1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* 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) && 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 = "pnx4008-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");
|
