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2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/drivers/gpu/drm/mediatek/mtk_hdmi.c
....@@ -1,21 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Copyright (c) 2014 MediaTek Inc.
34  * Author: Jie Qiu <jie.qiu@mediatek.com>
4
- *
5
- * This program is free software; you can redistribute it and/or modify
6
- * it under the terms of the GNU General Public License version 2 as
7
- * published by the Free Software Foundation.
8
- *
9
- * This program is distributed in the hope that it will be useful,
10
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
11
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12
- * GNU General Public License for more details.
135  */
14
-#include <drm/drmP.h>
15
-#include <drm/drm_atomic_helper.h>
16
-#include <drm/drm_crtc.h>
17
-#include <drm/drm_crtc_helper.h>
18
-#include <drm/drm_edid.h>
6
+
197 #include <linux/arm-smccc.h>
208 #include <linux/clk.h>
219 #include <linux/delay.h>
....@@ -24,6 +12,8 @@
2412 #include <linux/io.h>
2513 #include <linux/kernel.h>
2614 #include <linux/mfd/syscon.h>
15
+#include <linux/module.h>
16
+#include <linux/mutex.h>
2717 #include <linux/of_platform.h>
2818 #include <linux/of.h>
2919 #include <linux/of_gpio.h>
....@@ -31,7 +21,16 @@
3121 #include <linux/phy/phy.h>
3222 #include <linux/platform_device.h>
3323 #include <linux/regmap.h>
24
+
3425 #include <sound/hdmi-codec.h>
26
+
27
+#include <drm/drm_atomic_helper.h>
28
+#include <drm/drm_bridge.h>
29
+#include <drm/drm_crtc.h>
30
+#include <drm/drm_edid.h>
31
+#include <drm/drm_print.h>
32
+#include <drm/drm_probe_helper.h>
33
+
3534 #include "mtk_cec.h"
3635 #include "mtk_hdmi.h"
3736 #include "mtk_hdmi_regs.h"
....@@ -147,11 +146,16 @@
147146 	struct hdmi_codec_params codec_params;
148147 };
149148 
149
+struct mtk_hdmi_conf {
150
+	bool tz_disabled;
151
+};
152
+
150153 struct mtk_hdmi {
151154 	struct drm_bridge bridge;
152155 	struct drm_bridge *next_bridge;
153156 	struct drm_connector conn;
154157 	struct device *dev;
158
+	const struct mtk_hdmi_conf *conf;
155159 	struct phy *phy;
156160 	struct device *cec_dev;
157161 	struct i2c_adapter *ddc_adpt;
....@@ -172,6 +176,9 @@
172176 	bool audio_enable;
173177 	bool powered;
174178 	bool enabled;
179
+	hdmi_codec_plugged_cb plugged_cb;
180
+	struct device *codec_dev;
181
+	struct mutex update_plugged_status_lock;
175182 };
176183 
177184 static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
....@@ -240,8 +247,13 @@
240247 	 * The ARM trusted firmware provides an API for the HDMI driver to set
241248 	 * this control bit to enable HDMI output in supervisor mode.
