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/* $OpenBSD: simplepanel.c,v 1.2 2020/03/17 15:49:38 kettenis Exp $ */
/*
* Copyright (c) 2020 Patrick Wildt <patrick@blueri.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_gpio.h>
#include <dev/ofw/ofw_misc.h>
#include <dev/ofw/ofw_pinctrl.h>
#include <dev/ofw/ofw_regulator.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
const struct drm_display_mode boe_nv140fhmn49_mode = {
.clock = 148500,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 2200,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1125,
.vrefresh = 60,
};
int simplepanel_match(struct device *, void *, void *);
void simplepanel_attach(struct device *, struct device *, void *);
struct simplepanel_softc {
struct device sc_dev;
struct device_ports sc_ports;
struct drm_panel sc_panel;
const struct drm_display_mode *sc_mode;
};
struct cfattach simplepanel_ca = {
sizeof (struct simplepanel_softc),
simplepanel_match, simplepanel_attach
};
struct cfdriver simplepanel_cd = {
NULL, "simplepanel", DV_DULL
};
void *simplepanel_ep_get_cookie(void *, struct endpoint *);
int simplepanel_get_modes(struct drm_panel *);
struct drm_panel_funcs simplepanel_funcs = {
.get_modes = simplepanel_get_modes
};
int
simplepanel_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
return (OF_is_compatible(faa->fa_node, "simple-panel") ||
OF_is_compatible(faa->fa_node, "boe,nv140fhmn49"));
}
void
simplepanel_attach(struct device *parent, struct device *self, void *aux)
{
struct simplepanel_softc *sc = (struct simplepanel_softc *)self;
struct fdt_attach_args *faa = aux;
uint32_t power_supply;
uint32_t *gpios;
int len, err;
pinctrl_byname(faa->fa_node, "default");
power_supply = OF_getpropint(faa->fa_node, "power-supply", 0);
if (power_supply)
regulator_enable(power_supply);
len = OF_getproplen(faa->fa_node, "enable-gpios");
if (len > 0) {
gpios = malloc(len, M_TEMP, M_WAITOK);
OF_getpropintarray(faa->fa_node, "enable-gpios", gpios, len);
gpio_controller_config_pin(&gpios[0], GPIO_CONFIG_OUTPUT);
gpio_controller_set_pin(&gpios[0], 1);
free(gpios, M_TEMP, len);
}
if (OF_is_compatible(faa->fa_node, "boe,nv140fhmn49"))
sc->sc_mode = &boe_nv140fhmn49_mode;
drm_panel_init(&sc->sc_panel);
sc->sc_panel.dev = self;
sc->sc_panel.funcs = &simplepanel_funcs;
err = drm_panel_add(&sc->sc_panel);
if (err < 0) {
printf(": can't register panel\n");
return;
}
printf("\n");
sc->sc_ports.dp_node = faa->fa_node;
sc->sc_ports.dp_cookie = sc;
sc->sc_ports.dp_ep_get_cookie = simplepanel_ep_get_cookie;
device_ports_register(&sc->sc_ports, EP_DRM_PANEL);
}
void *
simplepanel_ep_get_cookie(void *cookie, struct endpoint *ep)
{
struct simplepanel_softc *sc = cookie;
return &sc->sc_panel;
}
static inline struct simplepanel_softc *
to_simplepanel(struct drm_panel *panel)
{
return container_of(panel, struct simplepanel_softc, sc_panel);
}
int
simplepanel_get_modes(struct drm_panel *panel)
{
struct drm_connector *connector = panel->connector;
struct simplepanel_softc *sc = to_simplepanel(panel);
struct drm_display_mode *mode;
if (sc->sc_mode == NULL)
return 0;
mode = drm_mode_duplicate(panel->drm, sc->sc_mode);
if (mode == NULL)
return 0;
mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
return 1;
}
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