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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/media/platform/exynos4-is/fimc-is.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
34  *
....@@ -5,17 +6,12 @@
56  *
67  * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
78  *          Younghwan Joo <yhwan.joo@samsung.com>
8
- *
9
- * This program is free software; you can redistribute it and/or modify
10
- * it under the terms of the GNU General Public License version 2 as
11
- * published by the Free Software Foundation.
129  */
1310 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
1411 
1512 #include <linux/device.h>
1613 #include <linux/debugfs.h>
1714 #include <linux/delay.h>
18
-#include <linux/dma-contiguous.h>
1915 #include <linux/errno.h>
2016 #include <linux/firmware.h>
2117 #include <linux/interrupt.h>
....@@ -144,7 +140,7 @@
144140 			dev_err(&is->pdev->dev, "clock %s enable failed\n",
145141 				fimc_is_clocks[i]);
146142 			for (--i; i >= 0; i--)
147
-				clk_disable(is->clocks[i]);
143
+				clk_disable_unprepare(is->clocks[i]);
148144 			return ret;
149145 		}
150146 		pr_debug("enabled clock: %s\n", fimc_is_clocks[i]);
....@@ -217,6 +213,7 @@
217213 
218214 			if (ret < 0 || index >= FIMC_IS_SENSORS_NUM) {
219215 				of_node_put(child);
216
+				of_node_put(i2c_bus);
220217 				return ret;
221218 			}
222219 			index++;
....@@ -344,7 +341,6 @@
344341 		return -ENOMEM;
345342 
346343 	is->memory.size = FIMC_IS_CPU_MEM_SIZE;
347
-	memset(is->memory.vaddr, 0, is->memory.size);
348344 
349345 	dev_info(dev, "FIMC-IS CPU memory base: %#x\n", (u32)is->memory.paddr);
350346 
....@@ -656,7 +652,7 @@
656652 
657653 int fimc_is_hw_initialize(struct fimc_is *is)
658654 {
659
-	const int config_ids[] = {
655
+	static const int config_ids[] = {
660656 		IS_SC_PREVIEW_STILL, IS_SC_PREVIEW_VIDEO,
661657 		IS_SC_CAPTURE_STILL, IS_SC_CAPTURE_VIDEO
662658 	};
....@@ -738,7 +734,7 @@
738734 	return 0;
739735 }
740736 
741
-static int fimc_is_log_show(struct seq_file *s, void *data)
737
+static int fimc_is_show(struct seq_file *s, void *data)
742738 {
743739 	struct fimc_is *is = s->private;
744740 	const u8 *buf = is->memory.vaddr + FIMC_IS_DEBUG_REGION_OFFSET;
....@@ -752,17 +748,7 @@
752748 	return 0;
753749 }
754750 
755
-static int fimc_is_debugfs_open(struct inode *inode, struct file *file)
756
-{
757
-	return single_open(file, fimc_is_log_show, inode->i_private);
758
-}
759
-
760
-static const struct file_operations fimc_is_debugfs_fops = {
761
-	.open		= fimc_is_debugfs_open,
762
-	.read		= seq_read,
763
-	.llseek		= seq_lseek,
764
-	.release	= single_release,
765
-};
751
+DEFINE_SHOW_ATTRIBUTE(fimc_is);
766752 
767753 static void fimc_is_debugfs_remove(struct fimc_is *is)
768754 {
....@@ -770,18 +756,12 @@
770756 	is->debugfs_entry = NULL;
771757 }
772758 
773
-static int fimc_is_debugfs_create(struct fimc_is *is)
759
+static void fimc_is_debugfs_create(struct fimc_is *is)
774760 {
775
-	struct dentry *dentry;
776
-
777761 	is->debugfs_entry = debugfs_create_dir("fimc_is", NULL);
778762 
779
-	dentry = debugfs_create_file("fw_log", S_IRUGO, is->debugfs_entry,
780
-				     is, &fimc_is_debugfs_fops);
781
-	if (!dentry)
782
-		fimc_is_debugfs_remove(is);
783
-
784
-	return is->debugfs_entry == NULL ? -EIO : 0;
763
+	debugfs_create_file("fw_log", S_IRUGO, is->debugfs_entry, is,
764
+			    &fimc_is_fops);
785765 }
786766 
787767 static int fimc_is_runtime_resume(struct device *dev);
....@@ -849,9 +829,9 @@
849829 			goto err_irq;
850830 	}
851831 
852
-	ret = pm_runtime_get_sync(dev);
832
+	ret = pm_runtime_resume_and_get(dev);
853833 	if (ret < 0)
854
-		goto err_pm;
834
+		goto err_pm_disable;
855835 
856836 	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
857837 
....@@ -867,9 +847,7 @@
867847 	if (ret < 0)
868848 		goto err_pm;
869849 
870
-	ret = fimc_is_debugfs_create(is);
871
-	if (ret < 0)
872
-		goto err_sd;
850
+	fimc_is_debugfs_create(is);
873851 
874852 	ret = fimc_is_request_firmware(is, FIMC_IS_FW_FILENAME);
875853 	if (ret < 0)
....@@ -882,11 +860,13 @@
882860 
883861 err_dfs:
884862 	fimc_is_debugfs_remove(is);
885
-err_sd:
886863 	fimc_is_unregister_subdevs(is);
887864 err_pm:
865
+	pm_runtime_put_noidle(dev);
888866 	if (!pm_runtime_enabled(dev))
889867 		fimc_is_runtime_suspend(dev);
868
+err_pm_disable:
869
+	pm_runtime_disable(dev);
890870 err_irq:
891871 	free_irq(is->irq, is);
892872 err_clk: