Lines Matching full:up
312 static int default_serial_dl_read(struct uart_8250_port *up) in default_serial_dl_read() argument
314 return serial_in(up, UART_DLL) | serial_in(up, UART_DLM) << 8; in default_serial_dl_read()
318 static void default_serial_dl_write(struct uart_8250_port *up, int value) in default_serial_dl_write() argument
320 serial_out(up, UART_DLL, value & 0xff); in default_serial_dl_write()
321 serial_out(up, UART_DLM, value >> 8 & 0xff); in default_serial_dl_write()
370 static int au_serial_dl_read(struct uart_8250_port *up) in au_serial_dl_read() argument
372 return __raw_readl(up->port.membase + 0x28); in au_serial_dl_read()
375 static void au_serial_dl_write(struct uart_8250_port *up, int value) in au_serial_dl_write() argument
377 __raw_writel(value, up->port.membase + 0x28); in au_serial_dl_write()
460 struct uart_8250_port *up = up_to_u8250p(p); in set_io_from_upio() local
462 up->dl_read = default_serial_dl_read; in set_io_from_upio()
463 up->dl_write = default_serial_dl_write; in set_io_from_upio()
495 up->dl_read = au_serial_dl_read; in set_io_from_upio()
496 up->dl_write = au_serial_dl_write; in set_io_from_upio()
506 up->cur_iotype = p->iotype; in set_io_from_upio()
530 static void serial_icr_write(struct uart_8250_port *up, int offset, int value) in serial_icr_write() argument
532 serial_out(up, UART_SCR, offset); in serial_icr_write()
533 serial_out(up, UART_ICR, value); in serial_icr_write()
536 static unsigned int serial_icr_read(struct uart_8250_port *up, int offset) in serial_icr_read() argument
540 serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD); in serial_icr_read()
541 serial_out(up, UART_SCR, offset); in serial_icr_read()
542 value = serial_in(up, UART_ICR); in serial_icr_read()
543 serial_icr_write(up, UART_ACR, up->acr); in serial_icr_read()
669 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_em485_config() local
693 int ret = serial8250_em485_init(up); in serial8250_em485_config()
702 serial8250_em485_destroy(up); in serial8250_em485_config()
776 static int __enable_rsa(struct uart_8250_port *up) in __enable_rsa() argument
781 mode = serial_in(up, UART_RSA_MSR); in __enable_rsa()
785 serial_out(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO); in __enable_rsa()
786 mode = serial_in(up, UART_RSA_MSR); in __enable_rsa()
791 up->port.uartclk = SERIAL_RSA_BAUD_BASE * 16; in __enable_rsa()
796 static void enable_rsa(struct uart_8250_port *up) in enable_rsa() argument
798 if (up->port.type == PORT_RSA) { in enable_rsa()
799 if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) { in enable_rsa()
800 spin_lock_irq(&up->port.lock); in enable_rsa()
801 __enable_rsa(up); in enable_rsa()
802 spin_unlock_irq(&up->port.lock); in enable_rsa()
804 if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) in enable_rsa()
805 serial_out(up, UART_RSA_FRR, 0); in enable_rsa()
815 static void disable_rsa(struct uart_8250_port *up) in disable_rsa() argument
820 if (up->port.type == PORT_RSA && in disable_rsa()
821 up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) { in disable_rsa()
822 spin_lock_irq(&up->port.lock); in disable_rsa()
824 mode = serial_in(up, UART_RSA_MSR); in disable_rsa()
828 serial_out(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO); in disable_rsa()
829 mode = serial_in(up, UART_RSA_MSR); in disable_rsa()
834 up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16; in disable_rsa()
835 spin_unlock_irq(&up->port.lock); in disable_rsa()
844 static int size_fifo(struct uart_8250_port *up) in size_fifo() argument
850 old_lcr = serial_in(up, UART_LCR); in size_fifo()
851 serial_out(up, UART_LCR, 0); in size_fifo()
852 old_fcr = serial_in(up, UART_FCR); in size_fifo()
853 old_mcr = serial8250_in_MCR(up); in size_fifo()
854 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in size_fifo()
856 serial8250_out_MCR(up, UART_MCR_LOOP); in size_fifo()
857 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in size_fifo()
858 old_dl = serial_dl_read(up); in size_fifo()
859 serial_dl_write(up, 0x0001); in size_fifo()
860 serial_out(up, UART_LCR, 0x03); in size_fifo()
862 serial_out(up, UART_TX, count); in size_fifo()
864 for (count = 0; (serial_in(up, UART_LSR) & UART_LSR_DR) && in size_fifo()
866 serial_in(up, UART_RX); in size_fifo()
867 serial_out(up, UART_FCR, old_fcr); in size_fifo()
