ARM: shmobile: r8a7740: add A3SP pm domain support
This patch adds basic A3SP pm domain support.
Now, below devices can be controled by PM
DMAC1/2/3, IPMMU, DDM, FLCTL, SYS-HPB, BBIF1, MSIOF1/2,
SCIFA,SCIFB, IIC1, IrDA, USBH, USBDMAC, SDHI0/1/2, TPU,
DREQPAK (Sys), MMCIF, RSPI, SIM, USBF
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/arch/arm/mach-shmobile/pm-r8a7740.c b/arch/arm/mach-shmobile/pm-r8a7740.c
index d2fe815..de7c621 100644
--- a/arch/arm/mach-shmobile/pm-r8a7740.c
+++ b/arch/arm/mach-shmobile/pm-r8a7740.c
@@ -8,6 +8,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
+#include <linux/console.h>
#include <mach/pm-rmobile.h>
#ifdef CONFIG_PM
@@ -27,4 +28,22 @@
.no_debug = true,
.suspend = r8a7740_pd_a4s_suspend,
};
+
+static int r8a7740_pd_a3sp_suspend(void)
+{
+ /*
+ * Serial consoles make use of SCIF hardware located in A3SP,
+ * keep such power domain on if "no_console_suspend" is set.
+ */
+ return console_suspend_enabled ? 0 : -EBUSY;
+}
+
+struct rmobile_pm_domain r8a7740_pd_a3sp = {
+ .genpd.name = "A3SP",
+ .bit_shift = 11,
+ .gov = &pm_domain_always_on_gov,
+ .no_debug = true,
+ .suspend = r8a7740_pd_a3sp_suspend,
+};
+
#endif /* CONFIG_PM */