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
/*
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* drivers/media/platform/samsung/mfc5/s5p_mfc_intr.c
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*
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* C file for Samsung MFC (Multi Function Codec - FIMV) driver
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* This file contains functions used to wait for command completion.
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*
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* Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/io.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include "s5p_mfc_common.h"
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#include "s5p_mfc_debug.h"
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#include "s5p_mfc_intr.h"
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int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
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{
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int ret;
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ret = wait_event_interruptible_timeout(dev->queue,
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(dev->int_cond && (dev->int_type == command
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|| dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
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msecs_to_jiffies(MFC_INT_TIMEOUT));
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if (ret == 0) {
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mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
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dev->int_type, command);
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return 1;
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} else if (ret == -ERESTARTSYS) {
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mfc_err("Interrupted by a signal\n");
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return 1;
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}
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mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
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dev->int_type, command);
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if (dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)
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return 1;
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return 0;
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}
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void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
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{
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dev->int_cond = 0;
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dev->int_type = 0;
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dev->int_err = 0;
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}
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int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
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int command, int interrupt)
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{
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int ret;
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if (interrupt) {
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ret = wait_event_interruptible_timeout(ctx->queue,
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(ctx->int_cond && (ctx->int_type == command
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|| ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
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msecs_to_jiffies(MFC_INT_TIMEOUT));
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} else {
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ret = wait_event_timeout(ctx->queue,
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(ctx->int_cond && (ctx->int_type == command
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|| ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
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msecs_to_jiffies(MFC_INT_TIMEOUT));
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}
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if (ret == 0) {
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mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
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ctx->int_type, command);
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return 1;
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} else if (ret == -ERESTARTSYS) {
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mfc_err("Interrupted by a signal\n");
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return 1;
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}
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mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
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ctx->int_type, command);
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if (ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)
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return 1;
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return 0;
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}
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void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
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{
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ctx->int_cond = 0;
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ctx->int_type = 0;
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ctx->int_err = 0;
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}
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