change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/gpu/drm/bridge/lontium-lt9611.c
..
..
@@ -11,13 +11,14 @@
11
11
 #include <linux/platform_device.h>
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 #include <linux/regmap.h>
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 #include <linux/regulator/consumer.h>
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-#include <drm/drm_crtc_helper.h>
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+
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 #include <sound/hdmi-codec.h>
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 #include <drm/drm_atomic_helper.h>
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 #include <drm/drm_bridge.h>
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 #include <drm/drm_mipi_dsi.h>
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 #include <drm/drm_print.h>
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+#include <drm/drm_probe_helper.h>
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22
 
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 #define EDID_SEG_SIZE	256
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 #define EDID_LEN	32
..
..
@@ -46,6 +47,7 @@
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 	struct gpio_desc *enable_gpio;
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48
 
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 	bool power_on;
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+	bool sleep;
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51
 
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 	struct regulator_bulk_data supplies[2];
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53
 
..
..
@@ -183,12 +185,14 @@
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185
 
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 	regmap_write(lt9611->regmap, 0x8319, (u8)(hfront_porch % 256));
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187
 
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-	regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256));
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+	regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256) |
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+						((hfront_porch / 256) << 4));
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 	regmap_write(lt9611->regmap, 0x831b, (u8)(hsync_porch % 256));
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 }
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192
 
190
-static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode)
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+static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode, unsigned int postdiv)
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 {
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+	unsigned int pcr_m = mode->clock * 5 * postdiv / 27000;
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 	const struct reg_sequence reg_cfg[] = {
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 		{ 0x830b, 0x01 },
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 		{ 0x830c, 0x10 },
..
..
@@ -203,7 +207,6 @@
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207
 
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 		/* stage 2 */
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 		{ 0x834a, 0x40 },
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-		{ 0x831d, 0x10 },
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210
 
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 		/* MK limit */
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 		{ 0x832d, 0x38 },
..
..
@@ -218,30 +221,28 @@
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 		{ 0x8325, 0x00 },
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 		{ 0x832a, 0x01 },
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 		{ 0x834a, 0x10 },
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-		{ 0x831d, 0x10 },
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-		{ 0x8326, 0x37 },
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 	};
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+	u8 pol = 0x10;
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226
 
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-	regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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+	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
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+		pol |= 0x2;
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+	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
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+		pol |= 0x1;
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+	regmap_write(lt9611->regmap, 0x831d, pol);
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232
 
227
-	switch (mode->hdisplay) {
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-	case 640:
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-		regmap_write(lt9611->regmap, 0x8326, 0x14);
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-		break;
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-	case 1920:
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-		regmap_write(lt9611->regmap, 0x8326, 0x37);
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-		break;
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-	case 3840:
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+	if (mode->hdisplay == 3840)
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234
 		regmap_multi_reg_write(lt9611->regmap, reg_cfg2, ARRAY_SIZE(reg_cfg2));
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-		break;
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-	}
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+	else
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+		regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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+
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+	regmap_write(lt9611->regmap, 0x8326, pcr_m);
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239
 
239
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 	/* pcr rst */
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 	regmap_write(lt9611->regmap, 0x8011, 0x5a);
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 	regmap_write(lt9611->regmap, 0x8011, 0xfa);
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 }
243
244
 
244
-static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode)
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+static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode, unsigned int *postdiv)
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246
 {
246
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 	unsigned int pclk = mode->clock;
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248
 	const struct reg_sequence reg_cfg[] = {
..
..
@@ -255,16 +256,21 @@
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 		{ 0x8126, 0x55 },
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 		{ 0x8127, 0x66 },
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 		{ 0x8128, 0x88 },
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+		{ 0x812a, 0x20 },
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 	};
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261
 
260
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 	regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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263
 
262
-	if (pclk > 150000)
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+	if (pclk > 150000) {
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 		regmap_write(lt9611->regmap, 0x812d, 0x88);
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-	else if (pclk > 70000)
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+		*postdiv = 1;
267
+	} else if (pclk > 70000) {
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268
 		regmap_write(lt9611->regmap, 0x812d, 0x99);
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-	else
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+		*postdiv = 2;
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+	} else {
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 		regmap_write(lt9611->regmap, 0x812d, 0xaa);
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+		*postdiv = 4;
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+	}
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274
 
