Lines Matching full:up
155 static u32 uart_read(struct uart_8250_port *up, u32 reg) in uart_read() argument
157 return readl(up->port.membase + (reg << up->port.regshift)); in uart_read()
162 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_set_mctrl() local
163 struct omap8250_priv *priv = up->port.private_data; in omap8250_set_mctrl()
168 if (!mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS)) { in omap8250_set_mctrl()
173 lcr = serial_in(up, UART_LCR); in omap8250_set_mctrl()
174 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_set_mctrl()
179 serial_out(up, UART_EFR, priv->efr); in omap8250_set_mctrl()
180 serial_out(up, UART_LCR, lcr); in omap8250_set_mctrl()
193 static void omap_8250_mdr1_errataset(struct uart_8250_port *up, in omap_8250_mdr1_errataset() argument
198 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap_8250_mdr1_errataset()
200 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in omap_8250_mdr1_errataset()
206 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in omap_8250_mdr1_errataset()
211 dev_crit(up->port.dev, "Errata i202: timedout %x\n", in omap_8250_mdr1_errataset()
212 serial_in(up, UART_LSR)); in omap_8250_mdr1_errataset()
262 static void omap8250_update_scr(struct uart_8250_port *up, in omap8250_update_scr() argument
267 old_scr = serial_in(up, UART_OMAP_SCR); in omap8250_update_scr()
277 serial_out(up, UART_OMAP_SCR, in omap8250_update_scr()
279 serial_out(up, UART_OMAP_SCR, priv->scr); in omap8250_update_scr()
282 static void omap8250_update_mdr1(struct uart_8250_port *up, in omap8250_update_mdr1() argument
286 omap_8250_mdr1_errataset(up, priv); in omap8250_update_mdr1()
288 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap8250_update_mdr1()
291 static void omap8250_restore_regs(struct uart_8250_port *up) in omap8250_restore_regs() argument
293 struct omap8250_priv *priv = up->port.private_data; in omap8250_restore_regs()
294 struct uart_8250_dma *dma = up->dma; in omap8250_restore_regs()
307 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
308 serial_out(up, UART_EFR, UART_EFR_ECB); in omap8250_restore_regs()
310 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in omap8250_restore_regs()
311 serial8250_out_MCR(up, UART_MCR_TCRTLR); in omap8250_restore_regs()
312 serial_out(up, UART_FCR, up->fcr); in omap8250_restore_regs()
314 omap8250_update_scr(up, priv); in omap8250_restore_regs()
316 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
318 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_RESTORE(16) | in omap8250_restore_regs()
320 serial_out(up, UART_TI752_TLR, in omap8250_restore_regs()
324 serial_out(up, UART_LCR, 0); in omap8250_restore_regs()
327 serial8250_out_MCR(up, up->mcr); in omap8250_restore_regs()
328 serial_out(up, UART_IER, up->ier); in omap8250_restore_regs()
330 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
331 serial_dl_write(up, priv->quot); in omap8250_restore_regs()
333 serial_out(up, UART_EFR, priv->efr); in omap8250_restore_regs()
336 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
337 serial_out(up, UART_XON1, priv->xon); in omap8250_restore_regs()
338 serial_out(up, UART_XOFF1, priv->xoff); in omap8250_restore_regs()
340 serial_out(up, UART_LCR, up->lcr); in omap8250_restore_regs()
342 omap8250_update_mdr1(up, priv); in omap8250_restore_regs()
344 up->port.ops->set_mctrl(&up->port, up->port.mctrl); in omap8250_restore_regs()
355 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_set_termios() local
356 struct omap8250_priv *priv = up->port.private_data; in omap_8250_set_termios()
405 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in omap_8250_set_termios()
407 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in omap_8250_set_termios()
409 up->port.read_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
414 up->port.ignore_status_mask = 0; in omap_8250_set_termios()
416 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in omap_8250_set_termios()
