^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * phy.c -- USB phy handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2004-2013 Texas Instruments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/usb/phy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Default current range by charger type. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define DEFAULT_SDP_CUR_MIN 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define DEFAULT_SDP_CUR_MAX 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define DEFAULT_SDP_CUR_MIN_SS 150
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define DEFAULT_SDP_CUR_MAX_SS 900
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define DEFAULT_DCP_CUR_MIN 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define DEFAULT_DCP_CUR_MAX 5000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define DEFAULT_CDP_CUR_MIN 1500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define DEFAULT_CDP_CUR_MAX 5000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define DEFAULT_ACA_CUR_MIN 1500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define DEFAULT_ACA_CUR_MAX 5000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static LIST_HEAD(phy_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static DEFINE_SPINLOCK(phy_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct phy_devm {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct usb_phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct notifier_block *nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static const char *const usb_chger_type[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) [UNKNOWN_TYPE] = "USB_CHARGER_UNKNOWN_TYPE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) [SDP_TYPE] = "USB_CHARGER_SDP_TYPE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) [CDP_TYPE] = "USB_CHARGER_CDP_TYPE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) [DCP_TYPE] = "USB_CHARGER_DCP_TYPE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) [ACA_TYPE] = "USB_CHARGER_ACA_TYPE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static struct usb_phy *__usb_find_phy(struct list_head *list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) enum usb_phy_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct usb_phy *phy = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) list_for_each_entry(phy, list, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (phy->type != type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static struct usb_phy *__of_usb_find_phy(struct device_node *node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct usb_phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (!of_device_is_available(node))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) list_for_each_entry(phy, &phy_list, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (node != phy->dev->of_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return ERR_PTR(-EPROBE_DEFER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static void usb_phy_set_default_current(struct usb_phy *usb_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) usb_phy->chg_cur.sdp_min = DEFAULT_SDP_CUR_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) usb_phy->chg_cur.sdp_max = DEFAULT_SDP_CUR_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) usb_phy->chg_cur.dcp_min = DEFAULT_DCP_CUR_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) usb_phy->chg_cur.dcp_max = DEFAULT_DCP_CUR_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) usb_phy->chg_cur.cdp_min = DEFAULT_CDP_CUR_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) usb_phy->chg_cur.cdp_max = DEFAULT_CDP_CUR_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) usb_phy->chg_cur.aca_min = DEFAULT_ACA_CUR_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) usb_phy->chg_cur.aca_max = DEFAULT_ACA_CUR_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * usb_phy_notify_charger_work - notify the USB charger state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @work: the charger work to notify the USB charger state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * This work can be issued when USB charger state has been changed or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * USB charger current has been changed, then we can notify the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * what can be drawn to power user and the charger state to userspace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * If we get the charger type from extcon subsystem, we can notify the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * charger state to power user automatically by usb_phy_get_charger_type()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * issuing from extcon subsystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * If we get the charger type from ->charger_detect() instead of extcon
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * subsystem, the usb phy driver should issue usb_phy_set_charger_state()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * to set charger state when the charger state has been changed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static void usb_phy_notify_charger_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct usb_phy *usb_phy = container_of(work, struct usb_phy, chg_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) char uchger_state[50] = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) char uchger_type[50] = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) char *envp[] = { uchger_state, uchger_type, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) unsigned int min, max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) switch (usb_phy->chg_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) case USB_CHARGER_PRESENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) usb_phy_get_charger_current(usb_phy, &min, &max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) atomic_notifier_call_chain(&usb_phy->notifier, max, usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) snprintf(uchger_state, ARRAY_SIZE(uchger_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) "USB_CHARGER_STATE=%s", "USB_CHARGER_PRESENT");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) case USB_CHARGER_ABSENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) usb_phy_set_default_current(usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) atomic_notifier_call_chain(&usb_phy->notifier, 0, usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) snprintf(uchger_state, ARRAY_SIZE(uchger_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) "USB_CHARGER_STATE=%s", "USB_CHARGER_ABSENT");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) dev_warn(usb_phy->dev, "Unknown USB charger state: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) usb_phy->chg_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) snprintf(uchger_type, ARRAY_SIZE(uchger_type),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) "USB_CHARGER_TYPE=%s", usb_chger_type[usb_phy->chg_type]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) kobject_uevent_env(&usb_phy->dev->kobj, KOBJ_CHANGE, envp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static void __usb_phy_get_charger_type(struct usb_phy *usb_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_SDP) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) usb_phy->chg_type = SDP_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) usb_phy->chg_state = USB_CHARGER_PRESENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) } else if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_CDP) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) usb_phy->chg_type = CDP_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) usb_phy->chg_state = USB_CHARGER_PRESENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) } else if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_DCP) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) usb_phy->chg_type = DCP_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) usb_phy->chg_state = USB_CHARGER_PRESENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) } else if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_ACA) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) usb_phy->chg_type = ACA_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) usb_phy->chg_state = USB_CHARGER_PRESENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) usb_phy->chg_type = UNKNOWN_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) usb_phy->chg_state = USB_CHARGER_ABSENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) schedule_work(&usb_phy->chg_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * usb_phy_get_charger_type - get charger type from extcon subsystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * @nb: the notifier block to determine charger type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * @state: the cable state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @data: private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * Determin the charger type from extcon subsystem which also means the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * charger state has been chaned, then we should notify this event.