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-rw-r--r--drivers/usb/chipidea/Kconfig37
-rw-r--r--drivers/usb/chipidea/Makefile13
-rw-r--r--drivers/usb/chipidea/ci.h1
-rw-r--r--drivers/usb/chipidea/ci_hdrc_imx.c13
-rw-r--r--drivers/usb/chipidea/ci_hdrc_imx.h2
-rw-r--r--drivers/usb/chipidea/ci_hdrc_usb2.c30
-rw-r--r--drivers/usb/chipidea/ci_hdrc_zevio.c67
-rw-r--r--drivers/usb/chipidea/core.c48
-rw-r--r--drivers/usb/chipidea/udc.c170
-rw-r--r--drivers/usb/chipidea/udc.h6
-rw-r--r--drivers/usb/chipidea/usbmisc_imx.c334
-rw-r--r--include/linux/usb/chipidea.h1
12 files changed, 546 insertions, 176 deletions
diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
index d53db520e209..8bafcfc6080d 100644
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -18,17 +18,6 @@ config USB_CHIPIDEA
if USB_CHIPIDEA
-config USB_CHIPIDEA_OF
- tristate
- depends on OF
- default USB_CHIPIDEA
-
-config USB_CHIPIDEA_PCI
- tristate
- depends on USB_PCI
- depends on NOP_USB_XCEIV
- default USB_CHIPIDEA
-
config USB_CHIPIDEA_UDC
bool "ChipIdea device controller"
depends on USB_GADGET
@@ -43,4 +32,30 @@ config USB_CHIPIDEA_HOST
help
Say Y here to enable host controller functionality of the
ChipIdea driver.
+
+config USB_CHIPIDEA_PCI
+ tristate "Enable PCI glue driver" if EMBEDDED
+ depends on USB_PCI
+ depends on NOP_USB_XCEIV
+ default USB_CHIPIDEA
+
+config USB_CHIPIDEA_MSM
+ tristate "Enable MSM hsusb glue driver" if EMBEDDED
+ default USB_CHIPIDEA
+
+config USB_CHIPIDEA_IMX
+ tristate "Enable i.MX USB glue driver" if EMBEDDED
+ depends on OF
+ default USB_CHIPIDEA
+
+config USB_CHIPIDEA_GENERIC
+ tristate "Enable generic USB2 glue driver" if EMBEDDED
+ default USB_CHIPIDEA
+
+config USB_CHIPIDEA_TEGRA
+ tristate "Enable Tegra UDC glue driver" if EMBEDDED
+ depends on OF
+ depends on USB_CHIPIDEA_UDC
+ default USB_CHIPIDEA
+
endif
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index 12df94f78f72..fae779a23866 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -8,11 +8,8 @@ ci_hdrc-$(CONFIG_USB_OTG_FSM) += otg_fsm.o
# Glue/Bridge layers go here
-obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_usb2.o
-obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o
-obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zevio.o
-
-obj-$(CONFIG_USB_CHIPIDEA_PCI) += ci_hdrc_pci.o
-
-obj-$(CONFIG_USB_CHIPIDEA_OF) += usbmisc_imx.o ci_hdrc_imx.o
-obj-$(CONFIG_USB_CHIPIDEA_OF) += ci_hdrc_tegra.o
+obj-$(CONFIG_USB_CHIPIDEA_GENERIC) += ci_hdrc_usb2.o
+obj-$(CONFIG_USB_CHIPIDEA_MSM) += ci_hdrc_msm.o
+obj-$(CONFIG_USB_CHIPIDEA_PCI) += ci_hdrc_pci.o
+obj-$(CONFIG_USB_CHIPIDEA_IMX) += ci_hdrc_imx.o usbmisc_imx.o
+obj-$(CONFIG_USB_CHIPIDEA_TEGRA) += ci_hdrc_tegra.o
diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 644ecaef17ee..0697eb980e5f 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -25,6 +25,7 @@
#define TD_PAGE_COUNT 5
#define CI_HDRC_PAGE_SIZE 4096ul /* page size for TD's */
#define ENDPT_MAX 32
+#define CI_MAX_BUF_SIZE (TD_PAGE_COUNT * CI_HDRC_PAGE_SIZE)
/******************************************************************************
* REGISTERS
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index a479af3ae31d..5ae16368a0c7 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -271,6 +271,7 @@ static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event)
struct device *dev = ci->dev->parent;
struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
int ret = 0;
+ struct imx_usbmisc_data *mdata = data->usbmisc_data;
switch (event) {
case CI_HDRC_IMX_HSIC_ACTIVE_EVENT:
@@ -284,11 +285,19 @@ static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event)
}
break;
case CI_HDRC_IMX_HSIC_SUSPEND_EVENT:
- ret = imx_usbmisc_hsic_set_connect(data->usbmisc_data);
+ ret = imx_usbmisc_hsic_set_connect(mdata);
if (ret)
dev_err(dev,
"hsic_set_connect failed, err=%d\n", ret);
break;
+ case CI_HDRC_CONTROLLER_VBUS_EVENT:
+ if (ci->vbus_active)
+ ret = imx_usbmisc_charger_detection(mdata, true);
+ else
+ ret = imx_usbmisc_charger_detection(mdata, false);
+ if (ci->usb_phy)
+ schedule_work(&ci->usb_phy->chg_work);
+ break;
default:
break;
}
@@ -414,6 +423,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
}
pdata.usb_phy = data->phy;
+ if (data->usbmisc_data)
+ data->usbmisc_data->usb_phy = data->phy;
if ((of_device_is_compatible(np, "fsl,imx53-usb") ||
of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy &&
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h
index c2051aeba13f..727d02b6dbd3 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.h
+++ b/drivers/usb/chipidea/ci_hdrc_imx.h
@@ -24,6 +24,7 @@ struct imx_usbmisc_data {
unsigned int hsic:1; /* HSIC controlller */
unsigned int ext_id:1; /* ID from exteranl event */
unsigned int ext_vbus:1; /* Vbus from exteranl event */
+ struct usb_phy *usb_phy;
};
int imx_usbmisc_init(struct imx_usbmisc_data *data);
@@ -31,5 +32,6 @@ int imx_usbmisc_init_post(struct imx_usbmisc_data *data);
int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled);
int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data);
int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on);
+int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect);
#endif /* __DRIVER_USB_CHIPIDEA_CI_HDRC_IMX_H */
diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
index c044fba463e4..89e1d82d739b 100644
--- a/drivers/usb/chipidea/ci_hdrc_usb2.c
+++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
@@ -28,13 +28,19 @@ static const struct ci_hdrc_platform_data ci_default_pdata = {
.flags = CI_HDRC_DISABLE_STREAMING,
};
-static struct ci_hdrc_platform_data ci_zynq_pdata = {
+static const struct ci_hdrc_platform_data ci_zynq_pdata = {
.capoffset = DEF_CAPOFFSET,
};
+static const struct ci_hdrc_platform_data ci_zevio_pdata = {
+ .capoffset = DEF_CAPOFFSET,
+ .flags = CI_HDRC_REGS_SHARED | CI_HDRC_FORCE_FULLSPEED,
+};
+
static const struct of_device_id ci_hdrc_usb2_of_match[] = {
- { .compatible = "chipidea,usb2"},
- { .compatible = "xlnx,zynq-usb-2.20a", .data = &ci_zynq_pdata},
+ { .compatible = "chipidea,usb2" },
+ { .compatible = "xlnx,zynq-usb-2.20a", .data = &ci_zynq_pdata },
+ { .compatible = "lsi,zevio-usb", .data = &ci_zevio_pdata },
{ }
};
MODULE_DEVICE_TABLE(of, ci_hdrc_usb2_of_match);
@@ -64,13 +70,14 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
- priv->clk = devm_clk_get(dev, NULL);
- if (!IS_ERR(priv->clk)) {
- ret = clk_prepare_enable(priv->clk);
- if (ret) {
- dev_err(dev, "failed to enable the clock: %d\n", ret);
- return ret;
- }
+ priv->clk = devm_clk_get_optional(dev, NULL);
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+
+ ret = clk_prepare_enable(priv->clk);
+ if (ret) {
+ dev_err(dev, "failed to enable the clock: %d\n", ret);
+ return ret;
}
ci_pdata->name = dev_name(dev);
