[PATCH] hwmon: hwmon vs i2c, second round (03/11)
[linux-2.6] / drivers / video / aty / radeonfb.h
1 #ifndef __RADEONFB_H__
2 #define __RADEONFB_H__
3
4 #include <linux/config.h>
5 #include <linux/module.h>
6 #include <linux/kernel.h>
7 #include <linux/sched.h>
8 #include <linux/delay.h>
9 #include <linux/pci.h>
10 #include <linux/fb.h>
11
12
13 #include <linux/i2c.h>
14 #include <linux/i2c-id.h>
15 #include <linux/i2c-algo-bit.h>
16
17 #include <asm/io.h>
18
19 #ifdef CONFIG_PPC_OF
20 #include <asm/prom.h>
21 #endif
22
23 #include <video/radeon.h>
24
25 /***************************************************************
26  * Most of the definitions here are adapted right from XFree86 *
27  ***************************************************************/
28
29
30 /*
31  * Chip families. Must fit in the low 16 bits of a long word
32  */
33 enum radeon_family {
34         CHIP_FAMILY_UNKNOW,
35         CHIP_FAMILY_LEGACY,
36         CHIP_FAMILY_RADEON,
37         CHIP_FAMILY_RV100,
38         CHIP_FAMILY_RS100,    /* U1 (IGP320M) or A3 (IGP320)*/
39         CHIP_FAMILY_RV200,
40         CHIP_FAMILY_RS200,    /* U2 (IGP330M/340M/350M) or A4 (IGP330/340/345/350),
41                                  RS250 (IGP 7000) */
42         CHIP_FAMILY_R200,
43         CHIP_FAMILY_RV250,
44         CHIP_FAMILY_RS300,    /* Radeon 9000 IGP */
45         CHIP_FAMILY_RV280,
46         CHIP_FAMILY_R300,
47         CHIP_FAMILY_R350,
48         CHIP_FAMILY_RV350,
49         CHIP_FAMILY_RV380,    /* RV370/RV380/M22/M24 */
50         CHIP_FAMILY_R420,     /* R420/R423/M18 */
51         CHIP_FAMILY_LAST,
52 };
53
54 #define IS_RV100_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_RV100)  || \
55                                  ((rinfo)->family == CHIP_FAMILY_RV200)  || \
56                                  ((rinfo)->family == CHIP_FAMILY_RS100)  || \
57                                  ((rinfo)->family == CHIP_FAMILY_RS200)  || \
58                                  ((rinfo)->family == CHIP_FAMILY_RV250)  || \
59                                  ((rinfo)->family == CHIP_FAMILY_RV280)  || \
60                                  ((rinfo)->family == CHIP_FAMILY_RS300))
61
62
63 #define IS_R300_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_R300)  || \
64                                 ((rinfo)->family == CHIP_FAMILY_RV350) || \
65                                 ((rinfo)->family == CHIP_FAMILY_R350)  || \
66                                 ((rinfo)->family == CHIP_FAMILY_RV380) || \
67                                 ((rinfo)->family == CHIP_FAMILY_R420))
68
69 /*
70  * Chip flags
71  */
72 enum radeon_chip_flags {
73         CHIP_FAMILY_MASK        = 0x0000ffffUL,
74         CHIP_FLAGS_MASK         = 0xffff0000UL,
75         CHIP_IS_MOBILITY        = 0x00010000UL,
76         CHIP_IS_IGP             = 0x00020000UL,
77         CHIP_HAS_CRTC2          = 0x00040000UL, 
78 };
79
80 /*
81  * Errata workarounds
82  */
83 enum radeon_errata {
84         CHIP_ERRATA_R300_CG             = 0x00000001,
85         CHIP_ERRATA_PLL_DUMMYREADS      = 0x00000002,
86         CHIP_ERRATA_PLL_DELAY           = 0x00000004,
87 };
88
89
90 /*
91  * Monitor types
92  */
93 enum radeon_montype {
94         MT_NONE = 0,
95         MT_CRT,         /* CRT */
96         MT_LCD,         /* LCD */
97         MT_DFP,         /* DVI */
98         MT_CTV,         /* composite TV */
99         MT_STV          /* S-Video out */
100 };
101
102 /*
103  * DDC i2c ports
104  */
105 enum ddc_type {
106         ddc_none,
107         ddc_monid,
108         ddc_dvi,
109         ddc_vga,
110         ddc_crt2,
111 };
112
113 /*
114  * Connector types
115  */
116 enum conn_type {
117         conn_none,
118         conn_proprietary,
119         conn_crt,
120         conn_DVI_I,
121         conn_DVI_D,
122 };
123
124
125 /*
126  * PLL infos
127  */
128 struct pll_info {
129         int ppll_max;
130         int ppll_min;
131         int sclk, mclk;
132         int ref_div;
133         int ref_clk;
134 };
135
136
137 /*
138  * This structure contains the various registers manipulated by this
139  * driver for setting or restoring a mode. It's mostly copied from
140  * XFree's RADEONSaveRec structure. A few chip settings might still be
141  * tweaked without beeing reflected or saved in these registers though
