drm2/radeon/radeon_i2c.c

92 /* bit banging i2c */
96 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
97 	struct radeon_device *rdev = i2c->dev->dev_private;
98 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
101 	/* RV410 appears to have a bug where the hw i2c in reset
102 	 * holds the i2c port in a bad state - switch hw i2c away before
164 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
165 	struct radeon_device *rdev = i2c->dev->dev_private;
166 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
181 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
182 	struct radeon_device *rdev = i2c->dev->dev_private;
183 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
196 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
197 	struct radeon_device *rdev = i2c->dev->dev_private;
198 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
210 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
211 	struct radeon_device *rdev = i2c->dev->dev_private;
212 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
223 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
224 	struct radeon_device *rdev = i2c->dev->dev_private;
225 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
244 	struct radeon_i2c_chan *i2c;
247 	i2c = device_get_softc(dev);
248 	device_set_desc(dev, i2c->name);
310 /* hw i2c */
392 		DRM_ERROR("i2c: unhandled radeon chip\n");
399 /* hw i2c engine for r1xx-4xx hardware
402 static int r100_hw_i2c_xfer(struct radeon_i2c_chan *i2c,
405 	struct radeon_device *rdev = i2c->dev->dev_private;
406 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
451 				DRM_ERROR("gpio not supported with hw i2c\n");
466 				DRM_ERROR("gpio not supported with hw i2c\n");
485 				DRM_ERROR("gpio not supported with hw i2c\n");
501 				DRM_ERROR("gpio not supported with hw i2c\n");
525 				DRM_ERROR("gpio not supported with hw i2c\n");
561 				DRM_DEBUG("i2c write error 0x%08x\n", tmp);
593 						DRM_DEBUG("i2c read error 0x%08x\n", tmp);
621 						DRM_DEBUG("i2c write error 0x%08x\n", tmp);
651 /* hw i2c engine for r5xx hardware
654 static int r500_hw_i2c_xfer(struct radeon_i2c_chan *i2c,
657 	struct radeon_device *rdev = i2c->dev->dev_private;
658 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
718 		DRM_ERROR("failed to get i2c bus\n");
735 		DRM_ERROR("gpio not supported with hw i2c\n");
768 				DRM_DEBUG("i2c write error 0x%08x\n", tmp);
810 						DRM_DEBUG("i2c read error 0x%08x\n", tmp);
853 						DRM_DEBUG("i2c write error 0x%08x\n", tmp);
889 	struct radeon_i2c_chan *i2c = device_get_softc(dev);
890 	struct radeon_device *rdev = i2c->dev->dev_private;
891 	struct radeon_i2c_bus_rec *rec = &i2c->rec;
913 		ret = r100_hw_i2c_xfer(i2c, msgs, num);
918 		/* XXX fill in hw i2c implementation */
927 			ret = r100_hw_i2c_xfer(i2c, msgs, num);
929 			ret = r500_hw_i2c_xfer(i2c, msgs, num);
935 		/* XXX fill in hw i2c implementation */
945 		/* XXX fill in hw i2c implementation */
952 		/* XXX fill in hw i2c implementation */
955 		DRM_ERROR("i2c: unhandled radeon chip\n");
973 	struct radeon_i2c_chan *i2c;
976 	i2c = device_get_softc(dev);
977 	device_set_desc(dev, i2c->name);
1037 	struct radeon_i2c_chan *i2c;
1045 	i2c = malloc(sizeof(struct radeon_i2c_chan),
1047 	if (i2c == NULL)
1056 	i2c->rec = *rec;
1057 	i2c->dev = dev;
1063 		/* set the radeon hw i2c adapter */
1064 		snprintf(i2c->name, sizeof(i2c->name),
1065 			 "Radeon i2c hw bus %s", name);
1068 			DRM_ERROR("Failed to create bridge for hw i2c %s\n",
1073 		device_set_softc(iicbus_dev, i2c);
1077 			DRM_ERROR("Attach failed for bridge for hw i2c %s\n",
1083 		i2c->adapter = device_find_child(iicbus_dev, "iicbus", -1);
1084 		if (i2c->adapter == NULL) {
1085 			DRM_ERROR("hw i2c bridge doesn't have iicbus child\n");
1092 		/* hw i2c using atom */
1093 		snprintf(i2c->name, sizeof(i2c->name),
1094 			 "Radeon i2c hw bus %s", name);
1097 			DRM_ERROR("Failed to create bridge for hw i2c %s\n",
1102 		device_set_softc(iicbus_dev, i2c);
1106 			DRM_ERROR("Attach failed for bridge for hw i2c %s\n",
1112 		i2c->adapter = device_find_child(iicbus_dev, "iicbus", -1);
1113 		if (i2c->adapter == NULL) {
1114 			DRM_ERROR("hw i2c bridge doesn't have iicbus child\n");
1122 		snprintf(i2c->name, sizeof(i2c->name),
1123 			 "Radeon i2c bit bus %s", name);
1126 			DRM_ERROR("Failed to create bridge for bb i2c %s\n",
1131 		device_set_softc(iicbus_dev, i2c);
1135 			DRM_ERROR("Attach failed for bridge for bb i2c %s\n",
1143 			DRM_ERROR("bb i2c bridge doesn't have iicbb child\n");
1148 		i2c->adapter = device_find_child(iicbb_dev, "iicbus", -1);
1149 		if (i2c->adapter == NULL) {
1157 	i2c->iic_bus = iicbus_dev;
1161 	return i2c;
1164 	free(i2c, DRM_MEM_DRIVER);
1173 	struct radeon_i2c_chan *i2c;
1176 	i2c = malloc(sizeof(struct radeon_i2c_chan),
1178 	if (i2c == NULL)
1181 	i2c->rec = *rec;
1182 	i2c->dev = dev;
1183 	snprintf(i2c->name, sizeof(i2c->name),
1185 	ret = iic_dp_aux_add_bus(dev->dev, i2c->name,
1186 	    radeon_dp_i2c_aux_ch, i2c, &i2c->iic_bus,
1187 	    &i2c->adapter);
1189 		DRM_INFO("Failed to register i2c %s\n", name);
1193 	return i2c;
1195 	free(i2c, DRM_MEM_DRIVER);
1200 void radeon_i2c_destroy(struct radeon_i2c_chan *i2c)
1202 	if (!i2c)
1204 	if (i2c->iic_bus != NULL) {
1208 		ret = device_delete_child(i2c->dev->dev, i2c->iic_bus);
1211 		    i2c->name, ret));
1213 	free(i2c, DRM_MEM_DRIVER);
1303 		DRM_DEBUG("i2c 0x%02x 0x%02x read failed\n",
1325 		DRM_DEBUG("i2c 0x%02x 0x%02x write failed\n",