diff options
-rw-r--r-- | drivers/usb/serial/Kconfig | 15 | ||||
-rw-r--r-- | drivers/usb/serial/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/serial/mos7840.c | 2962 |
3 files changed, 2978 insertions, 0 deletions
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index e4df0ac358fb..5076b9d97057 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig | |||
@@ -422,6 +422,21 @@ config USB_SERIAL_MCT_U232 | |||
422 | To compile this driver as a module, choose M here: the | 422 | To compile this driver as a module, choose M here: the |
423 | module will be called mct_u232. | 423 | module will be called mct_u232. |
424 | 424 | ||
425 | config USB_SERIAL_MOS7840 | ||
426 | tristate "USB Moschip 7840/7820 USB Serial Driver" | ||
427 | depends on USB_SERIAL | ||
428 | ---help--- | ||
429 | Say Y here if you want to use a MCS7840 Quad-Serial or MCS7820 | ||
430 | Dual-Serial port device from MosChip Semiconductor. | ||
431 | |||
432 | The MCS7840 and MCS7820 have been developed to connect a wide range | ||
433 | of standard serial devices to a USB host. The MCS7840 has a USB | ||
434 | device controller connected to four (4) individual UARTs while the | ||
435 | MCS7820 controller connects to two (2) individual UARTs. | ||
436 | |||
437 | To compile this driver as a module, choose M here: the | ||
438 | module will be called mos7840. If unsure, choose N. | ||
439 | |||
425 | config USB_SERIAL_NAVMAN | 440 | config USB_SERIAL_NAVMAN |
426 | tristate "USB Navman GPS device" | 441 | tristate "USB Navman GPS device" |
427 | depends on USB_SERIAL | 442 | depends on USB_SERIAL |
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile index 029e2a1d7bf6..8dce83340e31 100644 --- a/drivers/usb/serial/Makefile +++ b/drivers/usb/serial/Makefile | |||
@@ -34,6 +34,7 @@ obj-$(CONFIG_USB_SERIAL_KEYSPAN_PDA) += keyspan_pda.o | |||
34 | obj-$(CONFIG_USB_SERIAL_KLSI) += kl5kusb105.o | 34 | obj-$(CONFIG_USB_SERIAL_KLSI) += kl5kusb105.o |
35 | obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o | 35 | obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o |
36 | obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o | 36 | obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o |
37 | obj-$(CONFIG_USB_SERIAL_MOS7840) += mos7840.o | ||
37 | obj-$(CONFIG_USB_SERIAL_NAVMAN) += navman.o | 38 | obj-$(CONFIG_USB_SERIAL_NAVMAN) += navman.o |
38 | obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o | 39 | obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o |
39 | obj-$(CONFIG_USB_SERIAL_OPTION) += option.o | 40 | obj-$(CONFIG_USB_SERIAL_OPTION) += option.o |
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c new file mode 100644 index 000000000000..95bf57166c59 --- /dev/null +++ b/drivers/usb/serial/mos7840.c | |||
@@ -0,0 +1,2962 @@ | |||
1 | /* | ||
2 | * This program is free software; you can redistribute it and/or modify | ||
3 | * it under the terms of the GNU General Public License as published by | ||
4 | * the Free Software Foundation; either version 2 of the License, or | ||
5 | * (at your option) any later version. | ||
6 | * | ||
7 | * This program is distributed in the hope that it will be useful, | ||
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
10 | * GNU General Public License for more details. | ||
11 | * | ||
12 | * You should have received a copy of the GNU General Public License | ||
13 | * along with this program; if not, write to the Free Software | ||
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
15 | * | ||
16 | * Clean ups from Moschip version and a few ioctl implementations by: | ||
17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | ||
18 | * | ||
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | ||
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | ||
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | ||
22 | * | ||
23 | */ | ||
24 | |||
25 | #include <linux/kernel.h> | ||
26 | #include <linux/errno.h> | ||
27 | #include <linux/init.h> | ||
28 | #include <linux/slab.h> | ||
29 | #include <linux/tty.h> | ||
30 | #include <linux/tty_driver.h> | ||
31 | #include <linux/tty_flip.h> | ||
32 | #include <linux/module.h> | ||
33 | #include <linux/serial.h> | ||
34 | #include <linux/usb.h> | ||
35 | #include <linux/usb/serial.h> | ||
36 | #include <asm/uaccess.h> | ||
37 | |||
38 | /* | ||
39 | * Version Information | ||
40 | */ | ||
41 | #define DRIVER_VERSION "1.3.1" | ||
42 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" | ||
43 | |||
44 | /* | ||
45 | * 16C50 UART register defines | ||
46 | */ | ||
47 | |||
48 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | ||
49 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | ||
50 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | ||
51 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | ||
52 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | ||
53 | |||
54 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | ||
55 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | ||
56 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | ||
57 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | ||
58 | |||
59 | #define LCR_PAR_NONE 0x00 /* No parity */ | ||
60 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | ||
61 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | ||
62 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | ||
63 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | ||
64 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | ||
65 | |||
66 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | ||
67 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | ||
68 | |||
69 | #define MCR_DTR 0x01 /* Assert DTR */ | ||
70 | #define MCR_RTS 0x02 /* Assert RTS */ | ||
71 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | ||
72 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | ||
73 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | ||
74 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | ||
75 | |||
76 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | ||
77 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | ||
78 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | ||
79 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | ||
80 | |||
81 | /* | ||
82 | * Defines used for sending commands to port | ||
83 | */ | ||
84 | |||
85 | #define WAIT_FOR_EVER (HZ * 0 ) /* timeout urb is wait for ever */ | ||
86 | #define MOS_WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */ | ||
87 | |||
88 | #define MOS_PORT1 0x0200 | ||
89 | #define MOS_PORT2 0x0300 | ||
90 | #define MOS_VENREG 0x0000 | ||
91 | #define MOS_MAX_PORT 0x02 | ||
92 | #define MOS_WRITE 0x0E | ||
93 | #define MOS_READ 0x0D | ||
94 | |||
95 | /* Requests */ | ||
96 | #define MCS_RD_RTYPE 0xC0 | ||
97 | #define MCS_WR_RTYPE 0x40 | ||
98 | #define MCS_RDREQ 0x0D | ||
99 | #define MCS_WRREQ 0x0E | ||
100 | #define MCS_CTRL_TIMEOUT 500 | ||
101 | #define VENDOR_READ_LENGTH (0x01) | ||
102 | |||
103 | #define MAX_NAME_LEN 64 | ||
104 | |||
105 | #define ZLP_REG1 0x3A //Zero_Flag_Reg1 58 | ||
106 | #define ZLP_REG5 0x3E //Zero_Flag_Reg5 62 | ||
107 | |||
108 | /* For higher baud Rates use TIOCEXBAUD */ | ||
109 | #define TIOCEXBAUD 0x5462 | ||
110 | |||
111 | /* vendor id and device id defines */ | ||
112 | |||
113 | #define USB_VENDOR_ID_MOSCHIP 0x9710 | ||
114 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | ||
115 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | ||
116 | |||
117 | /* Interrupt Rotinue Defines */ | ||
118 | |||
119 | #define SERIAL_IIR_RLS 0x06 | ||
120 | #define SERIAL_IIR_MS 0x00 | ||
121 | |||
122 | /* | ||
123 | * Emulation of the bit mask on the LINE STATUS REGISTER. | ||
124 | */ | ||
125 | #define SERIAL_LSR_DR 0x0001 | ||
126 | #define SERIAL_LSR_OE 0x0002 | ||
127 | #define SERIAL_LSR_PE 0x0004 | ||
128 | #define SERIAL_LSR_FE 0x0008 | ||
129 | #define SERIAL_LSR_BI 0x0010 | ||
130 | |||
131 | #define MOS_MSR_DELTA_CTS 0x10 | ||
132 | #define MOS_MSR_DELTA_DSR 0x20 | ||
133 | #define MOS_MSR_DELTA_RI 0x40 | ||
134 | #define MOS_MSR_DELTA_CD 0x80 | ||
135 | |||
136 | // Serial Port register Address | ||
137 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) | ||
138 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | ||
139 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | ||
140 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | ||
141 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | ||
142 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | ||
143 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | ||
144 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | ||
145 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | ||
146 | |||
147 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | ||
148 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | ||
149 | |||
150 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | ||
151 | |||
152 | /* | ||
153 | * URB POOL related defines | ||
154 | */ | ||
155 | #define NUM_URBS 16 /* URB Count */ | ||
156 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | ||
157 | |||
158 | |||
159 | static struct usb_device_id moschip_port_id_table[] = { | ||
160 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, | ||
161 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | ||
162 | {} /* terminating entry */ | ||
163 | }; | ||
164 | |||
165 | static __devinitdata struct usb_device_id moschip_id_table_combined[] = { | ||
166 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, | ||
167 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | ||
168 | {} /* terminating entry */ | ||
169 | }; | ||
170 | |||
171 | MODULE_DEVICE_TABLE(usb, moschip_id_table_combined); | ||
172 | |||
173 | /* This structure holds all of the local port information */ | ||
174 | |||
175 | struct moschip_port { | ||
176 | int port_num; /*Actual port number in the device(1,2,etc) */ | ||
177 | struct urb *write_urb; /* write URB for this port */ | ||
178 | struct urb *read_urb; /* read URB for this port */ | ||
179 | __u8 shadowLCR; /* last LCR value received */ | ||
180 | __u8 shadowMCR; /* last MCR value received */ | ||
181 | char open; | ||
182 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | ||
183 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | ||
184 | int delta_msr_cond; | ||
185 | struct async_icount icount; | ||
186 | struct usb_serial_port *port; /* loop back to the owner of this object */ | ||
187 | |||
188 | /*Offsets */ | ||
189 | __u8 SpRegOffset; | ||
190 | __u8 ControlRegOffset; | ||
191 | __u8 DcrRegOffset; | ||
192 | //for processing control URBS in interrupt context | ||
193 | struct urb *control_urb; | ||
194 | char *ctrl_buf; | ||
195 | int MsrLsr; | ||
196 | |||
197 | struct urb *write_urb_pool[NUM_URBS]; | ||
198 | }; | ||
199 | |||
200 | |||
201 | static int debug; | ||
202 | static int mos7840_num_ports; //this says the number of ports in the device | ||
203 | static int mos7840_num_open_ports; | ||
204 | |||
205 | |||
206 | /* | ||
207 | * mos7840_set_reg_sync | ||
208 | * To set the Control register by calling usb_fill_control_urb function | ||
209 | * by passing usb_sndctrlpipe function as parameter. | ||
210 | */ | ||
211 | |||
212 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | ||
213 | __u16 val) | ||
214 | { | ||
215 | struct usb_device *dev = port->serial->dev; | ||
216 | val = val & 0x00ff; | ||
217 | dbg("mos7840_set_reg_sync offset is %x, value %x\n", reg, val); | ||
218 | |||
219 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | ||
220 | MCS_WR_RTYPE, val, reg, NULL, 0, | ||
221 | MOS_WDR_TIMEOUT); | ||
222 | } | ||
223 | |||
224 | /* | ||
225 | * mos7840_get_reg_sync | ||
226 | * To set the Uart register by calling usb_fill_control_urb function by | ||
227 | * passing usb_rcvctrlpipe function as parameter. | ||
228 | */ | ||
229 | |||
230 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | ||
231 | __u16 * val) | ||
232 | { | ||
233 | struct usb_device *dev = port->serial->dev; | ||
234 | int ret = 0; | ||
235 | |||
236 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | ||
237 | MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH, | ||
238 | MOS_WDR_TIMEOUT); | ||
239 | dbg("mos7840_get_reg_sync offset is %x, return val %x\n", reg, *val); | ||
240 | *val = (*val) & 0x00ff; | ||
241 | return ret; | ||
242 | } | ||
243 | |||
244 | /* | ||
245 | * mos7840_set_uart_reg | ||
246 | * To set the Uart register by calling usb_fill_control_urb function by | ||
247 | * passing usb_sndctrlpipe function as parameter. | ||
248 | */ | ||
249 | |||
250 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | ||
251 | __u16 val) | ||
252 | { | ||
253 | |||
254 | struct usb_device *dev = port->serial->dev; | ||
255 | val = val & 0x00ff; | ||
256 | // For the UART control registers, the application number need to be Or'ed | ||
257 | if (mos7840_num_ports == 4) { | ||
258 | val |= | ||
259 | (((__u16) port->number - (__u16) (port->serial->minor)) + | ||
260 | 1) << 8; | ||
261 | dbg("mos7840_set_uart_reg application number is %x\n", val); | ||
262 | } else { | ||
263 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | ||
264 | val |= | ||
265 | (((__u16) port->number - | ||
266 | (__u16) (port->serial->minor)) + 1) << 8; | ||
267 | dbg("mos7840_set_uart_reg application number is %x\n", | ||
268 | val); | ||
269 | } else { | ||
270 | val |= | ||
271 | (((__u16) port->number - | ||
272 | (__u16) (port->serial->minor)) + 2) << 8; | ||
273 | dbg("mos7840_set_uart_reg application number is %x\n", | ||
274 | val); | ||
275 | } | ||
276 | } | ||
277 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | ||