@@ -94,8 +101,7 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
return 0;
clk_err:
- if (!IS_ERR(priv->clk))
- clk_disable_unprepare(priv->clk);
+ clk_disable_unprepare(priv->clk);
return ret;
}
diff --git a/drivers/usb/chipidea/ci_hdrc_zevio.c b/drivers/usb/chipidea/ci_hdrc_zevio.c
deleted file mode 100644
index e1634da4a4b1..000000000000
--- a/drivers/usb/chipidea/ci_hdrc_zevio.c
+++ /dev/null
@@ -1,67 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
- *
- * Based off drivers/usb/chipidea/ci_hdrc_msm.c
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb/chipidea.h>
-
-#include "ci.h"
-
-static struct ci_hdrc_platform_data ci_hdrc_zevio_platdata = {
- .name = "ci_hdrc_zevio",
- .flags = CI_HDRC_REGS_SHARED | CI_HDRC_FORCE_FULLSPEED,
- .capoffset = DEF_CAPOFFSET,
-};
-
-static int ci_hdrc_zevio_probe(struct platform_device *pdev)
-{
- struct platform_device *ci_pdev;
-
- dev_dbg(&pdev->dev, "ci_hdrc_zevio_probe\n");
-
- ci_pdev = ci_hdrc_add_device(&pdev->dev,
- pdev->resource, pdev->num_resources,
- &ci_hdrc_zevio_platdata);
-
- if (IS_ERR(ci_pdev)) {
- dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
- return PTR_ERR(ci_pdev);
- }
-
- platform_set_drvdata(pdev, ci_pdev);
-
- return 0;
-}
-
-static int ci_hdrc_zevio_remove(struct platform_device *pdev)
-{
- struct platform_device *ci_pdev = platform_get_drvdata(pdev);
-
- ci_hdrc_remove_device(ci_pdev);
-
- return 0;
-}
-
-static const struct of_device_id ci_hdrc_zevio_dt_ids[] = {
- { .compatible = "lsi,zevio-usb", },
- { /* sentinel */ }
-};
-
-static struct platform_driver ci_hdrc_zevio_driver = {
- .probe = ci_hdrc_zevio_probe,
- .remove = ci_hdrc_zevio_remove,
- .driver = {
- .name = "zevio_usb",
- .of_match_table = ci_hdrc_zevio_dt_ids,
- },
-};
-
-MODULE_DEVICE_TABLE(of, ci_hdrc_zevio_dt_ids);
-module_platform_driver(ci_hdrc_zevio_driver);
-
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index ae0bdc036464..9a7c53d09ab4 100644
--- a/drivers/usb/chipidea/core.c
+++ b/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
- *
- * 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
+ * Peter Chen <peter.chen@nxp.com>
*
- * 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>
@@ -272,7 +246,7 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base)
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 ? */
@@ -666,6 +640,7 @@ static int ci_usb_role_switch_set(struct usb_role_switch *sw,
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,
@@ -1149,8 +1124,11 @@ static int ci_hdrc_probe(struct platform_device *pdev)
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) {
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 921bcf14dc06..db0cfde0cc3c 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -338,7 +338,7 @@ static int hw_usb_reset(struct ci_hdrc *ci)
*****************************************************************************/
static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq,
- unsigned length)
+ unsigned int length, struct scatterlist *s)
{
int i;
u32 temp;
@@ -366,7 +366,13 @@ static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq,
node->ptr->token |= cpu_to_le32(mul << __ffs(TD_MULTO));
}
- temp = (u32) (hwreq->req.dma + hwreq->req.actual);
+ if (s) {
+ temp = (u32) (sg_dma_address(s) + hwreq->req.actual);
+ node->td_remaining_size = CI_MAX_BUF_SIZE - length;
+ } else {
