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Ilya Yanokeb819552012-11-06 13:48:21 +00001#include <common.h>
Heiko Schocher7a342782013-06-04 11:10:01 +02002#include <watchdog.h>
Hans de Goede246e3b82015-03-27 20:54:25 +01003#ifdef CONFIG_ARCH_SUNXI
Hans de Goede2aacc422015-04-27 15:05:10 +02004#include <asm/arch/usb_phy.h>
Hans de Goede246e3b82015-03-27 20:54:25 +01005#endif
Ilya Yanokeb819552012-11-06 13:48:21 +00006#include <asm/errno.h>
7#include <linux/usb/ch9.h>
8#include <linux/usb/gadget.h>
9
Ilya Yanokeb819552012-11-06 13:48:21 +000010#include <usb.h>
11#include "linux-compat.h"
12#include "usb-compat.h"
13#include "musb_core.h"
14#include "musb_host.h"
15#include "musb_gadget.h"
16
17#ifdef CONFIG_MUSB_HOST
Hans de Goede904f2a82015-01-11 20:34:54 +010018struct int_queue {
19 struct usb_host_endpoint hep;
20 struct urb urb;
21};
22
Ilya Yanokeb819552012-11-06 13:48:21 +000023static struct musb *host;
24static struct usb_hcd hcd;
25static enum usb_device_speed host_speed;
26
27static void musb_host_complete_urb(struct urb *urb)
28{
29 urb->dev->status &= ~USB_ST_NOT_PROC;
30 urb->dev->act_len = urb->actual_length;
31}
32
33static struct usb_host_endpoint hep;
34static struct urb urb;
35
Hans de Goedeaccf04c2015-01-11 20:34:53 +010036static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
37 struct usb_device *dev, int endpoint_type,
38 unsigned long pipe, void *buffer, int len,
39 struct devrequest *setup, int interval)
Ilya Yanokeb819552012-11-06 13:48:21 +000040{
41 int epnum = usb_pipeendpoint(pipe);
42 int is_in = usb_pipein(pipe);
43
Hans de Goedeaccf04c2015-01-11 20:34:53 +010044 memset(urb, 0, sizeof(struct urb));
45 memset(hep, 0, sizeof(struct usb_host_endpoint));
46 INIT_LIST_HEAD(&hep->urb_list);
47 INIT_LIST_HEAD(&urb->urb_list);
48 urb->ep = hep;
49 urb->complete = musb_host_complete_urb;
50 urb->status = -EINPROGRESS;
51 urb->dev = dev;
52 urb->pipe = pipe;
53 urb->transfer_buffer = buffer;
54 urb->transfer_dma = (unsigned long)buffer;
55 urb->transfer_buffer_length = len;
56 urb->setup_packet = (unsigned char *)setup;
Ilya Yanokeb819552012-11-06 13:48:21 +000057
Hans de Goedeaccf04c2015-01-11 20:34:53 +010058 urb->ep->desc.wMaxPacketSize =
Ilya Yanokeb819552012-11-06 13:48:21 +000059 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
60 dev->epmaxpacketout[epnum]);
Hans de Goedeaccf04c2015-01-11 20:34:53 +010061 urb->ep->desc.bmAttributes = endpoint_type;
62 urb->ep->desc.bEndpointAddress =
Ilya Yanokeb819552012-11-06 13:48:21 +000063 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
Hans de Goedeaccf04c2015-01-11 20:34:53 +010064 urb->ep->desc.bInterval = interval;
Ilya Yanokeb819552012-11-06 13:48:21 +000065}
66
Ilya Yanokeb819552012-11-06 13:48:21 +000067static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
68{
69 struct musb *host = hcd->hcd_priv;
70 int ret;
Hans de Goededc9a3912015-01-11 20:34:49 +010071 unsigned long timeout;
Ilya Yanokeb819552012-11-06 13:48:21 +000072
73 ret = musb_urb_enqueue(hcd, urb, 0);
74 if (ret < 0) {
75 printf("Failed to enqueue URB to controller\n");
76 return ret;
77 }
78
Hans de Goededc9a3912015-01-11 20:34:49 +010079 timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
Ilya Yanokeb819552012-11-06 13:48:21 +000080 do {
81 if (ctrlc())
82 return -EIO;
83 host->isr(0, host);
Hans de Goedee8672e32015-01-11 20:34:50 +010084 } while (urb->status == -EINPROGRESS &&
Hans de Goededc9a3912015-01-11 20:34:49 +010085 get_timer(0) < timeout);
Ilya Yanokeb819552012-11-06 13:48:21 +000086
Hans de Goedeb918a0c2015-01-11 20:34:52 +010087 if (urb->status == -EINPROGRESS)
88 musb_urb_dequeue(hcd, urb, -ETIME);