278 | MCS_WR_RTYPE, val, reg, NULL, 0, | ||
279 | MOS_WDR_TIMEOUT); | ||
280 | |||
281 | } | ||
282 | |||
283 | /* | ||
284 | * mos7840_get_uart_reg | ||
285 | * To set the Control register by calling usb_fill_control_urb function | ||
286 | * by passing usb_rcvctrlpipe function as parameter. | ||
287 | */ | ||
288 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | ||
289 | __u16 * val) | ||
290 | { | ||
291 | struct usb_device *dev = port->serial->dev; | ||
292 | int ret = 0; | ||
293 | __u16 Wval; | ||
294 | |||
295 | //dbg("application number is %4x \n",(((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); | ||
296 | /*Wval is same as application number */ | ||
297 | if (mos7840_num_ports == 4) { | ||
298 | Wval = | ||
299 | (((__u16) port->number - (__u16) (port->serial->minor)) + | ||
300 | 1) << 8; | ||
301 | dbg("mos7840_get_uart_reg application number is %x\n", Wval); | ||
302 | } else { | ||
303 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | ||
304 | Wval = | ||
305 | (((__u16) port->number - | ||
306 | (__u16) (port->serial->minor)) + 1) << 8; | ||
307 | dbg("mos7840_get_uart_reg application number is %x\n", | ||
308 | Wval); | ||
309 | } else { | ||
310 | Wval = | ||
311 | (((__u16) port->number - | ||
312 | (__u16) (port->serial->minor)) + 2) << 8; | ||
313 | dbg("mos7840_get_uart_reg application number is %x\n", | ||
314 | Wval); | ||
315 | } | ||
316 | } | ||
317 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | ||
318 | MCS_RD_RTYPE, Wval, reg, val, VENDOR_READ_LENGTH, | ||
319 | MOS_WDR_TIMEOUT); | ||
320 | *val = (*val) & 0x00ff; | ||
321 | return ret; | ||
322 | } | ||
323 | |||
324 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | ||
325 | { | ||
326 | |||
327 | dbg("***************************************\n"); | ||
328 | dbg("SpRegOffset is %2x\n", mos7840_port->SpRegOffset); | ||
329 | dbg("ControlRegOffset is %2x \n", mos7840_port->ControlRegOffset); | ||
330 | dbg("DCRRegOffset is %2x \n", mos7840_port->DcrRegOffset); | ||
331 | dbg("***************************************\n"); | ||
332 | |||
333 | } | ||
334 | |||
335 | /************************************************************************/ | ||
336 | /************************************************************************/ | ||
337 | /* I N T E R F A C E F U N C T I O N S */ | ||
338 | /* I N T E R F A C E F U N C T I O N S */ | ||
339 | /************************************************************************/ | ||
340 | /************************************************************************/ | ||
341 | |||
342 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | ||
343 | struct moschip_port *data) | ||
344 | { | ||
345 | usb_set_serial_port_data(port, (void *)data); | ||
346 | } | ||
347 | |||
348 | static inline struct moschip_port *mos7840_get_port_private(struct | ||
349 | usb_serial_port | ||
350 | *port) | ||
351 | { | ||
352 | return (struct moschip_port *)usb_get_serial_port_data(port); | ||
353 | } | ||
354 | |||
355 | static int mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) | ||
356 | { | ||
357 | struct moschip_port *mos7840_port; | ||
358 | struct async_icount *icount; | ||
359 | mos7840_port = port; | ||
360 | icount = &mos7840_port->icount; | ||
361 | if (new_msr & | ||
362 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | ||
363 | MOS_MSR_DELTA_CD)) { | ||
364 | icount = &mos7840_port->icount; | ||
365 | |||
366 | /* update input line counters */ | ||
367 | if (new_msr & MOS_MSR_DELTA_CTS) { | ||
368 | icount->cts++; | ||
369 | } | ||
370 | if (new_msr & MOS_MSR_DELTA_DSR) { | ||
371 | icount->dsr++; | ||
372 | } | ||
373 | if (new_msr & MOS_MSR_DELTA_CD) { | ||
374 | icount->dcd++; | ||
375 | } | ||
376 | if (new_msr & MOS_MSR_DELTA_RI) { | ||
377 | icount->rng++; | ||
378 | } | ||
379 | } | ||
380 | |||
381 | return 0; | ||
382 | } | ||
383 | |||
384 | static int mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) | ||
385 | { | ||
386 | struct async_icount *icount; | ||
387 | |||
388 | dbg("%s - %02x", __FUNCTION__, new_lsr); | ||
389 | |||
390 | if (new_lsr & SERIAL_LSR_BI) { | ||
391 | // | ||
392 | // Parity and Framing errors only count if they | ||
393 | // occur exclusive of a break being | ||
394 | // received. | ||
395 | // | ||
396 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); | ||
397 | } | ||
398 | |||
399 | /* update input line counters */ | ||
400 | icount = &port->icount; | ||
401 | if (new_lsr & SERIAL_LSR_BI) { | ||
402 | icount->brk++; | ||
403 | } | ||
404 | if (new_lsr & SERIAL_LSR_OE) { | ||
405 | icount->overrun++; | ||
406 | } | ||
407 | if (new_lsr & SERIAL_LSR_PE) { | ||
408 | icount->parity++; | ||
409 | } | ||
410 | if (new_lsr & SERIAL_LSR_FE) { | ||
411 | icount->frame++; | ||
412 | } | ||
413 | |||
414 | return 0; | ||
415 | } | ||
416 | |||
417 | /************************************************************************/ | ||
418 | /************************************************************************/ | ||
419 | /* U S B C A L L B A C K F U N C T I O N S */ | ||
420 | /* U S B C A L L B A C K F U N C T I O N S */ | ||
421 | /************************************************************************/ | ||
422 | /************************************************************************/ | ||
423 | |||
424 | static void mos7840_control_callback(struct urb *urb, struct pt_regs *regs) | ||
425 | { | ||
426 | unsigned char *data; | ||
427 | struct moschip_port *mos7840_port; | ||
428 | __u8 regval = 0x0; | ||
429 | |||
430 | if (!urb) { | ||
431 | dbg("%s", "Invalid Pointer !!!!:\n"); | ||
432 | return; | ||
433 | } | ||
434 | |||
435 | switch (urb->status) { | ||
436 | case 0: | ||
437 | /* success */ | ||
438 | break; | ||
439 | case -ECONNRESET: | ||
440 | case -ENOENT: | ||
441 | case -ESHUTDOWN: | ||
442 | /* this urb is terminated, clean up */ | ||
443 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, | ||
444 | urb->status); | ||
445 | return; | ||
446 | default: | ||
447 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, | ||
448 | urb->status); | ||
449 | goto exit; | ||
450 | } | ||
451 | |||
452 | mos7840_port = (struct moschip_port *)urb->context; | ||
453 | |||
454 | dbg("%s urb buffer size is %d\n", __FUNCTION__, urb->actual_length); | ||
455 | dbg("%s mos7840_port->MsrLsr is %d port %d\n", __FUNCTION__, | ||
456 | mos7840_port->MsrLsr, mos7840_port->port_num); | ||
457 | data = urb->transfer_buffer; | ||
458 | regval = (__u8) data[0]; | ||
459 | dbg("%s data is %x\n", __FUNCTION__, regval); | ||
460 | if (mos7840_port->MsrLsr == 0) | ||
461 | mos7840_handle_new_msr(mos7840_port, regval); | ||
462 | else if (mos7840_port->MsrLsr == 1) | ||
463 | mos7840_handle_new_lsr(mos7840_port, regval); | ||
464 | |||
465 | exit: | ||
466 | return; | ||
467 | } | ||
468 | |||
469 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | ||
470 | __u16 * val) | ||
471 | { | ||
472 | struct usb_device *dev = mcs->port->serial->dev; | ||
473 | struct usb_ctrlrequest *dr = NULL; | ||
474 | unsigned char *buffer = NULL; | ||
475 | int ret = 0; | ||
476 | buffer = (__u8 *) mcs->ctrl_buf; | ||
477 | |||
478 | // dr=(struct usb_ctrlrequest *)(buffer); | ||
479 | dr = (void *)(buffer + 2); | ||
480 | dr->bRequestType = MCS_RD_RTYPE; | ||
481 | dr->bRequest = MCS_RDREQ; | ||
482 | dr->wValue = cpu_to_le16(Wval); //0; | ||
483 | dr->wIndex = cpu_to_le16(reg); | ||
484 | dr->wLength = cpu_to_le16(2); | ||
485 | |||
486 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | ||
487 | (unsigned char *)dr, buffer, 2, | ||
488 | mos7840_control_callback, mcs); | ||
489 | mcs->control_urb->transfer_buffer_length = 2; | ||
490 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | ||
491 | return ret; | ||
492 | } | ||
493 | |||
494 | /***************************************************************************** | ||
495 | * mos7840_interrupt_callback | ||
496 | * this is the callback function for when we have received data on the | ||
497 | * interrupt endpoint. | ||
498 | *****************************************************************************/ | ||
499 | |||
500 | static void mos7840_interrupt_callback(struct urb *urb, struct pt_regs *regs) | ||
501 | { | ||
502 | int result; | ||
503 | int length; | ||
504 | struct moschip_port *mos7840_port; | ||
505 | struct usb_serial *serial; | ||
506 | __u16 Data; | ||
507 | unsigned char *data; | ||
508 | __u8 sp[5], st; | ||
509 | int i; | ||
510 | __u16 wval; | ||
511 | |||
512 | dbg("%s", " : Entering\n"); | ||
513 | if (!urb) { | ||
514 | dbg("%s", "Invalid Pointer !!!!:\n"); | ||
515 | return; | ||
516 | } | ||
517 | |||
518 | switch (urb->status) { | ||
519 | case 0: | ||
520 | /* success */ | ||
521 | break; | ||
522 | case -ECONNRESET: | ||
523 | case -ENOENT: | ||
524 | case -ESHUTDOWN: | ||
525 | /* this urb is terminated, clean up */ | ||
526 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, | ||
527 | urb->status); | ||
528 | return; | ||
529 | default: | ||
530 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, | ||
531 | urb->status); | ||
532 | goto exit; | ||
533 | } | ||
534 | |||
535 | length = urb->actual_length; | ||
536 | data = urb->transfer_buffer; | ||
537 | |||
538 | serial = (struct usb_serial *)urb->context; | ||
539 | |||
540 | /* Moschip get 5 bytes | ||
541 | * Byte 1 IIR Port 1 (port.number is 0) | ||
542 | * Byte 2 IIR Port 2 (port.number is 1) | ||
543 | * Byte 3 IIR Port 3 (port.number is 2) | ||
544 | * Byte 4 IIR Port 4 (port.number is 3) | ||
545 | * Byte 5 FIFO status for both */ | ||
546 | |||
547 | if (length && length > 5) { | ||
548 | dbg("%s \n", "Wrong data !!!"); | ||
549 | return; | ||
550 | } | ||
551 | |||
552 | sp[0] = (__u8) data[0]; | ||
553 | sp[1] = (__u8) data[1]; | ||
554 | sp[2] = (__u8) data[2]; | ||
555 | sp[3] = (__u8) data[3]; | ||
556 | st = (__u8) data[4]; | ||
557 | |||
558 | for (i = 0; i < serial->num_ports; i++) { | ||
559 | mos7840_port = mos7840_get_port_private(serial->port[i]); | ||
560 | wval = | ||
561 | (((__u16) serial->port[i]->number - | ||
562 | (__u16) (serial->minor)) + 1) << 8; | ||
563 | if (mos7840_port->open) { | ||
564 | if (sp[i] & 0x01) { | ||
565 | dbg("SP%d No Interrupt !!!\n", i); | ||
566 | } else { | ||
567 | switch (sp[i] & 0x0f) { | ||
568 | case SERIAL_IIR_RLS: | ||
569 | dbg("Serial Port %d: Receiver status error or ", i); | ||
570 | dbg("address bit detected in 9-bit mode\n"); | ||
571 | mos7840_port->MsrLsr = 1; | ||
572 | mos7840_get_reg(mos7840_port, wval, | ||
573 | LINE_STATUS_REGISTER, | ||
574 | &Data); | ||
575 | break; | ||
576 | case SERIAL_IIR_MS: | ||
577 | dbg("Serial Port %d: Modem status change\n", i); | ||
578 | mos7840_port->MsrLsr = 0; | ||
579 | mos7840_get_reg(mos7840_port, wval, | ||
580 | MODEM_STATUS_REGISTER, | ||
581 | &Data); | ||
582 | break; | ||
583 | } | ||
584 | } | ||
585 | } | ||
586 | } | ||
587 | exit: | ||
588 | result = usb_submit_urb(urb, GFP_ATOMIC); | ||
589 | if (result) { | ||
590 | dev_err(&urb->dev->dev, | ||
591 | "%s - Error %d submitting interrupt urb\n", | ||
592 | __FUNCTION__, result); | ||
593 | } | ||
594 | |||
595 | return; | ||
596 | |||
597 | } | ||
598 | |||
599 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | ||
600 | const char *function) | ||
601 | { | ||
602 | if (!port) { | ||
603 | dbg("%s - port == NULL", function); | ||
604 | return -1; | ||
605 | } | ||
606 | if (!port->serial) { | ||
607 | dbg("%s - port->serial == NULL", function); | ||
608 | return -1; | ||
609 | } | ||
610 | |||
611 | return 0; | ||
612 | } | ||
613 | |||
614 | /* Inline functions to check the sanity of a pointer that is passed to us */ | ||
615 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | ||
616 | const char *function) | ||
617 | { | ||
618 | if (!serial) { | ||
619 | dbg("%s - serial == NULL", function); | ||
620 | return -1; | ||
621 | } | ||
622 | if (!serial->type) { | ||
623 | dbg("%s - serial->type == NULL!", function); | ||
624 | return -1; | ||
625 | } | ||
626 | |||
627 | return 0; | ||
628 | } | ||
629 | |||
630 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | ||
631 | const char *function) | ||
632 | { | ||
633 | /* if no port was specified, or it fails a paranoia check */ | ||
634 | if (!port || | ||
635 | mos7840_port_paranoia_check(port, function) || | ||
636 | mos7840_serial_paranoia_check(port->serial, function)) { | ||
637 | /* then say that we don't have a valid usb_serial thing, which will * end up genrating -ENODEV return values */ | ||
638 | return NULL; | ||
639 | } | ||
640 | |||
641 | return port->serial; | ||
642 | } | ||
643 | |||
644 | /***************************************************************************** | ||
645 | * mos7840_bulk_in_callback | ||
646 | * this is the callback function for when we have received data on the | ||
647 | * bulk in endpoint. | ||
648 | *****************************************************************************/ | ||
649 | |||
650 | static void mos7840_bulk_in_callback(struct urb *urb, struct pt_regs *regs) | ||
651 | { | ||
652 | int status; | ||
653 | unsigned char *data; | ||
654 | struct usb_serial *serial; | ||
655 | struct usb_serial_port *port; | ||
656 | struct moschip_port *mos7840_port; | ||
657 | struct tty_struct *tty; | ||
658 | |||
659 | if (!urb) { | ||
660 | dbg("%s", "Invalid Pointer !!!!:\n"); | ||
661 | return; | ||
662 | } | ||
663 | |||
664 | if (urb->status) { | ||
665 | dbg("nonzero read bulk status received: %d", urb->status); | ||
666 | return; | ||
667 | } | ||
668 | |||
669 | mos7840_port = (struct moschip_port *)urb->context; | ||