868 serial8250_out_MCR(up, old_mcr); in size_fifo()
869 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in size_fifo()
870 serial_dl_write(up, old_dl); in size_fifo()
871 serial_out(up, UART_LCR, old_lcr); in size_fifo()
908 static void autoconfig_has_efr(struct uart_8250_port *up) in autoconfig_has_efr() argument
915 up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; in autoconfig_has_efr()
921 * Semiconductor clone chips lock up if you try writing to the in autoconfig_has_efr()
934 up->acr = 0; in autoconfig_has_efr()
935 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in autoconfig_has_efr()
936 serial_out(up, UART_EFR, UART_EFR_ECB); in autoconfig_has_efr()
937 serial_out(up, UART_LCR, 0x00); in autoconfig_has_efr()
938 id1 = serial_icr_read(up, UART_ID1); in autoconfig_has_efr()
939 id2 = serial_icr_read(up, UART_ID2); in autoconfig_has_efr()
940 id3 = serial_icr_read(up, UART_ID3); in autoconfig_has_efr()
941 rev = serial_icr_read(up, UART_REV); in autoconfig_has_efr()
947 up->port.type = PORT_16C950; in autoconfig_has_efr()
955 up->bugs |= UART_BUG_QUOT; in autoconfig_has_efr()
967 id1 = autoconfig_read_divisor_id(up); in autoconfig_has_efr()
972 up->port.type = PORT_16850; in autoconfig_has_efr()
985 if (size_fifo(up) == 64) in autoconfig_has_efr()
986 up->port.type = PORT_16654; in autoconfig_has_efr()
988 up->port.type = PORT_16650V2; in autoconfig_has_efr()
996 static void autoconfig_8250(struct uart_8250_port *up) in autoconfig_8250() argument
1000 up->port.type = PORT_8250; in autoconfig_8250()
1002 scratch = serial_in(up, UART_SCR); in autoconfig_8250()
1003 serial_out(up, UART_SCR, 0xa5); in autoconfig_8250()
1004 status1 = serial_in(up, UART_SCR); in autoconfig_8250()
1005 serial_out(up, UART_SCR, 0x5a); in autoconfig_8250()
1006 status2 = serial_in(up, UART_SCR); in autoconfig_8250()
1007 serial_out(up, UART_SCR, scratch); in autoconfig_8250()
1010 up->port.type = PORT_16450; in autoconfig_8250()
1013 static int broken_efr(struct uart_8250_port *up) in broken_efr() argument
1020 if (autoconfig_read_divisor_id(up) == 0x0201 && size_fifo(up) == 16) in broken_efr()
1032 static void autoconfig_16550a(struct uart_8250_port *up) in autoconfig_16550a() argument
1037 up->port.type = PORT_16550A; in autoconfig_16550a()
1038 up->capabilities |= UART_CAP_FIFO; in autoconfig_16550a()
1047 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in autoconfig_16550a()
1048 if (serial_in(up, UART_EFR) == 0) { in autoconfig_16550a()
1049 serial_out(up, UART_EFR, 0xA8); in autoconfig_16550a()
1050 if (serial_in(up, UART_EFR) != 0) { in autoconfig_16550a()
1052 up->port.type = PORT_16650; in autoconfig_16550a()
1053 up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; in autoconfig_16550a()
1055 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1056 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in autoconfig_16550a()
1058 status1 = serial_in(up, UART_IIR) >> 5; in autoconfig_16550a()
1059 serial_out(up, UART_FCR, 0); in autoconfig_16550a()
1060 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1063 up->port.type = PORT_16550A_FSL64; in autoconfig_16550a()
1067 serial_out(up, UART_EFR, 0); in autoconfig_16550a()
1075 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in autoconfig_16550a()
1076 if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) { in autoconfig_16550a()
1078 autoconfig_has_efr(up); in autoconfig_16550a()
1089 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1090 status1 = serial8250_in_MCR(up); in autoconfig_16550a()
1091 serial_out(up, UART_LCR, 0xE0); in autoconfig_16550a()
1092 status2 = serial_in(up, 0x02); /* EXCR1 */ in autoconfig_16550a()
1095 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1096 serial8250_out_MCR(up, status1 ^ UART_MCR_LOOP); in autoconfig_16550a()
1097 serial_out(up, UART_LCR, 0xE0); in autoconfig_16550a()
1098 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); in autoconfig_16550a()
1105 serial_out(up, UART_LCR, 0xE0); in autoconfig_16550a()
1107 quot = serial_dl_read(up); in autoconfig_16550a()
1110 if (ns16550a_goto_highspeed(up)) in autoconfig_16550a()
1111 serial_dl_write(up, quot); in autoconfig_16550a()
1113 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1115 up->port.uartclk = 921600*16; in autoconfig_16550a()
1116 up->port.type = PORT_NS16550A; in autoconfig_16550a()
