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d4d96990 AS |
1 | /* |
2 | * Bluetooth platform data initialization file | |
3 | * | |
4 | * (C) Copyright 2017 Intel Corporation | |
5 | * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; version 2 | |
10 | * of the License. | |
11 | */ | |
12 | ||
13 | #include <linux/gpio/machine.h> | |
14 | #include <linux/pci.h> | |
15 | #include <linux/platform_device.h> | |
16 | ||
17 | #include <asm/cpu_device_id.h> | |
18 | #include <asm/intel-family.h> | |
19 | #include <asm/intel-mid.h> | |
20 | ||
21 | struct bt_sfi_data { | |
22 | struct device *dev; | |
23 | const char *name; | |
24 | int (*setup)(struct bt_sfi_data *ddata); | |
25 | }; | |
26 | ||
27 | static struct gpiod_lookup_table tng_bt_sfi_gpio_table = { | |
28 | .dev_id = "hci_bcm", | |
29 | .table = { | |
30 | GPIO_LOOKUP("0000:00:0c.0", -1, "device-wakeup", GPIO_ACTIVE_HIGH), | |
31 | GPIO_LOOKUP("0000:00:0c.0", -1, "shutdown", GPIO_ACTIVE_HIGH), | |
32 | GPIO_LOOKUP("0000:00:0c.0", -1, "host-wakeup", GPIO_ACTIVE_HIGH), | |
33 | { }, | |
34 | }, | |
35 | }; | |
36 | ||
37 | #define TNG_BT_SFI_GPIO_DEVICE_WAKEUP "bt_wakeup" | |
38 | #define TNG_BT_SFI_GPIO_SHUTDOWN "BT-reset" | |
39 | #define TNG_BT_SFI_GPIO_HOST_WAKEUP "bt_uart_enable" | |
40 | ||
41 | static int __init tng_bt_sfi_setup(struct bt_sfi_data *ddata) | |
42 | { | |
43 | struct gpiod_lookup_table *table = &tng_bt_sfi_gpio_table; | |
44 | struct gpiod_lookup *lookup = table->table; | |
45 | struct pci_dev *pdev; | |
46 | ||
47 | /* Connected to /dev/ttyS0 */ | |
48 | pdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(4, 1)); | |
49 | if (!pdev) | |
50 | return -ENODEV; | |
51 | ||
52 | ddata->dev = &pdev->dev; | |
53 | ddata->name = table->dev_id; | |
54 | ||
55 | lookup[0].chip_hwnum = get_gpio_by_name(TNG_BT_SFI_GPIO_DEVICE_WAKEUP); | |
56 | lookup[1].chip_hwnum = get_gpio_by_name(TNG_BT_SFI_GPIO_SHUTDOWN); | |
57 | lookup[2].chip_hwnum = get_gpio_by_name(TNG_BT_SFI_GPIO_HOST_WAKEUP); | |
58 | ||
59 | gpiod_add_lookup_table(table); | |
60 | return 0; | |
61 | } | |
62 | ||
9d0513d8 | 63 | static struct bt_sfi_data tng_bt_sfi_data __initdata = { |
d4d96990 AS |
64 | .setup = tng_bt_sfi_setup, |
65 | }; | |
66 | ||
67 | #define ICPU(model, ddata) \ | |
68 | { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (kernel_ulong_t)&ddata } | |
69 | ||
70 | static const struct x86_cpu_id bt_sfi_cpu_ids[] = { | |
2811e5d5 | 71 | ICPU(INTEL_FAM6_ATOM_SILVERMONT_MID, tng_bt_sfi_data), |
d4d96990 AS |
72 | {} |
73 | }; | |
74 | ||
75 | static int __init bt_sfi_init(void) | |
76 | { | |
77 | struct platform_device_info info; | |
78 | struct platform_device *pdev; | |
79 | const struct x86_cpu_id *id; | |
80 | struct bt_sfi_data *ddata; | |
81 | int ret; | |
82 | ||
83 | id = x86_match_cpu(bt_sfi_cpu_ids); | |
84 | if (!id) | |
85 | return -ENODEV; | |
86 | ||
87 | ddata = (struct bt_sfi_data *)id->driver_data; | |
88 | if (!ddata) | |
89 | return -ENODEV; | |
90 | ||
91 | ret = ddata->setup(ddata); | |
92 | if (ret) | |
93 | return ret; | |
94 | ||
95 | memset(&info, 0, sizeof(info)); | |
96 | info.fwnode = ddata->dev->fwnode; | |
97 | info.parent = ddata->dev; | |
98 | info.name = ddata->name, | |
99 | info.id = PLATFORM_DEVID_NONE, | |
100 | ||
101 | pdev = platform_device_register_full(&info); | |
102 | if (IS_ERR(pdev)) | |
103 | return PTR_ERR(pdev); | |
104 | ||
105 | dev_info(ddata->dev, "Registered Bluetooth device: %s\n", ddata->name); | |
106 | return 0; | |
107 | } | |
108 | device_initcall(bt_sfi_init); |