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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2016 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
5 * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
6 */
7
8#include <linux/clk.h>
9#include <linux/component.h>
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/of_device.h>
13#include <linux/of_graph.h>
14#include <linux/regulator/consumer.h>
15#include <linux/reset.h>
16
17#include <drm/bridge/dw_hdmi.h>
18#include <drm/drm_atomic_helper.h>
19#include <drm/drm_bridge.h>
20#include <drm/drm_device.h>
21#include <drm/drm_edid.h>
22#include <drm/drm_probe_helper.h>
23#include <drm/drm_print.h>
24
25#include <linux/media-bus-format.h>
26#include <linux/videodev2.h>
27
28#include "meson_drv.h"
29#include "meson_dw_hdmi.h"
30#include "meson_registers.h"
31#include "meson_vclk.h"
32#include "meson_venc.h"
33
34#define DRIVER_NAME "meson-dw-hdmi"
35#define DRIVER_DESC "Amlogic Meson HDMI-TX DRM driver"
36
37/**
38 * DOC: HDMI Output
39 *
40 * HDMI Output is composed of :
41 *
42 * - A Synopsys DesignWare HDMI Controller IP
43 * - A TOP control block controlling the Clocks and PHY
44 * - A custom HDMI PHY in order convert video to TMDS signal
45 *
46 * .. code::
47 *
48 * ___________________________________
49 * | HDMI TOP |<= HPD
50 * |___________________________________|
51 * | | |
52 * | Synopsys HDMI | HDMI PHY |=> TMDS
53 * | Controller |________________|
54 * |___________________________________|<=> DDC
55 *
56 *
57 * The HDMI TOP block only supports HPD sensing.
58 * The Synopsys HDMI Controller interrupt is routed
59 * through the TOP Block interrupt.
60 * Communication to the TOP Block and the Synopsys
61 * HDMI Controller is done a pair of addr+read/write
62 * registers.
63 * The HDMI PHY is configured by registers in the
64 * HHI register block.
65 *
66 * Pixel data arrives in 4:4:4 format from the VENC
67 * block and the VPU HDMI mux selects either the ENCI
68 * encoder for the 576i or 480i formats or the ENCP
69 * encoder for all the other formats including
70 * interlaced HD formats.
71 * The VENC uses a DVI encoder on top of the ENCI
72 * or ENCP encoders to generate DVI timings for the
73 * HDMI controller.
74 *
75 * GXBB, GXL and GXM embeds the Synopsys DesignWare
76 * HDMI TX IP version 2.01a with HDCP and I2C & S/PDIF
77 * audio source interfaces.
78 *
79 * We handle the following features :
80 *
81 * - HPD Rise & Fall interrupt
82 * - HDMI Controller Interrupt
83 * - HDMI PHY Init for 480i to 1080p60
84 * - VENC & HDMI Clock setup for 480i to 1080p60
85 * - VENC Mode setup for 480i to 1080p60
86 *
87 * What is missing :
88 *
89 * - PHY, Clock and Mode setup for 2k && 4k modes
90 * - SDDC Scrambling mode for HDMI 2.0a
91 * - HDCP Setup
92 * - CEC Management
93 */
94
95/* TOP Block Communication Channel */
96#define HDMITX_TOP_ADDR_REG 0x0
97#define HDMITX_TOP_DATA_REG 0x4
98#define HDMITX_TOP_CTRL_REG 0x8
99#define HDMITX_TOP_G12A_OFFSET 0x8000
100
101/* Controller Communication Channel */
102#define HDMITX_DWC_ADDR_REG 0x10
103#define HDMITX_DWC_DATA_REG 0x14
104#define HDMITX_DWC_CTRL_REG 0x18
105
106/* HHI Registers */
107#define HHI_MEM_PD_REG0 0x100 /* 0x40 */
108#define HHI_HDMI_CLK_CNTL 0x1cc /* 0x73 */
109#define HHI_HDMI_PHY_CNTL0 0x3a0 /* 0xe8 */
110#define HHI_HDMI_PHY_CNTL1 0x3a4 /* 0xe9 */
111#define HHI_HDMI_PHY_CNTL2 0x3a8 /* 0xea */
112#define HHI_HDMI_PHY_CNTL3 0x3ac /* 0xeb */
113#define HHI_HDMI_PHY_CNTL4 0x3b0 /* 0xec */
114#define HHI_HDMI_PHY_CNTL5 0x3b4 /* 0xed */
115
116static DEFINE_SPINLOCK(reg_lock);
117
118enum meson_venc_source {
119 MESON_VENC_SOURCE_NONE = 0,
120 MESON_VENC_SOURCE_ENCI = 1,
121 MESON_VENC_SOURCE_ENCP = 2,
122};
123
124struct meson_dw_hdmi;
125
126struct meson_dw_hdmi_data {
127 unsigned int (*top_read)(struct meson_dw_hdmi *dw_hdmi,
128 unsigned int addr);
129 void (*top_write)(struct meson_dw_hdmi *dw_hdmi,
130 unsigned int addr, unsigned int data);
131 unsigned int (*dwc_read)(struct meson_dw_hdmi *dw_hdmi,
132 unsigned int addr);
133 void (*dwc_write)(struct meson_dw_hdmi *dw_hdmi,
134 unsigned int addr, unsigned int data);
135};
136
137struct meson_dw_hdmi {
138 struct drm_encoder encoder;
139 struct drm_bridge bridge;
140 struct dw_hdmi_plat_data dw_plat_data;
141 struct meson_drm *priv;
142 struct device *dev;
143 void __iomem *hdmitx;
144 const struct meson_dw_hdmi_data *data;
145 struct reset_control *hdmitx_apb;
146 struct reset_control *hdmitx_ctrl;
147 struct reset_control *hdmitx_phy;
148 struct regulator *hdmi_supply;
149 u32 irq_stat;
150 struct dw_hdmi *hdmi;
151 unsigned long output_bus_fmt;
152};
153#define encoder_to_meson_dw_hdmi(x) \
154 container_of(x, struct meson_dw_hdmi, encoder)
