2 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * Designware High-Definition Multimedia Interface (HDMI) driver
11 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
13 #include <linux/module.h>
14 #include <linux/irq.h>
15 #include <linux/delay.h>
16 #include <linux/err.h>
17 #include <linux/clk.h>
18 #include <linux/hdmi.h>
19 #include <linux/mutex.h>
20 #include <linux/of_device.h>
22 #include <drm/drm_of.h>
24 #include <drm/drm_crtc_helper.h>
25 #include <drm/drm_edid.h>
26 #include <drm/drm_encoder_slave.h>
27 #include <drm/bridge/dw_hdmi.h>
31 #define HDMI_EDID_LEN 512
35 #define YCBCR422_16BITS 2
36 #define YCBCR422_8BITS 3
53 static const u16 csc_coeff_default
[3][4] = {
54 { 0x2000, 0x0000, 0x0000, 0x0000 },
55 { 0x0000, 0x2000, 0x0000, 0x0000 },
56 { 0x0000, 0x0000, 0x2000, 0x0000 }
59 static const u16 csc_coeff_rgb_out_eitu601
[3][4] = {
60 { 0x2000, 0x6926, 0x74fd, 0x010e },
61 { 0x2000, 0x2cdd, 0x0000, 0x7e9a },
62 { 0x2000, 0x0000, 0x38b4, 0x7e3b }
65 static const u16 csc_coeff_rgb_out_eitu709
[3][4] = {
66 { 0x2000, 0x7106, 0x7a02, 0x00a7 },
67 { 0x2000, 0x3264, 0x0000, 0x7e6d },
68 { 0x2000, 0x0000, 0x3b61, 0x7e25 }
71 static const u16 csc_coeff_rgb_in_eitu601
[3][4] = {
72 { 0x2591, 0x1322, 0x074b, 0x0000 },
73 { 0x6535, 0x2000, 0x7acc, 0x0200 },
74 { 0x6acd, 0x7534, 0x2000, 0x0200 }
77 static const u16 csc_coeff_rgb_in_eitu709
[3][4] = {
78 { 0x2dc5, 0x0d9b, 0x049e, 0x0000 },
79 { 0x62f0, 0x2000, 0x7d11, 0x0200 },
80 { 0x6756, 0x78ab, 0x2000, 0x0200 }
88 bool mdataenablepolarity
;
90 unsigned int mpixelclock
;
91 unsigned int mpixelrepetitioninput
;
92 unsigned int mpixelrepetitionoutput
;
95 struct hdmi_data_info
{
96 unsigned int enc_in_format
;
97 unsigned int enc_out_format
;
98 unsigned int enc_color_depth
;
99 unsigned int colorimetry
;
100 unsigned int pix_repet_factor
;
101 unsigned int hdcp_enable
;
102 struct hdmi_vmode video_mode
;
106 struct drm_connector connector
;
107 struct drm_encoder
*encoder
;
108 struct drm_bridge
*bridge
;
110 enum dw_hdmi_devtype dev_type
;
112 struct clk
*isfr_clk
;
113 struct clk
*iahb_clk
;
115 struct hdmi_data_info hdmi_data
;
116 const struct dw_hdmi_plat_data
*plat_data
;
120 u8 edid
[HDMI_EDID_LEN
];
124 struct drm_display_mode previous_mode
;
126 struct regmap
*regmap
;
127 struct i2c_adapter
*ddc
;
130 struct mutex audio_mutex
;
131 unsigned int sample_rate
;
134 void (*write
)(struct dw_hdmi
*hdmi
, u8 val
, int offset
);
135 u8 (*read
)(struct dw_hdmi
*hdmi
, int offset
);
138 static void dw_hdmi_writel(struct dw_hdmi
*hdmi
, u8 val
, int offset
)
140 writel(val
, hdmi
->regs
+ (offset
<< 2));
143 static u8
dw_hdmi_readl(struct dw_hdmi
*hdmi
, int offset
)
145 return readl(hdmi
->regs
+ (offset
<< 2));
148 static void dw_hdmi_writeb(struct dw_hdmi
*hdmi
, u8 val
, int offset
)
150 writeb(val
, hdmi
->regs
+ offset
);
153 static u8
dw_hdmi_readb(struct dw_hdmi
*hdmi
, int offset
)
155 return readb(hdmi
->regs
+ offset
);
158 static inline void hdmi_writeb(struct dw_hdmi
*hdmi
, u8 val
, int offset
)
160 hdmi
->write(hdmi
, val
, offset
);
163 static inline u8
hdmi_readb(struct dw_hdmi
*hdmi
, int offset
)
165 return hdmi
->read(hdmi
, offset
);
168 static void hdmi_modb(struct dw_hdmi
*hdmi
, u8 data
, u8 mask
, unsigned reg
)
170 u8 val
= hdmi_readb(hdmi
, reg
) & ~mask
;
173 hdmi_writeb(hdmi
, val
, reg
);
176 static void hdmi_mask_writeb(struct dw_hdmi
*hdmi
, u8 data
, unsigned int reg
,
179 hdmi_modb(hdmi
, data
<< shift
, mask
, reg
);
182 static void hdmi_set_cts_n(struct dw_hdmi
*hdmi
, unsigned int cts
,
185 /* Must be set/cleared first */
186 hdmi_modb(hdmi
, 0, HDMI_AUD_CTS3_CTS_MANUAL
, HDMI_AUD_CTS3
);
188 /* nshift factor = 0 */
189 hdmi_modb(hdmi
, 0, HDMI_AUD_CTS3_N_SHIFT_MASK
, HDMI_AUD_CTS3
);
191 hdmi_writeb(hdmi
, ((cts
>> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK
) |
192 HDMI_AUD_CTS3_CTS_MANUAL
, HDMI_AUD_CTS3
);
193 hdmi_writeb(hdmi
, (cts
>> 8) & 0xff, HDMI_AUD_CTS2
);
194 hdmi_writeb(hdmi
, cts
& 0xff, HDMI_AUD_CTS1
);
196 hdmi_writeb(hdmi
, (n
>> 16) & 0x0f, HDMI_AUD_N3
);
197 hdmi_writeb(hdmi
, (n
>> 8) & 0xff, HDMI_AUD_N2
);
198 hdmi_writeb(hdmi
, n
& 0xff, HDMI_AUD_N1
);
201 static unsigned int hdmi_compute_n(unsigned int freq
, unsigned long pixel_clk
,
204 unsigned int n
= (128 * freq
) / 1000;
208 if (pixel_clk
== 25170000)
209 n
= (ratio
== 150) ? 9152 : 4576;
210 else if (pixel_clk
== 27020000)
211 n
= (ratio
== 150) ? 8192 : 4096;
212 else if (pixel_clk
== 74170000 || pixel_clk
== 148350000)
219 if (pixel_clk
== 25170000)
221 else if (pixel_clk
== 74170000)
223 else if (pixel_clk
== 148350000)
224 n
= (ratio
== 150) ? 17836 : 8918;
230 if (pixel_clk
== 25170000)
231 n
= (ratio
== 150) ? 9152 : 6864;
232 else if (pixel_clk
== 27020000)
233 n
= (ratio
== 150) ? 8192 : 6144;
234 else if (pixel_clk
== 74170000)
236 else if (pixel_clk
== 148350000)
237 n
= (ratio
== 150) ? 11648 : 5824;
243 n
= hdmi_compute_n(44100, pixel_clk
, ratio
) * 2;
247 n
= hdmi_compute_n(48000, pixel_clk
, ratio
) * 2;
251 n
= hdmi_compute_n(44100, pixel_clk
, ratio
) * 4;
255 n
= hdmi_compute_n(48000, pixel_clk
, ratio
) * 4;
265 static unsigned int hdmi_compute_cts(unsigned int freq
, unsigned long pixel_clk
,
268 unsigned int cts
= 0;
270 pr_debug("%s: freq: %d pixel_clk: %ld ratio: %d\n", __func__
, freq
,
275 if (pixel_clk
== 297000000) {
288 cts
= pixel_clk
/ 1000;
294 * All other TMDS clocks are not supported by
295 * DWC_hdmi_tx. The TMDS clocks divided or
296 * multiplied by 1,001 coefficients are not
334 return (cts
* ratio
) / 100;
337 static void hdmi_set_clk_regenerator(struct dw_hdmi
*hdmi
,
338 unsigned long pixel_clk
)
340 unsigned int clk_n
, clk_cts
;
342 clk_n
= hdmi_compute_n(hdmi
->sample_rate
, pixel_clk
,
344 clk_cts
= hdmi_compute_cts(hdmi
->sample_rate
, pixel_clk
,
348 dev_dbg(hdmi
->dev
, "%s: pixel clock not supported: %lu\n",
349 __func__
, pixel_clk
);
353 dev_dbg(hdmi
->dev
, "%s: samplerate=%d ratio=%d pixelclk=%lu N=%d cts=%d\n",
354 __func__
, hdmi
->sample_rate
, hdmi
->ratio
,
355 pixel_clk
, clk_n
, clk_cts
);
357 hdmi_set_cts_n(hdmi
, clk_cts
, clk_n
);
360 static void hdmi_init_clk_regenerator(struct dw_hdmi
*hdmi
)
362 mutex_lock(&hdmi
->audio_mutex
);
363 hdmi_set_clk_regenerator(hdmi
, 74250000);
364 mutex_unlock(&hdmi
->audio_mutex
);
367 static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi
*hdmi
)
369 mutex_lock(&hdmi
->audio_mutex
);
370 hdmi_set_clk_regenerator(hdmi
, hdmi
->hdmi_data
.video_mode
.mpixelclock
);
371 mutex_unlock(&hdmi
->audio_mutex
);
375 * this submodule is responsible for the video data synchronization.
