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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Bo Shencc30b782012-06-27 21:58:20 +00002/*
3 * (C) Copyright 2012
4 * Atmel Semiconductor <www.atmel.com>
5 * Written-by: Bo Shen <voice.shen@atmel.com>
Bo Shencc30b782012-06-27 21:58:20 +00006 */
7
8#include <common.h>
Wenyou Yang17b68b52016-08-05 08:57:35 +08009#include <clk.h>
10#include <dm.h>
Bo Shencc30b782012-06-27 21:58:20 +000011#include <usb.h>
12#include <asm/io.h>
Bo Shencc30b782012-06-27 21:58:20 +000013#include <asm/arch/clk.h>
14
15#include "ehci.h"
Bo Shencc30b782012-06-27 21:58:20 +000016
Sven Schwermerfd09c202018-11-21 08:43:56 +010017#if !CONFIG_IS_ENABLED(DM_USB)
Wenyou Yang17b68b52016-08-05 08:57:35 +080018
Troy Kisky127efc42013-10-10 15:27:57 -070019int ehci_hcd_init(int index, enum usb_init_type init,
20 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
Bo Shencc30b782012-06-27 21:58:20 +000021{
Bo Shencc30b782012-06-27 21:58:20 +000022 /* Enable UTMI PLL */
Wenyou Yangb55b5962016-02-02 11:11:53 +080023 if (at91_upll_clk_enable())
24 return -1;
Bo Shencc30b782012-06-27 21:58:20 +000025
26 /* Enable USB Host clock */
Bo Shen97b20432014-08-06 17:24:57 +080027 at91_periph_clk_enable(ATMEL_ID_UHPHS);
Bo Shencc30b782012-06-27 21:58:20 +000028
Lucas Stach676ae062012-09-26 00:14:35 +020029 *hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
30 *hcor = (struct ehci_hcor *)((uint32_t)*hccr +
31 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
Bo Shencc30b782012-06-27 21:58:20 +000032
33 return 0;
34}
35
Lucas Stach676ae062012-09-26 00:14:35 +020036int ehci_hcd_stop(int index)
Bo Shencc30b782012-06-27 21:58:20 +000037{
Bo Shencc30b782012-06-27 21:58:20 +000038 /* Disable USB Host Clock */
Bo Shen97b20432014-08-06 17:24:57 +080039 at91_periph_clk_disable(ATMEL_ID_UHPHS);
Bo Shencc30b782012-06-27 21:58:20 +000040
Bo Shencc30b782012-06-27 21:58:20 +000041 /* Disable UTMI PLL */
Wenyou Yangb55b5962016-02-02 11:11:53 +080042 if (at91_upll_clk_disable())
43 return -1;
Bo Shencc30b782012-06-27 21:58:20 +000044
45 return 0;
46}
Wenyou Yang17b68b52016-08-05 08:57:35 +080047
48#else
49
50struct ehci_atmel_priv {
51 struct ehci_ctrl ehci;
52};
53
54static int ehci_atmel_enable_clk(struct udevice *dev)
55{
Wenyou Yang17b68b52016-08-05 08:57:35 +080056 struct clk clk;
Wenyou Yang17b68b52016-08-05 08:57:35 +080057 int ret;
58
59 ret = clk_get_by_index(dev, 0, &clk);
60 if (ret)
61 return ret;
62
63 ret = clk_enable(&clk);
64 if (ret)
65 return ret;
66
67 ret = clk_get_by_index(dev, 1, &clk);
68 if (ret)
69 return -EINVAL;
70
Wenyou Yang17b68b52016-08-05 08:57:35 +080071 ret = clk_enable(&clk);
72 if (ret)
73 return ret;
74
75 clk_free(&clk);
76
77 return 0;
78}
79
80static int ehci_atmel_probe(struct udevice *dev)
81{
82 struct ehci_hccr *hccr;
83 struct ehci_hcor *hcor;
84 fdt_addr_t hcd_base;
85 int ret;
86
87 ret = ehci_atmel_enable_clk(dev);
88 if (ret) {
89 debug("Failed to enable USB Host clock\n");
90 return ret;
91 }
92
93 /*
94 * Get the base address for EHCI controller from the device node
95 */
Simon Glassa821c4a2017-05-17 17:18:05 -060096 hcd_base = devfdt_get_addr(dev);
Wenyou Yang17b68b52016-08-05 08:57:35 +080097 if (hcd_base == FDT_ADDR_T_NONE) {
98 debug("Can't get the EHCI register base address\n");
99 return -ENXIO;
100 }
101
102 hccr = (struct ehci_hccr *)hcd_base;
103 hcor = (struct ehci_hcor *)
104 ((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
105
106 debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n",
107 (u32)hccr, (u32)hcor,
108 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
109
110 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
111}
112
Wenyou Yang17b68b52016-08-05 08:57:35 +0800113static const struct udevice_id ehci_usb_ids[] = {
114 { .compatible = "atmel,at91sam9g45-ehci", },
115 { }
116};
117
118U_BOOT_DRIVER(ehci_atmel) = {
119 .name = "ehci_atmel",
120 .id = UCLASS_USB,
121 .of_match = ehci_usb_ids,
122 .probe = ehci_atmel_probe,
Masahiro Yamada40527342016-09-06 22:17:34 +0900123 .remove = ehci_deregister,
Wenyou Yang17b68b52016-08-05 08:57:35 +0800124 .ops = &ehci_usb_ops,
125 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
126 .priv_auto_alloc_size = sizeof(struct ehci_atmel_priv),
127 .flags = DM_FLAG_ALLOC_PRIV_DMA,
128};
129
130#endif