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complete i.MX GPIO support 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-12-03 14:16:33 +01:00
parent 6bd5caf6c6
commit f601b74d01
12 changed files with 271 additions and 38 deletions
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14
arch/arm/mach-imx/Makefile
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@ -1,10 +1,10 @@
obj-y += clocksource.o
obj-$(CONFIG_ARCH_IMX1) += speed-imx1.o gpio.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX25) += speed-imx25.o iomux-v3.o
obj-$(CONFIG_ARCH_IMX21) += speed-imx21.o gpio.o imx21.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX27) += speed-imx27.o gpio.o imx27.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX31) += speed-imx31.o iomux-v2.o
obj-$(CONFIG_ARCH_IMX35) += speed-imx35.o iomux-v3.o
obj-y += clocksource.o gpio.o
obj-$(CONFIG_ARCH_IMX1) += speed-imx1.o imx1.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX25) += speed-imx25.o imx25.o iomux-v3.o
obj-$(CONFIG_ARCH_IMX21) += speed-imx21.o imx21.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX27) += speed-imx27.o imx27.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX31) += speed-imx31.o imx31.o iomux-v2.o
obj-$(CONFIG_ARCH_IMX35) += speed-imx35.o imx35.o iomux-v3.o
obj-$(CONFIG_IMX_CLKO) += clko.o
obj-$(CONFIG_NAND_IMX) += nand.o
obj-y += speed.o

87
arch/arm/mach-imx/gpio.c
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@ -24,28 +24,105 @@
*/
#include <common.h>
#include <errno.h>
#include <asm/io.h>
#include <mach/imx-regs.h>
#if defined CONFIG_ARCH_IMX1 || defined CONFIG_ARCH_IMX21 || defined CONFIG_ARCH_IMX27
#define GPIO_DR 0x1c
#define GPIO_GDIR 0x00
#define GPIO_PSR 0x24
#define GPIO_ICR1 0x28
#define GPIO_ICR2 0x2C
#define GPIO_IMR 0x30
#define GPIO_ISR 0x34
#else
#define GPIO_DR 0x00
#define GPIO_GDIR 0x04
#define GPIO_PSR 0x08
#define GPIO_ICR1 0x0C
#define GPIO_ICR2 0x10
#define GPIO_IMR 0x14
#define GPIO_ISR 0x18
#define GPIO_ISR 0x18
#endif
extern void *imx_gpio_base[];
extern int imx_gpio_count;
static void *gpio_get_base(unsigned gpio)
{
if (gpio >= imx_gpio_count)
return 0;
return imx_gpio_base[gpio / 32];
}
void gpio_set_value(unsigned gpio, int value)
{
if(value)
DR(gpio >> GPIO_PORT_SHIFT) |= (1 << (gpio & GPIO_PIN_MASK));
void *base = gpio_get_base(gpio);
int shift = gpio % 32;
u32 val;
if (!base)
return;
val = readl(base + GPIO_DR);
if (value)
val |= 1 << shift;
else
DR(gpio >> GPIO_PORT_SHIFT) &= ~(1 << (gpio & GPIO_PIN_MASK));
val &= ~(1 << shift);
writel(val, base + GPIO_DR);
}
int gpio_direction_input(unsigned gpio)
{
imx_gpio_mode(gpio | GPIO_IN | GPIO_GIUS | GPIO_GPIO);
void *base = gpio_get_base(gpio);
int shift = gpio % 32;
u32 val;
if (!base)
return -EINVAL;
val = readl(base + GPIO_GDIR);
val &= ~(1 << shift);
writel(val, base + GPIO_GDIR);
return 0;
}
int gpio_direction_output(unsigned gpio, int value)
{
void *base = gpio_get_base(gpio);
int shift = gpio % 32;
u32 val;
if (!base)
return -EINVAL;
gpio_set_value(gpio, value);
imx_gpio_mode(gpio | GPIO_OUT | GPIO_GIUS | GPIO_GPIO);
val = readl(base + GPIO_GDIR);
val |= 1 << shift;
writel(val, base + GPIO_GDIR);
return 0;
}
int gpio_get_value(unsigned gpio)
{
void *base = gpio_get_base(gpio);
int shift = gpio % 32;
u32 val;
if (!base)
return -EINVAL;
val = readl(base + GPIO_DR);
return val & (1 << shift) ? 1 : 0;
}

4
arch/arm/mach-imx/gpio.h Normal file
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@ -0,0 +1,4 @@
extern void *imx_gpio_base[];
extern int imx_gpio_count;

31
arch/arm/mach-imx/imx1.c Normal file
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@ -0,0 +1,31 @@
/*
* 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 "gpio.h"
void *imx_gpio_base[] = {
(void *)0x0021c000,
(void *)0x0021c100,
(void *)0x0021c200,
(void *)0x0021c300,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

