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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
3f542974 | 2 | /* |
3f542974 PS |
3 | * Clean ups from Moschip version and a few ioctl implementations by: |
4 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | |
5 | * | |
6 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
7 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
8 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/errno.h> | |
3f542974 PS |
14 | #include <linux/slab.h> |
15 | #include <linux/tty.h> | |
16 | #include <linux/tty_driver.h> | |
17 | #include <linux/tty_flip.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/serial.h> | |
20 | #include <linux/usb.h> | |
21 | #include <linux/usb/serial.h> | |
880af9db | 22 | #include <linux/uaccess.h> |
3f542974 | 23 | |
3f542974 PS |
24 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
25 | ||
26 | /* | |
27 | * 16C50 UART register defines | |
28 | */ | |
29 | ||
30 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
31 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
32 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
33 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
34 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
35 | ||
36 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
37 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
38 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
39 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
40 | ||
41 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
42 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
43 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
44 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
45 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
46 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
47 | ||
48 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
49 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
50 | ||
51 | #define MCR_DTR 0x01 /* Assert DTR */ | |
52 | #define MCR_RTS 0x02 /* Assert RTS */ | |
53 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
54 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
55 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
56 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
57 | ||
58 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
59 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
60 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
61 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
62 | ||
63 | /* | |
64 | * Defines used for sending commands to port | |
65 | */ | |
66 | ||
1e658489 | 67 | #define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
3f542974 PS |
68 | |
69 | #define MOS_PORT1 0x0200 | |
70 | #define MOS_PORT2 0x0300 | |
71 | #define MOS_VENREG 0x0000 | |
72 | #define MOS_MAX_PORT 0x02 | |
73 | #define MOS_WRITE 0x0E | |
74 | #define MOS_READ 0x0D | |
75 | ||
76 | /* Requests */ | |
77 | #define MCS_RD_RTYPE 0xC0 | |
78 | #define MCS_WR_RTYPE 0x40 | |
79 | #define MCS_RDREQ 0x0D | |
80 | #define MCS_WRREQ 0x0E | |
81 | #define MCS_CTRL_TIMEOUT 500 | |
82 | #define VENDOR_READ_LENGTH (0x01) | |
83 | ||
84 | #define MAX_NAME_LEN 64 | |
85 | ||
880af9db AC |
86 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
87 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
88 | |
89 | /* For higher baud Rates use TIOCEXBAUD */ | |
90 | #define TIOCEXBAUD 0x5462 | |
91 | ||
92 | /* vendor id and device id defines */ | |
93 | ||
11e1abb4 | 94 | /* The native mos7840/7820 component */ |
3f542974 PS |
95 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
96 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
97 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
0eafe4de | 98 | #define MOSCHIP_DEVICE_ID_7810 0x7810 |
11e1abb4 DL |
99 | /* The native component can have its vendor/device id's overridden |
100 | * in vendor-specific implementations. Such devices can be handled | |
68e24113 | 101 | * by making a change here, in id_table. |
11e1abb4 | 102 | */ |
870408c8 DL |
103 | #define USB_VENDOR_ID_BANDB 0x0856 |
104 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 | |
105 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 | |
106 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
107 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 | |
108 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
109 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
110 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
111 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
112 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
113 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 | |
114 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
115 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 | |
116 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
3f542974 | 117 | |
9d498bea RL |
118 | /* This driver also supports |
119 | * ATEN UC2324 device using Moschip MCS7840 | |
120 | * ATEN UC2322 device using Moschip MCS7820 | |
121 | */ | |
e9b8cffa TC |
122 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
123 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 124 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 125 | |
11e1abb4 | 126 | /* Interrupt Routine Defines */ |
3f542974 PS |
127 | |
128 | #define SERIAL_IIR_RLS 0x06 | |
129 | #define SERIAL_IIR_MS 0x00 | |
130 | ||
131 | /* | |
132 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
133 | */ | |
134 | #define SERIAL_LSR_DR 0x0001 | |
135 | #define SERIAL_LSR_OE 0x0002 | |
136 | #define SERIAL_LSR_PE 0x0004 | |
137 | #define SERIAL_LSR_FE 0x0008 | |
138 | #define SERIAL_LSR_BI 0x0010 | |
139 | ||
140 | #define MOS_MSR_DELTA_CTS 0x10 | |
141 | #define MOS_MSR_DELTA_DSR 0x20 | |
142 | #define MOS_MSR_DELTA_RI 0x40 | |
143 | #define MOS_MSR_DELTA_CD 0x80 | |
144 | ||
880af9db | 145 | /* Serial Port register Address */ |
3f542974 PS |
146 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
147 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
148 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
149 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
150 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
151 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
152 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
153 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
154 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
155 | ||
156 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
157 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
093ea2d3 | 158 | #define GPIO_REGISTER ((__u16)(0x07)) |
3f542974 PS |
159 | |
160 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
161 | ||
162 | /* | |
163 | * URB POOL related defines | |
164 | */ | |
165 | #define NUM_URBS 16 /* URB Count */ | |
166 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
167 | ||
0eafe4de D |
168 | /* LED on/off milliseconds*/ |
169 | #define LED_ON_MS 500 | |
170 | #define LED_OFF_MS 500 | |
171 | ||
d8a083cc JH |
172 | enum mos7840_flag { |
173 | MOS7840_FLAG_CTRL_BUSY, | |
05cf0dec | 174 | MOS7840_FLAG_LED_BUSY, |
d8a083cc | 175 | }; |
3f542974 | 176 | |
b9c87663 | 177 | static const struct usb_device_id id_table[] = { |
3f542974 PS |
178 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
179 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
0eafe4de | 180 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
acf509ae | 181 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 182 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 183 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 184 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
185 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
186 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
187 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
188 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 189 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 190 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 191 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 192 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 193 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 194 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 195 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
196 | {} /* terminating entry */ |
197 | }; | |
68e24113 | 198 | MODULE_DEVICE_TABLE(usb, id_table); |
3f542974 PS |
199 | |
200 | /* This structure holds all of the local port information */ | |
201 | ||
202 | struct moschip_port { | |
203 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
3f542974 PS |
204 | struct urb *read_urb; /* read URB for this port */ |
205 | __u8 shadowLCR; /* last LCR value received */ | |
206 | __u8 shadowMCR; /* last MCR value received */ | |
207 | char open; | |
0de9a702 | 208 | char open_ports; |
3f542974 PS |
209 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
210 | ||
880af9db | 211 | /* Offsets */ |
3f542974 PS |
212 | __u8 SpRegOffset; |
213 | __u8 ControlRegOffset; | |
214 | __u8 DcrRegOffset; | |
880af9db | 215 | /* for processing control URBS in interrupt context */ |
3f542974 | 216 | struct urb *control_urb; |
0de9a702 | 217 | struct usb_ctrlrequest *dr; |
3f542974 PS |
218 | char *ctrl_buf; |
219 | int MsrLsr; | |
220 | ||
0de9a702 | 221 | spinlock_t pool_lock; |
3f542974 | 222 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 223 | char busy[NUM_URBS]; |
50de36f7 | 224 | bool read_urb_busy; |
3f542974 | 225 | |
0eafe4de D |
226 | /* For device(s) with LED indicator */ |
227 | bool has_led; | |
0eafe4de D |
228 | struct timer_list led_timer1; /* Timer for LED on */ |
229 | struct timer_list led_timer2; /* Timer for LED off */ | |
05cf0dec JH |
230 | struct urb *led_urb; |
231 | struct usb_ctrlrequest *led_dr; | |
d8a083cc JH |
232 | |
233 | unsigned long flags; | |
0eafe4de | 234 | }; |
3f542974 | 235 | |
3f542974 PS |
236 | /* |
237 | * mos7840_set_reg_sync | |
238 | * To set the Control register by calling usb_fill_control_urb function | |
239 | * by passing usb_sndctrlpipe function as parameter. | |
240 | */ | |
241 | ||
242 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
243 | __u16 val) | |
244 | { | |
245 | struct usb_device *dev = port->serial->dev; | |
246 | val = val & 0x00ff; | |
9c134a14 | 247 | dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
3f542974 PS |
248 | |
249 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
250 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
251 | MOS_WDR_TIMEOUT); | |
252 | } | |
253 | ||
254 | /* | |
255 | * mos7840_get_reg_sync | |
256 | * To set the Uart register by calling usb_fill_control_urb function by | |
257 | * passing usb_rcvctrlpipe function as parameter. | |
258 | */ | |
259 | ||
260 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 261 | __u16 *val) |
3f542974 PS |
262 | { |
263 | struct usb_device *dev = port->serial->dev; | |
264 | int ret = 0; | |
9e221a35 JH |
265 | u8 *buf; |
266 | ||
267 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
268 | if (!buf) | |
269 | return -ENOMEM; | |
3f542974 PS |
270 | |
271 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 272 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 273 | MOS_WDR_TIMEOUT); |
cd8db057 JH |
274 | if (ret < VENDOR_READ_LENGTH) { |
275 | if (ret >= 0) | |
276 | ret = -EIO; | |
277 | goto out; | |
278 | } | |
279 | ||
9e221a35 | 280 | *val = buf[0]; |
9c134a14 | 281 | dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
cd8db057 | 282 | out: |
9e221a35 | 283 | kfree(buf); |
3f542974 PS |
284 | return ret; |
285 | } | |
286 | ||
287 | /* | |
288 | * mos7840_set_uart_reg | |
289 | * To set the Uart register by calling usb_fill_control_urb function by | |
290 | * passing usb_sndctrlpipe function as parameter. | |
291 | */ | |
292 | ||
293 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
