1 /* $NetBSD: anx_dp.c,v 1.6 2023/12/11 13:28:15 mlelstv Exp $ */
2
3 /*-
4 * Copyright (c) 2019 Jonathan A. Kollasch <jakllsch@kollasch.net>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: anx_dp.c,v 1.6 2023/12/11 13:28:15 mlelstv Exp $");
31
32 #include <sys/param.h>
33 #include <sys/bus.h>
34 #include <sys/conf.h>
35 #include <sys/device.h>
36 #include <sys/intr.h>
37 #include <sys/kernel.h>
38 #include <sys/systm.h>
39
40 #include <dev/ic/anx_dp.h>
41
42 #if ANXDP_AUDIO
43 #include <dev/audio/audio_dai.h>
44 #endif
45
46 #include <drm/drm_atomic_state_helper.h>
47 #include <drm/drm_crtc.h>
48 #include <drm/drm_crtc_helper.h>
49 #include <drm/drm_dp_helper.h>
50 #include <drm/drm_drv.h>
51 #include <drm/drm_edid.h>
52
53 #define ANXDP_DP_TX_VERSION 0x010
54 #define ANXDP_TX_SW_RESET 0x014
55 #define RESET_DP_TX __BIT(0)
56 #define ANXDP_FUNC_EN_1 0x018
57 #define MASTER_VID_FUNC_EN_N __BIT(7)
58 #define RK_VID_CAP_FUNC_EN_N __BIT(6)
59 #define SLAVE_VID_FUNC_EN_N __BIT(5)
60 #define RK_VID_FIFO_FUNC_EN_N __BIT(5)
61 #define AUD_FIFO_FUNC_EN_N __BIT(4)
62 #define AUD_FUNC_EN_N __BIT(3)
63 #define HDCP_FUNC_EN_N __BIT(2)
64 #define CRC_FUNC_EN_N __BIT(1)
65 #define SW_FUNC_EN_N __BIT(0)
66 #define ANXDP_FUNC_EN_2 0x01c
67 #define SSC_FUNC_EN_N __BIT(7)
68 #define AUX_FUNC_EN_N __BIT(2)
69 #define SERDES_FIFO_FUNC_EN_N __BIT(1)
70 #define LS_CLK_DOMAIN_FUNC_EN_N __BIT(0)
71 #define ANXDP_VIDEO_CTL_1 0x020
72 #define VIDEO_EN __BIT(7)
73 #define VIDEO_MUTE __BIT(6)
74 #define ANXDP_VIDEO_CTL_2 0x024
75 #define ANXDP_VIDEO_CTL_3 0x028
76 #define ANXDP_VIDEO_CTL_4 0x02c
77 #define ANXDP_VIDEO_CTL_8 0x03c
78 #define ANXDP_VIDEO_CTL_10 0x044
79 #define F_SEL __BIT(4)
80 #define SLAVE_I_SCAN_CFG __BIT(2)
81 #define SLAVE_VSYNC_P_CFG __BIT(1)
82 #define SLAVE_HSYNC_P_CFG __BIT(0)
83 #define ANXDP_PLL_REG_1 0x0fc
84 #define REF_CLK_24M __BIT(0)
85 #define RKANXDP_PD 0x12c
86 #define DP_INC_BG __BIT(7)
87 #define DP_EXP_PD __BIT(6)
88 #define DP_PHY_PD __BIT(5)
89 #define RK_AUX_PD __BIT(5)
90 #define AUX_PD __BIT(4)
91 #define RK_PLL_PD __BIT(4)
92 #define CHx_PD(x) __BIT(x) /* 0<=x<=3 */
93 #define DP_ALL_PD __BITS(7,0)
94 #define ANXDP_LANE_MAP 0x35c
95 #define ANXDP_ANALOG_CTL_1 0x370
96 #define TX_TERMINAL_CTRL_50_OHM __BIT(4)
97 #define ANXDP_ANALOG_CTL_2 0x374
98 #define SEL_24M __BIT(3)
99 #define TX_DVDD_BIT_1_0625V 0x4
100 #define ANXDP_ANALOG_CTL_3 0x378
101 #define DRIVE_DVDD_BIT_1_0625V (0x4 << 5)
102 #define VCO_BIT_600_MICRO (0x5 << 0)
103 #define ANXDP_PLL_FILTER_CTL_1 0x37c
104 #define PD_RING_OSC __BIT(6)
105 #define AUX_TERMINAL_CTRL_50_OHM (2 << 4)
106 #define TX_CUR1_2X __BIT(2)
107 #define TX_CUR_16_MA 3
108 #define ANXDP_TX_AMP_TUNING_CTL 0x380
109 #define ANXDP_AUX_HW_RETRY_CTL 0x390
110 #define AUX_BIT_PERIOD_EXPECTED_DELAY(x) __SHIFTIN((x), __BITS(10,8))
111 #define AUX_HW_RETRY_INTERVAL_600_US __SHIFTIN(0, __BITS(4,3))
112 #define AUX_HW_RETRY_INTERVAL_800_US __SHIFTIN(1, __BITS(4,3))
113 #define AUX_HW_RETRY_INTERVAL_1000_US __SHIFTIN(2, __BITS(4,3))
114 #define AUX_HW_RETRY_INTERVAL_1800_US __SHIFTIN(3, __BITS(4,3))
115 #define AUX_HW_RETRY_COUNT_SEL(x) __SHIFTIN((x), __BITS(2,0))
116 #define ANXDP_COMMON_INT_STA_1 0x3c4
117 #define PLL_LOCK_CHG __BIT(6)
118 #define ANXDP_COMMON_INT_STA_2 0x3c8
119 #define ANXDP_COMMON_INT_STA_3 0x3cc
120 #define ANXDP_COMMON_INT_STA_4 0x3d0
121 #define ANXDP_DP_INT_STA 0x3dc
122 #define INT_HPD __BIT(6)
123 #define HW_TRAINING_FINISH __BIT(5)
124 #define RPLY_RECEIV __BIT(1)
125 #define AUX_ERR __BIT(0)
126 #define ANXDP_SYS_CTL_1 0x600
127 #define DET_STA __BIT(2)
128 #define FORCE_DET __BIT(1)
129 #define DET_CTRL __BIT(0)
130 #define ANXDP_SYS_CTL_2 0x604
131 #define ANXDP_SYS_CTL_3 0x608
132 #define HPD_STATUS __BIT(6)
133 #define F_HPD __BIT(5)
134 #define HPD_CTRL __BIT(4)
135 #define HDCP_RDY __BIT(3)
136 #define STRM_VALID __BIT(2)
137 #define F_VALID __BIT(1)
138 #define VALID_CTRL __BIT(0)
139 #define ANXDP_SYS_CTL_4 0x60c
140 #define ANXDP_PKT_SEND_CTL 0x640
141 #define ANXDP_HDCP_CTL 0x648
142 #define ANXDP_LINK_BW_SET 0x680
143 #define ANXDP_LANE_COUNT_SET 0x684
144 #define ANXDP_TRAINING_PTN_SET 0x688
145 #define SCRAMBLING_DISABLE __BIT(5)
146 #define SW_TRAINING_PATTERN_SET_PTN2 __SHIFTIN(2, __BITS(1,0))
147 #define SW_TRAINING_PATTERN_SET_PTN1 __SHIFTIN(1, __BITS(1,0))
148 #define ANXDP_LNx_LINK_TRAINING_CTL(x) (0x68c + 4 * (x)) /* 0 <= x <= 3 */