242249 	 */
243
-	arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 0x80000000,
244
-		      0, 0, 0, 0, 0, &res);
250
+	if (hdmi->conf && hdmi->conf->tz_disabled)
251
+		regmap_update_bits(hdmi->sys_regmap,
252
+				   hdmi->sys_offset + HDMI_SYS_CFG20,
253
+				   0x80008005, enable ? 0x80000005 : 0x8000);
254
+	else
255
+		arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904,
256
+			      0x80000000, 0, 0, 0, 0, 0, &res);
245257 
246258 	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
247259 			   HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
....@@ -304,14 +316,10 @@
304316 	u8 checksum;
305317 	int ctrl_frame_en = 0;
306318 
307
-	frame_type = *buffer;
308
-	buffer += 1;
309
-	frame_ver = *buffer;
310
-	buffer += 1;
311
-	frame_len = *buffer;
312
-	buffer += 1;
313
-	checksum = *buffer;
314
-	buffer += 1;
319
+	frame_type = *buffer++;
320
+	frame_ver = *buffer++;
321
+	frame_len = *buffer++;
322
+	checksum = *buffer++;
315323 	frame_data = buffer;
316324 
317325 	dev_dbg(hdmi->dev,
....@@ -335,6 +343,9 @@
335343 		ctrl_frame_en = VS_EN;
336344 		ctrl_reg = GRL_ACP_ISRC_CTRL;
337345 		break;
346
+	default:
347
+		dev_err(hdmi->dev, "Unknown infoframe type %d\n", frame_type);
348
+		return;
338349 	}
339350 	mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en);
340351 	mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type);
....@@ -972,10 +983,11 @@
972983 					struct drm_display_mode *mode)
973984 {
974985 	struct hdmi_avi_infoframe frame;
975
-	u8 buffer[17];
986
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
976987 	ssize_t err;
977988 
978
-	err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
989
+	err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
990
+						       &hdmi->conn, mode);
979991 	if (err < 0) {
980992 		dev_err(hdmi->dev,
981993 			"Failed to get AVI infoframe from mode: %zd\n", err);
....@@ -997,7 +1009,7 @@
9971009 					const char *product)
9981010 {
9991011 	struct hdmi_spd_infoframe frame;
1000
-	u8 buffer[29];
1012
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE];
10011013 	ssize_t err;
10021014 
10031015 	err = hdmi_spd_infoframe_init(&frame, vendor, product);
....@@ -1020,7 +1032,7 @@
10201032 static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
10211033 {
10221034 	struct hdmi_audio_infoframe frame;
1023
-	u8 buffer[14];
1035
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
10241036 	ssize_t err;
10251037 
10261038 	err = hdmi_audio_infoframe_init(&frame);
....@@ -1187,13 +1199,26 @@
11871199 	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
11881200 }
11891201 
1202
+static enum drm_connector_status
1203
+mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi)
1204
+{
1205
+	bool connected;
1206
+
1207
+	mutex_lock(&hdmi->update_plugged_status_lock);
1208
+	connected = mtk_cec_hpd_high(hdmi->cec_dev);
1209
+	if (hdmi->plugged_cb && hdmi->codec_dev)
1210
+		hdmi->plugged_cb(hdmi->codec_dev, connected);
1211
+	mutex_unlock(&hdmi->update_plugged_status_lock);
1212
+
1213
+	return connected ?
1214
+	       connector_status_connected : connector_status_disconnected;
1215
+}
1216
+
11901217 static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn,
11911218 						  bool force)
11921219 {
11931220 	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1194
-
1195
-	return mtk_cec_hpd_high(hdmi->cec_dev) ?
1196
-	       connector_status_connected : connector_status_disconnected;
1221
+	return mtk_hdmi_update_plugged_status(hdmi);
11971222 }
11981223 
11991224 static void hdmi_conn_destroy(struct drm_connector *conn)
....@@ -1231,17 +1256,19 @@
12311256 				    struct drm_display_mode *mode)
12321257 {
12331258 	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1259
+	struct drm_bridge *next_bridge;
12341260 
12351261 	dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
1236
-		mode->hdisplay, mode->vdisplay, mode->vrefresh,
1262
+		mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
12371263 		!!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000);
