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3f542974 PS |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | * | |
16 | * Clean ups from Moschip version and a few ioctl implementations by: | |
17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | |
18 | * | |
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/tty_driver.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/usb.h> | |
35 | #include <linux/usb/serial.h> | |
880af9db | 36 | #include <linux/uaccess.h> |
3f542974 | 37 | |
3f542974 PS |
38 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
39 | ||
40 | /* | |
41 | * 16C50 UART register defines | |
42 | */ | |
43 | ||
44 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
45 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
46 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
47 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
48 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
49 | ||
50 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
51 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
52 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
53 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
54 | ||
55 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
56 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
57 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
58 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
59 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
60 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
61 | ||
62 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
63 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
64 | ||
65 | #define MCR_DTR 0x01 /* Assert DTR */ | |
66 | #define MCR_RTS 0x02 /* Assert RTS */ | |
67 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
68 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
69 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
70 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
71 | ||
72 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
73 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
74 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
75 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
76 | ||
77 | /* | |
78 | * Defines used for sending commands to port | |
79 | */ | |
80 | ||
1e658489 | 81 | #define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
3f542974 PS |
82 | |
83 | #define MOS_PORT1 0x0200 | |
84 | #define MOS_PORT2 0x0300 | |
85 | #define MOS_VENREG 0x0000 | |
86 | #define MOS_MAX_PORT 0x02 | |
87 | #define MOS_WRITE 0x0E | |
88 | #define MOS_READ 0x0D | |
89 | ||
90 | /* Requests */ | |
91 | #define MCS_RD_RTYPE 0xC0 | |
92 | #define MCS_WR_RTYPE 0x40 | |
93 | #define MCS_RDREQ 0x0D | |
94 | #define MCS_WRREQ 0x0E | |
95 | #define MCS_CTRL_TIMEOUT 500 | |
96 | #define VENDOR_READ_LENGTH (0x01) | |
97 | ||
98 | #define MAX_NAME_LEN 64 | |
99 | ||
880af9db AC |
100 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
101 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
102 | |
103 | /* For higher baud Rates use TIOCEXBAUD */ | |
104 | #define TIOCEXBAUD 0x5462 | |
105 | ||
106 | /* vendor id and device id defines */ | |
107 | ||
11e1abb4 | 108 | /* The native mos7840/7820 component */ |
3f542974 PS |
109 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
110 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
111 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
0eafe4de | 112 | #define MOSCHIP_DEVICE_ID_7810 0x7810 |
11e1abb4 DL |
113 | /* The native component can have its vendor/device id's overridden |
114 | * in vendor-specific implementations. Such devices can be handled | |
68e24113 | 115 | * by making a change here, in id_table. |
11e1abb4 | 116 | */ |
870408c8 DL |
117 | #define USB_VENDOR_ID_BANDB 0x0856 |
118 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 | |
119 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 | |
120 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
121 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 | |
122 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
123 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
124 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
125 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
126 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
127 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 | |
128 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
129 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 | |
130 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
3f542974 | 131 | |
9d498bea RL |
132 | /* This driver also supports |
133 | * ATEN UC2324 device using Moschip MCS7840 | |
134 | * ATEN UC2322 device using Moschip MCS7820 | |
135 | */ | |
e9b8cffa TC |
136 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
137 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 138 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 139 | |
11e1abb4 | 140 | /* Interrupt Routine Defines */ |
3f542974 PS |
141 | |
142 | #define SERIAL_IIR_RLS 0x06 | |
143 | #define SERIAL_IIR_MS 0x00 | |
144 | ||
145 | /* | |
146 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
147 | */ | |
148 | #define SERIAL_LSR_DR 0x0001 | |
149 | #define SERIAL_LSR_OE 0x0002 | |
150 | #define SERIAL_LSR_PE 0x0004 | |
151 | #define SERIAL_LSR_FE 0x0008 | |
152 | #define SERIAL_LSR_BI 0x0010 | |
153 | ||
154 | #define MOS_MSR_DELTA_CTS 0x10 | |
155 | #define MOS_MSR_DELTA_DSR 0x20 | |
156 | #define MOS_MSR_DELTA_RI 0x40 | |
157 | #define MOS_MSR_DELTA_CD 0x80 | |
158 | ||
880af9db | 159 | /* Serial Port register Address */ |
3f542974 PS |
160 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
161 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
162 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
163 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
164 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
165 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
166 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
167 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
168 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
169 | ||
170 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
171 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
093ea2d3 | 172 | #define GPIO_REGISTER ((__u16)(0x07)) |
3f542974 PS |
173 | |
174 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
175 | ||
176 | /* | |
177 | * URB POOL related defines | |
178 | */ | |
179 | #define NUM_URBS 16 /* URB Count */ | |
180 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
181 | ||
0eafe4de D |
182 | /* LED on/off milliseconds*/ |
183 | #define LED_ON_MS 500 | |
184 | #define LED_OFF_MS 500 | |
185 | ||
186 | static int device_type; | |
3f542974 | 187 | |
b9c87663 | 188 | static const struct usb_device_id id_table[] = { |
3f542974 PS |
189 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
190 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
0eafe4de | 191 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
acf509ae | 192 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 193 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 194 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 195 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 204 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 205 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 206 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
207 | {} /* terminating entry */ |
208 | }; | |
68e24113 | 209 | MODULE_DEVICE_TABLE(usb, id_table); |
3f542974 PS |
210 | |
211 | /* This structure holds all of the local port information */ | |
212 | ||
213 | struct moschip_port { | |
214 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
215 | struct urb *write_urb; /* write URB for this port */ | |
216 | struct urb *read_urb; /* read URB for this port */ | |
217 | __u8 shadowLCR; /* last LCR value received */ | |
218 | __u8 shadowMCR; /* last MCR value received */ | |
219 | char open; | |
0de9a702 | 220 | char open_ports; |
3f542974 PS |
221 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
222 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
223 | int delta_msr_cond; | |
224 | struct async_icount icount; | |
225 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
226 | ||
880af9db | 227 | /* Offsets */ |
3f542974 PS |
228 | __u8 SpRegOffset; |
229 | __u8 ControlRegOffset; | |
230 | __u8 DcrRegOffset; | |
880af9db | 231 | /* for processing control URBS in interrupt context */ |
3f542974 | 232 | struct urb *control_urb; |
0de9a702 | 233 | struct usb_ctrlrequest *dr; |
3f542974 PS |
234 | char *ctrl_buf; |
235 | int MsrLsr; | |
236 | ||
0de9a702 | 237 | spinlock_t pool_lock; |
3f542974 | 238 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 239 | char busy[NUM_URBS]; |
50de36f7 | 240 | bool read_urb_busy; |
3f542974 | 241 | |
0eafe4de D |
242 | /* For device(s) with LED indicator */ |
243 | bool has_led; | |
244 | bool led_flag; | |
245 | struct timer_list led_timer1; /* Timer for LED on */ | |
246 | struct timer_list led_timer2; /* Timer for LED off */ | |
247 | }; | |
3f542974 | 248 | |
3f542974 PS |
249 | /* |
250 | * mos7840_set_reg_sync | |
251 | * To set the Control register by calling usb_fill_control_urb function | |
252 | * by passing usb_sndctrlpipe function as parameter. | |
253 | */ | |
254 | ||
255 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
256 | __u16 val) | |
257 | { | |
258 | struct usb_device *dev = port->serial->dev; | |
259 | val = val & 0x00ff; | |
9c134a14 | 260 | dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
3f542974 PS |
261 | |
262 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
263 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
264 | MOS_WDR_TIMEOUT); | |
265 | } | |
266 | ||
267 | /* | |
268 | * mos7840_get_reg_sync | |
269 | * To set the Uart register by calling usb_fill_control_urb function by | |
270 | * passing usb_rcvctrlpipe function as parameter. | |
271 | */ | |
272 | ||
273 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 274 | __u16 *val) |
3f542974 PS |
275 | { |
276 | struct usb_device *dev = port->serial->dev; | |
277 | int ret = 0; | |
9e221a35 JH |
278 | u8 *buf; |
279 | ||
280 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
281 | if (!buf) | |
282 | return -ENOMEM; | |
3f542974 PS |
283 | |
284 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 285 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 286 | MOS_WDR_TIMEOUT); |
9e221a35 | 287 | *val = buf[0]; |
9c134a14 | 288 | dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
9e221a35 JH |
289 | |
290 | kfree(buf); | |
3f542974 PS |
291 | return ret; |
292 | } | |
293 | ||
294 | /* | |
295 | * mos7840_set_uart_reg | |
296 | * To set the Uart register by calling usb_fill_control_urb function by | |
297 | * passing usb_sndctrlpipe function as parameter. | |
298 | */ | |
299 | ||
300 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
301 | __u16 val) | |
302 | { | |
303 | ||
304 | struct usb_device *dev = port->serial->dev; | |
305 | val = val & 0x00ff; | |
880af9db AC |
306 | /* For the UART control registers, the application number need |
307 | to be Or'ed */ | |
0de9a702 | 308 | if (port->serial->num_ports == 4) { |
880af9db AC |
309 | val |= (((__u16) port->number - |
310 | (__u16) (port->serial->minor)) + 1) << 8; | |
3f542974 PS |
311 | } else { |
312 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 313 | val |= (((__u16) port->number - |
3f542974 | 314 | (__u16) (port->serial->minor)) + 1) << 8; |
3f542974 | 315 | } else { |
9c134a14 | 316 | val |= (((__u16) port->number - |
3f542974 | 317 | (__u16) (port->serial->minor)) + 2) << 8; |
3f542974 PS |
318 | } |
319 | } | |
9c134a14 | 320 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
3f542974 PS |
321 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
322 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
323 | MOS_WDR_TIMEOUT); | |
324 | ||
325 | } | |
326 | ||
327 | /* | |
328 | * mos7840_get_uart_reg | |
329 | * To set the Control register by calling usb_fill_control_urb function | |
330 | * by passing usb_rcvctrlpipe function as parameter. | |
331 | */ | |
332 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 333 | __u16 *val) |
3f542974 PS |
334 | { |
335 | struct usb_device *dev = port->serial->dev; | |
336 | int ret = 0; | |
337 | __u16 Wval; | |
9e221a35 JH |
338 | u8 *buf; |
339 | ||
340 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
341 | if (!buf) | |
342 | return -ENOMEM; | |
3f542974 | 343 | |
880af9db | 344 | /* Wval is same as application number */ |
0de9a702 | 345 | if (port->serial->num_ports == 4) { |
3f542974 PS |
