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path: root/drivers/usb/host/imx21-hcd.c
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Diffstat (limited to 'drivers/usb/host/imx21-hcd.c')
-rw-r--r--drivers/usb/host/imx21-hcd.c91
1 files changed, 48 insertions, 43 deletions
diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c
index e49b75a7800..207bad99301 100644
--- a/drivers/usb/host/imx21-hcd.c
+++ b/drivers/usb/host/imx21-hcd.c
@@ -58,9 +58,14 @@
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/dma-mapping.h>
+#include <linux/module.h>
#include "imx21-hcd.h"
+#ifdef CONFIG_DYNAMIC_DEBUG
+#define DEBUG
+#endif
+
#ifdef DEBUG
#define DEBUG_LOG_FRAME(imx21, etd, event) \
(etd)->event##_frame = readl((imx21)->regs + USBH_FRMNUB)
@@ -473,7 +478,7 @@ static void free_epdmem(struct imx21 *imx21, struct usb_host_endpoint *ep)
/* End handling */
/* =========================================== */
-/* Endpoint now idle - release it's ETD(s) or asssign to queued request */
+/* Endpoint now idle - release its ETD(s) or assign to queued request */
static void ep_idle(struct imx21 *imx21, struct ep_priv *ep_priv)
{
int i;
@@ -808,26 +813,36 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd,
/* calculate frame */
cur_frame = imx21_hc_get_frame(hcd);
- if (urb->transfer_flags & URB_ISO_ASAP) {
- if (list_empty(&ep_priv->td_list))
- urb->start_frame = cur_frame + 5;
- else
- urb->start_frame = list_entry(
- ep_priv->td_list.prev,
- struct td, list)->frame + urb->interval;
- }
- urb->start_frame = wrap_frame(urb->start_frame);
- if (frame_after(cur_frame, urb->start_frame)) {
- dev_dbg(imx21->dev,
- "enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
- urb->start_frame, cur_frame,
- (urb->transfer_flags & URB_ISO_ASAP) != 0);
- urb->start_frame = wrap_frame(cur_frame + 1);
+ i = 0;
+ if (list_empty(&ep_priv->td_list)) {
+ urb->start_frame = wrap_frame(cur_frame + 5);
+ } else {
+ urb->start_frame = wrap_frame(list_entry(ep_priv->td_list.prev,
+ struct td, list)->frame + urb->interval);
+
+ if (frame_after(cur_frame, urb->start_frame)) {
+ dev_dbg(imx21->dev,
+ "enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
+ urb->start_frame, cur_frame,
+ (urb->transfer_flags & URB_ISO_ASAP) != 0);
+ i = DIV_ROUND_UP(wrap_frame(
+ cur_frame - urb->start_frame),
+ urb->interval);
+
+ /* Treat underruns as if URB_ISO_ASAP was set */
+ if ((urb->transfer_flags & URB_ISO_ASAP) ||
+ i >= urb->number_of_packets) {
+ urb->start_frame = wrap_frame(urb->start_frame
+ + i * urb->interval);
+ i = 0;
+ }
+ }
}
/* set up transfers */
+ urb_priv->isoc_remaining = urb->number_of_packets - i;
td = urb_priv->isoc_td;
- for (i = 0; i < urb->number_of_packets; i++, td++) {
+ for (; i < urb->number_of_packets; i++, td++) {
unsigned int offset = urb->iso_frame_desc[i].offset;
td->ep = ep;
td->urb = urb;
@@ -839,7 +854,6 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd,
list_add_tail(&td->list, &ep_priv->td_list);
}
- urb_priv->isoc_remaining = urb->number_of_packets;
dev_vdbg(imx21->dev, "setup %d packets for iso frame %d->%d\n",
urb->number_of_packets, urb->start_frame, td->frame);
@@ -927,7 +941,8 @@ static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb)
if (state == US_CTRL_SETUP) {
dir = TD_DIR_SETUP;
if (unsuitable_for_dma(urb->setup_dma))
- unmap_urb_setup_for_dma(imx21->hcd, urb);
+ usb_hcd_unmap_urb_setup_for_dma(imx21->hcd,
+ urb);
etd->dma_handle = urb->setup_dma;
etd->cpu_buffer = urb->setup_packet;
bufround = 0;
@@ -943,7 +958,7 @@ static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb)
dir = usb_pipeout(pipe) ? TD_DIR_OUT : TD_DIR_IN;
bufround = (dir == TD_DIR_IN) ? 1 : 0;
if (unsuitable_for_dma(urb->transfer_dma))
- unmap_urb_for_dma(imx21->hcd, urb);
+ usb_hcd_unmap_urb_for_dma(imx21->hcd, urb);
etd->dma_handle = urb->transfer_dma;
etd->cpu_buffer = urb->transfer_buffer;
@@ -1322,7 +1337,7 @@ static void process_etds(struct usb_hcd *hcd, struct imx21 *imx21, int sof)
* (and hence no interrupt occurs).
