tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
4 * Vincent Abriou <vincent.abriou@st.com>
5 * for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
7 */
8
9#include <linux/clk.h>
10#include <linux/component.h>
11#include <linux/module.h>
12#include <linux/of_platform.h>
13#include <linux/platform_device.h>
14#include <linux/reset.h>
15#include <linux/seq_file.h>
16
17#include <drm/drmP.h>
18#include <drm/drm_crtc_helper.h>
19
20#include "sti_crtc.h"
21#include "sti_vtg.h"
22
23/* glue registers */
24#define TVO_CSC_MAIN_M0 0x000
25#define TVO_CSC_MAIN_M1 0x004
26#define TVO_CSC_MAIN_M2 0x008
27#define TVO_CSC_MAIN_M3 0x00c
28#define TVO_CSC_MAIN_M4 0x010
29#define TVO_CSC_MAIN_M5 0x014
30#define TVO_CSC_MAIN_M6 0x018
31#define TVO_CSC_MAIN_M7 0x01c
32#define TVO_MAIN_IN_VID_FORMAT 0x030
33#define TVO_CSC_AUX_M0 0x100
34#define TVO_CSC_AUX_M1 0x104
35#define TVO_CSC_AUX_M2 0x108
36#define TVO_CSC_AUX_M3 0x10c
37#define TVO_CSC_AUX_M4 0x110
38#define TVO_CSC_AUX_M5 0x114
39#define TVO_CSC_AUX_M6 0x118
40#define TVO_CSC_AUX_M7 0x11c
41#define TVO_AUX_IN_VID_FORMAT 0x130
42#define TVO_VIP_HDF 0x400
43#define TVO_HD_SYNC_SEL 0x418
44#define TVO_HD_DAC_CFG_OFF 0x420
45#define TVO_VIP_HDMI 0x500
46#define TVO_HDMI_FORCE_COLOR_0 0x504
47#define TVO_HDMI_FORCE_COLOR_1 0x508
48#define TVO_HDMI_CLIP_VALUE_B_CB 0x50c
49#define TVO_HDMI_CLIP_VALUE_Y_G 0x510
50#define TVO_HDMI_CLIP_VALUE_R_CR 0x514
51#define TVO_HDMI_SYNC_SEL 0x518
52#define TVO_HDMI_DFV_OBS 0x540
53#define TVO_VIP_DVO 0x600
54#define TVO_DVO_SYNC_SEL 0x618
55#define TVO_DVO_CONFIG 0x620
56
57#define TVO_IN_FMT_SIGNED BIT(0)
58#define TVO_SYNC_EXT BIT(4)
59
60#define TVO_VIP_REORDER_R_SHIFT 24
61#define TVO_VIP_REORDER_G_SHIFT 20
62#define TVO_VIP_REORDER_B_SHIFT 16
63#define TVO_VIP_REORDER_MASK 0x3
64#define TVO_VIP_REORDER_Y_G_SEL 0
65#define TVO_VIP_REORDER_CB_B_SEL 1
66#define TVO_VIP_REORDER_CR_R_SEL 2
67
68#define TVO_VIP_CLIP_SHIFT 8
69#define TVO_VIP_CLIP_MASK 0x7
70#define TVO_VIP_CLIP_DISABLED 0
71#define TVO_VIP_CLIP_EAV_SAV 1
72#define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
73#define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
74#define TVO_VIP_CLIP_PROG_RANGE 4
75
76#define TVO_VIP_RND_SHIFT 4
77#define TVO_VIP_RND_MASK 0x3
78#define TVO_VIP_RND_8BIT_ROUNDED 0
79#define TVO_VIP_RND_10BIT_ROUNDED 1
80#define TVO_VIP_RND_12BIT_ROUNDED 2
81
82#define TVO_VIP_SEL_INPUT_MASK 0xf
83#define TVO_VIP_SEL_INPUT_MAIN 0x0
84#define TVO_VIP_SEL_INPUT_AUX 0x8
85#define TVO_VIP_SEL_INPUT_FORCE_COLOR 0xf
86#define TVO_VIP_SEL_INPUT_BYPASS_MASK 0x1
87#define TVO_VIP_SEL_INPUT_BYPASSED 1
88
89#define TVO_SYNC_MAIN_VTG_SET_REF 0x00
90#define TVO_SYNC_AUX_VTG_SET_REF 0x10
91
92#define TVO_SYNC_HD_DCS_SHIFT 8
93
94#define TVO_SYNC_DVO_PAD_HSYNC_SHIFT 8
95#define TVO_SYNC_DVO_PAD_VSYNC_SHIFT 16
96
97#define ENCODER_CRTC_MASK (BIT(0) | BIT(1))
98
99#define TVO_MIN_HD_HEIGHT 720
100
101/* enum listing the supported output data format */
102enum sti_tvout_video_out_type {
103 STI_TVOUT_VIDEO_OUT_RGB,
104 STI_TVOUT_VIDEO_OUT_YUV,
105};
106
107struct sti_tvout {
108 struct device *dev;
109 struct drm_device *drm_dev;
110 void __iomem *regs;
111 struct reset_control *reset;
112 struct drm_encoder *hdmi;
113 struct drm_encoder *hda;
114 struct drm_encoder *dvo;
115};
116
117struct sti_tvout_encoder {
118 struct drm_encoder encoder;
