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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
0f64478c GKH |
2 | /* |
3 | * mos7720.c | |
cd8c5053 | 4 | * Controls the Moschip 7720 usb to dual port serial converter |
0f64478c GKH |
5 | * |
6 | * Copyright 2006 Moschip Semiconductor Tech. Ltd. | |
7 | * | |
0f64478c | 8 | * Developed by: |
50d2dc72 GKH |
9 | * Vijaya Kumar <vijaykumar.gn@gmail.com> |
10 | * Ajay Kumar <naanuajay@yahoo.com> | |
11 | * Gurudeva <ngurudeva@yahoo.com> | |
0f64478c GKH |
12 | * |
13 | * Cleaned up from the original by: | |
14 | * Greg Kroah-Hartman <gregkh@suse.de> | |
15 | * | |
16 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
17 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
18 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
19 | */ | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/errno.h> | |
0f64478c GKH |
22 | #include <linux/slab.h> |
23 | #include <linux/tty.h> | |
24 | #include <linux/tty_driver.h> | |
25 | #include <linux/tty_flip.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/spinlock.h> | |
28 | #include <linux/serial.h> | |
29 | #include <linux/serial_reg.h> | |
30 | #include <linux/usb.h> | |
31 | #include <linux/usb/serial.h> | |
4da1a17d | 32 | #include <linux/uaccess.h> |
b69578df | 33 | #include <linux/parport.h> |
0f64478c | 34 | |
0f64478c GKH |
35 | #define DRIVER_AUTHOR "Aspire Communications pvt Ltd." |
36 | #define DRIVER_DESC "Moschip USB Serial Driver" | |
37 | ||
38 | /* default urb timeout */ | |
849513a7 | 39 | #define MOS_WDR_TIMEOUT 5000 |
0f64478c | 40 | |
0f64478c GKH |
41 | #define MOS_MAX_PORT 0x02 |
42 | #define MOS_WRITE 0x0E | |
43 | #define MOS_READ 0x0D | |
44 | ||
cd8c5053 | 45 | /* Interrupt Routines Defines */ |
0f64478c GKH |
46 | #define SERIAL_IIR_RLS 0x06 |
47 | #define SERIAL_IIR_RDA 0x04 | |
48 | #define SERIAL_IIR_CTI 0x0c | |
49 | #define SERIAL_IIR_THR 0x02 | |
50 | #define SERIAL_IIR_MS 0x00 | |
51 | ||
52 | #define NUM_URBS 16 /* URB Count */ | |
53 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
54 | ||
b69578df | 55 | /* This structure holds all of the local serial port information */ |
4da1a17d | 56 | struct moschip_port { |
0f64478c GKH |
57 | __u8 shadowLCR; /* last LCR value received */ |
58 | __u8 shadowMCR; /* last MCR value received */ | |
59 | __u8 shadowMSR; /* last MSR value received */ | |
60 | char open; | |
0f64478c GKH |
61 | struct usb_serial_port *port; /* loop back to the owner */ |
62 | struct urb *write_urb_pool[NUM_URBS]; | |
63 | }; | |
64 | ||
0f64478c GKH |
65 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
66 | #define MOSCHIP_DEVICE_ID_7720 0x7720 | |
67 | #define MOSCHIP_DEVICE_ID_7715 0x7715 | |
68 | ||
68e24113 | 69 | static const struct usb_device_id id_table[] = { |
4da1a17d | 70 | { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7720) }, |
fb088e33 | 71 | { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7715) }, |
0f64478c GKH |
72 | { } /* terminating entry */ |
73 | }; | |
68e24113 | 74 | MODULE_DEVICE_TABLE(usb, id_table); |
0f64478c | 75 | |
b69578df MD |
76 | #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT |
77 | ||
78 | /* initial values for parport regs */ | |
79 | #define DCR_INIT_VAL 0x0c /* SLCTIN, nINIT */ | |
80 | #define ECR_INIT_VAL 0x00 /* SPP mode */ | |
81 | ||
82 | struct urbtracker { | |
83 | struct mos7715_parport *mos_parport; | |
84 | struct list_head urblist_entry; | |
85 | struct kref ref_count; | |
86 | struct urb *urb; | |
ef6c8c1d | 87 | struct usb_ctrlrequest *setup; |
b69578df MD |
88 | }; |
89 | ||
90 | enum mos7715_pp_modes { | |
91 | SPP = 0<<5, | |
92 | PS2 = 1<<5, /* moschip calls this 'NIBBLE' mode */ | |
93 | PPF = 2<<5, /* moschip calls this 'CB-FIFO mode */ | |
94 | }; | |
95 | ||
96 | struct mos7715_parport { | |
97 | struct parport *pp; /* back to containing struct */ | |
98 | struct kref ref_count; /* to instance of this struct */ | |
99 | struct list_head deferred_urbs; /* list deferred async urbs */ | |
100 | struct list_head active_urbs; /* list async urbs in flight */ | |
101 | spinlock_t listlock; /* protects list access */ | |
102 | bool msg_pending; /* usb sync call pending */ | |
103 | struct completion syncmsg_compl; /* usb sync call completed */ | |
104 | struct tasklet_struct urb_tasklet; /* for sending deferred urbs */ | |
105 | struct usb_serial *serial; /* back to containing struct */ | |
106 | __u8 shadowECR; /* parallel port regs... */ | |
107 | __u8 shadowDCR; | |
108 | atomic_t shadowDSR; /* updated in int-in callback */ | |
109 | }; | |
110 | ||
111 | /* lock guards against dereferencing NULL ptr in parport ops callbacks */ | |
112 | static DEFINE_SPINLOCK(release_lock); | |
113 | ||
63b91767 MD |
114 | #endif /* CONFIG_USB_SERIAL_MOS7715_PARPORT */ |
115 | ||
116 | static const unsigned int dummy; /* for clarity in register access fns */ | |
117 | ||
b69578df | 118 | enum mos_regs { |
ee5729ec SM |
119 | MOS7720_THR, /* serial port regs */ |
120 | MOS7720_RHR, | |
121 | MOS7720_IER, | |
122 | MOS7720_FCR, | |
123 | MOS7720_ISR, | |
124 | MOS7720_LCR, | |
125 | MOS7720_MCR, | |
126 | MOS7720_LSR, | |
127 | MOS7720_MSR, | |
128 | MOS7720_SPR, | |
129 | MOS7720_DLL, | |
130 | MOS7720_DLM, | |
131 | MOS7720_DPR, /* parallel port regs */ | |
132 | MOS7720_DSR, | |
133 | MOS7720_DCR, | |
134 | MOS7720_ECR, | |
135 | MOS7720_SP1_REG, /* device control regs */ | |
136 | MOS7720_SP2_REG, /* serial port 2 (7720 only) */ | |
137 | MOS7720_PP_REG, | |
138 | MOS7720_SP_CONTROL_REG, | |
b69578df MD |
139 | }; |
140 | ||
141 | /* | |
142 | * Return the correct value for the Windex field of the setup packet | |
143 | * for a control endpoint message. See the 7715 datasheet. | |
144 | */ | |
145 | static inline __u16 get_reg_index(enum mos_regs reg) | |
146 | { | |
147 | static const __u16 mos7715_index_lookup_table[] = { | |
ee5729ec SM |
148 | 0x00, /* MOS7720_THR */ |
149 | 0x00, /* MOS7720_RHR */ | |
150 | 0x01, /* MOS7720_IER */ | |
151 | 0x02, /* MOS7720_FCR */ | |
152 | 0x02, /* MOS7720_ISR */ | |
153 | 0x03, /* MOS7720_LCR */ | |
154 | 0x04, /* MOS7720_MCR */ | |
155 | 0x05, /* MOS7720_LSR */ | |
156 | 0x06, /* MOS7720_MSR */ | |
157 | 0x07, /* MOS7720_SPR */ | |
158 | 0x00, /* MOS7720_DLL */ | |
159 | 0x01, /* MOS7720_DLM */ | |
160 | 0x00, /* MOS7720_DPR */ | |
161 | 0x01, /* MOS7720_DSR */ | |
162 | 0x02, /* MOS7720_DCR */ | |
163 | 0x0a, /* MOS7720_ECR */ | |
164 | 0x01, /* MOS7720_SP1_REG */ | |
165 | 0x02, /* MOS7720_SP2_REG (7720 only) */ | |
166 | 0x04, /* MOS7720_PP_REG (7715 only) */ | |
167 | 0x08, /* MOS7720_SP_CONTROL_REG */ | |
b69578df MD |
168 | }; |
169 | return mos7715_index_lookup_table[reg]; | |
170 | } | |
171 | ||
172 | /* | |
173 | * Return the correct value for the upper byte of the Wvalue field of | |
174 | * the setup packet for a control endpoint message. | |
175 | */ | |
63b91767 MD |
176 | static inline __u16 get_reg_value(enum mos_regs reg, |
177 | unsigned int serial_portnum) | |
b69578df | 178 | { |
ee5729ec | 179 | if (reg >= MOS7720_SP1_REG) /* control reg */ |
b69578df | 180 | return 0x0000; |
63b91767 | 181 | |
ee5729ec | 182 | else if (reg >= MOS7720_DPR) /* parallel port reg (7715 only) */ |
b69578df | 183 | return 0x0100; |
63b91767 MD |
184 | |
185 | else /* serial port reg */ | |
186 | return (serial_portnum + 2) << 8; | |
b69578df MD |
187 | } |
188 | ||
189 | /* | |
190 | * Write data byte to the specified device register. The data is embedded in | |
63b91767 MD |
191 | * the value field of the setup packet. serial_portnum is ignored for registers |
192 | * not specific to a particular serial port. | |
b69578df | 193 | */ |
63b91767 MD |
194 | static int write_mos_reg(struct usb_serial *serial, unsigned int serial_portnum, |
195 | enum mos_regs reg, __u8 data) | |
b69578df | 196 | { |
b69578df MD |
197 | struct usb_device *usbdev = serial->dev; |
198 | unsigned int pipe = usb_sndctrlpipe(usbdev, 0); | |
199 | __u8 request = (__u8)0x0e; | |
200 | __u8 requesttype = (__u8)0x40; | |
b69578df | 201 | __u16 index = get_reg_index(reg); |
63b91767 MD |
202 | __u16 value = get_reg_value(reg, serial_portnum) + data; |
203 | int status = usb_control_msg(usbdev, pipe, request, requesttype, value, | |
204 | index, NULL, 0, MOS_WDR_TIMEOUT); | |
b69578df MD |
205 | if (status < 0) |
206 | dev_err(&usbdev->dev, | |
d9a38a87 | 207 | "mos7720: usb_control_msg() failed: %d\n", status); |
b69578df MD |
208 | return status; |
209 | } | |
210 | ||
211 | /* | |
212 | * Read data byte from the specified device register. The data returned by the | |
63b91767 MD |
213 | * device is embedded in the value field of the setup packet. serial_portnum is |
214 | * ignored for registers that are not specific to a particular serial port. | |
b69578df | 215 | */ |
63b91767 MD |
216 | static int read_mos_reg(struct usb_serial *serial, unsigned int serial_portnum, |
217 | enum mos_regs reg, __u8 *data) | |
b69578df | 218 | { |
63b91767 | 219 | struct usb_device *usbdev = serial->dev; |
b69578df MD |
220 | unsigned int pipe = usb_rcvctrlpipe(usbdev, 0); |
221 | __u8 request = (__u8)0x0d; | |
222 | __u8 requesttype = (__u8)0xc0; | |
b69578df | 223 | __u16 index = get_reg_index(reg); |
63b91767 | 224 | __u16 value = get_reg_value(reg, serial_portnum); |
72ea18a5 JH |
225 | u8 *buf; |
226 | int status; | |
227 | ||
228 | buf = kmalloc(1, GFP_KERNEL); | |
229 | if (!buf) | |
230 | return -ENOMEM; | |
231 | ||
232 | status = usb_control_msg(usbdev, pipe, request, requesttype, value, | |
233 | index, buf, 1, MOS_WDR_TIMEOUT); | |
0d130367 | 234 | if (status == 1) { |
72ea18a5 | 235 | *data = *buf; |
0d130367 | 236 | } else { |
b69578df | 237 | dev_err(&usbdev->dev, |
d9a38a87 | 238 | "mos7720: usb_control_msg() failed: %d\n", status); |
0d130367 JH |
239 | if (status >= 0) |
240 | status = -EIO; | |
241 | *data = 0; | |
242 | } | |
243 | ||
