Lines Matching refs:up
124 static u32 uart_read(struct uart_8250_port *up, u32 reg) in uart_read() argument
126 return readl(up->port.membase + (reg << up->port.regshift)); in uart_read()
131 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_set_mctrl() local
132 struct omap8250_priv *priv = up->port.private_data; in omap8250_set_mctrl()
141 lcr = serial_in(up, UART_LCR); in omap8250_set_mctrl()
142 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_set_mctrl()
147 serial_out(up, UART_EFR, priv->efr); in omap8250_set_mctrl()
148 serial_out(up, UART_LCR, lcr); in omap8250_set_mctrl()
160 static void omap_8250_mdr1_errataset(struct uart_8250_port *up, in omap_8250_mdr1_errataset() argument
166 old_mdr1 = serial_in(up, UART_OMAP_MDR1); in omap_8250_mdr1_errataset()
170 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap_8250_mdr1_errataset()
172 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in omap_8250_mdr1_errataset()
178 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in omap_8250_mdr1_errataset()
183 dev_crit(up->port.dev, "Errata i202: timedout %x\n", in omap_8250_mdr1_errataset()
184 serial_in(up, UART_LSR)); in omap_8250_mdr1_errataset()
234 static void omap8250_update_scr(struct uart_8250_port *up, in omap8250_update_scr() argument
239 old_scr = serial_in(up, UART_OMAP_SCR); in omap8250_update_scr()
249 serial_out(up, UART_OMAP_SCR, in omap8250_update_scr()
251 serial_out(up, UART_OMAP_SCR, priv->scr); in omap8250_update_scr()
254 static void omap8250_update_mdr1(struct uart_8250_port *up, in omap8250_update_mdr1() argument
258 omap_8250_mdr1_errataset(up, priv); in omap8250_update_mdr1()
260 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap8250_update_mdr1()
263 static void omap8250_restore_regs(struct uart_8250_port *up) in omap8250_restore_regs() argument
265 struct omap8250_priv *priv = up->port.private_data; in omap8250_restore_regs()
266 struct uart_8250_dma *dma = up->dma; in omap8250_restore_regs()
279 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
280 serial_out(up, UART_EFR, UART_EFR_ECB); in omap8250_restore_regs()
282 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in omap8250_restore_regs()
283 serial8250_out_MCR(up, UART_MCR_TCRTLR); in omap8250_restore_regs()
284 serial_out(up, UART_FCR, up->fcr); in omap8250_restore_regs()
286 omap8250_update_scr(up, priv); in omap8250_restore_regs()
288 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
290 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_RESTORE(16) | in omap8250_restore_regs()
292 serial_out(up, UART_TI752_TLR, in omap8250_restore_regs()
296 serial_out(up, UART_LCR, 0); in omap8250_restore_regs()
299 serial8250_out_MCR(up, up->mcr); in omap8250_restore_regs()
300 serial_out(up, UART_IER, up->ier); in omap8250_restore_regs()
302 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
303 serial_dl_write(up, priv->quot); in omap8250_restore_regs()
305 serial_out(up, UART_EFR, priv->efr); in omap8250_restore_regs()
308 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
309 serial_out(up, UART_XON1, priv->xon); in omap8250_restore_regs()
310 serial_out(up, UART_XOFF1, priv->xoff); in omap8250_restore_regs()
312 serial_out(up, UART_LCR, up->lcr); in omap8250_restore_regs()
314 omap8250_update_mdr1(up, priv); in omap8250_restore_regs()
316 up->port.ops->set_mctrl(&up->port, up->port.mctrl); in omap8250_restore_regs()
327 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_set_termios() local
328 struct omap8250_priv *priv = up->port.private_data; in omap_8250_set_termios()
377 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in omap_8250_set_termios()
379 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in omap_8250_set_termios()
381 up->port.read_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
386 up->port.ignore_status_mask = 0; in omap_8250_set_termios()
388 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in omap_8250_set_termios()
390 up->port.ignore_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
396 up->port.ignore_status_mask |= UART_LSR_OE; in omap_8250_set_termios()
403 up->port.ignore_status_mask |= UART_LSR_DR; in omap_8250_set_termios()
408 up->ier &= ~UART_IER_MSI; in omap_8250_set_termios()
