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 <anilku...@ti.com> --- 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 d0a66cf..83a1e17 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 <linux/clk.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/pm_runtime.h> #include <linux/can/dev.h> @@ -177,6 +178,9 @@ 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); @@ -198,6 +202,8 @@ 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); @@ -226,6 +232,8 @@ 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 _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss