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1 #ifndef __RADEONFB_H__
2 #define __RADEONFB_H__
3
4 #ifdef CONFIG_FB_RADEON_DEBUG
5 #define DEBUG           1
6 #endif
7
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/delay.h>
12 #include <linux/pci.h>
13 #include <linux/fb.h>
14
15
16 #ifdef CONFIG_FB_RADEON_I2C
17 #include <linux/i2c.h>
18 #include <linux/i2c-algo-bit.h>
19 #endif
20
21 #include <asm/io.h>
22
23 #if defined(CONFIG_PPC) || defined(CONFIG_SPARC)
24 #include <asm/prom.h>
25 #endif
26
27 #include <video/radeon.h>
28
29 /***************************************************************
30  * Most of the definitions here are adapted right from XFree86 *
31  ***************************************************************/
32
33
34 /*
35  * Chip families. Must fit in the low 16 bits of a long word
36  */
37 enum radeon_family {
38         CHIP_FAMILY_UNKNOW,
39         CHIP_FAMILY_LEGACY,
40         CHIP_FAMILY_RADEON,
41         CHIP_FAMILY_RV100,
42         CHIP_FAMILY_RS100,    /* U1 (IGP320M) or A3 (IGP320)*/
43         CHIP_FAMILY_RV200,
44         CHIP_FAMILY_RS200,    /* U2 (IGP330M/340M/350M) or A4 (IGP330/340/345/350),
45                                  RS250 (IGP 7000) */
46         CHIP_FAMILY_R200,
47         CHIP_FAMILY_RV250,
48         CHIP_FAMILY_RS300,    /* Radeon 9000 IGP */
49         CHIP_FAMILY_RV280,
50         CHIP_FAMILY_R300,
51         CHIP_FAMILY_R350,
52         CHIP_FAMILY_RV350,
53         CHIP_FAMILY_RV380,    /* RV370/RV380/M22/M24 */
54         CHIP_FAMILY_R420,     /* R420/R423/M18 */
55         CHIP_FAMILY_RC410,
56         CHIP_FAMILY_RS400,
57         CHIP_FAMILY_RS480,
58         CHIP_FAMILY_LAST,
59 };
60
61 #define IS_RV100_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_RV100)  || \
62                                  ((rinfo)->family == CHIP_FAMILY_RV200)  || \
63                                  ((rinfo)->family == CHIP_FAMILY_RS100)  || \
64                                  ((rinfo)->family == CHIP_FAMILY_RS200)  || \
65                                  ((rinfo)->family == CHIP_FAMILY_RV250)  || \
66                                  ((rinfo)->family == CHIP_FAMILY_RV280)  || \
67                                  ((rinfo)->family == CHIP_FAMILY_RS300))
68
69
70 #define IS_R300_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_R300)  || \
71                                 ((rinfo)->family == CHIP_FAMILY_RV350) || \
72                                 ((rinfo)->family == CHIP_FAMILY_R350)  || \
73                                 ((rinfo)->family == CHIP_FAMILY_RV380) || \
74                                 ((rinfo)->family == CHIP_FAMILY_R420)  || \
75                                ((rinfo)->family == CHIP_FAMILY_RC410) || \
76                                ((rinfo)->family == CHIP_FAMILY_RS480))
77
78 /*
79  * Chip flags
80  */
81 enum radeon_chip_flags {
82         CHIP_FAMILY_MASK        = 0x0000ffffUL,
83         CHIP_FLAGS_MASK         = 0xffff0000UL,
84         CHIP_IS_MOBILITY        = 0x00010000UL,
85         CHIP_IS_IGP             = 0x00020000UL,
86         CHIP_HAS_CRTC2          = 0x00040000UL, 
87 };
88
89 /*
90  * Errata workarounds
91  */
92 enum radeon_errata {
93         CHIP_ERRATA_R300_CG             = 0x00000001,
94         CHIP_ERRATA_PLL_DUMMYREADS      = 0x00000002,
95         CHIP_ERRATA_PLL_DELAY           = 0x00000004,
96 };
97
98
99 /*
100  * Monitor types
101  */
102 enum radeon_montype {
103         MT_NONE = 0,
104         MT_CRT,         /* CRT */
105         MT_LCD,         /* LCD */
106         MT_DFP,         /* DVI */
107         MT_CTV,         /* composite TV */
108         MT_STV          /* S-Video out */
109 };
