Lines Matching full:port
39 /* Revisit: We should calculate this based on the actual port settings */
56 static void atmel_start_rx(struct uart_port *port);
57 static void atmel_stop_rx(struct uart_port *port);
70 /* Use device name ttyS, major 4, minor 64-68. This is the usual serial port
101 * at91: 6 USARTs and one DBGU port (SAM9260)
107 * We wrap our port structure around the generic uart_port.
125 spinlock_t lock_tx; /* port lock */
126 spinlock_t lock_rx; /* port lock */
181 int (*prepare_rx)(struct uart_port *port);
182 int (*prepare_tx)(struct uart_port *port);
183 void (*schedule_rx)(struct uart_port *port);
184 void (*schedule_tx)(struct uart_port *port);
185 void (*release_rx)(struct uart_port *port);
186 void (*release_tx)(struct uart_port *port);
205 static inline u32 atmel_uart_readl(struct uart_port *port, u32 reg) in atmel_uart_readl() argument
207 return __raw_readl(port->membase + reg); in atmel_uart_readl()
210 static inline void atmel_uart_writel(struct uart_port *port, u32 reg, u32 value) in atmel_uart_writel() argument
212 __raw_writel(value, port->membase + reg); in atmel_uart_writel()
215 static inline u8 atmel_uart_read_char(struct uart_port *port) in atmel_uart_read_char() argument
217 return __raw_readb(port->membase + ATMEL_US_RHR); in atmel_uart_read_char()
220 static inline void atmel_uart_write_char(struct uart_port *port, u8 value) in atmel_uart_write_char() argument
222 __raw_writeb(value, port->membase + ATMEL_US_THR); in atmel_uart_write_char()
225 static inline int atmel_uart_is_half_duplex(struct uart_port *port) in atmel_uart_is_half_duplex() argument
227 return ((port->rs485.flags & SER_RS485_ENABLED) && in atmel_uart_is_half_duplex()
228 !(port->rs485.flags & SER_RS485_RX_DURING_TX)) || in atmel_uart_is_half_duplex()
229 (port->iso7816.flags & SER_ISO7816_ENABLED); in atmel_uart_is_half_duplex()
233 static bool atmel_use_pdc_rx(struct uart_port *port) in atmel_use_pdc_rx() argument
235 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_use_pdc_rx()
240 static bool atmel_use_pdc_tx(struct uart_port *port) in atmel_use_pdc_tx() argument
242 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_use_pdc_tx()
247 static bool atmel_use_pdc_rx(struct uart_port *port) in atmel_use_pdc_rx() argument
252 static bool atmel_use_pdc_tx(struct uart_port *port) in atmel_use_pdc_tx() argument
258 static bool atmel_use_dma_tx(struct uart_port *port) in atmel_use_dma_tx() argument
260 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_use_dma_tx()
265 static bool atmel_use_dma_rx(struct uart_port *port) in atmel_use_dma_rx() argument
267 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_use_dma_rx()
272 static bool atmel_use_fifo(struct uart_port *port) in atmel_use_fifo() argument
274 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_use_fifo()
287 static int atmel_config_rs485(struct uart_port *port, in atmel_config_rs485() argument
290 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_config_rs485()
294 atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask); in atmel_config_rs485()
296 mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_config_rs485()
299 dev_dbg(port->dev, "Setting UART to RS485\n"); in atmel_config_rs485()
305 atmel_uart_writel(port, ATMEL_US_TTGR, in atmel_config_rs485()
310 dev_dbg(port->dev, "Setting UART to RS232\n"); in atmel_config_rs485()
311 if (atmel_use_pdc_tx(port)) in atmel_config_rs485()
317 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_config_rs485()
320 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask); in atmel_config_rs485()
325 static unsigned int atmel_calc_cd(struct uart_port *port, in atmel_calc_cd() argument
328 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_calc_cd()
338 static unsigned int atmel_calc_fidi(struct uart_port *port, in atmel_calc_fidi() argument
352 static int atmel_config_iso7816(struct uart_port *port, in atmel_config_iso7816() argument
355 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_config_iso7816()
361 atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask); in atmel_config_iso7816()
363 mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_config_iso7816()
369 dev_err(port->dev, "ISO7816: Timeguard exceeding 255\n"); in atmel_config_iso7816()
382 dev_err(port->dev, "ISO7816: Type not supported\n"); in atmel_config_iso7816()
395 cd = atmel_calc_cd(port, iso7816conf); in atmel_config_iso7816()
396 fidi = atmel_calc_fidi(port, iso7816conf); in atmel_config_iso7816()
398 dev_warn(port->dev, "ISO7816 fidi = 0, Generator generates no signal\n"); in atmel_config_iso7816()
401 dev_err(port->dev, "ISO7816 fidi = %u, value not supported\n", fidi); in atmel_config_iso7816()
407 if (!(port->iso7816.flags & SER_ISO7816_ENABLED)) { in atmel_config_iso7816()
408 /* port not yet in iso7816 mode: store configuration */ in atmel_config_iso7816()
409 atmel_port->backup_mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_config_iso7816()
410 atmel_port->backup_brgr = atmel_uart_readl(port, ATMEL_US_BRGR); in atmel_config_iso7816()
413 atmel_uart_writel(port, ATMEL_US_TTGR, iso7816conf->tg); in atmel_config_iso7816()
