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()
301 port->rs485 = *rs485conf; in atmel_config_rs485()
304 dev_dbg(port->dev, "Setting UART to RS485\n"); in atmel_config_rs485()
305 if (port->rs485.flags & SER_RS485_RX_DURING_TX) in atmel_config_rs485()
310 atmel_uart_writel(port, ATMEL_US_TTGR, in atmel_config_rs485()
314 dev_dbg(port->dev, "Setting UART to RS232\n"); in atmel_config_rs485()
315 if (atmel_use_pdc_tx(port)) in atmel_config_rs485()
321 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_config_rs485()
324 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask); in atmel_config_rs485()
329 static unsigned int atmel_calc_cd(struct uart_port *port, in atmel_calc_cd() argument
332 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_calc_cd()
342 static unsigned int atmel_calc_fidi(struct uart_port *port, in atmel_calc_fidi() argument
356 static int atmel_config_iso7816(struct uart_port *port, in atmel_config_iso7816() argument
359 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_config_iso7816()
365 atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask); in atmel_config_iso7816()
367 mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_config_iso7816()
373 dev_err(port->dev, "ISO7816: Timeguard exceeding 255\n"); in atmel_config_iso7816()
386 dev_err(port->dev, "ISO7816: Type not supported\n"); in atmel_config_iso7816()
399 cd = atmel_calc_cd(port, iso7816conf); in atmel_config_iso7816()
400 fidi = atmel_calc_fidi(port, iso7816conf); in atmel_config_iso7816()
402 dev_warn(port->dev, "ISO7816 fidi = 0, Generator generates no signal\n"); in atmel_config_iso7816()
405 dev_err(port->dev, "ISO7816 fidi = %u, value not supported\n", fidi); in atmel_config_iso7816()
411 if (!(port->iso7816.flags & SER_ISO7816_ENABLED)) { in atmel_config_iso7816()
412 /* port not yet in iso7816 mode: store configuration */ in atmel_config_iso7816()
413 atmel_port->backup_mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_config_iso7816()
414 atmel_port->backup_brgr = atmel_uart_readl(port, ATMEL_US_BRGR); in atmel_config_iso7816()
417 atmel_uart_writel(port, ATMEL_US_TTGR, iso7816conf->tg); in atmel_config_iso7816()
418 atmel_uart_writel(port, ATMEL_US_BRGR, cd); in atmel_config_iso7816()
419 atmel_uart_writel(port, ATMEL_US_FIDI, fidi); in atmel_config_iso7816()
421 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXEN); in atmel_config_iso7816()
424 dev_dbg(port->dev, "Setting UART back to RS232\n"); in atmel_config_iso7816()
428 atmel_uart_writel(port, ATMEL_US_TTGR, 0); in atmel_config_iso7816()
429 atmel_uart_writel(port, ATMEL_US_BRGR, atmel_port->backup_brgr); in atmel_config_iso7816()
430 atmel_uart_writel(port, ATMEL_US_FIDI, 0x174); in atmel_config_iso7816()
432 if (atmel_use_pdc_tx(port)) in atmel_config_iso7816()
439 port->iso7816 = *iso7816conf; in atmel_config_iso7816()
441 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_config_iso7816()
445 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask); in atmel_config_iso7816()
453 static u_int atmel_tx_empty(struct uart_port *port) in atmel_tx_empty() argument
455 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_empty()
459 return (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXEMPTY) ? in atmel_tx_empty()
467 static void atmel_set_mctrl(struct uart_port *port, u_int mctrl) in atmel_set_mctrl() argument
470 unsigned int mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_set_mctrl()
472 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_set_mctrl()
475 if (port->rs485.flags & SER_RS485_ENABLED) { in atmel_set_mctrl()
476 atmel_uart_writel(port, ATMEL_US_TTGR, in atmel_set_mctrl()
477 port->rs485.delay_rts_after_send); in atmel_set_mctrl()
507 atmel_uart_writel(port, ATMEL_US_CR, control); in atmel_set_mctrl()
518 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_set_mctrl()
524 static u_int atmel_get_mctrl(struct uart_port *port) in atmel_get_mctrl() argument
526 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_get_mctrl()
529 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_get_mctrl()
549 static void atmel_stop_tx(struct uart_port *port) in atmel_stop_tx() argument
551 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_stop_tx()
553 if (atmel_use_pdc_tx(port)) { in atmel_stop_tx()
555 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS); in atmel_stop_tx()
563 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS); in atmel_stop_tx()
567 atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask); in atmel_stop_tx()
569 if (atmel_uart_is_half_duplex(port)) in atmel_stop_tx()
571 atmel_start_rx(port); in atmel_stop_tx()
578 static void atmel_start_tx(struct uart_port *port) in atmel_start_tx() argument
580 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_start_tx()
582 if (atmel_use_pdc_tx(port) && (atmel_uart_readl(port, ATMEL_PDC_PTSR) in atmel_start_tx()
588 if (atmel_use_pdc_tx(port) || atmel_use_dma_tx(port)) in atmel_start_tx()
589 if (atmel_uart_is_half_duplex(port)) in atmel_start_tx()
590 atmel_stop_rx(port); in atmel_start_tx()
592 if (atmel_use_pdc_tx(port)) in atmel_start_tx()
594 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); in atmel_start_tx()
597 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask); in atmel_start_tx()
600 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN); in atmel_start_tx()
605 * start receiving - port is in process of being opened.
