diff options
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/Kconfig | 1 | ||||
-rw-r--r-- | drivers/usb/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/host/ohci-at91.c | 306 | ||||
-rw-r--r-- | drivers/usb/host/ohci-hcd.c | 5 |
4 files changed, 313 insertions, 0 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 0e865975899..b1222cd4aa4 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig | |||
@@ -23,6 +23,7 @@ config USB_ARCH_HAS_OHCI | |||
23 | default y if ARCH_LH7A404 | 23 | default y if ARCH_LH7A404 |
24 | default y if ARCH_S3C2410 | 24 | default y if ARCH_S3C2410 |
25 | default y if PXA27x | 25 | default y if PXA27x |
26 | default y if ARCH_AT91RM9200 | ||
26 | # PPC: | 27 | # PPC: |
27 | default y if STB03xxx | 28 | default y if STB03xxx |
28 | default y if PPC_MPC52xx | 29 | default y if PPC_MPC52xx |
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 7796ecfc076..bb36a1c1dbb 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile | |||
@@ -15,6 +15,7 @@ obj-$(CONFIG_USB_OHCI_HCD) += host/ | |||
15 | obj-$(CONFIG_USB_UHCI_HCD) += host/ | 15 | obj-$(CONFIG_USB_UHCI_HCD) += host/ |
16 | obj-$(CONFIG_USB_SL811_HCD) += host/ | 16 | obj-$(CONFIG_USB_SL811_HCD) += host/ |
17 | obj-$(CONFIG_ETRAX_USB_HOST) += host/ | 17 | obj-$(CONFIG_ETRAX_USB_HOST) += host/ |
18 | obj-$(CONFIG_USB_OHCI_AT91) += host/ | ||
18 | 19 | ||
19 | obj-$(CONFIG_USB_ACM) += class/ | 20 | obj-$(CONFIG_USB_ACM) += class/ |
20 | obj-$(CONFIG_USB_PRINTER) += class/ | 21 | obj-$(CONFIG_USB_PRINTER) += class/ |
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c new file mode 100644 index 00000000000..980030d684d --- /dev/null +++ b/drivers/usb/host/ohci-at91.c | |||
@@ -0,0 +1,306 @@ | |||
1 | /* | ||
2 | * OHCI HCD (Host Controller Driver) for USB. | ||
3 | * | ||
4 | * Copyright (C) 2004 SAN People (Pty) Ltd. | ||
5 | * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org> | ||
6 | * | ||
7 | * AT91RM9200 Bus Glue | ||
8 | * | ||
9 | * Based on fragments of 2.4 driver by Rick Bronson. | ||
10 | * Based on ohci-omap.c | ||
11 | * | ||
12 | * This file is licenced under the GPL. | ||
13 | */ | ||
14 | |||
15 | #include <linux/clk.h> | ||
16 | #include <linux/platform_device.h> | ||
17 | |||
18 | #include <asm/mach-types.h> | ||
19 | #include <asm/hardware.h> | ||
20 | #include <asm/arch/board.h> | ||
21 | |||
22 | #ifndef CONFIG_ARCH_AT91RM9200 | ||
23 | #error "This file is AT91RM9200 bus glue. CONFIG_ARCH_AT91RM9200 must be defined." | ||
24 | #endif | ||
25 | |||
26 | /* interface and function clocks */ | ||
27 | static struct clk *iclk, *fclk; | ||
28 | |||
29 | extern int usb_disabled(void); | ||
30 | |||
31 | /*-------------------------------------------------------------------------*/ | ||
32 | |||
33 | static void at91_start_hc(struct platform_device *pdev) | ||
34 | { | ||
35 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | ||
36 | struct ohci_regs __iomem *regs = hcd->regs; | ||
37 | |||
38 | dev_dbg(&pdev->dev, "starting AT91RM9200 OHCI USB Controller\n"); | ||
39 | |||
40 | /* | ||
41 | * Start the USB clocks. | ||
42 | */ | ||
43 | clk_enable(iclk); | ||
44 | clk_enable(fclk); | ||
45 | |||
46 | /* | ||
47 | * The USB host controller must remain in reset. | ||
