brcm63xx: add support for linux 3.3
[openwrt/svn-archive/archive.git] / target / linux / brcm63xx / patches-3.3 / 010-add_bcm63xx_ohci_controller.patch
1 From f4aa3db2fb59983d45a9038daabad76102d32fc4 Mon Sep 17 00:00:00 2001
2 From: Maxime Bizon <mbizon@freebox.fr>
3 Date: Fri, 10 Jun 2011 19:14:30 +0200
4 Subject: [PATCH 20/57] ohci: add driver for bcm63xx integrated controller.
5
6 ---
7 drivers/usb/host/Kconfig | 9 ++
8 drivers/usb/host/ohci-bcm63xx.c | 175 +++++++++++++++++++++++++++++++++++++++
9 drivers/usb/host/ohci-hcd.c | 5 +
10 drivers/usb/host/ohci.h | 2 +-
11 4 files changed, 190 insertions(+), 1 deletions(-)
12 create mode 100644 drivers/usb/host/ohci-bcm63xx.c
13
14 --- a/drivers/usb/host/Kconfig
15 +++ b/drivers/usb/host/Kconfig
16 @@ -296,6 +296,15 @@ config USB_OHCI_HCD
17 To compile this driver as a module, choose M here: the
18 module will be called ohci-hcd.
19
20 +config USB_OHCI_BCM63XX
21 + bool "Support for Broadcom 63xx on-chip OHCI USB controller"
22 + depends on USB_OHCI_HCD && BCM63XX
23 + select USB_OHCI_BIG_ENDIAN_DESC
24 + select USB_OHCI_BIG_ENDIAN_MMIO
25 + ---help---
26 + Enables support for the on-chip OHCI controller on
27 + BCM63XX chips.
28 +
29 config USB_OHCI_HCD_OMAP1
30 bool "OHCI support for OMAP1/2 chips"
31 depends on USB_OHCI_HCD && (ARCH_OMAP1 || ARCH_OMAP2)
32 --- /dev/null
33 +++ b/drivers/usb/host/ohci-bcm63xx.c
34 @@ -0,0 +1,175 @@
35 +/*
36 + * This file is subject to the terms and conditions of the GNU General Public
37 + * License. See the file "COPYING" in the main directory of this archive
38 + * for more details.
39 + *
40 + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
41 + */
42 +
43 +#include <linux/init.h>
44 +#include <linux/clk.h>
45 +#include <linux/platform_device.h>
46 +#include <bcm63xx_cpu.h>
47 +#include <bcm63xx_regs.h>
48 +#include <bcm63xx_io.h>
49 +
50 +static struct clk *usb_host_clock;
51 +
52 +static int __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
53 +{
54 + struct ohci_hcd *ohci = hcd_to_ohci(hcd);
55 + int ret;
56 +
57 + ohci->num_ports = 1;
58 +
59 + ret = ohci_init(ohci);
60 + if (ret < 0)
61 + return ret;
62 +
63 + /* FIXME: autodetected port 2 is shared with USB slave */
64 +
65 + ret = ohci_run(ohci);
66 + if (ret < 0) {
67 + err("can't start %s", hcd->self.bus_name);
68 + ohci_stop(hcd);
69 + return ret;
70 + }
71 + return 0;
72 +}
73 +
74 +static const struct hc_driver ohci_bcm63xx_hc_driver = {
75 + .description = hcd_name,
76 + .product_desc = "BCM63XX integrated OHCI controller",
77 + .hcd_priv_size = sizeof(struct ohci_hcd),
78 +
79 + .irq = ohci_irq,
80 + .flags = HCD_USB11 | HCD_MEMORY,
81 + .start = ohci_bcm63xx_start,
82 + .stop = ohci_stop,
83 + .shutdown = ohci_shutdown,
84 + .urb_enqueue = ohci_urb_enqueue,
85 + .urb_dequeue = ohci_urb_dequeue,
86 + .endpoint_disable = ohci_endpoint_disable,
87 + .get_frame_number = ohci_get_frame,
88 + .hub_status_data = ohci_hub_status_data,
89 + .hub_control = ohci_hub_control,
90 + .start_port_reset = ohci_start_port_reset,
91 +};
92 +
93 +static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
94 +{
95 + struct resource *res_mem;
96 + struct usb_hcd *hcd;
97 + struct ohci_hcd *ohci;
98 + struct clk *clk;
99 + u32 reg;
100 + int ret, irq;
101 +
102 + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
103 + irq = platform_get_irq(pdev, 0);
104 + if (!res_mem || irq < 0)
105 + return -ENODEV;
106 +
107 + /* enable USB host clock */
108 + clk = clk_get(&pdev->dev, "usbh");
109 + if (IS_ERR(clk))
110 + return -ENODEV;
111 +
112 + clk_enable(clk);
113 + usb_host_clock = clk;
114 + msleep(100);
115 +
116 + if (BCMCPU_IS_6348())
117 + bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
118 + else if (BCMCPU_IS_6358()) {
119 + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
120 + reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
121 + reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
122 + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
123 + /*
124 + * The magic value comes for the original vendor BSP
125 + * and is needed for USB to work. Datasheet does not
126 + * help, so the magic value is used as-is.