155#define bridge_to_meson_dw_hdmi(x) \
156 container_of(x, struct meson_dw_hdmi, bridge)
157
158static inline int dw_hdmi_is_compatible(struct meson_dw_hdmi *dw_hdmi,
159 const char *compat)
160{
161 return of_device_is_compatible(dw_hdmi->dev->of_node, compat);
162}
163
164/* PHY (via TOP bridge) and Controller dedicated register interface */
165
166static unsigned int dw_hdmi_top_read(struct meson_dw_hdmi *dw_hdmi,
167 unsigned int addr)
168{
169 unsigned long flags;
170 unsigned int data;
171
172 spin_lock_irqsave(®_lock, flags);
173
174 /* ADDR must be written twice */
175 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG);
176 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG);
177
178 /* Read needs a second DATA read */
179 data = readl(dw_hdmi->hdmitx + HDMITX_TOP_DATA_REG);
180 data = readl(dw_hdmi->hdmitx + HDMITX_TOP_DATA_REG);
181
182 spin_unlock_irqrestore(®_lock, flags);
183
184 return data;
185}
186
187static unsigned int dw_hdmi_g12a_top_read(struct meson_dw_hdmi *dw_hdmi,
188 unsigned int addr)
189{
190 return readl(dw_hdmi->hdmitx + HDMITX_TOP_G12A_OFFSET + (addr << 2));
191}
192
193static inline void dw_hdmi_top_write(struct meson_dw_hdmi *dw_hdmi,
194 unsigned int addr, unsigned int data)
195{
196 unsigned long flags;
197
198 spin_lock_irqsave(®_lock, flags);
199
200 /* ADDR must be written twice */
201 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG);
202 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG);
203
204 /* Write needs single DATA write */
205 writel(data, dw_hdmi->hdmitx + HDMITX_TOP_DATA_REG);
206
207 spin_unlock_irqrestore(®_lock, flags);
208}
209
210static inline void dw_hdmi_g12a_top_write(struct meson_dw_hdmi *dw_hdmi,
211 unsigned int addr, unsigned int data)
212{
213 writel(data, dw_hdmi->hdmitx + HDMITX_TOP_G12A_OFFSET + (addr << 2));
214}
215
216/* Helper to change specific bits in PHY registers */
217static inline void dw_hdmi_top_write_bits(struct meson_dw_hdmi *dw_hdmi,
218 unsigned int addr,
219 unsigned int mask,
220 unsigned int val)
221{
222 unsigned int data = dw_hdmi->data->top_read(dw_hdmi, addr);
223
224 data &= ~mask;
225 data |= val;
226
227 dw_hdmi->data->top_write(dw_hdmi, addr, data);
228}
229
230static unsigned int dw_hdmi_dwc_read(struct meson_dw_hdmi *dw_hdmi,
231 unsigned int addr)
232{
233 unsigned long flags;
234 unsigned int data;
235
236 spin_lock_irqsave(®_lock, flags);
237
238 /* ADDR must be written twice */
239 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG);
240 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG);
241
242 /* Read needs a second DATA read */
243 data = readl(dw_hdmi->hdmitx + HDMITX_DWC_DATA_REG);
244 data = readl(dw_hdmi->hdmitx + HDMITX_DWC_DATA_REG);
245
246 spin_unlock_irqrestore(®_lock, flags);
247
248 return data;
249}
250
251static unsigned int dw_hdmi_g12a_dwc_read(struct meson_dw_hdmi *dw_hdmi,
252 unsigned int addr)
253{
254 return readb(dw_hdmi->hdmitx + addr);
255}
256
257static inline void dw_hdmi_dwc_write(struct meson_dw_hdmi *dw_hdmi,
258 unsigned int addr, unsigned int data)
259{
260 unsigned long flags;
261
262 spin_lock_irqsave(®_lock, flags);
263
264 /* ADDR must be written twice */
265 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG);
266 writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG);
267
268 /* Write needs single DATA write */
269 writel(data, dw_hdmi->hdmitx + HDMITX_DWC_DATA_REG);
270
271 spin_unlock_irqrestore(®_lock, flags);
272}
273
274static inline void dw_hdmi_g12a_dwc_write(struct meson_dw_hdmi *dw_hdmi,
275 unsigned int addr, unsigned int data)
276{
277 writeb(data, dw_hdmi->hdmitx + addr);
278}
279
280/* Helper to change specific bits in controller registers */
281static inline void dw_hdmi_dwc_write_bits(struct meson_dw_hdmi *dw_hdmi,
282 unsigned int addr,
283 unsigned int mask,
284 unsigned int val)
285{
286 unsigned int data = dw_hdmi->data->dwc_read(dw_hdmi, addr);
287
288 data &= ~mask;
289 data |= val;
290
291 dw_hdmi->data->dwc_write(dw_hdmi, addr, data);
292}
293
294/* Bridge */
295
296/* Setup PHY bandwidth modes */
297static void meson_hdmi_phy_setup_mode(struct meson_dw_hdmi *dw_hdmi,
298 const struct drm_display_mode *mode)
299{
300 struct meson_drm *priv = dw_hdmi->priv;
301 unsigned int pixel_clock = mode->clock;
302
303 /* For 420, pixel clock is half unlike venc clock */
304 if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
305 pixel_clock /= 2;
306
307 if (dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxl-dw-hdmi") ||
308 dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxm-dw-hdmi")) {
309 if (pixel_clock >= 371250) {
310 /* 5.94Gbps, 3.7125Gbps */
311 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x333d3282);