294 | __u16 val) | |
295 | { | |
296 | ||
297 | struct usb_device *dev = port->serial->dev; | |
298 | val = val & 0x00ff; | |
880af9db AC |
299 | /* For the UART control registers, the application number need |
300 | to be Or'ed */ | |
0de9a702 | 301 | if (port->serial->num_ports == 4) { |
1143832e | 302 | val |= ((__u16)port->port_number + 1) << 8; |
3f542974 | 303 | } else { |
1143832e GKH |
304 | if (port->port_number == 0) { |
305 | val |= ((__u16)port->port_number + 1) << 8; | |
3f542974 | 306 | } else { |
1143832e | 307 | val |= ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
308 | } |
309 | } | |
9c134a14 | 310 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
3f542974 PS |
311 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
312 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
313 | MOS_WDR_TIMEOUT); | |
314 | ||
315 | } | |
316 | ||
317 | /* | |
318 | * mos7840_get_uart_reg | |
319 | * To set the Control register by calling usb_fill_control_urb function | |
320 | * by passing usb_rcvctrlpipe function as parameter. | |
321 | */ | |
322 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 323 | __u16 *val) |
3f542974 PS |
324 | { |
325 | struct usb_device *dev = port->serial->dev; | |
326 | int ret = 0; | |
327 | __u16 Wval; | |
9e221a35 JH |
328 | u8 *buf; |
329 | ||
330 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
331 | if (!buf) | |
332 | return -ENOMEM; | |
3f542974 | 333 | |
880af9db | 334 | /* Wval is same as application number */ |
0de9a702 | 335 | if (port->serial->num_ports == 4) { |
1143832e | 336 | Wval = ((__u16)port->port_number + 1) << 8; |
3f542974 | 337 | } else { |
1143832e GKH |
338 | if (port->port_number == 0) { |
339 | Wval = ((__u16)port->port_number + 1) << 8; | |
3f542974 | 340 | } else { |
1143832e | 341 | Wval = ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
342 | } |
343 | } | |
9c134a14 | 344 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
3f542974 | 345 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
9e221a35 | 346 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 347 | MOS_WDR_TIMEOUT); |
cd8db057 JH |
348 | if (ret < VENDOR_READ_LENGTH) { |
349 | if (ret >= 0) | |
350 | ret = -EIO; | |
351 | goto out; | |
352 | } | |
9e221a35 | 353 | *val = buf[0]; |
cd8db057 | 354 | out: |
9e221a35 | 355 | kfree(buf); |
3f542974 PS |
356 | return ret; |
357 | } | |
358 | ||
9c134a14 GKH |
359 | static void mos7840_dump_serial_port(struct usb_serial_port *port, |
360 | struct moschip_port *mos7840_port) | |
3f542974 PS |
361 | { |
362 | ||
9c134a14 GKH |
363 | dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
364 | dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); | |
365 | dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); | |
3f542974 PS |
366 | |
367 | } | |
368 | ||
369 | /************************************************************************/ | |
370 | /************************************************************************/ | |
371 | /* I N T E R F A C E F U N C T I O N S */ | |
372 | /* I N T E R F A C E F U N C T I O N S */ | |
373 | /************************************************************************/ | |
374 | /************************************************************************/ | |
375 | ||
376 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
377 | struct moschip_port *data) | |
378 | { | |
379 | usb_set_serial_port_data(port, (void *)data); | |
380 | } | |
381 | ||
382 | static inline struct moschip_port *mos7840_get_port_private(struct | |
383 | usb_serial_port | |
384 | *port) | |
385 | { | |
386 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
387 | } | |
388 | ||
0de9a702 | 389 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
390 | { |
391 | struct moschip_port *mos7840_port; | |
392 | struct async_icount *icount; | |
393 | mos7840_port = port; | |
3f542974 PS |
394 | if (new_msr & |
395 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
396 | MOS_MSR_DELTA_CD)) { | |
8c1a07ff | 397 | icount = &mos7840_port->port->icount; |
3f542974 PS |
398 | |
399 | /* update input line counters */ | |
c9fac853 | 400 | if (new_msr & MOS_MSR_DELTA_CTS) |
3f542974 | 401 | icount->cts++; |
c9fac853 | 402 | if (new_msr & MOS_MSR_DELTA_DSR) |
3f542974 | 403 | icount->dsr++; |
c9fac853 | 404 | if (new_msr & MOS_MSR_DELTA_CD) |
3f542974 | 405 | icount->dcd++; |
c9fac853 | 406 | if (new_msr & MOS_MSR_DELTA_RI) |
3f542974 | 407 | icount->rng++; |
e670c6af | 408 | |
0c613371 | 409 | wake_up_interruptible(&port->port->port.delta_msr_wait); |
3f542974 | 410 | } |
3f542974 PS |
411 | } |
412 | ||
0de9a702 | 413 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
414 | { |
415 | struct async_icount *icount; | |
416 | ||
3f542974 | 417 | if (new_lsr & SERIAL_LSR_BI) { |
880af9db AC |
418 | /* |
419 | * Parity and Framing errors only count if they | |
420 | * occur exclusive of a break being | |
421 | * received. | |
422 | */ | |
3f542974 PS |
423 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
424 | } | |
425 | ||
426 | /* update input line counters */ | |
8c1a07ff | 427 | icount = &port->port->icount; |
c9fac853 | 428 | if (new_lsr & SERIAL_LSR_BI) |
3f542974 | 429 | icount->brk++; |
c9fac853 | 430 | if (new_lsr & SERIAL_LSR_OE) |
3f542974 | 431 | icount->overrun++; |
c9fac853 | 432 | if (new_lsr & SERIAL_LSR_PE) |
3f542974 | 433 | icount->parity++; |
c9fac853 | 434 | if (new_lsr & SERIAL_LSR_FE) |
3f542974 | 435 | icount->frame++; |
3f542974 PS |
436 | } |
437 | ||
438 | /************************************************************************/ | |
439 | /************************************************************************/ | |
440 | /* U S B C A L L B A C K F U N C T I O N S */ | |
441 | /* U S B C A L L B A C K F U N C T I O N S */ | |
442 | /************************************************************************/ | |
443 | /************************************************************************/ | |
444 | ||
7d12e780 | 445 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
446 | { |
447 | unsigned char *data; | |
448 | struct moschip_port *mos7840_port; | |
9c134a14 | 449 | struct device *dev = &urb->dev->dev; |
3f542974 | 450 | __u8 regval = 0x0; |
0643c724 | 451 | int status = urb->status; |
3f542974 | 452 | |
cdc97792 | 453 | mos7840_port = urb->context; |
0de9a702 | 454 | |
0643c724 | 455 | switch (status) { |
3f542974 PS |
456 | case 0: |
457 | /* success */ | |
458 | break; | |
459 | case -ECONNRESET: | |
460 | case -ENOENT: | |
461 | case -ESHUTDOWN: | |
462 | /* this urb is terminated, clean up */ | |
9c134a14 | 463 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
d8a083cc | 464 | goto out; |
3f542974 | 465 | default: |
9c134a14 | 466 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
d8a083cc | 467 | goto out; |
3f542974 PS |
468 | } |
469 | ||
9c134a14 GKH |
470 | dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); |
471 | dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
472 | mos7840_port->MsrLsr, mos7840_port->port_num); | |
3f542974 PS |
473 | data = urb->transfer_buffer; |
474 | regval = (__u8) data[0]; | |
9c134a14 | 475 | dev_dbg(dev, "%s data is %x\n", __func__, regval); |
3f542974 PS |
476 | if (mos7840_port->MsrLsr == 0) |
477 | mos7840_handle_new_msr(mos7840_port, regval); | |
478 | else if (mos7840_port->MsrLsr == 1) | |
479 | mos7840_handle_new_lsr(mos7840_port, regval); | |
d8a083cc JH |
480 | out: |
481 | clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mos7840_port->flags); | |
3f542974 PS |
482 | } |
483 | ||
484 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 485 | __u16 *val) |
3f542974 PS |
486 | { |
487 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
488 | struct usb_ctrlrequest *dr = mcs->dr; |
489 | unsigned char *buffer = mcs->ctrl_buf; | |
490 | int ret; | |
3f542974 | 491 | |
d8a083cc JH |
492 | if (test_and_set_bit_lock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags)) |
493 | return -EBUSY; | |
494 | ||
3f542974 PS |
495 | dr->bRequestType = MCS_RD_RTYPE; |
496 | dr->bRequest = MCS_RDREQ; | |
880af9db | 497 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
498 | dr->wIndex = cpu_to_le16(reg); |
499 | dr->wLength = cpu_to_le16(2); | |
500 | ||
501 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
502 | (unsigned char *)dr, buffer, 2, | |
503 | mos7840_control_callback, mcs); | |
504 | mcs->control_urb->transfer_buffer_length = 2; | |
505 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
d8a083cc JH |
506 | if (ret) |
507 | clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags); | |
508 | ||
3f542974 PS |
509 | return ret; |
510 | } | |
511 | ||
0eafe4de D |
512 | static void mos7840_set_led_callback(struct urb *urb) |
513 | { | |
514 | switch (urb->status) { | |
515 | case 0: | |
516 | /* Success */ | |
517 | break; | |
518 | case -ECONNRESET: | |
519 | case -ENOENT: | |
520 | case -ESHUTDOWN: | |
521 | /* This urb is terminated, clean up */ | |
d9a38a87 | 522 | dev_dbg(&urb->dev->dev, "%s - urb shutting down: %d\n", |
9c134a14 | 523 | __func__, urb->status); |
0eafe4de D |
524 | break; |
525 | default: | |
d9a38a87 | 526 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", |
9c134a14 | 527 | __func__, urb->status); |
0eafe4de D |
528 | } |
529 | } | |
530 | ||
531 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, | |
532 | __u16 reg) | |
533 | { | |
534 | struct usb_device *dev = mcs->port->serial->dev; | |
05cf0dec | 535 | struct usb_ctrlrequest *dr = mcs->led_dr; |
0eafe4de D |
536 | |
537 | dr->bRequestType = MCS_WR_RTYPE; | |
538 | dr->bRequest = MCS_WRREQ; | |
539 | dr->wValue = cpu_to_le16(wval); | |
540 | dr->wIndex = cpu_to_le16(reg); | |
541 | dr->wLength = cpu_to_le16(0); | |
542 | ||
05cf0dec | 543 | usb_fill_control_urb(mcs->led_urb, dev, usb_sndctrlpipe(dev, 0), |
0eafe4de D |
544 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); |
545 | ||
05cf0dec | 546 | usb_submit_urb(mcs->led_urb, GFP_ATOMIC); |
0eafe4de D |
547 | } |
548 | ||
549 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, | |
550 | __u16 val) | |
551 | { | |
552 | struct usb_device *dev = port->serial->dev; | |
553 | ||
554 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, | |
555 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); | |
556 | } | |
557 | ||
e99e88a9 | 558 | static void mos7840_led_off(struct timer_list *t) |
0eafe4de | 559 | { |
e99e88a9 | 560 | struct moschip_port *mcs = from_timer(mcs, t, led_timer1); |
0eafe4de D |
561 | |
562 | /* Turn off LED */ | |
563 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); | |
564 | mod_timer(&mcs->led_timer2, | |
565 | jiffies + msecs_to_jiffies(LED_OFF_MS)); | |
566 | } | |
567 | ||
e99e88a9 | 568 | static void mos7840_led_flag_off(struct timer_list *t) |
0eafe4de | 569 | { |
e99e88a9 | 570 | struct moschip_port *mcs = from_timer(mcs, t, led_timer2); |
0eafe4de | 571 | |
05cf0dec JH |
572 | clear_bit_unlock(MOS7840_FLAG_LED_BUSY, &mcs->flags); |
573 | } | |
574 | ||
575 | static void mos7840_led_activity(struct usb_serial_port *port) | |
576 | { | |
577 | struct moschip_port *mos7840_port = usb_get_serial_port_data(port); | |
578 | ||
579 | if (test_and_set_bit_lock(MOS7840_FLAG_LED_BUSY, &mos7840_port->flags)) | |
580 | return; | |
581 | ||
582 | mos7840_set_led_async(mos7840_port, 0x0301, MODEM_CONTROL_REGISTER); | |
583 | mod_timer(&mos7840_port->led_timer1, | |
584 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
0eafe4de D |
585 | } |
586 | ||
3f542974 PS |
587 | /***************************************************************************** |
588 | * mos7840_interrupt_callback | |
589 | * this is the callback function for when we have received data on the | |
590 | * interrupt endpoint. | |
591 | *****************************************************************************/ | |
592 | ||
7d12e780 | 593 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
