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/*-
* Copyright (c) 2015 Michal Meloun
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <dev/extres/clk/clk.h>
#include <dev/drm2/drmP.h>
#include <dev/drm2/drm_crtc.h>
#include <dev/drm2/drm_crtc_helper.h>
#include <dev/drm2/drm_edid.h>
#include <dev/drm2/drm_fb_helper.h>
#include <dev/gpio/gpiobusvar.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <arm/nvidia/drm2/tegra_drm.h>
#include <gnu/dts/include/dt-bindings/gpio/gpio.h>
int
tegra_drm_connector_get_modes(struct drm_connector *connector)
{
struct tegra_drm_encoder *output;
struct edid *edid = NULL;
int rv;
output = container_of(connector, struct tegra_drm_encoder,
connector);
/* Panel is first */
if (output->panel != NULL) {
/* XXX panel parsing */
return (0);
}
/* static EDID is second*/
edid = output->edid;
/* EDID from monitor is last */
if (edid == NULL)
edid = drm_get_edid(connector, output->ddc);
if (edid == NULL)
return (0);
/* Process EDID */
drm_mode_connector_update_edid_property(connector, edid);
rv = drm_add_edid_modes(connector, edid);
drm_edid_to_eld(connector, edid);
return (rv);
}
struct drm_encoder *
tegra_drm_connector_best_encoder(struct drm_connector *connector)
{
struct tegra_drm_encoder *output;
output = container_of(connector, struct tegra_drm_encoder,
connector);
return &(output->encoder);
}
enum drm_connector_status
tegra_drm_connector_detect(struct drm_connector *connector, bool force)
{
struct tegra_drm_encoder *output;
bool active;
int rv;
output = container_of(connector, struct tegra_drm_encoder,
connector);
if (output->gpio_hpd == NULL) {
return ((output->panel != NULL) ?
connector_status_connected:
connector_status_disconnected);
}
rv = gpio_pin_is_active(output->gpio_hpd, &active);
if (rv != 0) {
device_printf(output->dev, " GPIO read failed: %d\n", rv);
return (connector_status_unknown);
}
return (active ?
connector_status_connected : connector_status_disconnected);
}
int
tegra_drm_encoder_attach(struct tegra_drm_encoder *output, phandle_t node)
{
int rv;
phandle_t ddc;
/* XXX parse output panel here */
rv = OF_getencprop_alloc(node, "nvidia,edid",
(void **)&output->edid);
/* EDID exist but have invalid size */
if ((rv >= 0) && (rv != sizeof(struct edid))) {
device_printf(output->dev,
"Malformed \"nvidia,edid\" property\n");
if (output->edid != NULL)
free(output->edid, M_OFWPROP);
return (ENXIO);
}
gpio_pin_get_by_ofw_property(output->dev, node, "nvidia,hpd-gpio",
&output->gpio_hpd);
ddc = 0;
OF_getencprop(node, "nvidia,ddc-i2c-bus", &ddc, sizeof(ddc));
if (ddc > 0)
output->ddc = OF_device_from_xref(ddc);
if ((output->edid == NULL) && (output->ddc == NULL))
return (ENXIO);
if (output->gpio_hpd != NULL) {
output->connector.polled =
// DRM_CONNECTOR_POLL_HPD;
DRM_CONNECTOR_POLL_DISCONNECT |
DRM_CONNECTOR_POLL_CONNECT;
}
return (0);
}
int tegra_drm_encoder_init(struct tegra_drm_encoder *output,
struct tegra_drm *drm)
{
if (output->panel) {
/* attach panel */
}
return (0);
}
int tegra_drm_encoder_exit(struct tegra_drm_encoder *output,
struct tegra_drm *drm)
{
if (output->panel) {
/* detach panel */
}
return (0);
}
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