72ea18a5 JH |
244 | kfree(buf); |
245 | ||
b69578df MD |
246 | return status; |
247 | } | |
248 | ||
63b91767 MD |
249 | #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT |
250 | ||
b69578df MD |
251 | static inline int mos7715_change_mode(struct mos7715_parport *mos_parport, |
252 | enum mos7715_pp_modes mode) | |
253 | { | |
254 | mos_parport->shadowECR = mode; | |
ee5729ec SM |
255 | write_mos_reg(mos_parport->serial, dummy, MOS7720_ECR, |
256 | mos_parport->shadowECR); | |
b69578df MD |
257 | return 0; |
258 | } | |
259 | ||
260 | static void destroy_mos_parport(struct kref *kref) | |
261 | { | |
262 | struct mos7715_parport *mos_parport = | |
263 | container_of(kref, struct mos7715_parport, ref_count); | |
264 | ||
b69578df MD |
265 | kfree(mos_parport); |
266 | } | |
267 | ||
268 | static void destroy_urbtracker(struct kref *kref) | |
269 | { | |
270 | struct urbtracker *urbtrack = | |
271 | container_of(kref, struct urbtracker, ref_count); | |
272 | struct mos7715_parport *mos_parport = urbtrack->mos_parport; | |
ca09907d | 273 | |
b69578df | 274 | usb_free_urb(urbtrack->urb); |
ef6c8c1d | 275 | kfree(urbtrack->setup); |
b69578df MD |
276 | kfree(urbtrack); |
277 | kref_put(&mos_parport->ref_count, destroy_mos_parport); | |
278 | } | |
279 | ||
280 | /* | |
281 | * This runs as a tasklet when sending an urb in a non-blocking parallel | |
282 | * port callback had to be deferred because the disconnect mutex could not be | |
283 | * obtained at the time. | |
284 | */ | |
285 | static void send_deferred_urbs(unsigned long _mos_parport) | |
286 | { | |
287 | int ret_val; | |
288 | unsigned long flags; | |
289 | struct mos7715_parport *mos_parport = (void *)_mos_parport; | |
67990472 | 290 | struct urbtracker *urbtrack, *tmp; |
b69578df | 291 | struct list_head *cursor, *next; |
9eecf808 | 292 | struct device *dev; |
b69578df | 293 | |
b69578df MD |
294 | /* if release function ran, game over */ |
295 | if (unlikely(mos_parport->serial == NULL)) | |
296 | return; | |
297 | ||
9eecf808 GKH |
298 | dev = &mos_parport->serial->dev->dev; |
299 | ||
b69578df MD |
300 | /* try again to get the mutex */ |
301 | if (!mutex_trylock(&mos_parport->serial->disc_mutex)) { | |
9eecf808 | 302 | dev_dbg(dev, "%s: rescheduling tasklet\n", __func__); |
b69578df MD |
303 | tasklet_schedule(&mos_parport->urb_tasklet); |
304 | return; | |
305 | } | |
306 | ||
307 | /* if device disconnected, game over */ | |
308 | if (unlikely(mos_parport->serial->disconnected)) { | |
309 | mutex_unlock(&mos_parport->serial->disc_mutex); | |
310 | return; | |
311 | } | |
312 | ||
313 | spin_lock_irqsave(&mos_parport->listlock, flags); | |
314 | if (list_empty(&mos_parport->deferred_urbs)) { | |
315 | spin_unlock_irqrestore(&mos_parport->listlock, flags); | |
316 | mutex_unlock(&mos_parport->serial->disc_mutex); | |
9eecf808 | 317 | dev_dbg(dev, "%s: deferred_urbs list empty\n", __func__); |
b69578df MD |
318 | return; |
319 | } | |
320 | ||
321 | /* move contents of deferred_urbs list to active_urbs list and submit */ | |
322 | list_for_each_safe(cursor, next, &mos_parport->deferred_urbs) | |
323 | list_move_tail(cursor, &mos_parport->active_urbs); | |
67990472 | 324 | list_for_each_entry_safe(urbtrack, tmp, &mos_parport->active_urbs, |
b69578df MD |
325 | urblist_entry) { |
326 | ret_val = usb_submit_urb(urbtrack->urb, GFP_ATOMIC); | |
9eecf808 | 327 | dev_dbg(dev, "%s: urb submitted\n", __func__); |
b69578df | 328 | if (ret_val) { |
9eecf808 | 329 | dev_err(dev, "usb_submit_urb() failed: %d\n", ret_val); |
b69578df MD |
330 | list_del(&urbtrack->urblist_entry); |
331 | kref_put(&urbtrack->ref_count, destroy_urbtracker); | |
332 | } | |
333 | } | |
334 | spin_unlock_irqrestore(&mos_parport->listlock, flags); | |
335 | mutex_unlock(&mos_parport->serial->disc_mutex); | |
336 | } | |
337 | ||
338 | /* callback for parallel port control urbs submitted asynchronously */ | |
339 | static void async_complete(struct urb *urb) | |
340 | { | |
341 | struct urbtracker *urbtrack = urb->context; | |
342 | int status = urb->status; | |
f7c8a9cc | 343 | unsigned long flags; |
ca09907d | 344 | |
b69578df | 345 | if (unlikely(status)) |
9eecf808 | 346 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); |
b69578df MD |
347 | |
348 | /* remove the urbtracker from the active_urbs list */ | |
f7c8a9cc | 349 | spin_lock_irqsave(&urbtrack->mos_parport->listlock, flags); |
b69578df | 350 | list_del(&urbtrack->urblist_entry); |
f7c8a9cc | 351 | spin_unlock_irqrestore(&urbtrack->mos_parport->listlock, flags); |
b69578df MD |
352 | kref_put(&urbtrack->ref_count, destroy_urbtracker); |
353 | } | |
354 | ||
355 | static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, | |
356 | enum mos_regs reg, __u8 data) | |
357 | { | |
358 | struct urbtracker *urbtrack; | |
359 | int ret_val; | |
360 | unsigned long flags; | |
b69578df MD |
361 | struct usb_serial *serial = mos_parport->serial; |
362 | struct usb_device *usbdev = serial->dev; | |
b69578df MD |
363 | |
364 | /* create and initialize the control urb and containing urbtracker */ | |
365 | urbtrack = kmalloc(sizeof(struct urbtracker), GFP_ATOMIC); | |
10c642d0 | 366 | if (!urbtrack) |
b69578df | 367 | return -ENOMEM; |
10c642d0 | 368 | |
b69578df | 369 | urbtrack->urb = usb_alloc_urb(0, GFP_ATOMIC); |
10c642d0 | 370 | if (!urbtrack->urb) { |
b69578df MD |
371 | kfree(urbtrack); |
372 | return -ENOMEM; | |
373 | } | |
d0bd9a41 | 374 | urbtrack->setup = kmalloc(sizeof(*urbtrack->setup), GFP_ATOMIC); |
ef6c8c1d JH |
375 | if (!urbtrack->setup) { |
376 | usb_free_urb(urbtrack->urb); | |
377 | kfree(urbtrack); | |
378 | return -ENOMEM; | |
379 | } | |
380 | urbtrack->setup->bRequestType = (__u8)0x40; | |
381 | urbtrack->setup->bRequest = (__u8)0x0e; | |
3b716caf JH |
382 | urbtrack->setup->wValue = cpu_to_le16(get_reg_value(reg, dummy)); |
383 | urbtrack->setup->wIndex = cpu_to_le16(get_reg_index(reg)); | |
ef6c8c1d | 384 | urbtrack->setup->wLength = 0; |
b69578df MD |
385 | usb_fill_control_urb(urbtrack->urb, usbdev, |
386 | usb_sndctrlpipe(usbdev, 0), | |
ef6c8c1d | 387 | (unsigned char *)urbtrack->setup, |
b69578df | 388 | NULL, 0, async_complete, urbtrack); |
2908b076 LY |
389 | kref_get(&mos_parport->ref_count); |
390 | urbtrack->mos_parport = mos_parport; | |
b69578df MD |
391 | kref_init(&urbtrack->ref_count); |
392 | INIT_LIST_HEAD(&urbtrack->urblist_entry); | |
393 | ||
394 | /* | |
395 | * get the disconnect mutex, or add tracker to the deferred_urbs list | |
396 | * and schedule a tasklet to try again later | |
397 | */ | |
398 | if (!mutex_trylock(&serial->disc_mutex)) { | |
399 | spin_lock_irqsave(&mos_parport->listlock, flags); | |
400 | list_add_tail(&urbtrack->urblist_entry, | |
401 | &mos_parport->deferred_urbs); | |
402 | spin_unlock_irqrestore(&mos_parport->listlock, flags); | |
403 | tasklet_schedule(&mos_parport->urb_tasklet); | |
d9a38a87 | 404 | dev_dbg(&usbdev->dev, "tasklet scheduled\n"); |
b69578df MD |
405 | return 0; |
406 | } | |
407 | ||
408 | /* bail if device disconnected */ | |
409 | if (serial->disconnected) { | |
410 | kref_put(&urbtrack->ref_count, destroy_urbtracker); | |
411 | mutex_unlock(&serial->disc_mutex); | |
412 | return -ENODEV; | |
413 | } | |
414 | ||
415 | /* add the tracker to the active_urbs list and submit */ | |
416 | spin_lock_irqsave(&mos_parport->listlock, flags); | |
417 | list_add_tail(&urbtrack->urblist_entry, &mos_parport->active_urbs); | |
418 | spin_unlock_irqrestore(&mos_parport->listlock, flags); | |
419 | ret_val = usb_submit_urb(urbtrack->urb, GFP_ATOMIC); | |
420 | mutex_unlock(&serial->disc_mutex); | |
421 | if (ret_val) { | |
422 | dev_err(&usbdev->dev, | |
d9a38a87 | 423 | "%s: submit_urb() failed: %d\n", __func__, ret_val); |
b69578df MD |
424 | spin_lock_irqsave(&mos_parport->listlock, flags); |
425 | list_del(&urbtrack->urblist_entry); | |
426 | spin_unlock_irqrestore(&mos_parport->listlock, flags); | |
427 | kref_put(&urbtrack->ref_count, destroy_urbtracker); | |
428 | return ret_val; | |
429 | } | |
430 | return 0; | |
431 | } | |
432 | ||
433 | /* | |
434 | * This is the the common top part of all parallel port callback operations that | |
435 | * send synchronous messages to the device. This implements convoluted locking | |
436 | * that avoids two scenarios: (1) a port operation is called after usbserial | |
437 | * has called our release function, at which point struct mos7715_parport has | |
438 | * been destroyed, and (2) the device has been disconnected, but usbserial has | |
439 | * not called the release function yet because someone has a serial port open. | |
440 | * The shared release_lock prevents the first, and the mutex and disconnected | |
441 | * flag maintained by usbserial covers the second. We also use the msg_pending | |
cd8c5053 | 442 | * flag to ensure that all synchronous usb message calls have completed before |
b69578df MD |
443 | * our release function can return. |
444 | */ | |
445 | static int parport_prologue(struct parport *pp) | |
446 | { | |
447 | struct mos7715_parport *mos_parport; | |
448 | ||
449 | spin_lock(&release_lock); | |
450 | mos_parport = pp->private_data; | |
451 | if (unlikely(mos_parport == NULL)) { | |
452 | /* release fn called, port struct destroyed */ | |
453 | spin_unlock(&release_lock); | |
454 | return -1; | |
455 | } | |
456 | mos_parport->msg_pending = true; /* synch usb call pending */ | |
16735d02 | 457 | reinit_completion(&mos_parport->syncmsg_compl); |
b69578df MD |
458 | spin_unlock(&release_lock); |
459 | ||
460 | mutex_lock(&mos_parport->serial->disc_mutex); | |
461 | if (mos_parport->serial->disconnected) { | |
462 | /* device disconnected */ | |
463 | mutex_unlock(&mos_parport->serial->disc_mutex); | |
464 | mos_parport->msg_pending = false; | |
465 | complete(&mos_parport->syncmsg_compl); | |
466 | return -1; | |