418 up->port.ignore_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
424 up->port.ignore_status_mask |= UART_LSR_OE; in omap_8250_set_termios()
431 up->port.ignore_status_mask |= UART_LSR_DR; in omap_8250_set_termios()
436 up->ier &= ~UART_IER_MSI; in omap_8250_set_termios()
437 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in omap_8250_set_termios()
438 up->ier |= UART_IER_MSI; in omap_8250_set_termios()
440 up->lcr = cval; in omap_8250_set_termios()
441 /* Up to here it was mostly serial8250_do_set_termios() */ in omap_8250_set_termios()
460 up->fcr = UART_FCR_ENABLE_FIFO; in omap_8250_set_termios()
461 up->fcr |= TRIGGER_FCR_MASK(priv->tx_trigger) << OMAP_UART_FCR_TX_TRIG; in omap_8250_set_termios()
462 up->fcr |= TRIGGER_FCR_MASK(priv->rx_trigger) << OMAP_UART_FCR_RX_TRIG; in omap_8250_set_termios()
467 if (up->dma) in omap_8250_set_termios()
475 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in omap_8250_set_termios()
477 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW && in omap_8250_set_termios()
478 !mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS) && in omap_8250_set_termios()
479 !mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_CTS)) { in omap_8250_set_termios()
481 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in omap_8250_set_termios()
483 } else if (up->port.flags & UPF_SOFT_FLOW) { in omap_8250_set_termios()
495 up->port.status |= UPSTAT_AUTOXOFF; in omap_8250_set_termios()
499 omap8250_restore_regs(up); in omap_8250_set_termios()
501 spin_unlock_irq(&up->port.lock); in omap_8250_set_termios()
520 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_pm() local
524 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
525 efr = serial_in(up, UART_EFR); in omap_8250_pm()
526 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in omap_8250_pm()
527 serial_out(up, UART_LCR, 0); in omap_8250_pm()
529 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in omap_8250_pm()
530 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
531 serial_out(up, UART_EFR, efr); in omap_8250_pm()
532 serial_out(up, UART_LCR, 0); in omap_8250_pm()
538 static void omap_serial_fill_features_erratas(struct uart_8250_port *up, in omap_serial_fill_features_erratas() argument
549 mvr = uart_read(up, UART_OMAP_MVER); in omap_serial_fill_features_erratas()
569 dev_warn(up->port.dev, in omap_serial_fill_features_erratas()
619 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_irq() local
624 if (up->dma) { in omap8250_irq()
630 serial8250_rpm_get(up); in omap8250_irq()
647 if ((lsr & UART_LSR_OE) && up->overrun_backoff_time_ms > 0) { in omap8250_irq()
650 up->ier = port->serial_in(port, UART_IER); in omap8250_irq()
651 if (up->ier & (UART_IER_RLSI | UART_IER_RDI)) { in omap8250_irq()
657 cancel_delayed_work(&up->overrun_backoff); in omap8250_irq()
660 delay = msecs_to_jiffies(up->overrun_backoff_time_ms); in omap8250_irq()
661 schedule_delayed_work(&up->overrun_backoff, delay); in omap8250_irq()
664 serial8250_rpm_put(up); in omap8250_irq()
671 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_startup() local
683 up->mcr = 0; in omap_8250_startup()
684 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_startup()
686 serial_out(up, UART_LCR, UART_LCR_WLEN8); in omap_8250_startup()
688 up->lsr_saved_flags = 0; in omap_8250_startup()
689 up->msr_saved_flags = 0; in omap_8250_startup()
693 up->dma = NULL; in omap_8250_startup()
695 if (up->dma) { in omap_8250_startup()
696 ret = serial8250_request_dma(up); in omap_8250_startup()
700 up->dma = NULL; in omap_8250_startup()
709 up->ier = UART_IER_RLSI | UART_IER_RDI; in omap_8250_startup()
710 serial_out(up, UART_IER, up->ier); in omap_8250_startup()
713 up->capabilities |= UART_CAP_RPM; in omap_8250_startup()
716 /* Enable module level wake up */ in omap_8250_startup()
720 serial_out(up, UART_OMAP_WER, priv->wer); in omap_8250_startup()
722 if (up->dma && !(priv->habit & UART_HAS_EFR2)) in omap_8250_startup()
723 up->dma->rx_dma(up); in omap_8250_startup()
737 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_shutdown() local
741 if (up->dma) in omap_8250_shutdown()
742 omap_8250_rx_dma_flush(up); in omap_8250_shutdown()
746 serial_out(up, UART_OMAP_WER, 0); in omap_8250_shutdown()
748 serial_out(up, UART_OMAP_EFR2, 0x0); in omap_8250_shutdown()
750 up->ier = 0; in omap_8250_shutdown()
751 serial_out(up, UART_IER, 0); in omap_8250_shutdown()
753 if (up->dma) in omap_8250_shutdown()
754 serial8250_release_dma(up); in omap_8250_shutdown()
759 if (up->lcr & UART_LCR_SBC) in omap_8250_shutdown()
760 serial_out(up, UART_LCR, up->lcr & ~UART_LCR_SBC); in omap_8250_shutdown()
761 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_shutdown()
788 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_unthrottle() local
795 if (up->dma) in omap_8250_unthrottle()
796 up->dma->rx_dma(up); in omap_8250_unthrottle()
797 up->ier |= UART_IER_RLSI | UART_IER_RDI; in omap_8250_unthrottle()
799 serial_out(up, UART_IER, up->ier); in omap_8250_unthrottle()
1120 static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) in handle_rx_dma() argument
1126 omap_8250_rx_dma_flush(up); in handle_rx_dma()
1129 return omap_8250_rx_dma(up); in handle_rx_dma()
1132 static unsigned char omap_8250_handle_rx_dma(struct uart_8250_port *up, in omap_8250_handle_rx_dma() argument
1137 if (handle_rx_dma(up, iir)) { in omap_8250_handle_rx_dma()
1138 status = serial8250_rx_chars(up, status); in omap_8250_handle_rx_dma()
1139 omap_8250_rx_dma(up); in omap_8250_handle_rx_dma()
1146 static void am654_8250_handle_rx_dma(struct uart_8250_port *up, u8 iir, in am654_8250_handle_rx_dma() argument
1153 (up->ier & UART_IER_RDI)) { in am654_8250_handle_rx_dma()
1154 omap_8250_rx_dma(up); in am654_8250_handle_rx_dma()
1155 serial_out(up, UART_OMAP_EFR2, UART_OMAP_EFR2_TIMEOUT_BEHAVE); in am654_8250_handle_rx_dma()
1162 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in am654_8250_handle_rx_dma()
1163 serial_out(up, UART_IER, up->ier); in am654_8250_handle_rx_dma()
1164 omap_8250_rx_dma_flush(up); in am654_8250_handle_rx_dma()
1165 serial_in(up, UART_IIR); in am654_8250_handle_rx_dma()
1166 serial_out(up, UART_OMAP_EFR2, 0x0); in am654_8250_handle_rx_dma()
1167 up->ier |= UART_IER_RLSI | UART_IER_RDI; in am654_8250_handle_rx_dma()
1168 serial_out(up, UART_IER, up->ier); in am654_8250_handle_rx_dma()
1179 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_dma_handle_irq() local
1180 struct omap8250_priv *priv = up->port.private_data; in omap_8250_dma_handle_irq()
1184 serial8250_rpm_get(up); in omap_8250_dma_handle_irq()
1188 serial8250_rpm_put(up); in omap_8250_dma_handle_irq()
1197 am654_8250_handle_rx_dma(up, iir, status); in omap_8250_dma_handle_irq()
1199 status = omap_8250_handle_rx_dma(up, iir, status); in omap_8250_dma_handle_irq()
1201 serial8250_modem_status(up); in omap_8250_dma_handle_irq()
1202 if (status & UART_LSR_THRE && up->dma->tx_err) { in omap_8250_dma_handle_irq()
1203 if (uart_tx_stopped(&up->port) || in omap_8250_dma_handle_irq()
1204 uart_circ_empty(&up->port.state->xmit)) { in omap_8250_dma_handle_irq()
1205 up->dma->tx_err = 0; in omap_8250_dma_handle_irq()
1206 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1212 if (omap_8250_tx_dma(up)) in omap_8250_dma_handle_irq()
1213 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1219 serial8250_rpm_put(up); in omap_8250_dma_handle_irq()
1288 struct uart_8250_port up; in omap8250_probe() local
1312 memset(&up, 0, sizeof(up)); in omap8250_probe()
1313 up.port.dev = &pdev->dev; in omap8250_probe()
1314 up.port.mapbase = regs->start; in omap8250_probe()
1315 up.port.membase = membase; in omap8250_probe()
1316 up.port.irq = irq; in omap8250_probe()
1325 up.port.type = PORT_8250; in omap8250_probe()
1326 up.port.iotype = UPIO_MEM; in omap8250_probe()
1327 up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SOFT_FLOW | in omap8250_probe()
1329 up.port.private_data = priv; in omap8250_probe()
1331 up.port.regshift = 2; in omap8250_probe()