+ temp = (u32) (hwreq->req.dma + hwreq->req.actual);
+ }
+
if (length) {
node->ptr->page[0] = cpu_to_le32(temp);
for (i = 1; i < TD_PAGE_COUNT; i++) {
@@ -400,6 +406,122 @@ static inline u8 _usb_addr(struct ci_hw_ep *ep)
return ((ep->dir == TX) ? USB_ENDPOINT_DIR_MASK : 0) | ep->num;
}
+static int prepare_td_for_non_sg(struct ci_hw_ep *hwep,
+ struct ci_hw_req *hwreq)
+{
+ unsigned int rest = hwreq->req.length;
+ int pages = TD_PAGE_COUNT;
+ int ret = 0;
+
+ if (rest == 0) {
+ ret = add_td_to_list(hwep, hwreq, 0, NULL);
+ if (ret < 0)
+ return ret;
+ }
+
+ /*
+ * The first buffer could be not page aligned.
+ * In that case we have to span into one extra td.
+ */
+ if (hwreq->req.dma % PAGE_SIZE)
+ pages--;
+
+ while (rest > 0) {
+ unsigned int count = min(hwreq->req.length - hwreq->req.actual,
+ (unsigned int)(pages * CI_HDRC_PAGE_SIZE));
+
+ ret = add_td_to_list(hwep, hwreq, count, NULL);
+ if (ret < 0)
+ return ret;
+
+ rest -= count;
+ }
+
+ if (hwreq->req.zero && hwreq->req.length && hwep->dir == TX
+ && (hwreq->req.length % hwep->ep.maxpacket == 0)) {
+ ret = add_td_to_list(hwep, hwreq, 0, NULL);
+ if (ret < 0)
+ return ret;
+ }
+
+ return ret;
+}
+
+static int prepare_td_per_sg(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq,
+ struct scatterlist *s)
+{
+ unsigned int rest = sg_dma_len(s);
+ int ret = 0;
+
+ hwreq->req.actual = 0;
+ while (rest > 0) {
+ unsigned int count = min_t(unsigned int, rest,
+ CI_MAX_BUF_SIZE);
+
+ ret = add_td_to_list(hwep, hwreq, count, s);
+ if (ret < 0)
+ return ret;
+
+ rest -= count;
+ }
+
+ return ret;
+}
+
+static void ci_add_buffer_entry(struct td_node *node, struct scatterlist *s)
+{
+ int empty_td_slot_index = (CI_MAX_BUF_SIZE - node->td_remaining_size)
+ / CI_HDRC_PAGE_SIZE;
+ int i;
+
+ node->ptr->token +=
+ cpu_to_le32(sg_dma_len(s) << __ffs(TD_TOTAL_BYTES));
+
+ for (i = empty_td_slot_index; i < TD_PAGE_COUNT; i++) {
+ u32 page = (u32) sg_dma_address(s) +
+ (i - empty_td_slot_index) * CI_HDRC_PAGE_SIZE;
+
+ page &= ~TD_RESERVED_MASK;
+ node->ptr->page[i] = cpu_to_le32(page);
+ }
+}
+
+static int prepare_td_for_sg(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
+{
+ struct usb_request *req = &hwreq->req;
+ struct scatterlist *s = req->sg;
+ int ret = 0, i = 0;
+ struct td_node *node = NULL;
+
+ if (!s || req->zero || req->length == 0) {
+ dev_err(hwep->ci->dev, "not supported operation for sg\n");
+ return -EINVAL;
+ }
+
+ while (i++ < req->num_mapped_sgs) {
+ if (sg_dma_address(s) % PAGE_SIZE) {
+ dev_err(hwep->ci->dev, "not page aligned sg buffer\n");
+ return -EINVAL;
+ }
+
+ if (node && (node->td_remaining_size >= sg_dma_len(s))) {
+ ci_add_buffer_entry(node, s);
+ node->td_remaining_size -= sg_dma_len(s);
+ } else {
+ ret = prepare_td_per_sg(hwep, hwreq, s);
+ if (ret)
+ return ret;
+
+ node = list_entry(hwreq->tds.prev,
+ struct td_node, td);
+ }
+
+ s = sg_next(s);
+ }
+
+ return ret;
+}
+
/**
* _hardware_enqueue: configures a request at hardware level
* @hwep: endpoint
@@ -411,8 +533,6 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
{
struct ci_hdrc *ci = hwep->ci;
int ret = 0;
- unsigned rest = hwreq->req.length;
- int pages = TD_PAGE_COUNT;
struct td_node *firstnode, *lastnode;
/* don't queue twice */
@@ -426,35 +546,13 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
if (ret)
return ret;
- /*
- * The first buffer could be not page aligned.