119 struct sti_tvout *tvout;
120};
121
122#define to_sti_tvout_encoder(x) \
123 container_of(x, struct sti_tvout_encoder, encoder)
124
125#define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
126
127/* preformatter conversion matrix */
128static const u32 rgb_to_ycbcr_601[8] = {
129 0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
130 0x0000082E, 0x00002000, 0x00002000, 0x00000000
131};
132
133/* 709 RGB to YCbCr */
134static const u32 rgb_to_ycbcr_709[8] = {
135 0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
136 0x0000082F, 0x00002000, 0x00002000, 0x00000000
137};
138
139static u32 tvout_read(struct sti_tvout *tvout, int offset)
140{
141 return readl(tvout->regs + offset);
142}
143
144static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
145{
146 writel(val, tvout->regs + offset);
147}
148
149/**
150 * Set the clipping mode of a VIP
151 *
152 * @tvout: tvout structure
153 * @reg: register to set
154 * @cr_r:
155 * @y_g:
156 * @cb_b:
157 */
158static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
159 u32 cr_r, u32 y_g, u32 cb_b)
160{
161 u32 val = tvout_read(tvout, reg);
162
163 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
164 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
165 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
166 val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
167 val |= y_g << TVO_VIP_REORDER_G_SHIFT;
168 val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
169
170 tvout_write(tvout, val, reg);
171}
172
173/**
174 * Set the clipping mode of a VIP
175 *
176 * @tvout: tvout structure
177 * @reg: register to set
178 * @range: clipping range
179 */
180static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
181{
182 u32 val = tvout_read(tvout, reg);
183
184 val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
185 val |= range << TVO_VIP_CLIP_SHIFT;
186 tvout_write(tvout, val, reg);
187}
188
189/**
190 * Set the rounded value of a VIP
191 *
192 * @tvout: tvout structure
193 * @reg: register to set
194 * @rnd: rounded val per component
195 */
196static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
197{
198 u32 val = tvout_read(tvout, reg);
199
200 val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
201 val |= rnd << TVO_VIP_RND_SHIFT;
202 tvout_write(tvout, val, reg);
203}
204
205/**
206 * Select the VIP input
207 *
208 * @tvout: tvout structure
209 * @reg: register to set
210 * @main_path: main or auxiliary path
211 * @sel_input_logic_inverted: need to invert the logic
212 * @sel_input: selected_input (main/aux + conv)
213 */
214static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
215 int reg,
216 bool main_path,
217 bool sel_input_logic_inverted,
218 enum sti_tvout_video_out_type video_out)
219{
220 u32 sel_input;
221 u32 val = tvout_read(tvout, reg);
222
223 if (main_path)
224 sel_input = TVO_VIP_SEL_INPUT_MAIN;
225 else
226 sel_input = TVO_VIP_SEL_INPUT_AUX;
227
228 switch (video_out) {
229 case STI_TVOUT_VIDEO_OUT_RGB:
230 sel_input |= TVO_VIP_SEL_INPUT_BYPASSED;
231 break;
232 case STI_TVOUT_VIDEO_OUT_YUV:
233 sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED;
234 break;
235 }
236
237 /* on stih407 chip the sel_input bypass mode logic is inverted */
238 if (sel_input_logic_inverted)
239 sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
240
241 val &= ~TVO_VIP_SEL_INPUT_MASK;
242 val |= sel_input;
