Commit | Line | Data |
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de18757e YS |
1 | /* |
2 | * Renesas USB driver R-Car Gen. 3 initialization and power control | |
3 | * | |
4 | * Copyright (C) 2016 Renesas Electronics Corporation | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/io.h> | |
13 | #include "common.h" | |
14 | #include "rcar3.h" | |
15 | ||
16 | #define LPSTS 0x102 | |
17 | #define UGCTRL2 0x184 /* 32-bit register */ | |
18 | ||
19 | /* Low Power Status register (LPSTS) */ | |
20 | #define LPSTS_SUSPM 0x4000 | |
21 | ||
22 | /* USB General control register 2 (UGCTRL2), bit[31:6] should be 0 */ | |
23 | #define UGCTRL2_RESERVED_3 0x00000001 /* bit[3:0] should be B'0001 */ | |
24 | #define UGCTRL2_USB0SEL_OTG 0x00000030 | |
25 | ||
107a4b53 | 26 | static void usbhs_write32(struct usbhs_priv *priv, u32 reg, u32 data) |
de18757e YS |
27 | { |
28 | iowrite32(data, priv->base + reg); | |
29 | } | |
30 | ||
31 | static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, | |
32 | void __iomem *base, int enable) | |
33 | { | |
34 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); | |
35 | ||
36 | usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG); | |
37 | ||
38 | if (enable) | |
39 | usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); | |
40 | else | |
41 | usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0); | |
42 | ||
43 | return 0; | |
44 | } | |
45 | ||
46 | static int usbhs_rcar3_get_id(struct platform_device *pdev) | |
47 | { | |
48 | return USBHS_GADGET; | |
49 | } | |
50 | ||
51 | const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = { | |
52 | .power_ctrl = usbhs_rcar3_power_ctrl, | |
53 | .get_id = usbhs_rcar3_get_id, | |
54 | }; |