594 | { |
595 | int result; | |
596 | int length; | |
597 | struct moschip_port *mos7840_port; | |
598 | struct usb_serial *serial; | |
599 | __u16 Data; | |
600 | unsigned char *data; | |
601 | __u8 sp[5], st; | |
0de9a702 ON |
602 | int i, rv = 0; |
603 | __u16 wval, wreg = 0; | |
0643c724 | 604 | int status = urb->status; |
3f542974 | 605 | |
0643c724 | 606 | switch (status) { |
3f542974 PS |
607 | case 0: |
608 | /* success */ | |
609 | break; | |
610 | case -ECONNRESET: | |
611 | case -ENOENT: | |
612 | case -ESHUTDOWN: | |
613 | /* this urb is terminated, clean up */ | |
9c134a14 GKH |
614 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
615 | __func__, status); | |
3f542974 PS |
616 | return; |
617 | default: | |
9c134a14 GKH |
618 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
619 | __func__, status); | |
3f542974 PS |
620 | goto exit; |
621 | } | |
622 | ||
623 | length = urb->actual_length; | |
624 | data = urb->transfer_buffer; | |
625 | ||
cdc97792 | 626 | serial = urb->context; |
3f542974 PS |
627 | |
628 | /* Moschip get 5 bytes | |
629 | * Byte 1 IIR Port 1 (port.number is 0) | |
630 | * Byte 2 IIR Port 2 (port.number is 1) | |
631 | * Byte 3 IIR Port 3 (port.number is 2) | |
632 | * Byte 4 IIR Port 4 (port.number is 3) | |
633 | * Byte 5 FIFO status for both */ | |
634 | ||
365a0442 | 635 | if (length > 5) { |
9c134a14 | 636 | dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); |
3f542974 PS |
637 | return; |
638 | } | |
639 | ||
640 | sp[0] = (__u8) data[0]; | |
641 | sp[1] = (__u8) data[1]; | |
642 | sp[2] = (__u8) data[2]; | |
643 | sp[3] = (__u8) data[3]; | |
644 | st = (__u8) data[4]; | |
645 | ||
646 | for (i = 0; i < serial->num_ports; i++) { | |
647 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
1143832e | 648 | wval = ((__u16)serial->port[i]->port_number + 1) << 8; |
3f542974 PS |
649 | if (mos7840_port->open) { |
650 | if (sp[i] & 0x01) { | |
9c134a14 | 651 | dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); |
3f542974 PS |
652 | } else { |
653 | switch (sp[i] & 0x0f) { | |
654 | case SERIAL_IIR_RLS: | |
9c134a14 GKH |
655 | dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); |
656 | dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); | |
3f542974 | 657 | mos7840_port->MsrLsr = 1; |
0de9a702 | 658 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
659 | break; |
660 | case SERIAL_IIR_MS: | |
9c134a14 | 661 | dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); |
3f542974 | 662 | mos7840_port->MsrLsr = 0; |
0de9a702 | 663 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
664 | break; |
665 | } | |
e681b66f | 666 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); |
3f542974 PS |
667 | } |
668 | } | |
669 | } | |
880af9db AC |
670 | if (!(rv < 0)) |
671 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
672 | return; |
673 | exit: | |
3f542974 PS |
674 | result = usb_submit_urb(urb, GFP_ATOMIC); |
675 | if (result) { | |
676 | dev_err(&urb->dev->dev, | |
677 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 678 | __func__, result); |
3f542974 | 679 | } |
3f542974 PS |
680 | } |
681 | ||
682 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
683 | const char *function) | |
684 | { | |
685 | if (!port) { | |
9c134a14 | 686 | pr_debug("%s - port == NULL\n", function); |
3f542974 PS |
687 | return -1; |
688 | } | |
689 | if (!port->serial) { | |
9c134a14 | 690 | pr_debug("%s - port->serial == NULL\n", function); |
3f542974 PS |
691 | return -1; |
692 | } | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
697 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
698 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
699 | const char *function) | |
700 | { | |
701 | if (!serial) { | |
9c134a14 | 702 | pr_debug("%s - serial == NULL\n", function); |
3f542974 PS |
703 | return -1; |
704 | } | |
705 | if (!serial->type) { | |
9c134a14 | 706 | pr_debug("%s - serial->type == NULL!\n", function); |
3f542974 PS |
707 | return -1; |
708 | } | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
714 | const char *function) | |
715 | { | |
716 | /* if no port was specified, or it fails a paranoia check */ | |
717 | if (!port || | |
718 | mos7840_port_paranoia_check(port, function) || | |
719 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
720 | /* then say that we don't have a valid usb_serial thing, |
721 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
722 | return NULL; |
723 | } | |
724 | ||
725 | return port->serial; | |
726 | } | |
727 | ||
728 | /***************************************************************************** | |
729 | * mos7840_bulk_in_callback | |
730 | * this is the callback function for when we have received data on the | |
731 | * bulk in endpoint. | |
732 | *****************************************************************************/ | |
733 | ||
7d12e780 | 734 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 735 | { |
0643c724 | 736 | int retval; |
3f542974 PS |
737 | unsigned char *data; |
738 | struct usb_serial *serial; | |
739 | struct usb_serial_port *port; | |
740 | struct moschip_port *mos7840_port; | |
0643c724 | 741 | int status = urb->status; |
3f542974 | 742 | |
cdc97792 | 743 | mos7840_port = urb->context; |
9c134a14 | 744 | if (!mos7840_port) |
50de36f7 | 745 | return; |
50de36f7 GKH |
746 | |
747 | if (status) { | |
9c134a14 | 748 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
50de36f7 | 749 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
750 | return; |
751 | } | |
752 | ||
9c134a14 | 753 | port = mos7840_port->port; |
441b62c1 | 754 | if (mos7840_port_paranoia_check(port, __func__)) { |
50de36f7 | 755 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
756 | return; |
757 | } | |
758 | ||
441b62c1 | 759 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 760 | if (!serial) { |
50de36f7 | 761 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
762 | return; |
763 | } | |
764 | ||
3f542974 | 765 | data = urb->transfer_buffer; |
59d33f2f | 766 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
3f542974 | 767 | |
3f542974 | 768 | if (urb->actual_length) { |
05c7cd39 | 769 | struct tty_port *tport = &mos7840_port->port->port; |
2e124b4a JS |
770 | tty_insert_flip_string(tport, data, urb->actual_length); |
771 | tty_flip_buffer_push(tport); | |
8c1a07ff JH |
772 | port->icount.rx += urb->actual_length; |
773 | dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); | |
3f542974 PS |
774 | } |
775 | ||
776 | if (!mos7840_port->read_urb) { | |
9c134a14 | 777 | dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); |
50de36f7 | 778 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
779 | return; |
780 | } | |
781 | ||
05cf0dec JH |
782 | if (mos7840_port->has_led) |
783 | mos7840_led_activity(port); | |
3f542974 | 784 | |
50de36f7 | 785 | mos7840_port->read_urb_busy = true; |
0643c724 | 786 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 787 | |
0643c724 | 788 | if (retval) { |
9c134a14 | 789 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
50de36f7 | 790 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
791 | } |
792 | } | |
793 | ||
794 | /***************************************************************************** | |
795 | * mos7840_bulk_out_data_callback | |
880af9db AC |
796 | * this is the callback function for when we have finished sending |
797 | * serial data on the bulk out endpoint. | |
3f542974 PS |
798 | *****************************************************************************/ |
799 | ||
7d12e780 | 800 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
801 | { |
802 | struct moschip_port *mos7840_port; | |
9c134a14 | 803 | struct usb_serial_port *port; |
0643c724 | 804 | int status = urb->status; |
0de9a702 ON |
805 | int i; |
806 | ||
cdc97792 | 807 | mos7840_port = urb->context; |
9c134a14 | 808 | port = mos7840_port->port; |
0de9a702 ON |
809 | spin_lock(&mos7840_port->pool_lock); |
810 | for (i = 0; i < NUM_URBS; i++) { | |
811 | if (urb == mos7840_port->write_urb_pool[i]) { | |
812 | mos7840_port->busy[i] = 0; | |
813 | break; | |
814 | } | |
815 | } | |
816 | spin_unlock(&mos7840_port->pool_lock); | |
817 | ||
0643c724 | 818 | if (status) { |
9c134a14 | 819 | dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
3f542974 PS |
820 | return; |
821 | } | |
822 | ||
9c134a14 | 823 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 824 | return; |
3f542974 | 825 | |
6aad04f2 JS |
826 | if (mos7840_port->open) |
827 | tty_port_tty_wakeup(&port->port); | |
3f542974 PS |
828 | |
829 | } | |
830 | ||
831 | /************************************************************************/ | |
832 | /* 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 */ | |
833 | /************************************************************************/ | |
3f542974 PS |
834 | |
835 | /***************************************************************************** | |
836 | * mos7840_open | |
837 | * this function is called by the tty driver when a port is opened | |
838 | * If successful, we return 0 | |
839 | * Otherwise we return a negative error number. | |
840 | *****************************************************************************/ | |
841 | ||
a509a7e4 | 842 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
843 | { |
844 | int response; | |
845 | int j; | |
846 | struct usb_serial *serial; | |
847 | struct urb *urb; | |
848 | __u16 Data; | |
849 | int status; | |
850 | struct moschip_port *mos7840_port; | |
0de9a702 | 851 | struct moschip_port *port0; |
3f542974 | 852 | |
9c134a14 | 853 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 854 | return -ENODEV; |
3f542974 | 855 | |
3f542974 PS |
856 | serial = port->serial; |
857 | ||
9c134a14 | 858 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 859 | return -ENODEV; |
3f542974 PS |
860 | |
861 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 862 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 863 | |
0de9a702 | 864 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
865 | return -ENODEV; |
866 | ||
867 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
868 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 869 | port0->open_ports++; |
3f542974 PS |
870 | |
871 | /* Initialising the write urb pool */ | |
872 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 873 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 874 | mos7840_port->write_urb_pool[j] = urb; |
10c642d0 | 875 | if (!urb) |
3f542974 | 876 | continue; |
3f542974 | 877 | |
880af9db AC |
878 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
879 | GFP_KERNEL); | |
3f542974 | 880 | if (!urb->transfer_buffer) { |
0de9a702 ON |
881 | usb_free_urb(urb); |
882 | mos7840_port->write_urb_pool[j] = NULL; | |
3f542974 PS |
883 | continue; |
884 | } | |
885 | } | |
886 | ||
887 | /***************************************************************************** | |
888 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
889 | * | |
890 | * Register Index | |
891 | * 1 : IER | |
892 | * 2 : FCR | |
893 | * 3 : LCR | |
894 | * 4 : MCR | |
895 | * | |
896 | * 0x08 : SP1/2 Control Reg | |
897 | *****************************************************************************/ | |
898 | ||
880af9db | 899 | /* NEED to check the following Block */ |
3f542974 | 900 | |
3f542974 PS |
901 | Data = 0x0; |
902 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
903 | if (status < 0) { | |
9c134a14 | 904 | dev_dbg(&port->dev, "Reading Spreg failed\n"); |
5f8a2e68 | 905 | goto err; |
3f542974 PS |
906 | } |
907 | Data |= 0x80; | |
908 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
909 | if (status < 0) { | |
9c134a14 | 910 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
5f8a2e68 | 911 | goto err; |
3f542974 PS |
912 | } |
913 | ||
914 | Data &= ~0x80; | |
915 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
