| /linux/Documentation/networking/device_drivers/hamradio/ |
| H A D | baycom.rst | 80 about DCD, i.e. it starts to send even if there's someone else on the channel.
114 to use the software DCD algorithm (see below)::
121 hardware DCD, par96 implies software DCD).
127 Hardware DCD versus Software DCD
131 busy. This is the task of the DCD circuitry/software. The driver may either
132 utilise a software DCD algorithm (options=1) or use a DCD signal from
136 ser12 if software DCD is utilised, the radio's squelch should always be
137 open. It is highly recommended to use the software DCD algorithm,
141 par96 the software DCD algorithm for this type of modem is rather poor.
143 a reasonable DCD algorithm in software. Therefore, if your radio
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-class-led-trigger-tty | 44 What: /sys/class/leds/<tty_led>/dcd
48 DCD = Data Carrier Detect
51 If set to 0 (default), the LED will not evaluate CAR (DCD).
52 If set to 1, the LED will evaluate CAR (DCD).
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| /linux/drivers/net/hamradio/ |
| H A D | baycom_ser_hdx.c | 25 * mode ser12 hardware DCD
26 * ser12* software DCD
27 * ser12@ hardware/software DCD, i.e. no explicit DCD signal but hardware
29 * ser12+ hardware DCD, inverted signal at DCD pin
236 /* offset to ensure DCD off on silent input */ in ser12_rx()
243 * PLL code for the improved software DCD algorithm in ser12_rx()
281 * DCD stuff in ser12_rx()
298 * PLL algorithm for the hardware squelch DCD algorithm in ser12_rx()
335 * DCD stuff in ser12_rx()
353 /* offset to ensure DCD off on silent input */ in ser12_rx()
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| H A D | baycom_ser_fdx.c | 34 * mode ser# hardware DCD
35 * ser#* software DCD
36 * ser#+ hardware DCD, inverted signal at DCD pin
37 * '#' denotes the baud rate / 100, eg. ser12* is '1200 baud, soft DCD'
232 /* update DCD */ in ser12_rx()
263 /* delta DCD */ in ser12_interrupt()
297 /* delta DCD */ in ser12_interrupt()
576 MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD");
650 * mode: ser# hardware DCD
651 * ser#* software DCD
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| H A D | scc.c | 366 /* DCD/CTS and Rx/Tx errors */
443 /* ABORT: generated whenever DCD drops while receiving */ in scc_exint()
448 /* HUNT: software DCD; on = waiting for SYNC, off = receiving frame */ in scc_exint()
454 scc->dcd = 0; in scc_exint()
459 scc->dcd = 1; in scc_exint()
462 scc_notify(scc, scc->dcd? HWEV_DCD_OFF:HWEV_DCD_ON); in scc_exint()
465 /* DCD: on = start to receive packet, off = ABORT condition */ in scc_exint()
468 if((changes & DCD) && !scc->kiss.softdcd) /* DCD input changed state */ in scc_exint()
470 if(status & DCD) /* DCD is now ON */ in scc_exint()
473 scc->dcd = 1; in scc_exint()
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| /linux/arch/m68k/include/asm/ |
| H A D | nettel.h | 30 * NETtel/5307 based hardware first. DTR/DCD lines are wired to
47 * PPIO bits used for DTR/DCD.
76 * NETtel/5272 based hardware. DTR/DCD lines are wired to GPB lines.
79 #define MCFPP_DCD1 0x0000 /* Port 1 no DCD support */
86 * PPIO bits used for DTR/DCD.