142  */
143 struct radeon_regs {
144         /* Common registers */
145         u32             ovr_clr;
146         u32             ovr_wid_left_right;
147         u32             ovr_wid_top_bottom;
148         u32             ov0_scale_cntl;
149         u32             mpp_tb_config;
150         u32             mpp_gp_config;
151         u32             subpic_cntl;
152         u32             viph_control;
153         u32             i2c_cntl_1;
154         u32             gen_int_cntl;
155         u32             cap0_trig_cntl;
156         u32             cap1_trig_cntl;
157         u32             bus_cntl;
158         u32             surface_cntl;
159         u32             bios_5_scratch;
160
161         /* Other registers to save for VT switches or driver load/unload */
162         u32             dp_datatype;
163         u32             rbbm_soft_reset;
164         u32             clock_cntl_index;
165         u32             amcgpio_en_reg;
166         u32             amcgpio_mask;
167
168         /* Surface/tiling registers */
169         u32             surf_lower_bound[8];
170         u32             surf_upper_bound[8];
171         u32             surf_info[8];
172
173         /* CRTC registers */
174         u32             crtc_gen_cntl;
175         u32             crtc_ext_cntl;
176         u32             dac_cntl;
177         u32             crtc_h_total_disp;
178         u32             crtc_h_sync_strt_wid;
179         u32             crtc_v_total_disp;
180         u32             crtc_v_sync_strt_wid;
181         u32             crtc_offset;
182         u32             crtc_offset_cntl;
183         u32             crtc_pitch;
184         u32             disp_merge_cntl;
185         u32             grph_buffer_cntl;
186         u32             crtc_more_cntl;
187
188         /* CRTC2 registers */
189         u32             crtc2_gen_cntl;
190         u32             dac2_cntl;
191         u32             disp_output_cntl;
192         u32             disp_hw_debug;
193         u32             disp2_merge_cntl;
194         u32             grph2_buffer_cntl;
195         u32             crtc2_h_total_disp;
196         u32             crtc2_h_sync_strt_wid;
197         u32             crtc2_v_total_disp;
198         u32             crtc2_v_sync_strt_wid;
199         u32             crtc2_offset;
200         u32             crtc2_offset_cntl;
201         u32             crtc2_pitch;
202
203         /* Flat panel regs */
204         u32             fp_crtc_h_total_disp;
205         u32             fp_crtc_v_total_disp;
206         u32             fp_gen_cntl;
207         u32             fp2_gen_cntl;
208         u32             fp_h_sync_strt_wid;
209         u32             fp2_h_sync_strt_wid;
210         u32             fp_horz_stretch;
211         u32             fp_panel_cntl;
212         u32             fp_v_sync_strt_wid;
213         u32             fp2_v_sync_strt_wid;
214         u32             fp_vert_stretch;
215         u32             lvds_gen_cntl;
216         u32             lvds_pll_cntl;
217         u32             tmds_crc;
218         u32             tmds_transmitter_cntl;
219
220         /* Computed values for PLL */
221         u32             dot_clock_freq;
222         int             feedback_div;
223         int             post_div;       
224
225         /* PLL registers */
226         u32             ppll_div_3;
227         u32             ppll_ref_div;
228         u32             vclk_ecp_cntl;
229         u32             clk_cntl_index;
230
231         /* Computed values for PLL2 */
232         u32             dot_clock_freq_2;
233         int             feedback_div_2;
234         int             post_div_2;
235
236         /* PLL2 registers */
237         u32             p2pll_ref_div;
238         u32             p2pll_div_0;
239         u32             htotal_cntl2;
240
241         /* Palette */
242         int             palette_valid;
243 };
244
245 struct panel_info {
246         int xres, yres;
247         int valid;
248         int clock;
249         int hOver_plus, hSync_width, hblank;
250         int vOver_plus, vSync_width, vblank;
251         int hAct_high, vAct_high, interlaced;
252         int pwr_delay;
253         int use_bios_dividers;
254         int ref_divider;