12381264 
1239
-	if (hdmi->bridge.next) {
1265
+	next_bridge = drm_bridge_get_next_bridge(&hdmi->bridge);
1266
+	if (next_bridge) {
12401267 		struct drm_display_mode adjusted_mode;
12411268 
12421269 		drm_mode_copy(&adjusted_mode, mode);
1243
-		if (!drm_bridge_mode_fixup(hdmi->bridge.next, mode,
1244
-					   &adjusted_mode))
1270
+		if (!drm_bridge_chain_mode_fixup(next_bridge, mode,
1271
+						 &adjusted_mode))
12451272 			return MODE_BAD;
12461273 	}
12471274 
....@@ -1288,14 +1315,21 @@
12881315  * Bridge callbacks
12891316  */
12901317 
1291
-static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge)
1318
+static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
1319
+				  enum drm_bridge_attach_flags flags)
12921320 {
12931321 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
12941322 	int ret;
12951323 
1296
-	ret = drm_connector_init(bridge->encoder->dev, &hdmi->conn,
1297
-				 &mtk_hdmi_connector_funcs,
1298
-				 DRM_MODE_CONNECTOR_HDMIA);
1324
+	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
1325
+		DRM_ERROR("Fix bridge driver to make connector optional!");
1326
+		return -EINVAL;
1327
+	}
1328
+
1329
+	ret = drm_connector_init_with_ddc(bridge->encoder->dev, &hdmi->conn,
1330
+					  &mtk_hdmi_connector_funcs,
1331
+					  DRM_MODE_CONNECTOR_HDMIA,
1332
+					  hdmi->ddc_adpt);
12991333 	if (ret) {
13001334 		dev_err(hdmi->dev, "Failed to initialize connector: %d\n", ret);
13011335 		return ret;
....@@ -1316,7 +1350,7 @@
13161350 
13171351 	if (hdmi->next_bridge) {
13181352 		ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
1319
-					bridge);
1353
+					bridge, flags);
13201354 		if (ret) {
13211355 			dev_err(hdmi->dev,
13221356 				"Failed to attach external bridge: %d\n", ret);
....@@ -1364,8 +1398,8 @@
13641398 }
13651399 
13661400 static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
1367
-				     struct drm_display_mode *mode,
1368
-				     struct drm_display_mode *adjusted_mode)
1401
+				const struct drm_display_mode *mode,
1402
+				const struct drm_display_mode *adjusted_mode)
13691403 {
13701404 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
13711405 
....@@ -1441,7 +1475,9 @@
14411475 
14421476 	ret = mtk_hdmi_get_all_clk(hdmi, np);
14431477 	if (ret) {
1444
-		dev_err(dev, "Failed to get clocks: %d\n", ret);
1478
+		if (ret != -EPROBE_DEFER)
1479
+			dev_err(dev, "Failed to get clocks: %d\n", ret);
1480
+
14451481 		return ret;
14461482 	}
14471483 
....@@ -1586,6 +1622,11 @@
15861622 		hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
15871623 		hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
15881624 		break;
1625
+	case HDMI_SPDIF:
1626
+		hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1627
+		hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1628
+		hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
1629
+		break;
15891630 	default:
15901631 		dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
15911632 			daifmt->fmt);
....@@ -1604,8 +1645,6 @@
16041645 {
16051646 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
16061647 
1607
-	dev_dbg(dev, "%s\n", __func__);
1608
-
16091648 	mtk_hdmi_audio_enable(hdmi);
16101649 
16111650 	return 0;
....@@ -1615,17 +1654,14 @@
16151654 {
16161655 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
16171656 
1618
-	dev_dbg(dev, "%s\n", __func__);
1619
-
16201657 	mtk_hdmi_audio_disable(hdmi);
16211658 }
16221659 
16231660 static int
1624
-mtk_hdmi_audio_digital_mute(struct device *dev, void *data, bool enable)
1661
+mtk_hdmi_audio_mute(struct device *dev, void *data,
1662
+		    bool enable, int direction)
16251663 {
16261664 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1627
-
1628
-	dev_dbg(dev, "%s(%d)\n", __func__, enable);
16291665 
16301666 	if (enable)
16311667 		mtk_hdmi_hw_aud_mute(hdmi);
....@@ -1639,9 +1675,23 @@
16391675 {
16401676 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
16411677 
1642
-	dev_dbg(dev, "%s\n", __func__);
1643
-
16441678 	memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len));
