#include <linux/device.h>
#include <linux/types.h>
#include <linux/spinlock.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include "debug.h"
/**
- * hw_register_read: reads all device registers (execute without interruption)
- * @buf: destination buffer
- * @size: buffer size
- *
- * This function returns number of registers read
+ * ci_device_show: prints information about device capabilities and status
*/
-static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size)
+static int ci_device_show(struct seq_file *s, void *data)
{
- unsigned i;
-
- if (size > ci->hw_bank.size)
- size = ci->hw_bank.size;
-
- for (i = 0; i < size; i++)
- buf[i] = hw_read(ci, i * sizeof(u32), ~0);
-
- return size;
-}
-
-/**
- * hw_register_write: writes to register
- * @addr: register address
- * @data: register value
- *
- * This function returns an error code
- */
-static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data)
-{
- /* align */
- addr /= sizeof(u32);
+ struct ci13xxx *ci = s->private;
+ struct usb_gadget *gadget = &ci->gadget;
- if (addr >= ci->hw_bank.size)
- return -EINVAL;
+ seq_printf(s, "speed = %d\n", gadget->speed);
+ seq_printf(s, "max_speed = %d\n", gadget->max_speed);
+ seq_printf(s, "is_otg = %d\n", gadget->is_otg);
+ seq_printf(s, "is_a_peripheral = %d\n", gadget->is_a_peripheral);
+ seq_printf(s, "b_hnp_enable = %d\n", gadget->b_hnp_enable);
+ seq_printf(s, "a_hnp_support = %d\n", gadget->a_hnp_support);
+ seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support);
+ seq_printf(s, "name = %s\n",
+ (gadget->name ? gadget->name : ""));
+
+ if (!ci->driver)
+ return 0;
- /* align */
- addr *= sizeof(u32);
+ seq_printf(s, "gadget function = %s\n",
+ (ci->driver->function ? ci->driver->function : ""));
+ seq_printf(s, "gadget max speed = %d\n", ci->driver->max_speed);
- hw_write(ci, addr, ~0, data);
return 0;
}
-/**
- * hw_intr_clear: disables interrupt & clears interrupt status (execute without
- * interruption)
- * @n: interrupt bit
- *
- * This function returns an error code
- */
-static int hw_intr_clear(struct ci13xxx *ci, int n)
+static int ci_device_open(struct inode *inode, struct file *file)
{
- if (n >= REG_BITS)
- return -EINVAL;
-
- hw_write(ci, OP_USBINTR, BIT(n), 0);
- hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
- return 0;
+ return single_open(file, ci_device_show, inode->i_private);
}
-/**
- * hw_intr_force: enables interrupt & forces interrupt status (execute without
- * interruption)
- * @n: interrupt bit
- *
- * This function returns an error code
- */
-static int hw_intr_force(struct ci13xxx *ci, int n)
-{
- if (n >= REG_BITS)
- return -EINVAL;
-
- hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
- hw_write(ci, OP_USBINTR, BIT(n), BIT(n));
- hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
- hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0);
- return 0;
-}
-
-/**
- * show_device: prints information about device capabilities and status
- *
- * Check "device.h" for details
- */
-static ssize_t show_device(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- struct usb_gadget *gadget = &ci->gadget;
- int n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- n += scnprintf(buf + n, PAGE_SIZE - n, "speed = %d\n",
- gadget->speed);
- n += scnprintf(buf + n, PAGE_SIZE - n, "max_speed = %d\n",
- gadget->max_speed);
- n += scnprintf(buf + n, PAGE_SIZE - n, "is_otg = %d\n",
- gadget->is_otg);
- n += scnprintf(buf + n, PAGE_SIZE - n, "is_a_peripheral = %d\n",
- gadget->is_a_peripheral);
- n += scnprintf(buf + n, PAGE_SIZE - n, "b_hnp_enable = %d\n",
- gadget->b_hnp_enable);
- n += scnprintf(buf + n, PAGE_SIZE - n, "a_hnp_support = %d\n",
- gadget->a_hnp_support);
- n += scnprintf(buf + n, PAGE_SIZE - n, "a_alt_hnp_support = %d\n",
- gadget->a_alt_hnp_support);
- n += scnprintf(buf + n, PAGE_SIZE - n, "name = %s\n",
- (gadget->name ? gadget->name : ""));
-
- return n;
-}
-static DEVICE_ATTR(device, S_IRUSR, show_device, NULL);
-
-/**
- * show_driver: prints information about attached gadget (if any)
- *
- * Check "device.h" for details
- */
-static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- struct usb_gadget_driver *driver = ci->driver;
- int n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- if (driver == NULL)
- return scnprintf(buf, PAGE_SIZE,
- "There is no gadget attached!\n");
-
- n += scnprintf(buf + n, PAGE_SIZE - n, "function = %s\n",
- (driver->function ? driver->function : ""));
- n += scnprintf(buf + n, PAGE_SIZE - n, "max speed = %d\n",
- driver->max_speed);
-
- return n;
-}