110
111 /*
112  * DDC i2c ports
113  */
114 enum ddc_type {
115         ddc_none,
116         ddc_monid,
117         ddc_dvi,
118         ddc_vga,
119         ddc_crt2,
120 };
121
122 /*
123  * Connector types
124  */
125 enum conn_type {
126         conn_none,
127         conn_proprietary,
128         conn_crt,
129         conn_DVI_I,
130         conn_DVI_D,
131 };
132
133
134 /*
135  * PLL infos
136  */
137 struct pll_info {
138         int ppll_max;
139         int ppll_min;
140         int sclk, mclk;
141         int ref_div;
142         int ref_clk;
143 };
144
145
146 /*
147  * This structure contains the various registers manipulated by this
148  * driver for setting or restoring a mode. It's mostly copied from
149  * XFree's RADEONSaveRec structure. A few chip settings might still be
150  * tweaked without beeing reflected or saved in these registers though
151  */
152 struct radeon_regs {
153         /* Common registers */
154         u32             ovr_clr;
155         u32             ovr_wid_left_right;
156         u32             ovr_wid_top_bottom;
157         u32             ov0_scale_cntl;
158         u32             mpp_tb_config;
159         u32             mpp_gp_config;
160         u32             subpic_cntl;
161         u32             viph_control;
162         u32             i2c_cntl_1;
163         u32             gen_int_cntl;
164         u32             cap0_trig_cntl;
165         u32             cap1_trig_cntl;
166         u32             bus_cntl;
167         u32             surface_cntl;
168         u32             bios_5_scratch;
169
170         /* Other registers to save for VT switches or driver load/unload */
171         u32             dp_datatype;
172         u32             rbbm_soft_reset;
173         u32             clock_cntl_index;
174         u32             amcgpio_en_reg;
175         u32             amcgpio_mask;
176
177         /* Surface/tiling registers */
178         u32             surf_lower_bound[8];
179         u32             surf_upper_bound[8];
180         u32             surf_info[8];
181
182         /* CRTC registers */
183         u32             crtc_gen_cntl;
184         u32             crtc_ext_cntl;
185         u32             dac_cntl;
186         u32             crtc_h_total_disp;
187         u32             crtc_h_sync_strt_wid;
188         u32             crtc_v_total_disp;
189         u32             crtc_v_sync_strt_wid;
190         u32             crtc_offset;
191         u32             crtc_offset_cntl;
192         u32             crtc_pitch;
193         u32             disp_merge_cntl;
194         u32             grph_buffer_cntl;
195         u32             crtc_more_cntl;
196
197         /* CRTC2 registers */
198         u32             crtc2_gen_cntl;
199         u32             dac2_cntl;
200         u32             disp_output_cntl;
201         u32             disp_hw_debug;
202         u32             disp2_merge_cntl;
203         u32             grph2_buffer_cntl;
204         u32             crtc2_h_total_disp;
205         u32             crtc2_h_sync_strt_wid;
206         u32             crtc2_v_total_disp;
207         u32             crtc2_v_sync_strt_wid;
208         u32             crtc2_offset;
209         u32             crtc2_offset_cntl;
210         u32             crtc2_pitch;
211
212         /* Flat panel regs */
213         u32             fp_crtc_h_total_disp;
214         u32             fp_crtc_v_total_disp;
215         u32             fp_gen_cntl;
216         u32             fp2_gen_cntl;
217         u32             fp_h_sync_strt_wid;
218         u32             fp2_h_sync_strt_wid;
219         u32             fp_horz_stretch;
