USB fixes for 6.11-rc7
Here are a handful of small USB fixes for 6.11-rc7. Included in here are: - dwc3 driver fixes for two reported problems - two typec ucsi driver fixes - cdns2 controller reset fix All of these have been in linux-next this week with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZt1Wgw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykqYACfVlrFsDTuVhom0Gf3Hw1C7YCZWhsAn1ItrLUQ W7rwOrF1P7WtH7A3SzZt =QK7s -----END PGP SIGNATURE----- Merge tag 'usb-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are a handful of small USB fixes for 6.11-rc7. Included in here are: - dwc3 driver fixes for two reported problems - two typec ucsi driver fixes - cdns2 controller reset fix All of these have been in linux-next this week with no reported problems" * tag 'usb-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: typec: ucsi: Fix cable registration usb: typec: ucsi: Fix the partner PD revision usb: cdns2: Fix controller reset issue usb: dwc3: core: update LC timer as per USB Spec V3.2 usb: dwc3: Avoid waking up gadget during startxfer
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commit
51c4d5f10d
@ -1386,6 +1386,21 @@ static int dwc3_core_init(struct dwc3 *dwc)
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dwc3_writel(dwc->regs, DWC3_GUCTL2, reg);
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}
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/*
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* STAR 9001285599: This issue affects DWC_usb3 version 3.20a
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* only. If the PM TIMER ECM is enabled through GUCTL2[19], the
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* link compliance test (TD7.21) may fail. If the ECN is not
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* enabled (GUCTL2[19] = 0), the controller will use the old timer
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* value (5us), which is still acceptable for the link compliance
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* test. Therefore, do not enable PM TIMER ECM in 3.20a by
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* setting GUCTL2[19] by default; instead, use GUCTL2[19] = 0.
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*/
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if (DWC3_VER_IS(DWC3, 320A)) {
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reg = dwc3_readl(dwc->regs, DWC3_GUCTL2);
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reg &= ~DWC3_GUCTL2_LC_TIMER;
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dwc3_writel(dwc->regs, DWC3_GUCTL2, reg);
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}
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/*
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* When configured in HOST mode, after issuing U3/L2 exit controller
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* fails to send proper CRC checksum in CRC5 feild. Because of this
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@ -421,6 +421,7 @@
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/* Global User Control Register 2 */
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#define DWC3_GUCTL2_RST_ACTBITLATER BIT(14)
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#define DWC3_GUCTL2_LC_TIMER BIT(19)
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/* Global User Control Register 3 */
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#define DWC3_GUCTL3_SPLITDISABLE BIT(14)
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@ -1269,6 +1270,7 @@ struct dwc3 {
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#define DWC3_REVISION_290A 0x5533290a
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#define DWC3_REVISION_300A 0x5533300a
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#define DWC3_REVISION_310A 0x5533310a
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#define DWC3_REVISION_320A 0x5533320a
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#define DWC3_REVISION_330A 0x5533330a
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#define DWC31_REVISION_ANY 0x0
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@ -287,6 +287,23 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc, bool async);
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*
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* Caller should handle locking. This function will issue @cmd with given
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* @params to @dep and wait for its completion.
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*
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* According to the programming guide, if the link state is in L1/L2/U3,
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* then sending the Start Transfer command may not complete. The
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* programming guide suggested to bring the link state back to ON/U0 by
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* performing remote wakeup prior to sending the command. However, don't
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* initiate remote wakeup when the user/function does not send wakeup
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* request via wakeup ops. Send the command when it's allowed.
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*
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* Notes:
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* For L1 link state, issuing a command requires the clearing of
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* GUSB2PHYCFG.SUSPENDUSB2, which turns on the signal required to complete
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* the given command (usually within 50us). This should happen within the
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* command timeout set by driver. No additional step is needed.
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*
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* For L2 or U3 link state, the gadget is in USB suspend. Care should be
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* taken when sending Start Transfer command to ensure that it's done after
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* USB resume.
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*/
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int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
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struct dwc3_gadget_ep_cmd_params *params)
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@ -327,30 +344,6 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
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dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
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}
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if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
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int link_state;
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/*
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* Initiate remote wakeup if the link state is in U3 when
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* operating in SS/SSP or L1/L2 when operating in HS/FS. If the
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* link state is in U1/U2, no remote wakeup is needed. The Start
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* Transfer command will initiate the link recovery.
