Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #include "dsi.h" |
| 15 | |
| 16 | struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi) |
| 17 | { |
| 18 | if (!msm_dsi || !msm_dsi->panel) |
| 19 | return NULL; |
| 20 | |
| 21 | return (msm_dsi->panel_flags & MIPI_DSI_MODE_VIDEO) ? |
| 22 | msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID] : |
| 23 | msm_dsi->encoders[MSM_DSI_CMD_ENCODER_ID]; |
| 24 | } |
| 25 | |
| 26 | static void dsi_destroy(struct msm_dsi *msm_dsi) |
| 27 | { |
| 28 | if (!msm_dsi) |
| 29 | return; |
| 30 | |
| 31 | msm_dsi_manager_unregister(msm_dsi); |
| 32 | if (msm_dsi->host) { |
| 33 | msm_dsi_host_destroy(msm_dsi->host); |
| 34 | msm_dsi->host = NULL; |
| 35 | } |
| 36 | |
| 37 | platform_set_drvdata(msm_dsi->pdev, NULL); |
| 38 | } |
| 39 | |
| 40 | static struct msm_dsi *dsi_init(struct platform_device *pdev) |
| 41 | { |
| 42 | struct msm_dsi *msm_dsi = NULL; |
| 43 | int ret; |
| 44 | |
| 45 | if (!pdev) { |
| 46 | dev_err(&pdev->dev, "no dsi device\n"); |
| 47 | ret = -ENXIO; |
| 48 | goto fail; |
| 49 | } |
| 50 | |
| 51 | msm_dsi = devm_kzalloc(&pdev->dev, sizeof(*msm_dsi), GFP_KERNEL); |
| 52 | if (!msm_dsi) { |
| 53 | ret = -ENOMEM; |
| 54 | goto fail; |
| 55 | } |
| 56 | DBG("dsi probed=%p", msm_dsi); |
| 57 | |
| 58 | msm_dsi->pdev = pdev; |
| 59 | platform_set_drvdata(pdev, msm_dsi); |
| 60 | |
| 61 | /* Init dsi host */ |
| 62 | ret = msm_dsi_host_init(msm_dsi); |
| 63 | if (ret) |
| 64 | goto fail; |
| 65 | |
| 66 | /* Register to dsi manager */ |
| 67 | ret = msm_dsi_manager_register(msm_dsi); |
| 68 | if (ret) |
| 69 | goto fail; |
| 70 | |
| 71 | return msm_dsi; |
| 72 | |
| 73 | fail: |
| 74 | if (msm_dsi) |
| 75 | dsi_destroy(msm_dsi); |
| 76 | |
| 77 | return ERR_PTR(ret); |
| 78 | } |
| 79 | |
| 80 | static int dsi_bind(struct device *dev, struct device *master, void *data) |
| 81 | { |
| 82 | struct drm_device *drm = dev_get_drvdata(master); |
| 83 | struct msm_drm_private *priv = drm->dev_private; |
| 84 | struct platform_device *pdev = to_platform_device(dev); |
| 85 | struct msm_dsi *msm_dsi; |
| 86 | |
| 87 | DBG(""); |
| 88 | msm_dsi = dsi_init(pdev); |
| 89 | if (IS_ERR(msm_dsi)) |
| 90 | return PTR_ERR(msm_dsi); |
| 91 | |
| 92 | priv->dsi[msm_dsi->id] = msm_dsi; |
| 93 | |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | static void dsi_unbind(struct device *dev, struct device *master, |
| 98 | void *data) |
| 99 | { |
| 100 | struct drm_device *drm = dev_get_drvdata(master); |
| 101 | struct msm_drm_private *priv = drm->dev_private; |
| 102 | struct msm_dsi *msm_dsi = dev_get_drvdata(dev); |
| 103 | int id = msm_dsi->id; |
| 104 | |
| 105 | if (priv->dsi[id]) { |
| 106 | dsi_destroy(msm_dsi); |
| 107 | priv->dsi[id] = NULL; |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | static const struct component_ops dsi_ops = { |
| 112 | .bind = dsi_bind, |
| 113 | .unbind = dsi_unbind, |
| 114 | }; |
| 115 | |
| 116 | static int dsi_dev_probe(struct platform_device *pdev) |
| 117 | { |
