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ANDROID: irqchip/irq-gic-v3: Add vendor hook for gic suspend

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This change adds vendor hook for gic suspend syscore ops callback.
And it is invoked during deepsleep and hibernation to store
gic register snapshot.

Bug: 259163247
Change-Id: I4e3729afa4daf18d73e00ee9601b6da72a578b4a
Signed-off-by: Nagireddy Annem <quic_nannem@quicinc.com>
This commit is contained in:
Nagireddy Annem
2022-11-15 09:35:26 +05:30
committed by Todd Kjos
parent b3c4378d24
commit 9d0ccb89bc
4 changed files with 21 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/android/vendor_hooks.c
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@@ -148,6 +148,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mpam_set);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_gic_resume);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_gic_suspend);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_wq_lockup_pool);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ipi_stop);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sysrq_crash);

17
drivers/irqchip/irq-gic-v3.c
View File

@@ -214,10 +214,11 @@ static void gic_do_wait_for_rwp(void __iomem *base, u32 bit)
}
/* Wait for completion of a distributor change */
static void gic_dist_wait_for_rwp(void)
void gic_dist_wait_for_rwp(void)
{
gic_do_wait_for_rwp(gic_data.dist_base, GICD_CTLR_RWP);
}
EXPORT_SYMBOL_GPL(gic_dist_wait_for_rwp);
/* Wait for completion of a redistributor change */
static void gic_redist_wait_for_rwp(void)
@@ -791,7 +792,7 @@ static bool gic_has_group0(void)
return val != 0;
}
static void __init gic_dist_init(void)
void gic_dist_init(void)
{
unsigned int i;
u64 affinity;
@@ -853,6 +854,7 @@ static void __init gic_dist_init(void)
gic_write_irouter(affinity, base + GICD_IROUTERnE + i * 8);
}
}
EXPORT_SYMBOL_GPL(gic_dist_init);
static int gic_iterate_rdists(int (*fn)(struct redist_region *, void __iomem *))
{
@@ -1134,7 +1136,7 @@ static int gic_dist_supports_lpis(void)
!gicv3_nolpi);
}
static void gic_cpu_init(void)
void gic_cpu_init(void)
{
void __iomem *rbase;
int i;
@@ -1161,6 +1163,7 @@ static void gic_cpu_init(void)
/* initialise system registers */
gic_cpu_sys_reg_init();
}
EXPORT_SYMBOL_GPL(gic_cpu_init);
#ifdef CONFIG_SMP
@@ -1363,8 +1366,15 @@ void gic_resume(void)
}
EXPORT_SYMBOL_GPL(gic_resume);
static int gic_suspend(void)
{
trace_android_vh_gic_suspend(&gic_data);
return 0;
}
static struct syscore_ops gic_syscore_ops = {
.resume = gic_resume,
.suspend = gic_suspend,
};
static void gic_syscore_init(void)
@@ -1375,6 +1385,7 @@ static void gic_syscore_init(void)
#else
static inline void gic_syscore_init(void) { }
void gic_resume(void) { }
static int gic_suspend(void) { return 0; }
#endif

3
include/linux/irqchip/arm-gic-v3.h
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@@ -676,6 +676,9 @@ static inline bool gic_enable_sre(void)
#endif
void gic_resume(void);
void gic_dist_init(void);
void gic_cpu_init(void);
void gic_dist_wait_for_rwp(void);
#endif

3
include/trace/hooks/gic_v3.h
View File

@@ -32,6 +32,9 @@ DECLARE_RESTRICTED_HOOK(android_rvh_gic_v3_set_affinity,
DECLARE_HOOK(android_vh_gic_resume,
TP_PROTO(struct gic_chip_data *gd),
TP_ARGS(gd));
DECLARE_HOOK(android_vh_gic_suspend,
TP_PROTO(struct gic_chip_data *gd),
TP_ARGS(gd));
#endif /* _TRACE_HOOK_GIC_V3_H */
/* This part must be outside protection */