243 tvout_write(tvout, val, reg);
244}
245
246/**
247 * Select the input video signed or unsigned
248 *
249 * @tvout: tvout structure
250 * @reg: register to set
251 * @in_vid_signed: used video input format
252 */
253static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
254 int reg, u32 in_vid_fmt)
255{
256 u32 val = tvout_read(tvout, reg);
257
258 val &= ~TVO_IN_FMT_SIGNED;
259 val |= in_vid_fmt;
260 tvout_write(tvout, val, reg);
261}
262
263/**
264 * Set preformatter matrix
265 *
266 * @tvout: tvout structure
267 * @mode: display mode structure
268 */
269static void tvout_preformatter_set_matrix(struct sti_tvout *tvout,
270 struct drm_display_mode *mode)
271{
272 unsigned int i;
273 const u32 *pf_matrix;
274
275 if (mode->vdisplay >= TVO_MIN_HD_HEIGHT)
276 pf_matrix = rgb_to_ycbcr_709;
277 else
278 pf_matrix = rgb_to_ycbcr_601;
279
280 for (i = 0; i < 8; i++) {
281 tvout_write(tvout, *(pf_matrix + i),
282 TVO_CSC_MAIN_M0 + (i * 4));
283 tvout_write(tvout, *(pf_matrix + i),
284 TVO_CSC_AUX_M0 + (i * 4));
285 }
286}
287
288/**
289 * Start VIP block for DVO output
290 *
291 * @tvout: pointer on tvout structure
292 * @main_path: true if main path has to be used in the vip configuration
293 * else aux path is used.
294 */
295static void tvout_dvo_start(struct sti_tvout *tvout, bool main_path)
296{
297 struct device_node *node = tvout->dev->of_node;
298 bool sel_input_logic_inverted = false;
299 u32 tvo_in_vid_format;
300 int val, tmp;
301
302 dev_dbg(tvout->dev, "%s\n", __func__);
303
304 if (main_path) {
305 DRM_DEBUG_DRIVER("main vip for DVO\n");
306 /* Select the input sync for dvo */
307 tmp = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_DVO;
308 val = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
309 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
310 val |= tmp;
311 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
312 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
313 } else {
314 DRM_DEBUG_DRIVER("aux vip for DVO\n");
315 /* Select the input sync for dvo */
316 tmp = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_DVO;
317 val = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
318 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
319 val |= tmp;
320 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
321 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
322 }
323
324 /* Set color channel order */
325 tvout_vip_set_color_order(tvout, TVO_VIP_DVO,
326 TVO_VIP_REORDER_CR_R_SEL,
327 TVO_VIP_REORDER_Y_G_SEL,
328 TVO_VIP_REORDER_CB_B_SEL);
329
330 /* Set clipping mode */
331 tvout_vip_set_clip_mode(tvout, TVO_VIP_DVO, TVO_VIP_CLIP_DISABLED);
332
333 /* Set round mode (rounded to 8-bit per component) */
334 tvout_vip_set_rnd(tvout, TVO_VIP_DVO, TVO_VIP_RND_8BIT_ROUNDED);
335
336 if (of_device_is_compatible(node, "st,stih407-tvout")) {
337 /* Set input video format */
338 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
339 TVO_IN_FMT_SIGNED);
340 sel_input_logic_inverted = true;
341 }
342
343 /* Input selection */
344 tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path,
345 sel_input_logic_inverted,
346 STI_TVOUT_VIDEO_OUT_RGB);
347}
348
349/**
350 * Start VIP block for HDMI output
351 *
352 * @tvout: pointer on tvout structure
353 * @main_path: true if main path has to be used in the vip configuration
354 * else aux path is used.
