Merge tag 'pmdomain-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm

Pull pmdomain updates from Ulf Hansson:
 "pmdomain core:
   - Leave powered-on genpds on until ->sync_state() or late_initcall_sync
   - Export a common ->sync_state() helper for genpd providers
   - Add generic ->sync_state() support
   - Add a bus/driver for genpd provider-devices
   - Introduce dev_pm_genpd_is_on() for consumers

  pmdomain providers:
   - cpuidle-psci: Drop redundant ->sync_state() support
   - cpuidle-riscv-sbi: Drop redundant ->sync_state() support
   - imx: Set ISI panic write for imx8m-blk-ctrl
   - qcom: Add support for Glymur and Milos RPMh power-domains
   - qcom: Use of_genpd_sync_state() for power-domains
   - rockchip: Add support for the RK3528 variant
   - samsung: Fix splash-screen handover by enforcing a ->sync_state()
   - sunxi: Add support for Allwinner A523's PCK600 power-controller
   - tegra: Opt-out from genpd's common ->sync_state() support for pmc
   - thead: Instantiate a GPU power sequencer via the auxiliary bus
   - renesas: Move init to postcore_initcalls
   - xilinx: Move ->sync_state() support to firmware driver
   - xilinx: Use of_genpd_sync_state() for power-domains

  pmdomain consumers:
   - remoteproc: imx_rproc: Fixup the detect/attach procedure for
     pre-booted cores"

* tag 'pmdomain-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (44 commits)
  pmdomain: qcom: rpmhpd: Add Glymur RPMh Power Domains
  dt-bindings: power: rpmpd: Add Glymur power domains
  remoteproc: imx_rproc: detect and attach to pre-booted remote cores
  remoteproc: imx_rproc: skip clock enable when M-core is managed by the SCU
  pmdomain: core: introduce dev_pm_genpd_is_on()
  pmdomain: ti: Select PM_GENERIC_DOMAINS
  pmdomain: sunxi: sun20i-ppu: change to tristate and enable for ARCH_SUNXI
  pmdomain: sunxi: add driver for Allwinner A523's PCK-600 power controller
  pmdomain: sunxi: sun20i-ppu: add A523 support
  pmdomain: samsung: Fix splash-screen handover by enforcing a sync_state
  cpuidle: riscv-sbi: Drop redundant sync_state support
  cpuidle: psci: Drop redundant sync_state support
  pmdomain: core: Leave powered-on genpds on until sync_state
  pmdomain: core: Leave powered-on genpds on until late_initcall_sync
  pmdomain: core: Default to use of_genpd_sync_state() for genpd providers
  driver core: Add dev_set_drv_sync_state()
  pmdomain: core: Add common ->sync_state() support for genpd providers
  driver core: Export get_dev_from_fwnode()
  firmware: xilinx: Use of_genpd_sync_state()
  firmware: xilinx: Don't share zynqmp_pm_init_finalize()
  ...

1 files changed, 23 insertions, 0 deletions

diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 62a35a78ce9b..c84edf217819 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -110,6 +110,11 @@ struct dev_pm_domain_list {
  * GENPD_FLAG_DEV_NAME_FW:	Instructs genpd to generate an unique device name
  *				using ida. It is used by genpd providers which
  *				get their genpd-names directly from FW.
+ *
+ * GENPD_FLAG_NO_SYNC_STATE:	The ->sync_state() support is implemented in a
+ *				genpd provider specific way, likely through a
+ *				parent device node. This flag makes genpd to
+ *				skip its internal support for this.
  */
 #define GENPD_FLAG_PM_CLK	 (1U << 0)
 #define GENPD_FLAG_IRQ_SAFE	 (1U << 1)
@@ -120,6 +125,7 @@ struct dev_pm_domain_list {
 #define GENPD_FLAG_MIN_RESIDENCY (1U << 6)
 #define GENPD_FLAG_OPP_TABLE_FW	 (1U << 7)
 #define GENPD_FLAG_DEV_NAME_FW	 (1U << 8)
+#define GENPD_FLAG_NO_SYNC_STATE (1U << 9)
 
 enum gpd_status {
 	GENPD_STATE_ON = 0,	/* PM domain is on */
@@ -133,6 +139,12 @@ enum genpd_notication {
 	GENPD_NOTIFY_ON,
 };
 
+enum genpd_sync_state {
+	GENPD_SYNC_STATE_OFF = 0,
+	GENPD_SYNC_STATE_SIMPLE,
+	GENPD_SYNC_STATE_ONECELL,
+};
+
 struct dev_power_governor {
 	bool (*power_down_ok)(struct dev_pm_domain *domain);
 	bool (*suspend_ok)(struct device *dev);
@@ -193,6 +205,8 @@ struct generic_pm_domain {
 	unsigned int performance_state;	/* Aggregated max performance state */
 	cpumask_var_t cpus;		/* A cpumask of the attached CPUs */
 	bool synced_poweroff;		/* A consumer needs a synced poweroff */
+	bool stay_on;			/* Stay powered-on during boot. */
+	enum genpd_sync_state sync_state; /* How sync_state is managed. */
 	int (*power_off)(struct generic_pm_domain *domain);
 	int (*power_on)(struct generic_pm_domain *domain);
 	struct raw_notifier_head power_notifiers; /* Power on/off notifiers */
@@ -307,6 +321,7 @@ void dev_pm_genpd_synced_poweroff(struct device *dev);
 int dev_pm_genpd_set_hwmode(struct device *dev, bool enable);
 bool dev_pm_genpd_get_hwmode(struct device *dev);
 int dev_pm_genpd_rpm_always_on(struct device *dev, bool on);
+bool dev_pm_genpd_is_on(struct device *dev);
 
 extern struct dev_power_governor simple_qos_governor;
 extern struct dev_power_governor pm_domain_always_on_gov;
@@ -399,6 +414,11 @@ static inline int dev_pm_genpd_rpm_always_on(struct device *dev, bool on)
 	return -EOPNOTSUPP;
 }
 
+static inline bool dev_pm_genpd_is_on(struct device *dev)
+{
+	return false;
+}
+
 #define simple_qos_governor		(*(struct dev_power_governor *)(NULL))
 #define pm_domain_always_on_gov		(*(struct dev_power_governor *)(NULL))
 #endif
@@ -437,6 +457,7 @@ int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec,
 struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
 int of_genpd_parse_idle_states(struct device_node *dn,
 			       struct genpd_power_state **states, int *n);
+void of_genpd_sync_state(struct device_node *np);
 
 int genpd_dev_pm_attach(struct device *dev);
 struct device *genpd_dev_pm_attach_by_id(struct device *dev,
@@ -482,6 +503,8 @@ static inline int of_genpd_parse_idle_states(struct device_node *dn,
 	return -ENODEV;
 }
 
+static inline void of_genpd_sync_state(struct device_node *np) {}
+
 static inline int genpd_dev_pm_attach(struct device *dev)
 {
 	return 0;