467 | } | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | /* | |
cd8c5053 | 473 | * This is the common bottom part of all parallel port functions that send |
b69578df MD |
474 | * synchronous messages to the device. |
475 | */ | |
476 | static inline void parport_epilogue(struct parport *pp) | |
477 | { | |
478 | struct mos7715_parport *mos_parport = pp->private_data; | |
479 | mutex_unlock(&mos_parport->serial->disc_mutex); | |
480 | mos_parport->msg_pending = false; | |
481 | complete(&mos_parport->syncmsg_compl); | |
482 | } | |
483 | ||
484 | static void parport_mos7715_write_data(struct parport *pp, unsigned char d) | |
485 | { | |
486 | struct mos7715_parport *mos_parport = pp->private_data; | |
ca09907d | 487 | |
b69578df MD |
488 | if (parport_prologue(pp) < 0) |
489 | return; | |
490 | mos7715_change_mode(mos_parport, SPP); | |
ee5729ec | 491 | write_mos_reg(mos_parport->serial, dummy, MOS7720_DPR, (__u8)d); |
b69578df MD |
492 | parport_epilogue(pp); |
493 | } | |
494 | ||
495 | static unsigned char parport_mos7715_read_data(struct parport *pp) | |
496 | { | |
497 | struct mos7715_parport *mos_parport = pp->private_data; | |
498 | unsigned char d; | |
ca09907d | 499 | |
b69578df MD |
500 | if (parport_prologue(pp) < 0) |
501 | return 0; | |
ee5729ec | 502 | read_mos_reg(mos_parport->serial, dummy, MOS7720_DPR, &d); |
b69578df MD |
503 | parport_epilogue(pp); |
504 | return d; | |
505 | } | |
506 | ||
507 | static void parport_mos7715_write_control(struct parport *pp, unsigned char d) | |
508 | { | |
509 | struct mos7715_parport *mos_parport = pp->private_data; | |
510 | __u8 data; | |
ca09907d | 511 | |
b69578df MD |
512 | if (parport_prologue(pp) < 0) |
513 | return; | |
514 | data = ((__u8)d & 0x0f) | (mos_parport->shadowDCR & 0xf0); | |
ee5729ec | 515 | write_mos_reg(mos_parport->serial, dummy, MOS7720_DCR, data); |
b69578df MD |
516 | mos_parport->shadowDCR = data; |
517 | parport_epilogue(pp); | |
518 | } | |
519 | ||
520 | static unsigned char parport_mos7715_read_control(struct parport *pp) | |
521 | { | |
f0b4198f | 522 | struct mos7715_parport *mos_parport; |
b69578df | 523 | __u8 dcr; |
ca09907d | 524 | |
b69578df MD |
525 | spin_lock(&release_lock); |
526 | mos_parport = pp->private_data; | |
527 | if (unlikely(mos_parport == NULL)) { | |
528 | spin_unlock(&release_lock); | |
529 | return 0; | |
530 | } | |
531 | dcr = mos_parport->shadowDCR & 0x0f; | |
532 | spin_unlock(&release_lock); | |
533 | return dcr; | |
534 | } | |
535 | ||
536 | static unsigned char parport_mos7715_frob_control(struct parport *pp, | |
537 | unsigned char mask, | |
538 | unsigned char val) | |
539 | { | |
540 | struct mos7715_parport *mos_parport = pp->private_data; | |
541 | __u8 dcr; | |
ca09907d | 542 | |
b69578df MD |
543 | mask &= 0x0f; |
544 | val &= 0x0f; | |
545 | if (parport_prologue(pp) < 0) | |
546 | return 0; | |
547 | mos_parport->shadowDCR = (mos_parport->shadowDCR & (~mask)) ^ val; | |
ee5729ec SM |
548 | write_mos_reg(mos_parport->serial, dummy, MOS7720_DCR, |
549 | mos_parport->shadowDCR); | |
b69578df MD |
550 | dcr = mos_parport->shadowDCR & 0x0f; |
551 | parport_epilogue(pp); | |
552 | return dcr; | |
553 | } | |
554 | ||
555 | static unsigned char parport_mos7715_read_status(struct parport *pp) | |
556 | { | |
557 | unsigned char status; | |
f0b4198f | 558 | struct mos7715_parport *mos_parport; |
ca09907d | 559 | |
b69578df MD |
560 | spin_lock(&release_lock); |
561 | mos_parport = pp->private_data; | |
562 | if (unlikely(mos_parport == NULL)) { /* release called */ | |
563 | spin_unlock(&release_lock); | |
564 | return 0; | |
565 | } | |
566 | status = atomic_read(&mos_parport->shadowDSR) & 0xf8; | |
567 | spin_unlock(&release_lock); | |
568 | return status; | |
569 | } | |
570 | ||
571 | static void parport_mos7715_enable_irq(struct parport *pp) | |
572 | { | |
b69578df | 573 | } |
ca09907d | 574 | |
b69578df MD |
575 | static void parport_mos7715_disable_irq(struct parport *pp) |
576 | { | |
b69578df MD |
577 | } |
578 | ||
579 | static void parport_mos7715_data_forward(struct parport *pp) | |
580 | { | |
581 | struct mos7715_parport *mos_parport = pp->private_data; | |
ca09907d | 582 | |
b69578df MD |
583 | if (parport_prologue(pp) < 0) |
584 | return; | |
585 | mos7715_change_mode(mos_parport, PS2); | |
586 | mos_parport->shadowDCR &= ~0x20; | |
ee5729ec SM |
587 | write_mos_reg(mos_parport->serial, dummy, MOS7720_DCR, |
588 | mos_parport->shadowDCR); | |
b69578df MD |
589 | parport_epilogue(pp); |
590 | } | |
591 | ||
592 | static void parport_mos7715_data_reverse(struct parport *pp) | |
593 | { | |
594 | struct mos7715_parport *mos_parport = pp->private_data; | |
ca09907d | 595 | |
b69578df MD |
596 | if (parport_prologue(pp) < 0) |
597 | return; | |
598 | mos7715_change_mode(mos_parport, PS2); | |
599 | mos_parport->shadowDCR |= 0x20; | |
ee5729ec SM |
600 | write_mos_reg(mos_parport->serial, dummy, MOS7720_DCR, |
601 | mos_parport->shadowDCR); | |
b69578df MD |
602 | parport_epilogue(pp); |
603 | } | |
604 | ||
605 | static void parport_mos7715_init_state(struct pardevice *dev, | |
606 | struct parport_state *s) | |
607 | { | |
b69578df MD |
608 | s->u.pc.ctr = DCR_INIT_VAL; |
609 | s->u.pc.ecr = ECR_INIT_VAL; | |
610 | } | |
611 | ||
612 | /* N.B. Parport core code requires that this function not block */ | |
613 | static void parport_mos7715_save_state(struct parport *pp, | |
614 | struct parport_state *s) | |
615 | { | |
616 | struct mos7715_parport *mos_parport; | |
ca09907d | 617 | |
b69578df MD |
618 | spin_lock(&release_lock); |
619 | mos_parport = pp->private_data; | |
620 | if (unlikely(mos_parport == NULL)) { /* release called */ | |
621 | spin_unlock(&release_lock); | |
622 | return; | |
623 | } | |
624 | s->u.pc.ctr = mos_parport->shadowDCR; | |
625 | s->u.pc.ecr = mos_parport->shadowECR; | |
626 | spin_unlock(&release_lock); | |
627 | } | |
628 | ||
629 | /* N.B. Parport core code requires that this function not block */ | |
630 | static void parport_mos7715_restore_state(struct parport *pp, | |
631 | struct parport_state *s) | |
632 | { | |
633 | struct mos7715_parport *mos_parport; | |
ca09907d | 634 | |
b69578df MD |
635 | spin_lock(&release_lock); |
636 | mos_parport = pp->private_data; | |
637 | if (unlikely(mos_parport == NULL)) { /* release called */ | |
638 | spin_unlock(&release_lock); | |
639 | return; | |
640 | } | |
ee5729ec SM |
641 | write_parport_reg_nonblock(mos_parport, MOS7720_DCR, |
642 | mos_parport->shadowDCR); | |
643 | write_parport_reg_nonblock(mos_parport, MOS7720_ECR, | |
644 | mos_parport->shadowECR); | |
b69578df MD |
645 | spin_unlock(&release_lock); |
646 | } | |
647 | ||
648 | static size_t parport_mos7715_write_compat(struct parport *pp, | |
649 | const void *buffer, | |
650 | size_t len, int flags) | |
651 | { | |
652 | int retval; | |
653 | struct mos7715_parport *mos_parport = pp->private_data; | |
654 | int actual_len; | |
ca09907d | 655 | |
b69578df MD |
656 | if (parport_prologue(pp) < 0) |
657 | return 0; | |
658 | mos7715_change_mode(mos_parport, PPF); | |
659 | retval = usb_bulk_msg(mos_parport->serial->dev, | |
660 | usb_sndbulkpipe(mos_parport->serial->dev, 2), | |
661 | (void *)buffer, len, &actual_len, | |
662 | MOS_WDR_TIMEOUT); | |
663 | parport_epilogue(pp); | |
664 | if (retval) { | |
665 | dev_err(&mos_parport->serial->dev->dev, | |
d9a38a87 | 666 | "mos7720: usb_bulk_msg() failed: %d\n", retval); |
b69578df MD |
667 | return 0; |
668 | } | |
669 | return actual_len; | |
670 | } | |
671 | ||
672 | static struct parport_operations parport_mos7715_ops = { | |
673 | .owner = THIS_MODULE, | |
674 | .write_data = parport_mos7715_write_data, | |
675 | .read_data = parport_mos7715_read_data, | |
676 | ||
677 | .write_control = parport_mos7715_write_control, | |
678 | .read_control = parport_mos7715_read_control, | |
679 | .frob_control = parport_mos7715_frob_control, | |
680 | ||
681 | .read_status = parport_mos7715_read_status, | |
682 | ||
683 | .enable_irq = parport_mos7715_enable_irq, | |
684 | .disable_irq = parport_mos7715_disable_irq, | |
685 | ||
686 | .data_forward = parport_mos7715_data_forward, | |
687 | .data_reverse = parport_mos7715_data_reverse, | |
688 | ||
689 | .init_state = parport_mos7715_init_state, | |
690 | .save_state = parport_mos7715_save_state, | |
691 | .restore_state = parport_mos7715_restore_state, | |
692 | ||
693 | .compat_write_data = parport_mos7715_write_compat, | |
694 | ||
695 | .nibble_read_data = parport_ieee1284_read_nibble, | |
696 | .byte_read_data = parport_ieee1284_read_byte, | |
697 | }; | |
698 | ||
699 | /* | |
700 | * Allocate and initialize parallel port control struct, initialize | |
701 | * the parallel port hardware device, and register with the parport subsystem. | |
702 | */ | |
703 | static int mos7715_parport_init(struct usb_serial *serial) | |
704 | { | |
705 | struct mos7715_parport *mos_parport; | |
706 | ||
707 | /* allocate and initialize parallel port control struct */ | |
708 | mos_parport = kzalloc(sizeof(struct mos7715_parport), GFP_KERNEL); | |
10c642d0 | 709 | if (!mos_parport) |
b69578df | 710 | return -ENOMEM; |
10c642d0 | 711 | |
b69578df MD |
712 | mos_parport->msg_pending = false; |
713 | kref_init(&mos_parport->ref_count); | |
714 | spin_lock_init(&mos_parport->listlock); | |
715 | INIT_LIST_HEAD(&mos_parport->active_urbs); | |
716 | INIT_LIST_HEAD(&mos_parport->deferred_urbs); | |
717 | usb_set_serial_data(serial, mos_parport); /* hijack private pointer */ | |
718 | mos_parport->serial = serial; | |
719 | tasklet_init(&mos_parport->urb_tasklet, send_deferred_urbs, | |
720 | (unsigned long) mos_parport); | |
721 | init_completion(&mos_parport->syncmsg_compl); | |
722 | ||
723 | /* cycle parallel port reset bit */ | |
ee5729ec SM |
724 | write_mos_reg(mos_parport->serial, dummy, MOS7720_PP_REG, (__u8)0x80); |
725 | write_mos_reg(mos_parport->serial, dummy, MOS7720_PP_REG, (__u8)0x00); | |
