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10#define DSS_SUBSYS_NAME "DSS"
11
12#include <linux/debugfs.h>
13#include <linux/dma-mapping.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/io.h>
17#include <linux/export.h>
18#include <linux/err.h>
19#include <linux/delay.h>
20#include <linux/seq_file.h>
21#include <linux/clk.h>
22#include <linux/pinctrl/consumer.h>
23#include <linux/platform_device.h>
24#include <linux/pm_runtime.h>
25#include <linux/gfp.h>
26#include <linux/sizes.h>
27#include <linux/mfd/syscon.h>
28#include <linux/regmap.h>
29#include <linux/of.h>
30#include <linux/of_device.h>
31#include <linux/of_graph.h>
32#include <linux/regulator/consumer.h>
33#include <linux/suspend.h>
34#include <linux/component.h>
35#include <linux/sys_soc.h>
36
37#include "omapdss.h"
38#include "dss.h"
39
40struct dss_reg {
41 u16 idx;
42};
43
44#define DSS_REG(idx) ((const struct dss_reg) { idx })
45
46#define DSS_REVISION DSS_REG(0x0000)
47#define DSS_SYSCONFIG DSS_REG(0x0010)
48#define DSS_SYSSTATUS DSS_REG(0x0014)
49#define DSS_CONTROL DSS_REG(0x0040)
50#define DSS_SDI_CONTROL DSS_REG(0x0044)
51#define DSS_PLL_CONTROL DSS_REG(0x0048)
52#define DSS_SDI_STATUS DSS_REG(0x005C)
53
54#define REG_GET(dss, idx, start, end) \
55 FLD_GET(dss_read_reg(dss, idx), start, end)
56
57#define REG_FLD_MOD(dss, idx, val, start, end) \
58 dss_write_reg(dss, idx, \
59 FLD_MOD(dss_read_reg(dss, idx), val, start, end))
60
61struct dss_ops {
62 int (*dpi_select_source)(struct dss_device *dss, int port,
63 enum omap_channel channel);
64 int (*select_lcd_source)(struct dss_device *dss,
65 enum omap_channel channel,
66 enum dss_clk_source clk_src);
67};
68
69struct dss_features {
70 enum dss_model model;
71 u8 fck_div_max;
72 unsigned int fck_freq_max;
73 u8 dss_fck_multiplier;
74 const char *parent_clk_name;
75 const enum omap_display_type *ports;
76 int num_ports;
77 const enum omap_dss_output_id *outputs;
78 const struct dss_ops *ops;
79 struct dss_reg_field dispc_clk_switch;
80 bool has_lcd_clk_src;
81};
82
83static const char * const dss_generic_clk_source_names[] = {
84 [DSS_CLK_SRC_FCK] = "FCK",
85 [DSS_CLK_SRC_PLL1_1] = "PLL1:1",
86 [DSS_CLK_SRC_PLL1_2] = "PLL1:2",
87 [DSS_CLK_SRC_PLL1_3] = "PLL1:3",
88 [DSS_CLK_SRC_PLL2_1] = "PLL2:1",
89 [DSS_CLK_SRC_PLL2_2] = "PLL2:2",
90 [DSS_CLK_SRC_PLL2_3] = "PLL2:3",
91 [DSS_CLK_SRC_HDMI_PLL] = "HDMI PLL",
92};
93
94static inline void dss_write_reg(struct dss_device *dss,
95 const struct dss_reg idx, u32 val)
96{
97 __raw_writel(val, dss->base + idx.idx);
98}
99
100static inline u32 dss_read_reg(struct dss_device *dss, const struct dss_reg idx)
101{
102 return __raw_readl(dss->base + idx.idx);
103}
104
105#define SR(dss, reg) \
106 dss->ctx[(DSS_##reg).idx / sizeof(u32)] = dss_read_reg(dss, DSS_##reg)
107#define RR(dss, reg) \
108 dss_write_reg(dss, DSS_##reg, dss->ctx[(DSS_##reg).idx / sizeof(u32)])
109
110static void dss_save_context(struct dss_device *dss)
111{
112 DSSDBG("dss_save_context\n");
113
114 SR(dss, CONTROL);
115
116 if (dss->feat->outputs[OMAP_DSS_CHANNEL_LCD] & OMAP_DSS_OUTPUT_SDI) {
117 SR(dss, SDI_CONTROL);
118 SR(dss, PLL_CONTROL);
119 }
120
121 dss->ctx_valid = true;
122
123 DSSDBG("context saved\n");
124}
125
126static void dss_restore_context(struct dss_device *dss)
127{
128 DSSDBG("dss_restore_context\n");
129
130 if (!dss->ctx_valid)
131 return;
132
133 RR(dss, CONTROL);
134
135 if (dss->feat->outputs[OMAP_DSS_CHANNEL_LCD] & OMAP_DSS_OUTPUT_SDI) {
136 RR(dss, SDI_CONTROL);
137 RR(dss, PLL_CONTROL);
138 }
139
140 DSSDBG("context restored\n");
141}
142
143#undef SR
144#undef RR
145
146void dss_ctrl_pll_enable(struct dss_pll *pll, bool enable)
147{
148 unsigned int shift;
149 unsigned int val;
150
151 if (!pll->dss->syscon_pll_ctrl)
152 return;
153
154 val = !enable;
155
156 switch (pll->id) {
157 case DSS_PLL_VIDEO1:
158 shift = 0;
159 break;
160 case DSS_PLL_VIDEO2:
161 shift = 1;
162 break;
163 case DSS_PLL_HDMI:
164 shift = 2;
165 break;
166 default:
167 DSSERR("illegal DSS PLL ID %d\n", pll->id);
168 return;
169 }
170
171 regmap_update_bits(pll->dss->syscon_pll_ctrl,
172 pll->dss->syscon_pll_ctrl_offset,
173 1 << shift, val << shift);
174}
175
176static int dss_ctrl_pll_set_control_mux(struct dss_device *dss,
177 enum dss_clk_source clk_src,
178 enum omap_channel channel)
179{
180 unsigned int shift, val;
181
182 if (!dss->syscon_pll_ctrl)
183 return -EINVAL;
184
185 switch (channel) {
186 case OMAP_DSS_CHANNEL_LCD:
187 shift = 3;
188
189 switch (clk_src) {
190 case DSS_CLK_SRC_PLL1_1:
191 val = 0; break;
192 case DSS_CLK_SRC_HDMI_PLL:
193 val = 1; break;
194 default:
195 DSSERR("error in PLL mux config for LCD\n");
196 return -EINVAL;
197 }
198
199 break;
200 case OMAP_DSS_CHANNEL_LCD2:
201 shift = 5;
202
203 switch (clk_src) {
204 case DSS_CLK_SRC_PLL1_3:
205 val = 0; break;
206 case DSS_CLK_SRC_PLL2_3:
207 val = 1; break;
208 case DSS_CLK_SRC_HDMI_PLL:
209 val = 2; break;
210 default:
