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![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
GIT_BRANCH=devel GIT_AUTHOR_DATE=1252851239 GIT_AUTHOR_NAME=Palash Bandyopadhyay GIT_AUTHOR_EMAIL=Palash.Bandyopadhyay@conexant.com Add conexant cx25821 driver release v106 of the Athena driver. Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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* Driver for the Conexant CX25821 PCIe bridge
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*
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* Copyright (C) 2009 Conexant Systems Inc.
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* Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "cx25821.h"
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/********************* GPIO stuffs *********************/
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void cx25821_set_gpiopin_direction( struct cx25821_dev *dev,
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int pin_number,
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int pin_logic_value)
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{
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int bit = pin_number;
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u32 gpio_oe_reg = GPIO_LO_OE;
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u32 gpio_register = 0;
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u32 value = 0;
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// Check for valid pinNumber
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if ( pin_number >= 47 )
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return;
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if ( pin_number > 31 )
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{
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bit = pin_number - 31;
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gpio_oe_reg = GPIO_HI_OE;
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}
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// Here we will make sure that the GPIOs 0 and 1 are output. keep the rest as is
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gpio_register = cx_read( gpio_oe_reg );
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if (pin_logic_value == 1)
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{
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value = gpio_register | Set_GPIO_Bit(bit) ;
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}
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else
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{
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value = gpio_register & Clear_GPIO_Bit(bit) ;
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}
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cx_write( gpio_oe_reg, value );
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}
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static void cx25821_set_gpiopin_logicvalue( struct cx25821_dev *dev,
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int pin_number,
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int pin_logic_value)
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{
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int bit = pin_number;
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u32 gpio_reg = GPIO_LO;
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u32 value = 0;
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// Check for valid pinNumber
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if (pin_number >= 47)
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return;
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cx25821_set_gpiopin_direction(dev, pin_number, 0); // change to output direction
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if ( pin_number > 31 )
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{
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bit = pin_number - 31;
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gpio_reg = GPIO_HI;
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}
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value = cx_read( gpio_reg );
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if (pin_logic_value == 0)
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{
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value &= Clear_GPIO_Bit(bit);
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}
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else
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{
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value |= Set_GPIO_Bit(bit);
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}
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cx_write( gpio_reg, value);
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}
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void cx25821_gpio_init(struct cx25821_dev *dev)
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{
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if( dev == NULL )
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{
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return;
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}
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switch (dev->board)
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{
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case CX25821_BOARD_CONEXANT_ATHENA10:
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default:
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//set GPIO 5 to select the path for Medusa/Athena
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cx25821_set_gpiopin_logicvalue(dev, 5, 1);
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mdelay(20);
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break;
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}
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}
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