mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 15:13:55 +08:00
43a1ea1f90
Modifies the driver to use a callback based architecture for hardware dependent calls. This architecture is suitable for supporting co-existence with newer versions of MFC hardware. Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Acked-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/*
|
|
* drivers/media/platform/samsung/mfc5/s5p_mfc_intr.c
|
|
*
|
|
* C file for Samsung MFC (Multi Function Codec - FIMV) driver
|
|
* This file contains functions used to wait for command completion.
|
|
*
|
|
* Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com/
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/io.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/wait.h>
|
|
#include "s5p_mfc_common.h"
|
|
#include "s5p_mfc_debug.h"
|
|
#include "s5p_mfc_intr.h"
|
|
|
|
int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
|
|
{
|
|
int ret;
|
|
|
|
ret = wait_event_interruptible_timeout(dev->queue,
|
|
(dev->int_cond && (dev->int_type == command
|
|
|| dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
|
|
msecs_to_jiffies(MFC_INT_TIMEOUT));
|
|
if (ret == 0) {
|
|
mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
|
|
dev->int_type, command);
|
|
return 1;
|
|
} else if (ret == -ERESTARTSYS) {
|
|
mfc_err("Interrupted by a signal\n");
|
|
return 1;
|
|
}
|
|
mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
|
|
dev->int_type, command);
|
|
if (dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
|
|
{
|
|
dev->int_cond = 0;
|
|
dev->int_type = 0;
|
|
dev->int_err = 0;
|
|
}
|
|
|
|
int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
|
|
int command, int interrupt)
|
|
{
|
|
int ret;
|
|
|
|
if (interrupt) {
|
|
ret = wait_event_interruptible_timeout(ctx->queue,
|
|
(ctx->int_cond && (ctx->int_type == command
|
|
|| ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
|
|
msecs_to_jiffies(MFC_INT_TIMEOUT));
|
|
} else {
|
|
ret = wait_event_timeout(ctx->queue,
|
|
(ctx->int_cond && (ctx->int_type == command
|
|
|| ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
|
|
msecs_to_jiffies(MFC_INT_TIMEOUT));
|
|
}
|
|
if (ret == 0) {
|
|
mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
|
|
ctx->int_type, command);
|
|
return 1;
|
|
} else if (ret == -ERESTARTSYS) {
|
|
mfc_err("Interrupted by a signal\n");
|
|
return 1;
|
|
}
|
|
mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
|
|
ctx->int_type, command);
|
|
if (ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
|
|
{
|
|
ctx->int_cond = 0;
|
|
ctx->int_type = 0;
|
|
ctx->int_err = 0;
|
|
}
|
|
|