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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi_device.h>
#include <acpi/acpigen.h>
#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include <device/spi.h>
#include <spi-generic.h>
#include <string.h>
#include "chip.h"
static int spi_acpi_get_bus(const struct device *dev)
{
struct device *spi_dev;
struct device_operations *ops;
if (!dev->bus || !dev->bus->dev)
return -1;
spi_dev = dev->bus->dev;
ops = spi_dev->ops;
if (ops && ops->ops_spi_bus && ops->ops_spi_bus->dev_to_bus)
return ops->ops_spi_bus->dev_to_bus(spi_dev);
return -1;
}
static int write_gpio(struct acpi_gpio *gpio, int *curr_index)
{
int ret = -1;
if (gpio->pin_count == 0)
return ret;
acpi_device_write_gpio(gpio);
ret = *curr_index;
(*curr_index)++;
return ret;
}
static void nxp_uwb_fill_ssdt(const struct device *dev)
{
struct drivers_nxp_uwb_config *config = dev->chip_info;
const char *scope = acpi_device_scope(dev);
const char *path = acpi_device_path(dev);
struct acpi_spi spi = {
.device_select = dev->path.spi.cs,
.speed = config->speed ? : 1 * MHz,
.resource = scope,
.device_select_polarity = SPI_POLARITY_LOW,
.wire_mode = SPI_4_WIRE_MODE,
.data_bit_length = 8,
.clock_phase = SPI_CLOCK_PHASE_FIRST,
.clock_polarity = SPI_POLARITY_LOW,
};
int curr_index = 0;
int irq_gpio_index = -1;
int ce_gpio_index = -1;
int ri_gpio_index = -1;
if (!scope)
return;
if (spi_acpi_get_bus(dev) == -1) {
printk(BIOS_ERR, "%s: Cannot get bus for device.\n",
dev_path(dev));
return;
}
/* Device */
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", ACPI_DT_NAMESPACE_HID);
acpigen_write_name_integer("_UID", config->uid);
if (config->desc)
acpigen_write_name_string("_DDN", config->desc);
acpigen_write_STA(acpi_device_status(dev));
/* Resources */
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpi_device_write_spi(&spi);
irq_gpio_index = write_gpio(&config->irq_gpio, &curr_index);
ce_gpio_index = write_gpio(&config->ce_gpio, &curr_index);
ri_gpio_index = write_gpio(&config->ri_gpio, &curr_index);
acpigen_write_resourcetemplate_footer();
struct acpi_dp *dsd = acpi_dp_new_table("_DSD");
acpi_dp_add_string(dsd, "compatible", "nxp,sr1xx");
acpi_dp_add_gpio(dsd, "nxp,sr1xx-irq-gpios", path, irq_gpio_index, 0,
config->irq_gpio.active_low);
acpi_dp_add_gpio(dsd, "nxp,sr1xx-ce-gpios", path, ce_gpio_index, 0,
config->ce_gpio.active_low);
acpi_dp_add_gpio(dsd, "nxp,sr1xx-ri-gpios", path, ri_gpio_index, 0,
config->ri_gpio.active_low);
acpi_dp_write(dsd);
acpigen_write_device_end();
acpigen_write_scope_end();
printk(BIOS_INFO, "%s: %s at %s\n", path,
config->desc ? : dev->chip_ops->name, dev_path(dev));
}
static const char *nxp_uwb_name(const struct device *dev)
{
struct drivers_nxp_uwb_config *config = dev->chip_info;
static char name[ACPI_NAME_BUFFER_SIZE];
if (config->name)
snprintf(name, sizeof(name), "%s", config->name);
else
snprintf(name, sizeof(name), "UWB%1X", spi_acpi_get_bus(dev));
name[4] = '\0';
return name;
}
static struct device_operations nxp_uwb_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = nxp_uwb_name,
.acpi_fill_ssdt = nxp_uwb_fill_ssdt,
};
static void nxb_uwb_enable(struct device *dev)
{
dev->ops = &nxp_uwb_ops;
}
struct chip_operations drivers_nxp_uwb_ops = {
.name = "NXP UWB Device",
.enable_dev = nxb_uwb_enable
};
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