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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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USB: pxa2xx_udc: use debugfs not procfs
Use debugfs instead of /proc/driver/udc Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dmitry Baryshkov
Greg Kroah-Hartman
parent
f3db6e8203
commit
040fa1b962
@ -24,7 +24,7 @@
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*
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*/
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// #define VERBOSE DBG_VERBOSE
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/* #define VERBOSE_DEBUG */
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#include <linux/device.h>
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#include <linux/module.h>
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@ -38,13 +38,14 @@
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#include <linux/timer.h>
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#include <linux/list.h>
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#include <linux/interrupt.h>
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#include <linux/proc_fs.h>
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#include <linux/mm.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/irq.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/seq_file.h>
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#include <linux/debugfs.h>
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#include <asm/byteorder.h>
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#include <asm/dma.h>
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@ -679,7 +680,7 @@ pxa2xx_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
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/* kickstart this i/o queue? */
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if (list_empty(&ep->queue) && !ep->stopped) {
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if (ep->desc == 0 /* ep0 */) {
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if (ep->desc == NULL/* ep0 */) {
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unsigned length = _req->length;
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switch (dev->ep0state) {
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@ -733,7 +734,7 @@ pxa2xx_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
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}
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/* pio or dma irq handler advances the queue. */
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if (likely (req != 0))
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if (likely(req != NULL))
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list_add_tail(&req->queue, &ep->queue);
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local_irq_restore(flags);
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@ -993,45 +994,32 @@ static const struct usb_gadget_ops pxa2xx_udc_ops = {
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/*-------------------------------------------------------------------------*/
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#ifdef CONFIG_USB_GADGET_DEBUG_FILES
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static const char proc_node_name [] = "driver/udc";
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#ifdef CONFIG_USB_GADGET_DEBUG_FS
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static int
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udc_proc_read(char *page, char **start, off_t off, int count,
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int *eof, void *_dev)
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udc_seq_show(struct seq_file *m, void *d)
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{
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char *buf = page;
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struct pxa2xx_udc *dev = _dev;
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char *next = buf;
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unsigned size = count;
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struct pxa2xx_udc *dev = m->private;
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unsigned long flags;
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int i, t;
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int i;
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u32 tmp;
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if (off != 0)
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return 0;
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local_irq_save(flags);
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/* basic device status */
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t = scnprintf(next, size, DRIVER_DESC "\n"
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seq_printf(m, DRIVER_DESC "\n"
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"%s version: %s\nGadget driver: %s\nHost %s\n\n",
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driver_name, DRIVER_VERSION SIZE_STR "(pio)",
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dev->driver ? dev->driver->driver.name : "(none)",
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is_vbus_present() ? "full speed" : "disconnected");
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size -= t;
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next += t;
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/* registers for device and ep0 */
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t = scnprintf(next, size,
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seq_printf(m,
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"uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
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UICR1, UICR0, USIR1, USIR0, UFNRH, UFNRL);
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size -= t;
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next += t;
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tmp = UDCCR;
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t = scnprintf(next, size,
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seq_printf(m,
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"udccr %02X =%s%s%s%s%s%s%s%s\n", tmp,
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(tmp & UDCCR_REM) ? " rem" : "",
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(tmp & UDCCR_RSTIR) ? " rstir" : "",
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@ -1041,11 +1029,9 @@ udc_proc_read(char *page, char **start, off_t off, int count,
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(tmp & UDCCR_RSM) ? " rsm" : "",
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(tmp & UDCCR_UDA) ? " uda" : "",
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(tmp & UDCCR_UDE) ? " ude" : "");
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size -= t;
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next += t;
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tmp = UDCCS0;
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t = scnprintf(next, size,
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seq_printf(m,
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"udccs0 %02X =%s%s%s%s%s%s%s%s\n", tmp,
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(tmp & UDCCS0_SA) ? " sa" : "",
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(tmp & UDCCS0_RNE) ? " rne" : "",
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@ -1055,28 +1041,22 @@ udc_proc_read(char *page, char **start, off_t off, int count,
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(tmp & UDCCS0_FTF) ? " ftf" : "",
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(tmp & UDCCS0_IPR) ? " ipr" : "",
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(tmp & UDCCS0_OPR) ? " opr" : "");
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size -= t;
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next += t;
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if (dev->has_cfr) {
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tmp = UDCCFR;
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t = scnprintf(next, size,
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seq_printf(m,
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"udccfr %02X =%s%s\n", tmp,
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(tmp & UDCCFR_AREN) ? " aren" : "",
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(tmp & UDCCFR_ACM) ? " acm" : "");
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size -= t;
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next += t;
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}
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if (!is_vbus_present() || !dev->driver)
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goto done;
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t = scnprintf(next, size, "ep0 IN %lu/%lu, OUT %lu/%lu\nirqs %lu\n\n",
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seq_printf(m, "ep0 IN %lu/%lu, OUT %lu/%lu\nirqs %lu\n\n",
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dev->stats.write.bytes, dev->stats.write.ops,
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dev->stats.read.bytes, dev->stats.read.ops,
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dev->stats.irqs);
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size -= t;
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next += t;
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/* dump endpoint queues */
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for (i = 0; i < PXA_UDC_NUM_ENDPOINTS; i++) {
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@ -1084,61 +1064,68 @@ udc_proc_read(char *page, char **start, off_t off, int count,
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struct pxa2xx_request *req;
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if (i != 0) {
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const struct usb_endpoint_descriptor *d;
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const struct usb_endpoint_descriptor *desc;
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d = ep->desc;
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if (!d)
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desc = ep->desc;
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if (!desc)
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continue;
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tmp = *dev->ep [i].reg_udccs;