255         int post_divider;
256         int fbk_divider;
257 };
258
259 struct radeonfb_info;
260
261 #ifdef CONFIG_FB_RADEON_I2C
262 struct radeon_i2c_chan {
263         struct radeonfb_info            *rinfo;
264         u32                             ddc_reg;
265         struct i2c_adapter              adapter;
266         struct i2c_algo_bit_data        algo;
267 };
268 #endif
269
270 enum radeon_pm_mode {
271         radeon_pm_none  = 0,            /* Nothing supported */
272         radeon_pm_d2    = 0x00000001,   /* Can do D2 state */
273         radeon_pm_off   = 0x00000002,   /* Can resume from D3 cold */
274 };
275
276 struct radeonfb_info {
277         struct fb_info          *info;
278
279         struct radeon_regs      state;
280         struct radeon_regs      init_state;
281
282         char                    name[DEVICE_NAME_SIZE];
283
284         unsigned long           mmio_base_phys;
285         unsigned long           fb_base_phys;
286
287         void __iomem            *mmio_base;
288         void __iomem            *fb_base;
289
290         unsigned long           fb_local_base;
291
292         struct pci_dev          *pdev;
293 #ifdef CONFIG_PPC_OF
294         struct device_node      *of_node;
295 #endif
296
297         void __iomem            *bios_seg;
298         int                     fp_bios_start;
299
300         u32                     pseudo_palette[17];
301         struct { u8 red, green, blue, pad; }
302                                 palette[256];
303
304         int                     chipset;
305         u8                      family;
306         u8                      rev;
307         unsigned int            errata;
308         unsigned long           video_ram;
309         unsigned long           mapped_vram;
310         int                     vram_width;
311         int                     vram_ddr;
312
313         int                     pitch, bpp, depth;
314
315         int                     has_CRTC2;
316         int                     is_mobility;
317         int                     is_IGP;
318         int                     reversed_DAC;
319         int                     reversed_TMDS;
320         struct panel_info       panel_info;
321         int                     mon1_type;
322         u8                      *mon1_EDID;
323         struct fb_videomode     *mon1_modedb;
324         int                     mon1_dbsize;
325         int                     mon2_type;
326         u8                      *mon2_EDID;
327
328         u32                     dp_gui_master_cntl;
329
330         struct pll_info         pll;
331
332         int                     mtrr_hdl;
333
334         int                     pm_reg;
335         u32                     save_regs[100];
336         int                     asleep;
337         int                     lock_blank;
338         int                     dynclk;
339         int                     no_schedule;
340         enum radeon_pm_mode     pm_mode;
341         void                    (*reinit_func)(struct radeonfb_info *rinfo);
342
343         /* Lock on register access */
344         spinlock_t              reg_lock;
345
346         /* Timer used for delayed LVDS operations */
347         struct timer_list       lvds_timer;
348         u32                     pending_lvds_gen_cntl;
349
350 #ifdef CONFIG_FB_RADEON_I2C
351         struct radeon_i2c_chan  i2c[4];
352 #endif
353
354         u32                     cfg_save[64];
355 };
356
357
358 #define PRIMARY_MONITOR(rinfo)  (rinfo->mon1_type)
359
360
361 /*
362  * Debugging stuffs
363  */
364 #ifdef CONFIG_FB_RADEON_DEBUG
365 #define DEBUG           1
366 #else
367 #define DEBUG           0
368 #endif
369
370 #if DEBUG
371 #define RTRACE          printk
372 #else
373 #define RTRACE          if(0) printk
374 #endif
375
376
377 /*
378  * IO macros
379  */
380
381 /* Note about this function: we have some rare cases where we must not schedule,
382  * this typically happen with our special "wake up early" hook which allows us to
383  * wake up the graphic chip (and thus get the console back) before everything else
384  * on some machines that support that mecanism. At this point, interrupts are off
385  * and scheduling is not permitted
386  */
387 static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
