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
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>
17 #include <drm/drm_crtc_helper.h>
19 #include "sti_drm_crtc.h"
22 #define TVO_CSC_MAIN_M0 0x000
23 #define TVO_CSC_MAIN_M1 0x004
24 #define TVO_CSC_MAIN_M2 0x008
25 #define TVO_CSC_MAIN_M3 0x00c
26 #define TVO_CSC_MAIN_M4 0x010
27 #define TVO_CSC_MAIN_M5 0x014
28 #define TVO_CSC_MAIN_M6 0x018
29 #define TVO_CSC_MAIN_M7 0x01c
30 #define TVO_MAIN_IN_VID_FORMAT 0x030
31 #define TVO_CSC_AUX_M0 0x100
32 #define TVO_CSC_AUX_M1 0x104
33 #define TVO_CSC_AUX_M2 0x108
34 #define TVO_CSC_AUX_M3 0x10c
35 #define TVO_CSC_AUX_M4 0x110
36 #define TVO_CSC_AUX_M5 0x114
37 #define TVO_CSC_AUX_M6 0x118
38 #define TVO_CSC_AUX_M7 0x11c
39 #define TVO_AUX_IN_VID_FORMAT 0x130
40 #define TVO_VIP_HDF 0x400
41 #define TVO_HD_SYNC_SEL 0x418
42 #define TVO_HD_DAC_CFG_OFF 0x420
43 #define TVO_VIP_HDMI 0x500
44 #define TVO_HDMI_FORCE_COLOR_0 0x504
45 #define TVO_HDMI_FORCE_COLOR_1 0x508
46 #define TVO_HDMI_CLIP_VALUE_B_CB 0x50c
47 #define TVO_HDMI_CLIP_VALUE_Y_G 0x510
48 #define TVO_HDMI_CLIP_VALUE_R_CR 0x514
49 #define TVO_HDMI_SYNC_SEL 0x518
50 #define TVO_HDMI_DFV_OBS 0x540
52 #define TVO_IN_FMT_SIGNED BIT(0)
53 #define TVO_SYNC_EXT BIT(4)
55 #define TVO_VIP_REORDER_R_SHIFT 24
56 #define TVO_VIP_REORDER_G_SHIFT 20
57 #define TVO_VIP_REORDER_B_SHIFT 16
58 #define TVO_VIP_REORDER_MASK 0x3
59 #define TVO_VIP_REORDER_Y_G_SEL 0
60 #define TVO_VIP_REORDER_CB_B_SEL 1
61 #define TVO_VIP_REORDER_CR_R_SEL 2
63 #define TVO_VIP_CLIP_SHIFT 8
64 #define TVO_VIP_CLIP_MASK 0x7
65 #define TVO_VIP_CLIP_DISABLED 0
66 #define TVO_VIP_CLIP_EAV_SAV 1
67 #define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
68 #define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
69 #define TVO_VIP_CLIP_PROG_RANGE 4
71 #define TVO_VIP_RND_SHIFT 4
72 #define TVO_VIP_RND_MASK 0x3
73 #define TVO_VIP_RND_8BIT_ROUNDED 0
74 #define TVO_VIP_RND_10BIT_ROUNDED 1
75 #define TVO_VIP_RND_12BIT_ROUNDED 2
77 #define TVO_VIP_SEL_INPUT_MASK 0xf
78 #define TVO_VIP_SEL_INPUT_MAIN 0x0
79 #define TVO_VIP_SEL_INPUT_AUX 0x8
80 #define TVO_VIP_SEL_INPUT_FORCE_COLOR 0xf
81 #define TVO_VIP_SEL_INPUT_BYPASS_MASK 0x1
82 #define TVO_VIP_SEL_INPUT_BYPASSED 1
84 #define TVO_SYNC_MAIN_VTG_SET_REF 0x00
85 #define TVO_SYNC_MAIN_VTG_SET_1 0x01
86 #define TVO_SYNC_MAIN_VTG_SET_2 0x02
87 #define TVO_SYNC_MAIN_VTG_SET_3 0x03
88 #define TVO_SYNC_MAIN_VTG_SET_4 0x04
89 #define TVO_SYNC_MAIN_VTG_SET_5 0x05
90 #define TVO_SYNC_MAIN_VTG_SET_6 0x06
91 #define TVO_SYNC_AUX_VTG_SET_REF 0x10
92 #define TVO_SYNC_AUX_VTG_SET_1 0x11
93 #define TVO_SYNC_AUX_VTG_SET_2 0x12
94 #define TVO_SYNC_AUX_VTG_SET_3 0x13
95 #define TVO_SYNC_AUX_VTG_SET_4 0x14
96 #define TVO_SYNC_AUX_VTG_SET_5 0x15
97 #define TVO_SYNC_AUX_VTG_SET_6 0x16
99 #define TVO_SYNC_HD_DCS_SHIFT 8
101 #define ENCODER_CRTC_MASK (BIT(0) | BIT(1))
103 /* enum listing the supported output data format */
104 enum sti_tvout_video_out_type {
105 STI_TVOUT_VIDEO_OUT_RGB,
106 STI_TVOUT_VIDEO_OUT_YUV,
111 struct drm_device *drm_dev;
113 struct reset_control *reset;
114 struct drm_encoder *hdmi;
115 struct drm_encoder *hda;
118 struct sti_tvout_encoder {
119 struct drm_encoder encoder;
120 struct sti_tvout *tvout;
123 #define to_sti_tvout_encoder(x) \
124 container_of(x, struct sti_tvout_encoder, encoder)
126 #define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