312 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2136315b);
313 } else if (pixel_clock >= 297000) {
314 /* 2.97Gbps */
315 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33303382);
316 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2036315b);
317 } else if (pixel_clock >= 148500) {
318 /* 1.485Gbps */
319 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33303362);
320 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2016315b);
321 } else {
322 /* 742.5Mbps, and below */
323 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33604142);
324 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x0016315b);
325 }
326 } else if (dw_hdmi_is_compatible(dw_hdmi,
327 "amlogic,meson-gxbb-dw-hdmi")) {
328 if (pixel_clock >= 371250) {
329 /* 5.94Gbps, 3.7125Gbps */
330 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33353245);
331 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2100115b);
332 } else if (pixel_clock >= 297000) {
333 /* 2.97Gbps */
334 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33634283);
335 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0xb000115b);
336 } else {
337 /* 1.485Gbps, and below */
338 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33632122);
339 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2000115b);
340 }
341 } else if (dw_hdmi_is_compatible(dw_hdmi,
342 "amlogic,meson-g12a-dw-hdmi")) {
343 if (pixel_clock >= 371250) {
344 /* 5.94Gbps, 3.7125Gbps */
345 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x37eb65c4);
346 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2ab0ff3b);
347 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL5, 0x0000080b);
348 } else if (pixel_clock >= 297000) {
349 /* 2.97Gbps */
350 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33eb6262);
351 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2ab0ff3b);
352 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL5, 0x00000003);
353 } else {
354 /* 1.485Gbps, and below */
355 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33eb4242);
356 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2ab0ff3b);
357 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL5, 0x00000003);
358 }
359 }
360}
361
362static inline void meson_dw_hdmi_phy_reset(struct meson_dw_hdmi *dw_hdmi)
363{
364 struct meson_drm *priv = dw_hdmi->priv;
365
366 /* Enable and software reset */
367 regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, 0xf, 0xf);
368
369 mdelay(2);
370
371 /* Enable and unreset */
372 regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, 0xf, 0xe);
373
374 mdelay(2);
375}
376
377static void dw_hdmi_set_vclk(struct meson_dw_hdmi *dw_hdmi,
378 const struct drm_display_mode *mode)
379{
380 struct meson_drm *priv = dw_hdmi->priv;
381 int vic = drm_match_cea_mode(mode);
382 unsigned int phy_freq;
383 unsigned int vclk_freq;
384 unsigned int venc_freq;
385 unsigned int hdmi_freq;
386
387 vclk_freq = mode->clock;
388
389 /* For 420, pixel clock is half unlike venc clock */
390 if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
391 vclk_freq /= 2;
392
393 /* TMDS clock is pixel_clock * 10 */
394 phy_freq = vclk_freq * 10;
395
396 if (!vic) {
397 meson_vclk_setup(priv, MESON_VCLK_TARGET_DMT, phy_freq,
398 vclk_freq, vclk_freq, vclk_freq, false);
399 return;
400 }
401
402 /* 480i/576i needs global pixel doubling */
403 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
404 vclk_freq *= 2;
405
406 venc_freq = vclk_freq;
407 hdmi_freq = vclk_freq;
408
409 /* VENC double pixels for 1080i, 720p and YUV420 modes */
410 if (meson_venc_hdmi_venc_repeat(vic) ||
411 dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
412 venc_freq *= 2;
413
414 vclk_freq = max(venc_freq, hdmi_freq);
415
416 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
417 venc_freq /= 2;
418
419 DRM_DEBUG_DRIVER("vclk:%d phy=%d venc=%d hdmi=%d enci=%d\n",
420 phy_freq, vclk_freq, venc_freq, hdmi_freq,
421 priv->venc.hdmi_use_enci);
422
423 meson_vclk_setup(priv, MESON_VCLK_TARGET_HDMI, phy_freq, vclk_freq,
424 venc_freq, hdmi_freq, priv->venc.hdmi_use_enci);
425}
426
427static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
428 const struct drm_display_info *display,
429 const struct drm_display_mode *mode)
430{
431 struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data;
432 struct meson_drm *priv = dw_hdmi->priv;
433 unsigned int wr_clk =
434 readl_relaxed(priv->io_base + _REG(VPU_HDMI_SETTING));
435
436 DRM_DEBUG_DRIVER("\"%s\" div%d\n", mode->name,
437 mode->clock > 340000 ? 40 : 10);
438
439 /* Enable clocks */
440 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, 0xffff, 0x100);
441
442 /* Bring HDMITX MEM output of power down */
