1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) STMicroelectronics SA 2014
4 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
5 * Vincent Abriou <vincent.abriou@st.com>
6 * for STMicroelectronics.
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_drv.h"
22 #include "sti_vtg.h"
23
24 /* glue registers */
25 #define TVO_CSC_MAIN_M0 0x000
26 #define TVO_CSC_MAIN_M1 0x004
27 #define TVO_CSC_MAIN_M2 0x008
28 #define TVO_CSC_MAIN_M3 0x00c
29 #define TVO_CSC_MAIN_M4 0x010
30 #define TVO_CSC_MAIN_M5 0x014
31 #define TVO_CSC_MAIN_M6 0x018
32 #define TVO_CSC_MAIN_M7 0x01c
33 #define TVO_MAIN_IN_VID_FORMAT 0x030
34 #define TVO_CSC_AUX_M0 0x100
35 #define TVO_CSC_AUX_M1 0x104
36 #define TVO_CSC_AUX_M2 0x108
37 #define TVO_CSC_AUX_M3 0x10c
38 #define TVO_CSC_AUX_M4 0x110
39 #define TVO_CSC_AUX_M5 0x114
40 #define TVO_CSC_AUX_M6 0x118
41 #define TVO_CSC_AUX_M7 0x11c
42 #define TVO_AUX_IN_VID_FORMAT 0x130
43 #define TVO_VIP_HDF 0x400
44 #define TVO_HD_SYNC_SEL 0x418
45 #define TVO_HD_DAC_CFG_OFF 0x420
46 #define TVO_VIP_HDMI 0x500
47 #define TVO_HDMI_FORCE_COLOR_0 0x504
48 #define TVO_HDMI_FORCE_COLOR_1 0x508
49 #define TVO_HDMI_CLIP_VALUE_B_CB 0x50c
50 #define TVO_HDMI_CLIP_VALUE_Y_G 0x510
51 #define TVO_HDMI_CLIP_VALUE_R_CR 0x514
52 #define TVO_HDMI_SYNC_SEL 0x518
53 #define TVO_HDMI_DFV_OBS 0x540
54 #define TVO_VIP_DVO 0x600
55 #define TVO_DVO_SYNC_SEL 0x618
56 #define TVO_DVO_CONFIG 0x620
57
58 #define TVO_IN_FMT_SIGNED BIT(0)
59 #define TVO_SYNC_EXT BIT(4)
60
61 #define TVO_VIP_REORDER_R_SHIFT 24
62 #define TVO_VIP_REORDER_G_SHIFT 20
63 #define TVO_VIP_REORDER_B_SHIFT 16
64 #define TVO_VIP_REORDER_MASK 0x3
65 #define TVO_VIP_REORDER_Y_G_SEL 0
66 #define TVO_VIP_REORDER_CB_B_SEL 1
67 #define TVO_VIP_REORDER_CR_R_SEL 2
68
69 #define TVO_VIP_CLIP_SHIFT 8
70 #define TVO_VIP_CLIP_MASK 0x7
71 #define TVO_VIP_CLIP_DISABLED 0
72 #define TVO_VIP_CLIP_EAV_SAV 1
73 #define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
74 #define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
75 #define TVO_VIP_CLIP_PROG_RANGE 4
76
77 #define TVO_VIP_RND_SHIFT 4
78 #define TVO_VIP_RND_MASK 0x3
79 #define TVO_VIP_RND_8BIT_ROUNDED 0
80 #define TVO_VIP_RND_10BIT_ROUNDED 1
81 #define TVO_VIP_RND_12BIT_ROUNDED 2
82
83 #define TVO_VIP_SEL_INPUT_MASK 0xf
84 #define TVO_VIP_SEL_INPUT_MAIN 0x0
85 #define TVO_VIP_SEL_INPUT_AUX 0x8
86 #define TVO_VIP_SEL_INPUT_FORCE_COLOR 0xf
87 #define TVO_VIP_SEL_INPUT_BYPASS_MASK 0x1
88 #define TVO_VIP_SEL_INPUT_BYPASSED 1
89
90 #define TVO_SYNC_MAIN_VTG_SET_REF 0x00
91 #define TVO_SYNC_AUX_VTG_SET_REF 0x10
92
93 #define TVO_SYNC_HD_DCS_SHIFT 8
94
95 #define TVO_SYNC_DVO_PAD_HSYNC_SHIFT 8
96 #define TVO_SYNC_DVO_PAD_VSYNC_SHIFT 16
97
98 #define ENCODER_CRTC_MASK (BIT(0) | BIT(1))
99
100 #define TVO_MIN_HD_HEIGHT 720
101
102 /* enum listing the supported output data format */
103 enum sti_tvout_video_out_type {
104 STI_TVOUT_VIDEO_OUT_RGB,
105 STI_TVOUT_VIDEO_OUT_YUV,
106 };
107
108 struct sti_tvout {
109 struct device *dev;
110 struct drm_device *drm_dev;
111 void __iomem *regs;
112 struct reset_control *reset;
113 struct drm_encoder *hdmi;
114 struct drm_encoder *hda;
115 struct drm_encoder *dvo;
116 bool debugfs_registered;
117 };
118
119 struct sti_tvout_encoder {
120 struct drm_encoder encoder;