-static DEVICE_ATTR(driver, S_IRUSR, show_driver, NULL);
+static const struct file_operations ci_device_fops = {
+ .open = ci_device_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_port_test: reads port test mode
- *
- * Check "device.h" for details
+ * ci_port_test_show: reads port test mode
*/
-static ssize_t show_port_test(struct device *dev,
- struct device_attribute *attr, char *buf)
+static int ci_port_test_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
unsigned mode;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "EINVAL\n");
- return 0;
- }
-
spin_lock_irqsave(&ci->lock, flags);
mode = hw_port_test_get(ci);
spin_unlock_irqrestore(&ci->lock, flags);
- return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
+ seq_printf(s, "mode = %u\n", mode);
+
+ return 0;
}
/**
- * store_port_test: writes port test mode
- *
- * Check "device.h" for details
+ * ci_port_test_write: writes port test mode
*/
-static ssize_t store_port_test(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct seq_file *s = file->private_data;
+ struct ci13xxx *ci = s->private;
unsigned long flags;
unsigned mode;
+ char buf[32];
+ int ret;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
+ if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
- if (sscanf(buf, "%u", &mode) != 1) {
- dev_err(ci->dev, "<mode>: set port test mode");
- goto done;
- }
+ if (sscanf(buf, "%u", &mode) != 1)
+ return -EINVAL;
spin_lock_irqsave(&ci->lock, flags);
- if (hw_port_test_set(ci, mode))
- dev_err(ci->dev, "invalid mode\n");
+ ret = hw_port_test_set(ci, mode);
spin_unlock_irqrestore(&ci->lock, flags);
- done:
- return count;
+ return ret ? ret : count;
}
-static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR,
- show_port_test, store_port_test);
+
+static int ci_port_test_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ci_port_test_show, inode->i_private);
+}
+
+static const struct file_operations ci_port_test_fops = {
+ .open = ci_port_test_open,
+ .write = ci_port_test_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_qheads: DMA contents of all queue heads
- *
- * Check "device.h" for details
+ * ci_qheads_show: DMA contents of all queue heads
*/
-static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_qheads_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- unsigned i, j, n = 0;
+ unsigned i, j;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
+ if (ci->role != CI_ROLE_GADGET) {
+ seq_printf(s, "not in gadget mode\n");
return 0;
}
struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i];
struct ci13xxx_ep *mEpTx =
&ci->ci13xxx_ep[i + ci->hw_ep_max/2];
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "EP=%02i: RX=%08X TX=%08X\n",
- i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
- for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) {
- n += scnprintf(buf + n, PAGE_SIZE - n,
- " %04X: %08X %08X\n", j,
- *((u32 *)mEpRx->qh.ptr + j),
- *((u32 *)mEpTx->qh.ptr + j));
- }
+ seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n",
+ i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
+ for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++)
+ seq_printf(s, " %04X: %08X %08X\n", j,
+ *((u32 *)mEpRx->qh.ptr + j),
+ *((u32 *)mEpTx->qh.ptr + j));
}
spin_unlock_irqrestore(&ci->lock, flags);
- return n;
+ return 0;
}
-static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
-/**
- * show_registers: dumps all registers
- *
- * Check "device.h" for details
- */
-#define DUMP_ENTRIES 512
-static ssize_t show_registers(struct device *dev,
- struct device_attribute *attr, char *buf)
+static int ci_qheads_open(struct inode *inode, struct file *file)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- u32 *dump;
- unsigned i, k, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
- if (!dump) {
- dev_err(ci->dev, "%s: out of memory\n", __func__);
- return 0;
- }
-
- spin_lock_irqsave(&ci->lock, flags);
- k = hw_register_read(ci, dump, DUMP_ENTRIES);
- spin_unlock_irqrestore(&ci->lock, flags);
-
- for (i = 0; i < k; i++) {
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "reg[0x%04X] = 0x%08X\n",
- i * (unsigned)sizeof(u32), dump[i]);
- }
- kfree(dump);
-
- return n;
+ return single_open(file, ci_qheads_show, inode->i_private);
}
-/**
- * store_registers: writes value to register address
- *
- * Check "device.h" for details
- */
-static ssize_t store_registers(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long addr, data, flags;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
-
- if (sscanf(buf, "%li %li", &addr, &data) != 2) {
- dev_err(ci->dev,
