summaryrefslogtreecommitdiff
path: root/drivers/usb/musb/musb_host.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/musb/musb_host.c')
-rw-r--r--drivers/usb/musb/musb_host.c59
1 files changed, 33 insertions, 26 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 8b7d22a0c0fb..6b4481a867c5 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -13,6 +13,7 @@
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/string_choices.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/dma-mapping.h>
@@ -321,10 +322,16 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb,
musb_giveback(musb, urb, status);
qh->is_ready = ready;
+ /*
+ * musb->lock had been unlocked in musb_giveback, so qh may
+ * be freed, need to get it again
+ */
+ qh = musb_ep_get_qh(hw_ep, is_in);
+
/* reclaim resources (and bandwidth) ASAP; deschedule it, and
* invalidate qh as soon as list_empty(&hep->urb_list)
*/
- if (list_empty(&qh->hep->urb_list)) {
+ if (qh && list_empty(&qh->hep->urb_list)) {
struct list_head *head;
struct dma_controller *dma = musb->dma_controller;
@@ -360,7 +367,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb,
qh = first_qh(head);
break;
}
- /* fall through */
+ fallthrough;
case USB_ENDPOINT_XFER_ISOC:
case USB_ENDPOINT_XFER_INT:
@@ -563,10 +570,9 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, u8 epnum)
ep->rx_reinit = 0;
}
-static void musb_tx_dma_set_mode_mentor(struct dma_controller *dma,
- struct musb_hw_ep *hw_ep, struct musb_qh *qh,
- struct urb *urb, u32 offset,
- u32 *length, u8 *mode)
+static void musb_tx_dma_set_mode_mentor(struct musb_hw_ep *hw_ep,
+ struct musb_qh *qh,
+ u32 *length, u8 *mode)
{
struct dma_channel *channel = hw_ep->tx_channel;
void __iomem *epio = hw_ep->regs;
@@ -602,12 +608,8 @@ static void musb_tx_dma_set_mode_mentor(struct dma_controller *dma,
musb_writew(epio, MUSB_TXCSR, csr);
}
-static void musb_tx_dma_set_mode_cppi_tusb(struct dma_controller *dma,
- struct musb_hw_ep *hw_ep,
- struct musb_qh *qh,
+static void musb_tx_dma_set_mode_cppi_tusb(struct musb_hw_ep *hw_ep,
struct urb *urb,
- u32 offset,
- u32 *length,
u8 *mode)
{
struct dma_channel *channel = hw_ep->tx_channel;
@@ -630,11 +632,10 @@ static bool musb_tx_dma_program(struct dma_controller *dma,
u8 mode;
if (musb_dma_inventra(hw_ep->musb) || musb_dma_ux500(hw_ep->musb))
- musb_tx_dma_set_mode_mentor(dma, hw_ep, qh, urb, offset,
+ musb_tx_dma_set_mode_mentor(hw_ep, qh,
&length, &mode);
else if (is_cppi_enabled(hw_ep->musb) || tusb_dma_omap(hw_ep->musb))
- musb_tx_dma_set_mode_cppi_tusb(dma, hw_ep, qh, urb, offset,
- &length, &mode);
+ musb_tx_dma_set_mode_cppi_tusb(hw_ep, urb, &mode);
else
return false;
@@ -798,10 +799,9 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
}
if (can_bulk_split(musb, qh->type))
- load_count = min((u32) hw_ep->max_packet_sz_tx,
- len);
+ load_count = min_t(u32, hw_ep->max_packet_sz_tx, len);
else
- load_count = min((u32) packet_sz, len);
+ load_count = min_t(u32, packet_sz, len);
if (dma_channel && musb_tx_dma_program(dma_controller,
hw_ep, qh, urb, offset, len))
@@ -1019,7 +1019,7 @@ static bool musb_h_ep0_continue(struct musb *musb, u16 len, struct urb *urb)
musb->ep0_stage = MUSB_EP0_OUT;
more = true;
}
- /* FALLTHROUGH */
+ fallthrough;
case MUSB_EP0_OUT:
fifo_count = min_t(size_t, qh->maxpacket,
urb->transfer_buffer_length -
@@ -1029,7 +1029,7 @@ static bool musb_h_ep0_continue(struct musb *musb, u16 len, struct urb *urb)
+ urb->actual_length);
musb_dbg(musb, "Sending %d byte%s to ep0 fifo %p",
fifo_count,
- (fifo_count == 1) ? "" : "s",
+ str_plural(fifo_count),
fifo_dest);
musb_write_fifo(hw_ep, fifo_count, fifo_dest);
@@ -2222,7 +2222,7 @@ static int musb_urb_enqueue(
interval = max_t(u8, epd->bInterval, 1);
break;
}
- /* FALLTHROUGH */
+ fallthrough;
case USB_ENDPOINT_XFER_ISOC:
/* ISO always uses logarithmic encoding */
interval = min_t(u8, epd->bInterval, 16);
@@ -2404,6 +2404,7 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
* and its URB list has emptied, recycle this qh.
*/
if (ready && list_empty(&qh->hep->urb_list)) {
+ musb_ep_set_qh(qh->hw_ep, is_in, NULL);
qh->hep->hcpriv = NULL;
list_del(&qh->ring);
kfree(qh);
@@ -2507,7 +2508,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
if (!is_host_active(musb))
return 0;
- switch (musb->xceiv->otg->state) {
+ switch (musb_get_state(musb)) {
case OTG_STATE_A_SUSPEND:
return 0;
case OTG_STATE_A_WAIT_VRISE:
@@ -2517,7 +2518,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
*/
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS)
- musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON;
+ musb_set_state(musb, OTG_STATE_A_WAIT_BCON);
break;
default:
break;
@@ -2525,7 +2526,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
if (musb->is_active) {
WARNING("trying to suspend as %s while active\n",
- usb_otg_state_string(musb->xceiv->otg->state));
+ musb_otg_state_string(musb));
return -EBUSY;
} else
return 0;
@@ -2726,12 +2727,18 @@ int musb_host_setup(struct musb *musb, int power_budget)
if (musb->port_mode == MUSB_HOST) {
MUSB_HST_MODE(musb);
- musb->xceiv->otg->state = OTG_STATE_A_IDLE;
+ musb_set_state(musb, OTG_STATE_A_IDLE);
}
- otg_set_host(musb->xceiv->otg, &hcd->self);
+
+ if (musb->xceiv) {
+ otg_set_host(musb->xceiv->otg, &hcd->self);
+ musb->xceiv->otg->host = &hcd->self;
+ } else {
+ phy_set_mode(musb->phy, PHY_MODE_USB_HOST);
+ }
+
/* don't support otg protocols */
hcd->self.otg_port = 0;
- musb->xceiv->otg->host = &hcd->self;
hcd->power_budget = 2 * (power_budget ? : 250);
hcd->skip_phy_initialization = 1;
generated by cgit (git 2.34.1) at 2025-12-26 04:57:31 +0000