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path: root/drivers/usb/c67x00/c67x00-sched.c
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Diffstat (limited to 'drivers/usb/c67x00/c67x00-sched.c')
-rw-r--r--drivers/usb/c67x00/c67x00-sched.c66
1 files changed, 26 insertions, 40 deletions
diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c
index 7311ed61e99a..a09fa68a6ce7 100644
--- a/drivers/usb/c67x00/c67x00-sched.c
+++ b/drivers/usb/c67x00/c67x00-sched.c
@@ -1,24 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* c67x00-sched.c: Cypress C67X00 USB Host Controller Driver - TD scheduling
*
* Copyright (C) 2006-2008 Barco N.V.
* Derived from the Cypress cy7c67200/300 ezusb linux driver and
* based on multiple host controller drivers inside the linux kernel.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA.
*/
#include <linux/kthread.h>
@@ -37,7 +23,7 @@
/* -------------------------------------------------------------------------- */
-/**
+/*
* struct c67x00_ep_data: Host endpoint data structure
*/
struct c67x00_ep_data {
@@ -48,7 +34,7 @@ struct c67x00_ep_data {
u16 next_frame; /* For int/isoc transactions */
};
-/**
+/*
* struct c67x00_td
*
* Hardware parts are little endiannes, SW in CPU endianess.
@@ -144,7 +130,7 @@ struct c67x00_urb_priv {
/* -------------------------------------------------------------------------- */
-/**
+/*
* dbg_td - Dump the contents of the TD
*/
static void dbg_td(struct c67x00_hcd *c67x00, struct c67x00_td *td, char *msg)
@@ -175,7 +161,7 @@ static inline u16 c67x00_get_current_frame_number(struct c67x00_hcd *c67x00)
return c67x00_ll_husb_get_frame(c67x00->sie) & HOST_FRAME_MASK;
}
-/**
+/*
* frame_add
* Software wraparound for framenumbers.
*/
@@ -184,7 +170,7 @@ static inline u16 frame_add(u16 a, u16 b)
return (a + b) & HOST_FRAME_MASK;
}
-/**
+/*
* frame_after - is frame a after frame b
*/
static inline int frame_after(u16 a, u16 b)
@@ -193,7 +179,7 @@ static inline int frame_after(u16 a, u16 b)
(HOST_FRAME_MASK / 2);
}
-/**
+/*
* frame_after_eq - is frame a after or equal to frame b
*/
static inline int frame_after_eq(u16 a, u16 b)
@@ -204,7 +190,7 @@ static inline int frame_after_eq(u16 a, u16 b)
/* -------------------------------------------------------------------------- */
-/**
+/*
* c67x00_release_urb - remove link from all tds to this urb
* Disconnects the urb from it's tds, so that it can be given back.
* pre: urb->hcpriv != NULL
@@ -500,7 +486,7 @@ c67x00_giveback_urb(struct c67x00_hcd *c67x00, struct urb *urb, int status)
c67x00_release_urb(c67x00, urb);
usb_hcd_unlink_urb_from_ep(c67x00_hcd_to_hcd(c67x00), urb);
spin_unlock(&c67x00->lock);
- usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb, urbp->status);
+ usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb, status);
spin_lock(&c67x00->lock);
}
@@ -571,7 +557,7 @@ static int c67x00_claim_frame_bw(struct c67x00_hcd *c67x00, struct urb *urb,
/* -------------------------------------------------------------------------- */
-/**
+/*
* td_addr and buf_addr must be word aligned
*/
static int c67x00_create_td(struct c67x00_hcd *c67x00, struct urb *urb,
@@ -669,7 +655,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
usb_pipeout(urb->pipe));
remaining = urb->transfer_buffer_length - urb->actual_length;
- maxps = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+ maxps = usb_maxpacket(urb->dev, urb->pipe);
