Tomi Valkeinen | 61a7f24 | 2013-05-24 14:21:30 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Analog TV Connector driver |
| 3 | * |
| 4 | * Copyright (C) 2013 Texas Instruments |
| 5 | * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License version 2 as published by |
| 9 | * the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | |
| 16 | #include <video/omapdss.h> |
| 17 | #include <video/omap-panel-data.h> |
| 18 | |
| 19 | struct panel_drv_data { |
| 20 | struct omap_dss_device dssdev; |
| 21 | struct omap_dss_device *in; |
| 22 | |
| 23 | struct device *dev; |
| 24 | |
| 25 | struct omap_video_timings timings; |
| 26 | |
| 27 | enum omap_dss_venc_type connector_type; |
| 28 | bool invert_polarity; |
| 29 | }; |
| 30 | |
| 31 | #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) |
| 32 | |
| 33 | static int tvc_connect(struct omap_dss_device *dssdev) |
| 34 | { |
| 35 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 36 | struct omap_dss_device *in = ddata->in; |
| 37 | int r; |
| 38 | |
| 39 | dev_dbg(ddata->dev, "connect\n"); |
| 40 | |
| 41 | if (omapdss_device_is_connected(dssdev)) |
| 42 | return 0; |
| 43 | |
| 44 | r = in->ops.atv->connect(in, dssdev); |
| 45 | if (r) |
| 46 | return r; |
| 47 | |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | static void tvc_disconnect(struct omap_dss_device *dssdev) |
| 52 | { |
| 53 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 54 | struct omap_dss_device *in = ddata->in; |
| 55 | |
| 56 | dev_dbg(ddata->dev, "disconnect\n"); |
| 57 | |
| 58 | if (!omapdss_device_is_connected(dssdev)) |
| 59 | return; |
| 60 | |
| 61 | in->ops.atv->disconnect(in, dssdev); |
| 62 | } |
| 63 | |
| 64 | static int tvc_enable(struct omap_dss_device *dssdev) |
| 65 | { |
| 66 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 67 | struct omap_dss_device *in = ddata->in; |
| 68 | int r; |
| 69 | |
| 70 | dev_dbg(ddata->dev, "enable\n"); |
| 71 | |
| 72 | if (!omapdss_device_is_connected(dssdev)) |
| 73 | return -ENODEV; |
| 74 | |
| 75 | if (omapdss_device_is_enabled(dssdev)) |
| 76 | return 0; |
| 77 | |
| 78 | in->ops.atv->set_timings(in, &ddata->timings); |
| 79 | |
| 80 | in->ops.atv->set_type(in, ddata->connector_type); |
| 81 | in->ops.atv->invert_vid_out_polarity(in, ddata->invert_polarity); |
| 82 | |
| 83 | r = in->ops.atv->enable(in); |
| 84 | if (r) |
| 85 | return r; |
| 86 | |
| 87 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
| 88 | |
| 89 | return r; |
| 90 | } |
| 91 | |
| 92 | static void tvc_disable(struct omap_dss_device *dssdev) |
| 93 | { |
| 94 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 95 | struct omap_dss_device *in = ddata->in; |
| 96 | |
| 97 | dev_dbg(ddata->dev, "disable\n"); |
| 98 | |
| 99 | if (!omapdss_device_is_enabled(dssdev)) |
| 100 | return; |
| 101 | |
| 102 | in->ops.atv->disable(in); |
| 103 | |
| 104 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
| 105 | } |
| 106 | |
| 107 | static void tvc_set_timings(struct omap_dss_device *dssdev, |
| 108 | struct omap_video_timings *timings) |
| 109 | { |
| 110 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 111 | struct omap_dss_device *in = ddata->in; |
| 112 | |
| 113 | ddata->timings = *timings; |
| 114 | dssdev->panel.timings = *timings; |
| 115 | |
| 116 | in->ops.atv->set_timings(in, timings); |
| 117 | } |
| 118 | |
| 119 | static void tvc_get_timings(struct omap_dss_device *dssdev, |
| 120 | struct omap_video_timings *timings) |
| 121 | { |
| 122 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 123 | |
| 124 | *timings = ddata->timings; |
| 125 | } |
| 126 | |
| 127 | static int tvc_check_timings(struct omap_dss_device *dssdev, |
| 128 | struct omap_video_timings *timings) |
| 129 | { |
| 130 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 131 | struct omap_dss_device *in = ddata->in; |
| 132 | |
| 133 | return in->ops.atv->check_timings(in, timings); |
| 134 | } |
| 135 | |
| 136 | static u32 tvc_get_wss(struct omap_dss_device *dssdev) |