- * In that case we have to span into one extra td.
- */
- if (hwreq->req.dma % PAGE_SIZE)
- pages--;
-
- if (rest == 0) {
- ret = add_td_to_list(hwep, hwreq, 0);
- if (ret < 0)
- goto done;
- }
-
- while (rest > 0) {
- unsigned count = min(hwreq->req.length - hwreq->req.actual,
- (unsigned)(pages * CI_HDRC_PAGE_SIZE));
- ret = add_td_to_list(hwep, hwreq, count);
- if (ret < 0)
- goto done;
-
- rest -= count;
- }
+ if (hwreq->req.num_mapped_sgs)
+ ret = prepare_td_for_sg(hwep, hwreq);
+ else
+ ret = prepare_td_for_non_sg(hwep, hwreq);
- if (hwreq->req.zero && hwreq->req.length && hwep->dir == TX
- && (hwreq->req.length % hwep->ep.maxpacket == 0)) {
- ret = add_td_to_list(hwep, hwreq, 0);
- if (ret < 0)
- goto done;
- }
+ if (ret)
+ return ret;
firstnode = list_first_entry(&hwreq->tds, struct td_node, td);
@@ -1561,6 +1659,7 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
{
struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
unsigned long flags;
+ int ret = 0;
spin_lock_irqsave(&ci->lock, flags);
ci->vbus_active = is_active;
@@ -1570,10 +1669,14 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
usb_phy_set_charger_state(ci->usb_phy, is_active ?
USB_CHARGER_PRESENT : USB_CHARGER_ABSENT);
+ if (ci->platdata->notify_event)
+ ret = ci->platdata->notify_event(ci,
+ CI_HDRC_CONTROLLER_VBUS_EVENT);
+
if (ci->driver)
ci_hdrc_gadget_connect(_gadget, is_active);
- return 0;
+ return ret;
}
static int ci_udc_wakeup(struct usb_gadget *_gadget)
@@ -1936,6 +2039,7 @@ static int udc_start(struct ci_hdrc *ci)
ci->gadget.max_speed = USB_SPEED_HIGH;
ci->gadget.name = ci->platdata->name;
ci->gadget.otg_caps = otg_caps;
+ ci->gadget.sg_supported = 1;
if (ci->platdata->flags & CI_HDRC_REQUIRES_ALIGNED_DMA)
ci->gadget.quirk_avoids_skb_reserve = 1;
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h
index ebb11b625bb8..5193df1e18c7 100644
--- a/drivers/usb/chipidea/udc.h
+++ b/drivers/usb/chipidea/udc.h
@@ -61,16 +61,14 @@ struct td_node {
struct list_head td;
dma_addr_t dma;
struct ci_hw_td *ptr;
+ int td_remaining_size;
};
/**
* struct ci_hw_req - usb request representation
* @req: request structure for gadget drivers
* @queue: link to QH list
- * @ptr: transfer descriptor for this request
- * @dma: dma address for the transfer descriptor
- * @zptr: transfer descriptor for the zero packet
- * @zdma: dma address of the zero packet's transfer descriptor
+ * @tds: link to TD list
*/
struct ci_hw_req {
struct usb_request req;
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index e81e33c26e6c..f136876cb4a3 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -8,6 +8,7 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/delay.h>
+#include <linux/usb/otg.h>
#include "ci_hdrc_imx.h"
@@ -99,6 +100,33 @@
#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
+#define MX7D_USBNC_AUTO_RESUME BIT(2)
+/* The default DM/DP value is pull-down */
+#define MX7D_USBNC_USB_CTRL2_OPMODE(v) (v << 6)
+#define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING MX7D_USBNC_USB_CTRL2_OPMODE(1)
