···4242#define MCT_U232_SET_REQUEST_TYPE 0x404343#define MCT_U232_GET_REQUEST_TYPE 0xc044444545-#define MCT_U232_GET_MODEM_STAT_REQUEST 2 /* Get Modem Status Register (MSR) */4646-#define MCT_U232_GET_MODEM_STAT_SIZE 14545+/* Get Modem Status Register (MSR) */4646+#define MCT_U232_GET_MODEM_STAT_REQUEST 24747+#define MCT_U232_GET_MODEM_STAT_SIZE 147484848-#define MCT_U232_GET_LINE_CTRL_REQUEST 6 /* Get Line Control Register (LCR) */4949-#define MCT_U232_GET_LINE_CTRL_SIZE 1 /* ... not used by this driver */4949+/* Get Line Control Register (LCR) */5050+/* ... not used by this driver */5151+#define MCT_U232_GET_LINE_CTRL_REQUEST 65252+#define MCT_U232_GET_LINE_CTRL_SIZE 150535151-#define MCT_U232_SET_BAUD_RATE_REQUEST 5 /* Set Baud Rate Divisor */5252-#define MCT_U232_SET_BAUD_RATE_SIZE 45454+/* Set Baud Rate Divisor */5555+#define MCT_U232_SET_BAUD_RATE_REQUEST 55656+#define MCT_U232_SET_BAUD_RATE_SIZE 453575454-#define MCT_U232_SET_LINE_CTRL_REQUEST 7 /* Set Line Control Register (LCR) */5555-#define MCT_U232_SET_LINE_CTRL_SIZE 15858+/* Set Line Control Register (LCR) */5959+#define MCT_U232_SET_LINE_CTRL_REQUEST 76060+#define MCT_U232_SET_LINE_CTRL_SIZE 156615757-#define MCT_U232_SET_MODEM_CTRL_REQUEST 10 /* Set Modem Control Register (MCR) */5858-#define MCT_U232_SET_MODEM_CTRL_SIZE 16262+/* Set Modem Control Register (MCR) */6363+#define MCT_U232_SET_MODEM_CTRL_REQUEST 106464+#define MCT_U232_SET_MODEM_CTRL_SIZE 159656060-/* This USB device request code is not well understood. It is transmitted by6161- the MCT-supplied Windows driver whenever the baud rate changes. 6262-*/6363-#define MCT_U232_SET_UNKNOWN1_REQUEST 11 /* Unknown functionality */6464-#define MCT_U232_SET_UNKNOWN1_SIZE 16666+/*6767+ * This USB device request code is not well understood. It is transmitted by6868+ * the MCT-supplied Windows driver whenever the baud rate changes.6969+ */7070+#define MCT_U232_SET_UNKNOWN1_REQUEST 11 /* Unknown functionality */7171+#define MCT_U232_SET_UNKNOWN1_SIZE 165726666-/* This USB device request code appears to control whether CTS is required6767- during transmission.6868-6969- Sending a zero byte allows data transmission to a device which is not7070- asserting CTS. Sending a '1' byte will cause transmission to be deferred7171- until the device asserts CTS.7272-*/7373-#define MCT_U232_SET_CTS_REQUEST 127474-#define MCT_U232_SET_CTS_SIZE 17373+/*7474+ * This USB device request code appears to control whether CTS is required7575+ * during transmission.7676+ *7777+ * Sending a zero byte allows data transmission to a device which is not7878+ * asserting CTS. Sending a '1' byte will cause transmission to be deferred7979+ * until the device asserts CTS.8080+ */8181+#define MCT_U232_SET_CTS_REQUEST 128282+#define MCT_U232_SET_CTS_SIZE 175837684#define MCT_U232_MAX_SIZE 4 /* of MCT_XXX_SIZE */7785···8981 * and "Intel solution". They are the regular MCT and "Sitecom" for us.9082 * This is pointless to document in the header, see the code for the bits.9183 */9292-static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value, speed_t *result);8484+static int mct_u232_calculate_baud_rate(struct usb_serial *serial,8585+ speed_t value, speed_t *result);93869487/*9588 * Line Control Register (LCR)···134125/*135126 * Line Status Register (LSR)136127 */137137-#define MCT_U232_LSR_INDEX 1 /* data[index] */138138-#define MCT_U232_LSR_ERR 0x80 /* OE | PE | FE | BI */139139-#define MCT_U232_LSR_TEMT 0x40 /* transmit register empty */140140-#define MCT_U232_LSR_THRE 0x20 /* transmit holding register empty */141141-#define MCT_U232_LSR_BI 0x10 /* break indicator */142142-#define MCT_U232_LSR_FE 0x08 /* framing error */143143-#define MCT_U232_LSR_OE 0x02 /* overrun error */144144-#define MCT_U232_LSR_PE 0x04 /* parity error */145145-#define MCT_U232_LSR_OE 0x02 /* overrun error */146146-#define MCT_U232_LSR_DR 0x01 /* receive data ready */128128+#define MCT_U232_LSR_INDEX 1 /* data[index] */129129+#define MCT_U232_LSR_ERR 0x80 /* OE | PE | FE | BI */130130+#define MCT_U232_LSR_TEMT 0x40 /* transmit register empty */131131+#define MCT_U232_LSR_THRE 0x20 /* transmit holding register empty */132132+#define MCT_U232_LSR_BI 0x10 /* break indicator */133133+#define MCT_U232_LSR_FE 0x08 /* framing error */134134+#define MCT_U232_LSR_OE 0x02 /* overrun error */135135+#define MCT_U232_LSR_PE 0x04 /* parity error */136136+#define MCT_U232_LSR_OE 0x02 /* overrun error */137137+#define MCT_U232_LSR_DR 0x01 /* receive data ready */147138148139149140/* -----------------------------------------------------------------------------···152143 *153144 * The technical details of the device have been acquired be using "SniffUSB"154145 * and the vendor-supplied device driver (version 2.3A) under Windows98. To155155- * identify the USB vendor-specific requests and to assign them to terminal 146146+ * identify the USB vendor-specific requests and to assign them to terminal156147 * settings (flow control, baud rate, etc.) the program "SerialSettings" from157148 * William G. Greathouse has been proven to be very useful. I also used the158158- * Win98 "HyperTerminal" and "usb-robot" on Linux for testing. The results and 149149+ * Win98 "HyperTerminal" and "usb-robot" on Linux for testing. The results and159150 * observations are summarized below:160151 *161152 * The USB requests seem to be directly mapped to the registers of a 8250,···195186 * Data: LCR (see below)196187 *197188 * Bit 7: Divisor Latch Access Bit (DLAB). When set, access to the data198198- * transmit/receive register (THR/RBR) and the Interrupt Enable Register199199- * (IER) is disabled. Any access to these ports is now redirected to the200200- * Divisor Latch Registers. Setting this bit, loading the Divisor201201- * Registers, and clearing DLAB should be done with interrupts disabled.189189+ * transmit/receive register (THR/RBR) and the Interrupt Enable Register190190+ * (IER) is disabled. Any access to these ports is now redirected to the191191+ * Divisor Latch Registers. Setting this bit, loading the Divisor192192+ * Registers, and clearing DLAB should be done with interrupts disabled.202193 * Bit 6: Set Break. When set to "1", the transmitter begins to transmit203203- * continuous Spacing until this bit is set to "0". This overrides any204204- * bits of characters that are being transmitted.194194+ * continuous Spacing until this bit is set to "0". This overrides any195195+ * bits of characters that are being transmitted.205196 * Bit 5: Stick Parity. When parity is enabled, setting this bit causes parity206206- * to always be "1" or "0", based on the value of Bit 4.197197+ * to always be "1" or "0", based on the value of Bit 4.207198 * Bit 4: Even Parity Select (EPS). When parity is enabled and Bit 5 is "0",208208- * setting this bit causes even parity to be transmitted and expected.209209- * Otherwise, odd parity is used.199199+ * setting this bit causes even parity to be transmitted and expected.200200+ * Otherwise, odd parity is used.210201 * Bit 3: Parity Enable (PEN). When set to "1", a parity bit is inserted211211- * between the last bit of the data and the Stop Bit. The UART will also212212- * expect parity to be present in the received data.202202+ * between the last bit of the data and the Stop Bit. The UART will also203203+ * expect parity to be present in the