mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +00:00
270 lines
6.1 KiB
C
270 lines
6.1 KiB
C
/*
|
|
* GPIO driver for TI DaVinci DA8xx SOCs.
|
|
*
|
|
* (C) Copyright 2011 Guralp Systems Ltd.
|
|
* Laurence Withers <lwithers@guralp.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/io.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/arch/gpio.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/davinci_misc.h>
|
|
|
|
static struct gpio_registry {
|
|
int is_registered;
|
|
char name[GPIO_NAME_SIZE];
|
|
} gpio_registry[MAX_NUM_GPIOS];
|
|
|
|
#define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
|
|
|
|
static const struct pinmux_config gpio_pinmux[] = {
|
|
{ pinmux(1), 8, 7 }, /* GP0[0] */
|
|
{ pinmux(1), 8, 6 },
|
|
{ pinmux(1), 8, 5 },
|
|
{ pinmux(1), 8, 4 },
|
|
{ pinmux(1), 8, 3 },
|
|
{ pinmux(1), 8, 2 },
|
|
{ pinmux(1), 8, 1 },
|
|
{ pinmux(1), 8, 0 },
|
|
{ pinmux(0), 8, 7 },
|
|
{ pinmux(0), 8, 6 },
|
|
{ pinmux(0), 8, 5 },
|
|
{ pinmux(0), 8, 4 },
|
|
{ pinmux(0), 8, 3 },
|
|
{ pinmux(0), 8, 2 },
|
|
{ pinmux(0), 8, 1 },
|
|
{ pinmux(0), 8, 0 },
|
|
{ pinmux(4), 8, 7 }, /* GP1[0] */
|
|
{ pinmux(4), 8, 6 },
|
|
{ pinmux(4), 8, 5 },
|
|
{ pinmux(4), 8, 4 },
|
|
{ pinmux(4), 8, 3 },
|
|
{ pinmux(4), 8, 2 },
|
|
{ pinmux(4), 4, 1 },
|
|
{ pinmux(4), 4, 0 },
|
|
{ pinmux(3), 4, 0 },
|
|
{ pinmux(2), 4, 6 },
|
|
{ pinmux(2), 4, 5 },
|
|
{ pinmux(2), 4, 4 },
|
|
{ pinmux(2), 4, 3 },
|
|
{ pinmux(2), 4, 2 },
|
|
{ pinmux(2), 4, 1 },
|
|
{ pinmux(2), 8, 0 },
|
|
{ pinmux(6), 8, 7 }, /* GP2[0] */
|
|
{ pinmux(6), 8, 6 },
|
|
{ pinmux(6), 8, 5 },
|
|
{ pinmux(6), 8, 4 },
|
|
{ pinmux(6), 8, 3 },
|
|
{ pinmux(6), 8, 2 },
|
|
{ pinmux(6), 8, 1 },
|
|
{ pinmux(6), 8, 0 },
|
|
{ pinmux(5), 8, 7 },
|
|
{ pinmux(5), 8, 6 },
|
|
{ pinmux(5), 8, 5 },
|
|
{ pinmux(5), 8, 4 },
|
|
{ pinmux(5), 8, 3 },
|
|
{ pinmux(5), 8, 2 },
|
|
{ pinmux(5), 8, 1 },
|
|
{ pinmux(5), 8, 0 },
|
|
{ pinmux(8), 8, 7 }, /* GP3[0] */
|
|
{ pinmux(8), 8, 6 },
|
|
{ pinmux(8), 8, 5 },
|
|
{ pinmux(8), 8, 4 },
|
|
{ pinmux(8), 8, 3 },
|
|
{ pinmux(8), 8, 2 },
|
|
{ pinmux(8), 8, 1 },
|
|
{ pinmux(8), 8, 0 },
|
|
{ pinmux(7), 8, 7 },
|
|
{ pinmux(7), 8, 6 },
|
|
{ pinmux(7), 8, 5 },
|
|
{ pinmux(7), 8, 4 },
|
|
{ pinmux(7), 8, 3 },
|
|
{ pinmux(7), 8, 2 },
|
|
{ pinmux(7), 8, 1 },
|
|
{ pinmux(7), 8, 0 },
|
|
{ pinmux(10), 8, 7 }, /* GP4[0] */
|
|
{ pinmux(10), 8, 6 },
|
|
{ pinmux(10), 8, 5 },
|
|
{ pinmux(10), 8, 4 },
|
|
{ pinmux(10), 8, 3 },
|
|
{ pinmux(10), 8, 2 },
|
|
{ pinmux(10), 8, 1 },
|
|
{ pinmux(10), 8, 0 },
|
|
{ pinmux(9), 8, 7 },
|
|
{ pinmux(9), 8, 6 },
|
|
{ pinmux(9), 8, 5 },
|
|
{ pinmux(9), 8, 4 },
|
|
{ pinmux(9), 8, 3 },
|
|
{ pinmux(9), 8, 2 },
|
|
{ pinmux(9), 8, 1 },
|
|
{ pinmux(9), 8, 0 },
|
|
{ pinmux(12), 8, 7 }, /* GP5[0] */
|
|
{ pinmux(12), 8, 6 },
|
|
{ pinmux(12), 8, 5 },
|
|
{ pinmux(12), 8, 4 },
|
|
{ pinmux(12), 8, 3 },
|
|
{ pinmux(12), 8, 2 },
|
|
{ pinmux(12), 8, 1 },
|
|
{ pinmux(12), 8, 0 },
|
|
{ pinmux(11), 8, 7 },
|
|
{ pinmux(11), 8, 6 },
|
|
{ pinmux(11), 8, 5 },
|
|
{ pinmux(11), 8, 4 },
|
|
{ pinmux(11), 8, 3 },
|
|
{ pinmux(11), 8, 2 },
|
|
{ pinmux(11), 8, 1 },
|
|
{ pinmux(11), 8, 0 },