443 regmap_update_bits(priv->hhi, HHI_MEM_PD_REG0, 0xff << 8, 0);
444
445 /* Bring out of reset */
446 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_SW_RESET, 0);
447
448 /* Enable internal pixclk, tmds_clk, spdif_clk, i2s_clk, cecclk */
449 dw_hdmi_top_write_bits(dw_hdmi, HDMITX_TOP_CLK_CNTL,
450 0x3, 0x3);
451
452 /* Enable cec_clk and hdcp22_tmdsclk_en */
453 dw_hdmi_top_write_bits(dw_hdmi, HDMITX_TOP_CLK_CNTL,
454 0x3 << 4, 0x3 << 4);
455
456 /* Enable normal output to PHY */
457 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_BIST_CNTL, BIT(12));
458
459 /* TMDS pattern setup */
460 if (mode->clock > 340000 &&
461 dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_YUV8_1X24) {
462 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_01,
463 0);
464 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_23,
465 0x03ff03ff);
466 } else {
467 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_01,
468 0x001f001f);
469 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_23,
470 0x001f001f);
471 }
472
473 /* Load TMDS pattern */
474 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_CNTL, 0x1);
475 msleep(20);
476 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_CNTL, 0x2);
477
478 /* Setup PHY parameters */
479 meson_hdmi_phy_setup_mode(dw_hdmi, mode);
480
481 /* Setup PHY */
482 regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1,
483 0xffff << 16, 0x0390 << 16);
484
485 /* BIT_INVERT */
486 if (dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxl-dw-hdmi") ||
487 dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxm-dw-hdmi") ||
488 dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-g12a-dw-hdmi"))
489 regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1,
490 BIT(17), 0);
491 else
492 regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1,
493 BIT(17), BIT(17));
494
495 /* Disable clock, fifo, fifo_wr */
496 regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, 0xf, 0);
497
498 dw_hdmi_set_high_tmds_clock_ratio(hdmi, display);
499
500 msleep(100);
501
502 /* Reset PHY 3 times in a row */
503 meson_dw_hdmi_phy_reset(dw_hdmi);
504 meson_dw_hdmi_phy_reset(dw_hdmi);
505 meson_dw_hdmi_phy_reset(dw_hdmi);
506
507 /* Temporary Disable VENC video stream */
508 if (priv->venc.hdmi_use_enci)
509 writel_relaxed(0, priv->io_base + _REG(ENCI_VIDEO_EN));
510 else
511 writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN));
512
513 /* Temporary Disable HDMI video stream to HDMI-TX */
514 writel_bits_relaxed(0x3, 0,
515 priv->io_base + _REG(VPU_HDMI_SETTING));
516 writel_bits_relaxed(0xf << 8, 0,
517 priv->io_base + _REG(VPU_HDMI_SETTING));
518
519 /* Re-Enable VENC video stream */
520 if (priv->venc.hdmi_use_enci)
521 writel_relaxed(1, priv->io_base + _REG(ENCI_VIDEO_EN));
522 else
523 writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN));
524
525 /* Push back HDMI clock settings */
526 writel_bits_relaxed(0xf << 8, wr_clk & (0xf << 8),
527 priv->io_base + _REG(VPU_HDMI_SETTING));
528
529 /* Enable and Select HDMI video source for HDMI-TX */
530 if (priv->venc.hdmi_use_enci)
531 writel_bits_relaxed(0x3, MESON_VENC_SOURCE_ENCI,
532 priv->io_base + _REG(VPU_HDMI_SETTING));
533 else
534 writel_bits_relaxed(0x3, MESON_VENC_SOURCE_ENCP,
535 priv->io_base + _REG(VPU_HDMI_SETTING));
536
537 return 0;
538}
539
540static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi,
541 void *data)
542{
543 struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data;
544 struct meson_drm *priv = dw_hdmi->priv;
545
546 DRM_DEBUG_DRIVER("\n");
547
548 regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0);
549}
550
551static enum drm_connector_status dw_hdmi_read_hpd(struct dw_hdmi *hdmi,
552 void *data)
553{
554 struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data;
555
556 return !!dw_hdmi->data->top_read(dw_hdmi, HDMITX_TOP_STAT0) ?
557 connector_status_connected : connector_status_disconnected;
558}
559
560static void dw_hdmi_setup_hpd(struct dw_hdmi *hdmi,
561 void *data)
562{
563 struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data;
564
565 /* Setup HPD Filter */
566 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_HPD_FILTER,
567 (0xa << 12) | 0xa0);
568
569 /* Clear interrupts */
570 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_INTR_STAT_CLR,
571 HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL);
572
573 /* Unmask interrupts */
574 dw_hdmi_top_write_bits(dw_hdmi, HDMITX_TOP_INTR_MASKN,
575 HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL,
576 HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL);
577}
578
579static const struct dw_hdmi_phy_ops meson_dw_hdmi_phy_ops = {
580 .init = dw_hdmi_phy_init,
581 .disable = dw_hdmi_phy_disable,
