diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-11-03 14:51:13 +0000 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-13 19:59:48 -0800 |
commit | 9f25bc510e960c551dc295c2d1d60e3da334590c (patch) | |
tree | 0249992316d87891b184710d236bfbd71c985b43 /drivers/tty | |
parent | 7fe9a5a9d91f0e9ac65c723665bbdf899c3a4a24 (diff) |
tty: amba-pl011: prepare REG_* register indexes
Prepare for REG_* register accessors. This change involves introducing
pl011_reg_to_offset() to convert REG_* to the hardware register offset,
and converting all call sites to use REG_* names. We need to fix up
locations where we check for equivalence of register offsets as well.
Much of this change was made via these sed expressions:
s/ST_UART01[1x]\(_[^_]*\|_LCRH_[TR]X\)\>/REG_ST\1/
s/UART01[1x]_\(DR\|RSR\|ECR\|FR\|ILPR\|[IF]BRD\|LCRH\|CR\|IFLS\|IMSC\|RIS\|MIS\|ICR\|DMACR\)\>/REG_\1/g
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r-- | drivers/tty/serial/amba-pl011.c | 205 | ||||
-rw-r--r-- | drivers/tty/serial/amba-pl011.h | 32 |
2 files changed, 140 insertions, 97 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index c9ae0a144f10..62b9cb275402 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -60,6 +60,8 @@ #include <linux/io.h> #include <linux/acpi.h> +#include "amba-pl011.h" + #define UART_NR 14 #define SERIAL_AMBA_MAJOR 204 @@ -92,8 +94,8 @@ static unsigned int get_fifosize_arm(struct amba_device *dev) static struct vendor_data vendor_arm = { .ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8, - .lcrh_tx = UART011_LCRH, - .lcrh_rx = UART011_LCRH, + .lcrh_tx = REG_LCRH, + .lcrh_rx = REG_LCRH, .oversampling = false, .dma_threshold = false, .cts_event_workaround = false, @@ -117,8 +119,8 @@ static unsigned int get_fifosize_st(struct amba_device *dev) static struct vendor_data vendor_st = { .ifls = UART011_IFLS_RX_HALF|UART011_IFLS_TX_HALF, - .lcrh_tx = ST_UART011_LCRH_TX, - .lcrh_rx = ST_UART011_LCRH_RX, + .lcrh_tx = REG_ST_LCRH_TX, + .lcrh_rx = REG_ST_LCRH_RX, .oversampling = true, .dma_threshold = true, .cts_event_workaround = true, @@ -184,16 +186,22 @@ struct uart_amba_port { #endif }; +static unsigned int pl011_reg_to_offset(const struct uart_amba_port *uap, + unsigned int reg) +{ + return reg; +} + static unsigned int pl011_read(const struct uart_amba_port *uap, unsigned int reg) { - return readw(uap->port.membase + reg); + return readw(uap->port.membase + pl011_reg_to_offset(uap, reg)); } static void pl011_write(unsigned int val, const struct uart_amba_port *uap, unsigned int reg) { - writew(val, uap->port.membase + reg); + writew(val, uap->port.membase + pl011_reg_to_offset(uap, reg)); } /* @@ -208,12 +216,12 @@ static int pl011_fifo_to_tty(struct uart_amba_port *uap) int fifotaken = 0; while (max_count--) { - status = pl011_read(uap, UART01x_FR); + status = pl011_read(uap, REG_FR); if (status & UART01x_FR_RXFE) break; /* Take chars from the FIFO and update status */ - ch = pl011_read(uap, UART01x_DR) | UART_DUMMY_DR_RX; + ch = pl011_read(uap, REG_DR) | UART_DUMMY_DR_RX; flag = TTY_NORMAL; uap->port.icount.rx++; fifotaken++; @@ -295,7 +303,8 @@ static void pl011_dma_probe(struct uart_amba_port *uap) struct amba_pl011_data *plat = dev_get_platdata(uap->port.dev); struct device *dev = uap->port.dev; struct dma_slave_config tx_conf = { - .dst_addr = uap->port.mapbase + UART01x_DR, + .dst_addr = uap->port.mapbase + + pl011_reg_to_offset(uap, REG_DR), .dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE, .direction = DMA_MEM_TO_DEV, .dst_maxburst = uap->fifosize >> 1, @@ -350,7 +359,8 @@ static void pl011_dma_probe(struct uart_amba_port *uap) if (chan) { struct dma_slave_config rx_conf = { - .src_addr = uap->port.mapbase + UART01x_DR, + .src_addr = uap->port.mapbase + + pl011_reg_to_offset(uap, REG_DR), .src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE, .direction = DMA_DEV_TO_MEM, .src_maxburst = uap->fifosize >> 2, @@ -449,7 +459,7 @@ static void pl011_dma_tx_callback(void *data) dmacr = uap->dmacr; uap->dmacr = dmacr & ~UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); /* * If TX DMA was disabled, it means that we've stopped the DMA for @@ -563,7 +573,7 @@ static int pl011_dma_tx_refill(struct uart_amba_port *uap) dma_dev->device_issue_pending(chan); uap->dmacr |= UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); uap->dmatx.queued = true; /* @@ -599,9 +609,9 @@ static bool pl011_dma_tx_irq(struct uart_amba_port *uap) */ if (uap->dmatx.queued) { uap->dmacr |= UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); uap->im &= ~UART011_TXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); return true; } @@ -611,7 +621,7 @@ static bool pl011_dma_tx_irq(struct uart_amba_port *uap) */ if (pl011_dma_tx_refill(uap) > 0) { uap->im &= ~UART011_TXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); return true; } return false; @@ -625,7 +635,7 @@ static inline void pl011_dma_tx_stop(struct uart_amba_port *uap) { if (uap->dmatx.queued) { uap->dmacr &= ~UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); } } @@ -651,12 +661,12 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap) if (!uap->dmatx.queued) { if (pl011_dma_tx_refill(uap) > 0) { uap->im &= ~UART011_TXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); } else ret = false; } else if (!(uap->dmacr & UART011_TXDMAE)) { uap->dmacr |= UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); } return ret; } @@ -667,9 +677,9 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap) */ dmacr = uap->dmacr; uap->dmacr &= ~UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); - if (pl011_read(uap, UART01x_FR) & UART01x_FR_TXFF) { + if (pl011_read(uap, REG_FR) & UART01x_FR_TXFF) { /* * No space in the FIFO, so enable the transmit interrupt * so we know when there is space. Note that once we've @@ -678,13 +688,13 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap) return false; } - pl011_write(uap->port.x_char, uap, UART01x_DR); + pl011_write(uap->port.x_char, uap, REG_DR); uap->port.icount.tx++; uap->port.x_char = 0; /* Success - restore the DMA state */ uap->dmacr = dmacr; - pl011_write(dmacr, uap, UART011_DMACR); + pl011_write(dmacr, uap, REG_DMACR); return true; } @@ -712,7 +722,7 @@ __acquires(&uap->port.lock) DMA_TO_DEVICE); uap->dmatx.queued = false; uap->dmacr &= ~UART011_TXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); } } @@ -752,11 +762,11 @@ static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap) dma_async_issue_pending(rxchan); uap->dmacr |= UART011_RXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); uap->dmarx.running = true; uap->im &= ~UART011_RXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); return 0; } @@ -815,7 +825,7 @@ static void pl011_dma_rx_chars(struct uart_amba_port *uap, if (dma_count == pending && readfifo) { /* Clear any error flags */ pl011_write(UART011_OEIS | UART011_BEIS | UART011_PEIS | - UART011_FEIS, uap, UART011_ICR); + UART011_FEIS, uap, REG_ICR); /* * If we read all the DMA'd characters, and