2 * Copyright (C) STMicroelectronics SA 2014
3 * Author: Vincent Abriou <vincent.abriou@st.com> for STMicroelectronics.
4 * License terms: GNU General Public License (GPL), version 2
8 #include <linux/component.h>
9 #include <linux/debugfs.h>
10 #include <linux/hdmi.h>
11 #include <linux/module.h>
12 #include <linux/of_gpio.h>
13 #include <linux/platform_device.h>
14 #include <linux/reset.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc_helper.h>
19 #include <drm/drm_edid.h>
21 #include <sound/hdmi-codec.h>
24 #include "sti_hdmi_tx3g4c28phy.h"
25 #include "sti_hdmi_tx3g0c55phy.h"
28 #define HDMI_CFG 0x0000
29 #define HDMI_INT_EN 0x0004
30 #define HDMI_INT_STA 0x0008
31 #define HDMI_INT_CLR 0x000C
32 #define HDMI_STA 0x0010
33 #define HDMI_ACTIVE_VID_XMIN 0x0100
34 #define HDMI_ACTIVE_VID_XMAX 0x0104
35 #define HDMI_ACTIVE_VID_YMIN 0x0108
36 #define HDMI_ACTIVE_VID_YMAX 0x010C
37 #define HDMI_DFLT_CHL0_DAT 0x0110
38 #define HDMI_DFLT_CHL1_DAT 0x0114
39 #define HDMI_DFLT_CHL2_DAT 0x0118
40 #define HDMI_AUDIO_CFG 0x0200
41 #define HDMI_SPDIF_FIFO_STATUS 0x0204
42 #define HDMI_SW_DI_1_HEAD_WORD 0x0210
43 #define HDMI_SW_DI_1_PKT_WORD0 0x0214
44 #define HDMI_SW_DI_1_PKT_WORD1 0x0218
45 #define HDMI_SW_DI_1_PKT_WORD2 0x021C
46 #define HDMI_SW_DI_1_PKT_WORD3 0x0220
47 #define HDMI_SW_DI_1_PKT_WORD4 0x0224
48 #define HDMI_SW_DI_1_PKT_WORD5 0x0228
49 #define HDMI_SW_DI_1_PKT_WORD6 0x022C
50 #define HDMI_SW_DI_CFG 0x0230
51 #define HDMI_SAMPLE_FLAT_MASK 0x0244
52 #define HDMI_AUDN 0x0400
53 #define HDMI_AUD_CTS 0x0404
54 #define HDMI_SW_DI_2_HEAD_WORD 0x0600
55 #define HDMI_SW_DI_2_PKT_WORD0 0x0604
56 #define HDMI_SW_DI_2_PKT_WORD1 0x0608
57 #define HDMI_SW_DI_2_PKT_WORD2 0x060C
58 #define HDMI_SW_DI_2_PKT_WORD3 0x0610
59 #define HDMI_SW_DI_2_PKT_WORD4 0x0614
60 #define HDMI_SW_DI_2_PKT_WORD5 0x0618
61 #define HDMI_SW_DI_2_PKT_WORD6 0x061C
62 #define HDMI_SW_DI_3_HEAD_WORD 0x0620
63 #define HDMI_SW_DI_3_PKT_WORD0 0x0624
64 #define HDMI_SW_DI_3_PKT_WORD1 0x0628
65 #define HDMI_SW_DI_3_PKT_WORD2 0x062C
66 #define HDMI_SW_DI_3_PKT_WORD3 0x0630
67 #define HDMI_SW_DI_3_PKT_WORD4 0x0634
68 #define HDMI_SW_DI_3_PKT_WORD5 0x0638
69 #define HDMI_SW_DI_3_PKT_WORD6 0x063C
71 #define HDMI_IFRAME_SLOT_AVI 1
72 #define HDMI_IFRAME_SLOT_AUDIO 2
73 #define HDMI_IFRAME_SLOT_VENDOR 3
75 #define XCAT(prefix, x, suffix) prefix ## x ## suffix
76 #define HDMI_SW_DI_N_HEAD_WORD(x) XCAT(HDMI_SW_DI_, x, _HEAD_WORD)
77 #define HDMI_SW_DI_N_PKT_WORD0(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD0)
78 #define HDMI_SW_DI_N_PKT_WORD1(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD1)
79 #define HDMI_SW_DI_N_PKT_WORD2(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD2)
80 #define HDMI_SW_DI_N_PKT_WORD3(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD3)
81 #define HDMI_SW_DI_N_PKT_WORD4(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD4)
82 #define HDMI_SW_DI_N_PKT_WORD5(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD5)
83 #define HDMI_SW_DI_N_PKT_WORD6(x) XCAT(HDMI_SW_DI_, x, _PKT_WORD6)
85 #define HDMI_SW_DI_MAX_WORD 7
87 #define HDMI_IFRAME_DISABLED 0x0
88 #define HDMI_IFRAME_SINGLE_SHOT 0x1
89 #define HDMI_IFRAME_FIELD 0x2
90 #define HDMI_IFRAME_FRAME 0x3
91 #define HDMI_IFRAME_MASK 0x3
92 #define HDMI_IFRAME_CFG_DI_N(x, n) ((x) << ((n-1)*4)) /* n from 1 to 6 */
94 #define HDMI_CFG_DEVICE_EN BIT(0)
95 #define HDMI_CFG_HDMI_NOT_DVI BIT(1)
96 #define HDMI_CFG_HDCP_EN BIT(2)
97 #define HDMI_CFG_ESS_NOT_OESS BIT(3)
98 #define HDMI_CFG_H_SYNC_POL_NEG BIT(4)
99 #define HDMI_CFG_SINK_TERM_DET_EN BIT(5)
100 #define HDMI_CFG_V_SYNC_POL_NEG BIT(6)
101 #define HDMI_CFG_422_EN BIT(8)
102 #define HDMI_CFG_FIFO_OVERRUN_CLR BIT(12)
103 #define HDMI_CFG_FIFO_UNDERRUN_CLR BIT(13)
104 #define HDMI_CFG_SW_RST_EN BIT(31)
106 #define HDMI_INT_GLOBAL BIT(0)
107 #define HDMI_INT_SW_RST BIT(1)
108 #define HDMI_INT_PIX_CAP BIT(3)
109 #define HDMI_INT_HOT_PLUG BIT(4)
110 #define HDMI_INT_DLL_LCK BIT(5)
111 #define HDMI_INT_NEW_FRAME BIT(6)
112 #define HDMI_INT_GENCTRL_PKT BIT(7)
113 #define HDMI_INT_AUDIO_FIFO_XRUN BIT(8)
114 #define HDMI_INT_SINK_TERM_PRESENT BIT(11)
116 #define HDMI_DEFAULT_INT (HDMI_INT_SINK_TERM_PRESENT \
118 | HDMI_INT_HOT_PLUG \
121 #define HDMI_WORKING_INT (HDMI_INT_SINK_TERM_PRESENT \
122 | HDMI_INT_AUDIO_FIFO_XRUN \
123 | HDMI_INT_GENCTRL_PKT \
124 | HDMI_INT_NEW_FRAME \
126 | HDMI_INT_HOT_PLUG \
131 #define HDMI_STA_SW_RST BIT(1)
133 #define HDMI_AUD_CFG_8CH BIT(0)
134 #define HDMI_AUD_CFG_SPDIF_DIV_2 BIT(1)
135 #define HDMI_AUD_CFG_SPDIF_DIV_3 BIT(2)
136 #define HDMI_AUD_CFG_SPDIF_CLK_DIV_4 (BIT(1) | BIT(2))
137 #define HDMI_AUD_CFG_CTS_CLK_256FS BIT(12)
138 #define HDMI_AUD_CFG_DTS_INVALID BIT(16)
139 #define HDMI_AUD_CFG_ONE_BIT_INVALID (BIT(18) | BIT(19) | BIT(20) | BIT(21))
140 #define HDMI_AUD_CFG_CH12_VALID BIT(28)