916 | if (status < 0) { | |
9c134a14 | 917 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
5f8a2e68 | 918 | goto err; |
3f542974 | 919 | } |
880af9db | 920 | /* End of block to be checked */ |
3f542974 | 921 | |
3f542974 | 922 | Data = 0x0; |
880af9db AC |
923 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
924 | &Data); | |
3f542974 | 925 | if (status < 0) { |
9c134a14 | 926 | dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
5f8a2e68 | 927 | goto err; |
3f542974 | 928 | } |
880af9db AC |
929 | Data |= 0x08; /* Driver done bit */ |
930 | Data |= 0x20; /* rx_disable */ | |
931 | status = mos7840_set_reg_sync(port, | |
932 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 933 | if (status < 0) { |
9c134a14 | 934 | dev_dbg(&port->dev, "writing Controlreg failed\n"); |
5f8a2e68 | 935 | goto err; |
3f542974 | 936 | } |
880af9db AC |
937 | /* do register settings here */ |
938 | /* Set all regs to the device default values. */ | |
939 | /*********************************** | |
940 | * First Disable all interrupts. | |
941 | ***********************************/ | |
3f542974 | 942 | Data = 0x00; |
3f542974 PS |
943 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
944 | if (status < 0) { | |
9c134a14 | 945 | dev_dbg(&port->dev, "disabling interrupts failed\n"); |
5f8a2e68 | 946 | goto err; |
3f542974 | 947 | } |
880af9db | 948 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 949 | Data = 0x00; |
3f542974 PS |
950 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
951 | if (status < 0) { | |
9c134a14 | 952 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
5f8a2e68 | 953 | goto err; |
3f542974 PS |
954 | } |
955 | ||
956 | Data = 0xcf; | |
3f542974 PS |
957 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
958 | if (status < 0) { | |
9c134a14 | 959 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
5f8a2e68 | 960 | goto err; |
3f542974 PS |
961 | } |
962 | ||
963 | Data = 0x03; | |
3f542974 PS |
964 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
965 | mos7840_port->shadowLCR = Data; | |
966 | ||
967 | Data = 0x0b; | |
3f542974 PS |
968 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
969 | mos7840_port->shadowMCR = Data; | |
970 | ||
971 | Data = 0x00; | |
3f542974 PS |
972 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
973 | mos7840_port->shadowLCR = Data; | |
974 | ||
880af9db | 975 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
976 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
977 | ||
978 | Data = 0x0c; | |
3f542974 PS |
979 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
980 | ||
981 | Data = 0x0; | |
3f542974 PS |
982 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
983 | ||
984 | Data = 0x00; | |
3f542974 PS |
985 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
986 | ||
987 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
988 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
989 | mos7840_port->shadowLCR = Data; | |
990 | ||
880af9db | 991 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 992 | Data = 0x0; |
3f542974 PS |
993 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
994 | ||
995 | Data = Data | 0x0c; | |
3f542974 PS |
996 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
997 | ||
998 | Data = Data & ~0x0c; | |
3f542974 | 999 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1000 | /* Finally enable all interrupts */ |
3f542974 | 1001 | Data = 0x0c; |
3f542974 PS |
1002 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1003 | ||
880af9db | 1004 | /* clearing rx_disable */ |
3f542974 | 1005 | Data = 0x0; |
880af9db AC |
1006 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1007 | &Data); | |
3f542974 | 1008 | Data = Data & ~0x20; |
880af9db AC |
1009 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1010 | Data); | |
3f542974 | 1011 | |
880af9db | 1012 | /* rx_negate */ |
3f542974 | 1013 | Data = 0x0; |
880af9db AC |
1014 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1015 | &Data); | |
3f542974 | 1016 | Data = Data | 0x10; |
880af9db AC |
1017 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1018 | Data); | |
3f542974 | 1019 | |
880af9db AC |
1020 | /* Check to see if we've set up our endpoint info yet * |
1021 | * (can't set it up in mos7840_startup as the structures * | |
1022 | * were not set up at that time.) */ | |
0de9a702 | 1023 | if (port0->open_ports == 1) { |
5182c2cf | 1024 | /* FIXME: Buffer never NULL, so URB is not submitted. */ |
3f542974 | 1025 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1026 | /* set up interrupt urb */ |
3f542974 | 1027 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1028 | serial->dev, |
1029 | usb_rcvintpipe(serial->dev, | |
1030 | serial->port[0]->interrupt_in_endpointAddress), | |
1031 | serial->port[0]->interrupt_in_buffer, | |
1032 | serial->port[0]->interrupt_in_urb-> | |
1033 | transfer_buffer_length, | |
1034 | mos7840_interrupt_callback, | |
1035 | serial, | |
1036 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 | 1037 | |
472d7e55 | 1038 | /* start interrupt read for mos7840 */ |
3f542974 PS |
1039 | response = |
1040 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1041 | GFP_KERNEL); | |
1042 | if (response) { | |
194343d9 GKH |
1043 | dev_err(&port->dev, "%s - Error %d submitting " |
1044 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1045 | } |
1046 | ||
1047 | } | |
1048 | ||
1049 | } | |
1050 | ||
1051 | /* see if we've set up our endpoint info yet * | |
1052 | * (can't set it up in mos7840_startup as the * | |
1053 | * structures were not set up at that time.) */ | |
1054 | ||
1143832e | 1055 | dev_dbg(&port->dev, "port number is %d\n", port->port_number); |
e5b1e206 | 1056 | dev_dbg(&port->dev, "minor number is %d\n", port->minor); |
9c134a14 GKH |
1057 | dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); |
1058 | dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); | |
1059 | dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); | |
1060 | dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); | |
3f542974 PS |
1061 | mos7840_port->read_urb = port->read_urb; |
1062 | ||
1063 | /* set up our bulk in urb */ | |
1143832e | 1064 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1065 | usb_fill_bulk_urb(mos7840_port->read_urb, |
1066 | serial->dev, | |
1067 | usb_rcvbulkpipe(serial->dev, | |
1068 | (port->bulk_in_endpointAddress) + 2), | |
1069 | port->bulk_in_buffer, | |
1070 | mos7840_port->read_urb->transfer_buffer_length, | |
1071 | mos7840_bulk_in_callback, mos7840_port); | |
1072 | } else { | |
1073 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1074 | serial->dev, | |
1075 | usb_rcvbulkpipe(serial->dev, | |
1076 | port->bulk_in_endpointAddress), | |
1077 | port->bulk_in_buffer, | |
1078 | mos7840_port->read_urb->transfer_buffer_length, | |
1079 | mos7840_bulk_in_callback, mos7840_port); | |
1080 | } | |
3f542974 | 1081 | |
9c134a14 | 1082 | dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
50de36f7 | 1083 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1084 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1085 | if (response) { | |
194343d9 GKH |
1086 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1087 | __func__, response); | |
50de36f7 | 1088 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1089 | } |
1090 | ||
3f542974 | 1091 | /* initialize our port settings */ |
880af9db AC |
1092 | /* Must set to enable ints! */ |
1093 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1094 | /* send a open port command */ |
1095 | mos7840_port->open = 1; | |
880af9db | 1096 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 | 1097 | |
3f542974 | 1098 | return 0; |
5f8a2e68 JH |
1099 | err: |
1100 | for (j = 0; j < NUM_URBS; ++j) { | |
1101 | urb = mos7840_port->write_urb_pool[j]; | |
1102 | if (!urb) | |
1103 | continue; | |
1104 | kfree(urb->transfer_buffer); | |
1105 | usb_free_urb(urb); | |
1106 | } | |
1107 | return status; | |
3f542974 PS |
1108 | } |
1109 | ||
1110 | /***************************************************************************** | |
1111 | * mos7840_chars_in_buffer | |
1112 | * this function is called by the tty driver when it wants to know how many | |
1113 | * bytes of data we currently have outstanding in the port (data that has | |
1114 | * been written, but hasn't made it out the port yet) | |
1115 | * If successful, we return the number of bytes left to be written in the | |
1116 | * system, | |
95da310e | 1117 | * Otherwise we return zero. |
3f542974 PS |
1118 | *****************************************************************************/ |
1119 | ||
95da310e | 1120 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1121 | { |
95da310e | 1122 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1123 | int i; |
1124 | int chars = 0; | |
0de9a702 | 1125 | unsigned long flags; |
3f542974 PS |
1126 | struct moschip_port *mos7840_port; |
1127 | ||
9c134a14 | 1128 | if (mos7840_port_paranoia_check(port, __func__)) |
95da310e | 1129 | return 0; |
3f542974 PS |
1130 | |
1131 | mos7840_port = mos7840_get_port_private(port); | |
3363155b | 1132 | if (mos7840_port == NULL) |
95da310e | 1133 | return 0; |
3f542974 | 1134 | |
880af9db | 1135 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
5c263b92 MF |
1136 | for (i = 0; i < NUM_URBS; ++i) { |
1137 | if (mos7840_port->busy[i]) { | |
1138 | struct urb *urb = mos7840_port->write_urb_pool[i]; | |
1139 | chars += urb->transfer_buffer_length; | |
1140 | } | |
1141 | } | |
880af9db | 1142 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
9c134a14 | 1143 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
0de9a702 | 1144 | return chars; |
3f542974 PS |
1145 | |
1146 | } | |
1147 | ||
3f542974 PS |
1148 | /***************************************************************************** |
1149 | * mos7840_close | |
1150 | * this function is called by the tty driver when a port is closed | |
1151 | *****************************************************************************/ | |
1152 | ||
335f8514 | 1153 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1154 | { |
1155 | struct usb_serial *serial; | |
1156 | struct moschip_port *mos7840_port; | |
0de9a702 | 1157 | struct moschip_port *port0; |
3f542974 PS |
1158 | int j; |
1159 | __u16 Data; | |
1160 | ||
9c134a14 | 1161 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1162 | return; |
3f542974 | 1163 | |
441b62c1 | 1164 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1165 | if (!serial) |
3f542974 | 1166 | return; |
3f542974 PS |
1167 | |
1168 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1169 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1170 | |
0de9a702 | 1171 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1172 | return; |
3f542974 PS |
1173 | |
1174 | for (j = 0; j < NUM_URBS; ++j) | |
1175 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1176 | ||
1177 | /* Freeing Write URBs */ | |
1178 | for (j = 0; j < NUM_URBS; ++j) { | |
1179 | if (mos7840_port->write_urb_pool[j]) { | |
91c72df1 | 1180 | kfree(mos7840_port->write_urb_pool[j]->transfer_buffer); |
3f542974 PS |
1181 | usb_free_urb(mos7840_port->write_urb_pool[j]); |
1182 | } | |
1183 | } | |
1184 | ||
bb3529c6 JH |
1185 | usb_kill_urb(mos7840_port->read_urb); |
1186 | mos7840_port->read_urb_busy = false; | |
1187 | ||
0de9a702 | 1188 | port0->open_ports--; |
1143832e | 1189 | dev_dbg(&port->dev, "%s in close%d\n", __func__, port0->open_ports); |
0de9a702 | 1190 | if (port0->open_ports == 0) { |
3f542974 | 1191 | if (serial->port[0]->interrupt_in_urb) { |
9c134a14 | 1192 | dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); |
0de9a702 | 1193 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1194 | } |
1195 | } | |
1196 | ||
3f542974 PS |
1197 | Data = 0x0; |
1198 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1199 | ||
1200 | Data = 0x00; | |
