Lines Matching refs:up
327 static int default_serial_dl_read(struct uart_8250_port *up) in default_serial_dl_read() argument
330 unsigned char dll = serial_in(up, UART_DLL); in default_serial_dl_read()
331 unsigned char dlm = serial_in(up, UART_DLM); in default_serial_dl_read()
337 static void default_serial_dl_write(struct uart_8250_port *up, int value) in default_serial_dl_write() argument
339 serial_out(up, UART_DLL, value & 0xff); in default_serial_dl_write()
340 serial_out(up, UART_DLM, value >> 8 & 0xff); in default_serial_dl_write()
391 static int au_serial_dl_read(struct uart_8250_port *up) in au_serial_dl_read() argument
393 return __raw_readl(up->port.membase + 0x28); in au_serial_dl_read()
396 static void au_serial_dl_write(struct uart_8250_port *up, int value) in au_serial_dl_write() argument
398 __raw_writel(value, up->port.membase + 0x28); in au_serial_dl_write()
481 struct uart_8250_port *up = up_to_u8250p(p); in set_io_from_upio() local
483 up->dl_read = default_serial_dl_read; in set_io_from_upio()
484 up->dl_write = default_serial_dl_write; in set_io_from_upio()
516 up->dl_read = au_serial_dl_read; in set_io_from_upio()
517 up->dl_write = au_serial_dl_write; in set_io_from_upio()
527 up->cur_iotype = p->iotype; in set_io_from_upio()
680 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_em485_config() local
694 return serial8250_em485_init(up); in serial8250_em485_config()
696 serial8250_em485_destroy(up); in serial8250_em485_config()
765 static void serial8250_clear_IER(struct uart_8250_port *up) in serial8250_clear_IER() argument
767 if (up->capabilities & UART_CAP_UUE) in serial8250_clear_IER()
768 serial_out(up, UART_IER, UART_IER_UUE); in serial8250_clear_IER()
770 serial_out(up, UART_IER, 0); in serial8250_clear_IER()
778 static int __enable_rsa(struct uart_8250_port *up) in __enable_rsa() argument
783 mode = serial_in(up, UART_RSA_MSR); in __enable_rsa()
787 serial_out(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO); in __enable_rsa()
788 mode = serial_in(up, UART_RSA_MSR); in __enable_rsa()
793 up->port.uartclk = SERIAL_RSA_BAUD_BASE * 16; in __enable_rsa()
798 static void enable_rsa(struct uart_8250_port *up) in enable_rsa() argument
800 if (up->port.type == PORT_RSA) { in enable_rsa()
801 if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) { in enable_rsa()
802 spin_lock_irq(&up->port.lock); in enable_rsa()
803 __enable_rsa(up); in enable_rsa()
804 spin_unlock_irq(&up->port.lock); in enable_rsa()
806 if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) in enable_rsa()
807 serial_out(up, UART_RSA_FRR, 0); in enable_rsa()
817 static void disable_rsa(struct uart_8250_port *up) in disable_rsa() argument
822 if (up->port.type == PORT_RSA && in disable_rsa()
823 up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) { in disable_rsa()
824 spin_lock_irq(&up->port.lock); in disable_rsa()
826 mode = serial_in(up, UART_RSA_MSR); in disable_rsa()
830 serial_out(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO); in disable_rsa()
831 mode = serial_in(up, UART_RSA_MSR); in disable_rsa()
836 up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16; in disable_rsa()
837 spin_unlock_irq(&up->port.lock); in disable_rsa()
846 static int size_fifo(struct uart_8250_port *up) in size_fifo() argument
852 old_lcr = serial_in(up, UART_LCR); in size_fifo()
853 serial_out(up, UART_LCR, 0); in size_fifo()
854 old_fcr = serial_in(up, UART_FCR); in size_fifo()
855 old_mcr = serial8250_in_MCR(up); in size_fifo()
856 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in size_fifo()
858 serial8250_out_MCR(up, UART_MCR_LOOP); in size_fifo()
859 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in size_fifo()
860 old_dl = serial_dl_read(up); in size_fifo()
861 serial_dl_write(up, 0x0001); in size_fifo()
862 serial_out(up, UART_LCR, UART_LCR_WLEN8); in size_fifo()
864 serial_out(up, UART_TX, count); in size_fifo()
866 for (count = 0; (serial_in(up, UART_LSR) & UART_LSR_DR) && in size_fifo()
868 serial_in(up, UART_RX); in size_fifo()
869 serial_out(up, UART_FCR, old_fcr); in size_fifo()
870 serial8250_out_MCR(up, old_mcr); in size_fifo()
871 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in size_fifo()
872 serial_dl_write(up, old_dl); in size_fifo()
873 serial_out(up, UART_LCR, old_lcr); in size_fifo()
910 static void autoconfig_has_efr(struct uart_8250_port *up) in autoconfig_has_efr() argument
