Merge tag 'pmdomain-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm

Pull pmdomain updates from Ulf Hansson:
 "pmdomain core:
   - Add dev_pm_genpd_rpm_always_on() to support more fine-grained PM

  pmdomain providers:
   - arm: Remove redundant state verification for the SCMI PM domain
   - bcm: Add system-wakeup support for bcm2835 via GENPD_FLAG_ACTIVE_WAKEUP
   - rockchip: Add support for regulators
   - rockchip: Use SMC call to properly inform firmware
   - sunxi: Add V853 ppu support
   - thead: Add support for RISC-V TH1520 power-domains

  firmware:
   - Add support for the AON firmware protocol for RISC-V THEAD

  cpuidle-psci:
   - Update section in MAINTAINERS for cpuidle-psci
   - Add trace support for PSCI domain-idlestates"

* tag 'pmdomain-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (29 commits)
  firmware: thead: add CONFIG_MAILBOX dependency
  firmware: thead,th1520-aon: Fix use after free in th1520_aon_init()
  pmdomain: arm: scmi_pm_domain: Remove redundant state verification
  pmdomain: thead: fix TH1520_AON_PROTOCOL dependency
  pmdomain: thead: Add power-domain driver for TH1520
  dt-bindings: power: Add TH1520 SoC power domains
  firmware: thead: Add AON firmware protocol driver
  dt-bindings: firmware: thead,th1520: Add support for firmware node
  pmdomain: rockchip: add regulator dependency
  pmdomain: rockchip: add regulator support
  pmdomain: rockchip: fix rockchip_pd_power error handling
  pmdomain: rockchip: reduce indentation in rockchip_pd_power
  pmdomain: rockchip: forward rockchip_do_pmu_set_power_domain errors
  pmdomain: rockchip: cleanup mutex handling in rockchip_pd_power
  dt-bindings: power: rockchip: add regulator support
  pmdomain: rockchip: Fix build error
  pmdomain: imx: gpcv2: use proper helper for property detection
  MAINTAINERS: Update section for cpuidle-psci
  pmdomain: rockchip: Check if SMC could be handled by TA
  cpuidle: psci: Add trace for PSCI domain idle
  ...

