platform/google/rush/rush.c

/*
 * Copyright 2014, Google Inc.
 * 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.
 *    * Neither the name of Google Inc. nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
 * OWNER 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 <stdlib.h>
#include <unistd.h>

#include "mosys/alloc.h"
#include "mosys/command_list.h"
#include "mosys/platform.h"
#include "mosys/intf_list.h"
#include "mosys/log.h"

#include "drivers/gpio.h"
#include "drivers/google/cros_ec.h"
#include "drivers/nvidia/tegra124/gpio.h"

#include "lib/file.h"
#include "lib/math.h"
#include "lib/probe.h"

#include "rush.h"

struct board_id_gpio {
	int num;
	gpio_t *gpios;
};

const char *rush_ryu_id_list[] = {
	"google,ryu",
	NULL,
};

static gpio_t rush_ryu_boardid_gpio[] = {GPIO(Q3), GPIO(Q4)};

static struct board_id_gpio rush_ryu_gpio_list[] = {
	{ARRAY_SIZE(rush_ryu_boardid_gpio), rush_ryu_boardid_gpio},
};

struct platform_cmd *rush_sub[] = {
	&cmd_ec,
	&cmd_eeprom,
	&cmd_gpio,
	&cmd_nvram,
	&cmd_platform,
	&cmd_eventlog,
	NULL
};

static void update_platform_version(struct platform_intf *intf,
				    struct board_id_gpio *gpio,
				    const char *str_id)
{
	char *str;
	int value;

	str = mosys_malloc(strlen(str_id) + strlen("-revXX") + 1);
	if (str == NULL)
		return;

	value = gpio_get_in_tristate_values(intf, gpio->gpios, gpio->num);

	sprintf(str, "%s-rev%d", str_id, value);
	intf->version_id = str;
}

int rush_probe(struct platform_intf *intf)
{
	int index;

	index = probe_fdt_compatible(&rush_ryu_id_list[0],
					ARRAY_SIZE(rush_ryu_id_list), 0);
	if (index >= 0) {
		lprintf(LOG_DEBUG, "Found platform \"%s\" via FDT compatible "
				"node.\n", rush_ryu_id_list[index]);

		/* This condition should never be true */
		if (index >= ARRAY_SIZE(rush_ryu_gpio_list))
			return 0;

		update_platform_version(intf, &rush_ryu_gpio_list[index],
					rush_ryu_id_list[index]);

		return 1;
	}

	return 0;
}

enum rush_type get_rush_type(struct platform_intf *intf)
{
	enum rush_type ret = RUSH_UNKNOWN;

	if (!strncmp(intf->name, "Ryu", strlen(intf->name)))
		ret = RUSH_RYU;

	return ret;
}

static int rush_setup_post(struct platform_intf *intf)
{
	if (rush_ec_setup(intf) <= 0)
		return -1;

	return 0;
}

static int rush_destroy(struct platform_intf *intf)
{
	intf->cb->ec->destroy(intf);
	return 0;
}

struct eventlog_cb rush_eventlog_cb = {
	.print_type	= &elog_print_type,
	.print_data	= &elog_print_data,
	.print_multi	= &elog_print_multi,
	.verify		= &elog_verify,
	.verify_header	= &elog_verify_header,
	.add		= &elog_add_event_manually,
	.clear		= &elog_clear_manually,
	.fetch		= &elog_fetch_from_flash,
	.write		= &elog_write_to_flash,
};

struct platform_cb rush_cb = {
	.ec 		= &cros_ec_cb,
	.eeprom 	= &rush_eeprom_cb,
	.nvram		= &cros_ec_nvram_cb,
	.sys 		= &rush_sys_cb,
	.eventlog	= &rush_eventlog_cb,
};

struct platform_intf platform_rush = {
	.type		= PLATFORM_ARMV8,
	.name		= "Ryu",
	.id_list	= rush_ryu_id_list,
	.sub		= rush_sub,
	.cb		= &rush_cb,
	.probe		= &rush_probe,
	.setup_post	= &rush_setup_post,
	.destroy	= &rush_destroy,
	.version_id	= "google,ryu",
};