670 | if (!mos7840_port) { | ||
671 | dbg("%s", "NULL mos7840_port pointer \n"); | ||
672 | return; | ||
673 | } | ||
674 | |||
675 | port = (struct usb_serial_port *)mos7840_port->port; | ||
676 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
677 | dbg("%s", "Port Paranoia failed \n"); | ||
678 | return; | ||
679 | } | ||
680 | |||
681 | serial = mos7840_get_usb_serial(port, __FUNCTION__); | ||
682 | if (!serial) { | ||
683 | dbg("%s\n", "Bad serial pointer "); | ||
684 | return; | ||
685 | } | ||
686 | |||
687 | dbg("%s\n", "Entering... \n"); | ||
688 | |||
689 | data = urb->transfer_buffer; | ||
690 | |||
691 | dbg("%s", "Entering ........... \n"); | ||
692 | |||
693 | if (urb->actual_length) { | ||
694 | tty = mos7840_port->port->tty; | ||
695 | if (tty) { | ||
696 | tty_buffer_request_room(tty, urb->actual_length); | ||
697 | tty_insert_flip_string(tty, data, urb->actual_length); | ||
698 | dbg(" %s \n", data); | ||
699 | tty_flip_buffer_push(tty); | ||
700 | } | ||
701 | mos7840_port->icount.rx += urb->actual_length; | ||
702 | dbg("mos7840_port->icount.rx is %d:\n", | ||
703 | mos7840_port->icount.rx); | ||
704 | } | ||
705 | |||
706 | if (!mos7840_port->read_urb) { | ||
707 | dbg("%s", "URB KILLED !!!\n"); | ||
708 | return; | ||
709 | } | ||
710 | |||
711 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | ||
712 | mos7840_port->read_urb->dev = serial->dev; | ||
713 | |||
714 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | ||
715 | |||
716 | if (status) { | ||
717 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | ||
718 | status); | ||
719 | } | ||
720 | } | ||
721 | } | ||
722 | |||
723 | /***************************************************************************** | ||
724 | * mos7840_bulk_out_data_callback | ||
725 | * this is the callback function for when we have finished sending serial data | ||
726 | * on the bulk out endpoint. | ||
727 | *****************************************************************************/ | ||
728 | |||
729 | static void mos7840_bulk_out_data_callback(struct urb *urb, | ||
730 | struct pt_regs *regs) | ||
731 | { | ||
732 | struct moschip_port *mos7840_port; | ||
733 | struct tty_struct *tty; | ||
734 | if (!urb) { | ||
735 | dbg("%s", "Invalid Pointer !!!!:\n"); | ||
736 | return; | ||
737 | } | ||
738 | |||
739 | if (urb->status) { | ||
740 | dbg("nonzero write bulk status received:%d\n", urb->status); | ||
741 | return; | ||
742 | } | ||
743 | |||
744 | mos7840_port = (struct moschip_port *)urb->context; | ||
745 | if (!mos7840_port) { | ||
746 | dbg("%s", "NULL mos7840_port pointer \n"); | ||
747 | return; | ||
748 | } | ||
749 | |||
750 | if (mos7840_port_paranoia_check(mos7840_port->port, __FUNCTION__)) { | ||
751 | dbg("%s", "Port Paranoia failed \n"); | ||
752 | return; | ||
753 | } | ||
754 | |||
755 | dbg("%s \n", "Entering ........."); | ||
756 | |||
757 | tty = mos7840_port->port->tty; | ||
758 | |||
759 | if (tty && mos7840_port->open) { | ||
760 | /* let the tty driver wakeup if it has a special * | ||
761 | * write_wakeup function */ | ||
762 | |||
763 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) | ||
764 | && tty->ldisc.write_wakeup) { | ||
765 | (tty->ldisc.write_wakeup) (tty); | ||
766 | } | ||
767 | |||
768 | /* tell the tty driver that something has changed */ | ||
769 | wake_up_interruptible(&tty->write_wait); | ||
770 | } | ||
771 | |||
772 | } | ||
773 | |||
774 | /************************************************************************/ | ||
775 | /* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */ | ||
776 | /************************************************************************/ | ||
777 | #ifdef MCSSerialProbe | ||
778 | static int mos7840_serial_probe(struct usb_serial *serial, | ||
779 | const struct usb_device_id *id) | ||
780 | { | ||
781 | |||
782 | /*need to implement the mode_reg reading and updating\ | ||
783 | structures usb_serial_ device_type\ | ||
784 | (i.e num_ports, num_bulkin,bulkout etc) */ | ||
785 | /* Also we can update the changes attach */ | ||
786 | return 1; | ||
787 | } | ||
788 | #endif | ||
789 | |||
790 | /***************************************************************************** | ||
791 | * mos7840_open | ||
792 | * this function is called by the tty driver when a port is opened | ||
793 | * If successful, we return 0 | ||
794 | * Otherwise we return a negative error number. | ||
795 | *****************************************************************************/ | ||
796 | |||
797 | static int mos7840_open(struct usb_serial_port *port, struct file *filp) | ||
798 | { | ||
799 | int response; | ||
800 | int j; | ||
801 | struct usb_serial *serial; | ||
802 | struct urb *urb; | ||
803 | __u16 Data; | ||
804 | int status; | ||
805 | struct moschip_port *mos7840_port; | ||
806 | |||
807 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
808 | dbg("%s", "Port Paranoia failed \n"); | ||
809 | return -ENODEV; | ||
810 | } | ||
811 | |||
812 | mos7840_num_open_ports++; | ||
813 | serial = port->serial; | ||
814 | |||
815 | if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) { | ||
816 | dbg("%s", "Serial Paranoia failed \n"); | ||
817 | return -ENODEV; | ||
818 | } | ||
819 | |||
820 | mos7840_port = mos7840_get_port_private(port); | ||
821 | |||
822 | if (mos7840_port == NULL) | ||
823 | return -ENODEV; | ||
824 | |||
825 | usb_clear_halt(serial->dev, port->write_urb->pipe); | ||
826 | usb_clear_halt(serial->dev, port->read_urb->pipe); | ||
827 | |||
828 | /* Initialising the write urb pool */ | ||
829 | for (j = 0; j < NUM_URBS; ++j) { | ||
830 | urb = usb_alloc_urb(0, SLAB_ATOMIC); | ||
831 | mos7840_port->write_urb_pool[j] = urb; | ||
832 | |||
833 | if (urb == NULL) { | ||
834 | err("No more urbs???"); | ||
835 | continue; | ||
836 | } | ||
837 | |||
838 | urb->transfer_buffer = NULL; | ||
839 | urb->transfer_buffer = | ||
840 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | ||
841 | if (!urb->transfer_buffer) { | ||
842 | err("%s-out of memory for urb buffers.", __FUNCTION__); | ||
843 | continue; | ||
844 | } | ||
845 | } | ||
846 | |||
847 | /***************************************************************************** | ||
848 | * Initialize MCS7840 -- Write Init values to corresponding Registers | ||
849 | * | ||
850 | * Register Index | ||
851 | * 1 : IER | ||
852 | * 2 : FCR | ||
853 | * 3 : LCR | ||
854 | * 4 : MCR | ||
855 | * | ||
856 | * 0x08 : SP1/2 Control Reg | ||
857 | *****************************************************************************/ | ||
858 | |||
859 | //NEED to check the following Block | ||
860 | |||
861 | status = 0; | ||
862 | Data = 0x0; | ||
863 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | ||
864 | if (status < 0) { | ||
865 | dbg("Reading Spreg failed\n"); | ||
866 | return -1; | ||
867 | } | ||
868 | Data |= 0x80; | ||
869 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | ||
870 | if (status < 0) { | ||
871 | dbg("writing Spreg failed\n"); | ||
872 | return -1; | ||
873 | } | ||
874 | |||
875 | Data &= ~0x80; | ||
876 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | ||
877 | if (status < 0) { | ||
878 | dbg("writing Spreg failed\n"); | ||
879 | return -1; | ||
880 | } | ||
881 | //End of block to be checked | ||
882 | |||
883 | status = 0; | ||
884 | Data = 0x0; | ||
885 | status = | ||
886 | mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); | ||
887 | if (status < 0) { | ||
888 | dbg("Reading Controlreg failed\n"); | ||
889 | return -1; | ||
890 | } | ||
891 | Data |= 0x08; //Driver done bit | ||
892 | Data |= 0x20; //rx_disable | ||
893 | status = 0; | ||
894 | status = | ||
895 | mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); | ||
896 | if (status < 0) { | ||
897 | dbg("writing Controlreg failed\n"); | ||
898 | return -1; | ||
899 | } | ||
900 | //do register settings here | ||
901 | // Set all regs to the device default values. | ||
902 | //////////////////////////////////// | ||
903 | // First Disable all interrupts. | ||
904 | //////////////////////////////////// | ||
905 | |||
906 | Data = 0x00; | ||
907 | status = 0; | ||
908 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | ||
909 | if (status < 0) { | ||
910 | dbg("disableing interrupts failed\n"); | ||
911 | return -1; | ||
912 | } | ||
913 | // Set FIFO_CONTROL_REGISTER to the default value | ||
914 | Data = 0x00; | ||
915 | status = 0; | ||
916 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | ||
917 | if (status < 0) { | ||
918 | dbg("Writing FIFO_CONTROL_REGISTER failed\n"); | ||
919 | return -1; | ||
920 | } | ||
921 | |||
922 | Data = 0xcf; | ||
923 | status = 0; | ||
924 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | ||
925 | if (status < 0) { | ||
926 | dbg("Writing FIFO_CONTROL_REGISTER failed\n"); | ||
927 | return -1; | ||
928 | } | ||
929 | |||
930 | Data = 0x03; | ||
931 | status = 0; | ||
932 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
933 | mos7840_port->shadowLCR = Data; | ||
934 | |||
935 | Data = 0x0b; | ||
936 | status = 0; | ||
937 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
938 | mos7840_port->shadowMCR = Data; | ||
939 | |||
940 | Data = 0x00; | ||
941 | status = 0; | ||
942 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); | ||
943 | mos7840_port->shadowLCR = Data; | ||
944 | |||
945 | Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80 | ||
946 | status = 0; | ||
947 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
948 | |||
949 | Data = 0x0c; | ||
950 | status = 0; | ||
951 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); | ||
952 | |||
953 | Data = 0x0; | ||
954 | status = 0; | ||
955 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); | ||
956 | |||
957 | Data = 0x00; | ||
958 | status = 0; | ||
959 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); | ||
960 | |||
961 | Data = Data & ~SERIAL_LCR_DLAB; | ||
962 | status = 0; | ||
963 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
964 | mos7840_port->shadowLCR = Data; | ||
965 | |||
966 | //clearing Bulkin and Bulkout Fifo | ||
967 | Data = 0x0; | ||
968 | status = 0; | ||
969 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | ||
970 | |||
971 | Data = Data | 0x0c; | ||
972 | status = 0; | ||
973 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | ||
974 | |||
975 | Data = Data & ~0x0c; | ||
976 | status = 0; | ||
977 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | ||
978 | //Finally enable all interrupts | ||
979 | Data = 0x0; | ||
980 | Data = 0x0c; | ||
981 | status = 0; | ||
982 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | ||
983 | |||
984 | //clearing rx_disable | ||
985 | Data = 0x0; | ||
986 | status = 0; | ||
987 | status = | ||
988 | mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); | ||
989 | Data = Data & ~0x20; | ||
990 | status = 0; | ||
991 | status = | ||
992 | mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); | ||
993 | |||
994 | // rx_negate | ||
995 | Data = 0x0; | ||
996 | status = 0; | ||
997 | status = | ||
998 | mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); | ||
999 | Data = Data | 0x10; | ||
1000 | status = 0; | ||
1001 | status = | ||
1002 | mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); | ||
1003 | |||
1004 | /* force low_latency on so that our tty_push actually forces * | ||
1005 | * the data through,otherwise it is scheduled, and with * | ||
1006 | * high data rates (like with OHCI) data can get lost. */ | ||
1007 | |||
1008 | if (port->tty) | ||
1009 | port->tty->low_latency = 1; | ||
1010 | /* Check to see if we've set up our endpoint info yet * | ||
1011 | * (can't set it up in mos7840_startup as the structures * | ||
1012 | * were not set up at that time.) */ | ||
1013 | if (mos7840_num_open_ports == 1) { | ||
1014 | if (serial->port[0]->interrupt_in_buffer == NULL) { | ||
1015 | |||
1016 | /* set up interrupt urb */ | ||
1017 | |||
1018 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, | ||
1019 | serial->dev, | ||
1020 | usb_rcvintpipe(serial->dev, | ||
1021 | serial->port[0]-> | ||
1022 | interrupt_in_endpointAddress), | ||
1023 | serial->port[0]->interrupt_in_buffer, | ||
1024 | serial->port[0]->interrupt_in_urb-> | ||
1025 | transfer_buffer_length, | ||
1026 | mos7840_interrupt_callback, | ||
1027 | serial, | ||
1028 | serial->port[0]->interrupt_in_urb-> | ||
1029 | interval); | ||
1030 | |||
1031 | /* start interrupt read for mos7840 * | ||
1032 | * will continue as long as mos7840 is connected */ | ||
1033 | |||
1034 | response = | ||
1035 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | ||
1036 | GFP_KERNEL); | ||
1037 | if (response) { | ||
1038 | err("%s - Error %d submitting interrupt urb", | ||
1039 | __FUNCTION__, response); | ||
1040 | } | ||
1041 | |||
1042 | } | ||
1043 | |||
1044 | } | ||
1045 | |||
1046 | /* see if we've set up our endpoint info yet * | ||
1047 | * (can't set it up in mos7840_startup as the * | ||
1048 | * structures were not set up at that time.) */ | ||
1049 | |||
1050 | dbg("port number is %d \n", port->number); | ||
1051 | dbg("serial number is %d \n", port->serial->minor); | ||
1052 | dbg("Bulkin endpoint is %d \n", port->bulk_in_endpointAddress); | ||
1053 | dbg("BulkOut endpoint is %d \n", port->bulk_out_endpointAddress); | ||
1054 | dbg("Interrupt endpoint is %d \n", port->interrupt_in_endpointAddress); | ||
1055 | dbg("port's number in the device is %d\n", mos7840_port->port_num); | ||
1056 | mos7840_port->read_urb = port->read_urb; | ||
1057 | |||
1058 | /* set up our bulk in urb */ | ||
1059 | |||
1060 | usb_fill_bulk_urb(mos7840_port->read_urb, | ||