1201 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1202 | ||
1203 | mos7840_port->open = 0; | |
3f542974 PS |
1204 | } |
1205 | ||
3f542974 PS |
1206 | /***************************************************************************** |
1207 | * mos7840_break | |
1208 | * this function sends a break to the port | |
1209 | *****************************************************************************/ | |
95da310e | 1210 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1211 | { |
95da310e | 1212 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1213 | unsigned char data; |
1214 | struct usb_serial *serial; | |
1215 | struct moschip_port *mos7840_port; | |
1216 | ||
9c134a14 | 1217 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1218 | return; |
3f542974 | 1219 | |
441b62c1 | 1220 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1221 | if (!serial) |
3f542974 | 1222 | return; |
3f542974 PS |
1223 | |
1224 | mos7840_port = mos7840_get_port_private(port); | |
1225 | ||
880af9db | 1226 | if (mos7840_port == NULL) |
3f542974 | 1227 | return; |
3f542974 | 1228 | |
95da310e | 1229 | if (break_state == -1) |
3f542974 | 1230 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1231 | else |
3f542974 | 1232 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1233 | |
6b447f04 | 1234 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1235 | mos7840_port->shadowLCR = data; |
9c134a14 | 1236 | dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1237 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
1238 | mos7840_port->shadowLCR); | |
3f542974 PS |
1239 | } |
1240 | ||
1241 | /***************************************************************************** | |
1242 | * mos7840_write_room | |
1243 | * this function is called by the tty driver when it wants to know how many | |
1244 | * bytes of data we can accept for a specific port. | |
1245 | * If successful, we return the amount of room that we have for this port | |
1246 | * Otherwise we return a negative error number. | |
1247 | *****************************************************************************/ | |
1248 | ||
95da310e | 1249 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1250 | { |
95da310e | 1251 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1252 | int i; |
1253 | int room = 0; | |
0de9a702 | 1254 | unsigned long flags; |
3f542974 PS |
1255 | struct moschip_port *mos7840_port; |
1256 | ||
9c134a14 | 1257 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1258 | return -1; |
3f542974 PS |
1259 | |
1260 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1261 | if (mos7840_port == NULL) |
3f542974 | 1262 | return -1; |
3f542974 | 1263 | |
0de9a702 | 1264 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1265 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1266 | if (!mos7840_port->busy[i]) |
3f542974 | 1267 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1268 | } |
0de9a702 | 1269 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1270 | |
0de9a702 | 1271 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
9c134a14 | 1272 | dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
0de9a702 | 1273 | return room; |
3f542974 PS |
1274 | |
1275 | } | |
1276 | ||
1277 | /***************************************************************************** | |
1278 | * mos7840_write | |
1279 | * this function is called by the tty driver when data should be written to | |
1280 | * the port. | |
1281 | * If successful, we return the number of bytes written, otherwise we | |
1282 | * return a negative error number. | |
1283 | *****************************************************************************/ | |
1284 | ||
95da310e | 1285 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1286 | const unsigned char *data, int count) |
1287 | { | |
1288 | int status; | |
1289 | int i; | |
1290 | int bytes_sent = 0; | |
1291 | int transfer_size; | |
0de9a702 | 1292 | unsigned long flags; |
3f542974 PS |
1293 | |
1294 | struct moschip_port *mos7840_port; | |
1295 | struct usb_serial *serial; | |
1296 | struct urb *urb; | |
880af9db | 1297 | /* __u16 Data; */ |
3f542974 PS |
1298 | const unsigned char *current_position = data; |
1299 | unsigned char *data1; | |
3f542974 | 1300 | |
9c134a14 | 1301 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1302 | return -1; |
3f542974 PS |
1303 | |
1304 | serial = port->serial; | |
9c134a14 | 1305 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1306 | return -1; |
3f542974 PS |
1307 | |
1308 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1309 | if (mos7840_port == NULL) |
3f542974 | 1310 | return -1; |
3f542974 PS |
1311 | |
1312 | /* try to find a free urb in the list */ | |
1313 | urb = NULL; | |
1314 | ||
0de9a702 | 1315 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1316 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1317 | if (!mos7840_port->busy[i]) { |
1318 | mos7840_port->busy[i] = 1; | |
3f542974 | 1319 | urb = mos7840_port->write_urb_pool[i]; |
9c134a14 | 1320 | dev_dbg(&port->dev, "URB:%d\n", i); |
3f542974 PS |
1321 | break; |
1322 | } | |
1323 | } | |
0de9a702 | 1324 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1325 | |
1326 | if (urb == NULL) { | |
9c134a14 | 1327 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
3f542974 PS |
1328 | goto exit; |
1329 | } | |
1330 | ||
1331 | if (urb->transfer_buffer == NULL) { | |
3b7c7e52 AK |
1332 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
1333 | GFP_ATOMIC); | |
10c642d0 | 1334 | if (!urb->transfer_buffer) |
3f542974 | 1335 | goto exit; |
3f542974 PS |
1336 | } |
1337 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1338 | ||
97c4965d | 1339 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1340 | |
1341 | /* fill urb with data and submit */ | |
1143832e | 1342 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1343 | usb_fill_bulk_urb(urb, |
1344 | serial->dev, | |
1345 | usb_sndbulkpipe(serial->dev, | |
1346 | (port->bulk_out_endpointAddress) + 2), | |
1347 | urb->transfer_buffer, | |
1348 | transfer_size, | |
1349 | mos7840_bulk_out_data_callback, mos7840_port); | |
1350 | } else { | |
1351 | usb_fill_bulk_urb(urb, | |
1352 | serial->dev, | |
1353 | usb_sndbulkpipe(serial->dev, | |
1354 | port->bulk_out_endpointAddress), | |
1355 | urb->transfer_buffer, | |
1356 | transfer_size, | |
1357 | mos7840_bulk_out_data_callback, mos7840_port); | |
1358 | } | |
3f542974 PS |
1359 | |
1360 | data1 = urb->transfer_buffer; | |
9c134a14 | 1361 | dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
3f542974 | 1362 | |
05cf0dec JH |
1363 | if (mos7840_port->has_led) |
1364 | mos7840_led_activity(port); | |
0eafe4de | 1365 | |
3f542974 PS |
1366 | /* send it down the pipe */ |
1367 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1368 | ||
1369 | if (status) { | |
0de9a702 | 1370 | mos7840_port->busy[i] = 0; |
22a416c4 | 1371 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1372 | "with status = %d\n", __func__, status); |
3f542974 PS |
1373 | bytes_sent = status; |
1374 | goto exit; | |
1375 | } | |
1376 | bytes_sent = transfer_size; | |
8c1a07ff JH |
1377 | port->icount.tx += transfer_size; |
1378 | dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); | |
95da310e | 1379 | exit: |
3f542974 PS |
1380 | return bytes_sent; |
1381 | ||
1382 | } | |
1383 | ||
1384 | /***************************************************************************** | |
1385 | * mos7840_throttle | |
1386 | * this function is called by the tty driver when it wants to stop the data | |
1387 | * being read from the port. | |
1388 | *****************************************************************************/ | |
1389 | ||
95da310e | 1390 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1391 | { |
95da310e | 1392 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1393 | struct moschip_port *mos7840_port; |
3f542974 PS |
1394 | int status; |
1395 | ||
9c134a14 | 1396 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1397 | return; |
3f542974 PS |
1398 | |
1399 | mos7840_port = mos7840_get_port_private(port); | |
1400 | ||
1401 | if (mos7840_port == NULL) | |
1402 | return; | |
1403 | ||
1404 | if (!mos7840_port->open) { | |
9c134a14 | 1405 | dev_dbg(&port->dev, "%s", "port not opened\n"); |
3f542974 PS |
1406 | return; |
1407 | } | |
1408 | ||
3f542974 PS |
1409 | /* if we are implementing XON/XOFF, send the stop character */ |
1410 | if (I_IXOFF(tty)) { | |
1411 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1412 | status = mos7840_write(tty, port, &stop_char, 1); |
1413 | if (status <= 0) | |
3f542974 | 1414 | return; |
3f542974 | 1415 | } |
3f542974 | 1416 | /* if we are implementing RTS/CTS, toggle that line */ |
9db276f8 | 1417 | if (C_CRTSCTS(tty)) { |
3f542974 | 1418 | mos7840_port->shadowMCR &= ~MCR_RTS; |
95da310e | 1419 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1420 | mos7840_port->shadowMCR); |
95da310e | 1421 | if (status < 0) |
3f542974 | 1422 | return; |
3f542974 | 1423 | } |
3f542974 PS |
1424 | } |
1425 | ||
1426 | /***************************************************************************** | |
1427 | * mos7840_unthrottle | |
880af9db AC |
1428 | * this function is called by the tty driver when it wants to resume |
1429 | * the data being read from the port (called after mos7840_throttle is | |
1430 | * called) | |
3f542974 | 1431 | *****************************************************************************/ |
95da310e | 1432 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1433 | { |
95da310e | 1434 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1435 | int status; |
1436 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1437 | ||
9c134a14 | 1438 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1439 | return; |
3f542974 PS |
1440 | |
1441 | if (mos7840_port == NULL) | |
1442 | return; | |
1443 | ||
1444 | if (!mos7840_port->open) { | |
9c134a14 | 1445 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1446 | return; |
1447 | } | |
1448 | ||
3f542974 PS |
1449 | /* if we are implementing XON/XOFF, send the start character */ |
1450 | if (I_IXOFF(tty)) { | |
1451 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1452 | status = mos7840_write(tty, port, &start_char, 1); |
1453 | if (status <= 0) | |
3f542974 | 1454 | return; |
3f542974 PS |
1455 | } |
1456 | ||
1457 | /* if we are implementing RTS/CTS, toggle that line */ | |
9db276f8 | 1458 | if (C_CRTSCTS(tty)) { |
3f542974 | 1459 | mos7840_port->shadowMCR |= MCR_RTS; |
95da310e | 1460 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1461 | mos7840_port->shadowMCR); |
95da310e | 1462 | if (status < 0) |
3f542974 | 1463 | return; |
3f542974 | 1464 | } |
3f542974 PS |
1465 | } |
1466 | ||
60b33c13 | 1467 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1468 | { |
95da310e | 1469 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1470 | struct moschip_port *mos7840_port; |
1471 | unsigned int result; | |
1472 | __u16 msr; | |
1473 | __u16 mcr; | |
880af9db | 1474 | int status; |
3f542974 PS |
1475 | mos7840_port = mos7840_get_port_private(port); |
1476 | ||
3f542974 PS |
1477 | if (mos7840_port == NULL) |
1478 | return -ENODEV; | |
1479 | ||
1480 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
cd8db057 | 1481 | if (status < 0) |
a91ccd26 | 1482 | return -EIO; |
3f542974 | 1483 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); |
cd8db057 | 1484 | if (status < 0) |
a91ccd26 | 1485 | return -EIO; |
3f542974 PS |
1486 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) |
1487 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1488 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1489 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1490 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1491 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1492 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1493 | ||