121 struct sti_tvout *tvout;
122 };
123
124 #define to_sti_tvout_encoder(x) \
125 container_of(x, struct sti_tvout_encoder, encoder)
126
127 #define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
128
129 /* preformatter conversion matrix */
130 static const u32 rgb_to_ycbcr_601[8] = {
131 0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
132 0x0000082E, 0x00002000, 0x00002000, 0x00000000
133 };
134
135 /* 709 RGB to YCbCr */
136 static const u32 rgb_to_ycbcr_709[8] = {
137 0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
138 0x0000082F, 0x00002000, 0x00002000, 0x00000000
139 };
140
tvout_read(struct sti_tvout * tvout,int offset)141 static u32 tvout_read(struct sti_tvout *tvout, int offset)
142 {
143 return readl(tvout->regs + offset);
144 }
145
tvout_write(struct sti_tvout * tvout,u32 val,int offset)146 static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
147 {
148 writel(val, tvout->regs + offset);
149 }
150
151 /**
152 * Set the clipping mode of a VIP
153 *
154 * @tvout: tvout structure
155 * @reg: register to set
156 * @cr_r:
157 * @y_g:
158 * @cb_b:
159 */
tvout_vip_set_color_order(struct sti_tvout * tvout,int reg,u32 cr_r,u32 y_g,u32 cb_b)160 static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
161 u32 cr_r, u32 y_g, u32 cb_b)
162 {
163 u32 val = tvout_read(tvout, reg);
164
165 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
166 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
167 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
168 val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
169 val |= y_g << TVO_VIP_REORDER_G_SHIFT;
170 val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
171
172 tvout_write(tvout, val, reg);
173 }
174
175 /**
176 * Set the clipping mode of a VIP
177 *
178 * @tvout: tvout structure
179 * @reg: register to set
180 * @range: clipping range
181 */
tvout_vip_set_clip_mode(struct sti_tvout * tvout,int reg,u32 range)182 static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
183 {
184 u32 val = tvout_read(tvout, reg);
185
186 val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
187 val |= range << TVO_VIP_CLIP_SHIFT;
188 tvout_write(tvout, val, reg);
189 }
190
191 /**
192 * Set the rounded value of a VIP
193 *
194 * @tvout: tvout structure
195 * @reg: register to set
196 * @rnd: rounded val per component
197 */
tvout_vip_set_rnd(struct sti_tvout * tvout,int reg,u32 rnd)198 static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
199 {
200 u32 val = tvout_read(tvout, reg);
201
202 val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
203 val |= rnd << TVO_VIP_RND_SHIFT;
204 tvout_write(tvout, val, reg);
205 }
206
207 /**
208 * Select the VIP input
209 *
210 * @tvout: tvout structure
211 * @reg: register to set
212 * @main_path: main or auxiliary path
213 * @sel_input: selected_input (main/aux + conv)
214 */
tvout_vip_set_sel_input(struct sti_tvout * tvout,int reg,bool main_path,enum sti_tvout_video_out_type video_out)215 static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
216 int reg,
217 bool main_path,
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 sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
239
240 val &= ~TVO_VIP_SEL_INPUT_MASK;
241 val |= sel_input;
242 tvout_write(tvout, val, reg);
243 }
244
245 /**