we had an @@ -863,7 +873,7 @@ static void pl011_dma_rx_irq(struct uart_amba_port *uap) /* Disable RX DMA - incoming data will wait in the FIFO */ uap->dmacr &= ~UART011_RXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); uap->dmarx.running = false; pending = sgbuf->sg.length - state.residue; @@ -883,7 +893,7 @@ static void pl011_dma_rx_irq(struct uart_amba_port *uap) dev_dbg(uap->port.dev, "could not retrigger RX DMA job " "fall back to interrupt mode\n"); uap->im |= UART011_RXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); } } @@ -931,7 +941,7 @@ static void pl011_dma_rx_callback(void *data) dev_dbg(uap->port.dev, "could not retrigger RX DMA job " "fall back to interrupt mode\n"); uap->im |= UART011_RXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); } } @@ -944,7 +954,7 @@ static inline void pl011_dma_rx_stop(struct uart_amba_port *uap) { /* FIXME. Just disable the DMA enable */ uap->dmacr &= ~UART011_RXDMAE; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); } /* @@ -988,7 +998,7 @@ static void pl011_dma_rx_poll(unsigned long args) spin_lock_irqsave(&uap->port.lock, flags); pl011_dma_rx_stop(uap); uap->im |= UART011_RXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); spin_unlock_irqrestore(&uap->port.lock, flags); uap->dmarx.running = false; @@ -1050,7 +1060,7 @@ static void pl011_dma_startup(struct uart_amba_port *uap) skip_rx: /* Turn on DMA error (RX/TX will be enabled on demand) */ uap->dmacr |= UART011_DMAONERR; - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); /* * ST Micro variants has some specific dma burst threshold @@ -1059,7 +1069,7 @@ skip_rx: */ if (uap->vendor->dma_threshold) pl011_write(ST_UART011_DMAWM_RX_16 | ST_UART011_DMAWM_TX_16, - uap, ST_UART011_DMAWM); + uap, REG_ST_DMAWM); if (uap->using_rx_dma) { if (pl011_dma_rx_trigger_dma(uap)) @@ -1084,12 +1094,12 @@ static void pl011_dma_shutdown(struct uart_amba_port *uap) return; /* Disable RX and TX DMA */ - while (pl011_read(uap, UART01x_FR) & UART01x_FR_BUSY) + while (pl011_read(uap, REG_FR) & UART01x_FR_BUSY) barrier(); spin_lock_irq(&uap->port.lock); uap->dmacr &= ~(UART011_DMAONERR | UART011_RXDMAE | UART011_TXDMAE); - pl011_write(uap->dmacr, uap, UART011_DMACR); + pl011_write(uap->dmacr, uap, REG_DMACR); spin_unlock_irq(&uap->port.lock); if (uap->using_tx_dma) { @@ -1190,7 +1200,7 @@ static void pl011_stop_tx(struct uart_port *port) container_of(port, struct uart_amba_port, port); uap->im &= ~UART011_TXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); pl011_dma_tx_stop(uap); } @@ -1200,7 +1210,7 @@ static void pl011_tx_chars(struct uart_amba_port *uap, bool from_irq); static void pl011_start_tx_pio(struct uart_amba_port *uap) { uap->im |= UART011_TXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); pl011_tx_chars(uap, false); } @@ -1220,7 +1230,7 @@ static void pl011_stop_rx(struct uart_port *port) uap->im &= ~(UART011_RXIM|UART011_RTIM|UART011_FEIM| UART011_PEIM|UART011_BEIM|UART011_OEIM); - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); pl011_dma_rx_stop(uap); } @@ -1231,7 +1241,7 @@ static void pl011_enable_ms(struct uart_port *port) container_of(port, struct uart_amba_port, port); uap->im |= UART011_RIMIM|UART011_CTSMIM|UART011_DCDMIM|UART011_DSRMIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); } static void pl011_rx_chars(struct uart_amba_port *uap) @@ -1251,7 +1261,7 @@ __acquires(&uap->port.lock) dev_dbg(uap->port.dev, "could not trigger RX DMA job " "fall back to interrupt