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36c9366e VW |
1 | /* |
2 | * drivers/video/pnx4008/pnxrgbfb.c | |
3 | * | |
4 | * PNX4008's framebuffer support | |
5 | * | |
6 | * Author: Grigory Tolstolytkin <gtolstolytkin@ru.mvista.com> | |
7 | * Based on Philips Semiconductors's code | |
8 | * | |
9 | * Copyrght (c) 2005 MontaVista Software, Inc. | |
10 | * Copyright (c) 2005 Philips Semiconductors | |
11 | * This file is licensed under the terms of the GNU General Public License | |
12 | * version 2. This program is licensed "as is" without any warranty of any | |
13 | * kind, whether express or implied. | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/errno.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/mm.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/vmalloc.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/fb.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/platform_device.h> | |
28 | ||
36c9366e VW |
29 | #include "sdum.h" |
30 | #include "fbcommon.h" | |
31 | ||
32 | static u32 colreg[16]; | |
33 | ||
34 | static struct fb_var_screeninfo rgbfb_var __initdata = { | |
35 | .xres = LCD_X_RES, | |
36 | .yres = LCD_Y_RES, | |
37 | .xres_virtual = LCD_X_RES, | |
38 | .yres_virtual = LCD_Y_RES, | |
39 | .bits_per_pixel = 32, | |
40 | .red.offset = 16, | |
41 | .red.length = 8, | |
42 | .green.offset = 8, | |
43 | .green.length = 8, | |
44 | .blue.offset = 0, | |
45 | .blue.length = 8, | |
46 | .left_margin = 0, | |
47 | .right_margin = 0, | |
48 | .upper_margin = 0, | |
49 | .lower_margin = 0, | |
50 | .vmode = FB_VMODE_NONINTERLACED, | |
51 | }; | |
52 | static struct fb_fix_screeninfo rgbfb_fix __initdata = { | |
53 | .id = "RGBFB", | |
54 | .line_length = LCD_X_RES * LCD_BBP, | |
55 | .type = FB_TYPE_PACKED_PIXELS, | |
56 | .visual = FB_VISUAL_TRUECOLOR, | |
57 | .xpanstep = 0, | |
58 | .ypanstep = 0, | |
59 | .ywrapstep = 0, | |
60 | .accel = FB_ACCEL_NONE, | |
61 | }; | |
62 | ||
63 | static int channel_owned; | |
64 | ||
65 | static int no_cursor(struct fb_info *info, struct fb_cursor *cursor) | |
66 | { | |
67 | return 0; | |
68 | } | |
69 | ||
70 | static int rgbfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, | |
71 | u_int transp, struct fb_info *info) | |
72 | { | |
73 | if (regno > 15) | |
74 | return 1; | |
75 | ||
76 | colreg[regno] = ((red & 0xff00) << 8) | (green & 0xff00) | | |
77 | ((blue & 0xff00) >> 8); | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static int rgbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
82 | { | |
83 | return pnx4008_sdum_mmap(info, vma, NULL); | |
84 | } | |
85 | ||
86 | static struct fb_ops rgbfb_ops = { | |
87 | .fb_mmap = rgbfb_mmap, | |
88 | .fb_setcolreg = rgbfb_setcolreg, | |
89 | .fb_fillrect = cfb_fillrect, | |
90 | .fb_copyarea = cfb_copyarea, | |
91 | .fb_imageblit = cfb_imageblit, | |
92 | }; | |
93 | ||
94 | static int rgbfb_remove(struct platform_device *pdev) | |
95 | { | |
96 | struct fb_info *info = platform_get_drvdata(pdev); | |
97 | ||
98 | if (info) { | |
99 | unregister_framebuffer(info); | |
100 | fb_dealloc_cmap(&info->cmap); | |
101 | framebuffer_release(info); | |
102 | platform_set_drvdata(pdev, NULL); | |
36c9366e VW |
103 | } |
104 | ||
105 | pnx4008_free_dum_channel(channel_owned, pdev->id); | |
106 | pnx4008_set_dum_exit_notification(pdev->id); | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static int __devinit rgbfb_probe(struct platform_device *pdev) | |
112 | { | |
113 | struct fb_info *info; | |
114 | struct dumchannel_uf chan_uf; | |
115 | int ret; | |
116 | char *option; | |
117 | ||
118 | info = framebuffer_alloc(sizeof(u32) * 16, &pdev->dev); | |
119 | if (!info) { | |
120 | ret = -ENOMEM; | |
121 | goto err; | |
122 | } | |
123 | ||
124 | pnx4008_get_fb_addresses(FB_TYPE_RGB, (void **)&info->screen_base, | |
125 | (dma_addr_t *) &rgbfb_fix.smem_start, | |
126 | &rgbfb_fix.smem_len); | |
127 | ||
128 | if ((ret = pnx4008_alloc_dum_channel(pdev->id)) < 0) | |
129 | goto err0; | |
130 | else { | |
131 | channel_owned = ret; | |
132 | chan_uf.channelnr = channel_owned; | |
133 | chan_uf.dirty = (u32 *) NULL; | |
134 | chan_uf.source = (u32 *) rgbfb_fix.smem_start; | |
135 | chan_uf.x_offset = 0; | |
136 | chan_uf.y_offset = 0; | |
137 | chan_uf.width = LCD_X_RES; | |
138 | chan_uf.height = LCD_Y_RES; | |
139 | ||
140 | if ((ret = pnx4008_put_dum_channel_uf(chan_uf, pdev->id))< 0) | |
141 | goto err1; | |
142 | ||
143 | if ((ret = | |
144 | pnx4008_set_dum_channel_sync(channel_owned, CONF_SYNC_ON, | |
145 | pdev->id)) < 0) | |
146 | goto err1; | |
147 | ||
148 | if ((ret = | |
149 | pnx4008_set_dum_channel_dirty_detect(channel_owned, | |
150 | CONF_DIRTYDETECTION_ON, | |
151 | pdev->id)) < 0) | |
152 | goto err1; | |
153 | } | |
154 | ||
3b9c10dc VW |
155 | if (!fb_get_options("pnxrgbfb", &option) && option && |
156 | !strcmp(option, "nocursor")) | |
36c9366e VW |
157 | rgbfb_ops.fb_cursor = no_cursor; |
158 | ||
159 | info->node = -1; | |
160 | info->flags = FBINFO_FLAG_DEFAULT; | |
161 | info->fbops = &rgbfb_ops; | |
162 | info->fix = rgbfb_fix; | |
163 | info->var = rgbfb_var; | |
164 | info->screen_size = rgbfb_fix.smem_len; | |
165 | info->pseudo_palette = info->par; | |
166 | info->par = NULL; | |
167 | ||
168 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
169 | if (ret < 0) | |
7a6278e5 | 170 | goto err1; |
36c9366e VW |
171 | |
172 | ret = register_framebuffer(info); | |
173 | if (ret < 0) | |
7a6278e5 | 174 | goto err2; |
36c9366e VW |
175 | platform_set_drvdata(pdev, info); |
176 | ||
177 | return 0; | |
178 | ||
36c9366e | 179 | err2: |
7a6278e5 | 180 | fb_dealloc_cmap(&info->cmap); |
36c9366e VW |
181 | err1: |
182 | pnx4008_free_dum_channel(channel_owned, pdev->id); | |
183 | err0: | |
7a6278e5 | 184 | framebuffer_release(info); |
36c9366e VW |
185 | err: |
186 | return ret; | |
187 | } | |
188 | ||
189 | static struct platform_driver rgbfb_driver = { | |
190 | .driver = { | |
84a763e3 | 191 | .name = "pnx4008-rgbfb", |
36c9366e VW |
192 | }, |
193 | .probe = rgbfb_probe, | |
194 | .remove = rgbfb_remove, | |
195 | }; | |
196 | ||
197 | static int __init rgbfb_init(void) | |
198 | { | |
199 | return platform_driver_register(&rgbfb_driver); | |
200 | } | |
201 | ||
202 | static void __exit rgbfb_exit(void) | |
203 | { | |
204 | platform_driver_unregister(&rgbfb_driver); | |
205 | } | |
206 | ||
207 | module_init(rgbfb_init); | |
208 | module_exit(rgbfb_exit); | |
209 | ||
210 | MODULE_LICENSE("GPL"); |