|
|
{ pinmux(19), 8, 6 }, /* GP6[0] */
|
|
{ pinmux(19), 8, 5 },
|
|
{ pinmux(19), 8, 4 },
|
|
{ pinmux(19), 8, 3 },
|
|
{ pinmux(19), 8, 2 },
|
|
{ pinmux(16), 8, 1 },
|
|
{ pinmux(14), 8, 1 },
|
|
{ pinmux(14), 8, 0 },
|
|
{ pinmux(13), 8, 7 },
|
|
{ pinmux(13), 8, 6 },
|
|
{ pinmux(13), 8, 5 },
|
|
{ pinmux(13), 8, 4 },
|
|
{ pinmux(13), 8, 3 },
|
|
{ pinmux(13), 8, 2 },
|
|
{ pinmux(13), 8, 1 },
|
|
{ pinmux(13), 8, 0 },
|
|
{ pinmux(18), 8, 1 }, /* GP7[0] */
|
|
{ pinmux(18), 8, 0 },
|
|
{ pinmux(17), 8, 7 },
|
|
{ pinmux(17), 8, 6 },
|
|
{ pinmux(17), 8, 5 },
|
|
{ pinmux(17), 8, 4 },
|
|
{ pinmux(17), 8, 3 },
|
|
{ pinmux(17), 8, 2 },
|
|
{ pinmux(17), 8, 1 },
|
|
{ pinmux(17), 8, 0 },
|
|
{ pinmux(16), 8, 7 },
|
|
{ pinmux(16), 8, 6 },
|
|
{ pinmux(16), 8, 5 },
|
|
{ pinmux(16), 8, 4 },
|
|
{ pinmux(16), 8, 3 },
|
|
{ pinmux(16), 8, 2 },
|
|
{ pinmux(19), 8, 0 }, /* GP8[0] */
|
|
{ pinmux(3), 4, 7 },
|
|
{ pinmux(3), 4, 6 },
|
|
{ pinmux(3), 4, 5 },
|
|
{ pinmux(3), 4, 4 },
|
|
{ pinmux(3), 4, 3 },
|
|
{ pinmux(3), 4, 2 },
|
|
{ pinmux(2), 4, 7 },
|
|
{ pinmux(19), 8, 1 },
|
|
{ pinmux(19), 8, 0 },
|
|
{ pinmux(18), 8, 7 },
|
|
{ pinmux(18), 8, 6 },
|
|
{ pinmux(18), 8, 5 },
|
|
{ pinmux(18), 8, 4 },
|
|
{ pinmux(18), 8, 3 },
|
|
{ pinmux(18), 8, 2 },
|
|
};
|
|
|
|
int gpio_request(int gp, const char *label)
|
|
{
|
|
if (gp >= MAX_NUM_GPIOS)
|
|
return -1;
|
|
|
|
if (gpio_registry[gp].is_registered)
|
|
return -1;
|
|
|
|
gpio_registry[gp].is_registered = 1;
|
|
strncpy(gpio_registry[gp].name, label, GPIO_NAME_SIZE);
|
|
gpio_registry[gp].name[GPIO_NAME_SIZE - 1] = 0;
|
|
|
|
davinci_configure_pin_mux(&gpio_pinmux[gp], 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void gpio_free(int gp)
|
|
{
|
|
gpio_registry[gp].is_registered = 0;
|
|
}
|
|
|
|
void gpio_toggle_value(int gp)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gp);
|
|
gpio_set_value(gp, !gpio_get_value(gp));
|
|
}
|
|
|
|
int gpio_direction_input(int gp)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gp);
|
|
setbits_le32(&bank->dir, 1U << GPIO_BIT(gp));
|
|
return 0;
|
|
}
|
|
|
|
int gpio_direction_output(int gp, int value)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gp);
|
|
clrbits_le32(&bank->dir, 1U << GPIO_BIT(gp));
|
|
gpio_set_value(gp, value);
|
|
return 0;
|
|
}
|
|
|
|
int gpio_get_value(int gp)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
unsigned int ip;
|
|
|
|
bank = GPIO_BANK(gp);
|
|
ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gp));
|
|
return ip ? 1 : 0;
|
|
}
|
|
|
|
void gpio_set_value(int gp, int value)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gp);
|
|
|
|
if (value)
|
|
bank->set_data = 1U << GPIO_BIT(gp);
|
|
else
|
|
bank->clr_data = 1U << GPIO_BIT(gp);
|
|
}
|
|
|
|
void gpio_info(void)
|
|
{
|
|
int gp, dir, val;
|
|
struct davinci_gpio *bank;
|
|
|
|
for (gp = 0; gp < MAX_NUM_GPIOS; ++gp) {
|
|
bank = GPIO_BANK(gp);
|
|
dir = in_le32(&bank->dir) & (1U << GPIO_BIT(gp));
|
|
val = gpio_get_value(gp);
|
|
|
|
printf("% 4d: %s: %d [%c] %s\n",
|
|
gp, dir ? " in" : "out", val,
|
|
gpio_registry[gp].is_registered ? 'x' : ' ',
|
|
gpio_registry[gp].name);
|
|
}
|
|
}
|