2 * DesignWare High-Definition Multimedia Interface (HDMI) driver
4 * Copyright (C) 2013-2015 Mentor Graphics Inc.
5 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
6 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * Designware High-Definition Multimedia Interface (HDMI) driver
16 #include <linux/module.h>
17 #include <linux/irq.h>
18 #include <linux/delay.h>
19 #include <linux/err.h>
20 #include <linux/clk.h>
21 #include <linux/hdmi.h>
22 #include <linux/mutex.h>
23 #include <linux/of_device.h>
24 #include <linux/spinlock.h>
26 #include <drm/drm_of.h>
28 #include <drm/drm_atomic_helper.h>
29 #include <drm/drm_crtc_helper.h>
30 #include <drm/drm_edid.h>
31 #include <drm/drm_encoder_slave.h>
32 #include <drm/bridge/dw_hdmi.h>
34 #include <linux/switch.h>
38 #include "dw-hdmi-audio.h"
40 #define HDMI_EDID_LEN 512
44 #define YCBCR422_16BITS 2
45 #define YCBCR422_8BITS 3
63 * Unless otherwise noted, entries in this table are 100% optimization.
64 * Values can be obtained from hdmi_compute_n() but that function is
65 * slow so we pre-compute values we expect to see.
67 * All 32k and 48k values are expected to be the same (due to the way
68 * the math works) for any rate that's an exact kHz.
70 static const struct dw_hdmi_audio_tmds_n common_tmds_n_table[] = {
71 { .tmds = 25175000, .n_32k = 4096, .n_44k1 = 12854, .n_48k = 6144, },
72 { .tmds = 25200000, .n_32k = 4096, .n_44k1 = 5656, .n_48k = 6144, },
73 { .tmds = 27000000, .n_32k = 4096, .n_44k1 = 5488, .n_48k = 6144, },
74 { .tmds = 28320000, .n_32k = 4096, .n_44k1 = 5586, .n_48k = 6144, },
75 { .tmds = 30240000, .n_32k = 4096, .n_44k1 = 5642, .n_48k = 6144, },
76 { .tmds = 31500000, .n_32k = 4096, .n_44k1 = 5600, .n_48k = 6144, },
77 { .tmds = 32000000, .n_32k = 4096, .n_44k1 = 5733, .n_48k = 6144, },
78 { .tmds = 33750000, .n_32k = 4096, .n_44k1 = 6272, .n_48k = 6144, },
79 { .tmds = 36000000, .n_32k = 4096, .n_44k1 = 5684, .n_48k = 6144, },
80 { .tmds = 40000000, .n_32k = 4096, .n_44k1 = 5733, .n_48k = 6144, },
81 { .tmds = 49500000, .n_32k = 4096, .n_44k1 = 5488, .n_48k = 6144, },
82 { .tmds = 50000000, .n_32k = 4096, .n_44k1 = 5292, .n_48k = 6144, },
83 { .tmds = 54000000, .n_32k = 4096, .n_44k1 = 5684, .n_48k = 6144, },
84 { .tmds = 65000000, .n_32k = 4096, .n_44k1 = 7056, .n_48k = 6144, },
85 { .tmds = 68250000, .n_32k = 4096, .n_44k1 = 5376, .n_48k = 6144, },
86 { .tmds = 71000000, .n_32k = 4096, .n_44k1 = 7056, .n_48k = 6144, },
87 { .tmds = 72000000, .n_32k = 4096, .n_44k1 = 5635, .n_48k = 6144, },
88 { .tmds = 73250000, .n_32k = 4096, .n_44k1 = 14112, .n_48k = 6144, },
89 { .tmds = 74250000, .n_32k = 4096, .n_44k1 = 6272, .n_48k = 6144, },
90 { .tmds = 75000000, .n_32k = 4096, .n_44k1 = 5880, .n_48k = 6144, },
91 { .tmds = 78750000, .n_32k = 4096, .n_44k1 = 5600, .n_48k = 6144, },
92 { .tmds = 78800000, .n_32k = 4096, .n_44k1 = 5292, .n_48k = 6144, },
93 { .tmds = 79500000, .n_32k = 4096, .n_44k1 = 4704, .n_48k = 6144, },
94 { .tmds = 83500000, .n_32k = 4096, .n_44k1 = 7056, .n_48k = 6144, },
95 { .tmds = 85500000, .n_32k = 4096, .n_44k1 = 5488, .n_48k = 6144, },
96 { .tmds = 88750000, .n_32k = 4096, .n_44k1 = 14112, .n_48k = 6144, },
97 { .tmds = 97750000, .n_32k = 4096, .n_44k1 = 14112, .n_48k = 6144, },
98 { .tmds = 101000000, .n_32k = 4096, .n_44k1 = 7056, .n_48k = 6144, },
99 { .tmds = 106500000, .n_32k = 4096, .n_44k1 = 4704, .n_48k = 6144, },
100 { .tmds = 108000000, .n_32k = 4096, .n_44k1 = 5684, .n_48k = 6144, },
101 { .tmds = 115500000, .n_32k = 4096, .n_44k1 = 5712, .n_48k = 6144, },
102 { .tmds = 119000000, .n_32k = 4096, .n_44k1 = 5544, .n_48k = 6144, },
103 { .tmds = 135000000, .n_32k = 4096, .n_44k1 = 5488, .n_48k = 6144, },
104 { .tmds = 146250000, .n_32k = 4096, .n_44k1 = 6272, .n_48k = 6144, },
105 { .tmds = 148500000, .n_32k = 4096, .n_44k1 = 5488, .n_48k = 6144, },
106 { .tmds = 154000000, .n_32k = 4096, .n_44k1 = 5544, .n_48k = 6144, },
107 { .tmds = 162000000, .n_32k = 4096, .n_44k1 = 5684, .n_48k = 6144, },
109 /* For 297 MHz+ HDMI spec have some other rule for setting N */
110 { .tmds = 297000000, .n_32k = 3073, .n_44k1 = 4704, .n_48k = 5120, },
111 { .tmds = 594000000, .n_32k = 3073, .n_44k1 = 9408, .n_48k = 10240, },
114 { .tmds = 0, .n_32k = 0, .n_44k1 = 0, .n_48k = 0, },
118 static const u16 csc_coeff_default[3][4] = {
119 { 0x2000, 0x0000, 0x0000, 0x0000 },
120 { 0x0000, 0x2000, 0x0000, 0x0000 },
121 { 0x0000, 0x0000, 0x2000, 0x0000 }
124 static const u16 csc_coeff_rgb_out_eitu601[3][4] = {
125 { 0x2000, 0x6926, 0x74fd, 0x010e },
126 { 0x2000, 0x2cdd, 0x0000, 0x7e9a },
127 { 0x2000, 0x0000, 0x38b4, 0x7e3b }
130 static const u16 csc_coeff_rgb_out_eitu709[3][4] = {
131 { 0x2000, 0x7106, 0x7a02, 0x00a7 },
132 { 0x2000, 0x3264, 0x0000, 0x7e6d },
133 { 0x2000, 0x0000, 0x3b61, 0x7e25 }
136 static const u16 csc_coeff_rgb_in_eitu601[3][4] = {
137 { 0x2591, 0x1322, 0x074b, 0x0000 },
138 { 0x6535, 0x2000, 0x7acc, 0x0200 },
139 { 0x6acd, 0x7534, 0x2000, 0x0200 }
142 static const u16 csc_coeff_rgb_in_eitu709[3][4] = {
143 { 0x2dc5, 0x0d9b, 0x049e, 0x0000 },
144 { 0x62f0, 0x2000, 0x7d11, 0x0200 },
145 { 0x6756, 0x78ab, 0x2000, 0x0200 }
149 bool mdataenablepolarity;
151 unsigned int mpixelclock;
152 unsigned int mpixelrepetitioninput;
153 unsigned int mpixelrepetitionoutput;
156 struct hdmi_data_info {
157 unsigned int enc_in_format;
158 unsigned int enc_out_format;
159 unsigned int enc_color_depth;
160 unsigned int colorimetry;
161 unsigned int pix_repet_factor;
162 unsigned int hdcp_enable;
163 struct hdmi_vmode video_mode;
167 struct i2c_adapter adap;
170 struct completion cmp;
178 struct drm_connector connector;
179 struct drm_encoder *encoder;
180 struct drm_bridge *bridge;
182 struct platform_device *audio;
183 enum dw_hdmi_devtype dev_type;
185 struct clk *isfr_clk;
186 struct clk *iahb_clk;
187 struct dw_hdmi_i2c *i2c;
189 struct hdmi_data_info hdmi_data;
190 const struct dw_hdmi_plat_data *plat_data;
194 u8 edid[HDMI_EDID_LEN];
198 struct drm_display_mode previous_mode;
200 struct i2c_adapter *ddc;
205 struct mutex mutex; /* for state below and previous_mode */
206 enum drm_connector_force force; /* mutex-protected force state */
207 bool disabled; /* DRM has disabled our bridge */
208 bool bridge_is_on; /* indicates the bridge is on */
209 bool rxsense; /* rxsense state */
210 u8 phy_mask; /* desired phy int mask settings */
212 spinlock_t audio_lock;
213 struct mutex audio_mutex;
214 unsigned int sample_rate;
215 unsigned int audio_cts;
216 unsigned int audio_n;
220 struct switch_dev switchdev;
223 void (*write)(struct dw_hdmi *hdmi, u8 val, int offset);
224 u8 (*read)(struct dw_hdmi *hdmi, int offset);
227 #define HDMI_IH_PHY_STAT0_RX_SENSE \
228 (HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \
229 HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3)
231 #define HDMI_PHY_RX_SENSE \
232 (HDMI_PHY_RX_SENSE0 | HDMI_PHY_RX_SENSE1 | \
233 HDMI_PHY_RX_SENSE2 | HDMI_PHY_RX_SENSE3)
235 static void dw_hdmi_writel(struct dw_hdmi *hdmi, u8 val, int offset)
237 writel(val, hdmi->regs + (offset << 2));
240 static u8 dw_hdmi_readl(struct dw_hdmi *hdmi, int offset)
242 return readl(hdmi->regs + (offset << 2));
245 static void dw_hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset)
247 writeb(val, hdmi->regs + offset);