141 #define HDMI_AUD_CFG_CH34_VALID BIT(29)
142 #define HDMI_AUD_CFG_CH56_VALID BIT(30)
143 #define HDMI_AUD_CFG_CH78_VALID BIT(31)
145 /* sample flat mask */
146 #define HDMI_SAMPLE_FLAT_NO 0
147 #define HDMI_SAMPLE_FLAT_SP0 BIT(0)
148 #define HDMI_SAMPLE_FLAT_SP1 BIT(1)
149 #define HDMI_SAMPLE_FLAT_SP2 BIT(2)
150 #define HDMI_SAMPLE_FLAT_SP3 BIT(3)
151 #define HDMI_SAMPLE_FLAT_ALL (HDMI_SAMPLE_FLAT_SP0 | HDMI_SAMPLE_FLAT_SP1 |\
152 HDMI_SAMPLE_FLAT_SP2 | HDMI_SAMPLE_FLAT_SP3)
154 #define HDMI_INFOFRAME_HEADER_TYPE(x) (((x) & 0xff) << 0)
155 #define HDMI_INFOFRAME_HEADER_VERSION(x) (((x) & 0xff) << 8)
156 #define HDMI_INFOFRAME_HEADER_LEN(x) (((x) & 0x0f) << 16)
158 struct sti_hdmi_connector {
159 struct drm_connector drm_connector;
160 struct drm_encoder *encoder;
161 struct sti_hdmi *hdmi;
162 struct drm_property *colorspace_property;
163 struct drm_property *hdmi_mode_property;
166 #define to_sti_hdmi_connector(x) \
167 container_of(x, struct sti_hdmi_connector, drm_connector)
169 u32 hdmi_read(struct sti_hdmi *hdmi, int offset)
171 return readl(hdmi->regs + offset);
174 void hdmi_write(struct sti_hdmi *hdmi, u32 val, int offset)
176 writel(val, hdmi->regs + offset);
180 * HDMI interrupt handler threaded
183 * @arg: connector structure
185 static irqreturn_t hdmi_irq_thread(int irq, void *arg)
187 struct sti_hdmi *hdmi = arg;
189 /* Hot plug/unplug IRQ */
190 if (hdmi->irq_status & HDMI_INT_HOT_PLUG) {
191 hdmi->hpd = readl(hdmi->regs + HDMI_STA) & HDMI_STA_HOT_PLUG;
193 drm_helper_hpd_irq_event(hdmi->drm_dev);
196 /* Sw reset and PLL lock are exclusive so we can use the same
197 * event to signal them
199 if (hdmi->irq_status & (HDMI_INT_SW_RST | HDMI_INT_DLL_LCK)) {
200 hdmi->event_received = true;
201 wake_up_interruptible(&hdmi->wait_event);
204 /* Audio FIFO underrun IRQ */
205 if (hdmi->irq_status & HDMI_INT_AUDIO_FIFO_XRUN)
206 DRM_INFO("Warning: audio FIFO underrun occurs!");
212 * HDMI interrupt handler
215 * @arg: connector structure
217 static irqreturn_t hdmi_irq(int irq, void *arg)
219 struct sti_hdmi *hdmi = arg;
221 /* read interrupt status */
222 hdmi->irq_status = hdmi_read(hdmi, HDMI_INT_STA);
224 /* clear interrupt status */
225 hdmi_write(hdmi, hdmi->irq_status, HDMI_INT_CLR);
227 /* force sync bus write */
228 hdmi_read(hdmi, HDMI_INT_STA);
230 return IRQ_WAKE_THREAD;
234 * Set hdmi active area depending on the drm display mode selected
236 * @hdmi: pointer on the hdmi internal structure
238 static void hdmi_active_area(struct sti_hdmi *hdmi)
243 xmin = sti_vtg_get_pixel_number(hdmi->mode, 1);
244 xmax = sti_vtg_get_pixel_number(hdmi->mode, hdmi->mode.hdisplay);
245 ymin = sti_vtg_get_line_number(hdmi->mode, 0);
246 ymax = sti_vtg_get_line_number(hdmi->mode, hdmi->mode.vdisplay - 1);
248 hdmi_write(hdmi, xmin, HDMI_ACTIVE_VID_XMIN);
249 hdmi_write(hdmi, xmax, HDMI_ACTIVE_VID_XMAX);
250 hdmi_write(hdmi, ymin, HDMI_ACTIVE_VID_YMIN);
251 hdmi_write(hdmi, ymax, HDMI_ACTIVE_VID_YMAX);
255 * Overall hdmi configuration
257 * @hdmi: pointer on the hdmi internal structure
259 static void hdmi_config(struct sti_hdmi *hdmi)
263 DRM_DEBUG_DRIVER("\n");
265 /* Clear overrun and underrun fifo */
266 conf = HDMI_CFG_FIFO_OVERRUN_CLR | HDMI_CFG_FIFO_UNDERRUN_CLR;
268 /* Select encryption type and the framing mode */
269 conf |= HDMI_CFG_ESS_NOT_OESS;
270 if (hdmi->hdmi_mode == HDMI_MODE_HDMI)
271 conf |= HDMI_CFG_HDMI_NOT_DVI;
273 /* Enable sink term detection */
274 conf |= HDMI_CFG_SINK_TERM_DET_EN;
276 /* Set Hsync polarity */
277 if (hdmi->mode.flags & DRM_MODE_FLAG_NHSYNC) {
278 DRM_DEBUG_DRIVER("H Sync Negative\n");
279 conf |= HDMI_CFG_H_SYNC_POL_NEG;
282 /* Set Vsync polarity */
283 if (hdmi->mode.flags & DRM_MODE_FLAG_NVSYNC) {
284 DRM_DEBUG_DRIVER("V Sync Negative\n");
285 conf |= HDMI_CFG_V_SYNC_POL_NEG;
289 conf |= HDMI_CFG_DEVICE_EN;
291 hdmi_write(hdmi, conf, HDMI_CFG);
295 * Helper to reset info frame
297 * @hdmi: pointer on the hdmi internal structure
298 * @slot: infoframe to reset
300 static void hdmi_infoframe_reset(struct sti_hdmi *hdmi,
304 u32 head_offset, pack_offset;
307 case HDMI_IFRAME_SLOT_AVI:
308 head_offset = HDMI_SW_DI_N_HEAD_WORD(HDMI_IFRAME_SLOT_AVI);
309 pack_offset = HDMI_SW_DI_N_PKT_WORD0(HDMI_IFRAME_SLOT_AVI);
311 case HDMI_IFRAME_SLOT_AUDIO:
312 head_offset = HDMI_SW_DI_N_HEAD_WORD(HDMI_IFRAME_SLOT_AUDIO);
313 pack_offset = HDMI_SW_DI_N_PKT_WORD0(HDMI_IFRAME_SLOT_AUDIO);
315 case HDMI_IFRAME_SLOT_VENDOR:
316 head_offset = HDMI_SW_DI_N_HEAD_WORD(HDMI_IFRAME_SLOT_VENDOR);
317 pack_offset = HDMI_SW_DI_N_PKT_WORD0(HDMI_IFRAME_SLOT_VENDOR);
320 DRM_ERROR("unsupported infoframe slot: %#x\n", slot);
324 /* Disable transmission for the selected slot */
325 val = hdmi_read(hdmi, HDMI_SW_DI_CFG);
326 val &= ~HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, slot);