414 atmel_uart_writel(port, ATMEL_US_BRGR, cd); in atmel_config_iso7816()
415 atmel_uart_writel(port, ATMEL_US_FIDI, fidi); in atmel_config_iso7816()
417 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXEN); in atmel_config_iso7816()
420 dev_dbg(port->dev, "Setting UART back to RS232\n"); in atmel_config_iso7816()
424 atmel_uart_writel(port, ATMEL_US_TTGR, 0); in atmel_config_iso7816()
425 atmel_uart_writel(port, ATMEL_US_BRGR, atmel_port->backup_brgr); in atmel_config_iso7816()
426 atmel_uart_writel(port, ATMEL_US_FIDI, 0x174); in atmel_config_iso7816()
428 if (atmel_use_pdc_tx(port)) in atmel_config_iso7816()
435 port->iso7816 = *iso7816conf; in atmel_config_iso7816()
437 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_config_iso7816()
441 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask); in atmel_config_iso7816()
449 static u_int atmel_tx_empty(struct uart_port *port) in atmel_tx_empty() argument
451 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_empty()
455 return (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXEMPTY) ? in atmel_tx_empty()
463 static void atmel_set_mctrl(struct uart_port *port, u_int mctrl) in atmel_set_mctrl() argument
466 unsigned int mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_set_mctrl()
468 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_set_mctrl()
471 if (port->rs485.flags & SER_RS485_ENABLED) { in atmel_set_mctrl()
472 atmel_uart_writel(port, ATMEL_US_TTGR, in atmel_set_mctrl()
473 port->rs485.delay_rts_after_send); in atmel_set_mctrl()
503 atmel_uart_writel(port, ATMEL_US_CR, control); in atmel_set_mctrl()
514 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_set_mctrl()
520 static u_int atmel_get_mctrl(struct uart_port *port) in atmel_get_mctrl() argument
522 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_get_mctrl()
525 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_get_mctrl()
545 static void atmel_stop_tx(struct uart_port *port) in atmel_stop_tx() argument
547 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_stop_tx()
549 if (atmel_use_pdc_tx(port)) { in atmel_stop_tx()
551 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS); in atmel_stop_tx()
559 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS); in atmel_stop_tx()
563 atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask); in atmel_stop_tx()
565 if (atmel_uart_is_half_duplex(port)) in atmel_stop_tx()
567 atmel_start_rx(port); in atmel_stop_tx()
574 static void atmel_start_tx(struct uart_port *port) in atmel_start_tx() argument
576 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_start_tx()
578 if (atmel_use_pdc_tx(port) && (atmel_uart_readl(port, ATMEL_PDC_PTSR) in atmel_start_tx()
584 if (atmel_use_pdc_tx(port) || atmel_use_dma_tx(port)) in atmel_start_tx()
585 if (atmel_uart_is_half_duplex(port)) in atmel_start_tx()
586 atmel_stop_rx(port); in atmel_start_tx()
588 if (atmel_use_pdc_tx(port)) in atmel_start_tx()
590 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); in atmel_start_tx()
593 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask); in atmel_start_tx()
596 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN); in atmel_start_tx()
601 * start receiving - port is in process of being opened.
603 static void atmel_start_rx(struct uart_port *port) in atmel_start_rx() argument
606 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_start_rx()
608 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXEN); in atmel_start_rx()
610 if (atmel_use_pdc_rx(port)) { in atmel_start_rx()
612 atmel_uart_writel(port, ATMEL_US_IER, in atmel_start_rx()
614 port->read_status_mask); in atmel_start_rx()
615 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); in atmel_start_rx()
617 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY); in atmel_start_rx()
622 * Stop receiving - port is in process of being closed.
624 static void atmel_stop_rx(struct uart_port *port) in atmel_stop_rx() argument
626 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXDIS); in atmel_stop_rx()
628 if (atmel_use_pdc_rx(port)) { in atmel_stop_rx()
630 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS); in atmel_stop_rx()
631 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_stop_rx()
633 port->read_status_mask); in atmel_stop_rx()
635 atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXRDY); in atmel_stop_rx()
642 static void atmel_enable_ms(struct uart_port *port) in atmel_enable_ms() argument
644 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_enable_ms()
667 atmel_uart_writel(port, ATMEL_US_IER, ier); in atmel_enable_ms()
675 static void atmel_disable_ms(struct uart_port *port) in atmel_disable_ms() argument
677 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_disable_ms()
702 atmel_uart_writel(port, ATMEL_US_IDR, idr); in atmel_disable_ms()
708 static void atmel_break_ctl(struct uart_port *port, int break_state) in atmel_break_ctl() argument
712 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTBRK); in atmel_break_ctl()
715 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STPBRK); in atmel_break_ctl()