+#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK (BIT(7) | BIT(6))
+#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN BIT(8)
+#define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_VAL BIT(12)
+#define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_EN BIT(13)
+#define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_VAL BIT(14)
+#define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_EN BIT(15)
+#define MX7D_USBNC_USB_CTRL2_DP_DM_MASK (BIT(12) | BIT(13) | \
+ BIT(14) | BIT(15))
+
+#define MX7D_USB_OTG_PHY_CFG1 0x30
+#define MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL BIT(0)
+#define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 BIT(1)
+#define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 BIT(2)
+#define MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB BIT(3)
+#define MX7D_USB_OTG_PHY_CFG2_DRVVBUS0 BIT(16)
+
+#define MX7D_USB_OTG_PHY_CFG2 0x34
+
+#define MX7D_USB_OTG_PHY_STATUS 0x3c
+#define MX7D_USB_OTG_PHY_STATUS_LINE_STATE0 BIT(0)
+#define MX7D_USB_OTG_PHY_STATUS_LINE_STATE1 BIT(1)
+#define MX7D_USB_OTG_PHY_STATUS_VBUS_VLD BIT(3)
+#define MX7D_USB_OTG_PHY_STATUS_CHRGDET BIT(29)
#define MX6_USB_OTG_WAKEUP_BITS (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | \
MX6_BM_ID_WAKEUP)
@@ -114,6 +142,8 @@ struct usbmisc_ops {
int (*hsic_set_connect)(struct imx_usbmisc_data *data);
/* It's called during suspend/resume */
int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled);
+ /* usb charger detection */
+ int (*charger_detection)(struct imx_usbmisc_data *data);
};
struct imx_usbmisc {
@@ -609,10 +639,263 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
reg |= MX6_BM_PWR_POLARITY;
writel(reg, usbmisc->base);
- reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
- reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
- writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
- usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ /* SoC non-burst setting */
+ reg = readl(usbmisc->base);
+ writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
+
+ if (!data->hsic) {
+ reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
+ writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID
+ | MX7D_USBNC_AUTO_RESUME,
+ usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ }
+
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+ usbmisc_imx7d_set_wakeup(data, false);
+
+ return 0;
+}
+
+static int imx7d_charger_secondary_detection(struct imx_usbmisc_data *data)
+{
+ struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+ struct usb_phy *usb_phy = data->usb_phy;
+ int val;
+ unsigned long flags;
+
+ /* VDM_SRC is connected to D- and IDP_SINK is connected to D+ */
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
+ MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
+ MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL,
+ usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+ usleep_range(1000, 2000);
+
+ /*
+ * Per BC 1.2, check voltage of D+:
+ * DCP: if greater than VDAT_REF;
+ * CDP: if less than VDAT_REF.