355 */
356static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
357{
358 struct device_node *node = tvout->dev->of_node;
359 bool sel_input_logic_inverted = false;
360 u32 tvo_in_vid_format;
361
362 dev_dbg(tvout->dev, "%s\n", __func__);
363
364 if (main_path) {
365 DRM_DEBUG_DRIVER("main vip for hdmi\n");
366 /* select the input sync for hdmi */
367 tvout_write(tvout,
368 TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDMI,
369 TVO_HDMI_SYNC_SEL);
370 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
371 } else {
372 DRM_DEBUG_DRIVER("aux vip for hdmi\n");
373 /* select the input sync for hdmi */
374 tvout_write(tvout,
375 TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDMI,
376 TVO_HDMI_SYNC_SEL);
377 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
378 }
379
380 /* set color channel order */
381 tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
382 TVO_VIP_REORDER_CR_R_SEL,
383 TVO_VIP_REORDER_Y_G_SEL,
384 TVO_VIP_REORDER_CB_B_SEL);
385
386 /* set clipping mode */
387 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI, TVO_VIP_CLIP_DISABLED);
388
389 /* set round mode (rounded to 8-bit per component) */
390 tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED);
391
392 if (of_device_is_compatible(node, "st,stih407-tvout")) {
393 /* set input video format */
394 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
395 TVO_IN_FMT_SIGNED);
396 sel_input_logic_inverted = true;
397 }
398
399 /* input selection */
400 tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path,
401 sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB);
402}
403
404/**
405 * Start HDF VIP and HD DAC
406 *
407 * @tvout: pointer on tvout structure
408 * @main_path: true if main path has to be used in the vip configuration
409 * else aux path is used.
410 */
411static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
412{
413 struct device_node *node = tvout->dev->of_node;
414 bool sel_input_logic_inverted = false;
415 u32 tvo_in_vid_format;
416 int val;
417
418 dev_dbg(tvout->dev, "%s\n", __func__);
419
420 if (main_path) {
421 DRM_DEBUG_DRIVER("main vip for HDF\n");
422 /* Select the input sync for HD analog and HD DCS */
423 val = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
424 val = val << TVO_SYNC_HD_DCS_SHIFT;
425 val |= TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDF;
426 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
427 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
428 } else {
429 DRM_DEBUG_DRIVER("aux vip for HDF\n");
430 /* Select the input sync for HD analog and HD DCS */
431 val = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
432 val = val << TVO_SYNC_HD_DCS_SHIFT;
433 val |= TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDF;
434 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
435 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
436 }
437
438 /* set color channel order */
439 tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
440 TVO_VIP_REORDER_CR_R_SEL,
441 TVO_VIP_REORDER_Y_G_SEL,
442 TVO_VIP_REORDER_CB_B_SEL);
443
444 /* set clipping mode */
445 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_DISABLED);
446
447 /* set round mode (rounded to 10-bit per component) */
448 tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
449
450 if (of_device_is_compatible(node, "st,stih407-tvout")) {
451 /* set input video format */
452 tvout_vip_set_in_vid_fmt(tvout,
453 tvo_in_vid_format, TVO_IN_FMT_SIGNED);
454 sel_input_logic_inverted = true;
455 }
456
457 /* Input selection */
458 tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
459 sel_input_logic_inverted,
460 STI_TVOUT_VIDEO_OUT_YUV);
461
462 /* power up HD DAC */
463 tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
464}
465
466#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
467 readl(tvout->regs + reg))
468
469static void tvout_dbg_vip(struct seq_file *s, int val)
470{
471 int r, g, b, tmp, mask;
472 char *const reorder[] = {"Y_G", "Cb_B", "Cr_R"};
473 char *const clipping[] = {"No", "EAV/SAV", "Limited range RGB/Y",
474 "Limited range Cb/Cr", "decided by register"};
475 char *const round[] = {"8-bit", "10-bit", "12-bit"};
