linux-kernel - [RFC][PATCH 2/5] PM / shmobile: Allow device latencies to be specified directly

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Message-Id: <201207212354.14958.rjw@sisk.pl>
Date:	Sat, 21 Jul 2012 23:54:14 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Linux PM list <linux-pm@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Arnd Bergmann <arnd@...db.de>,
	"Linux-sh list" <linux-sh@...r.kernel.org>,
	Olof Johansson <olof@...om.net>
Subject: [RFC][PATCH 2/5] PM / shmobile: Allow device latencies to be specified directly


Make it possible to specify device start/stop and save/restore
state latencies directy when adding devices to PM domains.  For
this purpose, introduce rmobile_add_device_to_domain_td() whose
third argument is a pointer to a struct gpd_timing_data object
containing device latency data.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 arch/arm/mach-shmobile/include/mach/pm-rmobile.h |   14 ++++++++++++--
 arch/arm/mach-shmobile/pm-rmobile.c              |    7 ++++---
 2 files changed, 16 insertions(+), 5 deletions(-)

Index: linux/arch/arm/mach-shmobile/pm-rmobile.c
===================================================================
--- linux.orig/arch/arm/mach-shmobile/pm-rmobile.c
+++ linux/arch/arm/mach-shmobile/pm-rmobile.c
@@ -152,14 +152,15 @@ static void rmobile_init_pm_domain(struc
 	__rmobile_pd_power_up(rmobile_pd, false);
 }
 
-void rmobile_add_device_to_domain(const char *domain_name,
-				 struct platform_device *pdev)
+void rmobile_add_device_to_domain_td(const char *domain_name,
+				     struct platform_device *pdev,
+				     struct gpd_timing_data *td)
 {
 	struct device *dev = &pdev->dev;
 	int ret;
 
 	do
-		ret = pm_genpd_name_add_device(domain_name, dev);
+		ret = __pm_genpd_name_add_device(domain_name, dev, td);
 	while (ret == -EAGAIN);
 	if (pm_clk_no_clocks(dev))
 		pm_clk_add(dev, NULL);
Index: linux/arch/arm/mach-shmobile/include/mach/pm-rmobile.h
===================================================================
--- linux.orig/arch/arm/mach-shmobile/include/mach/pm-rmobile.h
+++ linux/arch/arm/mach-shmobile/include/mach/pm-rmobile.h
@@ -31,10 +31,20 @@ struct rmobile_pm_domain *to_rmobile_pd(
 
 #ifdef CONFIG_PM
 extern void rmobile_init_domains(struct rmobile_pm_domain domains[], int num);
-extern void rmobile_add_device_to_domain(const char *domain_name,
-					struct platform_device *pdev);
+extern void rmobile_add_device_to_domain_td(const char *domain_name,
+					    struct platform_device *pdev,
+					    struct gpd_timing_data *td);
+
+static inline void rmobile_add_device_to_domain(const char *domain_name,
+						struct platform_device *pdev)
+{
+	rmobile_add_device_to_domain_td(domain_name, pdev, NULL);
+}
+
 #else
+
 #define rmobile_init_domains(domains, num) do { } while (0)
+#define rmobile_add_device_to_domain_td(name, pdev, td) do { } while (0)
 #define rmobile_add_device_to_domain(name, pdev) do { } while (0)
 #endif /* CONFIG_PM */
 

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