48 | */ | ||
49 | writel(0, ®s->control); | ||
50 | } | ||
51 | |||
52 | static void at91_stop_hc(struct platform_device *pdev) | ||
53 | { | ||
54 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | ||
55 | struct ohci_regs __iomem *regs = hcd->regs; | ||
56 | |||
57 | dev_dbg(&pdev->dev, "stopping AT91RM9200 OHCI USB Controller\n"); | ||
58 | |||
59 | /* | ||
60 | * Put the USB host controller into reset. | ||
61 | */ | ||
62 | writel(0, ®s->control); | ||
63 | |||
64 | /* | ||
65 | * Stop the USB clocks. | ||
66 | */ | ||
67 | clk_disable(fclk); | ||
68 | clk_disable(iclk); | ||
69 | } | ||
70 | |||
71 | |||
72 | /*-------------------------------------------------------------------------*/ | ||
73 | |||
74 | static int usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); | ||
75 | |||
76 | /* configure so an HC device and id are always provided */ | ||
77 | /* always called with process context; sleeping is OK */ | ||
78 | |||
79 | |||
80 | /** | ||
81 | * usb_hcd_at91_probe - initialize AT91RM9200-based HCDs | ||
82 | * Context: !in_interrupt() | ||
83 | * | ||
84 | * Allocates basic resources for this USB host controller, and | ||
85 | * then invokes the start() method for the HCD associated with it | ||
86 | * through the hotplug entry's driver_data. | ||
87 | * | ||
88 | * Store this function in the HCD's struct pci_driver as probe(). | ||
89 | */ | ||
90 | int usb_hcd_at91_probe (const struct hc_driver *driver, struct platform_device *pdev) | ||
91 | { | ||
92 | int retval; | ||
93 | struct usb_hcd *hcd = NULL; | ||
94 | |||
95 | if (pdev->num_resources != 2) { | ||
96 | pr_debug("hcd probe: invalid num_resources"); | ||
97 | return -ENODEV; | ||
98 | } | ||
99 | |||
100 | if ((pdev->resource[0].flags != IORESOURCE_MEM) || (pdev->resource[1].flags != IORESOURCE_IRQ)) { | ||
101 | pr_debug("hcd probe: invalid resource type\n"); | ||
102 | return -ENODEV; | ||
103 | } | ||
104 | |||
105 | hcd = usb_create_hcd(driver, &pdev->dev, "at91rm9200"); | ||
106 | if (!hcd) | ||
107 | return -ENOMEM; | ||
108 | hcd->rsrc_start = pdev->resource[0].start; | ||
109 | hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; | ||
110 | |||
111 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | ||
112 | pr_debug("request_mem_region failed\n"); | ||
113 | retval = -EBUSY; | ||
114 | goto err1; | ||
115 | } | ||
116 | |||
117 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | ||
118 | if (!hcd->regs) { | ||
119 | pr_debug("ioremap failed\n"); | ||
120 | retval = -EIO; | ||
121 | goto err2; | ||
122 | } | ||
123 | |||
124 | iclk = clk_get(&pdev->dev, "ohci_clk"); | ||
125 | fclk = clk_get(&pdev->dev, "uhpck"); | ||
126 | |||
127 | at91_start_hc(pdev); | ||
128 | ohci_hcd_init(hcd_to_ohci(hcd)); | ||
129 | |||
130 | retval = usb_add_hcd(hcd, pdev->resource[1].start, SA_INTERRUPT); | ||
131 | if (retval == 0) | ||
132 | return retval; | ||
133 | |||
134 | /* Error handling */ | ||
135 | at91_stop_hc(pdev); | ||
136 | |||
137 | clk_put(fclk); | ||
138 | clk_put(iclk); | ||
139 | |||
140 | iounmap(hcd->regs); | ||
141 | |||
142 | err2: | ||
143 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | ||
144 | |||
145 | err1: | ||