376 * for example, for RGB 4:4:4 input, the data map is defined as
377 * pin{47~40} <==> R[7:0]
378 * pin{31~24} <==> G[7:0]
379 * pin{15~8} <==> B[7:0]
381 static void hdmi_video_sample(struct dw_hdmi
*hdmi
)
383 int color_format
= 0;
386 if (hdmi
->hdmi_data
.enc_in_format
== RGB
) {
387 if (hdmi
->hdmi_data
.enc_color_depth
== 8)
389 else if (hdmi
->hdmi_data
.enc_color_depth
== 10)
391 else if (hdmi
->hdmi_data
.enc_color_depth
== 12)
393 else if (hdmi
->hdmi_data
.enc_color_depth
== 16)
397 } else if (hdmi
->hdmi_data
.enc_in_format
== YCBCR444
) {
398 if (hdmi
->hdmi_data
.enc_color_depth
== 8)
400 else if (hdmi
->hdmi_data
.enc_color_depth
== 10)
402 else if (hdmi
->hdmi_data
.enc_color_depth
== 12)
404 else if (hdmi
->hdmi_data
.enc_color_depth
== 16)
408 } else if (hdmi
->hdmi_data
.enc_in_format
== YCBCR422_8BITS
) {
409 if (hdmi
->hdmi_data
.enc_color_depth
== 8)
411 else if (hdmi
->hdmi_data
.enc_color_depth
== 10)
413 else if (hdmi
->hdmi_data
.enc_color_depth
== 12)
419 val
= HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE
|
420 ((color_format
<< HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET
) &
421 HDMI_TX_INVID0_VIDEO_MAPPING_MASK
);
422 hdmi_writeb(hdmi
, val
, HDMI_TX_INVID0
);
424 /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */
425 val
= HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE
|
426 HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE
|
427 HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE
;
428 hdmi_writeb(hdmi
, val
, HDMI_TX_INSTUFFING
);
429 hdmi_writeb(hdmi
, 0x0, HDMI_TX_GYDATA0
);
430 hdmi_writeb(hdmi
, 0x0, HDMI_TX_GYDATA1
);
431 hdmi_writeb(hdmi
, 0x0, HDMI_TX_RCRDATA0
);
432 hdmi_writeb(hdmi
, 0x0, HDMI_TX_RCRDATA1
);
433 hdmi_writeb(hdmi
, 0x0, HDMI_TX_BCBDATA0
);
434 hdmi_writeb(hdmi
, 0x0, HDMI_TX_BCBDATA1
);
437 static int is_color_space_conversion(struct dw_hdmi
*hdmi
)
439 return hdmi
->hdmi_data
.enc_in_format
!= hdmi
->hdmi_data
.enc_out_format
;
442 static int is_color_space_decimation(struct dw_hdmi
*hdmi
)
444 if (hdmi
->hdmi_data
.enc_out_format
!= YCBCR422_8BITS
)
446 if (hdmi
->hdmi_data
.enc_in_format
== RGB
||
447 hdmi
->hdmi_data
.enc_in_format
== YCBCR444
)
452 static int is_color_space_interpolation(struct dw_hdmi
*hdmi
)
454 if (hdmi
->hdmi_data
.enc_in_format
!= YCBCR422_8BITS
)
456 if (hdmi
->hdmi_data
.enc_out_format
== RGB
||
457 hdmi
->hdmi_data
.enc_out_format
== YCBCR444
)
462 static void dw_hdmi_update_csc_coeffs(struct dw_hdmi
*hdmi
)
464 const u16 (*csc_coeff
)[3][4] = &csc_coeff_default
;
468 if (is_color_space_conversion(hdmi
)) {
469 if (hdmi
->hdmi_data
.enc_out_format
== RGB
) {
470 if (hdmi
->hdmi_data
.colorimetry
==
471 HDMI_COLORIMETRY_ITU_601
)
472 csc_coeff
= &csc_coeff_rgb_out_eitu601
;
474 csc_coeff
= &csc_coeff_rgb_out_eitu709
;
475 } else if (hdmi
->hdmi_data
.enc_in_format
== RGB
) {
476 if (hdmi
->hdmi_data
.colorimetry
==
477 HDMI_COLORIMETRY_ITU_601
)
478 csc_coeff
= &csc_coeff_rgb_in_eitu601
;
480 csc_coeff
= &csc_coeff_rgb_in_eitu709
;
485 /* The CSC registers are sequential, alternating MSB then LSB */
486 for (i
= 0; i
< ARRAY_SIZE(csc_coeff_default
[0]); i
++) {
487 u16 coeff_a
= (*csc_coeff
)[0][i
];
488 u16 coeff_b
= (*csc_coeff
)[1][i
];
489 u16 coeff_c
= (*csc_coeff
)[2][i
];
491 hdmi_writeb(hdmi
, coeff_a
& 0xff, HDMI_CSC_COEF_A1_LSB
+ i
* 2);
492 hdmi_writeb(hdmi
, coeff_a
>> 8, HDMI_CSC_COEF_A1_MSB
+ i
* 2);
493 hdmi_writeb(hdmi
, coeff_b
& 0xff, HDMI_CSC_COEF_B1_LSB
+ i
* 2);
494 hdmi_writeb(hdmi
, coeff_b
>> 8, HDMI_CSC_COEF_B1_MSB
+ i
* 2);
495 hdmi_writeb(hdmi
, coeff_c
& 0xff, HDMI_CSC_COEF_C1_LSB
+ i
* 2);
496 hdmi_writeb(hdmi
, coeff_c
>> 8, HDMI_CSC_COEF_C1_MSB
+ i
* 2);
499 hdmi_modb(hdmi
, csc_scale
, HDMI_CSC_SCALE_CSCSCALE_MASK
,
503 static void hdmi_video_csc(struct dw_hdmi
*hdmi
)
506 int interpolation
= HDMI_CSC_CFG_INTMODE_DISABLE
;
509 /* YCC422 interpolation to 444 mode */
510 if (is_color_space_interpolation(hdmi
))
511 interpolation
= HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1
;
512 else if (is_color_space_decimation(hdmi
))
513 decimation
= HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3
;
515 if (hdmi
->hdmi_data
.enc_color_depth
== 8)
516 color_depth
= HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP
;
517 else if (hdmi
->hdmi_data
.enc_color_depth
== 10)
518 color_depth
= HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP
;
519 else if (hdmi
->hdmi_data
.enc_color_depth
== 12)
520 color_depth
= HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP
;
521 else if (hdmi
->hdmi_data
.enc_color_depth
== 16)
522 color_depth
= HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP
;
526 /* Configure the CSC registers */
527 hdmi_writeb(hdmi
, interpolation
| decimation
, HDMI_CSC_CFG
);
528 hdmi_modb(hdmi
, color_depth
, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK
,
531 dw_hdmi_update_csc_coeffs(hdmi
);
535 * HDMI video packetizer is used to packetize the data.