607 static void atmel_start_rx(struct uart_port *port) in atmel_start_rx() argument
610 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_start_rx()
612 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXEN); in atmel_start_rx()
614 if (atmel_use_pdc_rx(port)) { in atmel_start_rx()
616 atmel_uart_writel(port, ATMEL_US_IER, in atmel_start_rx()
618 port->read_status_mask); in atmel_start_rx()
619 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); in atmel_start_rx()
621 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY); in atmel_start_rx()
626 * Stop receiving - port is in process of being closed.
628 static void atmel_stop_rx(struct uart_port *port) in atmel_stop_rx() argument
630 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXDIS); in atmel_stop_rx()
632 if (atmel_use_pdc_rx(port)) { in atmel_stop_rx()
634 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS); in atmel_stop_rx()
635 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_stop_rx()
637 port->read_status_mask); in atmel_stop_rx()
639 atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXRDY); in atmel_stop_rx()
646 static void atmel_enable_ms(struct uart_port *port) in atmel_enable_ms() argument
648 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_enable_ms()
671 atmel_uart_writel(port, ATMEL_US_IER, ier); in atmel_enable_ms()
679 static void atmel_disable_ms(struct uart_port *port) in atmel_disable_ms() argument
681 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_disable_ms()
706 atmel_uart_writel(port, ATMEL_US_IDR, idr); in atmel_disable_ms()
712 static void atmel_break_ctl(struct uart_port *port, int break_state) in atmel_break_ctl() argument
716 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTBRK); in atmel_break_ctl()
719 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STPBRK); in atmel_break_ctl()
726 atmel_buffer_rx_char(struct uart_port *port, unsigned int status, in atmel_buffer_rx_char() argument
729 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_buffer_rx_char()
750 static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status) in atmel_pdc_rxerr() argument
753 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_pdc_rxerr()
758 port->icount.brk++; in atmel_pdc_rxerr()
761 port->icount.parity++; in atmel_pdc_rxerr()
763 port->icount.frame++; in atmel_pdc_rxerr()
765 port->icount.overrun++; in atmel_pdc_rxerr()
771 static void atmel_rx_chars(struct uart_port *port) in atmel_rx_chars() argument
773 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_chars()
776 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_rx_chars()
778 ch = atmel_uart_read_char(port); in atmel_rx_chars()
789 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_rx_chars()
794 atmel_uart_writel(port, ATMEL_US_IER, in atmel_rx_chars()
804 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_rx_chars()
811 atmel_buffer_rx_char(port, status, ch); in atmel_rx_chars()
812 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_rx_chars()
822 static void atmel_tx_chars(struct uart_port *port) in atmel_tx_chars() argument
824 struct circ_buf *xmit = &port->state->xmit; in atmel_tx_chars()
825 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_chars()
827 if (port->x_char && in atmel_tx_chars()
828 (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY)) { in atmel_tx_chars()
829 atmel_uart_write_char(port, port->x_char); in atmel_tx_chars()
830 port->icount.tx++; in atmel_tx_chars()
831 port->x_char = 0; in atmel_tx_chars()
833 if (uart_circ_empty(xmit) || uart_tx_stopped(port)) in atmel_tx_chars()
836 while (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY) { in atmel_tx_chars()
837 atmel_uart_write_char(port, xmit->buf[xmit->tail]); in atmel_tx_chars()
839 port->icount.tx++; in atmel_tx_chars()
845 uart_write_wakeup(port); in atmel_tx_chars()
855 atmel_uart_writel(port, ATMEL_US_IER, in atmel_tx_chars()
858 if (atmel_uart_is_half_duplex(port)) in atmel_tx_chars()
866 struct uart_port *port = &atmel_port->uart; in atmel_complete_tx_dma() local
867 struct circ_buf *xmit = &port->state->xmit; in atmel_complete_tx_dma()
871 spin_lock_irqsave(&port->lock, flags); in atmel_complete_tx_dma()
878 port->icount.tx += atmel_port->tx_len; in atmel_complete_tx_dma()
887 uart_write_wakeup(port); in atmel_complete_tx_dma()
896 else if (atmel_uart_is_half_duplex(port)) { in atmel_complete_tx_dma()
902 atmel_uart_writel(port, ATMEL_US_IER, in atmel_complete_tx_dma()
906 spin_unlock_irqrestore(&port->lock, flags); in atmel_complete_tx_dma()
909 static void atmel_release_tx_dma(struct uart_port *port) in atmel_release_tx_dma() argument
911 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_tx_dma()
917 dma_unmap_sg(port->dev, &atmel_port->sg_tx, 1, in atmel_release_tx_dma()
929 static void atmel_tx_dma(struct uart_port *port) in atmel_tx_dma() argument
931 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_dma()
932 struct circ_buf *xmit = &port->state->xmit; in atmel_tx_dma()
943 if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) { in atmel_tx_dma()
