// 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);