327 hdmi_write(hdmi, val, HDMI_SW_DI_CFG);
329 /* Reset info frame registers */
330 hdmi_write(hdmi, 0x0, head_offset);
331 for (i = 0; i < HDMI_SW_DI_MAX_WORD; i += sizeof(u32))
332 hdmi_write(hdmi, 0x0, pack_offset + i);
336 * Helper to concatenate infoframe in 32 bits word
338 * @ptr: pointer on the hdmi internal structure
339 * @data: infoframe to write
340 * @size: size to write
342 static inline unsigned int hdmi_infoframe_subpack(const u8 *ptr, size_t size)
344 unsigned long value = 0;
347 for (i = size; i > 0; i--)
348 value = (value << 8) | ptr[i - 1];
354 * Helper to write info frame
356 * @hdmi: pointer on the hdmi internal structure
357 * @data: infoframe to write
358 * @size: size to write
360 static void hdmi_infoframe_write_infopack(struct sti_hdmi *hdmi,
364 const u8 *ptr = data;
365 u32 val, slot, mode, i;
366 u32 head_offset, pack_offset;
369 case HDMI_INFOFRAME_TYPE_AVI:
370 slot = HDMI_IFRAME_SLOT_AVI;
371 mode = HDMI_IFRAME_FIELD;
372 head_offset = HDMI_SW_DI_N_HEAD_WORD(HDMI_IFRAME_SLOT_AVI);
373 pack_offset = HDMI_SW_DI_N_PKT_WORD0(HDMI_IFRAME_SLOT_AVI);
375 case HDMI_INFOFRAME_TYPE_AUDIO:
376 slot = HDMI_IFRAME_SLOT_AUDIO;
377 mode = HDMI_IFRAME_FRAME;
378 head_offset = HDMI_SW_DI_N_HEAD_WORD(HDMI_IFRAME_SLOT_AUDIO);
379 pack_offset = HDMI_SW_DI_N_PKT_WORD0(HDMI_IFRAME_SLOT_AUDIO);
381 case HDMI_INFOFRAME_TYPE_VENDOR:
382 slot = HDMI_IFRAME_SLOT_VENDOR;
383 mode = HDMI_IFRAME_FRAME;
384 head_offset = HDMI_SW_DI_N_HEAD_WORD(HDMI_IFRAME_SLOT_VENDOR);
385 pack_offset = HDMI_SW_DI_N_PKT_WORD0(HDMI_IFRAME_SLOT_VENDOR);
388 DRM_ERROR("unsupported infoframe type: %#x\n", *ptr);
392 /* Disable transmission slot for updated infoframe */
393 val = hdmi_read(hdmi, HDMI_SW_DI_CFG);
394 val &= ~HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, slot);
395 hdmi_write(hdmi, val, HDMI_SW_DI_CFG);
397 val = HDMI_INFOFRAME_HEADER_TYPE(*ptr++);
398 val |= HDMI_INFOFRAME_HEADER_VERSION(*ptr++);
399 val |= HDMI_INFOFRAME_HEADER_LEN(*ptr++);
400 writel(val, hdmi->regs + head_offset);
403 * Each subpack contains 4 bytes
404 * The First Bytes of the first subpacket must contain the checksum
405 * Packet size is increase by one.
407 size = size - HDMI_INFOFRAME_HEADER_SIZE + 1;
408 for (i = 0; i < size; i += sizeof(u32)) {
411 num = min_t(size_t, size - i, sizeof(u32));
412 val = hdmi_infoframe_subpack(ptr, num);
414 writel(val, hdmi->regs + pack_offset + i);
417 /* Enable transmission slot for updated infoframe */
418 val = hdmi_read(hdmi, HDMI_SW_DI_CFG);
419 val |= HDMI_IFRAME_CFG_DI_N(mode, slot);
420 hdmi_write(hdmi, val, HDMI_SW_DI_CFG);
424 * Prepare and configure the AVI infoframe
426 * AVI infoframe are transmitted at least once per two video field and
427 * contains information about HDMI transmission mode such as color space,
430 * @hdmi: pointer on the hdmi internal structure
432 * Return negative value if error occurs
434 static int hdmi_avi_infoframe_config(struct sti_hdmi *hdmi)
436 struct drm_display_mode *mode = &hdmi->mode;
437 struct hdmi_avi_infoframe infoframe;
438 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
441 DRM_DEBUG_DRIVER("\n");
443 ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe, mode);
445 DRM_ERROR("failed to setup AVI infoframe: %d\n", ret);
449 /* fixed infoframe configuration not linked to the mode */
450 infoframe.colorspace = hdmi->colorspace;
451 infoframe.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
452 infoframe.colorimetry = HDMI_COLORIMETRY_NONE;
454 ret = hdmi_avi_infoframe_pack(&infoframe, buffer, sizeof(buffer));
456 DRM_ERROR("failed to pack AVI infoframe: %d\n", ret);
460 hdmi_infoframe_write_infopack(hdmi, buffer, ret);
466 * Prepare and configure the AUDIO infoframe
468 * AUDIO infoframe are transmitted once per frame and
469 * contains information about HDMI transmission mode such as audio codec,
472 * @hdmi: pointer on the hdmi internal structure
474 * Return negative value if error occurs
476 static int hdmi_audio_infoframe_config(struct sti_hdmi *hdmi)
478 struct hdmi_audio_params *audio = &hdmi->audio;
479 u8 buffer[HDMI_INFOFRAME_SIZE(AUDIO)];
482 DRM_DEBUG_DRIVER("enter %s, AIF %s\n", __func__,
483 audio->enabled ? "enable" : "disable");
484 if (audio->enabled) {
485 /* set audio parameters stored*/
486 ret = hdmi_audio_infoframe_pack(&audio->cea, buffer,
489 DRM_ERROR("failed to pack audio infoframe: %d\n", ret);
492 hdmi_infoframe_write_infopack(hdmi, buffer, ret);
494 /*disable audio info frame transmission */
495 val = hdmi_read(hdmi, HDMI_SW_DI_CFG);
496 val &= ~HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK,
497 HDMI_IFRAME_SLOT_AUDIO);
498 hdmi_write(hdmi, val, HDMI_SW_DI_CFG);
505 * Prepare and configure the VS infoframe
507 * Vendor Specific infoframe are transmitted once per frame and
508 * contains vendor specific information.