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| /linux/arch/arm/boot/dts/ti/omap/ |
| H A D | am335x-netcom-plus-2xx.dts | 29 AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_INPUT_PULLDOWN, MUX_MODE7) /* DCD */
42 AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLDOWN, MUX_MODE7) /* DCD */
62 dcd-gpios = <&gpio2 24 GPIO_ACTIVE_LOW>;
73 dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
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| H A D | am335x-baltos-ir3220.dts | 35 …M33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_INPUT_PULLDOWN, MUX_MODE7) /* lcd_pclk.gpio2[24] DCD */
48 …3XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLDOWN, MUX_MODE7) /* gpmc_ad14.gpio1[14] DCD */
67 dcd-gpios = <&gpio2 24 GPIO_ACTIVE_LOW>;
78 dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
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| H A D | am335x-baltos-ir5221.dts | 43 …M33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_INPUT_PULLDOWN, MUX_MODE7) /* lcd_pclk.gpio2[24] DCD */
56 …3XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLDOWN, MUX_MODE7) /* gpmc_ad14.gpio1[14] DCD */
75 dcd-gpios = <&gpio2 24 GPIO_ACTIVE_LOW>;
86 dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
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| H A D | am335x-baltos-ir2110.dts | 29 …M33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_INPUT_PULLDOWN, MUX_MODE7) /* lcd_pclk.gpio2[24] DCD */
46 dcd-gpios = <&gpio2 24 GPIO_ACTIVE_LOW>;
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| /linux/include/linux/ |
| H A D | scc.h | 43 unsigned char softdcd; /* Use DPLL instead of DCD pin for carrier detect */
68 unsigned char dcd; /* DCD status */ member
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| H A D | hdlcdrv.h | 114 unsigned char dcd; member
251 static inline void hdlcdrv_setdcd(struct hdlcdrv_state *s, int dcd) in hdlcdrv_setdcd() argument
253 s->hdlcrx.dcd = !!dcd; in hdlcdrv_setdcd()
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| H A D | hdlc.h | 22 void (*start)(struct net_device *dev); /* if open & DCD */
23 void (*stop)(struct net_device *dev); /* if open & !DCD */
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| /linux/Documentation/devicetree/bindings/net/ |
| H A D | intel,ixp4xx-hss.yaml | 94 dcd-gpios:
96 description: Data Carrier Detect (DCD) GPIO line
119 - dcd-gpios
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| /linux/include/uapi/linux/ |
| H A D | hdlcdrv.h | 32 /* this just makes them send even if DCD is on */
37 int dcd; member
43 int dcd; member
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| H A D | serial.h | 101 * Four lines can interrupt: CTS, DSR, RI, DCD
104 int cts, dsr, rng, dcd; member
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| /linux/drivers/media/rc/ |
| H A D | serial_ir.c | 323 int counter, dcd; in serial_ir_irq_handler() local
354 dcd = (status & hardware[type].signal_pin) ? 1 : 0; in serial_ir_irq_handler()
356 if (dcd == last_dcd) { in serial_ir_irq_handler()
359 dcd, sense, ktime_to_ns(kt), in serial_ir_irq_handler()
367 if (!(dcd ^ sense)) { in serial_ir_irq_handler()
370 "dcd unexpected: %d %d %lldns %lldns\n", in serial_ir_irq_handler()
371 dcd, sense, ktime_to_ns(kt), in serial_ir_irq_handler()
382 frbwrite(data, !(dcd ^ sense)); in serial_ir_irq_handler()
384 last_dcd = dcd; in serial_ir_irq_handler()
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| /linux/Documentation/devicetree/bindings/serial/ |
| H A D | snps-dw-apb-uart.yaml | 122 dcd-override:
123 description: Override the DCD modem status signal. This signal will
164 dcd-override;
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| H A D | serial.yaml | 34 dcd-gpios:
38 the UART's DCD line.
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| /linux/arch/sh/include/mach-common/mach/ |
| H A D | secureedge5410.h | 23 * D0 DCD on ttySC1 power
27 * D4 ttySC0 DCD (7100) CONSOLE
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| /linux/arch/arm/mach-sa1100/ |
| H A D | h3xxx.c | 109 PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ in h3xxx_uart_set_wake()
111 PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ in h3xxx_uart_set_wake()
125 GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_DCD, "dcd", GPIO_ACTIVE_LOW),
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| /linux/drivers/net/wan/ |
| H A D | hd64570.h | 221 #define ST1_CDCD 0x04 /* DCD level changed */
224 #define ST3_DCD 0x04 /* modem input - /DCD */
229 #define IE1_CDCD 0x04 /* DCD level changed */
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| /linux/include/linux/amba/ |
| H A D | serial.h | 183 #define UART011_DCDMIM BIT(2) /* DCD interrupt mask */
195 #define UART011_DCDMIS BIT(2) /* DCD interrupt status */
207 #define UART011_DCDMIC BIT(2) /* DCD interrupt clear */
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| /linux/Documentation/arch/arm/sa1100/ |
| H A D | assabet.rst | 253 Radio: TX, RX, CTS, DSR, DCD, RI
255 - COM: TX, RX, CTS, DSR, DCD, RTS, DTR, PM
294 - COM1,2: TX, RX, CTS, DSR, DCD, RTS, DTR
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| /linux/drivers/usb/serial/ |
| H A D | keyspan_usa90msg.h | 158 dcd, // reports DCD pin member
|