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*/
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link_state = dwc3_gadget_get_link_state(dwc);
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switch (link_state) {
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case DWC3_LINK_STATE_U2:
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if (dwc->gadget->speed >= USB_SPEED_SUPER)
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break;
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fallthrough;
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case DWC3_LINK_STATE_U3:
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ret = __dwc3_gadget_wakeup(dwc, false);
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dev_WARN_ONCE(dwc->dev, ret, "wakeup failed --> %d\n",
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ret);
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break;
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}
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}
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/*
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* For some commands such as Update Transfer command, DEPCMDPARn
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* registers are reserved. Since the driver often sends Update Transfer
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@ -2251,7 +2251,6 @@ static int cdns2_gadget_start(struct cdns2_device *pdev)
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{
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u32 max_speed;
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void *buf;
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int val;
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int ret;
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pdev->usb_regs = pdev->regs;
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@ -2261,14 +2260,9 @@ static int cdns2_gadget_start(struct cdns2_device *pdev)
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pdev->adma_regs = pdev->regs + CDNS2_ADMA_REGS_OFFSET;
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/* Reset controller. */
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set_reg_bit_8(&pdev->usb_regs->cpuctrl, CPUCTRL_SW_RST);
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ret = readl_poll_timeout_atomic(&pdev->usb_regs->cpuctrl, val,
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!(val & CPUCTRL_SW_RST), 1, 10000);
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if (ret) {
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dev_err(pdev->dev, "Error: reset controller timeout\n");
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return -EINVAL;
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}
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writeb(CPUCTRL_SW_RST | CPUCTRL_UPCLK | CPUCTRL_WUEN,
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&pdev->usb_regs->cpuctrl);
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usleep_range(5, 10);
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usb_initialize_gadget(pdev->dev, &pdev->gadget, NULL);
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@ -292,8 +292,17 @@ struct cdns2_usb_regs {
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#define SPEEDCTRL_HSDISABLE BIT(7)
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/* CPUCTRL- bitmasks. */
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/* UP clock enable */
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#define CPUCTRL_UPCLK BIT(0)
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/* Controller reset bit. */
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#define CPUCTRL_SW_RST BIT(1)
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/**
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* If the wuen bit is ‘1’, the upclken is automatically set to ‘1’ after
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* detecting rising edge of wuintereq interrupt. If the wuen bit is ‘0’,
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* the wuintereq interrupt is ignored.
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*/
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#define CPUCTRL_WUEN BIT(7)
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/**
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* struct cdns2_adma_regs - ADMA controller registers.
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@ -965,10 +965,20 @@ static void ucsi_unregister_plug(struct ucsi_connector *con)
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static int ucsi_register_cable(struct ucsi_connector *con)
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{
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struct ucsi_cable_property cable_prop;
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struct typec_cable *cable;
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struct typec_cable_desc desc = {};
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u64 command;
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int ret;
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switch (UCSI_CABLE_PROP_FLAG_PLUG_TYPE(con->cable_prop.flags)) {
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command = UCSI_GET_CABLE_PROPERTY | UCSI_CONNECTOR_NUMBER(con->num);
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ret = ucsi_send_command(con->ucsi, command, &cable_prop, sizeof(cable_prop));
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if (ret < 0) {
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dev_err(con->ucsi->dev, "GET_CABLE_PROPERTY failed (%d)\n", ret);
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return ret;
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}
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switch (UCSI_CABLE_PROP_FLAG_PLUG_TYPE(cable_prop.flags)) {
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case UCSI_CABLE_PROPERTY_PLUG_TYPE_A:
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desc.type = USB_PLUG_TYPE_A;
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break;
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@ -984,10 +994,10 @@ static int ucsi_register_cable(struct ucsi_connector *con)
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}
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desc.identity = &con->cable_identity;
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desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE &
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con->cable_prop.flags);
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desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD(
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con->cable_prop.flags);
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desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & cable_prop.flags);
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if (con->ucsi->version >= UCSI_VERSION_2_1)
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desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD(cable_prop.flags);
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cable = typec_register_cable(con->port, &desc);
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if (IS_ERR(cable)) {
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@ -1012,6 +1022,27 @@ static void ucsi_unregister_cable(struct ucsi_connector *con)
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con->cable = NULL;
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}
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static int ucsi_check_connector_capability(struct ucsi_connector *con)
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{
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u64 command;
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int ret;
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if (!con->partner || con->ucsi->version < UCSI_VERSION_2_1)
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return 0;
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command = UCSI_GET_CONNECTOR_CAPABILITY | UCSI_CONNECTOR_NUMBER(con->num);
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ret = ucsi_send_command(con->ucsi, command, &con->cap, sizeof(con->cap));
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if (ret < 0) {
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dev_err(con->ucsi->dev, "GET_CONNECTOR_CAPABILITY failed (%d)\n", ret);
