| /* |
| * 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 <linux/of.h> |
| |
| #include <video/omapfb_dss.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; |
| |
| bool invert_polarity; |
| }; |
| |
| static const struct omap_video_timings tvc_pal_timings = { |
| .x_res = 720, |
| .y_res = 574, |
| .pixelclock = 13500000, |
| .hsw = 64, |
| .hfp = 12, |
| .hbp = 68, |
| .vsw = 5, |
| .vfp = 5, |
| .vbp = 41, |
| |
| .interlace = true, |
| }; |
| |
| static const struct of_device_id tvc_of_match[]; |
| |
| #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); |
| |
| if (!ddata->dev->of_node) { |
| in->ops.atv->set_type(in, OMAP_DSS_VENC_TYPE_COMPOSITE); |
| |
| 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->invert_polarity = pdata->invert_polarity; |
| |
| dssdev = &ddata->dssdev; |
| dssdev->name = pdata->name; |
| |
| return 0; |
| } |
| |
| static int tvc_probe_of(struct platform_device *pdev) |
| { |
| struct panel_drv_data *ddata = platform_get_drvdata(pdev); |
| struct device_node *node = pdev->dev.of_node; |
| struct omap_dss_device *in; |
| |
| in = omapdss_of_find_source_for_first_ep(node); |
| if (IS_ERR(in)) { |
| dev_err(&pdev->dev, "failed to find video source\n"); |
| return PTR_ERR(in); |
| } |
| |
| ddata->in = in; |
| |
| 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 if (pdev->dev.of_node) { |
| r = tvc_probe_of(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 const struct of_device_id tvc_of_match[] = { |
| { .compatible = "omapdss,svideo-connector", }, |
| { .compatible = "omapdss,composite-video-connector", }, |
| {}, |
| }; |
| |
| MODULE_DEVICE_TABLE(of, tvc_of_match); |
| |
| static struct platform_driver tvc_connector_driver = { |
| .probe = tvc_probe, |
| .remove = __exit_p(tvc_remove), |
| .driver = { |
| .name = "connector-analog-tv", |
| .of_match_table = tvc_of_match, |
| .suppress_bind_attrs = true, |
| }, |
| }; |
| |
| module_platform_driver(tvc_connector_driver); |
| |
| MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); |
| MODULE_DESCRIPTION("Analog TV Connector driver"); |
| MODULE_LICENSE("GPL"); |