received data.213204 * Bit 2: Number of Stop Bits (STB). If set to "1" and using 5-bit data words,214214- * 1.5 Stop Bits are transmitted and expected in each data word. For215215- * 6, 7 and 8-bit data words, 2 Stop Bits are transmitted and expected.216216- * When this bit is set to "0", one Stop Bit is used on each data word.205205+ * 1.5 Stop Bits are transmitted and expected in each data word. For206206+ * 6, 7 and 8-bit data words, 2 Stop Bits are transmitted and expected.207207+ * When this bit is set to "0", one Stop Bit is used on each data word.217208 * Bit 1: Word Length Select Bit #1 (WLSB1)218209 * Bit 0: Word Length Select Bit #0 (WLSB0)219219- * Together these bits specify the number of bits in each data word.220220- * 1 0 Word Length221221- * 0 0 5 Data Bits222222- * 0 1 6 Data Bits223223- * 1 0 7 Data Bits224224- * 1 1 8 Data Bits210210+ * Together these bits specify the number of bits in each data word.211211+ * 1 0 Word Length212212+ * 0 0 5 Data Bits213213+ * 0 1 6 Data Bits214214+ * 1 0 7 Data Bits215215+ * 1 1 8 Data Bits225216 *226217 * SniffUSB observations: Bit 7 seems not to be used. There seem to be two bugs227218 * in the Win98 driver: the break does not work (bit 6 is not asserted) and the···243234 * Bit 6: Reserved, always 0.244235 * Bit 5: Reserved, always 0.245236 * Bit 4: Loop-Back Enable. When set to "1", the UART transmitter and receiver246246- * are internally connected together to allow diagnostic operations. In247247- * addition, the UART modem control outputs are connected to the UART248248- * modem control inputs. CTS is connected to RTS, DTR is connected to249249- * DSR, OUT1 is connected to RI, and OUT 2 is connected to DCD.237237+ * are internally connected together to allow diagnostic operations. In238238+ * addition, the UART modem control outputs are connected to the UART239239+ * modem control inputs. CTS is connected to RTS, DTR is connected to240240+ * DSR, OUT1 is connected to RI, and OUT 2 is connected to DCD.250241 * Bit 3: OUT 2. An auxiliary output that the host processor may set high or251251- * low. In the IBM PC serial adapter (and most clones), OUT 2 is used252252- * to tri-state (disable) the interrupt signal from the253253- * 8250/16450/16550 UART.242242+ * low. In the IBM PC serial adapter (and most clones), OUT 2 is used243243+ * to tri-state (disable) the interrupt signal from the244244+ * 8250/16450/16550 UART.254245 * Bit 2: OUT 1. An auxiliary output that the host processor may set high or255255- * low. This output is not used on the IBM PC serial adapter.246246+ * low. This output is not used on the IBM PC serial adapter.256247 * Bit 1: Request to Send (RTS). When set to "1", the output of the UART -RTS257257- * line is Low (Active).248248+ * line is Low (Active).258249 * Bit 0: Data Terminal Ready (DTR). When set to "1", the output of the UART259259- * -DTR line is Low (Active).250250+ * -DTR line is Low (Active).260251 *261252 * SniffUSB observations: Bit 2 and 4 seem not to be used but bit 3 has been262253 * seen _always_ set.···273264 * Data: MSR (see below)274265 *275266 * Bit 7: Data Carrier Detect (CD). Reflects the state of the DCD line on the276276- * UART.267267+ * UART.277268 * Bit 6: Ring Indicator (RI). Reflects the state of the RI line on the UART.278269 * Bit 5: Data Set Ready (DSR). Reflects the state of the DSR line on the UART.279270 * Bit 4: Clear To Send (CTS). Reflects the state of the CTS line on the UART.280271 * Bit 3: Delta Data Carrier Detect (DDCD). Set to "1" if the -DCD line has281281- * changed state one more more times since the last time the MSR was282282- * read by the host.272272+ * changed state one