1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Intel(R) Trace Hub ACPI driver |
4 | * |
5 | * Copyright (C) 2017 Intel Corporation. |
6 | */ |
7 | |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
9 | |
10 | #include <linux/types.h> |
11 | #include <linux/module.h> |
12 | #include <linux/device.h> |
13 | #include <linux/sysfs.h> |
14 | #include <linux/platform_device.h> |
15 | #include <linux/acpi.h> |
16 | |
17 | #include "intel_th.h" |
18 | |
19 | #define DRIVER_NAME "intel_th_acpi" |
20 | |
21 | static const struct intel_th_drvdata intel_th_acpi_pch = { |
22 | .host_mode_only = 1, |
23 | }; |
24 | |
25 | static const struct intel_th_drvdata intel_th_acpi_uncore = { |
26 | .host_mode_only = 1, |
27 | }; |
28 | |
29 | static const struct acpi_device_id intel_th_acpi_ids[] = { |
30 | { "INTC1000" , (kernel_ulong_t)&intel_th_acpi_uncore }, |
31 | { "INTC1001" , (kernel_ulong_t)&intel_th_acpi_pch }, |
32 | { "" , 0 }, |
33 | }; |
34 | |
35 | MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids); |
36 | |
37 | static int intel_th_acpi_probe(struct platform_device *pdev) |
38 | { |
39 | struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); |
40 | struct resource resource[TH_MMIO_END]; |
41 | const struct acpi_device_id *id; |
42 | struct intel_th *th; |
43 | int i, r; |
44 | |
45 | id = acpi_match_device(ids: intel_th_acpi_ids, dev: &pdev->dev); |
46 | if (!id) |
47 | return -ENODEV; |
48 | |
49 | for (i = 0, r = 0; i < pdev->num_resources && r < TH_MMIO_END; i++) |
50 | if (pdev->resource[i].flags & |
51 | (IORESOURCE_IRQ | IORESOURCE_MEM)) |
52 | resource[r++] = pdev->resource[i]; |
53 | |
54 | th = intel_th_alloc(dev: &pdev->dev, drvdata: (void *)id->driver_data, devres: resource, ndevres: r); |
55 | if (IS_ERR(ptr: th)) |
56 | return PTR_ERR(ptr: th); |
57 | |
58 | adev->driver_data = th; |
59 | |
60 | return 0; |
61 | } |
62 | |
63 | static int intel_th_acpi_remove(struct platform_device *pdev) |
64 | { |
65 | struct intel_th *th = platform_get_drvdata(pdev); |
66 | |
67 | intel_th_free(th); |
68 | |
69 | return 0; |
70 | } |
71 | |
72 | static struct platform_driver intel_th_acpi_driver = { |
73 | .probe = intel_th_acpi_probe, |
74 | .remove = intel_th_acpi_remove, |
75 | .driver = { |
76 | .name = DRIVER_NAME, |
77 | .acpi_match_table = intel_th_acpi_ids, |
78 | }, |
79 | }; |
80 | |
81 | module_platform_driver(intel_th_acpi_driver); |
82 | |
83 | MODULE_LICENSE("GPL v2" ); |
84 | MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver" ); |
85 | MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>" ); |
86 | |