source: mainline/uspace/drv/fb/amdm37x_dispc/main.c

/*
 * Copyright (c) 2020 Jiri Svoboda
 * Copyright (c) 2013 Jan Vesely
 * Copyright (c) 2011 Petr Koupy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

/** @addtogroup amdm37x_dispc
 * @{
 */
/**
 * @file
 */

#include <ddev_srv.h>
#include <ddf/driver.h>
#include <ddf/log.h>
#include <errno.h>
#include <ipcgfx/server.h>
#include <str_error.h>
#include <stdio.h>

#include "amdm37x_dispc.h"

#define NAME  "amdm37x_dispc"

static void amdm37x_client_conn(ipc_call_t *icall, void *arg)
{
        amdm37x_dispc_t *dispc;
        ddev_srv_t srv;
        sysarg_t gc_id;
        gfx_context_t *gc;
        errno_t rc;

        dispc = (amdm37x_dispc_t *) ddf_dev_data_get(
            ddf_fun_get_dev((ddf_fun_t *) arg));

        gc_id = ipc_get_arg3(icall);

        if (gc_id == 0) {
                /* Set up protocol structure */
                ddev_srv_initialize(&srv);
                srv.ops = &amdm37x_ddev_ops;
                srv.arg = dispc;

                /* Handle connection */
                ddev_conn(icall, &srv);
        } else {
                assert(gc_id == 42);

                rc = gfx_context_new(&amdm37x_gc_ops, dispc, &gc);
                if (rc != EOK)
                        goto error;

                /* GC connection */
                gc_conn(icall, gc);
        }

        return;
error:
        async_answer_0(icall, rc);
}

static errno_t amdm37x_dispc_dev_add(ddf_dev_t *dev)
{
        assert(dev);

        ddf_fun_t *fun = ddf_fun_create(dev, fun_exposed, "a");
        if (!fun) {
                ddf_log_error("Failed to create display device function.");
                return ENOMEM;
        }

        ddf_fun_set_conn_handler(fun, &amdm37x_client_conn);

        /* Hw part */
        amdm37x_dispc_t *dispc =
            ddf_dev_data_alloc(dev, sizeof(amdm37x_dispc_t));
        if (!dispc) {
                ddf_log_error("Failed to allocate dispc structure.");
                ddf_fun_destroy(fun);
                return ENOMEM;
        }

        errno_t rc = amdm37x_dispc_init(dispc, fun);
        if (rc != EOK) {
                ddf_log_error("Failed to init dispc: %s.", str_error(rc));
                ddf_fun_destroy(fun);
                return rc;
        }

        /* Bind function */
        rc = ddf_fun_bind(fun);
        if (rc != EOK) {
                ddf_log_error("Failed to bind function: %s.", str_error(rc));
                amdm37x_dispc_fini(dispc);
                ddf_fun_destroy(fun);
                return rc;
        }

        rc = ddf_fun_add_to_category(fun, "display-device");
        if (rc != EOK) {
                ddf_log_error("Failed to add function: %s to display device "
                    "category.", str_error(rc));
                amdm37x_dispc_fini(dispc);
                ddf_fun_unbind(fun);
                ddf_fun_destroy(fun);
                return rc;
        }

        ddf_log_note("Added device `%s'", ddf_dev_get_name(dev));
        return EOK;
}

static driver_ops_t amdm37x_dispc_driver_ops = {
        .dev_add = amdm37x_dispc_dev_add,
};

static driver_t amdm37x_dispc_driver = {
        .name = NAME,
        .driver_ops = &amdm37x_dispc_driver_ops
};

int main(int argc, char *argv[])
{
        printf("%s: HelenOS AM/DM37x framebuffer driver\n", NAME);
        ddf_log_init(NAME);
        return ddf_driver_main(&amdm37x_dispc_driver);
}

/** @}
 */