need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
usb_pipeout(urb->pipe) && !(remaining % maxps);
@@ -699,7 +685,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
return 0;
}
-/**
+/*
* return 0 in case more bandwidth is available, else errorcode
*/
static int c67x00_add_ctrl_urb(struct c67x00_hcd *c67x00, struct urb *urb)
@@ -724,7 +710,8 @@ static int c67x00_add_ctrl_urb(struct c67x00_hcd *c67x00, struct urb *urb)
if (ret)
return ret;
break;
- } /* else fallthrough */
+ }
+ fallthrough;
case STATUS_STAGE:
pid = !usb_pipeout(urb->pipe) ? USB_PID_OUT : USB_PID_IN;
ret = c67x00_create_td(c67x00, urb, NULL, 0, pid, 1,
@@ -836,7 +823,7 @@ static void c67x00_fill_frame(struct c67x00_hcd *c67x00)
/* -------------------------------------------------------------------------- */
-/**
+/*
* Get TD from C67X00
*/
static inline void
@@ -879,7 +866,7 @@ static inline int c67x00_end_of_data(struct c67x00_td *td)
if (unlikely(!act_bytes))
return 1; /* This was an empty packet */
- maxps = usb_maxpacket(td_udev(td), td->pipe, usb_pipeout(td->pipe));
+ maxps = usb_maxpacket(td_udev(td), td->pipe);
if (unlikely(act_bytes < maxps))
return 1; /* Smaller then full packet */
@@ -966,13 +953,11 @@ static void c67x00_handle_successful_td(struct c67x00_hcd *c67x00,
static void c67x00_handle_isoc(struct c67x00_hcd *c67x00, struct c67x00_td *td)
{
struct urb *urb = td->urb;
- struct c67x00_urb_priv *urbp;
int cnt;
if (!urb)
return;
- urbp = urb->hcpriv;
cnt = td->privdata;
if (td->status & TD_ERROR_MASK)
@@ -986,7 +971,7 @@ static void c67x00_handle_isoc(struct c67x00_hcd *c67x00, struct c67x00_td *td)
/* -------------------------------------------------------------------------- */
-/**
+/*
* c67x00_check_td_list - handle tds which have been processed by the c67x00
* pre: current_td == 0
*/
@@ -1061,7 +1046,7 @@ static inline int c67x00_all_tds_processed(struct c67x00_hcd *c67x00)
return !c67x00_ll_husb_get_current_td(c67x00->sie);
}
-/**
+/*
* Send td to C67X00
*/
static void c67x00_send_td(struct c67x00_hcd *c67x00, struct c67x00_td *td)
@@ -1097,7 +1082,7 @@ static void c67x00_send_frame(struct c67x00_hcd *c67x00)
/* -------------------------------------------------------------------------- */
-/**
+/*
* c67x00_do_work - Schedulers state machine
*/
static void c67x00_do_work(struct c67x00_hcd *c67x00)
@@ -1138,25 +1123,26 @@ static void c67x00_do_work(struct c67x00_hcd *c67x00)
/* -------------------------------------------------------------------------- */
-static void c67x00_sched_tasklet(unsigned long __c67x00)
+static void c67x00_sched_work(struct work_struct *work)
{
- struct c67x00_hcd *c67x00 = (struct c67x00_hcd *)__c67x00;
+ struct c67x00_hcd *c67x00;
+
+ c67x00 = container_of(work, struct c67x00_hcd, work);
c67x00_do_work(c67x00);
}
void c67x00_sched_kick(struct c67x00_hcd *c67x00)
{
- tasklet_hi_schedule(&c67x00->tasklet);
+ queue_work(system_highpri_wq, &c67x00->work);
}
int c67x00_sched_start_scheduler(struct c67x00_hcd *c67x00)
{
- tasklet_init(&c67x00->tasklet, c67x00_sched_tasklet,
- (unsigned long)c67x00);
+ INIT_WORK(&c67x00->work, c67x00_sched_work);
return 0;
}
void c67x00_sched_stop_scheduler(struct c67x00_hcd *c67x00)
{
- tasklet_kill(&c67x00->tasklet);
+ cancel_work_sync(&c67x00->work);
}
generated by cgit (git 2.34.1) at 2025-12-25 20:11:00 +0000