1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Link Layer for Samsung S3FWRN5 NCI based Driver
4 *
5 * Copyright (C) 2015 Samsung Electrnoics
6 * Robert Baldyga <r.baldyga@samsung.com>
7 * Copyright (C) 2020 Samsung Electrnoics
8 * Bongsu Jeon <bongsu.jeon@samsung.com>
9 */
10
11 #include <linux/gpio.h>
12 #include <linux/delay.h>
13 #include <linux/module.h>
14
15 #include "phy_common.h"
16
s3fwrn5_phy_set_wake(void * phy_id,bool wake)17 void s3fwrn5_phy_set_wake(void *phy_id, bool wake)
18 {
19 struct phy_common *phy = phy_id;
20
21 mutex_lock(&phy->mutex);
22 gpio_set_value(phy->gpio_fw_wake, wake);
23 if (wake)
24 msleep(S3FWRN5_EN_WAIT_TIME);
25 mutex_unlock(&phy->mutex);
26 }
27 EXPORT_SYMBOL(s3fwrn5_phy_set_wake);
28
s3fwrn5_phy_power_ctrl(struct phy_common * phy,enum s3fwrn5_mode mode)29 bool s3fwrn5_phy_power_ctrl(struct phy_common *phy, enum s3fwrn5_mode mode)
30 {
31 if (phy->mode == mode)
32 return false;
33
34 phy->mode = mode;
35
36 gpio_set_value(phy->gpio_en, 1);
37 gpio_set_value(phy->gpio_fw_wake, 0);
38 if (mode == S3FWRN5_MODE_FW)
39 gpio_set_value(phy->gpio_fw_wake, 1);
40
41 if (mode != S3FWRN5_MODE_COLD) {
42 msleep(S3FWRN5_EN_WAIT_TIME);
43 gpio_set_value(phy->gpio_en, 0);
44 msleep(S3FWRN5_EN_WAIT_TIME);
45 }
46
47 return true;
48 }
49 EXPORT_SYMBOL(s3fwrn5_phy_power_ctrl);
50
s3fwrn5_phy_set_mode(void * phy_id,enum s3fwrn5_mode mode)51 void s3fwrn5_phy_set_mode(void *phy_id, enum s3fwrn5_mode mode)
52 {
53 struct phy_common *phy = phy_id;
54
55 mutex_lock(&phy->mutex);
56
57 s3fwrn5_phy_power_ctrl(phy, mode);
58
59 mutex_unlock(&phy->mutex);
60 }
61 EXPORT_SYMBOL(s3fwrn5_phy_set_mode);
62
s3fwrn5_phy_get_mode(void * phy_id)63 enum s3fwrn5_mode s3fwrn5_phy_get_mode(void *phy_id)
64 {
65 struct phy_common *phy = phy_id;
66 enum s3fwrn5_mode mode;
67
68 mutex_lock(&phy->mutex);
69
70 mode = phy->mode;
71
72 mutex_unlock(&phy->mutex);
73
74 return mode;
75 }
76 EXPORT_SYMBOL(s3fwrn5_phy_get_mode);
77