cregit-Linux how code gets into the kernel

Release 4.11 drivers/video/fbdev/q40fb.c

/*
 * linux/drivers/video/q40fb.c -- Q40 frame buffer device
 *
 * Copyright (C) 2001
 *
 *      Richard Zidlicky <rz@linux-m68k.org>
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License. See the file COPYING in the main directory of this archive for
 *  more details.
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>

#include <linux/uaccess.h>
#include <asm/setup.h>
#include <asm/q40_master.h>
#include <linux/fb.h>
#include <linux/module.h>
#include <asm/pgtable.h>


#define Q40_PHYS_SCREEN_ADDR 0xFE800000


static struct fb_fix_screeninfo q40fb_fix = {
	.id		= "Q40",
	.smem_len	= 1024*1024,
	.type		= FB_TYPE_PACKED_PIXELS,
	.visual		= FB_VISUAL_TRUECOLOR,
	.line_length	= 1024*2,
	.accel		= FB_ACCEL_NONE,
};


static struct fb_var_screeninfo q40fb_var = {
	.xres		= 1024,
	.yres		= 512,
	.xres_virtual	= 1024,
	.yres_virtual	= 512,
	.bits_per_pixel	= 16,
    	.red		= {6, 5, 0},
	.green		= {11, 5, 0},
	.blue		= {0, 6, 0},
	.activate	= FB_ACTIVATE_NOW,
	.height		= 230,
	.width		= 300,
	.vmode		= FB_VMODE_NONINTERLACED,
};


static int q40fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { /* * Set a single color register. The values supplied have a 16 bit * magnitude. * Return != 0 for invalid regno. */ if (regno > 255) return 1; red>>=11; green>>=11; blue>>=10; if (regno < 16) { ((u32 *)info->pseudo_palette)[regno] = ((red & 31) <<6) | ((green & 31) << 11) | (blue & 63); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
James Simmons5960.20%250.00%
Linus Torvalds (pre-git)2929.59%125.00%
Andrew Morton1010.20%125.00%
Total98100.00%4100.00%

static struct fb_ops q40fb_ops = { .owner = THIS_MODULE, .fb_setcolreg = q40fb_setcolreg, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, };
static int q40fb_probe(struct platform_device *dev) { struct fb_info *info; if (!MACH_IS_Q40) return -ENXIO; /* mapped in q40/config.c */ q40fb_fix.smem_start = Q40_PHYS_SCREEN_ADDR; info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); if (!info) return -ENOMEM; info->var = q40fb_var; info->fix = q40fb_fix; info->fbops = &q40fb_ops; info->flags = FBINFO_DEFAULT; /* not as module for now */ info->pseudo_palette = info->par; info->par = NULL; info->screen_base = (char *) q40fb_fix.smem_start; if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { framebuffer_release(info); return -ENOMEM; } master_outb(3, DISPLAY_CONTROL_REG); if (register_framebuffer(info) < 0) { printk(KERN_ERR "Unable to register Q40 frame buffer\n"); fb_dealloc_cmap(&info->cmap); framebuffer_release(info); return -EINVAL; } fb_info(info, "Q40 frame buffer alive and kicking !\n"); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Andrew Morton9047.87%19.09%
Linus Torvalds (pre-git)5529.26%327.27%
James Simmons3619.15%327.27%
Joe Perches31.60%19.09%
Russell King21.06%19.09%
Antonino A. Daplas21.06%218.18%
Total188100.00%11100.00%

static struct platform_driver q40fb_driver = { .probe = q40fb_probe, .driver = { .name = "q40fb", }, }; static struct platform_device q40fb_device = { .name = "q40fb", };
int __init q40fb_init(void) { int ret = 0; if (fb_get_options("q40fb", NULL)) return -ENODEV; ret = platform_driver_register(&q40fb_driver); if (!ret) { ret = platform_device_register(&q40fb_device); if (ret) platform_driver_unregister(&q40fb_driver); } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Andrew Morton4775.81%133.33%
Antonino A. Daplas1320.97%133.33%
Russell King23.23%133.33%
Total62100.00%3100.00%

module_init(q40fb_init); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
James Simmons21836.70%527.78%
Andrew Morton20634.68%15.56%
Linus Torvalds (pre-git)12621.21%316.67%
Antonino A. Daplas203.37%422.22%
Russell King152.53%211.11%
Linus Torvalds61.01%211.11%
Joe Perches30.51%15.56%
Greg Kroah-Hartman0.00%00.00%
Total594100.00%18100.00%
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