1117 up->capabilities |= UART_NATSEMI; in autoconfig_16550a()
1128 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1129 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); in autoconfig_16550a()
1130 status1 = serial_in(up, UART_IIR) >> 5; in autoconfig_16550a()
1131 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in autoconfig_16550a()
1132 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in autoconfig_16550a()
1133 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); in autoconfig_16550a()
1134 status2 = serial_in(up, UART_IIR) >> 5; in autoconfig_16550a()
1135 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in autoconfig_16550a()
1136 serial_out(up, UART_LCR, 0); in autoconfig_16550a()
1141 up->port.type = PORT_16750; in autoconfig_16550a()
1142 up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP; in autoconfig_16550a()
1154 iersave = serial_in(up, UART_IER); in autoconfig_16550a()
1155 serial_out(up, UART_IER, iersave & ~UART_IER_UUE); in autoconfig_16550a()
1156 if (!(serial_in(up, UART_IER) & UART_IER_UUE)) { in autoconfig_16550a()
1161 serial_out(up, UART_IER, iersave | UART_IER_UUE); in autoconfig_16550a()
1162 if (serial_in(up, UART_IER) & UART_IER_UUE) { in autoconfig_16550a()
1168 up->port.type = PORT_XSCALE; in autoconfig_16550a()
1169 up->capabilities |= UART_CAP_UUE | UART_CAP_RTOIE; in autoconfig_16550a()
1179 serial_out(up, UART_IER, iersave); in autoconfig_16550a()
1185 if (up->port.type == PORT_16550A && size_fifo(up) == 64) { in autoconfig_16550a()
1186 up->port.type = PORT_U6_16550A; in autoconfig_16550a()
1187 up->capabilities |= UART_CAP_AFE; in autoconfig_16550a()
1198 static void autoconfig(struct uart_8250_port *up) in autoconfig() argument
1202 struct uart_port *port = &up->port; in autoconfig()
1218 up->capabilities = 0; in autoconfig()
1219 up->bugs = 0; in autoconfig()
1235 scratch = serial_in(up, UART_IER); in autoconfig()
1236 serial_out(up, UART_IER, 0); in autoconfig()
1244 scratch2 = serial_in(up, UART_IER) & 0x0f; in autoconfig()
1245 serial_out(up, UART_IER, 0x0F); in autoconfig()
1249 scratch3 = serial_in(up, UART_IER) & 0x0f; in autoconfig()
1250 serial_out(up, UART_IER, scratch); in autoconfig()
1262 save_mcr = serial8250_in_MCR(up); in autoconfig()
1263 save_lcr = serial_in(up, UART_LCR); in autoconfig()
1275 serial8250_out_MCR(up, UART_MCR_LOOP | 0x0A); in autoconfig()
1276 status1 = serial_in(up, UART_MSR) & 0xF0; in autoconfig()
1277 serial8250_out_MCR(up, save_mcr); in autoconfig()
1295 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in autoconfig()
1296 serial_out(up, UART_EFR, 0); in autoconfig()
1297 serial_out(up, UART_LCR, 0); in autoconfig()
1299 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in autoconfig()
1300 scratch = serial_in(up, UART_IIR) >> 6; in autoconfig()
1304 autoconfig_8250(up); in autoconfig()
1313 autoconfig_16550a(up); in autoconfig()
1321 if (port->type == PORT_16550A && up->probe & UART_PROBE_RSA && in autoconfig()
1322 __enable_rsa(up)) in autoconfig()
1326 serial_out(up, UART_LCR, save_lcr); in autoconfig()
1328 port->fifosize = uart_config[up->port.type].fifo_size; in autoconfig()
1329 old_capabilities = up->capabilities; in autoconfig()
1330 up->capabilities = uart_config[port->type].flags; in autoconfig()
1331 up->tx_loadsz = uart_config[port->type].tx_loadsz; in autoconfig()
1341 serial_out(up, UART_RSA_FRR, 0); in autoconfig()
1343 serial8250_out_MCR(up, save_mcr); in autoconfig()
1344 serial8250_clear_fifos(up); in autoconfig()
1345 serial_in(up, UART_RX); in autoconfig()
1346 if (up->capabilities & UART_CAP_UUE) in autoconfig()
1347 serial_out(up, UART_IER, UART_IER_UUE); in autoconfig()
1349 serial_out(up, UART_IER, 0); in autoconfig()
1358 fintek_8250_probe(up); in autoconfig()
1360 if (up->capabilities != old_capabilities) { in autoconfig()
1362 old_capabilities, up->capabilities); in autoconfig()
1369 static void autoconfig_irq(struct uart_8250_port *up) in autoconfig_irq() argument
1371 struct uart_port *port = &up->port; in autoconfig_irq()
1390 save_mcr = serial8250_in_MCR(up); in autoconfig_irq()
1391 save_ier = serial_in(up, UART_IER); in autoconfig_irq()
1392 serial8250_out_MCR(up, UART_MCR_OUT1 | UART_MCR_OUT2); in autoconfig_irq()
1395 serial8250_out_MCR(up, 0); in autoconfig_irq()
1398 serial8250_out_MCR(up, UART_MCR_DTR | UART_MCR_RTS); in autoconfig_irq()