536 * for example, if input is YCC422 mode or repeater is used,
537 * data should be repacked this module can be bypassed.
539 static void hdmi_video_packetize(struct dw_hdmi
*hdmi
)
541 unsigned int color_depth
= 0;
542 unsigned int remap_size
= HDMI_VP_REMAP_YCC422_16bit
;
543 unsigned int output_select
= HDMI_VP_CONF_OUTPUT_SELECTOR_PP
;
544 struct hdmi_data_info
*hdmi_data
= &hdmi
->hdmi_data
;
547 if (hdmi_data
->enc_out_format
== RGB
||
548 hdmi_data
->enc_out_format
== YCBCR444
) {
549 if (!hdmi_data
->enc_color_depth
) {
550 output_select
= HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS
;
551 } else if (hdmi_data
->enc_color_depth
== 8) {
553 output_select
= HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS
;
554 } else if (hdmi_data
->enc_color_depth
== 10) {
556 } else if (hdmi_data
->enc_color_depth
== 12) {
558 } else if (hdmi_data
->enc_color_depth
== 16) {
563 } else if (hdmi_data
->enc_out_format
== YCBCR422_8BITS
) {
564 if (!hdmi_data
->enc_color_depth
||
565 hdmi_data
->enc_color_depth
== 8)
566 remap_size
= HDMI_VP_REMAP_YCC422_16bit
;
567 else if (hdmi_data
->enc_color_depth
== 10)
568 remap_size
= HDMI_VP_REMAP_YCC422_20bit
;
569 else if (hdmi_data
->enc_color_depth
== 12)
570 remap_size
= HDMI_VP_REMAP_YCC422_24bit
;
573 output_select
= HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422
;
578 /* set the packetizer registers */
579 val
= ((color_depth
<< HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET
) &
580 HDMI_VP_PR_CD_COLOR_DEPTH_MASK
) |
581 ((hdmi_data
->pix_repet_factor
<<
582 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET
) &
583 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK
);
584 hdmi_writeb(hdmi
, val
, HDMI_VP_PR_CD
);
586 hdmi_modb(hdmi
, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE
,
587 HDMI_VP_STUFF_PR_STUFFING_MASK
, HDMI_VP_STUFF
);
589 /* Data from pixel repeater block */
590 if (hdmi_data
->pix_repet_factor
> 1) {
591 vp_conf
= HDMI_VP_CONF_PR_EN_ENABLE
|
592 HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER
;
593 } else { /* data from packetizer block */
594 vp_conf
= HDMI_VP_CONF_PR_EN_DISABLE
|
595 HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER
;
598 hdmi_modb(hdmi
, vp_conf
,
599 HDMI_VP_CONF_PR_EN_MASK
|
600 HDMI_VP_CONF_BYPASS_SELECT_MASK
, HDMI_VP_CONF
);
602 hdmi_modb(hdmi
, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET
,
603 HDMI_VP_STUFF_IDEFAULT_PHASE_MASK
, HDMI_VP_STUFF
);
605 hdmi_writeb(hdmi
, remap_size
, HDMI_VP_REMAP
);
607 if (output_select
== HDMI_VP_CONF_OUTPUT_SELECTOR_PP
) {
608 vp_conf
= HDMI_VP_CONF_BYPASS_EN_DISABLE
|
609 HDMI_VP_CONF_PP_EN_ENABLE
|
610 HDMI_VP_CONF_YCC422_EN_DISABLE
;
611 } else if (output_select
== HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422
) {
612 vp_conf
= HDMI_VP_CONF_BYPASS_EN_DISABLE
|
613 HDMI_VP_CONF_PP_EN_DISABLE
|
614 HDMI_VP_CONF_YCC422_EN_ENABLE
;
615 } else if (output_select
== HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS
) {
616 vp_conf
= HDMI_VP_CONF_BYPASS_EN_ENABLE
|
617 HDMI_VP_CONF_PP_EN_DISABLE
|
618 HDMI_VP_CONF_YCC422_EN_DISABLE
;
623 hdmi_modb(hdmi
, vp_conf
,
624 HDMI_VP_CONF_BYPASS_EN_MASK
| HDMI_VP_CONF_PP_EN_ENMASK
|
625 HDMI_VP_CONF_YCC422_EN_MASK
, HDMI_VP_CONF
);
627 hdmi_modb(hdmi
, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE
|
628 HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE
,
629 HDMI_VP_STUFF_PP_STUFFING_MASK
|
630 HDMI_VP_STUFF_YCC422_STUFFING_MASK
, HDMI_VP_STUFF
);
632 hdmi_modb(hdmi
, output_select
, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK
,
636 static inline void hdmi_phy_test_clear(struct dw_hdmi
*hdmi
,
639 hdmi_modb(hdmi
, bit
<< HDMI_PHY_TST0_TSTCLR_OFFSET
,
640 HDMI_PHY_TST0_TSTCLR_MASK
, HDMI_PHY_TST0
);
643 static inline void hdmi_phy_test_enable(struct dw_hdmi
*hdmi
,
646 hdmi_modb(hdmi
, bit
<< HDMI_PHY_TST0_TSTEN_OFFSET
,
647 HDMI_PHY_TST0_TSTEN_MASK
, HDMI_PHY_TST0
);
650 static inline void hdmi_phy_test_clock(struct dw_hdmi
*hdmi
,
653 hdmi_modb(hdmi
, bit
<< HDMI_PHY_TST0_TSTCLK_OFFSET
,
654 HDMI_PHY_TST0_TSTCLK_MASK
, HDMI_PHY_TST0
);
657 static inline void hdmi_phy_test_din(struct dw_hdmi
*hdmi
,
660 hdmi_writeb(hdmi
, bit
, HDMI_PHY_TST1
);
663 static inline void hdmi_phy_test_dout(struct dw_hdmi
*hdmi
,
666 hdmi_writeb(hdmi
, bit
, HDMI_PHY_TST2
);
669 static bool hdmi_phy_wait_i2c_done(struct dw_hdmi
*hdmi
, int msec
)
673 while ((val
= hdmi_readb(hdmi
, HDMI_IH_I2CMPHY_STAT0
) & 0x3) == 0) {
678 hdmi_writeb(hdmi
, val
, HDMI_IH_I2CMPHY_STAT0
);
683 static void __hdmi_phy_i2c_write(struct dw_hdmi
*hdmi
, unsigned short data
,
686 hdmi_writeb(hdmi
, 0xFF, HDMI_IH_I2CMPHY_STAT0
);
687 hdmi_writeb(hdmi
, addr
, HDMI_PHY_I2CM_ADDRESS_ADDR
);
688 hdmi_writeb(hdmi
, (unsigned char)(data
>> 8),
689 HDMI_PHY_I2CM_DATAO_1_ADDR
);
690 hdmi_writeb(hdmi
, (unsigned char)(data
>> 0),
691 HDMI_PHY_I2CM_DATAO_0_ADDR
);
692 hdmi_writeb(hdmi
, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE
,
693 HDMI_PHY_I2CM_OPERATION_ADDR
);
694 hdmi_phy_wait_i2c_done(hdmi
, 1000);
697 static int hdmi_phy_i2c_write(struct dw_hdmi
*hdmi
, unsigned short data
,
700 __hdmi_phy_i2c_write(hdmi
, data
, addr
);
704 static void dw_hdmi_phy_enable_power(struct dw_hdmi
*hdmi
, u8 enable
)
706 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
707 HDMI_PHY_CONF0_PDZ_OFFSET
,
708 HDMI_PHY_CONF0_PDZ_MASK
);
711 static void dw_hdmi_phy_enable_tmds(struct dw_hdmi
*hdmi
, u8 enable
)
713 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
714 HDMI_PHY_CONF0_ENTMDS_OFFSET
,
715 HDMI_PHY_CONF0_ENTMDS_MASK
);
718 static void dw_hdmi_phy_enable_spare(struct dw_hdmi
*hdmi
, u8 enable
)
720 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
721 HDMI_PHY_CONF0_SPARECTRL_OFFSET
,
722 HDMI_PHY_CONF0_SPARECTRL_MASK
