mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-29 08:01:08 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
395 lines
8.8 KiB
C
395 lines
8.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* GPIO driver for TI DaVinci DA8xx SOCs.
|
|
*
|
|
* (C) Copyright 2011 Guralp Systems Ltd.
|
|
* Laurence Withers <lwithers@guralp.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/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];
|
|
|
|
#if defined(CONFIG_SOC_DA8XX)
|
|
#define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
|
|
|
|
#if defined(CONFIG_SOC_DA8XX) && !defined(CONFIG_SOC_DA850)
|
|
static const struct pinmux_config gpio_pinmux[] = {
|
|
{ pinmux(13), 8, 6 }, /* GP0[0] */
|
|
{ pinmux(13), 8, 7 },
|
|
{ pinmux(14), 8, 0 },
|
|
{ pinmux(14), 8, 1 },
|
|
{ pinmux(14), 8, 2 },
|
|
{ pinmux(14), 8, 3 },
|
|
{ pinmux(14), 8, 4 },
|
|
{ pinmux(14), 8, 5 },
|
|
{ pinmux(14), 8, 6 },
|
|
{ pinmux(14), 8, 7 },
|
|
{ pinmux(15), 8, 0 },
|
|
{ pinmux(15), 8, 1 },
|
|
{ pinmux(15), 8, 2 },
|
|
{ pinmux(15), 8, 3 },
|
|
{ pinmux(15), 8, 4 },
|
|
{ pinmux(15), 8, 5 },
|
|
{ pinmux(15), 8, 6 }, /* GP1[0] */
|
|
{ pinmux(15), 8, 7 },
|
|
{ pinmux(16), 8, 0 },
|
|
{ pinmux(16), 8, 1 },
|
|
{ pinmux(16), 8, 2 },
|
|
{ pinmux(16), 8, 3 },
|
|
{ pinmux(16), 8, 4 },
|
|
{ pinmux(16), 8, 5 },
|
|
{ pinmux(16), 8, 6 },
|
|
{ pinmux(16), 8, 7 },
|
|
{ pinmux(17), 8, 0 },
|
|
{ pinmux(17), 8, 1 },
|
|
{ pinmux(17), 8, 2 },
|
|
{ pinmux(17), 8, 3 },
|
|
{ pinmux(17), 8, 4 },
|
|
{ pinmux(17), 8, 5 },
|
|
{ pinmux(17), 8, 6 }, /* GP2[0] */
|
|
{ pinmux(17), 8, 7 },
|
|
{ pinmux(18), 8, 0 },
|
|
{ pinmux(18), 8, 1 },
|
|
{ pinmux(18), 8, 2 },
|
|
{ pinmux(18), 8, 3 },
|
|
{ pinmux(18), 8, 4 },
|
|
{ pinmux(18), 8, 5 },
|
|
{ pinmux(18), 8, 6 },
|
|
{ pinmux(18), 8, 7 },
|
|
{ pinmux(19), 8, 0 },
|
|
{ pinmux(9), 8, 2 },
|
|
{ pinmux(9), 8, 3 },
|
|
{ pinmux(9), 8, 4 },
|
|
{ pinmux(9), 8, 5 },
|
|
{ pinmux(9), 8, 6 },
|
|
{ pinmux(10), 8, 1 }, /* GP3[0] */
|
|
{ pinmux(10), 8, 2 },
|
|
{ pinmux(10), 8, 3 },
|
|
{ pinmux(10), 8, 4 },
|
|
{ pinmux(10), 8, 5 },
|
|
{ pinmux(10), 8, 6 },
|
|
{ pinmux(10), 8, 7 },
|
|
{ pinmux(11), 8, 0 },
|
|
{ pinmux(11), 8, 1 },
|
|
{ pinmux(11), 8, 2 },
|
|
{ pinmux(11), 8, 3 },
|
|
{ pinmux(11), 8, 4 },
|
|
{ pinmux(9), 8, 7 },
|
|
{ pinmux(2), 8, 6 },
|
|
{ pinmux(11), 8, 5 },
|
|
{ pinmux(11), 8, 6 },
|
|
{ pinmux(12), 8, 4 }, /* GP4[0] */
|
|
{ pinmux(12), 8, 5 },
|
|
{ pinmux(12), 8, 6 },
|
|
{ pinmux(12), 8, 7 },
|
|
{ pinmux(13), 8, 0 },
|
|
{ pinmux(13), 8, 1 },
|
|
{ pinmux(13), 8, 2 },
|
|
{ pinmux(13), 8, 3 },
|
|
{ pinmux(13), 8, 4 },
|
|
{ pinmux(13), 8, 5 },
|
|
{ pinmux(11), 8, 7 },
|
|
{ pinmux(12), 8, 0 },
|
|
{ pinmux(12), 8, 1 },
|
|
{ pinmux(12), 8, 2 },
|
|
{ pinmux(12), 8, 3 },
|
|
{ pinmux(9), 8, 1 },
|
|
{ pinmux(7), 8, 3 }, /* GP5[0] */
|
|
{ pinmux(7), 8, 4 },
|
|
{ pinmux(7), 8, 5 },
|
|
{ pinmux(7), 8, 6 },
|
|
{ pinmux(7), 8, 7 },
|
|
{ pinmux(8), 8, 0 },
|
|
{ pinmux(8), 8, 1 },
|
|
{ pinmux(8), 8, 2 },
|
|
{ pinmux(8), 8, 3 },
|
|
{ pinmux(8), 8, 4 },
|
|
{ pinmux(8), 8, 5 },
|
|
{ pinmux(8), 8, 6 },
|
|
{ pinmux(8), 8, 7 },
|
|
{ pinmux(9), 8, 0 },
|
|
{ pinmux(7), 8, 1 },
|
|
{ pinmux(7), 8, 2 },
|
|