1400 serial8250_out_MCR(up, in autoconfig_irq()
1403 serial_out(up, UART_IER, 0x0f); /* enable all intrs */ in autoconfig_irq()
1404 serial_in(up, UART_LSR); in autoconfig_irq()
1405 serial_in(up, UART_RX); in autoconfig_irq()
1406 serial_in(up, UART_IIR); in autoconfig_irq()
1407 serial_in(up, UART_MSR); in autoconfig_irq()
1408 serial_out(up, UART_TX, 0xFF); in autoconfig_irq()
1412 serial8250_out_MCR(up, save_mcr); in autoconfig_irq()
1413 serial_out(up, UART_IER, save_ier); in autoconfig_irq()
1426 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_stop_rx() local
1428 serial8250_rpm_get(up); in serial8250_stop_rx()
1430 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial8250_stop_rx()
1431 up->port.read_status_mask &= ~UART_LSR_DR; in serial8250_stop_rx()
1432 serial_port_out(port, UART_IER, up->ier); in serial8250_stop_rx()
1434 serial8250_rpm_put(up); in serial8250_stop_rx()
1544 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_stop_tx() local
1546 serial8250_rpm_get(up); in serial8250_stop_tx()
1547 __stop_tx(up); in serial8250_stop_tx()
1553 up->acr |= UART_ACR_TXDIS; in serial8250_stop_tx()
1554 serial_icr_write(up, UART_ACR, up->acr); in serial8250_stop_tx()
1556 serial8250_rpm_put(up); in serial8250_stop_tx()
1561 struct uart_8250_port *up = up_to_u8250p(port); in __start_tx() local
1563 if (up->dma && !up->dma->tx_dma(up)) in __start_tx()
1566 if (serial8250_set_THRI(up)) { in __start_tx()
1567 if (up->bugs & UART_BUG_TXEN) { in __start_tx()
1570 lsr = serial_in(up, UART_LSR); in __start_tx()
1571 up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; in __start_tx()
1573 serial8250_tx_chars(up); in __start_tx()
1580 if (port->type == PORT_16C950 && up->acr & UART_ACR_TXDIS) { in __start_tx()
1581 up->acr &= ~UART_ACR_TXDIS; in __start_tx()
1582 serial_icr_write(up, UART_ACR, up->acr); in __start_tx()
1588 * @up: uart 8250 port
1596 void serial8250_em485_start_tx(struct uart_8250_port *up) in serial8250_em485_start_tx() argument
1598 unsigned char mcr = serial8250_in_MCR(up); in serial8250_em485_start_tx()
1600 if (!(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in serial8250_em485_start_tx()
1601 serial8250_stop_rx(&up->port); in serial8250_em485_start_tx()
1603 if (up->port.rs485.flags & SER_RS485_RTS_ON_SEND) in serial8250_em485_start_tx()
1607 serial8250_out_MCR(up, mcr); in serial8250_em485_start_tx()
1613 struct uart_8250_port *up = up_to_u8250p(port); in start_tx_rs485() local
1614 struct uart_8250_em485 *em485 = up->em485; in start_tx_rs485()
1621 up->rs485_start_tx(up); in start_tx_rs485()
1623 if (up->port.rs485.delay_rts_before_send > 0) { in start_tx_rs485()
1626 up->port.rs485.delay_rts_before_send); in start_tx_rs485()
1654 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_start_tx() local
1655 struct uart_8250_em485 *em485 = up->em485; in serial8250_start_tx()
1657 serial8250_rpm_get_tx(up); in serial8250_start_tx()
1681 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_disable_ms() local
1684 if (up->bugs & UART_BUG_NOMSR) in serial8250_disable_ms()
1687 mctrl_gpio_disable_ms(up->gpios); in serial8250_disable_ms()
1689 up->ier &= ~UART_IER_MSI; in serial8250_disable_ms()
1690 serial_port_out(port, UART_IER, up->ier); in serial8250_disable_ms()
1695 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_enable_ms() local
1698 if (up->bugs & UART_BUG_NOMSR) in serial8250_enable_ms()
1701 mctrl_gpio_enable_ms(up->gpios); in serial8250_enable_ms()
1703 up->ier |= UART_IER_MSI; in serial8250_enable_ms()
1705 serial8250_rpm_get(up); in serial8250_enable_ms()
1706 serial_port_out(port, UART_IER, up->ier); in serial8250_enable_ms()
1707 serial8250_rpm_put(up); in serial8250_enable_ms()
1710 void serial8250_read_char(struct uart_8250_port *up, unsigned char lsr) in serial8250_read_char() argument
1712 struct uart_port *port = &up->port; in serial8250_read_char()
1717 ch = serial_in(up, UART_RX); in serial8250_read_char()
1730 lsr |= up->lsr_saved_flags; in serial8250_read_char()
1731 up->lsr_saved_flags = 0; in serial8250_read_char()
1777 unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr) in serial8250_rx_chars() argument
1779 struct uart_port *port = &up->port; in serial8250_rx_chars()
1783 serial8250_read_char(up, lsr); in serial8250_rx_chars()
1786 lsr = serial_in(up, UART_LSR); in serial8250_rx_chars()