14
arch/arm/mach-imx/imx21.c
View File

@ -18,6 +18,8 @@
#include <common.h>
#include <mach/imx-regs.h>
#include "gpio.h"
int imx_silicon_revision(void)
{
// Known values:
@ -25,3 +27,15 @@ int imx_silicon_revision(void)
// 0x201D101D : mask set ID 1M55B or M55B
return CID;
}
void *imx_gpio_base[] = {
(void *)0x10015000,
(void *)0x10015100,
(void *)0x10015200,
(void *)0x10015300,
(void *)0x10015400,
(void *)0x10015500,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

30
arch/arm/mach-imx/imx25.c Normal file
View File

@ -0,0 +1,30 @@
/*
* 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 "gpio.h"
void *imx_gpio_base[] = {
(void *)0x53fcc000,
(void *)0x53fd0000,
(void *)0x53fa4000,
(void *)0x53f9c000,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

15
arch/arm/mach-imx/imx27.c
View File

@ -18,8 +18,21 @@
#include <common.h>
#include <mach/imx-regs.h>
#include "gpio.h"
int imx_silicon_revision(void)
{
return CID >> 28;
return CID >> 28;
}
void *imx_gpio_base[] = {
(void *)0x10015000,
(void *)0x10015100,
(void *)0x10015200,
(void *)0x10015300,
(void *)0x10015400,
(void *)0x10015500,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

29
arch/arm/mach-imx/imx31.c Normal file
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@ -0,0 +1,29 @@
/*
* 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 "gpio.h"
void *imx_gpio_base[] = {
(void *)0x53fcc000,
(void *)0x53fd0000,
(void *)0x53fa4000,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

29
arch/arm/mach-imx/imx35.c Normal file
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@ -0,0 +1,29 @@
/*
* 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 "gpio.h"
void *imx_gpio_base[] = {
(void *)0x53fcc000,
(void *)0x53fd0000,
(void *)0x53fa4000,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

30
arch/arm/mach-imx/imx51.c Normal file
View File

@ -0,0 +1,30 @@
/*
* 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 "gpio.h"
void *imx_gpio_base[] = {
(void *)0x87f84000,
(void *)0x73f88000,
(void *)0x73f8c000,
(void *)0x73f90000,
};
int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;

1
arch/arm/mach-imx/include/mach/gpio.h
View File

@ -3,6 +3,7 @@
void imx_gpio_mode(int gpio_mode);
void gpio_set_value(unsigned gpio, int value);
int gpio_get_value(unsigned gpio);
int gpio_direction_output(unsigned gpio, int value);
int gpio_direction_input(unsigned gpio);

25
arch/arm/mach-imx/include/mach/imx-regs.h
View File

@ -55,31 +55,6 @@
# error "unknown i.MX soc type"
#endif
/*
* GPIO Module and I/O Multiplexer
* x = 0..3 for reg_A, reg_B, reg_C, reg_D
*
* i.MX1 and i.MXL: 0 <= x <= 3
* i.MX27 : 0 <= x <= 5
*/
#define DDIR(x) __REG2(IMX_GPIO_BASE + 0x00, ((x) & 7) << 8)
#define OCR1(x) __REG2(IMX_GPIO_BASE + 0x04, ((x) & 7) << 8)
#define OCR2(x) __REG2(IMX_GPIO_BASE + 0x08, ((x) & 7) << 8)
#define ICONFA1(x) __REG2(IMX_GPIO_BASE + 0x0c, ((x) & 7) << 8)
#define ICONFA2(x) __REG2(IMX_GPIO_BASE + 0x10, ((x) & 7) << 8)
#define ICONFB1(x) __REG2(IMX_GPIO_BASE + 0x14, ((x) & 7) << 8)
#define ICONFB2(x) __REG2(IMX_GPIO_BASE + 0x18, ((x) & 7) << 8)
#define DR(x) __REG2(IMX_GPIO_BASE + 0x1c, ((x) & 7) << 8)
#define GIUS(x) __REG2(IMX_GPIO_BASE + 0x20, ((x) & 7) << 8)
#define SSR(x) __REG2(IMX_GPIO_BASE + 0x24, ((x) & 7) << 8)
#define ICR1(x) __REG2(IMX_GPIO_BASE + 0x28, ((x) & 7) << 8)
#define ICR2(x) __REG2(IMX_GPIO_BASE + 0x2c, ((x) & 7) << 8)
#define IMR(x) __REG2(IMX_GPIO_BASE + 0x30, ((x) & 7) << 8)
#define ISR(x) __REG2(IMX_GPIO_BASE + 0x34, ((x) & 7) << 8)
#define GPR(x) __REG2(IMX_GPIO_BASE + 0x38, ((x) & 7) << 8)
#define SWR(x) __REG2(IMX_GPIO_BASE + 0x3c, ((x) & 7) << 8)
#define PUEN(x) __REG2(IMX_GPIO_BASE + 0x40, ((x) & 7) << 8)
#define GPIO_PIN_MASK 0x1f
#define GPIO_PORT_SHIFT 5