1061 | serial->dev, | ||
1062 | usb_rcvbulkpipe(serial->dev, | ||
1063 | port->bulk_in_endpointAddress), | ||
1064 | port->bulk_in_buffer, | ||
1065 | mos7840_port->read_urb->transfer_buffer_length, | ||
1066 | mos7840_bulk_in_callback, mos7840_port); | ||
1067 | |||
1068 | dbg("mos7840_open: bulkin endpoint is %d\n", | ||
1069 | port->bulk_in_endpointAddress); | ||
1070 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); | ||
1071 | if (response) { | ||
1072 | err("%s - Error %d submitting control urb", __FUNCTION__, | ||
1073 | response); | ||
1074 | } | ||
1075 | |||
1076 | /* initialize our wait queues */ | ||
1077 | init_waitqueue_head(&mos7840_port->wait_chase); | ||
1078 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | ||
1079 | |||
1080 | /* initialize our icount structure */ | ||
1081 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | ||
1082 | |||
1083 | /* initialize our port settings */ | ||
1084 | mos7840_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */ | ||
1085 | /* send a open port command */ | ||
1086 | mos7840_port->open = 1; | ||
1087 | //mos7840_change_port_settings(mos7840_port,old_termios); | ||
1088 | mos7840_port->icount.tx = 0; | ||
1089 | mos7840_port->icount.rx = 0; | ||
1090 | |||
1091 | dbg("\n\nusb_serial serial:%x mos7840_port:%x\n usb_serial_port port:%x\n\n", (unsigned int)serial, (unsigned int)mos7840_port, (unsigned int)port); | ||
1092 | |||
1093 | return 0; | ||
1094 | |||
1095 | } | ||
1096 | |||
1097 | /***************************************************************************** | ||
1098 | * mos7840_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 | *****************************************************************************/ | ||
1106 | |||
1107 | static int mos7840_chars_in_buffer(struct usb_serial_port *port) | ||
1108 | { | ||
1109 | int i; | ||
1110 | int chars = 0; | ||
1111 | struct moschip_port *mos7840_port; | ||
1112 | |||
1113 | dbg("%s \n", " mos7840_chars_in_buffer:entering ..........."); | ||
1114 | |||
1115 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1116 | dbg("%s", "Invalid port \n"); | ||
1117 | return -1; | ||
1118 | } | ||
1119 | |||
1120 | mos7840_port = mos7840_get_port_private(port); | ||
1121 | if (mos7840_port == NULL) { | ||
1122 | dbg("%s \n", "mos7840_break:leaving ..........."); | ||
1123 | return -1; | ||
1124 | } | ||
1125 | |||
1126 | for (i = 0; i < NUM_URBS; ++i) { | ||
1127 | if (mos7840_port->write_urb_pool[i]->status == -EINPROGRESS) { | ||
1128 | chars += URB_TRANSFER_BUFFER_SIZE; | ||
1129 | } | ||
1130 | } | ||
1131 | dbg("%s - returns %d", __FUNCTION__, chars); | ||
1132 | return (chars); | ||
1133 | |||
1134 | } | ||
1135 | |||
1136 | /************************************************************************ | ||
1137 | * | ||
1138 | * mos7840_block_until_tx_empty | ||
1139 | * | ||
1140 | * This function will block the close until one of the following: | ||
1141 | * 1. TX count are 0 | ||
1142 | * 2. The mos7840 has stopped | ||
1143 | * 3. A timout of 3 seconds without activity has expired | ||
1144 | * | ||
1145 | ************************************************************************/ | ||
1146 | static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port) | ||
1147 | { | ||
1148 | int timeout = HZ / 10; | ||
1149 | int wait = 30; | ||
1150 | int count; | ||
1151 | |||
1152 | while (1) { | ||
1153 | |||
1154 | count = mos7840_chars_in_buffer(mos7840_port->port); | ||
1155 | |||
1156 | /* Check for Buffer status */ | ||
1157 | if (count <= 0) { | ||
1158 | return; | ||
1159 | } | ||
1160 | |||
1161 | /* Block the thread for a while */ | ||
1162 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | ||
1163 | timeout); | ||
1164 | |||
1165 | /* No activity.. count down section */ | ||
1166 | wait--; | ||
1167 | if (wait == 0) { | ||
1168 | dbg("%s - TIMEOUT", __FUNCTION__); | ||
1169 | return; | ||
1170 | } else { | ||
1171 | /* Reset timout value back to seconds */ | ||
1172 | wait = 30; | ||
1173 | } | ||
1174 | } | ||
1175 | } | ||
1176 | |||
1177 | /***************************************************************************** | ||
1178 | * mos7840_close | ||
1179 | * this function is called by the tty driver when a port is closed | ||
1180 | *****************************************************************************/ | ||
1181 | |||
1182 | static void mos7840_close(struct usb_serial_port *port, struct file *filp) | ||
1183 | { | ||
1184 | struct usb_serial *serial; | ||
1185 | struct moschip_port *mos7840_port; | ||
1186 | int j; | ||
1187 | __u16 Data; | ||
1188 | |||
1189 | dbg("%s\n", "mos7840_close:entering..."); | ||
1190 | |||
1191 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1192 | dbg("%s", "Port Paranoia failed \n"); | ||
1193 | return; | ||
1194 | } | ||
1195 | |||
1196 | serial = mos7840_get_usb_serial(port, __FUNCTION__); | ||
1197 | if (!serial) { | ||
1198 | dbg("%s", "Serial Paranoia failed \n"); | ||
1199 | return; | ||
1200 | } | ||
1201 | |||
1202 | mos7840_port = mos7840_get_port_private(port); | ||
1203 | |||
1204 | if (mos7840_port == NULL) { | ||
1205 | return; | ||
1206 | } | ||
1207 | |||
1208 | for (j = 0; j < NUM_URBS; ++j) | ||
1209 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | ||
1210 | |||
1211 | /* Freeing Write URBs */ | ||
1212 | for (j = 0; j < NUM_URBS; ++j) { | ||
1213 | if (mos7840_port->write_urb_pool[j]) { | ||
1214 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | ||
1215 | kfree(mos7840_port->write_urb_pool[j]-> | ||
1216 | transfer_buffer); | ||
1217 | |||
1218 | usb_free_urb(mos7840_port->write_urb_pool[j]); | ||
1219 | } | ||
1220 | } | ||
1221 | |||
1222 | if (serial->dev) { | ||
1223 | /* flush and block until tx is empty */ | ||
1224 | mos7840_block_until_tx_empty(mos7840_port); | ||
1225 | } | ||
1226 | |||
1227 | /* While closing port, shutdown all bulk read, write * | ||
1228 | * and interrupt read if they exists */ | ||
1229 | if (serial->dev) { | ||
1230 | |||
1231 | if (mos7840_port->write_urb) { | ||
1232 | dbg("%s", "Shutdown bulk write\n"); | ||
1233 | usb_kill_urb(mos7840_port->write_urb); | ||
1234 | } | ||
1235 | |||
1236 | if (mos7840_port->read_urb) { | ||
1237 | dbg("%s", "Shutdown bulk read\n"); | ||
1238 | usb_kill_urb(mos7840_port->read_urb); | ||
1239 | } | ||
1240 | if ((&mos7840_port->control_urb)) { | ||
1241 | dbg("%s", "Shutdown control read\n"); | ||
1242 | // usb_kill_urb (mos7840_port->control_urb); | ||
1243 | |||
1244 | } | ||
1245 | } | ||
1246 | // if(mos7840_port->ctrl_buf != NULL) | ||
1247 | // kfree(mos7840_port->ctrl_buf); | ||
1248 | mos7840_num_open_ports--; | ||
1249 | dbg("mos7840_num_open_ports in close%d:in port%d\n", | ||
1250 | mos7840_num_open_ports, port->number); | ||
1251 | if (mos7840_num_open_ports == 0) { | ||
1252 | if (serial->port[0]->interrupt_in_urb) { | ||
1253 | dbg("%s", "Shutdown interrupt_in_urb\n"); | ||
1254 | } | ||
1255 | } | ||
1256 | |||
1257 | if (mos7840_port->write_urb) { | ||
1258 | /* if this urb had a transfer buffer already (old tx) free it */ | ||
1259 | |||
1260 | if (mos7840_port->write_urb->transfer_buffer != NULL) { | ||
1261 | kfree(mos7840_port->write_urb->transfer_buffer); | ||
1262 | } | ||
1263 | usb_free_urb(mos7840_port->write_urb); | ||
1264 | } | ||
1265 | |||
1266 | Data = 0x0; | ||
1267 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
1268 | |||
1269 | Data = 0x00; | ||
1270 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | ||
1271 | |||
1272 | mos7840_port->open = 0; | ||
1273 | |||
1274 | dbg("%s \n", "Leaving ............"); | ||
1275 | } | ||
1276 | |||
1277 | /************************************************************************ | ||
1278 | * | ||
1279 | * mos7840_block_until_chase_response | ||
1280 | * | ||
1281 | * This function will block the close until one of the following: | ||
1282 | * 1. Response to our Chase comes from mos7840 | ||
1283 | * 2. A timout of 10 seconds without activity has expired | ||
1284 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) | ||
1285 | * | ||
1286 | ************************************************************************/ | ||
1287 | |||
1288 | static void mos7840_block_until_chase_response(struct moschip_port | ||
1289 | *mos7840_port) | ||
1290 | { | ||
1291 | int timeout = 1 * HZ; | ||
1292 | int wait = 10; | ||
1293 | int count; | ||
1294 | |||
1295 | while (1) { | ||
1296 | count = mos7840_chars_in_buffer(mos7840_port->port); | ||
1297 | |||
1298 | /* Check for Buffer status */ | ||
1299 | if (count <= 0) { | ||
1300 | return; | ||
1301 | } | ||
1302 | |||
1303 | /* Block the thread for a while */ | ||
1304 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | ||
1305 | timeout); | ||
1306 | /* No activity.. count down section */ | ||
1307 | wait--; | ||
1308 | if (wait == 0) { | ||
1309 | dbg("%s - TIMEOUT", __FUNCTION__); | ||
1310 | return; | ||
1311 | } else { | ||
1312 | /* Reset timout value back to seconds */ | ||
1313 | wait = 10; | ||
1314 | } | ||
1315 | } | ||
1316 | |||
1317 | } | ||
1318 | |||
1319 | /***************************************************************************** | ||
1320 | * mos7840_break | ||
1321 | * this function sends a break to the port | ||
1322 | *****************************************************************************/ | ||
1323 | static void mos7840_break(struct usb_serial_port *port, int break_state) | ||
1324 | { | ||
1325 | unsigned char data; | ||
1326 | struct usb_serial *serial; | ||
1327 | struct moschip_port *mos7840_port; | ||
1328 | |||
1329 | dbg("%s \n", "Entering ..........."); | ||
1330 | dbg("mos7840_break: Start\n"); | ||
1331 | |||
1332 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1333 | dbg("%s", "Port Paranoia failed \n"); | ||
1334 | return; | ||
1335 | } | ||
1336 | |||
1337 | serial = mos7840_get_usb_serial(port, __FUNCTION__); | ||
1338 | if (!serial) { | ||
1339 | dbg("%s", "Serial Paranoia failed \n"); | ||
1340 | return; | ||
1341 | } | ||
1342 | |||
1343 | mos7840_port = mos7840_get_port_private(port); | ||
1344 | |||
1345 | if (mos7840_port == NULL) { | ||
1346 | return; | ||
1347 | } | ||
1348 | |||
1349 | if (serial->dev) { | ||
1350 | |||
1351 | /* flush and block until tx is empty */ | ||
1352 | mos7840_block_until_chase_response(mos7840_port); | ||
1353 | } | ||
1354 | |||
1355 | if (break_state == -1) { | ||
1356 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; | ||
1357 | } else { | ||
1358 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; | ||
1359 | } | ||
1360 | |||
1361 | mos7840_port->shadowLCR = data; | ||
1362 | dbg("mcs7840_break mos7840_port->shadowLCR is %x\n", | ||
1363 | mos7840_port->shadowLCR); | ||
1364 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | ||
1365 | mos7840_port->shadowLCR); | ||
1366 | |||
1367 | return; | ||
1368 | } | ||
1369 | |||
1370 | /***************************************************************************** | ||
1371 | * mos7840_write_room | ||
1372 | * this function is called by the tty driver when it wants to know how many | ||
1373 | * bytes of data we can accept for a specific port. | ||
1374 | * If successful, we return the amount of room that we have for this port | ||
1375 | * Otherwise we return a negative error number. | ||
1376 | *****************************************************************************/ | ||
1377 | |||
1378 | static int mos7840_write_room(struct usb_serial_port *port) | ||
1379 | { | ||
1380 | int i; | ||
1381 | int room = 0; | ||
1382 | struct moschip_port *mos7840_port; | ||
1383 | |||
1384 | dbg("%s \n", " mos7840_write_room:entering ..........."); | ||
1385 | |||
1386 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1387 | dbg("%s", "Invalid port \n"); | ||
1388 | dbg("%s \n", " mos7840_write_room:leaving ..........."); | ||
1389 | return -1; | ||
1390 | } | ||
1391 | |||
1392 | mos7840_port = mos7840_get_port_private(port); | ||
1393 | if (mos7840_port == NULL) { | ||
1394 | dbg("%s \n", "mos7840_break:leaving ..........."); | ||
1395 | return -1; | ||
1396 | } | ||
1397 | |||
1398 | for (i = 0; i < NUM_URBS; ++i) { | ||
1399 | if (mos7840_port->write_urb_pool[i]->status != -EINPROGRESS) { | ||
1400 | room += URB_TRANSFER_BUFFER_SIZE; | ||
1401 | } | ||
1402 | } | ||
1403 | |||
1404 | dbg("%s - returns %d", __FUNCTION__, room); | ||
1405 | return (room); | ||
1406 | |||
1407 | } | ||
1408 | |||
1409 | /***************************************************************************** | ||
1410 | * mos7840_write | ||
1411 | * this function is called by the tty driver when data should be written to | ||
1412 | * the port. | ||
1413 | * If successful, we return the number of bytes written, otherwise we | ||
1414 | * return a negative error number. | ||
1415 | *****************************************************************************/ | ||
1416 | |||
1417 | static int mos7840_write(struct usb_serial_port *port, | ||
1418 | const unsigned char *data, int count) | ||
1419 | { | ||
1420 | int status; | ||
1421 | int i; | ||
1422 | int bytes_sent = 0; | ||
1423 | int transfer_size; | ||
1424 | int from_user = 0; | ||
1425 | |||
1426 | struct moschip_port *mos7840_port; | ||
1427 | struct usb_serial *serial; | ||
1428 | struct urb *urb; | ||
1429 | //__u16 Data; | ||
1430 | const unsigned char *current_position = data; | ||
1431 | unsigned char *data1; | ||
1432 | dbg("%s \n", "entering ..........."); | ||
1433 | //dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",mos7840_port->shadowLCR); | ||
1434 | |||
1435 | #ifdef NOTMOS7840 | ||
1436 | Data = 0x00; | ||
1437 | status = 0; | ||
1438 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); | ||
