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
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index ccc3895..9eb085f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c
@@ -1387,6 +1387,21 @@ static int dwc3_core_init(struct dwc3 *dwc) } /* + * STAR 9001285599: This issue affects DWC_usb3 version 3.20a + * only. If the PM TIMER ECM is enabled through GUCTL2[19], the + * link compliance test (TD7.21) may fail. If the ECN is not + * enabled (GUCTL2[19] = 0), the controller will use the old timer + * value (5us), which is still acceptable for the link compliance + * test. Therefore, do not enable PM TIMER ECM in 3.20a by + * setting GUCTL2[19] by default; instead, use GUCTL2[19] = 0. + */ + if (DWC3_VER_IS(DWC3, 320A)) { + reg = dwc3_readl(dwc->regs, DWC3_GUCTL2); + reg &= ~DWC3_GUCTL2_LC_TIMER; + dwc3_writel(dwc->regs, DWC3_GUCTL2, reg); + } + + /* * When configured in HOST mode, after issuing U3/L2 exit controller * fails to send proper CRC checksum in CRC5 feild. Because of this * behaviour Transaction Error is generated, resulting in reset and
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 1e561fd..c71240e 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h
@@ -421,6 +421,7 @@ /* Global User Control Register 2 */ #define DWC3_GUCTL2_RST_ACTBITLATER BIT(14) +#define DWC3_GUCTL2_LC_TIMER BIT(19) /* Global User Control Register 3 */ #define DWC3_GUCTL3_SPLITDISABLE BIT(14) @@ -1269,6 +1270,7 @@ struct dwc3 { #define DWC3_REVISION_290A 0x5533290a #define DWC3_REVISION_300A 0x5533300a #define DWC3_REVISION_310A 0x5533310a +#define DWC3_REVISION_320A 0x5533320a #define DWC3_REVISION_330A 0x5533330a #define DWC31_REVISION_ANY 0x0
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 89fc690..291bc54 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c
@@ -287,6 +287,23 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc, bool async); * * Caller should handle locking. This function will issue @cmd with given * @params to @dep and wait for its completion. + * + * According to the programming guide, if the link state is in L1/L2/U3, + * then sending the Start Transfer command may not complete. The + * programming guide suggested to bring the link state back to ON/U0 by + * performing remote wakeup prior to sending the command. However, don't + * initiate remote wakeup when the user/function does not send wakeup + * request via wakeup ops. Send the command when it's allowed. + * + * Notes: + * For L1 link state, issuing a command requires the clearing of + * GUSB2PHYCFG.SUSPENDUSB2, which turns on the signal required to complete + * the given command (usually within 50us). This should happen within the + * command timeout set by driver. No additional step is needed. + * + * For L2 or U3 link state, the gadget is in USB suspend. Care should be + * taken when sending Start Transfer command to ensure that it's done after + * USB resume. */ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, struct dwc3_gadget_ep_cmd_params *params) @@ -327,30 +344,6 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); } - if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) { - int link_state; - - /* - * Initiate remote wakeup if the link state is in U3 when - * operating in SS/SSP or L1/L2 when operating in HS/FS. If the - * link state is in U1/U2, no remote wakeup is needed. The Start - * Transfer command will initiate the link recovery. - */ - link_state = dwc3_gadget_get_link_state(dwc); - switch (link_state) { - case DWC3_LINK_STATE_U2: - if (dwc->gadget->speed >= USB_SPEED_SUPER) - break; - - fallthrough; - case DWC3_LINK_STATE_U3: - ret = __dwc3_gadget_wakeup(dwc, false); - dev_WARN_ONCE(dwc->dev, ret, "wakeup failed --> %d\n", - ret); - break; - } - } - /* * For some commands such as Update Transfer command, DEPCMDPARn * registers are reserved. Since the driver often sends Update Transfer
diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c index 0eed0e0..d394aff 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c +++ b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c
@@ -2251,7 +2251,6 @@ static int cdns2_gadget_start(struct cdns2_device *pdev) { u32 max_speed; void *buf; - int val; int ret; pdev->usb_regs = pdev->regs; @@ -2261,14 +2260,9 @@ static int cdns2_gadget_start(struct cdns2_device *pdev) pdev->adma_regs = pdev->regs + CDNS2_ADMA_REGS_OFFSET; /* Reset controller. */ - set_reg_bit_8(&pdev->usb_regs->cpuctrl, CPUCTRL_SW_RST); - - ret = readl_poll_timeout_atomic(&pdev->usb_regs->cpuctrl, val, - !(val & CPUCTRL_SW_RST), 1, 10000); - if (ret) { - dev_err(pdev->dev, "Error: reset controller timeout\n"); - return -EINVAL; - } + writeb(CPUCTRL_SW_RST | CPUCTRL_UPCLK | CPUCTRL_WUEN, + &pdev->usb_regs->cpuctrl); + usleep_range(5, 10); usb_initialize_gadget(pdev->dev, &pdev->gadget, NULL);
diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h index 71e2f62..b5d5ec1 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h +++ b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h
@@ -292,8 +292,17 @@ struct cdns2_usb_regs { #define SPEEDCTRL_HSDISABLE BIT(7) /* CPUCTRL- bitmasks. */ +/* UP clock enable */ +#define CPUCTRL_UPCLK BIT(0) /* Controller reset bit. */ #define CPUCTRL_SW_RST BIT(1) +/** + * If the wuen bit is ‘1’, the upclken is automatically set to ‘1’ after + * detecting rising edge of wuintereq interrupt. If the wuen bit is ‘0’, + * the wuintereq interrupt is ignored. + */ +#define CPUCTRL_WUEN BIT(7) + /** * struct cdns2_adma_regs - ADMA controller registers.
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 4039851..17155ed 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -965,10 +965,20 @@ static void ucsi_unregister_plug(struct ucsi_connector *con) static int ucsi_register_cable(struct ucsi_connector *con) { + struct ucsi_cable_property cable_prop; struct typec_cable *cable; struct typec_cable_desc desc = {}; + u64 command; + int ret; - switch (UCSI_CABLE_PROP_FLAG_PLUG_TYPE(con->cable_prop.flags)) { + command = UCSI_GET_CABLE_PROPERTY | UCSI_CONNECTOR_NUMBER(con->num); + ret = ucsi_send_command(con->ucsi, command, &cable_prop, sizeof(cable_prop)); + if (ret < 0) { + dev_err(con->ucsi->dev, "GET_CABLE_PROPERTY failed (%d)\n", ret); + return ret; + } + + switch (UCSI_CABLE_PROP_FLAG_PLUG_TYPE(cable_prop.flags)) { case UCSI_CABLE_PROPERTY_PLUG_TYPE_A: desc.type = USB_PLUG_TYPE_A; break; @@ -984,10 +994,10 @@ static int ucsi_register_cable(struct ucsi_connector *con) } desc.identity = &con->cable_identity; - desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & - con->cable_prop.flags); - desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD( - con->cable_prop.flags); + desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & cable_prop.flags); + + if (con->ucsi->version >= UCSI_VERSION_2_1) + desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD(cable_prop.flags); cable = typec_register_cable(con->port, &desc); if (IS_ERR(cable)) { @@ -1012,6 +1022,27 @@ static void ucsi_unregister_cable(struct ucsi_connector *con) con->cable = NULL; } +static int ucsi_check_connector_capability(struct ucsi_connector *con) +{ + u64 command; + int ret; + + if (!con->partner || con->ucsi->version < UCSI_VERSION_2_1) + return 0; + + command = UCSI_GET_CONNECTOR_CAPABILITY | UCSI_CONNECTOR_NUMBER(con->num); + ret = ucsi_send_command(con->ucsi, command, &con->cap, sizeof(con->cap)); + if (ret < 0) { + dev_err(con->ucsi->dev, "GET_CONNECTOR_CAPABILITY