blob: 9eabd7201a128c0af2ab618ac4acc441b310f0fd [file] [log] [blame]
/*
* Analog TV Connector driver
*
* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
* 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 "../dss/omapdss.h"
struct panel_drv_data {
struct omap_dss_device dssdev;
struct omap_dss_device *in;
struct device *dev;
struct videomode vm;
};
static const struct videomode tvc_pal_vm = {
.hactive = 720,
.vactive = 574,
.pixelclock = 13500000,
.hsync_len = 64,
.hfront_porch = 12,
.hback_porch = 68,
.vsync_len = 5,
.vfront_porch = 5,
.vback_porch = 41,
.flags = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
DISPLAY_FLAGS_VSYNC_LOW,
};
#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;
int r;
dev_dbg(ddata->dev, "connect\n");
if (omapdss_device_is_connected(dssdev))
return 0;
in = omapdss_of_find_source_for_first_ep(ddata->dev->of_node);
if (IS_ERR(in)) {
dev_err(ddata->dev, "failed to find video source\n");
return PTR_ERR(in);
}
r = in->ops.atv->connect(in, dssdev);
if (r) {
omap_dss_put_device(in);
return r;
}
ddata->in = in;
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);
omap_dss_put_device(in);
ddata->in = NULL;
}
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->vm);
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 videomode *vm)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *in = ddata->in;
ddata->vm = *vm;
dssdev->panel.vm = *vm;
in->ops.atv->set_timings(in, vm);
}
static void tvc_get_timings(struct omap_dss_device *dssdev,
struct videomode *vm)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
*vm = ddata->vm;
}
static int tvc_check_timings(struct omap_dss_device *dssdev,
struct videomode *vm)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *in = ddata->in;
return in->ops.atv->check_timings(in, vm);
}
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_wss = tvc_get_wss,
.set_wss = tvc_set_wss,
};
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;
ddata->vm = tvc_pal_vm;
dssdev = &ddata->dssdev;
dssdev->driver = &tvc_driver;
dssdev->dev = &pdev->dev;
dssdev->type = OMAP_DISPLAY_TYPE_VENC;
dssdev->owner = THIS_MODULE;
dssdev->panel.vm = tvc_pal_vm;
r = omapdss_register_display(dssdev);
if (r) {
dev_err(&pdev->dev, "Failed to register panel\n");
return r;
}
return 0;
}
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;
omapdss_unregister_display(&ddata->dssdev);
tvc_disable(dssdev);
tvc_disconnect(dssdev);
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");