722 atmel_buffer_rx_char(struct uart_port *port, unsigned int status, in atmel_buffer_rx_char() argument
725 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_buffer_rx_char()
746 static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status) in atmel_pdc_rxerr() argument
749 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_pdc_rxerr()
754 port->icount.brk++; in atmel_pdc_rxerr()
757 port->icount.parity++; in atmel_pdc_rxerr()
759 port->icount.frame++; in atmel_pdc_rxerr()
761 port->icount.overrun++; in atmel_pdc_rxerr()
767 static void atmel_rx_chars(struct uart_port *port) in atmel_rx_chars() argument
769 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_chars()
772 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_rx_chars()
774 ch = atmel_uart_read_char(port); in atmel_rx_chars()
785 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_rx_chars()
790 atmel_uart_writel(port, ATMEL_US_IER, in atmel_rx_chars()
800 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_rx_chars()
807 atmel_buffer_rx_char(port, status, ch); in atmel_rx_chars()
808 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_rx_chars()
818 static void atmel_tx_chars(struct uart_port *port) in atmel_tx_chars() argument
820 struct circ_buf *xmit = &port->state->xmit; in atmel_tx_chars()
821 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_chars()
823 if (port->x_char && in atmel_tx_chars()
824 (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY)) { in atmel_tx_chars()
825 atmel_uart_write_char(port, port->x_char); in atmel_tx_chars()
826 port->icount.tx++; in atmel_tx_chars()
827 port->x_char = 0; in atmel_tx_chars()
829 if (uart_circ_empty(xmit) || uart_tx_stopped(port)) in atmel_tx_chars()
832 while (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY) { in atmel_tx_chars()
833 atmel_uart_write_char(port, xmit->buf[xmit->tail]); in atmel_tx_chars()
835 port->icount.tx++; in atmel_tx_chars()
841 uart_write_wakeup(port); in atmel_tx_chars()
851 atmel_uart_writel(port, ATMEL_US_IER, in atmel_tx_chars()
854 if (atmel_uart_is_half_duplex(port)) in atmel_tx_chars()
862 struct uart_port *port = &atmel_port->uart; in atmel_complete_tx_dma() local
863 struct circ_buf *xmit = &port->state->xmit; in atmel_complete_tx_dma()
867 spin_lock_irqsave(&port->lock, flags); in atmel_complete_tx_dma()
874 port->icount.tx += atmel_port->tx_len; in atmel_complete_tx_dma()
883 uart_write_wakeup(port); in atmel_complete_tx_dma()
892 else if (atmel_uart_is_half_duplex(port)) { in atmel_complete_tx_dma()
898 atmel_uart_writel(port, ATMEL_US_IER, in atmel_complete_tx_dma()
902 spin_unlock_irqrestore(&port->lock, flags); in atmel_complete_tx_dma()
905 static void atmel_release_tx_dma(struct uart_port *port) in atmel_release_tx_dma() argument
907 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_tx_dma()
913 dma_unmap_sg(port->dev, &atmel_port->sg_tx, 1, in atmel_release_tx_dma()
925 static void atmel_tx_dma(struct uart_port *port) in atmel_tx_dma() argument
927 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_dma()
928 struct circ_buf *xmit = &port->state->xmit; in atmel_tx_dma()
939 if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) { in atmel_tx_dma()
942 * Port xmit buffer is already mapped, in atmel_tx_dma()
946 * Take the port lock to get a in atmel_tx_dma()
993 dev_err(port->dev, "Failed to send via dma!\n"); in atmel_tx_dma()
997 dma_sync_sg_for_device(port->dev, sg_tx, 1, DMA_TO_DEVICE); in atmel_tx_dma()
1004 dev_err(port->dev, "dma_submit_error %d\n", in atmel_tx_dma()
1013 uart_write_wakeup(port); in atmel_tx_dma()
1016 static int atmel_prepare_tx_dma(struct uart_port *port) in atmel_prepare_tx_dma() argument
1018 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_tx_dma()
1019 struct device *mfd_dev = port->dev->parent; in atmel_prepare_tx_dma()
1030 dev_info(port->dev, "using %s for tx DMA transfers\n", in atmel_prepare_tx_dma()
1036 BUG_ON(!PAGE_ALIGNED(port->state->xmit.buf)); in atmel_prepare_tx_dma()
1038 virt_to_page(port->state->xmit.buf), in atmel_prepare_tx_dma()
1040 offset_in_page(port->state->xmit.buf)); in atmel_prepare_tx_dma()
1041 nent = dma_map_sg(port->dev, in atmel_prepare_tx_dma()
1047 dev_dbg(port->dev, "need to release resource of dma\n"); in atmel_prepare_tx_dma()
1050 dev_dbg(port->dev, "%s: mapped %d@%p to %pad\n", __func__, in atmel_prepare_tx_dma()
1052 port->state->xmit.buf, in atmel_prepare_tx_dma()
1062 config.dst_addr = port->mapbase + ATMEL_US_THR; in atmel_prepare_tx_dma()
1068 dev_err(port->dev, "DMA tx slave configuration failed\n"); in atmel_prepare_tx_dma()
1075 dev_err(port->dev, "TX channel not available, switch to pio\n"); in atmel_prepare_tx_dma()
1078 atmel_release_tx_dma(port); in atmel_prepare_tx_dma()
1084 struct uart_port *port = arg; in atmel_complete_rx_dma() local
1085 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_complete_rx_dma()
1090 static void atmel_release_rx_dma(struct uart_port *port) in atmel_release_rx_dma() argument
1092 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_rx_dma()
1098 dma_unmap_sg(port->dev, &atmel_port->sg_rx, 1, in atmel_release_rx_dma()