1332 up.port.fifosize = 64; in omap8250_probe()
1333 up.tx_loadsz = 64; in omap8250_probe()
1334 up.capabilities = UART_CAP_FIFO; in omap8250_probe()
1342 up.capabilities |= UART_CAP_RPM; in omap8250_probe()
1344 up.port.set_termios = omap_8250_set_termios; in omap8250_probe()
1345 up.port.set_mctrl = omap8250_set_mctrl; in omap8250_probe()
1346 up.port.pm = omap_8250_pm; in omap8250_probe()
1347 up.port.startup = omap_8250_startup; in omap8250_probe()
1348 up.port.shutdown = omap_8250_shutdown; in omap8250_probe()
1349 up.port.throttle = omap_8250_throttle; in omap8250_probe()
1350 up.port.unthrottle = omap_8250_unthrottle; in omap8250_probe()
1351 up.port.rs485_config = serial8250_em485_config; in omap8250_probe()
1352 up.rs485_start_tx = serial8250_em485_start_tx; in omap8250_probe()
1353 up.rs485_stop_tx = serial8250_em485_stop_tx; in omap8250_probe()
1354 up.port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); in omap8250_probe()
1361 up.port.line = ret; in omap8250_probe()
1363 if (of_property_read_u32(np, "clock-frequency", &up.port.uartclk)) { in omap8250_probe()
1371 up.port.uartclk = clk_get_rate(clk); in omap8250_probe()
1376 &up.overrun_backoff_time_ms) != 0) in omap8250_probe()
1377 up.overrun_backoff_time_ms = 0; in omap8250_probe()
1385 if (!up.port.uartclk) { in omap8250_probe()
1386 up.port.uartclk = DEFAULT_CLK_SPEED; in omap8250_probe()
1406 * prevent an unsafe default policy with lossy characters on wake-up. in omap8250_probe()
1417 omap_serial_fill_features_erratas(&up, priv); in omap8250_probe()
1418 up.port.handle_irq = omap8250_no_handle_irq; in omap8250_probe()
1434 up.dma = &priv->omap8250_dma; in omap8250_probe()
1435 up.dma->fn = the_no_dma_filter_fn; in omap8250_probe()
1436 up.dma->tx_dma = omap_8250_tx_dma; in omap8250_probe()
1437 up.dma->rx_dma = omap_8250_rx_dma; in omap8250_probe()
1442 up.dma->rx_size = dma_params->rx_size; in omap8250_probe()
1443 up.dma->rxconf.src_maxburst = dma_params->rx_trigger; in omap8250_probe()
1444 up.dma->txconf.dst_maxburst = dma_params->tx_trigger; in omap8250_probe()
1448 up.dma->rx_size = RX_TRIGGER; in omap8250_probe()
1449 up.dma->rxconf.src_maxburst = RX_TRIGGER; in omap8250_probe()
1450 up.dma->txconf.dst_maxburst = TX_TRIGGER; in omap8250_probe()
1454 ret = serial8250_register_8250_port(&up); in omap8250_probe()
1507 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_suspend() local
1514 serial_out(up, UART_OMAP_WER, priv->wer); in omap8250_suspend()
1535 static int omap8250_lost_context(struct uart_8250_port *up) in omap8250_lost_context() argument
1539 val = serial_in(up, UART_OMAP_SCR); in omap8250_lost_context()
1554 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_soft_reset() local
1568 serial_out(up, UART_OMAP_SCR, OMAP_UART_SCR_DMAMODE_1); in omap8250_soft_reset()
1569 serial_out(up, UART_OMAP_SCR, in omap8250_soft_reset()
1572 sysc = serial_in(up, UART_OMAP_SYSC); in omap8250_soft_reset()
1576 serial_out(up, UART_OMAP_SYSC, sysc); in omap8250_soft_reset()
1581 syss = serial_in(up, UART_OMAP_SYSS); in omap8250_soft_reset()
1595 struct uart_8250_port *up; in omap8250_runtime_suspend() local
1601 up = serial8250_get_port(priv->line); in omap8250_runtime_suspend()
1609 if (uart_console(&up->port)) in omap8250_runtime_suspend()
1621 omap8250_update_mdr1(up, priv); in omap8250_runtime_suspend()
1623 serial_out(up, UART_OMAP_WER, priv->wer); in omap8250_runtime_suspend()
1626 if (up->dma && up->dma->rxchan) in omap8250_runtime_suspend()
1627 omap_8250_rx_dma_flush(up); in omap8250_runtime_suspend()
1638 struct uart_8250_port *up; in omap8250_runtime_resume() local
1644 up = serial8250_get_port(priv->line); in omap8250_runtime_resume()
1646 if (omap8250_lost_context(up)) in omap8250_runtime_resume()
1647 omap8250_restore_regs(up); in omap8250_runtime_resume()
1649 if (up->dma && up->dma->rxchan && !(priv->habit & UART_HAS_EFR2)) in omap8250_runtime_resume()
1650 omap_8250_rx_dma(up); in omap8250_runtime_resume()