diff options
Diffstat (limited to 'common/usbc/usb_pd_dpm.c')
| -rw-r--r-- | common/usbc/usb_pd_dpm.c | 704 |
1 files changed, 0 insertions, 704 deletions
diff --git a/common/usbc/usb_pd_dpm.c b/common/usbc/usb_pd_dpm.c deleted file mode 100644 index eb2dfc52c0..0000000000 --- a/common/usbc/usb_pd_dpm.c +++ /dev/null @@ -1,704 +0,0 @@ -/* Copyright 2020 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* - * Device Policy Manager implementation - * Refer to USB PD 3.0 spec, version 2.0, sections 8.2 and 8.3 - */ - -#include "charge_state.h" -#include "compile_time_macros.h" -#include "console.h" -#include "ec_commands.h" -#include "hooks.h" -#include "system.h" -#include "task.h" -#include "tcpm/tcpm.h" -#include "usb_dp_alt_mode.h" -#include "usb_mode.h" -#include "usb_pd.h" -#include "usb_pd_dpm.h" -#include "usb_pd_tcpm.h" -#include "usb_tbt_alt_mode.h" - -#ifdef CONFIG_COMMON_RUNTIME -#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args) -#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args) -#else -#define CPRINTF(format, args...) -#define CPRINTS(format, args...) -#endif - -/* Max Attention length is header + 1 VDO */ -#define DPM_ATTENION_MAX_VDO 2 - -static struct { - uint32_t flags; - uint32_t vdm_attention[DPM_ATTENION_MAX_VDO]; - int vdm_cnt; - mutex_t vdm_attention_mutex; -} dpm[CONFIG_USB_PD_PORT_MAX_COUNT]; - -#define DPM_SET_FLAG(port, flag) atomic_or(&dpm[(port)].flags, (flag)) -#define DPM_CLR_FLAG(port, flag) atomic_clear_bits(&dpm[(port)].flags, (flag)) -#define DPM_CHK_FLAG(port, flag) (dpm[(port)].flags & (flag)) - -/* Flags for internal DPM state */ -#define DPM_FLAG_MODE_ENTRY_DONE BIT(0) -#define DPM_FLAG_EXIT_REQUEST BIT(1) -#define DPM_FLAG_ENTER_DP BIT(2) -#define DPM_FLAG_ENTER_TBT BIT(3) -#define DPM_FLAG_ENTER_USB4 BIT(4) -#define DPM_FLAG_SEND_ATTENTION BIT(5) - -#ifdef CONFIG_ZEPHYR -static int init_vdm_attention_mutex(const struct device *dev) -{ - int port; - - ARG_UNUSED(dev); - - for (port = 0; port < CONFIG_USB_PD_PORT_MAX_COUNT; port++) - k_mutex_init(&dpm[port].vdm_attention_mutex); - - return 0; -} -SYS_INIT(init_vdm_attention_mutex, POST_KERNEL, 50); -#endif /* CONFIG_ZEPHYR */ - -enum ec_status pd_request_vdm_attention(int port, const uint32_t *data, - int vdo_count) -{ - mutex_lock(&dpm[port].vdm_attention_mutex); - - /* Only one Attention message may be pending */ - if (DPM_CHK_FLAG(port, DPM_FLAG_SEND_ATTENTION)) { - mutex_unlock(&dpm[port].vdm_attention_mutex); - return EC_RES_UNAVAILABLE; - } - - /* SVDM Attention message must be 1 or 2 VDOs in length */ - if (!vdo_count || (vdo_count > DPM_ATTENION_MAX_VDO)) { - mutex_unlock(&dpm[port].vdm_attention_mutex); - return EC_RES_INVALID_PARAM; - } - - /* Save contents of Attention message */ - memcpy(dpm[port].vdm_attention, data, vdo_count * sizeof(uint32_t)); - dpm[port].vdm_cnt = vdo_count; - - /* - * Indicate to DPM that an Attention message needs to be sent. This flag - * will be cleared when the Attention message is sent to the policy - * engine. - */ - DPM_SET_FLAG(port, DPM_FLAG_SEND_ATTENTION); - - mutex_unlock(&dpm[port].vdm_attention_mutex); - - return EC_RES_SUCCESS; -} - -enum ec_status pd_request_enter_mode(int port, enum typec_mode mode) -{ - if (port >= board_get_usb_pd_port_count()) - return