250 static u8 dw_hdmi_readb(struct dw_hdmi *hdmi, int offset)
252 return readb(hdmi->regs + offset);
255 static inline void hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset)
257 hdmi->write(hdmi, val, offset);
260 static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset)
262 return hdmi->read(hdmi, offset);
265 static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg)
267 u8 val = hdmi_readb(hdmi, reg) & ~mask;
270 hdmi_writeb(hdmi, val, reg);
273 static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg,
276 hdmi_modb(hdmi, data << shift, mask, reg);
279 static void dw_hdmi_i2c_init(struct dw_hdmi *hdmi)
282 hdmi_writeb(hdmi, 0x00, HDMI_I2CM_SOFTRSTZ);
284 /* Set Standard Mode speed */
285 hdmi_modb(hdmi, HDMI_I2CM_DIV_STD_MODE,
286 HDMI_I2CM_DIV_FAST_STD_MODE, HDMI_I2CM_DIV);
288 /* Set done, not acknowledged and arbitration interrupt polarities */
289 hdmi_writeb(hdmi, HDMI_I2CM_INT_DONE_POL, HDMI_I2CM_INT);
290 hdmi_writeb(hdmi, HDMI_I2CM_CTLINT_NAC_POL | HDMI_I2CM_CTLINT_ARB_POL,
293 /* Clear DONE and ERROR interrupts */
294 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
297 /* Mute DONE and ERROR interrupts */
298 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
299 HDMI_IH_MUTE_I2CM_STAT0);
302 static int dw_hdmi_i2c_read(struct dw_hdmi *hdmi,
303 unsigned char *buf, unsigned int length)
305 struct dw_hdmi_i2c *i2c = hdmi->i2c;
308 if (!i2c->is_regaddr) {
309 dev_dbg(hdmi->dev, "set read register address to 0\n");
310 i2c->slave_reg = 0x00;
311 i2c->is_regaddr = true;
315 reinit_completion(&i2c->cmp);
317 hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
318 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ,
319 HDMI_I2CM_OPERATION);
321 stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
325 /* Check for error condition on the bus */
326 if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR)
329 *buf++ = hdmi_readb(hdmi, HDMI_I2CM_DATAI);
335 static int dw_hdmi_i2c_write(struct dw_hdmi *hdmi,
336 unsigned char *buf, unsigned int length)
338 struct dw_hdmi_i2c *i2c = hdmi->i2c;
341 if (!i2c->is_regaddr) {
342 /* Use the first write byte as register address */
343 i2c->slave_reg = buf[0];
346 i2c->is_regaddr = true;
350 reinit_completion(&i2c->cmp);
352 hdmi_writeb(hdmi, *buf++, HDMI_I2CM_DATAO);
353 hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
354 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_WRITE,
355 HDMI_I2CM_OPERATION);
357 stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
361 /* Check for error condition on the bus */
362 if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR)
369 static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap,
370 struct i2c_msg *msgs, int num)
372 struct dw_hdmi *hdmi = i2c_get_adapdata(adap);
373 struct dw_hdmi_i2c *i2c = hdmi->i2c;
374 u8 addr = msgs[0].addr;
377 dev_dbg(hdmi->dev, "xfer: num: %d, addr: %#x\n", num, addr);
379 for (i = 0; i < num; i++) {
380 if (msgs[i].addr != addr) {
382 "unsupported transfer, changed slave address\n");
386 if (msgs[i].len == 0) {
388 "unsupported transfer %d/%d, no data\n",
394 mutex_lock(&i2c->lock);
396 hdmi_writeb(hdmi, 0x00, HDMI_IH_MUTE_I2CM_STAT0);
398 /* Set slave device address taken from the first I2C message */
399 hdmi_writeb(hdmi, addr, HDMI_I2CM_SLAVE);
401 /* Set slave device register address on transfer */
402 i2c->is_regaddr = false;
404 for (i = 0; i < num; i++) {
405 dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n",
406 i + 1, num, msgs[i].len, msgs[i].flags);
408 if (msgs[i].flags & I2C_M_RD)
409 ret = dw_hdmi_i2c_read(hdmi, msgs[i].buf, msgs[i].len);
411 ret = dw_hdmi_i2c_write(hdmi, msgs[i].buf, msgs[i].len);
420 /* Mute DONE and ERROR interrupts */
421 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
422 HDMI_IH_MUTE_I2CM_STAT0);
424 mutex_unlock(&i2c->lock);
429 static u32 dw_hdmi_i2c_func(struct i2c_adapter *adapter)
431 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
434 static const struct i2c_algorithm dw_hdmi_algorithm = {
435 .master_xfer = dw_hdmi_i2c_xfer,
436 .functionality = dw_hdmi_i2c_func,
439 static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi)
441 struct i2c_adapter *adap;
442 struct dw_hdmi_i2c *i2c;
445 i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
447 return ERR_PTR(-ENOMEM);
449 mutex_init(&i2c->lock);
450 init_completion(&i2c->cmp);
453 adap->class = I2C_CLASS_DDC;
454 adap->owner = THIS_MODULE;
455 adap->dev.parent = hdmi->dev;
456 adap->dev.of_node = hdmi->dev->of_node;
457 adap->algo = &dw_hdmi_algorithm;
458 strlcpy(adap->name, "DesignWare HDMI", sizeof(adap->name));
459 i2c_set_adapdata(adap, hdmi);
461 ret = i2c_add_adapter(adap);
463 dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
464 devm_kfree(hdmi->dev, i2c);
470 dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name);
475 static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts,
478 /* Must be set/cleared first */
479 hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
481 /* nshift factor = 0 */
482 hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);
484 hdmi_writeb(hdmi, ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) |
485 HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
486 hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
487 hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1);
489 hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3);
490 hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
491 hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1);
494 static int hdmi_match_tmds_n_table(struct dw_hdmi *hdmi,
495 unsigned long pixel_clk,
498 const struct dw_hdmi_plat_data *plat_data = hdmi->plat_data;
499 const struct dw_hdmi_audio_tmds_n *tmds_n = NULL;
502 if (plat_data->tmds_n_table) {
503 for (i = 0; plat_data->tmds_n_table[i].tmds != 0; i++) {
504 if (pixel_clk == plat_data->tmds_n_table[i].tmds) {
505 tmds_n = &plat_data->tmds_n_table[i];
511 if (tmds_n == NULL) {
512 for (i = 0; common_tmds_n_table[i].tmds != 0; i++) {
513 if (pixel_clk == common_tmds_n_table[i].tmds) {
514 tmds_n = &common_tmds_n_table[i];
525 return tmds_n->n_32k;
529 return (freq / 44100) * tmds_n->n_44k1;
533 return (freq / 48000) * tmds_n->n_48k;
539 static u64 hdmi_audio_math_diff(unsigned int freq, unsigned int n,
540 unsigned int pixel_clk)
545 final = (u64)pixel_clk * n;
548 do_div(cts, 128 * freq);
550 diff = final - (u64)cts * (128 * freq);
555 static unsigned int hdmi_compute_n(struct dw_hdmi *hdmi,
556 unsigned long pixel_clk,
559 unsigned int min_n = DIV_ROUND_UP((128 * freq), 1500);
560 unsigned int max_n = (128 * freq) / 300;
561 unsigned int ideal_n = (128 * freq) / 1000;
562 unsigned int best_n_distance = ideal_n;
563 unsigned int best_n = 0;
564 u64 best_diff = U64_MAX;
567 /* If the ideal N could satisfy the audio math, then just take it */
568 if (hdmi_audio_math_diff(freq, ideal_n, pixel_clk) == 0)
571 for (n = min_n; n <= max_n; n++) {
572 u64 diff = hdmi_audio_math_diff(freq, n, pixel_clk);
574 if (diff < best_diff || (diff == best_diff &&
575 abs(n - ideal_n) < best_n_distance)) {
578 best_n_distance = abs(best_n - ideal_n);
582 * The best N already satisfy the audio math, and also be
583 * the closest value to ideal N, so just cut the loop.
