leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
a2f0b504f4
u-boot/drivers/gpio/da8xx_gpio.c
Walter Lozano e3e2470fdd drivers: rename drivers to match compatible string 
When using OF_PLATDATA, the bind process between devices and drivers
is performed trying to match compatible string with driver names.
However driver names are not strictly defined, and also there are different
names used when declaring a driver with U_BOOT_DRIVER, the name of the
symbol used in the linker list and the used in the struct driver_info.

In order to make things a bit more clear, rename the drivers names. This
will also help for further OF_PLATDATA improvements, such as checking
for valid driver names.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a fix for sandbox of-platdata to avoid using an invalid ANSI colour:
Signed-off-by: Simon Glass <sjg@chromium.org>
2020-07-09 18:57:22 -06:00

569 lines
13 KiB
C
Raw Blame History

// 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 <dm.h>
#include <fdtdec.h>
#include <malloc.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <dt-bindings/gpio/gpio.h>
#include "da8xx_gpio.h"
#if !CONFIG_IS_ENABLED(DM_GPIO)
#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 int 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 int 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;
}
#endif
static int _gpio_direction_input(struct davinci_gpio *bank, unsigned int gpio)
{
setbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
return 0;
}
static int _gpio_get_value(struct davinci_gpio *bank, unsigned int gpio)
{
unsigned int ip;
ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gpio));
return ip ? 1 : 0;
}
static int _gpio_set_value(struct davinci_gpio *bank, unsigned int gpio, int value)
{
if (value)
bank->set_data = 1U << GPIO_BIT(gpio);
else
bank->clr_data = 1U << GPIO_BIT(gpio);
return 0;
}
static int _gpio_get_dir(struct davinci_gpio *bank, unsigned int gpio)
{
return in_le32(&bank->dir) & (1U << GPIO_BIT(gpio));
}
static int _gpio_direction_output(struct davinci_gpio *bank, unsigned int gpio,
int value)
{
clrbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
_gpio_set_value(bank, gpio, value);
return 0;
}
#if !CONFIG_IS_ENABLED(DM_GPIO)
void gpio_info(void)
{
unsigned int gpio, dir, val;
struct davinci_gpio *bank;
for (gpio = 0; gpio < MAX_NUM_GPIOS; ++gpio) {
bank = GPIO_BANK(gpio);
dir = _gpio_get_dir(bank, 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);
}
}
int gpio_direction_input(unsigned int gpio)
{
struct davinci_gpio *bank;
bank = GPIO_BANK(gpio);
return _gpio_direction_input(bank, gpio);
}
int gpio_direction_output(unsigned int gpio, int value)
{
struct davinci_gpio *bank;
bank = GPIO_BANK(gpio);
return _gpio_direction_output(bank, gpio, value);
}
int gpio_get_value(unsigned int gpio)
{
struct davinci_gpio *bank;
bank = GPIO_BANK(gpio);
return _gpio_get_value(bank, gpio);
}
int gpio_set_value(unsigned int gpio, int value)
{
struct davinci_gpio *bank;
bank = GPIO_BANK(gpio);
return _gpio_set_value(bank, gpio, value);
}
#else /* DM_GPIO */
static struct davinci_gpio *davinci_get_gpio_bank(struct udevice *dev, unsigned int offset)
{
struct davinci_gpio_bank *bank = dev_get_priv(dev);
unsigned long addr;
/*
* The device tree is not broken into banks but the infrastructure is
* expecting it this way, so we'll first include the 0x10 offset, then
* calculate the bank manually based on the offset.
* Casting 'addr' as Unsigned long is needed to make the math work.
*/
addr = ((unsigned long)(struct davinci_gpio *)bank->base) +
0x10 + (0x28 * (offset >> 5));
return (struct davinci_gpio *)addr;
}
static int davinci_gpio_direction_input(struct udevice *dev, unsigned int offset)
{
struct davinci_gpio *base = davinci_get_gpio_bank(dev, offset);
/*
* Fetch the address based on GPIO, but only pass the masked low 32-bits
*/
_gpio_direction_input(base, (offset & 0x1f));
return 0;
}
static int davinci_gpio_direction_output(struct udevice *dev, unsigned int offset,
int value)
{
struct davinci_gpio *base = davinci_get_gpio_bank(dev, offset);
_gpio_direction_output(base, (offset & 0x1f), value);
return 0;
}
static int davinci_gpio_get_value(struct udevice *dev, unsigned int offset)
{
struct davinci_gpio *base = davinci_get_gpio_bank(dev, offset);
return _gpio_get_value(base, (offset & 0x1f));
}
static int davinci_gpio_set_value(struct udevice *dev, unsigned int offset,
int value)
{
struct davinci_gpio *base = davinci_get_gpio_bank(dev, offset);
_gpio_set_value(base, (offset & 0x1f), value);
return 0;
}
static int davinci_gpio_get_function(struct udevice *dev, unsigned int offset)
{
unsigned int dir;
struct davinci_gpio *base = davinci_get_gpio_bank(dev, offset);
dir = _gpio_get_dir(base, offset);
if (dir)
return GPIOF_INPUT;
return GPIOF_OUTPUT;
}
static int davinci_gpio_xlate(struct udevice *dev, struct gpio_desc *desc,
struct ofnode_phandle_args *args)
{
desc->offset = args->args[0];
if (args->args[1] & GPIO_ACTIVE_LOW)
desc->flags = GPIOD_ACTIVE_LOW;
else
desc->flags = 0;
return 0;
}
static const struct dm_gpio_ops gpio_davinci_ops = {
.direction_input = davinci_gpio_direction_input,
.direction_output = davinci_gpio_direction_output,
.get_value = davinci_gpio_get_value,
.set_value = davinci_gpio_set_value,
.get_function = davinci_gpio_get_function,
.xlate = davinci_gpio_xlate,
};
static int davinci_gpio_probe(struct udevice *dev)
{
struct davinci_gpio_bank *bank = dev_get_priv(dev);
struct davinci_gpio_platdata *plat = dev_get_platdata(dev);
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
const void *fdt = gd->fdt_blob;
int node = dev_of_offset(dev);
uc_priv->bank_name = plat->port_name;
uc_priv->gpio_count = fdtdec_get_int(fdt, node, "ti,ngpio", -1);
bank->base = (struct davinci_gpio *)plat->base;
return 0;
}
static const struct udevice_id davinci_gpio_ids[] = {
{ .compatible = "ti,dm6441-gpio" },
{ .compatible = "ti,k2g-gpio" },
{ .compatible = "ti,keystone-gpio" },
{ }
};
static int davinci_gpio_ofdata_to_platdata(struct udevice *dev)
{
struct davinci_gpio_platdata *plat = dev_get_platdata(dev);
fdt_addr_t addr;
addr = devfdt_get_addr(dev);
if (addr == FDT_ADDR_T_NONE)
return -EINVAL;
plat->base = addr;
return 0;
}
U_BOOT_DRIVER(ti_dm6441_gpio) = {
.name = "ti_dm6441_gpio",
.id = UCLASS_GPIO,
.ops = &gpio_davinci_ops,
.ofdata_to_platdata = of_match_ptr(davinci_gpio_ofdata_to_platdata),
.of_match = davinci_gpio_ids,
.bind = dm_scan_fdt_dev,
.platdata_auto_alloc_size = sizeof(struct davinci_gpio_platdata),
.probe = davinci_gpio_probe,
.priv_auto_alloc_size = sizeof(struct davinci_gpio_bank),
};
#endif
Reference in New Issue View Git Blame Copy Permalink