476 char *const input_sel[] = {"Main (color matrix enabled)",
477 "Main (color matrix by-passed)",
478 "", "", "", "", "", "",
479 "Aux (color matrix enabled)",
480 "Aux (color matrix by-passed)",
481 "", "", "", "", "", "Force value"};
482
483 seq_puts(s, "\t");
484 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT;
485 r = (val & mask) >> TVO_VIP_REORDER_R_SHIFT;
486 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT;
487 g = (val & mask) >> TVO_VIP_REORDER_G_SHIFT;
488 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT;
489 b = (val & mask) >> TVO_VIP_REORDER_B_SHIFT;
490 seq_printf(s, "%-24s %s->%s %s->%s %s->%s\n", "Reorder:",
491 reorder[r], reorder[TVO_VIP_REORDER_CR_R_SEL],
492 reorder[g], reorder[TVO_VIP_REORDER_Y_G_SEL],
493 reorder[b], reorder[TVO_VIP_REORDER_CB_B_SEL]);
494 seq_puts(s, "\t\t\t\t\t");
495 mask = TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT;
496 tmp = (val & mask) >> TVO_VIP_CLIP_SHIFT;
497 seq_printf(s, "%-24s %s\n", "Clipping:", clipping[tmp]);
498 seq_puts(s, "\t\t\t\t\t");
499 mask = TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT;
500 tmp = (val & mask) >> TVO_VIP_RND_SHIFT;
501 seq_printf(s, "%-24s input data rounded to %s per component\n",
502 "Round:", round[tmp]);
503 seq_puts(s, "\t\t\t\t\t");
504 tmp = (val & TVO_VIP_SEL_INPUT_MASK);
505 seq_printf(s, "%-24s %s", "Input selection:", input_sel[tmp]);
506}
507
508static void tvout_dbg_hd_dac_cfg(struct seq_file *s, int val)
509{
510 seq_printf(s, "\t%-24s %s", "HD DAC:",
511 val & 1 ? "disabled" : "enabled");
512}
513
514static int tvout_dbg_show(struct seq_file *s, void *data)
515{
516 struct drm_info_node *node = s->private;
517 struct sti_tvout *tvout = (struct sti_tvout *)node->info_ent->data;
518 struct drm_device *dev = node->minor->dev;
519 struct drm_crtc *crtc;
520 int ret;
521
522 ret = mutex_lock_interruptible(&dev->struct_mutex);
523 if (ret)
524 return ret;
525
526 seq_printf(s, "TVOUT: (vaddr = 0x%p)", tvout->regs);
527
528 seq_puts(s, "\n\n HDMI encoder: ");
529 crtc = tvout->hdmi->crtc;
530 if (crtc) {
531 seq_printf(s, "connected to %s path",
532 sti_crtc_is_main(crtc) ? "main" : "aux");
533 DBGFS_DUMP(TVO_HDMI_SYNC_SEL);
534 DBGFS_DUMP(TVO_VIP_HDMI);
535 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDMI));
536 } else {
537 seq_puts(s, "disabled");
538 }
539
540 seq_puts(s, "\n\n DVO encoder: ");
541 crtc = tvout->dvo->crtc;
542 if (crtc) {
543 seq_printf(s, "connected to %s path",
544 sti_crtc_is_main(crtc) ? "main" : "aux");
545 DBGFS_DUMP(TVO_DVO_SYNC_SEL);
546 DBGFS_DUMP(TVO_DVO_CONFIG);
547 DBGFS_DUMP(TVO_VIP_DVO);
548 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_DVO));
549 } else {
550 seq_puts(s, "disabled");
551 }
552
553 seq_puts(s, "\n\n HDA encoder: ");
554 crtc = tvout->hda->crtc;
555 if (crtc) {
556 seq_printf(s, "connected to %s path",
557 sti_crtc_is_main(crtc) ? "main" : "aux");
558 DBGFS_DUMP(TVO_HD_SYNC_SEL);
559 DBGFS_DUMP(TVO_HD_DAC_CFG_OFF);
560 tvout_dbg_hd_dac_cfg(s,
561 readl(tvout->regs + TVO_HD_DAC_CFG_OFF));
562 DBGFS_DUMP(TVO_VIP_HDF);
563 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDF));
564 } else {
565 seq_puts(s, "disabled");
566 }
567
568 seq_puts(s, "\n\n main path configuration");
569 DBGFS_DUMP(TVO_CSC_MAIN_M0);
570 DBGFS_DUMP(TVO_CSC_MAIN_M1);
571 DBGFS_DUMP(TVO_CSC_MAIN_M2);
572 DBGFS_DUMP(TVO_CSC_MAIN_M3);
573 DBGFS_DUMP(TVO_CSC_MAIN_M4);
574 DBGFS_DUMP(TVO_CSC_MAIN_M5);
575 DBGFS_DUMP(TVO_CSC_MAIN_M6);
576 DBGFS_DUMP(TVO_CSC_MAIN_M7);
577 DBGFS_DUMP(TVO_MAIN_IN_VID_FORMAT);
578
579 seq_puts(s, "\n\n auxiliary path configuration");
580 DBGFS_DUMP(TVO_CSC_AUX_M0);
581 DBGFS_DUMP(TVO_CSC_AUX_M2);
582 DBGFS_DUMP(TVO_CSC_AUX_M3);
583 DBGFS_DUMP(TVO_CSC_AUX_M4);
584 DBGFS_DUMP(TVO_CSC_AUX_M5);
585 DBGFS_DUMP(TVO_CSC_AUX_M6);
586 DBGFS_DUMP(TVO_CSC_AUX_M7);
587 DBGFS_DUMP(TVO_AUX_IN_VID_FORMAT);
588 seq_puts(s, "\n");
589
590 mutex_unlock(&dev->struct_mutex);
591 return 0;
592}
593
594static struct drm_info_list tvout_debugfs_files[] = {
595 { "tvout", tvout_dbg_show, 0, NULL },
596};
597
598static void tvout_debugfs_exit(struct sti_tvout *tvout, struct drm_minor *minor)
599{