346 | Wval = |
347 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
348 | 1) << 8; | |
3f542974 PS |
349 | } else { |
350 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 351 | Wval = (((__u16) port->number - |
3f542974 | 352 | (__u16) (port->serial->minor)) + 1) << 8; |
3f542974 | 353 | } else { |
880af9db | 354 | Wval = (((__u16) port->number - |
3f542974 | 355 | (__u16) (port->serial->minor)) + 2) << 8; |
3f542974 PS |
356 | } |
357 | } | |
9c134a14 | 358 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
3f542974 | 359 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
9e221a35 | 360 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 361 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
362 | *val = buf[0]; |
363 | ||
364 | kfree(buf); | |
3f542974 PS |
365 | return ret; |
366 | } | |
367 | ||
9c134a14 GKH |
368 | static void mos7840_dump_serial_port(struct usb_serial_port *port, |
369 | struct moschip_port *mos7840_port) | |
3f542974 PS |
370 | { |
371 | ||
9c134a14 GKH |
372 | dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
373 | dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); | |
374 | dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); | |
3f542974 PS |
375 | |
376 | } | |
377 | ||
378 | /************************************************************************/ | |
379 | /************************************************************************/ | |
380 | /* I N T E R F A C E F U N C T I O N S */ | |
381 | /* I N T E R F A C E F U N C T I O N S */ | |
382 | /************************************************************************/ | |
383 | /************************************************************************/ | |
384 | ||
385 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
386 | struct moschip_port *data) | |
387 | { | |
388 | usb_set_serial_port_data(port, (void *)data); | |
389 | } | |
390 | ||
391 | static inline struct moschip_port *mos7840_get_port_private(struct | |
392 | usb_serial_port | |
393 | *port) | |
394 | { | |
395 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
396 | } | |
397 | ||
0de9a702 | 398 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
399 | { |
400 | struct moschip_port *mos7840_port; | |
401 | struct async_icount *icount; | |
402 | mos7840_port = port; | |
403 | icount = &mos7840_port->icount; | |
404 | if (new_msr & | |
405 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
406 | MOS_MSR_DELTA_CD)) { | |
407 | icount = &mos7840_port->icount; | |
408 | ||
409 | /* update input line counters */ | |
410 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
411 | icount->cts++; | |
0de9a702 | 412 | smp_wmb(); |
3f542974 PS |
413 | } |
414 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
415 | icount->dsr++; | |
0de9a702 | 416 | smp_wmb(); |
3f542974 PS |
417 | } |
418 | if (new_msr & MOS_MSR_DELTA_CD) { | |
419 | icount->dcd++; | |
0de9a702 | 420 | smp_wmb(); |
3f542974 PS |
421 | } |
422 | if (new_msr & MOS_MSR_DELTA_RI) { | |
423 | icount->rng++; | |
0de9a702 | 424 | smp_wmb(); |
3f542974 PS |
425 | } |
426 | } | |
3f542974 PS |
427 | } |
428 | ||
0de9a702 | 429 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
430 | { |
431 | struct async_icount *icount; | |
432 | ||
3f542974 | 433 | if (new_lsr & SERIAL_LSR_BI) { |
880af9db AC |
434 | /* |
435 | * Parity and Framing errors only count if they | |
436 | * occur exclusive of a break being | |
437 | * received. | |
438 | */ | |
3f542974 PS |
439 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
440 | } | |
441 | ||
442 | /* update input line counters */ | |
443 | icount = &port->icount; | |
444 | if (new_lsr & SERIAL_LSR_BI) { | |
445 | icount->brk++; | |
0de9a702 | 446 | smp_wmb(); |
3f542974 PS |
447 | } |
448 | if (new_lsr & SERIAL_LSR_OE) { | |
449 | icount->overrun++; | |
0de9a702 | 450 | smp_wmb(); |
3f542974 PS |
451 | } |
452 | if (new_lsr & SERIAL_LSR_PE) { | |
453 | icount->parity++; | |
0de9a702 | 454 | smp_wmb(); |
3f542974 PS |
455 | } |
456 | if (new_lsr & SERIAL_LSR_FE) { | |
457 | icount->frame++; | |
0de9a702 | 458 | smp_wmb(); |
3f542974 | 459 | } |
3f542974 PS |
460 | } |
461 | ||
462 | /************************************************************************/ | |
463 | /************************************************************************/ | |
464 | /* U S B C A L L B A C K F U N C T I O N S */ | |
465 | /* U S B C A L L B A C K F U N C T I O N S */ | |
466 | /************************************************************************/ | |
467 | /************************************************************************/ | |
468 | ||
7d12e780 | 469 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
470 | { |
471 | unsigned char *data; | |
472 | struct moschip_port *mos7840_port; | |
9c134a14 | 473 | struct device *dev = &urb->dev->dev; |
3f542974 | 474 | __u8 regval = 0x0; |
0643c724 | 475 | int status = urb->status; |
3f542974 | 476 | |
cdc97792 | 477 | mos7840_port = urb->context; |
0de9a702 | 478 | |
0643c724 | 479 | switch (status) { |
3f542974 PS |
480 | case 0: |
481 | /* success */ | |
482 | break; | |
483 | case -ECONNRESET: | |
484 | case -ENOENT: | |
485 | case -ESHUTDOWN: | |
486 | /* this urb is terminated, clean up */ | |
9c134a14 | 487 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
3f542974 PS |
488 | return; |
489 | default: | |
9c134a14 | 490 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
28c3ae9a | 491 | return; |
3f542974 PS |
492 | } |
493 | ||
9c134a14 GKH |
494 | dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); |
495 | dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
496 | mos7840_port->MsrLsr, mos7840_port->port_num); | |
3f542974 PS |
497 | data = urb->transfer_buffer; |
498 | regval = (__u8) data[0]; | |
9c134a14 | 499 | dev_dbg(dev, "%s data is %x\n", __func__, regval); |
3f542974 PS |
500 | if (mos7840_port->MsrLsr == 0) |
501 | mos7840_handle_new_msr(mos7840_port, regval); | |
502 | else if (mos7840_port->MsrLsr == 1) | |
503 | mos7840_handle_new_lsr(mos7840_port, regval); | |
3f542974 PS |
504 | } |
505 | ||
506 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 507 | __u16 *val) |
3f542974 PS |
508 | { |
509 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
510 | struct usb_ctrlrequest *dr = mcs->dr; |
511 | unsigned char *buffer = mcs->ctrl_buf; | |
512 | int ret; | |
3f542974 | 513 | |
3f542974 PS |
514 | dr->bRequestType = MCS_RD_RTYPE; |
515 | dr->bRequest = MCS_RDREQ; | |
880af9db | 516 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
517 | dr->wIndex = cpu_to_le16(reg); |
518 | dr->wLength = cpu_to_le16(2); | |
519 | ||
520 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
521 | (unsigned char *)dr, buffer, 2, | |
522 | mos7840_control_callback, mcs); | |
523 | mcs->control_urb->transfer_buffer_length = 2; | |
524 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
525 | return ret; | |
526 | } | |
527 | ||
0eafe4de D |
528 | static void mos7840_set_led_callback(struct urb *urb) |
529 | { | |
530 | switch (urb->status) { | |
531 | case 0: | |
532 | /* Success */ | |
533 | break; | |
534 | case -ECONNRESET: | |
535 | case -ENOENT: | |
536 | case -ESHUTDOWN: | |
537 | /* This urb is terminated, clean up */ | |
9c134a14 GKH |
538 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d", |
539 | __func__, urb->status); | |
0eafe4de D |
540 | break; |
541 | default: | |
9c134a14 GKH |
542 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d", |
543 | __func__, urb->status); | |
0eafe4de D |
544 | } |
545 | } | |
546 | ||
547 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, | |
548 | __u16 reg) | |
549 | { | |
550 | struct usb_device *dev = mcs->port->serial->dev; | |
551 | struct usb_ctrlrequest *dr = mcs->dr; | |
552 | ||
553 | dr->bRequestType = MCS_WR_RTYPE; | |
554 | dr->bRequest = MCS_WRREQ; | |
555 | dr->wValue = cpu_to_le16(wval); | |
556 | dr->wIndex = cpu_to_le16(reg); | |
557 | dr->wLength = cpu_to_le16(0); | |
558 | ||
559 | usb_fill_control_urb(mcs->control_urb, dev, usb_sndctrlpipe(dev, 0), | |
560 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); | |
561 | ||
562 | usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
563 | } | |
564 | ||
565 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, | |
566 | __u16 val) | |
567 | { | |
568 | struct usb_device *dev = port->serial->dev; | |
569 | ||
570 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, | |
571 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); | |
572 | } | |
573 | ||
574 | static void mos7840_led_off(unsigned long arg) | |
575 | { | |
576 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
577 | ||
578 | /* Turn off LED */ | |
579 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); | |
580 | mod_timer(&mcs->led_timer2, | |
581 | jiffies + msecs_to_jiffies(LED_OFF_MS)); | |
582 | } | |
583 | ||
584 | static void mos7840_led_flag_off(unsigned long arg) | |
585 | { | |
586 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
587 | ||
588 | mcs->led_flag = false; | |
589 | } | |
590 | ||
3f542974 PS |
591 | /***************************************************************************** |
592 | * mos7840_interrupt_callback | |
593 | * this is the callback function for when we have received data on the | |
594 | * interrupt endpoint. | |
595 | *****************************************************************************/ | |
596 | ||
7d12e780 | 597 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
598 | { |
599 | int result; | |
600 | int length; | |
601 | struct moschip_port *mos7840_port; | |
602 | struct usb_serial *serial; | |
603 | __u16 Data; | |
604 | unsigned char *data; | |
605 | __u8 sp[5], st; | |
0de9a702 ON |
606 | int i, rv = 0; |
607 | __u16 wval, wreg = 0; | |
0643c724 | 608 | int status = urb->status; |
3f542974 | 609 | |
0643c724 | 610 | switch (status) { |
3f542974 PS |
611 | case 0: |
612 | /* success */ | |
613 | break; | |
614 | case -ECONNRESET: | |
615 | case -ENOENT: | |
616 | case -ESHUTDOWN: | |
617 | /* this urb is terminated, clean up */ | |
9c134a14 GKH |
618 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
619 | __func__, status); | |
3f542974 PS |
620 | return; |
621 | default: | |
9c134a14 GKH |
622 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
623 | __func__, status); | |
3f542974 PS |
624 | goto exit; |
625 | } | |
626 | ||
627 | length = urb->actual_length; | |
628 | data = urb->transfer_buffer; | |
629 | ||
cdc97792 | 630 | serial = urb->context; |
3f542974 PS |
631 | |
632 | /* Moschip get 5 bytes | |
633 | * Byte 1 IIR Port 1 (port.number is 0) | |
634 | * Byte 2 IIR Port 2 (port.number is 1) | |
635 | * Byte 3 IIR Port 3 (port.number is 2) | |
636 | * Byte 4 IIR Port 4 (port.number is 3) | |
637 | * Byte 5 FIFO status for both */ | |
638 | ||
639 | if (length && length > 5) { | |
9c134a14 | 640 | dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); |
3f542974 PS |
641 | return; |
642 | } | |
643 | ||
644 | sp[0] = (__u8) data[0]; | |
645 | sp[1] = (__u8) data[1]; | |
646 | sp[2] = (__u8) data[2]; | |
647 | sp[3] = (__u8) data[3]; | |
648 | st = (__u8) data[4]; | |
649 | ||
650 | for (i = 0; i < serial->num_ports; i++) { | |
651 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
652 | wval = | |
653 | (((__u16) serial->port[i]->number - | |
654 | (__u16) (serial->minor)) + 1) << 8; | |
655 | if (mos7840_port->open) { | |
656 | if (sp[i] & 0x01) { | |
9c134a14 | 657 | dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); |
3f542974 PS |
658 | } else { |
659 | switch (sp[i] & 0x0f) { | |
660 | case SERIAL_IIR_RLS: | |
9c134a14 GKH |
661 | dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); |
662 | dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); | |
3f542974 | 663 | mos7840_port->MsrLsr = 1; |
0de9a702 | 664 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
665 | break; |
666 | case SERIAL_IIR_MS: | |
9c134a14 | 667 | dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); |
3f542974 | 668 | mos7840_port->MsrLsr = 0; |
0de9a702 | 669 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
670 | break; |
671 | } | |
e681b66f | 672 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); |
3f542974 PS |
673 | } |
674 | } | |
675 | } | |
880af9db AC |
676 | if (!(rv < 0)) |
677 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
678 | return; |
679 | exit: | |
3f542974 PS |
680 | result = usb_submit_urb(urb, GFP_ATOMIC); |
681 | if (result) { | |
682 | dev_err(&urb->dev->dev, | |
683 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 684 | __func__, result); |
3f542974 | 685 | } |
3f542974 PS |
686 | } |
687 | ||
688 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
689 | const char *function) | |
690 | { | |