582 .read_hpd = dw_hdmi_read_hpd,
583 .setup_hpd = dw_hdmi_setup_hpd,
584};
585
586static irqreturn_t dw_hdmi_top_irq(int irq, void *dev_id)
587{
588 struct meson_dw_hdmi *dw_hdmi = dev_id;
589 u32 stat;
590
591 stat = dw_hdmi->data->top_read(dw_hdmi, HDMITX_TOP_INTR_STAT);
592 dw_hdmi->data->top_write(dw_hdmi, HDMITX_TOP_INTR_STAT_CLR, stat);
593
594 /* HPD Events, handle in the threaded interrupt handler */
595 if (stat & (HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL)) {
596 dw_hdmi->irq_stat = stat;
597 return IRQ_WAKE_THREAD;
598 }
599
600 /* HDMI Controller Interrupt */
601 if (stat & 1)
602 return IRQ_NONE;
603
604 /* TOFIX Handle HDCP Interrupts */
605
606 return IRQ_HANDLED;
607}
608
609/* Threaded interrupt handler to manage HPD events */
610static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
611{
612 struct meson_dw_hdmi *dw_hdmi = dev_id;
613 u32 stat = dw_hdmi->irq_stat;
614
615 /* HPD Events */
616 if (stat & (HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL)) {
617 bool hpd_connected = false;
618
619 if (stat & HDMITX_TOP_INTR_HPD_RISE)
620 hpd_connected = true;
621
622 dw_hdmi_setup_rx_sense(dw_hdmi->hdmi, hpd_connected,
623 hpd_connected);
624
625 drm_helper_hpd_irq_event(dw_hdmi->encoder.dev);
626 }
627
628 return IRQ_HANDLED;
629}
630
631static enum drm_mode_status
632dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
633 const struct drm_display_info *display_info,
634 const struct drm_display_mode *mode)
635{
636 struct meson_dw_hdmi *dw_hdmi = data;
637 struct meson_drm *priv = dw_hdmi->priv;
638 bool is_hdmi2_sink = display_info->hdmi.scdc.supported;
639 unsigned int phy_freq;
640 unsigned int vclk_freq;
641 unsigned int venc_freq;
642 unsigned int hdmi_freq;
643 int vic = drm_match_cea_mode(mode);
644 enum drm_mode_status status;
645
646 DRM_DEBUG_DRIVER("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
647
648 /* If sink does not support 540MHz, reject the non-420 HDMI2 modes */
649 if (display_info->max_tmds_clock &&
650 mode->clock > display_info->max_tmds_clock &&
651 !drm_mode_is_420_only(display_info, mode) &&
652 !drm_mode_is_420_also(display_info, mode))
653 return MODE_BAD;
654
655 /* Check against non-VIC supported modes */
656 if (!vic) {
657 status = meson_venc_hdmi_supported_mode(mode);
658 if (status != MODE_OK)
659 return status;
660
661 return meson_vclk_dmt_supported_freq(priv, mode->clock);
662 /* Check against supported VIC modes */
663 } else if (!meson_venc_hdmi_supported_vic(vic))
664 return MODE_BAD;
665
666 vclk_freq = mode->clock;
667
668 /* For 420, pixel clock is half unlike venc clock */
669 if (drm_mode_is_420_only(display_info, mode) ||
670 (!is_hdmi2_sink &&
671 drm_mode_is_420_also(display_info, mode)))
672 vclk_freq /= 2;
673
674 /* TMDS clock is pixel_clock * 10 */
675 phy_freq = vclk_freq * 10;
676
677 /* 480i/576i needs global pixel doubling */
678 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
679 vclk_freq *= 2;
680
681 venc_freq = vclk_freq;
682 hdmi_freq = vclk_freq;
683
684 /* VENC double pixels for 1080i, 720p and YUV420 modes */
685 if (meson_venc_hdmi_venc_repeat(vic) ||
686 drm_mode_is_420_only(display_info, mode) ||
687 (!is_hdmi2_sink &&
688 drm_mode_is_420_also(display_info, mode)))
689 venc_freq *= 2;
690
691 vclk_freq = max(venc_freq, hdmi_freq);
692
693 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
694 venc_freq /= 2;
695
696 dev_dbg(dw_hdmi->dev, "%s: vclk:%d phy=%d venc=%d hdmi=%d\n",
697 __func__, phy_freq, vclk_freq, venc_freq, hdmi_freq);
698
699 return meson_vclk_vic_supported_freq(priv, phy_freq, vclk_freq);
700}
701
702/* Encoder */
703
704static const u32 meson_dw_hdmi_out_bus_fmts[] = {
705 MEDIA_BUS_FMT_YUV8_1X24,
706 MEDIA_BUS_FMT_UYYVYY8_0_5X24,
707};
708
709static void meson_venc_hdmi_encoder_destroy(struct drm_encoder *encoder)
710{
711 drm_encoder_cleanup(encoder);
712}
713
714static const struct drm_encoder_funcs meson_venc_hdmi_encoder_funcs = {
715 .destroy = meson_venc_hdmi_encoder_destroy,
716};
717
718static u32 *
719meson_venc_hdmi_encoder_get_inp_bus_fmts(struct drm_bridge *bridge,
720 struct drm_bridge_state *bridge_state,
721 struct drm_crtc_state *crtc_state,
722 struct drm_connector_state *conn_state,
723 u32 output_fmt,
724 unsigned int *num_input_fmts)
725{
726 u32 *input_fmts = NULL;
727 int i;
728
729 *num_input_fmts = 0;
730
731 for (i = 0 ; i < ARRAY_SIZE(meson_dw_hdmi_out_bus_fmts) ; ++i) {
732 if (output_fmt == meson_dw_hdmi_out_bus_fmts[i]) {
733 *num_input_fmts = 1;
734 input_fmts = kcalloc(*num_input_fmts,
735 sizeof(*input_fmts),
736 GFP_KERNEL);
737 if (!input_fmts)
738 return NULL;
739
740 input_fmts[0] = output_fmt;
741
742 break;
743 }
744 }
745
746 return input_fmts;