220         u32             fp_panel_cntl;
221         u32             fp_v_sync_strt_wid;
222         u32             fp2_v_sync_strt_wid;
223         u32             fp_vert_stretch;
224         u32             lvds_gen_cntl;
225         u32             lvds_pll_cntl;
226         u32             tmds_crc;
227         u32             tmds_transmitter_cntl;
228
229         /* Computed values for PLL */
230         u32             dot_clock_freq;
231         int             feedback_div;
232         int             post_div;       
233
234         /* PLL registers */
235         u32             ppll_div_3;
236         u32             ppll_ref_div;
237         u32             vclk_ecp_cntl;
238         u32             clk_cntl_index;
239
240         /* Computed values for PLL2 */
241         u32             dot_clock_freq_2;
242         int             feedback_div_2;
243         int             post_div_2;
244
245         /* PLL2 registers */
246         u32             p2pll_ref_div;
247         u32             p2pll_div_0;
248         u32             htotal_cntl2;
249
250         /* Palette */
251         int             palette_valid;
252 };
253
254 struct panel_info {
255         int xres, yres;
256         int valid;
257         int clock;
258         int hOver_plus, hSync_width, hblank;
259         int vOver_plus, vSync_width, vblank;
260         int hAct_high, vAct_high, interlaced;
261         int pwr_delay;
262         int use_bios_dividers;
263         int ref_divider;
264         int post_divider;
265         int fbk_divider;
266 };
267
268 struct radeonfb_info;
269
270 #ifdef CONFIG_FB_RADEON_I2C
271 struct radeon_i2c_chan {
272         struct radeonfb_info            *rinfo;
273         u32                             ddc_reg;
274         struct i2c_adapter              adapter;
275         struct i2c_algo_bit_data        algo;
276 };
277 #endif
278
279 enum radeon_pm_mode {
280         radeon_pm_none  = 0,            /* Nothing supported */
281         radeon_pm_d2    = 0x00000001,   /* Can do D2 state */
282         radeon_pm_off   = 0x00000002,   /* Can resume from D3 cold */
283 };
284
285 typedef void (*reinit_function_ptr)(struct radeonfb_info *rinfo);
286
287 struct radeonfb_info {
288         struct fb_info          *info;
289
290         struct radeon_regs      state;
291         struct radeon_regs      init_state;
292
293         char                    name[50];
294
295         unsigned long           mmio_base_phys;
296         unsigned long           fb_base_phys;
297
298         void __iomem            *mmio_base;
299         void __iomem            *fb_base;
300
301         unsigned long           fb_local_base;
302
303         struct pci_dev          *pdev;
304 #if defined(CONFIG_PPC) || defined(CONFIG_SPARC)
305         struct device_node      *of_node;
306 #endif
307
308         void __iomem            *bios_seg;
309         int                     fp_bios_start;
310
311         u32                     pseudo_palette[16];
312         struct { u8 red, green, blue, pad; }
313                                 palette[256];
314
315         int                     chipset;
316         u8                      family;
317         u8                      rev;
318         unsigned int            errata;
319         unsigned long           video_ram;
320         unsigned long           mapped_vram;
321         int                     vram_width;
322         int                     vram_ddr;
323
324         int                     pitch, bpp, depth;
325
326         int                     has_CRTC2;
327         int                     is_mobility;
328         int                     is_IGP;
329         int                     reversed_DAC;
330         int                     reversed_TMDS;
331         struct panel_info       panel_info;
332         int                     mon1_type;
333         u8                      *mon1_EDID;
334         struct fb_videomode     *mon1_modedb;
335         int                     mon1_dbsize;
336         int                     mon2_type;
337         u8                      *mon2_EDID;
338
339         u32                     dp_gui_master_cntl;
340
341         struct pll_info         pll;
342
343         int                     wc_cookie;
344
345         u32                     save_regs[100];
346         int                     asleep;
347         int                     lock_blank;
348         int                     dynclk;
349         int                     no_schedule;
350         enum radeon_pm_mode     pm_mode;
351         reinit_function_ptr     reinit_func;
352
353         /* Lock on register access */
354         spinlock_t              reg_lock;
355
356         /* Timer used for delayed LVDS operations */
357         struct timer_list       lvds_timer;
358         u32                     pending_lvds_gen_cntl;
359
360 #ifdef CONFIG_FB_RADEON_I2C
361         struct radeon_i2c_chan  i2c[4];
362 #endif
363 };
364
365
366 #define PRIMARY_MONITOR(rinfo)  (rinfo->mon1_type)
367
368
369 /*
370  * IO macros
371  */
372
373 /* Note about this function: we have some rare cases where we must not schedule,
374  * this typically happen with our special "wake up early" hook which allows us to
375  * wake up the graphic chip (and thus get the console back) before everything else
376  * on some machines that support that mechanism. At this point, interrupts are off
377  * and scheduling is not permitted
378  */
379 static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
380 {
381         if (rinfo->no_schedule || oops_in_progress)
382                 mdelay(ms);
383         else
384                 msleep(ms);
385 }
386
387
388 #define INREG8(addr)            readb((rinfo->mmio_base)+addr)
389 #define OUTREG8(addr,val)       writeb(val, (rinfo->mmio_base)+addr)
390 #define INREG16(addr)           readw((rinfo->mmio_base)+addr)
391 #define OUTREG16(addr,val)      writew(val, (rinfo->mmio_base)+addr)
392 #define INREG(addr)             readl((rinfo->mmio_base)+addr)
393 #define OUTREG(addr,val)        writel(val, (rinfo->mmio_base)+addr)
394
395 static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
396                        u32 val, u32 mask)
397 {
398         unsigned long flags;
399         unsigned int tmp;
400
401         spin_lock_irqsave(&rinfo->reg_lock, flags);
402         tmp = INREG(addr);
403         tmp &= (mask);
404         tmp |= (val);
405         OUTREG(addr, tmp);
406         spin_unlock_irqrestore(&rinfo->reg_lock, flags);
407 }
408
409 #define OUTREGP(addr,val,mask)  _OUTREGP(rinfo, addr, val,mask)
410
411 /*
412  * Note about PLL register accesses:
413  *
414  * I have removed the spinlock on them on purpose. The driver now
415  * expects that it will only manipulate the PLL registers in normal
416  * task environment, where radeon_msleep() will be called, protected
417  * by a semaphore (currently the console semaphore) so that no conflict
418  * will happen on the PLL register index.
419  *
420  * With the latest changes to the VT layer, this is guaranteed for all
421  * calls except the actual drawing/blits which aren't supposed to use
422  * the PLL registers anyway
423  *
424  * This is very important for the workarounds to work properly. The only
425  * possible exception to this rule is the call to unblank(), which may
426  * be done at irq time if an oops is in progress.
427  */
428 static inline void radeon_pll_errata_after_index(struct radeonfb_info *rinfo)
429 {
430         if (!(rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS))
431                 return;
432
433         (void)INREG(CLOCK_CNTL_DATA);
434         (void)INREG(CRTC_GEN_CNTL);
435 }
436
437 static inline void radeon_pll_errata_after_data(struct radeonfb_info *rinfo)
438 {
439         if (rinfo->errata & CHIP_ERRATA_PLL_DELAY) {
440                 /* we can't deal with posted writes here ... */
441                 _radeon_msleep(rinfo, 5);
442         }
443         if (rinfo->errata & CHIP_ERRATA_R300_CG) {
444                 u32 save, tmp;
445                 save = INREG(CLOCK_CNTL_INDEX);
446                 tmp = save & ~(0x3f | PLL_WR_EN);
447                 OUTREG(CLOCK_CNTL_INDEX, tmp);
448                 tmp = INREG(CLOCK_CNTL_DATA);
449                 OUTREG(CLOCK_CNTL_INDEX, save);
450         }
451 }
452
453 static inline u32 __INPLL(struct radeonfb_info *rinfo, u32 addr)
454 {
455         u32 data;
456
457         OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
458         radeon_pll_errata_after_index(rinfo);
459         data = INREG(CLOCK_CNTL_DATA);
460         radeon_pll_errata_after_data(rinfo);
461         return data;
462 }
463
464 static inline void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index,
465                             u32 val)
466 {
467
468         OUTREG8(CLOCK_CNTL_INDEX, (index & 0x0000003f) | 0x00000080);
469         radeon_pll_errata_after_index(rinfo);
470         OUTREG(CLOCK_CNTL_DATA, val);
471         radeon_pll_errata_after_data(rinfo);
472 }
473
474
475 static inline void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
476                              u32 val, u32 mask)
477 {
478         unsigned int tmp;
479
480         tmp  = __INPLL(rinfo, index);
481         tmp &= (mask);
482         tmp |= (val);
483         __OUTPLL(rinfo, index, tmp);
484 }
485
486
487 #define INPLL(addr)                     __INPLL(rinfo, addr)
488 #define OUTPLL(index, val)              __OUTPLL(rinfo, index, val)
489 #define OUTPLLP(index, val, mask)       __OUTPLLP(rinfo, index, val, mask)
490
491
492 #define BIOS_IN8(v)     (readb(rinfo->bios_seg + (v)))
493 #define BIOS_IN16(v)    (readb(rinfo->bios_seg + (v)) | \
494                           (readb(rinfo->bios_seg + (v) + 1) << 8))
495 #define BIOS_IN32(v)    (readb(rinfo->bios_seg + (v)) | \
496                           (readb(rinfo->bios_seg + (v) + 1) << 8) | \
497                           (readb(rinfo->bios_seg + (v) + 2) << 16) | \
498                           (readb(rinfo->bios_seg + (v) + 3) << 24))
499
500 /*
501  * Inline utilities
502  */
503 static inline int round_div(int num, int den)
504 {
505         return (num + (den / 2)) / den;
506 }
507
508 static inline int var_to_depth(const struct fb_var_screeninfo *var)
509 {
510         if (var->bits_per_pixel != 16)
511                 return var->bits_per_pixel;
512         return (var->green.length == 5) ? 15 : 16;
513 }
514
515 static inline u32 radeon_get_dstbpp(u16 depth)
516 {
517         switch (depth) {
518         case 8:
519                 return DST_8BPP;
520         case 15:
521                 return DST_15BPP;
522         case 16:
523                 return DST_16BPP;
524         case 32:
525                 return DST_32BPP;
526         default:
527                 return 0;
528         }
529 }
530
531 /*
532  * 2D Engine helper routines
533  */
534
535 static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
536 {
537         int i;
538
539         for (i=0; i<2000000; i++) {
540                 if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
541                         return;
542                 udelay(1);
543         }
544         printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
545 }
546
547 static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
548 {
549         int i;
550
551         /* Initiate flush */
552         OUTREGP(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
553                 ~RB2D_DC_FLUSH_ALL);
554
555         /* Ensure FIFO is empty, ie, make sure the flush commands
556          * has reached the cache
557          */
558         _radeon_fifo_wait (rinfo, 64);
559
560         /* Wait for the flush to complete */
561         for (i=0; i < 2000000; i++) {
562                 if (!(INREG(DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
563                         return;
564                 udelay(1);
565         }
566         printk(KERN_ERR "radeonfb: Flush 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, int ignore_devlist, int force_sleep);
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 /* Backlight functions */
626 #ifdef CONFIG_FB_RADEON_BACKLIGHT
627 extern void radeonfb_bl_init(struct radeonfb_info *rinfo);
628 extern void radeonfb_bl_exit(struct radeonfb_info *rinfo);
629 #else
630 static inline void radeonfb_bl_init(struct radeonfb_info *rinfo) {}
631 static inline void radeonfb_bl_exit(struct radeonfb_info *rinfo) {}
632 #endif
633
634 #endif /* __RADEONFB_H__ */