failed (%d)\n", ret); + return ret; + } + + typec_partner_set_pd_revision(con->partner, + UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags)); + + return ret; +} + static void ucsi_pwr_opmode_change(struct ucsi_connector *con) { switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) { @@ -1021,6 +1052,7 @@ static void ucsi_pwr_opmode_change(struct ucsi_connector *con) ucsi_partner_task(con, ucsi_get_src_pdos, 30, 0); ucsi_partner_task(con, ucsi_check_altmodes, 30, HZ); ucsi_partner_task(con, ucsi_register_partner_pdos, 1, HZ); + ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ); break; case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5: con->rdo = 0; @@ -1064,7 +1096,6 @@ static int ucsi_register_partner(struct ucsi_connector *con) desc.identity = &con->partner_identity; desc.usb_pd = pwr_opmode == UCSI_CONSTAT_PWR_OPMODE_PD; - desc.pd_revision = UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags); partner = typec_register_partner(con->port, &desc); if (IS_ERR(partner)) { @@ -1141,27 +1172,6 @@ static void ucsi_partner_change(struct ucsi_connector *con) con->num, u_role); } -static int ucsi_check_connector_capability(struct ucsi_connector *con) -{ - u64 command; - int ret; - - if (!con->partner || con->ucsi->version < UCSI_VERSION_2_0) - return 0; - - command = UCSI_GET_CONNECTOR_CAPABILITY | UCSI_CONNECTOR_NUMBER(con->num); - ret = ucsi_send_command(con->ucsi, command, &con->cap, sizeof(con->cap)); - if (ret < 0) { - dev_err(con->ucsi->dev, "GET_CONNECTOR_CAPABILITY failed (%d)\n", ret); - return ret; - } - - typec_partner_set_pd_revision(con->partner, - UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags)); - - return ret; -} - static int ucsi_check_connection(struct ucsi_connector *con) { u8 prev_flags = con->status.flags; @@ -1193,21 +1203,11 @@ static int ucsi_check_connection(struct ucsi_connector *con) static int ucsi_check_cable(struct ucsi_connector *con) { - u64 command; int ret, num_plug_am; if (con->cable) return 0; - command = UCSI_GET_CABLE_PROPERTY | UCSI_CONNECTOR_NUMBER(con->num); - ret = ucsi_send_command(con->ucsi, command, &con->cable_prop, - sizeof(con->cable_prop)); - if (ret < 0) { - dev_err(con->ucsi->dev, "GET_CABLE_PROPERTY failed (%d)\n", - ret); - return ret; - } - ret = ucsi_register_cable(con); if (ret < 0) return ret; @@ -1283,15 +1283,16 @@ static void ucsi_handle_connector_change(struct work_struct *work) if (con->status.flags & UCSI_CONSTAT_CONNECTED) { ucsi_register_partner(con); ucsi_partner_task(con, ucsi_check_connection, 1, HZ); - ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ); if (con->ucsi->cap.features & UCSI_CAP_GET_PD_MESSAGE) ucsi_partner_task(con, ucsi_get_partner_identity, 1, HZ); if (con->ucsi->cap.features & UCSI_CAP_CABLE_DETAILS) ucsi_partner_task(con, ucsi_check_cable, 1, HZ); if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) == - UCSI_CONSTAT_PWR_OPMODE_PD) + UCSI_CONSTAT_PWR_OPMODE_PD) { ucsi_partner_task(con, ucsi_register_partner_pdos, 1, HZ); + ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ); + } } else { ucsi_unregister_partner(con); } @@ -1706,6 +1707,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con) ucsi_register_device_pdos(con); ucsi_get_src_pdos(con); ucsi_check_altmodes(con); + ucsi_check_connector_capability(con); } trace_ucsi_register_port(con->num, &con->status);
diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 57129f3..5a3481d 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h
@@ -465,7 +465,6 @@ struct ucsi_connector { struct ucsi_connector_status status; struct ucsi_connector_capability cap; - struct ucsi_cable_property cable_prop; struct power_supply *psy; struct power_supply_desc psy_desc; u32 rdo;