388 {
389         if (rinfo->no_schedule || oops_in_progress)
390                 mdelay(ms);
391         else
392                 msleep(ms);
393 }
394
395
396 #define INREG8(addr)            readb((rinfo->mmio_base)+addr)
397 #define OUTREG8(addr,val)       writeb(val, (rinfo->mmio_base)+addr)
398 #define INREG(addr)             readl((rinfo->mmio_base)+addr)
399 #define OUTREG(addr,val)        writel(val, (rinfo->mmio_base)+addr)
400
401 static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
402                        u32 val, u32 mask)
403 {
404         unsigned long flags;
405         unsigned int tmp;
406
407         spin_lock_irqsave(&rinfo->reg_lock, flags);
408         tmp = INREG(addr);
409         tmp &= (mask);
410         tmp |= (val);
411         OUTREG(addr, tmp);
412         spin_unlock_irqrestore(&rinfo->reg_lock, flags);
413 }
414
415 #define OUTREGP(addr,val,mask)  _OUTREGP(rinfo, addr, val,mask)
416
417 /*
418  * Note about PLL register accesses:
419  *
420  * I have removed the spinlock on them on purpose. The driver now
421  * expects that it will only manipulate the PLL registers in normal
422  * task environment, where radeon_msleep() will be called, protected
423  * by a semaphore (currently the console semaphore) so that no conflict
424  * will happen on the PLL register index.
425  *
426  * With the latest changes to the VT layer, this is guaranteed for all
427  * calls except the actual drawing/blits which aren't supposed to use
428  * the PLL registers anyway
429  *
430  * This is very important for the workarounds to work properly. The only
431  * possible exception to this rule is the call to unblank(), which may
432  * be done at irq time if an oops is in progress.
433  */
434 static inline void radeon_pll_errata_after_index(struct radeonfb_info *rinfo)
435 {
436         if (!(rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS))
437                 return;
438
439         (void)INREG(CLOCK_CNTL_DATA);
440         (void)INREG(CRTC_GEN_CNTL);
441 }
442
443 static inline void radeon_pll_errata_after_data(struct radeonfb_info *rinfo)
444 {
445         if (rinfo->errata & CHIP_ERRATA_PLL_DELAY) {
446                 /* we can't deal with posted writes here ... */
447                 _radeon_msleep(rinfo, 5);
448         }
449         if (rinfo->errata & CHIP_ERRATA_R300_CG) {
450                 u32 save, tmp;
451                 save = INREG(CLOCK_CNTL_INDEX);
452                 tmp = save & ~(0x3f | PLL_WR_EN);
453                 OUTREG(CLOCK_CNTL_INDEX, tmp);
454                 tmp = INREG(CLOCK_CNTL_DATA);
455                 OUTREG(CLOCK_CNTL_INDEX, save);
456         }
457 }
458
459 static inline u32 __INPLL(struct radeonfb_info *rinfo, u32 addr)
460 {
461         u32 data;
462
463         OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
464         radeon_pll_errata_after_index(rinfo);
465         data = INREG(CLOCK_CNTL_DATA);
466         radeon_pll_errata_after_data(rinfo);
467         return data;
468 }
469
470 static inline void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index,
471                             u32 val)
472 {
473
474         OUTREG8(CLOCK_CNTL_INDEX, (index & 0x0000003f) | 0x00000080);
475         radeon_pll_errata_after_index(rinfo);
476         OUTREG(CLOCK_CNTL_DATA, val);
477         radeon_pll_errata_after_data(rinfo);
478 }
479
480
481 static inline void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
482                              u32 val, u32 mask)
483 {
484         unsigned int tmp;
485
486         tmp  = __INPLL(rinfo, index);
487         tmp &= (mask);
488         tmp |= (val);
489         __OUTPLL(rinfo, index, tmp);
490 }
491
492
493 #define INPLL(addr)                     __INPLL(rinfo, addr)
494 #define OUTPLL(index, val)              __OUTPLL(rinfo, index, val)
495 #define OUTPLLP(index, val, mask)       __OUTPLLP(rinfo, index, val, mask)
496
497
498 #define BIOS_IN8(v)     (readb(rinfo->bios_seg + (v)))
499 #define BIOS_IN16(v)    (readb(rinfo->bios_seg + (v)) | \
500                           (readb(rinfo->bios_seg + (v) + 1) << 8))
501 #define BIOS_IN32(v)    (readb(rinfo->bios_seg + (v)) | \
502                           (readb(rinfo->bios_seg + (v) + 1) << 8) | \
503                           (readb(rinfo->bios_seg + (v) + 2) << 16) | \
