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10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/errno.h>
13#include <linux/string.h>
14#include <linux/delay.h>
15#include <linux/init.h>
16#include <linux/fb.h>
17#include <linux/mm.h>
18#include <linux/of_device.h>
19
20#include <asm/io.h>
21#include <asm/fbio.h>
22
23#include "sbuslib.h"
24
25
26
27
28
29static int p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
30 unsigned, struct fb_info *);
31static int p9100_blank(int, struct fb_info *);
32
33static int p9100_mmap(struct fb_info *, struct vm_area_struct *);
34static int p9100_ioctl(struct fb_info *, unsigned int, unsigned long);
35
36
37
38
39
40static const struct fb_ops p9100_ops = {
41 .owner = THIS_MODULE,
42 .fb_setcolreg = p9100_setcolreg,
43 .fb_blank = p9100_blank,
44 .fb_fillrect = cfb_fillrect,
45 .fb_copyarea = cfb_copyarea,
46 .fb_imageblit = cfb_imageblit,
47 .fb_mmap = p9100_mmap,
48 .fb_ioctl = p9100_ioctl,
49#ifdef CONFIG_COMPAT
50 .fb_compat_ioctl = sbusfb_compat_ioctl,
51#endif
52};
53
54
55#define P9100_SYSCTL_OFF 0x0UL
56#define P9100_VIDEOCTL_OFF 0x100UL
57#define P9100_VRAMCTL_OFF 0x180UL
58#define P9100_RAMDAC_OFF 0x200UL
59#define P9100_VIDEOCOPROC_OFF 0x400UL
60
61
62#define P9100_CMD_OFF 0x0UL
63
64
65#define P9100_FB_OFF 0x0UL
66
67
68#define SYS_CONFIG_PIXELSIZE_SHIFT 26
69
70#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20
71
72struct p9100_regs {
73
74 u32 sys_base;
75 u32 sys_config;
76 u32 sys_intr;
77 u32 sys_int_ena;
78 u32 sys_alt_rd;
79 u32 sys_alt_wr;
80 u32 sys_xxx[58];
81
82
83 u32 vid_base;
84 u32 vid_hcnt;
85 u32 vid_htotal;
86 u32 vid_hsync_rise;
87 u32 vid_hblank_rise;
88 u32 vid_hblank_fall;
89 u32 vid_hcnt_preload;
90 u32 vid_vcnt;
91 u32 vid_vlen;
92 u32 vid_vsync_rise;
93 u32 vid_vblank_rise;
94 u32 vid_vblank_fall;
95 u32 vid_vcnt_preload;
96 u32 vid_screenpaint_addr;
97 u32 vid_screenpaint_timectl1;
98 u32 vid_screenpaint_qsfcnt;
99 u32 vid_screenpaint_timectl2;
100 u32 vid_xxx[15];
101
102
103 u32 vram_base;
104 u32 vram_memcfg;
105 u32 vram_refresh_pd;
106 u32 vram_refresh_cnt;
107 u32 vram_raslo_max;
108 u32 vram_raslo_cur;
109 u32 pwrup_cfg;
110 u32 vram_xxx[25];
111
112
113 u32 ramdac_cmap_wridx;
114 u32 ramdac_palette_data;
115 u32 ramdac_pixel_mask;
116 u32 ramdac_palette_rdaddr;
117 u32 ramdac_idx_lo;
118 u32 ramdac_idx_hi;
119 u32 ramdac_idx_data;
120 u32 ramdac_idx_ctl;
121 u32 ramdac_xxx[1784];
122};
123
124struct p9100_cmd_parameng {
125 u32 parameng_status;
126 u32 parameng_bltcmd;
127 u32 parameng_quadcmd;
128};
129
130struct p9100_par {
131 spinlock_t lock;
132 struct p9100_regs __iomem *regs;
133
134 u32 flags;
135#define P9100_FLAG_BLANKED 0x00000001
136
137 unsigned long which_io;
138};
139
140
141
142
143
144
145
146
147
148
149static int p9100_setcolreg(unsigned regno,
150 unsigned red, unsigned green, unsigned blue,
151 unsigned transp, struct fb_info *info)
152{
153 struct p9100_par *par = (struct p9100_par *) info->par;
154 struct p9100_regs __iomem *regs = par->regs;
155 unsigned long flags;
156
157 if (regno >= 256)
158 return 1;
159
160 red >>= 8;
161 green >>= 8;
162 blue >>= 8;
163
164 spin_lock_irqsave(&par->lock, flags);
165
166 sbus_writel((regno << 16), ®s->ramdac_cmap_wridx);
167 sbus_writel((red << 16), ®s->ramdac_palette_data);
168 sbus_writel((green << 16), ®s->ramdac_palette_data);
169 sbus_writel((blue << 16), ®s->ramdac_palette_data);
170
171 spin_unlock_irqrestore(&par->lock, flags);
172
173 return 0;
174}
175
176
177
178
179
180
181static int
182p9100_blank(int blank, struct fb_info *info)
183{
184 struct p9100_par *par = (struct p9100_par *) info->par;
185 struct p9100_regs __iomem *regs = par->regs;
186 unsigned long flags;
187 u32 val;
188
189 spin_lock_irqsave(&par->lock, flags);
190
191 switch (blank) {
192 case FB_BLANK_UNBLANK:
193 val = sbus_readl(®s->vid_screenpaint_timectl1);
194 val |= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
195 sbus_writel(val, ®s->vid_screenpaint_timectl1);
196 par->flags &= ~P9100_FLAG_BLANKED;
197 break;
198
199 case FB_BLANK_NORMAL:
200 case FB_BLANK_VSYNC_SUSPEND:
201 case FB_BLANK_HSYNC_SUSPEND:
202 case FB_BLANK_POWERDOWN:
203 val = sbus_readl(®s->vid_screenpaint_timectl1);
204 val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
205 sbus_writel(val, ®s->vid_screenpaint_timectl1);
206 par->flags |= P9100_FLAG_BLANKED;
207 break;
208 }
209
210 spin_unlock_irqrestore(&par->lock, flags);
211
212 return 0;
213}
214
215static struct sbus_mmap_map p9100_mmap_map[] = {
216 { CG3_MMAP_OFFSET, 0, SBUS_MMAP_FBSIZE(1) },
217 { 0, 0, 0 }
218};
219
220static int p9100_mmap(struct fb_info *info, struct vm_area_struct *vma)
221{
222 struct p9100_par *par = (struct p9100_par *)info->par;
223
224 return sbusfb_mmap_helper(p9100_mmap_map,
225 info->fix.smem_start, info->fix.smem_len,
226 par->which_io, vma);
227}
228
229static int p9100_ioctl(struct fb_info *info, unsigned int cmd,
230 unsigned long arg)
231{
232
233 return sbusfb_ioctl_helper(cmd, arg, info,
234 FBTYPE_SUN3COLOR, 8, info->fix.smem_len);
235}
236
237
238
239
240
241static void p9100_init_fix(struct fb_info *info, int linebytes, struct device_node *dp)
242{
243 snprintf(info->fix.id, sizeof(info->fix.id), "%pOFn", dp);
244
245 info->fix.type = FB_TYPE_PACKED_PIXELS;
246 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
247
248 info->fix.line_length = linebytes;
249
250 info->fix.accel = FB_ACCEL_SUN_CGTHREE;
251}
252
253static int p9100_probe(struct platform_device *op)
254{
255 struct device_node *dp = op->dev.of_node;
256 struct fb_info *info;
257 struct p9100_par *par;
258 int linebytes, err;
259
260 info = framebuffer_alloc(sizeof(struct p9100_par), &op->dev);
261
262 err = -ENOMEM;
263 if (!info)
264 goto out_err;
265 par = info->par;
266
267 spin_lock_init(&par->lock);
268
269
270 info->fix.smem_start = op->resource[2].start;
271 par->which_io = op->resource[2].flags & IORESOURCE_BITS;
272
273 sbusfb_fill_var(&info->var, dp, 8);
274 info->var.red.length = 8;
275 info->var.green.length = 8;
276 info->var.blue.length = 8;
277
278 linebytes = of_getintprop_default(dp, "linebytes", info->var.xres);
279 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
280
281 par->regs = of_ioremap(&op->resource[0], 0,
282 sizeof(struct p9100_regs), "p9100 regs");
283 if (!par->regs)
284 goto out_release_fb;
285
286 info->flags = FBINFO_DEFAULT;
287 info->fbops = &p9100_ops;
288 info->screen_base = of_ioremap(&op->resource[2], 0,
289 info->fix.smem_len, "p9100 ram");
290 if (!info->screen_base)
291 goto out_unmap_regs;
292
293 p9100_blank(FB_BLANK_UNBLANK, info);
294
295 if (fb_alloc_cmap(&info->cmap, 256, 0))
296 goto out_unmap_screen;
297
298 p9100_init_fix(info, linebytes, dp);
299
300 err = register_framebuffer(info);
301 if (err < 0)
302 goto out_dealloc_cmap;
303
304 fb_set_cmap(&info->cmap, info);
305
306 dev_set_drvdata(&op->dev, info);
307
308 printk(KERN_INFO "%pOF: p9100 at %lx:%lx\n",
309 dp,
310 par->which_io, info->fix.smem_start);
311
312 return 0;
313
314out_dealloc_cmap:
315 fb_dealloc_cmap(&info->cmap);
316
317out_unmap_screen:
318 of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
319
320out_unmap_regs:
321 of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
322
323out_release_fb:
324 framebuffer_release(info);
325
326out_err:
327 return err;
328}
329
330static int p9100_remove(struct platform_device *op)
331{
332 struct fb_info *info = dev_get_drvdata(&op->dev);
333 struct p9100_par *par = info->par;
334
335 unregister_framebuffer(info);
336 fb_dealloc_cmap(&info->cmap);
337
338 of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
339 of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
340
341 framebuffer_release(info);
342
343 return 0;
344}
345
346static const struct of_device_id p9100_match[] = {
347 {
348 .name = "p9100",
349 },
350 {},
351};
352MODULE_DEVICE_TABLE(of, p9100_match);
353
354static struct platform_driver p9100_driver = {
355 .driver = {
356 .name = "p9100",
357 .of_match_table = p9100_match,
358 },
359 .probe = p9100_probe,
360 .remove = p9100_remove,
361};
362
363static int __init p9100_init(void)
364{
365 if (fb_get_options("p9100fb", NULL))
366 return -ENODEV;
367
368 return platform_driver_register(&p9100_driver);
369}
370
371static void __exit p9100_exit(void)
372{
373 platform_driver_unregister(&p9100_driver);
374}
375
376module_init(p9100_init);
377module_exit(p9100_exit);
378
379MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
380MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
381MODULE_VERSION("2.0");
382MODULE_LICENSE("GPL");
383