917 up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; in autoconfig_has_efr()
936 up->acr = 0; in autoconfig_has_efr()
937 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in autoconfig_has_efr()
938 serial_out(up, UART_EFR, UART_EFR_ECB); in autoconfig_has_efr()
939 serial_out(up, UART_LCR, 0x00); in autoconfig_has_efr()
940 id1 = serial_icr_read(up, UART_ID1); in autoconfig_has_efr()
941 id2 = serial_icr_read(up, UART_ID2); in autoconfig_has_efr()
942 id3 = serial_icr_read(up, UART_ID3); in autoconfig_has_efr()
943 rev = serial_icr_read(up, UART_REV); in autoconfig_has_efr()
949 up->port.type = PORT_16C950; in autoconfig_has_efr()
957 up->bugs |= UART_BUG_QUOT; in autoconfig_has_efr()
969 id1 = autoconfig_read_divisor_id(up); in autoconfig_has_efr()
974 up->port.type = PORT_16850; in autoconfig_has_efr()
987 if (size_fifo(up) == 64) in autoconfig_has_efr()
988 up->port.type = PORT_16654; in autoconfig_has_efr()
990 up->port.type = PORT_16650V2; in autoconfig_has_efr()
998 static void autoconfig_8250(struct uart_8250_port *up) in autoconfig_8250() argument
1002 up->port.type = PORT_8250; in autoconfig_8250()
1004 scratch = serial_in(up, UART_SCR); in autoconfig_8250()
1005 serial_out(up, UART_SCR, 0xa5); in autoconfig_8250()
1006 status1 = serial_in(up, UART_SCR); in autoconfig_8250()
1007 serial_out(up, UART_SCR, 0x5a); in autoconfig_8250()
1008 status2 = serial_in(up, UART_SCR); in autoconfig_8250()
1009 serial_out(up, UART_SCR, scratch); in autoconfig_8250()
1012 up->port.type = PORT_16450; in autoconfig_8250()
1015 static int broken_efr(struct uart_8250_port *up) in broken_efr() argument
1022 if (autoconfig_read_divisor_id(up) == 0x0201 && size_fifo(up) == 16) in broken_efr()
1034 static void autoconfig_16550a(struct uart_8250_port *up) in autoconfig_16550a() argument
1039 up->port.type = PORT_16550A; in autoconfig_16550a()
1040 up->capabilities |= UART_CAP_FIFO; in autoconfig_16550a()
1043 !(up->port.flags & UPF_FULL_PROBE)) in autoconfig_16550a()
1050 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in autoconfig_16550a()
1051 if (serial_in(up, UART_EFR) == 0) { in autoconfig_16550a()
1052 serial_out(up, UART_EFR, 0xA8); in autoconfig_16550a()
1053 if (serial_in(up, UART_EFR) != 0) { in autoconfig_16550a()
1055 up->port.type = PORT_16650; in autoconfig_16550a()
1056 up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; in autoconfig_16550a()
1058 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1059 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in autoconfig_16550a()
1061 status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | in autoconfig_16550a()
1063 serial_out(up, UART_FCR, 0); in autoconfig_16550a()
1064 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1067 up->port.type = PORT_16550A_FSL64; in autoconfig_16550a()
1071 serial_out(up, UART_EFR, 0); in autoconfig_16550a()
1079 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in autoconfig_16550a()
1080 if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) { in autoconfig_16550a()
1082 autoconfig_has_efr(up); in autoconfig_16550a()
1093 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1094 status1 = serial8250_in_MCR(up); in autoconfig_16550a()
1095 serial_out(up, UART_LCR, 0xE0); in autoconfig_16550a()
1096 status2 = serial_in(up, 0x02); /* EXCR1 */ in autoconfig_16550a()
1099 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1100 serial8250_out_MCR(up, status1 ^ UART_MCR_LOOP); in autoconfig_16550a()
1101 serial_out(up, UART_LCR, 0xE0); in autoconfig_16550a()
1102 status2 = serial_in(up, 0x02); /* EXCR1 */ in autoconfig_16550a()
1103 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1104 serial8250_out_MCR(up, status1); in autoconfig_16550a()
1109 serial_out(up, UART_LCR, 0xE0); in autoconfig_16550a()
1111 quot = serial_dl_read(up); in autoconfig_16550a()
1114 if (ns16550a_goto_highspeed(up)) in autoconfig_16550a()
1115 serial_dl_write(up, quot); in autoconfig_16550a()
1117 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1119 up->port.uartclk = 921600*16; in autoconfig_16550a()
1120 up->port.type = PORT_NS16550A; in autoconfig_16550a()
1121 up->capabilities |= UART_NATSEMI; in autoconfig_16550a()
1132 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1133 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); in autoconfig_16550a()