585 if ((best_diff == 0) && (abs(n - ideal_n) > best_n_distance))
592 static unsigned int hdmi_find_n(struct dw_hdmi *hdmi, unsigned long pixel_clk,
593 unsigned long sample_rate)
597 n = hdmi_match_tmds_n_table(hdmi, pixel_clk, sample_rate);
601 dev_warn(hdmi->dev, "Rate %lu missing; compute N dynamically\n",
604 return hdmi_compute_n(hdmi, pixel_clk, sample_rate);
607 static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
608 unsigned long pixel_clk, unsigned int sample_rate)
610 unsigned long ftdms = pixel_clk;
614 n = hdmi_find_n(hdmi, pixel_clk, sample_rate);
617 * Compute the CTS value from the N value. Note that CTS and N
618 * can be up to 20 bits in total, so we need 64-bit math. Also
619 * note that our TDMS clock is not fully accurate; it is accurate
620 * to kHz. This can introduce an unnecessary remainder in the
621 * calculation below, so we don't try to warn about that.
623 tmp = (u64)ftdms * n;
624 do_div(tmp, 128 * sample_rate);
627 dev_dbg(hdmi->dev, "%s: fs=%uHz ftdms=%lu.%03luMHz N=%d cts=%d\n",
628 __func__, sample_rate, ftdms / 1000000, (ftdms / 1000) % 1000,
631 spin_lock_irq(&hdmi->audio_lock);
633 hdmi->audio_cts = cts;
634 hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0);
635 spin_unlock_irq(&hdmi->audio_lock);
638 static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi)
640 mutex_lock(&hdmi->audio_mutex);
641 hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate);
642 mutex_unlock(&hdmi->audio_mutex);
645 static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi)
647 mutex_lock(&hdmi->audio_mutex);
648 hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock,
650 mutex_unlock(&hdmi->audio_mutex);
653 void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate)
655 mutex_lock(&hdmi->audio_mutex);
656 hdmi->sample_rate = rate;
657 hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock,
659 mutex_unlock(&hdmi->audio_mutex);
661 EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate);
663 void dw_hdmi_audio_enable(struct dw_hdmi *hdmi)
667 spin_lock_irqsave(&hdmi->audio_lock, flags);
668 hdmi->audio_enable = true;
669 hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
670 spin_unlock_irqrestore(&hdmi->audio_lock, flags);
672 EXPORT_SYMBOL_GPL(dw_hdmi_audio_enable);
674 void dw_hdmi_audio_disable(struct dw_hdmi *hdmi)
678 spin_lock_irqsave(&hdmi->audio_lock, flags);
679 hdmi->audio_enable = false;
680 hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0);
681 spin_unlock_irqrestore(&hdmi->audio_lock, flags);
683 EXPORT_SYMBOL_GPL(dw_hdmi_audio_disable);
686 * this submodule is responsible for the video data synchronization.
687 * for example, for RGB 4:4:4 input, the data map is defined as
688 * pin{47~40} <==> R[7:0]
689 * pin{31~24} <==> G[7:0]
690 * pin{15~8} <==> B[7:0]
692 static void hdmi_video_sample(struct dw_hdmi *hdmi)
694 int color_format = 0;
697 if (hdmi->hdmi_data.enc_in_format == RGB) {
698 if (hdmi->hdmi_data.enc_color_depth == 8)
700 else if (hdmi->hdmi_data.enc_color_depth == 10)
702 else if (hdmi->hdmi_data.enc_color_depth == 12)
704 else if (hdmi->hdmi_data.enc_color_depth == 16)
708 } else if (hdmi->hdmi_data.enc_in_format == YCBCR444) {
709 if (hdmi->hdmi_data.enc_color_depth == 8)
711 else if (hdmi->hdmi_data.enc_color_depth == 10)
713 else if (hdmi->hdmi_data.enc_color_depth == 12)
715 else if (hdmi->hdmi_data.enc_color_depth == 16)
719 } else if (hdmi->hdmi_data.enc_in_format == YCBCR422_8BITS) {
720 if (hdmi->hdmi_data.enc_color_depth == 8)
722 else if (hdmi->hdmi_data.enc_color_depth == 10)
724 else if (hdmi->hdmi_data.enc_color_depth == 12)
730 val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
731 ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
732 HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
733 hdmi_writeb(hdmi, val, HDMI_TX_INVID0);
735 /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */
736 val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE |
737 HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE |
738 HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE;
739 hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING);
740 hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0);
741 hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1);
742 hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0);
743 hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1);
744 hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0);
745 hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1);
748 static int is_color_space_conversion(struct dw_hdmi *hdmi)
750 return hdmi->hdmi_data.enc_in_format != hdmi->hdmi_data.enc_out_format;
753 static int is_color_space_decimation(struct dw_hdmi *hdmi)
755 if (hdmi->hdmi_data.enc_out_format != YCBCR422_8BITS)
757 if (hdmi->hdmi_data.enc_in_format == RGB ||
758 hdmi->hdmi_data.enc_in_format == YCBCR444)
763 static int is_color_space_interpolation(struct dw_hdmi *hdmi)
765 if (hdmi->hdmi_data.enc_in_format != YCBCR422_8BITS)
767 if (hdmi->hdmi_data.enc_out_format == RGB ||
768 hdmi->hdmi_data.enc_out_format == YCBCR444)
773 static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi)
775 const u16 (*csc_coeff)[3][4] = &csc_coeff_default;
779 if (is_color_space_conversion(hdmi)) {
780 if (hdmi->hdmi_data.enc_out_format == RGB) {
781 if (hdmi->hdmi_data.colorimetry ==
782 HDMI_COLORIMETRY_ITU_601)
783 csc_coeff = &csc_coeff_rgb_out_eitu601;
785 csc_coeff = &csc_coeff_rgb_out_eitu709;
786 } else if (hdmi->hdmi_data.enc_in_format == RGB) {
787 if (hdmi->hdmi_data.colorimetry ==
788 HDMI_COLORIMETRY_ITU_601)
789 csc_coeff = &csc_coeff_rgb_in_eitu601;
791 csc_coeff = &csc_coeff_rgb_in_eitu709;
796 /* The CSC registers are sequential, alternating MSB then LSB */
797 for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) {
798 u16 coeff_a = (*csc_coeff)[0][i];
799 u16 coeff_b = (*csc_coeff)[1][i];
800 u16 coeff_c = (*csc_coeff)[2][i];
802 hdmi_writeb(hdmi, coeff_a & 0xff, HDMI_CSC_COEF_A1_LSB + i * 2);
803 hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2);
804 hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2);
805 hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2);
806 hdmi_writeb(hdmi, coeff_c & 0xff, HDMI_CSC_COEF_C1_LSB + i * 2);
807 hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2);
810 hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK,
814 static void hdmi_video_csc(struct dw_hdmi *hdmi)
817 int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE;
820 /* YCC422 interpolation to 444 mode */
821 if (is_color_space_interpolation(hdmi))
822 interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1;
823 else if (is_color_space_decimation(hdmi))
824 decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3;
826 if (hdmi->hdmi_data.enc_color_depth == 8)
827 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP;
828 else if (hdmi->hdmi_data.enc_color_depth == 10)
829 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP;
830 else if (hdmi->hdmi_data.enc_color_depth == 12)
831 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP;
832 else if (hdmi->hdmi_data.enc_color_depth == 16)
833 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP;
837 /* Configure the CSC registers */
838 hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG);
839 hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK,
842 dw_hdmi_update_csc_coeffs(hdmi);
846 * HDMI video packetizer is used to packetize the data.