mode again\n"); uap->im |= UART011_RXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); } else { #ifdef CONFIG_DMA_ENGINE /* Start Rx DMA poll */ @@ -1272,10 +1282,10 @@ static bool pl011_tx_char(struct uart_amba_port *uap, unsigned char c, bool from_irq) { if (unlikely(!from_irq) && - pl011_read(uap, UART01x_FR) & UART01x_FR_TXFF) + pl011_read(uap, REG_FR) & UART01x_FR_TXFF) return false; /* unable to transmit character */ - pl011_write(c, uap, UART01x_DR); + pl011_write(c, uap, REG_DR); uap->port.icount.tx++; return true; @@ -1322,7 +1332,7 @@ static void pl011_modem_status(struct uart_amba_port *uap) { unsigned int status, delta; - status = pl011_read(uap, UART01x_FR) & UART01x_FR_MODEM_ANY; + status = pl011_read(uap, REG_FR) & UART01x_FR_MODEM_ANY; delta = status ^ uap->old_status; uap->old_status = status; @@ -1350,15 +1360,15 @@ static void check_apply_cts_event_workaround(struct uart_amba_port *uap) return; /* workaround to make sure that all bits are unlocked.. */ - pl011_write(0x00, uap, UART011_ICR); + pl011_write(0x00, uap, REG_ICR); /* * WA: introduce 26ns(1 uart clk) delay before W1C; * single apb access will incur 2 pclk(133.12Mhz) delay, * so add 2 dummy reads */ - dummy_read = pl011_read(uap, UART011_ICR); - dummy_read = pl011_read(uap, UART011_ICR); + dummy_read = pl011_read(uap, REG_ICR); + dummy_read = pl011_read(uap, REG_ICR); } static irqreturn_t pl011_int(int irq, void *dev_id) @@ -1370,15 +1380,15 @@ static irqreturn_t pl011_int(int irq, void *dev_id) int handled = 0; spin_lock_irqsave(&uap->port.lock, flags); - imsc = pl011_read(uap, UART011_IMSC); - status = pl011_read(uap, UART011_RIS) & imsc; + imsc = pl011_read(uap, REG_IMSC); + status = pl011_read(uap, REG_RIS) & imsc; if (status) { do { check_apply_cts_event_workaround(uap); pl011_write(status & ~(UART011_TXIS|UART011_RTIS| UART011_RXIS), - uap, UART011_ICR); + uap, REG_ICR); if (status & (UART011_RTIS|UART011_RXIS)) { if (pl011_dma_rx_running(uap)) @@ -1395,7 +1405,7 @@ static irqreturn_t pl011_int(int irq, void *dev_id) if (pass_counter-- == 0) break; - status = pl011_read(uap, UART011_RIS) & imsc; + status = pl011_read(uap, REG_RIS) & imsc; } while (status != 0); handled = 1; } @@ -1409,7 +1419,7 @@ static unsigned int pl011_tx_empty(struct uart_port *port) { struct uart_amba_port *uap = container_of(port, struct uart_amba_port, port); - unsigned int status = pl011_read(uap, UART01x_FR); + unsigned int status = pl011_read(uap, REG_FR); return status & (UART01x_FR_BUSY|UART01x_FR_TXFF) ? 0 : TIOCSER_TEMT; } @@ -1418,7 +1428,7 @@ static unsigned int pl011_get_mctrl(struct uart_port *port) struct uart_amba_port *uap = container_of(port, struct uart_amba_port, port); unsigned int result = 0; - unsigned int status = pl011_read(uap, UART01x_FR); + unsigned int status = pl011_read(uap, REG_FR); #define TIOCMBIT(uartbit, tiocmbit) \ if (status & uartbit) \ @@ -1438,7 +1448,7 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl) container_of(port, struct uart_amba_port, port); unsigned int cr; - cr = pl011_read(uap, UART011_CR); + cr = pl011_read(uap, REG_CR); #define TIOCMBIT(tiocmbit, uartbit) \ if (mctrl & tiocmbit) \ @@ -1458,7 +1468,7 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl) } #undef TIOCMBIT - pl011_write(cr, uap, UART011_CR); + pl011_write(cr, uap, REG_CR); } static void pl011_break_ctl(struct uart_port *port, int break_state) @@ -1485,7 +1495,7 @@ static void pl011_quiesce_irqs(struct uart_port *port) struct uart_amba_port *uap = container_of(port, struct uart_amba_port, port); - pl011_write(pl011_read(uap, UART011_MIS), uap, UART011_ICR); + pl011_write(pl011_read(uap, REG_MIS), uap, REG_ICR); /* * There is no way to clear TXIM as this is "ready to transmit IRQ", so * we simply mask it. start_tx() will unmask it. @@ -1499,8 +1509,8 @@ static void pl011_quiesce_irqs(struct uart_port *port) * (including tx queue), so we're also fine with start_tx()'s caller * side. */ - pl011_write(pl011_read(uap, UART011_IMSC) & ~UART011_TXIM, uap, - UART011_IMSC); + pl011_write(pl011_read(uap, REG_IMSC) & ~UART011_TXIM, uap, + REG_IMSC); } static int pl011_get_poll_char(struct uart_port *port) @@ -1515,11 +1525,11 @@ static int pl011_get_poll_char(struct uart_port *port) */ pl011_quiesce_irqs(port); - status = pl011_read(uap, UART01x_FR); + status = pl011_read(uap, REG_FR); if (status & UART01x_FR_RXFE) return NO_POLL_CHAR; - return pl011_read(uap, UART01x_DR); + return pl011_read(uap, REG_DR); } static void pl011_put_poll_char(struct uart_port *port, @@ -1528,10 +1538,10 @@ static void pl011_put_poll_char(struct uart_port *port, struct uart_amba_port *uap = container_of(port, struct uart_amba_port, port); - while (pl011_read(uap, UART01x_FR) & UART01x_FR_TXFF) + while (pl011_read(uap, REG_FR) & UART01x_FR_TXFF) barrier(); - pl011_write(ch, uap, UART01x_DR); + pl011_write(ch, uap, REG_DR); } #endif /* CONFIG_CONSOLE_POLL */ @@ -1557,14 +1567,14 @@ static int pl011_hwinit(struct uart_port *port) /* Clear pending error and receive interrupts */ pl011_write(UART011_OEIS | UART011_BEIS | UART011_PEIS | UART011_FEIS | UART011_RTIS | UART011_RXIS, - uap, UART011_ICR); + uap, REG_ICR); /* * Save interrupts enable mask, and enable RX interrupts in case if * the interrupt is used for NMI entry. */ - uap->im = pl011_read(uap, UART011_IMSC); - pl011_write(UART011_RTIM | UART011_RXIM, uap, UART011_IMSC); + uap->im = pl011_read(uap, REG_IMSC); + pl011_write(UART011_RTIM | UART011_RXIM, uap, REG_IMSC); if (dev_get_platdata(uap->port.dev)) { struct amba_pl011_data *plat; @@ -1578,7 +1588,8 @@ static int pl011_hwinit(struct uart_port *port) static bool pl011_split_lcrh(const struct uart_amba_port *uap) { - return uap->lcrh_rx != uap->lcrh_tx; + return pl011_reg_to_offset(uap, uap->lcrh_rx) != + pl011_reg_to_offset(uap, uap->lcrh_tx); } static void pl011_write_lcr_h(struct uart_amba_port *uap, unsigned int lcr_h) @@ -1591,14 +1602,14 @@ static void pl011_write_lcr_h(struct uart_amba_port *uap, unsigned int lcr_h) * to get this delay write read only register 10 times */ for (i = 0; i < 10; ++i) - pl011_write(0xff, uap, UART011_MIS); + pl011_write(0xff, uap, REG_MIS); pl011_write(lcr_h, uap, uap->lcrh_tx); } } static int pl011_allocate_irq(struct uart_amba_port *uap) { - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); return request_irq(uap->port.irq, pl011_int, 0, "uart-pl011", uap); } @@ -1613,11 +1624,11 @@ static void pl011_enable_interrupts(struct uart_amba_port *uap) spin_lock_irq(&uap->port.lock); /* Clear out any spuriously appearing RX interrupts */ - pl011_write(UART011_RTIS | UART011_RXIS, uap, UART011_ICR); + pl011_write(UART011_RTIS | UART011_RXIS, uap, REG_ICR); uap->im = UART011_RTIM; if (!pl011_dma_rx_running(uap)) uap->im |= UART011_RXIM; - pl011_write(uap->im, uap, UART011_IMSC); + pl011_write(uap->im, uap, REG_IMSC); spin_unlock_irq(&uap->port.lock); } @@ -1636,21 +1647,21 @@ static int pl011_startup(struct uart_port *port) if (retval) goto