1107 static void atmel_rx_from_dma(struct uart_port *port) in atmel_rx_from_dma() argument
1109 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_from_dma()
1110 struct tty_port *tport = &port->state->port; in atmel_rx_from_dma()
1119 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_rx_from_dma()
1125 dev_dbg(port->dev, "Get residue error, restart tasklet\n"); in atmel_rx_from_dma()
1126 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT); in atmel_rx_from_dma()
1132 dma_sync_sg_for_cpu(port->dev, in atmel_rx_from_dma()
1163 port->icount.rx += count; in atmel_rx_from_dma()
1175 port->icount.rx += count; in atmel_rx_from_dma()
1179 dma_sync_sg_for_device(port->dev, in atmel_rx_from_dma()
1188 spin_unlock(&port->lock); in atmel_rx_from_dma()
1190 spin_lock(&port->lock); in atmel_rx_from_dma()
1192 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT); in atmel_rx_from_dma()
1195 static int atmel_prepare_rx_dma(struct uart_port *port) in atmel_prepare_rx_dma() argument
1197 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_rx_dma()
1198 struct device *mfd_dev = port->dev->parent; in atmel_prepare_rx_dma()
1213 dev_info(port->dev, "using %s for rx DMA transfers\n", in atmel_prepare_rx_dma()
1224 nent = dma_map_sg(port->dev, in atmel_prepare_rx_dma()
1230 dev_dbg(port->dev, "need to release resource of dma\n"); in atmel_prepare_rx_dma()
1233 dev_dbg(port->dev, "%s: mapped %d@%p to %pad\n", __func__, in atmel_prepare_rx_dma()
1243 config.src_addr = port->mapbase + ATMEL_US_RHR; in atmel_prepare_rx_dma()
1249 dev_err(port->dev, "DMA rx slave configuration failed\n"); in atmel_prepare_rx_dma()
1263 dev_err(port->dev, "Preparing DMA cyclic failed\n"); in atmel_prepare_rx_dma()
1267 desc->callback_param = port; in atmel_prepare_rx_dma()
1271 dev_err(port->dev, "dma_submit_error %d\n", in atmel_prepare_rx_dma()
1281 dev_err(port->dev, "RX channel not available, switch to pio\n"); in atmel_prepare_rx_dma()
1284 atmel_release_rx_dma(port); in atmel_prepare_rx_dma()
1292 struct uart_port *port = &atmel_port->uart; in atmel_uart_timer_callback() local
1297 jiffies + uart_poll_timeout(port)); in atmel_uart_timer_callback()
1305 atmel_handle_receive(struct uart_port *port, unsigned int pending) in atmel_handle_receive() argument
1307 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_handle_receive()
1309 if (atmel_use_pdc_rx(port)) { in atmel_handle_receive()
1318 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_handle_receive()
1326 atmel_pdc_rxerr(port, pending); in atmel_handle_receive()
1329 if (atmel_use_dma_rx(port)) { in atmel_handle_receive()
1331 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_handle_receive()
1340 atmel_rx_chars(port); in atmel_handle_receive()
1346 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_handle_receive()
1347 atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXBRK); in atmel_handle_receive()
1356 atmel_handle_transmit(struct uart_port *port, unsigned int pending) in atmel_handle_transmit() argument
1358 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_handle_transmit()
1361 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_handle_transmit()
1366 if (!(atmel_uart_readl(port, ATMEL_US_CSR) in atmel_handle_transmit()
1368 dev_warn(port->dev, "Should start RX, but TX fifo is not empty\n"); in atmel_handle_transmit()
1371 atmel_start_rx(port); in atmel_handle_transmit()
1382 atmel_handle_status(struct uart_port *port, unsigned int pending, in atmel_handle_status() argument
1385 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_handle_status()
1397 port->icount.rng++; in atmel_handle_status()
1399 port->icount.dsr++; in atmel_handle_status()
1401 uart_handle_dcd_change(port, !(status & ATMEL_US_DCD)); in atmel_handle_status()
1403 uart_handle_cts_change(port, !(status & ATMEL_US_CTS)); in atmel_handle_status()
1405 wake_up_interruptible(&port->state->port.delta_msr_wait); in atmel_handle_status()
1410 dev_dbg(port->dev, "ISO7816 ERROR (0x%08x)\n", pending); in atmel_handle_status()
1418 struct uart_port *port = dev_id; in atmel_interrupt() local
1419 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_interrupt()
1425 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_interrupt()
1426 mask = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_interrupt()
1434 atmel_uart_writel(port, ATMEL_US_IDR, mask); in atmel_interrupt()
1439 atmel_handle_receive(port, pending); in atmel_interrupt()
1440 atmel_handle_status(port, pending, status); in atmel_interrupt()
1441 atmel_handle_transmit(port, pending); in atmel_interrupt()
1449 static void atmel_release_tx_pdc(struct uart_port *port) in atmel_release_tx_pdc() argument
1451 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_tx_pdc()
1454 dma_unmap_single(port->dev, in atmel_release_tx_pdc()
1463 static void atmel_tx_pdc(struct uart_port *port) in atmel_tx_pdc() argument
1465 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_pdc()
1466 struct circ_buf *xmit = &port->state->xmit; in atmel_tx_pdc()
1471 if (atmel_uart_readl(port, ATMEL_PDC_TCR)) in atmel_tx_pdc()
1477 port->icount.tx += pdc->ofs; in atmel_tx_pdc()