747}
748
749static int meson_venc_hdmi_encoder_atomic_check(struct drm_bridge *bridge,
750 struct drm_bridge_state *bridge_state,
751 struct drm_crtc_state *crtc_state,
752 struct drm_connector_state *conn_state)
753{
754 struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
755
756 dw_hdmi->output_bus_fmt = bridge_state->output_bus_cfg.format;
757
758 DRM_DEBUG_DRIVER("output_bus_fmt %lx\n", dw_hdmi->output_bus_fmt);
759
760 return 0;
761}
762
763static void meson_venc_hdmi_encoder_disable(struct drm_bridge *bridge)
764{
765 struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
766 struct meson_drm *priv = dw_hdmi->priv;
767
768 DRM_DEBUG_DRIVER("\n");
769
770 writel_bits_relaxed(0x3, 0,
771 priv->io_base + _REG(VPU_HDMI_SETTING));
772
773 writel_relaxed(0, priv->io_base + _REG(ENCI_VIDEO_EN));
774 writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN));
775}
776
777static void meson_venc_hdmi_encoder_enable(struct drm_bridge *bridge)
778{
779 struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
780 struct meson_drm *priv = dw_hdmi->priv;
781
782 DRM_DEBUG_DRIVER("%s\n", priv->venc.hdmi_use_enci ? "VENCI" : "VENCP");
783
784 if (priv->venc.hdmi_use_enci)
785 writel_relaxed(1, priv->io_base + _REG(ENCI_VIDEO_EN));
786 else
787 writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN));
788}
789
790static void meson_venc_hdmi_encoder_mode_set(struct drm_bridge *bridge,
791 const struct drm_display_mode *mode,
792 const struct drm_display_mode *adjusted_mode)
793{
794 struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
795 struct meson_drm *priv = dw_hdmi->priv;
796 int vic = drm_match_cea_mode(mode);
797 unsigned int ycrcb_map = VPU_HDMI_OUTPUT_CBYCR;
798 bool yuv420_mode = false;
799
800 DRM_DEBUG_DRIVER("\"%s\" vic %d\n", mode->name, vic);
801
802 if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24) {
803 ycrcb_map = VPU_HDMI_OUTPUT_CRYCB;
804 yuv420_mode = true;
805 }
806
807 /* VENC + VENC-DVI Mode setup */
808 meson_venc_hdmi_mode_set(priv, vic, ycrcb_map, yuv420_mode, mode);
809
810 /* VCLK Set clock */
811 dw_hdmi_set_vclk(dw_hdmi, mode);
812
813 if (dw_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24)
814 /* Setup YUV420 to HDMI-TX, no 10bit diphering */
815 writel_relaxed(2 | (2 << 2),
816 priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
817 else
818 /* Setup YUV444 to HDMI-TX, no 10bit diphering */
819 writel_relaxed(0, priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
820}
821
822static const struct drm_bridge_funcs meson_venc_hdmi_encoder_bridge_funcs = {
823 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
824 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
825 .atomic_get_input_bus_fmts = meson_venc_hdmi_encoder_get_inp_bus_fmts,
826 .atomic_reset = drm_atomic_helper_bridge_reset,
827 .atomic_check = meson_venc_hdmi_encoder_atomic_check,
828 .enable = meson_venc_hdmi_encoder_enable,
829 .disable = meson_venc_hdmi_encoder_disable,
830 .mode_set = meson_venc_hdmi_encoder_mode_set,
831};
832
833/* DW HDMI Regmap */
834
835static int meson_dw_hdmi_reg_read(void *context, unsigned int reg,
836 unsigned int *result)
837{
838 struct meson_dw_hdmi *dw_hdmi = context;
839
840 *result = dw_hdmi->data->dwc_read(dw_hdmi, reg);
841
842 return 0;
843
844}
845
846static int meson_dw_hdmi_reg_write(void *context, unsigned int reg,
847 unsigned int val)
848{
849 struct meson_dw_hdmi *dw_hdmi = context;
850
851 dw_hdmi->data->dwc_write(dw_hdmi, reg, val);
852
853 return 0;
854}
855
856static const struct regmap_config meson_dw_hdmi_regmap_config = {
857 .reg_bits = 32,
858 .val_bits = 8,
859 .reg_read = meson_dw_hdmi_reg_read,
860 .reg_write = meson_dw_hdmi_reg_write,
861 .max_register = 0x10000,
862 .fast_io = true,
863};
864
865static const struct meson_dw_hdmi_data meson_dw_hdmi_gx_data = {
866 .top_read = dw_hdmi_top_read,
867 .top_write = dw_hdmi_top_write,
868 .dwc_read = dw_hdmi_dwc_read,
869 .dwc_write = dw_hdmi_dwc_write,
870};
871
872static const struct meson_dw_hdmi_data meson_dw_hdmi_g12a_data = {
873 .top_read = dw_hdmi_g12a_top_read,
874 .top_write = dw_hdmi_g12a_top_write,
875 .dwc_read = dw_hdmi_g12a_dwc_read,
876 .dwc_write = dw_hdmi_g12a_dwc_write,
877};
878
879static bool meson_hdmi_connector_is_available(struct device *dev)
880{
881 struct device_node *ep, *remote;
882
883 /* HDMI Connector is on the second port, first endpoint */
884 ep = of_graph_get_endpoint_by_regs(dev->of_node, 1, 0);
885 if (!ep)
886 return false;
887
888 /* If the endpoint node exists, consider it enabled */
889 remote = of_graph_get_remote_port(ep);
890 if (remote) {
891 of_node_put(ep);
892 return true;
893 }
894
895 of_node_put(ep);
896 of_node_put(remote);
897