2 files changed, 207 insertions, 0 deletions

diff --git a/include/linux/firmware/thead/thead,th1520-aon.h b/include/linux/firmware/thead/thead,th1520-aon.h
new file mode 100644
index 000000000000..dae132b66873
--- /dev/null
+++ b/include/linux/firmware/thead/thead,th1520-aon.h
@@ -0,0 +1,200 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 Alibaba Group Holding Limited.
+ */
+
+#ifndef _THEAD_AON_H
+#define _THEAD_AON_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+
+#define AON_RPC_MSG_MAGIC (0xef)
+#define TH1520_AON_RPC_VERSION 2
+#define TH1520_AON_RPC_MSG_NUM 7
+
+struct th1520_aon_chan;
+
+enum th1520_aon_rpc_svc {
+	TH1520_AON_RPC_SVC_UNKNOWN = 0,
+	TH1520_AON_RPC_SVC_PM = 1,
+	TH1520_AON_RPC_SVC_MISC = 2,
+	TH1520_AON_RPC_SVC_AVFS = 3,
+	TH1520_AON_RPC_SVC_SYS = 4,
+	TH1520_AON_RPC_SVC_WDG = 5,
+	TH1520_AON_RPC_SVC_LPM = 6,
+	TH1520_AON_RPC_SVC_MAX = 0x3F,
+};
+
+enum th1520_aon_misc_func {
+	TH1520_AON_MISC_FUNC_UNKNOWN = 0,
+	TH1520_AON_MISC_FUNC_SET_CONTROL = 1,
+	TH1520_AON_MISC_FUNC_GET_CONTROL = 2,
+	TH1520_AON_MISC_FUNC_REGDUMP_CFG = 3,
+};
+
+enum th1520_aon_wdg_func {
+	TH1520_AON_WDG_FUNC_UNKNOWN = 0,
+	TH1520_AON_WDG_FUNC_START = 1,
+	TH1520_AON_WDG_FUNC_STOP = 2,
+	TH1520_AON_WDG_FUNC_PING = 3,
+	TH1520_AON_WDG_FUNC_TIMEOUTSET = 4,
+	TH1520_AON_WDG_FUNC_RESTART = 5,
+	TH1520_AON_WDG_FUNC_GET_STATE = 6,
+	TH1520_AON_WDG_FUNC_POWER_OFF = 7,
+	TH1520_AON_WDG_FUNC_AON_WDT_ON = 8,
+	TH1520_AON_WDG_FUNC_AON_WDT_OFF = 9,
+};
+
+enum th1520_aon_sys_func {
+	TH1520_AON_SYS_FUNC_UNKNOWN = 0,
+	TH1520_AON_SYS_FUNC_AON_RESERVE_MEM = 1,
+};
+
+enum th1520_aon_lpm_func {
+	TH1520_AON_LPM_FUNC_UNKNOWN = 0,
+	TH1520_AON_LPM_FUNC_REQUIRE_STR = 1,
+	TH1520_AON_LPM_FUNC_RESUME_STR = 2,
+	TH1520_AON_LPM_FUNC_REQUIRE_STD = 3,
+	TH1520_AON_LPM_FUNC_CPUHP = 4,
+	TH1520_AON_LPM_FUNC_REGDUMP_CFG = 5,
+};
+
+enum th1520_aon_pm_func {
+	TH1520_AON_PM_FUNC_UNKNOWN = 0,
+	TH1520_AON_PM_FUNC_SET_RESOURCE_REGULATOR = 1,
+	TH1520_AON_PM_FUNC_GET_RESOURCE_REGULATOR = 2,
+	TH1520_AON_PM_FUNC_SET_RESOURCE_POWER_MODE = 3,
+	TH1520_AON_PM_FUNC_PWR_SET = 4,
+	TH1520_AON_PM_FUNC_PWR_GET = 5,
+	TH1520_AON_PM_FUNC_CHECK_FAULT = 6,
+	TH1520_AON_PM_FUNC_GET_TEMPERATURE = 7,
+};
+
+struct th1520_aon_rpc_msg_hdr {
+	u8 ver; /* version of msg hdr */
+	u8 size; /*  msg size ,uinit in bytes,the size includes rpc msg header self */
+	u8 svc; /* rpc main service id */
+	u8 func; /* rpc sub func id of specific service, sent by caller */
+} __packed __aligned(1);
+
+struct th1520_aon_rpc_ack_common {
+	struct th1520_aon_rpc_msg_hdr hdr;
+	u8 err_code;
+} __packed __aligned(1);
+
+#define RPC_SVC_MSG_TYPE_DATA 0
+#define RPC_SVC_MSG_TYPE_ACK 1
+#define RPC_SVC_MSG_NEED_ACK 0
+#define RPC_SVC_MSG_NO_NEED_ACK 1
+
+#define RPC_GET_VER(MESG) ((MESG)->ver)
+#define RPC_SET_VER(MESG, VER) ((MESG)->ver = (VER))
+#define RPC_GET_SVC_ID(MESG) ((MESG)->svc & 0x3F)
+#define RPC_SET_SVC_ID(MESG, ID) ((MESG)->svc |= 0x3F & (ID))
+#define RPC_GET_SVC_FLAG_MSG_TYPE(MESG) (((MESG)->svc & 0x80) >> 7)
+#define RPC_SET_SVC_FLAG_MSG_TYPE(MESG, TYPE) ((MESG)->svc |= (TYPE) << 7)
+#define RPC_GET_SVC_FLAG_ACK_TYPE(MESG) (((MESG)->svc & 0x40) >> 6)
+#define RPC_SET_SVC_FLAG_ACK_TYPE(MESG, ACK) ((MESG)->svc |= (ACK) << 6)
+
+#define RPC_SET_BE64(MESG, OFFSET, SET_DATA)                                \
+	do {                                                                \
+		u8 *data = (u8 *)(MESG);                                    \
+		u64 _offset = (OFFSET);                                     \
+		u64 _set_data = (SET_DATA);                                 \
+		data[_offset + 7] = _set_data & 0xFF;                       \
+		data[_offset + 6] = (_set_data & 0xFF00) >> 8;              \
+		data[_offset + 5] = (_set_data & 0xFF0000) >> 16;           \
+		data[_offset + 4] = (_set_data & 0xFF000000) >> 24;         \
+		data[_offset + 3] = (_set_data & 0xFF00000000) >> 32;       \
+		data[_offset + 2] = (_set_data & 0xFF0000000000) >> 40;     \
+		data[_offset + 1] = (_set_data & 0xFF000000000000) >> 48;   \
+		data[_offset + 0] = (_set_data & 0xFF00000000000000) >> 56; \
+	} while (0)
+
+#define RPC_SET_BE32(MESG, OFFSET, SET_DATA)			    \
+	do {							    \