1483 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS); in atmel_tx_pdc()
1485 if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) { in atmel_tx_pdc()
1486 dma_sync_single_for_device(port->dev, in atmel_tx_pdc()
1494 atmel_uart_writel(port, ATMEL_PDC_TPR, in atmel_tx_pdc()
1496 atmel_uart_writel(port, ATMEL_PDC_TCR, count); in atmel_tx_pdc()
1498 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); in atmel_tx_pdc()
1500 atmel_uart_writel(port, ATMEL_US_IER, in atmel_tx_pdc()
1503 if (atmel_uart_is_half_duplex(port)) { in atmel_tx_pdc()
1505 atmel_start_rx(port); in atmel_tx_pdc()
1510 uart_write_wakeup(port); in atmel_tx_pdc()
1513 static int atmel_prepare_tx_pdc(struct uart_port *port) in atmel_prepare_tx_pdc() argument
1515 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_tx_pdc()
1517 struct circ_buf *xmit = &port->state->xmit; in atmel_prepare_tx_pdc()
1520 pdc->dma_addr = dma_map_single(port->dev, in atmel_prepare_tx_pdc()
1530 static void atmel_rx_from_ring(struct uart_port *port) in atmel_rx_from_ring() argument
1532 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_from_ring()
1547 port->icount.rx++; in atmel_rx_from_ring()
1561 port->icount.brk++; in atmel_rx_from_ring()
1562 if (uart_handle_break(port)) in atmel_rx_from_ring()
1566 port->icount.parity++; in atmel_rx_from_ring()
1568 port->icount.frame++; in atmel_rx_from_ring()
1570 port->icount.overrun++; in atmel_rx_from_ring()
1572 status &= port->read_status_mask; in atmel_rx_from_ring()
1583 if (uart_handle_sysrq_char(port, c.ch)) in atmel_rx_from_ring()
1586 uart_insert_char(port, status, ATMEL_US_OVRE, c.ch, flg); in atmel_rx_from_ring()
1593 spin_unlock(&port->lock); in atmel_rx_from_ring()
1594 tty_flip_buffer_push(&port->state->port); in atmel_rx_from_ring()
1595 spin_lock(&port->lock); in atmel_rx_from_ring()
1598 static void atmel_release_rx_pdc(struct uart_port *port) in atmel_release_rx_pdc() argument
1600 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_rx_pdc()
1606 dma_unmap_single(port->dev, in atmel_release_rx_pdc()
1614 static void atmel_rx_from_pdc(struct uart_port *port) in atmel_rx_from_pdc() argument
1616 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_from_pdc()
1617 struct tty_port *tport = &port->state->port; in atmel_rx_from_pdc()
1626 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_rx_from_pdc()
1629 head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr; in atmel_rx_from_pdc()
1645 dma_sync_single_for_cpu(port->dev, pdc->dma_addr, in atmel_rx_from_pdc()
1659 dma_sync_single_for_device(port->dev, pdc->dma_addr, in atmel_rx_from_pdc()
1662 port->icount.rx += count; in atmel_rx_from_pdc()
1672 atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr); in atmel_rx_from_pdc()
1673 atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size); in atmel_rx_from_pdc()
1684 spin_unlock(&port->lock); in atmel_rx_from_pdc()
1686 spin_lock(&port->lock); in atmel_rx_from_pdc()
1688 atmel_uart_writel(port, ATMEL_US_IER, in atmel_rx_from_pdc()
1692 static int atmel_prepare_rx_pdc(struct uart_port *port) in atmel_prepare_rx_pdc() argument
1694 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_rx_pdc()
1703 dma_unmap_single(port->dev, in atmel_prepare_rx_pdc()
1712 pdc->dma_addr = dma_map_single(port->dev, in atmel_prepare_rx_pdc()
1722 atmel_uart_writel(port, ATMEL_PDC_RPR, atmel_port->pdc_rx[0].dma_addr); in atmel_prepare_rx_pdc()
1723 atmel_uart_writel(port, ATMEL_PDC_RCR, PDC_BUFFER_SIZE); in atmel_prepare_rx_pdc()
1725 atmel_uart_writel(port, ATMEL_PDC_RNPR, in atmel_prepare_rx_pdc()
1727 atmel_uart_writel(port, ATMEL_PDC_RNCR, PDC_BUFFER_SIZE); in atmel_prepare_rx_pdc()
1739 struct uart_port *port = &atmel_port->uart; in atmel_tasklet_rx_func() local
1742 spin_lock(&port->lock); in atmel_tasklet_rx_func()
1743 atmel_port->schedule_rx(port); in atmel_tasklet_rx_func()
1744 spin_unlock(&port->lock); in atmel_tasklet_rx_func()
1751 struct uart_port *port = &atmel_port->uart; in atmel_tasklet_tx_func() local
1754 spin_lock(&port->lock); in atmel_tasklet_tx_func()
1755 atmel_port->schedule_tx(port); in atmel_tasklet_tx_func()
1756 spin_unlock(&port->lock); in atmel_tasklet_tx_func()
1792 static void atmel_set_ops(struct uart_port *port) in atmel_set_ops() argument
1794 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_set_ops()
1796 if (atmel_use_dma_rx(port)) { in atmel_set_ops()
1800 } else if (atmel_use_pdc_rx(port)) { in atmel_set_ops()
1810 if (atmel_use_dma_tx(port)) { in atmel_set_ops()
1814 } else if (atmel_use_pdc_tx(port)) { in atmel_set_ops()
1828 static void atmel_get_ip_name(struct uart_port *port) in atmel_get_ip_name() argument
1830 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_get_ip_name()
1831 int name = atmel_uart_readl(port, ATMEL_US_NAME); in atmel_get_ip_name()
1849 dev_dbg(port->dev, "Uart with hw timer"); in atmel_get_ip_name()
1853 dev_dbg(port->dev, "Usart\n"); in atmel_get_ip_name()
1857 version = atmel_uart_readl(port, ATMEL_US_VERSION); in atmel_get_ip_name()
1874 dev_dbg(port->dev, "Dbgu or uart without hw timer\n"); in atmel_get_ip_name()
1877 version = atmel_uart_readl(port, ATMEL_US_VERSION); in atmel_get_ip_name()
1882 dev_dbg(port->dev, "This version is usart\n"); in atmel_get_ip_name()
1889 dev_dbg(port->dev, "This version is uart\n"); in atmel_get_ip_name()
1892 dev_err(port->dev, "Not supported ip name nor version, set to uart\n"); in atmel_get_ip_name()
1898 * Perform initialization and enable port for reception
1900 static int atmel_startup(struct uart_port *port) in atmel_startup() argument
1902 struct platform_device *pdev = to_platform_device(port->dev); in atmel_startup()
1903 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_startup()
1911 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_startup()
1917 retval = request_irq(port->irq, atmel_interrupt, in atmel_startup()
1919 dev_name(&pdev->dev), port); in atmel_startup()
1921 dev_err(port->dev, "atmel_startup - Can't get irq\n"); in atmel_startup()
1933 atmel_set_ops(port); in atmel_startup()
1936 retval = atmel_port->prepare_rx(port); in atmel_startup()
1938 atmel_set_ops(port); in atmel_startup()
1942 retval = atmel_port->prepare_tx(port); in atmel_startup()
1944 atmel_set_ops(port); in atmel_startup()
1955 atmel_uart_writel(port, ATMEL_US_CR, in atmel_startup()
1960 if (atmel_use_dma_tx(port)) in atmel_startup()
1970 atmel_uart_writel(port, ATMEL_US_FMR, fmr); in atmel_startup()
1974 atmel_port->irq_status_prev = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_startup()
1977 * Finally, enable the serial port in atmel_startup()
1979 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); in atmel_startup()
1981 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); in atmel_startup()
1986 if (atmel_use_pdc_rx(port)) { in atmel_startup()
1990 jiffies + uart_poll_timeout(port)); in atmel_startup()
1993 atmel_uart_writel(port, atmel_port->rtor, in atmel_startup()
1995 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_startup()
1997 atmel_uart_writel(port, ATMEL_US_IER, in atmel_startup()
2001 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); in atmel_startup()
2002 } else if (atmel_use_dma_rx(port)) { in atmel_startup()
2006 jiffies + uart_poll_timeout(port)); in atmel_startup()
2009 atmel_uart_writel(port, atmel_port->rtor, in atmel_startup()
2011 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_startup()
2013 atmel_uart_writel(port, ATMEL_US_IER, in atmel_startup()
2018 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY); in atmel_startup()
2028 static void atmel_flush_buffer(struct uart_port *port) in atmel_flush_buffer() argument
2030 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_flush_buffer()
2032 if (atmel_use_pdc_tx(port)) { in atmel_flush_buffer()
2033 atmel_uart_writel(port, ATMEL_PDC_TCR, 0); in atmel_flush_buffer()
2044 * Disable the port
2046 static void atmel_shutdown(struct uart_port *port) in atmel_shutdown() argument
2048 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_shutdown()
2051 atmel_disable_ms(port); in atmel_shutdown()
2054 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_shutdown()
2066 synchronize_irq(port->irq); in atmel_shutdown()
2077 * disable port and break condition. in atmel_shutdown()
2079 atmel_stop_rx(port); in atmel_shutdown()
2080 atmel_stop_tx(port); in atmel_shutdown()
2082 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_shutdown()
2088 atmel_port->release_rx(port); in atmel_shutdown()
2090 atmel_port->release_tx(port); in atmel_shutdown()
2101 free_irq(port->irq, port); in atmel_shutdown()
2103 atmel_flush_buffer(port); in atmel_shutdown()
2109 static void atmel_serial_pm(struct uart_port *port, unsigned int state, in atmel_serial_pm() argument
2112 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_pm()
2117 * Enable the peripheral clock for this serial port. in atmel_serial_pm()
2123 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->backup_imr); in atmel_serial_pm()
2127 atmel_port->backup_imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_serial_pm()
2128 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_serial_pm()
2131 * Disable the peripheral clock for this serial port. in atmel_serial_pm()
2137 dev_err(port->dev, "atmel_serial: unknown pm %d\n", state); in atmel_serial_pm()
2142 * Change the port parameters
2144 static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, in atmel_set_termios() argument
2147 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_set_termios()
2152 mode = old_mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_set_termios()
2158 baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16); in atmel_set_termios()
2195 spin_lock_irqsave(&port->lock, flags); in atmel_set_termios()
2197 port->read_status_mask = ATMEL_US_OVRE; in atmel_set_termios()
2199 port->read_status_mask |= (ATMEL_US_FRAME | ATMEL_US_PARE); in atmel_set_termios()
2201 port->read_status_mask |= ATMEL_US_RXBRK; in atmel_set_termios()
2203 if (atmel_use_pdc_rx(port)) in atmel_set_termios()
2205 atmel_uart_writel(port, ATMEL_US_IER, port->read_status_mask); in atmel_set_termios()
2210 port->ignore_status_mask = 0; in atmel_set_termios()
2212 port->ignore_status_mask |= (ATMEL_US_FRAME | ATMEL_US_PARE); in atmel_set_termios()