1794 void serial8250_tx_chars(struct uart_8250_port *up) in serial8250_tx_chars() argument
1796 struct uart_port *port = &up->port; in serial8250_tx_chars()
1801 serial_out(up, UART_TX, port->x_char); in serial8250_tx_chars()
1811 __stop_tx(up); in serial8250_tx_chars()
1815 count = up->tx_loadsz; in serial8250_tx_chars()
1817 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in serial8250_tx_chars()
1822 if ((up->capabilities & UART_CAP_HFIFO) && in serial8250_tx_chars()
1823 (serial_in(up, UART_LSR) & BOTH_EMPTY) != BOTH_EMPTY) in serial8250_tx_chars()
1826 if ((up->capabilities & UART_CAP_MINI) && in serial8250_tx_chars()
1827 !(serial_in(up, UART_LSR) & UART_LSR_THRE)) in serial8250_tx_chars()
1839 if (uart_circ_empty(xmit) && !(up->capabilities & UART_CAP_RPM)) in serial8250_tx_chars()
1840 __stop_tx(up); in serial8250_tx_chars()
1845 unsigned int serial8250_modem_status(struct uart_8250_port *up) in serial8250_modem_status() argument
1847 struct uart_port *port = &up->port; in serial8250_modem_status()
1848 unsigned int status = serial_in(up, UART_MSR); in serial8250_modem_status()
1850 status |= up->msr_saved_flags; in serial8250_modem_status()
1851 up->msr_saved_flags = 0; in serial8250_modem_status()
1852 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in serial8250_modem_status()
1870 static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) in handle_rx_dma() argument
1874 serial8250_rx_dma_flush(up); in handle_rx_dma()
1879 return up->dma->rx_dma(up); in handle_rx_dma()
1889 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_handle_irq() local
1913 if (!up->dma || handle_rx_dma(up, iir)) in serial8250_handle_irq()
1914 status = serial8250_rx_chars(up, status); in serial8250_handle_irq()
1916 serial8250_modem_status(up); in serial8250_handle_irq()
1917 if ((!up->dma || up->dma->tx_err) && (status & UART_LSR_THRE) && in serial8250_handle_irq()
1918 (up->ier & UART_IER_THRI)) in serial8250_handle_irq()
1919 serial8250_tx_chars(up); in serial8250_handle_irq()
1928 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_default_handle_irq() local
1932 serial8250_rpm_get(up); in serial8250_default_handle_irq()
1937 serial8250_rpm_put(up); in serial8250_default_handle_irq()
1945 * has space available. Load it up with tx_loadsz bytes.
1952 /* TX Threshold IRQ triggered so load up FIFO */ in serial8250_tx_threshold_handle_irq()
1954 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_tx_threshold_handle_irq() local
1957 serial8250_tx_chars(up); in serial8250_tx_threshold_handle_irq()
1967 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_tx_empty() local
1971 serial8250_rpm_get(up); in serial8250_tx_empty()
1975 up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; in serial8250_tx_empty()
1978 serial8250_rpm_put(up); in serial8250_tx_empty()
1985 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_get_mctrl() local
1989 serial8250_rpm_get(up); in serial8250_do_get_mctrl()
1990 status = serial8250_modem_status(up); in serial8250_do_get_mctrl()
1991 serial8250_rpm_put(up); in serial8250_do_get_mctrl()
1994 if (up->gpios) in serial8250_do_get_mctrl()
1995 return mctrl_gpio_get(up->gpios, &val); in serial8250_do_get_mctrl()
2010 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_set_mctrl() local
2014 if (serial8250_in_MCR(up) & UART_MCR_RTS) in serial8250_do_set_mctrl()
2022 mcr = (mcr & up->mcr_mask) | up->mcr_force | up->mcr; in serial8250_do_set_mctrl()
2024 serial8250_out_MCR(up, mcr); in serial8250_do_set_mctrl()
2038 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_break_ctl() local
2041 serial8250_rpm_get(up); in serial8250_break_ctl()
2044 up->lcr |= UART_LCR_SBC; in serial8250_break_ctl()
2046 up->lcr &= ~UART_LCR_SBC; in serial8250_break_ctl()
2047 serial_port_out(port, UART_LCR, up->lcr); in serial8250_break_ctl()
2049 serial8250_rpm_put(up); in serial8250_break_ctl()
2055 static void wait_for_xmitr(struct uart_8250_port *up, int bits) in wait_for_xmitr() argument
2059 /* Wait up to 10ms for the character(s) to be sent. */ in wait_for_xmitr()
2061 status = serial_in(up, UART_LSR); in wait_for_xmitr()
2063 up->lsr_saved_flags |= status & LSR_SAVE_FLAGS; in wait_for_xmitr()
2073 /* Wait up to 1s for flow control if necessary */ in wait_for_xmitr()
2074 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