691 | if (!port) { | |
9c134a14 | 692 | pr_debug("%s - port == NULL\n", function); |
3f542974 PS |
693 | return -1; |
694 | } | |
695 | if (!port->serial) { | |
9c134a14 | 696 | pr_debug("%s - port->serial == NULL\n", function); |
3f542974 PS |
697 | return -1; |
698 | } | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
704 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
705 | const char *function) | |
706 | { | |
707 | if (!serial) { | |
9c134a14 | 708 | pr_debug("%s - serial == NULL\n", function); |
3f542974 PS |
709 | return -1; |
710 | } | |
711 | if (!serial->type) { | |
9c134a14 | 712 | pr_debug("%s - serial->type == NULL!\n", function); |
3f542974 PS |
713 | return -1; |
714 | } | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
719 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
720 | const char *function) | |
721 | { | |
722 | /* if no port was specified, or it fails a paranoia check */ | |
723 | if (!port || | |
724 | mos7840_port_paranoia_check(port, function) || | |
725 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
726 | /* then say that we don't have a valid usb_serial thing, |
727 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
728 | return NULL; |
729 | } | |
730 | ||
731 | return port->serial; | |
732 | } | |
733 | ||
734 | /***************************************************************************** | |
735 | * mos7840_bulk_in_callback | |
736 | * this is the callback function for when we have received data on the | |
737 | * bulk in endpoint. | |
738 | *****************************************************************************/ | |
739 | ||
7d12e780 | 740 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 741 | { |
0643c724 | 742 | int retval; |
3f542974 PS |
743 | unsigned char *data; |
744 | struct usb_serial *serial; | |
745 | struct usb_serial_port *port; | |
746 | struct moschip_port *mos7840_port; | |
0643c724 | 747 | int status = urb->status; |
3f542974 | 748 | |
cdc97792 | 749 | mos7840_port = urb->context; |
9c134a14 | 750 | if (!mos7840_port) |
50de36f7 | 751 | return; |
50de36f7 GKH |
752 | |
753 | if (status) { | |
9c134a14 | 754 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
50de36f7 | 755 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
756 | return; |
757 | } | |
758 | ||
9c134a14 | 759 | port = mos7840_port->port; |
441b62c1 | 760 | if (mos7840_port_paranoia_check(port, __func__)) { |
50de36f7 | 761 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
762 | return; |
763 | } | |
764 | ||
441b62c1 | 765 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 766 | if (!serial) { |
50de36f7 | 767 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
768 | return; |
769 | } | |
770 | ||
3f542974 | 771 | data = urb->transfer_buffer; |
59d33f2f | 772 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
3f542974 | 773 | |
3f542974 | 774 | if (urb->actual_length) { |
05c7cd39 | 775 | struct tty_port *tport = &mos7840_port->port->port; |
2e124b4a JS |
776 | tty_insert_flip_string(tport, data, urb->actual_length); |
777 | tty_flip_buffer_push(tport); | |
3f542974 | 778 | mos7840_port->icount.rx += urb->actual_length; |
0de9a702 | 779 | smp_wmb(); |
9c134a14 | 780 | dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx); |
3f542974 PS |
781 | } |
782 | ||
783 | if (!mos7840_port->read_urb) { | |
9c134a14 | 784 | dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); |
50de36f7 | 785 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
786 | return; |
787 | } | |
788 | ||
0eafe4de D |
789 | /* Turn on LED */ |
790 | if (mos7840_port->has_led && !mos7840_port->led_flag) { | |
791 | mos7840_port->led_flag = true; | |
792 | mos7840_set_led_async(mos7840_port, 0x0301, | |
793 | MODEM_CONTROL_REGISTER); | |
794 | mod_timer(&mos7840_port->led_timer1, | |
795 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
796 | } | |
3f542974 | 797 | |
50de36f7 | 798 | mos7840_port->read_urb_busy = true; |
0643c724 | 799 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 800 | |
0643c724 | 801 | if (retval) { |
9c134a14 | 802 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
50de36f7 | 803 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
804 | } |
805 | } | |
806 | ||
807 | /***************************************************************************** | |
808 | * mos7840_bulk_out_data_callback | |
880af9db AC |
809 | * this is the callback function for when we have finished sending |
810 | * serial data on the bulk out endpoint. | |
3f542974 PS |
811 | *****************************************************************************/ |
812 | ||
7d12e780 | 813 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
814 | { |
815 | struct moschip_port *mos7840_port; | |
9c134a14 | 816 | struct usb_serial_port *port; |
3f542974 | 817 | struct tty_struct *tty; |
0643c724 | 818 | int status = urb->status; |
0de9a702 ON |
819 | int i; |
820 | ||
cdc97792 | 821 | mos7840_port = urb->context; |
9c134a14 | 822 | port = mos7840_port->port; |
0de9a702 ON |
823 | spin_lock(&mos7840_port->pool_lock); |
824 | for (i = 0; i < NUM_URBS; i++) { | |
825 | if (urb == mos7840_port->write_urb_pool[i]) { | |
826 | mos7840_port->busy[i] = 0; | |
827 | break; | |
828 | } | |
829 | } | |
830 | spin_unlock(&mos7840_port->pool_lock); | |
831 | ||
0643c724 | 832 | if (status) { |
9c134a14 | 833 | dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
3f542974 PS |
834 | return; |
835 | } | |
836 | ||
9c134a14 | 837 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 838 | return; |
3f542974 | 839 | |
9c134a14 | 840 | tty = tty_port_tty_get(&port->port); |
b963a844 JS |
841 | if (tty && mos7840_port->open) |
842 | tty_wakeup(tty); | |
4a90f09b | 843 | tty_kref_put(tty); |
3f542974 PS |
844 | |
845 | } | |
846 | ||
847 | /************************************************************************/ | |
848 | /* 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 */ | |
849 | /************************************************************************/ | |
850 | #ifdef MCSSerialProbe | |
851 | static int mos7840_serial_probe(struct usb_serial *serial, | |
852 | const struct usb_device_id *id) | |
853 | { | |
854 | ||
855 | /*need to implement the mode_reg reading and updating\ | |
856 | structures usb_serial_ device_type\ | |
857 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
858 | /* Also we can update the changes attach */ | |
859 | return 1; | |
860 | } | |
861 | #endif | |
862 | ||
863 | /***************************************************************************** | |
864 | * mos7840_open | |
865 | * this function is called by the tty driver when a port is opened | |
866 | * If successful, we return 0 | |
867 | * Otherwise we return a negative error number. | |
868 | *****************************************************************************/ | |
869 | ||
a509a7e4 | 870 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
871 | { |
872 | int response; | |
873 | int j; | |
874 | struct usb_serial *serial; | |
875 | struct urb *urb; | |
876 | __u16 Data; | |
877 | int status; | |
878 | struct moschip_port *mos7840_port; | |
0de9a702 | 879 | struct moschip_port *port0; |
3f542974 | 880 | |
9c134a14 | 881 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 882 | return -ENODEV; |
3f542974 | 883 | |
3f542974 PS |
884 | serial = port->serial; |
885 | ||
9c134a14 | 886 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 887 | return -ENODEV; |
3f542974 PS |
888 | |
889 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 890 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 891 | |
0de9a702 | 892 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
893 | return -ENODEV; |
894 | ||
895 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
896 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 897 | port0->open_ports++; |
3f542974 PS |
898 | |
899 | /* Initialising the write urb pool */ | |
900 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 901 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
902 | mos7840_port->write_urb_pool[j] = urb; |
903 | ||
904 | if (urb == NULL) { | |
194343d9 | 905 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
906 | continue; |
907 | } | |
908 | ||
880af9db AC |
909 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
910 | GFP_KERNEL); | |
3f542974 | 911 | if (!urb->transfer_buffer) { |
0de9a702 ON |
912 | usb_free_urb(urb); |
913 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
914 | dev_err(&port->dev, |
915 | "%s-out of memory for urb buffers.\n", | |
916 | __func__); | |
3f542974 PS |
917 | continue; |
918 | } | |
919 | } | |
920 | ||
921 | /***************************************************************************** | |
922 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
923 | * | |
924 | * Register Index | |
925 | * 1 : IER | |
926 | * 2 : FCR | |
927 | * 3 : LCR | |
928 | * 4 : MCR | |
929 | * | |
930 | * 0x08 : SP1/2 Control Reg | |
931 | *****************************************************************************/ | |
932 | ||
880af9db | 933 | /* NEED to check the following Block */ |
3f542974 | 934 | |
3f542974 PS |
935 | Data = 0x0; |
936 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
937 | if (status < 0) { | |
9c134a14 | 938 | dev_dbg(&port->dev, "Reading Spreg failed\n"); |
3f542974 PS |
939 | return -1; |
940 | } | |
941 | Data |= 0x80; | |
942 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
943 | if (status < 0) { | |
9c134a14 | 944 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
3f542974 PS |
945 | return -1; |
946 | } | |
947 | ||
948 | Data &= ~0x80; | |
949 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
950 | if (status < 0) { | |
9c134a14 | 951 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
3f542974 PS |
952 | return -1; |
953 | } | |
880af9db | 954 | /* End of block to be checked */ |
3f542974 | 955 | |
3f542974 | 956 | Data = 0x0; |
880af9db AC |
957 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
958 | &Data); | |
3f542974 | 959 | if (status < 0) { |
9c134a14 | 960 | dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
3f542974 PS |
961 | return -1; |
962 | } | |
880af9db AC |
963 | Data |= 0x08; /* Driver done bit */ |
964 | Data |= 0x20; /* rx_disable */ | |
965 | status = mos7840_set_reg_sync(port, | |
966 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 967 | if (status < 0) { |
9c134a14 | 968 | dev_dbg(&port->dev, "writing Controlreg failed\n"); |
3f542974 PS |
969 | return -1; |
970 | } | |
880af9db AC |
971 | /* do register settings here */ |
972 | /* Set all regs to the device default values. */ | |
973 | /*********************************** | |
974 | * First Disable all interrupts. | |
975 | ***********************************/ | |
3f542974 | 976 | Data = 0x00; |
3f542974 PS |
977 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
978 | if (status < 0) { | |
9c134a14 | 979 | dev_dbg(&port->dev, "disabling interrupts failed\n"); |
3f542974 PS |
980 | return -1; |
981 | } | |
880af9db | 982 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 983 | Data = 0x00; |
3f542974 PS |
984 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
985 | if (status < 0) { | |
9c134a14 | 986 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
3f542974 PS |
987 | return -1; |
988 | } | |
989 | ||
990 | Data = 0xcf; | |
3f542974 PS |
991 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
992 | if (status < 0) { | |
9c134a14 | 993 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
3f542974 PS |
994 | return -1; |
995 | } | |
996 | ||
997 | Data = 0x03; | |
3f542974 PS |
998 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
999 | mos7840_port->shadowLCR = Data; | |
1000 | ||
1001 | Data = 0x0b; | |
3f542974 PS |
1002 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
1003 | mos7840_port->shadowMCR = Data; | |
1004 | ||
1005 | Data = 0x00; | |
3f542974 PS |
1006 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1007 | mos7840_port->shadowLCR = Data; | |
1008 | ||
880af9db | 1009 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1010 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1011 | ||
1012 | Data = 0x0c; | |
3f542974 PS |
1013 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1014 | ||
1015 | Data = 0x0; | |
3f542974 PS |
1016 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1017 | ||
1018 | Data = 0x00; | |
3f542974 PS |
1019 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1020 | ||
1021 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
1022 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1023 | mos7840_port->shadowLCR = Data; | |
1024 | ||
880af9db | 1025 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 1026 | Data = 0x0; |
3f542974 PS |