+ */
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
+ if (val & MX7D_USB_OTG_PHY_STATUS_CHRGDET) {
+ dev_dbg(data->dev, "It is a dedicate charging port\n");
+ usb_phy->chg_type = DCP_TYPE;
+ } else {
+ dev_dbg(data->dev, "It is a charging downstream port\n");
+ usb_phy->chg_type = CDP_TYPE;
+ }
+
+ return 0;
+}
+
+static void imx7_disable_charger_detector(struct imx_usbmisc_data *data)
+{
+ struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+ unsigned long flags;
+ u32 val;
+
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ val &= ~(MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB |
+ MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
+ MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
+ MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL);
+ writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+
+ /* Set OPMODE to be 2'b00 and disable its override */
+ val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
+ writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
+
+ val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ writel(val & ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
+ usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+}
+
+static int imx7d_charger_data_contact_detect(struct imx_usbmisc_data *data)
+{
+ struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+ unsigned long flags;
+ u32 val;
+ int i, data_pin_contact_count = 0;
+
+ /* Enable Data Contact Detect (DCD) per the USB BC 1.2 */
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
+ usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+ for (i = 0; i < 100; i = i + 1) {
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
+ if (!(val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE0)) {
+ if (data_pin_contact_count++ > 5)
+ /* Data pin makes contact */
+ break;
+ usleep_range(5000, 10000);
+ } else {
+ data_pin_contact_count = 0;
+ usleep_range(5000, 6000);
+ }
+ }
+
+ /* Disable DCD after finished data contact check */
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ writel(val & ~MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
+ usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+ if (i == 100) {
+ dev_err(data->dev,
+ "VBUS is coming from a dedicated power supply.\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data)
+{
+ struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+ struct usb_phy *usb_phy = data->usb_phy;
+ unsigned long flags;
+ u32 val;
+
+ /* VDP_SRC is connected to D+ and IDM_SINK is connected to D- */
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL;
+ writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
+ MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0,
+ usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+ usleep_range(1000, 2000);
+
+ /* Check if D- is less than VDAT_REF to determine an SDP per BC 1.2 */
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
+ if (!(val & MX7D_USB_OTG_PHY_STATUS_CHRGDET)) {
+ dev_dbg(data->dev, "It is a standard downstream port\n");
+ usb_phy->chg_type = SDP_TYPE;
+ }
+
+ return 0;
+}
+
+/**
+ * Whole charger detection process:
+ * 1. OPMODE override to be non-driving
+ * 2. Data contact check
+ * 3. Primary detection
+ * 4. Secondary detection
+ * 5. Disable charger detection
+ */
+static int imx7d_charger_detection(struct imx_usbmisc_data *data)
+{
+ struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+ struct usb_phy *usb_phy = data->usb_phy;
+ unsigned long flags;
+ u32 val;
+ int ret;
+
+ /* Check if vbus is valid */
+ val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
+ if (!(val & MX7D_USB_OTG_PHY_STATUS_VBUS_VLD)) {
+ dev_err(data->dev, "vbus is error\n");
+ return -EINVAL;
+ }
+
+ /*
+ * Keep OPMODE to be non-driving mode during the whole
+ * charger detection process.
+ */
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
+ val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING;
+ writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
+
+ val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ writel(val | MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
+ usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+ ret = imx7d_charger_data_contact_detect(data);
+ if (ret)
+ return ret;
+
+ ret = imx7d_charger_primary_detection(data);
+ if (!ret && usb_phy->chg_type != SDP_TYPE)
+ ret = imx7d_charger_secondary_detection(data);
+
+ imx7_disable_charger_detector(data);
+
+ return ret;
+}
+
+static int usbmisc_imx7ulp_init(struct imx_usbmisc_data *data)
+{
+ struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+ unsigned long flags;
+ u32 reg;
+
+ if (data->index >= 1)
+ return -EINVAL;
+
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ reg = readl(usbmisc->base);
+ if (data->disable_oc) {
+ reg |= MX6_BM_OVER_CUR_DIS;
+ } else {
+ reg &= ~MX6_BM_OVER_CUR_DIS;
+
+ /*
+ * If the polarity is not configured keep it as setup by the
+ * bootloader.
+ */
+ if (data->oc_pol_configured && data->oc_pol_active_low)
+ reg |= MX6_BM_OVER_CUR_POLARITY;
+ else if (data->oc_pol_configured)
+ reg &= ~MX6_BM_OVER_CUR_POLARITY;
+ }
+ /* If the polarity is not set keep it as setup by the bootlader */
+ if (data->pwr_pol == 1)
+ reg |= MX6_BM_PWR_POLARITY;
+
+ writel(reg, usbmisc->base);
+
+ /* SoC non-burst setting */
+ reg = readl(usbmisc->base);
+ writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
+
+ if (data->hsic) {
+ reg = readl(usbmisc->base);
+ writel(reg | MX6_BM_UTMI_ON_CLOCK, usbmisc->base);
+
+ reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
+ reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
+ writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
+
+ /*
+ * For non-HSIC controller, the autoresume is enabled
+ * at MXS PHY driver (usbphy_ctrl bit18).
+ */
+ reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ writel(reg | MX7D_USBNC_AUTO_RESUME,
+ usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ } else {
+ reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
+ writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
+ usbmisc->base + MX7D_USBNC_USB_CTRL2);
+ }
spin_unlock_irqrestore(&usbmisc->lock, flags);
@@ -659,6 +942,14 @@ static const struct usbmisc_ops imx6sx_usbmisc_ops = {
static const struct usbmisc_ops imx7d_usbmisc_ops = {
.init = usbmisc_imx7d_init,
.set_wakeup = usbmisc_imx7d_set_wakeup,
+ .charger_detection = imx7d_charger_detection,
+};
+
+static const struct usbmisc_ops imx7ulp_usbmisc_ops = {
+ .init = usbmisc_imx7ulp_init,
+ .set_wakeup = usbmisc_imx7d_set_wakeup,
+ .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
+ .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
};
static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
@@ -737,6 +1028,39 @@ int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
return usbmisc->ops->hsic_set_clk(data, on);
}
EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_clk);
+
+int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect)
+{
+ struct imx_usbmisc *usbmisc;
+ struct usb_phy *usb_phy;
+ int ret = 0;
+
+ if (!data)
+ return -EINVAL;
+
+ usbmisc = dev_get_drvdata(data->dev);
+ usb_phy = data->usb_phy;
+ if (!usbmisc->ops->charger_detection)
+ return -ENOTSUPP;
+
+ if (connect) {
+ ret = usbmisc->ops->charger_detection(data);
+ if (ret) {
+ dev_err(data->dev,
+ "Error occurs during detection: %d\n",
+ ret);
+ usb_phy->chg_state = USB_CHARGER_ABSENT;
+ } else {
+ usb_phy->chg_state = USB_CHARGER_PRESENT;
+ }
+ } else {
+ usb_phy->chg_state = USB_CHARGER_ABSENT;
+ usb_phy->chg_type = UNKNOWN_TYPE;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection);
+
static const struct of_device_id usbmisc_imx_dt_ids[] = {
{
.compatible = "fsl,imx25-usbmisc",
@@ -780,7 +1104,7 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = {
},
{
.compatible = "fsl,imx7ulp-usbmisc",
- .data = &imx7d_usbmisc_ops,
+ .data = &imx7ulp_usbmisc_ops,
},
{ /* sentinel */ }
};
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index edd89b7c8f18..54167a2d28ea 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -67,6 +67,7 @@ struct ci_hdrc_platform_data {
#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
#define CI_HDRC_IMX_HSIC_ACTIVE_EVENT 2
#define CI_HDRC_IMX_HSIC_SUSPEND_EVENT 3
+#define CI_HDRC_CONTROLLER_VBUS_EVENT 4
int (*notify_event) (struct ci_hdrc *ci, unsigned event);
struct regulator *reg_vbus;
struct usb_otg_caps ci_otg_caps;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 00:16:40 +0000