Lines Matching full:up
145 static u32 uart_read(struct uart_8250_port *up, u32 reg) in uart_read() argument
147 return readl(up->port.membase + (reg << up->port.regshift)); in uart_read()
152 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_set_mctrl() local
153 struct omap8250_priv *priv = up->port.private_data; in omap8250_set_mctrl()
158 if (!mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS)) { in omap8250_set_mctrl()
163 lcr = serial_in(up, UART_LCR); in omap8250_set_mctrl()
164 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_set_mctrl()
169 serial_out(up, UART_EFR, priv->efr); in omap8250_set_mctrl()
170 serial_out(up, UART_LCR, lcr); in omap8250_set_mctrl()
183 static void omap_8250_mdr1_errataset(struct uart_8250_port *up, in omap_8250_mdr1_errataset() argument
189 old_mdr1 = serial_in(up, UART_OMAP_MDR1); in omap_8250_mdr1_errataset()
193 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap_8250_mdr1_errataset()
195 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in omap_8250_mdr1_errataset()
201 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in omap_8250_mdr1_errataset()
206 dev_crit(up->port.dev, "Errata i202: timedout %x\n", in omap_8250_mdr1_errataset()
207 serial_in(up, UART_LSR)); in omap_8250_mdr1_errataset()
257 static void omap8250_update_scr(struct uart_8250_port *up, in omap8250_update_scr() argument
262 old_scr = serial_in(up, UART_OMAP_SCR); in omap8250_update_scr()
272 serial_out(up, UART_OMAP_SCR, in omap8250_update_scr()
274 serial_out(up, UART_OMAP_SCR, priv->scr); in omap8250_update_scr()
277 static void omap8250_update_mdr1(struct uart_8250_port *up, in omap8250_update_mdr1() argument
281 omap_8250_mdr1_errataset(up, priv); in omap8250_update_mdr1()
283 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap8250_update_mdr1()
286 static void omap8250_restore_regs(struct uart_8250_port *up) in omap8250_restore_regs() argument
288 struct omap8250_priv *priv = up->port.private_data; in omap8250_restore_regs()
289 struct uart_8250_dma *dma = up->dma; in omap8250_restore_regs()
302 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
303 serial_out(up, UART_EFR, UART_EFR_ECB); in omap8250_restore_regs()
305 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in omap8250_restore_regs()
306 serial8250_out_MCR(up, UART_MCR_TCRTLR); in omap8250_restore_regs()
307 serial_out(up, UART_FCR, up->fcr); in omap8250_restore_regs()
309 omap8250_update_scr(up, priv); in omap8250_restore_regs()
311 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
313 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_RESTORE(16) | in omap8250_restore_regs()
315 serial_out(up, UART_TI752_TLR, in omap8250_restore_regs()
319 serial_out(up, UART_LCR, 0); in omap8250_restore_regs()
322 serial8250_out_MCR(up, up->mcr); in omap8250_restore_regs()
323 serial_out(up, UART_IER, up->ier); in omap8250_restore_regs()
325 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
326 serial_dl_write(up, priv->quot); in omap8250_restore_regs()
328 serial_out(up, UART_EFR, priv->efr); in omap8250_restore_regs()
331 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
332 serial_out(up, UART_XON1, priv->xon); in omap8250_restore_regs()
333 serial_out(up, UART_XOFF1, priv->xoff); in omap8250_restore_regs()
335 serial_out(up, UART_LCR, up->lcr); in omap8250_restore_regs()
337 omap8250_update_mdr1(up, priv); in omap8250_restore_regs()
339 up->port.ops->set_mctrl(&up->port, up->port.mctrl); in omap8250_restore_regs()
350 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_set_termios() local
351 struct omap8250_priv *priv = up->port.private_data; in omap_8250_set_termios()
400 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in omap_8250_set_termios()
402 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in omap_8250_set_termios()
404 up->port.read_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
409 up->port.ignore_status_mask = 0; in omap_8250_set_termios()
411 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in omap_8250_set_termios()
413 up->port.ignore_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
419 up->port.ignore_status_mask |= UART_LSR_OE; in omap_8250_set_termios()
426 up->port.ignore_status_mask |= UART_LSR_DR; in omap_8250_set_termios()
431 up->ier &= ~UART_IER_MSI; in omap_8250_set_termios()
432 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in omap_8250_set_termios()
433 up->ier |= UART_IER_MSI; in omap_8250_set_termios()
435 up->lcr = cval; in omap_8250_set_termios()
436 /* Up to here it was mostly serial8250_do_set_termios() */ in omap_8250_set_termios()
455 up->fcr = UART_FCR_ENABLE_FIFO; in omap_8250_set_termios()
456 up->fcr |= TRIGGER_FCR_MASK(priv->tx_trigger) << OMAP_UART_FCR_TX_TRIG; in omap_8250_set_termios()
457 up->fcr |= TRIGGER_FCR_MASK(priv->rx_trigger) << OMAP_UART_FCR_RX_TRIG; in omap_8250_set_termios()
462 if (up->dma) in omap_8250_set_termios()
470 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in omap_8250_set_termios()
472 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW && in omap_8250_set_termios()
473 !mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS) && in omap_8250_set_termios()
474 !mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_CTS)) { in omap_8250_set_termios()
476 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in omap_8250_set_termios()
478 } else if (up->port.flags & UPF_SOFT_FLOW) { in omap_8250_set_termios()
490 up->port.status |= UPSTAT_AUTOXOFF; in omap_8250_set_termios()
494 omap8250_restore_regs(up); in omap_8250_set_termios()
496 spin_unlock_irq(&up->port.lock); in omap_8250_set_termios()
515 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_pm() local
519 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
520 efr = serial_in(up, UART_EFR); in omap_8250_pm()
521 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in omap_8250_pm()
522 serial_out(up, UART_LCR, 0); in omap_8250_pm()
524 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in omap_8250_pm()
525 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
526 serial_out(up, UART_EFR, efr); in omap_8250_pm()
527 serial_out(up, UART_LCR, 0); in omap_8250_pm()
533 static void omap_serial_fill_features_erratas(struct uart_8250_port *up, in omap_serial_fill_features_erratas() argument
539 mvr = uart_read(up, UART_OMAP_MVER); in omap_serial_fill_features_erratas()
559 dev_warn(up->port.dev, in omap_serial_fill_features_erratas()
600 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_irq() local
605 if (up->dma) { in omap8250_irq()
611 serial8250_rpm_get(up); in omap8250_irq()
614 serial8250_rpm_put(up); in omap8250_irq()
621 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_startup() local
633 up->mcr = 0; in omap_8250_startup()
634 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_startup()
636 serial_out(up, UART_LCR, UART_LCR_WLEN8); in omap_8250_startup()
638 up->lsr_saved_flags = 0; in omap_8250_startup()
639 up->msr_saved_flags = 0; in omap_8250_startup()
643 up->dma = NULL; in omap_8250_startup()
645 if (up->dma) { in omap_8250_startup()
646 ret = serial8250_request_dma(up); in omap_8250_startup()
650 up->dma = NULL; in omap_8250_startup()
659 up->ier = UART_IER_RLSI | UART_IER_RDI; in omap_8250_startup()
660 serial_out(up, UART_IER, up->ier); in omap_8250_startup()
663 up->capabilities |= UART_CAP_RPM; in omap_8250_startup()
666 /* Enable module level wake up */ in omap_8250_startup()
670 serial_out(up, UART_OMAP_WER, priv->wer); in omap_8250_startup()
672 if (up->dma && !(priv->habit & UART_HAS_EFR2)) in omap_8250_startup()
673 up->dma->rx_dma(up); in omap_8250_startup()
687 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_shutdown() local
691 if (up->dma) in omap_8250_shutdown()