211 DSSERR("error in PLL mux config for LCD2\n");
212 return -EINVAL;
213 }
214
215 break;
216 case OMAP_DSS_CHANNEL_LCD3:
217 shift = 7;
218
219 switch (clk_src) {
220 case DSS_CLK_SRC_PLL2_1:
221 val = 0; break;
222 case DSS_CLK_SRC_PLL1_3:
223 val = 1; break;
224 case DSS_CLK_SRC_HDMI_PLL:
225 val = 2; break;
226 default:
227 DSSERR("error in PLL mux config for LCD3\n");
228 return -EINVAL;
229 }
230
231 break;
232 default:
233 DSSERR("error in PLL mux config\n");
234 return -EINVAL;
235 }
236
237 regmap_update_bits(dss->syscon_pll_ctrl, dss->syscon_pll_ctrl_offset,
238 0x3 << shift, val << shift);
239
240 return 0;
241}
242
243void dss_sdi_init(struct dss_device *dss, int datapairs)
244{
245 u32 l;
246
247 BUG_ON(datapairs > 3 || datapairs < 1);
248
249 l = dss_read_reg(dss, DSS_SDI_CONTROL);
250 l = FLD_MOD(l, 0xf, 19, 15);
251 l = FLD_MOD(l, datapairs-1, 3, 2);
252 l = FLD_MOD(l, 2, 1, 0);
253 dss_write_reg(dss, DSS_SDI_CONTROL, l);
254
255 l = dss_read_reg(dss, DSS_PLL_CONTROL);
256 l = FLD_MOD(l, 0x7, 25, 22);
257 l = FLD_MOD(l, 0xb, 16, 11);
258 l = FLD_MOD(l, 0xb4, 10, 1);
259 dss_write_reg(dss, DSS_PLL_CONTROL, l);
260}
261
262int dss_sdi_enable(struct dss_device *dss)
263{
264 unsigned long timeout;
265
266 dispc_pck_free_enable(dss->dispc, 1);
267
268
269 REG_FLD_MOD(dss, DSS_PLL_CONTROL, 1, 18, 18);
270 udelay(1);
271
272
273 REG_FLD_MOD(dss, DSS_PLL_CONTROL, 1, 28, 28);
274
275
276 timeout = jiffies + msecs_to_jiffies(500);
277 while (dss_read_reg(dss, DSS_SDI_STATUS) & (1 << 6)) {
278 if (time_after_eq(jiffies, timeout)) {
279 DSSERR("PLL lock request timed out\n");
280 goto err1;
281 }
282 }
283
284
285 REG_FLD_MOD(dss, DSS_PLL_CONTROL, 0, 28, 28);
286
287
288 timeout = jiffies + msecs_to_jiffies(500);
289 while (!(dss_read_reg(dss, DSS_SDI_STATUS) & (1 << 5))) {
290 if (time_after_eq(jiffies, timeout)) {
291 DSSERR("PLL lock timed out\n");
292 goto err1;
293 }
294 }
295
296 dispc_lcd_enable_signal(dss->dispc, 1);
297
298
299 timeout = jiffies + msecs_to_jiffies(500);
300 while (!(dss_read_reg(dss, DSS_SDI_STATUS) & (1 << 2))) {
301 if (time_after_eq(jiffies, timeout)) {
302 DSSERR("SDI reset timed out\n");
303 goto err2;
304 }
305 }
306
307 return 0;
308
309 err2:
310 dispc_lcd_enable_signal(dss->dispc, 0);
311 err1:
312
313 REG_FLD_MOD(dss, DSS_PLL_CONTROL, 0, 18, 18);
314
315 dispc_pck_free_enable(dss->dispc, 0);
316
317 return -ETIMEDOUT;
318}
319
320void dss_sdi_disable(struct dss_device *dss)
321{
322 dispc_lcd_enable_signal(dss->dispc, 0);
323
324 dispc_pck_free_enable(dss->dispc, 0);
325
326
327 REG_FLD_MOD(dss, DSS_PLL_CONTROL, 0, 18, 18);
328}
329
330const char *dss_get_clk_source_name(enum dss_clk_source clk_src)
331{
332 return dss_generic_clk_source_names[clk_src];
333}
334
335static void dss_dump_clocks(struct dss_device *dss, struct seq_file *s)
336{
337 const char *fclk_name;
338 unsigned long fclk_rate;
339
340 if (dss_runtime_get(dss))
341 return;
342
343 seq_printf(s, "- DSS -\n");
344
345 fclk_name = dss_get_clk_source_name(DSS_CLK_SRC_FCK);
346 fclk_rate = clk_get_rate(dss->dss_clk);
347
348 seq_printf(s, "%s = %lu\n",
349 fclk_name,
350 fclk_rate);
351
352 dss_runtime_put(dss);
353}
354
355static int dss_dump_regs(struct seq_file *s, void *p)
356{
357 struct dss_device *dss = s->private;
358
359#define DUMPREG(dss, r) seq_printf(s, "%-35s %08x\n", #r, dss_read_reg(dss, r))
360
361 if (dss_runtime_get(dss))
362 return 0;
363
364 DUMPREG(dss, DSS_REVISION);
365 DUMPREG(dss, DSS_SYSCONFIG);
366 DUMPREG(dss, DSS_SYSSTATUS);
367 DUMPREG(dss, DSS_CONTROL);
368
369 if (dss->feat->outputs[OMAP_DSS_CHANNEL_LCD] & OMAP_DSS_OUTPUT_SDI) {
370 DUMPREG(dss, DSS_SDI_CONTROL);
371 DUMPREG(dss, DSS_PLL_CONTROL);
372 DUMPREG(dss, DSS_SDI_STATUS);
373 }
374
375 dss_runtime_put(dss);
376#undef DUMPREG
377 return 0;
378}
379
380static int dss_debug_dump_clocks(struct seq_file *s, void *p)
381{
382 struct dss_device *dss = s->private;
383
384 dss_dump_clocks(dss, s);
385 dispc_dump_clocks(dss->dispc, s);
386 return 0;
387}
388
389static int dss_get_channel_index(enum omap_channel channel)
390{
391 switch (channel) {
392 case OMAP_DSS_CHANNEL_LCD:
393 return 0;
394 case OMAP_DSS_CHANNEL_LCD2:
395 return 1;
396 case OMAP_DSS_CHANNEL_LCD3:
397 return 2;
398 default:
399 WARN_ON(1);
400 return 0;
401 }
402}
403
404static void dss_select_dispc_clk_source(struct dss_device *dss,
405 enum dss_clk_source clk_src)
406{
407 int b;
408
409
410
411
412
413 if (WARN_ON(dss->feat->has_lcd_clk_src && clk_src != DSS_CLK_SRC_FCK))
414 return;
415
416 switch (clk_src) {
417 case DSS_CLK_SRC_FCK:
418 b = 0;
419 break;
420 case DSS_CLK_SRC_PLL1_1:
421 b = 1;
422 break;
423 case DSS_CLK_SRC_PLL2_1:
424 b = 2;
425 break;
426 default:
427 BUG();
428 return;
429 }
430
431 REG_FLD_MOD(dss, DSS_CONTROL, b,
432 dss->feat->dispc_clk_switch.start,
433 dss->feat->dispc_clk_switch.end);
434
435 dss->dispc_clk_source = clk_src;
436}
437
438void dss_select_dsi_clk_source(struct dss_device *dss, int dsi_module,
