1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * drivers/media/platform/samsung/mfc5/s5p_mfc_intr.c 4 * 5 * C file for Samsung MFC (Multi Function Codec - FIMV) driver 6 * This file contains functions used to wait for command completion. 7 * 8 * Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd. 9 * http://www.samsung.com/ 10 */ 11 12 #include <linux/delay.h> 13 #include <linux/errno.h> 14 #include <linux/io.h> 15 #include <linux/sched.h> 16 #include <linux/wait.h> 17 #include "s5p_mfc_common.h" 18 #include "s5p_mfc_debug.h" 19 #include "s5p_mfc_intr.h" 20 21 int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command) 22 { 23 int ret; 24 25 ret = wait_event_interruptible_timeout(dev->queue, 26 (dev->int_cond && (dev->int_type == command 27 || dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)), 28 msecs_to_jiffies(MFC_INT_TIMEOUT)); 29 if (ret == 0) { 30 mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n", 31 dev->int_type, command); 32 return 1; 33 } else if (ret == -ERESTARTSYS) { 34 mfc_err("Interrupted by a signal\n"); 35 return 1; 36 } 37 mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n", 38 dev->int_type, command); 39 if (dev->int_type == S5P_MFC_R2H_CMD_ERR_RET) 40 return 1; 41 return 0; 42 } 43 44 void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev) 45 { 46 dev->int_cond = 0; 47 dev->int_type = 0; 48 dev->int_err = 0; 49 } 50 51 int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx, 52 int command, int interrupt) 53 { 54 int ret; 55 56 if (interrupt) { 57 ret = wait_event_interruptible_timeout(ctx->queue, 58 (ctx->int_cond && (ctx->int_type == command 59 || ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)), 60 msecs_to_jiffies(MFC_INT_TIMEOUT)); 61 } else { 62 ret = wait_event_timeout(ctx->queue, 63 (ctx->int_cond && (ctx->int_type == command 64 || ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)), 65 msecs_to_jiffies(MFC_INT_TIMEOUT)); 66 } 67 if (ret == 0) { 68 mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n", 69 ctx->int_type, command); 70 return 1; 71 } else if (ret == -ERESTARTSYS) { 72 mfc_err("Interrupted by a signal\n"); 73 return 1; 74 } 75 mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n", 76 ctx->int_type, command); 77 if (ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET) 78 return 1; 79 return 0; 80 } 81 82 void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx) 83 { 84 ctx->int_cond = 0; 85 ctx->int_type = 0; 86 ctx->int_err = 0; 87 } 88 89