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ARM: shmobile: R-Mobile: Use CPG/MSTP Clock Domain attach/detach helpers

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The R-Mobile PM Domain driver manages both power domains and a clock
domain.

The clock domain part is very similar to the CPG/MSTP Clock Domain,
which is used on shmobile SoCs without device power domains, except for
the way how clocks suitable for power management are selected:
  - The former uses the first clock tied to the device through the NULL
    con_id, which is a relic from the legacy pm_clk_notifier-based
    method in drivers/sh/pm_runtime.c,
  - The latter looks for suitable clocks in DT, which is more
    future-proof.

All platforms using this driver are now supported in DT-based ARM
multi-platform builds only, hence switch to using the CPG/MSTP Clock
Domain helpers.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven 2015-08-04 14:28:17 +02:00 committed by Simon Horman
parent e233d74c30
commit 8b98d74780
1 changed files with 3 additions and 32 deletions
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35
arch/arm/mach-shmobile/pm-rmobile.c
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@ -12,6 +12,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/clk/shmobile.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/of.h>
@ -124,36 +125,6 @@ static bool rmobile_pd_active_wakeup(struct device *dev)
return true;
}
static int rmobile_pd_attach_dev(struct generic_pm_domain *domain,
struct device *dev)
{
int error;
error = pm_clk_create(dev);
if (error) {
dev_err(dev, "pm_clk_create failed %d\n", error);
return error;
}
error = pm_clk_add(dev, NULL);
if (error) {
dev_err(dev, "pm_clk_add failed %d\n", error);
goto fail;
}
return 0;
fail:
pm_clk_destroy(dev);
return error;
}
static void rmobile_pd_detach_dev(struct generic_pm_domain *domain,
struct device *dev)
{
pm_clk_destroy(dev);
}
static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
{
struct generic_pm_domain *genpd = &rmobile_pd->genpd;
@ -164,8 +135,8 @@ static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
genpd->dev_ops.active_wakeup = rmobile_pd_active_wakeup;
genpd->power_off = rmobile_pd_power_down;
genpd->power_on = rmobile_pd_power_up;
genpd->attach_dev = rmobile_pd_attach_dev;
genpd->detach_dev = rmobile_pd_detach_dev;
genpd->attach_dev = cpg_mstp_attach_dev;
genpd->detach_dev = cpg_mstp_detach_dev;
__rmobile_pd_power_up(rmobile_pd, false);
}