- "<addr> <data>: write data to register address\n");
- goto done;
- }
-
- spin_lock_irqsave(&ci->lock, flags);
- if (hw_register_write(ci, addr, data))
- dev_err(ci->dev, "invalid address range\n");
- spin_unlock_irqrestore(&ci->lock, flags);
-
- done:
- return count;
-}
-static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR,
- show_registers, store_registers);
+static const struct file_operations ci_qheads_fops = {
+ .open = ci_qheads_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_requests: DMA contents of all requests currently queued (all endpts)
- *
- * Check "device.h" for details
+ * ci_requests_show: DMA contents of all requests currently queued (all endpts)
*/
-static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_requests_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
struct list_head *ptr = NULL;
struct ci13xxx_req *req = NULL;
- unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
+ unsigned i, j, qsize = sizeof(struct ci13xxx_td)/sizeof(u32);
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
+ if (ci->role != CI_ROLE_GADGET) {
+ seq_printf(s, "not in gadget mode\n");
return 0;
}
spin_lock_irqsave(&ci->lock, flags);
for (i = 0; i < ci->hw_ep_max; i++)
- list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue)
- {
+ list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) {
req = list_entry(ptr, struct ci13xxx_req, queue);
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "EP=%02i: TD=%08X %s\n",
- i % ci->hw_ep_max/2, (u32)req->dma,
- ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
+ seq_printf(s, "EP=%02i: TD=%08X %s\n",
+ i % ci->hw_ep_max/2, (u32)req->dma,
+ ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
- for (j = 0; j < qSize; j++)
- n += scnprintf(buf + n, PAGE_SIZE - n,
- " %04X: %08X\n", j,
- *((u32 *)req->ptr + j));
+ for (j = 0; j < qsize; j++)
+ seq_printf(s, " %04X: %08X\n", j,
+ *((u32 *)req->ptr + j));
}
spin_unlock_irqrestore(&ci->lock, flags);
- return n;
+ return 0;
+}
+
+static int ci_requests_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ci_requests_show, inode->i_private);
}
-static DEVICE_ATTR(requests, S_IRUSR, show_requests, NULL);
+
+static const struct file_operations ci_requests_fops = {
+ .open = ci_requests_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
* dbg_create_files: initializes the attribute interface
- * @dev: device
+ * @ci: device
*
* This function returns an error code
*/
-int dbg_create_files(struct device *dev)
+int dbg_create_files(struct ci13xxx *ci)
{
- int retval = 0;
-
- if (dev == NULL)
- return -EINVAL;
- retval = device_create_file(dev, &dev_attr_device);
- if (retval)
- goto done;
- retval = device_create_file(dev, &dev_attr_driver);
- if (retval)
- goto rm_device;
- retval = device_create_file(dev, &dev_attr_port_test);
- if (retval)
- goto rm_driver;
- retval = device_create_file(dev, &dev_attr_qheads);
- if (retval)
- goto rm_port_test;
- retval = device_create_file(dev, &dev_attr_registers);
- if (retval)
- goto rm_qheads;
- retval = device_create_file(dev, &dev_attr_requests);
- if (retval)
- goto rm_registers;
- return 0;
-
- rm_registers:
- device_remove_file(dev, &dev_attr_registers);
- rm_qheads:
- device_remove_file(dev, &dev_attr_qheads);
- rm_port_test:
- device_remove_file(dev, &dev_attr_port_test);
- rm_driver:
- device_remove_file(dev, &dev_attr_driver);
- rm_device:
- device_remove_file(dev, &dev_attr_device);
- done:
- return retval;
+ struct dentry *dent;
+
+ ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL);
+ if (!ci->debugfs)
+ return -ENOMEM;
+
+ dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
+ &ci_device_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs,
+ ci, &ci_port_test_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
+ &ci_qheads_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
+ &ci_requests_fops);
+ if (dent)
+ return 0;
+err:
+ debugfs_remove_recursive(ci->debugfs);
+ return -ENOMEM;
}
/**
* dbg_remove_files: destroys the attribute interface
- * @dev: device
- *
- * This function returns an error code
+ * @ci: device
*/
-int dbg_remove_files(struct device *dev)
+void dbg_remove_files(struct ci13xxx *ci)
{
- if (dev == NULL)
- return -EINVAL;
- device_remove_file(dev, &dev_attr_requests);
- device_remove_file(dev, &dev_attr_registers);
- device_remove_file(dev, &dev_attr_qheads);
- device_remove_file(dev, &dev_attr_port_test);
- device_remove_file(dev, &dev_attr_driver);
- device_remove_file(dev, &dev_attr_device);
- return 0;
+ debugfs_remove_recursive(ci->debugfs);
}
projects / karo-tx-linux.git / blobdiff