov@linaro.org, cw00.choi@samsung.com, krzk@kernel.org Cc: devicetree@vger.kernel.org, robh+dt@kernel.org, a.swigon@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, b.zolnierkie@samsung.com, m.szyprowski@samsung.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, s.nawrocki@samsung.com Subject: [PATCH RFC v6 3/6] PM / devfreq: exynos-bus: Add registration of interconnect child device Date: Thu, 2 Jul 2020 18:37:21 +0200 Message-Id: <20200702163724.2218-4-s.nawrocki@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200702163724.2218-1-s.nawrocki@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0WSe0hTURzHObu7d9fVjeu0PExLGC3KyCkWHR+UhdggAiH6J9NaevHRnLKp pZkPQrP5RAnFd2XkA19TxNRpzuVIcxaKCVr7w0rtwShnoObM61X87/v7ns/39z0cDomJdLiY jFElMmqVQikhhPzukVXzqQjKHu61vuiILDXZAHWUt+Hoo20BR7VGM46mVqwEKtPrCFRiKeaj iYl2AdLNT+NosreKQMsFRoDKJwZ4qMX4SYBmsxoIlK03CtDwz0c4Ki9dIgId5bqmx4R8brqf kFvyTDx5Z32GvLCrCciXdUdCiOvCgEhGGZPMqGXnbgmjdRX/8IR1+l6JrR3PBH8oLXAgIX0a /v28AbRASIroBgB7fr8TcIMNwNr6aoylRPQygB1FQbuJSWvjTuIlgCZj8V5i2jqMsxRBe8OC N4WA1c50EMz5WsNnIYzOxWB3T8n2WieagVP6le0An5bCygUDwWqK9oP5Qz18rs4dNre/3uJJ 0oH2h8PLFLsH0iMC2L+oxTgmCNrMjTu8E/xu6hJw2g2OlebzucBDAPP7ZgXcUAygxVQHOMof zpnXCLYBo0/Atl4ZZ1+AOd/sOGtD+gCc+eXI2tiWLOkuwzibgrk5Io4+CtebynicFsO8L5s7 15HDVW0Nj3ugQgDn35eBYuBesVdWB0ATcGGSNHFRjMZHxdz11CjiNEmqKM+I+Dgd2PpJY3bT Sg8Y+HfbAGgSSPZTi283wkW4IlmTEmcAkMQkztTF8bFwERWpSEll1PE31UlKRmMAriRf4kL5 PFsKE9FRikTmDsMkMOrdUx7pIM4El2whg4R9KP384GzKj6xXz8OkWR8OInvr4XSPzrQXrY0x N1oaU6q0M8fazB4WcavXqHNq4dwTa+d69abMT5Z8ZiAgNk0lvdKReKgi1BCa7H7/mlvk8QfN qYIiiVjroOu7qm85KRKu7Qseeqo/qxx1lUq144GV/ZeDfRdDrRm+sRK+Jlrh7YGpNYr/lTaK 60UDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprIIsWRmVeSWpSXmKPExsVy+t/xe7pJvP/iDO7vMra4P6+V0WLjjPWs Fte/PGe1mH/kHKvFla/v2Sym793EZjHp/gQWi/PnN7BbbHp8jdXi8q45bBafe48wWsw4v4/J Yu2Ru+wWtxtXsFm07j3CbnH4TTurxYzJL9kcBD02repk87hzbQ+bx/3u40wem5fUe/RtWcXo 8XmTXABblJ5NUX5pSapCRn5xia1StKGFkZ6hpYWekYmlnqGxeayVkamSvp1NSmpOZllqkb5d gl7Gpll/WAt+C1RM+rKBtYHxE28XIyeHhICJxOX3Kxm7GLk4hASWMkpcOTyBqYuRAyghJTG/ RQmiRljiz7UuNoiaT4wSPx//YQdJsAkYSvQe7WMEsUUEPCROta5lBbGZBWYwS5yeZQpiCwsk S0x5vp4FxGYRUJWY/fwQG4jNK2Al0XNwBwvEAnmJ1RsOMIPs5RSwljj8Gew2IaCSY/0L2Ccw 8i1gZFjFKJJaWpybnltsqFecmFtcmpeul5yfu4kRGB3bjv3cvIPx0sbgQ4wCHIxKPLwTjv+N E2JNLCuuzD3EKMHBrCTC63T2dJwQb0piZVVqUX58UWlOavEhRlOgmyYyS4km5wMjN68k3tDU 0NzC0tDc2NzYzEJJnLdD4GCMkEB6YklqdmpqQWoRTB8TB6dUA2N3lklPkbbk7ndK+YZPngu1 rdrAxHho9x+Hb1KGVVLh0R2atets/vdc50rL5WlZLX9xwhOpje+m7VE1dF7/8fLEBV22v7JK vrzVfOWW7sp4yfKr3W93nX69ZVsmFvOfvXq1PGZ/+4770Smrf0z/uH6TXca0s2EukrWnpj94 rDiHL2fd/N1GN94osRRnJBpqMRcVJwIA5ng6eKQCAAA= X-CMS-MailID: 20200702163754eucas1p2bbe44897234a3e39dcd10b23e536a927 X-Msg-Generator: CA X-RootMTR: 20200702163754eucas1p2bbe44897234a3e39dcd10b23e536a927 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200702163754eucas1p2bbe44897234a3e39dcd10b23e536a927 References: <20200702163724.2218-1-s.nawrocki@samsung.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch adds registration of a child platform device for the exynos interconnect driver. It is assumed that the interconnect provider will only be needed when #interconnect-cells property is present in the bus DT node, hence the child device will be created only when such a property is present. Signed-off-by: Sylwester Nawrocki Acked-by: Chanwoo Choi --- Changes for v6: - none. Changes for v5: - new patch. --- drivers/devfreq/exynos-bus.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) -- 2.7.4 diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 8fa8eb5..856e37d 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -24,6 +24,7 @@ struct exynos_bus { struct device *dev; + struct platform_device *icc_pdev; struct devfreq *devfreq; struct devfreq_event_dev **edev; @@ -156,6 +157,8 @@ static void exynos_bus_exit(struct device *dev) if (ret < 0) dev_warn(dev, "failed to disable the devfreq-event devices\n"); + platform_device_unregister(bus->icc_pdev); + dev_pm_opp_of_remove_table(dev); clk_disable_unprepare(bus->clk); if (bus->opp_table) { @@ -168,6 +171,8 @@ static void exynos_bus_passive_exit(struct device *dev) { struct exynos_bus *bus = dev_get_drvdata(dev); + platform_device_unregister(bus->icc_pdev); + dev_pm_opp_of_remove_table(dev); clk_disable_unprepare(bus->clk); } @@ -431,6 +436,18 @@ static int exynos_bus_probe(struct platform_device *pdev) if (ret < 0) goto err; + /* Create child platform device for the interconnect provider */ + if (of_get_property(dev->of_node, "#interconnect-cells", NULL)) { + bus->icc_pdev = platform_device_register_data( + dev, "exynos-generic-icc", + PLATFORM_DEVID_AUTO, NULL, 0); + + if (IS_ERR(bus->icc_pdev)) { + ret = PTR_ERR(bus->icc_pdev); + goto err; + } + } + max_state = bus->devfreq->profile->max_state; min_freq = (bus->devfreq->profile->freq_table[0] / 1000); max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000);