127 + */
128 + bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
129 + USBH_PRIV_TEST_6358_REG);
130 +
131 + } else if (BCMCPU_IS_6368()) {
132 + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
133 + reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
134 + reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
135 + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
136 +
137 + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
138 + reg |= USBH_PRIV_SETUP_IOC_MASK;
139 + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
140 + }
141 +
142 + hcd = usb_create_hcd(&ohci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
143 + if (!hcd)
144 + return -ENOMEM;
145 + hcd->rsrc_start = res_mem->start;
146 + hcd->rsrc_len = res_mem->end - res_mem->start + 1;
147 +
148 + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
149 + pr_debug("request_mem_region failed\n");
150 + ret = -EBUSY;
151 + goto out;
152 + }
153 +
154 + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
155 + if (!hcd->regs) {
156 + pr_debug("ioremap failed\n");
157 + ret = -EIO;
158 + goto out1;
159 + }
160 +
161 + ohci = hcd_to_ohci(hcd);
162 + ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
163 + OHCI_QUIRK_FRAME_NO;
164 + ohci_hcd_init(ohci);
165 +
166 + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
167 + if (ret)
168 + goto out2;
169 +
170 + platform_set_drvdata(pdev, hcd);
171 + return 0;
172 +
173 +out2:
174 + iounmap(hcd->regs);
175 +out1:
176 + release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
177 +out:
178 + usb_put_hcd(hcd);
179 + return ret;
180 +}
181 +
182 +static int __devexit ohci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
183 +{
184 + struct usb_hcd *hcd;
185 +
186 + hcd = platform_get_drvdata(pdev);
187 + usb_remove_hcd(hcd);
188 + iounmap(hcd->regs);
189 + usb_put_hcd(hcd);
190 + release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
191 + if (usb_host_clock) {
192 + clk_disable(usb_host_clock);
193 + clk_put(usb_host_clock);
194 + }
195 + platform_set_drvdata(pdev, NULL);
196 + return 0;
197 +}
198 +
199 +static struct platform_driver ohci_hcd_bcm63xx_driver = {
200 + .probe = ohci_hcd_bcm63xx_drv_probe,
201 + .remove = __devexit_p(ohci_hcd_bcm63xx_drv_remove),
202 + .shutdown = usb_hcd_platform_shutdown,
203 + .driver = {
204 + .name = "bcm63xx_ohci",
205 + .owner = THIS_MODULE,
206 + },
207 +};
208 +
209 +MODULE_ALIAS("platform:bcm63xx_ohci");
210 --- a/drivers/usb/host/ohci-hcd.c
211 +++ b/drivers/usb/host/ohci-hcd.c
212 @@ -1121,6 +1121,11 @@ MODULE_LICENSE ("GPL");
213 #define PLATFORM_DRIVER ohci_xls_driver
214 #endif
215
216 +#ifdef CONFIG_USB_OHCI_BCM63XX
217 +#include "ohci-bcm63xx.c"
218 +#define PLATFORM_DRIVER ohci_hcd_bcm63xx_driver
219 +#endif
220 +
221 #if !defined(PCI_DRIVER) && \
222 !defined(PLATFORM_DRIVER) && \
223 !defined(OMAP1_PLATFORM_DRIVER) && \
224 --- a/drivers/usb/host/ohci.h
225 +++ b/drivers/usb/host/ohci.h
226 @@ -652,7 +652,7 @@ static inline u32 hc32_to_cpup (const st
227 * some big-endian SOC implementations. Same thing happens with PSW access.
228 */
229
230 -#ifdef CONFIG_PPC_MPC52xx
231 +#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX)
232 #define big_endian_frame_no_quirk(ohci) (ohci->flags & OHCI_QUIRK_FRAME_NO)
233 #else
234 #define big_endian_frame_no_quirk(ohci) 0