439 enum dss_clk_source clk_src)
440{
441 int b, pos;
442
443 switch (clk_src) {
444 case DSS_CLK_SRC_FCK:
445 b = 0;
446 break;
447 case DSS_CLK_SRC_PLL1_2:
448 BUG_ON(dsi_module != 0);
449 b = 1;
450 break;
451 case DSS_CLK_SRC_PLL2_2:
452 BUG_ON(dsi_module != 1);
453 b = 1;
454 break;
455 default:
456 BUG();
457 return;
458 }
459
460 pos = dsi_module == 0 ? 1 : 10;
461 REG_FLD_MOD(dss, DSS_CONTROL, b, pos, pos);
462
463 dss->dsi_clk_source[dsi_module] = clk_src;
464}
465
466static int dss_lcd_clk_mux_dra7(struct dss_device *dss,
467 enum omap_channel channel,
468 enum dss_clk_source clk_src)
469{
470 const u8 ctrl_bits[] = {
471 [OMAP_DSS_CHANNEL_LCD] = 0,
472 [OMAP_DSS_CHANNEL_LCD2] = 12,
473 [OMAP_DSS_CHANNEL_LCD3] = 19,
474 };
475
476 u8 ctrl_bit = ctrl_bits[channel];
477 int r;
478
479 if (clk_src == DSS_CLK_SRC_FCK) {
480
481 REG_FLD_MOD(dss, DSS_CONTROL, 0, ctrl_bit, ctrl_bit);
482 return -EINVAL;
483 }
484
485 r = dss_ctrl_pll_set_control_mux(dss, clk_src, channel);
486 if (r)
487 return r;
488
489 REG_FLD_MOD(dss, DSS_CONTROL, 1, ctrl_bit, ctrl_bit);
490
491 return 0;
492}
493
494static int dss_lcd_clk_mux_omap5(struct dss_device *dss,
495 enum omap_channel channel,
496 enum dss_clk_source clk_src)
497{
498 const u8 ctrl_bits[] = {
499 [OMAP_DSS_CHANNEL_LCD] = 0,
500 [OMAP_DSS_CHANNEL_LCD2] = 12,
501 [OMAP_DSS_CHANNEL_LCD3] = 19,
502 };
503 const enum dss_clk_source allowed_plls[] = {
504 [OMAP_DSS_CHANNEL_LCD] = DSS_CLK_SRC_PLL1_1,
505 [OMAP_DSS_CHANNEL_LCD2] = DSS_CLK_SRC_FCK,
506 [OMAP_DSS_CHANNEL_LCD3] = DSS_CLK_SRC_PLL2_1,
507 };
508
509 u8 ctrl_bit = ctrl_bits[channel];
510
511 if (clk_src == DSS_CLK_SRC_FCK) {
512
513 REG_FLD_MOD(dss, DSS_CONTROL, 0, ctrl_bit, ctrl_bit);
514 return -EINVAL;
515 }
516
517 if (WARN_ON(allowed_plls[channel] != clk_src))
518 return -EINVAL;
519
520 REG_FLD_MOD(dss, DSS_CONTROL, 1, ctrl_bit, ctrl_bit);
521
522 return 0;
523}
524
525static int dss_lcd_clk_mux_omap4(struct dss_device *dss,
526 enum omap_channel channel,
527 enum dss_clk_source clk_src)
528{
529 const u8 ctrl_bits[] = {
530 [OMAP_DSS_CHANNEL_LCD] = 0,
531 [OMAP_DSS_CHANNEL_LCD2] = 12,
532 };
533 const enum dss_clk_source allowed_plls[] = {
534 [OMAP_DSS_CHANNEL_LCD] = DSS_CLK_SRC_PLL1_1,
535 [OMAP_DSS_CHANNEL_LCD2] = DSS_CLK_SRC_PLL2_1,
536 };
537
538 u8 ctrl_bit = ctrl_bits[channel];
539
540 if (clk_src == DSS_CLK_SRC_FCK) {
541
542 REG_FLD_MOD(dss, DSS_CONTROL, 0, ctrl_bit, ctrl_bit);
543 return 0;
544 }
545
546 if (WARN_ON(allowed_plls[channel] != clk_src))
547 return -EINVAL;
548
549 REG_FLD_MOD(dss, DSS_CONTROL, 1, ctrl_bit, ctrl_bit);
550
551 return 0;
552}
553
554void dss_select_lcd_clk_source(struct dss_device *dss,
555 enum omap_channel channel,
556 enum dss_clk_source clk_src)
557{
558 int idx = dss_get_channel_index(channel);
559 int r;
560
561 if (!dss->feat->has_lcd_clk_src) {
562 dss_select_dispc_clk_source(dss, clk_src);
563 dss->lcd_clk_source[idx] = clk_src;
564 return;
565 }
566
567 r = dss->feat->ops->select_lcd_source(dss, channel, clk_src);
568 if (r)
569 return;
570
571 dss->lcd_clk_source[idx] = clk_src;
572}
573
574enum dss_clk_source dss_get_dispc_clk_source(struct dss_device *dss)
575{
576 return dss->dispc_clk_source;
577}
578
579enum dss_clk_source dss_get_dsi_clk_source(struct dss_device *dss,
580 int dsi_module)
581{
582 return dss->dsi_clk_source[dsi_module];
583}
584
585enum dss_clk_source dss_get_lcd_clk_source(struct dss_device *dss,
586 enum omap_channel channel)
587{
588 if (dss->feat->has_lcd_clk_src) {
589 int idx = dss_get_channel_index(channel);
590 return dss->lcd_clk_source[idx];
591 } else {
592
593
594 return dss->dispc_clk_source;
595 }
596}
597
598bool dss_div_calc(struct dss_device *dss, unsigned long pck,
599 unsigned long fck_min, dss_div_calc_func func, void *data)
600{
601 int fckd, fckd_start, fckd_stop;
602 unsigned long fck;
603 unsigned long fck_hw_max;
604 unsigned long fckd_hw_max;
605 unsigned long prate;
606 unsigned int m;
607
608 fck_hw_max = dss->feat->fck_freq_max;
609
610 if (dss->parent_clk == NULL) {
611 unsigned int pckd;
612
613 pckd = fck_hw_max / pck;
614
615 fck = pck * pckd;
616
617 fck = clk_round_rate(dss->dss_clk, fck);
618
619 return func(fck, data);
620 }
621
622 fckd_hw_max = dss->feat->fck_div_max;
623
624 m = dss->feat->dss_fck_multiplier;
625 prate = clk_get_rate(dss->parent_clk);
626
627 fck_min = fck_min ? fck_min : 1;
628
629 fckd_start = min(prate * m / fck_min, fckd_hw_max);
630 fckd_stop = max(DIV_ROUND_UP(prate * m, fck_hw_max), 1ul);
631
632 for (fckd = fckd_start; fckd >= fckd_stop; --fckd) {
633 fck = DIV_ROUND_UP(prate, fckd) * m;
634
635 if (func(fck, data))
636 return true;
637 }
638
639 return false;
640}
641
642int dss_set_fck_rate(struct dss_device *dss, unsigned long rate)
643{
644 int r;
645
646 DSSDBG("set fck to %lu\n", rate);
647
648 r = clk_set_rate(dss->dss_clk, rate);
649 if (r)
650 return r;
651
