1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2006
4 * Markus Klotzbuecher, DENX Software Engineering <mk@denx.de>
5 */
6
7 #include <common.h>
8 #include <linux/delay.h>
9
10 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
11 # if defined(CONFIG_CPU_MONAHANS) || defined(CONFIG_CPU_PXA27X)
12
13 #include <asm/arch/pxa-regs.h>
14 #include <asm/io.h>
15 #include <usb.h>
16
usb_cpu_init(void)17 int usb_cpu_init(void)
18 {
19 #if defined(CONFIG_CPU_MONAHANS)
20 /* Enable USB host clock. */
21 writel(readl(CKENA) | CKENA_2_USBHOST | CKENA_20_UDC, CKENA);
22 udelay(100);
23 #endif
24 #if defined(CONFIG_CPU_PXA27X)
25 /* Enable USB host clock. */
26 writel(readl(CKEN) | CKEN10_USBHOST, CKEN);
27 #endif
28
29 #if defined(CONFIG_CPU_MONAHANS)
30 /* Configure Port 2 for Host (USB Client Registers) */
31 writel(0x3000c, UP2OCR);
32 #endif
33
34 writel(readl(UHCHR) | UHCHR_FHR, UHCHR);
35 mdelay(11);
36 writel(readl(UHCHR) & ~UHCHR_FHR, UHCHR);
37
38 writel(readl(UHCHR) | UHCHR_FSBIR, UHCHR);
39 while (readl(UHCHR) & UHCHR_FSBIR)
40 udelay(1);
41
42 #if defined(CONFIG_CPU_MONAHANS) || defined(CONFIG_PXA27X)
43 writel(readl(UHCHR) & ~UHCHR_SSEP0, UHCHR);
44 #endif
45 #if defined(CONFIG_CPU_PXA27X)
46 writel(readl(UHCHR) & ~UHCHR_SSEP2, UHCHR);
47 #endif
48 writel(readl(UHCHR) & ~(UHCHR_SSEP1 | UHCHR_SSE), UHCHR);
49
50 return 0;
51 }
52
usb_cpu_stop(void)53 int usb_cpu_stop(void)
54 {
55 writel(readl(UHCHR) | UHCHR_FHR, UHCHR);
56 udelay(11);
57 writel(readl(UHCHR) & ~UHCHR_FHR, UHCHR);
58
59 writel(readl(UHCCOMS) | UHCCOMS_HCR, UHCCOMS);
60 udelay(10);
61
62 #if defined(CONFIG_CPU_MONAHANS) || defined(CONFIG_PXA27X)
63 writel(readl(UHCHR) | UHCHR_SSEP0, UHCHR);
64 #endif
65 #if defined(CONFIG_CPU_PXA27X)
66 writel(readl(UHCHR) | UHCHR_SSEP2, UHCHR);
67 #endif
68 writel(readl(UHCHR) | UHCHR_SSEP1 | UHCHR_SSE, UHCHR);
69
70 #if defined(CONFIG_CPU_MONAHANS)
71 /* Disable USB host clock. */
72 writel(readl(CKENA) & ~(CKENA_2_USBHOST | CKENA_20_UDC), CKENA);
73 udelay(100);
74 #endif
75 #if defined(CONFIG_CPU_PXA27X)
76 /* Disable USB host clock. */
77 writel(readl(CKEN) & ~CKEN10_USBHOST, CKEN);
78 #endif
79
80 return 0;
81 }
82
usb_cpu_init_fail(void)83 int usb_cpu_init_fail(void)
84 {
85 return usb_cpu_stop();
86 }
87
88 # endif /* defined(CONFIG_CPU_MONAHANS) || defined(CONFIG_CPU_PXA27X) */
89 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
90