1134 status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED); in autoconfig_16550a()
1135 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in autoconfig_16550a()
1137 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in autoconfig_16550a()
1138 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); in autoconfig_16550a()
1139 status2 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED); in autoconfig_16550a()
1140 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in autoconfig_16550a()
1142 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1148 up->port.type = PORT_16750; in autoconfig_16550a()
1149 up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP; in autoconfig_16550a()
1161 iersave = serial_in(up, UART_IER); in autoconfig_16550a()
1162 serial_out(up, UART_IER, iersave & ~UART_IER_UUE); in autoconfig_16550a()
1163 if (!(serial_in(up, UART_IER) & UART_IER_UUE)) { in autoconfig_16550a()
1168 serial_out(up, UART_IER, iersave | UART_IER_UUE); in autoconfig_16550a()
1169 if (serial_in(up, UART_IER) & UART_IER_UUE) { in autoconfig_16550a()
1175 up->port.type = PORT_XSCALE; in autoconfig_16550a()
1176 up->capabilities |= UART_CAP_UUE | UART_CAP_RTOIE; in autoconfig_16550a()
1186 serial_out(up, UART_IER, iersave); in autoconfig_16550a()
1192 if (up->port.type == PORT_16550A && size_fifo(up) == 64) { in autoconfig_16550a()
1193 up->port.type = PORT_U6_16550A; in autoconfig_16550a()
1194 up->capabilities |= UART_CAP_AFE; in autoconfig_16550a()
1205 static void autoconfig(struct uart_8250_port *up) in autoconfig() argument
1209 struct uart_port *port = &up->port; in autoconfig()
1225 up->capabilities = 0; in autoconfig()
1226 up->bugs = 0; in autoconfig()
1242 scratch = serial_in(up, UART_IER); in autoconfig()
1243 serial_out(up, UART_IER, 0); in autoconfig()
1251 scratch2 = serial_in(up, UART_IER) & UART_IER_ALL_INTR; in autoconfig()
1252 serial_out(up, UART_IER, UART_IER_ALL_INTR); in autoconfig()
1256 scratch3 = serial_in(up, UART_IER) & UART_IER_ALL_INTR; in autoconfig()
1257 serial_out(up, UART_IER, scratch); in autoconfig()
1269 save_mcr = serial8250_in_MCR(up); in autoconfig()
1270 save_lcr = serial_in(up, UART_LCR); in autoconfig()
1282 serial8250_out_MCR(up, UART_MCR_LOOP | UART_MCR_OUT2 | UART_MCR_RTS); in autoconfig()
1283 status1 = serial_in(up, UART_MSR) & UART_MSR_STATUS_BITS; in autoconfig()
1284 serial8250_out_MCR(up, save_mcr); in autoconfig()
1302 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in autoconfig()
1303 serial_out(up, UART_EFR, 0); in autoconfig()
1304 serial_out(up, UART_LCR, 0); in autoconfig()
1306 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in autoconfig()
1308 switch (serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED) { in autoconfig()
1310 autoconfig_8250(up); in autoconfig()
1316 autoconfig_16550a(up); in autoconfig()
1327 if (port->type == PORT_16550A && up->probe & UART_PROBE_RSA && in autoconfig()
1328 __enable_rsa(up)) in autoconfig()
1332 serial_out(up, UART_LCR, save_lcr); in autoconfig()
1334 port->fifosize = uart_config[up->port.type].fifo_size; in autoconfig()
1335 old_capabilities = up->capabilities; in autoconfig()
1336 up->capabilities = uart_config[port->type].flags; in autoconfig()
1337 up->tx_loadsz = uart_config[port->type].tx_loadsz; in autoconfig()
1347 serial_out(up, UART_RSA_FRR, 0); in autoconfig()
1349 serial8250_out_MCR(up, save_mcr); in autoconfig()
1350 serial8250_clear_fifos(up); in autoconfig()
1351 serial_in(up, UART_RX); in autoconfig()
1352 serial8250_clear_IER(up); in autoconfig()
1361 fintek_8250_probe(up); in autoconfig()
1363 if (up->capabilities != old_capabilities) { in autoconfig()
1365 old_capabilities, up->capabilities); in autoconfig()
1372 static void autoconfig_irq(struct uart_8250_port *up) in autoconfig_irq() argument
1374 struct uart_port *port = &up->port; in autoconfig_irq()
1393 save_mcr = serial8250_in_MCR(up); in autoconfig_irq()
1394 save_ier = serial_in(up, UART_IER); in autoconfig_irq()
1395 serial8250_out_MCR(up, UART_MCR_OUT1 | UART_MCR_OUT2); in autoconfig_irq()
1398 serial8250_out_MCR(up, 0); in autoconfig_irq()
1401 serial8250_out_MCR(up, UART_MCR_DTR | UART_MCR_RTS); in autoconfig_irq()
1403 serial8250_out_MCR(up, in autoconfig_irq()
1406 serial_out(up, UART_IER, UART_IER_ALL_INTR); in autoconfig_irq()
1407 serial_in(up, UART_LSR); in autoconfig_irq()
1408 serial_in(up, UART_RX); in autoconfig_irq()
1409 serial_in(up, UART_IIR); in autoconfig_irq()
1410 serial_in(up, UART_MSR); in autoconfig_irq()
1411 serial_out(up, UART_TX, 0xFF); in autoconfig_irq()
1415 serial8250_out_MCR(up, save_mcr); in autoconfig_irq()
1416 serial_out(up, UART_IER, save_ier); in autoconfig_irq()
1429 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_stop_rx() local
1431 serial8250_rpm_get(up); in serial8250_stop_rx()
1433 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial8250_stop_rx()
1434 up->port.read_status_mask &= ~UART_LSR_DR; in serial8250_stop_rx()
1435 serial_port_out(port, UART_IER, up->ier); in serial8250_stop_rx()
1437 serial8250_rpm_put(up); in serial8250_stop_rx()
1555 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_stop_tx() local
1557 serial8250_rpm_get(up); in serial8250_stop_tx()
1558 __stop_tx(up); in serial8250_stop_tx()
1564 up->acr |= UART_ACR_TXDIS; in serial8250_stop_tx()
1565 serial_icr_write(up, UART_ACR, up->acr); in serial8250_stop_tx()
1567 serial8250_rpm_put(up); in serial8250_stop_tx()
1572 struct uart_8250_port *up = up_to_u8250p(port); in __start_tx() local
1574 if (up->dma && !up->dma->tx_dma(up)) in __start_tx()
1577 if (serial8250_set_THRI(up)) { in __start_tx()
1578 if (up->bugs & UART_BUG_TXEN) { in __start_tx()
1579 u16 lsr = serial_lsr_in(up); in __start_tx()
1582 serial8250_tx_chars(up); in __start_tx()
1589 if (port->type == PORT_16C950 && up->acr & UART_ACR_TXDIS) { in __start_tx()
1590 up->acr &= ~UART_ACR_TXDIS; in __start_tx()
1591 serial_icr_write(up, UART_ACR, up->acr); in __start_tx()
1605 void serial8250_em485_start_tx(struct uart_8250_port *up) in serial8250_em485_start_tx() argument
1607 unsigned char mcr = serial8250_in_MCR(up); in serial8250_em485_start_tx()
1609 if (!(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in serial8250_em485_start_tx()
1610 serial8250_stop_rx(&up->port); in serial8250_em485_start_tx()
1612 if (up->port.rs485.flags & SER_RS485_RTS_ON_SEND) in serial8250_em485_start_tx()
1616 serial8250_out_MCR(up, mcr); in serial8250_em485_start_tx()
1623 struct uart_8250_port *up = up_to_u8250p(port); in start_tx_rs485() local
1624 struct uart_8250_em485 *em485 = up->em485; in start_tx_rs485()
1643 up->rs485_start_tx(up); in start_tx_rs485()
1645 if (up->port.rs485.delay_rts_before_send > 0) { in start_tx_rs485()
1648 up->port.rs485.delay_rts_before_send); in start_tx_rs485()
1675 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_start_tx() local
1676 struct uart_8250_em485 *em485 = up->em485; in serial8250_start_tx()
1681 serial8250_rpm_get_tx(up); in serial8250_start_tx()
1703 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_disable_ms() local
1706 if (up->bugs & UART_BUG_NOMSR) in serial8250_disable_ms()
1709 mctrl_gpio_disable_ms(up->gpios); in serial8250_disable_ms()
1711 up->ier &= ~UART_IER_MSI; in serial8250_disable_ms()
1712 serial_port_out(port, UART_IER, up->ier); in serial8250_disable_ms()
1717 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_enable_ms() local
1720 if (up->bugs & UART_BUG_NOMSR) in serial8250_enable_ms()
1723 mctrl_gpio_enable_ms(up->gpios); in serial8250_enable_ms()
1725 up->ier |= UART_IER_MSI; in serial8250_enable_ms()
1727 serial8250_rpm_get(up); in serial8250_enable_ms()
1728 serial_port_out(port, UART_IER, up->ier); in serial8250_enable_ms()
1729 serial8250_rpm_put(up); in serial8250_enable_ms()
1732 void serial8250_read_char(struct uart_8250_port *up, u16 lsr) in serial8250_read_char() argument
1734 struct uart_port *port = &up->port; in serial8250_read_char()
1739 ch = serial_in(up, UART_RX); in serial8250_read_char()
1752 lsr |= up->lsr_saved_flags; in serial8250_read_char()
1753 up->lsr_saved_flags = 0; in serial8250_read_char()
1801 u16 serial8250_rx_chars(struct uart_8250_port *up, u16 lsr) in serial8250_rx_chars() argument
1803 struct uart_port *port = &up->port; in serial8250_rx_chars()
1807 serial8250_read_char(up, lsr); in serial8250_rx_chars()
1810 lsr = serial_in(up, UART_LSR); in serial8250_rx_chars()
1818 void serial8250_tx_chars(struct uart_8250_port *up) in serial8250_tx_chars() argument
1820 struct uart_port *port = &up->port; in serial8250_tx_chars()
1833 __stop_tx(up); in serial8250_tx_chars()
1837 count = up->tx_loadsz; in serial8250_tx_chars()
1839 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in serial8250_tx_chars()
1840 if (up->bugs & UART_BUG_TXRACE) { in serial8250_tx_chars()