946 * Port xmit buffer is already mapped, in atmel_tx_dma()
950 * Take the port lock to get a in atmel_tx_dma()
997 dev_err(port->dev, "Failed to send via dma!\n"); in atmel_tx_dma()
1001 dma_sync_sg_for_device(port->dev, sg_tx, 1, DMA_TO_DEVICE); in atmel_tx_dma()
1010 uart_write_wakeup(port); in atmel_tx_dma()
1013 static int atmel_prepare_tx_dma(struct uart_port *port) in atmel_prepare_tx_dma() argument
1015 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_tx_dma()
1016 struct device *mfd_dev = port->dev->parent; in atmel_prepare_tx_dma()
1027 dev_info(port->dev, "using %s for tx DMA transfers\n", in atmel_prepare_tx_dma()
1033 BUG_ON(!PAGE_ALIGNED(port->state->xmit.buf)); in atmel_prepare_tx_dma()
1035 virt_to_page(port->state->xmit.buf), in atmel_prepare_tx_dma()
1037 offset_in_page(port->state->xmit.buf)); in atmel_prepare_tx_dma()
1038 nent = dma_map_sg(port->dev, in atmel_prepare_tx_dma()
1044 dev_dbg(port->dev, "need to release resource of dma\n"); in atmel_prepare_tx_dma()
1047 dev_dbg(port->dev, "%s: mapped %d@%p to %pad\n", __func__, in atmel_prepare_tx_dma()
1049 port->state->xmit.buf, in atmel_prepare_tx_dma()
1059 config.dst_addr = port->mapbase + ATMEL_US_THR; in atmel_prepare_tx_dma()
1065 dev_err(port->dev, "DMA tx slave configuration failed\n"); in atmel_prepare_tx_dma()
1072 dev_err(port->dev, "TX channel not available, switch to pio\n"); in atmel_prepare_tx_dma()
1075 atmel_release_tx_dma(port); in atmel_prepare_tx_dma()
1081 struct uart_port *port = arg; in atmel_complete_rx_dma() local
1082 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_complete_rx_dma()
1087 static void atmel_release_rx_dma(struct uart_port *port) in atmel_release_rx_dma() argument
1089 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_rx_dma()
1095 dma_unmap_sg(port->dev, &atmel_port->sg_rx, 1, in atmel_release_rx_dma()
1104 static void atmel_rx_from_dma(struct uart_port *port) in atmel_rx_from_dma() argument
1106 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_from_dma()
1107 struct tty_port *tport = &port->state->port; in atmel_rx_from_dma()
1116 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_rx_from_dma()
1122 dev_dbg(port->dev, "Get residue error, restart tasklet\n"); in atmel_rx_from_dma()
1123 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT); in atmel_rx_from_dma()
1129 dma_sync_sg_for_cpu(port->dev, in atmel_rx_from_dma()
1160 port->icount.rx += count; in atmel_rx_from_dma()
1172 port->icount.rx += count; in atmel_rx_from_dma()
1176 dma_sync_sg_for_device(port->dev, in atmel_rx_from_dma()
1185 spin_unlock(&port->lock); in atmel_rx_from_dma()
1187 spin_lock(&port->lock); in atmel_rx_from_dma()
1189 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT); in atmel_rx_from_dma()
1192 static int atmel_prepare_rx_dma(struct uart_port *port) in atmel_prepare_rx_dma() argument
1194 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_rx_dma()
1195 struct device *mfd_dev = port->dev->parent; in atmel_prepare_rx_dma()
1210 dev_info(port->dev, "using %s for rx DMA transfers\n", in atmel_prepare_rx_dma()
1221 nent = dma_map_sg(port->dev, in atmel_prepare_rx_dma()
1227 dev_dbg(port->dev, "need to release resource of dma\n"); in atmel_prepare_rx_dma()
1230 dev_dbg(port->dev, "%s: mapped %d@%p to %pad\n", __func__, in atmel_prepare_rx_dma()
1240 config.src_addr = port->mapbase + ATMEL_US_RHR; in atmel_prepare_rx_dma()
1246 dev_err(port->dev, "DMA rx slave configuration failed\n"); in atmel_prepare_rx_dma()
1260 dev_err(port->dev, "Preparing DMA cyclic failed\n"); in atmel_prepare_rx_dma()
1264 desc->callback_param = port; in atmel_prepare_rx_dma()
1271 dev_err(port->dev, "RX channel not available, switch to pio\n"); in atmel_prepare_rx_dma()
1274 atmel_release_rx_dma(port); in atmel_prepare_rx_dma()
1282 struct uart_port *port = &atmel_port->uart; in atmel_uart_timer_callback() local
1287 jiffies + uart_poll_timeout(port)); in atmel_uart_timer_callback()
1295 atmel_handle_receive(struct uart_port *port, unsigned int pending) in atmel_handle_receive() argument
1297 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_handle_receive()
1299 if (atmel_use_pdc_rx(port)) { in atmel_handle_receive()
1308 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_handle_receive()
1316 atmel_pdc_rxerr(port, pending); in atmel_handle_receive()
1319 if (atmel_use_dma_rx(port)) { in atmel_handle_receive()
1321 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_handle_receive()
1330 atmel_rx_chars(port); in atmel_handle_receive()
1336 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_handle_receive()
1337 atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXBRK); in atmel_handle_receive()
1346 atmel_handle_transmit(struct uart_port *port, unsigned int pending) in atmel_handle_transmit() argument
1348 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_handle_transmit()
1351 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_handle_transmit()
1356 if (!(atmel_uart_readl(port, ATMEL_US_CSR) in atmel_handle_transmit()