600 drm_debugfs_remove_files(tvout_debugfs_files,
601 ARRAY_SIZE(tvout_debugfs_files),
602 minor);
603}
604
605static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor)
606{
607 unsigned int i;
608
609 for (i = 0; i < ARRAY_SIZE(tvout_debugfs_files); i++)
610 tvout_debugfs_files[i].data = tvout;
611
612 return drm_debugfs_create_files(tvout_debugfs_files,
613 ARRAY_SIZE(tvout_debugfs_files),
614 minor->debugfs_root, minor);
615}
616
617static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
618{
619}
620
621static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
622 struct drm_display_mode *mode,
623 struct drm_display_mode *adjusted_mode)
624{
625}
626
627static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
628{
629 struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
630
631 drm_encoder_cleanup(encoder);
632 kfree(sti_encoder);
633}
634
635static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
636 .destroy = sti_tvout_encoder_destroy,
637};
638
639static void sti_dvo_encoder_enable(struct drm_encoder *encoder)
640{
641 struct sti_tvout *tvout = to_sti_tvout(encoder);
642
643 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
644
645 tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc));
646}
647
648static void sti_dvo_encoder_disable(struct drm_encoder *encoder)
649{
650 struct sti_tvout *tvout = to_sti_tvout(encoder);
651
652 /* Reset VIP register */
653 tvout_write(tvout, 0x0, TVO_VIP_DVO);
654}
655
656static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = {
657 .dpms = sti_tvout_encoder_dpms,
658 .mode_set = sti_tvout_encoder_mode_set,
659 .enable = sti_dvo_encoder_enable,
660 .disable = sti_dvo_encoder_disable,
661};
662
663static struct drm_encoder *
664sti_tvout_create_dvo_encoder(struct drm_device *dev,
665 struct sti_tvout *tvout)
666{
667 struct sti_tvout_encoder *encoder;
668 struct drm_encoder *drm_encoder;
669
670 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
671 if (!encoder)
672 return NULL;
673
674 encoder->tvout = tvout;
675
676 drm_encoder = (struct drm_encoder *)encoder;
677
678 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
679 drm_encoder->possible_clones = 1 << 0;
680
681 drm_encoder_init(dev, drm_encoder,
682 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS,
683 NULL);
684
685 drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs);
686
687 return drm_encoder;
688}
689
690static void sti_hda_encoder_enable(struct drm_encoder *encoder)
691{
692 struct sti_tvout *tvout = to_sti_tvout(encoder);
693
694 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
695
696 tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc));
697}
698
699static void sti_hda_encoder_disable(struct drm_encoder *encoder)
700{
701 struct sti_tvout *tvout = to_sti_tvout(encoder);
702
703 /* reset VIP register */
704 tvout_write(tvout, 0x0, TVO_VIP_HDF);
705
706 /* power down HD DAC */
707 tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
708}
709
710static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
711 .dpms = sti_tvout_encoder_dpms,
712 .mode_set = sti_tvout_encoder_mode_set,
713 .commit = sti_hda_encoder_enable,
714 .disable = sti_hda_encoder_disable,
715};
716
717static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
718 struct sti_tvout *tvout)
719{
720 struct sti_tvout_encoder *encoder;
721 struct drm_encoder *drm_encoder;
722
723 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
724 if (!encoder)
725 return NULL;
726
727 encoder->tvout = tvout;
728
729 drm_encoder = (struct drm_encoder *) encoder;
730
731 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
732 drm_encoder->possible_clones = 1 << 0;
733
734 drm_encoder_init(dev, drm_encoder,
735 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL);
736
737 drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
738
739 return drm_encoder;
740}
741
742static void sti_hdmi_encoder_enable(struct drm_encoder *encoder)
743{
744 struct sti_tvout *tvout = to_sti_tvout(encoder);
745
746 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
747
748 tvout_hdmi_start(tvout, sti_crtc_is_main(encoder->crtc));
749}
750
751static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
