mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 16:56:40 +07:00
9560dc1059
In the old panel device model we had omap_dss_output entities, representing the encoders in the DSS block. This entity had "device" field, which pointed to the panel that was using the omap_dss_output. With the new panel device model, the omap_dss_output is integrated into omap_dss_device, which now represents a "display entity". Thus the "device" field, now in omap_dss_device, points to the next entity in the display entity-chain. This patch renames the "device" field to "dst", which much better tells what the field points to. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Archit Taneja <archit@ti.com>
268 lines
5.9 KiB
C
268 lines
5.9 KiB
C
/*
|
|
* TFP410 DPI-to-DVI encoder 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/gpio.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/slab.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;
|
|
|
|
int pd_gpio;
|
|
int data_lines;
|
|
|
|
struct omap_video_timings timings;
|
|
};
|
|
|
|
#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
|
|
|
|
static int tfp410_connect(struct omap_dss_device *dssdev,
|
|
struct omap_dss_device *dst)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
int r;
|
|
|
|
if (omapdss_device_is_connected(dssdev))
|
|
return -EBUSY;
|
|
|
|
r = in->ops.dpi->connect(in, dssdev);
|
|
if (r)
|
|
return r;
|
|
|
|
dst->src = dssdev;
|
|
dssdev->dst = dst;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tfp410_disconnect(struct omap_dss_device *dssdev,
|
|
struct omap_dss_device *dst)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
WARN_ON(!omapdss_device_is_connected(dssdev));
|
|
if (!omapdss_device_is_connected(dssdev))
|
|
return;
|
|
|
|
WARN_ON(dst != dssdev->dst);
|
|
if (dst != dssdev->dst)
|
|
return;
|
|
|
|
dst->src = NULL;
|
|
dssdev->dst = NULL;
|
|
|
|
in->ops.dpi->disconnect(in, &ddata->dssdev);
|
|
}
|
|
|
|
static int tfp410_enable(struct omap_dss_device *dssdev)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
int r;
|
|
|
|
if (!omapdss_device_is_connected(dssdev))
|
|
return -ENODEV;
|
|
|
|
if (omapdss_device_is_enabled(dssdev))
|
|
return 0;
|
|
|
|
in->ops.dpi->set_timings(in, &ddata->timings);
|
|
in->ops.dpi->set_data_lines(in, ddata->data_lines);
|
|
|
|
r = in->ops.dpi->enable(in);
|
|
if (r)
|
|
return r;
|
|
|
|
if (gpio_is_valid(ddata->pd_gpio))
|
|
gpio_set_value_cansleep(ddata->pd_gpio, 1);
|
|
|
|
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tfp410_disable(struct omap_dss_device *dssdev)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
if (!omapdss_device_is_enabled(dssdev))
|
|
return;
|
|
|
|
if (gpio_is_valid(ddata->pd_gpio))
|
|
gpio_set_value_cansleep(ddata->pd_gpio, 0);
|
|
|
|
in->ops.dpi->disable(in);
|
|
|
|
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
|
|
}
|
|
|
|
static void tfp410_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.dpi->set_timings(in, timings);
|
|
}
|
|
|
|
static void tfp410_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 tfp410_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.dpi->check_timings(in, timings);
|
|
}
|
|
|
|
static const struct omapdss_dvi_ops tfp410_dvi_ops = {
|
|
.connect = tfp410_connect,
|
|
.disconnect = tfp410_disconnect,
|
|
|
|
.enable = tfp410_enable,
|
|
.disable = tfp410_disable,
|
|
|
|
.check_timings = tfp410_check_timings,
|
|
.set_timings = tfp410_set_timings,
|
|
.get_timings = tfp410_get_timings,
|
|
};
|
|
|
|
static int tfp410_probe_pdata(struct platform_device *pdev)
|
|
{
|
|
struct panel_drv_data *ddata = platform_get_drvdata(pdev);
|
|
struct encoder_tfp410_platform_data *pdata;
|
|
struct omap_dss_device *dssdev, *in;
|
|
|
|
pdata = dev_get_platdata(&pdev->dev);
|
|
|
|
ddata->pd_gpio = pdata->power_down_gpio;
|
|
|
|
ddata->data_lines = pdata->data_lines;
|
|
|
|
in = omap_dss_find_output(pdata->source);
|
|
if (in == NULL) {
|
|
dev_err(&pdev->dev, "Failed to find video source\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ddata->in = in;
|
|
|
|
dssdev = &ddata->dssdev;
|
|
dssdev->name = pdata->name;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tfp410_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);
|
|
|
|
if (dev_get_platdata(&pdev->dev)) {
|
|
r = tfp410_probe_pdata(pdev);
|
|
if (r)
|
|
return r;
|
|
} else {
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (gpio_is_valid(ddata->pd_gpio)) {
|
|
r = devm_gpio_request_one(&pdev->dev, ddata->pd_gpio,
|
|
GPIOF_OUT_INIT_LOW, "tfp410 PD");
|
|
if (r) {
|
|
dev_err(&pdev->dev, "Failed to request PD GPIO %d\n",
|
|
ddata->pd_gpio);
|
|
goto err_gpio;
|
|
}
|
|
}
|
|
|
|
dssdev = &ddata->dssdev;
|
|
dssdev->ops.dvi = &tfp410_dvi_ops;
|
|
dssdev->dev = &pdev->dev;
|
|
dssdev->type = OMAP_DISPLAY_TYPE_DPI;
|
|
dssdev->output_type = OMAP_DISPLAY_TYPE_DVI;
|
|
dssdev->owner = THIS_MODULE;
|
|
dssdev->phy.dpi.data_lines = ddata->data_lines;
|
|
|
|
r = omapdss_register_output(dssdev);
|
|
if (r) {
|
|
dev_err(&pdev->dev, "Failed to register output\n");
|
|
goto err_reg;
|
|
}
|
|
|
|
return 0;
|
|
err_reg:
|
|
err_gpio:
|
|
omap_dss_put_device(ddata->in);
|
|
return r;
|
|
}
|
|
|
|
static int __exit tfp410_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_output(&ddata->dssdev);
|
|
|
|
WARN_ON(omapdss_device_is_enabled(dssdev));
|
|
if (omapdss_device_is_enabled(dssdev))
|
|
tfp410_disable(dssdev);
|
|
|
|
WARN_ON(omapdss_device_is_connected(dssdev));
|
|
if (omapdss_device_is_connected(dssdev))
|
|
tfp410_disconnect(dssdev, dssdev->dst);
|
|
|
|
omap_dss_put_device(in);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver tfp410_driver = {
|
|
.probe = tfp410_probe,
|
|
.remove = __exit_p(tfp410_remove),
|
|
.driver = {
|
|
.name = "tfp410",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(tfp410_driver);
|
|
|
|
MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
|
|
MODULE_DESCRIPTION("TFP410 DPI to DVI encoder driver");
|
|
MODULE_LICENSE("GPL");
|