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t = scnprintf(next, size,
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seq_printf(m,
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"%s max %d %s udccs %02x irqs %lu\n",
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ep->ep.name, le16_to_cpu (d->wMaxPacketSize),
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ep->ep.name, le16_to_cpu(desc->wMaxPacketSize),
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"pio", tmp, ep->pio_irqs);
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/* TODO translate all five groups of udccs bits! */
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} else /* ep0 should only have one transfer queued */
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t = scnprintf(next, size, "ep0 max 16 pio irqs %lu\n",
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seq_printf(m, "ep0 max 16 pio irqs %lu\n",
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ep->pio_irqs);
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if (t <= 0 || t > size)
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goto done;
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size -= t;
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next += t;
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if (list_empty(&ep->queue)) {
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t = scnprintf(next, size, "\t(nothing queued)\n");
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if (t <= 0 || t > size)
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goto done;
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size -= t;
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next += t;
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seq_printf(m, "\t(nothing queued)\n");
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continue;
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}
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list_for_each_entry(req, &ep->queue, queue) {
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t = scnprintf(next, size,
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seq_printf(m,
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"\treq %p len %d/%d buf %p\n",
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&req->req, req->req.actual,
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req->req.length, req->req.buf);
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if (t <= 0 || t > size)
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goto done;
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size -= t;
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next += t;
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}
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}
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done:
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local_irq_restore(flags);
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*eof = 1;
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return count - size;
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return 0;
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}
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#define create_proc_files() \
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create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev)
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#define remove_proc_files() \
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remove_proc_entry(proc_node_name, NULL)
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static int
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udc_debugfs_open(struct inode *inode, struct file *file)
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{
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return single_open(file, udc_seq_show, inode->i_private);
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}
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static const struct file_operations debug_fops = {
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.open = udc_debugfs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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.owner = THIS_MODULE,
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};
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#define create_debug_files(dev) \
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do { \
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dev->debugfs_udc = debugfs_create_file(dev->gadget.name, \
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S_IRUGO, NULL, dev, &debug_fops); \
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} while (0)
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#define remove_debug_files(dev) \
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do { \
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if (dev->debugfs_udc) \
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debugfs_remove(dev->debugfs_udc); \
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} while (0)
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#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
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#define create_proc_files() do {} while (0)
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#define remove_proc_files() do {} while (0)
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#define create_debug_files(dev) do {} while (0)
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#define remove_debug_files(dev) do {} while (0)
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#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
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@ -2246,7 +2233,7 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
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goto err_vbus_irq;
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}
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}
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create_proc_files();
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create_debug_files(dev);
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return 0;
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@ -2283,7 +2270,7 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev)
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return -EBUSY;
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udc_disable(dev);
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remove_proc_files();
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remove_debug_files(dev);
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if (dev->got_irq) {
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free_irq(platform_get_irq(pdev, 0), dev);
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@ -129,6 +129,10 @@ struct pxa2xx_udc {
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struct pxa2xx_udc_mach_info *mach;
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u64 dma_mask;
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struct pxa2xx_ep ep [PXA_UDC_NUM_ENDPOINTS];
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#ifdef CONFIG_USB_GADGET_DEBUG_FS
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struct dentry *debugfs_udc;
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#endif
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};
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/*-------------------------------------------------------------------------*/
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@ -155,13 +159,15 @@ static struct pxa2xx_udc *the_controller;
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#ifdef DEBUG
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static int is_vbus_present(void);
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static const char *state_name[] = {
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"EP0_IDLE",
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"EP0_IN_DATA_PHASE", "EP0_OUT_DATA_PHASE",
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"EP0_END_XFER", "EP0_STALL"
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};
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#ifdef VERBOSE
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#ifdef VERBOSE_DEBUG
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# define UDC_DEBUG DBG_VERBOSE
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#else
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# define UDC_DEBUG DBG_NORMAL
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@ -207,7 +213,7 @@ dump_state(struct pxa2xx_udc *dev)
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unsigned i;
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DMSG("%s %s, uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
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is_usb_connected() ? "host " : "disconnected",
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is_vbus_present() ? "host " : "disconnected",
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state_name[dev->ep0state],
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UICR1, UICR0, USIR1, USIR0, UFNRH, UFNRL);
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dump_udccr("udccr");
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@ -224,7 +230,7 @@ dump_state(struct pxa2xx_udc *dev)
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} else
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DMSG("ep0 driver '%s'\n", dev->driver->driver.name);
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if (!is_usb_connected())
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if (!is_vbus_present())
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return;
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dump_udccs0 ("udccs0");
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@ -233,7 +239,7 @@ dump_state(struct pxa2xx_udc *dev)
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dev->stats.read.bytes, dev->stats.read.ops);
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for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++) {
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if (dev->ep [i].desc == 0)
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if (dev->ep [i].desc == NULL)
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continue;
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DMSG ("udccs%d = %02x\n", i, *dev->ep->reg_udccs);
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}
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