752{
753 struct sti_tvout *tvout = to_sti_tvout(encoder);
754
755 /* reset VIP register */
756 tvout_write(tvout, 0x0, TVO_VIP_HDMI);
757}
758
759static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
760 .dpms = sti_tvout_encoder_dpms,
761 .mode_set = sti_tvout_encoder_mode_set,
762 .commit = sti_hdmi_encoder_enable,
763 .disable = sti_hdmi_encoder_disable,
764};
765
766static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
767 struct sti_tvout *tvout)
768{
769 struct sti_tvout_encoder *encoder;
770 struct drm_encoder *drm_encoder;
771
772 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
773 if (!encoder)
774 return NULL;
775
776 encoder->tvout = tvout;
777
778 drm_encoder = (struct drm_encoder *) encoder;
779
780 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
781 drm_encoder->possible_clones = 1 << 1;
782
783 drm_encoder_init(dev, drm_encoder,
784 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL);
785
786 drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
787
788 return drm_encoder;
789}
790
791static void sti_tvout_create_encoders(struct drm_device *dev,
792 struct sti_tvout *tvout)
793{
794 tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
795 tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
796 tvout->dvo = sti_tvout_create_dvo_encoder(dev, tvout);
797}
798
799static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
800{
801 if (tvout->hdmi)
802 drm_encoder_cleanup(tvout->hdmi);
803 tvout->hdmi = NULL;
804
805 if (tvout->hda)
806 drm_encoder_cleanup(tvout->hda);
807 tvout->hda = NULL;
808
809 if (tvout->dvo)
810 drm_encoder_cleanup(tvout->dvo);
811 tvout->dvo = NULL;
812}
813
814static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
815{
816 struct sti_tvout *tvout = dev_get_drvdata(dev);
817 struct drm_device *drm_dev = data;
818
819 tvout->drm_dev = drm_dev;
820
821 sti_tvout_create_encoders(drm_dev, tvout);
822
823 if (tvout_debugfs_init(tvout, drm_dev->primary))
824 DRM_ERROR("TVOUT debugfs setup failed\n");
825
826 return 0;
827}
828
829static void sti_tvout_unbind(struct device *dev, struct device *master,
830 void *data)
831{
832 struct sti_tvout *tvout = dev_get_drvdata(dev);
833 struct drm_device *drm_dev = data;
834
835 sti_tvout_destroy_encoders(tvout);
836
837 tvout_debugfs_exit(tvout, drm_dev->primary);
838}
839
840static const struct component_ops sti_tvout_ops = {
841 .bind = sti_tvout_bind,
842 .unbind = sti_tvout_unbind,
843};
844
845static int sti_tvout_probe(struct platform_device *pdev)
846{
847 struct device *dev = &pdev->dev;
848 struct device_node *node = dev->of_node;
849 struct sti_tvout *tvout;
850 struct resource *res;
851
852 DRM_INFO("%s\n", __func__);
853
854 if (!node)
855 return -ENODEV;
856
857 tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
858 if (!tvout)
859 return -ENOMEM;
860
861 tvout->dev = dev;
862
863 /* get Memory ressources */
864 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
865 if (!res) {
866 DRM_ERROR("Invalid glue resource\n");
867 return -ENOMEM;
868 }
869 tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
870 if (!tvout->regs)
871 return -ENOMEM;
872
873 /* get reset resources */
874 tvout->reset = devm_reset_control_get(dev, "tvout");
875 /* take tvout out of reset */
876 if (!IS_ERR(tvout->reset))
877 reset_control_deassert(tvout->reset);
878
879 platform_set_drvdata(pdev, tvout);
880
881 return component_add(dev, &sti_tvout_ops);
882}
883
884static int sti_tvout_remove(struct platform_device *pdev)
885{
886 component_del(&pdev->dev, &sti_tvout_ops);
887 return 0;
888}
889
890static const struct of_device_id tvout_of_match[] = {
891 { .compatible = "st,stih416-tvout", },
892 { .compatible = "st,stih407-tvout", },
893 { /* end node */ }
894};
895MODULE_DEVICE_TABLE(of, tvout_of_match);
896
897struct platform_driver sti_tvout_driver = {
898 .driver = {
899 .name = "sti-tvout",
900 .owner = THIS_MODULE,
901 .of_match_table = tvout_of_match,
902 },
903 .probe = sti_tvout_probe,
904 .remove = sti_tvout_remove,
905};
906
907MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
908MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
909MODULE_LICENSE("GPL");