652 dss->dss_clk_rate = clk_get_rate(dss->dss_clk);
653
654 WARN_ONCE(dss->dss_clk_rate != rate, "clk rate mismatch: %lu != %lu",
655 dss->dss_clk_rate, rate);
656
657 return 0;
658}
659
660unsigned long dss_get_dispc_clk_rate(struct dss_device *dss)
661{
662 return dss->dss_clk_rate;
663}
664
665unsigned long dss_get_max_fck_rate(struct dss_device *dss)
666{
667 return dss->feat->fck_freq_max;
668}
669
670static int dss_setup_default_clock(struct dss_device *dss)
671{
672 unsigned long max_dss_fck, prate;
673 unsigned long fck;
674 unsigned int fck_div;
675 int r;
676
677 max_dss_fck = dss->feat->fck_freq_max;
678
679 if (dss->parent_clk == NULL) {
680 fck = clk_round_rate(dss->dss_clk, max_dss_fck);
681 } else {
682 prate = clk_get_rate(dss->parent_clk);
683
684 fck_div = DIV_ROUND_UP(prate * dss->feat->dss_fck_multiplier,
685 max_dss_fck);
686 fck = DIV_ROUND_UP(prate, fck_div)
687 * dss->feat->dss_fck_multiplier;
688 }
689
690 r = dss_set_fck_rate(dss, fck);
691 if (r)
692 return r;
693
694 return 0;
695}
696
697void dss_set_venc_output(struct dss_device *dss, enum omap_dss_venc_type type)
698{
699 int l = 0;
700
701 if (type == OMAP_DSS_VENC_TYPE_COMPOSITE)
702 l = 0;
703 else if (type == OMAP_DSS_VENC_TYPE_SVIDEO)
704 l = 1;
705 else
706 BUG();
707
708
709 REG_FLD_MOD(dss, DSS_CONTROL, l, 6, 6);
710}
711
712void dss_set_dac_pwrdn_bgz(struct dss_device *dss, bool enable)
713{
714
715 REG_FLD_MOD(dss, DSS_CONTROL, enable, 5, 5);
716}
717
718void dss_select_hdmi_venc_clk_source(struct dss_device *dss,
719 enum dss_hdmi_venc_clk_source_select src)
720{
721 enum omap_dss_output_id outputs;
722
723 outputs = dss->feat->outputs[OMAP_DSS_CHANNEL_DIGIT];
724
725
726 WARN_ON((src == DSS_VENC_TV_CLK) && !(outputs & OMAP_DSS_OUTPUT_VENC));
727 WARN_ON((src == DSS_HDMI_M_PCLK) && !(outputs & OMAP_DSS_OUTPUT_HDMI));
728
729
730 if ((outputs & OMAP_DSS_OUTPUT_VENC) &&
731 (outputs & OMAP_DSS_OUTPUT_HDMI))
732
733 REG_FLD_MOD(dss, DSS_CONTROL, src, 15, 15);
734}
735
736static int dss_dpi_select_source_omap2_omap3(struct dss_device *dss, int port,
737 enum omap_channel channel)
738{
739 if (channel != OMAP_DSS_CHANNEL_LCD)
740 return -EINVAL;
741
742 return 0;
743}
744
745static int dss_dpi_select_source_omap4(struct dss_device *dss, int port,
746 enum omap_channel channel)
747{
748 int val;
749
750 switch (channel) {
751 case OMAP_DSS_CHANNEL_LCD2:
752 val = 0;
753 break;
754 case OMAP_DSS_CHANNEL_DIGIT:
755 val = 1;
756 break;
757 default:
758 return -EINVAL;
759 }
760
761 REG_FLD_MOD(dss, DSS_CONTROL, val, 17, 17);
762
763 return 0;
764}
765
766static int dss_dpi_select_source_omap5(struct dss_device *dss, int port,
767 enum omap_channel channel)
768{
769 int val;
770
771 switch (channel) {
772 case OMAP_DSS_CHANNEL_LCD:
773 val = 1;
774 break;
775 case OMAP_DSS_CHANNEL_LCD2:
776 val = 2;
777 break;
778 case OMAP_DSS_CHANNEL_LCD3:
779 val = 3;
780 break;
781 case OMAP_DSS_CHANNEL_DIGIT:
782 val = 0;
783 break;
784 default:
785 return -EINVAL;
786 }
787
788 REG_FLD_MOD(dss, DSS_CONTROL, val, 17, 16);
789
790 return 0;
791}
792
793static int dss_dpi_select_source_dra7xx(struct dss_device *dss, int port,
794 enum omap_channel channel)
795{
796 switch (port) {
797 case 0:
798 return dss_dpi_select_source_omap5(dss, port, channel);
799 case 1:
800 if (channel != OMAP_DSS_CHANNEL_LCD2)
801 return -EINVAL;
802 break;
803 case 2:
804 if (channel != OMAP_DSS_CHANNEL_LCD3)
805 return -EINVAL;
806 break;
807 default:
808 return -EINVAL;
809 }
810
811 return 0;
812}
813
814int dss_dpi_select_source(struct dss_device *dss, int port,
815 enum omap_channel channel)
816{
817 return dss->feat->ops->dpi_select_source(dss, port, channel);
818}
819
820static int dss_get_clocks(struct dss_device *dss)
821{
822 struct clk *clk;
823
824 clk = devm_clk_get(&dss->pdev->dev, "fck");
825 if (IS_ERR(clk)) {
826 DSSERR("can't get clock fck\n");
827 return PTR_ERR(clk);
828 }
829
830 dss->dss_clk = clk;
831
832 if (dss->feat->parent_clk_name) {
833 clk = clk_get(NULL, dss->feat->parent_clk_name);
834 if (IS_ERR(clk)) {
835 DSSERR("Failed to get %s\n",
836 dss->feat->parent_clk_name);
837 return PTR_ERR(clk);
838 }
839 } else {
840 clk = NULL;
841 }
842
843 dss->parent_clk = clk;
844
845 return 0;
846}
847
848static void dss_put_clocks(struct dss_device *dss)
849{
850 if (dss->parent_clk)
851 clk_put(dss->parent_clk);
852}
853
854int dss_runtime_get(struct dss_device *dss)
855{
856 int r;
857
858 DSSDBG("dss_runtime_get\n");
859
860 r = pm_runtime_get_sync(&dss->pdev->dev);
861 WARN_ON(r < 0);
862 return r < 0 ? r : 0;
863}
864
865void dss_runtime_put(struct dss_device *dss)
866{
867 int r;
868
869 DSSDBG("dss_runtime_put\n");
870
871 r = pm_runtime_put_sync(&dss->pdev->dev);
872 WARN_ON(r < 0 && r != -ENOSYS && r != -EBUSY);
873}
874
875struct dss_device *dss_get_device(struct device *dev)
876{
877 return dev_get_drvdata(dev);
878}
879
880
881#if defined(CONFIG_OMAP2_DSS_DEBUGFS)