2214 port->ignore_status_mask |= ATMEL_US_RXBRK; in atmel_set_termios()
2220 port->ignore_status_mask |= ATMEL_US_OVRE; in atmel_set_termios()
2224 /* update the per-port timeout */ in atmel_set_termios()
2225 uart_update_timeout(port, termios->c_cflag, baud); in atmel_set_termios()
2232 imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_set_termios()
2233 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_set_termios()
2236 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXDIS); in atmel_set_termios()
2240 if (port->rs485.flags & SER_RS485_ENABLED) { in atmel_set_termios()
2241 atmel_uart_writel(port, ATMEL_US_TTGR, in atmel_set_termios()
2242 port->rs485.delay_rts_after_send); in atmel_set_termios()
2244 } else if (port->iso7816.flags & SER_ISO7816_ENABLED) { in atmel_set_termios()
2245 atmel_uart_writel(port, ATMEL_US_TTGR, port->iso7816.tg); in atmel_set_termios()
2250 if ((port->iso7816.flags & SER_ISO7816_T_PARAM) in atmel_set_termios()
2257 if (atmel_use_fifo(port) && in atmel_set_termios()
2297 div = DIV_ROUND_CLOSEST(port->uartclk, baud * 2); in atmel_set_termios()
2301 cd = uart_get_divisor(port, baud); in atmel_set_termios()
2310 if (!(port->iso7816.flags & SER_ISO7816_ENABLED)) in atmel_set_termios()
2311 atmel_uart_writel(port, ATMEL_US_BRGR, quot); in atmel_set_termios()
2314 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_set_termios()
2331 atmel_uart_writel(port, ATMEL_US_CR, rts_state); in atmel_set_termios()
2334 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); in atmel_set_termios()
2335 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); in atmel_set_termios()
2339 atmel_uart_writel(port, ATMEL_US_IER, imr); in atmel_set_termios()
2342 if (UART_ENABLE_MS(port, termios->c_cflag)) in atmel_set_termios()
2343 atmel_enable_ms(port); in atmel_set_termios()
2345 atmel_disable_ms(port); in atmel_set_termios()
2347 spin_unlock_irqrestore(&port->lock, flags); in atmel_set_termios()
2350 static void atmel_set_ldisc(struct uart_port *port, struct ktermios *termios) in atmel_set_ldisc() argument
2353 port->flags |= UPF_HARDPPS_CD; in atmel_set_ldisc()
2354 spin_lock_irq(&port->lock); in atmel_set_ldisc()
2355 atmel_enable_ms(port); in atmel_set_ldisc()
2356 spin_unlock_irq(&port->lock); in atmel_set_ldisc()
2358 port->flags &= ~UPF_HARDPPS_CD; in atmel_set_ldisc()
2359 if (!UART_ENABLE_MS(port, termios->c_cflag)) { in atmel_set_ldisc()
2360 spin_lock_irq(&port->lock); in atmel_set_ldisc()
2361 atmel_disable_ms(port); in atmel_set_ldisc()
2362 spin_unlock_irq(&port->lock); in atmel_set_ldisc()
2368 * Return string describing the specified port
2370 static const char *atmel_type(struct uart_port *port) in atmel_type() argument
2372 return (port->type == PORT_ATMEL) ? "ATMEL_SERIAL" : NULL; in atmel_type()
2376 * Release the memory region(s) being used by 'port'.
2378 static void atmel_release_port(struct uart_port *port) in atmel_release_port() argument
2380 struct platform_device *mpdev = to_platform_device(port->dev->parent); in atmel_release_port()
2383 release_mem_region(port->mapbase, size); in atmel_release_port()
2385 if (port->flags & UPF_IOREMAP) { in atmel_release_port()
2386 iounmap(port->membase); in atmel_release_port()
2387 port->membase = NULL; in atmel_release_port()
2392 * Request the memory region(s) being used by 'port'.
2394 static int atmel_request_port(struct uart_port *port) in atmel_request_port() argument
2396 struct platform_device *mpdev = to_platform_device(port->dev->parent); in atmel_request_port()
2399 if (!request_mem_region(port->mapbase, size, "atmel_serial")) in atmel_request_port()
2402 if (port->flags & UPF_IOREMAP) { in atmel_request_port()
2403 port->membase = ioremap(port->mapbase, size); in atmel_request_port()
2404 if (port->membase == NULL) { in atmel_request_port()
2405 release_mem_region(port->mapbase, size); in atmel_request_port()
2414 * Configure/autoconfigure the port.
2416 static void atmel_config_port(struct uart_port *port, int flags) in atmel_config_port() argument
2419 port->type = PORT_ATMEL; in atmel_config_port()
2420 atmel_request_port(port); in atmel_config_port()
2427 static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser) in atmel_verify_port() argument
2432 if (port->irq != ser->irq) in atmel_verify_port()
2436 if (port->uartclk / 16 != ser->baud_base) in atmel_verify_port()
2438 if (port->mapbase != (unsigned long)ser->iomem_base) in atmel_verify_port()
2440 if (port->iobase != ser->port) in atmel_verify_port()
2448 static int atmel_poll_get_char(struct uart_port *port) in atmel_poll_get_char() argument
2450 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_RXRDY)) in atmel_poll_get_char()
2453 return atmel_uart_read_char(port); in atmel_poll_get_char()
2456 static void atmel_poll_put_char(struct uart_port *port, unsigned char ch) in atmel_poll_put_char() argument
2458 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY)) in atmel_poll_put_char()
2461 atmel_uart_write_char(port, ch); in atmel_poll_put_char()
2492 * Configure the port from the platform device resource info.