898 return false;
899}
900
901static void meson_dw_hdmi_init(struct meson_dw_hdmi *meson_dw_hdmi)
902{
903 struct meson_drm *priv = meson_dw_hdmi->priv;
904
905 /* Enable clocks */
906 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, 0xffff, 0x100);
907
908 /* Bring HDMITX MEM output of power down */
909 regmap_update_bits(priv->hhi, HHI_MEM_PD_REG0, 0xff << 8, 0);
910
911 /* Reset HDMITX APB & TX & PHY */
912 reset_control_reset(meson_dw_hdmi->hdmitx_apb);
913 reset_control_reset(meson_dw_hdmi->hdmitx_ctrl);
914 reset_control_reset(meson_dw_hdmi->hdmitx_phy);
915
916 /* Enable APB3 fail on error */
917 if (!meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
918 writel_bits_relaxed(BIT(15), BIT(15),
919 meson_dw_hdmi->hdmitx + HDMITX_TOP_CTRL_REG);
920 writel_bits_relaxed(BIT(15), BIT(15),
921 meson_dw_hdmi->hdmitx + HDMITX_DWC_CTRL_REG);
922 }
923
924 /* Bring out of reset */
925 meson_dw_hdmi->data->top_write(meson_dw_hdmi,
926 HDMITX_TOP_SW_RESET, 0);
927
928 msleep(20);
929
930 meson_dw_hdmi->data->top_write(meson_dw_hdmi,
931 HDMITX_TOP_CLK_CNTL, 0xff);
932
933 /* Enable HDMI-TX Interrupt */
934 meson_dw_hdmi->data->top_write(meson_dw_hdmi, HDMITX_TOP_INTR_STAT_CLR,
935 HDMITX_TOP_INTR_CORE);
936
937 meson_dw_hdmi->data->top_write(meson_dw_hdmi, HDMITX_TOP_INTR_MASKN,
938 HDMITX_TOP_INTR_CORE);
939
940}
941
942static void meson_disable_regulator(void *data)
943{
944 regulator_disable(data);
945}
946
947static void meson_disable_clk(void *data)
948{
949 clk_disable_unprepare(data);
950}
951
952static int meson_enable_clk(struct device *dev, char *name)
953{
954 struct clk *clk;
955 int ret;
956
957 clk = devm_clk_get(dev, name);
958 if (IS_ERR(clk)) {
959 dev_err(dev, "Unable to get %s pclk\n", name);
960 return PTR_ERR(clk);
961 }
962
963 ret = clk_prepare_enable(clk);
964 if (!ret)
965 ret = devm_add_action_or_reset(dev, meson_disable_clk, clk);
966
967 return ret;
968}
969
970static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
971 void *data)
972{
973 struct platform_device *pdev = to_platform_device(dev);
974 const struct meson_dw_hdmi_data *match;
975 struct meson_dw_hdmi *meson_dw_hdmi;
976 struct drm_device *drm = data;
977 struct meson_drm *priv = drm->dev_private;
978 struct dw_hdmi_plat_data *dw_plat_data;
979 struct drm_bridge *next_bridge;
980 struct drm_encoder *encoder;
981 struct resource *res;
982 int irq;
983 int ret;
984
985 DRM_DEBUG_DRIVER("\n");
986
987 if (!meson_hdmi_connector_is_available(dev)) {
988 dev_info(drm->dev, "HDMI Output connector not available\n");
989 return -ENODEV;
990 }
991
992 match = of_device_get_match_data(&pdev->dev);
993 if (!match) {
994 dev_err(&pdev->dev, "failed to get match data\n");
995 return -ENODEV;
996 }
997
998 meson_dw_hdmi = devm_kzalloc(dev, sizeof(*meson_dw_hdmi),
999 GFP_KERNEL);
1000 if (!meson_dw_hdmi)
1001 return -ENOMEM;
1002
1003 meson_dw_hdmi->priv = priv;
1004 meson_dw_hdmi->dev = dev;
1005 meson_dw_hdmi->data = match;
1006 dw_plat_data = &meson_dw_hdmi->dw_plat_data;
1007 encoder = &meson_dw_hdmi->encoder;
1008
1009 meson_dw_hdmi->hdmi_supply = devm_regulator_get_optional(dev, "hdmi");
1010 if (IS_ERR(meson_dw_hdmi->hdmi_supply)) {
1011 if (PTR_ERR(meson_dw_hdmi->hdmi_supply) == -EPROBE_DEFER)
1012 return -EPROBE_DEFER;
1013 meson_dw_hdmi->hdmi_supply = NULL;
1014 } else {
1015 ret = regulator_enable(meson_dw_hdmi->hdmi_supply);
1016 if (ret)
1017 return ret;
1018 ret = devm_add_action_or_reset(dev, meson_disable_regulator,
1019 meson_dw_hdmi->hdmi_supply);
1020 if (ret)
1021 return ret;
1022 }
1023
1024 meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev,
1025 "hdmitx_apb");
1026 if (IS_ERR(meson_dw_hdmi->hdmitx_apb)) {
1027 dev_err(dev, "Failed to get hdmitx_apb reset\n");
1028 return PTR_ERR(meson_dw_hdmi->hdmitx_apb);
1029 }
1030
1031 meson_dw_hdmi->hdmitx_ctrl = devm_reset_control_get_exclusive(dev,
1032 "hdmitx");
1033 if (IS_ERR(meson_dw_hdmi->hdmitx_ctrl)) {
1034 dev_err(dev, "Failed to get hdmitx reset\n");
1035 return PTR_ERR(meson_dw_hdmi->hdmitx_ctrl);
1036 }
1037
1038 meson_dw_hdmi->hdmitx_phy = devm_reset_control_get_exclusive(dev,
1039 "hdmitx_phy");
1040 if (IS_ERR(meson_dw_hdmi->hdmitx_phy)) {
1041 dev_err(dev, "Failed to get hdmitx_phy reset\n");
1042 return PTR_ERR(meson_dw_hdmi->hdmitx_phy);
1043 }
1044
1045 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1046 meson_dw_hdmi->hdmitx = devm_ioremap_resource(dev, res);
1047 if (IS_ERR(meson_dw_hdmi->hdmitx))
1048 return PTR_ERR(meson_dw_hdmi->hdmitx);
1049
1050 ret = meson_enable_clk(dev, "isfr");
1051 if (ret)
1052 return ret;
1053
1054 ret = meson_enable_clk(dev, "iahb");
1055 if (ret)
1056 return ret;
1057
1058 ret = meson_enable_clk(dev, "venci");
1059 if (ret)
