1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * Core driver for Renesas Synchronization Management Unit (SMU) devices. |
4 | * |
5 | * Copyright (C) 2021 Integrated Device Technology, Inc., a Renesas Company. |
6 | */ |
7 | |
8 | #include <linux/init.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/mfd/core.h> |
11 | #include <linux/mfd/rsmu.h> |
12 | #include <linux/module.h> |
13 | #include <linux/of.h> |
14 | #include <linux/regmap.h> |
15 | #include <linux/slab.h> |
16 | |
17 | #include "rsmu.h" |
18 | |
19 | enum { |
20 | RSMU_PHC = 0, |
21 | RSMU_CDEV = 1, |
22 | RSMU_N_DEVS = 2, |
23 | }; |
24 | |
25 | static struct mfd_cell rsmu_cm_devs[] = { |
26 | [RSMU_PHC] = { |
27 | .name = "8a3400x-phc" , |
28 | }, |
29 | [RSMU_CDEV] = { |
30 | .name = "8a3400x-cdev" , |
31 | }, |
32 | }; |
33 | |
34 | static struct mfd_cell rsmu_sabre_devs[] = { |
35 | [RSMU_PHC] = { |
36 | .name = "82p33x1x-phc" , |
37 | }, |
38 | [RSMU_CDEV] = { |
39 | .name = "82p33x1x-cdev" , |
40 | }, |
41 | }; |
42 | |
43 | static struct mfd_cell rsmu_sl_devs[] = { |
44 | [RSMU_PHC] = { |
45 | .name = "8v19n85x-phc" , |
46 | }, |
47 | [RSMU_CDEV] = { |
48 | .name = "8v19n85x-cdev" , |
49 | }, |
50 | }; |
51 | |
52 | int rsmu_core_init(struct rsmu_ddata *rsmu) |
53 | { |
54 | struct mfd_cell *cells; |
55 | int ret; |
56 | |
57 | switch (rsmu->type) { |
58 | case RSMU_CM: |
59 | cells = rsmu_cm_devs; |
60 | break; |
61 | case RSMU_SABRE: |
62 | cells = rsmu_sabre_devs; |
63 | break; |
64 | case RSMU_SL: |
65 | cells = rsmu_sl_devs; |
66 | break; |
67 | default: |
68 | dev_err(rsmu->dev, "Unsupported RSMU device type: %d\n" , rsmu->type); |
69 | return -ENODEV; |
70 | } |
71 | |
72 | mutex_init(&rsmu->lock); |
73 | |
74 | ret = devm_mfd_add_devices(dev: rsmu->dev, PLATFORM_DEVID_AUTO, cells, |
75 | n_devs: RSMU_N_DEVS, NULL, irq_base: 0, NULL); |
76 | if (ret < 0) |
77 | dev_err(rsmu->dev, "Failed to register sub-devices: %d\n" , ret); |
78 | |
79 | return ret; |
80 | } |
81 | |
82 | void rsmu_core_exit(struct rsmu_ddata *rsmu) |
83 | { |
84 | mutex_destroy(lock: &rsmu->lock); |
85 | } |
86 | |
87 | MODULE_DESCRIPTION("Renesas SMU core driver" ); |
88 | MODULE_LICENSE("GPL" ); |
89 | |