409 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in omap_8250_set_termios()
410 up->ier |= UART_IER_MSI; in omap_8250_set_termios()
412 up->lcr = cval; in omap_8250_set_termios()
432 up->fcr = UART_FCR_ENABLE_FIFO; in omap_8250_set_termios()
433 up->fcr |= TRIGGER_FCR_MASK(TX_TRIGGER) << OMAP_UART_FCR_TX_TRIG; in omap_8250_set_termios()
434 up->fcr |= TRIGGER_FCR_MASK(RX_TRIGGER) << OMAP_UART_FCR_RX_TRIG; in omap_8250_set_termios()
439 if (up->dma) in omap_8250_set_termios()
447 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in omap_8250_set_termios()
449 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { in omap_8250_set_termios()
451 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in omap_8250_set_termios()
453 } else if (up->port.flags & UPF_SOFT_FLOW) { in omap_8250_set_termios()
465 up->port.status |= UPSTAT_AUTOXOFF; in omap_8250_set_termios()
469 omap8250_restore_regs(up); in omap_8250_set_termios()
471 spin_unlock_irq(&up->port.lock); in omap_8250_set_termios()
490 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_pm() local
494 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
495 efr = serial_in(up, UART_EFR); in omap_8250_pm()
496 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in omap_8250_pm()
497 serial_out(up, UART_LCR, 0); in omap_8250_pm()
499 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in omap_8250_pm()
500 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
501 serial_out(up, UART_EFR, efr); in omap_8250_pm()
502 serial_out(up, UART_LCR, 0); in omap_8250_pm()
508 static void omap_serial_fill_features_erratas(struct uart_8250_port *up, in omap_serial_fill_features_erratas() argument
514 mvr = uart_read(up, UART_OMAP_MVER); in omap_serial_fill_features_erratas()
534 dev_warn(up->port.dev, in omap_serial_fill_features_erratas()
575 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_irq() local
580 if (up->dma) { in omap8250_irq()
586 serial8250_rpm_get(up); in omap8250_irq()
589 serial8250_rpm_put(up); in omap8250_irq()
596 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_startup() local
608 up->mcr = 0; in omap_8250_startup()
609 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_startup()
611 serial_out(up, UART_LCR, UART_LCR_WLEN8); in omap_8250_startup()
613 up->lsr_saved_flags = 0; in omap_8250_startup()
614 up->msr_saved_flags = 0; in omap_8250_startup()
618 up->dma = NULL; in omap_8250_startup()
620 if (up->dma) { in omap_8250_startup()
621 ret = serial8250_request_dma(up); in omap_8250_startup()
625 up->dma = NULL; in omap_8250_startup()
634 up->ier = UART_IER_RLSI | UART_IER_RDI; in omap_8250_startup()
635 serial_out(up, UART_IER, up->ier); in omap_8250_startup()
638 up->capabilities |= UART_CAP_RPM; in omap_8250_startup()
645 serial_out(up, UART_OMAP_WER, priv->wer); in omap_8250_startup()
647 if (up->dma) in omap_8250_startup()
648 up->dma->rx_dma(up); in omap_8250_startup()
662 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_shutdown() local
666 if (up->dma) in omap_8250_shutdown()
667 omap_8250_rx_dma_flush(up); in omap_8250_shutdown()
671 serial_out(up, UART_OMAP_WER, 0); in omap_8250_shutdown()
673 up->ier = 0; in omap_8250_shutdown()
674 serial_out(up, UART_IER, 0); in omap_8250_shutdown()
676 if (up->dma) in omap_8250_shutdown()
677 serial8250_release_dma(up); in omap_8250_shutdown()
682 if (up->lcr & UART_LCR_SBC) in omap_8250_shutdown()
683 serial_out(up, UART_LCR, up->lcr & ~UART_LCR_SBC); in omap_8250_shutdown()
684 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_shutdown()
694 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_throttle() local
700 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in omap_8250_throttle()
701 serial_out(up, UART_IER, up->ier); in omap_8250_throttle()
711 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_rs485_config() local
724 int ret = serial8250_em485_init(up); in omap_8250_rs485_config()
733 serial8250_em485_destroy(up); in omap_8250_rs485_config()
740 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_unthrottle() local
746 up->ier |= UART_IER_RLSI | UART_IER_RDI; in omap_8250_unthrottle()
747 serial_out(up, UART_IER, up->ier); in omap_8250_unthrottle()