1027 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
1028 | ||
1029 | Data = Data | 0x0c; | |
3f542974 PS |
1030 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1031 | ||
1032 | Data = Data & ~0x0c; | |
3f542974 | 1033 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1034 | /* Finally enable all interrupts */ |
3f542974 | 1035 | Data = 0x0c; |
3f542974 PS |
1036 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1037 | ||
880af9db | 1038 | /* clearing rx_disable */ |
3f542974 | 1039 | Data = 0x0; |
880af9db AC |
1040 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1041 | &Data); | |
3f542974 | 1042 | Data = Data & ~0x20; |
880af9db AC |
1043 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1044 | Data); | |
3f542974 | 1045 | |
880af9db | 1046 | /* rx_negate */ |
3f542974 | 1047 | Data = 0x0; |
880af9db AC |
1048 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1049 | &Data); | |
3f542974 | 1050 | Data = Data | 0x10; |
880af9db AC |
1051 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1052 | Data); | |
3f542974 | 1053 | |
880af9db AC |
1054 | /* Check to see if we've set up our endpoint info yet * |
1055 | * (can't set it up in mos7840_startup as the structures * | |
1056 | * were not set up at that time.) */ | |
0de9a702 | 1057 | if (port0->open_ports == 1) { |
3f542974 | 1058 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1059 | /* set up interrupt urb */ |
3f542974 | 1060 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1061 | serial->dev, |
1062 | usb_rcvintpipe(serial->dev, | |
1063 | serial->port[0]->interrupt_in_endpointAddress), | |
1064 | serial->port[0]->interrupt_in_buffer, | |
1065 | serial->port[0]->interrupt_in_urb-> | |
1066 | transfer_buffer_length, | |
1067 | mos7840_interrupt_callback, | |
1068 | serial, | |
1069 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1070 | |
1071 | /* start interrupt read for mos7840 * | |
1072 | * will continue as long as mos7840 is connected */ | |
1073 | ||
1074 | response = | |
1075 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1076 | GFP_KERNEL); | |
1077 | if (response) { | |
194343d9 GKH |
1078 | dev_err(&port->dev, "%s - Error %d submitting " |
1079 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1080 | } |
1081 | ||
1082 | } | |
1083 | ||
1084 | } | |
1085 | ||
1086 | /* see if we've set up our endpoint info yet * | |
1087 | * (can't set it up in mos7840_startup as the * | |
1088 | * structures were not set up at that time.) */ | |
1089 | ||
9c134a14 GKH |
1090 | dev_dbg(&port->dev, "port number is %d\n", port->number); |
1091 | dev_dbg(&port->dev, "serial number is %d\n", port->serial->minor); | |
1092 | dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); | |
1093 | dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); | |
1094 | dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); | |
1095 | dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); | |
3f542974 PS |
1096 | mos7840_port->read_urb = port->read_urb; |
1097 | ||
1098 | /* set up our bulk in urb */ | |
093ea2d3 DL |
1099 | if ((serial->num_ports == 2) |
1100 | && ((((__u16)port->number - | |
1101 | (__u16)(port->serial->minor)) % 2) != 0)) { | |
1102 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1103 | serial->dev, | |
1104 | usb_rcvbulkpipe(serial->dev, | |
1105 | (port->bulk_in_endpointAddress) + 2), | |
1106 | port->bulk_in_buffer, | |
1107 | mos7840_port->read_urb->transfer_buffer_length, | |
1108 | mos7840_bulk_in_callback, mos7840_port); | |
1109 | } else { | |
1110 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1111 | serial->dev, | |
1112 | usb_rcvbulkpipe(serial->dev, | |
1113 | port->bulk_in_endpointAddress), | |
1114 | port->bulk_in_buffer, | |
1115 | mos7840_port->read_urb->transfer_buffer_length, | |
1116 | mos7840_bulk_in_callback, mos7840_port); | |
1117 | } | |
3f542974 | 1118 | |
9c134a14 | 1119 | dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
50de36f7 | 1120 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1121 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1122 | if (response) { | |
194343d9 GKH |
1123 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1124 | __func__, response); | |
50de36f7 | 1125 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1126 | } |
1127 | ||
1128 | /* initialize our wait queues */ | |
1129 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1130 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1131 | ||
1132 | /* initialize our icount structure */ | |
1133 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1134 | ||
1135 | /* initialize our port settings */ | |
880af9db AC |
1136 | /* Must set to enable ints! */ |
1137 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1138 | /* send a open port command */ |
1139 | mos7840_port->open = 1; | |
880af9db | 1140 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 PS |
1141 | mos7840_port->icount.tx = 0; |
1142 | mos7840_port->icount.rx = 0; | |
1143 | ||
3f542974 | 1144 | return 0; |
3f542974 PS |
1145 | } |
1146 | ||
1147 | /***************************************************************************** | |
1148 | * mos7840_chars_in_buffer | |
1149 | * this function is called by the tty driver when it wants to know how many | |
1150 | * bytes of data we currently have outstanding in the port (data that has | |
1151 | * been written, but hasn't made it out the port yet) | |
1152 | * If successful, we return the number of bytes left to be written in the | |
1153 | * system, | |
95da310e | 1154 | * Otherwise we return zero. |
3f542974 PS |
1155 | *****************************************************************************/ |
1156 | ||
95da310e | 1157 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1158 | { |
95da310e | 1159 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1160 | int i; |
1161 | int chars = 0; | |
0de9a702 | 1162 | unsigned long flags; |
3f542974 PS |
1163 | struct moschip_port *mos7840_port; |
1164 | ||
9c134a14 | 1165 | if (mos7840_port_paranoia_check(port, __func__)) |
95da310e | 1166 | return 0; |
3f542974 PS |
1167 | |
1168 | mos7840_port = mos7840_get_port_private(port); | |
3363155b | 1169 | if (mos7840_port == NULL) |
95da310e | 1170 | return 0; |
3f542974 | 1171 | |
880af9db | 1172 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
5c263b92 MF |
1173 | for (i = 0; i < NUM_URBS; ++i) { |
1174 | if (mos7840_port->busy[i]) { | |
1175 | struct urb *urb = mos7840_port->write_urb_pool[i]; | |
1176 | chars += urb->transfer_buffer_length; | |
1177 | } | |
1178 | } | |
880af9db | 1179 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
9c134a14 | 1180 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
0de9a702 | 1181 | return chars; |
3f542974 PS |
1182 | |
1183 | } | |
1184 | ||
3f542974 PS |
1185 | /***************************************************************************** |
1186 | * mos7840_close | |
1187 | * this function is called by the tty driver when a port is closed | |
1188 | *****************************************************************************/ | |
1189 | ||
335f8514 | 1190 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1191 | { |
1192 | struct usb_serial *serial; | |
1193 | struct moschip_port *mos7840_port; | |
0de9a702 | 1194 | struct moschip_port *port0; |
3f542974 PS |
1195 | int j; |
1196 | __u16 Data; | |
1197 | ||
9c134a14 | 1198 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1199 | return; |
3f542974 | 1200 | |
441b62c1 | 1201 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1202 | if (!serial) |
3f542974 | 1203 | return; |
3f542974 PS |
1204 | |
1205 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1206 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1207 | |
0de9a702 | 1208 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1209 | return; |
3f542974 PS |
1210 | |
1211 | for (j = 0; j < NUM_URBS; ++j) | |
1212 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1213 | ||
1214 | /* Freeing Write URBs */ | |
1215 | for (j = 0; j < NUM_URBS; ++j) { | |
1216 | if (mos7840_port->write_urb_pool[j]) { | |
1217 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1218 | kfree(mos7840_port->write_urb_pool[j]-> | |
1219 | transfer_buffer); | |
1220 | ||
1221 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1222 | } | |
1223 | } | |
1224 | ||
3f542974 PS |
1225 | /* While closing port, shutdown all bulk read, write * |
1226 | * and interrupt read if they exists */ | |
1227 | if (serial->dev) { | |
3f542974 | 1228 | if (mos7840_port->write_urb) { |
9c134a14 | 1229 | dev_dbg(&port->dev, "%s", "Shutdown bulk write\n"); |
3f542974 PS |
1230 | usb_kill_urb(mos7840_port->write_urb); |
1231 | } | |
3f542974 | 1232 | if (mos7840_port->read_urb) { |
9c134a14 | 1233 | dev_dbg(&port->dev, "%s", "Shutdown bulk read\n"); |
3f542974 | 1234 | usb_kill_urb(mos7840_port->read_urb); |
50de36f7 | 1235 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1236 | } |
1237 | if ((&mos7840_port->control_urb)) { | |
9c134a14 | 1238 | dev_dbg(&port->dev, "%s", "Shutdown control read\n"); |
880af9db | 1239 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
3f542974 PS |
1240 | } |
1241 | } | |
880af9db AC |
1242 | /* if(mos7840_port->ctrl_buf != NULL) */ |
1243 | /* kfree(mos7840_port->ctrl_buf); */ | |
0de9a702 | 1244 | port0->open_ports--; |
9c134a14 | 1245 | dev_dbg(&port->dev, "%s in close%d:in port%d\n", __func__, port0->open_ports, port->number); |
0de9a702 | 1246 | if (port0->open_ports == 0) { |
3f542974 | 1247 | if (serial->port[0]->interrupt_in_urb) { |
9c134a14 | 1248 | dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); |
0de9a702 | 1249 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1250 | } |
1251 | } | |
1252 | ||
1253 | if (mos7840_port->write_urb) { | |
1254 | /* if this urb had a transfer buffer already (old tx) free it */ | |
880af9db | 1255 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
3f542974 | 1256 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1257 | usb_free_urb(mos7840_port->write_urb); |
1258 | } | |
1259 | ||
1260 | Data = 0x0; | |
1261 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1262 | ||
1263 | Data = 0x00; | |
1264 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1265 | ||
1266 | mos7840_port->open = 0; | |
3f542974 PS |
1267 | } |
1268 | ||
1269 | /************************************************************************ | |
1270 | * | |
1271 | * mos7840_block_until_chase_response | |
1272 | * | |
1273 | * This function will block the close until one of the following: | |
1274 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1275 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1276 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1277 | * | |
1278 | ************************************************************************/ | |
1279 | ||
95da310e AC |
1280 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1281 | struct moschip_port *mos7840_port) | |
3f542974 | 1282 | { |
1e658489 | 1283 | int timeout = msecs_to_jiffies(1000); |
3f542974 PS |
1284 | int wait = 10; |
1285 | int count; | |
1286 | ||
1287 | while (1) { | |
95da310e | 1288 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1289 | |
1290 | /* Check for Buffer status */ | |
880af9db | 1291 | if (count <= 0) |
3f542974 | 1292 | return; |
3f542974 PS |
1293 | |
1294 | /* Block the thread for a while */ | |
1295 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1296 | timeout); | |
1297 | /* No activity.. count down section */ | |
1298 | wait--; | |
1299 | if (wait == 0) { | |
9c134a14 | 1300 | dev_dbg(&mos7840_port->port->dev, "%s - TIMEOUT\n", __func__); |
3f542974 PS |
1301 | return; |
1302 | } else { | |
dc0d5c1e | 1303 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1304 | wait = 10; |
1305 | } | |
1306 | } | |
1307 | ||
1308 | } | |
1309 | ||
1310 | /***************************************************************************** | |
1311 | * mos7840_break | |
1312 | * this function sends a break to the port | |
1313 | *****************************************************************************/ | |
95da310e | 1314 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1315 | { |
95da310e | 1316 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1317 | unsigned char data; |
1318 | struct usb_serial *serial; | |
1319 | struct moschip_port *mos7840_port; | |
1320 | ||
9c134a14 | 1321 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1322 | return; |
3f542974 | 1323 | |
441b62c1 | 1324 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1325 | if (!serial) |
3f542974 | 1326 | return; |
3f542974 PS |
1327 | |
1328 | mos7840_port = mos7840_get_port_private(port); | |
1329 | ||
880af9db | 1330 | if (mos7840_port == NULL) |