1439 | mos7840_port->shadowLCR = Data; | ||
1440 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data); | ||
1441 | dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", | ||
1442 | mos7840_port->shadowLCR); | ||
1443 | |||
1444 | //Data = 0x03; | ||
1445 | //status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); | ||
1446 | //mos7840_port->shadowLCR=Data;//Need to add later | ||
1447 | |||
1448 | Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80 | ||
1449 | status = 0; | ||
1450 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
1451 | |||
1452 | //Data = 0x0c; | ||
1453 | //status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); | ||
1454 | Data = 0x00; | ||
1455 | status = 0; | ||
1456 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); | ||
1457 | dbg("mos7840_write:DLL value is %x\n", Data); | ||
1458 | |||
1459 | Data = 0x0; | ||
1460 | status = 0; | ||
1461 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); | ||
1462 | dbg("mos7840_write:DLM value is %x\n", Data); | ||
1463 | |||
1464 | Data = Data & ~SERIAL_LCR_DLAB; | ||
1465 | dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", | ||
1466 | mos7840_port->shadowLCR); | ||
1467 | status = 0; | ||
1468 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
1469 | #endif | ||
1470 | |||
1471 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1472 | dbg("%s", "Port Paranoia failed \n"); | ||
1473 | return -1; | ||
1474 | } | ||
1475 | |||
1476 | serial = port->serial; | ||
1477 | if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) { | ||
1478 | dbg("%s", "Serial Paranoia failed \n"); | ||
1479 | return -1; | ||
1480 | } | ||
1481 | |||
1482 | mos7840_port = mos7840_get_port_private(port); | ||
1483 | if (mos7840_port == NULL) { | ||
1484 | dbg("%s", "mos7840_port is NULL\n"); | ||
1485 | return -1; | ||
1486 | } | ||
1487 | |||
1488 | /* try to find a free urb in the list */ | ||
1489 | urb = NULL; | ||
1490 | |||
1491 | for (i = 0; i < NUM_URBS; ++i) { | ||
1492 | if (mos7840_port->write_urb_pool[i]->status != -EINPROGRESS) { | ||
1493 | urb = mos7840_port->write_urb_pool[i]; | ||
1494 | dbg("\nURB:%d", i); | ||
1495 | break; | ||
1496 | } | ||
1497 | } | ||
1498 | |||
1499 | if (urb == NULL) { | ||
1500 | dbg("%s - no more free urbs", __FUNCTION__); | ||
1501 | goto exit; | ||
1502 | } | ||
1503 | |||
1504 | if (urb->transfer_buffer == NULL) { | ||
1505 | urb->transfer_buffer = | ||
1506 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | ||
1507 | |||
1508 | if (urb->transfer_buffer == NULL) { | ||
1509 | err("%s no more kernel memory...", __FUNCTION__); | ||
1510 | goto exit; | ||
1511 | } | ||
1512 | } | ||
1513 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | ||
1514 | |||
1515 | if (from_user) { | ||
1516 | if (copy_from_user | ||
1517 | (urb->transfer_buffer, current_position, transfer_size)) { | ||
1518 | bytes_sent = -EFAULT; | ||
1519 | goto exit; | ||
1520 | } | ||
1521 | } else { | ||
1522 | memcpy(urb->transfer_buffer, current_position, transfer_size); | ||
1523 | } | ||
1524 | |||
1525 | /* fill urb with data and submit */ | ||
1526 | usb_fill_bulk_urb(urb, | ||
1527 | serial->dev, | ||
1528 | usb_sndbulkpipe(serial->dev, | ||
1529 | port->bulk_out_endpointAddress), | ||
1530 | urb->transfer_buffer, | ||
1531 | transfer_size, | ||
1532 | mos7840_bulk_out_data_callback, mos7840_port); | ||
1533 | |||
1534 | data1 = urb->transfer_buffer; | ||
1535 | dbg("\nbulkout endpoint is %d", port->bulk_out_endpointAddress); | ||
1536 | |||
1537 | /* send it down the pipe */ | ||
1538 | status = usb_submit_urb(urb, GFP_ATOMIC); | ||
1539 | |||
1540 | if (status) { | ||
1541 | err("%s - usb_submit_urb(write bulk) failed with status = %d", | ||
1542 | __FUNCTION__, status); | ||
1543 | bytes_sent = status; | ||
1544 | goto exit; | ||
1545 | } | ||
1546 | bytes_sent = transfer_size; | ||
1547 | mos7840_port->icount.tx += transfer_size; | ||
1548 | dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); | ||
1549 | exit: | ||
1550 | |||
1551 | return bytes_sent; | ||
1552 | |||
1553 | } | ||
1554 | |||
1555 | /***************************************************************************** | ||
1556 | * mos7840_throttle | ||
1557 | * this function is called by the tty driver when it wants to stop the data | ||
1558 | * being read from the port. | ||
1559 | *****************************************************************************/ | ||
1560 | |||
1561 | static void mos7840_throttle(struct usb_serial_port *port) | ||
1562 | { | ||
1563 | struct moschip_port *mos7840_port; | ||
1564 | struct tty_struct *tty; | ||
1565 | int status; | ||
1566 | |||
1567 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1568 | dbg("%s", "Invalid port \n"); | ||
1569 | return; | ||
1570 | } | ||
1571 | |||
1572 | dbg("- port %d\n", port->number); | ||
1573 | |||
1574 | mos7840_port = mos7840_get_port_private(port); | ||
1575 | |||
1576 | if (mos7840_port == NULL) | ||
1577 | return; | ||
1578 | |||
1579 | if (!mos7840_port->open) { | ||
1580 | dbg("%s\n", "port not opened"); | ||
1581 | return; | ||
1582 | } | ||
1583 | |||
1584 | dbg("%s", "Entering .......... \n"); | ||
1585 | |||
1586 | tty = port->tty; | ||
1587 | if (!tty) { | ||
1588 | dbg("%s - no tty available", __FUNCTION__); | ||
1589 | return; | ||
1590 | } | ||
1591 | |||
1592 | /* if we are implementing XON/XOFF, send the stop character */ | ||
1593 | if (I_IXOFF(tty)) { | ||
1594 | unsigned char stop_char = STOP_CHAR(tty); | ||
1595 | status = mos7840_write(port, &stop_char, 1); | ||
1596 | if (status <= 0) { | ||
1597 | return; | ||
1598 | } | ||
1599 | } | ||
1600 | |||
1601 | /* if we are implementing RTS/CTS, toggle that line */ | ||
1602 | if (tty->termios->c_cflag & CRTSCTS) { | ||
1603 | mos7840_port->shadowMCR &= ~MCR_RTS; | ||
1604 | status = 0; | ||
1605 | status = | ||
1606 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, | ||
1607 | mos7840_port->shadowMCR); | ||
1608 | |||
1609 | if (status < 0) { | ||
1610 | return; | ||
1611 | } | ||
1612 | } | ||
1613 | |||
1614 | return; | ||
1615 | } | ||
1616 | |||
1617 | /***************************************************************************** | ||
1618 | * mos7840_unthrottle | ||
1619 | * this function is called by the tty driver when it wants to resume the data | ||
1620 | * being read from the port (called after SerialThrottle is called) | ||
1621 | *****************************************************************************/ | ||
1622 | static void mos7840_unthrottle(struct usb_serial_port *port) | ||
1623 | { | ||
1624 | struct tty_struct *tty; | ||
1625 | int status; | ||
1626 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | ||
1627 | |||
1628 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1629 | dbg("%s", "Invalid port \n"); | ||
1630 | return; | ||
1631 | } | ||
1632 | |||
1633 | if (mos7840_port == NULL) | ||
1634 | return; | ||
1635 | |||
1636 | if (!mos7840_port->open) { | ||
1637 | dbg("%s - port not opened", __FUNCTION__); | ||
1638 | return; | ||
1639 | } | ||
1640 | |||
1641 | dbg("%s", "Entering .......... \n"); | ||
1642 | |||
1643 | tty = port->tty; | ||
1644 | if (!tty) { | ||
1645 | dbg("%s - no tty available", __FUNCTION__); | ||
1646 | return; | ||
1647 | } | ||
1648 | |||
1649 | /* if we are implementing XON/XOFF, send the start character */ | ||
1650 | if (I_IXOFF(tty)) { | ||
1651 | unsigned char start_char = START_CHAR(tty); | ||
1652 | status = mos7840_write(port, &start_char, 1); | ||
1653 | if (status <= 0) { | ||
1654 | return; | ||
1655 | } | ||
1656 | } | ||
1657 | |||
1658 | /* if we are implementing RTS/CTS, toggle that line */ | ||
1659 | if (tty->termios->c_cflag & CRTSCTS) { | ||
1660 | mos7840_port->shadowMCR |= MCR_RTS; | ||
1661 | status = 0; | ||
1662 | status = | ||
1663 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, | ||
1664 | mos7840_port->shadowMCR); | ||
1665 | if (status < 0) { | ||
1666 | return; | ||
1667 | } | ||
1668 | } | ||
1669 | |||
1670 | return; | ||
1671 | } | ||
1672 | |||
1673 | static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file) | ||
1674 | { | ||
1675 | struct moschip_port *mos7840_port; | ||
1676 | unsigned int result; | ||
1677 | __u16 msr; | ||
1678 | __u16 mcr; | ||
1679 | int status = 0; | ||
1680 | mos7840_port = mos7840_get_port_private(port); | ||
1681 | |||
1682 | dbg("%s - port %d", __FUNCTION__, port->number); | ||
1683 | |||
1684 | if (mos7840_port == NULL) | ||
1685 | return -ENODEV; | ||
1686 | |||
1687 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | ||
1688 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | ||
1689 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | ||
1690 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | ||
1691 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | ||
1692 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | ||
1693 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | ||
1694 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | ||
1695 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | ||
1696 | |||
1697 | dbg("%s - 0x%04X", __FUNCTION__, result); | ||
1698 | |||
1699 | return result; | ||
1700 | } | ||
1701 | |||
1702 | static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file, | ||
1703 | unsigned int set, unsigned int clear) | ||
1704 | { | ||
1705 | struct moschip_port *mos7840_port; | ||
1706 | unsigned int mcr; | ||
1707 | unsigned int status; | ||
1708 | |||
1709 | dbg("%s - port %d", __FUNCTION__, port->number); | ||
1710 | |||
1711 | mos7840_port = mos7840_get_port_private(port); | ||
1712 | |||
1713 | if (mos7840_port == NULL) | ||
1714 | return -ENODEV; | ||
1715 | |||
1716 | mcr = mos7840_port->shadowMCR; | ||
1717 | if (clear & TIOCM_RTS) | ||
1718 | mcr &= ~MCR_RTS; | ||
1719 | if (clear & TIOCM_DTR) | ||
1720 | mcr &= ~MCR_DTR; | ||
1721 | if (clear & TIOCM_LOOP) | ||
1722 | mcr &= ~MCR_LOOPBACK; | ||
1723 | |||
1724 | if (set & TIOCM_RTS) | ||
1725 | mcr |= MCR_RTS; | ||
1726 | if (set & TIOCM_DTR) | ||
1727 | mcr |= MCR_DTR; | ||
1728 | if (set & TIOCM_LOOP) | ||
1729 | mcr |= MCR_LOOPBACK; | ||
1730 | |||
1731 | mos7840_port->shadowMCR = mcr; | ||
1732 | |||
1733 | status = 0; | ||
1734 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); | ||
1735 | if (status < 0) { | ||
1736 | dbg("setting MODEM_CONTROL_REGISTER Failed\n"); | ||
1737 | return -1; | ||
1738 | } | ||
1739 | |||
1740 | return 0; | ||
1741 | } | ||
1742 | |||
1743 | /***************************************************************************** | ||
1744 | * mos7840_calc_baud_rate_divisor | ||
1745 | * this function calculates the proper baud rate divisor for the specified | ||
1746 | * baud rate. | ||
1747 | *****************************************************************************/ | ||
1748 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | ||
1749 | __u16 * clk_sel_val) | ||
1750 | { | ||
1751 | |||
1752 | dbg("%s - %d", __FUNCTION__, baudRate); | ||
1753 | |||
1754 | if (baudRate <= 115200) { | ||
1755 | *divisor = 115200 / baudRate; | ||
1756 | *clk_sel_val = 0x0; | ||
1757 | } | ||
1758 | if ((baudRate > 115200) && (baudRate <= 230400)) { | ||
1759 | *divisor = 230400 / baudRate; | ||
1760 | *clk_sel_val = 0x10; | ||
1761 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | ||
1762 | *divisor = 403200 / baudRate; | ||
1763 | *clk_sel_val = 0x20; | ||
1764 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | ||
1765 | *divisor = 460800 / baudRate; | ||
1766 | *clk_sel_val = 0x30; | ||
1767 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | ||
1768 | *divisor = 806400 / baudRate; | ||
1769 | *clk_sel_val = 0x40; | ||
1770 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | ||
1771 | *divisor = 921600 / baudRate; | ||
1772 | *clk_sel_val = 0x50; | ||
1773 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | ||
1774 | *divisor = 1572864 / baudRate; | ||
1775 | *clk_sel_val = 0x60; | ||
1776 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | ||
1777 | *divisor = 3145728 / baudRate; | ||
1778 | *clk_sel_val = 0x70; | ||
1779 | } | ||
1780 | return 0; | ||
1781 | |||
1782 | #ifdef NOTMCS7840 | ||
1783 | |||
1784 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | ||
1785 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | ||
1786 | *divisor = mos7840_divisor_table[i].Divisor; | ||
1787 | return 0; | ||
1788 | } | ||
1789 | } | ||
1790 | |||
1791 | /* After trying for all the standard baud rates * | ||
1792 | * Try calculating the divisor for this baud rate */ | ||
1793 | |||
1794 | if (baudrate > 75 && baudrate < 230400) { | ||
1795 | /* get the divisor */ | ||
1796 | custom = (__u16) (230400L / baudrate); | ||
1797 | |||
1798 | /* Check for round off */ | ||
1799 | round1 = (__u16) (2304000L / baudrate); | ||
1800 | round = (__u16) (round1 - (custom * 10)); | ||
1801 | if (round > 4) { | ||
1802 | custom++; | ||
1803 | } | ||
1804 | *divisor = custom; | ||
1805 | |||
1806 | dbg(" Baud %d = %d\n", baudrate, custom); | ||
1807 | return 0; | ||
1808 | } | ||
1809 | |||
1810 | dbg("%s\n", " Baud calculation Failed..."); | ||
1811 | return -1; | ||
1812 | #endif | ||
1813 | } | ||
1814 | |||
1815 | /***************************************************************************** | ||
1816 | * mos7840_send_cmd_write_baud_rate | ||
1817 | * this function sends the proper command to change the baud rate of the | ||
1818 | * specified port. | ||
1819 | *****************************************************************************/ | ||
1820 | |||
1821 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | ||