b69578df MD |
726 | |
727 | /* initialize device registers */ | |
728 | mos_parport->shadowDCR = DCR_INIT_VAL; | |
ee5729ec SM |
729 | write_mos_reg(mos_parport->serial, dummy, MOS7720_DCR, |
730 | mos_parport->shadowDCR); | |
b69578df | 731 | mos_parport->shadowECR = ECR_INIT_VAL; |
ee5729ec SM |
732 | write_mos_reg(mos_parport->serial, dummy, MOS7720_ECR, |
733 | mos_parport->shadowECR); | |
b69578df MD |
734 | |
735 | /* register with parport core */ | |
736 | mos_parport->pp = parport_register_port(0, PARPORT_IRQ_NONE, | |
737 | PARPORT_DMA_NONE, | |
738 | &parport_mos7715_ops); | |
739 | if (mos_parport->pp == NULL) { | |
740 | dev_err(&serial->interface->dev, | |
741 | "Could not register parport\n"); | |
742 | kref_put(&mos_parport->ref_count, destroy_mos_parport); | |
743 | return -EIO; | |
744 | } | |
745 | mos_parport->pp->private_data = mos_parport; | |
746 | mos_parport->pp->modes = PARPORT_MODE_COMPAT | PARPORT_MODE_PCSPP; | |
747 | mos_parport->pp->dev = &serial->interface->dev; | |
748 | parport_announce_port(mos_parport->pp); | |
749 | ||
750 | return 0; | |
751 | } | |
752 | #endif /* CONFIG_USB_SERIAL_MOS7715_PARPORT */ | |
0f64478c GKH |
753 | |
754 | /* | |
755 | * mos7720_interrupt_callback | |
756 | * this is the callback function for when we have received data on the | |
757 | * interrupt endpoint. | |
758 | */ | |
759 | static void mos7720_interrupt_callback(struct urb *urb) | |
760 | { | |
761 | int result; | |
762 | int length; | |
81105984 | 763 | int status = urb->status; |
9eecf808 | 764 | struct device *dev = &urb->dev->dev; |
325b70c2 | 765 | __u8 *data; |
0f64478c GKH |
766 | __u8 sp1; |
767 | __u8 sp2; | |
0f64478c | 768 | |
81105984 | 769 | switch (status) { |
0f64478c GKH |
770 | case 0: |
771 | /* success */ | |
772 | break; | |
773 | case -ECONNRESET: | |
774 | case -ENOENT: | |
775 | case -ESHUTDOWN: | |
776 | /* this urb is terminated, clean up */ | |
9eecf808 | 777 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
0f64478c GKH |
778 | return; |
779 | default: | |
9eecf808 | 780 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
0f64478c GKH |
781 | goto exit; |
782 | } | |
783 | ||
784 | length = urb->actual_length; | |
785 | data = urb->transfer_buffer; | |
786 | ||
787 | /* Moschip get 4 bytes | |
788 | * Byte 1 IIR Port 1 (port.number is 0) | |
789 | * Byte 2 IIR Port 2 (port.number is 1) | |
790 | * Byte 3 -------------- | |
791 | * Byte 4 FIFO status for both */ | |
325b70c2 ON |
792 | |
793 | /* the above description is inverted | |
794 | * oneukum 2007-03-14 */ | |
795 | ||
796 | if (unlikely(length != 4)) { | |
9eecf808 | 797 | dev_dbg(dev, "Wrong data !!!\n"); |
0f64478c GKH |
798 | return; |
799 | } | |
800 | ||
325b70c2 ON |
801 | sp1 = data[3]; |
802 | sp2 = data[2]; | |
0f64478c | 803 | |
325b70c2 | 804 | if ((sp1 | sp2) & 0x01) { |
0f64478c | 805 | /* No Interrupt Pending in both the ports */ |
9eecf808 | 806 | dev_dbg(dev, "No Interrupt !!!\n"); |
0f64478c GKH |
807 | } else { |
808 | switch (sp1 & 0x0f) { | |
809 | case SERIAL_IIR_RLS: | |
9eecf808 | 810 | dev_dbg(dev, "Serial Port 1: Receiver status error or address bit detected in 9-bit mode\n"); |
0f64478c GKH |
811 | break; |
812 | case SERIAL_IIR_CTI: | |
9eecf808 | 813 | dev_dbg(dev, "Serial Port 1: Receiver time out\n"); |
0f64478c GKH |
814 | break; |
815 | case SERIAL_IIR_MS: | |
9eecf808 | 816 | /* dev_dbg(dev, "Serial Port 1: Modem status change\n"); */ |
0f64478c GKH |
817 | break; |
818 | } | |
819 | ||
820 | switch (sp2 & 0x0f) { | |
821 | case SERIAL_IIR_RLS: | |
9eecf808 | 822 | dev_dbg(dev, "Serial Port 2: Receiver status error or address bit detected in 9-bit mode\n"); |
0f64478c GKH |
823 | break; |
824 | case SERIAL_IIR_CTI: | |
9eecf808 | 825 | dev_dbg(dev, "Serial Port 2: Receiver time out\n"); |
0f64478c GKH |
826 | break; |
827 | case SERIAL_IIR_MS: | |
9eecf808 | 828 | /* dev_dbg(dev, "Serial Port 2: Modem status change\n"); */ |
0f64478c GKH |
829 | break; |
830 | } | |
831 | } | |
832 | ||
833 | exit: | |
834 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
835 | if (result) | |
9eecf808 | 836 | dev_err(dev, "%s - Error %d submitting control urb\n", __func__, result); |
0f64478c GKH |
837 | } |
838 | ||
fb088e33 MD |
839 | /* |
840 | * mos7715_interrupt_callback | |
841 | * this is the 7715's callback function for when we have received data on | |
842 | * the interrupt endpoint. | |
843 | */ | |
844 | static void mos7715_interrupt_callback(struct urb *urb) | |
845 | { | |
846 | int result; | |
847 | int length; | |
848 | int status = urb->status; | |
9eecf808 | 849 | struct device *dev = &urb->dev->dev; |
fb088e33 MD |
850 | __u8 *data; |
851 | __u8 iir; | |
852 | ||
853 | switch (status) { | |
854 | case 0: | |
855 | /* success */ | |
856 | break; | |
857 | case -ECONNRESET: | |
858 | case -ENOENT: | |
859 | case -ESHUTDOWN: | |
b69578df | 860 | case -ENODEV: |
fb088e33 | 861 | /* this urb is terminated, clean up */ |
9eecf808 | 862 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
fb088e33 MD |
863 | return; |
864 | default: | |
9eecf808 | 865 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
fb088e33 MD |
866 | goto exit; |
867 | } | |
868 | ||
869 | length = urb->actual_length; | |
870 | data = urb->transfer_buffer; | |
871 | ||
872 | /* Structure of data from 7715 device: | |
873 | * Byte 1: IIR serial Port | |
874 | * Byte 2: unused | |
875 | * Byte 2: DSR parallel port | |
876 | * Byte 4: FIFO status for both */ | |
877 | ||
878 | if (unlikely(length != 4)) { | |
9eecf808 | 879 | dev_dbg(dev, "Wrong data !!!\n"); |
fb088e33 MD |
880 | return; |
881 | } | |
882 | ||
883 | iir = data[0]; | |
884 | if (!(iir & 0x01)) { /* serial port interrupt pending */ | |
885 | switch (iir & 0x0f) { | |
886 | case SERIAL_IIR_RLS: | |
d9a38a87 | 887 | dev_dbg(dev, "Serial Port: Receiver status error or address bit detected in 9-bit mode\n"); |
fb088e33 MD |
888 | break; |
889 | case SERIAL_IIR_CTI: | |
9eecf808 | 890 | dev_dbg(dev, "Serial Port: Receiver time out\n"); |
fb088e33 MD |
891 | break; |
892 | case SERIAL_IIR_MS: | |
9eecf808 | 893 | /* dev_dbg(dev, "Serial Port: Modem status change\n"); */ |
fb088e33 MD |
894 | break; |
895 | } | |
896 | } | |
897 | ||
b69578df MD |
898 | #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT |
899 | { /* update local copy of DSR reg */ | |
900 | struct usb_serial_port *port = urb->context; | |
901 | struct mos7715_parport *mos_parport = port->serial->private; | |
902 | if (unlikely(mos_parport == NULL)) | |
903 | return; | |
904 | atomic_set(&mos_parport->shadowDSR, data[2]); | |
905 | } | |
906 | #endif | |
907 | ||
fb088e33 MD |
908 | exit: |
909 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
910 | if (result) | |
9eecf808 | 911 | dev_err(dev, "%s - Error %d submitting control urb\n", __func__, result); |
fb088e33 MD |
912 | } |
913 | ||
0f64478c GKH |
914 | /* |
915 | * mos7720_bulk_in_callback | |
916 | * this is the callback function for when we have received data on the | |
917 | * bulk in endpoint. | |
918 | */ | |
919 | static void mos7720_bulk_in_callback(struct urb *urb) | |
920 | { | |
81105984 | 921 | int retval; |
0f64478c GKH |
922 | unsigned char *data ; |
923 | struct usb_serial_port *port; | |
81105984 | 924 | int status = urb->status; |
0f64478c | 925 | |
81105984 | 926 | if (status) { |
9eecf808 | 927 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
0f64478c GKH |
928 | return; |
929 | } | |
930 | ||
b69578df | 931 | port = urb->context; |
0f64478c | 932 | |
9eecf808 | 933 | dev_dbg(&port->dev, "Entering...%s\n", __func__); |
0f64478c GKH |
934 | |
935 | data = urb->transfer_buffer; | |
936 | ||
2e124b4a | 937 | if (urb->actual_length) { |
05c7cd39 | 938 | tty_insert_flip_string(&port->port, data, urb->actual_length); |
2e124b4a | 939 | tty_flip_buffer_push(&port->port); |
0f64478c GKH |
940 | } |
941 | ||
0f64478c | 942 | if (port->read_urb->status != -EINPROGRESS) { |
81105984 GKH |
943 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
944 | if (retval) | |
9eecf808 | 945 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
0f64478c GKH |
946 | } |
947 | } | |
948 | ||
949 | /* | |
950 | * mos7720_bulk_out_data_callback | |
951 | * this is the callback function for when we have finished sending serial | |
952 | * data on the bulk out endpoint. | |
953 | */ | |
954 | static void mos7720_bulk_out_data_callback(struct urb *urb) | |
955 | { | |
956 | struct moschip_port *mos7720_port; | |
81105984 | 957 | int status = urb->status; |
0f64478c | 958 | |
81105984 | 959 | if (status) { |
9eecf808 | 960 | dev_dbg(&urb->dev->dev, "nonzero write bulk status received:%d\n", status); |
0f64478c GKH |
961 | return; |
962 | } | |
963 | ||
964 | mos7720_port = urb->context; | |
965 | if (!mos7720_port) { | |
9eecf808 | 966 | dev_dbg(&urb->dev->dev, "NULL mos7720_port pointer\n"); |
0f64478c GKH |
967 | return ; |
968 | } | |
969 | ||
6aad04f2 JS |
970 | if (mos7720_port->open) |
971 | tty_port_tty_wakeup(&mos7720_port->port->port); | |
0f64478c GKH |
972 | } |
973 | ||
07814246 JH |
974 | static int mos77xx_calc_num_ports(struct usb_serial *serial, |
975 | struct usb_serial_endpoints *epds) | |
fb088e33 MD |
976 | { |
977 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); | |
d760557d JH |
978 | |
979 | if (product == MOSCHIP_DEVICE_ID_7715) { | |
980 | /* | |
981 | * The 7715 uses the first bulk in/out endpoint pair for the | |
982 | * parallel port, and the second for the serial port. We swap | |
983 | * the endpoint descriptors here so that the the first and | |
984 | * only registered port structure uses the serial-port | |
985 | * endpoints. | |
986 | */ | |
987 | swap(epds->bulk_in[0], epds->bulk_in[1]); | |
988 | swap(epds->bulk_out[0], epds->bulk_out[1]); | |
989 | ||
fb088e33 | 990 | return 1; |
d760557d | 991 | } |
