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// SPDX-License-Identifier: GPL-2.0-only
/*
* OMAP IOMMU quirks for various TI SoCs
*
* Copyright (C) 2015-2019 Texas Instruments Incorporated - http://www.ti.com/
* Suman Anna <s-anna@ti.com>
*/
#include <linux/platform_device.h>
#include <linux/err.h>
#include "omap_hwmod.h"
#include "omap_device.h"
#include "powerdomain.h"
int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
u8 *pwrst)
{
struct powerdomain *pwrdm;
struct omap_device *od;
u8 next_pwrst;
od = to_omap_device(pdev);
if (!od)
return -ENODEV;
if (od->hwmods_cnt != 1)
return -EINVAL;
pwrdm = omap_hwmod_get_pwrdm(od->hwmods[0]);
if (!pwrdm)
return -EINVAL;
if (request)
*pwrst = pwrdm_read_next_pwrst(pwrdm);
if (*pwrst > PWRDM_POWER_RET)
return 0;
next_pwrst = request ? PWRDM_POWER_ON : *pwrst;
return pwrdm_set_next_pwrst(pwrdm, next_pwrst);
}
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