1850 serial_in(up, UART_SCR); in serial8250_tx_chars()
1855 if ((up->capabilities & UART_CAP_HFIFO) && in serial8250_tx_chars()
1856 !uart_lsr_tx_empty(serial_in(up, UART_LSR))) in serial8250_tx_chars()
1859 if ((up->capabilities & UART_CAP_MINI) && in serial8250_tx_chars()
1860 !(serial_in(up, UART_LSR) & UART_LSR_THRE)) in serial8250_tx_chars()
1872 if (uart_circ_empty(xmit) && !(up->capabilities & UART_CAP_RPM)) in serial8250_tx_chars()
1873 __stop_tx(up); in serial8250_tx_chars()
1878 unsigned int serial8250_modem_status(struct uart_8250_port *up) in serial8250_modem_status() argument
1880 struct uart_port *port = &up->port; in serial8250_modem_status()
1881 unsigned int status = serial_in(up, UART_MSR); in serial8250_modem_status()
1883 status |= up->msr_saved_flags; in serial8250_modem_status()
1884 up->msr_saved_flags = 0; in serial8250_modem_status()
1885 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in serial8250_modem_status()
1903 static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) in handle_rx_dma() argument
1907 if (!up->dma->rx_running) in handle_rx_dma()
1912 serial8250_rx_dma_flush(up); in handle_rx_dma()
1915 return up->dma->rx_dma(up); in handle_rx_dma()
1923 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_handle_irq() local
1933 status = serial_lsr_in(up); in serial8250_handle_irq()
1949 if (!up->dma || handle_rx_dma(up, iir)) in serial8250_handle_irq()
1950 status = serial8250_rx_chars(up, status); in serial8250_handle_irq()
1952 serial8250_modem_status(up); in serial8250_handle_irq()
1953 if ((status & UART_LSR_THRE) && (up->ier & UART_IER_THRI)) { in serial8250_handle_irq()
1954 if (!up->dma || up->dma->tx_err) in serial8250_handle_irq()
1955 serial8250_tx_chars(up); in serial8250_handle_irq()
1956 else if (!up->dma->tx_running) in serial8250_handle_irq()
1957 __stop_tx(up); in serial8250_handle_irq()
1968 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_default_handle_irq() local
1972 serial8250_rpm_get(up); in serial8250_default_handle_irq()
1977 serial8250_rpm_put(up); in serial8250_default_handle_irq()
1994 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_tx_threshold_handle_irq() local
1997 serial8250_tx_chars(up); in serial8250_tx_threshold_handle_irq()
2007 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_tx_empty() local
2011 serial8250_rpm_get(up); in serial8250_tx_empty()
2014 lsr = serial_lsr_in(up); in serial8250_tx_empty()
2017 serial8250_rpm_put(up); in serial8250_tx_empty()
2024 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_get_mctrl() local
2028 serial8250_rpm_get(up); in serial8250_do_get_mctrl()
2029 status = serial8250_modem_status(up); in serial8250_do_get_mctrl()
2030 serial8250_rpm_put(up); in serial8250_do_get_mctrl()
2033 if (up->gpios) in serial8250_do_get_mctrl()
2034 return mctrl_gpio_get(up->gpios, &val); in serial8250_do_get_mctrl()
2049 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_set_mctrl() local
2054 mcr |= up->mcr; in serial8250_do_set_mctrl()
2056 serial8250_out_MCR(up, mcr); in serial8250_do_set_mctrl()
2073 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_break_ctl() local
2076 serial8250_rpm_get(up); in serial8250_break_ctl()
2079 up->lcr |= UART_LCR_SBC; in serial8250_break_ctl()
2081 up->lcr &= ~UART_LCR_SBC; in serial8250_break_ctl()
2082 serial_port_out(port, UART_LCR, up->lcr); in serial8250_break_ctl()
2084 serial8250_rpm_put(up); in serial8250_break_ctl()
2087 static void wait_for_lsr(struct uart_8250_port *up, int bits) in wait_for_lsr() argument
2093 status = serial_lsr_in(up); in wait_for_lsr()
2107 static void wait_for_xmitr(struct uart_8250_port *up, int bits) in wait_for_xmitr() argument
2111 wait_for_lsr(up, bits); in wait_for_xmitr()
2114 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
2116 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
2117 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
2134 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_get_poll_char() local
2138 serial8250_rpm_get(up); in serial8250_get_poll_char()
2149 serial8250_rpm_put(up); in serial8250_get_poll_char()
2158 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_put_poll_char() local
2160 serial8250_rpm_get(up); in serial8250_put_poll_char()
2165 serial8250_clear_IER(up); in serial8250_put_poll_char()
2167 wait_for_xmitr(up, UART_LSR_BOTH_EMPTY); in serial8250_put_poll_char()
