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/*
* Copyright (c) 2011 The Chromium OS Authors.
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/* Tegra2 power control functions */
#include <asm/io.h>
#include <asm/arch-tegra/bitfield.h>
#include <asm/arch/clock.h>
#include <asm/arch-tegra/pmc.h>
#include <asm/arch-tegra/power.h>
#include <asm/arch/tegra.h>
#include <common.h>
void power_enable_partition(enum power_partition_id id)
{
struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
enum power_partition_id clamp_id = id;
/* The order of these operations is important */
reset_set_enable(PERIPH_ID_3D, 1);
/* Turn the power gate on if it's not on already */
if (!(readl(&pmc->pmc_pwrgate_status) & (1 << id)))
writel(PWRGATE_ENABLE | id, &pmc->pmc_pwrgate_toggle);
clock_enable(PERIPH_ID_3D);
udelay(10);
/* The SOC switches these IDs for clamping */
if (clamp_id == POWERP_PCI)
clamp_id = POWERP_VIDEO_DEC;
else if (clamp_id == POWERP_VIDEO_DEC)
clamp_id = POWERP_PCI;
writel(1 << clamp_id, &pmc->pmc_remove_clamping);
reset_set_enable(PERIPH_ID_3D, 0);
}
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