From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/drivers/usb/chipidea/core.c | 254 +++++++++++++++++++++++++++++++++++++-------------
1 files changed, 186 insertions(+), 68 deletions(-)
diff --git a/kernel/drivers/usb/chipidea/core.c b/kernel/drivers/usb/chipidea/core.c
index c13f9a1..127b1a6 100644
--- a/kernel/drivers/usb/chipidea/core.c
+++ b/kernel/drivers/usb/chipidea/core.c
@@ -3,42 +3,16 @@
* core.c - ChipIdea USB IP core family device controller
*
* Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
+ * Copyright (C) 2020 NXP
*
* Author: David Lopo
- */
-
-/*
- * Description: ChipIdea USB IP core family device controller
+ * Peter Chen <peter.chen@nxp.com>
*
- * This driver is composed of several blocks:
- * - HW: hardware interface
- * - DBG: debug facilities (optional)
- * - UTIL: utilities
- * - ISR: interrupts handling
- * - ENDPT: endpoint operations (Gadget API)
- * - GADGET: gadget operations (Gadget API)
- * - BUS: bus glue code, bus abstraction layer
- *
- * Compile Options
- * - STALL_IN: non-empty bulk-in pipes cannot be halted
- * if defined mass storage compliance succeeds but with warnings
- * => case 4: Hi > Dn
- * => case 5: Hi > Di
- * => case 8: Hi <> Do
- * if undefined usbtest 13 fails
- * - TRACE: enable function tracing (depends on DEBUG)
- *
- * Main Features
- * - Chapter 9 & Mass Storage Compliance with Gadget File Storage
- * - Chapter 9 Compliance with Gadget Zero (STALL_IN undefined)
- * - Normal & LPM support
- *
- * USBTEST Report
- * - OK: 0-12, 13 (STALL_IN defined) & 14
- * - Not Supported: 15 & 16 (ISO)
- *
- * TODO List
- * - Suspend & Remote Wakeup
+ * Main Features:
+ * - Four transfers are supported, usbtest is passed
+ * - USB Certification for gadget: CH9 and Mass Storage are passed
+ * - Low power mode
+ * - USB wakeup
*/
#include <linux/delay.h>
#include <linux/device.h>
@@ -53,6 +27,7 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
@@ -180,6 +155,7 @@
/**
* hw_port_test_set: writes port test mode (execute without interruption)
+ * @ci: the controller
* @mode: new value
*
* This function returns an error code
@@ -271,7 +247,7 @@
ci->rev = ci_get_revision(ci);
dev_dbg(ci->dev,
- "ChipIdea HDRC found, revision: %d, lpm: %d; cap: %p op: %p\n",
+ "revision: %d, lpm: %d; cap: %px op: %px\n",
ci->rev, ci->hw_bank.lpm, ci->hw_bank.cap, ci->hw_bank.op);
/* setup lock mode ? */
@@ -522,8 +498,9 @@
hw_write(ci, OP_USBMODE, USBMODE_SLOM, USBMODE_SLOM);
if (hw_read(ci, OP_USBMODE, USBMODE_CM) != USBMODE_CM_DC) {
- pr_err("cannot enter in %s device mode", ci_role(ci)->name);
- pr_err("lpm = %i", ci->hw_bank.lpm);
+ dev_err(ci->dev, "cannot enter in %s device mode\n",
+ ci_role(ci)->name);
+ dev_err(ci->dev, "lpm = %i\n", ci->hw_bank.lpm);
return -ENODEV;
}
@@ -607,6 +584,75 @@
return NOTIFY_DONE;
}
+static enum usb_role ci_usb_role_switch_get(struct usb_role_switch *sw)
+{
+ struct ci_hdrc *ci = usb_role_switch_get_drvdata(sw);