847 * for example, if input is YCC422 mode or repeater is used,
848 * data should be repacked this module can be bypassed.
850 static void hdmi_video_packetize(struct dw_hdmi *hdmi)
852 unsigned int color_depth = 0;
853 unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit;
854 unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP;
855 struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
858 if (hdmi_data->enc_out_format == RGB ||
859 hdmi_data->enc_out_format == YCBCR444) {
860 if (!hdmi_data->enc_color_depth) {
861 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
862 } else if (hdmi_data->enc_color_depth == 8) {
864 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
865 } else if (hdmi_data->enc_color_depth == 10) {
867 } else if (hdmi_data->enc_color_depth == 12) {
869 } else if (hdmi_data->enc_color_depth == 16) {
874 } else if (hdmi_data->enc_out_format == YCBCR422_8BITS) {
875 if (!hdmi_data->enc_color_depth ||
876 hdmi_data->enc_color_depth == 8)
877 remap_size = HDMI_VP_REMAP_YCC422_16bit;
878 else if (hdmi_data->enc_color_depth == 10)
879 remap_size = HDMI_VP_REMAP_YCC422_20bit;
880 else if (hdmi_data->enc_color_depth == 12)
881 remap_size = HDMI_VP_REMAP_YCC422_24bit;
884 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422;
889 /* set the packetizer registers */
890 val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
891 HDMI_VP_PR_CD_COLOR_DEPTH_MASK) |
892 ((hdmi_data->pix_repet_factor <<
893 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) &
894 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK);
895 hdmi_writeb(hdmi, val, HDMI_VP_PR_CD);
897 hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE,
898 HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF);
900 /* Data from pixel repeater block */
901 if (hdmi_data->pix_repet_factor > 1) {
902 vp_conf = HDMI_VP_CONF_PR_EN_ENABLE |
903 HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER;
904 } else { /* data from packetizer block */
905 vp_conf = HDMI_VP_CONF_PR_EN_DISABLE |
906 HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
909 hdmi_modb(hdmi, vp_conf,
910 HDMI_VP_CONF_PR_EN_MASK |
911 HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF);
913 hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET,
914 HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF);
916 hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP);
918 if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) {
919 vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
920 HDMI_VP_CONF_PP_EN_ENABLE |
921 HDMI_VP_CONF_YCC422_EN_DISABLE;
922 } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) {
923 vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
924 HDMI_VP_CONF_PP_EN_DISABLE |
925 HDMI_VP_CONF_YCC422_EN_ENABLE;
926 } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) {
927 vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE |
928 HDMI_VP_CONF_PP_EN_DISABLE |
929 HDMI_VP_CONF_YCC422_EN_DISABLE;
934 hdmi_modb(hdmi, vp_conf,
935 HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK |
936 HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF);
938 hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
939 HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE,
940 HDMI_VP_STUFF_PP_STUFFING_MASK |
941 HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF);
943 hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK,
947 static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi,
950 hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET,
951 HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0);
954 static inline void hdmi_phy_test_enable(struct dw_hdmi *hdmi,
957 hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTEN_OFFSET,
958 HDMI_PHY_TST0_TSTEN_MASK, HDMI_PHY_TST0);
961 static inline void hdmi_phy_test_clock(struct dw_hdmi *hdmi,
964 hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLK_OFFSET,
965 HDMI_PHY_TST0_TSTCLK_MASK, HDMI_PHY_TST0);
968 static inline void hdmi_phy_test_din(struct dw_hdmi *hdmi,
971 hdmi_writeb(hdmi, bit, HDMI_PHY_TST1);
974 static inline void hdmi_phy_test_dout(struct dw_hdmi *hdmi,
977 hdmi_writeb(hdmi, bit, HDMI_PHY_TST2);
980 static bool hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, int msec)
984 while ((val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) {
989 hdmi_writeb(hdmi, val, HDMI_IH_I2CMPHY_STAT0);
994 static void __hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
997 hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0);
998 hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR);
999 hdmi_writeb(hdmi, (unsigned char)(data >> 8),
1000 HDMI_PHY_I2CM_DATAO_1_ADDR);
1001 hdmi_writeb(hdmi, (unsigned char)(data >> 0),
1002 HDMI_PHY_I2CM_DATAO_0_ADDR);
1003 hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE,
1004 HDMI_PHY_I2CM_OPERATION_ADDR);
1005 hdmi_phy_wait_i2c_done(hdmi, 1000);
1008 static int hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
1011 __hdmi_phy_i2c_write(hdmi, data, addr);
1015 static void dw_hdmi_phy_enable_powerdown(struct dw_hdmi *hdmi, bool enable)
1017 hdmi_mask_writeb(hdmi, !enable, HDMI_PHY_CONF0,
1018 HDMI_PHY_CONF0_PDZ_OFFSET,
1019 HDMI_PHY_CONF0_PDZ_MASK);
1022 static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable)
1024 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1025 HDMI_PHY_CONF0_ENTMDS_OFFSET,
1026 HDMI_PHY_CONF0_ENTMDS_MASK);
1029 static void dw_hdmi_phy_enable_spare(struct dw_hdmi *hdmi, u8 enable)
1031 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1032 HDMI_PHY_CONF0_SPARECTRL_OFFSET,
1033 HDMI_PHY_CONF0_SPARECTRL_MASK);
1036 static void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable)
1038 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1039 HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET,
1040 HDMI_PHY_CONF0_GEN2_PDDQ_MASK);
1043 static void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable)
1045 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1046 HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET,
1047 HDMI_PHY_CONF0_GEN2_TXPWRON_MASK);
1050 static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, u8 enable)
1052 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1053 HDMI_PHY_CONF0_SELDATAENPOL_OFFSET,
1054 HDMI_PHY_CONF0_SELDATAENPOL_MASK);
1057 static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable)
1059 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1060 HDMI_PHY_CONF0_SELDIPIF_OFFSET,
1061 HDMI_PHY_CONF0_SELDIPIF_MASK);
1064 static int hdmi_phy_configure(struct dw_hdmi *hdmi, unsigned char prep,
1065 unsigned char res, int cscon)
1069 const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
1070 const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg;
1071 const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr;
1072 const struct dw_hdmi_phy_config *phy_config = pdata->phy_config;
1078 case 0: /* color resolution 0 is 8 bit colour depth */
1080 res_idx = DW_HDMI_RES_8;
1083 res_idx = DW_HDMI_RES_10;
1086 res_idx = DW_HDMI_RES_12;
1092 /* PLL/MPLL Cfg - always match on final entry */
1093 for (; mpll_config->mpixelclock != ~0UL; mpll_config++)
1094 if (hdmi->hdmi_data.video_mode.mpixelclock <=
1095 mpll_config->mpixelclock)
1098 for (; curr_ctrl->mpixelclock != ~0UL; curr_ctrl++)
1099 if (hdmi->hdmi_data.video_mode.mpixelclock <=
1100 curr_ctrl->mpixelclock)
1103 for (; phy_config->mpixelclock != ~0UL; phy_config++)
1104 if (hdmi->hdmi_data.video_mode.mpixelclock <=
1105 phy_config->mpixelclock)
1108 if (mpll_config->mpixelclock == ~0UL ||
1109 curr_ctrl->mpixelclock == ~0UL ||
1110 phy_config->mpixelclock == ~0UL) {
1111 dev_err(hdmi->dev, "Pixel clock %d - unsupported by HDMI\n",
1112 hdmi->hdmi_data.video_mode.mpixelclock);
1116 /* Enable csc path */
1118 val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH;
1120 val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS;
1122 hdmi_writeb(hdmi, val, HDMI_MC_FLOWCTRL);
1124 /* gen2 tx power off */
1125 dw_hdmi_phy_gen2_txpwron(hdmi, 0);
1128 dw_hdmi_phy_gen2_pddq(hdmi, 1);
1131 hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_DEASSERT, HDMI_MC_PHYRSTZ);
