[U-Boot] [PATCH 1/2] gpio: Add GPIO driver framework for Marvell SoCs

[Lei Wen]

Hi Ajay,

On Thu, Jul 21, 2011 at 1:39 PM, Ajay Bhargav
<ajay.bhargav at einfochips.com> wrote:
> This patch adds generic GPIO driver framework support for Marvell SoCs.
>
> To enable GPIO driver define CONFIG_MV_GPIO and for GPIO commands
> define CONFIG_CMD_GPIO in your board configuration file.
>
> Signed-off-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
> ---
>  drivers/gpio/Makefile |    1 +
>  drivers/gpio/mvgpio.c |  125 +++++++++++++++++++++++++++++++++++++++++++++++++
>  include/mvgpio.h      |   52 ++++++++++++++++++++
>  3 files changed, 178 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/gpio/mvgpio.c
>  create mode 100644 include/mvgpio.h
>
> diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
> index 62ec97d..c6f652f 100644
> --- a/drivers/gpio/Makefile
> +++ b/drivers/gpio/Makefile
> @@ -28,6 +28,7 @@ LIB   := $(obj)libgpio.o
>  COBJS-$(CONFIG_AT91_GPIO)      += at91_gpio.o
>  COBJS-$(CONFIG_KIRKWOOD_GPIO)  += kw_gpio.o
>  COBJS-$(CONFIG_MARVELL_MFP)    += mvmfp.o
> +COBJS-$(CONFIG_MV_GPIO)                += mvgpio.o
>  COBJS-$(CONFIG_MXC_GPIO)       += mxc_gpio.o
>  COBJS-$(CONFIG_PCA953X)                += pca953x.o
>  COBJS-$(CONFIG_S5P)            += s5p_gpio.o
> diff --git a/drivers/gpio/mvgpio.c b/drivers/gpio/mvgpio.c
> new file mode 100644
> index 0000000..d64f0db
> --- /dev/null
> +++ b/drivers/gpio/mvgpio.c
> @@ -0,0 +1,125 @@
> +/*
> + * (C) Copyright 2011
> + * eInfochips Ltd. <www.einfochips.com>
> + * Written-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
> + *
> + * (C) Copyright 2010
> + * Marvell Semiconductor <www.marvell.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., 51 Franklin Street, Fifth Floor, Boston,
> + * MA 02110-1301 USA
> + */
> +
> +#include <common.h>
> +#include <asm/io.h>
> +#include <asm/errno.h>
> +#include <asm/gpio.h>
> +
> +char gpio_names[MV_MAX_GPIO][GPIO_LABEL_MAX];
> +
> +static int get_gpio_base(int bank)
> +{
> +       switch (bank) {
> +       case 0:
> +               return GPIO_BANK0_BASE;
> +       case 1:
> +               return GPIO_BANK1_BASE;
> +       case 2:
> +               return GPIO_BANK2_BASE;
> +       case 3:
> +               return GPIO_BANK3_BASE;
> +       }
> +       return 0;
> +}

Please put this get_gpio_base into arch's self directory, since
different soc may have
different number of banks. For example, mmp3 has 6 banks.

Best regards,
Lei