fb088e33 MD |
992 | |
993 | return 2; | |
994 | } | |
995 | ||
a509a7e4 | 996 | static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) |
0f64478c GKH |
997 | { |
998 | struct usb_serial *serial; | |
0f64478c | 999 | struct urb *urb; |
0f64478c GKH |
1000 | struct moschip_port *mos7720_port; |
1001 | int response; | |
1002 | int port_number; | |
63b91767 | 1003 | __u8 data; |
fe4b65ec | 1004 | int allocated_urbs = 0; |
0f64478c GKH |
1005 | int j; |
1006 | ||
1007 | serial = port->serial; | |
1008 | ||
1009 | mos7720_port = usb_get_serial_port_data(port); | |
1010 | if (mos7720_port == NULL) | |
1011 | return -ENODEV; | |
1012 | ||
0f64478c GKH |
1013 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
1014 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
1015 | ||
1016 | /* Initialising the write urb pool */ | |
1017 | for (j = 0; j < NUM_URBS; ++j) { | |
4da1a17d | 1018 | urb = usb_alloc_urb(0, GFP_KERNEL); |
0f64478c | 1019 | mos7720_port->write_urb_pool[j] = urb; |
10c642d0 | 1020 | if (!urb) |
0f64478c | 1021 | continue; |
0f64478c GKH |
1022 | |
1023 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
1024 | GFP_KERNEL); | |
1025 | if (!urb->transfer_buffer) { | |
fe4b65ec ON |
1026 | usb_free_urb(mos7720_port->write_urb_pool[j]); |
1027 | mos7720_port->write_urb_pool[j] = NULL; | |
0f64478c GKH |
1028 | continue; |
1029 | } | |
fe4b65ec | 1030 | allocated_urbs++; |
0f64478c GKH |
1031 | } |
1032 | ||
fe4b65ec ON |
1033 | if (!allocated_urbs) |
1034 | return -ENOMEM; | |
1035 | ||
0f64478c GKH |
1036 | /* Initialize MCS7720 -- Write Init values to corresponding Registers |
1037 | * | |
1038 | * Register Index | |
ee5729ec SM |
1039 | * 0 : MOS7720_THR/MOS7720_RHR |
1040 | * 1 : MOS7720_IER | |
1041 | * 2 : MOS7720_FCR | |
1042 | * 3 : MOS7720_LCR | |
1043 | * 4 : MOS7720_MCR | |
1044 | * 5 : MOS7720_LSR | |
1045 | * 6 : MOS7720_MSR | |
1046 | * 7 : MOS7720_SPR | |
0f64478c GKH |
1047 | * |
1048 | * 0x08 : SP1/2 Control Reg | |
1049 | */ | |
1143832e | 1050 | port_number = port->port_number; |
ee5729ec | 1051 | read_mos_reg(serial, port_number, MOS7720_LSR, &data); |
63b91767 | 1052 | |
9eecf808 | 1053 | dev_dbg(&port->dev, "SS::%p LSR:%x\n", mos7720_port, data); |
0f64478c | 1054 | |
ee5729ec SM |
1055 | write_mos_reg(serial, dummy, MOS7720_SP1_REG, 0x02); |
1056 | write_mos_reg(serial, dummy, MOS7720_SP2_REG, 0x02); | |
0f64478c | 1057 | |
ee5729ec SM |
1058 | write_mos_reg(serial, port_number, MOS7720_IER, 0x00); |
1059 | write_mos_reg(serial, port_number, MOS7720_FCR, 0x00); | |
0f64478c | 1060 | |
ee5729ec | 1061 | write_mos_reg(serial, port_number, MOS7720_FCR, 0xcf); |
63b91767 | 1062 | mos7720_port->shadowLCR = 0x03; |
ee5729ec SM |
1063 | write_mos_reg(serial, port_number, MOS7720_LCR, |
1064 | mos7720_port->shadowLCR); | |
63b91767 | 1065 | mos7720_port->shadowMCR = 0x0b; |
ee5729ec SM |
1066 | write_mos_reg(serial, port_number, MOS7720_MCR, |
1067 | mos7720_port->shadowMCR); | |
0f64478c | 1068 | |
ee5729ec SM |
1069 | write_mos_reg(serial, port_number, MOS7720_SP_CONTROL_REG, 0x00); |
1070 | read_mos_reg(serial, dummy, MOS7720_SP_CONTROL_REG, &data); | |
1143832e | 1071 | data = data | (port->port_number + 1); |
ee5729ec | 1072 | write_mos_reg(serial, dummy, MOS7720_SP_CONTROL_REG, data); |
63b91767 | 1073 | mos7720_port->shadowLCR = 0x83; |
ee5729ec SM |
1074 | write_mos_reg(serial, port_number, MOS7720_LCR, |
1075 | mos7720_port->shadowLCR); | |
1076 | write_mos_reg(serial, port_number, MOS7720_THR, 0x0c); | |
1077 | write_mos_reg(serial, port_number, MOS7720_IER, 0x00); | |
63b91767 | 1078 | mos7720_port->shadowLCR = 0x03; |
ee5729ec SM |
1079 | write_mos_reg(serial, port_number, MOS7720_LCR, |
1080 | mos7720_port->shadowLCR); | |
1081 | write_mos_reg(serial, port_number, MOS7720_IER, 0x0c); | |
0f64478c | 1082 | |
0f64478c GKH |
1083 | response = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1084 | if (response) | |
4da1a17d AC |
1085 | dev_err(&port->dev, "%s - Error %d submitting read urb\n", |
1086 | __func__, response); | |
0f64478c | 1087 | |
0f64478c GKH |
1088 | /* initialize our port settings */ |
1089 | mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ | |
1090 | ||
1091 | /* send a open port command */ | |
1092 | mos7720_port->open = 1; | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * mos7720_chars_in_buffer | |
1099 | * this function is called by the tty driver when it wants to know how many | |
1100 | * bytes of data we currently have outstanding in the port (data that has | |
1101 | * been written, but hasn't made it out the port yet) | |
1102 | * If successful, we return the number of bytes left to be written in the | |
1103 | * system, | |
1104 | * Otherwise we return a negative error number. | |
1105 | */ | |
95da310e | 1106 | static int mos7720_chars_in_buffer(struct tty_struct *tty) |
0f64478c | 1107 | { |
95da310e | 1108 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1109 | int i; |
1110 | int chars = 0; | |
1111 | struct moschip_port *mos7720_port; | |
1112 | ||
0f64478c | 1113 | mos7720_port = usb_get_serial_port_data(port); |
9eecf808 | 1114 | if (mos7720_port == NULL) |
23198fda | 1115 | return 0; |
0f64478c GKH |
1116 | |
1117 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
1118 | if (mos7720_port->write_urb_pool[i] && |
1119 | mos7720_port->write_urb_pool[i]->status == -EINPROGRESS) | |
0f64478c GKH |
1120 | chars += URB_TRANSFER_BUFFER_SIZE; |
1121 | } | |
9eecf808 | 1122 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
0f64478c GKH |
1123 | return chars; |
1124 | } | |
1125 | ||
335f8514 | 1126 | static void mos7720_close(struct usb_serial_port *port) |
0f64478c GKH |
1127 | { |
1128 | struct usb_serial *serial; | |
1129 | struct moschip_port *mos7720_port; | |
0f64478c GKH |
1130 | int j; |
1131 | ||
0f64478c GKH |
1132 | serial = port->serial; |
1133 | ||
1134 | mos7720_port = usb_get_serial_port_data(port); | |
1135 | if (mos7720_port == NULL) | |
1136 | return; | |
1137 | ||
1138 | for (j = 0; j < NUM_URBS; ++j) | |
1139 | usb_kill_urb(mos7720_port->write_urb_pool[j]); | |
1140 | ||
1141 | /* Freeing Write URBs */ | |
1142 | for (j = 0; j < NUM_URBS; ++j) { | |
1143 | if (mos7720_port->write_urb_pool[j]) { | |
1144 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); | |
1145 | usb_free_urb(mos7720_port->write_urb_pool[j]); | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | /* While closing port, shutdown all bulk read, write * | |
a1cd7e99 | 1150 | * and interrupt read if they exists, otherwise nop */ |
a1cd7e99 | 1151 | usb_kill_urb(port->write_urb); |
a1cd7e99 ON |
1152 | usb_kill_urb(port->read_urb); |
1153 | ||
ee5729ec SM |
1154 | write_mos_reg(serial, port->port_number, MOS7720_MCR, 0x00); |
1155 | write_mos_reg(serial, port->port_number, MOS7720_IER, 0x00); | |
cf41aa9e | 1156 | |
0f64478c | 1157 | mos7720_port->open = 0; |
0f64478c GKH |
1158 | } |
1159 | ||
95da310e | 1160 | static void mos7720_break(struct tty_struct *tty, int break_state) |
0f64478c | 1161 | { |
95da310e | 1162 | struct usb_serial_port *port = tty->driver_data; |
4da1a17d | 1163 | unsigned char data; |
0f64478c GKH |
1164 | struct usb_serial *serial; |
1165 | struct moschip_port *mos7720_port; | |
1166 | ||
0f64478c GKH |
1167 | serial = port->serial; |
1168 | ||
1169 | mos7720_port = usb_get_serial_port_data(port); | |
1170 | if (mos7720_port == NULL) | |
1171 | return; | |
1172 | ||
1173 | if (break_state == -1) | |
1174 | data = mos7720_port->shadowLCR | UART_LCR_SBC; | |
1175 | else | |
1176 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; | |
1177 | ||
1178 | mos7720_port->shadowLCR = data; | |
ee5729ec SM |
1179 | write_mos_reg(serial, port->port_number, MOS7720_LCR, |
1180 | mos7720_port->shadowLCR); | |
0f64478c GKH |
1181 | } |
1182 | ||
1183 | /* | |
1184 | * mos7720_write_room | |
1185 | * this function is called by the tty driver when it wants to know how many | |
1186 | * bytes of data we can accept for a specific port. | |
1187 | * If successful, we return the amount of room that we have for this port | |
1188 | * Otherwise we return a negative error number. | |
1189 | */ | |
95da310e | 1190 | static int mos7720_write_room(struct tty_struct *tty) |
0f64478c | 1191 | { |
95da310e | 1192 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1193 | struct moschip_port *mos7720_port; |
1194 | int room = 0; | |
1195 | int i; | |
1196 | ||
0f64478c | 1197 | mos7720_port = usb_get_serial_port_data(port); |
9eecf808 | 1198 | if (mos7720_port == NULL) |
0f64478c | 1199 | return -ENODEV; |
0f64478c | 1200 | |
a5b6f60c | 1201 | /* FIXME: Locking */ |
0f64478c | 1202 | for (i = 0; i < NUM_URBS; ++i) { |
4da1a17d AC |
1203 | if (mos7720_port->write_urb_pool[i] && |
1204 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) | |
0f64478c GKH |
1205 | room += URB_TRANSFER_BUFFER_SIZE; |
1206 | } | |
1207 | ||
9eecf808 | 1208 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
0f64478c GKH |
1209 | return room; |
1210 | } | |
1211 | ||
95da310e AC |
1212 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
1213 | const unsigned char *data, int count) | |
0f64478c GKH |
1214 | { |
1215 | int status; | |
1216 | int i; | |
1217 | int bytes_sent = 0; | |
1218 | int transfer_size; | |
1219 | ||
1220 | struct moschip_port *mos7720_port; | |
1221 | struct usb_serial *serial; | |
1222 | struct urb *urb; | |
1223 | const unsigned char *current_position = data; | |
1224 | ||
0f64478c GKH |
1225 | serial = port->serial; |
1226 | ||
1227 | mos7720_port = usb_get_serial_port_data(port); | |
9eecf808 | 1228 | if (mos7720_port == NULL) |
0f64478c | 1229 | return -ENODEV; |
0f64478c GKH |
1230 | |
1231 | /* try to find a free urb in the list */ | |
1232 | urb = NULL; | |
1233 | ||
1234 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
1235 | if (mos7720_port->write_urb_pool[i] && |