510 * @hdmi: pointer on the hdmi internal structure
512 * Return negative value if error occurs
514 #define HDMI_VENDOR_INFOFRAME_MAX_SIZE 6
515 static int hdmi_vendor_infoframe_config(struct sti_hdmi *hdmi)
517 struct drm_display_mode *mode = &hdmi->mode;
518 struct hdmi_vendor_infoframe infoframe;
519 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_VENDOR_INFOFRAME_MAX_SIZE];
522 DRM_DEBUG_DRIVER("\n");
524 ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe, mode);
527 * Going into that statement does not means vendor infoframe
528 * fails. It just informed us that vendor infoframe is not
529 * needed for the selected mode. Only 4k or stereoscopic 3D
530 * mode requires vendor infoframe. So just simply return 0.
535 ret = hdmi_vendor_infoframe_pack(&infoframe, buffer, sizeof(buffer));
537 DRM_ERROR("failed to pack VS infoframe: %d\n", ret);
541 hdmi_infoframe_write_infopack(hdmi, buffer, ret);
547 * Software reset of the hdmi subsystem
549 * @hdmi: pointer on the hdmi internal structure
552 #define HDMI_TIMEOUT_SWRESET 100 /*milliseconds */
553 static void hdmi_swreset(struct sti_hdmi *hdmi)
557 DRM_DEBUG_DRIVER("\n");
559 /* Enable hdmi_audio clock only during hdmi reset */
560 if (clk_prepare_enable(hdmi->clk_audio))
561 DRM_INFO("Failed to prepare/enable hdmi_audio clk\n");
564 hdmi->event_received = false;
566 val = hdmi_read(hdmi, HDMI_CFG);
567 val |= HDMI_CFG_SW_RST_EN;
568 hdmi_write(hdmi, val, HDMI_CFG);
570 /* Wait reset completed */
571 wait_event_interruptible_timeout(hdmi->wait_event,
572 hdmi->event_received == true,
574 (HDMI_TIMEOUT_SWRESET));
577 * HDMI_STA_SW_RST bit is set to '1' when SW_RST bit in HDMI_CFG is
578 * set to '1' and clk_audio is running.
580 if ((hdmi_read(hdmi, HDMI_STA) & HDMI_STA_SW_RST) == 0)
581 DRM_DEBUG_DRIVER("Warning: HDMI sw reset timeout occurs\n");
583 val = hdmi_read(hdmi, HDMI_CFG);
584 val &= ~HDMI_CFG_SW_RST_EN;
585 hdmi_write(hdmi, val, HDMI_CFG);
587 /* Disable hdmi_audio clock. Not used anymore for drm purpose */
588 clk_disable_unprepare(hdmi->clk_audio);
591 #define DBGFS_PRINT_STR(str1, str2) seq_printf(s, "%-24s %s\n", str1, str2)
592 #define DBGFS_PRINT_INT(str1, int2) seq_printf(s, "%-24s %d\n", str1, int2)
593 #define DBGFS_DUMP(str, reg) seq_printf(s, "%s %-25s 0x%08X", str, #reg, \
594 hdmi_read(hdmi, reg))
595 #define DBGFS_DUMP_DI(reg, slot) DBGFS_DUMP("\n", reg(slot))
597 static void hdmi_dbg_cfg(struct seq_file *s, int val)
602 tmp = val & HDMI_CFG_HDMI_NOT_DVI;
603 DBGFS_PRINT_STR("mode:", tmp ? "HDMI" : "DVI");
604 seq_puts(s, "\t\t\t\t\t");
605 tmp = val & HDMI_CFG_HDCP_EN;
606 DBGFS_PRINT_STR("HDCP:", tmp ? "enable" : "disable");
607 seq_puts(s, "\t\t\t\t\t");
608 tmp = val & HDMI_CFG_ESS_NOT_OESS;
609 DBGFS_PRINT_STR("HDCP mode:", tmp ? "ESS enable" : "OESS enable");
610 seq_puts(s, "\t\t\t\t\t");
611 tmp = val & HDMI_CFG_SINK_TERM_DET_EN;
612 DBGFS_PRINT_STR("Sink term detection:", tmp ? "enable" : "disable");
613 seq_puts(s, "\t\t\t\t\t");
614 tmp = val & HDMI_CFG_H_SYNC_POL_NEG;
615 DBGFS_PRINT_STR("Hsync polarity:", tmp ? "inverted" : "normal");
616 seq_puts(s, "\t\t\t\t\t");
617 tmp = val & HDMI_CFG_V_SYNC_POL_NEG;
618 DBGFS_PRINT_STR("Vsync polarity:", tmp ? "inverted" : "normal");
619 seq_puts(s, "\t\t\t\t\t");
620 tmp = val & HDMI_CFG_422_EN;
621 DBGFS_PRINT_STR("YUV422 format:", tmp ? "enable" : "disable");
624 static void hdmi_dbg_sta(struct seq_file *s, int val)
629 tmp = (val & HDMI_STA_DLL_LCK);
630 DBGFS_PRINT_STR("pll:", tmp ? "locked" : "not locked");
631 seq_puts(s, "\t\t\t\t\t");
632 tmp = (val & HDMI_STA_HOT_PLUG);
633 DBGFS_PRINT_STR("hdmi cable:", tmp ? "connected" : "not connected");
636 static void hdmi_dbg_sw_di_cfg(struct seq_file *s, int val)
639 char *const en_di[] = {"no transmission",
640 "single transmission",
645 tmp = (val & HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, 1));
646 DBGFS_PRINT_STR("Data island 1:", en_di[tmp]);
647 seq_puts(s, "\t\t\t\t\t");
648 tmp = (val & HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, 2)) >> 4;
649 DBGFS_PRINT_STR("Data island 2:", en_di[tmp]);
650 seq_puts(s, "\t\t\t\t\t");
651 tmp = (val & HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, 3)) >> 8;
652 DBGFS_PRINT_STR("Data island 3:", en_di[tmp]);
653 seq_puts(s, "\t\t\t\t\t");
654 tmp = (val & HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, 4)) >> 12;
655 DBGFS_PRINT_STR("Data island 4:", en_di[tmp]);
656 seq_puts(s, "\t\t\t\t\t");
657 tmp = (val & HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, 5)) >> 16;
658 DBGFS_PRINT_STR("Data island 5:", en_di[tmp]);
659 seq_puts(s, "\t\t\t\t\t");
660 tmp = (val & HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, 6)) >> 20;
661 DBGFS_PRINT_STR("Data island 6:", en_di[tmp]);
664 static int hdmi_dbg_show(struct seq_file *s, void *data)
666 struct drm_info_node *node = s->private;
667 struct sti_hdmi *hdmi = (struct sti_hdmi *)node->info_ent->data;
669 seq_printf(s, "HDMI: (vaddr = 0x%p)", hdmi->regs);
670 DBGFS_DUMP("\n", HDMI_CFG);
671 hdmi_dbg_cfg(s, hdmi_read(hdmi, HDMI_CFG));
672 DBGFS_DUMP("", HDMI_INT_EN);
673 DBGFS_DUMP("\n", HDMI_STA);
674 hdmi_dbg_sta(s, hdmi_read(hdmi, HDMI_STA));
675 DBGFS_DUMP("", HDMI_ACTIVE_VID_XMIN);
677 DBGFS_PRINT_INT("Xmin:", hdmi_read(hdmi, HDMI_ACTIVE_VID_XMIN));
678 DBGFS_DUMP("", HDMI_ACTIVE_VID_XMAX);
680 DBGFS_PRINT_INT("Xmax:", hdmi_read(hdmi, HDMI_ACTIVE_VID_XMAX));
681 DBGFS_DUMP("", HDMI_ACTIVE_VID_YMIN);
683 DBGFS_PRINT_INT("Ymin:", hdmi_read(hdmi, HDMI_ACTIVE_VID_YMIN));
684 DBGFS_DUMP("", HDMI_ACTIVE_VID_YMAX);
686 DBGFS_PRINT_INT("Ymax:", hdmi_read(hdmi, HDMI_ACTIVE_VID_YMAX));
687 DBGFS_DUMP("", HDMI_SW_DI_CFG);
688 hdmi_dbg_sw_di_cfg(s, hdmi_read(hdmi, HDMI_SW_DI_CFG));