149 #define MAX_PRE_REACH __BIT(5)
150 #define PRE_EMPHASIS_SET(x) __SHIFTIN((x), __BITS(4,3))
151 #define MAX_DRIVE_REACH __BIT(2)
152 #define DRIVE_CURRENT_SET(x) __SHIFTIN((x), __BITS(1,0))
153 #define ANXDP_DEBUG_CTL 0x6c0
154 #define PLL_LOCK __BIT(4)
155 #define F_PLL_LOCK __BIT(3)
156 #define PLL_LOCK_CTRL __BIT(2)
157 #define PN_INV __BIT(0)
158 #define ANXDP_LINK_DEBUG_CTL 0x6e0
159 #define ANXDP_PLL_CTL 0x71c
160 #define ANXDP_PHY_PD 0x720
161 #define ANXDP_PHY_TEST 0x724
162 #define MACRO_RST __BIT(5)
163 #define ANXDP_M_AUD_GEN_FILTER_TH 0x778
164 #define ANXDP_AUX_CH_STA 0x780
165 #define AUX_BUSY __BIT(4)
166 #define AUX_STATUS(x) __SHIFTOUT((x), __BITS(3,0))
167 #define ANXDP_AUX_ERR_NUM 0x784
168 #define ANXDP_AUX_CH_DEFER_CTL 0x788
169 #define DEFER_CTRL_EN __BIT(7)
170 #define DEFER_COUNT(x) __SHIFTIN((x), __BITS(6,0))
171 #define ANXDP_AUX_RX_COMM 0x78c
172 #define AUX_RX_COMM_I2C_DEFER __BIT(3)
173 #define AUX_RX_COMM_AUX_DEFER __BIT(1)
174 #define ANXDP_BUFFER_DATA_CTL 0x790
175 #define BUF_CLR __BIT(7)
176 #define BUF_DATA_COUNT(x) __SHIFTIN((x), __BITS(4,0))
177 #define ANXDP_AUX_CH_CTL_1 0x794
178 #define AUX_LENGTH(x) __SHIFTIN((x) - 1, __BITS(7,4))
179 #define AUX_TX_COMM(x) __SHIFTOUT(x, __BITS(3,0))
180 #define AUX_TX_COMM_DP __BIT(3)
181 #define AUX_TX_COMM_MOT __BIT(2)
182 #define AUX_TX_COMM_READ __BIT(0)
183 #define ANXDP_AUX_ADDR_7_0 0x798
184 #define AUX_ADDR_7_0(x) (((x) >> 0) & 0xff)
185 #define ANXDP_AUX_ADDR_15_8 0x79c
186 #define AUX_ADDR_15_8(x) (((x) >> 8) & 0xff)
187 #define ANXDP_AUX_ADDR_19_16 0x7a0
188 #define AUX_ADDR_19_16(x) (((x) >> 16) & 0xf)
189 #define ANXDP_AUX_CH_CTL_2 0x7a4
190 #define ADDR_ONLY __BIT(1)
191 #define AUX_EN __BIT(0)
192 #define ANXDP_BUF_DATA(x) (0x7c0 + 4 * (x))
193 #define ANXDP_SOC_GENERAL_CTL 0x800
194 #define AUDIO_MODE_SPDIF_MODE __BIT(8)
195 #define VIDEO_MODE_SLAVE_MODE __BIT(1)
196 #define ANXDP_CRC_CON 0x890
197 #define ANXDP_PLL_REG_2 0x9e4
198 #define ANXDP_PLL_REG_3 0x9e8
199 #define ANXDP_PLL_REG_4 0x9ec
200 #define ANXDP_PLL_REG_5 0xa00
201
202 struct anxdp_link {
203 uint8_t revision;
204 u_int rate;
205 u_int num_lanes;
206 bool enhanced_framing;
207 };
208
209 #if ANXDP_AUDIO
210 enum anxdp_dai_mixer_ctrl {
211 ANXDP_DAI_OUTPUT_CLASS,
212 ANXDP_DAI_INPUT_CLASS,
213
214 ANXDP_DAI_OUTPUT_MASTER_VOLUME,
215 ANXDP_DAI_INPUT_DAC_VOLUME,
216
217 ANXDP_DAI_MIXER_CTRL_LAST
218 };
219
220 static void
anxdp_audio_init(struct anxdp_softc * sc)221 anxdp_audio_init(struct anxdp_softc *sc)
222 {
223 }
224 #endif
225
226 static inline const bool
isrockchip(struct anxdp_softc * const sc)227 isrockchip(struct anxdp_softc * const sc)
228 {
229 return (sc->sc_flags & ANXDP_FLAG_ROCKCHIP) != 0;
230 }
231
232 static enum drm_connector_status
anxdp_connector_detect(struct drm_connector * connector,bool force)233 anxdp_connector_detect(struct drm_connector *connector, bool force)
234 {
235 #if 0
236 struct anxdp_connector *anxdp_connector = to_anxdp_connector(connector);
237 struct anxdp_softc * const sc = anxdp_connector->sc;
238
239 /* XXX HPD */
240 #endif
241 return connector_status_connected;
242 }
243
244 static void
anxdp_connector_destroy(struct drm_connector * connector)245 anxdp_connector_destroy(struct drm_connector *connector)
246 {
247 drm_connector_unregister(connector);
248 drm_connector_cleanup(connector);
249 }
250
251 static const struct drm_connector_funcs anxdp_connector_funcs = {
252 .dpms = drm_helper_connector_dpms,
253 .detect = anxdp_connector_detect,
254 .fill_modes = drm_helper_probe_single_connector_modes,
255 .destroy = anxdp_connector_destroy,
256 .reset = drm_atomic_helper_connector_reset,
257 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
258 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
259 };
260
261 static void
anxdp_analog_power_up_all(struct anxdp_softc * const sc)262 anxdp_analog_power_up_all(struct anxdp_softc * const sc)
263 {
264 const bus_size_t pd_reg = isrockchip(sc) ? RKANXDP_PD : ANXDP_PHY_PD;
265
266 bus_space_write_4(sc->sc_bst, sc->sc_bsh, pd_reg, DP_ALL_PD);
267 delay(15);
268 bus_space_write_4(sc->sc_bst, sc->sc_bsh, pd_reg,
269 DP_ALL_PD & ~DP_INC_BG);
270 delay(15);
271 bus_space_write_4(sc->sc_bst, sc->sc_bsh, pd_reg, 0);
272 }
273
274 static int
anxdp_await_pll_lock(struct anxdp_softc * const sc)275 anxdp_await_pll_lock(struct anxdp_softc * const sc)
276 {