more more times since the last time the MSR was273273+ * read by the host.283274 * Bit 2: Trailing Edge Ring Indicator (TERI). Set to "1" if the -RI line has284284- * had a low to high transition since the last time the MSR was read by285285- * the host.275275+ * had a low to high transition since the last time the MSR was read by276276+ * the host.286277 * Bit 1: Delta Data Set Ready (DDSR). Set to "1" if the -DSR line has changed287287- * state one more more times since the last time the MSR was read by the288288- * host.278278+ * state one more more times since the last time the MSR was read by the279279+ * host.289280 * Bit 0: Delta Clear To Send (DCTS). Set to "1" if the -CTS line has changed290290- * state one more times since the last time the MSR was read by the291291- * host.281281+ * state one more times since the last time the MSR was read by the282282+ * host.292283 *293284 * SniffUSB observations: the MSR is also returned as first byte on the294285 * interrupt-in endpoint 0x83 to signal changes of modem status lines. The USB···299290 * --------------------------300291 *301292 * Bit 7 Error in Receiver FIFO. On the 8250/16450 UART, this bit is zero.302302- * This bit is set to "1" when any of the bytes in the FIFO have one or303303- * more of the following error conditions: PE, FE, or BI.293293+ * This bit is set to "1" when any of the bytes in the FIFO have one294294+ * or more of the following error conditions: PE, FE, or BI.304295 * Bit 6 Transmitter Empty (TEMT). When set to "1", there are no words305305- * remaining in the transmit FIFO or the transmit shift register. The306306- * transmitter is completely idle.307307- * Bit 5 Transmitter Holding Register Empty (THRE). When set to "1", the FIFO308308- * (or holding register) now has room for at least one additional word309309- * to transmit. The transmitter may still be transmitting when this bit310310- * is set to "1".296296+ * remaining in the transmit FIFO or the transmit shift register. The297297+ * transmitter is completely idle.298298+ * Bit 5 Transmitter Holding Register Empty (THRE). When set to "1", the299299+ * FIFO (or holding register) now has room for at least one additional300300+ * word to transmit. The transmitter may still be transmitting when301301+ * this bit is set to "1".311302 * Bit 4 Break Interrupt (BI). The receiver has detected a Break signal.312312- * Bit 3 Framing Error (FE). A Start Bit was detected but the Stop Bit did not313313- * appear at the expected time. The received word is probably garbled.314314- * Bit 2 Parity Error (PE). The parity bit was incorrect for the word received.315315- * Bit 1 Overrun Error (OE). A new word was received and there was no room in316316- * the receive buffer. The newly-arrived word in the shift register is317317- * discarded. On 8250/16450 UARTs, the word in the holding register is318318- * discarded and the newly- arrived word is put in the holding register.303303+ * Bit 3 Framing Error (FE). A Start Bit was detected but the Stop Bit did304304+ * not appear at the expected time. The received word is probably305305+ * garbled.306306+ * Bit 2 Parity Error (PE). The parity bit was incorrect for the word307307+ * received.308308+ * Bit 1 Overrun Error (OE). A new word was received and there was no room309309+ * in the receive buffer. The newly-arrived word in the shift register310310+ * is discarded. On 8250/16450 UARTs, the word in the holding register311311+ * is discarded and the newly- arrived word is put in the holding312312+ * register.319313 * Bit 0 Data Ready (DR). One or more words are in the receive FIFO that the320320- * host may read. A word must be completely