146 | usb_put_hcd(hcd); | ||
147 | return retval; | ||
148 | } | ||
149 | |||
150 | |||
151 | /* may be called without controller electrically present */ | ||
152 | /* may be called with controller, bus, and devices active */ | ||
153 | |||
154 | /** | ||
155 | * usb_hcd_at91_remove - shutdown processing for AT91RM9200-based HCDs | ||
156 | * @dev: USB Host Controller being removed | ||
157 | * Context: !in_interrupt() | ||
158 | * | ||
159 | * Reverses the effect of usb_hcd_at91_probe(), first invoking | ||
160 | * the HCD's stop() method. It is always called from a thread | ||
161 | * context, normally "rmmod", "apmd", or something similar. | ||
162 | * | ||
163 | */ | ||
164 | static int usb_hcd_at91_remove (struct usb_hcd *hcd, struct platform_device *pdev) | ||
165 | { | ||
166 | usb_remove_hcd(hcd); | ||
167 | at91_stop_hc(pdev); | ||
168 | iounmap(hcd->regs); | ||
169 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | ||
170 | |||
171 | clk_put(fclk); | ||
172 | clk_put(iclk); | ||
173 | fclk = iclk = NULL; | ||
174 | |||
175 | dev_set_drvdata(&pdev->dev, NULL); | ||
176 | return 0; | ||
177 | } | ||
178 | |||
179 | /*-------------------------------------------------------------------------*/ | ||
180 | |||
181 | static int __devinit | ||
182 | ohci_at91_start (struct usb_hcd *hcd) | ||
183 | { | ||
184 | // struct at91_ohci_data *board = hcd->self.controller->platform_data; | ||
185 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); | ||
186 | int ret; | ||
187 | |||
188 | if ((ret = ohci_init(ohci)) < 0) | ||
189 | return ret; | ||
190 | |||
191 | if ((ret = ohci_run(ohci)) < 0) { | ||
192 | err("can't start %s", hcd->self.bus_name); | ||
193 | ohci_stop(hcd); | ||
194 | return ret; | ||
195 | } | ||
196 | // hcd->self.root_hub->maxchild = board->ports; | ||
197 | return 0; | ||
198 | } | ||
199 | |||
200 | /*-------------------------------------------------------------------------*/ | ||
201 | |||
202 | static const struct hc_driver ohci_at91_hc_driver = { | ||
203 | .description = hcd_name, | ||
204 | .product_desc = "AT91RM9200 OHCI", | ||
205 | .hcd_priv_size = sizeof(struct ohci_hcd), | ||
206 | |||
207 | /* | ||
208 | * generic hardware linkage | ||
209 | */ | ||
210 | .irq = ohci_irq, | ||
211 | .flags = HCD_USB11 | HCD_MEMORY, | ||
212 | |||
213 | /* | ||
214 | * basic lifecycle operations | ||
215 | */ | ||
216 | .start = ohci_at91_start, | ||
217 | .stop = ohci_stop, | ||
218 | |||
219 | /* | ||
220 | * managing i/o requests and associated device resources | ||
221 | */ | ||
222 | .urb_enqueue = ohci_urb_enqueue, | ||
223 | .urb_dequeue = ohci_urb_dequeue, | ||
224 | .endpoint_disable = ohci_endpoint_disable, | ||
225 | |||
226 | /* | ||
227 | * scheduling support | ||
228 | */ | ||
229 | .get_frame_number = ohci_get_frame, | ||
230 | |||
231 | /* | ||
232 | * root hub support | ||
233 | */ | ||
234 | .hub_status_data = ohci_hub_status_data, | ||
235 | .hub_control = ohci_hub_control, | ||
236 | |||
237 | #ifdef CONFIG_PM | ||
238 | .hub_suspend = ohci_hub_suspend, | ||
239 | .hub_resume = ohci_hub_resume, | ||
240 | #endif | ||
241 | .start_port_reset = ohci_start_port_reset, | ||
242 | }; | ||
243 | |||
