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/* -*- pse-c -*-
*-----------------------------------------------------------------------------
* Filename: pwr_plb.c
* $Revision: 1.4 $
*-----------------------------------------------------------------------------
* Copyright © 2002-2010, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*-----------------------------------------------------------------------------
* Description:
*
*-----------------------------------------------------------------------------
*/
/* copied from napa */
#include <io.h>
#include "igd_pwr.h"
#include "../cmn/pwr_dispatch.h"
#include <plb/regs.h>
/*!
* @addtogroup state_group
* @{
*/
static int pwr_query_full_plb(unsigned int power_state);
static int pwr_set_plb(igd_context_t *context, unsigned int power_state);
static int pwr_init_plb(igd_context_t *context);
pwr_dispatch_t pwr_dispatch_plb = {
pwr_query_full_plb,
pwr_set_plb,
pwr_init_plb,
};
/*!
* This function returns "0" for all ACPI system states.
*
* @param power_state the requested power state
*
* @return 0
*/
static int pwr_query_full_plb(unsigned int power_state)
{ /* pwr_query_full */
switch( power_state ) {
case IGD_ADAPTERPOWERSTATE_ON:
case IGD_ADAPTERPOWERSTATE_STANDBY:
case IGD_ADAPTERPOWERSTATE_OFF:
case IGD_ADAPTERPOWERSTATE_SUSPEND:
case IGD_ADAPTERPOWERSTATE_HIBERNATE:
default:
return 0;
break;
}
} /* pwr_query_full */
/*!
*
* @patam context
* @param power_state the requested power state
*
* @return 0
*/
static int pwr_set_plb(igd_context_t *context, unsigned int power_state)
{
unsigned char *mmio;
mmio = context->device_context.virt_mmadr;
switch (power_state) {
case IGD_POWERSTATE_D0:
break;
case IGD_POWERSTATE_D1:
break;
case IGD_POWERSTATE_D2:
break;
case IGD_POWERSTATE_D3:
break;
default:
break;
}
return 0;
}
/*!
*
* @param context
*
* @return 0
*/
static int pwr_init_plb(igd_context_t *context)
{
unsigned char *mmio;
mmio = context->device_context.virt_mmadr;
/* Reset CLKGATECTL and CLKGATECTLOVR */
EMGD_WRITE32(0x1111111, mmio + PSB_CR_CLKGATECTL);
EMGD_WRITE32(0, mmio + PSB_CR_CLKGATECTL + 8);
return 0;
}
/*-----------------------------------------------------------------------------
* $Id: pwr_plb.c,v 1.4 2010/07/23 16:54:50 bpaauwe Exp $
* $Source: /nfs/fm/proj/eia/cvsroot/koheo/linux/egd_drm/emgd/state/power/plb/pwr_plb.c,v $
*-----------------------------------------------------------------------------
*/
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