Modules that provide resources for other modules need to be suspended
and resumed in the noirq calls. Tag the resource providing modules.
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
drivers/bus/ti-sysc.c | 77 +++++++++++++++++++++++++++
include/linux/platform_data/ti-sysc.h | 1 +
2 files changed, 78 insertions(+)
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -665,6 +665,10 @@ static int sysc_suspend(struct device *dev)
ddata = dev_get_drvdata(dev);
+ if (ddata->cfg.quirks & (SYSC_QUIRK_RESOURCE_PROVIDER |
+ SYSC_QUIRK_LEGACY_IDLE))
+ return 0;
+
if (!ddata->enabled)
return 0;
@@ -678,6 +682,58 @@ static int sysc_resume(struct device *dev)
struct sysc *ddata;
ddata = dev_get_drvdata(dev);
+
+ if (ddata->cfg.quirks & (SYSC_QUIRK_RESOURCE_PROVIDER |
+ SYSC_QUIRK_LEGACY_IDLE))
+ return 0;
+
+ if (ddata->needs_resume) {
+ dev_dbg(ddata->dev, "%s %s\n", __func__,
+ ddata->name ? ddata->name : "");
+
+ ddata->needs_resume = false;
+
+ return sysc_runtime_resume(dev);
+ }
+
+ return 0;
+}
+
+static int sysc_noirq_suspend(struct device *dev)
+{
+ struct sysc *ddata;
+
+ ddata = dev_get_drvdata(dev);
+
+ if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+ return 0;
+
+ if (!(ddata->cfg.quirks & SYSC_QUIRK_RESOURCE_PROVIDER))
+ return 0;
+
+ if (!ddata->enabled)
+ return 0;
+
+ dev_dbg(ddata->dev, "%s %s\n", __func__,
+ ddata->name ? ddata->name : "");
+
+ ddata->needs_resume = true;
+
+ return sysc_runtime_suspend(dev);
+}
+
+static int sysc_noirq_resume(struct device *dev)
+{
+ struct sysc *ddata;
+
+ ddata = dev_get_drvdata(dev);
+
+ if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+ return 0;
+
+ if (!(ddata->cfg.quirks & SYSC_QUIRK_RESOURCE_PROVIDER))
+ return 0;
+
if (ddata->needs_resume) {
ddata->needs_resume = false;
@@ -690,6 +746,7 @@ static int sysc_resume(struct device *dev)
static const struct dev_pm_ops sysc_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(sysc_suspend, sysc_resume)
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_noirq_suspend, sysc_noirq_resume)
SET_RUNTIME_PM_OPS(sysc_runtime_suspend,
sysc_runtime_resume,
NULL)
@@ -721,6 +778,26 @@ struct sysc_revision_quirk {
}
static const struct sysc_revision_quirk sysc_revision_quirks[] = {
+ /* These need to use noirq_suspend */
+ SYSC_QUIRK("control", 0, 0, 0x10, -1, 0x40000900, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("i2c", 0, 0, 0x10, 0x90, 0x5040000a, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("mcspi", 0, 0, 0x10, -1, 0x40300a0b, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("prcm", 0, 0, -1, -1, 0x40000100, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("ocp2scp", 0, 0, 0x10, 0x14, 0x50060005, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("padconf", 0, 0, 0x10, -1, 0x4fff0800, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("scm", 0, 0, 0x10, -1, 0x40000900, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("scrm", 0, 0, -1, -1, 0x00000010, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+ SYSC_QUIRK("sdma", 0, 0, 0x2c, 0x28, 0x00010900, 0xffffffff,
+ SYSC_QUIRK_RESOURCE_PROVIDER),
+
/* These drivers need to be fixed to not use pm_runtime_irq_safe() */
SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffffffff,
SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_OPT_CLKS_IN_RESET),
diff --git a/include/linux/platform_data/ti-sysc.h b/include/linux/platform_data/ti-sysc.h
--- a/include/linux/platform_data/ti-sysc.h
+++ b/include/linux/platform_data/ti-sysc.h
@@ -45,6 +45,7 @@ struct sysc_regbits {
s8 emufree_shift;
};
+#define SYSC_QUIRK_RESOURCE_PROVIDER BIT(9)
#define SYSC_QUIRK_LEGACY_IDLE BIT(8)
#define SYSC_QUIRK_RESET_STATUS BIT(7)
#define SYSC_QUIRK_NO_IDLE_ON_INIT BIT(6)
--
2.17.0
--
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