3f542974 | 1331 | return; |
3f542974 | 1332 | |
95da310e | 1333 | if (serial->dev) |
3f542974 | 1334 | /* flush and block until tx is empty */ |
95da310e | 1335 | mos7840_block_until_chase_response(tty, mos7840_port); |
3f542974 | 1336 | |
95da310e | 1337 | if (break_state == -1) |
3f542974 | 1338 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1339 | else |
3f542974 | 1340 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1341 | |
6b447f04 | 1342 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1343 | mos7840_port->shadowLCR = data; |
9c134a14 | 1344 | dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1345 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
1346 | mos7840_port->shadowLCR); | |
3f542974 PS |
1347 | } |
1348 | ||
1349 | /***************************************************************************** | |
1350 | * mos7840_write_room | |
1351 | * this function is called by the tty driver when it wants to know how many | |
1352 | * bytes of data we can accept for a specific port. | |
1353 | * If successful, we return the amount of room that we have for this port | |
1354 | * Otherwise we return a negative error number. | |
1355 | *****************************************************************************/ | |
1356 | ||
95da310e | 1357 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1358 | { |
95da310e | 1359 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1360 | int i; |
1361 | int room = 0; | |
0de9a702 | 1362 | unsigned long flags; |
3f542974 PS |
1363 | struct moschip_port *mos7840_port; |
1364 | ||
9c134a14 | 1365 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1366 | return -1; |
3f542974 PS |
1367 | |
1368 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1369 | if (mos7840_port == NULL) |
3f542974 | 1370 | return -1; |
3f542974 | 1371 | |
0de9a702 | 1372 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1373 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1374 | if (!mos7840_port->busy[i]) |
3f542974 | 1375 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1376 | } |
0de9a702 | 1377 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1378 | |
0de9a702 | 1379 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
9c134a14 | 1380 | dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
0de9a702 | 1381 | return room; |
3f542974 PS |
1382 | |
1383 | } | |
1384 | ||
1385 | /***************************************************************************** | |
1386 | * mos7840_write | |
1387 | * this function is called by the tty driver when data should be written to | |
1388 | * the port. | |
1389 | * If successful, we return the number of bytes written, otherwise we | |
1390 | * return a negative error number. | |
1391 | *****************************************************************************/ | |
1392 | ||
95da310e | 1393 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1394 | const unsigned char *data, int count) |
1395 | { | |
1396 | int status; | |
1397 | int i; | |
1398 | int bytes_sent = 0; | |
1399 | int transfer_size; | |
0de9a702 | 1400 | unsigned long flags; |
3f542974 PS |
1401 | |
1402 | struct moschip_port *mos7840_port; | |
1403 | struct usb_serial *serial; | |
1404 | struct urb *urb; | |
880af9db | 1405 | /* __u16 Data; */ |
3f542974 PS |
1406 | const unsigned char *current_position = data; |
1407 | unsigned char *data1; | |
3f542974 PS |
1408 | |
1409 | #ifdef NOTMOS7840 | |
1410 | Data = 0x00; | |
3f542974 PS |
1411 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1412 | mos7840_port->shadowLCR = Data; | |
9c134a14 GKH |
1413 | dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data); |
1414 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); | |
3f542974 | 1415 | |
880af9db AC |
1416 | /* Data = 0x03; */ |
1417 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1418 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1419 | |
880af9db | 1420 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1421 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1422 | ||
880af9db AC |
1423 | /* Data = 0x0c; */ |
1424 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1425 | Data = 0x00; |
3f542974 | 1426 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
9c134a14 | 1427 | dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); |
3f542974 PS |
1428 | |
1429 | Data = 0x0; | |
3f542974 | 1430 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
9c134a14 | 1431 | dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data); |
3f542974 PS |
1432 | |
1433 | Data = Data & ~SERIAL_LCR_DLAB; | |
9c134a14 | 1434 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1435 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1436 | #endif | |
1437 | ||
9c134a14 | 1438 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1439 | return -1; |
3f542974 PS |
1440 | |
1441 | serial = port->serial; | |
9c134a14 | 1442 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1443 | return -1; |
3f542974 PS |
1444 | |
1445 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1446 | if (mos7840_port == NULL) |
3f542974 | 1447 | return -1; |
3f542974 PS |
1448 | |
1449 | /* try to find a free urb in the list */ | |
1450 | urb = NULL; | |
1451 | ||
0de9a702 | 1452 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1453 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1454 | if (!mos7840_port->busy[i]) { |
1455 | mos7840_port->busy[i] = 1; | |
3f542974 | 1456 | urb = mos7840_port->write_urb_pool[i]; |
9c134a14 | 1457 | dev_dbg(&port->dev, "URB:%d\n", i); |
3f542974 PS |
1458 | break; |
1459 | } | |
1460 | } | |
0de9a702 | 1461 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1462 | |
1463 | if (urb == NULL) { | |
9c134a14 | 1464 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
3f542974 PS |
1465 | goto exit; |
1466 | } | |
1467 | ||
1468 | if (urb->transfer_buffer == NULL) { | |
1469 | urb->transfer_buffer = | |
1470 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1471 | ||
1472 | if (urb->transfer_buffer == NULL) { | |
22a416c4 | 1473 | dev_err_console(port, "%s no more kernel memory...\n", |
194343d9 | 1474 | __func__); |
3f542974 PS |
1475 | goto exit; |
1476 | } | |
1477 | } | |
1478 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1479 | ||
97c4965d | 1480 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1481 | |
1482 | /* fill urb with data and submit */ | |
093ea2d3 DL |
1483 | if ((serial->num_ports == 2) |
1484 | && ((((__u16)port->number - | |
1485 | (__u16)(port->serial->minor)) % 2) != 0)) { | |
1486 | usb_fill_bulk_urb(urb, | |
1487 | serial->dev, | |
1488 | usb_sndbulkpipe(serial->dev, | |
1489 | (port->bulk_out_endpointAddress) + 2), | |
1490 | urb->transfer_buffer, | |
1491 | transfer_size, | |
1492 | mos7840_bulk_out_data_callback, mos7840_port); | |
1493 | } else { | |
1494 | usb_fill_bulk_urb(urb, | |
1495 | serial->dev, | |
1496 | usb_sndbulkpipe(serial->dev, | |
1497 | port->bulk_out_endpointAddress), | |
1498 | urb->transfer_buffer, | |
1499 | transfer_size, | |
1500 | mos7840_bulk_out_data_callback, mos7840_port); | |
1501 | } | |
3f542974 PS |
1502 | |
1503 | data1 = urb->transfer_buffer; | |
9c134a14 | 1504 | dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
3f542974 | 1505 | |
0eafe4de D |
1506 | /* Turn on LED */ |
1507 | if (mos7840_port->has_led && !mos7840_port->led_flag) { | |
1508 | mos7840_port->led_flag = true; | |
1509 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0301); | |
1510 | mod_timer(&mos7840_port->led_timer1, | |
1511 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
1512 | } | |
1513 | ||
3f542974 PS |
1514 | /* send it down the pipe */ |
1515 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1516 | ||
1517 | if (status) { | |
0de9a702 | 1518 | mos7840_port->busy[i] = 0; |
22a416c4 | 1519 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1520 | "with status = %d\n", __func__, status); |
3f542974 PS |
1521 | bytes_sent = status; |
1522 | goto exit; | |
1523 | } | |
1524 | bytes_sent = transfer_size; | |
1525 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1526 | smp_wmb(); |
9c134a14 | 1527 | dev_dbg(&port->dev, "mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); |
95da310e | 1528 | exit: |
3f542974 PS |
1529 | return bytes_sent; |
1530 | ||
1531 | } | |
1532 | ||
1533 | /***************************************************************************** | |
1534 | * mos7840_throttle | |
1535 | * this function is called by the tty driver when it wants to stop the data | |
1536 | * being read from the port. | |
1537 | *****************************************************************************/ | |
1538 | ||
95da310e | 1539 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1540 | { |
95da310e | 1541 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1542 | struct moschip_port *mos7840_port; |
3f542974 PS |
1543 | int status; |
1544 | ||
9c134a14 | 1545 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1546 | return; |
3f542974 PS |
1547 | |
1548 | mos7840_port = mos7840_get_port_private(port); | |
1549 | ||
1550 | if (mos7840_port == NULL) | |
1551 | return; | |
1552 | ||
1553 | if (!mos7840_port->open) { | |
9c134a14 | 1554 | dev_dbg(&port->dev, "%s", "port not opened\n"); |
3f542974 PS |
1555 | return; |
1556 | } | |
1557 | ||
3f542974 PS |
1558 | /* if we are implementing XON/XOFF, send the stop character */ |
1559 | if (I_IXOFF(tty)) { | |
1560 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1561 | status = mos7840_write(tty, port, &stop_char, 1); |
1562 | if (status <= 0) | |
3f542974 | 1563 | return; |
3f542974 | 1564 | } |
3f542974 | 1565 | /* if we are implementing RTS/CTS, toggle that line */ |
adc8d746 | 1566 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1567 | mos7840_port->shadowMCR &= ~MCR_RTS; |
95da310e | 1568 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1569 | mos7840_port->shadowMCR); |
95da310e | 1570 | if (status < 0) |
3f542974 | 1571 | return; |
3f542974 | 1572 | } |
3f542974 PS |
1573 | } |
1574 | ||
1575 | /***************************************************************************** | |
1576 | * mos7840_unthrottle | |
880af9db AC |
1577 | * this function is called by the tty driver when it wants to resume |
1578 | * the data being read from the port (called after mos7840_throttle is | |
1579 | * called) | |
3f542974 | 1580 | *****************************************************************************/ |
95da310e | 1581 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1582 | { |
95da310e | 1583 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1584 | int status; |
1585 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1586 | ||
9c134a14 | 1587 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1588 | return; |
3f542974 PS |
1589 | |
1590 | if (mos7840_port == NULL) | |
1591 | return; | |
1592 | ||
1593 | if (!mos7840_port->open) { | |
9c134a14 | 1594 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1595 | return; |
1596 | } | |
1597 | ||
3f542974 PS |
1598 | /* if we are implementing XON/XOFF, send the start character */ |
1599 | if (I_IXOFF(tty)) { | |
1600 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1601 | status = mos7840_write(tty, port, &start_char, 1); |
1602 | if (status <= 0) | |
3f542974 | 1603 | return; |
3f542974 PS |
1604 | } |
1605 | ||
1606 | /* if we are implementing RTS/CTS, toggle that line */ | |
adc8d746 | 1607 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1608 | mos7840_port->shadowMCR |= MCR_RTS; |
95da310e | 1609 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1610 | mos7840_port->shadowMCR); |
95da310e | 1611 | if (status < 0) |
3f542974 | 1612 | return; |
3f542974 | 1613 | } |
3f542974 PS |
1614 | } |
1615 | ||
60b33c13 | 1616 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1617 | { |
95da310e | 1618 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1619 | struct moschip_port *mos7840_port; |
1620 | unsigned int result; | |
1621 | __u16 msr; | |
1622 | __u16 mcr; | |
880af9db | 1623 | int status; |
3f542974 PS |
1624 | mos7840_port = mos7840_get_port_private(port); |
1625 | ||
3f542974 PS |
1626 | if (mos7840_port == NULL) |
1627 | return -ENODEV; | |
1628 | ||
1629 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1630 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1631 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1632 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1633 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1634 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1635 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1636 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1637 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1638 | ||