246 * Select the input video signed or unsigned
247 *
248 * @tvout: tvout structure
249 * @reg: register to set
250 * @in_vid_signed: used video input format
251 */
tvout_vip_set_in_vid_fmt(struct sti_tvout * tvout,int reg,u32 in_vid_fmt)252 static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
253 int reg, u32 in_vid_fmt)
254 {
255 u32 val = tvout_read(tvout, reg);
256
257 val &= ~TVO_IN_FMT_SIGNED;
258 val |= in_vid_fmt;
259 tvout_write(tvout, val, reg);
260 }
261
262 /**
263 * Set preformatter matrix
264 *
265 * @tvout: tvout structure
266 * @mode: display mode structure
267 */
tvout_preformatter_set_matrix(struct sti_tvout * tvout,struct drm_display_mode * mode)268 static void tvout_preformatter_set_matrix(struct sti_tvout *tvout,
269 struct drm_display_mode *mode)
270 {
271 unsigned int i;
272 const u32 *pf_matrix;
273
274 if (mode->vdisplay >= TVO_MIN_HD_HEIGHT)
275 pf_matrix = rgb_to_ycbcr_709;
276 else
277 pf_matrix = rgb_to_ycbcr_601;
278
279 for (i = 0; i < 8; i++) {
280 tvout_write(tvout, *(pf_matrix + i),
281 TVO_CSC_MAIN_M0 + (i * 4));
282 tvout_write(tvout, *(pf_matrix + i),
283 TVO_CSC_AUX_M0 + (i * 4));
284 }
285 }
286
287 /**
288 * Start VIP block for DVO output
289 *
290 * @tvout: pointer on tvout structure
291 * @main_path: true if main path has to be used in the vip configuration
292 * else aux path is used.
293 */
tvout_dvo_start(struct sti_tvout * tvout,bool main_path)294 static void tvout_dvo_start(struct sti_tvout *tvout, bool main_path)
295 {
296 u32 tvo_in_vid_format;
297 int val, tmp;
298
299 dev_dbg(tvout->dev, "%s\n", __func__);
300
301 if (main_path) {
302 DRM_DEBUG_DRIVER("main vip for DVO\n");
303 /* Select the input sync for dvo */
304 tmp = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_DVO;
305 val = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
306 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
307 val |= tmp;
308 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
309 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
310 } else {
311 DRM_DEBUG_DRIVER("aux vip for DVO\n");
312 /* Select the input sync for dvo */
313 tmp = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_DVO;
314 val = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
315 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
316 val |= tmp;
317 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
318 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
319 }
320
321 /* Set color channel order */
322 tvout_vip_set_color_order(tvout, TVO_VIP_DVO,
323 TVO_VIP_REORDER_CR_R_SEL,
324 TVO_VIP_REORDER_Y_G_SEL,
325 TVO_VIP_REORDER_CB_B_SEL);
326
327 /* Set clipping mode */
328 tvout_vip_set_clip_mode(tvout, TVO_VIP_DVO, TVO_VIP_CLIP_DISABLED);
329
330 /* Set round mode (rounded to 8-bit per component) */
331 tvout_vip_set_rnd(tvout, TVO_VIP_DVO, TVO_VIP_RND_8BIT_ROUNDED);
332
333 /* Set input video format */
334 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, TVO_IN_FMT_SIGNED);
335
336 /* Input selection */
337 tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path,
338 STI_TVOUT_VIDEO_OUT_RGB);
339 }
340
341 /**
342 * Start VIP block for HDMI output
343 *
344 * @tvout: pointer on tvout structure
345 * @main_path: true if main path has to be used in the vip configuration
346 * else aux path is used.