{ pinmux(5), 8, 1 }, /* GP6[0] */
|
|
{ pinmux(5), 8, 2 },
|
|
{ pinmux(5), 8, 3 },
|
|
{ pinmux(5), 8, 4 },
|
|
{ pinmux(5), 8, 5 },
|
|
{ pinmux(5), 8, 6 },
|
|
{ pinmux(5), 8, 7 },
|
|
{ pinmux(6), 8, 0 },
|
|
{ pinmux(6), 8, 1 },
|
|
{ pinmux(6), 8, 2 },
|
|
{ pinmux(6), 8, 3 },
|
|
{ pinmux(6), 8, 4 },
|
|
{ pinmux(6), 8, 5 },
|
|
{ pinmux(6), 8, 6 },
|
|
{ pinmux(6), 8, 7 },
|
|
{ pinmux(7), 8, 0 },
|
|
{ pinmux(1), 8, 0 }, /* GP7[0] */
|
|
{ pinmux(1), 8, 1 },
|
|
{ pinmux(1), 8, 2 },
|
|
{ pinmux(1), 8, 3 },
|
|
{ pinmux(1), 8, 4 },
|
|
{ pinmux(1), 8, 5 },
|
|
{ pinmux(1), 8, 6 },
|
|
{ pinmux(1), 8, 7 },
|
|
{ pinmux(2), 8, 0 },
|
|
{ pinmux(2), 8, 1 },
|
|
{ pinmux(2), 8, 2 },
|
|
{ pinmux(2), 8, 3 },
|
|
{ pinmux(2), 8, 4 },
|
|
{ pinmux(2), 8, 5 },
|
|
{ pinmux(0), 1, 0 },
|
|
{ pinmux(0), 1, 1 },
|
|
};
|
|
#else /* CONFIG_SOC_DA8XX && CONFIG_SOC_DA850 */
|
|
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 },
|
|
};
|
|
#endif /* CONFIG_SOC_DA8XX && !CONFIG_SOC_DA850 */
|
|
#else /* !CONFIG_SOC_DA8XX */
|
|
#define davinci_configure_pin_mux(a, b)
|
|
#endif /* CONFIG_SOC_DA8XX */
|
|
|
|
int gpio_request(unsigned gpio, const char *label)
|
|
{
|
|
if (gpio >= MAX_NUM_GPIOS)
|
|
return -1;
|
|
|
|
if (gpio_registry[gpio].is_registered)
|
|
return -1;
|
|
|
|
gpio_registry[gpio].is_registered = 1;
|
|
strncpy(gpio_registry[gpio].name, label, GPIO_NAME_SIZE);
|
|
gpio_registry[gpio].name[GPIO_NAME_SIZE - 1] = 0;
|
|
|
|
davinci_configure_pin_mux(&gpio_pinmux[gpio], 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int gpio_free(unsigned gpio)
|
|
{
|
|
if (gpio >= MAX_NUM_GPIOS)
|
|
return -1;
|
|
|
|
if (!gpio_registry[gpio].is_registered)
|
|
return -1;
|
|
|
|
gpio_registry[gpio].is_registered = 0;
|
|
gpio_registry[gpio].name[0] = '\0';
|
|
/* Do not configure as input or change pin mux here */
|
|
return 0;
|
|
}
|
|
|
|
int gpio_direction_input(unsigned gpio)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gpio);
|
|
setbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
|
|
return 0;
|
|
}
|
|
|
|
int gpio_direction_output(unsigned gpio, int value)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gpio);
|
|
clrbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
|
|
gpio_set_value(gpio, value);
|
|
return 0;
|
|
}
|
|
|
|
int gpio_get_value(unsigned gpio)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
unsigned int ip;
|
|
|
|
bank = GPIO_BANK(gpio);
|
|
ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gpio));
|
|
return ip ? 1 : 0;
|
|
}
|
|
|
|
int gpio_set_value(unsigned gpio, int value)
|
|
{
|
|
struct davinci_gpio *bank;
|
|
|
|
bank = GPIO_BANK(gpio);
|
|
|
|
if (value)
|
|
bank->set_data = 1U << GPIO_BIT(gpio);
|
|
else
|
|
bank->clr_data = 1U << GPIO_BIT(gpio);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void gpio_info(void)
|
|
{
|
|
unsigned gpio, dir, val;
|
|
struct davinci_gpio *bank;
|
|
|
|
for (gpio = 0; gpio < MAX_NUM_GPIOS; ++gpio) {
|
|
bank = GPIO_BANK(gpio);
|
|
dir = in_le32(&bank->dir) & (1U << GPIO_BIT(gpio));
|
|
val = gpio_get_value(gpio);
|
|
|
|
printf("% 4d: %s: %d [%c] %s\n",
|
|
gpio, dir ? " in" : "out", val,
|
|
gpio_registry[gpio].is_registered ? 'x' : ' ',
|
|
gpio_registry[gpio].name);
|
|
}
|
|
}
|