244 | /*-------------------------------------------------------------------------*/ | ||
245 | |||
246 | static int ohci_hcd_at91_drv_probe(struct platform_device *dev) | ||
247 | { | ||
248 | return usb_hcd_at91_probe(&ohci_at91_hc_driver, dev); | ||
249 | } | ||
250 | |||
251 | static int ohci_hcd_at91_drv_remove(struct platform_device *dev) | ||
252 | { | ||
253 | return usb_hcd_at91_remove(platform_get_drvdata(dev), dev); | ||
254 | } | ||
255 | |||
256 | #ifdef CONFIG_PM | ||
257 | static int ohci_hcd_at91_drv_suspend(struct platform_device *dev, u32 state, u32 level) | ||
258 | { | ||
259 | printk("%s(%s:%d): not implemented yet\n", | ||
260 | __func__, __FILE__, __LINE__); | ||
261 | |||
262 | clk_disable(fclk); | ||
263 | |||
264 | return 0; | ||
265 | } | ||
266 | |||
267 | static int ohci_hcd_at91_drv_resume(struct platform_device *dev, u32 state) | ||
268 | { | ||
269 | printk("%s(%s:%d): not implemented yet\n", | ||
270 | __func__, __FILE__, __LINE__); | ||
271 | |||
272 | clk_enable(fclk); | ||
273 | |||
274 | return 0; | ||
275 | } | ||
276 | #else | ||
277 | #define ohci_hcd_at91_drv_suspend NULL | ||
278 | #define ohci_hcd_at91_drv_resume NULL | ||
279 | #endif | ||
280 | |||
281 | static struct platform_driver ohci_hcd_at91_driver = { | ||
282 | .probe = ohci_hcd_at91_drv_probe, | ||
283 | .remove = ohci_hcd_at91_drv_remove, | ||
284 | .suspend = ohci_hcd_at91_drv_suspend, | ||
285 | .resume = ohci_hcd_at91_drv_resume, | ||
286 | .driver = { | ||
287 | .name = "at91rm9200-ohci", | ||
288 | .owner = THIS_MODULE, | ||
289 | }, | ||
290 | }; | ||
291 | |||
292 | static int __init ohci_hcd_at91_init (void) | ||
293 | { | ||
294 | if (usb_disabled()) | ||
295 | return -ENODEV; | ||
296 | |||
297 | return platform_driver_register(&ohci_hcd_at91_driver); | ||
298 | } | ||
299 | |||
300 | static void __exit ohci_hcd_at91_cleanup (void) | ||
301 | { | ||
302 | platform_driver_unregister(&ohci_hcd_at91_driver); | ||
303 | } | ||
304 | |||
305 | module_init (ohci_hcd_at91_init); | ||
306 | module_exit (ohci_hcd_at91_cleanup); | ||
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index a4b12404ae0..2990be26900 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c | |||
@@ -905,6 +905,10 @@ MODULE_LICENSE ("GPL"); | |||
905 | #include "ohci-ppc-soc.c" | 905 | #include "ohci-ppc-soc.c" |
906 | #endif | 906 | #endif |
907 | 907 | ||
908 | #ifdef CONFIG_ARCH_AT91RM9200 | ||
909 | #include "ohci-at91.c" | ||
910 | #endif | ||
911 | |||
908 | #if !(defined(CONFIG_PCI) \ | 912 | #if !(defined(CONFIG_PCI) \ |
909 | || defined(CONFIG_SA1111) \ | 913 | || defined(CONFIG_SA1111) \ |
910 | || defined(CONFIG_ARCH_S3C2410) \ | 914 | || defined(CONFIG_ARCH_S3C2410) \ |
@@ -913,6 +917,7 @@ MODULE_LICENSE ("GPL"); | |||
913 | || defined (CONFIG_PXA27x) \ | 917 | || defined (CONFIG_PXA27x) \ |
914 | || defined (CONFIG_SOC_AU1X00) \ | 918 | || defined (CONFIG_SOC_AU1X00) \ |
915 | || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \ | 919 | || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \ |
920 | || defined (CONFIG_ARCH_AT91RM9200) \ | ||
916 | ) | 921 | ) |
917 | #error "missing bus glue for ohci-hcd" | 922 | #error "missing bus glue for ohci-hcd" |
918 | #endif | 923 | #endif |