1822 | int baudRate) | ||
1823 | { | ||
1824 | int divisor = 0; | ||
1825 | int status; | ||
1826 | __u16 Data; | ||
1827 | unsigned char number; | ||
1828 | __u16 clk_sel_val; | ||
1829 | struct usb_serial_port *port; | ||
1830 | |||
1831 | if (mos7840_port == NULL) | ||
1832 | return -1; | ||
1833 | |||
1834 | port = (struct usb_serial_port *)mos7840_port->port; | ||
1835 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1836 | dbg("%s", "Invalid port \n"); | ||
1837 | return -1; | ||
1838 | } | ||
1839 | |||
1840 | if (mos7840_serial_paranoia_check(port->serial, __FUNCTION__)) { | ||
1841 | dbg("%s", "Invalid Serial \n"); | ||
1842 | return -1; | ||
1843 | } | ||
1844 | |||
1845 | dbg("%s", "Entering .......... \n"); | ||
1846 | |||
1847 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; | ||
1848 | |||
1849 | dbg("%s - port = %d, baud = %d", __FUNCTION__, | ||
1850 | mos7840_port->port->number, baudRate); | ||
1851 | //reset clk_uart_sel in spregOffset | ||
1852 | if (baudRate > 115200) { | ||
1853 | #ifdef HW_flow_control | ||
1854 | //NOTE: need to see the pther register to modify | ||
1855 | //setting h/w flow control bit to 1; | ||
1856 | status = 0; | ||
1857 | Data = 0x2b; | ||
1858 | mos7840_port->shadowMCR = Data; | ||
1859 | status = | ||
1860 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
1861 | if (status < 0) { | ||
1862 | dbg("Writing spreg failed in set_serial_baud\n"); | ||
1863 | return -1; | ||
1864 | } | ||
1865 | #endif | ||
1866 | |||
1867 | } else { | ||
1868 | #ifdef HW_flow_control | ||
1869 | //setting h/w flow control bit to 0; | ||
1870 | status = 0; | ||
1871 | Data = 0xb; | ||
1872 | mos7840_port->shadowMCR = Data; | ||
1873 | status = | ||
1874 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
1875 | if (status < 0) { | ||
1876 | dbg("Writing spreg failed in set_serial_baud\n"); | ||
1877 | return -1; | ||
1878 | } | ||
1879 | #endif | ||
1880 | |||
1881 | } | ||
1882 | |||
1883 | if (1) //baudRate <= 115200) | ||
1884 | { | ||
1885 | clk_sel_val = 0x0; | ||
1886 | Data = 0x0; | ||
1887 | status = 0; | ||
1888 | status = | ||
1889 | mos7840_calc_baud_rate_divisor(baudRate, &divisor, | ||
1890 | &clk_sel_val); | ||
1891 | status = | ||
1892 | mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, | ||
1893 | &Data); | ||
1894 | if (status < 0) { | ||
1895 | dbg("reading spreg failed in set_serial_baud\n"); | ||
1896 | return -1; | ||
1897 | } | ||
1898 | Data = (Data & 0x8f) | clk_sel_val; | ||
1899 | status = 0; | ||
1900 | status = | ||
1901 | mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | ||
1902 | if (status < 0) { | ||
1903 | dbg("Writing spreg failed in set_serial_baud\n"); | ||
1904 | return -1; | ||
1905 | } | ||
1906 | /* Calculate the Divisor */ | ||
1907 | |||
1908 | if (status) { | ||
1909 | err("%s - bad baud rate", __FUNCTION__); | ||
1910 | dbg("%s\n", "bad baud rate"); | ||
1911 | return status; | ||
1912 | } | ||
1913 | /* Enable access to divisor latch */ | ||
1914 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | ||
1915 | mos7840_port->shadowLCR = Data; | ||
1916 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
1917 | |||
1918 | /* Write the divisor */ | ||
1919 | Data = (unsigned char)(divisor & 0xff); | ||
1920 | dbg("set_serial_baud Value to write DLL is %x\n", Data); | ||
1921 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); | ||
1922 | |||
1923 | Data = (unsigned char)((divisor & 0xff00) >> 8); | ||
1924 | dbg("set_serial_baud Value to write DLM is %x\n", Data); | ||
1925 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); | ||
1926 | |||
1927 | /* Disable access to divisor latch */ | ||
1928 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | ||
1929 | mos7840_port->shadowLCR = Data; | ||
1930 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
1931 | |||
1932 | } | ||
1933 | |||
1934 | return status; | ||
1935 | } | ||
1936 | |||
1937 | /***************************************************************************** | ||
1938 | * mos7840_change_port_settings | ||
1939 | * This routine is called to set the UART on the device to match | ||
1940 | * the specified new settings. | ||
1941 | *****************************************************************************/ | ||
1942 | |||
1943 | static void mos7840_change_port_settings(struct moschip_port *mos7840_port, | ||
1944 | struct termios *old_termios) | ||
1945 | { | ||
1946 | struct tty_struct *tty; | ||
1947 | int baud; | ||
1948 | unsigned cflag; | ||
1949 | unsigned iflag; | ||
1950 | __u8 lData; | ||
1951 | __u8 lParity; | ||
1952 | __u8 lStop; | ||
1953 | int status; | ||
1954 | __u16 Data; | ||
1955 | struct usb_serial_port *port; | ||
1956 | struct usb_serial *serial; | ||
1957 | |||
1958 | if (mos7840_port == NULL) | ||
1959 | return; | ||
1960 | |||
1961 | port = (struct usb_serial_port *)mos7840_port->port; | ||
1962 | |||
1963 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
1964 | dbg("%s", "Invalid port \n"); | ||
1965 | return; | ||
1966 | } | ||
1967 | |||
1968 | if (mos7840_serial_paranoia_check(port->serial, __FUNCTION__)) { | ||
1969 | dbg("%s", "Invalid Serial \n"); | ||
1970 | return; | ||
1971 | } | ||
1972 | |||
1973 | serial = port->serial; | ||
1974 | |||
1975 | dbg("%s - port %d", __FUNCTION__, mos7840_port->port->number); | ||
1976 | |||
1977 | if (!mos7840_port->open) { | ||
1978 | dbg("%s - port not opened", __FUNCTION__); | ||
1979 | return; | ||
1980 | } | ||
1981 | |||
1982 | tty = mos7840_port->port->tty; | ||
1983 | |||
1984 | if ((!tty) || (!tty->termios)) { | ||
1985 | dbg("%s - no tty structures", __FUNCTION__); | ||
1986 | return; | ||
1987 | } | ||
1988 | |||
1989 | dbg("%s", "Entering .......... \n"); | ||
1990 | |||
1991 | lData = LCR_BITS_8; | ||
1992 | lStop = LCR_STOP_1; | ||
1993 | lParity = LCR_PAR_NONE; | ||
1994 | |||
1995 | cflag = tty->termios->c_cflag; | ||
1996 | iflag = tty->termios->c_iflag; | ||
1997 | |||
1998 | /* Change the number of bits */ | ||
1999 | if (cflag & CSIZE) { | ||
2000 | switch (cflag & CSIZE) { | ||
2001 | case CS5: | ||
2002 | lData = LCR_BITS_5; | ||
2003 | break; | ||
2004 | |||
2005 | case CS6: | ||
2006 | lData = LCR_BITS_6; | ||
2007 | break; | ||
2008 | |||
2009 | case CS7: | ||
2010 | lData = LCR_BITS_7; | ||
2011 | break; | ||
2012 | default: | ||
2013 | case CS8: | ||
2014 | lData = LCR_BITS_8; | ||
2015 | break; | ||
2016 | } | ||
2017 | } | ||
2018 | /* Change the Parity bit */ | ||
2019 | if (cflag & PARENB) { | ||
2020 | if (cflag & PARODD) { | ||
2021 | lParity = LCR_PAR_ODD; | ||
2022 | dbg("%s - parity = odd", __FUNCTION__); | ||
2023 | } else { | ||
2024 | lParity = LCR_PAR_EVEN; | ||
2025 | dbg("%s - parity = even", __FUNCTION__); | ||
2026 | } | ||
2027 | |||
2028 | } else { | ||
2029 | dbg("%s - parity = none", __FUNCTION__); | ||
2030 | } | ||
2031 | |||
2032 | if (cflag & CMSPAR) { | ||
2033 | lParity = lParity | 0x20; | ||
2034 | } | ||
2035 | |||
2036 | /* Change the Stop bit */ | ||
2037 | if (cflag & CSTOPB) { | ||
2038 | lStop = LCR_STOP_2; | ||
2039 | dbg("%s - stop bits = 2", __FUNCTION__); | ||
2040 | } else { | ||
2041 | lStop = LCR_STOP_1; | ||
2042 | dbg("%s - stop bits = 1", __FUNCTION__); | ||
2043 | } | ||
2044 | |||
2045 | /* Update the LCR with the correct value */ | ||
2046 | mos7840_port->shadowLCR &= | ||
2047 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | ||
2048 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | ||
2049 | |||
2050 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x\n", | ||
2051 | mos7840_port->shadowLCR); | ||
2052 | /* Disable Interrupts */ | ||
2053 | Data = 0x00; | ||
2054 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | ||
2055 | |||
2056 | Data = 0x00; | ||
2057 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | ||
2058 | |||
2059 | Data = 0xcf; | ||
2060 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | ||
2061 | |||
2062 | /* Send the updated LCR value to the mos7840 */ | ||
2063 | Data = mos7840_port->shadowLCR; | ||
2064 | |||
2065 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | ||
2066 | |||
2067 | Data = 0x00b; | ||
2068 | mos7840_port->shadowMCR = Data; | ||
2069 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
2070 | Data = 0x00b; | ||
2071 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
2072 | |||
2073 | /* set up the MCR register and send it to the mos7840 */ | ||
2074 | |||
2075 | mos7840_port->shadowMCR = MCR_MASTER_IE; | ||
2076 | if (cflag & CBAUD) { | ||
2077 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); | ||
2078 | } | ||
2079 | |||
2080 | if (cflag & CRTSCTS) { | ||
2081 | mos7840_port->shadowMCR |= (MCR_XON_ANY); | ||
2082 | |||
2083 | } else { | ||
2084 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); | ||
2085 | } | ||
2086 | |||
2087 | Data = mos7840_port->shadowMCR; | ||
2088 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
2089 | |||
2090 | /* Determine divisor based on baud rate */ | ||
2091 | baud = tty_get_baud_rate(tty); | ||
2092 | |||
2093 | if (!baud) { | ||
2094 | /* pick a default, any default... */ | ||
2095 | dbg("%s\n", "Picked default baud..."); | ||
2096 | baud = 9600; | ||
2097 | } | ||
2098 | |||
2099 | dbg("%s - baud rate = %d", __FUNCTION__, baud); | ||
2100 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); | ||
2101 | |||
2102 | /* Enable Interrupts */ | ||
2103 | Data = 0x0c; | ||
2104 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | ||
2105 | |||
2106 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | ||
2107 | mos7840_port->read_urb->dev = serial->dev; | ||
2108 | |||
2109 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | ||
2110 | |||
2111 | if (status) { | ||
2112 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | ||
2113 | status); | ||
2114 | } | ||
2115 | } | ||
2116 | wake_up(&mos7840_port->delta_msr_wait); | ||
2117 | mos7840_port->delta_msr_cond = 1; | ||
2118 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x\n", | ||
2119 | mos7840_port->shadowLCR); | ||
2120 | |||
2121 | return; | ||
2122 | } | ||
2123 | |||
2124 | /***************************************************************************** | ||
2125 | * mos7840_set_termios | ||
2126 | * this function is called by the tty driver when it wants to change | ||
2127 | * the termios structure | ||
2128 | *****************************************************************************/ | ||
2129 | |||
2130 | static void mos7840_set_termios(struct usb_serial_port *port, | ||
2131 | struct termios *old_termios) | ||
2132 | { | ||
2133 | int status; | ||
2134 | unsigned int cflag; | ||
2135 | struct usb_serial *serial; | ||
2136 | struct moschip_port *mos7840_port; | ||
2137 | struct tty_struct *tty; | ||
2138 | dbg("mos7840_set_termios: START\n"); | ||
2139 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
2140 | dbg("%s", "Invalid port \n"); | ||
2141 | return; | ||
2142 | } | ||
2143 | |||
2144 | serial = port->serial; | ||
2145 | |||
2146 | if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) { | ||
2147 | dbg("%s", "Invalid Serial \n"); | ||
2148 | return; | ||
2149 | } | ||
2150 | |||
2151 | mos7840_port = mos7840_get_port_private(port); | ||
2152 | |||
2153 | if (mos7840_port == NULL) | ||
2154 | return; | ||
2155 | |||
2156 | tty = port->tty; | ||
2157 | |||
2158 | if (!port->tty || !port->tty->termios) { | ||
2159 | dbg("%s - no tty or termios", __FUNCTION__); | ||
2160 | return; | ||
2161 | } | ||
2162 | |||
2163 | if (!mos7840_port->open) { | ||
2164 | dbg("%s - port not opened", __FUNCTION__); | ||
2165 | return; | ||
2166 | } | ||
2167 | |||
2168 | dbg("%s\n", "setting termios - "); | ||
2169 | |||
2170 | cflag = tty->termios->c_cflag; | ||
2171 | |||
2172 | if (!cflag) { | ||
2173 | dbg("%s %s\n", __FUNCTION__, "cflag is NULL"); | ||
2174 | return; | ||
2175 | } | ||
2176 | |||
2177 | /* check that they really want us to change something */ | ||
2178 | if (old_termios) { | ||
2179 | if ((cflag == old_termios->c_cflag) && | ||
2180 | (RELEVANT_IFLAG(tty->termios->c_iflag) == | ||
2181 | RELEVANT_IFLAG(old_termios->c_iflag))) { | ||
2182 | dbg("%s\n", "Nothing to change"); | ||
2183 | return; | ||
2184 | } | ||
2185 | } | ||
2186 | |||
2187 | dbg("%s - clfag %08x iflag %08x", __FUNCTION__, | ||
2188 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); | ||
2189 | |||
2190 | if (old_termios) { | ||
2191 | dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__, | ||
2192 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); | ||
2193 | } | ||
2194 | |||
2195 | dbg("%s - port %d", __FUNCTION__, port->number); | ||
2196 | |||
2197 | /* change the port settings to the new ones specified */ | ||
2198 | |||
2199 | mos7840_change_port_settings(mos7840_port, old_termios); | ||
2200 | |||
2201 | if (!mos7840_port->read_urb) { | ||
2202 | dbg("%s", "URB KILLED !!!!!\n"); | ||
2203 | return; | ||
2204 | } | ||
2205 | |||
2206 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | ||
2207 | mos7840_port->read_urb->dev = serial->dev; | ||
2208 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | ||
2209 | if (status) { | ||
2210 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | ||
2211 | status); | ||
2212 | } | ||
2213 | } | ||
2214 | return; | ||
2215 | } | ||
2216 | |||
2217 | /***************************************************************************** | ||
2218 | * mos7840_get_lsr_info - get line status register info | ||
2219 | * | ||
2220 | * Purpose: Let user call ioctl() to get info when the UART physically | ||
2221 | * is emptied. On bus types like RS485, the transmitter must | ||
