/* * Analog TV Connector driver * * Copyright (C) 2013 Texas Instruments * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #include <linux/slab.h> #include <linux/module.h> #include <linux/platform_device.h> #include <video/omapdss.h> #include <video/omap-panel-data.h> struct panel_drv_data { struct omap_dss_device dssdev; struct omap_dss_device *in; struct device *dev; struct omap_video_timings timings; enum omap_dss_venc_type connector_type; bool invert_polarity; }; static const struct omap_video_timings tvc_pal_timings = { .x_res = 720, .y_res = 574, .pixel_clock = 13500, .hsw = 64, .hfp = 12, .hbp = 68, .vsw = 5, .vfp = 5, .vbp = 41, .interlace = true, }; #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) static int tvc_connect(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; int r; dev_dbg(ddata->dev, "connect\n"); if (omapdss_device_is_connected(dssdev)) return 0; r = in->ops.atv->connect(in, dssdev); if (r) return r; return 0; } static void tvc_disconnect(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; dev_dbg(ddata->dev, "disconnect\n"); if (!omapdss_device_is_connected(dssdev)) return; in->ops.atv->disconnect(in, dssdev); } static int tvc_enable(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; int r; dev_dbg(ddata->dev, "enable\n"); if (!omapdss_device_is_connected(dssdev)) return -ENODEV; if (omapdss_device_is_enabled(dssdev)) return 0; in->ops.atv->set_timings(in, &ddata->timings); in->ops.atv->set_type(in, ddata->connector_type); in->ops.atv->invert_vid_out_polarity(in, ddata->invert_polarity); r = in->ops.atv->enable(in); if (r) return r; dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; return r; } static void tvc_disable(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; dev_dbg(ddata->dev, "disable\n"); if (!omapdss_device_is_enabled(dssdev)) return; in->ops.atv->disable(in); dssdev->state = OMAP_DSS_DISPLAY_DISABLED; } static void tvc_set_timings(struct omap_dss_device *dssdev, struct omap_video_timings *timings) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; ddata->timings = *timings; dssdev->panel.timings = *timings; in->ops.atv->set_timings(in, timings); } static void tvc_get_timings(struct omap_dss_device *dssdev, struct omap_video_timings *timings) { struct panel_drv_data *ddata = to_panel_data(dssdev); *timings = ddata->timings; } static int tvc_check_timings(struct omap_dss_device *dssdev, struct omap_video_timings *timings) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; return in->ops.atv->check_timings(in, timings); } static u32 tvc_get_wss(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; return in->ops.atv->get_wss(in); } static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; return in->ops.atv->set_wss(in, wss); } static struct omap_dss_driver tvc_driver = { .connect = tvc_connect, .disconnect = tvc_disconnect, .enable = tvc_enable, .disable = tvc_disable, .set_timings = tvc_set_timings, .get_timings = tvc_get_timings, .check_timings = tvc_check_timings, .get_resolution = omapdss_default_get_resolution, .get_wss = tvc_get_wss, .set_wss = tvc_set_wss, }; static int tvc_probe_pdata(struct platform_device *pdev) { struct panel_drv_data *ddata = platform_get_drvdata(pdev); struct connector_atv_platform_data *pdata; struct omap_dss_device *in, *dssdev; pdata = dev_get_platdata(&pdev->dev); in = omap_dss_find_output(pdata->source); if (in == NULL) { dev_err(&pdev->dev, "Failed to find video source\n"); return -EPROBE_DEFER; } ddata->in = in; ddata->connector_type = pdata->connector_type; ddata->invert_polarity = ddata->invert_polarity; dssdev = &ddata->dssdev; dssdev->name = pdata->name; return 0; } static int tvc_probe(struct platform_device *pdev) { struct panel_drv_data *ddata; struct omap_dss_device *dssdev; int r; ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; platform_set_drvdata(pdev, ddata); ddata->dev = &pdev->dev; if (dev_get_platdata(&pdev->dev)) { r = tvc_probe_pdata(pdev); if (r) return r; } else { return -ENODEV; } ddata->timings = tvc_pal_timings; dssdev = &ddata->dssdev; dssdev->driver = &tvc_driver; dssdev->dev = &pdev->dev; dssdev->type = OMAP_DISPLAY_TYPE_VENC; dssdev->owner = THIS_MODULE; dssdev->panel.timings = tvc_pal_timings; r = omapdss_register_display(dssdev); if (r) { dev_err(&pdev->dev, "Failed to register panel\n"); goto err_reg; } return 0; err_reg: omap_dss_put_device(ddata->in); return r; } static int __exit tvc_remove(struct platform_device *pdev) { struct panel_drv_data *ddata = platform_get_drvdata(pdev); struct omap_dss_device *dssdev = &ddata->dssdev; struct omap_dss_device *in = ddata->in; omapdss_unregister_display(&ddata->dssdev); tvc_disable(dssdev); tvc_disconnect(dssdev); omap_dss_put_device(in); return 0; } static struct platform_driver tvc_connector_driver = { .probe = tvc_probe, .remove = __exit_p(tvc_remove), .driver = { .name = "connector-analog-tv", .owner = THIS_MODULE, }, }; module_platform_driver(tvc_connector_driver); MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); MODULE_DESCRIPTION("Analog TV Connector driver"); MODULE_LICENSE("GPL");