[U-Boot] [PATCH 3/5] ZOOM2 Add support for debug board detection.

[Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>]

On 10:41 Tue 28 Apr     , Tom Rix wrote:
> The logicpd web site is a good source for general information on this board.
> Please start looking here if the below links are broken.
> http://www.logicpd.com
> 
> This is a pdf of the product
> http://www.logicpd.com/sites/default/files/1012659A_Zoom_OMAP34x-II_MDP_Brief.pdf
> 
> This is a pdf of the product quick start guide.
> The debug board is described here.
> http://support.logicpd.com/downloads/1165/
> 
> This is a wiki showing the debug board in use
> https://omapzoom.org/gf/project/omapzoom/wiki/?pagename=GettingStartedWithZoomII_AKA_OMAP34XII_MDP
> 
> The zoom2 has an auxillary board that contains the serial, net, jtag and
> battery simulator.  This change supports a runtime check if the debug board is
> connected.
> 
> Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
> ---
>  board/omap3/zoom2/Makefile      |    3 +-
>  board/omap3/zoom2/debug_board.c |   58 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 60 insertions(+), 1 deletions(-)
>  create mode 100644 board/omap3/zoom2/debug_board.c
> 
> diff --git a/board/omap3/zoom2/Makefile b/board/omap3/zoom2/Makefile
> index 088b8cb..b8fa5a7 100644
> --- a/board/omap3/zoom2/Makefile
> +++ b/board/omap3/zoom2/Makefile
> @@ -25,7 +25,8 @@ include $(TOPDIR)/config.mk
>  
>  LIB	= $(obj)lib$(BOARD).a
>  
> -COBJS	:= zoom2.o
> +COBJS	:= zoom2.o \
> +	debug_board.o
>  
>  SRCS	:= $(COBJS:.o=.c)
>  OBJS	:= $(addprefix $(obj),$(COBJS))
> diff --git a/board/omap3/zoom2/debug_board.c b/board/omap3/zoom2/debug_board.c
> new file mode 100644
> index 0000000..55553c9
> --- /dev/null
> +++ b/board/omap3/zoom2/debug_board.c
> @@ -0,0 +1,58 @@
> +/*
> + * Copyright (c) 2009 Wind River Systems, Inc.
> + * Tom Rix <Tom.Rix@windriver.com>
> + *
> + * 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., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + *
> + */
> +#include <common.h>
> +#include <asm/arch/cpu.h>
> +#include <asm/io.h>
> +#include <asm/arch/mux.h>
> +#include <asm/arch/gpio.h>
> +
> +#define DEBUG_BOARD_CONNECTED     1
				^^^^^
whitespace please fix
> +#define DEBUG_BOARD_NOT_CONNECTED 0
> +
> +static int debug_board_connected = DEBUG_BOARD_CONNECTED;
> +
> +static void zoom2_debug_board_detect (void)
> +{
> +	int val = 0;
please add an empty line
> +	if (!omap_request_gpio(158)) {
> +		/*
> +		 * GPIO to query for debug board
> +		 * 158 db board query
> +		 */
> +		omap_set_gpio_direction(158, 1);
> +		val = omap_get_gpio_datain(158);
> +		omap_free_gpio(158);
> +	}
> +
> +	if (!val)
> +		debug_board_connected = DEBUG_BOARD_NOT_CONNECTED;
> +}
Best Regards,
J.