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static int usb_phy_get_charger_type(struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) unsigned long state, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct usb_phy *usb_phy = container_of(nb, struct usb_phy, type_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) __usb_phy_get_charger_type(usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * usb_phy_set_charger_current - set the USB charger current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * @usb_phy: the USB phy to be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * @mA: the current need to be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * Usually we only change the charger default current when USB finished the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * enumeration as one SDP charger. As one SDP charger, usb_phy_set_power()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * will issue this function to change charger current when after setting USB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * configuration, or suspend/resume USB. For other type charger, we should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * use the default charger current and we do not suggest to issue this function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * to change the charger current.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * When USB charger current has been changed, we need to notify the power users.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) void usb_phy_set_charger_current(struct usb_phy *usb_phy, unsigned int mA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) switch (usb_phy->chg_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) case SDP_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (usb_phy->chg_cur.sdp_max == mA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) usb_phy->chg_cur.sdp_max = (mA > DEFAULT_SDP_CUR_MAX_SS) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) DEFAULT_SDP_CUR_MAX_SS : mA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) case DCP_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (usb_phy->chg_cur.dcp_max == mA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) usb_phy->chg_cur.dcp_max = (mA > DEFAULT_DCP_CUR_MAX) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) DEFAULT_DCP_CUR_MAX : mA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case CDP_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (usb_phy->chg_cur.cdp_max == mA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) usb_phy->chg_cur.cdp_max = (mA > DEFAULT_CDP_CUR_MAX) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) DEFAULT_CDP_CUR_MAX : mA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) case ACA_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (usb_phy->chg_cur.aca_max == mA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) usb_phy->chg_cur.aca_max = (mA > DEFAULT_ACA_CUR_MAX) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) DEFAULT_ACA_CUR_MAX : mA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) schedule_work(&usb_phy->chg_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) EXPORT_SYMBOL_GPL(usb_phy_set_charger_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * usb_phy_get_charger_current - get the USB charger current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * @usb_phy: the USB phy to be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * @min: the minimum current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * @max: the maximum current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * Usually we will notify the maximum current to power user, but for some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * special case, power user also need the minimum current value. Then the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * power user can issue this function to get the suitable current.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) void usb_phy_get_charger_current(struct usb_phy *usb_phy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) unsigned int *min, unsigned int *max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) switch (usb_phy->chg_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) case SDP_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) *min = usb_phy->chg_cur.sdp_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) *max = usb_phy->chg_cur.sdp_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) case DCP_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) *min = usb_phy->chg_cur.dcp_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) *max = usb_phy->chg_cur.dcp_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) case CDP_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) *min = usb_phy->chg_cur.cdp_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) *max = usb_phy->chg_cur.cdp_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) case ACA_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) *min = usb_phy->chg_cur.aca_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) *max = usb_phy->chg_cur.aca_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) *min = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) *max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) EXPORT_SYMBOL_GPL(usb_phy_get_charger_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * usb_phy_set_charger_state - set the USB charger state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * @usb_phy: the USB phy to be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * @state: the new state need to be set for charger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * The usb phy driver can issue this function when the usb phy driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * detected the charger state has been changed, in this case the charger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * type should be get from ->charger_detect().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) void usb_phy_set_charger_state(struct usb_phy *usb_phy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) enum usb_charger_state state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (usb_phy->chg_state == state || !usb_phy->charger_detect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) usb_phy->chg_state = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (usb_phy->chg_state == USB_CHARGER_PRESENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) usb_phy->chg_type = usb_phy->charger_detect(usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) usb_phy->chg_type = UNKNOWN_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) schedule_work(&usb_phy->chg_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) EXPORT_SYMBOL_GPL(usb_phy_set_charger_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static void devm_usb_phy_release(struct device *dev, void *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct usb_phy *phy = *(struct usb_phy **)res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) usb_put_phy(phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static void devm_usb_phy_release2(struct device *dev, void *_res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct phy_devm *res = _res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (res->nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) usb_unregister_notifier(res->phy, res->nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) usb_put_phy(res->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static int devm_usb_phy_match(struct device *dev, void *res, void *match_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct usb_phy **phy = res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return *phy == match_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static void usb_charger_init(struct usb_phy *usb_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) usb_phy->chg_type = UNKNOWN_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) usb_phy->chg_state = USB_CHARGER_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) usb_phy_set_default_current(usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) INIT_WORK(&usb_phy->chg_work, usb_phy_notify_charger_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static int usb_add_extcon(struct usb_phy *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (of_property_read_bool(x->dev->of_node, "extcon")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) x->edev = extcon_get_edev_by_phandle(x->dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (IS_ERR(x->edev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return PTR_ERR(x->edev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) x->id_edev = extcon_get_edev_by_phandle(x->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (IS_ERR(x->id_edev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) x->id_edev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) dev_info(x->dev, "No separate ID extcon device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (x->vbus_nb.notifier_call) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) ret = devm_extcon_register_notifier(x->dev, x->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) EXTCON_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) &x->vbus_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) dev_err(x->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) "register VBUS notifier failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) x->type_nb.notifier_call = usb_phy_get_charger_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) ret = devm_extcon_register_notifier(x->dev, x->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) EXTCON_CHG_USB_SDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) &x->type_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) dev_err(x->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) "register extcon USB SDP failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) ret = devm_extcon_register_notifier(x->dev, x->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) EXTCON_CHG_USB_CDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) &x->type_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) dev_err(x->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) "register extcon USB CDP failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) ret = devm_extcon_register_notifier(x->dev, x->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) EXTCON_CHG_USB_DCP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) &x->type_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) dev_err(x->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) "register extcon USB DCP failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) ret = devm_extcon_register_notifier(x->dev, x->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) EXTCON_CHG_USB_ACA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) &x->type_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) dev_err(x->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) "register extcon USB ACA failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (x->id_nb.notifier_call) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct extcon_dev *id_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (x->id_edev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) id_ext = x->id_edev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) id_ext = x->edev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ret = devm_extcon_register_notifier(x->dev, id_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) EXTCON_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) &x->id_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) dev_err(x->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) "register ID notifier failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (x->type_nb.notifier_call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) __usb_phy_get_charger_type(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * devm_usb_get_phy - find the USB PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * @dev: device that requests this phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * @type: the type of the phy the controller requires
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * Gets the phy using usb_get_phy(), and associates a device with it using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * devres. On driver detach, release function is invoked on the devres data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) * then, devres data is freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * For use by USB host and peripheral drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct usb_phy **ptr, *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (!ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) phy = usb_get_phy(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (!IS_ERR(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) *ptr = phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) devres_add(dev, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) devres_free(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) EXPORT_SYMBOL_GPL(devm_usb_get_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * usb_get_phy - find the USB PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * @type: the type of the phy the controller requires
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) * Returns the phy driver, after getting a refcount to it; or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * -ENODEV if there is no such phy. The caller is responsible for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * calling usb_put_phy() to release that count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * For use by USB host and peripheral drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct usb_phy *usb_get_phy(enum usb_phy_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) struct usb_phy *phy = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) spin_lock_irqsave(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) phy = __usb_find_phy(&phy_list, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) pr_debug("PHY: unable to find transceiver of type %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) usb_phy_type_string(type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (!IS_ERR(phy))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) phy = ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) goto err0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) get_device(phy->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) err0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) spin_unlock_irqrestore(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) EXPORT_SYMBOL_GPL(usb_get_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * devm_usb_get_phy_by_node - find the USB PHY by device_node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * @dev: device that requests this phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * @node: the device_node for the phy device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * @nb: a notifier_block to register with the phy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * Returns the phy driver associated with the given device_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * after getting a refcount to it, -ENODEV if there is no such phy or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) * -EPROBE_DEFER if the device is not yet loaded. While at that, it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) * also associates the device with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * the phy using devres. On driver detach, release function is invoked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * on the devres data, then, devres data is freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * For use by peripheral drivers for devices related to a phy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * such as a charger.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) struct usb_phy *devm_usb_get_phy_by_node(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct device_node *node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) struct notifier_block *nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct usb_phy *phy = ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct phy_devm *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) ptr = devres_alloc(devm_usb_phy_release2, sizeof(*ptr), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (!ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) dev_dbg(dev, "failed to allocate memory for devres\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) goto err0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) spin_lock_irqsave(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) phy = __of_usb_find_phy(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (IS_ERR(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) devres_free(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) if (!try_module_get(phy->dev->driver->owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) phy = ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) devres_free(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) usb_register_notifier(phy, nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) ptr->phy = phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) ptr->nb = nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) devres_add(dev, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) get_device(phy->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) spin_unlock_irqrestore(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) err0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) return phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) EXPORT_SYMBOL_GPL(devm_usb_get_phy_by_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * devm_usb_get_phy_by_phandle - find the USB PHY by phandle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) * @dev: device that requests this phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * @phandle: name of the property holding the phy phandle value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * @index: the index of the phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * Returns the phy driver associated with the given phandle value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * after getting a refcount to it, -ENODEV if there is no such phy or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * -EPROBE_DEFER if there is a phandle to the phy, but the device is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * not yet loaded. While at that, it also associates the device with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) * the phy using devres. On driver detach, release function is invoked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * on the devres data, then, devres data is freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * For use by USB host and peripheral drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) const char *phandle, u8 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) struct device_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) struct usb_phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) if (!dev->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) dev_dbg(dev, "device does not have a device node entry\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) node = of_parse_phandle(dev->of_node, phandle, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (!node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) dev_dbg(dev, "failed to get %s phandle in %pOF node\n", phandle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) dev->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) phy = devm_usb_get_phy_by_node(dev, node, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) of_node_put(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) EXPORT_SYMBOL_GPL(devm_usb_get_phy_by_phandle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) * devm_usb_put_phy - release the USB PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * @dev: device that wants to release this phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * @phy: the phy returned by devm_usb_get_phy()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) * destroys the devres associated with this phy and invokes usb_put_phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) * to release the phy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) * For use by USB host and peripheral drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) void devm_usb_put_phy(struct device *dev, struct usb_phy *phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) r = devres_destroy(dev, devm_usb_phy_release, devm_usb_phy_match, phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) EXPORT_SYMBOL_GPL(devm_usb_put_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * usb_put_phy - release the USB PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * @x: the phy returned by usb_get_phy()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) * Releases a refcount the caller received from usb_get_phy().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) * For use by USB host and peripheral drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) void usb_put_phy(struct usb_phy *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (x) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct module *owner = x->dev->driver->owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) put_device(x->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) module_put(owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) EXPORT_SYMBOL_GPL(usb_put_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * usb_add_phy: declare the USB PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * @x: the USB phy to be used; or NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * @type: the type of this PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * This call is exclusively for use by phy drivers, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * coordinate the activities of drivers for host and peripheral
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * controllers, and in some cases for VBUS current regulation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) int usb_add_phy(struct usb_phy *x, enum usb_phy_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct usb_phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) if (x->type != USB_PHY_TYPE_UNDEFINED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) dev_err(x->dev, "not accepting initialized PHY %s\n", x->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) usb_charger_init(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) ret = usb_add_extcon(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) spin_lock_irqsave(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) list_for_each_entry(phy, &phy_list, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) if (phy->type == type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) dev_err(x->dev, "transceiver type %s already exists\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) usb_phy_type_string(type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) x->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) list_add_tail(&x->head, &phy_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) spin_unlock_irqrestore(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) EXPORT_SYMBOL_GPL(usb_add_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * usb_add_phy_dev - declare the USB PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * @x: the USB phy to be used; or NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * This call is exclusively for use by phy drivers, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * coordinate the activities of drivers for host and peripheral
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * controllers, and in some cases for VBUS current regulation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) int usb_add_phy_dev(struct usb_phy *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (!x->dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) dev_err(x->dev, "no device provided for PHY\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) usb_charger_init(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) ret = usb_add_extcon(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) spin_lock_irqsave(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) list_add_tail(&x->head, &phy_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) spin_unlock_irqrestore(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) EXPORT_SYMBOL_GPL(usb_add_phy_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) * usb_remove_phy - remove the OTG PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) * @x: the USB OTG PHY to be removed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) * This reverts the effects of usb_add_phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) void usb_remove_phy(struct usb_phy *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) spin_lock_irqsave(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) list_del(&x->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) spin_unlock_irqrestore(&phy_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) EXPORT_SYMBOL_GPL(usb_remove_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) * usb_phy_set_event - set event to phy event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) * @x: the phy returned by usb_get_phy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) * @event: event to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * This sets event to phy event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) void usb_phy_set_event(struct usb_phy *x, unsigned long event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) x->last_event = event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) EXPORT_SYMBOL_GPL(usb_phy_set_event);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags