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