347 */
tvout_hdmi_start(struct sti_tvout * tvout,bool main_path)348 static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
349 {
350 u32 tvo_in_vid_format;
351
352 dev_dbg(tvout->dev, "%s\n", __func__);
353
354 if (main_path) {
355 DRM_DEBUG_DRIVER("main vip for hdmi\n");
356 /* select the input sync for hdmi */
357 tvout_write(tvout,
358 TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDMI,
359 TVO_HDMI_SYNC_SEL);
360 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
361 } else {
362 DRM_DEBUG_DRIVER("aux vip for hdmi\n");
363 /* select the input sync for hdmi */
364 tvout_write(tvout,
365 TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDMI,
366 TVO_HDMI_SYNC_SEL);
367 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
368 }
369
370 /* set color channel order */
371 tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
372 TVO_VIP_REORDER_CR_R_SEL,
373 TVO_VIP_REORDER_Y_G_SEL,
374 TVO_VIP_REORDER_CB_B_SEL);
375
376 /* set clipping mode */
377 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI, TVO_VIP_CLIP_DISABLED);
378
379 /* set round mode (rounded to 8-bit per component) */
380 tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED);
381
382 /* set input video format */
383 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, TVO_IN_FMT_SIGNED);
384
385 /* input selection */
386 tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path,
387 STI_TVOUT_VIDEO_OUT_RGB);
388 }
389
390 /**
391 * Start HDF VIP and HD DAC
392 *
393 * @tvout: pointer on tvout structure
394 * @main_path: true if main path has to be used in the vip configuration
395 * else aux path is used.
396 */
tvout_hda_start(struct sti_tvout * tvout,bool main_path)397 static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
398 {
399 u32 tvo_in_vid_format;
400 int val;
401
402 dev_dbg(tvout->dev, "%s\n", __func__);
403
404 if (main_path) {
405 DRM_DEBUG_DRIVER("main vip for HDF\n");
406 /* Select the input sync for HD analog and HD DCS */
407 val = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
408 val = val << TVO_SYNC_HD_DCS_SHIFT;
409 val |= TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDF;
410 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
411 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
412 } else {
413 DRM_DEBUG_DRIVER("aux vip for HDF\n");
414 /* Select the input sync for HD analog and HD DCS */
415 val = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
416 val = val << TVO_SYNC_HD_DCS_SHIFT;
417 val |= TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDF;
418 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
419 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
420 }
421
422 /* set color channel order */
423 tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
424 TVO_VIP_REORDER_CR_R_SEL,
425 TVO_VIP_REORDER_Y_G_SEL,
426 TVO_VIP_REORDER_CB_B_SEL);
427
428 /* set clipping mode */
429 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_DISABLED);
430
431 /* set round mode (rounded to 10-bit per component) */
432 tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
433
434 /* Set input video format */
435 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, TVO_IN_FMT_SIGNED);
436
437 /* Input selection */
438 tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
439 STI_TVOUT_VIDEO_OUT_YUV);
440
441 /* power up HD DAC */
442 tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
443 }
444
445 #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
446 readl(tvout->regs + reg))
447
tvout_dbg_vip(struct seq_file * s,int val)448 static void tvout_dbg_vip(struct seq_file *s, int val)