1358 dev_warn(port->dev, "Should start RX, but TX fifo is not empty\n"); in atmel_handle_transmit()
1361 atmel_start_rx(port); in atmel_handle_transmit()
1372 atmel_handle_status(struct uart_port *port, unsigned int pending, in atmel_handle_status() argument
1375 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_handle_status()
1387 port->icount.rng++; in atmel_handle_status()
1389 port->icount.dsr++; in atmel_handle_status()
1391 uart_handle_dcd_change(port, !(status & ATMEL_US_DCD)); in atmel_handle_status()
1393 uart_handle_cts_change(port, !(status & ATMEL_US_CTS)); in atmel_handle_status()
1395 wake_up_interruptible(&port->state->port.delta_msr_wait); in atmel_handle_status()
1400 dev_dbg(port->dev, "ISO7816 ERROR (0x%08x)\n", pending); in atmel_handle_status()
1408 struct uart_port *port = dev_id; in atmel_interrupt() local
1409 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_interrupt()
1415 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_interrupt()
1416 mask = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_interrupt()
1424 atmel_uart_writel(port, ATMEL_US_IDR, mask); in atmel_interrupt()
1429 atmel_handle_receive(port, pending); in atmel_interrupt()
1430 atmel_handle_status(port, pending, status); in atmel_interrupt()
1431 atmel_handle_transmit(port, pending); in atmel_interrupt()
1439 static void atmel_release_tx_pdc(struct uart_port *port) in atmel_release_tx_pdc() argument
1441 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_tx_pdc()
1444 dma_unmap_single(port->dev, in atmel_release_tx_pdc()
1453 static void atmel_tx_pdc(struct uart_port *port) in atmel_tx_pdc() argument
1455 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_tx_pdc()
1456 struct circ_buf *xmit = &port->state->xmit; in atmel_tx_pdc()
1461 if (atmel_uart_readl(port, ATMEL_PDC_TCR)) in atmel_tx_pdc()
1467 port->icount.tx += pdc->ofs; in atmel_tx_pdc()
1473 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS); in atmel_tx_pdc()
1475 if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) { in atmel_tx_pdc()
1476 dma_sync_single_for_device(port->dev, in atmel_tx_pdc()
1484 atmel_uart_writel(port, ATMEL_PDC_TPR, in atmel_tx_pdc()
1486 atmel_uart_writel(port, ATMEL_PDC_TCR, count); in atmel_tx_pdc()
1488 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); in atmel_tx_pdc()
1490 atmel_uart_writel(port, ATMEL_US_IER, in atmel_tx_pdc()
1493 if (atmel_uart_is_half_duplex(port)) { in atmel_tx_pdc()
1495 atmel_start_rx(port); in atmel_tx_pdc()
1500 uart_write_wakeup(port); in atmel_tx_pdc()
1503 static int atmel_prepare_tx_pdc(struct uart_port *port) in atmel_prepare_tx_pdc() argument
1505 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_tx_pdc()
1507 struct circ_buf *xmit = &port->state->xmit; in atmel_prepare_tx_pdc()
1510 pdc->dma_addr = dma_map_single(port->dev, in atmel_prepare_tx_pdc()
1520 static void atmel_rx_from_ring(struct uart_port *port) in atmel_rx_from_ring() argument
1522 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_from_ring()
1537 port->icount.rx++; in atmel_rx_from_ring()
1551 port->icount.brk++; in atmel_rx_from_ring()
1552 if (uart_handle_break(port)) in atmel_rx_from_ring()
1556 port->icount.parity++; in atmel_rx_from_ring()
1558 port->icount.frame++; in atmel_rx_from_ring()
1560 port->icount.overrun++; in atmel_rx_from_ring()
1562 status &= port->read_status_mask; in atmel_rx_from_ring()
1573 if (uart_handle_sysrq_char(port, c.ch)) in atmel_rx_from_ring()
1576 uart_insert_char(port, status, ATMEL_US_OVRE, c.ch, flg); in atmel_rx_from_ring()
1583 spin_unlock(&port->lock); in atmel_rx_from_ring()
1584 tty_flip_buffer_push(&port->state->port); in atmel_rx_from_ring()
1585 spin_lock(&port->lock); in atmel_rx_from_ring()
1588 static void atmel_release_rx_pdc(struct uart_port *port) in atmel_release_rx_pdc() argument
1590 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_release_rx_pdc()
1596 dma_unmap_single(port->dev, in atmel_release_rx_pdc()
1604 static void atmel_rx_from_pdc(struct uart_port *port) in atmel_rx_from_pdc() argument
1606 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_rx_from_pdc()
1607 struct tty_port *tport = &port->state->port; in atmel_rx_from_pdc()
1616 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_rx_from_pdc()
1619 head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr; in atmel_rx_from_pdc()
1635 dma_sync_single_for_cpu(port->dev, pdc->dma_addr, in atmel_rx_from_pdc()
1649 dma_sync_single_for_device(port->dev, pdc->dma_addr, in atmel_rx_from_pdc()
1652 port->icount.rx += count; in atmel_rx_from_pdc()
1662 atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr); in atmel_rx_from_pdc()
1663 atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size); in atmel_rx_from_pdc()
1674 spin_unlock(&port->lock); in atmel_rx_from_pdc()
1676 spin_lock(&port->lock); in atmel_rx_from_pdc()
1678 atmel_uart_writel(port, ATMEL_US_IER, in atmel_rx_from_pdc()
1682 static int atmel_prepare_rx_pdc(struct uart_port *port) in atmel_prepare_rx_pdc() argument