882static int dss_initialize_debugfs(struct dss_device *dss)
883{
884 struct dentry *dir;
885
886 dir = debugfs_create_dir("omapdss", NULL);
887 if (IS_ERR(dir))
888 return PTR_ERR(dir);
889
890 dss->debugfs.root = dir;
891
892 return 0;
893}
894
895static void dss_uninitialize_debugfs(struct dss_device *dss)
896{
897 debugfs_remove_recursive(dss->debugfs.root);
898}
899
900struct dss_debugfs_entry {
901 struct dentry *dentry;
902 int (*show_fn)(struct seq_file *s, void *data);
903 void *data;
904};
905
906static int dss_debug_open(struct inode *inode, struct file *file)
907{
908 struct dss_debugfs_entry *entry = inode->i_private;
909
910 return single_open(file, entry->show_fn, entry->data);
911}
912
913static const struct file_operations dss_debug_fops = {
914 .open = dss_debug_open,
915 .read = seq_read,
916 .llseek = seq_lseek,
917 .release = single_release,
918};
919
920struct dss_debugfs_entry *
921dss_debugfs_create_file(struct dss_device *dss, const char *name,
922 int (*show_fn)(struct seq_file *s, void *data),
923 void *data)
924{
925 struct dss_debugfs_entry *entry;
926
927 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
928 if (!entry)
929 return ERR_PTR(-ENOMEM);
930
931 entry->show_fn = show_fn;
932 entry->data = data;
933 entry->dentry = debugfs_create_file(name, 0444, dss->debugfs.root,
934 entry, &dss_debug_fops);
935
936 return entry;
937}
938
939void dss_debugfs_remove_file(struct dss_debugfs_entry *entry)
940{
941 if (IS_ERR_OR_NULL(entry))
942 return;
943
944 debugfs_remove(entry->dentry);
945 kfree(entry);
946}
947
948#else
949static inline int dss_initialize_debugfs(struct dss_device *dss)
950{
951 return 0;
952}
953static inline void dss_uninitialize_debugfs(struct dss_device *dss)
954{
955}
956#endif
957
958static const struct dss_ops dss_ops_omap2_omap3 = {
959 .dpi_select_source = &dss_dpi_select_source_omap2_omap3,
960};
961
962static const struct dss_ops dss_ops_omap4 = {
963 .dpi_select_source = &dss_dpi_select_source_omap4,
964 .select_lcd_source = &dss_lcd_clk_mux_omap4,
965};
966
967static const struct dss_ops dss_ops_omap5 = {
968 .dpi_select_source = &dss_dpi_select_source_omap5,
969 .select_lcd_source = &dss_lcd_clk_mux_omap5,
970};
971
972static const struct dss_ops dss_ops_dra7 = {
973 .dpi_select_source = &dss_dpi_select_source_dra7xx,
974 .select_lcd_source = &dss_lcd_clk_mux_dra7,
975};
976
977static const enum omap_display_type omap2plus_ports[] = {
978 OMAP_DISPLAY_TYPE_DPI,
979};
980
981static const enum omap_display_type omap34xx_ports[] = {
982 OMAP_DISPLAY_TYPE_DPI,
983 OMAP_DISPLAY_TYPE_SDI,
984};
985
986static const enum omap_display_type dra7xx_ports[] = {
987 OMAP_DISPLAY_TYPE_DPI,
988 OMAP_DISPLAY_TYPE_DPI,
989 OMAP_DISPLAY_TYPE_DPI,
990};
991
992static const enum omap_dss_output_id omap2_dss_supported_outputs[] = {
993
994 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI,
995
996
997 OMAP_DSS_OUTPUT_VENC,
998};
999
1000static const enum omap_dss_output_id omap3430_dss_supported_outputs[] = {
1001
1002 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
1003 OMAP_DSS_OUTPUT_SDI | OMAP_DSS_OUTPUT_DSI1,
1004
1005
1006 OMAP_DSS_OUTPUT_VENC,
1007};
1008
1009static const enum omap_dss_output_id omap3630_dss_supported_outputs[] = {
1010
1011 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
1012 OMAP_DSS_OUTPUT_DSI1,
1013
1014
1015 OMAP_DSS_OUTPUT_VENC,
1016};
1017
1018static const enum omap_dss_output_id am43xx_dss_supported_outputs[] = {
1019
1020 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI,
1021};
1022
1023static const enum omap_dss_output_id omap4_dss_supported_outputs[] = {
1024
1025 OMAP_DSS_OUTPUT_DBI | OMAP_DSS_OUTPUT_DSI1,
1026
1027
1028 OMAP_DSS_OUTPUT_VENC | OMAP_DSS_OUTPUT_HDMI,
1029
1030
1031 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
1032 OMAP_DSS_OUTPUT_DSI2,
1033};
1034
1035static const enum omap_dss_output_id omap5_dss_supported_outputs[] = {
1036
1037 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
1038 OMAP_DSS_OUTPUT_DSI1 | OMAP_DSS_OUTPUT_DSI2,
1039
1040
1041 OMAP_DSS_OUTPUT_HDMI,
1042
1043
1044 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
1045 OMAP_DSS_OUTPUT_DSI1,
1046
1047
1048 OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
1049 OMAP_DSS_OUTPUT_DSI2,
1050};
1051
1052static const struct dss_features omap24xx_dss_feats = {
1053 .model = DSS_MODEL_OMAP2,
1054
1055
1056
1057
1058 .fck_div_max = 6,
1059 .fck_freq_max = 133000000,
1060 .dss_fck_multiplier = 2,
1061 .parent_clk_name = "core_ck",
1062 .ports = omap2plus_ports,
1063 .num_ports = ARRAY_SIZE(omap2plus_ports),
1064 .outputs = omap2_dss_supported_outputs,
1065 .ops = &dss_ops_omap2_omap3,
1066 .dispc_clk_switch = { 0, 0 },
1067 .has_lcd_clk_src = false,
1068};
1069
1070static const struct dss_features omap34xx_dss_feats = {
1071 .model = DSS_MODEL_OMAP3,
1072 .fck_div_max = 16,
1073 .fck_freq_max = 173000000,
1074 .dss_fck_multiplier = 2,
1075 .parent_clk_name = "dpll4_ck",