9c134a14 | 1639 | dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
3f542974 PS |
1640 | |
1641 | return result; | |
1642 | } | |
1643 | ||
20b9d177 | 1644 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1645 | unsigned int set, unsigned int clear) |
1646 | { | |
95da310e | 1647 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1648 | struct moschip_port *mos7840_port; |
1649 | unsigned int mcr; | |
87521c46 | 1650 | int status; |
3f542974 | 1651 | |
3f542974 PS |
1652 | mos7840_port = mos7840_get_port_private(port); |
1653 | ||
1654 | if (mos7840_port == NULL) | |
1655 | return -ENODEV; | |
1656 | ||
e2984494 | 1657 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1658 | mcr = mos7840_port->shadowMCR; |
1659 | if (clear & TIOCM_RTS) | |
1660 | mcr &= ~MCR_RTS; | |
1661 | if (clear & TIOCM_DTR) | |
1662 | mcr &= ~MCR_DTR; | |
1663 | if (clear & TIOCM_LOOP) | |
1664 | mcr &= ~MCR_LOOPBACK; | |
1665 | ||
1666 | if (set & TIOCM_RTS) | |
1667 | mcr |= MCR_RTS; | |
1668 | if (set & TIOCM_DTR) | |
1669 | mcr |= MCR_DTR; | |
1670 | if (set & TIOCM_LOOP) | |
1671 | mcr |= MCR_LOOPBACK; | |
1672 | ||
1673 | mos7840_port->shadowMCR = mcr; | |
1674 | ||
3f542974 PS |
1675 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1676 | if (status < 0) { | |
9c134a14 | 1677 | dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
87521c46 | 1678 | return status; |
3f542974 PS |
1679 | } |
1680 | ||
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | /***************************************************************************** | |
1685 | * mos7840_calc_baud_rate_divisor | |
1686 | * this function calculates the proper baud rate divisor for the specified | |
1687 | * baud rate. | |
1688 | *****************************************************************************/ | |
9c134a14 GKH |
1689 | static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
1690 | int baudRate, int *divisor, | |
880af9db | 1691 | __u16 *clk_sel_val) |
3f542974 | 1692 | { |
9c134a14 | 1693 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
3f542974 PS |
1694 | |
1695 | if (baudRate <= 115200) { | |
1696 | *divisor = 115200 / baudRate; | |
1697 | *clk_sel_val = 0x0; | |
1698 | } | |
1699 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1700 | *divisor = 230400 / baudRate; | |
1701 | *clk_sel_val = 0x10; | |
1702 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1703 | *divisor = 403200 / baudRate; | |
1704 | *clk_sel_val = 0x20; | |
1705 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1706 | *divisor = 460800 / baudRate; | |
1707 | *clk_sel_val = 0x30; | |
1708 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1709 | *divisor = 806400 / baudRate; | |
1710 | *clk_sel_val = 0x40; | |
1711 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1712 | *divisor = 921600 / baudRate; | |
1713 | *clk_sel_val = 0x50; | |
1714 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1715 | *divisor = 1572864 / baudRate; | |
1716 | *clk_sel_val = 0x60; | |
1717 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1718 | *divisor = 3145728 / baudRate; | |
1719 | *clk_sel_val = 0x70; | |
1720 | } | |
1721 | return 0; | |
1722 | ||
1723 | #ifdef NOTMCS7840 | |
1724 | ||
1725 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1726 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1727 | *divisor = mos7840_divisor_table[i].Divisor; | |
1728 | return 0; | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | /* After trying for all the standard baud rates * | |
1733 | * Try calculating the divisor for this baud rate */ | |
1734 | ||
1735 | if (baudrate > 75 && baudrate < 230400) { | |
1736 | /* get the divisor */ | |
1737 | custom = (__u16) (230400L / baudrate); | |
1738 | ||
1739 | /* Check for round off */ | |
1740 | round1 = (__u16) (2304000L / baudrate); | |
1741 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1742 | if (round > 4) |
3f542974 | 1743 | custom++; |
3f542974 PS |
1744 | *divisor = custom; |
1745 | ||
9c134a14 | 1746 | dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); |
3f542974 PS |
1747 | return 0; |
1748 | } | |
1749 | ||
9c134a14 | 1750 | dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); |
3f542974 PS |
1751 | return -1; |
1752 | #endif | |
1753 | } | |
1754 | ||
1755 | /***************************************************************************** | |
1756 | * mos7840_send_cmd_write_baud_rate | |
1757 | * this function sends the proper command to change the baud rate of the | |
1758 | * specified port. | |
1759 | *****************************************************************************/ | |
1760 | ||
1761 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1762 | int baudRate) | |
1763 | { | |
1764 | int divisor = 0; | |
1765 | int status; | |
1766 | __u16 Data; | |
1767 | unsigned char number; | |
1768 | __u16 clk_sel_val; | |
1769 | struct usb_serial_port *port; | |
1770 | ||
1771 | if (mos7840_port == NULL) | |
1772 | return -1; | |
1773 | ||
9c134a14 GKH |
1774 | port = mos7840_port->port; |
1775 | if (mos7840_port_paranoia_check(port, __func__)) | |
3f542974 | 1776 | return -1; |
3f542974 | 1777 | |
9c134a14 | 1778 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1779 | return -1; |
3f542974 | 1780 | |
3f542974 PS |
1781 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; |
1782 | ||
9c134a14 GKH |
1783 | dev_dbg(&port->dev, "%s - port = %d, baud = %d\n", __func__, |
1784 | mos7840_port->port->number, baudRate); | |
880af9db | 1785 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1786 | if (baudRate > 115200) { |
1787 | #ifdef HW_flow_control | |
880af9db AC |
1788 | /* NOTE: need to see the pther register to modify */ |
1789 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1790 | Data = 0x2b; |
1791 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1792 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1793 | Data); | |
3f542974 | 1794 | if (status < 0) { |
9c134a14 | 1795 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1796 | return -1; |
1797 | } | |
1798 | #endif | |
1799 | ||
1800 | } else { | |
1801 | #ifdef HW_flow_control | |
093ea2d3 | 1802 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1803 | Data = 0xb; |
1804 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1805 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1806 | Data); | |
3f542974 | 1807 | if (status < 0) { |
9c134a14 | 1808 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1809 | return -1; |
1810 | } | |
1811 | #endif | |
1812 | ||
1813 | } | |
1814 | ||
880af9db | 1815 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1816 | clk_sel_val = 0x0; |
1817 | Data = 0x0; | |
9c134a14 | 1818 | status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
3f542974 | 1819 | &clk_sel_val); |
880af9db AC |
1820 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1821 | &Data); | |
3f542974 | 1822 | if (status < 0) { |
9c134a14 | 1823 | dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
3f542974 PS |
1824 | return -1; |
1825 | } | |
1826 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1827 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1828 | Data); | |
3f542974 | 1829 | if (status < 0) { |
9c134a14 | 1830 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1831 | return -1; |
1832 | } | |
1833 | /* Calculate the Divisor */ | |
1834 | ||
1835 | if (status) { | |
194343d9 | 1836 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1837 | return status; |
1838 | } | |
1839 | /* Enable access to divisor latch */ | |
1840 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1841 | mos7840_port->shadowLCR = Data; | |
1842 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1843 | ||
1844 | /* Write the divisor */ | |
1845 | Data = (unsigned char)(divisor & 0xff); | |
9c134a14 | 1846 | dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
3f542974 PS |
1847 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1848 | ||
1849 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
9c134a14 | 1850 | dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
3f542974 PS |
1851 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1852 | ||
1853 | /* Disable access to divisor latch */ | |
1854 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1855 | mos7840_port->shadowLCR = Data; | |
1856 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1857 | ||
1858 | } | |
3f542974 PS |
1859 | return status; |
1860 | } | |
1861 | ||
1862 | /***************************************************************************** | |
1863 | * mos7840_change_port_settings | |
1864 | * This routine is called to set the UART on the device to match | |
1865 | * the specified new settings. | |
1866 | *****************************************************************************/ | |
1867 | ||
95da310e AC |
1868 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1869 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1870 | { |
3f542974 PS |
1871 | int baud; |
1872 | unsigned cflag; | |
1873 | unsigned iflag; | |
1874 | __u8 lData; | |
1875 | __u8 lParity; | |
1876 | __u8 lStop; | |
1877 | int status; | |
1878 | __u16 Data; | |
1879 | struct usb_serial_port *port; | |
1880 | struct usb_serial *serial; | |
1881 | ||
1882 | if (mos7840_port == NULL) | |
1883 | return; | |
1884 | ||
9c134a14 | 1885 | port = mos7840_port->port; |
3f542974 | 1886 | |
9c134a14 | 1887 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1888 | return; |
3f542974 | 1889 | |
9c134a14 | 1890 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1891 | return; |
3f542974 PS |
1892 | |
1893 | serial = port->serial; | |
1894 | ||
3f542974 | 1895 | if (!mos7840_port->open) { |
9c134a14 | 1896 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1897 | return; |
1898 | } | |
1899 | ||
3f542974 PS |
1900 | lData = LCR_BITS_8; |
1901 | lStop = LCR_STOP_1; | |
1902 | lParity = LCR_PAR_NONE; | |
1903 | ||
adc8d746 AC |
1904 | cflag = tty->termios.c_cflag; |
1905 | iflag = tty->termios.c_iflag; | |
3f542974 PS |
1906 | |
1907 | /* Change the number of bits */ | |
1908 | if (cflag & CSIZE) { | |
1909 | switch (cflag & CSIZE) { | |
1910 | case CS5: | |
1911 | lData = LCR_BITS_5; | |
1912 | break; | |
1913 | ||
1914 | case CS6: | |
1915 | lData = LCR_BITS_6; | |
1916 | break; | |
1917 | ||
1918 | case CS7: | |
1919 | lData = LCR_BITS_7; | |
1920 | break; | |
1921 | default: | |
1922 | case CS8: | |
1923 | lData = LCR_BITS_8; | |
1924 | break; | |
1925 | } | |
1926 | } | |
1927 | /* Change the Parity bit */ | |
1928 | if (cflag & PARENB) { | |
1929 | if (cflag & PARODD) { | |
1930 | lParity = LCR_PAR_ODD; | |
9c134a14 | 1931 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
3f542974 PS |
1932 | } else { |
1933 | lParity = LCR_PAR_EVEN; | |
9c134a14 | 1934 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
3f542974 PS |
1935 | } |
1936 | ||
1937 | } else { | |
9c134a14 | 1938 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
3f542974 PS |
1939 | } |
1940 | ||
880af9db | 1941 | if (cflag & CMSPAR) |
3f542974 | 1942 | lParity = lParity | 0x20; |
3f542974 PS |
1943 | |
1944 | /* Change the Stop bit */ | |
1945 | if (cflag & CSTOPB) { | |
1946 | lStop = LCR_STOP_2; | |
9c134a14 | 1947 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
3f542974 PS |
1948 | } else { |
1949 | lStop = LCR_STOP_1; | |
9c134a14 | 1950 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
3f542974 PS |
1951 | } |
1952 | ||
1953 | /* Update the LCR with the correct value */ | |
1954 | mos7840_port->shadowLCR &= | |
1955 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1956 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1957 | ||
9c134a14 GKH |
1958 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
1959 | mos7840_port->shadowLCR); | |
3f542974 PS |
1960 | /* Disable Interrupts */ |
1961 | Data = 0x00; | |
1962 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1963 | ||
1964 | Data = 0x00; | |
1965 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1966 | ||
1967 | Data = 0xcf; | |
1968 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1969 | ||
1970 | /* Send the updated LCR value to the mos7840 */ | |
1971 | Data = mos7840_port->shadowLCR; | |
1972 | ||
1973 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1974 | ||
1975 | Data = 0x00b; | |
1976 | mos7840_port->shadowMCR = Data; | |
1977 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1978 | Data = 0x00b; | |
1979 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1980 | ||
1981 | /* set up the MCR register and send it to the mos7840 */ | |
1982 | ||
1983 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 1984 | if (cflag & CBAUD) |
3f542974 | 1985 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 1986 | |