1684 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_prepare_rx_pdc()
1693 dma_unmap_single(port->dev, in atmel_prepare_rx_pdc()
1702 pdc->dma_addr = dma_map_single(port->dev, in atmel_prepare_rx_pdc()
1712 atmel_uart_writel(port, ATMEL_PDC_RPR, atmel_port->pdc_rx[0].dma_addr); in atmel_prepare_rx_pdc()
1713 atmel_uart_writel(port, ATMEL_PDC_RCR, PDC_BUFFER_SIZE); in atmel_prepare_rx_pdc()
1715 atmel_uart_writel(port, ATMEL_PDC_RNPR, in atmel_prepare_rx_pdc()
1717 atmel_uart_writel(port, ATMEL_PDC_RNCR, PDC_BUFFER_SIZE); in atmel_prepare_rx_pdc()
1729 struct uart_port *port = &atmel_port->uart; in atmel_tasklet_rx_func() local
1732 spin_lock(&port->lock); in atmel_tasklet_rx_func()
1733 atmel_port->schedule_rx(port); in atmel_tasklet_rx_func()
1734 spin_unlock(&port->lock); in atmel_tasklet_rx_func()
1741 struct uart_port *port = &atmel_port->uart; in atmel_tasklet_tx_func() local
1744 spin_lock(&port->lock); in atmel_tasklet_tx_func()
1745 atmel_port->schedule_tx(port); in atmel_tasklet_tx_func()
1746 spin_unlock(&port->lock); in atmel_tasklet_tx_func()
1782 static void atmel_set_ops(struct uart_port *port) in atmel_set_ops() argument
1784 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_set_ops()
1786 if (atmel_use_dma_rx(port)) { in atmel_set_ops()
1790 } else if (atmel_use_pdc_rx(port)) { in atmel_set_ops()
1800 if (atmel_use_dma_tx(port)) { in atmel_set_ops()
1804 } else if (atmel_use_pdc_tx(port)) { in atmel_set_ops()
1818 static void atmel_get_ip_name(struct uart_port *port) in atmel_get_ip_name() argument
1820 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_get_ip_name()
1821 int name = atmel_uart_readl(port, ATMEL_US_NAME); in atmel_get_ip_name()
1839 dev_dbg(port->dev, "Uart with hw timer"); in atmel_get_ip_name()
1843 dev_dbg(port->dev, "Usart\n"); in atmel_get_ip_name()
1847 version = atmel_uart_readl(port, ATMEL_US_VERSION); in atmel_get_ip_name()
1864 dev_dbg(port->dev, "Dbgu or uart without hw timer\n"); in atmel_get_ip_name()
1867 version = atmel_uart_readl(port, ATMEL_US_VERSION); in atmel_get_ip_name()
1872 dev_dbg(port->dev, "This version is usart\n"); in atmel_get_ip_name()
1879 dev_dbg(port->dev, "This version is uart\n"); in atmel_get_ip_name()
1882 dev_err(port->dev, "Not supported ip name nor version, set to uart\n"); in atmel_get_ip_name()
1888 * Perform initialization and enable port for reception
1890 static int atmel_startup(struct uart_port *port) in atmel_startup() argument
1892 struct platform_device *pdev = to_platform_device(port->dev); in atmel_startup()
1893 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_startup()
1901 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_startup()
1907 retval = request_irq(port->irq, atmel_interrupt, in atmel_startup()
1909 dev_name(&pdev->dev), port); in atmel_startup()
1911 dev_err(port->dev, "atmel_startup - Can't get irq\n"); in atmel_startup()
1923 atmel_set_ops(port); in atmel_startup()
1926 retval = atmel_port->prepare_rx(port); in atmel_startup()
1928 atmel_set_ops(port); in atmel_startup()
1932 retval = atmel_port->prepare_tx(port); in atmel_startup()
1934 atmel_set_ops(port); in atmel_startup()
1945 atmel_uart_writel(port, ATMEL_US_CR, in atmel_startup()
1950 if (atmel_use_dma_tx(port)) in atmel_startup()
1960 atmel_uart_writel(port, ATMEL_US_FMR, fmr); in atmel_startup()
1964 atmel_port->irq_status_prev = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_startup()
1967 * Finally, enable the serial port in atmel_startup()
1969 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); in atmel_startup()
1971 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); in atmel_startup()
1976 if (atmel_use_pdc_rx(port)) { in atmel_startup()
1980 jiffies + uart_poll_timeout(port)); in atmel_startup()
1983 atmel_uart_writel(port, atmel_port->rtor, in atmel_startup()
1985 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_startup()
1987 atmel_uart_writel(port, ATMEL_US_IER, in atmel_startup()
1991 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); in atmel_startup()
1992 } else if (atmel_use_dma_rx(port)) { in atmel_startup()
1996 jiffies + uart_poll_timeout(port)); in atmel_startup()
1999 atmel_uart_writel(port, atmel_port->rtor, in atmel_startup()
2001 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); in atmel_startup()
2003 atmel_uart_writel(port, ATMEL_US_IER, in atmel_startup()
2008 atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY); in atmel_startup()
2018 static void atmel_flush_buffer(struct uart_port *port) in atmel_flush_buffer() argument
2020 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_flush_buffer()
2022 if (atmel_use_pdc_tx(port)) { in atmel_flush_buffer()
2023 atmel_uart_writel(port, ATMEL_PDC_TCR, 0); in atmel_flush_buffer()
2034 * Disable the port
2036 static void atmel_shutdown(struct uart_port *port) in atmel_shutdown() argument
2038 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_shutdown()
2041 atmel_disable_ms(port); in atmel_shutdown()