+		u8 *data = (u8 *)(MESG);			    \
+		u64 _offset = (OFFSET);				    \
+		u64 _set_data = (SET_DATA);			    \
+		data[_offset + 3] = (_set_data) & 0xFF;		    \
+		data[_offset + 2] = (_set_data & 0xFF00) >> 8;	    \
+		data[_offset + 1] = (_set_data & 0xFF0000) >> 16;   \
+		data[_offset + 0] = (_set_data & 0xFF000000) >> 24; \
+	} while (0)
+
+#define RPC_SET_BE16(MESG, OFFSET, SET_DATA)		       \
+	do {						       \
+		u8 *data = (u8 *)(MESG);		       \
+		u64 _offset = (OFFSET);			       \
+		u64 _set_data = (SET_DATA);		       \
+		data[_offset + 1] = (_set_data) & 0xFF;	       \
+		data[_offset + 0] = (_set_data & 0xFF00) >> 8; \
+	} while (0)
+
+#define RPC_SET_U8(MESG, OFFSET, SET_DATA)	  \
+	do {					  \
+		u8 *data = (u8 *)(MESG);	  \
+		data[OFFSET] = (SET_DATA) & 0xFF; \
+	} while (0)
+
+#define RPC_GET_BE64(MESG, OFFSET, PTR)                                      \
+	do {                                                                 \
+		u8 *data = (u8 *)(MESG);                                     \
+		u64 _offset = (OFFSET);                                      \
+		*(u32 *)(PTR) =                                              \
+			(data[_offset + 7] | data[_offset + 6] << 8 |        \
+			 data[_offset + 5] << 16 | data[_offset + 4] << 24 | \
+			 data[_offset + 3] << 32 | data[_offset + 2] << 40 | \
+			 data[_offset + 1] << 48 | data[_offset + 0] << 56); \
+	} while (0)
+
+#define RPC_GET_BE32(MESG, OFFSET, PTR)                                      \
+	do {                                                                 \
+		u8 *data = (u8 *)(MESG);                                     \
+		u64 _offset = (OFFSET);                                      \
+		*(u32 *)(PTR) =                                              \
+			(data[_offset + 3] | data[_offset + 2] << 8 |        \
+			 data[_offset + 1] << 16 | data[_offset + 0] << 24); \
+	} while (0)
+
+#define RPC_GET_BE16(MESG, OFFSET, PTR)                                       \
+	do {                                                                  \
+		u8 *data = (u8 *)(MESG);                                      \
+		u64 _offset = (OFFSET);                                       \
+		*(u16 *)(PTR) = (data[_offset + 1] | data[_offset + 0] << 8); \
+	} while (0)
+
+#define RPC_GET_U8(MESG, OFFSET, PTR)          \
+	do {                                   \
+		u8 *data = (u8 *)(MESG);       \
+		*(u8 *)(PTR) = (data[OFFSET]); \
+	} while (0)
+
+/*
+ * Defines for SC PM Power Mode
+ */
+#define TH1520_AON_PM_PW_MODE_OFF 0 /* Power off */
+#define TH1520_AON_PM_PW_MODE_STBY 1 /* Power in standby */
+#define TH1520_AON_PM_PW_MODE_LP 2 /* Power in low-power */
+#define TH1520_AON_PM_PW_MODE_ON 3 /* Power on */
+
+/*
+ * Defines for AON power islands
+ */
+#define TH1520_AON_AUDIO_PD 0
+#define TH1520_AON_VDEC_PD 1
+#define TH1520_AON_NPU_PD 2
+#define TH1520_AON_VENC_PD 3
+#define TH1520_AON_GPU_PD 4
+#define TH1520_AON_DSP0_PD 5
+#define TH1520_AON_DSP1_PD 6
+
+struct th1520_aon_chan *th1520_aon_init(struct device *dev);
+void th1520_aon_deinit(struct th1520_aon_chan *aon_chan);
+
+int th1520_aon_call_rpc(struct th1520_aon_chan *aon_chan, void *msg);
+int th1520_aon_power_update(struct th1520_aon_chan *aon_chan, u16 rsrc,
+			    bool power_on);
+
+#endif /* _THEAD_AON_H */
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 1aab31370065..d56a78af4af1 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -261,6 +261,7 @@ struct generic_pm_domain_data {
 	unsigned int rpm_pstate;
 	unsigned int opp_token;
 	bool hw_mode;
+	bool rpm_always_on;
 	void *data;
 };
 
@@ -293,6 +294,7 @@ ktime_t dev_pm_genpd_get_next_hrtimer(struct device *dev);
 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);
 
 extern struct dev_power_governor simple_qos_governor;
 extern struct dev_power_governor pm_domain_always_on_gov;
@@ -376,6 +378,11 @@ static inline bool dev_pm_genpd_get_hwmode(struct device *dev)
 	return false;
 }
 
+static inline int dev_pm_genpd_rpm_always_on(struct device *dev, bool on)
+{
+	return -EOPNOTSUPP;
+}
+
 #define simple_qos_governor		(*(struct dev_power_governor *)(NULL))
 #define pm_domain_always_on_gov		(*(struct dev_power_governor *)(NULL))
 #endif