imx: add wakeup source SIP runtime service support
On i.MX8QM/i.MX8QX with system controller inside, the wakeup
source is managed in SCFW(system controller firmware), if the
wakeup source is belonged to system controller partition, then
before Linux suspend, the wakeup source should be set to
SC_PM_WAKE_SRC_SCU, and if the wakeup source is belonged to
Cortex-A partition, the wakeup source should be set to
SC_PM_WAKE_SRC_IRQSTEER, so need to add wakeup source SIP runtime
service to get Linux kernel's wakeup source and set the correct
wakeup source for system controller.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
diff --git a/plat/imx/common/imx_sip_handler.c b/plat/imx/common/imx_sip_handler.c
index 22a7f2b..2e50cf3 100644
--- a/plat/imx/common/imx_sip_handler.c
+++ b/plat/imx/common/imx_sip_handler.c
@@ -76,3 +76,29 @@
return 0;
}
+
+static bool wakeup_src_irqsteer;
+
+bool imx_is_wakeup_src_irqsteer(void)
+{
+ return wakeup_src_irqsteer;
+}
+
+int imx_wakeup_src_handler(uint32_t smc_fid,
+ u_register_t x1,
+ u_register_t x2,
+ u_register_t x3)
+{
+ switch (x1) {
+ case IMX_SIP_WAKEUP_SRC_IRQSTEER:
+ wakeup_src_irqsteer = true;
+ break;
+ case IMX_SIP_WAKEUP_SRC_SCU:
+ wakeup_src_irqsteer = false;
+ break;
+ default:
+ return SMC_UNK;
+ }
+
+ return SMC_OK;
+}