1132 hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_ASSERT, HDMI_MC_PHYRSTZ);
1134 hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST);
1136 hdmi_phy_test_clear(hdmi, 1);
1137 hdmi_writeb(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2,
1138 HDMI_PHY_I2CM_SLAVE_ADDR);
1139 hdmi_phy_test_clear(hdmi, 0);
1141 hdmi_phy_i2c_write(hdmi, mpll_config->res[res_idx].cpce, 0x06);
1142 hdmi_phy_i2c_write(hdmi, mpll_config->res[res_idx].gmp, 0x15);
1145 hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[res_idx], 0x10);
1147 hdmi_phy_i2c_write(hdmi, 0x0000, 0x13); /* PLLPHBYCTRL */
1148 hdmi_phy_i2c_write(hdmi, 0x0006, 0x17);
1150 hdmi_phy_i2c_write(hdmi, phy_config->term, 0x19); /* TXTERM */
1151 hdmi_phy_i2c_write(hdmi, phy_config->sym_ctr, 0x09); /* CKSYMTXCTRL */
1152 hdmi_phy_i2c_write(hdmi, phy_config->vlev_ctr, 0x0E); /* VLEVCTRL */
1154 /* REMOVE CLK TERM */
1155 hdmi_phy_i2c_write(hdmi, 0x8000, 0x05); /* CKCALCTRL */
1157 dw_hdmi_phy_enable_powerdown(hdmi, false);
1159 /* toggle TMDS enable */
1160 dw_hdmi_phy_enable_tmds(hdmi, 0);
1161 dw_hdmi_phy_enable_tmds(hdmi, 1);
1163 /* gen2 tx power on */
1164 dw_hdmi_phy_gen2_txpwron(hdmi, 1);
1165 dw_hdmi_phy_gen2_pddq(hdmi, 0);
1167 if (is_rockchip(hdmi->dev_type))
1168 dw_hdmi_phy_enable_spare(hdmi, 1);
1170 /*Wait for PHY PLL lock */
1173 val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK;
1178 dev_err(hdmi->dev, "PHY PLL not locked\n");
1189 static int dw_hdmi_phy_init(struct dw_hdmi *hdmi)
1194 /*check csc whether needed activated in HDMI mode */
1195 cscon = hdmi->sink_is_hdmi && is_color_space_conversion(hdmi);
1197 /* HDMI Phy spec says to do the phy initialization sequence twice */
1198 for (i = 0; i < 2; i++) {
1199 dw_hdmi_phy_sel_data_en_pol(hdmi, 1);
1200 dw_hdmi_phy_sel_interface_control(hdmi, 0);
1201 dw_hdmi_phy_enable_tmds(hdmi, 0);
1202 dw_hdmi_phy_enable_powerdown(hdmi, true);
1205 ret = hdmi_phy_configure(hdmi, 0, 8, cscon);
1210 hdmi->phy_enabled = true;
1214 static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi)
1218 if (hdmi->hdmi_data.video_mode.mdataenablepolarity)
1219 de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH;
1221 de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW;
1223 /* disable rx detect */
1224 hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE,
1225 HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0);
1227 hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG);
1229 hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE,
1230 HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1);
1233 static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
1235 struct hdmi_avi_infoframe frame;
1238 /* Initialise info frame from DRM mode */
1239 drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
1241 if (hdmi->hdmi_data.enc_out_format == YCBCR444)
1242 frame.colorspace = HDMI_COLORSPACE_YUV444;
1243 else if (hdmi->hdmi_data.enc_out_format == YCBCR422_8BITS)
1244 frame.colorspace = HDMI_COLORSPACE_YUV422;
1246 frame.colorspace = HDMI_COLORSPACE_RGB;
1248 /* Set up colorimetry */
1249 if (hdmi->hdmi_data.enc_out_format == XVYCC444) {
1250 frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
1251 if (hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_601)
1252 frame.extended_colorimetry =
1253 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1254 else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/
1255 frame.extended_colorimetry =
1256 HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
1257 } else if (hdmi->hdmi_data.enc_out_format != RGB) {
1258 frame.colorimetry = hdmi->hdmi_data.colorimetry;
1259 frame.extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1260 } else { /* Carries no data */
1261 frame.colorimetry = HDMI_COLORIMETRY_NONE;
1262 frame.extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1265 frame.scan_mode = HDMI_SCAN_MODE_NONE;
1268 * The Designware IP uses a different byte format from standard
1269 * AVI info frames, though generally the bits are in the correct
1274 * AVI data byte 1 differences: Colorspace in bits 4,5 rather than 5,6,
1275 * active aspect present in bit 6 rather than 4.
1277 val = (frame.colorspace & 3) << 4 | (frame.scan_mode & 0x3);
1278 if (frame.active_aspect & 15)
1279 val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT;
1280 if (frame.top_bar || frame.bottom_bar)
1281 val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR;
1282 if (frame.left_bar || frame.right_bar)
1283 val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR;
1284 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0);
1286 /* AVI data byte 2 differences: none */
1287 val = ((frame.colorimetry & 0x3) << 6) |
1288 ((frame.picture_aspect & 0x3) << 4) |
1289 (frame.active_aspect & 0xf);
1290 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1);
1292 /* AVI data byte 3 differences: none */
1293 val = ((frame.extended_colorimetry & 0x7) << 4) |
1294 ((frame.quantization_range & 0x3) << 2) |
1297 val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID;
1298 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2);
1300 /* AVI data byte 4 differences: none */
1301 val = frame.video_code & 0x7f;
1302 hdmi_writeb(hdmi, val, HDMI_FC_AVIVID);
1304 /* AVI Data Byte 5- set up input and output pixel repetition */
1305 val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) <<
1306 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) &
1307 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) |
1308 ((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput <<
1309 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) &
1310 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK);
1311 hdmi_writeb(hdmi, val, HDMI_FC_PRCONF);
1314 * AVI data byte 5 differences: content type in 0,1 rather than 4,5,
1315 * ycc range in bits 2,3 rather than 6,7
1317 val = ((frame.ycc_quantization_range & 0x3) << 2) |
1318 (frame.content_type & 0x3);
1319 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3);
1321 /* AVI Data Bytes 6-13 */
1322 hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0);
1323 hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1);
1324 hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0);
1325 hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1);
1326 hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0);
1327 hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1);
1328 hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0);
1329 hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1);
1332 static void hdmi_av_composer(struct dw_hdmi *hdmi,
1333 const struct drm_display_mode *mode)
1336 struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode;
1337 int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len;
1338 unsigned int vdisplay;
1340 vmode->mpixelclock = mode->clock * 1000;
1342 dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock);
1344 /* Set up HDMI_FC_INVIDCONF */
1345 inv_val = (hdmi->hdmi_data.hdcp_enable ?
1346 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE :
1347 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE);
1349 inv_val |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
1350 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH :
1351 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW;
1353 inv_val |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
1354 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH :
1355 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW;
1357 inv_val |= (vmode->mdataenablepolarity ?
1358 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
1359 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);
1361 if (hdmi->vic == 39)
1362 inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH;
1364 inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
1365 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH :
1366 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;
1368 inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
1369 HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
1370 HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
1372 inv_val |= hdmi->sink_is_hdmi ?
