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path: root/drivers/usb/mtu3
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-rw-r--r--drivers/usb/mtu3/mtu3.h2
-rw-r--r--drivers/usb/mtu3/mtu3_dr.c58
-rw-r--r--drivers/usb/mtu3/mtu3_gadget.c4
-rw-r--r--drivers/usb/mtu3/mtu3_gadget_ep0.c23
-rw-r--r--drivers/usb/mtu3/mtu3_host.c4
-rw-r--r--drivers/usb/mtu3/mtu3_hw_regs.h4
-rw-r--r--drivers/usb/mtu3/mtu3_plat.c1
7 files changed, 82 insertions, 14 deletions
diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h
index 7b6dc23d77e9..b26fffc58446 100644
--- a/drivers/usb/mtu3/mtu3.h
+++ b/drivers/usb/mtu3/mtu3.h
@@ -288,6 +288,7 @@ static inline struct ssusb_mtk *dev_to_ssusb(struct device *dev)
* MTU3_U3_IP_SLOT_DEFAULT for U3 IP
* @may_wakeup: means device's remote wakeup is enabled
* @is_self_powered: is reported in device status and the config descriptor
+ * @delayed_status: true when function drivers ask for delayed status
* @ep0_req: dummy request used while handling standard USB requests
* for GET_STATUS and SET_SEL
* @setup_buf: ep0 response buffer for GET_STATUS and SET_SEL requests
@@ -327,6 +328,7 @@ struct mtu3 {
unsigned u1_enable:1;
unsigned u2_enable:1;
unsigned is_u3_ip:1;
+ unsigned delayed_status:1;
u8 address;
u8 test_mode_nr;
diff --git a/drivers/usb/mtu3/mtu3_dr.c b/drivers/usb/mtu3/mtu3_dr.c
index 11a0d3b84c5e..560256115b23 100644
--- a/drivers/usb/mtu3/mtu3_dr.c
+++ b/drivers/usb/mtu3/mtu3_dr.c
@@ -322,23 +322,65 @@ static const struct file_operations ssusb_mode_fops = {
.release = single_release,
};
+static int ssusb_vbus_show(struct seq_file *sf, void *unused)
+{
+ struct ssusb_mtk *ssusb = sf->private;
+ struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
+
+ seq_printf(sf, "vbus state: %s\n(echo on/off)\n",
+ regulator_is_enabled(otg_sx->vbus) ? "on" : "off");
+
+ return 0;
+}
+
+static int ssusb_vbus_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ssusb_vbus_show, inode->i_private);
+}
+
+static ssize_t ssusb_vbus_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct seq_file *sf = file->private_data;
+ struct ssusb_mtk *ssusb = sf->private;
+ struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
+ char buf[16];
+ bool enable;
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (kstrtobool(buf, &enable)) {
+ dev_err(ssusb->dev, "wrong setting\n");
+ return -EINVAL;
+ }
+
+ ssusb_set_vbus(otg_sx, enable);
+
+ return count;
+}
+
+static const struct file_operations ssusb_vbus_fops = {
+ .open = ssusb_vbus_open,
+ .write = ssusb_vbus_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static void ssusb_debugfs_init(struct ssusb_mtk *ssusb)
{
struct dentry *root;
- struct dentry *file;
root = debugfs_create_dir(dev_name(ssusb->dev), usb_debug_root);
- if (IS_ERR_OR_NULL(root)) {
- if (!root)
- dev_err(ssusb->dev, "create debugfs root failed\n");
+ if (!root) {
+ dev_err(ssusb->dev, "create debugfs root failed\n");
return;
}
ssusb->dbgfs_root = root;
- file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
- ssusb, &ssusb_mode_fops);
- if (!file)
- dev_dbg(ssusb->dev, "create debugfs mode failed\n");
+ debugfs_create_file("mode", 0644, root, ssusb, &ssusb_mode_fops);
+ debugfs_create_file("vbus", 0644, root, ssusb, &ssusb_vbus_fops);
}
static void ssusb_debugfs_exit(struct ssusb_mtk *ssusb)
diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index 9dd2441b4fa1..434fca58143c 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -663,6 +663,7 @@ int mtu3_gadget_setup(struct mtu3 *mtu)
mtu->g.sg_supported = 0;
mtu->g.name = MTU3_DRIVER_NAME;
mtu->is_active = 0;
+ mtu->delayed_status = false;
mtu3_gadget_init_eps(mtu);