690 DBGFS_DUMP("\n", HDMI_AUDIO_CFG);
691 DBGFS_DUMP("\n", HDMI_SPDIF_FIFO_STATUS);
692 DBGFS_DUMP("\n", HDMI_AUDN);
694 seq_printf(s, "\n AVI Infoframe (Data Island slot N=%d):",
695 HDMI_IFRAME_SLOT_AVI);
696 DBGFS_DUMP_DI(HDMI_SW_DI_N_HEAD_WORD, HDMI_IFRAME_SLOT_AVI);
697 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD0, HDMI_IFRAME_SLOT_AVI);
698 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD1, HDMI_IFRAME_SLOT_AVI);
699 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD2, HDMI_IFRAME_SLOT_AVI);
700 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD3, HDMI_IFRAME_SLOT_AVI);
701 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD4, HDMI_IFRAME_SLOT_AVI);
702 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD5, HDMI_IFRAME_SLOT_AVI);
703 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD6, HDMI_IFRAME_SLOT_AVI);
705 seq_printf(s, "\n AUDIO Infoframe (Data Island slot N=%d):",
706 HDMI_IFRAME_SLOT_AUDIO);
707 DBGFS_DUMP_DI(HDMI_SW_DI_N_HEAD_WORD, HDMI_IFRAME_SLOT_AUDIO);
708 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD0, HDMI_IFRAME_SLOT_AUDIO);
709 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD1, HDMI_IFRAME_SLOT_AUDIO);
710 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD2, HDMI_IFRAME_SLOT_AUDIO);
711 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD3, HDMI_IFRAME_SLOT_AUDIO);
712 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD4, HDMI_IFRAME_SLOT_AUDIO);
713 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD5, HDMI_IFRAME_SLOT_AUDIO);
714 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD6, HDMI_IFRAME_SLOT_AUDIO);
716 seq_printf(s, "\n VENDOR SPECIFIC Infoframe (Data Island slot N=%d):",
717 HDMI_IFRAME_SLOT_VENDOR);
718 DBGFS_DUMP_DI(HDMI_SW_DI_N_HEAD_WORD, HDMI_IFRAME_SLOT_VENDOR);
719 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD0, HDMI_IFRAME_SLOT_VENDOR);
720 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD1, HDMI_IFRAME_SLOT_VENDOR);
721 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD2, HDMI_IFRAME_SLOT_VENDOR);
722 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD3, HDMI_IFRAME_SLOT_VENDOR);
723 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD4, HDMI_IFRAME_SLOT_VENDOR);
724 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD5, HDMI_IFRAME_SLOT_VENDOR);
725 DBGFS_DUMP_DI(HDMI_SW_DI_N_PKT_WORD6, HDMI_IFRAME_SLOT_VENDOR);
731 static struct drm_info_list hdmi_debugfs_files[] = {
732 { "hdmi", hdmi_dbg_show, 0, NULL },
735 static void hdmi_debugfs_exit(struct sti_hdmi *hdmi, struct drm_minor *minor)
737 drm_debugfs_remove_files(hdmi_debugfs_files,
738 ARRAY_SIZE(hdmi_debugfs_files),
742 static int hdmi_debugfs_init(struct sti_hdmi *hdmi, struct drm_minor *minor)
746 for (i = 0; i < ARRAY_SIZE(hdmi_debugfs_files); i++)
747 hdmi_debugfs_files[i].data = hdmi;
749 return drm_debugfs_create_files(hdmi_debugfs_files,
750 ARRAY_SIZE(hdmi_debugfs_files),
751 minor->debugfs_root, minor);
754 static void sti_hdmi_disable(struct drm_bridge *bridge)
756 struct sti_hdmi *hdmi = bridge->driver_private;
758 u32 val = hdmi_read(hdmi, HDMI_CFG);
763 DRM_DEBUG_DRIVER("\n");
766 val &= ~HDMI_CFG_DEVICE_EN;
767 hdmi_write(hdmi, val, HDMI_CFG);
769 hdmi_write(hdmi, 0xffffffff, HDMI_INT_CLR);
772 hdmi->phy_ops->stop(hdmi);
774 /* Reset info frame transmission */
775 hdmi_infoframe_reset(hdmi, HDMI_IFRAME_SLOT_AVI);
776 hdmi_infoframe_reset(hdmi, HDMI_IFRAME_SLOT_AUDIO);
777 hdmi_infoframe_reset(hdmi, HDMI_IFRAME_SLOT_VENDOR);
779 /* Set the default channel data to be a dark red */
780 hdmi_write(hdmi, 0x0000, HDMI_DFLT_CHL0_DAT);
781 hdmi_write(hdmi, 0x0000, HDMI_DFLT_CHL1_DAT);
782 hdmi_write(hdmi, 0x0060, HDMI_DFLT_CHL2_DAT);
784 /* Disable/unprepare hdmi clock */
785 clk_disable_unprepare(hdmi->clk_phy);
786 clk_disable_unprepare(hdmi->clk_tmds);
787 clk_disable_unprepare(hdmi->clk_pix);
789 hdmi->enabled = false;
792 static void sti_hdmi_pre_enable(struct drm_bridge *bridge)
794 struct sti_hdmi *hdmi = bridge->driver_private;
796 DRM_DEBUG_DRIVER("\n");
801 /* Prepare/enable clocks */
802 if (clk_prepare_enable(hdmi->clk_pix))
803 DRM_ERROR("Failed to prepare/enable hdmi_pix clk\n");
804 if (clk_prepare_enable(hdmi->clk_tmds))
805 DRM_ERROR("Failed to prepare/enable hdmi_tmds clk\n");
806 if (clk_prepare_enable(hdmi->clk_phy))
807 DRM_ERROR("Failed to prepare/enable hdmi_rejec_pll clk\n");
809 hdmi->enabled = true;
811 /* Program hdmi serializer and start phy */
812 if (!hdmi->phy_ops->start(hdmi)) {
813 DRM_ERROR("Unable to start hdmi phy\n");
817 /* Program hdmi active area */
818 hdmi_active_area(hdmi);
820 /* Enable working interrupts */
821 hdmi_write(hdmi, HDMI_WORKING_INT, HDMI_INT_EN);
823 /* Program hdmi config */
826 /* Program AVI infoframe */
827 if (hdmi_avi_infoframe_config(hdmi))
828 DRM_ERROR("Unable to configure AVI infoframe\n");
830 /* Program AUDIO infoframe */
831 if (hdmi_audio_infoframe_config(hdmi))
832 DRM_ERROR("Unable to configure AUDIO infoframe\n");
834 /* Program VS infoframe */
835 if (hdmi_vendor_infoframe_config(hdmi))
836 DRM_ERROR("Unable to configure VS infoframe\n");
842 static void sti_hdmi_set_mode(struct drm_bridge *bridge,
843 struct drm_display_mode *mode,
844 struct drm_display_mode *adjusted_mode)
846 struct sti_hdmi *hdmi = bridge->driver_private;
849 DRM_DEBUG_DRIVER("\n");
851 /* Copy the drm display mode in the connector local structure */
852 memcpy(&hdmi->mode, mode, sizeof(struct drm_display_mode));
854 /* Update clock framerate according to the selected mode */
855 ret = clk_set_rate(hdmi->clk_pix, mode->clock * 1000);
857 DRM_ERROR("Cannot set rate (%dHz) for hdmi_pix clk\n",
861 ret = clk_set_rate(hdmi->clk_phy, mode->clock * 1000);
863 DRM_ERROR("Cannot set rate (%dHz) for hdmi_rejection_pll clk\n",
869 static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
874 static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
875 .pre_enable = sti_hdmi_pre_enable,
876 .enable = sti_hdmi_bridge_nope,
877 .disable = sti_hdmi_disable,
878 .post_disable = sti_hdmi_bridge_nope,
879 .mode_set = sti_hdmi_set_mode,
882 static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
884 struct sti_hdmi_connector *hdmi_connector
885 = to_sti_hdmi_connector(connector);
886 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
890 DRM_DEBUG_DRIVER("\n");
892 edid = drm_get_edid(connector, hdmi->ddc_adapt);
896 count = drm_add_edid_modes(connector, edid);
897 drm_mode_connector_update_edid_property(connector, edid);
898 drm_edid_to_eld(connector, edid);
904 DRM_ERROR("Can't read HDMI EDID\n");
908 #define CLK_TOLERANCE_HZ 50
910 static int sti_hdmi_connector_mode_valid(struct drm_connector *connector,
911 struct drm_display_mode *mode)
913 int target = mode->clock * 1000;
914 int target_min = target - CLK_TOLERANCE_HZ;
915 int target_max = target + CLK_TOLERANCE_HZ;
917 struct sti_hdmi_connector *hdmi_connector
918 = to_sti_hdmi_connector(connector);
919 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
922 result = clk_round_rate(hdmi->clk_pix, target);
924 DRM_DEBUG_DRIVER("target rate = %d => available rate = %d\n",
927 if ((result < target_min) || (result > target_max)) {
928 DRM_DEBUG_DRIVER("hdmi pixclk=%d not supported\n", target);
936 struct drm_connector_helper_funcs sti_hdmi_connector_helper_funcs = {
937 .get_modes = sti_hdmi_connector_get_modes,
938 .mode_valid = sti_hdmi_connector_mode_valid,
941 /* get detection status of display device */
942 static enum drm_connector_status
943 sti_hdmi_connector_detect(struct drm_connector *connector, bool force)
945 struct sti_hdmi_connector *hdmi_connector
946 = to_sti_hdmi_connector(connector);
947 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
949 DRM_DEBUG_DRIVER("\n");
952 DRM_DEBUG_DRIVER("hdmi cable connected\n");
953 return connector_status_connected;
956 DRM_DEBUG_DRIVER("hdmi cable disconnected\n");
957 return connector_status_disconnected;
960 static void sti_hdmi_connector_init_property(struct drm_device *drm_dev,
961 struct drm_connector *connector)
963 struct sti_hdmi_connector *hdmi_connector
964 = to_sti_hdmi_connector(connector);
965 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
966 struct drm_property *prop;
968 /* colorspace property */
969 hdmi->colorspace = DEFAULT_COLORSPACE_MODE;
970 prop = drm_property_create_enum(drm_dev, 0, "colorspace",
971 colorspace_mode_names,
972 ARRAY_SIZE(colorspace_mode_names));
974 DRM_ERROR("fails to create colorspace property\n");
977 hdmi_connector->colorspace_property = prop;
978 drm_object_attach_property(&connector->base, prop, hdmi->colorspace);
980 /* hdmi_mode property */
981 hdmi->hdmi_mode = DEFAULT_HDMI_MODE;
982 prop = drm_property_create_enum(drm_dev, 0, "hdmi_mode",
984 ARRAY_SIZE(hdmi_mode_names));
986 DRM_ERROR("fails to create colorspace property\n");
989 hdmi_connector->hdmi_mode_property = prop;
990 drm_object_attach_property(&connector->base, prop, hdmi->hdmi_mode);
995 sti_hdmi_connector_set_property(struct drm_connector *connector,
996 struct drm_connector_state *state,
997 struct drm_property *property,
1000 struct sti_hdmi_connector *hdmi_connector
1001 = to_sti_hdmi_connector(connector);
1002 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
1004 if (property == hdmi_connector->colorspace_property) {
1005 hdmi->colorspace = val;
1009 if (property == hdmi_connector->hdmi_mode_property) {
1010 hdmi->hdmi_mode = val;
1014 DRM_ERROR("failed to set hdmi connector property\n");
1019 sti_hdmi_connector_get_property(struct drm_connector *connector,
1020 const struct drm_connector_state *state,
1021 struct drm_property *property,
1024 struct sti_hdmi_connector *hdmi_connector
1025 = to_sti_hdmi_connector(connector);
1026 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
1028 if (property == hdmi_connector->colorspace_property) {
1029 *val = hdmi->colorspace;
1033 if (property == hdmi_connector->hdmi_mode_property) {
1034 *val = hdmi->hdmi_mode;
1038 DRM_ERROR("failed to get hdmi connector property\n");
1042 static int sti_hdmi_late_register(struct drm_connector *connector)
1044 struct sti_hdmi_connector *hdmi_connector
1045 = to_sti_hdmi_connector(connector);
1046 struct sti_hdmi *hdmi = hdmi_connector->hdmi;
1048 if (hdmi_debugfs_init(hdmi, hdmi->drm_dev->primary)) {
1049 DRM_ERROR("HDMI debugfs setup failed\n");
1056 static const struct drm_connector_funcs sti_hdmi_connector_funcs = {
1057 .fill_modes = drm_helper_probe_single_connector_modes,
1058 .detect = sti_hdmi_connector_detect,
1059 .destroy = drm_connector_cleanup,
1060 .reset = drm_atomic_helper_connector_reset,
1061 .set_property = drm_atomic_helper_connector_set_property,
1062 .atomic_set_property = sti_hdmi_connector_set_property,
1063 .atomic_get_property = sti_hdmi_connector_get_property,
1064 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1065 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1066 .late_register = sti_hdmi_late_register,
1069 static struct drm_encoder *sti_hdmi_find_encoder(struct drm_device *dev)
1071 struct drm_encoder *encoder;
1073 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1074 if (encoder->encoder_type == DRM_MODE_ENCODER_TMDS)
1082 * sti_hdmi_audio_get_non_coherent_n() - get N parameter for non-coherent
1083 * clocks. None-coherent clocks means that audio and TMDS clocks have not the
1084 * same source (drifts between clocks). In this case assumption is that CTS is
1085 * automatically calculated by hardware.
1087 * @audio_fs: audio frame clock frequency in Hz
1089 * Values computed are based on table described in HDMI specification 1.4b
1093 static int sti_hdmi_audio_get_non_coherent_n(unsigned int audio_fs)
1120 /* Not pre-defined, recommended value: 128 * fs / 1000 */
1121 n = (audio_fs * 128) / 1000;
1127 static int hdmi_audio_configure(struct sti_hdmi *hdmi,
1128 struct hdmi_audio_params *params)
1131 struct hdmi_audio_infoframe *info = ¶ms->cea;
1133 DRM_DEBUG_DRIVER("\n");
1138 /* update N parameter */
1139 n = sti_hdmi_audio_get_non_coherent_n(params->sample_rate);
1141 DRM_DEBUG_DRIVER("Audio rate = %d Hz, TMDS clock = %d Hz, n = %d\n",
1142 params->sample_rate, hdmi->mode.clock * 1000, n);
1143 hdmi_write(hdmi, n, HDMI_AUDN);
1145 /* update HDMI registers according to configuration */
1146 audio_cfg = HDMI_AUD_CFG_SPDIF_DIV_2 | HDMI_AUD_CFG_DTS_INVALID |
1147 HDMI_AUD_CFG_ONE_BIT_INVALID;
1149 switch (info->channels) {
1151 audio_cfg |= HDMI_AUD_CFG_CH78_VALID;
1153 audio_cfg |= HDMI_AUD_CFG_CH56_VALID;
1155 audio_cfg |= HDMI_AUD_CFG_CH34_VALID | HDMI_AUD_CFG_8CH;
1157 audio_cfg |= HDMI_AUD_CFG_CH12_VALID;
1160 DRM_ERROR("ERROR: Unsupported number of channels (%d)!\n",
1165 hdmi_write(hdmi, audio_cfg, HDMI_AUDIO_CFG);
1167 hdmi->audio = *params;
1169 return hdmi_audio_infoframe_config(hdmi);
1172 static void hdmi_audio_shutdown(struct device *dev, void *data)
1174 struct sti_hdmi *hdmi = dev_get_drvdata(dev);
1177 DRM_DEBUG_DRIVER("\n");
1180 audio_cfg = HDMI_AUD_CFG_SPDIF_DIV_2 | HDMI_AUD_CFG_DTS_INVALID |
1181 HDMI_AUD_CFG_ONE_BIT_INVALID;
1182 hdmi_write(hdmi, audio_cfg, HDMI_AUDIO_CFG);
1184 hdmi->audio.enabled = 0;
1185 hdmi_audio_infoframe_config(hdmi);
1188 static int hdmi_audio_hw_params(struct device *dev,
1190 struct hdmi_codec_daifmt *daifmt,
1191 struct hdmi_codec_params *params)
1193 struct sti_hdmi *hdmi = dev_get_drvdata(dev);
1195 struct hdmi_audio_params audio = {
1196 .sample_width = params->sample_width,
1197 .sample_rate = params->sample_rate,
1201 DRM_DEBUG_DRIVER("\n");
1206 if ((daifmt->fmt != HDMI_I2S) || daifmt->bit_clk_inv ||
1207 daifmt->frame_clk_inv || daifmt->bit_clk_master ||
1208 daifmt->frame_clk_master) {
1209 dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__,
1210 daifmt->bit_clk_inv, daifmt->frame_clk_inv,
1211 daifmt->bit_clk_master,
1212 daifmt->frame_clk_master);
1218 ret = hdmi_audio_configure(hdmi, &audio);
1225 static int hdmi_audio_digital_mute(struct device *dev, void *data, bool enable)
1227 struct sti_hdmi *hdmi = dev_get_drvdata(dev);
1229 DRM_DEBUG_DRIVER("%s\n", enable ? "enable" : "disable");
1232 hdmi_write(hdmi, HDMI_SAMPLE_FLAT_ALL, HDMI_SAMPLE_FLAT_MASK);
1234 hdmi_write(hdmi, HDMI_SAMPLE_FLAT_NO, HDMI_SAMPLE_FLAT_MASK);
1239 static int hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
1241 struct sti_hdmi *hdmi = dev_get_drvdata(dev);
1242 struct drm_connector *connector = hdmi->drm_connector;
1244 DRM_DEBUG_DRIVER("\n");
1245 memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
1250 static const struct hdmi_codec_ops audio_codec_ops = {
1251 .hw_params = hdmi_audio_hw_params,
1252 .audio_shutdown = hdmi_audio_shutdown,
1253 .digital_mute = hdmi_audio_digital_mute,
1254 .get_eld = hdmi_audio_get_eld,
1257 static int sti_hdmi_register_audio_driver(struct device *dev,
1258 struct sti_hdmi *hdmi)
1260 struct hdmi_codec_pdata codec_data = {
1261 .ops = &audio_codec_ops,
1262 .max_i2s_channels = 8,
1266 DRM_DEBUG_DRIVER("\n");
1268 hdmi->audio.enabled = 0;
1270 hdmi->audio_pdev = platform_device_register_data(
1271 dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
1272 &codec_data, sizeof(codec_data));
1274 if (IS_ERR(hdmi->audio_pdev))
1275 return PTR_ERR(hdmi->audio_pdev);
1277 DRM_INFO("%s Driver bound %s\n", HDMI_CODEC_DRV_NAME, dev_name(dev));
1282 static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
1284 struct sti_hdmi *hdmi = dev_get_drvdata(dev);
1285 struct drm_device *drm_dev = data;
1286 struct drm_encoder *encoder;
1287 struct sti_hdmi_connector *connector;
1288 struct drm_connector *drm_connector;
1289 struct drm_bridge *bridge;
1292 /* Set the drm device handle */
1293 hdmi->drm_dev = drm_dev;
1295 encoder = sti_hdmi_find_encoder(drm_dev);
1299 connector = devm_kzalloc(dev, sizeof(*connector), GFP_KERNEL);
1303 connector->hdmi = hdmi;
1305 bridge = devm_kzalloc(dev, sizeof(*bridge), GFP_KERNEL);
1309 bridge->driver_private = hdmi;
1310 bridge->funcs = &sti_hdmi_bridge_funcs;
1311 drm_bridge_attach(drm_dev, bridge);
1313 encoder->bridge = bridge;
1314 connector->encoder = encoder;
1316 drm_connector = (struct drm_connector *)connector;
1318 drm_connector->polled = DRM_CONNECTOR_POLL_HPD;
1320 drm_connector_init(drm_dev, drm_connector,
1321 &sti_hdmi_connector_funcs, DRM_MODE_CONNECTOR_HDMIA);
1322 drm_connector_helper_add(drm_connector,
1323 &sti_hdmi_connector_helper_funcs);
1325 /* initialise property */
1326 sti_hdmi_connector_init_property(drm_dev, drm_connector);
1328 hdmi->drm_connector = drm_connector;
1330 err = drm_mode_connector_attach_encoder(drm_connector, encoder);
1332 DRM_ERROR("Failed to attach a connector to a encoder\n");
1336 err = sti_hdmi_register_audio_driver(dev, hdmi);
1338 DRM_ERROR("Failed to attach an audio codec\n");
1342 /* Initialize audio infoframe */
1343 err = hdmi_audio_infoframe_init(&hdmi->audio.cea);
1345 DRM_ERROR("Failed to init audio infoframe\n");
1349 /* Enable default interrupts */
1350 hdmi_write(hdmi, HDMI_DEFAULT_INT, HDMI_INT_EN);
1355 drm_bridge_remove(bridge);
1356 hdmi->drm_connector = NULL;
1360 static void sti_hdmi_unbind(struct device *dev,
1361 struct device *master, void *data)
1363 struct sti_hdmi *hdmi = dev_get_drvdata(dev);
1364 struct drm_device *drm_dev = data;
1366 hdmi_debugfs_exit(hdmi, drm_dev->primary);
1369 static const struct component_ops sti_hdmi_ops = {
1370 .bind = sti_hdmi_bind,
1371 .unbind = sti_hdmi_unbind,
1374 static const struct of_device_id hdmi_of_match[] = {
1376 .compatible = "st,stih416-hdmi",
1377 .data = &tx3g0c55phy_ops,
1379 .compatible = "st,stih407-hdmi",
1380 .data = &tx3g4c28phy_ops,
1385 MODULE_DEVICE_TABLE(of, hdmi_of_match);
1387 static int sti_hdmi_probe(struct platform_device *pdev)
1389 struct device *dev = &pdev->dev;
1390 struct sti_hdmi *hdmi;
1391 struct device_node *np = dev->of_node;
1392 struct resource *res;
1393 struct device_node *ddc;
1396 DRM_INFO("%s\n", __func__);
1398 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
1402 ddc = of_parse_phandle(pdev->dev.of_node, "ddc", 0);
1404 hdmi->ddc_adapt = of_get_i2c_adapter_by_node(ddc);
1406 if (!hdmi->ddc_adapt)
1407 return -EPROBE_DEFER;
1410 hdmi->dev = pdev->dev;
1413 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hdmi-reg");
1415 DRM_ERROR("Invalid hdmi resource\n");
1417 goto release_adapter;
1419 hdmi->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
1422 goto release_adapter;
1425 if (of_device_is_compatible(np, "st,stih416-hdmi")) {
1426 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
1429 DRM_ERROR("Invalid syscfg resource\n");
1431 goto release_adapter;
1433 hdmi->syscfg = devm_ioremap_nocache(dev, res->start,
1434 resource_size(res));
1435 if (!hdmi->syscfg) {
1437 goto release_adapter;
1441 hdmi->phy_ops = (struct hdmi_phy_ops *)
1442 of_match_node(hdmi_of_match, np)->data;
1444 /* Get clock resources */
1445 hdmi->clk_pix = devm_clk_get(dev, "pix");
1446 if (IS_ERR(hdmi->clk_pix)) {
1447 DRM_ERROR("Cannot get hdmi_pix clock\n");
1448 ret = PTR_ERR(hdmi->clk_pix);
1449 goto release_adapter;
1452 hdmi->clk_tmds = devm_clk_get(dev, "tmds");
1453 if (IS_ERR(hdmi->clk_tmds)) {
1454 DRM_ERROR("Cannot get hdmi_tmds clock\n");
1455 ret = PTR_ERR(hdmi->clk_tmds);
1456 goto release_adapter;
1459 hdmi->clk_phy = devm_clk_get(dev, "phy");
1460 if (IS_ERR(hdmi->clk_phy)) {
1461 DRM_ERROR("Cannot get hdmi_phy clock\n");
1462 ret = PTR_ERR(hdmi->clk_phy);
1463 goto release_adapter;
1466 hdmi->clk_audio = devm_clk_get(dev, "audio");
1467 if (IS_ERR(hdmi->clk_audio)) {
1468 DRM_ERROR("Cannot get hdmi_audio clock\n");
1469 ret = PTR_ERR(hdmi->clk_audio);
1470 goto release_adapter;
1473 hdmi->hpd = readl(hdmi->regs + HDMI_STA) & HDMI_STA_HOT_PLUG;
1475 init_waitqueue_head(&hdmi->wait_event);
1477 hdmi->irq = platform_get_irq_byname(pdev, "irq");
1479 ret = devm_request_threaded_irq(dev, hdmi->irq, hdmi_irq,
1480 hdmi_irq_thread, IRQF_ONESHOT, dev_name(dev), hdmi);
1482 DRM_ERROR("Failed to register HDMI interrupt\n");
1483 goto release_adapter;
1486 hdmi->reset = devm_reset_control_get(dev, "hdmi");
1487 /* Take hdmi out of reset */
1488 if (!IS_ERR(hdmi->reset))
1489 reset_control_deassert(hdmi->reset);
1491 platform_set_drvdata(pdev, hdmi);
1493 return component_add(&pdev->dev, &sti_hdmi_ops);
1496 i2c_put_adapter(hdmi->ddc_adapt);
1501 static int sti_hdmi_remove(struct platform_device *pdev)
1503 struct sti_hdmi *hdmi = dev_get_drvdata(&pdev->dev);
1505 i2c_put_adapter(hdmi->ddc_adapt);
1506 if (hdmi->audio_pdev)
1507 platform_device_unregister(hdmi->audio_pdev);
1508 component_del(&pdev->dev, &sti_hdmi_ops);
1513 struct platform_driver sti_hdmi_driver = {
1516 .owner = THIS_MODULE,
1517 .of_match_table = hdmi_of_match,
1519 .probe = sti_hdmi_probe,
1520 .remove = sti_hdmi_remove,
1523 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
1524 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
1525 MODULE_LICENSE("GPL");