Merge "feat(ti): implement DM_MANAGED suspend" into integration
diff --git a/plat/ti/k3/common/drivers/ti_sci/ti_sci.c b/plat/ti/k3/common/drivers/ti_sci/ti_sci.c
index 8b77050..5c6ba6b 100644
--- a/plat/ti/k3/common/drivers/ti_sci/ti_sci.c
+++ b/plat/ti/k3/common/drivers/ti_sci/ti_sci.c
@@ -1740,3 +1740,41 @@
return 0;
}
+
+/**
+ * ti_sci_lpm_get_next_sys_mode() - Get next LPM system mode
+ *
+ * @next_mode: pointer to a variable that will store the next mode
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int ti_sci_lpm_get_next_sys_mode(uint8_t *next_mode)
+{
+ struct ti_sci_msg_req_lpm_get_next_sys_mode req;
+ struct ti_sci_msg_resp_lpm_get_next_sys_mode resp;
+ struct ti_sci_xfer xfer;
+ int ret;
+
+ if (next_mode == NULL) {
+ return -EINVAL;
+ }
+
+ ret = ti_sci_setup_one_xfer(TI_SCI_MSG_LPM_GET_NEXT_SYS_MODE, 0,
+ &req, sizeof(req),
+ &resp, sizeof(resp),
+ &xfer);
+ if (ret != 0) {
+ ERROR("Message alloc failed (%d)\n", ret);
+ return ret;
+ }
+
+ ret = ti_sci_do_xfer(&xfer);
+ if (ret != 0) {
+ ERROR("Transfer send failed (%d)\n", ret);
+ return ret;
+ }
+
+ *next_mode = resp.mode;
+
+ return 0;
+}
diff --git a/plat/ti/k3/common/drivers/ti_sci/ti_sci.h b/plat/ti/k3/common/drivers/ti_sci/ti_sci.h
index acaca4d..06d1f8d 100644
--- a/plat/ti/k3/common/drivers/ti_sci/ti_sci.h
+++ b/plat/ti/k3/common/drivers/ti_sci/ti_sci.h
@@ -252,6 +252,11 @@
* @mode: Low power mode to enter.
* @core_resume_addr: Address that core should be resumed from
* after low power transition.
+ * - ti_sci_lpm_get_next_sys_mode - Get next LPM system mode
+ *
+ * @next_mode: pointer to a variable that will store the next mode
+ *
+ * Return: 0 if all goes well, else appropriate error message
*
* NOTE: for all these functions, the following are generic in nature:
* Returns 0 for successful request, else returns corresponding error message.
@@ -259,5 +264,6 @@
int ti_sci_enter_sleep(uint8_t proc_id,
uint8_t mode,
uint64_t core_resume_addr);
+int ti_sci_lpm_get_next_sys_mode(uint8_t *next_mode);
#endif /* TI_SCI_H */
diff --git a/plat/ti/k3/common/drivers/ti_sci/ti_sci_protocol.h b/plat/ti/k3/common/drivers/ti_sci/ti_sci_protocol.h
index 7f1c368..cc71eac 100644
--- a/plat/ti/k3/common/drivers/ti_sci/ti_sci_protocol.h
+++ b/plat/ti/k3/common/drivers/ti_sci/ti_sci_protocol.h
@@ -31,6 +31,7 @@
/* Low Power Mode Requests */
#define TI_SCI_MSG_ENTER_SLEEP 0x0301
+#define TI_SCI_MSG_LPM_GET_NEXT_SYS_MODE 0x030d
/* Clock requests */
#define TI_SCI_MSG_SET_CLOCK_STATE 0x0100
@@ -133,6 +134,7 @@
* MSG_FLAG_CAPS_LPM_MCU_ONLY: MCU only LPM
* MSG_FLAG_CAPS_LPM_STANDBY: Standby LPM
* MSG_FLAG_CAPS_LPM_PARTIAL_IO: Partial IO in LPM
+ * MSG_FLAG_CAPS_LPM_DM_MANAGED: LPM can be managed by DM
*
* Response to a generic message with message type TI_SCI_MSG_QUERY_FW_CAPS
* providing currently available SOC/firmware capabilities. SoC that don't
@@ -145,6 +147,7 @@
#define MSG_FLAG_CAPS_LPM_MCU_ONLY TI_SCI_MSG_FLAG(2)
#define MSG_FLAG_CAPS_LPM_STANDBY TI_SCI_MSG_FLAG(3)
#define MSG_FLAG_CAPS_LPM_PARTIAL_IO TI_SCI_MSG_FLAG(4)
+#define MSG_FLAG_CAPS_LPM_DM_MANAGED TI_SCI_MSG_FLAG(5)
uint64_t fw_caps;
} __packed;
@@ -764,10 +767,35 @@
*/
struct ti_sci_msg_req_enter_sleep {
struct ti_sci_msg_hdr hdr;
+#define MSG_VALUE_SLEEP_MODE_DEEP_SLEEP 0x0
uint8_t mode;
uint8_t processor_id;
uint32_t core_resume_lo;
uint32_t core_resume_hi;
} __packed;
+/**
+ * struct ti_sci_msg_req_lpm_get_next_sys_mode - Request for TI_SCI_MSG_LPM_GET_NEXT_SYS_MODE.
+ *
+ * @hdr Generic Header
+ *
+ * This message is used to enquire DM for selected system wide low power mode.
+ */
+struct ti_sci_msg_req_lpm_get_next_sys_mode {
+ struct ti_sci_msg_hdr hdr;
+} __packed;
+
+/**
+ * struct ti_sci_msg_resp_lpm_get_next_sys_mode - Response for TI_SCI_MSG_LPM_GET_NEXT_SYS_MODE.
+ *
+ * @hdr Generic Header
+ * @mode The selected system wide low power mode.
+ *
+ * Note: If the mode selection is not yet locked, this API returns "not selected" mode.
+ */
+struct ti_sci_msg_resp_lpm_get_next_sys_mode {
+ struct ti_sci_msg_hdr hdr;
+ uint8_t mode;
+} __packed;
+
#endif /* TI_SCI_PROTOCOL_H */
diff --git a/plat/ti/k3/common/k3_psci.c b/plat/ti/k3/common/k3_psci.c
index e8d73db..df49f48 100644
--- a/plat/ti/k3/common/k3_psci.c
+++ b/plat/ti/k3/common/k3_psci.c
@@ -234,7 +234,7 @@
return PSCI_E_SUCCESS;
}
-static void k3_pwr_domain_suspend(const psci_power_state_t *target_state)
+static void k3_pwr_domain_suspend_to_mode(const psci_power_state_t *target_state, uint8_t mode)
{
unsigned int core, proc_id;
@@ -247,7 +247,25 @@
k3_pwr_domain_off(target_state);
+ ti_sci_enter_sleep(proc_id, mode, k3_sec_entrypoint);
+}
+
+static void k3_pwr_domain_suspend_dm_managed(const psci_power_state_t *target_state)
+{
+ uint8_t mode = MSG_VALUE_SLEEP_MODE_DEEP_SLEEP;
+ int ret;
+
- ti_sci_enter_sleep(proc_id, 0, k3_sec_entrypoint);
+ ret = ti_sci_lpm_get_next_sys_mode(&mode);
+ if (ret != 0) {
+ ERROR("Failed to fetch next system mode\n");
+ }
+
+ k3_pwr_domain_suspend_to_mode(target_state, mode);
+}
+
+static void k3_pwr_domain_suspend(const psci_power_state_t *target_state)
+{
+ k3_pwr_domain_suspend_to_mode(target_state, MSG_VALUE_SLEEP_MODE_DEEP_SLEEP);
}
static void k3_pwr_domain_suspend_finish(const psci_power_state_t *target_state)
@@ -301,6 +319,8 @@
k3_plat_psci_ops.pwr_domain_suspend = NULL;
k3_plat_psci_ops.pwr_domain_suspend_finish = NULL;
k3_plat_psci_ops.get_sys_suspend_power_state = NULL;
+ } else if (fw_caps & MSG_FLAG_CAPS_LPM_DM_MANAGED) {
+ k3_plat_psci_ops.pwr_domain_suspend = k3_pwr_domain_suspend_dm_managed;
}
*psci_ops = &k3_plat_psci_ops;