+ enum usb_role role;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ci->lock, flags);
+ role = ci_role_to_usb_role(ci);
+ spin_unlock_irqrestore(&ci->lock, flags);
+
+ return role;
+}
+
+static int ci_usb_role_switch_set(struct usb_role_switch *sw,
+ enum usb_role role)
+{
+ struct ci_hdrc *ci = usb_role_switch_get_drvdata(sw);
+ struct ci_hdrc_cable *cable = NULL;
+ enum usb_role current_role = ci_role_to_usb_role(ci);
+ enum ci_role ci_role = usb_role_to_ci_role(role);
+ unsigned long flags;
+
+ if ((ci_role != CI_ROLE_END && !ci->roles[ci_role]) ||
+ (current_role == role))
+ return 0;
+
+ pm_runtime_get_sync(ci->dev);
+ /* Stop current role */
+ spin_lock_irqsave(&ci->lock, flags);
+ if (current_role == USB_ROLE_DEVICE)
+ cable = &ci->platdata->vbus_extcon;
+ else if (current_role == USB_ROLE_HOST)
+ cable = &ci->platdata->id_extcon;
+
+ if (cable) {
+ cable->changed = true;
+ cable->connected = false;
+ ci_irq(ci);
+ spin_unlock_irqrestore(&ci->lock, flags);
+ if (ci->wq && role != USB_ROLE_NONE)
+ flush_workqueue(ci->wq);
+ spin_lock_irqsave(&ci->lock, flags);
+ }
+
+ cable = NULL;
+
+ /* Start target role */
+ if (role == USB_ROLE_DEVICE)
+ cable = &ci->platdata->vbus_extcon;
+ else if (role == USB_ROLE_HOST)
+ cable = &ci->platdata->id_extcon;
+
+ if (cable) {
+ cable->changed = true;
+ cable->connected = true;
+ ci_irq(ci);
+ }
+ spin_unlock_irqrestore(&ci->lock, flags);
+ pm_runtime_put_sync(ci->dev);
+
+ return 0;
+}
+
+static struct usb_role_switch_desc ci_role_switch = {
+ .set = ci_usb_role_switch_set,
+ .get = ci_usb_role_switch_get,
+ .allow_userspace_control = true,
+};
+
static int ci_get_platdata(struct device *dev,
struct ci_hdrc_platform_data *platdata)
{
@@ -625,7 +671,7 @@
if (platdata->dr_mode != USB_DR_MODE_PERIPHERAL) {
/* Get the vbus regulator */
- platdata->reg_vbus = devm_regulator_get(dev, "vbus");
+ platdata->reg_vbus = devm_regulator_get_optional(dev, "vbus");
if (PTR_ERR(platdata->reg_vbus) == -EPROBE_DEFER) {
return -EPROBE_DEFER;
} else if (PTR_ERR(platdata->reg_vbus) == -ENODEV) {
@@ -732,6 +778,27 @@
else
cable->connected = false;
}
+
+ if (device_property_read_bool(dev, "usb-role-switch"))
+ ci_role_switch.fwnode = dev->fwnode;
+
+ platdata->pctl = devm_pinctrl_get(dev);
+ if (!IS_ERR(platdata->pctl)) {
+ struct pinctrl_state *p;
+
+ p = pinctrl_lookup_state(platdata->pctl, "default");
+ if (!IS_ERR(p))
+ platdata->pins_default = p;
+
+ p = pinctrl_lookup_state(platdata->pctl, "host");
+ if (!IS_ERR(p))
+ platdata->pins_host = p;
+
+ p = pinctrl_lookup_state(platdata->pctl, "device");
+ if (!IS_ERR(p))
+ platdata->pins_device = p;
+ }
+
return 0;
}
@@ -820,6 +887,33 @@
}
EXPORT_SYMBOL_GPL(ci_hdrc_remove_device);
+/**
+ * ci_hdrc_query_available_role: get runtime available operation mode
+ *
+ * The glue layer can get current operation mode (host/peripheral/otg)
+ * This function should be called after ci core device has created.
+ *
+ * @pdev: the platform device of ci core.
+ *
+ * Return runtime usb_dr_mode.