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 	/*
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 	 * first divide pclk by 2 first
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@@ -435,6 +441,25 @@
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 	regmap_write(lt9611->regmap, 0x8203, val);
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 	regmap_write(lt9611->regmap, 0x8207, 0xff); /* clear */
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 	regmap_write(lt9611->regmap, 0x8207, 0x3f);
444
+}
445
+
446
+static void lt9611_sleep_setup(struct lt9611 *lt9611)
447
+{
448
+	const struct reg_sequence sleep_setup[] = {
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+		{ 0x8024, 0x76 },
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+		{ 0x8023, 0x01 },
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+		{ 0x8157, 0x03 }, /* set addr pin as output */
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+		{ 0x8149, 0x0b },
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+
454
+		{ 0x8102, 0x48 }, /* MIPI Rx power down */
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+		{ 0x8123, 0x80 },
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+		{ 0x8130, 0x00 },
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+		{ 0x8011, 0x0a },
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+	};
459
+
460
+	regmap_multi_reg_write(lt9611->regmap,
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+			       sleep_setup, ARRAY_SIZE(sleep_setup));
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+	lt9611->sleep = true;
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463
 }
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464
 
440
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 static int lt9611_power_on(struct lt9611 *lt9611)
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@@ -735,7 +760,7 @@
735
760
 static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
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 						 struct device_node *dsi_node)
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762
 {
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-	const struct mipi_dsi_device_info info = { "lt9611", 0, NULL };
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+	const struct mipi_dsi_device_info info = { "lt9611", 0, lt9611->dev->of_node};
739
764
 	struct mipi_dsi_device *dsi;
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 	struct mipi_dsi_host *host;
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766
 	int ret;
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@@ -754,7 +779,8 @@
754
779
 
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 	dsi->lanes = 4;
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 	dsi->format = MIPI_DSI_FMT_RGB888;
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-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST;
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+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
783
+			  MIPI_DSI_MODE_VIDEO_HSE;
758
784
 
759
785
 	ret = mipi_dsi_attach(dsi);
760
786
 	if (ret < 0) {
..
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@@ -793,20 +819,28 @@
793
819
 
794
820
 	drm_connector_helper_add(&lt9611->connector,
795
821
 				 &lt9611_bridge_connector_helper_funcs);
796
-	drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);
797
822
 
798
823
 	if (!bridge->encoder) {
799
824
 		DRM_ERROR("Parent encoder object not found");
800
825
 		return -ENODEV;
801
826
 	}
802
827
 
828
+	drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);
829
+
803
830
 	return 0;
804
831
 }
805
832
 
806
-static int lt9611_bridge_attach(struct drm_bridge *bridge)
833
+static int lt9611_bridge_attach(struct drm_bridge *bridge,
834
+				enum drm_bridge_attach_flags flags)
807
835
 {
808
836
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
809
837
 	int ret;
838
+
839
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
840
+		ret = lt9611_connector_init(bridge, lt9611);
841
+		if (ret < 0)
842
+			return ret;
843
+	}
810
844
 
811
845
 	/* Attach primary DSI */
812
846
 	lt9611->dsi0 = lt9611_attach_dsi(lt9611, lt9611->dsi0_node);
..
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@@ -822,9 +856,7 @@
822
856
 		}
823
857
 	}
824
858
 
825
-	ret = lt9611_connector_init(bridge, lt9611);
826
-
827
-	return ret;
859
+	return 0;
828
860
 
829
861
 err_unregister_dsi0:
830
862
 	lt9611_bridge_detach(bridge);
..
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@@ -835,45 +867,98 @@
835
867
 }
836
868
 
837
869
 static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge,
870
+						     const struct drm_display_info *info,
838
871
 						     const struct drm_display_mode *mode)
839
872
 {
840
873
 	struct lt9611_mode *lt9611_mode = lt9611_find_mode(mode);
874
+	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
841
875
 
842
-	return lt9611_mode ? MODE_OK : MODE_BAD;
876
+	if (!lt9611_mode)
877
+		return MODE_BAD;
878
+	else if (lt9611_mode->intfs > 1 && !lt9611->dsi1)
879
+		return MODE_PANEL;
880
+	else
881
+		return MODE_OK;
843
882
 }
844
883
 
845
884
 static void lt9611_bridge_pre_enable(struct drm_bridge *bridge)
846
885
 {
847
886
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
887
+	static const struct reg_sequence reg_cfg[] = {
888
+		{ 0x8102, 0x12 },
889
+		{ 0x8123, 0x40 },
890
+		{ 0x8130, 0xea },
891
+		{ 0x8011, 0xfa },
892
+	};
848
893
 
849
-	lt9611_reset(lt9611);
850
-	regmap_write(lt9611->regmap, 0x80ee, 0x01);
851
-	lt9611_enable_hpd_interrupts(lt9611);
894
+	if (!lt9611->sleep)
895
+		return;
852
896
 