1236 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { | |
0f64478c | 1237 | urb = mos7720_port->write_urb_pool[i]; |
9eecf808 | 1238 | dev_dbg(&port->dev, "URB:%d\n", i); |
0f64478c GKH |
1239 | break; |
1240 | } | |
1241 | } | |
1242 | ||
1243 | if (urb == NULL) { | |
9eecf808 | 1244 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
0f64478c GKH |
1245 | goto exit; |
1246 | } | |
1247 | ||
1248 | if (urb->transfer_buffer == NULL) { | |
1249 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
5a5a1d61 | 1250 | GFP_ATOMIC); |
10c642d0 | 1251 | if (!urb->transfer_buffer) |
0f64478c | 1252 | goto exit; |
0f64478c | 1253 | } |
4da1a17d | 1254 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
0f64478c GKH |
1255 | |
1256 | memcpy(urb->transfer_buffer, current_position, transfer_size); | |
59d33f2f | 1257 | usb_serial_debug_data(&port->dev, __func__, transfer_size, |
0f64478c GKH |
1258 | urb->transfer_buffer); |
1259 | ||
1260 | /* fill urb with data and submit */ | |
1261 | usb_fill_bulk_urb(urb, serial->dev, | |
1262 | usb_sndbulkpipe(serial->dev, | |
4da1a17d | 1263 | port->bulk_out_endpointAddress), |
0f64478c GKH |
1264 | urb->transfer_buffer, transfer_size, |
1265 | mos7720_bulk_out_data_callback, mos7720_port); | |
1266 | ||
1267 | /* send it down the pipe */ | |
4da1a17d | 1268 | status = usb_submit_urb(urb, GFP_ATOMIC); |
0f64478c | 1269 | if (status) { |
22a416c4 | 1270 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1271 | "with status = %d\n", __func__, status); |
0f64478c GKH |
1272 | bytes_sent = status; |
1273 | goto exit; | |
1274 | } | |
1275 | bytes_sent = transfer_size; | |
1276 | ||
1277 | exit: | |
1278 | return bytes_sent; | |
1279 | } | |
1280 | ||
95da310e | 1281 | static void mos7720_throttle(struct tty_struct *tty) |
0f64478c | 1282 | { |
95da310e | 1283 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 1284 | struct moschip_port *mos7720_port; |
0f64478c GKH |
1285 | int status; |
1286 | ||
0f64478c GKH |
1287 | mos7720_port = usb_get_serial_port_data(port); |
1288 | ||
1289 | if (mos7720_port == NULL) | |
1290 | return; | |
1291 | ||
1292 | if (!mos7720_port->open) { | |
9eecf808 | 1293 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
0f64478c GKH |
1294 | return; |
1295 | } | |
1296 | ||
0f64478c GKH |
1297 | /* if we are implementing XON/XOFF, send the stop character */ |
1298 | if (I_IXOFF(tty)) { | |
1299 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e | 1300 | status = mos7720_write(tty, port, &stop_char, 1); |
0f64478c GKH |
1301 | if (status <= 0) |
1302 | return; | |
1303 | } | |
1304 | ||
1305 | /* if we are implementing RTS/CTS, toggle that line */ | |
9db276f8 | 1306 | if (C_CRTSCTS(tty)) { |
0f64478c | 1307 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; |
ee5729ec | 1308 | write_mos_reg(port->serial, port->port_number, MOS7720_MCR, |
1143832e | 1309 | mos7720_port->shadowMCR); |
0f64478c GKH |
1310 | } |
1311 | } | |
1312 | ||
95da310e | 1313 | static void mos7720_unthrottle(struct tty_struct *tty) |
0f64478c | 1314 | { |
95da310e | 1315 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 1316 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
95da310e | 1317 | int status; |
0f64478c GKH |
1318 | |
1319 | if (mos7720_port == NULL) | |
1320 | return; | |
1321 | ||
1322 | if (!mos7720_port->open) { | |
9eecf808 | 1323 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
0f64478c GKH |
1324 | return; |
1325 | } | |
1326 | ||
0f64478c GKH |
1327 | /* if we are implementing XON/XOFF, send the start character */ |
1328 | if (I_IXOFF(tty)) { | |
1329 | unsigned char start_char = START_CHAR(tty); | |
95da310e | 1330 | status = mos7720_write(tty, port, &start_char, 1); |
0f64478c GKH |
1331 | if (status <= 0) |
1332 | return; | |
1333 | } | |
1334 | ||
1335 | /* if we are implementing RTS/CTS, toggle that line */ | |
9db276f8 | 1336 | if (C_CRTSCTS(tty)) { |
0f64478c | 1337 | mos7720_port->shadowMCR |= UART_MCR_RTS; |
ee5729ec | 1338 | write_mos_reg(port->serial, port->port_number, MOS7720_MCR, |
1143832e | 1339 | mos7720_port->shadowMCR); |
0f64478c GKH |
1340 | } |
1341 | } | |
1342 | ||
b69578df | 1343 | /* FIXME: this function does not work */ |
0f64478c GKH |
1344 | static int set_higher_rates(struct moschip_port *mos7720_port, |
1345 | unsigned int baud) | |
1346 | { | |
0f64478c GKH |
1347 | struct usb_serial_port *port; |
1348 | struct usb_serial *serial; | |
1349 | int port_number; | |
63b91767 | 1350 | enum mos_regs sp_reg; |
0f64478c GKH |
1351 | if (mos7720_port == NULL) |
1352 | return -EINVAL; | |
1353 | ||
1354 | port = mos7720_port->port; | |
1355 | serial = port->serial; | |
1356 | ||
4da1a17d AC |
1357 | /*********************************************** |
1358 | * Init Sequence for higher rates | |
1359 | ***********************************************/ | |
9eecf808 | 1360 | dev_dbg(&port->dev, "Sending Setting Commands ..........\n"); |
1143832e | 1361 | port_number = port->port_number; |
0f64478c | 1362 | |
ee5729ec SM |
1363 | write_mos_reg(serial, port_number, MOS7720_IER, 0x00); |
1364 | write_mos_reg(serial, port_number, MOS7720_FCR, 0x00); | |
1365 | write_mos_reg(serial, port_number, MOS7720_FCR, 0xcf); | |
63b91767 | 1366 | mos7720_port->shadowMCR = 0x0b; |
ee5729ec SM |
1367 | write_mos_reg(serial, port_number, MOS7720_MCR, |
1368 | mos7720_port->shadowMCR); | |
1369 | write_mos_reg(serial, dummy, MOS7720_SP_CONTROL_REG, 0x00); | |
0f64478c | 1370 | |
4da1a17d AC |
1371 | /*********************************************** |
1372 | * Set for higher rates * | |
1373 | ***********************************************/ | |
b69578df | 1374 | /* writing baud rate verbatum into uart clock field clearly not right */ |
63b91767 | 1375 | if (port_number == 0) |
ee5729ec | 1376 | sp_reg = MOS7720_SP1_REG; |
63b91767 | 1377 | else |
ee5729ec | 1378 | sp_reg = MOS7720_SP2_REG; |
63b91767 | 1379 | write_mos_reg(serial, dummy, sp_reg, baud * 0x10); |
ee5729ec | 1380 | write_mos_reg(serial, dummy, MOS7720_SP_CONTROL_REG, 0x03); |
63b91767 | 1381 | mos7720_port->shadowMCR = 0x2b; |
ee5729ec SM |
1382 | write_mos_reg(serial, port_number, MOS7720_MCR, |
1383 | mos7720_port->shadowMCR); | |
0f64478c | 1384 | |
4da1a17d AC |
1385 | /*********************************************** |
1386 | * Set DLL/DLM | |
1387 | ***********************************************/ | |
63b91767 | 1388 | mos7720_port->shadowLCR = mos7720_port->shadowLCR | UART_LCR_DLAB; |
ee5729ec SM |
1389 | write_mos_reg(serial, port_number, MOS7720_LCR, |
1390 | mos7720_port->shadowLCR); | |
1391 | write_mos_reg(serial, port_number, MOS7720_DLL, 0x01); | |
1392 | write_mos_reg(serial, port_number, MOS7720_DLM, 0x00); | |
63b91767 | 1393 | mos7720_port->shadowLCR = mos7720_port->shadowLCR & ~UART_LCR_DLAB; |
ee5729ec SM |
1394 | write_mos_reg(serial, port_number, MOS7720_LCR, |
1395 | mos7720_port->shadowLCR); | |
0f64478c GKH |
1396 | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | /* baud rate information */ | |
4da1a17d | 1401 | struct divisor_table_entry { |
0f64478c GKH |
1402 | __u32 baudrate; |
1403 | __u16 divisor; | |
1404 | }; | |
1405 | ||
1406 | /* Define table of divisors for moschip 7720 hardware * | |
1407 | * These assume a 3.6864MHz crystal, the standard /16, and * | |
1408 | * MCR.7 = 0. */ | |
4f37fa54 | 1409 | static const struct divisor_table_entry divisor_table[] = { |
0f64478c GKH |
1410 | { 50, 2304}, |
1411 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ | |
1412 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1413 | { 150, 768}, | |
1414 | { 300, 384}, | |
1415 | { 600, 192}, | |
1416 | { 1200, 96}, | |
1417 | { 1800, 64}, | |
1418 | { 2400, 48}, | |
1419 | { 4800, 24}, | |
1420 | { 7200, 16}, | |
1421 | { 9600, 12}, | |
1422 | { 19200, 6}, | |
1423 | { 38400, 3}, | |
1424 | { 57600, 2}, | |
1425 | { 115200, 1}, | |
1426 | }; | |
1427 | ||
1428 | /***************************************************************************** | |
1429 | * calc_baud_rate_divisor | |
1430 | * this function calculates the proper baud rate divisor for the specified | |
1431 | * baud rate. | |
1432 | *****************************************************************************/ | |
9eecf808 | 1433 | static int calc_baud_rate_divisor(struct usb_serial_port *port, int baudrate, int *divisor) |
0f64478c GKH |
1434 | { |
1435 | int i; | |
1436 | __u16 custom; | |
1437 | __u16 round1; | |
1438 | __u16 round; | |
1439 | ||
1440 | ||
9eecf808 | 1441 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudrate); |
0f64478c GKH |
1442 | |
1443 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { | |
1444 | if (divisor_table[i].baudrate == baudrate) { | |
1445 | *divisor = divisor_table[i].divisor; | |
1446 | return 0; | |
1447 | } | |
1448 | } | |
1449 | ||
4da1a17d AC |
1450 | /* After trying for all the standard baud rates * |
1451 | * Try calculating the divisor for this baud rate */ | |
0f64478c GKH |
1452 | if (baudrate > 75 && baudrate < 230400) { |
1453 | /* get the divisor */ | |
1454 | custom = (__u16)(230400L / baudrate); | |
1455 | ||
1456 | /* Check for round off */ | |
1457 | round1 = (__u16)(2304000L / baudrate); | |
1458 | round = (__u16)(round1 - (custom * 10)); | |
1459 | if (round > 4) | |
1460 | custom++; | |
1461 | *divisor = custom; | |
1462 | ||
9eecf808 | 1463 | dev_dbg(&port->dev, "Baud %d = %d\n", baudrate, custom); |
0f64478c GKH |
1464 | return 0; |
1465 | } | |
1466 | ||
9eecf808 | 1467 | dev_dbg(&port->dev, "Baud calculation Failed...\n"); |
0f64478c GKH |
1468 | return -EINVAL; |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * send_cmd_write_baud_rate | |
1473 | * this function sends the proper command to change the baud rate of the | |
1474 | * specified port. | |
1475 | */ | |
1476 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, | |
1477 | int baudrate) | |
1478 | { | |
1479 | struct usb_serial_port *port; | |