);
725 static void dw_hdmi_phy_gen2_pddq(struct dw_hdmi
*hdmi
, u8 enable
)
727 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
728 HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET
,
729 HDMI_PHY_CONF0_GEN2_PDDQ_MASK
);
732 static void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi
*hdmi
, u8 enable
)
734 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
735 HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET
,
736 HDMI_PHY_CONF0_GEN2_TXPWRON_MASK
);
739 static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi
*hdmi
, u8 enable
)
741 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
742 HDMI_PHY_CONF0_SELDATAENPOL_OFFSET
,
743 HDMI_PHY_CONF0_SELDATAENPOL_MASK
);
746 static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi
*hdmi
, u8 enable
)
748 hdmi_mask_writeb(hdmi
, enable
, HDMI_PHY_CONF0
,
749 HDMI_PHY_CONF0_SELDIPIF_OFFSET
,
750 HDMI_PHY_CONF0_SELDIPIF_MASK
);
753 static int hdmi_phy_configure(struct dw_hdmi
*hdmi
, unsigned char prep
,
754 unsigned char res
, int cscon
)
758 const struct dw_hdmi_mpll_config
*mpll_config
=
759 hdmi
->plat_data
->mpll_cfg
;
760 const struct dw_hdmi_curr_ctrl
*curr_ctrl
= hdmi
->plat_data
->cur_ctr
;
761 const struct dw_hdmi_sym_term
*sym_term
= hdmi
->plat_data
->sym_term
;
767 case 0: /* color resolution 0 is 8 bit colour depth */
769 res_idx
= DW_HDMI_RES_8
;
772 res_idx
= DW_HDMI_RES_10
;
775 res_idx
= DW_HDMI_RES_12
;
781 /* Enable csc path */
783 val
= HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH
;
785 val
= HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS
;
787 hdmi_writeb(hdmi
, val
, HDMI_MC_FLOWCTRL
);
789 /* gen2 tx power off */
790 dw_hdmi_phy_gen2_txpwron(hdmi
, 0);
793 dw_hdmi_phy_gen2_pddq(hdmi
, 1);
796 hdmi_writeb(hdmi
, HDMI_MC_PHYRSTZ_DEASSERT
, HDMI_MC_PHYRSTZ
);
797 hdmi_writeb(hdmi
, HDMI_MC_PHYRSTZ_ASSERT
, HDMI_MC_PHYRSTZ
);
799 hdmi_writeb(hdmi
, HDMI_MC_HEACPHY_RST_ASSERT
, HDMI_MC_HEACPHY_RST
);
801 hdmi_phy_test_clear(hdmi
, 1);
802 hdmi_writeb(hdmi
, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2
,
803 HDMI_PHY_I2CM_SLAVE_ADDR
);
804 hdmi_phy_test_clear(hdmi
, 0);
806 /* PLL/MPLL Cfg - always match on final entry */
807 for (i
= 0; mpll_config
[i
].mpixelclock
!= (~0UL); i
++)
808 if (hdmi
->hdmi_data
.video_mode
.mpixelclock
<=
809 mpll_config
[i
].mpixelclock
)
812 hdmi_phy_i2c_write(hdmi
, mpll_config
[i
].res
[res_idx
].cpce
, 0x06);
813 hdmi_phy_i2c_write(hdmi
, mpll_config
[i
].res
[res_idx
].gmp
, 0x15);
815 for (i
= 0; curr_ctrl
[i
].mpixelclock
!= (~0UL); i
++)
816 if (hdmi
->hdmi_data
.video_mode
.mpixelclock
<=
817 curr_ctrl
[i
].mpixelclock
)
820 if (curr_ctrl
[i
].mpixelclock
== (~0UL)) {
821 dev_err(hdmi
->dev
, "Pixel clock %d - unsupported by HDMI\n",
822 hdmi
->hdmi_data
.video_mode
.mpixelclock
);
827 hdmi_phy_i2c_write(hdmi
, curr_ctrl
[i
].curr
[res_idx
], 0x10);
829 hdmi_phy_i2c_write(hdmi
, 0x0000, 0x13); /* PLLPHBYCTRL */
830 hdmi_phy_i2c_write(hdmi
, 0x0006, 0x17);
832 for (i
= 0; sym_term
[i
].mpixelclock
!= (~0UL); i
++)
833 if (hdmi
->hdmi_data
.video_mode
.mpixelclock
<=
834 sym_term
[i
].mpixelclock
)
837 /* RESISTANCE TERM 133Ohm Cfg */
838 hdmi_phy_i2c_write(hdmi
, sym_term
[i
].term
, 0x19); /* TXTERM */
839 /* PREEMP Cgf 0.00 */
840 hdmi_phy_i2c_write(hdmi
, sym_term
[i
].sym_ctr
, 0x09); /* CKSYMTXCTRL */
843 hdmi_phy_i2c_write(hdmi
, 0x01ad, 0x0E); /* VLEVCTRL */
844 /* REMOVE CLK TERM */
845 hdmi_phy_i2c_write(hdmi
, 0x8000, 0x05); /* CKCALCTRL */
847 dw_hdmi_phy_enable_power(hdmi
, 1);
849 /* toggle TMDS enable */
850 dw_hdmi_phy_enable_tmds(hdmi
, 0);
851 dw_hdmi_phy_enable_tmds(hdmi
, 1);
853 /* gen2 tx power on */
854 dw_hdmi_phy_gen2_txpwron(hdmi
, 1);
855 dw_hdmi_phy_gen2_pddq(hdmi
, 0);
857 if (hdmi
->dev_type
== RK3288_HDMI
)
858 dw_hdmi_phy_enable_spare(hdmi
, 1);
860 /*Wait for PHY PLL lock */
863 val
= hdmi_readb(hdmi
, HDMI_PHY_STAT0
) & HDMI_PHY_TX_PHY_LOCK
;
868 dev_err(hdmi
->dev
, "PHY PLL not locked\n");
879 static int dw_hdmi_phy_init(struct dw_hdmi
*hdmi
)
884 /*check csc whether needed activated in HDMI mode */
885 cscon
= (is_color_space_conversion(hdmi
) &&
886 !hdmi
->hdmi_data
.video_mode
.mdvi
);
888 /* HDMI Phy spec says to do the phy initialization sequence twice */
889 for (i
= 0; i
< 2; i
++) {
890 dw_hdmi_phy_sel_data_en_pol(hdmi
, 1);
891 dw_hdmi_phy_sel_interface_control(hdmi
, 0);
892 dw_hdmi_phy_enable_tmds(hdmi
, 0);
893 dw_hdmi_phy_enable_power(hdmi
, 0);
896 ret
= hdmi_phy_configure(hdmi
, 0, 8, cscon
);
901 hdmi
->phy_enabled
= true;
905 static void hdmi_tx_hdcp_config(struct dw_hdmi
*hdmi
)
909 if (hdmi
->hdmi_data
.video_mode
.mdataenablepolarity
)
910 de
= HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH
;
912 de
= HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW
;
914 /* disable rx detect */
915 hdmi_modb(hdmi
, HDMI_A_HDCPCFG0_RXDETECT_DISABLE
,
916 HDMI_A_HDCPCFG0_RXDETECT_MASK
, HDMI_A_HDCPCFG0
);
918 hdmi_modb(hdmi
, de
, HDMI_A_VIDPOLCFG_DATAENPOL_MASK
, HDMI_A_VIDPOLCFG
);
920 hdmi_modb(hdmi
, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE
,
921 HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK
, HDMI_A_HDCPCFG1
);
924 static void hdmi_config_AVI(struct dw_hdmi
*hdmi
)
926 u8 val
, pix_fmt
, under_scan
;
927 u8 act_ratio
, coded_ratio
, colorimetry
, ext_colorimetry
;
930 aspect_16_9
= false; /* FIXME */
932 /* AVI Data Byte 1 */
933 if (hdmi
->hdmi_data
.enc_out_format
== YCBCR444
)
934 pix_fmt
= HDMI_FC_AVICONF0_PIX_FMT_YCBCR444
;
935 else if (hdmi
->hdmi_data
.enc_out_format
== YCBCR422_8BITS
)
936 pix_fmt
= HDMI_FC_AVICONF0_PIX_FMT_YCBCR422
;
938 pix_fmt
= HDMI_FC_AVICONF0_PIX_FMT_RGB
;
940 under_scan
= HDMI_FC_AVICONF0_SCAN_INFO_NODATA
;
943 * Active format identification data is present in the AVI InfoFrame.
