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Mon, 9 Sep 2019 14:12:30 +0000 From: To: , , , , , CC: , , Subject: [PATCH v2 2/2] staging: wilc1000: look for rtc_clk clock Thread-Topic: [PATCH v2 2/2] staging: wilc1000: look for rtc_clk clock Thread-Index: AQHVZxidJg0uPq4NhUukllBtOHKh4Q== Date: Mon, 9 Sep 2019 14:12:29 +0000 Message-ID: <1568037993-4646-2-git-send-email-eugen.hristev@microchip.com> References: <1568037993-4646-1-git-send-email-eugen.hristev@microchip.com> In-Reply-To: <1568037993-4646-1-git-send-email-eugen.hristev@microchip.com> Accept-Language: en-US, ro-RO Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR09CA0080.eurprd09.prod.outlook.com (2603:10a6:802:29::24) To DM5PR11MB1242.namprd11.prod.outlook.com (2603:10b6:3:14::8) x-mailer: git-send-email 2.7.4 x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [94.177.32.156] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 1e9d70e2-9e4f-422f-c910-08d7352fbfdf x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600166)(711020)(4605104)(1401327)(2017052603328)(7193020);SRVR:DM5PR11MB1596; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 1e9d70e2-9e4f-422f-c910-08d7352fbfdf X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Sep 2019 14:12:29.9551 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: psCpZW6xuXP7OZ/zrAyuTeNtxyv+YMTYi1w56B200aEmKSmFK+PWXtAnapcjL0MgWt9+X50DIT07m4siV7xsiy9vs/V9jZ352PreOXzwUPk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR11MB1596 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Eugen Hristev If rtc_clk is provided from DT, use it and enable it. This is optional. The signal may be hardcoded and no need to be requested, but if DT provides it, use it. Signed-off-by: Eugen Hristev Acked-by: Ajay Singh --- Changes in v2: - rebased on staging-next drivers/staging/wilc1000/wilc_sdio.c | 14 ++++++++++++++ drivers/staging/wilc1000/wilc_wfi_netdevice.h | 1 + 2 files changed, 15 insertions(+) diff --git a/drivers/staging/wilc1000/wilc_sdio.c b/drivers/staging/wilc100= 0/wilc_sdio.c index 2f9aa36..c787c5d 100644 --- a/drivers/staging/wilc1000/wilc_sdio.c +++ b/drivers/staging/wilc1000/wilc_sdio.c @@ -4,6 +4,7 @@ * All rights reserved. */ =20 +#include #include #include =20 @@ -151,6 +152,12 @@ static int wilc_sdio_probe(struct sdio_func *func, wilc->dev =3D &func->dev; wilc->gpio_irq =3D gpio; =20 + wilc->rtc_clk =3D devm_clk_get(&func->card->dev, "rtc_clk"); + if (PTR_ERR_OR_ZERO(wilc->rtc_clk) =3D=3D -EPROBE_DEFER) + return -EPROBE_DEFER; + else if (!IS_ERR(wilc->rtc_clk)) + clk_prepare_enable(wilc->rtc_clk); + dev_info(&func->dev, "Driver Initializing success\n"); return 0; } @@ -162,6 +169,10 @@ static void wilc_sdio_remove(struct sdio_func *func) /* free the GPIO in module remove */ if (wilc->gpio_irq) gpiod_put(wilc->gpio_irq); + + if (!IS_ERR(wilc->rtc_clk)) + clk_disable_unprepare(wilc->rtc_clk); + wilc_netdev_cleanup(wilc); } =20 @@ -193,6 +204,9 @@ static int wilc_sdio_suspend(struct device *dev) dev_info(dev, "sdio suspend\n"); chip_wakeup(wilc); =20 + if (!IS_ERR(wilc->rtc_clk)) + clk_disable_unprepare(wilc->rtc_clk); + if (wilc->suspend_event) { host_sleep_notify(wilc); chip_allow_sleep(wilc); diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/stagin= g/wilc1000/wilc_wfi_netdevice.h index 7e7ce94..978a8bd 100644 --- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h +++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h @@ -216,6 +216,7 @@ struct wilc { int io_type; s8 mac_status; struct gpio_desc *gpio_irq; + struct clk *rtc_clk; bool initialized; int dev_irq_num; int close; --=20 2.7.4