2044 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_shutdown()
2056 synchronize_irq(port->irq); in atmel_shutdown()
2067 * disable port and break condition. in atmel_shutdown()
2069 atmel_stop_rx(port); in atmel_shutdown()
2070 atmel_stop_tx(port); in atmel_shutdown()
2072 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA); in atmel_shutdown()
2078 atmel_port->release_rx(port); in atmel_shutdown()
2080 atmel_port->release_tx(port); in atmel_shutdown()
2091 free_irq(port->irq, port); in atmel_shutdown()
2093 atmel_flush_buffer(port); in atmel_shutdown()
2099 static void atmel_serial_pm(struct uart_port *port, unsigned int state, in atmel_serial_pm() argument
2102 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_pm()
2107 * Enable the peripheral clock for this serial port. in atmel_serial_pm()
2113 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->backup_imr); in atmel_serial_pm()
2117 atmel_port->backup_imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_serial_pm()
2118 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_serial_pm()
2121 * Disable the peripheral clock for this serial port. in atmel_serial_pm()
2127 dev_err(port->dev, "atmel_serial: unknown pm %d\n", state); in atmel_serial_pm()
2132 * Change the port parameters
2134 static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, in atmel_set_termios() argument
2137 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_set_termios()
2142 mode = old_mode = atmel_uart_readl(port, ATMEL_US_MR); in atmel_set_termios()
2148 baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16); in atmel_set_termios()
2185 spin_lock_irqsave(&port->lock, flags); in atmel_set_termios()
2187 port->read_status_mask = ATMEL_US_OVRE; in atmel_set_termios()
2189 port->read_status_mask |= (ATMEL_US_FRAME | ATMEL_US_PARE); in atmel_set_termios()
2191 port->read_status_mask |= ATMEL_US_RXBRK; in atmel_set_termios()
2193 if (atmel_use_pdc_rx(port)) in atmel_set_termios()
2195 atmel_uart_writel(port, ATMEL_US_IER, port->read_status_mask); in atmel_set_termios()
2200 port->ignore_status_mask = 0; in atmel_set_termios()
2202 port->ignore_status_mask |= (ATMEL_US_FRAME | ATMEL_US_PARE); in atmel_set_termios()
2204 port->ignore_status_mask |= ATMEL_US_RXBRK; in atmel_set_termios()
2210 port->ignore_status_mask |= ATMEL_US_OVRE; in atmel_set_termios()
2214 /* update the per-port timeout */ in atmel_set_termios()
2215 uart_update_timeout(port, termios->c_cflag, baud); in atmel_set_termios()
2222 imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_set_termios()
2223 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_set_termios()
2226 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXDIS); in atmel_set_termios()
2230 if (port->rs485.flags & SER_RS485_ENABLED) { in atmel_set_termios()
2231 atmel_uart_writel(port, ATMEL_US_TTGR, in atmel_set_termios()
2232 port->rs485.delay_rts_after_send); in atmel_set_termios()
2234 } else if (port->iso7816.flags & SER_ISO7816_ENABLED) { in atmel_set_termios()
2235 atmel_uart_writel(port, ATMEL_US_TTGR, port->iso7816.tg); in atmel_set_termios()
2240 if ((port->iso7816.flags & SER_ISO7816_T_PARAM) in atmel_set_termios()
2247 if (atmel_use_fifo(port) && in atmel_set_termios()
2287 div = DIV_ROUND_CLOSEST(port->uartclk, baud * 2); in atmel_set_termios()
2291 cd = uart_get_divisor(port, baud); in atmel_set_termios()
2300 if (!(port->iso7816.flags & SER_ISO7816_ENABLED)) in atmel_set_termios()
2301 atmel_uart_writel(port, ATMEL_US_BRGR, quot); in atmel_set_termios()
2304 atmel_uart_writel(port, ATMEL_US_MR, mode); in atmel_set_termios()
2321 atmel_uart_writel(port, ATMEL_US_CR, rts_state); in atmel_set_termios()
2324 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); in atmel_set_termios()
2325 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); in atmel_set_termios()
2329 atmel_uart_writel(port, ATMEL_US_IER, imr); in atmel_set_termios()
2332 if (UART_ENABLE_MS(port, termios->c_cflag)) in atmel_set_termios()
2333 atmel_enable_ms(port); in atmel_set_termios()
2335 atmel_disable_ms(port); in atmel_set_termios()
2337 spin_unlock_irqrestore(&port->lock, flags); in atmel_set_termios()
2340 static void atmel_set_ldisc(struct uart_port *port, struct ktermios *termios) in atmel_set_ldisc() argument
2343 port->flags |= UPF_HARDPPS_CD; in atmel_set_ldisc()
2344 spin_lock_irq(&port->lock); in atmel_set_ldisc()
2345 atmel_enable_ms(port); in atmel_set_ldisc()
2346 spin_unlock_irq(&port->lock); in atmel_set_ldisc()
2348 port->flags &= ~UPF_HARDPPS_CD; in atmel_set_ldisc()
2349 if (!UART_ENABLE_MS(port, termios->c_cflag)) { in atmel_set_ldisc()
2350 spin_lock_irq(&port->lock); in atmel_set_ldisc()
2351 atmel_disable_ms(port); in atmel_set_ldisc()
2352 spin_unlock_irq(&port->lock); in atmel_set_ldisc()
2358 * Return string describing the specified port
2360 static const char *atmel_type(struct uart_port *port) in atmel_type() argument
2362 return (port->type == PORT_ATMEL) ? "ATMEL_SERIAL" : NULL; in atmel_type()
2366 * Release the memory region(s) being used by 'port'.