944 * Under scan info, no bar data
946 val
= pix_fmt
| under_scan
|
947 HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT
|
948 HDMI_FC_AVICONF0_BAR_DATA_NO_DATA
;
950 hdmi_writeb(hdmi
, val
, HDMI_FC_AVICONF0
);
952 /* AVI Data Byte 2 -Set the Aspect Ratio */
954 act_ratio
= HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_16_9
;
955 coded_ratio
= HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_16_9
;
957 act_ratio
= HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_4_3
;
958 coded_ratio
= HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_4_3
;
961 /* Set up colorimetry */
962 if (hdmi
->hdmi_data
.enc_out_format
== XVYCC444
) {
963 colorimetry
= HDMI_FC_AVICONF1_COLORIMETRY_EXTENDED_INFO
;
964 if (hdmi
->hdmi_data
.colorimetry
== HDMI_COLORIMETRY_ITU_601
)
966 HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601
;
967 else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/
969 HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC709
;
970 } else if (hdmi
->hdmi_data
.enc_out_format
!= RGB
) {
971 if (hdmi
->hdmi_data
.colorimetry
== HDMI_COLORIMETRY_ITU_601
)
972 colorimetry
= HDMI_FC_AVICONF1_COLORIMETRY_SMPTE
;
973 else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/
974 colorimetry
= HDMI_FC_AVICONF1_COLORIMETRY_ITUR
;
975 ext_colorimetry
= HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601
;
976 } else { /* Carries no data */
977 colorimetry
= HDMI_FC_AVICONF1_COLORIMETRY_NO_DATA
;
978 ext_colorimetry
= HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601
;
981 val
= colorimetry
| coded_ratio
| act_ratio
;
982 hdmi_writeb(hdmi
, val
, HDMI_FC_AVICONF1
);
984 /* AVI Data Byte 3 */
985 val
= HDMI_FC_AVICONF2_IT_CONTENT_NO_DATA
| ext_colorimetry
|
986 HDMI_FC_AVICONF2_RGB_QUANT_DEFAULT
|
987 HDMI_FC_AVICONF2_SCALING_NONE
;
988 hdmi_writeb(hdmi
, val
, HDMI_FC_AVICONF2
);
990 /* AVI Data Byte 4 */
991 hdmi_writeb(hdmi
, hdmi
->vic
, HDMI_FC_AVIVID
);
993 /* AVI Data Byte 5- set up input and output pixel repetition */
994 val
= (((hdmi
->hdmi_data
.video_mode
.mpixelrepetitioninput
+ 1) <<
995 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET
) &
996 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK
) |
997 ((hdmi
->hdmi_data
.video_mode
.mpixelrepetitionoutput
<<
998 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET
) &
999 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK
);
1000 hdmi_writeb(hdmi
, val
, HDMI_FC_PRCONF
);
1002 /* IT Content and quantization range = don't care */
1003 val
= HDMI_FC_AVICONF3_IT_CONTENT_TYPE_GRAPHICS
|
1004 HDMI_FC_AVICONF3_QUANT_RANGE_LIMITED
;
1005 hdmi_writeb(hdmi
, val
, HDMI_FC_AVICONF3
);
1007 /* AVI Data Bytes 6-13 */
1008 hdmi_writeb(hdmi
, 0, HDMI_FC_AVIETB0
);
1009 hdmi_writeb(hdmi
, 0, HDMI_FC_AVIETB1
);
1010 hdmi_writeb(hdmi
, 0, HDMI_FC_AVISBB0
);
1011 hdmi_writeb(hdmi
, 0, HDMI_FC_AVISBB1
);
1012 hdmi_writeb(hdmi
, 0, HDMI_FC_AVIELB0
);
1013 hdmi_writeb(hdmi
, 0, HDMI_FC_AVIELB1
);
1014 hdmi_writeb(hdmi
, 0, HDMI_FC_AVISRB0
);
1015 hdmi_writeb(hdmi
, 0, HDMI_FC_AVISRB1
);
1018 static void hdmi_av_composer(struct dw_hdmi
*hdmi
,
1019 const struct drm_display_mode
*mode
)
1022 struct hdmi_vmode
*vmode
= &hdmi
->hdmi_data
.video_mode
;
1023 int hblank
, vblank
, h_de_hs
, v_de_vs
, hsync_len
, vsync_len
;
1025 vmode
->mhsyncpolarity
= !!(mode
->flags
& DRM_MODE_FLAG_PHSYNC
);
1026 vmode
->mvsyncpolarity
= !!(mode
->flags
& DRM_MODE_FLAG_PVSYNC
);
1027 vmode
->minterlaced
= !!(mode
->flags
& DRM_MODE_FLAG_INTERLACE
);
1028 vmode
->mpixelclock
= mode
->clock
* 1000;
1030 dev_dbg(hdmi
->dev
, "final pixclk = %d\n", vmode
->mpixelclock
);
1032 /* Set up HDMI_FC_INVIDCONF */
1033 inv_val
= (hdmi
->hdmi_data
.hdcp_enable
?
1034 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE
:
1035 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE
);
1037 inv_val
|= (vmode
->mvsyncpolarity
?
1038 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH
:
1039 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW
);
1041 inv_val
|= (vmode
->mhsyncpolarity
?
1042 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH
:
1043 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW
);
1045 inv_val
|= (vmode
->mdataenablepolarity
?
1046 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH
:
1047 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW
);
1049 if (hdmi
->vic
== 39)
1050 inv_val
|= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH
;
1052 inv_val
|= (vmode
->minterlaced
?
1053 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH
:
1054 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW
);
1056 inv_val
|= (vmode
->minterlaced
?
1057 HDMI_FC_INVIDCONF_IN_I_P_INTERLACED
:
1058 HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE
);
1060 inv_val
|= (vmode
->mdvi
?