277 u_int timeout;
278
279 for (timeout = 0; timeout < 100; timeout++) {
280 if ((bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_DEBUG_CTL) &
281 PLL_LOCK) != 0)
282 return 0;
283 delay(20);
284 }
285
286 return ETIMEDOUT;
287 }
288
289 static void
anxdp_init_hpd(struct anxdp_softc * const sc)290 anxdp_init_hpd(struct anxdp_softc * const sc)
291 {
292 uint32_t sc3;
293
294 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_COMMON_INT_STA_4, 0x7);
295 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_DP_INT_STA, INT_HPD);
296
297 sc3 = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_3);
298 sc3 &= ~(F_HPD | HPD_CTRL);
299 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_3, sc3);
300
301 sc3 = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_3);
302 sc3 |= F_HPD | HPD_CTRL;
303 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_3, sc3);
304 }
305
306 static void
anxdp_init_aux(struct anxdp_softc * const sc)307 anxdp_init_aux(struct anxdp_softc * const sc)
308 {
309 uint32_t fe2, pd, hrc;
310 const bus_size_t pd_reg = isrockchip(sc) ? RKANXDP_PD : ANXDP_PHY_PD;
311 const uint32_t pd_mask = isrockchip(sc) ? RK_AUX_PD : AUX_PD;
312
313 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_DP_INT_STA,
314 RPLY_RECEIV | AUX_ERR);
315
316 pd = bus_space_read_4(sc->sc_bst, sc->sc_bsh, pd_reg);
317 pd |= pd_mask;
318 bus_space_write_4(sc->sc_bst, sc->sc_bsh, pd_reg, pd);
319
320 delay(11);
321
322 pd = bus_space_read_4(sc->sc_bst, sc->sc_bsh, pd_reg);
323 pd &= ~pd_mask;
324 bus_space_write_4(sc->sc_bst, sc->sc_bsh, pd_reg, pd);
325
326 fe2 = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2);
327 fe2 |= AUX_FUNC_EN_N;
328 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2, fe2);
329
330 hrc = AUX_HW_RETRY_COUNT_SEL(0) | AUX_HW_RETRY_INTERVAL_600_US;
331 if (!isrockchip(sc))
332 hrc |= AUX_BIT_PERIOD_EXPECTED_DELAY(3);
333 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_HW_RETRY_CTL, hrc);
334
335 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_CH_DEFER_CTL,
336 DEFER_CTRL_EN | DEFER_COUNT(1));
337
338 fe2 = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2);
339 fe2 &= ~AUX_FUNC_EN_N;
340 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2, fe2);
341 }
342
343 static int
anxdp_connector_get_modes(struct drm_connector * connector)344 anxdp_connector_get_modes(struct drm_connector *connector)
345 {
346 struct anxdp_connector *anxdp_connector = to_anxdp_connector(connector);
347 struct anxdp_softc * const sc = anxdp_connector->sc;
348 struct edid *pedid = NULL;
349 int error;
350
351 pedid = drm_get_edid(connector, &sc->sc_dpaux.ddc);
352
353 #if ANXDP_AUDIO
354 if (pedid) {
355 anxdp_connector->monitor_audio =
356 drm_detect_monitor_audio(pedid);
357 } else {
358 anxdp_connector->monitor_audio = false;
359 }
360
361 #endif
362 drm_connector_update_edid_property(connector, pedid);
363 if (pedid == NULL)
364 return 0;
365
366 error = drm_add_edid_modes(connector, pedid);
367
368 if (pedid != NULL)
369 kfree(pedid);
370
371 return error;
372 }
373
374 static struct drm_encoder *
anxdp_connector_best_encoder(struct drm_connector * connector)375 anxdp_connector_best_encoder(struct drm_connector *connector)
376 {
377 struct anxdp_connector *anxdp_connector = to_anxdp_connector(connector);
378
379 return anxdp_connector->encoder;
380 }
381
382 static const struct drm_connector_helper_funcs anxdp_connector_helper_funcs = {
383 .get_modes = anxdp_connector_get_modes,
384 .best_encoder = anxdp_connector_best_encoder,
385 };
386
387 static int
anxdp_bridge_attach(struct drm_bridge * bridge)388 anxdp_bridge_attach(struct drm_bridge *bridge)
389 {
390 struct anxdp_softc * const sc = bridge->driver_private;
391 struct anxdp_connector *anxdp_connector = &sc->sc_connector;
392 struct drm_connector *connector = &anxdp_connector->base;
393 int error;
394
395 anxdp_connector->sc = sc;
396
397 connector->polled =
398 DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
399 connector->interlace_allowed = 0;
400 connector->doublescan_allowed = 0;
401
402 drm_connector_init(bridge->dev, connector, &anxdp_connector_funcs,
403 connector->connector_type);
404 drm_connector_helper_add(connector, &anxdp_connector_helper_funcs);
405
406 error = drm_connector_attach_encoder(connector, bridge->encoder);
407 if (error)
408 return error;
409
410 return drm_connector_register(connector);
411 }
412
413 static void
anxdp_macro_reset(struct anxdp_softc * const sc)414 anxdp_macro_reset(struct anxdp_softc * const sc)
415 {
416 uint32_t val;
417
418 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_PHY_TEST);
419 val |= MACRO_RST;
420 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PHY_TEST, val);
421 delay(10);
422 val &= ~MACRO_RST;
423 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PHY_TEST, val);
424 }
425
426 static void
anxdp_link_start(struct anxdp_softc * const sc,struct anxdp_link * const link)427 anxdp_link_start(struct anxdp_softc * const sc, struct anxdp_link * const link)
428 {
429 uint8_t training[4];
430 uint8_t bw[2];
431 uint32_t val;
432 int ret;
433
434 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_LINK_BW_SET,
435 drm_dp_link_rate_to_bw_code(link->rate));
436 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_LANE_COUNT_SET,
437 link->num_lanes);
438
439 bw[0] = drm_dp_link_rate_to_bw_code(link->rate);
440 bw[1] = link->num_lanes;
441 if (link->enhanced_framing)
442 bw[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
443 ret = drm_dp_dpcd_write(&sc->sc_dpaux, DP_LINK_BW_SET, bw, sizeof(bw));
444 if (ret < 0)
445 return;
446
447 for (u_int i = 0; i < link->num_lanes; i++) {
448 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
449 ANXDP_LNx_LINK_TRAINING_CTL(i));
450 val &= ~(PRE_EMPHASIS_SET(3)|DRIVE_CURRENT_SET(3));
451 val |= PRE_EMPHASIS_SET(0);
452 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
453 ANXDP_LNx_LINK_TRAINING_CTL(i), val);
454 }
455
456 if (anxdp_await_pll_lock(sc) != 0) {
457 device_printf(sc->sc_dev, "PLL lock timeout\n");
458 }
459
460 for (u_int i = 0; i < link->num_lanes; i++) {
461 training[i] = DP_TRAIN_PRE_EMPH_LEVEL_0 |
462 DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
463 }
464
465 drm_dp_dpcd_write(&sc->sc_dpaux, DP_TRAINING_LANE0_SET, training,
466 link->num_lanes);
467 }
468
469 static void
anxdp_process_clock_recovery(struct anxdp_softc * const sc,struct anxdp_link * const link)470 anxdp_process_clock_recovery(struct anxdp_softc * const sc,
471 struct anxdp_link * const link)
472 {
473 u_int i, tries;
474 uint8_t link_status[DP_LINK_STATUS_SIZE];
475 uint8_t training[4];
476
477 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_TRAINING_PTN_SET,
478 SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1);
479 drm_dp_dpcd_writeb(&sc->sc_dpaux, DP_TRAINING_PATTERN_SET,
480 DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1);
481
482 tries = 0;
483 again:
484 if (tries++ >= 10) {
485 device_printf(sc->sc_dev, "cr fail\n");
486 return;
487 }
488 drm_dp_link_train_clock_recovery_delay(sc->sc_dpcd);
489 if (DP_LINK_STATUS_SIZE !=
490 drm_dp_dpcd_read_link_status(&sc->sc_dpaux, link_status)) {
491 return;
492 }
493 if (!drm_dp_clock_recovery_ok(link_status, link->num_lanes)) {
494 goto cr_fail;
495 }
496
497 return;
498
499 cr_fail:
500 for (i = 0; i < link->num_lanes; i++) {
501 uint8_t vs, pe;
502 vs = drm_dp_get_adjust_request_voltage(link_status, i);
503 pe = drm_dp_get_adjust_request_pre_emphasis(link_status, i);
504 training[i] = vs | pe;
505 }
506 for (i = 0; i < link->num_lanes; i++) {
507 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
508 ANXDP_LNx_LINK_TRAINING_CTL(i), training[i]);
509 }
510 drm_dp_dpcd_write(&sc->sc_dpaux, DP_TRAINING_LANE0_SET, training,
511 link->num_lanes);
512 goto again;
513 }
514
515 static void
anxdp_process_eq(struct anxdp_softc * const sc,struct anxdp_link * const link)516 anxdp_process_eq(struct anxdp_softc * const sc, struct anxdp_link * const link)
517 {
518 u_int i, tries;
519 uint8_t link_status[DP_LINK_STATUS_SIZE];
520 uint8_t training[4];
521
522 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_TRAINING_PTN_SET,
523 SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2);
524 drm_dp_dpcd_writeb(&sc->sc_dpaux, DP_TRAINING_PATTERN_SET,
525 DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_2);
526
527 tries = 0;
528 again:
529 if (tries++ >= 10) {
530 device_printf(sc->sc_dev, "eq fail\n");
531 return;
532 }
533 drm_dp_link_train_channel_eq_delay(sc->sc_dpcd);
534 if (DP_LINK_STATUS_SIZE !=
535 drm_dp_dpcd_read_link_status(&sc->sc_dpaux, link_status)) {
536 return;
537 }
538 if (!drm_dp_channel_eq_ok(link_status, link->num_lanes)) {
539 goto eq_fail;
540 }
541
542 return;
543
544 eq_fail:
545 for (i = 0; i < link->num_lanes; i++) {
546 uint8_t vs, pe;