| 137 | { |
| 138 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 139 | struct omap_dss_device *in = ddata->in; |
| 140 | |
| 141 | return in->ops.atv->get_wss(in); |
| 142 | } |
| 143 | |
| 144 | static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss) |
| 145 | { |
| 146 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
| 147 | struct omap_dss_device *in = ddata->in; |
| 148 | |
| 149 | return in->ops.atv->set_wss(in, wss); |
| 150 | } |
| 151 | |
| 152 | static struct omap_dss_driver tvc_driver = { |
| 153 | .connect = tvc_connect, |
| 154 | .disconnect = tvc_disconnect, |
| 155 | |
| 156 | .enable = tvc_enable, |
| 157 | .disable = tvc_disable, |
| 158 | |
| 159 | .set_timings = tvc_set_timings, |
| 160 | .get_timings = tvc_get_timings, |
| 161 | .check_timings = tvc_check_timings, |
| 162 | |
| 163 | .get_resolution = omapdss_default_get_resolution, |
| 164 | |
| 165 | .get_wss = tvc_get_wss, |
| 166 | .set_wss = tvc_set_wss, |
| 167 | }; |
| 168 | |
| 169 | static int tvc_probe_pdata(struct platform_device *pdev) |
| 170 | { |
| 171 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); |
| 172 | struct connector_atv_platform_data *pdata; |
| 173 | struct omap_dss_device *in, *dssdev; |
| 174 | |
| 175 | pdata = dev_get_platdata(&pdev->dev); |
| 176 | |
| 177 | in = omap_dss_find_output(pdata->source); |
| 178 | if (in == NULL) { |
| 179 | dev_err(&pdev->dev, "Failed to find video source\n"); |
| 180 | return -ENODEV; |
| 181 | } |
| 182 | |
| 183 | ddata->in = in; |
| 184 | |
| 185 | ddata->connector_type = pdata->connector_type; |
| 186 | ddata->invert_polarity = ddata->invert_polarity; |
| 187 | |
| 188 | dssdev = &ddata->dssdev; |
| 189 | dssdev->name = pdata->name; |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | static int tvc_probe(struct platform_device *pdev) |
| 195 | { |
| 196 | struct panel_drv_data *ddata; |
| 197 | struct omap_dss_device *dssdev; |
| 198 | int r; |
| 199 | |
| 200 | ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); |
| 201 | if (!ddata) |
| 202 | return -ENOMEM; |
| 203 | |
| 204 | platform_set_drvdata(pdev, ddata); |
| 205 | ddata->dev = &pdev->dev; |
| 206 | |
| 207 | if (dev_get_platdata(&pdev->dev)) { |
| 208 | r = tvc_probe_pdata(pdev); |
| 209 | if (r) |
| 210 | return r; |
| 211 | } else { |
| 212 | return -ENODEV; |
| 213 | } |
| 214 | |
| 215 | ddata->timings = omap_dss_pal_timings; |
| 216 | |
| 217 | dssdev = &ddata->dssdev; |
| 218 | dssdev->driver = &tvc_driver; |
| 219 | dssdev->dev = &pdev->dev; |
| 220 | dssdev->type = OMAP_DISPLAY_TYPE_VENC; |
| 221 | dssdev->owner = THIS_MODULE; |
| 222 | dssdev->panel.timings = omap_dss_pal_timings; |
| 223 | |
| 224 | r = omapdss_register_display(dssdev); |
| 225 | if (r) { |
| 226 | dev_err(&pdev->dev, "Failed to register panel\n"); |
| 227 | goto err_reg; |
| 228 | } |
| 229 | |
| 230 | return 0; |
| 231 | err_reg: |
| 232 | omap_dss_put_device(ddata->in); |
| 233 | return r; |
| 234 | } |
| 235 | |
| 236 | static int __exit tvc_remove(struct platform_device *pdev) |
| 237 | { |
| 238 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); |
| 239 | struct omap_dss_device *dssdev = &ddata->dssdev; |
| 240 | struct omap_dss_device *in = ddata->in; |
| 241 | |
| 242 | omapdss_unregister_display(&ddata->dssdev); |
| 243 | |
| 244 | tvc_disable(dssdev); |
| 245 | tvc_disconnect(dssdev); |
| 246 | |
| 247 | omap_dss_put_device(in); |
| 248 | |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | static struct platform_driver tvc_connector_driver = { |
| 253 | .probe = tvc_probe, |
| 254 | .remove = __exit_p(tvc_remove), |
| 255 | .driver = { |
| 256 | .name = "connector-analog-tv", |
| 257 | .owner = THIS_MODULE, |
| 258 | }, |
| 259 | }; |
| 260 | |
| 261 | module_platform_driver(tvc_connector_driver); |
| 262 | |
| 263 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); |
| 264 | MODULE_DESCRIPTION("Analog TV Connector driver"); |
| 265 | MODULE_LICENSE("GPL"); |