692 omap_8250_rx_dma_flush(up); in omap_8250_shutdown()
696 serial_out(up, UART_OMAP_WER, 0); in omap_8250_shutdown()
698 serial_out(up, UART_OMAP_EFR2, 0x0); in omap_8250_shutdown()
700 up->ier = 0; in omap_8250_shutdown()
701 serial_out(up, UART_IER, 0); in omap_8250_shutdown()
703 if (up->dma) in omap_8250_shutdown()
704 serial8250_release_dma(up); in omap_8250_shutdown()
709 if (up->lcr & UART_LCR_SBC) in omap_8250_shutdown()
710 serial_out(up, UART_LCR, up->lcr & ~UART_LCR_SBC); in omap_8250_shutdown()
711 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_shutdown()
738 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_unthrottle() local
745 if (up->dma) in omap_8250_unthrottle()
746 up->dma->rx_dma(up); in omap_8250_unthrottle()
747 up->ier |= UART_IER_RLSI | UART_IER_RDI; in omap_8250_unthrottle()
749 serial_out(up, UART_IER, up->ier); in omap_8250_unthrottle()
1048 static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) in handle_rx_dma() argument
1054 omap_8250_rx_dma_flush(up); in handle_rx_dma()
1057 return omap_8250_rx_dma(up); in handle_rx_dma()
1060 static unsigned char omap_8250_handle_rx_dma(struct uart_8250_port *up, in omap_8250_handle_rx_dma() argument
1065 if (handle_rx_dma(up, iir)) { in omap_8250_handle_rx_dma()
1066 status = serial8250_rx_chars(up, status); in omap_8250_handle_rx_dma()
1067 omap_8250_rx_dma(up); in omap_8250_handle_rx_dma()
1074 static void am654_8250_handle_rx_dma(struct uart_8250_port *up, u8 iir, in am654_8250_handle_rx_dma() argument
1081 (up->ier & UART_IER_RDI)) { in am654_8250_handle_rx_dma()
1082 omap_8250_rx_dma(up); in am654_8250_handle_rx_dma()
1083 serial_out(up, UART_OMAP_EFR2, UART_OMAP_EFR2_TIMEOUT_BEHAVE); in am654_8250_handle_rx_dma()
1090 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in am654_8250_handle_rx_dma()
1091 serial_out(up, UART_IER, up->ier); in am654_8250_handle_rx_dma()
1092 omap_8250_rx_dma_flush(up); in am654_8250_handle_rx_dma()
1093 serial_in(up, UART_IIR); in am654_8250_handle_rx_dma()
1094 serial_out(up, UART_OMAP_EFR2, 0x0); in am654_8250_handle_rx_dma()
1095 up->ier |= UART_IER_RLSI | UART_IER_RDI; in am654_8250_handle_rx_dma()
1096 serial_out(up, UART_IER, up->ier); in am654_8250_handle_rx_dma()
1107 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_dma_handle_irq() local
1108 struct omap8250_priv *priv = up->port.private_data; in omap_8250_dma_handle_irq()
1113 serial8250_rpm_get(up); in omap_8250_dma_handle_irq()
1117 serial8250_rpm_put(up); in omap_8250_dma_handle_irq()
1126 am654_8250_handle_rx_dma(up, iir, status); in omap_8250_dma_handle_irq()
1128 status = omap_8250_handle_rx_dma(up, iir, status); in omap_8250_dma_handle_irq()
1130 serial8250_modem_status(up); in omap_8250_dma_handle_irq()
1131 if (status & UART_LSR_THRE && up->dma->tx_err) { in omap_8250_dma_handle_irq()
1132 if (uart_tx_stopped(&up->port) || in omap_8250_dma_handle_irq()
1133 uart_circ_empty(&up->port.state->xmit)) { in omap_8250_dma_handle_irq()
1134 up->dma->tx_err = 0; in omap_8250_dma_handle_irq()
1135 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1141 if (omap_8250_tx_dma(up)) in omap_8250_dma_handle_irq()
1142 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1147 serial8250_rpm_put(up); in omap_8250_dma_handle_irq()
1215 struct uart_8250_port up; in omap8250_probe() local
1239 memset(&up, 0, sizeof(up)); in omap8250_probe()
1240 up.port.dev = &pdev->dev; in omap8250_probe()
1241 up.port.mapbase = regs->start; in omap8250_probe()
1242 up.port.membase = membase; in omap8250_probe()
1243 up.port.irq = irq; in omap8250_probe()
1252 up.port.type = PORT_8250; in omap8250_probe()
1253 up.port.iotype = UPIO_MEM; in omap8250_probe()
1254 up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SOFT_FLOW | in omap8250_probe()
1256 up.port.private_data = priv; in omap8250_probe()
1258 up.port.regshift = 2; in omap8250_probe()
