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/*
* drivers/video/pnx4008/pnxrgbfb.c
*
* PNX4008's framebuffer support
*
* Author: Grigory Tolstolytkin <gtolstolytkin@ru.mvista.com>
* Based on Philips Semiconductors's code
*
* Copyrght (c) 2005 MontaVista Software, Inc.
* Copyright (c) 2005 Philips Semiconductors
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/uaccess.h>
#include "sdum.h"
#include "fbcommon.h"
static u32 colreg[16];
static struct fb_var_screeninfo rgbfb_var __initdata = {
.xres = LCD_X_RES,
.yres = LCD_Y_RES,
.xres_virtual = LCD_X_RES,
.yres_virtual = LCD_Y_RES,
.bits_per_pixel = 32,
.red.offset = 16,
.red.length = 8,
.green.offset = 8,
.green.length = 8,
.blue.offset = 0,
.blue.length = 8,
.left_margin = 0,
.right_margin = 0,
.upper_margin = 0,
.lower_margin = 0,
.vmode = FB_VMODE_NONINTERLACED,
};
static struct fb_fix_screeninfo rgbfb_fix __initdata = {
.id = "RGBFB",
.line_length = LCD_X_RES * LCD_BBP,
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.xpanstep = 0,
.ypanstep = 0,
.ywrapstep = 0,
.accel = FB_ACCEL_NONE,
};
static int channel_owned;
static int no_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
return 0;
}
static int rgbfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
if (regno > 15)
return 1;
colreg[regno] = ((red & 0xff00) << 8) | (green & 0xff00) |
((blue & 0xff00) >> 8);
return 0;
}
static int rgbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
return pnx4008_sdum_mmap(info, vma, NULL);
}
static struct fb_ops rgbfb_ops = {
.fb_mmap = rgbfb_mmap,
.fb_setcolreg = rgbfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
static int rgbfb_remove(struct platform_device *pdev)
{
struct fb_info *info = platform_get_drvdata(pdev);
if (info) {
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
platform_set_drvdata(pdev, NULL);
kfree(info);
}
pnx4008_free_dum_channel(channel_owned, pdev->id);
pnx4008_set_dum_exit_notification(pdev->id);
return 0;
}
static int __devinit rgbfb_probe(struct platform_device *pdev)
{
struct fb_info *info;
struct dumchannel_uf chan_uf;
int ret;
char *option;
info = framebuffer_alloc(sizeof(u32) * 16, &pdev->dev);
if (!info) {
ret = -ENOMEM;
goto err;
}
pnx4008_get_fb_addresses(FB_TYPE_RGB, (void **)&info->screen_base,
(dma_addr_t *) &rgbfb_fix.smem_start,
&rgbfb_fix.smem_len);
if ((ret = pnx4008_alloc_dum_channel(pdev->id)) < 0)
goto err0;
else {
channel_owned = ret;
chan_uf.channelnr = channel_owned;
chan_uf.dirty = (u32 *) NULL;
chan_uf.source = (u32 *) rgbfb_fix.smem_start;
chan_uf.x_offset = 0;
chan_uf.y_offset = 0;
chan_uf.width = LCD_X_RES;
chan_uf.height = LCD_Y_RES;
if ((ret = pnx4008_put_dum_channel_uf(chan_uf, pdev->id))< 0)
goto err1;
if ((ret =
pnx4008_set_dum_channel_sync(channel_owned, CONF_SYNC_ON,
pdev->id)) < 0)
goto err1;
if ((ret =
pnx4008_set_dum_channel_dirty_detect(channel_owned,
CONF_DIRTYDETECTION_ON,
pdev->id)) < 0)
goto err1;
}
if (!fb_get_options("pnxrgbfb", &option) && !strcmp(option, "nocursor"))
rgbfb_ops.fb_cursor = no_cursor;
info->node = -1;
info->flags = FBINFO_FLAG_DEFAULT;
info->fbops = &rgbfb_ops;
info->fix = rgbfb_fix;
info->var = rgbfb_var;
info->screen_size = rgbfb_fix.smem_len;
info->pseudo_palette = info->par;
info->par = NULL;
ret = fb_alloc_cmap(&info->cmap, 256, 0);
if (ret < 0)
goto err2;
ret = register_framebuffer(info);
if (ret < 0)
goto err3;
platform_set_drvdata(pdev, info);
return 0;
err3:
fb_dealloc_cmap(&info->cmap);
err2:
framebuffer_release(info);
err1:
pnx4008_free_dum_channel(channel_owned, pdev->id);
err0:
kfree(info);
err:
return ret;
}
static struct platform_driver rgbfb_driver = {
.driver = {
.name = "rgbfb",
},
.probe = rgbfb_probe,
.remove = rgbfb_remove,
};
static int __init rgbfb_init(void)
{
return platform_driver_register(&rgbfb_driver);
}
static void __exit rgbfb_exit(void)
{
platform_driver_unregister(&rgbfb_driver);
}
module_init(rgbfb_init);
module_exit(rgbfb_exit);
MODULE_LICENSE("GPL");
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