drivers/soc/berlin/modules/nna/hal/os/linux/kernel/platform/syna/gc_hal_kernel_platform_berlin.c

/****************************************************************************
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*    The MIT License (MIT)
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*    Copyright (c) 2014 - 2018 Vivante Corporation
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*    The GPL License (GPL)
*
*    Copyright (C) 2014 - 2018 Vivante Corporation
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*    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
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*    Note: This software is released under dual MIT and GPL licenses. A
*    recipient may use this file under the terms of either the MIT license or
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*    indicate your decision by deleting one of the above license notices in your
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*****************************************************************************/


#include "gc_hal_kernel_linux.h"
#include "gc_hal_kernel_platform.h"

#if USE_PLATFORM_DRIVER
#   include <linux/platform_device.h>
#endif
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/clk.h>


static struct of_device_id gpu_match[] = {
    {
        .compatible = "vivante,galcore"
    },
    {
    },
};

gceSTATUS
_AdjustParam(
    IN gcsPLATFORM *Platform,
    OUT gcsMODULE_PARAMETERS *Args
    )
{
    struct platform_device *pdev = Platform->device;
    struct device *dev = &pdev->dev;
    struct resource *res = NULL;
    int irq = 0;

    /* get the reg section */
    res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
    if (!res)
    {
        printk("gpu warning: platform_get_resource failed!\n");
        return gcvSTATUS_TRUE;
    }
    else
    {
        Args->registerBases[gcvCORE_MAJOR] = res->start;
        Args->registerSizes[gcvCORE_MAJOR] = resource_size(res);
    }

    /* get the reset section */
    Args->rc_rst = devm_reset_control_get(dev, NULL);
    if (Args->rc_rst < 0)
	    return gcvSTATUS_INVALID_ARGUMENT;

    /* get the interrupt section */
    irq = platform_get_irq(pdev, 0);
    if (irq < 0)
    {
        printk("gpu warning:  platform_get_irq failed, irq=%d!\n", irq);
        return gcvSTATUS_TRUE;
    }
    else
    {
        Args->irqs[gcvCORE_MAJOR] = irq;
    }

    /* get the clock section */
    Platform->coreclk = devm_clk_get(dev, "core");
    if (IS_ERR(Platform->coreclk))
    {
        printk("gpu warning: devm_clk_get failed, clk=%p!\n", Platform->coreclk);
        return gcvSTATUS_TRUE;
    }
    else
    {
        clk_prepare_enable(Platform->coreclk);
    }

    Platform->sysclk = devm_clk_get(dev, "sys");
    if (IS_ERR(Platform->sysclk))
    {
        printk("gpu warning: devm_clk_get failed, clk=%p!\n", Platform->sysclk);
        return gcvSTATUS_TRUE;
    }
    else
    {
        clk_prepare_enable(Platform->sysclk);
    }

    Args->showArgs = 0;

    return gcvSTATUS_OK;
}

gceSTATUS
_PutPower(IN gcsPLATFORM * Platform)
{
	clk_disable_unprepare(Platform->sysclk);
	clk_disable_unprepare(Platform->coreclk);
	return gcvSTATUS_OK;
}

static struct _gcsPLATFORM_OPERATIONS berlin_ops =
{
    .adjustParam   = _AdjustParam,
    .putPower = _PutPower,
};

static struct _gcsPLATFORM berlin_platform =
{
    .name = __FILE__,
    .ops  = &berlin_ops,
};


int gckPLATFORM_Init(struct platform_driver *pdrv,
            struct _gcsPLATFORM **platform)
{
    pdrv->driver.of_match_table = of_match_ptr(gpu_match);
    *platform = &berlin_platform;
    return 0;
}

int gckPLATFORM_Terminate(struct _gcsPLATFORM *platform)
{
    return 0;
}