cregit-Linux how code gets into the kernel

Release 4.7 drivers/auxdisplay/cfag12864bfb.c

/*
 *    Filename: cfag12864bfb.c
 *     Version: 0.1.0
 * Description: cfag12864b LCD framebuffer driver
 *     License: GPLv2
 *     Depends: cfag12864b
 *
 *      Author: Copyright (C) Miguel Ojeda Sandonis
 *        Date: 2006-10-31
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/mm.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <linux/uaccess.h>
#include <linux/cfag12864b.h>


#define CFAG12864BFB_NAME "cfag12864bfb"


static struct fb_fix_screeninfo cfag12864bfb_fix = {
	.id = "cfag12864b",
	.type = FB_TYPE_PACKED_PIXELS,
	.visual = FB_VISUAL_MONO10,
	.xpanstep = 0,
	.ypanstep = 0,
	.ywrapstep = 0,
	.line_length = CFAG12864B_WIDTH / 8,
	.accel = FB_ACCEL_NONE,
};


static struct fb_var_screeninfo cfag12864bfb_var = {
	.xres = CFAG12864B_WIDTH,
	.yres = CFAG12864B_HEIGHT,
	.xres_virtual = CFAG12864B_WIDTH,
	.yres_virtual = CFAG12864B_HEIGHT,
	.bits_per_pixel = 1,
	.red = { 0, 1, 0 },
      	.green = { 0, 1, 0 },
      	.blue = { 0, 1, 0 },
	.left_margin = 0,
	.right_margin = 0,
	.upper_margin = 0,
	.lower_margin = 0,
	.vmode = FB_VMODE_NONINTERLACED,
};


static int cfag12864bfb_mmap(struct fb_info *info, struct vm_area_struct *vma) { return vm_insert_page(vma, vma->vm_start, virt_to_page(cfag12864b_buffer)); }

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PersonTokensPropCommitsCommitProp
miguel ojeda sandonismiguel ojeda sandonis31100.00%1100.00%
Total31100.00%1100.00%

static struct fb_ops cfag12864bfb_ops = { .owner = THIS_MODULE, .fb_read = fb_sys_read, .fb_write = fb_sys_write, .fb_fillrect = sys_fillrect, .fb_copyarea = sys_copyarea, .fb_imageblit = sys_imageblit, .fb_mmap = cfag12864bfb_mmap, };
static int cfag12864bfb_probe(struct platform_device *device) { int ret = -EINVAL; struct fb_info *info = framebuffer_alloc(0, &device->dev); if (!info) goto none; info->screen_base = (char __iomem *) cfag12864b_buffer; info->screen_size = CFAG12864B_SIZE; info->fbops = &cfag12864bfb_ops; info->fix = cfag12864bfb_fix; info->var = cfag12864bfb_var; info->pseudo_palette = NULL; info->par = NULL; info->flags = FBINFO_FLAG_DEFAULT; if (register_framebuffer(info) < 0) goto fballoced; platform_set_drvdata(device, info); fb_info(info, "%s frame buffer device\n", info->fix.id); return 0; fballoced: framebuffer_release(info); none: return ret; }

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PersonTokensPropCommitsCommitProp
miguel ojeda sandonismiguel ojeda sandonis13897.87%150.00%
joe perchesjoe perches32.13%150.00%
Total141100.00%2100.00%


static int cfag12864bfb_remove(struct platform_device *device) { struct fb_info *info = platform_get_drvdata(device); if (info) { unregister_framebuffer(info); framebuffer_release(info); } return 0; }

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miguel ojeda sandonismiguel ojeda sandonis40100.00%1100.00%
Total40100.00%1100.00%

static struct platform_driver cfag12864bfb_driver = { .probe = cfag12864bfb_probe, .remove = cfag12864bfb_remove, .driver = { .name = CFAG12864BFB_NAME, }, }; static struct platform_device *cfag12864bfb_device;
static int __init cfag12864bfb_init(void) { int ret = -EINVAL; /* cfag12864b_init() must be called first */ if (!cfag12864b_isinited()) { printk(KERN_ERR CFAG12864BFB_NAME ": ERROR: " "cfag12864b is not initialized\n"); goto none; } if (cfag12864b_enable()) { printk(KERN_ERR CFAG12864BFB_NAME ": ERROR: " "can't enable cfag12864b refreshing (being used)\n"); return -ENODEV; } ret = platform_driver_register(&cfag12864bfb_driver); if (!ret) { cfag12864bfb_device = platform_device_alloc(CFAG12864BFB_NAME, 0); if (cfag12864bfb_device) ret = platform_device_add(cfag12864bfb_device); else ret = -ENOMEM; if (ret) { platform_device_put(cfag12864bfb_device); platform_driver_unregister(&cfag12864bfb_driver); } } none: return ret; }

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miguel ojeda sandonismiguel ojeda sandonis115100.00%2100.00%
Total115100.00%2100.00%


static void __exit cfag12864bfb_exit(void) { platform_device_unregister(cfag12864bfb_device); platform_driver_unregister(&cfag12864bfb_driver); cfag12864b_disable(); }

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miguel ojeda sandonismiguel ojeda sandonis23100.00%1100.00%
Total23100.00%1100.00%

module_init(cfag12864bfb_init); module_exit(cfag12864bfb_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>"); MODULE_DESCRIPTION("cfag12864b LCD framebuffer driver");

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PersonTokensPropCommitsCommitProp
miguel ojeda sandonismiguel ojeda sandonis60997.13%240.00%
avuton olrichavuton olrich132.07%120.00%
joe perchesjoe perches30.48%120.00%
miguel ojedamiguel ojeda20.32%120.00%
greg kroah-hartmangreg kroah-hartman0.00%00.00%
Total627100.00%5100.00%
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