1480 | struct usb_serial *serial; | |
1481 | int divisor; | |
1482 | int status; | |
0f64478c GKH |
1483 | unsigned char number; |
1484 | ||
1485 | if (mos7720_port == NULL) | |
1486 | return -1; | |
1487 | ||
1488 | port = mos7720_port->port; | |
1489 | serial = port->serial; | |
1490 | ||
1143832e | 1491 | number = port->port_number; |
9eecf808 | 1492 | dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudrate); |
0f64478c | 1493 | |
4da1a17d | 1494 | /* Calculate the Divisor */ |
9eecf808 | 1495 | status = calc_baud_rate_divisor(port, baudrate, &divisor); |
0f64478c | 1496 | if (status) { |
194343d9 | 1497 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
0f64478c GKH |
1498 | return status; |
1499 | } | |
1500 | ||
4da1a17d | 1501 | /* Enable access to divisor latch */ |
63b91767 | 1502 | mos7720_port->shadowLCR = mos7720_port->shadowLCR | UART_LCR_DLAB; |
ee5729ec | 1503 | write_mos_reg(serial, number, MOS7720_LCR, mos7720_port->shadowLCR); |
0f64478c GKH |
1504 | |
1505 | /* Write the divisor */ | |
ee5729ec SM |
1506 | write_mos_reg(serial, number, MOS7720_DLL, (__u8)(divisor & 0xff)); |
1507 | write_mos_reg(serial, number, MOS7720_DLM, | |
1508 | (__u8)((divisor & 0xff00) >> 8)); | |
0f64478c | 1509 | |
4da1a17d | 1510 | /* Disable access to divisor latch */ |
63b91767 | 1511 | mos7720_port->shadowLCR = mos7720_port->shadowLCR & ~UART_LCR_DLAB; |
ee5729ec | 1512 | write_mos_reg(serial, number, MOS7720_LCR, mos7720_port->shadowLCR); |
0f64478c GKH |
1513 | |
1514 | return status; | |
1515 | } | |
1516 | ||
1517 | /* | |
1518 | * change_port_settings | |
1519 | * This routine is called to set the UART on the device to match | |
1520 | * the specified new settings. | |
1521 | */ | |
95da310e AC |
1522 | static void change_port_settings(struct tty_struct *tty, |
1523 | struct moschip_port *mos7720_port, | |
606d099c | 1524 | struct ktermios *old_termios) |
0f64478c GKH |
1525 | { |
1526 | struct usb_serial_port *port; | |
1527 | struct usb_serial *serial; | |
0f64478c GKH |
1528 | int baud; |
1529 | unsigned cflag; | |
0f64478c GKH |
1530 | __u8 lData; |
1531 | __u8 lParity; | |
1532 | __u8 lStop; | |
1533 | int status; | |
1534 | int port_number; | |
0f64478c GKH |
1535 | |
1536 | if (mos7720_port == NULL) | |
1537 | return ; | |
1538 | ||
1539 | port = mos7720_port->port; | |
1540 | serial = port->serial; | |
1143832e | 1541 | port_number = port->port_number; |
0f64478c | 1542 | |
0f64478c | 1543 | if (!mos7720_port->open) { |
9eecf808 | 1544 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
0f64478c GKH |
1545 | return; |
1546 | } | |
1547 | ||
0f64478c GKH |
1548 | lData = UART_LCR_WLEN8; |
1549 | lStop = 0x00; /* 1 stop bit */ | |
1550 | lParity = 0x00; /* No parity */ | |
1551 | ||
adc8d746 | 1552 | cflag = tty->termios.c_cflag; |
0f64478c GKH |
1553 | |
1554 | /* Change the number of bits */ | |
1555 | switch (cflag & CSIZE) { | |
1556 | case CS5: | |
1557 | lData = UART_LCR_WLEN5; | |
0f64478c GKH |
1558 | break; |
1559 | ||
1560 | case CS6: | |
1561 | lData = UART_LCR_WLEN6; | |
0f64478c GKH |
1562 | break; |
1563 | ||
1564 | case CS7: | |
1565 | lData = UART_LCR_WLEN7; | |
0f64478c GKH |
1566 | break; |
1567 | default: | |
1568 | case CS8: | |
1569 | lData = UART_LCR_WLEN8; | |
1570 | break; | |
1571 | } | |
1572 | ||
1573 | /* Change the Parity bit */ | |
1574 | if (cflag & PARENB) { | |
1575 | if (cflag & PARODD) { | |
1576 | lParity = UART_LCR_PARITY; | |
9eecf808 | 1577 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
0f64478c GKH |
1578 | } else { |
1579 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); | |
9eecf808 | 1580 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
0f64478c GKH |
1581 | } |
1582 | ||
1583 | } else { | |
9eecf808 | 1584 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
0f64478c GKH |
1585 | } |
1586 | ||
1587 | if (cflag & CMSPAR) | |
1588 | lParity = lParity | 0x20; | |
1589 | ||
1590 | /* Change the Stop bit */ | |
1591 | if (cflag & CSTOPB) { | |
1592 | lStop = UART_LCR_STOP; | |
9eecf808 | 1593 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
0f64478c GKH |
1594 | } else { |
1595 | lStop = 0x00; | |
9eecf808 | 1596 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
0f64478c GKH |
1597 | } |
1598 | ||
1599 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
1600 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
1601 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
1602 | ||
1603 | /* Update the LCR with the correct value */ | |
4da1a17d | 1604 | mos7720_port->shadowLCR &= |
63b91767 | 1605 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); |
0f64478c GKH |
1606 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
1607 | ||
1608 | ||
1609 | /* Disable Interrupts */ | |
ee5729ec SM |
1610 | write_mos_reg(serial, port_number, MOS7720_IER, 0x00); |
1611 | write_mos_reg(serial, port_number, MOS7720_FCR, 0x00); | |
1612 | write_mos_reg(serial, port_number, MOS7720_FCR, 0xcf); | |
0f64478c GKH |
1613 | |
1614 | /* Send the updated LCR value to the mos7720 */ | |
ee5729ec SM |
1615 | write_mos_reg(serial, port_number, MOS7720_LCR, |
1616 | mos7720_port->shadowLCR); | |
63b91767 | 1617 | mos7720_port->shadowMCR = 0x0b; |
ee5729ec SM |
1618 | write_mos_reg(serial, port_number, MOS7720_MCR, |
1619 | mos7720_port->shadowMCR); | |
0f64478c GKH |
1620 | |
1621 | /* set up the MCR register and send it to the mos7720 */ | |
1622 | mos7720_port->shadowMCR = UART_MCR_OUT2; | |
1623 | if (cflag & CBAUD) | |
1624 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); | |
1625 | ||
1626 | if (cflag & CRTSCTS) { | |
1627 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); | |
4da1a17d AC |
1628 | /* To set hardware flow control to the specified * |
1629 | * serial port, in SP1/2_CONTROL_REG */ | |
a26f009a | 1630 | if (port_number) |
ee5729ec SM |
1631 | write_mos_reg(serial, dummy, MOS7720_SP_CONTROL_REG, |
1632 | 0x01); | |
63b91767 | 1633 | else |
ee5729ec SM |
1634 | write_mos_reg(serial, dummy, MOS7720_SP_CONTROL_REG, |
1635 | 0x02); | |
63b91767 MD |
1636 | |
1637 | } else | |
0f64478c | 1638 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); |
0f64478c | 1639 | |
ee5729ec SM |
1640 | write_mos_reg(serial, port_number, MOS7720_MCR, |
1641 | mos7720_port->shadowMCR); | |
0f64478c GKH |
1642 | |
1643 | /* Determine divisor based on baud rate */ | |
1644 | baud = tty_get_baud_rate(tty); | |
1645 | if (!baud) { | |
1646 | /* pick a default, any default... */ | |
9eecf808 | 1647 | dev_dbg(&port->dev, "Picked default baud...\n"); |
0f64478c GKH |
1648 | baud = 9600; |
1649 | } | |
1650 | ||
1651 | if (baud >= 230400) { | |
1652 | set_higher_rates(mos7720_port, baud); | |
1653 | /* Enable Interrupts */ | |
ee5729ec | 1654 | write_mos_reg(serial, port_number, MOS7720_IER, 0x0c); |
0f64478c GKH |
1655 | return; |
1656 | } | |
1657 | ||
9eecf808 | 1658 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
0f64478c | 1659 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
65d063ab AC |
1660 | /* FIXME: needs to write actual resulting baud back not just |
1661 | blindly do so */ | |
1662 | if (cflag & CBAUD) | |
1663 | tty_encode_baud_rate(tty, baud, baud); | |
0f64478c | 1664 | /* Enable Interrupts */ |
ee5729ec | 1665 | write_mos_reg(serial, port_number, MOS7720_IER, 0x0c); |
0f64478c GKH |
1666 | |
1667 | if (port->read_urb->status != -EINPROGRESS) { | |
1dbd11be | 1668 | status = usb_submit_urb(port->read_urb, GFP_KERNEL); |
0f64478c | 1669 | if (status) |
9eecf808 | 1670 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", status); |
0f64478c | 1671 | } |
0f64478c GKH |
1672 | } |
1673 | ||
1674 | /* | |
1675 | * mos7720_set_termios | |
1676 | * this function is called by the tty driver when it wants to change the | |
1677 | * termios structure. | |
1678 | */ | |
95da310e AC |
1679 | static void mos7720_set_termios(struct tty_struct *tty, |
1680 | struct usb_serial_port *port, struct ktermios *old_termios) | |
0f64478c GKH |
1681 | { |
1682 | int status; | |
0f64478c | 1683 | struct moschip_port *mos7720_port; |
0f64478c | 1684 | |
0f64478c GKH |
1685 | mos7720_port = usb_get_serial_port_data(port); |
1686 | ||
1687 | if (mos7720_port == NULL) | |
1688 | return; | |
1689 | ||
0f64478c | 1690 | if (!mos7720_port->open) { |
9eecf808 | 1691 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
0f64478c GKH |
1692 | return; |
1693 | } | |
1694 | ||
0f64478c | 1695 | /* change the port settings to the new ones specified */ |
95da310e | 1696 | change_port_settings(tty, mos7720_port, old_termios); |
0f64478c | 1697 | |
4da1a17d | 1698 | if (port->read_urb->status != -EINPROGRESS) { |
1dbd11be | 1699 | status = usb_submit_urb(port->read_urb, GFP_KERNEL); |
0f64478c | 1700 | if (status) |
9eecf808 | 1701 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", status); |
0f64478c | 1702 | } |
0f64478c GKH |
1703 | } |
1704 | ||
1705 | /* | |
1706 | * get_lsr_info - get line status register info | |
1707 | * | |
1708 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1709 | * is emptied. On bus types like RS485, the transmitter must | |
1710 | * release the bus after transmitting. This must be done when | |
1711 | * the transmit shift register is empty, not be done when the | |
1712 | * transmit holding register is empty. This functionality | |
1713 | * allows an RS485 driver to be written in user space. | |
1714 | */ | |
4da1a17d AC |
1715 | static int get_lsr_info(struct tty_struct *tty, |
1716 | struct moschip_port *mos7720_port, unsigned int __user *value) | |
0f64478c | 1717 | { |
2f9ea55c | 1718 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 1719 | unsigned int result = 0; |
2f9ea55c | 1720 | unsigned char data = 0; |
1143832e | 1721 | int port_number = port->port_number; |
2f9ea55c | 1722 | int count; |
0f64478c | 1723 | |
95da310e | 1724 | count = mos7720_chars_in_buffer(tty); |