1060 return ret;
1061
1062 dw_plat_data->regm = devm_regmap_init(dev, NULL, meson_dw_hdmi,
1063 &meson_dw_hdmi_regmap_config);
1064 if (IS_ERR(dw_plat_data->regm))
1065 return PTR_ERR(dw_plat_data->regm);
1066
1067 irq = platform_get_irq(pdev, 0);
1068 if (irq < 0)
1069 return irq;
1070
1071 ret = devm_request_threaded_irq(dev, irq, dw_hdmi_top_irq,
1072 dw_hdmi_top_thread_irq, IRQF_SHARED,
1073 "dw_hdmi_top_irq", meson_dw_hdmi);
1074 if (ret) {
1075 dev_err(dev, "Failed to request hdmi top irq\n");
1076 return ret;
1077 }
1078
1079 /* Encoder */
1080
1081 ret = drm_encoder_init(drm, encoder, &meson_venc_hdmi_encoder_funcs,
1082 DRM_MODE_ENCODER_TMDS, "meson_hdmi");
1083 if (ret) {
1084 dev_err(priv->dev, "Failed to init HDMI encoder\n");
1085 return ret;
1086 }
1087
1088 meson_dw_hdmi->bridge.funcs = &meson_venc_hdmi_encoder_bridge_funcs;
1089 drm_bridge_attach(encoder, &meson_dw_hdmi->bridge, NULL, 0);
1090
1091 encoder->possible_crtcs = BIT(0);
1092
1093 meson_dw_hdmi_init(meson_dw_hdmi);
1094
1095 DRM_DEBUG_DRIVER("encoder initialized\n");
1096
1097 /* Bridge / Connector */
1098
1099 dw_plat_data->priv_data = meson_dw_hdmi;
1100 dw_plat_data->mode_valid = dw_hdmi_mode_valid;
1101 dw_plat_data->phy_ops = &meson_dw_hdmi_phy_ops;
1102 dw_plat_data->phy_name = "meson_dw_hdmi_phy";
1103 dw_plat_data->phy_data = meson_dw_hdmi;
1104 dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709;
1105 dw_plat_data->ycbcr_420_allowed = true;
1106 dw_plat_data->disable_cec = true;
1107
1108 if (dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-gxl-dw-hdmi") ||
1109 dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-gxm-dw-hdmi") ||
1110 dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-g12a-dw-hdmi"))
1111 dw_plat_data->use_drm_infoframe = true;
1112
1113 platform_set_drvdata(pdev, meson_dw_hdmi);
1114
1115 meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev,
1116 &meson_dw_hdmi->dw_plat_data);
1117 if (IS_ERR(meson_dw_hdmi->hdmi))
1118 return PTR_ERR(meson_dw_hdmi->hdmi);
1119
1120 next_bridge = of_drm_find_bridge(pdev->dev.of_node);
1121 if (next_bridge)
1122 drm_bridge_attach(encoder, next_bridge,
1123 &meson_dw_hdmi->bridge, 0);
1124
1125 DRM_DEBUG_DRIVER("HDMI controller initialized\n");
1126
1127 return 0;
1128}
1129
1130static void meson_dw_hdmi_unbind(struct device *dev, struct device *master,
1131 void *data)
1132{
1133 struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev);
1134
1135 dw_hdmi_unbind(meson_dw_hdmi->hdmi);
1136}
1137
1138static const struct component_ops meson_dw_hdmi_ops = {
1139 .bind = meson_dw_hdmi_bind,
1140 .unbind = meson_dw_hdmi_unbind,
1141};
1142
1143static int __maybe_unused meson_dw_hdmi_pm_suspend(struct device *dev)
1144{
1145 struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev);
1146
1147 if (!meson_dw_hdmi)
1148 return 0;
1149
1150 /* Reset TOP */
1151 meson_dw_hdmi->data->top_write(meson_dw_hdmi,
1152 HDMITX_TOP_SW_RESET, 0);
1153
1154 return 0;
1155}
1156
1157static int __maybe_unused meson_dw_hdmi_pm_resume(struct device *dev)
1158{
1159 struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev);
1160
1161 if (!meson_dw_hdmi)
1162 return 0;
1163
1164 meson_dw_hdmi_init(meson_dw_hdmi);
1165
1166 dw_hdmi_resume(meson_dw_hdmi->hdmi);
1167
1168 return 0;
1169}
1170
1171static int meson_dw_hdmi_probe(struct platform_device *pdev)
1172{
1173 return component_add(&pdev->dev, &meson_dw_hdmi_ops);
1174}
1175
1176static int meson_dw_hdmi_remove(struct platform_device *pdev)
1177{
1178 component_del(&pdev->dev, &meson_dw_hdmi_ops);
1179
1180 return 0;
1181}
1182
1183static const struct dev_pm_ops meson_dw_hdmi_pm_ops = {
1184 SET_SYSTEM_SLEEP_PM_OPS(meson_dw_hdmi_pm_suspend,
1185 meson_dw_hdmi_pm_resume)
1186};
1187
1188static const struct of_device_id meson_dw_hdmi_of_table[] = {
1189 { .compatible = "amlogic,meson-gxbb-dw-hdmi",
1190 .data = &meson_dw_hdmi_gx_data },
1191 { .compatible = "amlogic,meson-gxl-dw-hdmi",
1192 .data = &meson_dw_hdmi_gx_data },
1193 { .compatible = "amlogic,meson-gxm-dw-hdmi",
1194 .data = &meson_dw_hdmi_gx_data },
1195 { .compatible = "amlogic,meson-g12a-dw-hdmi",
1196 .data = &meson_dw_hdmi_g12a_data },
1197 { }
1198};
1199MODULE_DEVICE_TABLE(of, meson_dw_hdmi_of_table);
1200
1201static struct platform_driver meson_dw_hdmi_platform_driver = {
1202 .probe = meson_dw_hdmi_probe,
1203 .remove = meson_dw_hdmi_remove,
1204 .driver = {
1205 .name = DRIVER_NAME,
1206 .of_match_table = meson_dw_hdmi_of_table,
1207 .pm = &meson_dw_hdmi_pm_ops,
1208 },
1209};
1210module_platform_driver(meson_dw_hdmi_platform_driver);
1211
1212MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
1213MODULE_DESCRIPTION(DRIVER_DESC);
1214MODULE_LICENSE("GPL");