449 {
450 int r, g, b, tmp, mask;
451 char *const reorder[] = {"Y_G", "Cb_B", "Cr_R"};
452 char *const clipping[] = {"No", "EAV/SAV", "Limited range RGB/Y",
453 "Limited range Cb/Cr", "decided by register"};
454 char *const round[] = {"8-bit", "10-bit", "12-bit"};
455 char *const input_sel[] = {"Main (color matrix enabled)",
456 "Main (color matrix by-passed)",
457 "", "", "", "", "", "",
458 "Aux (color matrix enabled)",
459 "Aux (color matrix by-passed)",
460 "", "", "", "", "", "Force value"};
461
462 seq_putc(s, '\t');
463 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT;
464 r = (val & mask) >> TVO_VIP_REORDER_R_SHIFT;
465 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT;
466 g = (val & mask) >> TVO_VIP_REORDER_G_SHIFT;
467 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT;
468 b = (val & mask) >> TVO_VIP_REORDER_B_SHIFT;
469 seq_printf(s, "%-24s %s->%s %s->%s %s->%s\n", "Reorder:",
470 reorder[r], reorder[TVO_VIP_REORDER_CR_R_SEL],
471 reorder[g], reorder[TVO_VIP_REORDER_Y_G_SEL],
472 reorder[b], reorder[TVO_VIP_REORDER_CB_B_SEL]);
473 seq_puts(s, "\t\t\t\t\t");
474 mask = TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT;
475 tmp = (val & mask) >> TVO_VIP_CLIP_SHIFT;
476 seq_printf(s, "%-24s %s\n", "Clipping:", clipping[tmp]);
477 seq_puts(s, "\t\t\t\t\t");
478 mask = TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT;
479 tmp = (val & mask) >> TVO_VIP_RND_SHIFT;
480 seq_printf(s, "%-24s input data rounded to %s per component\n",
481 "Round:", round[tmp]);
482 seq_puts(s, "\t\t\t\t\t");
483 tmp = (val & TVO_VIP_SEL_INPUT_MASK);
484 seq_printf(s, "%-24s %s", "Input selection:", input_sel[tmp]);
485 }
486
tvout_dbg_hd_dac_cfg(struct seq_file * s,int val)487 static void tvout_dbg_hd_dac_cfg(struct seq_file *s, int val)
488 {
489 seq_printf(s, "\t%-24s %s", "HD DAC:",
490 val & 1 ? "disabled" : "enabled");
491 }
492
tvout_dbg_show(struct seq_file * s,void * data)493 static int tvout_dbg_show(struct seq_file *s, void *data)
494 {
495 struct drm_info_node *node = s->private;
496 struct sti_tvout *tvout = (struct sti_tvout *)node->info_ent->data;
497 struct drm_crtc *crtc;
498
499 seq_printf(s, "TVOUT: (vaddr = 0x%p)", tvout->regs);
500
501 seq_puts(s, "\n\n HDMI encoder: ");
502 crtc = tvout->hdmi->crtc;
503 if (crtc) {
504 seq_printf(s, "connected to %s path",
505 sti_crtc_is_main(crtc) ? "main" : "aux");
506 DBGFS_DUMP(TVO_HDMI_SYNC_SEL);
507 DBGFS_DUMP(TVO_VIP_HDMI);
508 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDMI));
509 } else {
510 seq_puts(s, "disabled");
511 }
512
513 seq_puts(s, "\n\n DVO encoder: ");
514 crtc = tvout->dvo->crtc;
515 if (crtc) {
516 seq_printf(s, "connected to %s path",
517 sti_crtc_is_main(crtc) ? "main" : "aux");
518 DBGFS_DUMP(TVO_DVO_SYNC_SEL);
519 DBGFS_DUMP(TVO_DVO_CONFIG);
520 DBGFS_DUMP(TVO_VIP_DVO);
521 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_DVO));
522 } else {
523 seq_puts(s, "disabled");
524 }
525
526 seq_puts(s, "\n\n HDA encoder: ");
527 crtc = tvout->hda->crtc;
528 if (crtc) {
529 seq_printf(s, "connected to %s path",
530 sti_crtc_is_main(crtc) ? "main" : "aux");
531 DBGFS_DUMP(TVO_HD_SYNC_SEL);
532 DBGFS_DUMP(TVO_HD_DAC_CFG_OFF);
533 tvout_dbg_hd_dac_cfg(s,
534 readl(tvout->regs + TVO_HD_DAC_CFG_OFF));
535 DBGFS_DUMP(TVO_VIP_HDF);
536 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDF));
537 } else {
538 seq_puts(s, "disabled");
539 }
540
541 seq_puts(s, "\n\n main path configuration");
542 DBGFS_DUMP(TVO_CSC_MAIN_M0);
543 DBGFS_DUMP(TVO_CSC_MAIN_M1);
544 DBGFS_DUMP(TVO_CSC_MAIN_M2);