* This causes the transfer in question to hang.
* The kludge below checks for this condition at each SOF and processes any
- * blocked ETDs (after an arbitary 10 frame wait)
+ * blocked ETDs (after an arbitrary 10 frame wait)
*
* With a single active transfer the usbtest test suite will run for days
* without the kludge.
@@ -1471,8 +1486,8 @@ static int get_hub_descriptor(struct usb_hcd *hcd,
0x0010 | /* No over current protection */
0);
- desc->bitmap[0] = 1 << 1;
- desc->bitmap[1] = ~0;
+ desc->u.hs.DeviceRemovable[0] = 1 << 1;
+ desc->u.hs.DeviceRemovable[1] = ~0;
return 0;
}
@@ -1658,7 +1673,7 @@ static int imx21_hc_reset(struct usb_hcd *hcd)
spin_lock_irqsave(&imx21->lock, flags);
- /* Reset the Host controler modules */
+ /* Reset the Host controller modules */
writel(USBOTG_RST_RSTCTRL | USBOTG_RST_RSTRH |
USBOTG_RST_RSTHSIE | USBOTG_RST_RSTHC,
imx21->regs + USBOTG_RST_CTRL);
@@ -1679,7 +1694,7 @@ static int imx21_hc_reset(struct usb_hcd *hcd)
return 0;
}
-static int __devinit imx21_hc_start(struct usb_hcd *hcd)
+static int imx21_hc_start(struct usb_hcd *hcd)
{
struct imx21 *imx21 = hcd_to_imx21(hcd);
unsigned long flags;
@@ -1810,7 +1825,7 @@ static int imx21_remove(struct platform_device *pdev)
usb_remove_hcd(hcd);
if (res != NULL) {
- clk_disable(imx21->clk);
+ clk_disable_unprepare(imx21->clk);
clk_put(imx21->clk);
iounmap(imx21->regs);
release_mem_region(res->start, resource_size(res));
@@ -1849,7 +1864,7 @@ static int imx21_probe(struct platform_device *pdev)
imx21 = hcd_to_imx21(hcd);
imx21->hcd = hcd;
imx21->dev = &pdev->dev;
- imx21->pdata = pdev->dev.platform_data;
+ imx21->pdata = dev_get_platdata(&pdev->dev);
if (!imx21->pdata)
imx21->pdata = &default_pdata;
@@ -1883,23 +1898,24 @@ static int imx21_probe(struct platform_device *pdev)
ret = clk_set_rate(imx21->clk, clk_round_rate(imx21->clk, 48000000));
if (ret)
goto failed_clock_set;
- ret = clk_enable(imx21->clk);
+ ret = clk_prepare_enable(imx21->clk);
if (ret)
goto failed_clock_enable;
dev_info(imx21->dev, "Hardware HC revision: 0x%02X\n",
(readl(imx21->regs + USBOTG_HWMODE) >> 16) & 0xFF);
- ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ ret = usb_add_hcd(hcd, irq, 0);
if (ret != 0) {
dev_err(imx21->dev, "usb_add_hcd() returned %d\n", ret);
goto failed_add_hcd;
}
+ device_wakeup_enable(hcd->self.controller);
return 0;
failed_add_hcd:
- clk_disable(imx21->clk);
+ clk_disable_unprepare(imx21->clk);
failed_clock_enable:
failed_clock_set:
clk_put(imx21->clk);
@@ -1915,7 +1931,7 @@ failed_request_mem:
static struct platform_driver imx21_hcd_driver = {
.driver = {
- .name = (char *)hcd_name,
+ .name = hcd_name,
},
.probe = imx21_probe,
.remove = imx21_remove,
@@ -1923,18 +1939,7 @@ static struct platform_driver imx21_hcd_driver = {
.resume = NULL,
};
-static int __init imx21_hcd_init(void)
-{
- return platform_driver_register(&imx21_hcd_driver);
-}
-
-static void __exit imx21_hcd_cleanup(void)
-{
- platform_driver_unregister(&imx21_hcd_driver);
-}
-
-module_init(imx21_hcd_init);
-module_exit(imx21_hcd_cleanup);
+module_platform_driver(imx21_hcd_driver);
MODULE_DESCRIPTION("i.MX21 USB Host controller");
MODULE_AUTHOR("Martin Fuzzey");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-03 18:27:19 +0000