[U-Boot] [PATCH 1/2] gpio: add gpio api support to mx27 (v4)
Stefano Babic
sbabic at denx.de
Sun Aug 26 16:29:04 CEST 2012
On 25/08/2012 17:30, Philippe Reynes wrote:
> The gpio api has been tested on an armadeus apf27.
>
> Signed-off-by: Philippe Reynes <tremyfr at yahoo.fr>
> ---
> arch/arm/cpu/arm926ejs/mx27/generic.c | 11 +++---
> arch/arm/include/asm/arch-mx27/gpio.h | 55 +++++++++++++++++++++++++++++
> arch/arm/include/asm/arch-mx27/imx-regs.h | 30 ++++------------
> drivers/gpio/mxc_gpio.c | 8 +++--
> 4 files changed, 73 insertions(+), 31 deletions(-)
> create mode 100644 arch/arm/include/asm/arch-mx27/gpio.h
>
> diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c
> index 65c4813..41bb84b 100644
> --- a/arch/arm/cpu/arm926ejs/mx27/generic.c
> +++ b/arch/arm/cpu/arm926ejs/mx27/generic.c
> @@ -24,6 +24,7 @@
> #include <asm/io.h>
> #include <asm/arch/imx-regs.h>
> #include <asm/arch/clock.h>
> +#include <asm/arch/gpio.h>
> #ifdef CONFIG_MXC_MMC
> #include <asm/arch/mxcmmc.h>
> #endif
> @@ -209,7 +210,7 @@ int cpu_mmc_init(bd_t *bis)
>
> void imx_gpio_mode(int gpio_mode)
> {
> - struct gpio_regs *regs = (struct gpio_regs *)IMX_GPIO_BASE;
> + struct gpio_port_regs *regs = (struct gpio_port_regs *)IMX_GPIO_BASE;
> unsigned int pin = gpio_mode & GPIO_PIN_MASK;
> unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
> unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT;
> @@ -228,11 +229,11 @@ void imx_gpio_mode(int gpio_mode)
>
> /* Data direction */
> if (gpio_mode & GPIO_OUT) {
> - writel(readl(®s->port[port].ddir) | 1 << pin,
> - ®s->port[port].ddir);
> + writel(readl(®s->port[port].gpio_dir) | 1 << pin,
> + ®s->port[port].gpio_dir);
> } else {
> - writel(readl(®s->port[port].ddir) & ~(1 << pin),
> - ®s->port[port].ddir);
> + writel(readl(®s->port[port].gpio_dir) & ~(1 << pin),
> + ®s->port[port].gpio_dir);
> }
>
> /* Primary / alternate function */
> diff --git a/arch/arm/include/asm/arch-mx27/gpio.h b/arch/arm/include/asm/arch-mx27/gpio.h
> new file mode 100644
> index 0000000..4b4eb0d
> --- /dev/null
> +++ b/arch/arm/include/asm/arch-mx27/gpio.h
> @@ -0,0 +1,55 @@
> +/*
> + * Copyright (C) 2012
> + * Philippe Reynes <tremyfr at yahoo.fr>
> + *
> + * 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., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + */
> +
> +
> +#ifndef __ASM_ARCH_MX27_GPIO_H
> +#define __ASM_ARCH_MX27_GPIO_H
> +
> +/* GPIO registers */
> +struct gpio_regs {
> + u32 gpio_dir; /* DDIR */
> + u32 ocr1;
> + u32 ocr2;
> + u32 iconfa1;
> + u32 iconfa2;
> + u32 iconfb1;
> + u32 iconfb2;
> + u32 gpio_dr; /* DR */
> + u32 gius;
> + u32 gpio_psr; /* SSR */
> + u32 icr1;
> + u32 icr2;
> + u32 imr;
> + u32 isr;
> + u32 gpr;
> + u32 swr;
> + u32 puen;
> + u32 res[0x2f];
> +};
> +
> +/* This structure is used by the function imx_gpio_mode */
> +struct gpio_port_regs {
> + struct gpio_regs port[6];
> +};
> +
> +#endif
> diff --git a/arch/arm/include/asm/arch-mx27/imx-regs.h b/arch/arm/include/asm/arch-mx27/imx-regs.h
> index f7cf85b..f78d5f2 100644
> --- a/arch/arm/include/asm/arch-mx27/imx-regs.h
> +++ b/arch/arm/include/asm/arch-mx27/imx-regs.h
> @@ -164,29 +164,6 @@ struct gpt_regs {
> #define PORTE 4
> #define PORTF 5
>
> -struct gpio_regs {
> - struct {
> - u32 ddir;
> - u32 ocr1;
> - u32 ocr2;
> - u32 iconfa1;
> - u32 iconfa2;
> - u32 iconfb1;
> - u32 iconfb2;
> - u32 dr;
> - u32 gius;
> - u32 ssr;
> - u32 icr1;
> - u32 icr2;
> - u32 imr;
> - u32 isr;
> - u32 gpr;
> - u32 swr;
> - u32 puen;
> - u32 res[0x2f];
> - } port[6];
> -};
> -
> /* IIM Control Registers */
> struct iim_regs {
> u32 iim_stat;
> @@ -474,6 +451,13 @@ struct fuse_bank0_regs {
> #define TSTAT_CAPT (1 << 1) /* Capture event */
> #define TSTAT_COMP 1 /* Compare event */
>
> +#define GPIO1_BASE_ADDR 0x10015000
> +#define GPIO2_BASE_ADDR 0x10015100
> +#define GPIO3_BASE_ADDR 0x10015200
> +#define GPIO4_BASE_ADDR 0x10015300
> +#define GPIO5_BASE_ADDR 0x10015400
> +#define GPIO6_BASE_ADDR 0x10015500
> +
> #define GPIO_PIN_MASK 0x1f
>
> #define GPIO_PORT_SHIFT 5
> diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
> index e9bf278..2c79bff 100644
> --- a/drivers/gpio/mxc_gpio.c
> +++ b/drivers/gpio/mxc_gpio.c
> @@ -41,13 +41,15 @@ static unsigned long gpio_ports[] = {
> [0] = GPIO1_BASE_ADDR,
> [1] = GPIO2_BASE_ADDR,
> [2] = GPIO3_BASE_ADDR,
> -#if defined(CONFIG_MX25) || defined(CONFIG_MX51) || defined(CONFIG_MX53) || \
> - defined(CONFIG_MX6Q)
> +#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
> + defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
> [3] = GPIO4_BASE_ADDR,
> #endif
> -#if defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
> +#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
> [4] = GPIO5_BASE_ADDR,
> [5] = GPIO6_BASE_ADDR,
> +#endif
> +#if defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
> [6] = GPIO7_BASE_ADDR,
> #endif
> };
>
Acked-by: Stefano Babic <sbabic at denx.de>
Best regards,
Stefano Babic
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