1076 .ports = omap34xx_ports,
1077 .outputs = omap3430_dss_supported_outputs,
1078 .num_ports = ARRAY_SIZE(omap34xx_ports),
1079 .ops = &dss_ops_omap2_omap3,
1080 .dispc_clk_switch = { 0, 0 },
1081 .has_lcd_clk_src = false,
1082};
1083
1084static const struct dss_features omap3630_dss_feats = {
1085 .model = DSS_MODEL_OMAP3,
1086 .fck_div_max = 31,
1087 .fck_freq_max = 173000000,
1088 .dss_fck_multiplier = 1,
1089 .parent_clk_name = "dpll4_ck",
1090 .ports = omap2plus_ports,
1091 .num_ports = ARRAY_SIZE(omap2plus_ports),
1092 .outputs = omap3630_dss_supported_outputs,
1093 .ops = &dss_ops_omap2_omap3,
1094 .dispc_clk_switch = { 0, 0 },
1095 .has_lcd_clk_src = false,
1096};
1097
1098static const struct dss_features omap44xx_dss_feats = {
1099 .model = DSS_MODEL_OMAP4,
1100 .fck_div_max = 32,
1101 .fck_freq_max = 186000000,
1102 .dss_fck_multiplier = 1,
1103 .parent_clk_name = "dpll_per_x2_ck",
1104 .ports = omap2plus_ports,
1105 .num_ports = ARRAY_SIZE(omap2plus_ports),
1106 .outputs = omap4_dss_supported_outputs,
1107 .ops = &dss_ops_omap4,
1108 .dispc_clk_switch = { 9, 8 },
1109 .has_lcd_clk_src = true,
1110};
1111
1112static const struct dss_features omap54xx_dss_feats = {
1113 .model = DSS_MODEL_OMAP5,
1114 .fck_div_max = 64,
1115 .fck_freq_max = 209250000,
1116 .dss_fck_multiplier = 1,
1117 .parent_clk_name = "dpll_per_x2_ck",
1118 .ports = omap2plus_ports,
1119 .num_ports = ARRAY_SIZE(omap2plus_ports),
1120 .outputs = omap5_dss_supported_outputs,
1121 .ops = &dss_ops_omap5,
1122 .dispc_clk_switch = { 9, 7 },
1123 .has_lcd_clk_src = true,
1124};
1125
1126static const struct dss_features am43xx_dss_feats = {
1127 .model = DSS_MODEL_OMAP3,
1128 .fck_div_max = 0,
1129 .fck_freq_max = 200000000,
1130 .dss_fck_multiplier = 0,
1131 .parent_clk_name = NULL,
1132 .ports = omap2plus_ports,
1133 .num_ports = ARRAY_SIZE(omap2plus_ports),
1134 .outputs = am43xx_dss_supported_outputs,
1135 .ops = &dss_ops_omap2_omap3,
1136 .dispc_clk_switch = { 0, 0 },
1137 .has_lcd_clk_src = true,
1138};
1139
1140static const struct dss_features dra7xx_dss_feats = {
1141 .model = DSS_MODEL_DRA7,
1142 .fck_div_max = 64,
1143 .fck_freq_max = 209250000,
1144 .dss_fck_multiplier = 1,
1145 .parent_clk_name = "dpll_per_x2_ck",
1146 .ports = dra7xx_ports,
1147 .num_ports = ARRAY_SIZE(dra7xx_ports),
1148 .outputs = omap5_dss_supported_outputs,
1149 .ops = &dss_ops_dra7,
1150 .dispc_clk_switch = { 9, 7 },
1151 .has_lcd_clk_src = true,
1152};
1153
1154static void __dss_uninit_ports(struct dss_device *dss, unsigned int num_ports)
1155{
1156 struct platform_device *pdev = dss->pdev;
1157 struct device_node *parent = pdev->dev.of_node;
1158 struct device_node *port;
1159 unsigned int i;
1160
1161 for (i = 0; i < num_ports; i++) {
1162 port = of_graph_get_port_by_id(parent, i);
1163 if (!port)
1164 continue;
1165
1166 switch (dss->feat->ports[i]) {
1167 case OMAP_DISPLAY_TYPE_DPI:
1168 dpi_uninit_port(port);
1169 break;
1170 case OMAP_DISPLAY_TYPE_SDI:
1171 sdi_uninit_port(port);
1172 break;
1173 default:
1174 break;
1175 }
1176 }
1177}
1178
1179static int dss_init_ports(struct dss_device *dss)
1180{
1181 struct platform_device *pdev = dss->pdev;
1182 struct device_node *parent = pdev->dev.of_node;
1183 struct device_node *port;
1184 unsigned int i;
1185 int r;
1186
1187 for (i = 0; i < dss->feat->num_ports; i++) {
1188 port = of_graph_get_port_by_id(parent, i);
1189 if (!port)
1190 continue;
1191
1192 switch (dss->feat->ports[i]) {
1193 case OMAP_DISPLAY_TYPE_DPI:
1194 r = dpi_init_port(dss, pdev, port, dss->feat->model);
1195 if (r)
1196 goto error;
1197 break;
1198
1199 case OMAP_DISPLAY_TYPE_SDI:
1200 r = sdi_init_port(dss, pdev, port);
1201 if (r)
1202 goto error;
1203 break;
1204
1205 default:
1206 break;
1207 }
1208 }
1209
1210 return 0;
1211
1212error:
1213 __dss_uninit_ports(dss, i);
1214 return r;
1215}
1216
1217static void dss_uninit_ports(struct dss_device *dss)
1218{
1219 __dss_uninit_ports(dss, dss->feat->num_ports);
1220}
1221
1222static int dss_video_pll_probe(struct dss_device *dss)
1223{
1224 struct platform_device *pdev = dss->pdev;
1225 struct device_node *np = pdev->dev.of_node;
1226 struct regulator *pll_regulator;
1227 int r;
1228
1229 if (!np)
1230 return 0;
1231
1232 if (of_property_read_bool(np, "syscon-pll-ctrl")) {
1233 dss->syscon_pll_ctrl = syscon_regmap_lookup_by_phandle(np,
1234 "syscon-pll-ctrl");
1235 if (IS_ERR(dss->syscon_pll_ctrl)) {
1236 dev_err(&pdev->dev,
1237 "failed to get syscon-pll-ctrl regmap\n");
1238 return PTR_ERR(dss->syscon_pll_ctrl);
1239 }
1240
1241 if (of_property_read_u32_index(np, "syscon-pll-ctrl", 1,
1242 &dss->syscon_pll_ctrl_offset)) {
1243 dev_err(&pdev->dev,
1244 "failed to get syscon-pll-ctrl offset\n");
1245 return -EINVAL;
1246 }
1247 }
1248
1249 pll_regulator = devm_regulator_get(&pdev->dev, "vdda_video");
1250 if (IS_ERR(pll_regulator)) {
1251 r = PTR_ERR(pll_regulator);
1252
1253 switch (r) {
1254 case -ENOENT:
1255 pll_regulator = NULL;
