u-boot/board/davinci/common/misc.h
Nick Thompson 90110e0eab Davinci: Table driven pinmux configuration
Davinci: Table driven pinmux configuration

Add code to allow pinmux_config tables to be grouped and configured
as a single resource. This removes multiple calls to the pinmux
configuration code from board_init and allows pinmuxes to be
individually configured and added by data manipulation only.

All related #ifdefs can the be removed from board_init code and
since the compiler optimises away statics, #ifdefs can be reduced in
the data definitions as well.

Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
2010-01-04 08:48:16 -06:00

54 lines
1.7 KiB
C

/*
* Copyright (C) 2008 Lyrtech <www.lyrtech.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __MISC_H
#define __MISC_H
/* pin muxer definitions */
#define PIN_MUX_NUM_FIELDS 8 /* Per register */
#define PIN_MUX_FIELD_SIZE 4 /* n in bits */
#define PIN_MUX_FIELD_MASK ((1 << PIN_MUX_FIELD_SIZE) - 1)
/* pin definition */
struct pinmux_config {
dv_reg *mux; /* Address of mux register */
unsigned char value; /* Value to set in field */
unsigned char field; /* field number */
};
/* pin table definition */
struct pinmux_resource {
const struct pinmux_config *pins;
const int n_pins;
};
#define PINMUX_ITEM(item) { \
.pins = item, \
.n_pins = ARRAY_SIZE(item) \
}
int dvevm_read_mac_address(uint8_t *buf);
void dv_configure_mac_address(uint8_t *rom_enetaddr);
int davinci_configure_pin_mux(const struct pinmux_config *pins, int n_pins);
int davinci_configure_pin_mux_items(const struct pinmux_resource *item,
int n_items);
#endif /* __MISC_H */