PM / shmobile: Make TMU driver use pm_genpd_dev_always_on()
Rafael J. Wysocki [Tue, 13 Mar 2012 21:40:00 +0000 (22:40 +0100)]
Make the TMU clocksource driver mark its device as "always on"
using pm_genpd_dev_always_on() to protect it from surprise power
removals and make sh7372_add_standard_devices() add TMU devices on
sh7372 to the A4R power domain so that their "always on" flags
are taken into account as appropriate.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: stable@vger.kernel.org

arch/arm/mach-shmobile/setup-sh7372.c
drivers/clocksource/sh_tmu.c

index 6fcf304..9f2d7f2 100644 (file)
@@ -1041,6 +1041,8 @@ void __init sh7372_add_standard_devices(void)
        sh7372_add_device_to_domain(&sh7372_a4r, &veu2_device);
        sh7372_add_device_to_domain(&sh7372_a4r, &veu3_device);
        sh7372_add_device_to_domain(&sh7372_a4r, &jpu_device);
+       sh7372_add_device_to_domain(&sh7372_a4r, &tmu00_device);
+       sh7372_add_device_to_domain(&sh7372_a4r, &tmu01_device);
 }
 
 void __init sh7372_add_early_devices(void)
index 079e96a..97f54b6 100644 (file)
@@ -32,6 +32,7 @@
 #include <linux/sh_timer.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/pm_domain.h>
 
 struct sh_tmu_priv {
        void __iomem *mapbase;
@@ -410,6 +411,9 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev)
        struct sh_tmu_priv *p = platform_get_drvdata(pdev);
        int ret;
 
+       if (!is_early_platform_device(pdev))
+               pm_genpd_dev_always_on(&pdev->dev, true);
+
        if (p) {
                dev_info(&pdev->dev, "kept as earlytimer\n");
                return 0;