547 vs = drm_dp_get_adjust_request_voltage(link_status, i);
548 pe = drm_dp_get_adjust_request_pre_emphasis(link_status, i);
549 training[i] = vs | pe;
550 }
551 for (i = 0; i < link->num_lanes; i++) {
552 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
553 ANXDP_LNx_LINK_TRAINING_CTL(i), training[i]);
554 }
555 drm_dp_dpcd_write(&sc->sc_dpaux, DP_TRAINING_LANE0_SET, training,
556 link->num_lanes);
557 goto again;
558 }
559
560 static void
anxdp_train_link(struct anxdp_softc * const sc)561 anxdp_train_link(struct anxdp_softc * const sc)
562 {
563 struct anxdp_link link;
564 uint8_t values[3], power;
565 int ret;
566
567 anxdp_macro_reset(sc);
568
569 ret = drm_dp_dpcd_read(&sc->sc_dpaux, DP_DPCD_REV, values,
570 sizeof(values));
571 if (ret < 0) {
572 device_printf(sc->sc_dev, "link probe failed\n");
573 return;
574 }
575 memset(&link, 0, sizeof(link));
576 link.revision = values[0];
577 link.rate = drm_dp_bw_code_to_link_rate(values[1]);
578 link.num_lanes = values[2] & DP_MAX_LANE_COUNT_MASK;
579 if (values[2] & DP_ENHANCED_FRAME_CAP)
580 link.enhanced_framing = true;
581
582 if (link.revision >= 0x11) {
583 if (drm_dp_dpcd_readb(&sc->sc_dpaux, DP_SET_POWER, &power) < 0)
584 return;
585 power &= ~DP_SET_POWER_MASK;
586 power |= DP_SET_POWER_D0;
587 if (drm_dp_dpcd_writeb(&sc->sc_dpaux, DP_SET_POWER, power) < 0)
588 return;
589 delay(2000);
590 }
591
592 if (DP_RECEIVER_CAP_SIZE != drm_dp_dpcd_read(&sc->sc_dpaux, DP_DPCD_REV,
593 sc->sc_dpcd, DP_RECEIVER_CAP_SIZE))
594 return;
595
596 anxdp_link_start(sc, &link);
597 anxdp_process_clock_recovery(sc, &link);
598 anxdp_process_eq(sc, &link);
599
600 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_TRAINING_PTN_SET, 0);
601 drm_dp_dpcd_writeb(&sc->sc_dpaux, DP_TRAINING_PATTERN_SET,
602 DP_TRAINING_PATTERN_DISABLE);
603
604 }
605
606 static void
anxdp_bringup(struct anxdp_softc * const sc)607 anxdp_bringup(struct anxdp_softc * const sc)
608 {
609 uint32_t val;
610
611 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_1);
612 val &= ~VIDEO_EN;
613 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_1, val);
614
615 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_1);
616 val &= ~VIDEO_MUTE;
617 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_1, val);
618
619 val = SW_FUNC_EN_N;
620 if (isrockchip(sc)) {
621 val |= RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N;
622 } else {
623 val |= MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
624 AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | HDCP_FUNC_EN_N;
625 }
626 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_1, val);
627
628 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2,
629 SSC_FUNC_EN_N | AUX_FUNC_EN_N | SERDES_FIFO_FUNC_EN_N |
630 LS_CLK_DOMAIN_FUNC_EN_N);
631
632 delay(30);
633
634 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_M_AUD_GEN_FILTER_TH, 2);
635 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SOC_GENERAL_CTL, 0x101);
636
637 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_TX_SW_RESET,
638 RESET_DP_TX);
639
640 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_ANALOG_CTL_1,
641 TX_TERMINAL_CTRL_50_OHM);
642 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_ANALOG_CTL_2,
643 SEL_24M | TX_DVDD_BIT_1_0625V);
644 if (isrockchip(sc)) {
645 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PLL_REG_1,
646 REF_CLK_24M);
647 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PLL_REG_2,
648 0x95);
649 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PLL_REG_3,
650 0x40);
651 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PLL_REG_4,
652 0x58);
653 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PLL_REG_5,
654 0x22);
655 }
656 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_ANALOG_CTL_3,
657 DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO);
658 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_PLL_FILTER_CTL_1,
659 PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM | TX_CUR1_2X | TX_CUR_16_MA);
660 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_TX_AMP_TUNING_CTL, 0);
661
662 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_1);
663 val &= ~SW_FUNC_EN_N;
664 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_1, val);
665
666 anxdp_analog_power_up_all(sc);
667
668 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_COMMON_INT_STA_1,
669 PLL_LOCK_CHG);
670