| 118 | return component_add(&pdev->dev, &dsi_ops); |
| 119 | } |
| 120 | |
| 121 | static int dsi_dev_remove(struct platform_device *pdev) |
| 122 | { |
| 123 | DBG(""); |
| 124 | component_del(&pdev->dev, &dsi_ops); |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | static const struct of_device_id dt_match[] = { |
| 129 | { .compatible = "qcom,mdss-dsi-ctrl" }, |
| 130 | {} |
| 131 | }; |
| 132 | |
| 133 | static struct platform_driver dsi_driver = { |
| 134 | .probe = dsi_dev_probe, |
| 135 | .remove = dsi_dev_remove, |
| 136 | .driver = { |
| 137 | .name = "msm_dsi", |
| 138 | .of_match_table = dt_match, |
| 139 | }, |
| 140 | }; |
| 141 | |
| 142 | void __init msm_dsi_register(void) |
| 143 | { |
| 144 | DBG(""); |
| 145 | platform_driver_register(&dsi_driver); |
| 146 | } |
| 147 | |
| 148 | void __exit msm_dsi_unregister(void) |
| 149 | { |
| 150 | DBG(""); |
| 151 | platform_driver_unregister(&dsi_driver); |
| 152 | } |
| 153 | |
| 154 | int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, |
| 155 | struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]) |
| 156 | { |
| 157 | struct msm_drm_private *priv = dev->dev_private; |
| 158 | int ret, i; |
| 159 | |
| 160 | if (WARN_ON(!encoders[MSM_DSI_VIDEO_ENCODER_ID] || |
| 161 | !encoders[MSM_DSI_CMD_ENCODER_ID])) |
| 162 | return -EINVAL; |
| 163 | |
| 164 | msm_dsi->dev = dev; |
| 165 | |
| 166 | ret = msm_dsi_host_modeset_init(msm_dsi->host, dev); |
| 167 | if (ret) { |
| 168 | dev_err(dev->dev, "failed to modeset init host: %d\n", ret); |
| 169 | goto fail; |
| 170 | } |
| 171 | |
| 172 | msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id); |
| 173 | if (IS_ERR(msm_dsi->bridge)) { |
| 174 | ret = PTR_ERR(msm_dsi->bridge); |
| 175 | dev_err(dev->dev, "failed to create dsi bridge: %d\n", ret); |
| 176 | msm_dsi->bridge = NULL; |
| 177 | goto fail; |
| 178 | } |
| 179 | |
| 180 | msm_dsi->connector = msm_dsi_manager_connector_init(msm_dsi->id); |
| 181 | if (IS_ERR(msm_dsi->connector)) { |
| 182 | ret = PTR_ERR(msm_dsi->connector); |
| 183 | dev_err(dev->dev, "failed to create dsi connector: %d\n", ret); |
| 184 | msm_dsi->connector = NULL; |
| 185 | goto fail; |
| 186 | } |
| 187 | |
| 188 | for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) { |
| 189 | encoders[i]->bridge = msm_dsi->bridge; |
| 190 | msm_dsi->encoders[i] = encoders[i]; |
| 191 | } |
| 192 | |
| 193 | priv->bridges[priv->num_bridges++] = msm_dsi->bridge; |
| 194 | priv->connectors[priv->num_connectors++] = msm_dsi->connector; |
| 195 | |
| 196 | return 0; |
| 197 | fail: |
| 198 | if (msm_dsi) { |
| 199 | /* bridge/connector are normally destroyed by drm: */ |
| 200 | if (msm_dsi->bridge) { |
| 201 | msm_dsi_manager_bridge_destroy(msm_dsi->bridge); |
| 202 | msm_dsi->bridge = NULL; |
| 203 | } |
| 204 | if (msm_dsi->connector) { |
| 205 | msm_dsi->connector->funcs->destroy(msm_dsi->connector); |
| 206 | msm_dsi->connector = NULL; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | return ret; |
| 211 | } |
| 212 | |