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1/*
2 * Renesas USB driver R-Car Gen. 2 initialization and power control
3 *
4 * Copyright (C) 2014 Ulrich Hecht
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 */
12
13#include <linux/gpio.h>
14#include <linux/of_gpio.h>
15#include <linux/phy/phy.h>
16#include <linux/usb/phy.h>
17#include "common.h"
18#include "rcar2.h"
19
20static int usbhs_rcar2_hardware_init(struct platform_device *pdev)
21{
22 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
23
24 if (IS_ENABLED(CONFIG_GENERIC_PHY)) {
25 struct phy *phy = phy_get(&pdev->dev, "usb");
26
27 if (IS_ERR(phy))
28 return PTR_ERR(phy);
29
30 priv->phy = phy;
31 return 0;
32 }
33
34 if (IS_ENABLED(CONFIG_USB_PHY)) {
35 struct usb_phy *usb_phy = usb_get_phy_dev(&pdev->dev, 0);
36
37 if (IS_ERR(usb_phy))
38 return PTR_ERR(usb_phy);
39
40 priv->usb_phy = usb_phy;
41 return 0;
42 }
43
44 return -ENXIO;
45}
46
47static int usbhs_rcar2_hardware_exit(struct platform_device *pdev)
48{
49 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
50
51 if (priv->phy) {
52 phy_put(priv->phy);
53 priv->phy = NULL;
54 }
55
56 if (priv->usb_phy) {
57 usb_put_phy(priv->usb_phy);
58 priv->usb_phy = NULL;
59 }
60
61 return 0;
62}
63
64static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
65 void __iomem *base, int enable)
66{
67 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
68 int retval = -ENODEV;
69
70 if (priv->phy) {
71 if (enable) {
72 retval = phy_init(priv->phy);
73
74 if (!retval)
75 retval = phy_power_on(priv->phy);
76 } else {
77 phy_power_off(priv->phy);
78 phy_exit(priv->phy);
79 retval = 0;
80 }
81 }
82
83 if (priv->usb_phy) {
84 if (enable) {
85 retval = usb_phy_init(priv->usb_phy);
86
87 if (!retval)
88 retval = usb_phy_set_suspend(priv->usb_phy, 0);
89 } else {
90 usb_phy_set_suspend(priv->usb_phy, 1);
91 usb_phy_shutdown(priv->usb_phy);
92 retval = 0;
93 }
94 }
95
96 return retval;
97}
98
99static int usbhs_rcar2_get_id(struct platform_device *pdev)
100{
101 return USBHS_GADGET;
102}
103
104const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = {
105 .hardware_init = usbhs_rcar2_hardware_init,
106 .hardware_exit = usbhs_rcar2_hardware_exit,
107 .power_ctrl = usbhs_rcar2_power_ctrl,
108 .get_id = usbhs_rcar2_get_id,
109};
1// SPDX-License-Identifier: GPL-1.0+
2/*
3 * Renesas USB driver R-Car Gen. 2 initialization and power control
4 *
5 * Copyright (C) 2014 Ulrich Hecht
6 */
7
8#include <linux/gpio.h>
9#include <linux/of_gpio.h>
10#include <linux/phy/phy.h>
11#include <linux/usb/phy.h>
12#include "common.h"
13#include "rcar2.h"
14
15static int usbhs_rcar2_hardware_init(struct platform_device *pdev)
16{
17 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
18
19 if (IS_ENABLED(CONFIG_GENERIC_PHY)) {
20 struct phy *phy = phy_get(&pdev->dev, "usb");
21
22 if (IS_ERR(phy))
23 return PTR_ERR(phy);
24
25 priv->phy = phy;
26 return 0;
27 }
28
29 if (IS_ENABLED(CONFIG_USB_PHY)) {
30 struct usb_phy *usb_phy = usb_get_phy_dev(&pdev->dev, 0);
31
32 if (IS_ERR(usb_phy))
33 return PTR_ERR(usb_phy);
34
35 priv->usb_phy = usb_phy;
36 return 0;
37 }
38
39 return -ENXIO;
40}
41
42static int usbhs_rcar2_hardware_exit(struct platform_device *pdev)
43{
44 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
45
46 if (priv->phy) {
47 phy_put(priv->phy);
48 priv->phy = NULL;
49 }
50
51 if (priv->usb_phy) {
52 usb_put_phy(priv->usb_phy);
53 priv->usb_phy = NULL;
54 }
55
56 return 0;
57}
58
59static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
60 void __iomem *base, int enable)
61{
62 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
63 int retval = -ENODEV;
64
65 if (priv->phy) {
66 if (enable) {
67 retval = phy_init(priv->phy);
68
69 if (!retval)
70 retval = phy_power_on(priv->phy);
71 } else {
72 phy_power_off(priv->phy);
73 phy_exit(priv->phy);
74 retval = 0;
75 }
76 }
77
78 if (priv->usb_phy) {
79 if (enable) {
80 retval = usb_phy_init(priv->usb_phy);
81
82 if (!retval)
83 retval = usb_phy_set_suspend(priv->usb_phy, 0);
84 } else {
85 usb_phy_set_suspend(priv->usb_phy, 1);
86 usb_phy_shutdown(priv->usb_phy);
87 retval = 0;
88 }
89 }
90
91 return retval;
92}
93
94static int usbhs_rcar2_get_id(struct platform_device *pdev)
95{
96 return USBHS_GADGET;
97}
98
99const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = {
100 .hardware_init = usbhs_rcar2_hardware_init,
101 .hardware_exit = usbhs_rcar2_hardware_exit,
102 .power_ctrl = usbhs_rcar2_power_ctrl,
103 .get_id = usbhs_rcar2_get_id,
104};