1256 break;
1257
1258 case -EPROBE_DEFER:
1259 return -EPROBE_DEFER;
1260
1261 default:
1262 DSSERR("can't get DPLL VDDA regulator\n");
1263 return r;
1264 }
1265 }
1266
1267 if (of_property_match_string(np, "reg-names", "pll1") >= 0) {
1268 dss->video1_pll = dss_video_pll_init(dss, pdev, 0,
1269 pll_regulator);
1270 if (IS_ERR(dss->video1_pll))
1271 return PTR_ERR(dss->video1_pll);
1272 }
1273
1274 if (of_property_match_string(np, "reg-names", "pll2") >= 0) {
1275 dss->video2_pll = dss_video_pll_init(dss, pdev, 1,
1276 pll_regulator);
1277 if (IS_ERR(dss->video2_pll)) {
1278 dss_video_pll_uninit(dss->video1_pll);
1279 return PTR_ERR(dss->video2_pll);
1280 }
1281 }
1282
1283 return 0;
1284}
1285
1286
1287static const struct of_device_id dss_of_match[] = {
1288 { .compatible = "ti,omap2-dss", .data = &omap24xx_dss_feats },
1289 { .compatible = "ti,omap3-dss", .data = &omap3630_dss_feats },
1290 { .compatible = "ti,omap4-dss", .data = &omap44xx_dss_feats },
1291 { .compatible = "ti,omap5-dss", .data = &omap54xx_dss_feats },
1292 { .compatible = "ti,dra7-dss", .data = &dra7xx_dss_feats },
1293 {},
1294};
1295MODULE_DEVICE_TABLE(of, dss_of_match);
1296
1297static const struct soc_device_attribute dss_soc_devices[] = {
1298 { .machine = "OMAP3430/3530", .data = &omap34xx_dss_feats },
1299 { .machine = "AM35??", .data = &omap34xx_dss_feats },
1300 { .family = "AM43xx", .data = &am43xx_dss_feats },
1301 { }
1302};
1303
1304static int dss_bind(struct device *dev)
1305{
1306 struct dss_device *dss = dev_get_drvdata(dev);
1307 struct platform_device *drm_pdev;
1308 int r;
1309
1310 r = component_bind_all(dev, NULL);
1311 if (r)
1312 return r;
1313
1314 pm_set_vt_switch(0);
1315
1316 omapdss_set_dss(dss);
1317
1318 drm_pdev = platform_device_register_simple("omapdrm", 0, NULL, 0);
1319 if (IS_ERR(drm_pdev)) {
1320 component_unbind_all(dev, NULL);
1321 return PTR_ERR(drm_pdev);
1322 }
1323
1324 dss->drm_pdev = drm_pdev;
1325
1326 return 0;
1327}
1328
1329static void dss_unbind(struct device *dev)
1330{
1331 struct dss_device *dss = dev_get_drvdata(dev);
1332
1333 platform_device_unregister(dss->drm_pdev);
1334
1335 omapdss_set_dss(NULL);
1336
1337 component_unbind_all(dev, NULL);
1338}
1339
1340static const struct component_master_ops dss_component_ops = {
1341 .bind = dss_bind,
1342 .unbind = dss_unbind,
1343};
1344
1345static int dss_component_compare(struct device *dev, void *data)
1346{
1347 struct device *child = data;
1348 return dev == child;
1349}
1350
1351struct dss_component_match_data {
1352 struct device *dev;
1353 struct component_match **match;
1354};
1355
1356static int dss_add_child_component(struct device *dev, void *data)
1357{
1358 struct dss_component_match_data *cmatch = data;
1359 struct component_match **match = cmatch->match;
1360
1361
1362
1363
1364
1365
1366
1367 if (strstr(dev_name(dev), "rfbi"))
1368 return 0;
1369
1370
1371
1372
1373
1374
1375
1376 if (strstr(dev_name(dev), "target-module"))
1377 return device_for_each_child(dev, cmatch,
1378 dss_add_child_component);
1379
1380 component_match_add(cmatch->dev, match, dss_component_compare, dev);
1381
1382 return 0;
1383}
1384
1385static int dss_probe_hardware(struct dss_device *dss)
1386{
1387 u32 rev;
1388 int r;
1389
1390 r = dss_runtime_get(dss);
1391 if (r)
1392 return r;
1393
1394 dss->dss_clk_rate = clk_get_rate(dss->dss_clk);
1395
1396
1397 REG_FLD_MOD(dss, DSS_CONTROL, 0, 0, 0);
1398
1399 dss_select_dispc_clk_source(dss, DSS_CLK_SRC_FCK);
1400
1401#ifdef CONFIG_OMAP2_DSS_VENC
1402 REG_FLD_MOD(dss, DSS_CONTROL, 1, 4, 4);
1403 REG_FLD_MOD(dss, DSS_CONTROL, 1, 3, 3);
1404 REG_FLD_MOD(dss, DSS_CONTROL, 0, 2, 2);
1405#endif
1406 dss->dsi_clk_source[0] = DSS_CLK_SRC_FCK;
1407 dss->dsi_clk_source[1] = DSS_CLK_SRC_FCK;
1408 dss->dispc_clk_source = DSS_CLK_SRC_FCK;
1409 dss->lcd_clk_source[0] = DSS_CLK_SRC_FCK;
1410 dss->lcd_clk_source[1] = DSS_CLK_SRC_FCK;
1411
1412 rev = dss_read_reg(dss, DSS_REVISION);
1413 pr_info("OMAP DSS rev %d.%d\n", FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
1414
1415 dss_runtime_put(dss);
1416
1417 return 0;
1418}
1419
1420static int dss_probe(struct platform_device *pdev)
1421{
1422 const struct soc_device_attribute *soc;
1423 struct dss_component_match_data cmatch;
1424 struct component_match *match = NULL;
1425 struct resource *dss_mem;
1426 struct dss_device *dss;
1427 int r;
1428
1429 dss = kzalloc(sizeof(*dss), GFP_KERNEL);
1430 if (!dss)
1431 return -ENOMEM;
1432
1433 dss->pdev = pdev;
1434 platform_set_drvdata(pdev, dss);
1435
1436 r = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
1437 if (r) {
1438 dev_err(&pdev->dev, "Failed to set the DMA mask\n");
1439 goto err_free_dss;
1440 }
1441
1442
1443
1444
1445
1446 soc = soc_device_match(dss_soc_devices);
1447 if (soc)
1448 dss->feat = soc->data;
1449 else
1450 dss->feat = of_match_device(dss_of_match, &pdev->dev)->data;
1451
1452