1679
+
1680
+	return 0;
1681
+}
1682
+
1683
+static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
1684
+					  hdmi_codec_plugged_cb fn,
1685
+					  struct device *codec_dev)
1686
+{
1687
+	struct mtk_hdmi *hdmi = data;
1688
+
1689
+	mutex_lock(&hdmi->update_plugged_status_lock);
1690
+	hdmi->plugged_cb = fn;
1691
+	hdmi->codec_dev = codec_dev;
1692
+	mutex_unlock(&hdmi->update_plugged_status_lock);
1693
+
1694
+	mtk_hdmi_update_plugged_status(hdmi);
16451695 
16461696 	return 0;
16471697 }
....@@ -1650,16 +1700,20 @@
16501700 	.hw_params = mtk_hdmi_audio_hw_params,
16511701 	.audio_startup = mtk_hdmi_audio_startup,
16521702 	.audio_shutdown = mtk_hdmi_audio_shutdown,
1653
-	.digital_mute = mtk_hdmi_audio_digital_mute,
1703
+	.mute_stream = mtk_hdmi_audio_mute,
16541704 	.get_eld = mtk_hdmi_audio_get_eld,
1705
+	.hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb,
1706
+	.no_capture_mute = 1,
16551707 };
16561708 
1657
-static void mtk_hdmi_register_audio_driver(struct device *dev)
1709
+static int mtk_hdmi_register_audio_driver(struct device *dev)
16581710 {
1711
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
16591712 	struct hdmi_codec_pdata codec_data = {
16601713 		.ops = &mtk_hdmi_audio_codec_ops,
16611714 		.max_i2s_channels = 2,
16621715 		.i2s = 1,
1716
+		.data = hdmi,
16631717 	};
16641718 	struct platform_device *pdev;
16651719 
....@@ -1667,9 +1721,10 @@
16671721 					     PLATFORM_DEVID_AUTO, &codec_data,
16681722 					     sizeof(codec_data));
16691723 	if (IS_ERR(pdev))
1670
-		return;
1724
+		return PTR_ERR(pdev);
16711725 
16721726 	DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
1727
+	return 0;
16731728 }
16741729 
16751730 static int mtk_drm_hdmi_probe(struct platform_device *pdev)
....@@ -1683,6 +1738,7 @@
16831738 		return -ENOMEM;
16841739 
16851740 	hdmi->dev = dev;
1741
+	hdmi->conf = of_device_get_match_data(dev);
16861742 
16871743 	ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
16881744 	if (ret)
....@@ -1695,6 +1751,7 @@
16951751 		return ret;
16961752 	}
16971753 
1754
+	mutex_init(&hdmi->update_plugged_status_lock);
16981755 	platform_set_drvdata(pdev, hdmi);
16991756 
17001757 	ret = mtk_hdmi_output_init(hdmi);
....@@ -1703,7 +1760,11 @@
17031760 		return ret;
17041761 	}
17051762 
1706
-	mtk_hdmi_register_audio_driver(dev);
1763
+	ret = mtk_hdmi_register_audio_driver(dev);
1764
+	if (ret) {
1765
+		dev_err(dev, "Failed to register audio driver: %d\n", ret);
1766
+		return ret;
1767
+	}
17071768 
17081769 	hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
17091770 	hdmi->bridge.of_node = pdev->dev.of_node;
....@@ -1715,7 +1776,6 @@
17151776 		goto err_bridge_remove;
17161777 	}
17171778 
1718
-	dev_dbg(dev, "mediatek hdmi probe success\n");
17191779 	return 0;
17201780 
17211781 err_bridge_remove:
....@@ -1738,7 +1798,7 @@
17381798 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
17391799 
17401800 	mtk_hdmi_clk_disable_audio(hdmi);
1741
-	dev_dbg(dev, "hdmi suspend success!\n");
1801
+
17421802 	return 0;
17431803 }
17441804 
....@@ -1753,15 +1813,22 @@
17531813 		return ret;
17541814 	}
17551815 
1756
-	dev_dbg(dev, "hdmi resume success!\n");
17571816 	return 0;
17581817 }
17591818 #endif
17601819 static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops,
17611820 			 mtk_hdmi_suspend, mtk_hdmi_resume);
17621821 
1822
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
1823
+	.tz_disabled = true,
1824
+};
1825
+
17631826 static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
1764
-	{ .compatible = "mediatek,mt8173-hdmi", },
1827
+	{ .compatible = "mediatek,mt2701-hdmi",
1828
+	  .data = &mtk_hdmi_conf_mt2701,
1829
+	},
1830
+	{ .compatible = "mediatek,mt8173-hdmi",
1831
+	},
17651832 	{}
17661833 };
17671834 
....@@ -1776,7 +1843,6 @@
17761843 };
17771844 
17781845 static struct platform_driver * const mtk_hdmi_drivers[] = {
1779
-	&mtk_hdmi_phy_driver,
17801846 	&mtk_hdmi_ddc_driver,
17811847 	&mtk_cec_driver,
17821848 	&mtk_hdmi_driver,