504                           (readb(rinfo->bios_seg + (v) + 3) << 24))
505
506 /*
507  * Inline utilities
508  */
509 static inline int round_div(int num, int den)
510 {
511         return (num + (den / 2)) / den;
512 }
513
514 static inline int var_to_depth(const struct fb_var_screeninfo *var)
515 {
516         if (var->bits_per_pixel != 16)
517                 return var->bits_per_pixel;
518         return (var->green.length == 5) ? 15 : 16;
519 }
520
521 static inline u32 radeon_get_dstbpp(u16 depth)
522 {
523         switch (depth) {
524         case 8:
525                 return DST_8BPP;
526         case 15:
527                 return DST_15BPP;
528         case 16:
529                 return DST_16BPP;
530         case 32:
531                 return DST_32BPP;
532         default:
533                 return 0;
534         }
535 }
536
537 /*
538  * 2D Engine helper routines
539  */
540 static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
541 {
542         int i;
543
544         /* initiate flush */
545         OUTREGP(RB2D_DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
546                 ~RB2D_DC_FLUSH_ALL);
547
548         for (i=0; i < 2000000; i++) {
549                 if (!(INREG(RB2D_DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
550                         return;
551                 udelay(1);
552         }
553         printk(KERN_ERR "radeonfb: Flush Timeout !\n");
554 }
555
556
557 static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
558 {
559         int i;
560
561         for (i=0; i<2000000; i++) {
562                 if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
563                         return;
564                 udelay(1);
565         }
566         printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
567 }
568
569
570 static inline void _radeon_engine_idle(struct radeonfb_info *rinfo)
571 {
572         int i;
573
574         /* ensure FIFO is empty before waiting for idle */
575         _radeon_fifo_wait (rinfo, 64);
576
577         for (i=0; i<2000000; i++) {
578                 if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
579                         radeon_engine_flush (rinfo);
580                         return;
581                 }
582                 udelay(1);
583         }
584         printk(KERN_ERR "radeonfb: Idle Timeout !\n");
585 }
586
587
588 #define radeon_engine_idle()            _radeon_engine_idle(rinfo)
589 #define radeon_fifo_wait(entries)       _radeon_fifo_wait(rinfo,entries)
590 #define radeon_msleep(ms)               _radeon_msleep(rinfo,ms)
591
592
593 /* I2C Functions */
594 extern void radeon_create_i2c_busses(struct radeonfb_info *rinfo);
595 extern void radeon_delete_i2c_busses(struct radeonfb_info *rinfo);
596 extern int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, u8 **out_edid);
597
598 /* PM Functions */
599 extern int radeonfb_pci_suspend(struct pci_dev *pdev, pm_message_t state);
600 extern int radeonfb_pci_resume(struct pci_dev *pdev);
601 extern void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk);
602 extern void radeonfb_pm_exit(struct radeonfb_info *rinfo);
603
604 /* Monitor probe functions */
605 extern void radeon_probe_screens(struct radeonfb_info *rinfo,
606                                  const char *monitor_layout, int ignore_edid);
607 extern void radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_option);
608 extern int radeon_match_mode(struct radeonfb_info *rinfo,
609                              struct fb_var_screeninfo *dest,
610                              const struct fb_var_screeninfo *src);
611
612 /* Accel functions */
613 extern void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region);
614 extern void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
615 extern void radeonfb_imageblit(struct fb_info *p, const struct fb_image *image);
616 extern int radeonfb_sync(struct fb_info *info);
617 extern void radeonfb_engine_init (struct radeonfb_info *rinfo);
618 extern void radeonfb_engine_reset(struct radeonfb_info *rinfo);
619
620 /* Other functions */
621 extern int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch);
622 extern void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
623                                int reg_only);
624
625 #endif /* __RADEONFB_H__ */