pm-r8a7740.c

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/*
 * r8a7740 power management support
 *
 * Copyright (C) 2012  Renesas Solutions Corp.
 * Copyright (C) 2012  Kuninori Morimoto <[email protected]>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/console.h>
#include <mach/pm-rmobile.h>

#ifdef CONFIG_PM
static int r8a7740_pd_a4s_suspend(void)
{
    /*
     * The A4S domain contains the CPU core and therefore it should
     * only be turned off if the CPU is in use.
     */
    return -EBUSY;
}

static int r8a7740_pd_a3sp_suspend(void)
{
    /*
     * Serial consoles make use of SCIF hardware located in A3SP,
     * keep such power domain on if "no_console_suspend" is set.
     */
    return console_suspend_enabled ? 0 : -EBUSY;
}

static struct rmobile_pm_domain r8a7740_pm_domains[] = {
    {
        .genpd.name = "A4S",
        .bit_shift  = 10,
        .gov        = &pm_domain_always_on_gov,
        .no_debug   = true,
        .suspend    = r8a7740_pd_a4s_suspend,
    },
    {
        .genpd.name = "A3SP",
        .bit_shift  = 11,
        .gov        = &pm_domain_always_on_gov,
        .no_debug   = true,
        .suspend    = r8a7740_pd_a3sp_suspend,
    },
    {
        .genpd.name = "A4LC",
        .bit_shift  = 1,
    },
};

void __init r8a7740_init_pm_domains(void)
{
    rmobile_init_domains(r8a7740_pm_domains, ARRAY_SIZE(r8a7740_pm_domains));
    pm_genpd_add_subdomain_names("A4S", "A3SP");
}

#endif /* CONFIG_PM */