2498 struct uart_port *port = &atmel_port->uart; in atmel_init_port() local
2502 atmel_set_ops(port); in atmel_init_port()
2504 port->iotype = UPIO_MEM; in atmel_init_port()
2505 port->flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP; in atmel_init_port()
2506 port->ops = &atmel_pops; in atmel_init_port()
2507 port->fifosize = 1; in atmel_init_port()
2508 port->dev = &pdev->dev; in atmel_init_port()
2509 port->mapbase = mpdev->resource[0].start; in atmel_init_port()
2510 port->irq = mpdev->resource[1].start; in atmel_init_port()
2511 port->rs485_config = atmel_config_rs485; in atmel_init_port()
2512 port->iso7816_config = atmel_config_iso7816; in atmel_init_port()
2513 port->membase = NULL; in atmel_init_port()
2517 ret = uart_get_rs485_mode(port); in atmel_init_port()
2535 port->uartclk = clk_get_rate(atmel_port->clk); in atmel_init_port()
2544 if (atmel_uart_is_half_duplex(port)) in atmel_init_port()
2546 else if (atmel_use_pdc_tx(port)) { in atmel_init_port()
2547 port->fifosize = PDC_BUFFER_SIZE; in atmel_init_port()
2557 static void atmel_console_putchar(struct uart_port *port, int ch) in atmel_console_putchar() argument
2559 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY)) in atmel_console_putchar()
2561 atmel_uart_write_char(port, ch); in atmel_console_putchar()
2569 struct uart_port *port = &atmel_ports[co->index].uart; in atmel_console_write() local
2570 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_console_write()
2577 imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_console_write()
2578 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_console_write()
2582 pdc_tx = atmel_uart_readl(port, ATMEL_PDC_PTSR) & ATMEL_PDC_TXTEN; in atmel_console_write()
2583 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS); in atmel_console_write()
2586 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN); in atmel_console_write()
2589 uart_console_write(port, s, count, atmel_console_putchar); in atmel_console_write()
2596 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_console_write()
2601 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); in atmel_console_write()
2604 atmel_uart_writel(port, ATMEL_US_IER, imr); in atmel_console_write()
2608 * If the port was already initialised (eg, by a boot loader),
2611 static void __init atmel_console_get_options(struct uart_port *port, int *baud, in atmel_console_get_options() argument
2617 * If the baud rate generator isn't running, the port wasn't in atmel_console_get_options()
2620 quot = atmel_uart_readl(port, ATMEL_US_BRGR) & ATMEL_US_CD; in atmel_console_get_options()
2624 mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_CHRL; in atmel_console_get_options()
2630 mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_PAR; in atmel_console_get_options()
2642 *baud = port->uartclk / (16 * (quot - 1)); in atmel_console_get_options()
2648 struct uart_port *port = &atmel_ports[co->index].uart; in atmel_console_setup() local
2649 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_console_setup()
2655 if (port->membase == NULL) { in atmel_console_setup()
2656 /* Port not initialized yet - delay setup */ in atmel_console_setup()
2664 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_console_setup()
2665 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); in atmel_console_setup()
2666 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); in atmel_console_setup()
2672 atmel_console_get_options(port, &baud, &parity, &bits); in atmel_console_setup()
2674 return uart_set_options(port, co, baud, parity, bits, flow); in atmel_console_setup()
2718 struct uart_port *port = platform_get_drvdata(pdev); in atmel_serial_suspend() local
2719 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_suspend()
2721 if (uart_console(port) && console_suspend_enabled) { in atmel_serial_suspend()
2723 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & in atmel_serial_suspend()
2728 if (uart_console(port) && !console_suspend_enabled) { in atmel_serial_suspend()
2732 atmel_port->cache.mr = atmel_uart_readl(port, ATMEL_US_MR); in atmel_serial_suspend()
2733 atmel_port->cache.imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_serial_suspend()
2734 atmel_port->cache.brgr = atmel_uart_readl(port, ATMEL_US_BRGR); in atmel_serial_suspend()
2735 atmel_port->cache.rtor = atmel_uart_readl(port, in atmel_serial_suspend()
2737 atmel_port->cache.ttgr = atmel_uart_readl(port, ATMEL_US_TTGR); in atmel_serial_suspend()
2738 atmel_port->cache.fmr = atmel_uart_readl(port, ATMEL_US_FMR); in atmel_serial_suspend()
2739 atmel_port->cache.fimr = atmel_uart_readl(port, ATMEL_US_FIMR); in atmel_serial_suspend()
2753 uart_suspend_port(&atmel_uart, port); in atmel_serial_suspend()
2760 struct uart_port *port = platform_get_drvdata(pdev); in atmel_serial_resume() local
2761 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_resume()
2764 if (uart_console(port) && !console_suspend_enabled) { in atmel_serial_resume()
2765 atmel_uart_writel(port, ATMEL_US_MR, atmel_port->cache.mr); in atmel_serial_resume()
2766 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->cache.imr); in atmel_serial_resume()
2767 atmel_uart_writel(port, ATMEL_US_BRGR, atmel_port->cache.brgr); in atmel_serial_resume()
2768 atmel_uart_writel(port, atmel_port->rtor, in atmel_serial_resume()
2770 atmel_uart_writel(port, ATMEL_US_TTGR, atmel_port->cache.ttgr); in atmel_serial_resume()
2773 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_FIFOEN | in atmel_serial_resume()
2775 atmel_uart_writel(port, ATMEL_US_FMR, in atmel_serial_resume()
2777 atmel_uart_writel(port, ATMEL_US_FIER, in atmel_serial_resume()
2780 atmel_start_rx(port); in atmel_serial_resume()
2785 atmel_handle_receive(port, atmel_port->pending); in atmel_serial_resume()
2786 atmel_handle_status(port, atmel_port->pending, in atmel_serial_resume()
2788 atmel_handle_transmit(port, atmel_port->pending); in atmel_serial_resume()
2794 uart_resume_port(&atmel_uart, port); in atmel_serial_resume()
2867 /* port id not found in platform data nor device-tree aliases: in atmel_serial_probe()
2877 /* port already in use */ in atmel_serial_probe()
2945 * Get port name of usart or uart in atmel_serial_probe()
2950 * The peripheral clock can now safely be disabled till the port in atmel_serial_probe()
2978 * port in the normal case.
2982 struct uart_port *port = platform_get_drvdata(pdev); in atmel_serial_remove() local
2983 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_remove()
2991 ret = uart_remove_one_port(&atmel_uart, port); in atmel_serial_remove()
2995 /* "port" is allocated statically, so we shouldn't free it */ in atmel_serial_remove()
2997 clear_bit(port->line, atmel_ports_in_use); in atmel_serial_remove()