修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/video/fbdev/wm8505fb.c
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@@ -1,17 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  WonderMedia WM8505 Frame Buffer device driver
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  *
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  *  Copyright (C) 2010 Ed Spiridonov <edo.rus@gmail.com>
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  *    Based on vt8500lcdfb.c
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- *
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- * This software is licensed under the terms of the GNU General Public
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- * License version 2, as published by the Free Software Foundation, and
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- * may be copied, distributed, and modified under those terms.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 #include <linux/delay.h>
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@@ -184,6 +176,12 @@
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 static DEVICE_ATTR_RW(contrast);
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+static struct attribute *wm8505fb_attrs[] = {
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+	&dev_attr_contrast.attr,
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+	NULL,
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+};
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+ATTRIBUTE_GROUPS(wm8505fb);
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+
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 static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
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 {
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 	chan &= 0xffff;
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@@ -248,7 +246,7 @@
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 	return 0;
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 }
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-static struct fb_ops wm8505fb_ops = {
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+static const struct fb_ops wm8505fb_ops = {
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 	.owner		= THIS_MODULE,
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 	.fb_set_par	= wm8505fb_set_par,
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 	.fb_setcolreg	= wm8505fb_setcolreg,
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@@ -341,7 +339,7 @@
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 	fbi->fb.fix.smem_start		= fb_mem_phys;
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 	fbi->fb.fix.smem_len		= fb_mem_len;
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-	fbi->fb.screen_base		= fb_mem_virt;
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+	fbi->fb.screen_buffer		= fb_mem_virt;
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 	fbi->fb.screen_size		= fb_mem_len;
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 	fbi->contrast = 0x10;
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@@ -369,10 +367,6 @@
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 		return ret;
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 	}
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-	ret = device_create_file(&pdev->dev, &dev_attr_contrast);
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-	if (ret < 0)
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-		fb_warn(&fbi->fb, "failed to register attributes (%d)\n", ret);
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-
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 	fb_info(&fbi->fb, "%s frame buffer at 0x%lx-0x%lx\n",
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 		fbi->fb.fix.id, fbi->fb.fix.smem_start,
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 		fbi->fb.fix.smem_start + fbi->fb.fix.smem_len - 1);
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@@ -383,8 +377,6 @@
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 static int wm8505fb_remove(struct platform_device *pdev)
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 {
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 	struct wm8505fb_info *fbi = platform_get_drvdata(pdev);
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-
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-	device_remove_file(&pdev->dev, &dev_attr_contrast);
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 	unregister_framebuffer(&fbi->fb);
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@@ -407,6 +399,7 @@
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 	.driver		= {
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 		.name	= DRIVER_NAME,
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 		.of_match_table = wmt_dt_ids,
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+		.dev_groups	= wm8505fb_groups,
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 	},
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 };
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