@@ -727,4 +728,7 @@ void mtu3_gadget_reset(struct mtu3 *mtu)
mtu->address = 0;
mtu->ep0_state = MU3D_EP0_STATE_SETUP;
mtu->may_wakeup = 0;
+ mtu->u1_enable = 0;
+ mtu->u2_enable = 0;
+ mtu->delayed_status = false;
}
diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c
index 2d7427b48775..958d74dd2b78 100644
--- a/drivers/usb/mtu3/mtu3_gadget_ep0.c
+++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c
@@ -16,6 +16,8 @@
*
*/
+#include <linux/usb/composite.h>
+
#include "mtu3.h"
/* ep0 is always mtu3->in_eps[0] */
@@ -150,6 +152,7 @@ static void ep0_stall_set(struct mtu3_ep *mep0, bool set, u32 pktrdy)
csr = (csr & ~EP0_SENDSTALL) | EP0_SENTSTALL;
mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr);
+ mtu->delayed_status = false;
mtu->ep0_state = MU3D_EP0_STATE_SETUP;
dev_dbg(mtu->dev, "ep0: %s STALL, ep0_state: %s\n",
@@ -656,6 +659,9 @@ stall:
finish:
if (mtu->test_mode) {
; /* nothing to do */
+ } else if (handled == USB_GADGET_DELAYED_STATUS) {
+ /* handle the delay STATUS phase till receive ep_queue on ep0 */
+ mtu->delayed_status = true;
} else if (le16_to_cpu(setup.wLength) == 0) { /* no data stage */
mtu3_writel(mbase, U3D_EP0CSR,
@@ -775,9 +781,6 @@ static int ep0_queue(struct mtu3_ep *mep, struct mtu3_request *mreq)
dev_dbg(mtu->dev, "%s %s (ep0_state: %s), len#%d\n", __func__,
mep->name, decode_ep0_state(mtu), mreq->request.length);
- if (!list_empty(&mep->req_list))
- return -EBUSY;
-
switch (mtu->ep0_state) {
case MU3D_EP0_STATE_SETUP:
case MU3D_EP0_STATE_RX: /* control-OUT data */
@@ -789,6 +792,20 @@ static int ep0_queue(struct mtu3_ep *mep, struct mtu3_request *mreq)
return -EINVAL;
}
+ if (mtu->delayed_status) {
+ u32 csr;
+
+ mtu->delayed_status = false;
+ csr = mtu3_readl(mtu->mac_base, U3D_EP0CSR) & EP0_W1C_BITS;
+ csr |= EP0_SETUPPKTRDY | EP0_DATAEND;
+ mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr);
+ /* needn't giveback the request for handling delay STATUS */
+ return 0;
+ }
+
+ if (!list_empty(&mep->req_list))
+ return -EBUSY;
+
list_add_tail(&mreq->list, &mep->req_list);
/* sequence #1, IN ... start writing the data */
diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c
index cd4d01087855..e42d308b8dc2 100644
--- a/drivers/usb/mtu3/mtu3_host.c
+++ b/drivers/usb/mtu3/mtu3_host.c
@@ -258,8 +258,8 @@ int ssusb_host_init(struct ssusb_mtk *ssusb, struct device_node *parent_dn)
ret = of_platform_populate(parent_dn, NULL, NULL, parent_dev);
if (ret) {
- dev_dbg(parent_dev, "failed to create child devices at %s\n",
- parent_dn->full_name);
+ dev_dbg(parent_dev, "failed to create child devices at %pOF\n",
+ parent_dn);
return ret;
}
diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h
index 212367295276..06b29664470f 100644
--- a/drivers/usb/mtu3/mtu3_hw_regs.h
+++ b/drivers/usb/mtu3/mtu3_hw_regs.h
@@ -462,10 +462,12 @@
#define SSUSB_U3_PORT_DIS BIT(0)
/* U3D_SSUSB_U2_CTRL_0P */
+#define SSUSB_U2_PORT_VBUSVALID BIT(9)
#define SSUSB_U2_PORT_OTG_SEL BIT(7)
-#define SSUSB_U2_PORT_HOST_SEL BIT(2)
+#define SSUSB_U2_PORT_HOST BIT(2)
#define SSUSB_U2_PORT_PDN BIT(1)
#define SSUSB_U2_PORT_DIS BIT(0)
+#define SSUSB_U2_PORT_HOST_SEL (SSUSB_U2_PORT_VBUSVALID | SSUSB_U2_PORT_HOST)
/* U3D_SSUSB_DEV_RST_CTRL */
#define SSUSB_DEV_SW_RST BIT(0)
diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index 0d3ebb353e08..088e3e685c4f 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -500,6 +500,7 @@ static const struct dev_pm_ops mtu3_pm_ops = {
static const struct of_device_id mtu3_of_match[] = {
{.compatible = "mediatek,mt8173-mtu3",},
+ {.compatible = "mediatek,mtu3",},
{},
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.