2222 | * release the bus after transmitting. This must be done when | ||
2223 | * the transmit shift register is empty, not be done when the | ||
2224 | * transmit holding register is empty. This functionality | ||
2225 | * allows an RS485 driver to be written in user space. | ||
2226 | *****************************************************************************/ | ||
2227 | |||
2228 | static int mos7840_get_lsr_info(struct moschip_port *mos7840_port, | ||
2229 | unsigned int *value) | ||
2230 | { | ||
2231 | int count; | ||
2232 | unsigned int result = 0; | ||
2233 | |||
2234 | count = mos7840_chars_in_buffer(mos7840_port->port); | ||
2235 | if (count == 0) { | ||
2236 | dbg("%s -- Empty", __FUNCTION__); | ||
2237 | result = TIOCSER_TEMT; | ||
2238 | } | ||
2239 | |||
2240 | if (copy_to_user(value, &result, sizeof(int))) | ||
2241 | return -EFAULT; | ||
2242 | return 0; | ||
2243 | } | ||
2244 | |||
2245 | /***************************************************************************** | ||
2246 | * mos7840_get_bytes_avail - get number of bytes available | ||
2247 | * | ||
2248 | * Purpose: Let user call ioctl to get the count of number of bytes available. | ||
2249 | *****************************************************************************/ | ||
2250 | |||
2251 | static int mos7840_get_bytes_avail(struct moschip_port *mos7840_port, | ||
2252 | unsigned int *value) | ||
2253 | { | ||
2254 | unsigned int result = 0; | ||
2255 | struct tty_struct *tty = mos7840_port->port->tty; | ||
2256 | |||
2257 | if (!tty) | ||
2258 | return -ENOIOCTLCMD; | ||
2259 | |||
2260 | result = tty->read_cnt; | ||
2261 | |||
2262 | dbg("%s(%d) = %d", __FUNCTION__, mos7840_port->port->number, result); | ||
2263 | if (copy_to_user(value, &result, sizeof(int))) | ||
2264 | return -EFAULT; | ||
2265 | |||
2266 | return -ENOIOCTLCMD; | ||
2267 | } | ||
2268 | |||
2269 | /***************************************************************************** | ||
2270 | * mos7840_set_modem_info | ||
2271 | * function to set modem info | ||
2272 | *****************************************************************************/ | ||
2273 | |||
2274 | static int mos7840_set_modem_info(struct moschip_port *mos7840_port, | ||
2275 | unsigned int cmd, unsigned int *value) | ||
2276 | { | ||
2277 | unsigned int mcr; | ||
2278 | unsigned int arg; | ||
2279 | __u16 Data; | ||
2280 | int status; | ||
2281 | struct usb_serial_port *port; | ||
2282 | |||
2283 | if (mos7840_port == NULL) | ||
2284 | return -1; | ||
2285 | |||
2286 | port = (struct usb_serial_port *)mos7840_port->port; | ||
2287 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
2288 | dbg("%s", "Invalid port \n"); | ||
2289 | return -1; | ||
2290 | } | ||
2291 | |||
2292 | mcr = mos7840_port->shadowMCR; | ||
2293 | |||
2294 | if (copy_from_user(&arg, value, sizeof(int))) | ||
2295 | return -EFAULT; | ||
2296 | |||
2297 | switch (cmd) { | ||
2298 | case TIOCMBIS: | ||
2299 | if (arg & TIOCM_RTS) | ||
2300 | mcr |= MCR_RTS; | ||
2301 | if (arg & TIOCM_DTR) | ||
2302 | mcr |= MCR_RTS; | ||
2303 | if (arg & TIOCM_LOOP) | ||
2304 | mcr |= MCR_LOOPBACK; | ||
2305 | break; | ||
2306 | |||
2307 | case TIOCMBIC: | ||
2308 | if (arg & TIOCM_RTS) | ||
2309 | mcr &= ~MCR_RTS; | ||
2310 | if (arg & TIOCM_DTR) | ||
2311 | mcr &= ~MCR_RTS; | ||
2312 | if (arg & TIOCM_LOOP) | ||
2313 | mcr &= ~MCR_LOOPBACK; | ||
2314 | break; | ||
2315 | |||
2316 | case TIOCMSET: | ||
2317 | /* turn off the RTS and DTR and LOOPBACK | ||
2318 | * and then only turn on what was asked to */ | ||
2319 | mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK); | ||
2320 | mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0); | ||
2321 | mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0); | ||
2322 | mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0); | ||
2323 | break; | ||
2324 | } | ||
2325 | |||
2326 | mos7840_port->shadowMCR = mcr; | ||
2327 | |||
2328 | Data = mos7840_port->shadowMCR; | ||
2329 | status = 0; | ||
2330 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | ||
2331 | if (status < 0) { | ||
2332 | dbg("setting MODEM_CONTROL_REGISTER Failed\n"); | ||
2333 | return -1; | ||
2334 | } | ||
2335 | |||
2336 | return 0; | ||
2337 | } | ||
2338 | |||
2339 | /***************************************************************************** | ||
2340 | * mos7840_get_modem_info | ||
2341 | * function to get modem info | ||
2342 | *****************************************************************************/ | ||
2343 | |||
2344 | static int mos7840_get_modem_info(struct moschip_port *mos7840_port, | ||
2345 | unsigned int *value) | ||
2346 | { | ||
2347 | unsigned int result = 0; | ||
2348 | __u16 msr; | ||
2349 | unsigned int mcr = mos7840_port->shadowMCR; | ||
2350 | int status = 0; | ||
2351 | status = | ||
2352 | mos7840_get_uart_reg(mos7840_port->port, MODEM_STATUS_REGISTER, | ||
2353 | &msr); | ||
2354 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ | ||
2355 | |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ | ||
2356 | |((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ | ||
2357 | |((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */ | ||
2358 | |((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ | ||
2359 | |((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ | ||
2360 | |||
2361 | dbg("%s -- %x", __FUNCTION__, result); | ||
2362 | |||
2363 | if (copy_to_user(value, &result, sizeof(int))) | ||
2364 | return -EFAULT; | ||
2365 | return 0; | ||
2366 | } | ||
2367 | |||
2368 | /***************************************************************************** | ||
2369 | * mos7840_get_serial_info | ||
2370 | * function to get information about serial port | ||
2371 | *****************************************************************************/ | ||
2372 | |||
2373 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | ||
2374 | struct serial_struct *retinfo) | ||
2375 | { | ||
2376 | struct serial_struct tmp; | ||
2377 | |||
2378 | if (mos7840_port == NULL) | ||
2379 | return -1; | ||
2380 | |||
2381 | if (!retinfo) | ||
2382 | return -EFAULT; | ||
2383 | |||
2384 | memset(&tmp, 0, sizeof(tmp)); | ||
2385 | |||
2386 | tmp.type = PORT_16550A; | ||
2387 | tmp.line = mos7840_port->port->serial->minor; | ||
2388 | tmp.port = mos7840_port->port->number; | ||
2389 | tmp.irq = 0; | ||
2390 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | ||
2391 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | ||
2392 | tmp.baud_base = 9600; | ||
2393 | tmp.close_delay = 5 * HZ; | ||
2394 | tmp.closing_wait = 30 * HZ; | ||
2395 | |||
2396 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | ||
2397 | return -EFAULT; | ||
2398 | return 0; | ||
2399 | } | ||
2400 | |||
2401 | /***************************************************************************** | ||
2402 | * SerialIoctl | ||
2403 | * this function handles any ioctl calls to the driver | ||
2404 | *****************************************************************************/ | ||
2405 | |||
2406 | static int mos7840_ioctl(struct usb_serial_port *port, struct file *file, | ||
2407 | unsigned int cmd, unsigned long arg) | ||
2408 | { | ||
2409 | struct moschip_port *mos7840_port; | ||
2410 | struct tty_struct *tty; | ||
2411 | |||
2412 | struct async_icount cnow; | ||
2413 | struct async_icount cprev; | ||
2414 | struct serial_icounter_struct icount; | ||
2415 | int mosret = 0; | ||
2416 | int retval; | ||
2417 | struct tty_ldisc *ld; | ||
2418 | |||
2419 | if (mos7840_port_paranoia_check(port, __FUNCTION__)) { | ||
2420 | dbg("%s", "Invalid port \n"); | ||
2421 | return -1; | ||
2422 | } | ||
2423 | |||
2424 | mos7840_port = mos7840_get_port_private(port); | ||
2425 | tty = mos7840_port->port->tty; | ||
2426 | |||
2427 | if (mos7840_port == NULL) | ||
2428 | return -1; | ||
2429 | |||
2430 | dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd); | ||
2431 | |||
2432 | switch (cmd) { | ||
2433 | /* return number of bytes available */ | ||
2434 | |||
2435 | case TIOCINQ: | ||
2436 | dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number); | ||
2437 | return mos7840_get_bytes_avail(mos7840_port, | ||
2438 | (unsigned int *)arg); | ||
2439 | break; | ||
2440 | |||
2441 | case TIOCOUTQ: | ||
2442 | dbg("%s (%d) TIOCOUTQ", __FUNCTION__, port->number); | ||
2443 | return put_user(tty->driver->chars_in_buffer ? | ||
2444 | tty->driver->chars_in_buffer(tty) : 0, | ||
2445 | (int __user *)arg); | ||
2446 | break; | ||
2447 | |||
2448 | case TCFLSH: | ||
2449 | retval = tty_check_change(tty); | ||
2450 | if (retval) | ||
2451 | return retval; | ||
2452 | |||
2453 | ld = tty_ldisc_ref(tty); | ||
2454 | switch (arg) { | ||
2455 | case TCIFLUSH: | ||
2456 | if (ld && ld->flush_buffer) | ||
2457 | ld->flush_buffer(tty); | ||
2458 | break; | ||
2459 | case TCIOFLUSH: | ||
2460 | if (ld && ld->flush_buffer) | ||
2461 | ld->flush_buffer(tty); | ||
2462 | /* fall through */ | ||
2463 | case TCOFLUSH: | ||
2464 | if (tty->driver->flush_buffer) | ||
2465 | tty->driver->flush_buffer(tty); | ||
2466 | break; | ||
2467 | default: | ||
2468 | tty_ldisc_deref(ld); | ||
2469 | return -EINVAL; | ||
2470 | } | ||
2471 | tty_ldisc_deref(ld); | ||
2472 | return 0; | ||
2473 | |||
2474 | case TCGETS: | ||
2475 | if (kernel_termios_to_user_termios | ||
2476 | ((struct termios __user *)arg, tty->termios)) | ||
2477 | return -EFAULT; | ||
2478 | return 0; | ||
2479 | |||
2480 | case TIOCSERGETLSR: | ||
2481 | dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number); | ||
2482 | return mos7840_get_lsr_info(mos7840_port, (unsigned int *)arg); | ||
2483 | return 0; | ||
2484 | |||
2485 | case TIOCMBIS: | ||
2486 | case TIOCMBIC: | ||
2487 | case TIOCMSET: | ||
2488 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, | ||
2489 | port->number); | ||
2490 | mosret = | ||
2491 | mos7840_set_modem_info(mos7840_port, cmd, | ||
2492 | (unsigned int *)arg); | ||
2493 | return mosret; | ||
2494 | |||
2495 | case TIOCMGET: | ||
2496 | dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number); | ||
2497 | return mos7840_get_modem_info(mos7840_port, | ||
2498 | (unsigned int *)arg); | ||
2499 | |||
2500 | case TIOCGSERIAL: | ||
2501 | dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number); | ||
2502 | return mos7840_get_serial_info(mos7840_port, | ||
2503 | (struct serial_struct *)arg); | ||
2504 | |||
2505 | case TIOCSSERIAL: | ||
2506 | dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number); | ||
2507 | break; | ||
2508 | |||
2509 | case TIOCMIWAIT: | ||
2510 | dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); | ||
2511 | cprev = mos7840_port->icount; | ||
2512 | while (1) { | ||
2513 | //interruptible_sleep_on(&mos7840_port->delta_msr_wait); | ||
2514 | mos7840_port->delta_msr_cond = 0; | ||
2515 | wait_event_interruptible(mos7840_port->delta_msr_wait, | ||
2516 | (mos7840_port-> | ||
2517 | delta_msr_cond == 1)); | ||
2518 | |||
2519 | /* see if a signal did it */ | ||
2520 | if (signal_pending(current)) | ||
2521 | return -ERESTARTSYS; | ||
2522 | cnow = mos7840_port->icount; | ||
2523 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | ||
2524 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | ||
2525 | return -EIO; /* no change => error */ | ||
2526 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | ||
2527 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | ||
2528 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | ||
2529 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | ||
2530 | return 0; | ||
2531 | } | ||
2532 | cprev = cnow; | ||
2533 | } | ||
2534 | /* NOTREACHED */ | ||
2535 | break; | ||
2536 | |||
2537 | case TIOCGICOUNT: | ||
2538 | cnow = mos7840_port->icount; | ||
2539 | icount.cts = cnow.cts; | ||
2540 | icount.dsr = cnow.dsr; | ||
2541 | icount.rng = cnow.rng; | ||
2542 | icount.dcd = cnow.dcd; | ||
2543 | icount.rx = cnow.rx; | ||
2544 | icount.tx = cnow.tx; | ||
2545 | icount.frame = cnow.frame; | ||
2546 | icount.overrun = cnow.overrun; | ||
2547 | icount.parity = cnow.parity; | ||
2548 | icount.brk = cnow.brk; | ||
2549 | icount.buf_overrun = cnow.buf_overrun; | ||
2550 | |||
2551 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, | ||
2552 | port->number, icount.rx, icount.tx); | ||
2553 | if (copy_to_user((void *)arg, &icount, sizeof(icount))) | ||
2554 | return -EFAULT; | ||
2555 | return 0; | ||
2556 | |||
2557 | case TIOCEXBAUD: | ||
2558 | return 0; | ||
2559 | default: | ||
2560 | break; | ||
2561 | } | ||
2562 | |||
2563 | return -ENOIOCTLCMD; | ||
2564 | } | ||
2565 | |||
2566 | static int mos7840_calc_num_ports(struct usb_serial *serial) | ||
2567 | { | ||
2568 | |||
2569 | dbg("numberofendpoints: %d \n", | ||
2570 | (int)serial->interface->cur_altsetting->desc.bNumEndpoints); | ||
2571 | dbg("numberofendpoints: %d \n", | ||
2572 | (int)serial->interface->altsetting->desc.bNumEndpoints); | ||
2573 | if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { | ||
2574 | mos7840_num_ports = 2; | ||
2575 | serial->type->num_ports = 2; | ||
2576 | } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) { | ||
2577 | mos7840_num_ports = 4; | ||
2578 | serial->type->num_bulk_in = 4; | ||
2579 | serial->type->num_bulk_out = 4; | ||
2580 | serial->type->num_ports = 4; | ||
2581 | } | ||
2582 | |||
2583 | return mos7840_num_ports; | ||
2584 | } | ||
2585 | |||
2586 | /**************************************************************************** | ||
2587 | * mos7840_startup | ||
2588 | ****************************************************************************/ | ||
2589 | |||
2590 | static int mos7840_startup(struct usb_serial *serial) | ||
