#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
+#include <linux/debugfs.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <linux/freezer.h>
#include <linux/iopoll.h>
#include <linux/reset.h>
+#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
+#include <linux/usb/ch9.h>
#include "core.h"
#include "io.h"
#include "../host/xhci.h"
-#define DWC3_ROCKCHIP_AUTOSUSPEND_DELAY 500 /* ms */
-#define PERIPHERAL_DISCONNECT_TIMEOUT 1000000 /* us */
+#define DWC3_ROCKCHIP_AUTOSUSPEND_DELAY 500 /* ms */
+#define PERIPHERAL_DISCONNECT_TIMEOUT 1000000 /* us */
+#define WAIT_FOR_HCD_READY_TIMEOUT 5000000 /* us */
+#define XHCI_TSTCTRL_MASK (0xf << 28)
struct dwc3_rockchip {
int num_clocks;
struct device *dev;
struct clk **clks;
struct dwc3 *dwc;
+ struct dentry *root;
struct reset_control *otg_rst;
struct extcon_dev *edev;
struct notifier_block device_nb;
struct mutex lock;
};
+static int dwc3_rockchip_host_testmode_show(struct seq_file *s, void *unused)
+{
+ struct dwc3_rockchip *rockchip = s->private;
+ struct dwc3 *dwc = rockchip->dwc;
+ struct usb_hcd *hcd = dev_get_drvdata(&dwc->xhci->dev);
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ __le32 __iomem **port_array;
+ u32 reg;
+
+ if (rockchip->dwc->dr_mode == USB_DR_MODE_PERIPHERAL) {
+ dev_warn(rockchip->dev, "USB HOST not support!\n");
+ return 0;
+ }
+
+ if (hcd->state == HC_STATE_HALT) {
+ dev_warn(rockchip->dev, "HOST is halted, set test mode first!\n");
+ return 0;
+ }
+
+ port_array = xhci->usb2_ports;
+ reg = readl(port_array[0] + PORTPMSC);
+ reg &= XHCI_TSTCTRL_MASK;
+ reg >>= 28;
+
+ switch (reg) {
+ case 0:
+ seq_puts(s, "U2: no test\n");
+ break;
+ case TEST_J:
+ seq_puts(s, "U2: test_j\n");
+ break;
+ case TEST_K:
+ seq_puts(s, "U2: test_k\n");
+ break;
+ case TEST_SE0_NAK:
+ seq_puts(s, "U2: test_se0_nak\n");
+ break;
+ case TEST_PACKET:
+ seq_puts(s, "U2: test_packet\n");
+ break;
+ case TEST_FORCE_EN:
+ seq_puts(s, "U2: test_force_enable\n");
+ break;
+ default:
+ seq_printf(s, "U2: UNKNOWN %d\n", reg);
+ }
+
+ port_array = xhci->usb3_ports;
+ reg = readl(port_array[0]);
+ reg &= PORT_PLS_MASK;
+ if (reg == USB_SS_PORT_LS_COMP_MOD)
+ seq_puts(s, "U3: compliance mode\n");
+ else
+ seq_printf(s, "U3: UNKNOWN %d\n", reg >> 5);
+
+ return 0;
+}
+
+static int dwc3_rockchip_host_testmode_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, dwc3_rockchip_host_testmode_show,
+ inode->i_private);
+}
+
+/**
+ * dwc3_rockchip_set_test_mode - Enables USB2/USB3 HOST Test Modes
+ * @rockchip: pointer to our context structure
+ * @mode: the mode to set (U2: J, K SE0 NAK, Test_packet,
+ * Force Enable; U3: Compliance mode)
+ *
+ * This function will return 0 on success or -EINVAL if wrong Test
+ * Selector is passed.