897
+	regmap_multi_reg_write(lt9611->regmap,
898
+			       reg_cfg, ARRAY_SIZE(reg_cfg));
899
+
900
+	lt9611->sleep = false;
853
901
 }
854
902
 
855
903
 static void lt9611_bridge_post_disable(struct drm_bridge *bridge)
856
904
 {
905
+	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
906
+
907
+	lt9611_sleep_setup(lt9611);
857
908
 }
858
909
 
859
910
 static void lt9611_bridge_mode_set(struct drm_bridge *bridge,
860
-				   struct drm_display_mode *mode,
861
-				   struct drm_display_mode *adj_mode)
911
+				   const struct drm_display_mode *mode,
912
+				   const struct drm_display_mode *adj_mode)
862
913
 {
863
914
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
864
915
 	struct hdmi_avi_infoframe avi_frame;
916
+	unsigned int postdiv;
865
917
 	int ret;
866
918
 
867
919
 	lt9611_bridge_pre_enable(bridge);
868
920
 
869
921
 	lt9611_mipi_input_digital(lt9611, mode);
870
-	lt9611_pll_setup(lt9611, mode);
922
+	lt9611_pll_setup(lt9611, mode, &postdiv);
871
923
 	lt9611_mipi_video_setup(lt9611, mode);
872
-	lt9611_pcr_setup(lt9611, mode);
924
+	lt9611_pcr_setup(lt9611, mode, postdiv);
873
925
 
874
-	ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame, mode, false);
926
+	ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame,
927
+						       &lt9611->connector,
928
+						       mode);
875
929
 	if (!ret)
876
930
 		lt9611->vic = avi_frame.video_code;
931
+}
932
+
933
+static enum drm_connector_status lt9611_bridge_detect(struct drm_bridge *bridge)
934
+{
935
+	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
936
+	unsigned int reg_val = 0;
937
+	int connected;
938
+
939
+	regmap_read(lt9611->regmap, 0x825e, &reg_val);
940
+	connected  = reg_val & BIT(2);
941
+
942
+	lt9611->status = connected ?  connector_status_connected :
943
+				connector_status_disconnected;
944
+
945
+	return lt9611->status;
946
+}
947
+
948
+static struct edid *lt9611_bridge_get_edid(struct drm_bridge *bridge,
949
+					   struct drm_connector *connector)
950
+{
951
+	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
952
+
953
+	lt9611_power_on(lt9611);
954
+	return drm_do_get_edid(connector, lt9611_get_edid_block, lt9611);
955
+}
956
+
957
+static void lt9611_bridge_hpd_enable(struct drm_bridge *bridge)
958
+{
959
+	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
960
+
961
+	lt9611_enable_hpd_interrupts(lt9611);
877
962
 }
878
963
 
879
964
 static const struct drm_bridge_funcs lt9611_bridge_funcs = {
..
..
@@ -884,6 +969,9 @@
884
969
 	.disable = lt9611_bridge_disable,
885
970
 	.post_disable = lt9611_bridge_post_disable,
886
971
 	.mode_set = lt9611_bridge_mode_set,
972
+	.detect = lt9611_bridge_detect,
973
+	.get_edid = lt9611_bridge_get_edid,
974
+	.hpd_enable = lt9611_bridge_hpd_enable,
887
975
 };
888
976
 
889
977
 static int lt9611_parse_dt(struct device *dev,
..
..
@@ -1050,6 +1138,7 @@
1050
1138
 
1051
1139
 	lt9611->dev = &client->dev;
1052
1140
 	lt9611->client = client;
1141
+	lt9611->sleep = false;
1053
1142
 
1054
1143
 	lt9611->regmap = devm_regmap_init_i2c(client, &lt9611_regmap_config);
1055
1144
 	if (IS_ERR(lt9611->regmap)) {
..
..
@@ -1087,8 +1176,7 @@
1087
1176
 
1088
1177
 	ret = devm_request_threaded_irq(dev, client->irq, NULL,
1089
1178
 					lt9611_irq_thread_handler,
1090
-					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
1091
-					"lt9611", lt9611);
1179
+					IRQF_ONESHOT, "lt9611", lt9611);
1092
1180
 	if (ret) {
1093
1181
 		dev_err(dev, "failed to request irq\n");
1094
1182
 		goto err_disable_regulators;
..
..
@@ -1098,6 +1186,9 @@
1098
1186
 
1099
1187
 	lt9611->bridge.funcs = &lt9611_bridge_funcs;
1100
1188
 	lt9611->bridge.of_node = client->dev.of_node;
1189
+	lt9611->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
1190
+			     DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES;
1191
+	lt9611->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1101
1192
 
1102
1193
 	drm_bridge_add(&lt9611->bridge);
1103
1194