1453 dss_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1454 dss->base = devm_ioremap_resource(&pdev->dev, dss_mem);
1455 if (IS_ERR(dss->base)) {
1456 r = PTR_ERR(dss->base);
1457 goto err_free_dss;
1458 }
1459
1460 r = dss_get_clocks(dss);
1461 if (r)
1462 goto err_free_dss;
1463
1464 r = dss_setup_default_clock(dss);
1465 if (r)
1466 goto err_put_clocks;
1467
1468
1469 r = dss_video_pll_probe(dss);
1470 if (r)
1471 goto err_put_clocks;
1472
1473 r = dss_init_ports(dss);
1474 if (r)
1475 goto err_uninit_plls;
1476
1477
1478 pm_runtime_enable(&pdev->dev);
1479
1480 r = dss_probe_hardware(dss);
1481 if (r)
1482 goto err_pm_runtime_disable;
1483
1484
1485 r = dss_initialize_debugfs(dss);
1486 if (r)
1487 goto err_pm_runtime_disable;
1488
1489 dss->debugfs.clk = dss_debugfs_create_file(dss, "clk",
1490 dss_debug_dump_clocks, dss);
1491 dss->debugfs.dss = dss_debugfs_create_file(dss, "dss", dss_dump_regs,
1492 dss);
1493
1494
1495 r = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
1496 if (r)
1497 goto err_uninit_debugfs;
1498
1499 omapdss_gather_components(&pdev->dev);
1500
1501 cmatch.dev = &pdev->dev;
1502 cmatch.match = &match;
1503 device_for_each_child(&pdev->dev, &cmatch, dss_add_child_component);
1504
1505 r = component_master_add_with_match(&pdev->dev, &dss_component_ops, match);
1506 if (r)
1507 goto err_of_depopulate;
1508
1509 return 0;
1510
1511err_of_depopulate:
1512 of_platform_depopulate(&pdev->dev);
1513
1514err_uninit_debugfs:
1515 dss_debugfs_remove_file(dss->debugfs.clk);
1516 dss_debugfs_remove_file(dss->debugfs.dss);
1517 dss_uninitialize_debugfs(dss);
1518
1519err_pm_runtime_disable:
1520 pm_runtime_disable(&pdev->dev);
1521 dss_uninit_ports(dss);
1522
1523err_uninit_plls:
1524 if (dss->video1_pll)
1525 dss_video_pll_uninit(dss->video1_pll);
1526 if (dss->video2_pll)
1527 dss_video_pll_uninit(dss->video2_pll);
1528
1529err_put_clocks:
1530 dss_put_clocks(dss);
1531
1532err_free_dss:
1533 kfree(dss);
1534
1535 return r;
1536}
1537
1538static int dss_remove(struct platform_device *pdev)
1539{
1540 struct dss_device *dss = platform_get_drvdata(pdev);
1541
1542 of_platform_depopulate(&pdev->dev);
1543
1544 component_master_del(&pdev->dev, &dss_component_ops);
1545
1546 dss_debugfs_remove_file(dss->debugfs.clk);
1547 dss_debugfs_remove_file(dss->debugfs.dss);
1548 dss_uninitialize_debugfs(dss);
1549
1550 pm_runtime_disable(&pdev->dev);
1551
1552 dss_uninit_ports(dss);
1553
1554 if (dss->video1_pll)
1555 dss_video_pll_uninit(dss->video1_pll);
1556
1557 if (dss->video2_pll)
1558 dss_video_pll_uninit(dss->video2_pll);
1559
1560 dss_put_clocks(dss);
1561
1562 kfree(dss);
1563
1564 return 0;
1565}
1566
1567static void dss_shutdown(struct platform_device *pdev)
1568{
1569 struct omap_dss_device *dssdev = NULL;
1570
1571 DSSDBG("shutdown\n");
1572
1573 for_each_dss_output(dssdev) {
1574 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE &&
1575 dssdev->ops && dssdev->ops->disable)
1576 dssdev->ops->disable(dssdev);
1577 }
1578}
1579
1580static int dss_runtime_suspend(struct device *dev)
1581{
1582 struct dss_device *dss = dev_get_drvdata(dev);
1583
1584 dss_save_context(dss);
1585 dss_set_min_bus_tput(dev, 0);
1586
1587 pinctrl_pm_select_sleep_state(dev);
1588
1589 return 0;
1590}
1591
1592static int dss_runtime_resume(struct device *dev)
1593{
1594 struct dss_device *dss = dev_get_drvdata(dev);
1595 int r;
1596
1597 pinctrl_pm_select_default_state(dev);
1598
1599
1600
1601
1602
1603
1604
1605
1606 r = dss_set_min_bus_tput(dev, 1000000000);
1607 if (r)
1608 return r;
1609
1610 dss_restore_context(dss);
1611 return 0;
1612}
1613
1614static const struct dev_pm_ops dss_pm_ops = {
1615 .runtime_suspend = dss_runtime_suspend,
1616 .runtime_resume = dss_runtime_resume,
1617};
1618
1619struct platform_driver omap_dsshw_driver = {
1620 .probe = dss_probe,
1621 .remove = dss_remove,
1622 .shutdown = dss_shutdown,
1623 .driver = {
1624 .name = "omapdss_dss",
1625 .pm = &dss_pm_ops,
1626 .of_match_table = dss_of_match,
1627 .suppress_bind_attrs = true,
1628 },
1629};
1630
1631
1632static struct platform_driver * const omap_dss_drivers[] = {
1633 &omap_dsshw_driver,
1634 &omap_dispchw_driver,
1635#ifdef CONFIG_OMAP2_DSS_DSI
1636 &omap_dsihw_driver,
1637#endif
1638#ifdef CONFIG_OMAP2_DSS_VENC
1639 &omap_venchw_driver,
1640#endif
1641#ifdef CONFIG_OMAP4_DSS_HDMI
1642 &omapdss_hdmi4hw_driver,
1643#endif
1644#ifdef CONFIG_OMAP5_DSS_HDMI
1645 &omapdss_hdmi5hw_driver,
1646#endif
1647};
1648
1649static int __init omap_dss_init(void)
1650{
1651 return platform_register_drivers(omap_dss_drivers,
1652 ARRAY_SIZE(omap_dss_drivers));
1653}
1654
1655static void __exit omap_dss_exit(void)
1656{
1657 platform_unregister_drivers(omap_dss_drivers,
1658 ARRAY_SIZE(omap_dss_drivers));
1659}
1660
1661module_init(omap_dss_init);
1662module_exit(omap_dss_exit);
1663
1664MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
1665MODULE_DESCRIPTION("OMAP2/3/4/5 Display Subsystem");
1666MODULE_LICENSE("GPL v2");
1667