671 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_DEBUG_CTL);
672 val &= ~(F_PLL_LOCK | PLL_LOCK_CTRL);
673 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_DEBUG_CTL, val);
674
675 if (anxdp_await_pll_lock(sc) != 0) {
676 device_printf(sc->sc_dev, "PLL lock timeout\n");
677 }
678
679 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2);
680 val &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N |
681 AUX_FUNC_EN_N);
682 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_2, val);
683
684 anxdp_init_hpd(sc);
685 anxdp_init_aux(sc);
686 }
687
688 static void
anxdp_bridge_enable(struct drm_bridge * bridge)689 anxdp_bridge_enable(struct drm_bridge *bridge)
690 {
691 struct anxdp_softc * const sc = bridge->driver_private;
692 uint32_t val;
693
694 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_1);
695 if (isrockchip(sc)) {
696 val &= ~(RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N);
697 } else {
698 val &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
699 val |= MASTER_VID_FUNC_EN_N;
700 }
701 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_FUNC_EN_1, val);
702
703 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_10);
704 val &= ~(SLAVE_I_SCAN_CFG|SLAVE_VSYNC_P_CFG|SLAVE_HSYNC_P_CFG);
705 if ((sc->sc_curmode.flags & DRM_MODE_FLAG_INTERLACE) != 0)
706 val |= SLAVE_I_SCAN_CFG;
707 if ((sc->sc_curmode.flags & DRM_MODE_FLAG_NVSYNC) != 0)
708 val |= SLAVE_VSYNC_P_CFG;
709 if ((sc->sc_curmode.flags & DRM_MODE_FLAG_NHSYNC) != 0)
710 val |= SLAVE_HSYNC_P_CFG;
711 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_10, val);
712
713 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SOC_GENERAL_CTL,
714 AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE);
715
716 anxdp_train_link(sc);
717
718 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_1);
719 val |= VIDEO_EN;
720 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_VIDEO_CTL_1, val);
721
722 if (sc->sc_panel != NULL &&
723 sc->sc_panel->funcs != NULL &&
724 sc->sc_panel->funcs->enable != NULL)
725 sc->sc_panel->funcs->enable(sc->sc_panel);
726 #if ANXDP_AUDIO
727
728 if (sc->sc_connector.monitor_audio)
729 anxdp_audio_init(sc);
730 #endif
731 }
732
733 static void
anxdp_bridge_pre_enable(struct drm_bridge * bridge)734 anxdp_bridge_pre_enable(struct drm_bridge *bridge)
735 {
736 }
737
738 static void
anxdp_bridge_disable(struct drm_bridge * bridge)739 anxdp_bridge_disable(struct drm_bridge *bridge)
740 {
741 }
742
743 static void
anxdp_bridge_post_disable(struct drm_bridge * bridge)744 anxdp_bridge_post_disable(struct drm_bridge *bridge)
745 {
746 }
747
748 static void
anxdp_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adjusted_mode)749 anxdp_bridge_mode_set(struct drm_bridge *bridge,
750 const struct drm_display_mode *mode,
751 const struct drm_display_mode *adjusted_mode)
752 {
753 struct anxdp_softc * const sc = bridge->driver_private;
754
755 sc->sc_curmode = *adjusted_mode;
756 }
757
758 static bool
anxdp_bridge_mode_fixup(struct drm_bridge * bridge,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)759 anxdp_bridge_mode_fixup(struct drm_bridge *bridge,
760 const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode)
761 {
762 return true;
763 }
764
765 static const struct drm_bridge_funcs anxdp_bridge_funcs = {
766 .attach = anxdp_bridge_attach,
767 .enable = anxdp_bridge_enable,
768 .pre_enable = anxdp_bridge_pre_enable,
769 .disable = anxdp_bridge_disable,
770 .post_disable = anxdp_bridge_post_disable,
771 .mode_set = anxdp_bridge_mode_set,
772 .mode_fixup = anxdp_bridge_mode_fixup,
773 };
774
775 #if ANXDP_AUDIO
776 static int
anxdp_dai_set_format(audio_dai_tag_t dai,u_int format)777 anxdp_dai_set_format(audio_dai_tag_t dai, u_int format)
778 {
779 return 0;
780 }
781
782 static int
anxdp_dai_add_device(audio_dai_tag_t dai,audio_dai_tag_t aux)783 anxdp_dai_add_device(audio_dai_tag_t dai, audio_dai_tag_t aux)
784 {
785 /* Not supported */
786 return 0;
787 }
788
789 static void
anxdp_audio_swvol_codec(audio_filter_arg_t * arg)790 anxdp_audio_swvol_codec(audio_filter_arg_t *arg)
791 {
792 struct anxdp_softc * const sc = arg->context;
793 const aint_t *src;
794 int16_t *dst;
795 u_int sample_count;
796 u_int i;
797
798 src = arg->src;
799 dst = arg->dst;
800 sample_count = arg->count * arg->srcfmt->channels;
801 for (i = 0; i < sample_count; i++) {
802 aint2_t v = (aint2_t)(*src++);