9c134a14 | 1494 | dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
3f542974 PS |
1495 | |
1496 | return result; | |
1497 | } | |
1498 | ||
20b9d177 | 1499 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1500 | unsigned int set, unsigned int clear) |
1501 | { | |
95da310e | 1502 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1503 | struct moschip_port *mos7840_port; |
1504 | unsigned int mcr; | |
87521c46 | 1505 | int status; |
3f542974 | 1506 | |
3f542974 PS |
1507 | mos7840_port = mos7840_get_port_private(port); |
1508 | ||
1509 | if (mos7840_port == NULL) | |
1510 | return -ENODEV; | |
1511 | ||
e2984494 | 1512 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1513 | mcr = mos7840_port->shadowMCR; |
1514 | if (clear & TIOCM_RTS) | |
1515 | mcr &= ~MCR_RTS; | |
1516 | if (clear & TIOCM_DTR) | |
1517 | mcr &= ~MCR_DTR; | |
1518 | if (clear & TIOCM_LOOP) | |
1519 | mcr &= ~MCR_LOOPBACK; | |
1520 | ||
1521 | if (set & TIOCM_RTS) | |
1522 | mcr |= MCR_RTS; | |
1523 | if (set & TIOCM_DTR) | |
1524 | mcr |= MCR_DTR; | |
1525 | if (set & TIOCM_LOOP) | |
1526 | mcr |= MCR_LOOPBACK; | |
1527 | ||
1528 | mos7840_port->shadowMCR = mcr; | |
1529 | ||
3f542974 PS |
1530 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1531 | if (status < 0) { | |
9c134a14 | 1532 | dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
87521c46 | 1533 | return status; |
3f542974 PS |
1534 | } |
1535 | ||
1536 | return 0; | |
1537 | } | |
1538 | ||
1539 | /***************************************************************************** | |
1540 | * mos7840_calc_baud_rate_divisor | |
1541 | * this function calculates the proper baud rate divisor for the specified | |
1542 | * baud rate. | |
1543 | *****************************************************************************/ | |
9c134a14 GKH |
1544 | static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
1545 | int baudRate, int *divisor, | |
880af9db | 1546 | __u16 *clk_sel_val) |
3f542974 | 1547 | { |
9c134a14 | 1548 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
3f542974 PS |
1549 | |
1550 | if (baudRate <= 115200) { | |
1551 | *divisor = 115200 / baudRate; | |
1552 | *clk_sel_val = 0x0; | |
1553 | } | |
1554 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1555 | *divisor = 230400 / baudRate; | |
1556 | *clk_sel_val = 0x10; | |
1557 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1558 | *divisor = 403200 / baudRate; | |
1559 | *clk_sel_val = 0x20; | |
1560 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1561 | *divisor = 460800 / baudRate; | |
1562 | *clk_sel_val = 0x30; | |
1563 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1564 | *divisor = 806400 / baudRate; | |
1565 | *clk_sel_val = 0x40; | |
1566 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1567 | *divisor = 921600 / baudRate; | |
1568 | *clk_sel_val = 0x50; | |
1569 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1570 | *divisor = 1572864 / baudRate; | |
1571 | *clk_sel_val = 0x60; | |
1572 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1573 | *divisor = 3145728 / baudRate; | |
1574 | *clk_sel_val = 0x70; | |
1575 | } | |
1576 | return 0; | |
3f542974 PS |
1577 | } |
1578 | ||
1579 | /***************************************************************************** | |
1580 | * mos7840_send_cmd_write_baud_rate | |
1581 | * this function sends the proper command to change the baud rate of the | |
1582 | * specified port. | |
1583 | *****************************************************************************/ | |
1584 | ||
1585 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1586 | int baudRate) | |
1587 | { | |
1588 | int divisor = 0; | |
1589 | int status; | |
1590 | __u16 Data; | |
1591 | unsigned char number; | |
1592 | __u16 clk_sel_val; | |
1593 | struct usb_serial_port *port; | |
1594 | ||
1595 | if (mos7840_port == NULL) | |
1596 | return -1; | |
1597 | ||
9c134a14 GKH |
1598 | port = mos7840_port->port; |
1599 | if (mos7840_port_paranoia_check(port, __func__)) | |
3f542974 | 1600 | return -1; |
3f542974 | 1601 | |
9c134a14 | 1602 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1603 | return -1; |
3f542974 | 1604 | |
1143832e | 1605 | number = mos7840_port->port->port_number; |
3f542974 | 1606 | |
1143832e | 1607 | dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); |
880af9db | 1608 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1609 | if (baudRate > 115200) { |
1610 | #ifdef HW_flow_control | |
880af9db AC |
1611 | /* NOTE: need to see the pther register to modify */ |
1612 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1613 | Data = 0x2b; |
1614 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1615 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1616 | Data); | |
3f542974 | 1617 | if (status < 0) { |
9c134a14 | 1618 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1619 | return -1; |
1620 | } | |
1621 | #endif | |
1622 | ||
1623 | } else { | |
1624 | #ifdef HW_flow_control | |
093ea2d3 | 1625 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1626 | Data = 0xb; |
1627 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1628 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1629 | Data); | |
3f542974 | 1630 | if (status < 0) { |
9c134a14 | 1631 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1632 | return -1; |
1633 | } | |
1634 | #endif | |
1635 | ||
1636 | } | |
1637 | ||
880af9db | 1638 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1639 | clk_sel_val = 0x0; |
1640 | Data = 0x0; | |
9c134a14 | 1641 | status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
3f542974 | 1642 | &clk_sel_val); |
880af9db AC |
1643 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1644 | &Data); | |
3f542974 | 1645 | if (status < 0) { |
9c134a14 | 1646 | dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
3f542974 PS |
1647 | return -1; |
1648 | } | |
1649 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1650 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1651 | Data); | |
3f542974 | 1652 | if (status < 0) { |
9c134a14 | 1653 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1654 | return -1; |
1655 | } | |
1656 | /* Calculate the Divisor */ | |
1657 | ||
1658 | if (status) { | |
194343d9 | 1659 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1660 | return status; |
1661 | } | |
1662 | /* Enable access to divisor latch */ | |
1663 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1664 | mos7840_port->shadowLCR = Data; | |
1665 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1666 | ||
1667 | /* Write the divisor */ | |
1668 | Data = (unsigned char)(divisor & 0xff); | |
9c134a14 | 1669 | dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
3f542974 PS |
1670 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1671 | ||
1672 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
9c134a14 | 1673 | dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
3f542974 PS |
1674 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1675 | ||
1676 | /* Disable access to divisor latch */ | |
1677 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1678 | mos7840_port->shadowLCR = Data; | |
1679 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1680 | ||
1681 | } | |
3f542974 PS |
1682 | return status; |
1683 | } | |
1684 | ||
1685 | /***************************************************************************** | |
1686 | * mos7840_change_port_settings | |
1687 | * This routine is called to set the UART on the device to match | |
1688 | * the specified new settings. | |
1689 | *****************************************************************************/ | |
1690 | ||
95da310e AC |
1691 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1692 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1693 | { |
3f542974 PS |
1694 | int baud; |
1695 | unsigned cflag; | |
1696 | unsigned iflag; | |
1697 | __u8 lData; | |
1698 | __u8 lParity; | |
1699 | __u8 lStop; | |
1700 | int status; | |
1701 | __u16 Data; | |
1702 | struct usb_serial_port *port; | |
1703 | struct usb_serial *serial; | |
1704 | ||
1705 | if (mos7840_port == NULL) | |
1706 | return; | |
1707 | ||
9c134a14 | 1708 | port = mos7840_port->port; |
3f542974 | 1709 | |
9c134a14 | 1710 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1711 | return; |
3f542974 | 1712 | |
9c134a14 | 1713 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1714 | return; |
3f542974 PS |
1715 | |
1716 | serial = port->serial; | |
1717 | ||
3f542974 | 1718 | if (!mos7840_port->open) { |
9c134a14 | 1719 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1720 | return; |
1721 | } | |
1722 | ||
3f542974 PS |
1723 | lData = LCR_BITS_8; |
1724 | lStop = LCR_STOP_1; | |
1725 | lParity = LCR_PAR_NONE; | |
1726 | ||
adc8d746 AC |
1727 | cflag = tty->termios.c_cflag; |
1728 | iflag = tty->termios.c_iflag; | |
3f542974 PS |
1729 | |
1730 | /* Change the number of bits */ | |
78692cc3 CL |
1731 | switch (cflag & CSIZE) { |
1732 | case CS5: | |
1733 | lData = LCR_BITS_5; | |
1734 | break; | |
3f542974 | 1735 | |
78692cc3 CL |
1736 | case CS6: |
1737 | lData = LCR_BITS_6; | |
1738 | break; | |
3f542974 | 1739 | |
78692cc3 CL |
1740 | case CS7: |
1741 | lData = LCR_BITS_7; | |
1742 | break; | |
1743 | ||
1744 | default: | |
1745 | case CS8: | |
1746 | lData = LCR_BITS_8; | |
1747 | break; | |
3f542974 | 1748 | } |
78692cc3 | 1749 | |
3f542974 PS |
1750 | /* Change the Parity bit */ |
1751 | if (cflag & PARENB) { | |
1752 | if (cflag & PARODD) { | |
1753 | lParity = LCR_PAR_ODD; | |
9c134a14 | 1754 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
3f542974 PS |
1755 | } else { |
1756 | lParity = LCR_PAR_EVEN; | |
9c134a14 | 1757 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
3f542974 PS |
1758 | } |
1759 | ||
1760 | } else { | |
9c134a14 | 1761 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
3f542974 PS |
1762 | } |
1763 | ||
880af9db | 1764 | if (cflag & CMSPAR) |
3f542974 | 1765 | lParity = lParity | 0x20; |
3f542974 PS |
1766 | |
1767 | /* Change the Stop bit */ | |
1768 | if (cflag & CSTOPB) { | |
1769 | lStop = LCR_STOP_2; | |
9c134a14 | 1770 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
3f542974 PS |
1771 | } else { |
1772 | lStop = LCR_STOP_1; | |
9c134a14 | 1773 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
3f542974 PS |
1774 | } |
1775 | ||
1776 | /* Update the LCR with the correct value */ | |
1777 | mos7840_port->shadowLCR &= | |
1778 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1779 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1780 | ||
9c134a14 GKH |
1781 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
1782 | mos7840_port->shadowLCR); | |
3f542974 PS |
1783 | /* Disable Interrupts */ |
1784 | Data = 0x00; | |
1785 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1786 | ||
1787 | Data = 0x00; | |
1788 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1789 | ||
1790 | Data = 0xcf; | |
1791 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1792 | ||
1793 | /* Send the updated LCR value to the mos7840 */ | |
1794 | Data = mos7840_port->shadowLCR; | |
1795 | ||
1796 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1797 | ||
1798 | Data = 0x00b; | |
1799 | mos7840_port->shadowMCR = Data; | |
1800 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1801 | Data = 0x00b; | |
1802 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1803 | ||
1804 | /* set up the MCR register and send it to the mos7840 */ | |
1805 | ||
1806 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 1807 | if (cflag & CBAUD) |
3f542974 | 1808 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 1809 | |
880af9db | 1810 | if (cflag & CRTSCTS) |
3f542974 | 1811 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 1812 | else |
3f542974 | 1813 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
1814 | |
1815 | Data = mos7840_port->shadowMCR; | |