EC_RES_INVALID_PARAM; - - /* Only one enter request may be active at a time. */ - if (DPM_CHK_FLAG(port, DPM_FLAG_ENTER_DP | - DPM_FLAG_ENTER_TBT | - DPM_FLAG_ENTER_USB4)) - return EC_RES_BUSY; - - switch (mode) { - case TYPEC_MODE_DP: - DPM_SET_FLAG(port, DPM_FLAG_ENTER_DP); - break; -#ifdef CONFIG_USB_PD_TBT_COMPAT_MODE - case TYPEC_MODE_TBT: - DPM_SET_FLAG(port, DPM_FLAG_ENTER_TBT); - break; -#endif /* CONFIG_USB_PD_TBT_COMPAT_MODE */ -#ifdef CONFIG_USB_PD_USB4 - case TYPEC_MODE_USB4: - DPM_SET_FLAG(port, DPM_FLAG_ENTER_USB4); - break; -#endif - default: - return EC_RES_INVALID_PARAM; - } - - DPM_CLR_FLAG(port, DPM_FLAG_MODE_ENTRY_DONE); - DPM_CLR_FLAG(port, DPM_FLAG_EXIT_REQUEST); - - return EC_RES_SUCCESS; -} - -void dpm_init(int port) -{ - dpm[port].flags = 0; -} - -static void dpm_set_mode_entry_done(int port) -{ - DPM_SET_FLAG(port, DPM_FLAG_MODE_ENTRY_DONE); - DPM_CLR_FLAG(port, DPM_FLAG_ENTER_DP | DPM_FLAG_ENTER_TBT | - DPM_FLAG_ENTER_USB4); -} - -void dpm_set_mode_exit_request(int port) -{ - DPM_SET_FLAG(port, DPM_FLAG_EXIT_REQUEST); -} - -static void dpm_clear_mode_exit_request(int port) -{ - DPM_CLR_FLAG(port, DPM_FLAG_EXIT_REQUEST); -} - -/* - * Returns true if the current policy requests that the EC try to enter this - * mode on this port. If the EC is in charge of policy, the answer is always - * yes. - */ -static bool dpm_mode_entry_requested(int port, enum typec_mode mode) -{ - /* If the AP isn't controlling policy, the EC is. */ - if (!IS_ENABLED(CONFIG_USB_PD_REQUIRE_AP_MODE_ENTRY)) - return true; - - switch (mode) { - case TYPEC_MODE_DP: - return !!DPM_CHK_FLAG(port, DPM_FLAG_ENTER_DP); - case TYPEC_MODE_TBT: - return !!DPM_CHK_FLAG(port, DPM_FLAG_ENTER_TBT); - case TYPEC_MODE_USB4: - return !!DPM_CHK_FLAG(port, DPM_FLAG_ENTER_USB4); - default: - return false; - } -} - -void dpm_vdm_acked(int port, enum tcpci_msg_type type, int vdo_count, - uint32_t *vdm) -{ - const uint16_t svid = PD_VDO_VID(vdm[0]); - - assert(vdo_count >= 1); - - switch (svid) { - case USB_SID_DISPLAYPORT: - dp_vdm_acked(port, type, vdo_count, vdm); - break; - case USB_VID_INTEL: - if (IS_ENABLED(CONFIG_USB_PD_TBT_COMPAT_MODE)) { - intel_vdm_acked(port, type, vdo_count, vdm); - break; - } - default: - CPRINTS("C%d: Received unexpected VDM ACK for SVID %d", port, - svid); - } -} - -void dpm_vdm_naked(int port, enum tcpci_msg_type type, uint16_t svid, - uint8_t vdm_cmd) -{ - switch (svid) { - case USB_SID_DISPLAYPORT: - dp_vdm_naked(port, type, vdm_cmd); - break; - case USB_VID_INTEL: - if (IS_ENABLED(CONFIG_USB_PD_TBT_COMPAT_MODE)) { - intel_vdm_naked(port, type, vdm_cmd); - break; - } - default: - CPRINTS("C%d: Received unexpected VDM NAK for SVID %d", port, - svid); - } -} - -/* - * Requests that the PE send one VDM, whichever is next in the mode entry - * sequence. This only happens if preconditions for mode entry are met. If - * CONFIG_USB_PD_REQUIRE_AP_MODE_ENTRY is enabled, this function waits for the - * AP to direct mode entry. - */ -static void dpm_attempt_mode_entry(int port) -{ - int vdo_count = 0; - uint32_t vdm[VDO_MAX_SIZE]; - enum tcpci_msg_type tx_type = TCPCI_MSG_SOP; - bool enter_mode_requested = - IS_ENABLED(CONFIG_USB_PD_REQUIRE_AP_MODE_ENTRY) ? false : true; - - if (pd_get_data_role(port) != PD_ROLE_DFP) { - if (DPM_CHK_FLAG(port, DPM_FLAG_ENTER_DP | - DPM_FLAG_ENTER_TBT | - DPM_FLAG_ENTER_USB4)) - DPM_CLR_FLAG(port, DPM_FLAG_ENTER_DP | - DPM_FLAG_ENTER_TBT | - DPM_FLAG_ENTER_USB4); - /* - * TODO(b/168030639): Notify the AP that the enter mode request - * failed. - */ - return; - } - -#ifdef HAS_TASK_CHIPSET - /* - * Do not try to enter mode while CPU is off. - * CPU transitions (e.g b/158634281) can occur during the discovery - * phase or during enter/exit negotiations, and the state - * of the modes can get out of sync, causing the attempt to - * enter the mode to fail prematurely. - */ - if (chipset_in_or_transitioning_to_state(CHIPSET_STATE_ANY_OFF)) - return; -#endif - /* - * If discovery has not occurred for modes, do not attempt to switch - * to alt mode. - */ - if (pd_get_svids_discovery(port, TCPCI_MSG_SOP) != PD_DISC_COMPLETE || - pd_get_modes_discovery(port, TCPCI_MSG_SOP) != PD_DISC_COMPLETE) - return; - - if (dp_entry_is_done(port) || - (IS_ENABLED(CONFIG_USB_PD_TBT_COMPAT_MODE) && - tbt_entry_is_done(port)) || - (IS_ENABLED(CONFIG_USB_PD_USB4) && enter_usb_entry_is_done(port))) { - dpm_set_mode_entry_done(port); - return; - } - - /* Check if port, port partner and cable support USB4. */ - if (IS_ENABLED(CONFIG_USB_PD_USB4) && - board_is_tbt_usb4_port(port) && - enter_usb_port_partner_is_capable(port) && - enter_usb_cable_is_capable(port) && - dpm_mode_entry_requested(port, TYPEC_MODE_USB4)) { - /* - * For certain cables, enter Thunderbolt alt mode with the - * cable and USB4 mode with the port partner. - */ - if (tbt_cable_entry_required_for_usb4(port)) { - vdo_count = tbt_setup_next_vdm(port, - ARRAY_SIZE(vdm), vdm, &tx_type); - } else { - pd_dpm_request(port, DPM_REQUEST_ENTER_USB); - return; - } - } - - /* If not, check if they support Thunderbolt alt mode. */ - if (IS_ENABLED(CONFIG_USB_PD_TBT_COMPAT_MODE) && - board_is_tbt_usb4_port(port) && - pd_is_mode_discovered_for_svid(port, TCPCI_MSG_SOP, - USB_VID_INTEL) && - dpm_mode_entry_requested(port, TYPEC_MODE_TBT)) { - enter_mode_requested = true; - vdo_count = tbt_setup_next_vdm(port, - ARRAY_SIZE(vdm), vdm, &tx_type); - } - - /* If not, check if they support DisplayPort alt mode. */ - if (vdo_count == 0 && !DPM_CHK_FLAG(port, DPM_FLAG_MODE_ENTRY_DONE) && - pd_is_mode_discovered_for_svid(port, TCPCI_MSG_SOP, - USB_SID_DISPLAYPORT) && - dpm_mode_entry_requested(port, TYPEC_MODE_DP)) { - enter_mode_requested = true; - vdo_count = dp_setup_next_vdm(port, ARRAY_SIZE(vdm), vdm); - } - - /* - * If the PE didn't discover any supported (requested) alternate mode, - * just mark setup done and get out of here. - */ - if (vdo_count == 0 && !DPM_CHK_FLAG(port, DPM_FLAG_MODE_ENTRY_DONE)) { - if (enter_mode_requested) { - /* - * TODO(b/168030639): Notify the AP that mode entry - * failed. - */ - CPRINTS("C%d: No supported alt mode discovered", port); - } - /* - * If the AP did not request mode entry, it may do so in the - * future, but the DPM is done trying for now. - */ - dpm_set_mode_entry_done(port); - return; - } - - if (vdo_count < 0) { - dpm_set_mode_entry_done(port); - CPRINTS("C%d: Couldn't construct alt mode VDM", port); - return; - } - - /* - * TODO(b/155890173): Provide a host command to request that the PE send - * an arbitrary VDM via this mechanism. - */ - if (!pd_setup_vdm_request(port, tx_type, vdm, vdo_count)) { - dpm_set_mode_entry_done(port); - return; - } - - pd_dpm_request(port, DPM_REQUEST_VDM); -} - -static void dpm_attempt_mode_exit(int port) -{ - uint32_t vdm = 0; - int vdo_count = 0; - enum tcpci_msg_type tx_type = TCPCI_MSG_SOP; - - if (IS_ENABLED(CONFIG_USB_PD_USB4) && - enter_usb_entry_is_done(port)) { - CPRINTS("C%d: USB4 teardown", port); - usb4_exit_mode_request(port); - } - if (IS_ENABLED(CONFIG_USB_PD_TBT_COMPAT_MODE) && - tbt_is_active(port)) { - /* - * When the port is in USB4 mode and receives an exit request, - * it leaves USB4 SOP in active state. - * TODO(b/156749387): Support Data Reset for exiting USB4 SOP. - */ - CPRINTS("C%d: TBT teardown", port); - tbt_exit_mode_request(port); - vdo_count = tbt_setup_next_vdm(port, VDO_MAX_SIZE, &vdm, - &tx_type); - } else if (dp_is_active(port)) { - CPRINTS("C%d: DP teardown", port); - vdo_count = dp_setup_next_vdm(port, VDO_MAX_SIZE, &vdm); - } else { - /* Clear exit mode request */ - dpm_clear_mode_exit_request(port); - return; - } - - if (!pd_setup_vdm_request(port, tx_type, &vdm, vdo_count)) { - dpm_clear_mode_exit_request(port); - return; - } - - pd_dpm_request(port, DPM_REQUEST_VDM); -} - -static void dpm_send_attention_vdm(int port) -{ - /* Set up VDM ATTEN msg that was passed in previously */ - if (pd_setup_vdm_request(port, TCPCI_MSG_SOP, dpm[port].vdm_attention, - dpm[port].vdm_cnt) == true) - /* Trigger PE to start a VDM command run */ - pd_dpm_request(port, DPM_REQUEST_VDM); - - /* Clear flag after message is sent to PE layer */ - DPM_CLR_FLAG(port, DPM_FLAG_SEND_ATTENTION); -} - -void dpm_run(int port) -{ - if (pd_get_data_role(port) == PD_ROLE_DFP) { - /* Run DFP related DPM requests */ - if (DPM_CHK_FLAG(port, DPM_FLAG_EXIT_REQUEST)) - dpm_attempt_mode_exit(port); - else if (!DPM_CHK_FLAG(port, DPM_FLAG_MODE_ENTRY_DONE)) - dpm_attempt_mode_entry(port); - } else { - /* Run UFP related DPM requests */ - if (DPM_CHK_FLAG(port, DPM_FLAG_SEND_ATTENTION)) - dpm_send_attention_vdm(port); - } -} - -/* - * Source-out policy variables and APIs - * - * Priority for the available 3.0 A ports is given in the following order: - * - sink partners which report requiring > 1.5 A in their Sink_Capabilities - */ - -/* - * Bitmasks of port numbers in each following category - * - * Note: request bitmasks should be accessed atomically as other ports may alter - * them - */ -static uint32_t max_current_claimed; -K_MUTEX_DEFINE(max_current_claimed_lock); - -/* Ports with PD sink needing > 1.5 A */ -static uint32_t sink_max_pdo_requested; -/* Ports with FRS source needing > 1.5 A */ -static uint32_t source_frs_max_requested; -/* Ports with non-PD sinks, so current requirements are unknown */ -static uint32_t non_pd_sink_max_requested; - -#define LOWEST_PORT(p) __builtin_ctz(p) /* Undefined behavior if p == 0 */ - -static int count_port_bits(uint32_t bitmask) -{ - int i, total = 0; - - for (i = 0; i < board_get_usb_pd_port_count(); i++) { - if (bitmask & BIT(i)) - total++; - } - - return total; -} - -/* - * Centralized, mutex-controlled updates to the claimed 3.0 A ports - */ -static void balance_source_ports(void); -DECLARE_DEFERRED(balance_source_ports); - -static void balance_source_ports(void) -{ - uint32_t removed_ports, new_ports; - static bool deferred_waiting; - - if (task_get_current() == TASK_ID_HOOKS) - deferred_waiting = false; - - /* - * Ignore balance attempts while we're waiting for a downgraded port to - * finish the downgrade. - */ - if (deferred_waiting) - return; - - mutex_lock(&max_current_claimed_lock); - - /* Remove any ports which no longer require 3.0 A */ - removed_ports = max_current_claimed & ~(sink_max_pdo_requested | - source_frs_max_requested | - non_pd_sink_max_requested); - max_current_claimed &= ~removed_ports; - - /* Allocate 3.0 A to new PD sink ports that need it */ - new_ports = sink_max_pdo_requested & ~max_current_claimed; - while (new_ports) { - int new_max_port = LOWEST_PORT(new_ports); - - if (count_port_bits(max_current_claimed) < - CONFIG_USB_PD_3A_PORTS) { - max_current_claimed |= BIT(new_max_port); - typec_select_src_current_limit_rp(new_max_port, - TYPEC_RP_3A0); - } else if (non_pd_sink_max_requested & max_current_claimed) { - /* Always downgrade non-PD ports first */ - int rem_non_pd = LOWEST_PORT(non_pd_sink_max_requested & - max_current_claimed); - typec_select_src_current_limit_rp(rem_non_pd, - typec_get_default_current_limit_rp(rem_non_pd)); - max_current_claimed &= ~BIT(rem_non_pd); - - /* Wait tSinkAdj before using current */ - deferred_waiting = true; - hook_call_deferred(&balance_source_ports_data, - PD_T_SINK_ADJ); - goto unlock; - } else if (source_frs_max_requested & max_current_claimed) { - /* Downgrade lowest FRS port from 3.0 A slot */ - int rem_frs = LOWEST_PORT(source_frs_max_requested & - max_current_claimed); - pd_dpm_request(rem_frs, DPM_REQUEST_FRS_DET_DISABLE); - max_current_claimed &= ~BIT(rem_frs); - - /* Give 20 ms for the PD task to process DPM flag */ - deferred_waiting = true; - hook_call_deferred(&balance_source_ports_data, - 20 * MSEC); - goto unlock; - } else { - /* No lower priority ports to downgrade */ - goto unlock; - } - new_ports &= ~BIT(new_max_port); - } - - /* Allocate 3.0 A to any new FRS ports that need it */ - new_ports = source_frs_max_requested & ~max_current_claimed; - while (new_ports) { - int new_frs_port = LOWEST_PORT(new_ports); - - if (count_port_bits(max_current_claimed) < - CONFIG_USB_PD_3A_PORTS) { - max_current_claimed |= BIT(new_frs_port); - pd_dpm_request(new_frs_port, - DPM_REQUEST_FRS_DET_ENABLE); - } else if (non_pd_sink_max_requested & max_current_claimed) { - int rem_non_pd = LOWEST_PORT(non_pd_sink_max_requested & - max_current_claimed); - typec_select_src_current_limit_rp(rem_non_pd, - typec_get_default_current_limit_rp(rem_non_pd)); - max_current_claimed &= ~BIT(rem_non_pd); - - /* Wait tSinkAdj before using current */ - deferred_waiting = true; - hook_call_deferred(&balance_source_ports_data, - PD_T_SINK_ADJ); - goto unlock; - } else { - /* No lower priority ports to downgrade */ - goto unlock; - } - new_ports &= ~BIT(new_frs_port); - } - - /* Allocate 3.0 A to any non-PD ports which could need it */ - new_ports = non_pd_sink_max_requested & ~max_current_claimed; - while (new_ports) { - int new_max_port = LOWEST_PORT(new_ports); - - if (count_port_bits(max_current_claimed) < - CONFIG_USB_PD_3A_PORTS) { - max_current_claimed |= BIT(new_max_port); - typec_select_src_current_limit_rp(new_max_port, - TYPEC_RP_3A0); - } else { - /* No lower priority ports to downgrade */ - goto unlock; - } - new_ports &= ~BIT(new_max_port); - } -unlock: - mutex_unlock(&max_current_claimed_lock); -} - -/* Process port's first Sink_Capabilities PDO for port current consideration */ -void dpm_evaluate_sink_fixed_pdo(int port, uint32_t vsafe5v_pdo) -{ - /* Verify partner supplied valid vSafe5V fixed object first */ - if ((vsafe5v_pdo & PDO_TYPE_MASK) != PDO_TYPE_FIXED) - return; - - if (PDO_FIXED_VOLTAGE(vsafe5v_pdo) != 5000) - return; - - if (pd_get_power_role(port) == PD_ROLE_SOURCE) { - if (CONFIG_USB_PD_3A_PORTS == 0) - return; - - /* Valid PDO to process, so evaluate whether >1.5A is needed */ - if (PDO_FIXED_CURRENT(vsafe5v_pdo) <= 1500) - return; - - atomic_or(&sink_max_pdo_requested, BIT(port)); - } else { - int frs_current = vsafe5v_pdo & PDO_FIXED_FRS_CURR_MASK; - - if (!IS_ENABLED(CONFIG_USB_PD_FRS)) - return; - - /* FRS is only supported in PD 3.0 and higher */ - if (pd_get_rev(port, TCPCI_MSG_SOP) == PD_REV20) - return; - - if ((vsafe5v_pdo & PDO_FIXED_DUAL_ROLE) && frs_current) { - /* Always enable FRS when 3.0 A is not needed */ - if (frs_current == PDO_FIXED_FRS_CURR_DFLT_USB_POWER || - frs_current == PDO_FIXED_FRS_CURR_1A5_AT_5V) { - pd_dpm_request(port, - DPM_REQUEST_FRS_DET_ENABLE); - return; - } - - if (CONFIG_USB_PD_3A_PORTS == 0) - return; - - atomic_or(&source_frs_max_requested, BIT(port)); - } else { - return; - } - } - - balance_source_ports(); -} - -void dpm_add_non_pd_sink(int port) -{ - if (CONFIG_USB_PD_3A_PORTS == 0) - return; - - atomic_or(&non_pd_sink_max_requested, BIT(port)); - - balance_source_ports(); -} - -void dpm_remove_sink(int port) -{ - if (CONFIG_USB_PD_3A_PORTS == 0) - return; - - if (!(BIT(port) & sink_max_pdo_requested) && - !(BIT(port) & non_pd_sink_max_requested)) - return; - - atomic_clear_bits(&sink_max_pdo_requested, BIT(port)); - atomic_clear_bits(&non_pd_sink_max_requested, BIT(port)); - - /* Restore selected default Rp on the port */ - typec_select_src_current_limit_rp(port, - typec_get_default_current_limit_rp(port)); - - balance_source_ports(); -} - -void dpm_remove_source(int port) -{ - if (CONFIG_USB_PD_3A_PORTS == 0) - return; - - if (!IS_ENABLED(CONFIG_USB_PD_FRS)) - return; - - if (!(BIT(port) & source_frs_max_requested)) - return; - - atomic_clear_bits(&source_frs_max_requested, BIT(port)); - - balance_source_ports(); -} - -/* - * Note: all ports receive the 1.5 A source offering until they are found to - * match a criteria on the 3.0 A priority list (ex. through sink capability - * probing), at which point they will be offered a new 3.0 A source capability. - */ -__overridable int dpm_get_source_pdo(const uint32_t **src_pdo, const int port) -{ - /* Max PDO may not exist on boards which don't offer 3 A */ -#if CONFIG_USB_PD_3A_PORTS > 0 - if (max_current_claimed & BIT(port)) { - *src_pdo = pd_src_pdo_max; - return pd_src_pdo_max_cnt; - } -#endif - - *src_pdo = pd_src_pdo; - return pd_src_pdo_cnt; -} - -int dpm_get_source_current(const int port) -{ - if (pd_get_power_role(port) == PD_ROLE_SINK) - return 0; - - if (max_current_claimed & BIT(port)) - return 3000; - else if (typec_get_default_current_limit_rp(port) == TYPEC_RP_1A5) - return 1500; - else - return 500; -} |