1373 HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
1374 HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE;
1376 hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF);
1378 vdisplay = mode->vdisplay;
1379 vblank = mode->vtotal - mode->vdisplay;
1380 v_de_vs = mode->vsync_start - mode->vdisplay;
1381 vsync_len = mode->vsync_end - mode->vsync_start;
1384 * When we're setting an interlaced mode, we need
1385 * to adjust the vertical timing to suit.
1387 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
1394 /* Set up horizontal active pixel width */
1395 hdmi_writeb(hdmi, mode->hdisplay >> 8, HDMI_FC_INHACTV1);
1396 hdmi_writeb(hdmi, mode->hdisplay, HDMI_FC_INHACTV0);
1398 /* Set up vertical active lines */
1399 hdmi_writeb(hdmi, vdisplay >> 8, HDMI_FC_INVACTV1);
1400 hdmi_writeb(hdmi, vdisplay, HDMI_FC_INVACTV0);
1402 /* Set up horizontal blanking pixel region width */
1403 hblank = mode->htotal - mode->hdisplay;
1404 hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1);
1405 hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0);
1407 /* Set up vertical blanking pixel region width */
1408 hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK);
1410 /* Set up HSYNC active edge delay width (in pixel clks) */
1411 h_de_hs = mode->hsync_start - mode->hdisplay;
1412 hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1);
1413 hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0);
1415 /* Set up VSYNC active edge delay (in lines) */
1416 hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY);
1418 /* Set up HSYNC active pulse width (in pixel clks) */
1419 hsync_len = mode->hsync_end - mode->hsync_start;
1420 hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1);
1421 hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0);
1423 /* Set up VSYNC active edge delay (in lines) */
1424 hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH);
1427 static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi)
1429 if (!hdmi->phy_enabled)
1432 dw_hdmi_phy_enable_tmds(hdmi, 0);
1433 dw_hdmi_phy_enable_powerdown(hdmi, true);
1435 hdmi->phy_enabled = false;
1438 /* HDMI Initialization Step B.4 */
1439 static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi)
1443 /* control period minimum duration */
1444 hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR);
1445 hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR);
1446 hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC);
1448 /* Set to fill TMDS data channels */
1449 hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM);
1450 hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM);
1451 hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM);
1453 /* Enable pixel clock and tmds data path */
1455 clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
1456 hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS);
1458 clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
1459 hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS);
1461 /* Enable csc path */
1462 if (is_color_space_conversion(hdmi)) {
1463 clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE;
1464 hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS);
1468 static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi)
1470 hdmi_modb(hdmi, 0, HDMI_MC_CLKDIS_AUDCLK_DISABLE, HDMI_MC_CLKDIS);
1473 /* Workaround to clear the overflow condition */
1474 static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
1479 /* TMDS software reset */
1480 hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ);
1482 val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF);
1483 if (hdmi->dev_type == IMX6DL_HDMI) {
1484 hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF);
1488 for (count = 0; count < 4; count++)
1489 hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF);
1492 static void hdmi_enable_overflow_interrupts(struct dw_hdmi *hdmi)
1494 hdmi_writeb(hdmi, 0, HDMI_FC_MASK2);
1495 hdmi_writeb(hdmi, 0, HDMI_IH_MUTE_FC_STAT2);
1498 static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi)
1500 hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK,
1501 HDMI_IH_MUTE_FC_STAT2);
1504 static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
1508 hdmi_disable_overflow_interrupts(hdmi);
1510 hdmi->vic = drm_match_cea_mode(mode);
1513 dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n");
1515 dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic);
1518 if ((hdmi->vic == 6) || (hdmi->vic == 7) ||
1519 (hdmi->vic == 21) || (hdmi->vic == 22) ||
1520 (hdmi->vic == 2) || (hdmi->vic == 3) ||
1521 (hdmi->vic == 17) || (hdmi->vic == 18))
1522 hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601;
1524 hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709;
1526 hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0;
1527 hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0;
1529 /* TODO: Get input format from IPU (via FB driver interface) */
1530 hdmi->hdmi_data.enc_in_format = RGB;
1532 hdmi->hdmi_data.enc_out_format = RGB;
1534 hdmi->hdmi_data.enc_color_depth = 8;
1535 hdmi->hdmi_data.pix_repet_factor = 0;
1536 hdmi->hdmi_data.hdcp_enable = 0;
1537 hdmi->hdmi_data.video_mode.mdataenablepolarity = true;
1539 /* HDMI Initialization Step B.1 */
1540 hdmi_av_composer(hdmi, mode);
1542 /* HDMI Initializateion Step B.2 */
1543 ret = dw_hdmi_phy_init(hdmi);
1547 /* HDMI Initialization Step B.3 */
1548 dw_hdmi_enable_video_path(hdmi);
1550 if (hdmi->sink_has_audio) {
1551 dev_dbg(hdmi->dev, "sink has audio support\n");
1553 /* HDMI Initialization Step E - Configure audio */
1554 hdmi_clk_regenerator_update_pixel_clock(hdmi);
1555 hdmi_enable_audio_clk(hdmi);
1558 /* not for DVI mode */
1559 if (hdmi->sink_is_hdmi) {
1560 dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__);
1562 /* HDMI Initialization Step F - Configure AVI InfoFrame */
1563 hdmi_config_AVI(hdmi, mode);
1565 dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
1568 hdmi_video_packetize(hdmi);
1569 hdmi_video_csc(hdmi);
1570 hdmi_video_sample(hdmi);
1571 hdmi_tx_hdcp_config(hdmi);
1573 dw_hdmi_clear_overflow(hdmi);
1574 if (hdmi->cable_plugin && hdmi->sink_is_hdmi)
1575 hdmi_enable_overflow_interrupts(hdmi);
1580 static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi)
1585 * Boot up defaults are:
1586 * HDMI_IH_MUTE = 0x03 (disabled)
1587 * HDMI_IH_MUTE_* = 0x00 (enabled)
1589 * Disable top level interrupt bits in HDMI block
1591 ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) |
1592 HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
1593 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;
1595 hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
1597 /* by default mask all interrupts */
1598 hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK);
1599 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0);
1600 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1);
1601 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2);
1602 hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0);
1603 hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR);
1604 hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR);
1605 hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT);
1606 hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT);
1607 hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK);
1608 hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK);
1609 hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK);
1610 hdmi_writeb(hdmi, 0xff, HDMI_CEC_MASK);
1611 hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT);
1612 hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT);
1614 /* Disable interrupts in the IH_MUTE_* registers */
1615 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0);
1616 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1);
1617 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2);
1618 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0);
1619 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0);
1620 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0);
1621 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0);
1622 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0);
1623 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0);
1624 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0);
1626 /* Enable top level interrupt bits in HDMI block */
1627 ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
1628 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT);
1629 hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
1632 static void dw_hdmi_poweron(struct dw_hdmi *hdmi)
1634 hdmi->bridge_is_on = true;
1635 dw_hdmi_setup(hdmi, &hdmi->previous_mode);
1638 static void dw_hdmi_poweroff(struct dw_hdmi *hdmi)
1640 dw_hdmi_phy_disable(hdmi);
1641 hdmi->bridge_is_on = false;
1644 static void dw_hdmi_update_power(struct dw_hdmi *hdmi)
1646 int force = hdmi->force;
1648 if (hdmi->disabled) {
1649 force = DRM_FORCE_OFF;
1650 } else if (force == DRM_FORCE_UNSPECIFIED) {
1652 force = DRM_FORCE_ON;
1654 force = DRM_FORCE_OFF;
1657 if (force == DRM_FORCE_OFF) {
1658 if (hdmi->bridge_is_on)
1659 dw_hdmi_poweroff(hdmi);
1661 if (!hdmi->bridge_is_on)
1662 dw_hdmi_poweron(hdmi);
1667 * Adjust the detection of RXSENSE according to whether we have a forced
1668 * connection mode enabled, or whether we have been disabled. There is
1669 * no point processing RXSENSE interrupts if we have a forced connection
1670 * state, or DRM has us disabled.
1672 * We also disable rxsense interrupts when we think we're disconnected
1673 * to avoid floating TDMS signals giving false rxsense interrupts.
1675 * Note: we still need to listen for HPD interrupts even when DRM has us
1676 * disabled so that we can detect a connect event.
1678 static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi)
1680 u8 old_mask = hdmi->phy_mask;
1682 if (hdmi->force || hdmi->disabled || !hdmi->rxsense)
1683 hdmi->phy_mask |= HDMI_PHY_RX_SENSE;
1685 hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE;
1687 if (old_mask != hdmi->phy_mask)
1688 hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
1691 static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
1692 struct drm_display_mode *orig_mode,
1693 struct drm_display_mode *mode)
1695 struct dw_hdmi *hdmi = bridge->driver_private;
1697 mutex_lock(&hdmi->mutex);
1699 /* Store the display mode for plugin/DKMS poweron events */
1700 memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode));
1702 mutex_unlock(&hdmi->mutex);
1705 static void dw_hdmi_bridge_disable(struct drm_bridge *bridge)
1707 struct dw_hdmi *hdmi = bridge->driver_private;
1709 mutex_lock(&hdmi->mutex);
1710 hdmi->disabled = true;
1711 dw_hdmi_update_power(hdmi);
1712 dw_hdmi_update_phy_mask(hdmi);
1713 mutex_unlock(&hdmi->mutex);
1716 static void dw_hdmi_bridge_enable(struct drm_bridge *bridge)
1718 struct dw_hdmi *hdmi = bridge->driver_private;
1720 mutex_lock(&hdmi->mutex);
1721 hdmi->disabled = false;
1722 dw_hdmi_update_power(hdmi);
1723 dw_hdmi_update_phy_mask(hdmi);
1724 mutex_unlock(&hdmi->mutex);
1727 static void dw_hdmi_bridge_nop(struct drm_bridge *bridge)
1732 static enum drm_connector_status
1733 dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
1735 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1738 mutex_lock(&hdmi->mutex);
1739 hdmi->force = DRM_FORCE_UNSPECIFIED;
1740 dw_hdmi_update_power(hdmi);
1741 dw_hdmi_update_phy_mask(hdmi);
1742 mutex_unlock(&hdmi->mutex);
1744 return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ?
1745 connector_status_connected : connector_status_disconnected;
1748 static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
1750 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1758 edid = drm_get_edid(connector, hdmi->ddc);
1760 dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
1761 edid->width_cm, edid->height_cm);
1763 hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
1764 hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
1765 drm_mode_connector_update_edid_property(connector, edid);
1766 ret = drm_add_edid_modes(connector, edid);
1768 drm_edid_to_eld(connector, edid);
1771 dev_dbg(hdmi->dev, "failed to get edid\n");
1777 static enum drm_mode_status
1778 dw_hdmi_connector_mode_valid(struct drm_connector *connector,
1779 struct drm_display_mode *mode)
1781 struct dw_hdmi *hdmi = container_of(connector,
1782 struct dw_hdmi, connector);
1783 enum drm_mode_status mode_status = MODE_OK;
1785 /* We don't support double-clocked modes */
1786 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1789 if (hdmi->plat_data->mode_valid)
1790 mode_status = hdmi->plat_data->mode_valid(connector, mode);
1795 static struct drm_encoder *dw_hdmi_connector_best_encoder(struct drm_connector
1798 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1801 return hdmi->encoder;
1804 static void dw_hdmi_connector_destroy(struct drm_connector *connector)
1806 drm_connector_unregister(connector);
1807 drm_connector_cleanup(connector);
1810 static void dw_hdmi_connector_force(struct drm_connector *connector)
1812 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1815 mutex_lock(&hdmi->mutex);
1816 hdmi->force = connector->force;
1817 dw_hdmi_update_power(hdmi);
1818 dw_hdmi_update_phy_mask(hdmi);
1819 mutex_unlock(&hdmi->mutex);
1822 static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
1823 .dpms = drm_helper_connector_dpms,
1824 .fill_modes = drm_helper_probe_single_connector_modes,
1825 .detect = dw_hdmi_connector_detect,
1826 .destroy = dw_hdmi_connector_destroy,
1827 .force = dw_hdmi_connector_force,
1830 static const struct drm_connector_funcs dw_hdmi_atomic_connector_funcs = {
1831 .dpms = drm_atomic_helper_connector_dpms,
1832 .fill_modes = drm_helper_probe_single_connector_modes,
1833 .detect = dw_hdmi_connector_detect,
1834 .destroy = dw_hdmi_connector_destroy,
1835 .force = dw_hdmi_connector_force,
1836 .reset = drm_atomic_helper_connector_reset,
1837 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1838 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1841 static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
1842 .get_modes = dw_hdmi_connector_get_modes,
1843 .mode_valid = dw_hdmi_connector_mode_valid,
1844 .best_encoder = dw_hdmi_connector_best_encoder,
1847 static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
1848 .enable = dw_hdmi_bridge_enable,
1849 .disable = dw_hdmi_bridge_disable,
1850 .pre_enable = dw_hdmi_bridge_nop,
1851 .post_disable = dw_hdmi_bridge_nop,
1852 .mode_set = dw_hdmi_bridge_mode_set,
1855 static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi)
1857 struct dw_hdmi_i2c *i2c = hdmi->i2c;
1860 stat = hdmi_readb(hdmi, HDMI_IH_I2CM_STAT0);
1864 hdmi_writeb(hdmi, stat, HDMI_IH_I2CM_STAT0);
1868 complete(&i2c->cmp);
1873 static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
1875 struct dw_hdmi *hdmi = dev_id;
1877 irqreturn_t ret = IRQ_NONE;
1880 ret = dw_hdmi_i2c_irq(hdmi);
1882 intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
1884 hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
1885 return IRQ_WAKE_THREAD;
1891 static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
1893 struct dw_hdmi *hdmi = dev_id;
1894 u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat;
1896 intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
1897 phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0);
1898 phy_stat = hdmi_readb(hdmi, HDMI_PHY_STAT0);
1901 if (intr_stat & HDMI_IH_PHY_STAT0_HPD)
1902 phy_pol_mask |= HDMI_PHY_HPD;
1903 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE0)
1904 phy_pol_mask |= HDMI_PHY_RX_SENSE0;
1905 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE1)
1906 phy_pol_mask |= HDMI_PHY_RX_SENSE1;
1907 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE2)
1908 phy_pol_mask |= HDMI_PHY_RX_SENSE2;
1909 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE3)
1910 phy_pol_mask |= HDMI_PHY_RX_SENSE3;
1913 hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0);
1916 * RX sense tells us whether the TDMS transmitters are detecting
1917 * load - in other words, there's something listening on the
1918 * other end of the link. Use this to decide whether we should
1919 * power on the phy as HPD may be toggled by the sink to merely
1920 * ask the source to re-read the EDID.
1923 (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
1924 mutex_lock(&hdmi->mutex);
1925 if (!hdmi->bridge_is_on && !hdmi->force) {
1927 * If the RX sense status indicates we're disconnected,
1928 * clear the software rxsense status.
1930 if (!(phy_stat & HDMI_PHY_RX_SENSE))
1931 hdmi->rxsense = false;
1934 * Only set the software rxsense status when both
1935 * rxsense and hpd indicates we're connected.
1936 * This avoids what seems to be bad behaviour in
1937 * at least iMX6S versions of the phy.