+ */
+static int dwc3_rockchip_set_test_mode(struct dwc3_rockchip *rockchip,
+ u32 mode)
+{
+ struct dwc3 *dwc = rockchip->dwc;
+ struct usb_hcd *hcd = dev_get_drvdata(&dwc->xhci->dev);
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ __le32 __iomem **port_array;
+ int ret, val;
+ u32 reg;
+
+ ret = readx_poll_timeout(readl, &hcd->state, val,
+ val != HC_STATE_HALT, 1000,
+ WAIT_FOR_HCD_READY_TIMEOUT);
+ if (ret < 0) {
+ dev_err(rockchip->dev, "Wait for HCD ready timeout\n");
+ return -EINVAL;
+ }
+
+ switch (mode) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ port_array = xhci->usb2_ports;
+ reg = readl(port_array[0] + PORTPMSC);
+ reg &= ~XHCI_TSTCTRL_MASK;
+ reg |= mode << 28;
+ writel(reg, port_array[0] + PORTPMSC);
+ break;
+ case USB_SS_PORT_LS_COMP_MOD:
+ port_array = xhci->usb3_ports;
+ xhci_set_link_state(xhci, port_array, 0, mode);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ dev_info(rockchip->dev, "set USB HOST test mode successfully!\n");
+
+ return 0;
+}
+
+static ssize_t dwc3_rockchip_host_testmode_write(struct file *file,
+ const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *s = file->private_data;
+ struct dwc3_rockchip *rockchip = s->private;
+ struct extcon_dev *edev = rockchip->edev;
+ u32 testmode = 0;
+ bool flip = 0;
+ char buf[32];
+ union extcon_property_value property;
+
+ if (rockchip->dwc->dr_mode == USB_DR_MODE_PERIPHERAL) {
+ dev_warn(rockchip->dev, "USB HOST not support!\n");
+ return -EINVAL;
+ }
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (!strncmp(buf, "test_j", 6)) {
+ testmode = TEST_J;
+ } else if (!strncmp(buf, "test_k", 6)) {
+ testmode = TEST_K;
+ } else if (!strncmp(buf, "test_se0_nak", 12)) {
+ testmode = TEST_SE0_NAK;
+ } else if (!strncmp(buf, "test_packet", 11)) {
+ testmode = TEST_PACKET;
+ } else if (!strncmp(buf, "test_force_enable", 17)) {
+ testmode = TEST_FORCE_EN;
+ } else if (!strncmp(buf, "test_u3", 7)) {
+ testmode = USB_SS_PORT_LS_COMP_MOD;
+ } else if (!strncmp(buf, "test_flip_u3", 12)) {
+ testmode = USB_SS_PORT_LS_COMP_MOD;
+ flip = 1;
+ } else {
+ dev_warn(rockchip->dev, "Test cmd not support!\n");
+ return -EINVAL;
+ }
+
+ if (edev && !extcon_get_cable_state_(edev, EXTCON_USB_HOST)) {
+ if (extcon_get_cable_state_(edev, EXTCON_USB) > 0)
+ extcon_set_cable_state_(edev, EXTCON_USB, false);
+
+ property.intval = flip;
+ extcon_set_property(edev, EXTCON_USB_HOST,
+ EXTCON_PROP_USB_TYPEC_POLARITY, property);
+ extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
+
+ /* Add a delay 1~1.5s to wait for XHCI HCD init */
+ usleep_range(1000000, 1500000);
+ }
+
+ dwc3_rockchip_set_test_mode(rockchip, testmode);
+
+ return count;
+}
+
+static const struct file_operations dwc3_host_testmode_fops = {
+ .open = dwc3_rockchip_host_testmode_open,
+ .write = dwc3_rockchip_host_testmode_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void dwc3_rockchip_debugfs_init(struct dwc3_rockchip *rockchip)
+{
+ struct dentry *root;
+ struct dentry *file;
+
+ root = debugfs_create_dir(dev_name(rockchip->dev), NULL);
+ if (IS_ERR_OR_NULL(root)) {
+ if (!root)
+ dev_err(rockchip->dev, "Can't create debugfs root\n");
+ return;
+ }
+ rockchip->root = root;
+
+ if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
+ IS_ENABLED(CONFIG_USB_DWC3_HOST)) {
+ file = debugfs_create_file("host_testmode", S_IRUSR | S_IWUSR,
+ root, rockchip,
+ &dwc3_host_testmode_fops);
+ if (!file)
+ dev_dbg(rockchip->dev, "Can't create debugfs host_testmode\n");
+ }
+}
+
static int dwc3_rockchip_device_notifier(struct notifier_block *nb,
unsigned long event, void *ptr)
{
schedule_work(&rockchip->otg_work);
}
+ dwc3_rockchip_debugfs_init(rockchip);
+
mutex_unlock(&rockchip->lock);
return ret;
projects / firefly-linux-kernel-4.4.55.git / commitdiff