aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/brcm63xx/patches-3.6/402-ehci-add-driver-for-bcm63xx-integrated-controller.patch
blob: 9b67b5ac8e751b0800402cbfc116813d3f9be486 (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
From db58271d5152aa1d3894fdef13ca04379139d5d9 Mon Sep 17 00:00:00 2001
From: Maxime Bizon <mbizon@freebox.fr>
Date: Fri, 10 Jun 2011 19:15:47 +0200
Subject: [PATCH 25/63] ehci: add driver for bcm63xx integrated controller.

---
 drivers/usb/host/Kconfig        |   10 ++-
 drivers/usb/host/ehci-bcm63xx.c |  186 +++++++++++++++++++++++++++++++++++++++
 drivers/usb/host/ehci-hcd.c     |    5 +
 3 files changed, 199 insertions(+), 1 deletions(-)
 create mode 100644 drivers/usb/host/ehci-bcm63xx.c

--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -110,7 +110,8 @@ config USB_EHCI_BIG_ENDIAN_MMIO
 	depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \
 				    ARCH_IXP4XX || XPS_USB_HCD_XILINX || \
 				    PPC_MPC512x || CPU_CAVIUM_OCTEON || \
-				    PMC_MSP || SPARC_LEON || MIPS_SEAD3)
+				    PMC_MSP || SPARC_LEON || MIPS_SEAD3 || \
+				    BCM63XX)
 	default y
 
 config USB_EHCI_BIG_ENDIAN_DESC
@@ -134,6 +135,14 @@ config XPS_USB_HCD_XILINX
 config USB_FSL_MPH_DR_OF
 	tristate
 
+config USB_EHCI_BCM63XX
+	bool "Support for Broadcom 63xx on-chip EHCI USB controller"
+	depends on USB_EHCI_HCD && BCM63XX
+	select USB_EHCI_BIG_ENDIAN_MMIO
+	---help---
+	  Enables support for the on-chip EHCI controller on
+	  BCM6358 and later chips.
+
 config USB_EHCI_FSL
 	bool "Support for Freescale PPC on-chip EHCI USB controller"
 	depends on USB_EHCI_HCD && FSL_SOC
--- /dev/null
+++ b/drivers/usb/host/ehci-bcm63xx.c
@@ -0,0 +1,186 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_regs.h>
+#include <bcm63xx_io.h>
+
+static struct clk *usb_host_clock;
+
+static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
+{
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	int retval;
+
+	retval = ehci_halt(ehci);
+	if (retval)
+		return retval;
+
+	retval = ehci_init(hcd);
+	if (retval)
+		return retval;
+
+	ehci_reset(ehci);
+	ehci_port_power(ehci, 0);
+
+	return retval;
+}
+
+
+static const struct hc_driver ehci_bcm63xx_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"BCM63XX integrated EHCI controller",
+	.hcd_priv_size =	sizeof(struct ehci_hcd),
+
+	.irq =			ehci_irq,
+	.flags =		HCD_MEMORY | HCD_USB2,
+
+	.reset =		ehci_bcm63xx_setup,
+	.start =		ehci_run,
+	.stop =			ehci_stop,
+	.shutdown =		ehci_shutdown,
+
+	.urb_enqueue =		ehci_urb_enqueue,
+	.urb_dequeue =		ehci_urb_dequeue,
+	.endpoint_disable =	ehci_endpoint_disable,
+
+	.get_frame_number =	ehci_get_frame,
+
+	.hub_status_data =	ehci_hub_status_data,
+	.hub_control =		ehci_hub_control,
+	.bus_suspend =		ehci_bus_suspend,
+	.bus_resume =		ehci_bus_resume,
+	.relinquish_port =	ehci_relinquish_port,
+	.port_handed_over =	ehci_port_handed_over,
+};
+
+static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
+{
+	struct resource *res_mem;
+	struct usb_hcd *hcd;
+	struct ehci_hcd *ehci;
+	struct clk *clk;
+	u32 reg;
+	int ret, irq;
+
+	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	irq = platform_get_irq(pdev, 0);;
+	if (!res_mem || irq < 0)
+		return -ENODEV;
+
+	/* enable USB host clock */
+	clk = clk_get(&pdev->dev, "usbh");
+	if (IS_ERR(clk))
+		return -ENODEV;
+
+	clk_enable(clk);
+	usb_host_clock = clk;
+	msleep(100);
+
+	if (BCMCPU_IS_6358()) {
+		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
+		reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
+		reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
+		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
+
+		/*
+		 * The magic value comes for the original vendor BSP
+		 * and is needed for USB to work. Datasheet does not
+		 * help, so the magic value is used as-is.
+		 */
+		bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
+				USBH_PRIV_TEST_6358_REG);
+
+	} else if (BCMCPU_IS_6368()) {
+
+		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
+		reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
+		reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
+		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
+
+		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
+		reg |= USBH_PRIV_SETUP_IOC_MASK;
+		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
+	}
+
+	hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
+	if (!hcd)
+		return -ENOMEM;
+	hcd->rsrc_start = res_mem->start;
+	hcd->rsrc_len = res_mem->end - res_mem->start + 1;
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		pr_debug("request_mem_region failed\n");
+		ret = -EBUSY;
+		goto out;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (!hcd->regs) {
+		pr_debug("ioremap failed\n");
+		ret = -EIO;
+		goto out1;
+	}
+
+	ehci = hcd_to_ehci(hcd);
+	ehci->big_endian_mmio = 1;
+	ehci->big_endian_desc = 0;
+	ehci->caps = hcd->regs;
+	ehci->regs = hcd->regs +
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+	ehci->sbrn = 0x20;
+	ehci->ignore_oc = 1;
+
+	ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+	if (ret)
+		goto out2;
+
+	platform_set_drvdata(pdev, hcd);
+	return 0;
+
+out2:
+	iounmap(hcd->regs);
+out1:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+out:
+	usb_put_hcd(hcd);
+	return ret;
+}
+
+static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+
+	hcd = platform_get_drvdata(pdev);
+	usb_remove_hcd(hcd);
+	iounmap(hcd->regs);
+	usb_put_hcd(hcd);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	if (usb_host_clock) {
+		clk_disable(usb_host_clock);
+		clk_put(usb_host_clock);
+	}
+	platform_set_drvdata(pdev, NULL);
+	return 0;
+}
+
+static struct platform_driver ehci_hcd_bcm63xx_driver = {
+	.probe		= ehci_hcd_bcm63xx_drv_probe,
+	.remove		= __devexit_p(ehci_hcd_bcm63xx_drv_remove),
+	.shutdown	= usb_hcd_platform_shutdown,
+	.driver		= {
+		.name	= "bcm63xx_ehci",
+		.owner	= THIS_MODULE,
+	},
+};
+
+MODULE_ALIAS("platform:bcm63xx_ehci");
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1339,6 +1339,11 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER		ehci_platform_driver
 #endif
 
+#ifdef CONFIG_USB_EHCI_BCM63XX
+#include "ehci-bcm63xx.c"
+#define	PLATFORM_DRIVER		ehci_hcd_bcm63xx_driver
+#endif
+
 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
     !defined(XILINX_OF_PLATFORM_DRIVER)