1061 HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE
:
1062 HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE
);
1064 hdmi_writeb(hdmi
, inv_val
, HDMI_FC_INVIDCONF
);
1066 /* Set up horizontal active pixel width */
1067 hdmi_writeb(hdmi
, mode
->hdisplay
>> 8, HDMI_FC_INHACTV1
);
1068 hdmi_writeb(hdmi
, mode
->hdisplay
, HDMI_FC_INHACTV0
);
1070 /* Set up vertical active lines */
1071 hdmi_writeb(hdmi
, mode
->vdisplay
>> 8, HDMI_FC_INVACTV1
);
1072 hdmi_writeb(hdmi
, mode
->vdisplay
, HDMI_FC_INVACTV0
);
1074 /* Set up horizontal blanking pixel region width */
1075 hblank
= mode
->htotal
- mode
->hdisplay
;
1076 hdmi_writeb(hdmi
, hblank
>> 8, HDMI_FC_INHBLANK1
);
1077 hdmi_writeb(hdmi
, hblank
, HDMI_FC_INHBLANK0
);
1079 /* Set up vertical blanking pixel region width */
1080 vblank
= mode
->vtotal
- mode
->vdisplay
;
1081 hdmi_writeb(hdmi
, vblank
, HDMI_FC_INVBLANK
);
1083 /* Set up HSYNC active edge delay width (in pixel clks) */
1084 h_de_hs
= mode
->hsync_start
- mode
->hdisplay
;
1085 hdmi_writeb(hdmi
, h_de_hs
>> 8, HDMI_FC_HSYNCINDELAY1
);
1086 hdmi_writeb(hdmi
, h_de_hs
, HDMI_FC_HSYNCINDELAY0
);
1088 /* Set up VSYNC active edge delay (in lines) */
1089 v_de_vs
= mode
->vsync_start
- mode
->vdisplay
;
1090 hdmi_writeb(hdmi
, v_de_vs
, HDMI_FC_VSYNCINDELAY
);
1092 /* Set up HSYNC active pulse width (in pixel clks) */
1093 hsync_len
= mode
->hsync_end
- mode
->hsync_start
;
1094 hdmi_writeb(hdmi
, hsync_len
>> 8, HDMI_FC_HSYNCINWIDTH1
);
1095 hdmi_writeb(hdmi
, hsync_len
, HDMI_FC_HSYNCINWIDTH0
);
1097 /* Set up VSYNC active edge delay (in lines) */
1098 vsync_len
= mode
->vsync_end
- mode
->vsync_start
;
1099 hdmi_writeb(hdmi
, vsync_len
, HDMI_FC_VSYNCINWIDTH
);
1102 static void dw_hdmi_phy_disable(struct dw_hdmi
*hdmi
)
1104 if (!hdmi
->phy_enabled
)
1107 dw_hdmi_phy_enable_tmds(hdmi
, 0);
1108 dw_hdmi_phy_enable_power(hdmi
, 0);
1110 hdmi
->phy_enabled
= false;
1113 /* HDMI Initialization Step B.4 */
1114 static void dw_hdmi_enable_video_path(struct dw_hdmi
*hdmi
)
1118 /* control period minimum duration */
1119 hdmi_writeb(hdmi
, 12, HDMI_FC_CTRLDUR
);
1120 hdmi_writeb(hdmi
, 32, HDMI_FC_EXCTRLDUR
);
1121 hdmi_writeb(hdmi
, 1, HDMI_FC_EXCTRLSPAC
);
1123 /* Set to fill TMDS data channels */
1124 hdmi_writeb(hdmi
, 0x0B, HDMI_FC_CH0PREAM
);
1125 hdmi_writeb(hdmi
, 0x16, HDMI_FC_CH1PREAM
);
1126 hdmi_writeb(hdmi
, 0x21, HDMI_FC_CH2PREAM
);
1128 /* Enable pixel clock and tmds data path */
1130 clkdis
&= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE
;
1131 hdmi_writeb(hdmi
, clkdis
, HDMI_MC_CLKDIS
);
1133 clkdis
&= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE
;
1134 hdmi_writeb(hdmi
, clkdis
, HDMI_MC_CLKDIS
);
1136 /* Enable csc path */
1137 if (is_color_space_conversion(hdmi
)) {
1138 clkdis
&= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE
;
1139 hdmi_writeb(hdmi
, clkdis
, HDMI_MC_CLKDIS
);
1143 static void hdmi_enable_audio_clk(struct dw_hdmi
*hdmi
)
1145 hdmi_modb(hdmi
, 0, HDMI_MC_CLKDIS_AUDCLK_DISABLE
, HDMI_MC_CLKDIS
);
1148 /* Workaround to clear the overflow condition */
1149 static void dw_hdmi_clear_overflow(struct dw_hdmi
*hdmi
)
1154 /* TMDS software reset */
1155 hdmi_writeb(hdmi
, (u8
)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ
, HDMI_MC_SWRSTZ
);
1157 val
= hdmi_readb(hdmi
, HDMI_FC_INVIDCONF
);
1158 if (hdmi
->dev_type
== IMX6DL_HDMI
) {
1159 hdmi_writeb(hdmi
, val
, HDMI_FC_INVIDCONF
);
1163 for (count
= 0; count
< 4; count
++)
1164 hdmi_writeb(hdmi
, val
, HDMI_FC_INVIDCONF
);
1167 static void hdmi_enable_overflow_interrupts(struct dw_hdmi
*hdmi
)
1169 hdmi_writeb(hdmi
, 0, HDMI_FC_MASK2
);
1170 hdmi_writeb(hdmi
, 0, HDMI_IH_MUTE_FC_STAT2
);
1173 static void hdmi_disable_overflow_interrupts(struct dw_hdmi
*hdmi
)
1175 hdmi_writeb(hdmi
, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK
,
1176 HDMI_IH_MUTE_FC_STAT2
);
1179 static int dw_hdmi_setup(struct dw_hdmi
*hdmi
, struct drm_display_mode
*mode
)
1183 hdmi_disable_overflow_interrupts(hdmi
);
1185 hdmi
->vic
= drm_match_cea_mode(mode
);
1188 dev_dbg(hdmi
->dev
, "Non-CEA mode used in HDMI\n");
1189 hdmi
->hdmi_data
.video_mode
.mdvi
= true;
1191 dev_dbg(hdmi
->dev
, "CEA mode used vic=%d\n", hdmi
->vic
);
1192 hdmi
->hdmi_data
.video_mode
.mdvi
= false;
1195 if ((hdmi
->vic
== 6) || (hdmi
->vic
== 7) ||
1196 (hdmi
->vic
== 21) || (hdmi
->vic
== 22) ||
1197 (hdmi
->vic
== 2) || (hdmi
->vic
== 3) ||
1198 (hdmi
->vic
== 17) || (hdmi
->vic
== 18))
1199 hdmi
->hdmi_data
.colorimetry
= HDMI_COLORIMETRY_ITU_601
;
1201 hdmi
->hdmi_data
.colorimetry
= HDMI_COLORIMETRY_ITU_709
;
1203 if ((hdmi
->vic
== 10) || (hdmi
->vic
== 11) ||
1204 (hdmi
->vic
== 12) || (hdmi
->vic
== 13) ||
1205 (hdmi
->vic
== 14) || (hdmi
->vic
== 15) ||
1206 (hdmi
->vic
== 25) || (hdmi
->vic
== 26) ||
1207 (hdmi
->vic
== 27) || (hdmi
->vic
== 28) ||
1208 (hdmi
->vic
== 29) || (hdmi
->vic
== 30) ||
1209 (hdmi
->vic
== 35) || (hdmi
->vic
== 36) ||
1210 (hdmi
->vic
== 37) || (hdmi
->vic
== 38))
1211 hdmi
->hdmi_data
.video_mode
.mpixelrepetitionoutput
= 1;
1213 hdmi
->hdmi_data
.video_mode
.mpixelrepetitionoutput
= 0;
1215 hdmi
->hdmi_data
.video_mode
.mpixelrepetitioninput
= 0;
1217 /* TODO: Get input format from IPU (via FB driver interface) */
1218 hdmi
->hdmi_data
.enc_in_format
= RGB
;
1220 hdmi
->hdmi_data
.enc_out_format
= RGB
;
1222 hdmi
->hdmi_data
.enc_color_depth
= 8;
1223 hdmi
->hdmi_data
.pix_repet_factor
= 0;
1224 hdmi
->hdmi_data
.hdcp_enable
= 0;
1225 hdmi
->hdmi_data
.video_mode
.mdataenablepolarity
= true;
1227 /* HDMI Initialization Step B.1 */
1228 hdmi_av_composer(hdmi
, mode
);
1230 /* HDMI Initializateion Step B.2 */
1231 ret
= dw_hdmi_phy_init(hdmi
);
1235 /* HDMI Initialization Step B.3 */
1236 dw_hdmi_enable_video_path(hdmi
);
1238 /* not for DVI mode */
1239 if (hdmi
->hdmi_data
.video_mode
.mdvi
) {
1240 dev_dbg(hdmi
->dev
, "%s DVI mode\n", __func__
);
1242 dev_dbg(hdmi
->dev
, "%s CEA mode\n", __func__
);
1244 /* HDMI Initialization Step E - Configure audio */
1245 hdmi_clk_regenerator_update_pixel_clock(hdmi
);
1246 hdmi_enable_audio_clk(hdmi
);
1248 /* HDMI Initialization Step F - Configure AVI InfoFrame */
1249 hdmi_config_AVI(hdmi