1259 up.port.fifosize = 64; in omap8250_probe()
1260 up.tx_loadsz = 64; in omap8250_probe()
1261 up.capabilities = UART_CAP_FIFO; in omap8250_probe()
1269 up.capabilities |= UART_CAP_RPM; in omap8250_probe()
1271 up.port.set_termios = omap_8250_set_termios; in omap8250_probe()
1272 up.port.set_mctrl = omap8250_set_mctrl; in omap8250_probe()
1273 up.port.pm = omap_8250_pm; in omap8250_probe()
1274 up.port.startup = omap_8250_startup; in omap8250_probe()
1275 up.port.shutdown = omap_8250_shutdown; in omap8250_probe()
1276 up.port.throttle = omap_8250_throttle; in omap8250_probe()
1277 up.port.unthrottle = omap_8250_unthrottle; in omap8250_probe()
1278 up.port.rs485_config = serial8250_em485_config; in omap8250_probe()
1279 up.rs485_start_tx = serial8250_em485_start_tx; in omap8250_probe()
1280 up.rs485_stop_tx = serial8250_em485_stop_tx; in omap8250_probe()
1281 up.port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); in omap8250_probe()
1288 up.port.line = ret; in omap8250_probe()
1290 if (of_property_read_u32(np, "clock-frequency", &up.port.uartclk)) { in omap8250_probe()
1298 up.port.uartclk = clk_get_rate(clk); in omap8250_probe()
1308 if (!up.port.uartclk) { in omap8250_probe()
1309 up.port.uartclk = DEFAULT_CLK_SPEED; in omap8250_probe()
1329 * prevent an unsafe default policy with lossy characters on wake-up. in omap8250_probe()
1340 omap_serial_fill_features_erratas(&up, priv); in omap8250_probe()
1341 up.port.handle_irq = omap8250_no_handle_irq; in omap8250_probe()
1357 up.dma = &priv->omap8250_dma; in omap8250_probe()
1358 up.dma->fn = the_no_dma_filter_fn; in omap8250_probe()
1359 up.dma->tx_dma = omap_8250_tx_dma; in omap8250_probe()
1360 up.dma->rx_dma = omap_8250_rx_dma; in omap8250_probe()
1365 up.dma->rx_size = dma_params->rx_size; in omap8250_probe()
1366 up.dma->rxconf.src_maxburst = dma_params->rx_trigger; in omap8250_probe()
1367 up.dma->txconf.dst_maxburst = dma_params->tx_trigger; in omap8250_probe()
1371 up.dma->rx_size = RX_TRIGGER; in omap8250_probe()
1372 up.dma->rxconf.src_maxburst = RX_TRIGGER; in omap8250_probe()
1373 up.dma->txconf.dst_maxburst = TX_TRIGGER; in omap8250_probe()
1377 ret = serial8250_register_8250_port(&up); in omap8250_probe()
1430 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_suspend() local
1437 serial_out(up, UART_OMAP_WER, priv->wer); in omap8250_suspend()
1458 static int omap8250_lost_context(struct uart_8250_port *up) in omap8250_lost_context() argument
1462 val = serial_in(up, UART_OMAP_SCR); in omap8250_lost_context()
1477 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_soft_reset() local
1491 serial_out(up, UART_OMAP_SCR, OMAP_UART_SCR_DMAMODE_1); in omap8250_soft_reset()
1492 serial_out(up, UART_OMAP_SCR, in omap8250_soft_reset()
1495 sysc = serial_in(up, UART_OMAP_SYSC); in omap8250_soft_reset()
1499 serial_out(up, UART_OMAP_SYSC, sysc); in omap8250_soft_reset()
1504 syss = serial_in(up, UART_OMAP_SYSS); in omap8250_soft_reset()
1518 struct uart_8250_port *up; in omap8250_runtime_suspend() local
1524 up = serial8250_get_port(priv->line); in omap8250_runtime_suspend()
1532 if (uart_console(&up->port)) in omap8250_runtime_suspend()
1544 omap8250_update_mdr1(up, priv); in omap8250_runtime_suspend()
1546 serial_out(up, UART_OMAP_WER, priv->wer); in omap8250_runtime_suspend()
1549 if (up->dma && up->dma->rxchan) in omap8250_runtime_suspend()
1550 omap_8250_rx_dma_flush(up); in omap8250_runtime_suspend()
1561 struct uart_8250_port *up; in omap8250_runtime_resume() local
1567 up = serial8250_get_port(priv->line); in omap8250_runtime_resume()
1569 if (omap8250_lost_context(up)) in omap8250_runtime_resume()
1570 omap8250_restore_regs(up); in omap8250_runtime_resume()
1572 if (up->dma && up->dma->rxchan && !(priv->habit & UART_HAS_EFR2)) in omap8250_runtime_resume()
1573 omap_8250_rx_dma(up); in omap8250_runtime_resume()