2177 wait_for_xmitr(up, UART_LSR_BOTH_EMPTY); in serial8250_put_poll_char()
2179 serial8250_rpm_put(up); in serial8250_put_poll_char()
2186 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_startup() local
2194 if (!up->tx_loadsz) in serial8250_do_startup()
2195 up->tx_loadsz = uart_config[port->type].tx_loadsz; in serial8250_do_startup()
2196 if (!up->capabilities) in serial8250_do_startup()
2197 up->capabilities = uart_config[port->type].flags; in serial8250_do_startup()
2198 up->mcr = 0; in serial8250_do_startup()
2200 if (port->iotype != up->cur_iotype) in serial8250_do_startup()
2203 serial8250_rpm_get(up); in serial8250_do_startup()
2206 up->acr = 0; in serial8250_do_startup()
2211 serial_icr_write(up, UART_CSR, 0); /* Reset the UART */ in serial8250_do_startup()
2244 enable_rsa(up); in serial8250_do_startup()
2251 serial8250_clear_fifos(up); in serial8250_do_startup()
2279 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial8250_do_startup()
2281 fctr = serial_in(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX); in serial8250_do_startup()
2299 if ((up->tx_loadsz < 2) || (up->tx_loadsz > port->fifosize)) { in serial8250_do_startup()
2305 port->fifosize - up->tx_loadsz); in serial8250_do_startup()
2311 if (port->irq && (up->port.flags & UPF_SHARE_IRQ)) in serial8250_do_startup()
2312 up->port.irqflags |= IRQF_SHARED; in serial8250_do_startup()
2314 retval = up->ops->setup_irq(up); in serial8250_do_startup()
2318 if (port->irq && !(up->port.flags & UPF_NO_THRE_TEST)) { in serial8250_do_startup()
2334 wait_for_xmitr(up, UART_LSR_THRE); in serial8250_do_startup()
2355 up->port.flags & UPF_BUG_THRE) { in serial8250_do_startup()
2356 up->bugs |= UART_BUG_THRE; in serial8250_do_startup()
2360 up->ops->setup_timer(up); in serial8250_do_startup()
2368 if (up->port.flags & UPF_FOURPORT) { in serial8250_do_startup()
2369 if (!up->port.irq) in serial8250_do_startup()
2370 up->port.mctrl |= TIOCM_OUT1; in serial8250_do_startup()
2376 up->port.mctrl |= TIOCM_OUT2; in serial8250_do_startup()
2391 if (up->port.quirks & UPQ_NO_TXEN_TEST) in serial8250_do_startup()
2404 if (!(up->bugs & UART_BUG_TXEN)) { in serial8250_do_startup()
2405 up->bugs |= UART_BUG_TXEN; in serial8250_do_startup()
2409 up->bugs &= ~UART_BUG_TXEN; in serial8250_do_startup()
2424 up->lsr_saved_flags = 0; in serial8250_do_startup()
2425 up->msr_saved_flags = 0; in serial8250_do_startup()
2430 if (up->dma) { in serial8250_do_startup()
2435 else if (serial8250_request_dma(up)) in serial8250_do_startup()
2439 up->dma = NULL; in serial8250_do_startup()
2448 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial8250_do_startup()
2461 serial8250_rpm_put(up); in serial8250_do_startup()
2475 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_shutdown() local
2478 serial8250_rpm_get(up); in serial8250_do_shutdown()
2483 up->ier = 0; in serial8250_do_shutdown()
2489 if (up->dma) in serial8250_do_shutdown()
2490 serial8250_release_dma(up); in serial8250_do_shutdown()
2508 serial8250_clear_fifos(up); in serial8250_do_shutdown()
2514 disable_rsa(up); in serial8250_do_shutdown()
2522 serial8250_rpm_put(up); in serial8250_do_shutdown()
2524 up->ops->release_irq(up); in serial8250_do_shutdown()
2537 static unsigned int npcm_get_divisor(struct uart_8250_port *up, in npcm_get_divisor() argument
2540 struct uart_port *port = &up->port; in npcm_get_divisor()
2550 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_get_divisor() local
2589 else if (up->port.type == PORT_NPCM) in serial8250_do_get_divisor()
2590 quot = npcm_get_divisor(up, baud); in serial8250_do_get_divisor()
2597 if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0) in serial8250_do_get_divisor()
2613 static unsigned char serial8250_compute_lcr(struct uart_8250_port *up, in serial8250_compute_lcr() argument
2624 if (up->bugs & UART_BUG_PARITY) in serial8250_compute_lcr()
2625 up->fifo_bug = true; in serial8250_compute_lcr()
2638 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_set_divisor() local
2641 if (is_omap1510_8250(up)) { in serial8250_do_set_divisor()
2653 if (up->capabilities & UART_NATSEMI) in serial8250_do_set_divisor()
2656 serial_port_out(port, UART_LCR, up->lcr | UART_LCR_DLAB); in serial8250_do_set_divisor()
2658 serial_dl_write(up, quot); in serial8250_do_set_divisor()
2708 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_update_uartclk() local
