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Commit 99e6a23a authored by Mika Westerberg's avatar Mika Westerberg Committed by Russell King
Browse files

ARM: 5998/1: ep93xx: added chip revision reading function 



Added a new function: ep93xx_chip_revision() which reads chip revision
from the sysconfig register.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@iki.fi>
Acked-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent b370e082

arch/arm/mach-ep93xx/core.c

+14 −0
Original line number Diff line number Diff line
@@ -222,6 +222,20 @@ void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits) 
}

EXPORT_SYMBOL(ep93xx_devcfg_set_clear);



/**

 * ep93xx_chip_revision() - returns the EP93xx chip revision

 *

 * See <mach/platform.h> for more information.

 */

unsigned int ep93xx_chip_revision(void)

{

	unsigned int v;



	v = __raw_readl(EP93XX_SYSCON_SYSCFG);

	v &= EP93XX_SYSCON_SYSCFG_REV_MASK;

	v >>= EP93XX_SYSCON_SYSCFG_REV_SHIFT;

	return v;

}



/*************************************************************************

 * EP93xx peripheral handling

arch/arm/mach-ep93xx/include/mach/platform.h

+8 −0
Original line number Diff line number Diff line
@@ -33,6 +33,14 @@ static inline void ep93xx_devcfg_clear_bits(unsigned int bits) 
	ep93xx_devcfg_set_clear(0x00, bits);

}



#define EP93XX_CHIP_REV_D0	3

#define EP93XX_CHIP_REV_D1	4

#define EP93XX_CHIP_REV_E0	5

#define EP93XX_CHIP_REV_E1	6

#define EP93XX_CHIP_REV_E2	7



unsigned int ep93xx_chip_revision(void);



void ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr);

void ep93xx_register_i2c(struct i2c_gpio_platform_data *data,

			 struct i2c_board_info *devices, int num);