From mboxrd@z Thu Jan 1 00:00:00 1970 From: AnilKumar Ch Subject: [PATCH 4/4] can: c_can: Add runtime PM support to Bosch C_CAN/D_CAN controller Date: Wed, 25 Jul 2012 11:53:37 +0530 Message-ID: <1343197417-27481-5-git-send-email-anilkumar@ti.com> References: <1343197417-27481-1-git-send-email-anilkumar@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:53851 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932767Ab2GYGYJ (ORCPT ); Wed, 25 Jul 2012 02:24:09 -0400 In-Reply-To: <1343197417-27481-1-git-send-email-anilkumar@ti.com> Sender: linux-can-owner@vger.kernel.org List-ID: To: wg@grandegger.com, mkl@pengutronix.de, linux-can@vger.kernel.org Cc: anantgole@ti.com, nsekhar@ti.com, AnilKumar Ch Add Runtime PM support to C_CAN/D_CAN controller. The runtime PM APIs control clocks for C_CAN/D_CAN IP and prevent access to the register of C_CAN/D_CAN IP when clock is turned off. Signed-off-by: AnilKumar Ch --- drivers/net/can/c_can/c_can_platform.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c index 2f5b153..f0dc912 100644 --- a/drivers/net/can/c_can/c_can_platform.c +++ b/drivers/net/can/c_can/c_can_platform.c @@ -32,6 +32,7 @@ #include #include #include +#include #include @@ -176,6 +177,9 @@ static int __devinit c_can_plat_probe(struct platform_device *pdev) goto exit_free_device; } + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); + dev->irq = irq; priv->base = addr; priv->can.clock.freq = clk_get_rate(clk); @@ -197,6 +201,8 @@ static int __devinit c_can_plat_probe(struct platform_device *pdev) exit_free_device: platform_set_drvdata(pdev, NULL); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); free_c_can_dev(dev); exit_iounmap: iounmap(addr); @@ -225,6 +231,8 @@ static int __devexit c_can_plat_remove(struct platform_device *pdev) mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(mem->start, resource_size(mem)); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); clk_put(priv->priv); return 0; -- 1.7.9.5