128 /* preformatter conversion matrix */
129 static const u32 rgb_to_ycbcr_601[8] = {
130 0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
131 0x0000082E, 0x00002000, 0x00002000, 0x00000000
134 /* 709 RGB to YCbCr */
135 static const u32 rgb_to_ycbcr_709[8] = {
136 0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
137 0x0000082F, 0x00002000, 0x00002000, 0x00000000
140 static u32 tvout_read(struct sti_tvout *tvout, int offset)
142 return readl(tvout->regs + offset);
145 static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
147 writel(val, tvout->regs + offset);
151 * Set the clipping mode of a VIP
153 * @tvout: tvout structure
154 * @reg: register to set
159 static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
160 u32 cr_r, u32 y_g, u32 cb_b)
162 u32 val = tvout_read(tvout, reg);
164 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
165 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
166 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
167 val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
168 val |= y_g << TVO_VIP_REORDER_G_SHIFT;
169 val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
171 tvout_write(tvout, val, reg);
175 * Set the clipping mode of a VIP
177 * @tvout: tvout structure
178 * @reg: register to set
179 * @range: clipping range
181 static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
183 u32 val = tvout_read(tvout, reg);
185 val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
186 val |= range << TVO_VIP_CLIP_SHIFT;
187 tvout_write(tvout, val, reg);
191 * Set the rounded value of a VIP
193 * @tvout: tvout structure
194 * @reg: register to set
195 * @rnd: rounded val per component
197 static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
199 u32 val = tvout_read(tvout, reg);
201 val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
202 val |= rnd << TVO_VIP_RND_SHIFT;
203 tvout_write(tvout, val, reg);
207 * Select the VIP input
209 * @tvout: tvout structure
210 * @reg: register to set
211 * @main_path: main or auxiliary path
212 * @sel_input_logic_inverted: need to invert the logic
213 * @sel_input: selected_input (main/aux + conv)
215 static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
218 bool sel_input_logic_inverted,
219 enum sti_tvout_video_out_type video_out)
222 u32 val = tvout_read(tvout, reg);
225 sel_input = TVO_VIP_SEL_INPUT_MAIN;
227 sel_input = TVO_VIP_SEL_INPUT_AUX;
230 case STI_TVOUT_VIDEO_OUT_RGB:
231 sel_input |= TVO_VIP_SEL_INPUT_BYPASSED;
233 case STI_TVOUT_VIDEO_OUT_YUV:
234 sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED;
238 /* on stih407 chip the sel_input bypass mode logic is inverted */
239 if (sel_input_logic_inverted)
240 sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
242 val &= ~TVO_VIP_SEL_INPUT_MASK;
244 tvout_write(tvout, val, reg);
248 * Select the input video signed or unsigned
250 * @tvout: tvout structure
251 * @reg: register to set
252 * @in_vid_signed: used video input format
254 static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
255 int reg, u32 in_vid_fmt)
257 u32 val = tvout_read(tvout, reg);
259 val &= ~TVO_IN_FMT_SIGNED;
261 tvout_write(tvout, val, reg);
265 * Start VIP block for HDMI output
267 * @tvout: pointer on tvout structure
268 * @main_path: true if main path has to be used in the vip configuration
269 * else aux path is used.
271 static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
273 struct device_node *node = tvout->dev->of_node;
274 bool sel_input_logic_inverted = false;
275 u32 tvo_in_vid_format;
277 dev_dbg(tvout->dev, "%s\n", __func__);
280 DRM_DEBUG_DRIVER("main vip for hdmi\n");
281 /* select the input sync for hdmi = VTG set 1 */
282 tvout_write(tvout, TVO_SYNC_MAIN_VTG_SET_1, TVO_HDMI_SYNC_SEL);
283 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
285 DRM_DEBUG_DRIVER("aux vip for hdmi\n");
286 /* select the input sync for hdmi = VTG set 1 */
287 tvout_write(tvout, TVO_SYNC_AUX_VTG_SET_1, TVO_HDMI_SYNC_SEL);
288 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
291 /* set color channel order */
292 tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
293 TVO_VIP_REORDER_CR_R_SEL,
294 TVO_VIP_REORDER_Y_G_SEL,
295 TVO_VIP_REORDER_CB_B_SEL);
297 /* set clipping mode (Limited range RGB/Y) */
298 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI,
299 TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y);
301 /* set round mode (rounded to 8-bit per component) */
302 tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED);
304 if (of_device_is_compatible(node, "st,stih407-tvout")) {
305 /* set input video format */
306 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
308 sel_input_logic_inverted = true;
311 /* input selection */
312 tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path,
313 sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB);
317 * Start HDF VIP and HD DAC
319 * @tvout: pointer on tvout structure
320 * @main_path: true if main path has to be used in the vip configuration
321 * else aux path is used.
323 static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
325 struct device_node *node = tvout->dev->of_node;
326 bool sel_input_logic_inverted = false;
327 u32 tvo_in_vid_format;
330 dev_dbg(tvout->dev, "%s\n", __func__);
333 val = TVO_SYNC_MAIN_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT;
334 val |= TVO_SYNC_MAIN_VTG_SET_3;
335 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
336 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
338 val = TVO_SYNC_AUX_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT;
339 val |= TVO_SYNC_AUX_VTG_SET_3;
340 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
341 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
344 /* set color channel order */
345 tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
346 TVO_VIP_REORDER_CR_R_SEL,
347 TVO_VIP_REORDER_Y_G_SEL,
348 TVO_VIP_REORDER_CB_B_SEL);
350 /* set clipping mode (EAV/SAV clipping) */
351 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_EAV_SAV);
353 /* set round mode (rounded to 10-bit per component) */
354 tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
356 if (of_device_is_compatible(node, "st,stih407-tvout")) {
357 /* set input video format */
358 tvout_vip_set_in_vid_fmt(tvout,
359 tvo_in_vid_format, TVO_IN_FMT_SIGNED);
360 sel_input_logic_inverted = true;
363 /* Input selection */
364 tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
365 sel_input_logic_inverted,
366 STI_TVOUT_VIDEO_OUT_YUV);
368 /* power up HD DAC */
369 tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
372 static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
376 static bool sti_tvout_encoder_mode_fixup(struct drm_encoder *encoder,
377 const struct drm_display_mode *mode,
378 struct drm_display_mode *adjusted_mode)
383 static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
384 struct drm_display_mode *mode,
385 struct drm_display_mode *adjusted_mode)
389 static void sti_tvout_encoder_prepare(struct drm_encoder *encoder)
393 static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
395 struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
397 drm_encoder_cleanup(encoder);
401 static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
402 .destroy = sti_tvout_encoder_destroy,
405 static void sti_hda_encoder_commit(struct drm_encoder *encoder)
407 struct sti_tvout *tvout = to_sti_tvout(encoder);
409 tvout_hda_start(tvout, sti_drm_crtc_is_main(encoder->crtc));
412 static void sti_hda_encoder_disable(struct drm_encoder *encoder)
414 struct sti_tvout *tvout = to_sti_tvout(encoder);
416 /* reset VIP register */
417 tvout_write(tvout, 0x0, TVO_VIP_HDF);
419 /* power down HD DAC */
420 tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
423 static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
424 .dpms = sti_tvout_encoder_dpms,
425 .mode_fixup = sti_tvout_encoder_mode_fixup,
426 .mode_set = sti_tvout_encoder_mode_set,
427 .prepare = sti_tvout_encoder_prepare,
428 .commit = sti_hda_encoder_commit,
429 .disable = sti_hda_encoder_disable,
432 static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
433 struct sti_tvout *tvout)
435 struct sti_tvout_encoder *encoder;
436 struct drm_encoder *drm_encoder;
438 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
442 encoder->tvout = tvout;
444 drm_encoder = (struct drm_encoder *) encoder;
446 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
447 drm_encoder->possible_clones = 1 << 0;
449 drm_encoder_init(dev, drm_encoder,
450 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC);
452 drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
457 static void sti_hdmi_encoder_commit(struct drm_encoder *encoder)
459 struct sti_tvout *tvout = to_sti_tvout(encoder);
461 tvout_hdmi_start(tvout, sti_drm_crtc_is_main(encoder->crtc));
464 static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
466 struct sti_tvout *tvout = to_sti_tvout(encoder);
468 /* reset VIP register */
469 tvout_write(tvout, 0x0, TVO_VIP_HDMI);
472 static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
473 .dpms = sti_tvout_encoder_dpms,
474 .mode_fixup = sti_tvout_encoder_mode_fixup,
475 .mode_set = sti_tvout_encoder_mode_set,
476 .prepare = sti_tvout_encoder_prepare,
477 .commit = sti_hdmi_encoder_commit,
478 .disable = sti_hdmi_encoder_disable,
481 static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
482 struct sti_tvout *tvout)
484 struct sti_tvout_encoder *encoder;
485 struct drm_encoder *drm_encoder;
487 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
491 encoder->tvout = tvout;
493 drm_encoder = (struct drm_encoder *) encoder;
495 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
496 drm_encoder->possible_clones = 1 << 1;
498 drm_encoder_init(dev, drm_encoder,
499 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS);
501 drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
506 static void sti_tvout_create_encoders(struct drm_device *dev,
507 struct sti_tvout *tvout)
509 tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
510 tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
513 static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
516 drm_encoder_cleanup(tvout->hdmi);
520 drm_encoder_cleanup(tvout->hda);
524 static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
526 struct sti_tvout *tvout = dev_get_drvdata(dev);
527 struct drm_device *drm_dev = data;
531 tvout->drm_dev = drm_dev;
533 /* set preformatter matrix */
534 for (i = 0; i < 8; i++) {
535 tvout_write(tvout, rgb_to_ycbcr_601[i],
536 TVO_CSC_MAIN_M0 + (i * 4));
537 tvout_write(tvout, rgb_to_ycbcr_601[i],
538 TVO_CSC_AUX_M0 + (i * 4));
541 sti_tvout_create_encoders(drm_dev, tvout);
543 ret = component_bind_all(dev, drm_dev);
545 sti_tvout_destroy_encoders(tvout);
550 static void sti_tvout_unbind(struct device *dev, struct device *master,
556 static const struct component_ops sti_tvout_ops = {
557 .bind = sti_tvout_bind,
558 .unbind = sti_tvout_unbind,
561 static int compare_of(struct device *dev, void *data)
563 return dev->of_node == data;
566 static int sti_tvout_master_bind(struct device *dev)
571 static void sti_tvout_master_unbind(struct device *dev)
576 static const struct component_master_ops sti_tvout_master_ops = {
577 .bind = sti_tvout_master_bind,
578 .unbind = sti_tvout_master_unbind,
581 static int sti_tvout_probe(struct platform_device *pdev)
583 struct device *dev = &pdev->dev;
584 struct device_node *node = dev->of_node;
585 struct sti_tvout *tvout;
586 struct resource *res;
587 struct device_node *child_np;
588 struct component_match *match = NULL;
590 DRM_INFO("%s\n", __func__);
595 tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
601 /* get Memory ressources */
602 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
604 DRM_ERROR("Invalid glue resource\n");
607 tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
611 /* get reset resources */
612 tvout->reset = devm_reset_control_get(dev, "tvout");
613 /* take tvout out of reset */
614 if (!IS_ERR(tvout->reset))
615 reset_control_deassert(tvout->reset);
617 platform_set_drvdata(pdev, tvout);
619 of_platform_populate(node, NULL, NULL, dev);
621 child_np = of_get_next_available_child(node, NULL);
624 component_match_add(dev, &match, compare_of, child_np);
625 of_node_put(child_np);
626 child_np = of_get_next_available_child(node, child_np);
629 component_master_add_with_match(dev, &sti_tvout_master_ops, match);
631 return component_add(dev, &sti_tvout_ops);
634 static int sti_tvout_remove(struct platform_device *pdev)
636 component_master_del(&pdev->dev, &sti_tvout_master_ops);
637 component_del(&pdev->dev, &sti_tvout_ops);
641 static const struct of_device_id tvout_of_match[] = {
642 { .compatible = "st,stih416-tvout", },
643 { .compatible = "st,stih407-tvout", },
646 MODULE_DEVICE_TABLE(of, tvout_of_match);
648 struct platform_driver sti_tvout_driver = {
651 .owner = THIS_MODULE,
652 .of_match_table = tvout_of_match,
654 .probe = sti_tvout_probe,
655 .remove = sti_tvout_remove,
658 module_platform_driver(sti_tvout_driver);
660 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
661 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
662 MODULE_LICENSE("GPL");