2739 serial8250_rpm_get(up); in serial8250_update_uartclk()
2745 serial_port_out(port, UART_LCR, up->lcr); in serial8250_update_uartclk()
2748 serial8250_rpm_put(up); in serial8250_update_uartclk()
2761 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_set_termios() local
2766 if (up->capabilities & UART_CAP_MINI) { in serial8250_do_set_termios()
2772 cval = serial8250_compute_lcr(up, termios->c_cflag); in serial8250_do_set_termios()
2781 serial8250_rpm_get(up); in serial8250_do_set_termios()
2784 up->lcr = cval; /* Save computed LCR */ in serial8250_do_set_termios()
2786 if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) { in serial8250_do_set_termios()
2788 if ((baud < 2400 && !up->dma) || up->fifo_bug) { in serial8250_do_set_termios()
2789 up->fcr &= ~UART_FCR_TRIGGER_MASK; in serial8250_do_set_termios()
2790 up->fcr |= UART_FCR_TRIGGER_1; in serial8250_do_set_termios()
2799 if (up->capabilities & UART_CAP_AFE) { in serial8250_do_set_termios()
2800 up->mcr &= ~UART_MCR_AFE; in serial8250_do_set_termios()
2802 up->mcr |= UART_MCR_AFE; in serial8250_do_set_termios()
2841 up->ier &= ~UART_IER_MSI; in serial8250_do_set_termios()
2842 if (!(up->bugs & UART_BUG_NOMSR) && in serial8250_do_set_termios()
2843 UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial8250_do_set_termios()
2844 up->ier |= UART_IER_MSI; in serial8250_do_set_termios()
2845 if (up->capabilities & UART_CAP_UUE) in serial8250_do_set_termios()
2846 up->ier |= UART_IER_UUE; in serial8250_do_set_termios()
2847 if (up->capabilities & UART_CAP_RTOIE) in serial8250_do_set_termios()
2848 up->ier |= UART_IER_RTOIE; in serial8250_do_set_termios()
2850 serial_port_out(port, UART_IER, up->ier); in serial8250_do_set_termios()
2852 if (up->capabilities & UART_CAP_EFR) { in serial8250_do_set_termios()
2876 serial_port_out(port, UART_FCR, up->fcr); in serial8250_do_set_termios()
2878 serial_port_out(port, UART_LCR, up->lcr); /* reset DLAB */ in serial8250_do_set_termios()
2881 if (up->fcr & UART_FCR_ENABLE_FIFO) in serial8250_do_set_termios()
2883 serial_port_out(port, UART_FCR, up->fcr); /* set fcr */ in serial8250_do_set_termios()
2887 serial8250_rpm_put(up); in serial8250_do_set_termios()
2969 static int serial8250_request_std_resource(struct uart_8250_port *up) in serial8250_request_std_resource() argument
2971 unsigned int size = serial8250_port_size(up); in serial8250_request_std_resource()
2972 struct uart_port *port = &up->port; in serial8250_request_std_resource()
3010 static void serial8250_release_std_resource(struct uart_8250_port *up) in serial8250_release_std_resource() argument
3012 unsigned int size = serial8250_port_size(up); in serial8250_release_std_resource()
3013 struct uart_port *port = &up->port; in serial8250_release_std_resource()
3042 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_release_port() local
3044 serial8250_release_std_resource(up); in serial8250_release_port()
3049 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_request_port() local
3051 return serial8250_request_std_resource(up); in serial8250_request_port()
3054 static int fcr_get_rxtrig_bytes(struct uart_8250_port *up) in fcr_get_rxtrig_bytes() argument
3056 const struct serial8250_config *conf_type = &uart_config[up->port.type]; in fcr_get_rxtrig_bytes()
3059 bytes = conf_type->rxtrig_bytes[UART_FCR_R_TRIG_BITS(up->fcr)]; in fcr_get_rxtrig_bytes()
3064 static int bytes_to_fcr_rxtrig(struct uart_8250_port *up, unsigned char bytes) in bytes_to_fcr_rxtrig() argument
3066 const struct serial8250_config *conf_type = &uart_config[up->port.type]; in bytes_to_fcr_rxtrig()
3085 struct uart_8250_port *up = up_to_u8250p(uport); in do_get_rxtrig() local
3087 if (!(up->capabilities & UART_CAP_FIFO) || uport->fifosize <= 1) in do_get_rxtrig()
3090 return fcr_get_rxtrig_bytes(up); in do_get_rxtrig()
3121 struct uart_8250_port *up = up_to_u8250p(uport); in do_set_rxtrig() local
3124 if (!(up->capabilities & UART_CAP_FIFO) || uport->fifosize <= 1 || in do_set_rxtrig()
3125 up->fifo_bug) in do_set_rxtrig()
3128 rxtrig = bytes_to_fcr_rxtrig(up, bytes); in do_set_rxtrig()
3132 serial8250_clear_fifos(up); in do_set_rxtrig()
3133 up->fcr &= ~UART_FCR_TRIGGER_MASK; in do_set_rxtrig()
3134 up->fcr |= (unsigned char)rxtrig; in do_set_rxtrig()
3135 serial_out(up, UART_FCR, up->fcr); in do_set_rxtrig()