1939 if (phy_stat & HDMI_PHY_HPD)
1940 hdmi->rxsense = true;
1942 dw_hdmi_update_power(hdmi);
1943 dw_hdmi_update_phy_mask(hdmi);
1945 mutex_unlock(&hdmi->mutex);
1948 if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
1949 dev_dbg(hdmi->dev, "EVENT=%s\n",
1950 phy_int_pol & HDMI_PHY_HPD ? "plugin" : "plugout");
1951 drm_helper_hpd_irq_event(hdmi->bridge->dev);
1952 #ifdef CONFIG_SWITCH
1953 if (phy_int_pol & HDMI_PHY_HPD)
1954 switch_set_state(&hdmi->switchdev, 1);
1956 switch_set_state(&hdmi->switchdev, 0);
1960 hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0);
1961 hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
1962 HDMI_IH_MUTE_PHY_STAT0);
1967 static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi)
1969 struct drm_encoder *encoder = hdmi->encoder;
1970 struct drm_bridge *bridge;
1973 bridge = devm_kzalloc(drm->dev, sizeof(*bridge), GFP_KERNEL);
1975 DRM_ERROR("Failed to allocate drm bridge\n");
1979 hdmi->bridge = bridge;
1980 bridge->driver_private = hdmi;
1981 bridge->funcs = &dw_hdmi_bridge_funcs;
1982 ret = drm_bridge_attach(drm, bridge);
1984 DRM_ERROR("Failed to initialize bridge with drm\n");
1988 encoder->bridge = bridge;
1989 hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
1990 hdmi->connector.port = hdmi->dev->of_node;
1992 drm_connector_helper_add(&hdmi->connector,
1993 &dw_hdmi_connector_helper_funcs);
1995 if (drm_core_check_feature(drm, DRIVER_ATOMIC))
1996 drm_connector_init(drm, &hdmi->connector,
1997 &dw_hdmi_atomic_connector_funcs,
1998 DRM_MODE_CONNECTOR_HDMIA);
2000 drm_connector_init(drm, &hdmi->connector,
2001 &dw_hdmi_connector_funcs,
2002 DRM_MODE_CONNECTOR_HDMIA);
2004 drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
2009 int dw_hdmi_bind(struct device *dev, struct device *master,
2010 void *data, struct drm_encoder *encoder,
2011 struct resource *iores, int irq,
2012 const struct dw_hdmi_plat_data *plat_data)
2014 struct drm_device *drm = data;
2015 struct device_node *np = dev->of_node;
2016 struct platform_device_info pdevinfo;
2017 struct device_node *ddc_node;
2018 struct dw_hdmi *hdmi;
2024 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
2028 hdmi->connector.interlace_allowed = 1;
2030 hdmi->plat_data = plat_data;
2032 hdmi->dev_type = plat_data->dev_type;
2033 hdmi->sample_rate = 48000;
2034 hdmi->encoder = encoder;
2035 hdmi->disabled = true;
2036 hdmi->rxsense = true;
2037 hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE);
2039 mutex_init(&hdmi->mutex);
2040 mutex_init(&hdmi->audio_mutex);
2041 spin_lock_init(&hdmi->audio_lock);
2043 of_property_read_u32(np, "reg-io-width", &val);
2047 hdmi->write = dw_hdmi_writel;
2048 hdmi->read = dw_hdmi_readl;
2051 hdmi->write = dw_hdmi_writeb;
2052 hdmi->read = dw_hdmi_readb;
2055 dev_err(dev, "reg-io-width must be 1 or 4\n");
2059 ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
2061 hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
2062 of_node_put(ddc_node);
2064 dev_dbg(hdmi->dev, "failed to read ddc node\n");
2065 return -EPROBE_DEFER;
2069 dev_dbg(hdmi->dev, "no ddc property found\n");
2072 /* If DDC bus is not specified, try to register HDMI I2C bus */
2074 hdmi->ddc = dw_hdmi_i2c_adapter(hdmi);
2075 if (IS_ERR(hdmi->ddc))
2079 hdmi->regs = devm_ioremap_resource(dev, iores);
2080 if (IS_ERR(hdmi->regs))
2081 return PTR_ERR(hdmi->regs);
2083 hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr");
2084 if (IS_ERR(hdmi->isfr_clk)) {
2085 ret = PTR_ERR(hdmi->isfr_clk);
2086 dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret);
2090 ret = clk_prepare_enable(hdmi->isfr_clk);
2092 dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret);
2096 hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb");
2097 if (IS_ERR(hdmi->iahb_clk)) {
2098 ret = PTR_ERR(hdmi->iahb_clk);
2099 dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret);
2103 ret = clk_prepare_enable(hdmi->iahb_clk);
2105 dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret);
2109 /* Product and revision IDs */
2111 "Detected HDMI controller 0x%x:0x%x:0x%x:0x%x\n",
2112 hdmi_readb(hdmi, HDMI_DESIGN_ID),
2113 hdmi_readb(hdmi, HDMI_REVISION_ID),
2114 hdmi_readb(hdmi, HDMI_PRODUCT_ID0),
2115 hdmi_readb(hdmi, HDMI_PRODUCT_ID1));
2117 initialize_hdmi_ih_mutes(hdmi);
2119 ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq,
2120 dw_hdmi_irq, IRQF_SHARED,
2121 dev_name(dev), hdmi);
2126 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
2127 * N and cts values before enabling phy
2129 hdmi_init_clk_regenerator(hdmi);
2131 hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
2132 HDMI_PHY_I2CM_INT_ADDR);
2134 hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
2135 HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
2136 HDMI_PHY_I2CM_CTLINT_ADDR);
2138 /* Re-init HPD polarity */
2139 hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
2141 /* Unmask HPD, clear transitory interrupts, then unmute */
2142 hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
2144 ret = dw_hdmi_register(drm, hdmi);
2148 #ifdef CONFIG_SWITCH
2149 hdmi->switchdev.name = "hdmi";
2150 switch_dev_register(&hdmi->switchdev);
2153 hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
2154 HDMI_IH_MUTE_PHY_STAT0);
2156 /* Unmute I2CM interrupts and reset HDMI DDC I2C master controller */
2158 dw_hdmi_i2c_init(hdmi);
2160 memset(&pdevinfo, 0, sizeof(pdevinfo));
2161 pdevinfo.parent = dev;
2162 pdevinfo.id = PLATFORM_DEVID_AUTO;
2164 config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID);
2165 config1 = hdmi_readb(hdmi, HDMI_CONFIG1_ID);
2167 if (config1 & HDMI_CONFIG1_AHB) {
2168 struct dw_hdmi_audio_data audio;
2170 audio.phys = iores->start;
2171 audio.base = hdmi->regs;
2174 audio.eld = hdmi->connector.eld;
2176 pdevinfo.name = "dw-hdmi-ahb-audio";
2177 pdevinfo.data = &audio;
2178 pdevinfo.size_data = sizeof(audio);
2179 pdevinfo.dma_mask = DMA_BIT_MASK(32);
2180 hdmi->audio = platform_device_register_full(&pdevinfo);
2181 } else if (config0 & HDMI_CONFIG0_I2S) {
2182 struct dw_hdmi_i2s_audio_data audio;
2185 audio.write = hdmi_writeb;
2186 audio.read = hdmi_readb;
2188 pdevinfo.name = "dw-hdmi-i2s-audio";
2189 pdevinfo.data = &audio;
2190 pdevinfo.size_data = sizeof(audio);
2191 pdevinfo.dma_mask = DMA_BIT_MASK(32);
2192 hdmi->audio = platform_device_register_full(&pdevinfo);
2195 dev_set_drvdata(dev, hdmi);
2201 i2c_del_adapter(&hdmi->i2c->adap);
2203 clk_disable_unprepare(hdmi->iahb_clk);
2205 clk_disable_unprepare(hdmi->isfr_clk);
2209 EXPORT_SYMBOL_GPL(dw_hdmi_bind);
2211 void dw_hdmi_unbind(struct device *dev, struct device *master, void *data)
2213 struct dw_hdmi *hdmi = dev_get_drvdata(dev);
2215 if (hdmi->audio && !IS_ERR(hdmi->audio))
2216 platform_device_unregister(hdmi->audio);
2218 /* Disable all interrupts */
2219 hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
2221 #ifdef CONFIG_SWITCH
2222 switch_dev_unregister(&hdmi->switchdev);
2224 hdmi->connector.funcs->destroy(&hdmi->connector);
2225 hdmi->encoder->funcs->destroy(hdmi->encoder);
2227 clk_disable_unprepare(hdmi->iahb_clk);
2228 clk_disable_unprepare(hdmi->isfr_clk);
2231 i2c_del_adapter(&hdmi->i2c->adap);
2233 i2c_put_adapter(hdmi->ddc);
2235 EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
2237 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
2238 MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
2239 MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
2240 MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>");
2241 MODULE_DESCRIPTION("DW HDMI transmitter driver");
2242 MODULE_LICENSE("GPL");
2243 MODULE_ALIAS("platform:dw-hdmi");