998 static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) in handle_rx_dma() argument
1004 omap_8250_rx_dma_flush(up); in handle_rx_dma()
1007 return omap_8250_rx_dma(up); in handle_rx_dma()
1017 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_dma_handle_irq() local
1022 serial8250_rpm_get(up); in omap_8250_dma_handle_irq()
1026 serial8250_rpm_put(up); in omap_8250_dma_handle_irq()
1035 if (handle_rx_dma(up, iir)) { in omap_8250_dma_handle_irq()
1036 status = serial8250_rx_chars(up, status); in omap_8250_dma_handle_irq()
1037 omap_8250_rx_dma(up); in omap_8250_dma_handle_irq()
1040 serial8250_modem_status(up); in omap_8250_dma_handle_irq()
1041 if (status & UART_LSR_THRE && up->dma->tx_err) { in omap_8250_dma_handle_irq()
1042 if (uart_tx_stopped(&up->port) || in omap_8250_dma_handle_irq()
1043 uart_circ_empty(&up->port.state->xmit)) { in omap_8250_dma_handle_irq()
1044 up->dma->tx_err = 0; in omap_8250_dma_handle_irq()
1045 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1051 if (omap_8250_tx_dma(up)) in omap_8250_dma_handle_irq()
1052 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1057 serial8250_rpm_put(up); in omap_8250_dma_handle_irq()
1100 struct uart_8250_port up; in omap8250_probe() local
1118 memset(&up, 0, sizeof(up)); in omap8250_probe()
1119 up.port.dev = &pdev->dev; in omap8250_probe()
1120 up.port.mapbase = regs->start; in omap8250_probe()
1121 up.port.membase = membase; in omap8250_probe()
1122 up.port.irq = irq->start; in omap8250_probe()
1131 up.port.type = PORT_8250; in omap8250_probe()
1132 up.port.iotype = UPIO_MEM; in omap8250_probe()
1133 up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SOFT_FLOW | in omap8250_probe()
1135 up.port.private_data = priv; in omap8250_probe()
1137 up.port.regshift = 2; in omap8250_probe()
1138 up.port.fifosize = 64; in omap8250_probe()
1139 up.tx_loadsz = 64; in omap8250_probe()
1140 up.capabilities = UART_CAP_FIFO; in omap8250_probe()
1148 up.capabilities |= UART_CAP_RPM; in omap8250_probe()
1150 up.port.set_termios = omap_8250_set_termios; in omap8250_probe()
1151 up.port.set_mctrl = omap8250_set_mctrl; in omap8250_probe()
1152 up.port.pm = omap_8250_pm; in omap8250_probe()
1153 up.port.startup = omap_8250_startup; in omap8250_probe()
1154 up.port.shutdown = omap_8250_shutdown; in omap8250_probe()
1155 up.port.throttle = omap_8250_throttle; in omap8250_probe()
1156 up.port.unthrottle = omap_8250_unthrottle; in omap8250_probe()
1157 up.port.rs485_config = omap_8250_rs485_config; in omap8250_probe()
1165 &up.port.uartclk); in omap8250_probe()
1178 up.port.line = ret; in omap8250_probe()
1180 if (!up.port.uartclk) { in omap8250_probe()
1181 up.port.uartclk = DEFAULT_CLK_SPEED; in omap8250_probe()
1204 omap_serial_fill_features_erratas(&up, priv); in omap8250_probe()
1205 up.port.handle_irq = omap8250_no_handle_irq; in omap8250_probe()
1218 up.dma = &priv->omap8250_dma; in omap8250_probe()
1233 ret = serial8250_register_8250_port(&up); in omap8250_probe()
1305 static int omap8250_lost_context(struct uart_8250_port *up) in omap8250_lost_context() argument
1309 val = serial_in(up, UART_OMAP_SCR); in omap8250_lost_context()
1324 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_soft_reset() local
1329 sysc = serial_in(up, UART_OMAP_SYSC); in omap8250_soft_reset()
1333 serial_out(up, UART_OMAP_SYSC, sysc); in omap8250_soft_reset()
1338 syss = serial_in(up, UART_OMAP_SYSS); in omap8250_soft_reset()
1352 struct uart_8250_port *up; in omap8250_runtime_suspend() local
1358 up = serial8250_get_port(priv->line); in omap8250_runtime_suspend()
1366 if (uart_console(&up->port)) in omap8250_runtime_suspend()
1378 omap8250_update_mdr1(up, priv); in omap8250_runtime_suspend()
1381 if (up->dma && up->dma->rxchan) in omap8250_runtime_suspend()
1382 omap_8250_rx_dma_flush(up); in omap8250_runtime_suspend()
1393 struct uart_8250_port *up; in omap8250_runtime_resume() local
1399 up = serial8250_get_port(priv->line); in omap8250_runtime_resume()
1401 if (omap8250_lost_context(up)) in omap8250_runtime_resume()
1402 omap8250_restore_regs(up); in omap8250_runtime_resume()
1404 if (up->dma && up->dma->rxchan) in omap8250_runtime_resume()
1405 omap_8250_rx_dma(up); in omap8250_runtime_resume()