89
Ilya Yanokeb819552012-11-06 13:48:21 +000090 return urb->status;
91}
92
93int submit_control_msg(struct usb_device *dev, unsigned long pipe,
94 void *buffer, int len, struct devrequest *setup)
95{
Hans de Goedeaccf04c2015-01-11 20:34:53 +010096 construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_CONTROL, pipe,
97 buffer, len, setup, 0);
Ilya Yanokeb819552012-11-06 13:48:21 +000098
99 /* Fix speed for non hub-attached devices */
Hans de Goedee740ca32015-06-17 21:33:55 +0200100 if (!usb_dev_get_parent(dev))
Ilya Yanokeb819552012-11-06 13:48:21 +0000101 dev->speed = host_speed;
102
Hans de Goedeaccf04c2015-01-11 20:34:53 +0100103 return submit_urb(&hcd, &urb);
Ilya Yanokeb819552012-11-06 13:48:21 +0000104}
105
106
107int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
108 void *buffer, int len)
109{
Hans de Goedeaccf04c2015-01-11 20:34:53 +0100110 construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_BULK, pipe,
111 buffer, len, NULL, 0);
112 return submit_urb(&hcd, &urb);
Ilya Yanokeb819552012-11-06 13:48:21 +0000113}
114
115int submit_int_msg(struct usb_device *dev, unsigned long pipe,
116 void *buffer, int len, int interval)
117{
Hans de Goedeaccf04c2015-01-11 20:34:53 +0100118 construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_INT, pipe,
119 buffer, len, NULL, interval);
120 return submit_urb(&hcd, &urb);
Ilya Yanokeb819552012-11-06 13:48:21 +0000121}
122
Hans de Goede904f2a82015-01-11 20:34:54 +0100123struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe,
124 int queuesize, int elementsize, void *buffer, int interval)
125{
126 struct int_queue *queue;
127 int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
128
129 if (queuesize != 1) {
130 printf("ERROR musb int-queues only support queuesize 1\n");
131 return NULL;
132 }
133
134 if (dev->int_pending & (1 << index)) {
135 printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
136 return NULL;
137 }
138
139 queue = malloc(sizeof(*queue));
140 if (!queue)
141 return NULL;
142
143 construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
144 pipe, buffer, elementsize, NULL, interval);
145
146 ret = musb_urb_enqueue(&hcd, &queue->urb, 0);
147 if (ret < 0) {
148 printf("Failed to enqueue URB to controller\n");
149 free(queue);
150 return NULL;
151 }
152
153 dev->int_pending |= 1 << index;
154 return queue;
155}
156
157int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
158{
159 int index = usb_pipein(queue->urb.pipe) * 16 +
160 usb_pipeendpoint(queue->urb.pipe);
161
162 if (queue->urb.status == -EINPROGRESS)
163 musb_urb_dequeue(&hcd, &queue->urb, -ETIME);
164
165 dev->int_pending &= ~(1 << index);
166 free(queue);
167 return 0;
168}
169
170void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
171{
172 if (queue->urb.status != -EINPROGRESS)
173 return NULL; /* URB has already completed in a prev. poll */
174
175 host->isr(0, host);
176
177 if (queue->urb.status != -EINPROGRESS)
178 return queue->urb.transfer_buffer; /* Done */
179
180 return NULL; /* URB still pending */
181}
182
Hans de Goede8802f562015-06-17 21:33:48 +0200183int usb_reset_root_port(struct usb_device *dev)
Hans de Goede90cdc102015-01-11 20:34:51 +0100184{
185 void *mbase = host->mregs;
186 u8 power;
187
188 power = musb_readb(mbase, MUSB_POWER);
189 power &= 0xf0;
190 musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
191 mdelay(50);
Hans de Goede246e3b82015-03-27 20:54:25 +0100192#ifdef CONFIG_ARCH_SUNXI
193 /*
194 * sunxi phy has a bug and it will wrongly detect high speed squelch
195 * when clearing reset on low-speed devices, temporary disable
196 * squelch detection to work around this.
197 */
Hans de Goede7b798652015-04-27 14:54:47 +0200198 sunxi_usb_phy_enable_squelch_detect(0, 0);
Hans de Goede246e3b82015-03-27 20:54:25 +0100199#endif
Hans de Goede90cdc102015-01-11 20:34:51 +0100200 power = musb_readb(mbase, MUSB_POWER);
201 musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
Hans de Goede246e3b82015-03-27 20:54:25 +0100202#ifdef CONFIG_ARCH_SUNXI
Hans de Goede7b798652015-04-27 14:54:47 +0200203 sunxi_usb_phy_enable_squelch_detect(0, 1);
Hans de Goede246e3b82015-03-27 20:54:25 +0100204#endif
Hans de Goede90cdc102015-01-11 20:34:51 +0100205 host->isr(0, host);
206 host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
207 USB_SPEED_HIGH :
208 (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
209 USB_SPEED_FULL : USB_SPEED_LOW;
210 mdelay((host_speed == USB_SPEED_LOW) ? 200 : 50);
Simon Glassde312132015-03-25 12:21:59 -0600211
212 return 0;
Hans de Goede90cdc102015-01-11 20:34:51 +0100213}
214
Troy Kisky06d513e2013-10-10 15:27:56 -0700215int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
Ilya Yanokeb819552012-11-06 13:48:21 +0000216{
Ilya Yanokeb819552012-11-06 13:48:21 +0000217 void *mbase;
Hans de Goededc9a3912015-01-11 20:34:49 +0100218 /* USB spec says it may take up to 1 second for a device to connect */
219 unsigned long timeout = get_timer(0) + 1000;
Hans de Goede15837232015-06-17 21:33:54 +0200220 int ret;
Ilya Yanokeb819552012-11-06 13:48:21 +0000221
222 if (!host) {
223 printf("MUSB host is not registered\n");
224 return -ENODEV;
225 }
226
Hans de Goede15837232015-06-17 21:33:54 +0200227 ret = musb_start(host);
228 if (ret)
229 return ret;
230
Ilya Yanokeb819552012-11-06 13:48:21 +0000231 mbase = host->mregs;
232 do {
233 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
234 break;
Hans de Goededc9a3912015-01-11 20:34:49 +0100235 } while (get_timer(0) < timeout);
236 if (get_timer(0) >= timeout)
Ilya Yanokeb819552012-11-06 13:48:21 +0000237 return -ENODEV;
238
Hans de Goede8802f562015-06-17 21:33:48 +0200239 usb_reset_root_port(NULL);
Ilya Yanokeb819552012-11-06 13:48:21 +0000240 host->is_active = 1;
241 hcd.hcd_priv = host;
242
243 return 0;
244}
245
246int usb_lowlevel_stop(int index)
247{
248 if (!host) {
249 printf("MUSB host is not registered\n");
250 return -ENODEV;
251 }
252
253 musb_stop(host);
254 return 0;
255}
256#endif /* CONFIG_MUSB_HOST */
257
258#ifdef CONFIG_MUSB_GADGET
259static struct musb *gadget;
260
Kishon Vijay Abraham I2d48aa62015-02-23 18:40:23 +0530261int usb_gadget_handle_interrupts(int index)
Ilya Yanokeb819552012-11-06 13:48:21 +0000262{
Heiko Schocher7a342782013-06-04 11:10:01 +0200263 WATCHDOG_RESET();
Ilya Yanokeb819552012-11-06 13:48:21 +0000264 if (!gadget || !gadget->isr)
265 return -EINVAL;
266
267 return gadget->isr(0, gadget);
268}
269
270int usb_gadget_register_driver(struct usb_gadget_driver *driver)
271{
272 int ret;
273
Bin Liu76b09b82013-03-21 05:27:49 +0000274 if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
Ilya Yanokeb819552012-11-06 13:48:21 +0000275 !driver->setup) {
276 printf("bad parameter.\n");
277 return -EINVAL;
278 }
279
280 if (!gadget) {
281 printf("Controller uninitialized\n");
282 return -ENXIO;
283 }
284
285 ret = musb_gadget_start(&gadget->g, driver);
286 if (ret < 0) {
287 printf("gadget_start failed with %d\n", ret);
288 return ret;
289 }
290
291 ret = driver->bind(&gadget->g);
292 if (ret < 0) {
293 printf("bind failed with %d\n", ret);
294 return ret;
295 }
296
297 return 0;
298}
299
300int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
301{
Rob Herring078d7302014-04-18 08:54:30 -0500302 if (driver->disconnect)
303 driver->disconnect(&gadget->g);
304 if (driver->unbind)
305 driver->unbind(&gadget->g);
Ilya Yanokeb819552012-11-06 13:48:21 +0000306 return 0;
307}
308#endif /* CONFIG_MUSB_GADGET */
309
310int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
311 void *ctl_regs)
312{
313 struct musb **musbp;
314
315 switch (plat->mode) {
316#ifdef CONFIG_MUSB_HOST
317 case MUSB_HOST:
318 musbp = &host;
319 break;
320#endif
321#ifdef CONFIG_MUSB_GADGET
322 case MUSB_PERIPHERAL:
323 musbp = &gadget;
324 break;
325#endif
326 default:
327 return -EINVAL;
328 }
329
330 *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
331 if (!musbp) {
332 printf("Failed to init the controller\n");
333 return -EIO;
334 }
335
336 return 0;
337}