1816 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1817 | ||
1818 | /* Determine divisor based on baud rate */ | |
1819 | baud = tty_get_baud_rate(tty); | |
1820 | ||
1821 | if (!baud) { | |
1822 | /* pick a default, any default... */ | |
9c134a14 | 1823 | dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
3f542974 PS |
1824 | baud = 9600; |
1825 | } | |
1826 | ||
9c134a14 | 1827 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
3f542974 PS |
1828 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
1829 | ||
1830 | /* Enable Interrupts */ | |
1831 | Data = 0x0c; | |
1832 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1833 | ||
ce9d8562 | 1834 | if (!mos7840_port->read_urb_busy) { |
50de36f7 | 1835 | mos7840_port->read_urb_busy = true; |
9d380190 | 1836 | status = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
3f542974 | 1837 | if (status) { |
9c134a14 | 1838 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 1839 | status); |
50de36f7 | 1840 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1841 | } |
1842 | } | |
9c134a14 GKH |
1843 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
1844 | mos7840_port->shadowLCR); | |
3f542974 PS |
1845 | } |
1846 | ||
1847 | /***************************************************************************** | |
1848 | * mos7840_set_termios | |
1849 | * this function is called by the tty driver when it wants to change | |
1850 | * the termios structure | |
1851 | *****************************************************************************/ | |
1852 | ||
95da310e AC |
1853 | static void mos7840_set_termios(struct tty_struct *tty, |
1854 | struct usb_serial_port *port, | |
606d099c | 1855 | struct ktermios *old_termios) |
3f542974 PS |
1856 | { |
1857 | int status; | |
3f542974 PS |
1858 | struct usb_serial *serial; |
1859 | struct moschip_port *mos7840_port; | |
3363155b | 1860 | |
9c134a14 | 1861 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1862 | return; |
3f542974 PS |
1863 | |
1864 | serial = port->serial; | |
1865 | ||
9c134a14 | 1866 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1867 | return; |
3f542974 PS |
1868 | |
1869 | mos7840_port = mos7840_get_port_private(port); | |
1870 | ||
1871 | if (mos7840_port == NULL) | |
1872 | return; | |
1873 | ||
3f542974 | 1874 | if (!mos7840_port->open) { |
9c134a14 | 1875 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1876 | return; |
1877 | } | |
1878 | ||
3f542974 PS |
1879 | /* change the port settings to the new ones specified */ |
1880 | ||
95da310e | 1881 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
1882 | |
1883 | if (!mos7840_port->read_urb) { | |
9c134a14 | 1884 | dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); |
3f542974 PS |
1885 | return; |
1886 | } | |
1887 | ||
ce9d8562 | 1888 | if (!mos7840_port->read_urb_busy) { |
50de36f7 | 1889 | mos7840_port->read_urb_busy = true; |
9d380190 | 1890 | status = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
3f542974 | 1891 | if (status) { |
9c134a14 | 1892 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 1893 | status); |
50de36f7 | 1894 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1895 | } |
1896 | } | |
3f542974 PS |
1897 | } |
1898 | ||
1899 | /***************************************************************************** | |
1900 | * mos7840_get_lsr_info - get line status register info | |
1901 | * | |
1902 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1903 | * is emptied. On bus types like RS485, the transmitter must | |
1904 | * release the bus after transmitting. This must be done when | |
1905 | * the transmit shift register is empty, not be done when the | |
1906 | * transmit holding register is empty. This functionality | |
1907 | * allows an RS485 driver to be written in user space. | |
1908 | *****************************************************************************/ | |
1909 | ||
95da310e | 1910 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 1911 | unsigned int __user *value) |
3f542974 PS |
1912 | { |
1913 | int count; | |
1914 | unsigned int result = 0; | |
1915 | ||
95da310e | 1916 | count = mos7840_chars_in_buffer(tty); |
9c134a14 | 1917 | if (count == 0) |
3f542974 | 1918 | result = TIOCSER_TEMT; |
3f542974 PS |
1919 | |
1920 | if (copy_to_user(value, &result, sizeof(int))) | |
1921 | return -EFAULT; | |
1922 | return 0; | |
1923 | } | |
1924 | ||
3f542974 PS |
1925 | /***************************************************************************** |
1926 | * mos7840_get_serial_info | |
1927 | * function to get information about serial port | |
1928 | *****************************************************************************/ | |
1929 | ||
1930 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 1931 | struct serial_struct __user *retinfo) |
3f542974 PS |
1932 | { |
1933 | struct serial_struct tmp; | |
1934 | ||
1935 | if (mos7840_port == NULL) | |
1936 | return -1; | |
1937 | ||
3f542974 PS |
1938 | memset(&tmp, 0, sizeof(tmp)); |
1939 | ||
1940 | tmp.type = PORT_16550A; | |
e5b1e206 | 1941 | tmp.line = mos7840_port->port->minor; |
1143832e | 1942 | tmp.port = mos7840_port->port->port_number; |
3f542974 | 1943 | tmp.irq = 0; |
3f542974 PS |
1944 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
1945 | tmp.baud_base = 9600; | |
1946 | tmp.close_delay = 5 * HZ; | |
1947 | tmp.closing_wait = 30 * HZ; | |
1948 | ||
1949 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1950 | return -EFAULT; | |
1951 | return 0; | |
1952 | } | |
1953 | ||
1954 | /***************************************************************************** | |
1955 | * SerialIoctl | |
1956 | * this function handles any ioctl calls to the driver | |
1957 | *****************************************************************************/ | |
1958 | ||
00a0d0d6 | 1959 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
1960 | unsigned int cmd, unsigned long arg) |
1961 | { | |
95da310e | 1962 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 1963 | void __user *argp = (void __user *)arg; |
3f542974 | 1964 | struct moschip_port *mos7840_port; |
3f542974 | 1965 | |
9c134a14 | 1966 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1967 | return -1; |
3f542974 PS |
1968 | |
1969 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
1970 | |
1971 | if (mos7840_port == NULL) | |
1972 | return -1; | |
1973 | ||
3f542974 PS |
1974 | switch (cmd) { |
1975 | /* return number of bytes available */ | |
1976 | ||
3f542974 | 1977 | case TIOCSERGETLSR: |
9c134a14 | 1978 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
95da310e | 1979 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 1980 | |
3f542974 | 1981 | case TIOCGSERIAL: |
9c134a14 | 1982 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
97c4965d | 1983 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
1984 | |
1985 | case TIOCSSERIAL: | |
9c134a14 | 1986 | dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); |
3f542974 | 1987 | break; |
3f542974 PS |
1988 | default: |
1989 | break; | |
1990 | } | |
3f542974 PS |
1991 | return -ENOIOCTLCMD; |
1992 | } | |
1993 | ||
0eafe4de D |
1994 | static int mos7810_check(struct usb_serial *serial) |
1995 | { | |
1996 | int i, pass_count = 0; | |
15ee89c3 | 1997 | u8 *buf; |
0eafe4de D |
1998 | __u16 data = 0, mcr_data = 0; |
1999 | __u16 test_pattern = 0x55AA; | |
15ee89c3 JH |
2000 | int res; |
2001 | ||
2002 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
2003 | if (!buf) | |
2004 | return 0; /* failed to identify 7810 */ | |
0eafe4de D |
2005 | |
2006 | /* Store MCR setting */ | |
15ee89c3 | 2007 | res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
0eafe4de | 2008 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, |
15ee89c3 JH |
2009 | buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
2010 | if (res == VENDOR_READ_LENGTH) | |
2011 | mcr_data = *buf; | |
0eafe4de D |
2012 | |
2013 | for (i = 0; i < 16; i++) { | |
2014 | /* Send the 1-bit test pattern out to MCS7810 test pin */ | |
2015 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2016 | MCS_WRREQ, MCS_WR_RTYPE, | |
2017 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), | |
2018 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); | |
2019 | ||
2020 | /* Read the test pattern back */ | |
15ee89c3 JH |
2021 | res = usb_control_msg(serial->dev, |
2022 | usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, | |
2023 | MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, | |
2024 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2025 | if (res == VENDOR_READ_LENGTH) | |
2026 | data = *buf; | |
0eafe4de D |
2027 | |
2028 | /* If this is a MCS7810 device, both test patterns must match */ | |
2029 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) | |
2030 | break; | |
2031 | ||
2032 | pass_count++; | |
2033 | } | |
2034 | ||
2035 | /* Restore MCR setting */ | |
2036 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, | |
2037 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, | |
2038 | 0, MOS_WDR_TIMEOUT); | |
2039 | ||
15ee89c3 JH |
2040 | kfree(buf); |
2041 | ||
0eafe4de D |
2042 | if (pass_count == 16) |
2043 | return 1; | |
2044 | ||
2045 | return 0; | |
2046 | } | |
2047 | ||
40c24f28 JH |
2048 | static int mos7840_probe(struct usb_serial *serial, |
2049 | const struct usb_device_id *id) | |
3f542974 | 2050 | { |
d551ec9b | 2051 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
15ee89c3 | 2052 | u8 *buf; |
40c24f28 JH |
2053 | int device_type; |
2054 | ||
2055 | if (product == MOSCHIP_DEVICE_ID_7810 || | |
2056 | product == MOSCHIP_DEVICE_ID_7820) { | |
2057 | device_type = product; | |
2058 | goto out; | |
2059 | } | |
093ea2d3 | 2060 | |
15ee89c3 | 2061 | buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
40c24f28 JH |
2062 | if (!buf) |
2063 | return -ENOMEM; | |
2064 | ||
2065 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
15ee89c3 JH |
2066 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, |
2067 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
093ea2d3 | 2068 | |
40c24f28 JH |
2069 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
2070 | if (buf[0] & 0x01) | |
2071 | device_type = MOSCHIP_DEVICE_ID_7840; | |
2072 | else if (mos7810_check(serial)) | |
2073 | device_type = MOSCHIP_DEVICE_ID_7810; | |
2074 | else | |
2075 | device_type = MOSCHIP_DEVICE_ID_7820; | |
2076 | ||
2077 | kfree(buf); | |
2078 | out: | |
683a0e4d | 2079 | usb_set_serial_data(serial, (void *)(unsigned long)device_type); |
40c24f28 JH |
2080 | |
2081 | return 0; | |
2082 | } | |
2083 | ||
07814246 JH |
2084 | static int mos7840_calc_num_ports(struct usb_serial *serial, |
2085 | struct usb_serial_endpoints *epds) | |
40c24f28 | 2086 | { |
683a0e4d | 2087 | int device_type = (unsigned long)usb_get_serial_data(serial); |
95254020 | 2088 | int num_ports; |
093ea2d3 | 2089 | |
95254020 | 2090 | num_ports = (device_type >> 4) & 0x000F; |
0eafe4de | 2091 | |
95254020 JH |
2092 | /* |
2093 | * num_ports is currently never zero as device_type is one of | |
2094 | * MOSCHIP_DEVICE_ID_78{1,2,4}0. | |
2095 | */ | |
2096 | if (num_ports == 0) | |
2097 | return -ENODEV; | |
3f542974 | 2098 | |
95254020 | 2099 | if (epds->num_bulk_in < num_ports || epds->num_bulk_out < num_ports) { |
5c75633e JH |
2100 | dev_err(&serial->interface->dev, "missing endpoints\n"); |
2101 | return -ENODEV; | |
2102 | } | |
2103 | ||
95254020 | 2104 | return num_ports; |
5c75633e JH |
2105 | } |
2106 | ||
80c00750 | 2107 | static int mos7840_port_probe(struct usb_serial_port *port) |
3f542974 | 2108 | { |
80c00750 | 2109 | struct usb_serial *serial = port->serial; |
683a0e4d | 2110 | int device_type = (unsigned long)usb_get_serial_data(serial); |
3f542974 | 2111 | struct moschip_port *mos7840_port; |
80c00750 JH |
2112 | int status; |
2113 | int pnum; | |
3f542974 | 2114 | __u16 Data; |
3f542974 | 2115 | |
3f542974 PS |