);
1252 hdmi_video_packetize(hdmi
);
1253 hdmi_video_csc(hdmi
);
1254 hdmi_video_sample(hdmi
);
1255 hdmi_tx_hdcp_config(hdmi
);
1257 dw_hdmi_clear_overflow(hdmi
);
1258 if (hdmi
->cable_plugin
&& !hdmi
->hdmi_data
.video_mode
.mdvi
)
1259 hdmi_enable_overflow_interrupts(hdmi
);
1264 /* Wait until we are registered to enable interrupts */
1265 static int dw_hdmi_fb_registered(struct dw_hdmi
*hdmi
)
1267 hdmi_writeb(hdmi
, HDMI_PHY_I2CM_INT_ADDR_DONE_POL
,
1268 HDMI_PHY_I2CM_INT_ADDR
);
1270 hdmi_writeb(hdmi
, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL
|
1271 HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL
,
1272 HDMI_PHY_I2CM_CTLINT_ADDR
);
1274 /* enable cable hot plug irq */
1275 hdmi_writeb(hdmi
, (u8
)~HDMI_PHY_HPD
, HDMI_PHY_MASK0
);
1277 /* Clear Hotplug interrupts */
1278 hdmi_writeb(hdmi
, HDMI_IH_PHY_STAT0_HPD
, HDMI_IH_PHY_STAT0
);
1283 static void initialize_hdmi_ih_mutes(struct dw_hdmi
*hdmi
)
1288 * Boot up defaults are:
1289 * HDMI_IH_MUTE = 0x03 (disabled)
1290 * HDMI_IH_MUTE_* = 0x00 (enabled)
1292 * Disable top level interrupt bits in HDMI block
1294 ih_mute
= hdmi_readb(hdmi
, HDMI_IH_MUTE
) |
1295 HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT
|
1296 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT
;
1298 hdmi_writeb(hdmi
, ih_mute
, HDMI_IH_MUTE
);
1300 /* by default mask all interrupts */
1301 hdmi_writeb(hdmi
, 0xff, HDMI_VP_MASK
);
1302 hdmi_writeb(hdmi
, 0xff, HDMI_FC_MASK0
);
1303 hdmi_writeb(hdmi
, 0xff, HDMI_FC_MASK1
);
1304 hdmi_writeb(hdmi
, 0xff, HDMI_FC_MASK2
);
1305 hdmi_writeb(hdmi
, 0xff, HDMI_PHY_MASK0
);
1306 hdmi_writeb(hdmi
, 0xff, HDMI_PHY_I2CM_INT_ADDR
);
1307 hdmi_writeb(hdmi
, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR
);
1308 hdmi_writeb(hdmi
, 0xff, HDMI_AUD_INT
);
1309 hdmi_writeb(hdmi
, 0xff, HDMI_AUD_SPDIFINT
);
1310 hdmi_writeb(hdmi
, 0xff, HDMI_AUD_HBR_MASK
);
1311 hdmi_writeb(hdmi
, 0xff, HDMI_GP_MASK
);
1312 hdmi_writeb(hdmi
, 0xff, HDMI_A_APIINTMSK
);
1313 hdmi_writeb(hdmi
, 0xff, HDMI_CEC_MASK
);
1314 hdmi_writeb(hdmi
, 0xff, HDMI_I2CM_INT
);
1315 hdmi_writeb(hdmi
, 0xff, HDMI_I2CM_CTLINT
);
1317 /* Disable interrupts in the IH_MUTE_* registers */
1318 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_FC_STAT0
);
1319 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_FC_STAT1
);
1320 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_FC_STAT2
);
1321 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_AS_STAT0
);
1322 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_PHY_STAT0
);
1323 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_I2CM_STAT0
);
1324 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_CEC_STAT0
);
1325 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_VP_STAT0
);
1326 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0
);
1327 hdmi_writeb(hdmi
, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0
);
1329 /* Enable top level interrupt bits in HDMI block */
1330 ih_mute
&= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT
|
1331 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT
);
1332 hdmi_writeb(hdmi
, ih_mute
, HDMI_IH_MUTE
);
1335 static void dw_hdmi_poweron(struct dw_hdmi
*hdmi
)
1337 dw_hdmi_setup(hdmi
, &hdmi
->previous_mode
);
1340 static void dw_hdmi_poweroff(struct dw_hdmi
*hdmi
)
1342 dw_hdmi_phy_disable(hdmi
);
1345 static void dw_hdmi_bridge_mode_set(struct drm_bridge
*bridge
,
1346 struct drm_display_mode
*orig_mode
,
1347 struct drm_display_mode
*mode
)
1349 struct dw_hdmi
*hdmi
= bridge
->driver_private
;
1351 dw_hdmi_setup(hdmi
, mode
);
1353 /* Store the display mode for plugin/DKMS poweron events */
1354 memcpy(&hdmi
->previous_mode
, mode
, sizeof(hdmi
->previous_mode
));
1357 static bool dw_hdmi_bridge_mode_fixup(struct drm_bridge
*bridge
,
1358 const struct drm_display_mode
*mode
,
1359 struct drm_display_mode
*adjusted_mode
)
1364 static void dw_hdmi_bridge_disable(struct drm_bridge
*bridge
)
1366 struct dw_hdmi
*hdmi
= bridge
->driver_private
;
1368 dw_hdmi_poweroff(hdmi
);
1371 static void dw_hdmi_bridge_enable(struct drm_bridge
*bridge
)
1373 struct dw_hdmi
*hdmi
= bridge
->driver_private
;
1375 dw_hdmi_poweron(hdmi
);
1378 static void dw_hdmi_bridge_nop(struct drm_bridge
*bridge
)
1383 static enum drm_connector_status
1384 dw_hdmi_connector_detect(struct drm_connector
*connector
, bool force
)
1386 struct dw_hdmi
*hdmi
= container_of(connector
, struct dw_hdmi
,
1389 return hdmi_readb(hdmi
, HDMI_PHY_STAT0
) & HDMI_PHY_HPD
?
1390 connector_status_connected
: connector_status_disconnected
;
1393 static int dw_hdmi_connector_get_modes(struct drm_connector
*connector
)
1395 struct dw_hdmi
*hdmi
= container_of(connector
, struct dw_hdmi
,
1403 edid
= drm_get_edid(connector
, hdmi
->ddc
);
1405 dev_dbg(hdmi
->dev
, "got edid: width[%d] x height[%d]\n",
1406 edid
->width_cm
, edid
->height_cm
);
1408 drm_mode_connector_update_edid_property(connector
, edid
);
1409 ret
= drm_add_edid_modes(connector
, edid
);
1412 dev_dbg(hdmi
->dev
, "failed to get edid\n");
1418 static enum drm_mode_status
1419 dw_hdmi_connector_mode_valid(struct drm_connector
*connector
,
1420 struct drm_display_mode
*mode
)
1422 struct dw_hdmi
*hdmi
= container_of(connector
,
1423 struct dw_hdmi
, connector
);
1424 enum drm_mode_status mode_status
= MODE_OK
;
1426 if (hdmi
->plat_data
->mode_valid
)
1427 mode_status
= hdmi
->plat_data
->mode_valid(connector
, mode
);
1432 static struct drm_encoder
*dw_hdmi_connector_best_encoder(struct drm_connector
1435 struct dw_hdmi
*hdmi
= container_of(connector
, struct dw_hdmi
,
1438 return hdmi
->encoder
;
1441 static void dw_hdmi_connector_destroy(struct drm_connector
*connector
)
1443 drm_connector_unregister(connector
);
1444 drm_connector_cleanup(connector
);
1447 static struct drm_connector_funcs dw_hdmi_connector_funcs
= {
1448 .dpms
= drm_helper_connector_dpms
,
1449 .fill_modes
= drm_helper_probe_single_connector_modes
,
1450 .detect
= dw_hdmi_connector_detect
,
1451 .destroy
= dw_hdmi_connector_destroy
,
1454 static struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs
= {
1455 .get_modes
= dw_hdmi_connector_get_modes
,
1456 .mode_valid
= dw_hdmi_connector_mode_valid