+ */
+enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev)
+{
+ struct ci_hdrc *ci = platform_get_drvdata(pdev);
+
+ if (!ci)
+ return USB_DR_MODE_UNKNOWN;
+ if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET])
+ return USB_DR_MODE_OTG;
+ else if (ci->roles[CI_ROLE_HOST])
+ return USB_DR_MODE_HOST;
+ else if (ci->roles[CI_ROLE_GADGET])
+ return USB_DR_MODE_PERIPHERAL;
+ else
+ return USB_DR_MODE_UNKNOWN;
+}
+EXPORT_SYMBOL_GPL(ci_hdrc_query_available_role);
+
static inline void ci_role_destroy(struct ci_hdrc *ci)
{
ci_hdrc_gadget_destroy(ci);
@@ -892,10 +986,7 @@
&dev_attr_role.attr,
NULL,
};
-
-static const struct attribute_group ci_attr_group = {
- .attrs = ci_attrs,
-};
+ATTRIBUTE_GROUPS(ci);
static int ci_hdrc_probe(struct platform_device *pdev)
{
@@ -944,32 +1035,47 @@
} else if (ci->platdata->usb_phy) {
ci->usb_phy = ci->platdata->usb_phy;
} else {
- ci->usb_phy = devm_usb_get_phy_by_phandle(dev->parent, "phys",
- 0);
+ /* Look for a generic PHY first */
ci->phy = devm_phy_get(dev->parent, "usb-phy");
- /* Fallback to grabbing any registered USB2 PHY */
- if (IS_ERR(ci->usb_phy) &&
- PTR_ERR(ci->usb_phy) != -EPROBE_DEFER)
+ if (PTR_ERR(ci->phy) == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto ulpi_exit;
+ } else if (IS_ERR(ci->phy)) {
+ ci->phy = NULL;
+ }
+
+ /* Look for a legacy USB PHY from device-tree next */
+ if (!ci->phy) {
+ ci->usb_phy = devm_usb_get_phy_by_phandle(dev->parent,
+ "phys", 0);
+
+ if (PTR_ERR(ci->usb_phy) == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto ulpi_exit;
+ } else if (IS_ERR(ci->usb_phy)) {
+ ci->usb_phy = NULL;
+ }
+ }
+
+ /* Look for any registered legacy USB PHY as last resort */
+ if (!ci->phy && !ci->usb_phy) {
ci->usb_phy = devm_usb_get_phy(dev->parent,
USB_PHY_TYPE_USB2);
- /* if both generic PHY and USB PHY layers aren't enabled */
- if (PTR_ERR(ci->phy) == -ENOSYS &&
- PTR_ERR(ci->usb_phy) == -ENXIO) {
+ if (PTR_ERR(ci->usb_phy) == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto ulpi_exit;
+ } else if (IS_ERR(ci->usb_phy)) {
+ ci->usb_phy = NULL;
+ }
+ }
+
+ /* No USB PHY was found in the end */
+ if (!ci->phy && !ci->usb_phy) {
ret = -ENXIO;
goto ulpi_exit;
}
-
- if (IS_ERR(ci->phy) && IS_ERR(ci->usb_phy)) {
- ret = -EPROBE_DEFER;
- goto ulpi_exit;
- }
-
- if (IS_ERR(ci->phy))
- ci->phy = NULL;
- else if (IS_ERR(ci->usb_phy))
- ci->usb_phy = NULL;
}
ret = ci_usb_phy_init(ci);
@@ -982,7 +1088,6 @@
ci->irq = platform_get_irq(pdev, 0);
if (ci->irq < 0) {
- dev_err(dev, "missing IRQ\n");
ret = ci->irq;
goto deinit_phy;
}
@@ -1025,6 +1130,16 @@
}
}
+ if (ci_role_switch.fwnode) {
+ ci_role_switch.driver_data = ci;
+ ci->role_switch = usb_role_switch_register(dev,
+ &ci_role_switch);
+ if (IS_ERR(ci->role_switch)) {
+ ret = PTR_ERR(ci->role_switch);
+ goto deinit_otg;
+ }
+ }
+
if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) {
if (ci->is_otg) {
ci->role = ci_otg_role(ci);
@@ -1046,8 +1161,11 @@
if (!ci_otg_is_fsm_mode(ci)) {
/* only update vbus status for peripheral */
- if (ci->role == CI_ROLE_GADGET)
+ if (ci->role == CI_ROLE_GADGET) {
+ /* Pull down DP for possible charger detection */
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
ci_handle_vbus_change(ci);
+ }
ret = ci_role_start(ci, ci->role);
if (ret) {
@@ -1080,15 +1198,12 @@
device_set_wakeup_capable(&pdev->dev, true);
dbg_create_files(ci);
- ret = sysfs_create_group(&dev->kobj, &ci_attr_group);
- if (ret)
- goto remove_debug;
-
return 0;
-remove_debug:
- dbg_remove_files(ci);
stop:
+ if (ci->role_switch)
+ usb_role_switch_unregister(ci->role_switch);
+deinit_otg:
if (ci->is_otg && ci->roles[CI_ROLE_GADGET])
ci_hdrc_otg_destroy(ci);
deinit_gadget:
@@ -1107,6 +1222,9 @@
{
struct ci_hdrc *ci = platform_get_drvdata(pdev);
+ if (ci->role_switch)
+ usb_role_switch_unregister(ci->role_switch);
+
if (ci->supports_runtime_pm) {
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -1114,7 +1232,6 @@
}
dbg_remove_files(ci);
- sysfs_remove_group(&ci->dev->kobj, &ci_attr_group);
ci_role_destroy(ci);
ci_hdrc_enter_lpm(ci, true);
ci_usb_phy_exit(ci);
@@ -1317,6 +1434,7 @@
.driver = {
.name = "ci_hdrc",
.pm = &ci_pm_ops,
+ .dev_groups = ci_groups,
},
};
--
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