received and moved from the321321- * shift register into the FIFO (or holding register for 8250/16450322322- * designs) before this bit is set.314314+ * host may read. A word must be completely received and moved from315315+ * the shift register into the FIFO (or holding register for316316+ * 8250/16450 designs) before this bit is set.323317 *324324- * SniffUSB observations: the LSR is returned as second byte on the interrupt-in325325- * endpoint 0x83 to signal error conditions. Such errors have been seen with326326- * minicom/zmodem transfers (CRC errors).318318+ * SniffUSB observations: the LSR is returned as second byte on the319319+ * interrupt-in endpoint 0x83 to signal error conditions. Such errors have320320+ * been seen with minicom/zmodem transfers (CRC errors).327321 *328322 *329323 * Unknown #1···376364 * --------------377365 *378366 * SniffUSB observations: the bulk-out endpoint 0x1 and interrupt-in endpoint379379- * 0x81 is used to transmit and receive characters. The second interrupt-in 380380- * endpoint 0x83 signals exceptional conditions like modem line changes and 367367+ * 0x81 is used to transmit and receive characters. The second interrupt-in368368+ * endpoint 0x83 signals exceptional conditions like modem line changes and381369 * errors. The first byte returned is the MSR and the second byte the LSR.382370 *383371 *384372 * Other observations385373 * ------------------386374 *387387- * Queued bulk transfers like used in visor.c did not work. 388388- * 375375+ * Queued bulk transfers like used in visor.c did not work.376376+ *389377 *390378 * Properties of the USB device used (as found in /var/log/messages)391379 * -----------------------------------------------------------------···423411 * bInterface Class:SubClass:Protocol = 00:00:00424412 * iInterface = 00425413 * Endpoint:426426- * bLength = 7427427- * bDescriptorType = 05428428- * bEndpointAddress = 81 (in)429429- * bmAttributes = 03 (Interrupt)430430- * wMaxPacketSize = 0040431431- * bInterval = 02414414+ * bLength = 7415415+ * bDescriptorType = 05416416+ * bEndpointAddress = 81 (in)417417+ * bmAttributes = 03 (Interrupt)418418+ * wMaxPacketSize = 0040419419+ * bInterval = 02432420 * Endpoint:433433- * bLength = 7434434- * bDescriptorType = 05435435- * bEndpointAddress = 01 (out)436436- * bmAttributes = 02 (Bulk)437437- * wMaxPacketSize = 0040438438- * bInterval = 00421421+ * bLength = 7422422+ * bDescriptorType = 05423423+ * bEndpointAddress = 01 (out)424424+ * bmAttributes = 02 (Bulk)425425+ * wMaxPacketSize = 0040426426+ * bInterval = 00439427 * Endpoint:440440- * bLength = 7441441- * bDescriptorType = 05442442- * bEndpointAddress = 83 (in)443443- * bmAttributes = 03 (Interrupt)444444- * wMaxPacketSize = 0002445445- * bInterval = 02428428+ * bLength = 7429429+ * bDescriptorType = 05430430+ * bEndpointAddress = 83 (in)431431+ * bmAttributes = 03 (Interrupt)432432+ * wMaxPacketSize = 0002433433+ * bInterval = 02446434 *447435 *448436 * Hardware details (added by Martin Hamilton, 2001/12/06)···452440 * adaptor, which turns out to simply be a re-badged U232-P9. We453441 * know this because there is a sticky label on the circuit board454442 * which says "U232-P9" ;-)455455- * 443443+ *456444 * The circuit board inside the adaptor contains a Philips PDIUSBD12457445 * USB endpoint chip and a Philips P87C52UBAA microcontroller with458446 * embedded UART. Exhaustive documentation for these is available at:···461449 * http://www.semiconductors.philips.com/pip/pdiusbd12462450 *463451 * Thanks to Julian Highfield for the pointer to the Philips database.464464- * 452452+ *465453 */466454467455#endif /* __LINUX_USB_SERIAL_MCT_U232_H */