2368 static void atmel_release_port(struct uart_port *port) in atmel_release_port() argument
2370 struct platform_device *mpdev = to_platform_device(port->dev->parent); in atmel_release_port()
2373 release_mem_region(port->mapbase, size); in atmel_release_port()
2375 if (port->flags & UPF_IOREMAP) { in atmel_release_port()
2376 iounmap(port->membase); in atmel_release_port()
2377 port->membase = NULL; in atmel_release_port()
2382 * Request the memory region(s) being used by 'port'.
2384 static int atmel_request_port(struct uart_port *port) in atmel_request_port() argument
2386 struct platform_device *mpdev = to_platform_device(port->dev->parent); in atmel_request_port()
2389 if (!request_mem_region(port->mapbase, size, "atmel_serial")) in atmel_request_port()
2392 if (port->flags & UPF_IOREMAP) { in atmel_request_port()
2393 port->membase = ioremap(port->mapbase, size); in atmel_request_port()
2394 if (port->membase == NULL) { in atmel_request_port()
2395 release_mem_region(port->mapbase, size); in atmel_request_port()
2404 * Configure/autoconfigure the port.
2406 static void atmel_config_port(struct uart_port *port, int flags) in atmel_config_port() argument
2409 port->type = PORT_ATMEL; in atmel_config_port()
2410 atmel_request_port(port); in atmel_config_port()
2417 static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser) in atmel_verify_port() argument
2422 if (port->irq != ser->irq) in atmel_verify_port()
2426 if (port->uartclk / 16 != ser->baud_base) in atmel_verify_port()
2428 if (port->mapbase != (unsigned long)ser->iomem_base) in atmel_verify_port()
2430 if (port->iobase != ser->port) in atmel_verify_port()
2438 static int atmel_poll_get_char(struct uart_port *port) in atmel_poll_get_char() argument
2440 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_RXRDY)) in atmel_poll_get_char()
2443 return atmel_uart_read_char(port); in atmel_poll_get_char()
2446 static void atmel_poll_put_char(struct uart_port *port, unsigned char ch) in atmel_poll_put_char() argument
2448 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY)) in atmel_poll_put_char()
2451 atmel_uart_write_char(port, ch); in atmel_poll_put_char()
2482 * Configure the port from the platform device resource info.
2488 struct uart_port *port = &atmel_port->uart; in atmel_init_port() local
2492 atmel_set_ops(port); in atmel_init_port()
2494 port->iotype = UPIO_MEM; in atmel_init_port()
2495 port->flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP; in atmel_init_port()
2496 port->ops = &atmel_pops; in atmel_init_port()
2497 port->fifosize = 1; in atmel_init_port()
2498 port->dev = &pdev->dev; in atmel_init_port()
2499 port->mapbase = mpdev->resource[0].start; in atmel_init_port()
2500 port->irq = mpdev->resource[1].start; in atmel_init_port()
2501 port->rs485_config = atmel_config_rs485; in atmel_init_port()
2502 port->iso7816_config = atmel_config_iso7816; in atmel_init_port()
2503 port->membase = NULL; in atmel_init_port()
2507 ret = uart_get_rs485_mode(port); in atmel_init_port()
2525 port->uartclk = clk_get_rate(atmel_port->clk); in atmel_init_port()
2534 if (atmel_uart_is_half_duplex(port)) in atmel_init_port()
2536 else if (atmel_use_pdc_tx(port)) { in atmel_init_port()
2537 port->fifosize = PDC_BUFFER_SIZE; in atmel_init_port()
2547 static void atmel_console_putchar(struct uart_port *port, int ch) in atmel_console_putchar() argument
2549 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY)) in atmel_console_putchar()
2551 atmel_uart_write_char(port, ch); in atmel_console_putchar()
2559 struct uart_port *port = &atmel_ports[co->index].uart; in atmel_console_write() local
2560 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_console_write()
2567 imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_console_write()
2568 atmel_uart_writel(port, ATMEL_US_IDR, in atmel_console_write()
2572 pdc_tx = atmel_uart_readl(port, ATMEL_PDC_PTSR) & ATMEL_PDC_TXTEN; in atmel_console_write()
2573 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS); in atmel_console_write()
2576 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN); in atmel_console_write()
2579 uart_console_write(port, s, count, atmel_console_putchar); in atmel_console_write()
2586 status = atmel_uart_readl(port, ATMEL_US_CSR); in atmel_console_write()
2591 atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); in atmel_console_write()
2594 atmel_uart_writel(port, ATMEL_US_IER, imr); in atmel_console_write()
2598 * If the port was already initialised (eg, by a boot loader),
