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/*
* i.MX drm driver - parallel display implementation
*
* Copyright (C) 2016 Philippe Leduc
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <fb.h>
#include <io.h>
#include <of_graph.h>
#include <driver.h>
#include <malloc.h>
#include <errno.h>
#include <init.h>
#include <video/vpl.h>
#include <video/media-bus-format.h>
#include <linux/err.h>
#include "imx-ipu-v3.h"
struct imx_pd {
struct device_d *dev;
struct display_timings *timings;
u32 bus_format;
struct vpl vpl;
};
static int imx_pd_ioctl(struct vpl *vpl, unsigned int port,
unsigned int cmd, void *data)
{
struct imx_pd *imx_pd = container_of(vpl, struct imx_pd, vpl);
struct ipu_di_mode *mode;
struct display_timings *timings;
switch (cmd) {
case IMX_IPU_VPL_DI_MODE:
mode = data;
mode->di_clkflags = IPU_DI_CLKMODE_NON_FRACTIONAL;
mode->bus_format = imx_pd->bus_format;
return 0;
case VPL_GET_VIDEOMODES:
timings = data;
timings->num_modes = imx_pd->timings->num_modes;
timings->native_mode = imx_pd->timings->native_mode;
timings->modes = imx_pd->timings->modes;
timings->edid = NULL;
return 0;
}
return 0;
}
static int imx_pd_probe(struct device_d *dev)
{
struct device_node *node = dev->device_node;
struct imx_pd *imx_pd;
const char *fmt;
int ret;
imx_pd = xzalloc(sizeof(*imx_pd));
imx_pd->dev = dev;
ret = of_property_read_string(node, "interface-pix-fmt", &fmt);
if (!ret) {
if (!strcmp(fmt, "rgb24"))
imx_pd->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
else if (!strcmp(fmt, "rgb565"))
imx_pd->bus_format = MEDIA_BUS_FMT_RGB565_1X16;
else if (!strcmp(fmt, "bgr666"))
imx_pd->bus_format = MEDIA_BUS_FMT_RGB666_1X18;
else {
dev_err(dev, "invalid interface-pix-fmt\n");
return -EINVAL;
}
}
imx_pd->timings = of_get_display_timings(node);
if (!imx_pd->timings) {
dev_err(dev, "No display timings panel found\n");
return -EINVAL;
}
imx_pd->vpl.node = node;
imx_pd->vpl.ioctl = &imx_pd_ioctl;
ret = vpl_register(&imx_pd->vpl);
if (ret)
return ret;
return 0;
}
static struct of_device_id imx_pd_dt_ids[] = {
{ .compatible = "fsl,imx-parallel-display", },
{ /* sentinel */ }
};
static struct driver_d imx_pd_driver = {
.probe = imx_pd_probe,
.of_compatible = imx_pd_dt_ids,
.name = "imx-parallel-display",
};
device_platform_driver(imx_pd_driver);
MODULE_DESCRIPTION("i.MX Parallel display driver");
MODULE_AUTHOR("Philippe Leduc");
MODULE_LICENSE("GPL");
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