2076 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
2077 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
2094 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_get_poll_char() local
2098 serial8250_rpm_get(up); in serial8250_get_poll_char()
2109 serial8250_rpm_put(up); in serial8250_get_poll_char()
2118 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_put_poll_char() local
2120 serial8250_rpm_get(up); in serial8250_put_poll_char()
2125 if (up->capabilities & UART_CAP_UUE) in serial8250_put_poll_char()
2130 wait_for_xmitr(up, BOTH_EMPTY); in serial8250_put_poll_char()
2140 wait_for_xmitr(up, BOTH_EMPTY); in serial8250_put_poll_char()
2142 serial8250_rpm_put(up); in serial8250_put_poll_char()
2149 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_startup() local
2156 if (!up->tx_loadsz) in serial8250_do_startup()
2157 up->tx_loadsz = uart_config[port->type].tx_loadsz; in serial8250_do_startup()
2158 if (!up->capabilities) in serial8250_do_startup()
2159 up->capabilities = uart_config[port->type].flags; in serial8250_do_startup()
2160 up->mcr = 0; in serial8250_do_startup()
2162 if (port->iotype != up->cur_iotype) in serial8250_do_startup()
2165 serial8250_rpm_get(up); in serial8250_do_startup()
2167 /* Wake up and initialize UART */ in serial8250_do_startup()
2168 up->acr = 0; in serial8250_do_startup()
2173 serial_icr_write(up, UART_CSR, 0); /* Reset the UART */ in serial8250_do_startup()
2203 * If this is an RSA port, see if we can kick it up to the in serial8250_do_startup()
2206 enable_rsa(up); in serial8250_do_startup()
2213 serial8250_clear_fifos(up); in serial8250_do_startup()
2241 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial8250_do_startup()
2243 fctr = serial_in(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX); in serial8250_do_startup()
2261 if ((up->tx_loadsz < 2) || (up->tx_loadsz > port->fifosize)) { in serial8250_do_startup()
2267 port->fifosize - up->tx_loadsz); in serial8250_do_startup()
2273 if (port->irq && (up->port.flags & UPF_SHARE_IRQ)) in serial8250_do_startup()
2274 up->port.irqflags |= IRQF_SHARED; in serial8250_do_startup()
2276 if (port->irq && !(up->port.flags & UPF_NO_THRE_TEST)) { in serial8250_do_startup()
2292 wait_for_xmitr(up, UART_LSR_THRE); in serial8250_do_startup()
2313 up->port.flags & UPF_BUG_THRE) { in serial8250_do_startup()
2314 up->bugs |= UART_BUG_THRE; in serial8250_do_startup()
2318 retval = up->ops->setup_irq(up); in serial8250_do_startup()
2328 if (up->port.flags & UPF_FOURPORT) { in serial8250_do_startup()
2329 if (!up->port.irq) in serial8250_do_startup()
2330 up->port.mctrl |= TIOCM_OUT1; in serial8250_do_startup()
2336 up->port.mctrl |= TIOCM_OUT2; in serial8250_do_startup()
2351 if (up->port.quirks & UPQ_NO_TXEN_TEST) in serial8250_do_startup()
2364 if (!(up->bugs & UART_BUG_TXEN)) { in serial8250_do_startup()
2365 up->bugs |= UART_BUG_TXEN; in serial8250_do_startup()
2369 up->bugs &= ~UART_BUG_TXEN; in serial8250_do_startup()
2384 up->lsr_saved_flags = 0; in serial8250_do_startup()
2385 up->msr_saved_flags = 0; in serial8250_do_startup()
2390 if (up->dma) { in serial8250_do_startup()
2395 else if (serial8250_request_dma(up)) in serial8250_do_startup()
2399 up->dma = NULL; in serial8250_do_startup()
2408 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial8250_do_startup()
2421 serial8250_rpm_put(up); in serial8250_do_startup()
2435 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_shutdown() local
2438 serial8250_rpm_get(up); in serial8250_do_shutdown()
2443 up->ier = 0; in serial8250_do_shutdown()
2449 if (up->dma) in serial8250_do_shutdown()
2450 serial8250_release_dma(up); in serial8250_do_shutdown()
2468 serial8250_clear_fifos(up); in serial8250_do_shutdown()
2474 disable_rsa(up); in serial8250_do_shutdown()
2482 serial8250_rpm_put(up); in serial8250_do_shutdown()
2484 up->ops->release_irq(up); in serial8250_do_shutdown()
2497 static unsigned int npcm_get_divisor(struct uart_8250_port *up, in npcm_get_divisor() argument
2500 struct uart_port *port = &up->port; in npcm_get_divisor()
2509 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_get_divisor() local
2523 else if (up->port.type == PORT_NPCM) in serial8250_do_get_divisor()
2524 quot = npcm_get_divisor(up, baud); in serial8250_do_get_divisor()
2531 if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0) in serial8250_do_get_divisor()
2547 static unsigned char serial8250_compute_lcr(struct uart_8250_port *up, in serial8250_compute_lcr() argument
2572 if (up->bugs & UART_BUG_PARITY) in serial8250_compute_lcr()
2573 up->fifo_bug = true; in serial8250_compute_lcr()
2588 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_set_divisor() local
2591 if (is_omap1510_8250(up)) { in serial8250_do_set_divisor()
2603 if (up->capabilities & UART_NATSEMI) in serial8250_do_set_divisor()
2606 serial_port_out(port, UART_LCR, up->lcr | UART_LCR_DLAB); in serial8250_do_set_divisor()
2608 serial_dl_write(up, quot); in serial8250_do_set_divisor()
2645 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_update_uartclk() local
2665 serial8250_rpm_get(up); in serial8250_update_uartclk()
2671 serial_port_out(port, UART_LCR, up->lcr); in serial8250_update_uartclk()
2674 serial8250_rpm_put(up); in serial8250_update_uartclk()
2685 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_do_set_termios() local
2690 if (up->capabilities & UART_CAP_MINI) { in serial8250_do_set_termios()
2696 cval = serial8250_compute_lcr(up, termios->c_cflag); in serial8250_do_set_termios()
2705 serial8250_rpm_get(up); in serial8250_do_set_termios()
2708 up->lcr = cval; /* Save computed LCR */ in serial8250_do_set_termios()
2710 if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) { in serial8250_do_set_termios()
2712 if ((baud < 2400 && !up->dma) || up->fifo_bug) { in serial8250_do_set_termios()
2713 up->fcr &= ~UART_FCR_TRIGGER_MASK; in serial8250_do_set_termios()
2714 up->fcr |= UART_FCR_TRIGGER_1; in serial8250_do_set_termios()
2723 if (up->capabilities & UART_CAP_AFE) { in serial8250_do_set_termios()
2724 up->mcr &= ~UART_MCR_AFE; in serial8250_do_set_termios()
2726 up->mcr |= UART_MCR_AFE; in serial8250_do_set_termios()
2765 up->ier &= ~UART_IER_MSI; in serial8250_do_set_termios()
2766 if (!(up->bugs & UART_BUG_NOMSR) && in serial8250_do_set_termios()
2767 UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial8250_do_set_termios()
2768 up->ier |= UART_IER_MSI; in serial8250_do_set_termios()
2769 if (up->capabilities & UART_CAP_UUE) in serial8250_do_set_termios()
2770 up->ier |= UART_IER_UUE; in serial8250_do_set_termios()
2771 if (up->capabilities & UART_CAP_RTOIE) in serial8250_do_set_termios()
2772 up->ier |= UART_IER_RTOIE; in serial8250_do_set_termios()
2774 serial_port_out(port, UART_IER, up->ier); in serial8250_do_set_termios()
2776 if (up->capabilities & UART_CAP_EFR) { in serial8250_do_set_termios()
2800 serial_port_out(port, UART_FCR, up->fcr); in serial8250_do_set_termios()
2802 serial_port_out(port, UART_LCR, up->lcr); /* reset DLAB */ in serial8250_do_set_termios()
2805 if (up->fcr & UART_FCR_ENABLE_FIFO) in serial8250_do_set_termios()
2807 serial_port_out(port, UART_FCR, up->fcr); /* set fcr */ in serial8250_do_set_termios()
2811 serial8250_rpm_put(up); in serial8250_do_set_termios()
2893 static int serial8250_request_std_resource(struct uart_8250_port *up) in serial8250_request_std_resource() argument
2895 unsigned int size = serial8250_port_size(up); in serial8250_request_std_resource()
2896 struct uart_port *port = &up->port; in serial8250_request_std_resource()
2932 static void serial8250_release_std_resource(struct uart_8250_port *up) in serial8250_release_std_resource() argument
2934 unsigned int size = serial8250_port_size(up); in serial8250_release_std_resource()
2935 struct uart_port *port = &up->port; in serial8250_release_std_resource()
2964 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_release_port() local
2966 serial8250_release_std_resource(up); in serial8250_release_port()
2971 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_request_port() local
2973 return serial8250_request_std_resource(up); in serial8250_request_port()
2976 static int fcr_get_rxtrig_bytes(struct uart_8250_port *up) in fcr_get_rxtrig_bytes() argument
2978 const struct serial8250_config *conf_type = &uart_config[up->port.type]; in fcr_get_rxtrig_bytes()
2981 bytes = conf_type->rxtrig_bytes[UART_FCR_R_TRIG_BITS(up->fcr)]; in fcr_get_rxtrig_bytes()
2986 static int bytes_to_fcr_rxtrig(struct uart_8250_port *up, unsigned char bytes) in bytes_to_fcr_rxtrig() argument
2988 const struct serial8250_config *conf_type = &uart_config[up->port.type]; in bytes_to_fcr_rxtrig()
3007 struct uart_8250_port *up = up_to_u8250p(uport); in do_get_rxtrig() local
3009 if (!(up->capabilities & UART_CAP_FIFO) || uport->fifosize <= 1) in do_get_rxtrig()
3012 return fcr_get_rxtrig_bytes(up); in do_get_rxtrig()
3043 struct uart_8250_port *up = up_to_u8250p(uport); in do_set_rxtrig() local
3046 if (!(up->capabilities & UART_CAP_FIFO) || uport->fifosize <= 1 || in do_set_rxtrig()
3047 up->fifo_bug) in do_set_rxtrig()
3050 rxtrig = bytes_to_fcr_rxtrig(up, bytes); in do_set_rxtrig()
3054 serial8250_clear_fifos(up); in do_set_rxtrig()
3055 up->fcr &= ~UART_FCR_TRIGGER_MASK; in do_set_rxtrig()
3056 up->fcr |= (unsigned char)rxtrig; in do_set_rxtrig()
3057 serial_out(up, UART_FCR, up->fcr); in do_set_rxtrig()
3104 static void register_dev_spec_attr_grp(struct uart_8250_port *up) in register_dev_spec_attr_grp() argument
3106 const struct serial8250_config *conf_type = &uart_config[up->port.type]; in register_dev_spec_attr_grp()
3109 up->port.attr_group = &serial8250_dev_attr_group; in register_dev_spec_attr_grp()
3114 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_config_port() local
3121 ret = serial8250_request_std_resource(up); in serial8250_config_port()
3125 if (port->iotype != up->cur_iotype) in serial8250_config_port()
3129 autoconfig(up); in serial8250_config_port()
3136 up->bugs |= UART_BUG_NOMSR; in serial8250_config_port()
3140 up->bugs |= UART_BUG_NOMSR; in serial8250_config_port()
3143 autoconfig_irq(up); in serial8250_config_port()
3146 serial8250_release_std_resource(up); in serial8250_config_port()
3148 register_dev_spec_attr_grp(up); in serial8250_config_port()
3149 up->fcr = uart_config[up->port.type].fcr; in serial8250_config_port()
3199 void serial8250_init_port(struct uart_8250_port *up) in serial8250_init_port() argument
3201 struct uart_port *port = &up->port; in serial8250_init_port()
3207 up->cur_iotype = 0xFF; in serial8250_init_port()
3211 void serial8250_set_defaults(struct uart_8250_port *up) in serial8250_set_defaults() argument
3213 struct uart_port *port = &up->port; in serial8250_set_defaults()
3215 if (up->port.flags & UPF_FIXED_TYPE) { in serial8250_set_defaults()
3216 unsigned int type = up->port.type; in serial8250_set_defaults()
3218 if (!up->port.fifosize) in serial8250_set_defaults()
3219 up->port.fifosize = uart_config[type].fifo_size; in serial8250_set_defaults()
3220 if (!up->tx_loadsz) in serial8250_set_defaults()
3221 up->tx_loadsz = uart_config[type].tx_loadsz; in serial8250_set_defaults()
3222 if (!up->capabilities) in serial8250_set_defaults()
3223 up->capabilities = uart_config[type].flags; in serial8250_set_defaults()
3229 if (up->dma) { in serial8250_set_defaults()
3230 if (!up->dma->tx_dma) in serial8250_set_defaults()
3231 up->dma->tx_dma = serial8250_tx_dma; in serial8250_set_defaults()
3232 if (!up->dma->rx_dma) in serial8250_set_defaults()
3233 up->dma->rx_dma = serial8250_rx_dma; in serial8250_set_defaults()
3242 struct uart_8250_port *up = up_to_u8250p(port); in serial8250_console_putchar() local
3244 wait_for_xmitr(up, UART_LSR_THRE); in serial8250_console_putchar()
3251 static void serial8250_console_restore(struct uart_8250_port *up) in serial8250_console_restore() argument
3253 struct uart_port *port = &up->port; in serial8250_console_restore()
3265 serial_port_out(port, UART_LCR, up->lcr); in serial8250_console_restore()
3266 serial8250_out_MCR(up, UART_MCR_DTR | UART_MCR_RTS); in serial8250_console_restore()
3276 * Thus, we assume the function is called when device is powered up.
3278 void serial8250_console_write(struct uart_8250_port *up, const char *s, in serial8250_console_write() argument
3281 struct uart_8250_em485 *em485 = up->em485; in serial8250_console_write()
3282 struct uart_port *port = &up->port; in serial8250_console_write()
3299 if (up->capabilities & UART_CAP_UUE) in serial8250_console_write()
3305 if (up->canary && (up->canary != serial_port_in(port, UART_SCR))) { in serial8250_console_write()
3306 serial8250_console_restore(up); in serial8250_console_write()
3307 up->canary = 0; in serial8250_console_write()
3312 up->rs485_start_tx(up); in serial8250_console_write()
3322 wait_for_xmitr(up, BOTH_EMPTY); in serial8250_console_write()
3327 up->rs485_stop_tx(up); in serial8250_console_write()
3339 if (up->msr_saved_flags) in serial8250_console_write()
3340 serial8250_modem_status(up); in serial8250_console_write()