880af9db | 1987 | if (cflag & CRTSCTS) |
3f542974 | 1988 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 1989 | else |
3f542974 | 1990 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
1991 | |
1992 | Data = mos7840_port->shadowMCR; | |
1993 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1994 | ||
1995 | /* Determine divisor based on baud rate */ | |
1996 | baud = tty_get_baud_rate(tty); | |
1997 | ||
1998 | if (!baud) { | |
1999 | /* pick a default, any default... */ | |
9c134a14 | 2000 | dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
3f542974 PS |
2001 | baud = 9600; |
2002 | } | |
2003 | ||
9c134a14 | 2004 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
3f542974 PS |
2005 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2006 | ||
2007 | /* Enable Interrupts */ | |
2008 | Data = 0x0c; | |
2009 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2010 | ||
50de36f7 | 2011 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2012 | mos7840_port->read_urb_busy = true; |
3f542974 | 2013 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 2014 | if (status) { |
9c134a14 | 2015 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 2016 | status); |
50de36f7 | 2017 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2018 | } |
2019 | } | |
2020 | wake_up(&mos7840_port->delta_msr_wait); | |
2021 | mos7840_port->delta_msr_cond = 1; | |
9c134a14 GKH |
2022 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
2023 | mos7840_port->shadowLCR); | |
3f542974 PS |
2024 | } |
2025 | ||
2026 | /***************************************************************************** | |
2027 | * mos7840_set_termios | |
2028 | * this function is called by the tty driver when it wants to change | |
2029 | * the termios structure | |
2030 | *****************************************************************************/ | |
2031 | ||
95da310e AC |
2032 | static void mos7840_set_termios(struct tty_struct *tty, |
2033 | struct usb_serial_port *port, | |
606d099c | 2034 | struct ktermios *old_termios) |
3f542974 PS |
2035 | { |
2036 | int status; | |
2037 | unsigned int cflag; | |
2038 | struct usb_serial *serial; | |
2039 | struct moschip_port *mos7840_port; | |
3363155b | 2040 | |
9c134a14 | 2041 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 2042 | return; |
3f542974 PS |
2043 | |
2044 | serial = port->serial; | |
2045 | ||
9c134a14 | 2046 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 2047 | return; |
3f542974 PS |
2048 | |
2049 | mos7840_port = mos7840_get_port_private(port); | |
2050 | ||
2051 | if (mos7840_port == NULL) | |
2052 | return; | |
2053 | ||
3f542974 | 2054 | if (!mos7840_port->open) { |
9c134a14 | 2055 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
2056 | return; |
2057 | } | |
2058 | ||
9c134a14 | 2059 | dev_dbg(&port->dev, "%s", "setting termios - \n"); |
3f542974 | 2060 | |
adc8d746 | 2061 | cflag = tty->termios.c_cflag; |
3f542974 | 2062 | |
9c134a14 | 2063 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, |
d9a80746 | 2064 | tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); |
9c134a14 GKH |
2065 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, |
2066 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); | |
2067 | dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); | |
3f542974 PS |
2068 | |
2069 | /* change the port settings to the new ones specified */ | |
2070 | ||
95da310e | 2071 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2072 | |
2073 | if (!mos7840_port->read_urb) { | |
9c134a14 | 2074 | dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); |
3f542974 PS |
2075 | return; |
2076 | } | |
2077 | ||
50de36f7 | 2078 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2079 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2080 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2081 | if (status) { | |
9c134a14 | 2082 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 2083 | status); |
50de36f7 | 2084 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2085 | } |
2086 | } | |
3f542974 PS |
2087 | } |
2088 | ||
2089 | /***************************************************************************** | |
2090 | * mos7840_get_lsr_info - get line status register info | |
2091 | * | |
2092 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2093 | * is emptied. On bus types like RS485, the transmitter must | |
2094 | * release the bus after transmitting. This must be done when | |
2095 | * the transmit shift register is empty, not be done when the | |
2096 | * transmit holding register is empty. This functionality | |
2097 | * allows an RS485 driver to be written in user space. | |
2098 | *****************************************************************************/ | |
2099 | ||
95da310e | 2100 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2101 | unsigned int __user *value) |
3f542974 PS |
2102 | { |
2103 | int count; | |
2104 | unsigned int result = 0; | |
2105 | ||
95da310e | 2106 | count = mos7840_chars_in_buffer(tty); |
9c134a14 | 2107 | if (count == 0) |
3f542974 | 2108 | result = TIOCSER_TEMT; |
3f542974 PS |
2109 | |
2110 | if (copy_to_user(value, &result, sizeof(int))) | |
2111 | return -EFAULT; | |
2112 | return 0; | |
2113 | } | |
2114 | ||
3f542974 PS |
2115 | /***************************************************************************** |
2116 | * mos7840_get_serial_info | |
2117 | * function to get information about serial port | |
2118 | *****************************************************************************/ | |
2119 | ||
2120 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2121 | struct serial_struct __user *retinfo) |
3f542974 PS |
2122 | { |
2123 | struct serial_struct tmp; | |
2124 | ||
2125 | if (mos7840_port == NULL) | |
2126 | return -1; | |
2127 | ||
2128 | if (!retinfo) | |
2129 | return -EFAULT; | |
2130 | ||
2131 | memset(&tmp, 0, sizeof(tmp)); | |
2132 | ||
2133 | tmp.type = PORT_16550A; | |
2134 | tmp.line = mos7840_port->port->serial->minor; | |
2135 | tmp.port = mos7840_port->port->number; | |
2136 | tmp.irq = 0; | |
2137 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2138 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2139 | tmp.baud_base = 9600; | |
2140 | tmp.close_delay = 5 * HZ; | |
2141 | tmp.closing_wait = 30 * HZ; | |
2142 | ||
2143 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2144 | return -EFAULT; | |
2145 | return 0; | |
2146 | } | |
2147 | ||
0bca1b91 AC |
2148 | static int mos7840_get_icount(struct tty_struct *tty, |
2149 | struct serial_icounter_struct *icount) | |
2150 | { | |
2151 | struct usb_serial_port *port = tty->driver_data; | |
2152 | struct moschip_port *mos7840_port; | |
2153 | struct async_icount cnow; | |
2154 | ||
2155 | mos7840_port = mos7840_get_port_private(port); | |
2156 | cnow = mos7840_port->icount; | |
2157 | ||
2158 | smp_rmb(); | |
2159 | icount->cts = cnow.cts; | |
2160 | icount->dsr = cnow.dsr; | |
2161 | icount->rng = cnow.rng; | |
2162 | icount->dcd = cnow.dcd; | |
2163 | icount->rx = cnow.rx; | |
2164 | icount->tx = cnow.tx; | |
2165 | icount->frame = cnow.frame; | |
2166 | icount->overrun = cnow.overrun; | |
2167 | icount->parity = cnow.parity; | |
2168 | icount->brk = cnow.brk; | |
2169 | icount->buf_overrun = cnow.buf_overrun; | |
2170 | ||
9c134a14 GKH |
2171 | dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n", __func__, |
2172 | icount->rx, icount->tx); | |
0bca1b91 AC |
2173 | return 0; |
2174 | } | |
2175 | ||
3f542974 PS |
2176 | /***************************************************************************** |
2177 | * SerialIoctl | |
2178 | * this function handles any ioctl calls to the driver | |
2179 | *****************************************************************************/ | |
2180 | ||
00a0d0d6 | 2181 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
2182 | unsigned int cmd, unsigned long arg) |
2183 | { | |
95da310e | 2184 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2185 | void __user *argp = (void __user *)arg; |
3f542974 | 2186 | struct moschip_port *mos7840_port; |
3f542974 PS |
2187 | |
2188 | struct async_icount cnow; | |
2189 | struct async_icount cprev; | |
3f542974 | 2190 | |
9c134a14 | 2191 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 2192 | return -1; |
3f542974 PS |
2193 | |
2194 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2195 | |
2196 | if (mos7840_port == NULL) | |
2197 | return -1; | |
2198 | ||
9c134a14 | 2199 | dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); |
3f542974 PS |
2200 | |
2201 | switch (cmd) { | |
2202 | /* return number of bytes available */ | |
2203 | ||
3f542974 | 2204 | case TIOCSERGETLSR: |
9c134a14 | 2205 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
95da310e | 2206 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 2207 | |
3f542974 | 2208 | case TIOCGSERIAL: |
9c134a14 | 2209 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
97c4965d | 2210 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2211 | |
2212 | case TIOCSSERIAL: | |
9c134a14 | 2213 | dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); |
3f542974 PS |
2214 | break; |
2215 | ||
2216 | case TIOCMIWAIT: | |
9c134a14 | 2217 | dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__); |
3f542974 PS |
2218 | cprev = mos7840_port->icount; |
2219 | while (1) { | |
880af9db | 2220 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
3f542974 PS |
2221 | mos7840_port->delta_msr_cond = 0; |
2222 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2223 | (mos7840_port-> | |
2224 | delta_msr_cond == 1)); | |
2225 | ||
2226 | /* see if a signal did it */ | |
2227 | if (signal_pending(current)) | |
2228 | return -ERESTARTSYS; | |
2229 | cnow = mos7840_port->icount; | |
0de9a702 | 2230 | smp_rmb(); |
3f542974 PS |
2231 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2232 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2233 | return -EIO; /* no change => error */ | |
2234 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2235 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2236 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2237 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2238 | return 0; | |
2239 | } | |
2240 | cprev = cnow; | |
2241 | } | |
2242 | /* NOTREACHED */ | |
2243 | break; | |
2244 | ||
3f542974 PS |
2245 | default: |
2246 | break; | |
2247 | } | |
3f542974 PS |
2248 | return -ENOIOCTLCMD; |
2249 | } | |
2250 | ||
0eafe4de D |
2251 | static int mos7810_check(struct usb_serial *serial) |
2252 | { | |
2253 | int i, pass_count = 0; | |
2254 | __u16 data = 0, mcr_data = 0; | |
2255 | __u16 test_pattern = 0x55AA; | |
2256 | ||
2257 | /* Store MCR setting */ | |
2258 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
2259 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, | |
2260 | &mcr_data, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2261 | ||
2262 | for (i = 0; i < 16; i++) { | |
2263 | /* Send the 1-bit test pattern out to MCS7810 test pin */ | |
2264 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2265 | MCS_WRREQ, MCS_WR_RTYPE, | |
2266 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), | |
2267 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); | |
2268 | ||
2269 | /* Read the test pattern back */ | |
2270 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
2271 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, | |
2272 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2273 | ||
2274 | /* If this is a MCS7810 device, both test patterns must match */ | |
2275 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) | |
2276 | break; | |
2277 | ||
2278 | pass_count++; | |
2279 | } | |
2280 | ||
2281 | /* Restore MCR setting */ | |
2282 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, | |
2283 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, | |
2284 | 0, MOS_WDR_TIMEOUT); | |
2285 | ||
2286 | if (pass_count == 16) | |
2287 | return 1; | |
2288 | ||
2289 | return 0; | |
2290 | } | |
2291 | ||
3f542974 PS |
2292 | static int mos7840_calc_num_ports(struct usb_serial *serial) |
2293 | { | |
0eafe4de | 2294 | __u16 data = 0x00; |
093ea2d3 DL |
2295 | int mos7840_num_ports; |
2296 | ||
0eafe4de D |
2297 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
2298 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, | |
093ea2d3 DL |
2299 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
2300 | ||
0eafe4de D |
2301 | if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 || |
2302 | serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) { | |
2303 | device_type = serial->dev->descriptor.idProduct; | |
093ea2d3 | 2304 | } else { |
0eafe4de D |
2305 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
