summaryrefslogtreecommitdiffstats
path: root/target/linux/brcm63xx/patches-2.6.27/007-usb_ohci_support.patch
blob: 1b7a0534280a26823fdd6633df3322b88393d2ab (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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
From f7416412febd7efc1d33c7506c81265719368667 Mon Sep 17 00:00:00 2001
From: Maxime Bizon <mbizon@freebox.fr>
Date: Mon, 21 Jul 2008 14:58:19 +0200
Subject: [PATCH] [MIPS] BCM63XX: Add USB OHCI support.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
---
 arch/mips/bcm63xx/Kconfig                          |    6 +
 arch/mips/bcm63xx/Makefile                         |    1 +
 arch/mips/bcm63xx/dev-usb-ohci.c                   |   50 ++++++
 drivers/usb/host/ohci-bcm63xx.c                    |  159 ++++++++++++++++++++
 drivers/usb/host/ohci-hcd.c                        |    5 +
 drivers/usb/host/ohci.h                            |    7 +-
 .../asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ohci.h   |    6 +
 7 files changed, 233 insertions(+), 1 deletions(-)
 create mode 100644 arch/mips/bcm63xx/dev-usb-ohci.c
 create mode 100644 drivers/usb/host/ohci-bcm63xx.c
 create mode 100644 include/asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ohci.h

diff --git a/arch/mips/bcm63xx/Kconfig b/arch/mips/bcm63xx/Kconfig
index 7ca370a..f2ddb87 100644
--- a/arch/mips/bcm63xx/Kconfig
+++ b/arch/mips/bcm63xx/Kconfig
@@ -4,8 +4,14 @@ menu "CPU support"
 config BCM63XX_CPU_6348
 	bool "support 6348 CPU"
 	select HW_HAS_PCI
+	select USB_ARCH_HAS_OHCI
+	select USB_OHCI_BIG_ENDIAN_DESC
+	select USB_OHCI_BIG_ENDIAN_MMIO
 
 config BCM63XX_CPU_6358
 	bool "support 6358 CPU"
 	select HW_HAS_PCI
+	select USB_ARCH_HAS_OHCI
+	select USB_OHCI_BIG_ENDIAN_DESC
+	select USB_OHCI_BIG_ENDIAN_MMIO
 endmenu
diff --git a/arch/mips/bcm63xx/Makefile b/arch/mips/bcm63xx/Makefile
index 456e915..75f0d54 100644
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,4 +1,5 @@
 obj-y		+= clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o
 obj-y		+= dev-uart.o
 obj-y		+= dev-pcmcia.o
+obj-y		+= dev-usb-ohci.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
diff --git a/arch/mips/bcm63xx/dev-usb-ohci.c b/arch/mips/bcm63xx/dev-usb-ohci.c
new file mode 100644
index 0000000..377e67c
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-usb-ohci.c
@@ -0,0 +1,50 @@
+/*
+ * 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/kernel.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_usb_ohci.h>
+
+static struct resource ohci_resources[] = {
+	{
+		.start		= -1, /* filled at runtime */
+		.end		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 ohci_dmamask = ~(u32)0;
+
+static struct platform_device bcm63xx_ohci_device = {
+	.name		= "bcm63xx_ohci",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(ohci_resources),
+	.resource	= ohci_resources,
+	.dev		= {
+		.dma_mask		= &ohci_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+	},
+};
+
+int __init bcm63xx_ohci_register(void)
+{
+	if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
+		return 0;
+
+	ohci_resources[0].start = bcm63xx_regset_address(RSET_OHCI0);
+	ohci_resources[0].end = ohci_resources[0].start;
+	ohci_resources[0].end += RSET_OHCI_SIZE - 1;
+	ohci_resources[1].start = bcm63xx_get_irq_number(IRQ_OHCI0);
+	return platform_device_register(&bcm63xx_ohci_device);
+}
diff --git a/drivers/usb/host/ohci-bcm63xx.c b/drivers/usb/host/ohci-bcm63xx.c
new file mode 100644
index 0000000..08807d9
--- /dev/null
+++ b/drivers/usb/host/ohci-bcm63xx.c
@@ -0,0 +1,159 @@
+/*
+ * 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 __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
+{
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	int ret;
+
+	ret = ohci_init(ohci);
+	if (ret < 0)
+		return ret;
+
+	/* FIXME: autodetected port 2 is shared with USB slave */
+
+	ret = ohci_run(ohci);
+	if (ret < 0) {
+		err("can't start %s", hcd->self.bus_name);
+		ohci_stop(hcd);
+		return ret;
+	}
+	return 0;
+}
+
+static const struct hc_driver ohci_bcm63xx_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"BCM63XX integrated OHCI controller",
+	.hcd_priv_size =	sizeof(struct ohci_hcd),
+
+	.irq =			ohci_irq,
+	.flags =		HCD_USB11 | HCD_MEMORY,
+	.start =		ohci_bcm63xx_start,
+	.stop =			ohci_stop,
+	.shutdown =		ohci_shutdown,
+	.urb_enqueue =		ohci_urb_enqueue,
+	.urb_dequeue =		ohci_urb_dequeue,
+	.endpoint_disable =	ohci_endpoint_disable,
+	.get_frame_number =	ohci_get_frame,
+	.hub_status_data =	ohci_hub_status_data,
+	.hub_control =		ohci_hub_control,
+	.start_port_reset =	ohci_start_port_reset,
+};
+
+static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
+{
+	struct resource *res_mem, *res_irq;
+	struct usb_hcd *hcd;
+	struct ohci_hcd *ohci;
+	u32 reg;
+	int ret;
+
+	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res_mem || !res_irq)
+		return -ENODEV;
+
+	if (BCMCPU_IS_6348()) {
+		struct clk *clk;
+		/* enable USB host clock */
+		clk = clk_get(&pdev->dev, "usbh");
+		if (IS_ERR(clk))
+			return -ENODEV;
+
+		clk_enable(clk);
+		usb_host_clock = clk;
+		bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
+
+	} else if (BCMCPU_IS_6358()) {
+		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
+		reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
+		reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
+		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
+		/* don't ask... */
+		bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG);
+	} else
+		return 0;
+
+	hcd = usb_create_hcd(&ohci_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;
+	}
+
+	ohci = hcd_to_ohci(hcd);
+	ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
+		OHCI_QUIRK_FRAME_NO;
+	ohci_hcd_init(ohci);
+
+	ret = usb_add_hcd(hcd, res_irq->start, 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 ohci_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 ohci_hcd_bcm63xx_driver = {
+	.probe		= ohci_hcd_bcm63xx_drv_probe,
+	.remove		= __devexit_p(ohci_hcd_bcm63xx_drv_remove),
+	.shutdown	= usb_hcd_platform_shutdown,
+	.driver		= {
+		.name	= "bcm63xx_ohci",
+		.owner	= THIS_MODULE,
+		.bus	= &platform_bus_type
+	},
+};
+
+MODULE_ALIAS("platform:bcm63xx_ohci");
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 8990196..7e360ef 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1050,6 +1050,11 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER		usb_hcd_pnx4008_driver
 #endif
 
+#ifdef CONFIG_BCM63XX
+#include "ohci-bcm63xx.c"
+#define PLATFORM_DRIVER		ohci_hcd_bcm63xx_driver
+#endif
+
 #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
     defined(CONFIG_CPU_SUBTYPE_SH7721) || \
     defined(CONFIG_CPU_SUBTYPE_SH7763)
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index faf622e..947e240 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -549,6 +549,11 @@ static inline struct usb_hcd *ohci_to_hcd (const struct ohci_hcd *ohci)
 #define writel_be(val, addr)	out_be32((__force unsigned *)addr, val)
 #endif
 
+#if defined(CONFIG_MIPS) && defined(CONFIG_BCM63XX)
+#define readl_be(addr)		__raw_readl((__force unsigned *)addr)
+#define writel_be(val, addr)	__raw_writel(val, (__force unsigned *)addr)
+#endif
+
 static inline unsigned int _ohci_readl (const struct ohci_hcd *ohci,
 					__hc32 __iomem * regs)
 {
@@ -654,7 +659,7 @@ static inline u32 hc32_to_cpup (const struct ohci_hcd *ohci, const __hc32 *x)
  * some big-endian SOC implementations.  Same thing happens with PSW access.
  */
 
-#ifdef CONFIG_PPC_MPC52xx
+#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX)
 #define big_endian_frame_no_quirk(ohci)	(ohci->flags & OHCI_QUIRK_FRAME_NO)
 #else
 #define big_endian_frame_no_quirk(ohci)	0
diff --git a/include/asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ohci.h b/include/asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ohci.h
new file mode 100644
index 0000000..518a04d
--- /dev/null
+++ b/include/asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ohci.h
@@ -0,0 +1,6 @@
+#ifndef BCM63XX_DEV_USB_OHCI_H_
+#define BCM63XX_DEV_USB_OHCI_H_
+
+int bcm63xx_ohci_register(void);
+
+#endif /* BCM63XX_DEV_USB_OHCI_H_ */
-- 
1.5.4.3