Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / media / platform / s5p-mfc / s5p_mfc_intr.c

diff --git a/kernel/drivers/media/platform/s5p-mfc/s5p_mfc_intr.c b/kernel/drivers/media/platform/s5p-mfc/s5p_mfc_intr.c
new file mode 100644 (file)
index 0000000..5b8f0e0
--- /dev/null
+++ b/kernel/drivers/media/platform/s5p-mfc/s5p_mfc_intr.c
@@ -0,0 +1,91 @@
+/*
+ * 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;
+}
+