2116 | /* we set up the pointers to the endpoints in the mos7840_open * |
2117 | * function, as the structures aren't created yet. */ | |
2118 | ||
1143832e | 2119 | pnum = port->port_number; |
80c00750 | 2120 | |
ae685eff JH |
2121 | dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); |
2122 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
10c642d0 | 2123 | if (!mos7840_port) |
ae685eff | 2124 | return -ENOMEM; |
3f542974 | 2125 | |
ae685eff JH |
2126 | /* Initialize all port interrupt end point to port 0 int |
2127 | * endpoint. Our device has only one interrupt end point | |
2128 | * common to all port */ | |
2129 | ||
2130 | mos7840_port->port = port; | |
2131 | mos7840_set_port_private(port, mos7840_port); | |
2132 | spin_lock_init(&mos7840_port->pool_lock); | |
2133 | ||
2134 | /* minor is not initialised until later by | |
2135 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2136 | * to index device instances */ | |
2137 | mos7840_port->port_num = pnum + 1; | |
e5b1e206 | 2138 | dev_dbg(&port->dev, "port->minor = %d\n", port->minor); |
ae685eff | 2139 | dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); |
ae685eff JH |
2140 | |
2141 | if (mos7840_port->port_num == 1) { | |
2142 | mos7840_port->SpRegOffset = 0x0; | |
2143 | mos7840_port->ControlRegOffset = 0x1; | |
2144 | mos7840_port->DcrRegOffset = 0x4; | |
2145 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { | |
2146 | mos7840_port->SpRegOffset = 0x8; | |
2147 | mos7840_port->ControlRegOffset = 0x9; | |
2148 | mos7840_port->DcrRegOffset = 0x16; | |
2149 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { | |
2150 | mos7840_port->SpRegOffset = 0xa; | |
2151 | mos7840_port->ControlRegOffset = 0xb; | |
2152 | mos7840_port->DcrRegOffset = 0x19; | |
2153 | } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { | |
2154 | mos7840_port->SpRegOffset = 0xa; | |
2155 | mos7840_port->ControlRegOffset = 0xb; | |
2156 | mos7840_port->DcrRegOffset = 0x19; | |
2157 | } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { | |
2158 | mos7840_port->SpRegOffset = 0xc; | |
2159 | mos7840_port->ControlRegOffset = 0xd; | |
2160 | mos7840_port->DcrRegOffset = 0x1c; | |
2161 | } | |
2162 | mos7840_dump_serial_port(port, mos7840_port); | |
2163 | mos7840_set_port_private(port, mos7840_port); | |
2164 | ||
2165 | /* enable rx_disable bit in control register */ | |
2166 | status = mos7840_get_reg_sync(port, | |
2167 | mos7840_port->ControlRegOffset, &Data); | |
2168 | if (status < 0) { | |
2169 | dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); | |
2170 | goto out; | |
2171 | } else | |
2172 | dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); | |
2173 | Data |= 0x08; /* setting driver done bit */ | |
2174 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2175 | modem status reg */ | |
2176 | ||
2177 | /* Data |= 0x20; //rx_disable bit */ | |
2178 | status = mos7840_set_reg_sync(port, | |
2179 | mos7840_port->ControlRegOffset, Data); | |
2180 | if (status < 0) { | |
2181 | dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2182 | goto out; | |
2183 | } else | |
2184 | dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); | |
2185 | ||
2186 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 | |
2187 | and 0x24 in DCR3 */ | |
2188 | Data = 0x01; | |
2189 | status = mos7840_set_reg_sync(port, | |
2190 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
2191 | if (status < 0) { | |
2192 | dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); | |
2193 | goto out; | |
2194 | } else | |
2195 | dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); | |
3f542974 | 2196 | |
ae685eff JH |
2197 | Data = 0x05; |
2198 | status = mos7840_set_reg_sync(port, | |
2199 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
2200 | if (status < 0) { | |
2201 | dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); | |
2202 | goto out; | |
2203 | } else | |
2204 | dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); | |
3f542974 | 2205 | |
ae685eff JH |
2206 | Data = 0x24; |
2207 | status = mos7840_set_reg_sync(port, | |
2208 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
2209 | if (status < 0) { | |
2210 | dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); | |
2211 | goto out; | |
2212 | } else | |
2213 | dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); | |
3f542974 | 2214 | |
ae685eff JH |
2215 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
2216 | Data = 0x0; | |
2217 | status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); | |
2218 | if (status < 0) { | |
2219 | dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2220 | goto out; | |
2221 | } else | |
2222 | dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
3f542974 | 2223 | |
ae685eff JH |
2224 | Data = 0x20; |
2225 | status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); | |
2226 | if (status < 0) { | |
2227 | dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); | |
2228 | goto error; | |
2229 | } else | |
2230 | dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); | |
3f542974 | 2231 | |
ae685eff JH |
2232 | /* write value 0x0 to scratchpad register */ |
2233 | Data = 0x00; | |
2234 | status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); | |
2235 | if (status < 0) { | |
2236 | dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); | |
2237 | goto out; | |
2238 | } else | |
2239 | dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); | |
2240 | ||
2241 | /* Zero Length flag register */ | |
2242 | if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { | |
2243 | Data = 0xff; | |
80c00750 | 2244 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2245 | (__u16) (ZLP_REG1 + |
2246 | ((__u16)mos7840_port->port_num)), Data); | |
2247 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2248 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); | |
3f542974 | 2249 | if (status < 0) { |
ae685eff JH |
2250 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); |
2251 | goto out; | |
3f542974 | 2252 | } else |
ae685eff JH |
2253 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); |
2254 | } else { | |
2255 | Data = 0xff; | |
80c00750 | 2256 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2257 | (__u16) (ZLP_REG1 + |
2258 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
2259 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2260 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); | |
3f542974 | 2261 | if (status < 0) { |
ae685eff JH |
2262 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); |
2263 | goto out; | |
3f542974 | 2264 | } else |
ae685eff | 2265 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); |
3f542974 | 2266 | |
ae685eff JH |
2267 | } |
2268 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2269 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); | |
2270 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), | |
2271 | GFP_KERNEL); | |
2272 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2273 | !mos7840_port->dr) { | |
2274 | status = -ENOMEM; | |
2275 | goto error; | |
2276 | } | |
0eafe4de | 2277 | |
ae685eff | 2278 | mos7840_port->has_led = false; |
0eafe4de | 2279 | |
ae685eff JH |
2280 | /* Initialize LED timers */ |
2281 | if (device_type == MOSCHIP_DEVICE_ID_7810) { | |
2282 | mos7840_port->has_led = true; | |
0eafe4de | 2283 | |
05cf0dec JH |
2284 | mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); |
2285 | mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), | |
2286 | GFP_KERNEL); | |
2287 | if (!mos7840_port->led_urb || !mos7840_port->led_dr) { | |
2288 | status = -ENOMEM; | |
2289 | goto error; | |
2290 | } | |
2291 | ||
e99e88a9 | 2292 | timer_setup(&mos7840_port->led_timer1, mos7840_led_off, 0); |
ae685eff JH |
2293 | mos7840_port->led_timer1.expires = |
2294 | jiffies + msecs_to_jiffies(LED_ON_MS); | |
e99e88a9 KC |
2295 | timer_setup(&mos7840_port->led_timer2, mos7840_led_flag_off, |
2296 | 0); | |
ae685eff JH |
2297 | mos7840_port->led_timer2.expires = |
2298 | jiffies + msecs_to_jiffies(LED_OFF_MS); | |
0eafe4de | 2299 | |
ae685eff JH |
2300 | /* Turn off LED */ |
2301 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
2302 | } | |
2303 | out: | |
80c00750 JH |
2304 | if (pnum == serial->num_ports - 1) { |
2305 | /* Zero Length flag enable */ | |
2306 | Data = 0x0f; | |
2307 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); | |
2308 | if (status < 0) { | |
2309 | dev_dbg(&port->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); | |
2310 | goto error; | |
2311 | } else | |
2312 | dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); | |
2313 | ||
2314 | /* setting configuration feature to one */ | |
2315 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2316 | 0x03, 0x00, 0x01, 0x00, NULL, 0x00, | |
2317 | MOS_WDR_TIMEOUT); | |
2318 | } | |
3f542974 | 2319 | return 0; |
0de9a702 | 2320 | error: |
05cf0dec JH |
2321 | kfree(mos7840_port->led_dr); |
2322 | usb_free_urb(mos7840_port->led_urb); | |
80c00750 JH |
2323 | kfree(mos7840_port->dr); |
2324 | kfree(mos7840_port->ctrl_buf); | |
2325 | usb_free_urb(mos7840_port->control_urb); | |
2326 | kfree(mos7840_port); | |
0de9a702 | 2327 | |
0de9a702 | 2328 | return status; |
3f542974 PS |
2329 | } |
2330 | ||
80c00750 | 2331 | static int mos7840_port_remove(struct usb_serial_port *port) |
3f542974 | 2332 | { |
3f542974 | 2333 | struct moschip_port *mos7840_port; |
3f542974 | 2334 | |
80c00750 | 2335 | mos7840_port = mos7840_get_port_private(port); |
3f542974 | 2336 | |
80c00750 JH |
2337 | if (mos7840_port->has_led) { |
2338 | /* Turn off LED */ | |
2339 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
3f542974 | 2340 | |
80c00750 JH |
2341 | del_timer_sync(&mos7840_port->led_timer1); |
2342 | del_timer_sync(&mos7840_port->led_timer2); | |
05cf0dec JH |
2343 | |
2344 | usb_kill_urb(mos7840_port->led_urb); | |
2345 | usb_free_urb(mos7840_port->led_urb); | |
2346 | kfree(mos7840_port->led_dr); | |
f9c99bb8 | 2347 | } |
80c00750 JH |
2348 | usb_kill_urb(mos7840_port->control_urb); |
2349 | usb_free_urb(mos7840_port->control_urb); | |
2350 | kfree(mos7840_port->ctrl_buf); | |
2351 | kfree(mos7840_port->dr); | |
2352 | kfree(mos7840_port); | |
f9c99bb8 | 2353 | |
80c00750 | 2354 | return 0; |
3f542974 PS |
2355 | } |
2356 | ||
2357 | static struct usb_serial_driver moschip7840_4port_device = { | |
2358 | .driver = { | |
2359 | .owner = THIS_MODULE, | |
2360 | .name = "mos7840", | |
2361 | }, | |
2362 | .description = DRIVER_DESC, | |
68e24113 | 2363 | .id_table = id_table, |
95254020 | 2364 | .num_interrupt_in = 1, |
3f542974 PS |
2365 | .open = mos7840_open, |
2366 | .close = mos7840_close, | |
2367 | .write = mos7840_write, | |
2368 | .write_room = mos7840_write_room, | |
2369 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2370 | .throttle = mos7840_throttle, | |
2371 | .unthrottle = mos7840_unthrottle, | |
2372 | .calc_num_ports = mos7840_calc_num_ports, | |
40c24f28 | 2373 | .probe = mos7840_probe, |
3f542974 PS |
2374 | .ioctl = mos7840_ioctl, |
2375 | .set_termios = mos7840_set_termios, | |
2376 | .break_ctl = mos7840_break, | |
2377 | .tiocmget = mos7840_tiocmget, | |
2378 | .tiocmset = mos7840_tiocmset, | |
0c613371 | 2379 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
8c1a07ff | 2380 | .get_icount = usb_serial_generic_get_icount, |
80c00750 JH |
2381 | .port_probe = mos7840_port_probe, |
2382 | .port_remove = mos7840_port_remove, | |
3f542974 PS |
2383 | .read_bulk_callback = mos7840_bulk_in_callback, |
2384 | .read_int_callback = mos7840_interrupt_callback, | |
2385 | }; | |
2386 | ||
4d2a7aff AS |
2387 | static struct usb_serial_driver * const serial_drivers[] = { |
2388 | &moschip7840_4port_device, NULL | |
2389 | }; | |
2390 | ||
68e24113 | 2391 | module_usb_serial_driver(serial_drivers, id_table); |
3f542974 | 2392 | |
3f542974 PS |
2393 | MODULE_DESCRIPTION(DRIVER_DESC); |
2394 | MODULE_LICENSE("GPL"); |