summaryrefslogtreecommitdiff
path: root/target/linux/bcm53xx/patches-4.4/197-USB-bcma-add-USB-3.0-support.patch
blob: a906892a5c03468a0903f0b0b886f43af06b5c5f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
From 121ec6539abedbc0e975cf35f48ee044b323e4c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 16 Jun 2015 17:14:26 +0200
Subject: [PATCH v3 5/6] usb: bcma: add USB 3.0 support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 drivers/usb/host/bcma-hcd.c | 225 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 225 insertions(+)

--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -29,6 +29,7 @@
 #include <linux/of_gpio.h>
 #include <linux/usb/ehci_pdriver.h>
 #include <linux/usb/ohci_pdriver.h>
+#include <linux/usb/xhci_pdriver.h>
 
 MODULE_AUTHOR("Hauke Mehrtens");
 MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
@@ -38,6 +39,7 @@ struct bcma_hcd_device {
 	struct bcma_device *core;
 	struct platform_device *ehci_dev;
 	struct platform_device *ohci_dev;
+	struct platform_device *xhci_dev;
 	struct gpio_desc *gpio_desc;
 };
 
@@ -245,6 +247,10 @@ static const struct usb_ehci_pdata ehci_
 static const struct usb_ohci_pdata ohci_pdata = {
 };
 
+static const struct usb_xhci_pdata xhci_pdata = {
+	.usb3_fake_doorbell = 1
+};
+
 static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev,
 						    const char *name, u32 addr,
 						    const void *data,
@@ -338,6 +344,167 @@ err_unregister_ohci_dev:
 	return err;
 }
 