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return ret;
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}
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typec_partner_set_pd_revision(con->partner,
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UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags));
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return ret;
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}
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static void ucsi_pwr_opmode_change(struct ucsi_connector *con)
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{
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switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) {
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@ -1021,6 +1052,7 @@ static void ucsi_pwr_opmode_change(struct ucsi_connector *con)
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ucsi_partner_task(con, ucsi_get_src_pdos, 30, 0);
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ucsi_partner_task(con, ucsi_check_altmodes, 30, HZ);
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ucsi_partner_task(con, ucsi_register_partner_pdos, 1, HZ);
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ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ);
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break;
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case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5:
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con->rdo = 0;
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@ -1064,7 +1096,6 @@ static int ucsi_register_partner(struct ucsi_connector *con)
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desc.identity = &con->partner_identity;
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desc.usb_pd = pwr_opmode == UCSI_CONSTAT_PWR_OPMODE_PD;
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desc.pd_revision = UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags);
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partner = typec_register_partner(con->port, &desc);
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if (IS_ERR(partner)) {
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@ -1141,27 +1172,6 @@ static void ucsi_partner_change(struct ucsi_connector *con)
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con->num, u_role);
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}
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static int ucsi_check_connector_capability(struct ucsi_connector *con)
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{
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u64 command;
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int ret;
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if (!con->partner || con->ucsi->version < UCSI_VERSION_2_0)
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return 0;
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command = UCSI_GET_CONNECTOR_CAPABILITY | UCSI_CONNECTOR_NUMBER(con->num);
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ret = ucsi_send_command(con->ucsi, command, &con->cap, sizeof(con->cap));
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if (ret < 0) {
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dev_err(con->ucsi->dev, "GET_CONNECTOR_CAPABILITY failed (%d)\n", ret);
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return ret;
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}
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typec_partner_set_pd_revision(con->partner,
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UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags));
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return ret;
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}
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static int ucsi_check_connection(struct ucsi_connector *con)
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{
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u8 prev_flags = con->status.flags;
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@ -1193,21 +1203,11 @@ static int ucsi_check_connection(struct ucsi_connector *con)
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static int ucsi_check_cable(struct ucsi_connector *con)
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{
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u64 command;
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int ret, num_plug_am;
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if (con->cable)
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return 0;
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command = UCSI_GET_CABLE_PROPERTY | UCSI_CONNECTOR_NUMBER(con->num);
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ret = ucsi_send_command(con->ucsi, command, &con->cable_prop,
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sizeof(con->cable_prop));
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if (ret < 0) {
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dev_err(con->ucsi->dev, "GET_CABLE_PROPERTY failed (%d)\n",
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ret);
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return ret;
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}
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ret = ucsi_register_cable(con);
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if (ret < 0)
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return ret;
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@ -1283,15 +1283,16 @@ static void ucsi_handle_connector_change(struct work_struct *work)
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if (con->status.flags & UCSI_CONSTAT_CONNECTED) {
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ucsi_register_partner(con);
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ucsi_partner_task(con, ucsi_check_connection, 1, HZ);
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ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ);
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if (con->ucsi->cap.features & UCSI_CAP_GET_PD_MESSAGE)
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ucsi_partner_task(con, ucsi_get_partner_identity, 1, HZ);
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if (con->ucsi->cap.features & UCSI_CAP_CABLE_DETAILS)
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ucsi_partner_task(con, ucsi_check_cable, 1, HZ);
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if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) ==
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UCSI_CONSTAT_PWR_OPMODE_PD)
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UCSI_CONSTAT_PWR_OPMODE_PD) {
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ucsi_partner_task(con, ucsi_register_partner_pdos, 1, HZ);
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ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ);
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}
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} else {
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ucsi_unregister_partner(con);
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}
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@ -1706,6 +1707,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con)
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ucsi_register_device_pdos(con);
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ucsi_get_src_pdos(con);
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ucsi_check_altmodes(con);
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ucsi_check_connector_capability(con);
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}
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trace_ucsi_register_port(con->num, &con->status);
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@ -465,7 +465,6 @@ struct ucsi_connector {
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struct ucsi_connector_status status;
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struct ucsi_connector_capability cap;
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struct ucsi_cable_property cable_prop;
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struct power_supply *psy;
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struct power_supply_desc psy_desc;
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u32 rdo;
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