,
1457 .best_encoder
= dw_hdmi_connector_best_encoder
,
1460 struct drm_bridge_funcs dw_hdmi_bridge_funcs
= {
1461 .enable
= dw_hdmi_bridge_enable
,
1462 .disable
= dw_hdmi_bridge_disable
,
1463 .pre_enable
= dw_hdmi_bridge_nop
,
1464 .post_disable
= dw_hdmi_bridge_nop
,
1465 .mode_set
= dw_hdmi_bridge_mode_set
,
1466 .mode_fixup
= dw_hdmi_bridge_mode_fixup
,
1469 static irqreturn_t
dw_hdmi_hardirq(int irq
, void *dev_id
)
1471 struct dw_hdmi
*hdmi
= dev_id
;
1474 intr_stat
= hdmi_readb(hdmi
, HDMI_IH_PHY_STAT0
);
1476 hdmi_writeb(hdmi
, ~0, HDMI_IH_MUTE_PHY_STAT0
);
1478 return intr_stat
? IRQ_WAKE_THREAD
: IRQ_NONE
;
1481 static irqreturn_t
dw_hdmi_irq(int irq
, void *dev_id
)
1483 struct dw_hdmi
*hdmi
= dev_id
;
1487 intr_stat
= hdmi_readb(hdmi
, HDMI_IH_PHY_STAT0
);
1489 phy_int_pol
= hdmi_readb(hdmi
, HDMI_PHY_POL0
);
1491 if (intr_stat
& HDMI_IH_PHY_STAT0_HPD
) {
1492 if (phy_int_pol
& HDMI_PHY_HPD
) {
1493 dev_dbg(hdmi
->dev
, "EVENT=plugin\n");
1495 hdmi_modb(hdmi
, 0, HDMI_PHY_HPD
, HDMI_PHY_POL0
);
1497 dw_hdmi_poweron(hdmi
);
1499 dev_dbg(hdmi
->dev
, "EVENT=plugout\n");
1501 hdmi_modb(hdmi
, HDMI_PHY_HPD
, HDMI_PHY_HPD
,
1504 dw_hdmi_poweroff(hdmi
);
1506 drm_helper_hpd_irq_event(hdmi
->connector
.dev
);
1509 hdmi_writeb(hdmi
, intr_stat
, HDMI_IH_PHY_STAT0
);
1510 hdmi_writeb(hdmi
, ~HDMI_IH_PHY_STAT0_HPD
, HDMI_IH_MUTE_PHY_STAT0
);
1515 static int dw_hdmi_register(struct drm_device
*drm
, struct dw_hdmi
*hdmi
)
1517 struct drm_encoder
*encoder
= hdmi
->encoder
;
1518 struct drm_bridge
*bridge
;
1521 bridge
= devm_kzalloc(drm
->dev
, sizeof(*bridge
), GFP_KERNEL
);
1523 DRM_ERROR("Failed to allocate drm bridge\n");
1527 hdmi
->bridge
= bridge
;
1528 bridge
->driver_private
= hdmi
;
1529 bridge
->funcs
= &dw_hdmi_bridge_funcs
;
1530 ret
= drm_bridge_attach(drm
, bridge
);
1532 DRM_ERROR("Failed to initialize bridge with drm\n");
1536 encoder
->bridge
= bridge
;
1537 hdmi
->connector
.polled
= DRM_CONNECTOR_POLL_HPD
;
1539 drm_connector_helper_add(&hdmi
->connector
,
1540 &dw_hdmi_connector_helper_funcs
);
1541 drm_connector_init(drm
, &hdmi
->connector
, &dw_hdmi_connector_funcs
,
1542 DRM_MODE_CONNECTOR_HDMIA
);
1544 hdmi
->connector
.encoder
= encoder
;
1546 drm_mode_connector_attach_encoder(&hdmi
->connector
, encoder
);
1551 int dw_hdmi_bind(struct device
*dev
, struct device
*master
,
1552 void *data
, struct drm_encoder
*encoder
,
1553 struct resource
*iores
, int irq
,
1554 const struct dw_hdmi_plat_data
*plat_data
)
1556 struct drm_device
*drm
= data
;
1557 struct device_node
*np
= dev
->of_node
;
1558 struct device_node
*ddc_node
;
1559 struct dw_hdmi
*hdmi
;
1563 hdmi
= devm_kzalloc(dev
, sizeof(*hdmi
), GFP_KERNEL
);
1567 hdmi
->plat_data
= plat_data
;
1569 hdmi
->dev_type
= plat_data
->dev_type
;
1570 hdmi
->sample_rate
= 48000;
1572 hdmi
->encoder
= encoder
;
1574 mutex_init(&hdmi
->audio_mutex
);
1576 of_property_read_u32(np
, "reg-io-width", &val
);
1580 hdmi
->write
= dw_hdmi_writel
;
1581 hdmi
->read
= dw_hdmi_readl
;
1584 hdmi
->write
= dw_hdmi_writeb
;
1585 hdmi
->read
= dw_hdmi_readb
;
1588 dev_err(dev
, "reg-io-width must be 1 or 4\n");
1592 ddc_node
= of_parse_phandle(np
, "ddc-i2c-bus", 0);
1594 hdmi
->ddc
= of_find_i2c_adapter_by_node(ddc_node
);
1595 of_node_put(ddc_node
);
1597 dev_dbg(hdmi
->dev
, "failed to read ddc node\n");
1598 return -EPROBE_DEFER
;
1602 dev_dbg(hdmi
->dev
, "no ddc property found\n");
1605 hdmi
->regs
= devm_ioremap_resource(dev
, iores
);
1606 if (IS_ERR(hdmi
->regs
))
1607 return PTR_ERR(hdmi
->regs
);
1609 hdmi
->isfr_clk
= devm_clk_get(hdmi
->dev
, "isfr");
1610 if (IS_ERR(hdmi
->isfr_clk
)) {
1611 ret
= PTR_ERR(hdmi
->isfr_clk
);
1612 dev_err(hdmi
->dev
, "Unable to get HDMI isfr clk: %d\n", ret
);
1616 ret
= clk_prepare_enable(hdmi
->isfr_clk
);
1618 dev_err(hdmi
->dev
, "Cannot enable HDMI isfr clock: %d\n", ret
);
1622 hdmi
->iahb_clk
= devm_clk_get(hdmi
->dev
, "iahb");
1623 if (IS_ERR(hdmi
->iahb_clk
)) {
1624 ret
= PTR_ERR(hdmi
->iahb_clk
);
1625 dev_err(hdmi
->dev
, "Unable to get HDMI iahb clk: %d\n", ret
);
1629 ret
= clk_prepare_enable(hdmi
->iahb_clk
);
1631 dev_err(hdmi
->dev
, "Cannot enable HDMI iahb clock: %d\n", ret
);
1635 /* Product and revision IDs */
1637 "Detected HDMI controller 0x%x:0x%x:0x%x:0x%x\n",
1638 hdmi_readb(hdmi
, HDMI_DESIGN_ID
),
1639 hdmi_readb(hdmi
, HDMI_REVISION_ID
),
1640 hdmi_readb(hdmi
, HDMI_PRODUCT_ID0
),
1641 hdmi_readb(hdmi
, HDMI_PRODUCT_ID1
));
1643 initialize_hdmi_ih_mutes(hdmi
);
1645 ret
= devm_request_threaded_irq(dev
, irq
, dw_hdmi_hardirq
,
1646 dw_hdmi_irq
, IRQF_SHARED
,
1647 dev_name(dev
), hdmi
);
1652 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
1653 * N and cts values before enabling phy
1655 hdmi_init_clk_regenerator(hdmi
);
1658 * Configure registers related to HDMI interrupt
1659 * generation before registering IRQ.
1661 hdmi_writeb(hdmi
, HDMI_PHY_HPD
, HDMI_PHY_POL0
);
1663 /* Clear Hotplug interrupts */
1664 hdmi_writeb(hdmi
, HDMI_IH_PHY_STAT0_HPD
, HDMI_IH_PHY_STAT0
);
1666 ret
= dw_hdmi_fb_registered(hdmi
);
1670 ret
= dw_hdmi_register(drm
, hdmi
);
1674 /* Unmute interrupts */
1675 hdmi_writeb(hdmi
, ~HDMI_IH_PHY_STAT0_HPD
, HDMI_IH_MUTE_PHY_STAT0
);
1677 dev_set_drvdata(dev
, hdmi
);
1682 clk_disable_unprepare(hdmi
->iahb_clk
);
1684 clk_disable_unprepare(hdmi
->isfr_clk
);
1688 EXPORT_SYMBOL_GPL(dw_hdmi_bind
);
1690 void dw_hdmi_unbind(struct device
*dev
, struct device
*master
, void *data
)
1692 struct dw_hdmi
*hdmi
= dev_get_drvdata(dev
);
1694 /* Disable all interrupts */
1695 hdmi_writeb(hdmi
, ~0, HDMI_IH_MUTE_PHY_STAT0
);
1697 hdmi
->connector
.funcs
->destroy(&hdmi
->connector
);
1698 hdmi
->encoder
->funcs
->destroy(hdmi
->encoder
);
1700 clk_disable_unprepare(hdmi
->iahb_clk
);
1701 clk_disable_unprepare(hdmi
->isfr_clk
);
1702 i2c_put_adapter(hdmi
->ddc
);
1704 EXPORT_SYMBOL_GPL(dw_hdmi_unbind
);
1706 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
1707 MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
1708 MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
1709 MODULE_DESCRIPTION("DW HDMI transmitter driver");
1710 MODULE_LICENSE("GPL");
1711 MODULE_ALIAS("platform:dw-hdmi");