545 DBGFS_DUMP(TVO_CSC_MAIN_M3);
546 DBGFS_DUMP(TVO_CSC_MAIN_M4);
547 DBGFS_DUMP(TVO_CSC_MAIN_M5);
548 DBGFS_DUMP(TVO_CSC_MAIN_M6);
549 DBGFS_DUMP(TVO_CSC_MAIN_M7);
550 DBGFS_DUMP(TVO_MAIN_IN_VID_FORMAT);
551
552 seq_puts(s, "\n\n auxiliary path configuration");
553 DBGFS_DUMP(TVO_CSC_AUX_M0);
554 DBGFS_DUMP(TVO_CSC_AUX_M2);
555 DBGFS_DUMP(TVO_CSC_AUX_M3);
556 DBGFS_DUMP(TVO_CSC_AUX_M4);
557 DBGFS_DUMP(TVO_CSC_AUX_M5);
558 DBGFS_DUMP(TVO_CSC_AUX_M6);
559 DBGFS_DUMP(TVO_CSC_AUX_M7);
560 DBGFS_DUMP(TVO_AUX_IN_VID_FORMAT);
561 seq_putc(s, '\n');
562 return 0;
563 }
564
565 static struct drm_info_list tvout_debugfs_files[] = {
566 { "tvout", tvout_dbg_show, 0, NULL },
567 };
568
tvout_debugfs_init(struct sti_tvout * tvout,struct drm_minor * minor)569 static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor)
570 {
571 unsigned int i;
572
573 for (i = 0; i < ARRAY_SIZE(tvout_debugfs_files); i++)
574 tvout_debugfs_files[i].data = tvout;
575
576 return drm_debugfs_create_files(tvout_debugfs_files,
577 ARRAY_SIZE(tvout_debugfs_files),
578 minor->debugfs_root, minor);
579 }
580
sti_tvout_encoder_dpms(struct drm_encoder * encoder,int mode)581 static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
582 {
583 }
584
sti_tvout_encoder_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)585 static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
586 struct drm_display_mode *mode,
587 struct drm_display_mode *adjusted_mode)
588 {
589 }
590
sti_tvout_encoder_destroy(struct drm_encoder * encoder)591 static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
592 {
593 struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
594
595 drm_encoder_cleanup(encoder);
596 kfree(sti_encoder);
597 }
598
sti_tvout_late_register(struct drm_encoder * encoder)599 static int sti_tvout_late_register(struct drm_encoder *encoder)
600 {
601 struct sti_tvout *tvout = to_sti_tvout(encoder);
602 int ret;
603
604 if (tvout->debugfs_registered)
605 return 0;
606
607 ret = tvout_debugfs_init(tvout, encoder->dev->primary);
608 if (ret)
609 return ret;
610
611 tvout->debugfs_registered = true;
612 return 0;
613 }
614
sti_tvout_early_unregister(struct drm_encoder * encoder)615 static void sti_tvout_early_unregister(struct drm_encoder *encoder)
616 {
617 struct sti_tvout *tvout = to_sti_tvout(encoder);
618
619 if (!tvout->debugfs_registered)
620 return;
621
622 tvout->debugfs_registered = false;
623 }
624
625 static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
626 .destroy = sti_tvout_encoder_destroy,
627 .late_register = sti_tvout_late_register,
628 .early_unregister = sti_tvout_early_unregister,
629 };
630
sti_dvo_encoder_enable(struct drm_encoder * encoder)631 static void sti_dvo_encoder_enable(struct drm_encoder *encoder)
632 {
633 struct sti_tvout *tvout = to_sti_tvout(encoder);
634
635 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
636
637 tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc));
638 }
639
sti_dvo_encoder_disable(struct drm_encoder * encoder)640 static void sti_dvo_encoder_disable(struct drm_encoder *encoder)
641 {
642 struct sti_tvout *tvout = to_sti_tvout(encoder);
643
644 /* Reset VIP register */
645 tvout_write(tvout, 0x0, TVO_VIP_DVO);
646 }
647
648 static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = {
649 .dpms = sti_tvout_encoder_dpms,
650 .mode_set = sti_tvout_encoder_mode_set,
651 .enable = sti_dvo_encoder_enable,
652 .disable = sti_dvo_encoder_disable,
653 };
654
655 static struct drm_encoder *
sti_tvout_create_dvo_encoder(struct drm_device * dev,struct sti_tvout * tvout)656 sti_tvout_create_dvo_encoder(struct drm_device *dev,
