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| 2 | |
| 3 | * Copyright (C) 2015 Texas Instruments
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| 4 | * Author: Jyri Sarha <[email protected]>
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| 5 |
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| 6 |
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| 7 | #include <linux/of_graph.h>
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| 8 |
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| 9 | #include <drm/drm_atomic_helper.h>
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| 10 | #include <drm/drm_bridge.h>
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| 11 | #include <drm/drm_bridge_connector.h>
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| 12 | #include <drm/drm_of.h>
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| 13 | #include <drm/drm_simple_kms_helper.h>
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| 14 |
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| 15 | #include "tilcdc_drv.h"
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| 16 | #include "tilcdc_encoder.h"
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| 17 |
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| 18 | static
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| 19 | int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge)
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| 20 | {
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| 21 | struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
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| 22 | struct drm_connector *connector;
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| 23 | int ret;
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| 24 |
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| 25 | priv->encoder->base.possible_crtcs = BIT(0);
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| 26 |
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| 27 | ret = drm_bridge_attach(&priv->encoder->base, bridge, NULL,
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| 28 | DRM_BRIDGE_ATTACH_NO_CONNECTOR);
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| 29 | if (ret)
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| 30 | return ret;
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| 31 |
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| 32 | connector = drm_bridge_connector_init(ddev, &priv->encoder->base);
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| 33 | if (IS_ERR(connector)) {
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| 34 | drm_err(ddev, "bridge_connector create failed\n");
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| 35 | return PTR_ERR(connector);
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| 36 | }
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| 37 |
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| 38 | priv->connector = connector;
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| 39 | return 0;
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| 40 | }
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| 41 |
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| 42 | int tilcdc_encoder_create(struct drm_device *ddev)
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| 43 | {
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| 44 | struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
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| 45 | struct tilcdc_encoder *encoder;
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| 46 | struct drm_bridge *bridge;
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| 47 |
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| 48 | bridge = devm_drm_of_get_bridge(ddev->dev, ddev->dev->of_node, 0, 0);
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| 49 | if (PTR_ERR(bridge) == -ENODEV)
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| 50 | return 0;
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| 51 | else if (IS_ERR(bridge))
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| 52 | return PTR_ERR(bridge);
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| 53 |
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| 54 | encoder = drmm_simple_encoder_alloc(ddev, struct tilcdc_encoder,
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| 55 | base, DRM_MODE_ENCODER_NONE);
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| 56 | if (IS_ERR(encoder)) {
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| 57 | drm_err(ddev, "drm_encoder_init() failed %pe\n", encoder);
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| 58 | return PTR_ERR(encoder);
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| 59 | }
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| 60 | priv->encoder = encoder;
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| 61 |
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| 62 | return tilcdc_attach_bridge(ddev, bridge);
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| 63 | }
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