[mirror_ubuntu-artful-kernel.git] / 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;
}

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;
}

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;
}

module_init(q40fb_init);
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/video/q40fb.c -- Q40 frame buffer device
	3	*
	4	* Copyright (C) 2001
	5	*
	6	* Richard Zidlicky <rz@linux-m68k.org>
	7	*
	8	* This file is subject to the terms and conditions of the GNU General Public
	9	* License. See the file COPYING in the main directory of this archive for
	10	* more details.
	11	*/
	12
	13	#include <linux/kernel.h>
	14	#include <linux/errno.h>
	15	#include <linux/string.h>
	16	#include <linux/mm.h>
1da177e4 LT	17	#include <linux/delay.h>
1da177e4 LT	18	#include <linux/interrupt.h>
d052d1be	19	#include <linux/platform_device.h>
1da177e4	20
7c0f6ba6	21	#include <linux/uaccess.h>
1da177e4	22	#include <asm/setup.h>
1da177e4 LT	23	#include <asm/q40_master.h>
	24	#include <linux/fb.h>
	25	#include <linux/module.h>
	26	#include <asm/pgtable.h>
	27
	28	#define Q40_PHYS_SCREEN_ADDR 0xFE800000
	29
48c68c4f	30	static struct fb_fix_screeninfo q40fb_fix = {
1da177e4 LT	31	.id = "Q40",
	32	.smem_len = 1024*1024,
	33	.type = FB_TYPE_PACKED_PIXELS,
	34	.visual = FB_VISUAL_TRUECOLOR,
	35	.line_length = 1024*2,
	36	.accel = FB_ACCEL_NONE,
	37	};
	38
48c68c4f	39	static struct fb_var_screeninfo q40fb_var = {
1da177e4 LT	40	.xres = 1024,
	41	.yres = 512,
	42	.xres_virtual = 1024,
	43	.yres_virtual = 512,
	44	.bits_per_pixel = 16,
	45	.red = {6, 5, 0},
	46	.green = {11, 5, 0},
	47	.blue = {0, 6, 0},
	48	.activate = FB_ACTIVATE_NOW,
	49	.height = 230,
	50	.width = 300,
	51	.vmode = FB_VMODE_NONINTERLACED,
	52	};
	53
	54	static int q40fb_setcolreg(unsigned regno, unsigned red, unsigned green,
	55	unsigned blue, unsigned transp,
	56	struct fb_info *info)
	57	{
	58	/*
	59	* Set a single color register. The values supplied have a 16 bit
	60	* magnitude.
	61	* Return != 0 for invalid regno.
	62	*/
	63
	64	if (regno > 255)
	65	return 1;
	66	red>>=11;
	67	green>>=11;
	68	blue>>=10;
	69
	70	if (regno < 16) {
	71	((u32 *)info->pseudo_palette)[regno] = ((red & 31) <<6) \|
	72	((green & 31) << 11) \|
	73	(blue & 63);
	74	}
	75	return 0;
	76	}
	77
	78	static struct fb_ops q40fb_ops = {
	79	.owner = THIS_MODULE,
	80	.fb_setcolreg = q40fb_setcolreg,
	81	.fb_fillrect = cfb_fillrect,
	82	.fb_copyarea = cfb_copyarea,
	83	.fb_imageblit = cfb_imageblit,
1da177e4 LT	84	};
1da177e4 LT	85
48c68c4f	86	static int q40fb_probe(struct platform_device *dev)
1da177e4	87	{
1da177e4 LT	88	struct fb_info *info;
	89
	90	if (!MACH_IS_Q40)
	91	return -ENXIO;
	92
	93	/* mapped in q40/config.c */
	94	q40fb_fix.smem_start = Q40_PHYS_SCREEN_ADDR;
	95
ce303c07	96	info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
1da177e4 LT	97	if (!info)
	98	return -ENOMEM;
	99
	100	info->var = q40fb_var;
	101	info->fix = q40fb_fix;
	102	info->fbops = &q40fb_ops;
	103	info->flags = FBINFO_DEFAULT; /* not as module for now */
	104	info->pseudo_palette = info->par;
	105	info->par = NULL;
	106	info->screen_base = (char *) q40fb_fix.smem_start;
	107
	108	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
	109	framebuffer_release(info);
	110	return -ENOMEM;
	111	}
	112
	113	master_outb(3, DISPLAY_CONTROL_REG);
	114
	115	if (register_framebuffer(info) < 0) {
	116	printk(KERN_ERR "Unable to register Q40 frame buffer\n");
	117	fb_dealloc_cmap(&info->cmap);
	118	framebuffer_release(info);
	119	return -EINVAL;
	120	}
	121
31b6780c	122	fb_info(info, "Q40 frame buffer alive and kicking !\n");
1da177e4 LT	123	return 0;
	124	}
	125
3ae5eaec	126	static struct platform_driver q40fb_driver = {
1da177e4	127	.probe = q40fb_probe,
3ae5eaec RK	128	.driver = {
	129	.name = "q40fb",
	130	},
1da177e4 LT	131	};
	132
	133	static struct platform_device q40fb_device = {
	134	.name = "q40fb",
	135	};
	136
	137	int __init q40fb_init(void)
	138	{
	139	int ret = 0;
	140
	141	if (fb_get_options("q40fb", NULL))
	142	return -ENODEV;
	143
3ae5eaec	144	ret = platform_driver_register(&q40fb_driver);
1da177e4 LT	145
	146	if (!ret) {
	147	ret = platform_device_register(&q40fb_device);
	148	if (ret)
3ae5eaec	149	platform_driver_unregister(&q40fb_driver);
1da177e4 LT	150	}
	151	return ret;
	152	}
	153
	154	module_init(q40fb_init);
	155	MODULE_LICENSE("GPL");