3182 static void register_dev_spec_attr_grp(struct uart_8250_port *up) in register_dev_spec_attr_grp() argument
3184 const struct serial8250_config *conf_type = &uart_config[up->port.type]; in register_dev_spec_attr_grp()
3187 up->port.attr_group = &serial8250_dev_attr_group; in register_dev_spec_attr_grp()
3192 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_config_port() local
3199 ret = serial8250_request_std_resource(up); in serial8250_config_port()
3203 if (port->iotype != up->cur_iotype) in serial8250_config_port()
3207 autoconfig(up); in serial8250_config_port()
3211 up->bugs |= UART_BUG_NOMSR; in serial8250_config_port()
3215 up->bugs |= UART_BUG_NOMSR; in serial8250_config_port()
3218 autoconfig_irq(up); in serial8250_config_port()
3221 serial8250_release_std_resource(up); in serial8250_config_port()
3223 register_dev_spec_attr_grp(up); in serial8250_config_port()
3224 up->fcr = uart_config[up->port.type].fcr; in serial8250_config_port()
3274 void serial8250_init_port(struct uart_8250_port *up) in serial8250_init_port() argument
3276 struct uart_port *port = &up->port; in serial8250_init_port()
3282 up->cur_iotype = 0xFF; in serial8250_init_port()
3286 void serial8250_set_defaults(struct uart_8250_port *up) in serial8250_set_defaults() argument
3288 struct uart_port *port = &up->port; in serial8250_set_defaults()
3290 if (up->port.flags & UPF_FIXED_TYPE) { in serial8250_set_defaults()
3291 unsigned int type = up->port.type; in serial8250_set_defaults()
3293 if (!up->port.fifosize) in serial8250_set_defaults()
3294 up->port.fifosize = uart_config[type].fifo_size; in serial8250_set_defaults()
3295 if (!up->tx_loadsz) in serial8250_set_defaults()
3296 up->tx_loadsz = uart_config[type].tx_loadsz; in serial8250_set_defaults()
3297 if (!up->capabilities) in serial8250_set_defaults()
3298 up->capabilities = uart_config[type].flags; in serial8250_set_defaults()
3304 if (up->dma) { in serial8250_set_defaults()
3305 if (!up->dma->tx_dma) in serial8250_set_defaults()
3306 up->dma->tx_dma = serial8250_tx_dma; in serial8250_set_defaults()
3307 if (!up->dma->rx_dma) in serial8250_set_defaults()
3308 up->dma->rx_dma = serial8250_rx_dma; in serial8250_set_defaults()
3317 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_console_putchar() local
3319 wait_for_xmitr(up, UART_LSR_THRE); in serial8250_console_putchar()
3326 static void serial8250_console_restore(struct uart_8250_port *up) in serial8250_console_restore() argument
3328 struct uart_port *port = &up->port; in serial8250_console_restore()
3345 serial_port_out(port, UART_LCR, up->lcr); in serial8250_console_restore()
3346 serial8250_out_MCR(up, up->mcr | UART_MCR_DTR | UART_MCR_RTS); in serial8250_console_restore()
3355 static void serial8250_console_fifo_write(struct uart_8250_port *up, in serial8250_console_fifo_write() argument
3360 unsigned int fifosize = up->tx_loadsz; in serial8250_console_fifo_write()
3364 wait_for_lsr(up, UART_LSR_THRE); in serial8250_console_fifo_write()
3368 serial_out(up, UART_TX, '\r'); in serial8250_console_fifo_write()
3371 serial_out(up, UART_TX, *s++); in serial8250_console_fifo_write()
3387 void serial8250_console_write(struct uart_8250_port *up, const char *s, in serial8250_console_write() argument
3390 struct uart_8250_em485 *em485 = up->em485; in serial8250_console_write()
3391 struct uart_port *port = &up->port; in serial8250_console_write()
3407 serial8250_clear_IER(up); in serial8250_console_write()
3410 if (up->canary && (up->canary != serial_port_in(port, UART_SCR))) { in serial8250_console_write()
3411 serial8250_console_restore(up); in serial8250_console_write()
3412 up->canary = 0; in serial8250_console_write()
3417 up->rs485_start_tx(up); in serial8250_console_write()
3421 use_fifo = (up->capabilities & UART_CAP_FIFO) && in serial8250_console_write()
3426 !(up->capabilities & UART_CAP_MINI) && in serial8250_console_write()
3430 up->tx_loadsz > 1 && in serial8250_console_write()
3431 (up->fcr & UART_FCR_ENABLE_FIFO) && in serial8250_console_write()
3439 !(up->port.flags & UPF_CONS_FLOW); in serial8250_console_write()
3442 serial8250_console_fifo_write(up, s, count); in serial8250_console_write()
3450 wait_for_xmitr(up, UART_LSR_BOTH_EMPTY); in serial8250_console_write()
3455 up->rs485_stop_tx(up); in serial8250_console_write()
3467 if (up->msr_saved_flags) in serial8250_console_write()
3468 serial8250_modem_status(up); in serial8250_console_write()