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// SPDX-License-Identifier: GPL-2.0-only
/*
* Bluetooth platform data initialization file
*
* (C) Copyright 2017 Intel Corporation
* Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
*/
#include <linux/gpio/machine.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <asm/cpu_device_id.h>
#include <asm/intel-family.h>
#include <asm/intel-mid.h>
struct bt_sfi_data {
struct device *dev;
const char *name;
int (*setup)(struct bt_sfi_data *ddata);
};
static struct gpiod_lookup_table tng_bt_sfi_gpio_table = {
.dev_id = "hci_bcm",
.table = {
GPIO_LOOKUP("0000:00:0c.0", -1, "device-wakeup", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("0000:00:0c.0", -1, "shutdown", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("0000:00:0c.0", -1, "host-wakeup", GPIO_ACTIVE_HIGH),
{ },
},
};
#define TNG_BT_SFI_GPIO_DEVICE_WAKEUP "bt_wakeup"
#define TNG_BT_SFI_GPIO_SHUTDOWN "BT-reset"
#define TNG_BT_SFI_GPIO_HOST_WAKEUP "bt_uart_enable"
static int __init tng_bt_sfi_setup(struct bt_sfi_data *ddata)
{
struct gpiod_lookup_table *table = &tng_bt_sfi_gpio_table;
struct gpiod_lookup *lookup = table->table;
struct pci_dev *pdev;
/* Connected to /dev/ttyS0 */
pdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(4, 1));
if (!pdev)
return -ENODEV;
ddata->dev = &pdev->dev;
ddata->name = table->dev_id;
lookup[0].chip_hwnum = get_gpio_by_name(TNG_BT_SFI_GPIO_DEVICE_WAKEUP);
lookup[1].chip_hwnum = get_gpio_by_name(TNG_BT_SFI_GPIO_SHUTDOWN);
lookup[2].chip_hwnum = get_gpio_by_name(TNG_BT_SFI_GPIO_HOST_WAKEUP);
gpiod_add_lookup_table(table);
return 0;
}
static struct bt_sfi_data tng_bt_sfi_data __initdata = {
.setup = tng_bt_sfi_setup,
};
#define ICPU(model, ddata) \
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (kernel_ulong_t)&ddata }
static const struct x86_cpu_id bt_sfi_cpu_ids[] = {
ICPU(INTEL_FAM6_ATOM_SILVERMONT_MID, tng_bt_sfi_data),
{}
};
static int __init bt_sfi_init(void)
{
struct platform_device_info info;
struct platform_device *pdev;
const struct x86_cpu_id *id;
struct bt_sfi_data *ddata;
int ret;
id = x86_match_cpu(bt_sfi_cpu_ids);
if (!id)
return -ENODEV;
ddata = (struct bt_sfi_data *)id->driver_data;
if (!ddata)
return -ENODEV;
ret = ddata->setup(ddata);
if (ret)
return ret;
memset(&info, 0, sizeof(info));
info.fwnode = ddata->dev->fwnode;
info.parent = ddata->dev;
info.name = ddata->name,
info.id = PLATFORM_DEVID_NONE,
pdev = platform_device_register_full(&info);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
dev_info(ddata->dev, "Registered Bluetooth device: %s\n", ddata->name);
return 0;
}
device_initcall(bt_sfi_init);
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