657 struct sti_tvout *tvout)
658 {
659 struct sti_tvout_encoder *encoder;
660 struct drm_encoder *drm_encoder;
661
662 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
663 if (!encoder)
664 return NULL;
665
666 encoder->tvout = tvout;
667
668 drm_encoder = (struct drm_encoder *)encoder;
669
670 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
671 drm_encoder->possible_clones = 1 << 0;
672
673 drm_encoder_init(dev, drm_encoder,
674 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS,
675 NULL);
676
677 drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs);
678
679 return drm_encoder;
680 }
681
sti_hda_encoder_enable(struct drm_encoder * encoder)682 static void sti_hda_encoder_enable(struct drm_encoder *encoder)
683 {
684 struct sti_tvout *tvout = to_sti_tvout(encoder);
685
686 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
687
688 tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc));
689 }
690
sti_hda_encoder_disable(struct drm_encoder * encoder)691 static void sti_hda_encoder_disable(struct drm_encoder *encoder)
692 {
693 struct sti_tvout *tvout = to_sti_tvout(encoder);
694
695 /* reset VIP register */
696 tvout_write(tvout, 0x0, TVO_VIP_HDF);
697
698 /* power down HD DAC */
699 tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
700 }
701
702 static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
703 .dpms = sti_tvout_encoder_dpms,
704 .mode_set = sti_tvout_encoder_mode_set,
705 .commit = sti_hda_encoder_enable,
706 .disable = sti_hda_encoder_disable,
707 };
708
sti_tvout_create_hda_encoder(struct drm_device * dev,struct sti_tvout * tvout)709 static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
710 struct sti_tvout *tvout)
711 {
712 struct sti_tvout_encoder *encoder;
713 struct drm_encoder *drm_encoder;
714
715 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
716 if (!encoder)
717 return NULL;
718
719 encoder->tvout = tvout;
720
721 drm_encoder = (struct drm_encoder *) encoder;
722
723 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
724 drm_encoder->possible_clones = 1 << 0;
725
726 drm_encoder_init(dev, drm_encoder,
727 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL);
728
729 drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
730
731 return drm_encoder;
732 }
733
sti_hdmi_encoder_enable(struct drm_encoder * encoder)734 static void sti_hdmi_encoder_enable(struct drm_encoder *encoder)
735 {
736 struct sti_tvout *tvout = to_sti_tvout(encoder);
737
738 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
739
740 tvout_hdmi_start(tvout, sti_crtc_is_main(encoder->crtc));
741 }
742
sti_hdmi_encoder_disable(struct drm_encoder * encoder)743 static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
744 {
745 struct sti_tvout *tvout = to_sti_tvout(encoder);
746
747 /* reset VIP register */
748 tvout_write(tvout, 0x0, TVO_VIP_HDMI);
749 }
750
751 static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
752 .dpms = sti_tvout_encoder_dpms,
753 .mode_set = sti_tvout_encoder_mode_set,
754 .commit = sti_hdmi_encoder_enable,
755 .disable = sti_hdmi_encoder_disable,
756 };
757
sti_tvout_create_hdmi_encoder(struct drm_device * dev,struct sti_tvout * tvout)758 static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
759 struct sti_tvout *tvout)
760 {
761 struct sti_tvout_encoder *encoder;
762 struct drm_encoder *drm_encoder;
763
764 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
765 if (!encoder)
766 return NULL;
767
768 encoder->tvout = tvout;
769
770 drm_encoder = (struct drm_encoder *) encoder;
771
772 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
773 drm_encoder->possible_clones = 1 << 1;
774
775 drm_encoder_init(dev, drm_encoder,
776 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL);
777
778 drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
779
780 return drm_encoder;
781 }
782
sti_tvout_create_encoders(struct drm_device * dev,struct sti_tvout * tvout)783 static void sti_tvout_create_encoders(struct drm_device *dev,
784 struct sti_tvout *tvout)
785 {
786 tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
787 tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
788 tvout->dvo = sti_tvout_create_dvo_encoder(dev, tvout);
789 }
790
sti_tvout_destroy_encoders(struct sti_tvout * tvout)791 static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
792 {
793 if (tvout->hdmi)
794 drm_encoder_cleanup(tvout->hdmi);
795 tvout->hdmi = NULL;
796
797 if (tvout->hda)
798 drm_encoder_cleanup(tvout->hda);
799 tvout->hda = NULL;
800
801 if (tvout->dvo)
802 drm_encoder_cleanup(tvout->dvo);
803 tvout->dvo = NULL;
804 }
805
sti_tvout_bind(struct device * dev,struct device * master,void * data)806 static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
807 {
808 struct sti_tvout *tvout = dev_get_drvdata(dev);
809 struct drm_device *drm_dev = data;
810
811 tvout->drm_dev = drm_dev;
812
813 sti_tvout_create_encoders(drm_dev, tvout);
814
815 return 0;
816 }
817
sti_tvout_unbind(struct device * dev,struct device * master,void * data)818 static void sti_tvout_unbind(struct device *dev, struct device *master,
819 void *data)
820 {
821 struct sti_tvout *tvout = dev_get_drvdata(dev);
822
823 sti_tvout_destroy_encoders(tvout);
824 }
825
826 static const struct component_ops sti_tvout_ops = {
827 .bind = sti_tvout_bind,
828 .unbind = sti_tvout_unbind,
829 };
830
sti_tvout_probe(struct platform_device * pdev)831 static int sti_tvout_probe(struct platform_device *pdev)
832 {
833 struct device *dev = &pdev->dev;
834 struct device_node *node = dev->of_node;
835 struct sti_tvout *tvout;
836 struct resource *res;
837
838 DRM_INFO("%s\n", __func__);
839
840 if (!node)
841 return -ENODEV;
842
843 tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
844 if (!tvout)
845 return -ENOMEM;
846
847 tvout->dev = dev;
848
849 /* get memory resources */
850 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
851 if (!res) {
852 DRM_ERROR("Invalid glue resource\n");
853 return -ENOMEM;
854 }
855 tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
856 if (!tvout->regs)
857 return -ENOMEM;
858
859 /* get reset resources */
860 tvout->reset = devm_reset_control_get(dev, "tvout");
861 /* take tvout out of reset */
862 if (!IS_ERR(tvout->reset))
863 reset_control_deassert(tvout->reset);
864
865 platform_set_drvdata(pdev, tvout);
866
867 return component_add(dev, &sti_tvout_ops);
868 }
869
sti_tvout_remove(struct platform_device * pdev)870 static int sti_tvout_remove(struct platform_device *pdev)
871 {
872 component_del(&pdev->dev, &sti_tvout_ops);
873 return 0;
874 }
875
876 static const struct of_device_id tvout_of_match[] = {
877 { .compatible = "st,stih407-tvout", },
878 { /* end node */ }
879 };
880 MODULE_DEVICE_TABLE(of, tvout_of_match);
881
882 struct platform_driver sti_tvout_driver = {
883 .driver = {
884 .name = "sti-tvout",
885 .owner = THIS_MODULE,
886 .of_match_table = tvout_of_match,
887 },
888 .probe = sti_tvout_probe,
889 .remove = sti_tvout_remove,
890 };
891
892 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
893 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
894 MODULE_LICENSE("GPL");
895