803 v = v * sc->sc_swvol / 255;
804 *dst++ = (aint_t)v;
805 }
806 }
807
808 static int
anxdp_audio_set_format(void * priv,int setmode,const audio_params_t * play,const audio_params_t * rec,audio_filter_reg_t * pfil,audio_filter_reg_t * rfil)809 anxdp_audio_set_format(void *priv, int setmode,
810 const audio_params_t *play, const audio_params_t *rec,
811 audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
812 {
813 struct anxdp_softc * const sc = priv;
814
815 pfil->codec = anxdp_audio_swvol_codec;
816 pfil->context = sc;
817
818 return 0;
819 }
820
821 static int
anxdp_audio_set_port(void * priv,mixer_ctrl_t * mc)822 anxdp_audio_set_port(void *priv, mixer_ctrl_t *mc)
823 {
824 struct anxdp_softc * const sc = priv;
825
826 switch (mc->dev) {
827 case ANXDP_DAI_OUTPUT_MASTER_VOLUME:
828 case ANXDP_DAI_INPUT_DAC_VOLUME:
829 sc->sc_swvol = mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT];
830 return 0;
831 default:
832 return ENXIO;
833 }
834 }
835
836 static int
anxdp_audio_get_port(void * priv,mixer_ctrl_t * mc)837 anxdp_audio_get_port(void *priv, mixer_ctrl_t *mc)
838 {
839 struct anxdp_softc * const sc = priv;
840
841 switch (mc->dev) {
842 case ANXDP_DAI_OUTPUT_MASTER_VOLUME:
843 case ANXDP_DAI_INPUT_DAC_VOLUME:
844 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = sc->sc_swvol;
845 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = sc->sc_swvol;
846 return 0;
847 default:
848 return ENXIO;
849 }
850 }
851
852 static int
anxdp_audio_query_devinfo(void * priv,mixer_devinfo_t * di)853 anxdp_audio_query_devinfo(void *priv, mixer_devinfo_t *di)
854 {
855 switch (di->index) {
856 case ANXDP_DAI_OUTPUT_CLASS:
857 di->mixer_class = di->index;
858 strcpy(di->label.name, AudioCoutputs);
859 di->type = AUDIO_MIXER_CLASS;
860 di->next = di->prev = AUDIO_MIXER_LAST;
861 return 0;
862
863 case ANXDP_DAI_INPUT_CLASS:
864 di->mixer_class = di->index;
865 strcpy(di->label.name, AudioCinputs);
866 di->type = AUDIO_MIXER_CLASS;
867 di->next = di->prev = AUDIO_MIXER_LAST;
868 return 0;
869
870 case ANXDP_DAI_OUTPUT_MASTER_VOLUME:
871 di->mixer_class = ANXDP_DAI_OUTPUT_CLASS;
872 strcpy(di->label.name, AudioNmaster);
873 di->un.v.delta = 1;
874 di->un.v.num_channels = 2;
875 strcpy(di->un.v.units.name, AudioNvolume);
876 di->type = AUDIO_MIXER_VALUE;
877 di->next = di->prev = AUDIO_MIXER_LAST;
878 return 0;
879
880 case ANXDP_DAI_INPUT_DAC_VOLUME:
881 di->mixer_class = ANXDP_DAI_INPUT_CLASS;
882 strcpy(di->label.name, AudioNdac);
883 di->un.v.delta = 1;
884 di->un.v.num_channels = 2;
885 strcpy(di->un.v.units.name, AudioNvolume);
886 di->type = AUDIO_MIXER_VALUE;
887 di->next = di->prev = AUDIO_MIXER_LAST;
888 return 0;
889
890 default:
891 return ENXIO;
892 }
893 }
894
895 static const struct audio_hw_if anxdp_dai_hw_if = {
896 .set_format = anxdp_audio_set_format,
897 .set_port = anxdp_audio_set_port,
898 .get_port = anxdp_audio_get_port,
899 .query_devinfo = anxdp_audio_query_devinfo,
900 };
901 #endif
902
903 static ssize_t
anxdp_dp_aux_transfer(struct drm_dp_aux * dpaux,struct drm_dp_aux_msg * dpmsg)904 anxdp_dp_aux_transfer(struct drm_dp_aux *dpaux, struct drm_dp_aux_msg *dpmsg)
905 {
906 struct anxdp_softc * const sc = container_of(dpaux, struct anxdp_softc,
907 sc_dpaux);
908 size_t loop_timeout = 0;
909 uint32_t val;
910 size_t i;
911 ssize_t ret = 0;
912
913 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_BUFFER_DATA_CTL,
914 BUF_CLR);
915
916 val = AUX_LENGTH(dpmsg->size);
917 if ((dpmsg->request & DP_AUX_I2C_MOT) != 0)
918 val |= AUX_TX_COMM_MOT;
919
920 switch (dpmsg->request & ~DP_AUX_I2C_MOT) {
921 case DP_AUX_I2C_WRITE:
922 break;
923 case DP_AUX_I2C_READ:
924 val |= AUX_TX_COMM_READ;
925 break;
926 case DP_AUX_NATIVE_WRITE:
927 val |= AUX_TX_COMM_DP;
928 break;
929 case DP_AUX_NATIVE_READ:
930 val |= AUX_TX_COMM_READ | AUX_TX_COMM_DP;
931 break;
932 }
933
934 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_CH_CTL_1, val);
935 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_ADDR_7_0,
936 AUX_ADDR_7_0(dpmsg->address));
937 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_ADDR_15_8,
938 AUX_ADDR_15_8(dpmsg->address));
939 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_ADDR_19_16,
940 AUX_ADDR_19_16(dpmsg->address));
941
942 if (!(dpmsg->request & DP_AUX_I2C_READ)) {
943 for (i = 0; i < dpmsg->size; i++) {
944 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