2306 | if ((data & 0x01) == 1) | |
2307 | device_type = MOSCHIP_DEVICE_ID_7840; | |
2308 | else if (mos7810_check(serial)) | |
2309 | device_type = MOSCHIP_DEVICE_ID_7810; | |
2310 | else | |
2311 | device_type = MOSCHIP_DEVICE_ID_7820; | |
3f542974 | 2312 | } |
093ea2d3 | 2313 | |
0eafe4de D |
2314 | mos7840_num_ports = (device_type >> 4) & 0x000F; |
2315 | serial->num_bulk_in = mos7840_num_ports; | |
2316 | serial->num_bulk_out = mos7840_num_ports; | |
2317 | serial->num_ports = mos7840_num_ports; | |
2318 | ||
3f542974 PS |
2319 | return mos7840_num_ports; |
2320 | } | |
2321 | ||
80c00750 | 2322 | static int mos7840_port_probe(struct usb_serial_port *port) |
3f542974 | 2323 | { |
80c00750 | 2324 | struct usb_serial *serial = port->serial; |
3f542974 | 2325 | struct moschip_port *mos7840_port; |
80c00750 JH |
2326 | int status; |
2327 | int pnum; | |
3f542974 | 2328 | __u16 Data; |
3f542974 | 2329 | |
3f542974 PS |
2330 | /* we set up the pointers to the endpoints in the mos7840_open * |
2331 | * function, as the structures aren't created yet. */ | |
2332 | ||
80c00750 JH |
2333 | pnum = port->number - serial->minor; |
2334 | ||
ae685eff JH |
2335 | dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); |
2336 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
2337 | if (mos7840_port == NULL) { | |
2338 | dev_err(&port->dev, "%s - Out of memory\n", __func__); | |
2339 | return -ENOMEM; | |
2340 | } | |
3f542974 | 2341 | |
ae685eff JH |
2342 | /* Initialize all port interrupt end point to port 0 int |
2343 | * endpoint. Our device has only one interrupt end point | |
2344 | * common to all port */ | |
2345 | ||
2346 | mos7840_port->port = port; | |
2347 | mos7840_set_port_private(port, mos7840_port); | |
2348 | spin_lock_init(&mos7840_port->pool_lock); | |
2349 | ||
2350 | /* minor is not initialised until later by | |
2351 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2352 | * to index device instances */ | |
2353 | mos7840_port->port_num = pnum + 1; | |
2354 | dev_dbg(&port->dev, "port->number = %d\n", port->number); | |
2355 | dev_dbg(&port->dev, "port->serial->minor = %d\n", port->serial->minor); | |
2356 | dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); | |
2357 | dev_dbg(&port->dev, "serial->minor = %d\n", serial->minor); | |
2358 | ||
2359 | if (mos7840_port->port_num == 1) { | |
2360 | mos7840_port->SpRegOffset = 0x0; | |
2361 | mos7840_port->ControlRegOffset = 0x1; | |
2362 | mos7840_port->DcrRegOffset = 0x4; | |
2363 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { | |
2364 | mos7840_port->SpRegOffset = 0x8; | |
2365 | mos7840_port->ControlRegOffset = 0x9; | |
2366 | mos7840_port->DcrRegOffset = 0x16; | |
2367 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { | |
2368 | mos7840_port->SpRegOffset = 0xa; | |
2369 | mos7840_port->ControlRegOffset = 0xb; | |
2370 | mos7840_port->DcrRegOffset = 0x19; | |
2371 | } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { | |
2372 | mos7840_port->SpRegOffset = 0xa; | |
2373 | mos7840_port->ControlRegOffset = 0xb; | |
2374 | mos7840_port->DcrRegOffset = 0x19; | |
2375 | } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { | |
2376 | mos7840_port->SpRegOffset = 0xc; | |
2377 | mos7840_port->ControlRegOffset = 0xd; | |
2378 | mos7840_port->DcrRegOffset = 0x1c; | |
2379 | } | |
2380 | mos7840_dump_serial_port(port, mos7840_port); | |
2381 | mos7840_set_port_private(port, mos7840_port); | |
2382 | ||
2383 | /* enable rx_disable bit in control register */ | |
2384 | status = mos7840_get_reg_sync(port, | |
2385 | mos7840_port->ControlRegOffset, &Data); | |
2386 | if (status < 0) { | |
2387 | dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); | |
2388 | goto out; | |
2389 | } else | |
2390 | dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); | |
2391 | Data |= 0x08; /* setting driver done bit */ | |
2392 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2393 | modem status reg */ | |
2394 | ||
2395 | /* Data |= 0x20; //rx_disable bit */ | |
2396 | status = mos7840_set_reg_sync(port, | |
2397 | mos7840_port->ControlRegOffset, Data); | |
2398 | if (status < 0) { | |
2399 | dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2400 | goto out; | |
2401 | } else | |
2402 | dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); | |
2403 | ||
2404 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 | |
2405 | and 0x24 in DCR3 */ | |
2406 | Data = 0x01; | |
2407 | status = mos7840_set_reg_sync(port, | |
2408 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
2409 | if (status < 0) { | |
2410 | dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); | |
2411 | goto out; | |
2412 | } else | |
2413 | dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); | |
3f542974 | 2414 | |
ae685eff JH |
2415 | Data = 0x05; |
2416 | status = mos7840_set_reg_sync(port, | |
2417 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
2418 | if (status < 0) { | |
2419 | dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); | |
2420 | goto out; | |
2421 | } else | |
2422 | dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); | |
3f542974 | 2423 | |
ae685eff JH |
2424 | Data = 0x24; |
2425 | status = mos7840_set_reg_sync(port, | |
2426 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
2427 | if (status < 0) { | |
2428 | dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); | |
2429 | goto out; | |
2430 | } else | |
2431 | dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); | |
3f542974 | 2432 | |
ae685eff JH |
2433 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
2434 | Data = 0x0; | |
2435 | status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); | |
2436 | if (status < 0) { | |
2437 | dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2438 | goto out; | |
2439 | } else | |
2440 | dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
3f542974 | 2441 | |
ae685eff JH |
2442 | Data = 0x20; |
2443 | status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); | |
2444 | if (status < 0) { | |
2445 | dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); | |
2446 | goto error; | |
2447 | } else | |
2448 | dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); | |
3f542974 | 2449 | |
ae685eff JH |
2450 | /* write value 0x0 to scratchpad register */ |
2451 | Data = 0x00; | |
2452 | status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); | |
2453 | if (status < 0) { | |
2454 | dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); | |
2455 | goto out; | |
2456 | } else | |
2457 | dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); | |
2458 | ||
2459 | /* Zero Length flag register */ | |
2460 | if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { | |
2461 | Data = 0xff; | |
80c00750 | 2462 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2463 | (__u16) (ZLP_REG1 + |
2464 | ((__u16)mos7840_port->port_num)), Data); | |
2465 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2466 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); | |
3f542974 | 2467 | if (status < 0) { |
ae685eff JH |
2468 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); |
2469 | goto out; | |
3f542974 | 2470 | } else |
ae685eff JH |
2471 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); |
2472 | } else { | |
2473 | Data = 0xff; | |
80c00750 | 2474 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2475 | (__u16) (ZLP_REG1 + |
2476 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
2477 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2478 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); | |
3f542974 | 2479 | if (status < 0) { |
ae685eff JH |
2480 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); |
2481 | goto out; | |
3f542974 | 2482 | } else |
ae685eff | 2483 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); |
3f542974 | 2484 | |
ae685eff JH |
2485 | } |
2486 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2487 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); | |
2488 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), | |
2489 | GFP_KERNEL); | |
2490 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2491 | !mos7840_port->dr) { | |
2492 | status = -ENOMEM; | |
2493 | goto error; | |
2494 | } | |
0eafe4de | 2495 | |
ae685eff | 2496 | mos7840_port->has_led = false; |
0eafe4de | 2497 | |
ae685eff JH |
2498 | /* Initialize LED timers */ |
2499 | if (device_type == MOSCHIP_DEVICE_ID_7810) { | |
2500 | mos7840_port->has_led = true; | |
0eafe4de | 2501 | |
ae685eff JH |
2502 | init_timer(&mos7840_port->led_timer1); |
2503 | mos7840_port->led_timer1.function = mos7840_led_off; | |
2504 | mos7840_port->led_timer1.expires = | |
2505 | jiffies + msecs_to_jiffies(LED_ON_MS); | |
2506 | mos7840_port->led_timer1.data = (unsigned long)mos7840_port; | |
0eafe4de | 2507 | |
ae685eff JH |
2508 | init_timer(&mos7840_port->led_timer2); |
2509 | mos7840_port->led_timer2.function = mos7840_led_flag_off; | |
2510 | mos7840_port->led_timer2.expires = | |
2511 | jiffies + msecs_to_jiffies(LED_OFF_MS); | |
2512 | mos7840_port->led_timer2.data = (unsigned long)mos7840_port; | |
0eafe4de | 2513 | |
ae685eff | 2514 | mos7840_port->led_flag = false; |
3f542974 | 2515 | |
ae685eff JH |
2516 | /* Turn off LED */ |
2517 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
2518 | } | |
2519 | out: | |
80c00750 JH |
2520 | if (pnum == serial->num_ports - 1) { |
2521 | /* Zero Length flag enable */ | |
2522 | Data = 0x0f; | |
2523 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); | |
2524 | if (status < 0) { | |
2525 | dev_dbg(&port->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); | |
2526 | goto error; | |
2527 | } else | |
2528 | dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); | |
2529 | ||
2530 | /* setting configuration feature to one */ | |
2531 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2532 | 0x03, 0x00, 0x01, 0x00, NULL, 0x00, | |
2533 | MOS_WDR_TIMEOUT); | |
2534 | } | |
3f542974 | 2535 | return 0; |
0de9a702 | 2536 | error: |
80c00750 JH |
2537 | kfree(mos7840_port->dr); |
2538 | kfree(mos7840_port->ctrl_buf); | |
2539 | usb_free_urb(mos7840_port->control_urb); | |
2540 | kfree(mos7840_port); | |
0de9a702 | 2541 | |
0de9a702 | 2542 | return status; |
3f542974 PS |
2543 | } |
2544 | ||
80c00750 | 2545 | static int mos7840_port_remove(struct usb_serial_port *port) |
3f542974 | 2546 | { |
3f542974 | 2547 | struct moschip_port *mos7840_port; |
3f542974 | 2548 | |
80c00750 | 2549 | mos7840_port = mos7840_get_port_private(port); |
3f542974 | 2550 | |
80c00750 JH |
2551 | if (mos7840_port->has_led) { |
2552 | /* Turn off LED */ | |
2553 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
3f542974 | 2554 | |
80c00750 JH |
2555 | del_timer_sync(&mos7840_port->led_timer1); |
2556 | del_timer_sync(&mos7840_port->led_timer2); | |
f9c99bb8 | 2557 | } |
80c00750 JH |
2558 | usb_kill_urb(mos7840_port->control_urb); |
2559 | usb_free_urb(mos7840_port->control_urb); | |
2560 | kfree(mos7840_port->ctrl_buf); | |
2561 | kfree(mos7840_port->dr); | |
2562 | kfree(mos7840_port); | |
f9c99bb8 | 2563 | |
80c00750 | 2564 | return 0; |
3f542974 PS |
2565 | } |
2566 | ||
2567 | static struct usb_serial_driver moschip7840_4port_device = { | |
2568 | .driver = { | |
2569 | .owner = THIS_MODULE, | |
2570 | .name = "mos7840", | |
2571 | }, | |
2572 | .description = DRIVER_DESC, | |
68e24113 | 2573 | .id_table = id_table, |
3f542974 | 2574 | .num_ports = 4, |
3f542974 PS |
2575 | .open = mos7840_open, |
2576 | .close = mos7840_close, | |
2577 | .write = mos7840_write, | |
2578 | .write_room = mos7840_write_room, | |
2579 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2580 | .throttle = mos7840_throttle, | |
2581 | .unthrottle = mos7840_unthrottle, | |
2582 | .calc_num_ports = mos7840_calc_num_ports, | |
2583 | #ifdef MCSSerialProbe | |
2584 | .probe = mos7840_serial_probe, | |
2585 | #endif | |
2586 | .ioctl = mos7840_ioctl, | |
2587 | .set_termios = mos7840_set_termios, | |
2588 | .break_ctl = mos7840_break, | |
2589 | .tiocmget = mos7840_tiocmget, | |
2590 | .tiocmset = mos7840_tiocmset, | |
0bca1b91 | 2591 | .get_icount = mos7840_get_icount, |
80c00750 JH |
2592 | .port_probe = mos7840_port_probe, |
2593 | .port_remove = mos7840_port_remove, | |
3f542974 PS |
2594 | .read_bulk_callback = mos7840_bulk_in_callback, |
2595 | .read_int_callback = mos7840_interrupt_callback, | |
2596 | }; | |
2597 | ||
4d2a7aff AS |
2598 | static struct usb_serial_driver * const serial_drivers[] = { |
2599 | &moschip7840_4port_device, NULL | |
2600 | }; | |
2601 | ||
68e24113 | 2602 | module_usb_serial_driver(serial_drivers, id_table); |
3f542974 | 2603 | |
3f542974 PS |
2604 | MODULE_DESCRIPTION(DRIVER_DESC); |
2605 | MODULE_LICENSE("GPL"); |