0f64478c | 1725 | if (count == 0) { |
ee5729ec | 1726 | read_mos_reg(port->serial, port_number, MOS7720_LSR, &data); |
2f9ea55c KS |
1727 | if ((data & (UART_LSR_TEMT | UART_LSR_THRE)) |
1728 | == (UART_LSR_TEMT | UART_LSR_THRE)) { | |
9eecf808 | 1729 | dev_dbg(&port->dev, "%s -- Empty\n", __func__); |
2f9ea55c KS |
1730 | result = TIOCSER_TEMT; |
1731 | } | |
0f64478c | 1732 | } |
0f64478c GKH |
1733 | if (copy_to_user(value, &result, sizeof(int))) |
1734 | return -EFAULT; | |
1735 | return 0; | |
1736 | } | |
1737 | ||
60b33c13 | 1738 | static int mos7720_tiocmget(struct tty_struct *tty) |
0f608f89 KS |
1739 | { |
1740 | struct usb_serial_port *port = tty->driver_data; | |
1741 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
1742 | unsigned int result = 0; | |
1743 | unsigned int mcr ; | |
1744 | unsigned int msr ; | |
1745 | ||
0f608f89 KS |
1746 | mcr = mos7720_port->shadowMCR; |
1747 | msr = mos7720_port->shadowMSR; | |
1748 | ||
1749 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ | |
1750 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ | |
1751 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ | |
1752 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR : 0) /* 0x040 */ | |
1753 | | ((msr & UART_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ | |
1754 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ | |
1755 | ||
0f608f89 KS |
1756 | return result; |
1757 | } | |
1758 | ||
20b9d177 | 1759 | static int mos7720_tiocmset(struct tty_struct *tty, |
63b91767 | 1760 | unsigned int set, unsigned int clear) |
0f608f89 KS |
1761 | { |
1762 | struct usb_serial_port *port = tty->driver_data; | |
1763 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
1764 | unsigned int mcr ; | |
0f608f89 KS |
1765 | |
1766 | mcr = mos7720_port->shadowMCR; | |
1767 | ||
1768 | if (set & TIOCM_RTS) | |
1769 | mcr |= UART_MCR_RTS; | |
1770 | if (set & TIOCM_DTR) | |
1771 | mcr |= UART_MCR_DTR; | |
1772 | if (set & TIOCM_LOOP) | |
1773 | mcr |= UART_MCR_LOOP; | |
1774 | ||
1775 | if (clear & TIOCM_RTS) | |
1776 | mcr &= ~UART_MCR_RTS; | |
1777 | if (clear & TIOCM_DTR) | |
1778 | mcr &= ~UART_MCR_DTR; | |
1779 | if (clear & TIOCM_LOOP) | |
1780 | mcr &= ~UART_MCR_LOOP; | |
1781 | ||
1782 | mos7720_port->shadowMCR = mcr; | |
ee5729ec | 1783 | write_mos_reg(port->serial, port->port_number, MOS7720_MCR, |
1143832e | 1784 | mos7720_port->shadowMCR); |
0f608f89 KS |
1785 | |
1786 | return 0; | |
1787 | } | |
1788 | ||
7cf3e600 AV |
1789 | static int get_serial_info(struct tty_struct *tty, |
1790 | struct serial_struct *ss) | |
0f64478c | 1791 | { |
7cf3e600 AV |
1792 | struct usb_serial_port *port = tty->driver_data; |
1793 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
0f64478c | 1794 | |
7cf3e600 AV |
1795 | ss->type = PORT_16550A; |
1796 | ss->line = mos7720_port->port->minor; | |
1797 | ss->port = mos7720_port->port->port_number; | |
1798 | ss->irq = 0; | |
1799 | ss->xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
1800 | ss->baud_base = 9600; | |
1801 | ss->close_delay = 5*HZ; | |
1802 | ss->closing_wait = 30*HZ; | |
0f64478c GKH |
1803 | return 0; |
1804 | } | |
1805 | ||
00a0d0d6 | 1806 | static int mos7720_ioctl(struct tty_struct *tty, |
0f64478c GKH |
1807 | unsigned int cmd, unsigned long arg) |
1808 | { | |
95da310e | 1809 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 1810 | struct moschip_port *mos7720_port; |
0f64478c GKH |
1811 | |
1812 | mos7720_port = usb_get_serial_port_data(port); | |
1813 | if (mos7720_port == NULL) | |
1814 | return -ENODEV; | |
1815 | ||
0f64478c | 1816 | switch (cmd) { |
0f64478c | 1817 | case TIOCSERGETLSR: |
9eecf808 | 1818 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
4da1a17d AC |
1819 | return get_lsr_info(tty, mos7720_port, |
1820 | (unsigned int __user *)arg); | |
0f64478c GKH |
1821 | } |
1822 | ||
1823 | return -ENOIOCTLCMD; | |
1824 | } | |
1825 | ||
1826 | static int mos7720_startup(struct usb_serial *serial) | |
1827 | { | |
0f64478c | 1828 | struct usb_device *dev; |
0f64478c | 1829 | char data; |
91f58ae6 | 1830 | u16 product; |
b69578df | 1831 | int ret_val; |
0f64478c | 1832 | |
91f58ae6 | 1833 | product = le16_to_cpu(serial->dev->descriptor.idProduct); |
0f64478c GKH |
1834 | dev = serial->dev; |
1835 | ||
0f64478c GKH |
1836 | /* setting configuration feature to one */ |
1837 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
849513a7 | 1838 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5000); |
0f64478c | 1839 | |
b69578df | 1840 | if (product == MOSCHIP_DEVICE_ID_7715) { |
d760557d JH |
1841 | struct urb *urb = serial->port[0]->interrupt_in_urb; |
1842 | ||
6a1eaf19 | 1843 | urb->complete = mos7715_interrupt_callback; |
d760557d JH |
1844 | |
1845 | #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT | |
b69578df | 1846 | ret_val = mos7715_parport_init(serial); |
75dd211e | 1847 | if (ret_val < 0) |
b69578df | 1848 | return ret_val; |
b69578df | 1849 | #endif |
d760557d | 1850 | } |
75dd211e JH |
1851 | /* start the interrupt urb */ |
1852 | ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); | |
1853 | if (ret_val) { | |
1854 | dev_err(&dev->dev, "failed to submit interrupt urb: %d\n", | |
1855 | ret_val); | |
1856 | } | |
1857 | ||
4da1a17d | 1858 | /* LSR For Port 1 */ |
ee5729ec | 1859 | read_mos_reg(serial, 0, MOS7720_LSR, &data); |
9eecf808 | 1860 | dev_dbg(&dev->dev, "LSR:%x\n", data); |
0f64478c GKH |
1861 | |
1862 | return 0; | |
1863 | } | |
1864 | ||
f9c99bb8 | 1865 | static void mos7720_release(struct usb_serial *serial) |
0f64478c | 1866 | { |
91a1ff4d JH |
1867 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
1868 | ||
b69578df MD |
1869 | #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT |
1870 | /* close the parallel port */ | |
1871 | ||
1872 | if (le16_to_cpu(serial->dev->descriptor.idProduct) | |
1873 | == MOSCHIP_DEVICE_ID_7715) { | |
1874 | struct urbtracker *urbtrack; | |
1875 | unsigned long flags; | |
1876 | struct mos7715_parport *mos_parport = | |
1877 | usb_get_serial_data(serial); | |
1878 | ||
1879 | /* prevent NULL ptr dereference in port callbacks */ | |
1880 | spin_lock(&release_lock); | |
1881 | mos_parport->pp->private_data = NULL; | |
1882 | spin_unlock(&release_lock); | |
1883 | ||
1884 | /* wait for synchronous usb calls to return */ | |
1885 | if (mos_parport->msg_pending) | |
1886 | wait_for_completion_timeout(&mos_parport->syncmsg_compl, | |
849513a7 | 1887 | msecs_to_jiffies(MOS_WDR_TIMEOUT)); |
b69578df MD |
1888 | |
1889 | parport_remove_port(mos_parport->pp); | |
1890 | usb_set_serial_data(serial, NULL); | |
1891 | mos_parport->serial = NULL; | |
1892 | ||
1893 | /* if tasklet currently scheduled, wait for it to complete */ | |
1894 | tasklet_kill(&mos_parport->urb_tasklet); | |
1895 | ||
1896 | /* unlink any urbs sent by the tasklet */ | |
1897 | spin_lock_irqsave(&mos_parport->listlock, flags); | |
1898 | list_for_each_entry(urbtrack, | |
1899 | &mos_parport->active_urbs, | |
1900 | urblist_entry) | |
1901 | usb_unlink_urb(urbtrack->urb); | |
1902 | spin_unlock_irqrestore(&mos_parport->listlock, flags); | |
dcb21ad4 | 1903 | parport_del_port(mos_parport->pp); |
b69578df MD |
1904 | |
1905 | kref_put(&mos_parport->ref_count, destroy_mos_parport); | |
1906 | } | |
1907 | #endif | |
4230af57 JH |
1908 | } |
1909 | ||
1910 | static int mos7720_port_probe(struct usb_serial_port *port) | |
1911 | { | |
1912 | struct moschip_port *mos7720_port; | |
1913 | ||
1914 | mos7720_port = kzalloc(sizeof(*mos7720_port), GFP_KERNEL); | |
1915 | if (!mos7720_port) | |
1916 | return -ENOMEM; | |
1917 | ||
4230af57 JH |
1918 | mos7720_port->port = port; |
1919 | ||
1920 | usb_set_serial_port_data(port, mos7720_port); | |
1921 | ||
1922 | return 0; | |
1923 | } | |
1924 | ||
1925 | static int mos7720_port_remove(struct usb_serial_port *port) | |
1926 | { | |
1927 | struct moschip_port *mos7720_port; | |
1928 | ||
1929 | mos7720_port = usb_get_serial_port_data(port); | |
1930 | kfree(mos7720_port); | |
1931 | ||
1932 | return 0; | |
0f64478c GKH |
1933 | } |
1934 | ||
1935 | static struct usb_serial_driver moschip7720_2port_driver = { | |
1936 | .driver = { | |
1937 | .owner = THIS_MODULE, | |
1938 | .name = "moschip7720", | |
1939 | }, | |
1940 | .description = "Moschip 2 port adapter", | |
68e24113 | 1941 | .id_table = id_table, |
206ff831 JH |
1942 | .num_bulk_in = 2, |
1943 | .num_bulk_out = 2, | |
6a1eaf19 | 1944 | .num_interrupt_in = 1, |
fb088e33 | 1945 | .calc_num_ports = mos77xx_calc_num_ports, |
0f64478c GKH |
1946 | .open = mos7720_open, |
1947 | .close = mos7720_close, | |
1948 | .throttle = mos7720_throttle, | |
1949 | .unthrottle = mos7720_unthrottle, | |
1950 | .attach = mos7720_startup, | |
f9c99bb8 | 1951 | .release = mos7720_release, |
4230af57 JH |
1952 | .port_probe = mos7720_port_probe, |
1953 | .port_remove = mos7720_port_remove, | |
0f64478c | 1954 | .ioctl = mos7720_ioctl, |
0f608f89 KS |
1955 | .tiocmget = mos7720_tiocmget, |
1956 | .tiocmset = mos7720_tiocmset, | |
7cf3e600 | 1957 | .get_serial = get_serial_info, |
0f64478c GKH |
1958 | .set_termios = mos7720_set_termios, |
1959 | .write = mos7720_write, | |
1960 | .write_room = mos7720_write_room, | |
1961 | .chars_in_buffer = mos7720_chars_in_buffer, | |
1962 | .break_ctl = mos7720_break, | |
1963 | .read_bulk_callback = mos7720_bulk_in_callback, | |
fde1faf8 | 1964 | .read_int_callback = mos7720_interrupt_callback, |
0f64478c GKH |
1965 | }; |
1966 | ||
4d2a7aff AS |
1967 | static struct usb_serial_driver * const serial_drivers[] = { |
1968 | &moschip7720_2port_driver, NULL | |
1969 | }; | |
1970 | ||
68e24113 | 1971 | module_usb_serial_driver(serial_drivers, id_table); |
0f64478c | 1972 | |
4da1a17d AC |
1973 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1974 | MODULE_DESCRIPTION(DRIVER_DESC); | |
627cfa89 | 1975 | MODULE_LICENSE("GPL v2"); |