2591 | { | ||
2592 | struct moschip_port *mos7840_port; | ||
2593 | struct usb_device *dev; | ||
2594 | int i, status; | ||
2595 | |||
2596 | __u16 Data; | ||
2597 | dbg("%s \n", " mos7840_startup :entering.........."); | ||
2598 | |||
2599 | if (!serial) { | ||
2600 | dbg("%s\n", "Invalid Handler"); | ||
2601 | return -1; | ||
2602 | } | ||
2603 | |||
2604 | dev = serial->dev; | ||
2605 | |||
2606 | dbg("%s\n", "Entering..."); | ||
2607 | |||
2608 | /* we set up the pointers to the endpoints in the mos7840_open * | ||
2609 | * function, as the structures aren't created yet. */ | ||
2610 | |||
2611 | /* set up port private structures */ | ||
2612 | for (i = 0; i < serial->num_ports; ++i) { | ||
2613 | mos7840_port = kmalloc(sizeof(struct moschip_port), GFP_KERNEL); | ||
2614 | if (mos7840_port == NULL) { | ||
2615 | err("%s - Out of memory", __FUNCTION__); | ||
2616 | return -ENOMEM; | ||
2617 | } | ||
2618 | memset(mos7840_port, 0, sizeof(struct moschip_port)); | ||
2619 | |||
2620 | /* Initialize all port interrupt end point to port 0 int endpoint * | ||
2621 | * Our device has only one interrupt end point comman to all port */ | ||
2622 | |||
2623 | mos7840_port->port = serial->port[i]; | ||
2624 | mos7840_set_port_private(serial->port[i], mos7840_port); | ||
2625 | |||
2626 | mos7840_port->port_num = ((serial->port[i]->number - | ||
2627 | (serial->port[i]->serial->minor)) + | ||
2628 | 1); | ||
2629 | |||
2630 | if (mos7840_port->port_num == 1) { | ||
2631 | mos7840_port->SpRegOffset = 0x0; | ||
2632 | mos7840_port->ControlRegOffset = 0x1; | ||
2633 | mos7840_port->DcrRegOffset = 0x4; | ||
2634 | } else if ((mos7840_port->port_num == 2) | ||
2635 | && (mos7840_num_ports == 4)) { | ||
2636 | mos7840_port->SpRegOffset = 0x8; | ||
2637 | mos7840_port->ControlRegOffset = 0x9; | ||
2638 | mos7840_port->DcrRegOffset = 0x16; | ||
2639 | } else if ((mos7840_port->port_num == 2) | ||
2640 | && (mos7840_num_ports == 2)) { | ||
2641 | mos7840_port->SpRegOffset = 0xa; | ||
2642 | mos7840_port->ControlRegOffset = 0xb; | ||
2643 | mos7840_port->DcrRegOffset = 0x19; | ||
2644 | } else if ((mos7840_port->port_num == 3) | ||
2645 | && (mos7840_num_ports == 4)) { | ||
2646 | mos7840_port->SpRegOffset = 0xa; | ||
2647 | mos7840_port->ControlRegOffset = 0xb; | ||
2648 | mos7840_port->DcrRegOffset = 0x19; | ||
2649 | } else if ((mos7840_port->port_num == 4) | ||
2650 | && (mos7840_num_ports == 4)) { | ||
2651 | mos7840_port->SpRegOffset = 0xc; | ||
2652 | mos7840_port->ControlRegOffset = 0xd; | ||
2653 | mos7840_port->DcrRegOffset = 0x1c; | ||
2654 | } | ||
2655 | mos7840_dump_serial_port(mos7840_port); | ||
2656 | |||
2657 | mos7840_set_port_private(serial->port[i], mos7840_port); | ||
2658 | |||
2659 | //enable rx_disable bit in control register | ||
2660 | |||
2661 | status = | ||
2662 | mos7840_get_reg_sync(serial->port[i], | ||
2663 | mos7840_port->ControlRegOffset, &Data); | ||
2664 | if (status < 0) { | ||
2665 | dbg("Reading ControlReg failed status-0x%x\n", status); | ||
2666 | break; | ||
2667 | } else | ||
2668 | dbg("ControlReg Reading success val is %x, status%d\n", | ||
2669 | Data, status); | ||
2670 | Data |= 0x08; //setting driver done bit | ||
2671 | Data |= 0x04; //sp1_bit to have cts change reflect in modem status reg | ||
2672 | |||
2673 | //Data |= 0x20; //rx_disable bit | ||
2674 | status = 0; | ||
2675 | status = | ||
2676 | mos7840_set_reg_sync(serial->port[i], | ||
2677 | mos7840_port->ControlRegOffset, Data); | ||
2678 | if (status < 0) { | ||
2679 | dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status); | ||
2680 | break; | ||
2681 | } else | ||
2682 | dbg("ControlReg Writing success(rx_disable) status%d\n", | ||
2683 | status); | ||
2684 | |||
2685 | //Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 and 0x24 in DCR3 | ||
2686 | Data = 0x01; | ||
2687 | status = 0; | ||
2688 | status = | ||
2689 | mos7840_set_reg_sync(serial->port[i], | ||
2690 | (__u16) (mos7840_port->DcrRegOffset + | ||
2691 | 0), Data); | ||
2692 | if (status < 0) { | ||
2693 | dbg("Writing DCR0 failed status-0x%x\n", status); | ||
2694 | break; | ||
2695 | } else | ||
2696 | dbg("DCR0 Writing success status%d\n", status); | ||
2697 | |||
2698 | Data = 0x05; | ||
2699 | status = 0; | ||
2700 | status = | ||
2701 | mos7840_set_reg_sync(serial->port[i], | ||
2702 | (__u16) (mos7840_port->DcrRegOffset + | ||
2703 | 1), Data); | ||
2704 | if (status < 0) { | ||
2705 | dbg("Writing DCR1 failed status-0x%x\n", status); | ||
2706 | break; | ||
2707 | } else | ||
2708 | dbg("DCR1 Writing success status%d\n", status); | ||
2709 | |||
2710 | Data = 0x24; | ||
2711 | status = 0; | ||
2712 | status = | ||
2713 | mos7840_set_reg_sync(serial->port[i], | ||
2714 | (__u16) (mos7840_port->DcrRegOffset + | ||
2715 | 2), Data); | ||
2716 | if (status < 0) { | ||
2717 | dbg("Writing DCR2 failed status-0x%x\n", status); | ||
2718 | break; | ||
2719 | } else | ||
2720 | dbg("DCR2 Writing success status%d\n", status); | ||
2721 | |||
2722 | // write values in clkstart0x0 and clkmulti 0x20 | ||
2723 | Data = 0x0; | ||
2724 | status = 0; | ||
2725 | status = | ||
2726 | mos7840_set_reg_sync(serial->port[i], | ||
2727 | CLK_START_VALUE_REGISTER, Data); | ||
2728 | if (status < 0) { | ||
2729 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | ||
2730 | break; | ||
2731 | } else | ||
2732 | dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status); | ||
2733 | |||
2734 | Data = 0x20; | ||
2735 | status = 0; | ||
2736 | status = | ||
2737 | mos7840_set_reg_sync(serial->port[i], CLK_MULTI_REGISTER, | ||
2738 | Data); | ||
2739 | if (status < 0) { | ||
2740 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n", | ||
2741 | status); | ||
2742 | break; | ||
2743 | } else | ||
2744 | dbg("CLK_MULTI_REGISTER Writing success status%d\n", | ||
2745 | status); | ||
2746 | |||
2747 | //write value 0x0 to scratchpad register | ||
2748 | Data = 0x00; | ||
2749 | status = 0; | ||
2750 | status = | ||
2751 | mos7840_set_uart_reg(serial->port[i], SCRATCH_PAD_REGISTER, | ||
2752 | Data); | ||
2753 | if (status < 0) { | ||
2754 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", | ||
2755 | status); | ||
2756 | break; | ||
2757 | } else | ||
2758 | dbg("SCRATCH_PAD_REGISTER Writing success status%d\n", | ||
2759 | status); | ||
2760 | |||
2761 | //Zero Length flag register | ||
2762 | if ((mos7840_port->port_num != 1) | ||
2763 | && (mos7840_num_ports == 2)) { | ||
2764 | |||
2765 | Data = 0xff; | ||
2766 | status = 0; | ||
2767 | status = mos7840_set_reg_sync(serial->port[i], | ||
2768 | (__u16) (ZLP_REG1 + | ||
2769 | ((__u16) | ||
2770 | mos7840_port-> | ||
2771 | port_num)), | ||
2772 | Data); | ||
2773 | dbg("ZLIP offset%x\n", | ||
2774 | (__u16) (ZLP_REG1 + | ||
2775 | ((__u16) mos7840_port->port_num))); | ||
2776 | if (status < 0) { | ||
2777 | dbg("Writing ZLP_REG%d failed status-0x%x\n", | ||
2778 | i + 2, status); | ||
2779 | break; | ||
2780 | } else | ||
2781 | dbg("ZLP_REG%d Writing success status%d\n", | ||
2782 | i + 2, status); | ||
2783 | } else { | ||
2784 | Data = 0xff; | ||
2785 | status = 0; | ||
2786 | status = mos7840_set_reg_sync(serial->port[i], | ||
2787 | (__u16) (ZLP_REG1 + | ||
2788 | ((__u16) | ||
2789 | mos7840_port-> | ||
2790 | port_num) - | ||
2791 | 0x1), Data); | ||
2792 | dbg("ZLIP offset%x\n", | ||
2793 | (__u16) (ZLP_REG1 + | ||
2794 | ((__u16) mos7840_port->port_num) - 0x1)); | ||
2795 | if (status < 0) { | ||
2796 | dbg("Writing ZLP_REG%d failed status-0x%x\n", | ||
2797 | i + 1, status); | ||
2798 | break; | ||
2799 | } else | ||
2800 | dbg("ZLP_REG%d Writing success status%d\n", | ||
2801 | i + 1, status); | ||
2802 | |||
2803 | } | ||
2804 | mos7840_port->control_urb = usb_alloc_urb(0, SLAB_ATOMIC); | ||
2805 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); | ||
2806 | |||
2807 | } | ||
2808 | |||
2809 | //Zero Length flag enable | ||
2810 | Data = 0x0f; | ||
2811 | status = 0; | ||
2812 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); | ||
2813 | if (status < 0) { | ||
2814 | dbg("Writing ZLP_REG5 failed status-0x%x\n", status); | ||
2815 | return -1; | ||
2816 | } else | ||
2817 | dbg("ZLP_REG5 Writing success status%d\n", status); | ||
2818 | |||
2819 | /* setting configuration feature to one */ | ||
2820 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | ||
2821 | (__u8) 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 5 * HZ); | ||
2822 | return 0; | ||
2823 | } | ||
2824 | |||
2825 | /**************************************************************************** | ||
2826 | * mos7840_shutdown | ||
2827 | * This function is called whenever the device is removed from the usb bus. | ||
2828 | ****************************************************************************/ | ||
2829 | |||
2830 | static void mos7840_shutdown(struct usb_serial *serial) | ||
2831 | { | ||
2832 | int i; | ||
2833 | struct moschip_port *mos7840_port; | ||
2834 | dbg("%s \n", " shutdown :entering.........."); | ||
2835 | |||
2836 | if (!serial) { | ||
2837 | dbg("%s", "Invalid Handler \n"); | ||
2838 | return; | ||
2839 | } | ||
2840 | |||
2841 | /* check for the ports to be closed,close the ports and disconnect */ | ||
2842 | |||
2843 | /* free private structure allocated for serial port * | ||
2844 | * stop reads and writes on all ports */ | ||
2845 | |||
2846 | for (i = 0; i < serial->num_ports; ++i) { | ||
2847 | mos7840_port = mos7840_get_port_private(serial->port[i]); | ||
2848 | kfree(mos7840_port->ctrl_buf); | ||
2849 | usb_kill_urb(mos7840_port->control_urb); | ||
2850 | kfree(mos7840_port); | ||
2851 | mos7840_set_port_private(serial->port[i], NULL); | ||
2852 | } | ||
2853 | |||
2854 | dbg("%s\n", "Thank u :: "); | ||
2855 | |||
2856 | } | ||
2857 | |||
2858 | static struct usb_serial_driver moschip7840_4port_device = { | ||
2859 | .driver = { | ||
2860 | .owner = THIS_MODULE, | ||
2861 | .name = "mos7840", | ||
2862 | }, | ||
2863 | .description = DRIVER_DESC, | ||
2864 | .id_table = moschip_port_id_table, | ||
2865 | .num_interrupt_in = 1, //NUM_DONT_CARE,//1, | ||
2866 | #ifdef check | ||
2867 | .num_bulk_in = 4, | ||
2868 | .num_bulk_out = 4, | ||
2869 | .num_ports = 4, | ||
2870 | #endif | ||
2871 | .open = mos7840_open, | ||
2872 | .close = mos7840_close, | ||
2873 | .write = mos7840_write, | ||
2874 | .write_room = mos7840_write_room, | ||
2875 | .chars_in_buffer = mos7840_chars_in_buffer, | ||
2876 | .throttle = mos7840_throttle, | ||
2877 | .unthrottle = mos7840_unthrottle, | ||
2878 | .calc_num_ports = mos7840_calc_num_ports, | ||
2879 | #ifdef MCSSerialProbe | ||
2880 | .probe = mos7840_serial_probe, | ||
2881 | #endif | ||
2882 | .ioctl = mos7840_ioctl, | ||
2883 | .set_termios = mos7840_set_termios, | ||
2884 | .break_ctl = mos7840_break, | ||
2885 | .tiocmget = mos7840_tiocmget, | ||
2886 | .tiocmset = mos7840_tiocmset, | ||
2887 | .attach = mos7840_startup, | ||
2888 | .shutdown = mos7840_shutdown, | ||
2889 | .read_bulk_callback = mos7840_bulk_in_callback, | ||
2890 | .read_int_callback = mos7840_interrupt_callback, | ||
2891 | }; | ||
2892 | |||
2893 | static struct usb_driver io_driver = { | ||
2894 | .name = "mos7840", | ||
2895 | .probe = usb_serial_probe, | ||
2896 | .disconnect = usb_serial_disconnect, | ||
2897 | .id_table = moschip_id_table_combined, | ||
2898 | }; | ||
2899 | |||
2900 | /**************************************************************************** | ||
2901 | * moschip7840_init | ||
2902 | * This is called by the module subsystem, or on startup to initialize us | ||
2903 | ****************************************************************************/ | ||
2904 | static int __init moschip7840_init(void) | ||
2905 | { | ||
2906 | int retval; | ||
2907 | |||
2908 | dbg("%s \n", " mos7840_init :entering.........."); | ||
2909 | |||
2910 | /* Register with the usb serial */ | ||
2911 | retval = usb_serial_register(&moschip7840_4port_device); | ||
2912 | |||
2913 | if (retval) | ||
2914 | goto failed_port_device_register; | ||
2915 | |||
2916 | dbg("%s\n", "Entring..."); | ||
2917 | info(DRIVER_DESC " " DRIVER_VERSION); | ||
2918 | |||
2919 | /* Register with the usb */ | ||
2920 | retval = usb_register(&io_driver); | ||
2921 | |||
2922 | if (retval) | ||
2923 | goto failed_usb_register; | ||
2924 | |||
2925 | if (retval == 0) { | ||
2926 | dbg("%s\n", "Leaving..."); | ||
2927 | return 0; | ||
2928 | } | ||
2929 | |||
2930 | failed_usb_register: | ||
2931 | usb_serial_deregister(&moschip7840_4port_device); | ||
2932 | |||
2933 | failed_port_device_register: | ||
2934 | |||
2935 | return retval; | ||
2936 | } | ||
2937 | |||
2938 | /**************************************************************************** | ||
2939 | * moschip7840_exit | ||
2940 | * Called when the driver is about to be unloaded. | ||
2941 | ****************************************************************************/ | ||
2942 | static void __exit moschip7840_exit(void) | ||
2943 | { | ||
2944 | |||
2945 | dbg("%s \n", " mos7840_exit :entering.........."); | ||
2946 | |||
2947 | usb_deregister(&io_driver); | ||
2948 | |||
2949 | usb_serial_deregister(&moschip7840_4port_device); | ||
2950 | |||
2951 | dbg("%s\n", "Entring..."); | ||
2952 | } | ||
2953 | |||
2954 | module_init(moschip7840_init); | ||
2955 | module_exit(moschip7840_exit); | ||
2956 | |||
2957 | /* Module information */ | ||
2958 | MODULE_DESCRIPTION(DRIVER_DESC); | ||
2959 | MODULE_LICENSE("GPL"); | ||
2960 | |||
2961 | module_param(debug, bool, S_IRUGO | S_IWUSR); | ||
2962 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | ||