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9#include <linux/module.h>
10#include <linux/kernel.h>
11#include <linux/errno.h>
12#include <linux/string.h>
13#include <linux/delay.h>
14#include <linux/init.h>
15#include <linux/fb.h>
16#include <linux/mm.h>
17#include <linux/of_device.h>
18
19#include <asm/io.h>
20#include <asm/fbio.h>
21
22#include "sbuslib.h"
23
24
25
26
27
28static int p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
29 unsigned, struct fb_info *);
30static int p9100_blank(int, struct fb_info *);
31
32static int p9100_mmap(struct fb_info *, struct vm_area_struct *);
33static int p9100_ioctl(struct fb_info *, unsigned int, unsigned long);
34
35
36
37
38
39static struct fb_ops p9100_ops = {
40 .owner = THIS_MODULE,
41 .fb_setcolreg = p9100_setcolreg,
42 .fb_blank = p9100_blank,
43 .fb_fillrect = cfb_fillrect,
44 .fb_copyarea = cfb_copyarea,
45 .fb_imageblit = cfb_imageblit,
46 .fb_mmap = p9100_mmap,
47 .fb_ioctl = p9100_ioctl,
48#ifdef CONFIG_COMPAT
49 .fb_compat_ioctl = sbusfb_compat_ioctl,
50#endif
51};
52
53
54#define P9100_SYSCTL_OFF 0x0UL
55#define P9100_VIDEOCTL_OFF 0x100UL
56#define P9100_VRAMCTL_OFF 0x180UL
57#define P9100_RAMDAC_OFF 0x200UL
58#define P9100_VIDEOCOPROC_OFF 0x400UL
59
60
61#define P9100_CMD_OFF 0x0UL
62
63
64#define P9100_FB_OFF 0x0UL
65
66
67#define SYS_CONFIG_PIXELSIZE_SHIFT 26
68
69#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20
70
71struct p9100_regs {
72
73 u32 sys_base;
74 u32 sys_config;
75 u32 sys_intr;
76 u32 sys_int_ena;
77 u32 sys_alt_rd;
78 u32 sys_alt_wr;
79 u32 sys_xxx[58];
80
81
82 u32 vid_base;
83 u32 vid_hcnt;
84 u32 vid_htotal;
85 u32 vid_hsync_rise;
86 u32 vid_hblank_rise;
87 u32 vid_hblank_fall;
88 u32 vid_hcnt_preload;
89 u32 vid_vcnt;
90 u32 vid_vlen;
91 u32 vid_vsync_rise;
92 u32 vid_vblank_rise;
93 u32 vid_vblank_fall;
94 u32 vid_vcnt_preload;
95 u32 vid_screenpaint_addr;
96 u32 vid_screenpaint_timectl1;
97 u32 vid_screenpaint_qsfcnt;
98 u32 vid_screenpaint_timectl2;
99 u32 vid_xxx[15];
100
101
102 u32 vram_base;
103 u32 vram_memcfg;
104 u32 vram_refresh_pd;
105 u32 vram_refresh_cnt;
106 u32 vram_raslo_max;
107 u32 vram_raslo_cur;
108 u32 pwrup_cfg;
109 u32 vram_xxx[25];
110
111
112 u32 ramdac_cmap_wridx;
113 u32 ramdac_palette_data;
114 u32 ramdac_pixel_mask;
115 u32 ramdac_palette_rdaddr;
116 u32 ramdac_idx_lo;
117 u32 ramdac_idx_hi;
118 u32 ramdac_idx_data;
119 u32 ramdac_idx_ctl;
120 u32 ramdac_xxx[1784];
121};
122
123struct p9100_cmd_parameng {
124 u32 parameng_status;
125 u32 parameng_bltcmd;
126 u32 parameng_quadcmd;
127};
128
129struct p9100_par {
130 spinlock_t lock;
131 struct p9100_regs __iomem *regs;
132
133 u32 flags;
134#define P9100_FLAG_BLANKED 0x00000001
135
136 unsigned long which_io;
137};
138
139
140
141
142
143
144
145
146
147
148static int p9100_setcolreg(unsigned regno,
149 unsigned red, unsigned green, unsigned blue,
150 unsigned transp, struct fb_info *info)
151{
152 struct p9100_par *par = (struct p9100_par *) info->par;
153 struct p9100_regs __iomem *regs = par->regs;
154 unsigned long flags;
155
156 if (regno >= 256)
157 return 1;
158
159 red >>= 8;
160 green >>= 8;
161 blue >>= 8;
162
163 spin_lock_irqsave(&par->lock, flags);
164
165 sbus_writel((regno << 16), ®s->ramdac_cmap_wridx);
166 sbus_writel((red << 16), ®s->ramdac_palette_data);
167 sbus_writel((green << 16), ®s->ramdac_palette_data);
168 sbus_writel((blue << 16), ®s->ramdac_palette_data);
169
170 spin_unlock_irqrestore(&par->lock, flags);
171
172 return 0;
173}
174
175
176
177
178
179
180static int
181p9100_blank(int blank, struct fb_info *info)
182{
183 struct p9100_par *par = (struct p9100_par *) info->par;
184 struct p9100_regs __iomem *regs = par->regs;
185 unsigned long flags;
186 u32 val;
187
188 spin_lock_irqsave(&par->lock, flags);
189
190 switch (blank) {
191 case FB_BLANK_UNBLANK:
192 val = sbus_readl(®s->vid_screenpaint_timectl1);
193 val |= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
194 sbus_writel(val, ®s->vid_screenpaint_timectl1);
195 par->flags &= ~P9100_FLAG_BLANKED;
196 break;
197
198 case FB_BLANK_NORMAL:
199 case FB_BLANK_VSYNC_SUSPEND:
200 case FB_BLANK_HSYNC_SUSPEND:
201 case FB_BLANK_POWERDOWN:
202 val = sbus_readl(®s->vid_screenpaint_timectl1);
203 val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
204 sbus_writel(val, ®s->vid_screenpaint_timectl1);
205 par->flags |= P9100_FLAG_BLANKED;
206 break;
207 }
208
209 spin_unlock_irqrestore(&par->lock, flags);
210
211 return 0;
212}
213
214static struct sbus_mmap_map p9100_mmap_map[] = {
215 { CG3_MMAP_OFFSET, 0, SBUS_MMAP_FBSIZE(1) },
216 { 0, 0, 0 }
217};
218
219static int p9100_mmap(struct fb_info *info, struct vm_area_struct *vma)
220{
221 struct p9100_par *par = (struct p9100_par *)info->par;
222
223 return sbusfb_mmap_helper(p9100_mmap_map,
224 info->fix.smem_start, info->fix.smem_len,
225 par->which_io, vma);
226}
227
228static int p9100_ioctl(struct fb_info *info, unsigned int cmd,
229 unsigned long arg)
230{
231
232 return sbusfb_ioctl_helper(cmd, arg, info,
233 FBTYPE_SUN3COLOR, 8, info->fix.smem_len);
234}
235
236
237
238
239
240static void p9100_init_fix(struct fb_info *info, int linebytes, struct device_node *dp)
241{
242 strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
243
244 info->fix.type = FB_TYPE_PACKED_PIXELS;
245 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
246
247 info->fix.line_length = linebytes;
248
249 info->fix.accel = FB_ACCEL_SUN_CGTHREE;
250}
251
252static int p9100_probe(struct platform_device *op)
253{
254 struct device_node *dp = op->dev.of_node;
255 struct fb_info *info;
256 struct p9100_par *par;
257 int linebytes, err;
258
259 info = framebuffer_alloc(sizeof(struct p9100_par), &op->dev);
260
261 err = -ENOMEM;
262 if (!info)
263 goto out_err;
264 par = info->par;
265
266 spin_lock_init(&par->lock);
267
268
269 info->fix.smem_start = op->resource[2].start;
270 par->which_io = op->resource[2].flags & IORESOURCE_BITS;
271
272 sbusfb_fill_var(&info->var, dp, 8);
273 info->var.red.length = 8;
274 info->var.green.length = 8;
275 info->var.blue.length = 8;
276
277 linebytes = of_getintprop_default(dp, "linebytes", info->var.xres);
278 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
279
280 par->regs = of_ioremap(&op->resource[0], 0,
281 sizeof(struct p9100_regs), "p9100 regs");
282 if (!par->regs)
283 goto out_release_fb;
284
285 info->flags = FBINFO_DEFAULT;
286 info->fbops = &p9100_ops;
287 info->screen_base = of_ioremap(&op->resource[2], 0,
288 info->fix.smem_len, "p9100 ram");
289 if (!info->screen_base)
290 goto out_unmap_regs;
291
292 p9100_blank(FB_BLANK_UNBLANK, info);
293
294 if (fb_alloc_cmap(&info->cmap, 256, 0))
295 goto out_unmap_screen;
296
297 p9100_init_fix(info, linebytes, dp);
298
299 err = register_framebuffer(info);
300 if (err < 0)
301 goto out_dealloc_cmap;
302
303 fb_set_cmap(&info->cmap, info);
304
305 dev_set_drvdata(&op->dev, info);
306
307 printk(KERN_INFO "%s: p9100 at %lx:%lx\n",
308 dp->full_name,
309 par->which_io, info->fix.smem_start);
310
311 return 0;
312
313out_dealloc_cmap:
314 fb_dealloc_cmap(&info->cmap);
315
316out_unmap_screen:
317 of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
318
319out_unmap_regs:
320 of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
321
322out_release_fb:
323 framebuffer_release(info);
324
325out_err:
326 return err;
327}
328
329static int p9100_remove(struct platform_device *op)
330{
331 struct fb_info *info = dev_get_drvdata(&op->dev);
332 struct p9100_par *par = info->par;
333
334 unregister_framebuffer(info);
335 fb_dealloc_cmap(&info->cmap);
336
337 of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
338 of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
339
340 framebuffer_release(info);
341
342 return 0;
343}
344
345static const struct of_device_id p9100_match[] = {
346 {
347 .name = "p9100",
348 },
349 {},
350};
351MODULE_DEVICE_TABLE(of, p9100_match);
352
353static struct platform_driver p9100_driver = {
354 .driver = {
355 .name = "p9100",
356 .of_match_table = p9100_match,
357 },
358 .probe = p9100_probe,
359 .remove = p9100_remove,
360};
361
362static int __init p9100_init(void)
363{
364 if (fb_get_options("p9100fb", NULL))
365 return -ENODEV;
366
367 return platform_driver_register(&p9100_driver);
368}
369
370static void __exit p9100_exit(void)
371{
372 platform_driver_unregister(&p9100_driver);
373}
374
375module_init(p9100_init);
376module_exit(p9100_exit);
377
378MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
379MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
380MODULE_VERSION("2.0");
381MODULE_LICENSE("GPL");
382