+static bool bcma_wait_reg(struct bcma_bus *bus, void __iomem *addr, u32 mask,
+			  u32 value, int timeout)
+{
+	unsigned long deadline = jiffies + timeout;
+	u32 val;
+
+	do {
+		val = readl(addr);
+		if ((val & mask) == value)
+			return true;
+		cpu_relax();
+		udelay(10);
+	} while (!time_after_eq(jiffies, deadline));
+
+	pr_err("Timeout waiting for register %p\n", addr);
+
+	return false;
+}
+
+static void bcma_hcd_usb30_phy_init(struct bcma_hcd_device *bcma_hcd)
+{
+	struct bcma_device *core = bcma_hcd->core;
+	struct bcma_bus *bus = core->bus;
+	struct bcma_chipinfo *chipinfo = &bus->chipinfo;
+	struct bcma_drv_cc_b *ccb = &bus->drv_cc_b;
+	struct bcma_device *arm_core;
+	void __iomem *dmu = NULL;
+	u32 cru_straps_ctrl;
+
+	if (chipinfo->id != BCMA_CHIP_ID_BCM4707 &&
+	    chipinfo->id != BCMA_CHIP_ID_BCM47094 &&
+	    chipinfo->id != BCMA_CHIP_ID_BCM53018)
+		return;
+
+	arm_core = bcma_find_core(bus, BCMA_CORE_ARMCA9);
+	if (!arm_core)
+		return;
+
+	dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000);
+	if (!dmu)
+		goto out;
+
+	/* Check strapping of PCIE/USB3 SEL */
+	cru_straps_ctrl = ioread32(dmu + 0x2a0);
+	if ((cru_straps_ctrl & 0x10) == 0)
+		goto out;
+
+	/* Perform USB3 system soft reset */
+	bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
+
+	/* Enable MDIO. Setting MDCDIV as 26  */
+	iowrite32(0x0000009a, ccb->mii + 0x000);
+	udelay(2);
+
+	if (chipinfo->id == BCMA_CHIP_ID_BCM53018 ||
+	    (chipinfo->id == BCMA_CHIP_ID_BCM4707 && (chipinfo->rev == 4 || chipinfo->rev == 6)) ||
+	    chipinfo->id == BCMA_CHIP_ID_BCM47094) {
+			/* For NS-B0, USB3 PLL Block */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x587e8000, ccb->mii + 0x004);
+
+			/* Clear ana_pllSeqStart */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x58061000, ccb->mii + 0x004);
+
+			/* CMOS Divider ratio to 25 */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x582a6400, ccb->mii + 0x004);
+
+			/* Asserting PLL Reset */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x582ec000, ccb->mii + 0x004);
+
+			/* Deaaserting PLL Reset */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x582e8000, ccb->mii + 0x004);
+
+			/* Waiting MII Mgt interface idle */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+			/* Deasserting USB3 system reset */
+			bcma_awrite32(core, BCMA_RESET_CTL, 0);
+
+			/* PLL frequency monitor enable */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x58069000, ccb->mii + 0x004);
+
+			/* PIPE Block */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x587e8060, ccb->mii + 0x004);
+
+			/* CMPMAX & CMPMINTH setting */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x580af30d, ccb->mii + 0x004);
+
+			/* DEGLITCH MIN & MAX setting */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x580e6302, ccb->mii + 0x004);
+
+			/* TXPMD block */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x587e8040, ccb->mii + 0x004);
+
+			/* Enabling SSC */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x58061003, ccb->mii + 0x004);
+
+			/* Waiting MII Mgt interface idle */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+	} else if (chipinfo->id == BCMA_CHIP_ID_BCM4707) {
+			/* PLL30 block */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x587e8000, ccb->mii + 0x004);
+
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x582a6400, ccb->mii + 0x004);
+
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x587e80e0, ccb->mii + 0x004);
+
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x580a009c, ccb->mii + 0x004);
+
+			/* Enable SSC */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x587e8040, ccb->mii + 0x004);
+
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x580a21d3, ccb->mii + 0x004);
+
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+			iowrite32(0x58061003, ccb->mii + 0x004);
+
+			/* Waiting MII Mgt interface idle */
+			bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+			/* Deasserting USB3 system reset */
+			bcma_awrite32(core, BCMA_RESET_CTL, 0);
+	}
+out:
+	if (dmu)
+		iounmap(dmu);
+}
+
+static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)
+{
+	struct bcma_device *core = bcma_hcd->core;
+
+	bcma_core_enable(core, 0);
+
+	bcma_hcd_usb30_phy_init(bcma_hcd);
+
+	bcma_hcd->xhci_dev = bcma_hcd_create_pdev(core, "xhci-hcd", core->addr,
+						  &xhci_pdata,
+						  sizeof(xhci_pdata));
+	if (IS_ERR(bcma_hcd->ohci_dev))
+		return PTR_ERR(bcma_hcd->ohci_dev);
+
+	return 0;
+}
+
 static int bcma_hcd_probe(struct bcma_device *core)
 {
 	int err;
@@ -364,6 +531,11 @@ static int bcma_hcd_probe(struct bcma_de
 		if (err)
 			return err;
 		break;
+	case BCMA_CORE_NS_USB30:
+		err = bcma_hcd_usb30_init(usb_dev);
+		if (err)
+			return err;
+		break;
 	default:
 		return -ENODEV;
 	}
@@ -377,11 +549,14 @@ static void bcma_hcd_remove(struct bcma_
 	struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);
 	struct platform_device *ohci_dev = usb_dev->ohci_dev;
 	struct platform_device *ehci_dev = usb_dev->ehci_dev;
+	struct platform_device *xhci_dev = usb_dev->xhci_dev;
 
 	if (ohci_dev)
 		platform_device_unregister(ohci_dev);
 	if (ehci_dev)
 		platform_device_unregister(ehci_dev);
+	if (xhci_dev)
+		platform_device_unregister(xhci_dev);
 
 	bcma_core_disable(dev, 0);
 }
@@ -418,6 +593,7 @@ static int bcma_hcd_resume(struct bcma_d
 static const struct bcma_device_id bcma_hcd_table[] = {
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
+	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV, BCMA_ANY_CLASS),
 	{},
 };
 MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);