945 ANXDP_BUF_DATA(i),
946 ((const uint8_t *)(dpmsg->buffer))[i]);
947 ret++;
948 }
949 }
950
951
952 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_CH_CTL_2,
953 AUX_EN | ((dpmsg->size == 0) ? ADDR_ONLY : 0));
954
955 loop_timeout = 0;
956 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_CH_CTL_2);
957 while ((val & AUX_EN) != 0) {
958 if (++loop_timeout > 20000) {
959 ret = -ETIMEDOUT;
960 goto out;
961 }
962 delay(25);
963 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
964 ANXDP_AUX_CH_CTL_2);
965 }
966
967 loop_timeout = 0;
968 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_DP_INT_STA);
969 while (!(val & RPLY_RECEIV)) {
970 if (++loop_timeout > 2000) {
971 ret = -ETIMEDOUT;
972 goto out;
973 }
974 delay(10);
975 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
976 ANXDP_DP_INT_STA);
977 }
978
979 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_DP_INT_STA,
980 RPLY_RECEIV);
981
982 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_DP_INT_STA);
983 if ((val & AUX_ERR) != 0) {
984 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_DP_INT_STA,
985 AUX_ERR);
986 ret = -EREMOTEIO;
987 goto out;
988 }
989
990 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_CH_STA);
991 if (AUX_STATUS(val) != 0) {
992 ret = -EREMOTEIO;
993 goto out;
994 }
995
996 if ((dpmsg->request & DP_AUX_I2C_READ)) {
997 for (i = 0; i < dpmsg->size; i++) {
998 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
999 ANXDP_BUF_DATA(i));
1000 ((uint8_t *)(dpmsg->buffer))[i] = val & 0xffU;
1001 ret++;
1002 }
1003 }
1004
1005 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_AUX_RX_COMM);
1006 if (val == AUX_RX_COMM_AUX_DEFER)
1007 dpmsg->reply = DP_AUX_NATIVE_REPLY_DEFER;
1008 else if (val == AUX_RX_COMM_I2C_DEFER)
1009 dpmsg->reply = DP_AUX_I2C_REPLY_DEFER;
1010 else if ((dpmsg->request & ~DP_AUX_I2C_MOT) == DP_AUX_I2C_WRITE ||
1011 (dpmsg->request & ~DP_AUX_I2C_MOT) == DP_AUX_I2C_READ)
1012 dpmsg->reply = DP_AUX_I2C_REPLY_ACK;
1013 else if ((dpmsg->request & ~DP_AUX_I2C_MOT) == DP_AUX_NATIVE_WRITE ||
1014 (dpmsg->request & ~DP_AUX_I2C_MOT) == DP_AUX_NATIVE_READ)
1015 dpmsg->reply = DP_AUX_NATIVE_REPLY_ACK;
1016
1017 out:
1018 if (ret < 0)
1019 anxdp_init_aux(sc);
1020
1021 return ret;
1022 }
1023
1024 int
anxdp_attach(struct anxdp_softc * sc)1025 anxdp_attach(struct anxdp_softc *sc)
1026 {
1027 #if ANXDP_AUDIO
1028 sc->sc_swvol = 255;
1029
1030 /*
1031 * Initialize audio DAI
1032 */
1033 sc->sc_dai.dai_set_format = anxdp_dai_set_format;
1034 sc->sc_dai.dai_add_device = anxdp_dai_add_device;
1035 sc->sc_dai.dai_hw_if = &anxdp_dai_hw_if;
1036 sc->sc_dai.dai_dev = sc->sc_dev;
1037 sc->sc_dai.dai_priv = sc;
1038 #endif
1039
1040 sc->sc_dpaux.name = "DP Aux";
1041 sc->sc_dpaux.transfer = anxdp_dp_aux_transfer;
1042 sc->sc_dpaux.dev = sc->sc_dev;
1043 if (drm_dp_aux_register(&sc->sc_dpaux) != 0) {
1044 device_printf(sc->sc_dev, "registering DP Aux failed\n");
1045 }
1046
1047 anxdp_bringup(sc);
1048
1049 return 0;
1050 }
1051
1052 int
anxdp_bind(struct anxdp_softc * sc,struct drm_encoder * encoder)1053 anxdp_bind(struct anxdp_softc *sc, struct drm_encoder *encoder)
1054 {
1055 int error;
1056
1057 sc->sc_connector.encoder = encoder;
1058
1059 sc->sc_bridge.driver_private = sc;
1060 sc->sc_bridge.funcs = &anxdp_bridge_funcs;
1061
1062 error = drm_bridge_attach(encoder, &sc->sc_bridge, NULL);
1063 if (error)
1064 return EIO;
1065
1066 if (sc->sc_panel != NULL &&
1067 sc->sc_panel->funcs != NULL &&
1068 sc->sc_panel->funcs->prepare != NULL)
1069 sc->sc_panel->funcs->prepare(sc->sc_panel);
1070
1071 return 0;
1072 }
1073
1074 void anxdp0_dump(void);
1075
1076 void
anxdp0_dump(void)1077 anxdp0_dump(void)
1078 {
1079 extern struct cfdriver anxdp_cd;
1080 struct anxdp_softc * const sc = device_lookup_private(&anxdp_cd, 0);
1081 size_t i;
1082
1083 if (sc == NULL)
1084 return;
1085
1086 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_1,
1087 bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_1));
1088 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_2,
1089 bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_2));
1090 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_3,
1091 bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_SYS_CTL_3));
1092 for (i = 0x000; i < 0xb00; i += 4)
1093 device_printf(sc->sc_dev, "%03zx 0x%08x\n", i,
1094 bus_space_read_4(sc->sc_bst, sc->sc_bsh, i));
1095 }
1096