2601 static void __init atmel_console_get_options(struct uart_port *port, int *baud, in atmel_console_get_options() argument
2607 * If the baud rate generator isn't running, the port wasn't in atmel_console_get_options()
2610 quot = atmel_uart_readl(port, ATMEL_US_BRGR) & ATMEL_US_CD; in atmel_console_get_options()
2614 mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_CHRL; in atmel_console_get_options()
2620 mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_PAR; in atmel_console_get_options()
2632 *baud = port->uartclk / (16 * (quot - 1)); in atmel_console_get_options()
2638 struct uart_port *port = &atmel_ports[co->index].uart; in atmel_console_setup() local
2639 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_console_setup()
2645 if (port->membase == NULL) { in atmel_console_setup()
2646 /* Port not initialized yet - delay setup */ in atmel_console_setup()
2654 atmel_uart_writel(port, ATMEL_US_IDR, -1); in atmel_console_setup()
2655 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); in atmel_console_setup()
2656 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); in atmel_console_setup()
2662 atmel_console_get_options(port, &baud, &parity, &bits); in atmel_console_setup()
2664 return uart_set_options(port, co, baud, parity, bits, flow); in atmel_console_setup()
2708 struct uart_port *port = platform_get_drvdata(pdev); in atmel_serial_suspend() local
2709 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_suspend()
2711 if (uart_console(port) && console_suspend_enabled) { in atmel_serial_suspend()
2713 while (!(atmel_uart_readl(port, ATMEL_US_CSR) & in atmel_serial_suspend()
2718 if (uart_console(port) && !console_suspend_enabled) { in atmel_serial_suspend()
2722 atmel_port->cache.mr = atmel_uart_readl(port, ATMEL_US_MR); in atmel_serial_suspend()
2723 atmel_port->cache.imr = atmel_uart_readl(port, ATMEL_US_IMR); in atmel_serial_suspend()
2724 atmel_port->cache.brgr = atmel_uart_readl(port, ATMEL_US_BRGR); in atmel_serial_suspend()
2725 atmel_port->cache.rtor = atmel_uart_readl(port, in atmel_serial_suspend()
2727 atmel_port->cache.ttgr = atmel_uart_readl(port, ATMEL_US_TTGR); in atmel_serial_suspend()
2728 atmel_port->cache.fmr = atmel_uart_readl(port, ATMEL_US_FMR); in atmel_serial_suspend()
2729 atmel_port->cache.fimr = atmel_uart_readl(port, ATMEL_US_FIMR); in atmel_serial_suspend()
2743 uart_suspend_port(&atmel_uart, port); in atmel_serial_suspend()
2750 struct uart_port *port = platform_get_drvdata(pdev); in atmel_serial_resume() local
2751 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_resume()
2754 if (uart_console(port) && !console_suspend_enabled) { in atmel_serial_resume()
2755 atmel_uart_writel(port, ATMEL_US_MR, atmel_port->cache.mr); in atmel_serial_resume()
2756 atmel_uart_writel(port, ATMEL_US_IER, atmel_port->cache.imr); in atmel_serial_resume()
2757 atmel_uart_writel(port, ATMEL_US_BRGR, atmel_port->cache.brgr); in atmel_serial_resume()
2758 atmel_uart_writel(port, atmel_port->rtor, in atmel_serial_resume()
2760 atmel_uart_writel(port, ATMEL_US_TTGR, atmel_port->cache.ttgr); in atmel_serial_resume()
2763 atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_FIFOEN | in atmel_serial_resume()
2765 atmel_uart_writel(port, ATMEL_US_FMR, in atmel_serial_resume()
2767 atmel_uart_writel(port, ATMEL_US_FIER, in atmel_serial_resume()
2770 atmel_start_rx(port); in atmel_serial_resume()
2775 atmel_handle_receive(port, atmel_port->pending); in atmel_serial_resume()
2776 atmel_handle_status(port, atmel_port->pending, in atmel_serial_resume()
2778 atmel_handle_transmit(port, atmel_port->pending); in atmel_serial_resume()
2784 uart_resume_port(&atmel_uart, port); in atmel_serial_resume()
2857 /* port id not found in platform data nor device-tree aliases: in atmel_serial_probe()
2867 /* port already in use */ in atmel_serial_probe()
2935 * Get port name of usart or uart in atmel_serial_probe()
2940 * The peripheral clock can now safely be disabled till the port in atmel_serial_probe()
2968 * port in the normal case.
2972 struct uart_port *port = platform_get_drvdata(pdev); in atmel_serial_remove() local
2973 struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); in atmel_serial_remove()
2981 ret = uart_remove_one_port(&atmel_uart, port); in atmel_serial_remove()
2985 /* "port" is allocated statically, so we shouldn't free it */ in atmel_serial_remove()
2987 clear_bit(port->line, atmel_ports_in_use); in atmel_serial_remove()