clk_dis; - pl011_write(uap->vendor->ifls, uap, UART011_IFLS); + pl011_write(uap->vendor->ifls, uap, REG_IFLS); spin_lock_irq(&uap->port.lock); /* restore RTS and DTR */ cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR); cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE; - pl011_write(cr, uap, UART011_CR); + pl011_write(cr, uap, REG_CR); spin_unlock_irq(&uap->port.lock); /* * initialise the old status of the modem signals */ - uap->old_status = pl011_read(uap, UART01x_FR) & UART01x_FR_MODEM_ANY; + uap->old_status = pl011_read(uap, REG_FR) & UART01x_FR_MODEM_ANY; /* Startup DMA */ pl011_dma_startup(uap); @@ -1707,11 +1718,11 @@ static void pl011_disable_uart(struct uart_amba_port *uap) uap->autorts = false; spin_lock_irq(&uap->port.lock); - cr = pl011_read(uap, UART011_CR); + cr = pl011_read(uap, REG_CR); uap->old_cr = cr; cr &= UART011_CR_RTS | UART011_CR_DTR; cr |= UART01x_CR_UARTEN | UART011_CR_TXE; - pl011_write(cr, uap, UART011_CR); + pl011_write(cr, uap, REG_CR); spin_unlock_irq(&uap->port.lock); /* @@ -1728,8 +1739,8 @@ static void pl011_disable_interrupts(struct uart_amba_port *uap) /* mask all interrupts and clear all pending ones */ uap->im = 0; - pl011_write(uap->im, uap, UART011_IMSC); - pl011_write(0xffff, uap, UART011_ICR); + pl011_write(uap->im, uap, REG_IMSC); + pl011_write(0xffff, uap, REG_ICR); spin_unlock_irq(&uap->port.lock); } @@ -1881,8 +1892,8 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios, pl011_enable_ms(port); /* first, disable everything */ - old_cr = pl011_read(uap, UART011_CR); - pl011_write(0, uap, UART011_CR); + old_cr = pl011_read(uap, REG_CR); + pl011_write(0, uap, REG_CR); if (termios->c_cflag & CRTSCTS) { if (old_cr & UART011_CR_RTS) @@ -1915,17 +1926,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios, quot -= 2; } /* Set baud rate */ - pl011_write(quot & 0x3f, uap, UART011_FBRD); - pl011_write(quot >> 6, uap, UART011_IBRD); + pl011_write(quot & 0x3f, uap, REG_FBRD); + pl011_write(quot >> 6, uap, REG_IBRD); /* * ----------v----------v----------v----------v----- * NOTE: lcrh_tx and lcrh_rx MUST BE WRITTEN AFTER - * UART011_FBRD & UART011_IBRD. + * REG_FBRD & REG_IBRD. * ----------^----------^----------^----------^----- */ pl011_write_lcr_h(uap, lcr_h); - pl011_write(old_cr, uap, UART011_CR); + pl011_write(old_cr, uap, REG_CR); spin_unlock_irqrestore(&port->lock, flags); } @@ -2066,9 +2077,9 @@ static void pl011_console_putchar(struct uart_port *port, int ch) struct uart_amba_port *uap = container_of(port, struct uart_amba_port, port); - while (pl011_read(uap, UART01x_FR) & UART01x_FR_TXFF) + while (pl011_read(uap, REG_FR) & UART01x_FR_TXFF) barrier(); - pl011_write(ch, uap, UART01x_DR); + pl011_write(ch, uap, REG_DR); } static void @@ -2093,10 +2104,10 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) * First save the CR then disable the interrupts */ if (!uap->vendor->always_enabled) { - old_cr = pl011_read(uap, UART011_CR); + old_cr = pl011_read(uap, REG_CR); new_cr = old_cr & ~UART011_CR_CTSEN; new_cr |= UART01x_CR_UARTEN | UART011_CR_TXE; - pl011_write(new_cr, uap, UART011_CR); + pl011_write(new_cr, uap, REG_CR); } uart_console_write(&uap->port, s, count, pl011_console_putchar); @@ -2106,10 +2117,10 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) * and restore the TCR */ do { - status = pl011_read(uap, UART01x_FR); + status = pl011_read(uap, REG_FR); } while (status & UART01x_FR_BUSY); if (!uap->vendor->always_enabled) - pl011_write(old_cr, uap, UART011_CR); + pl011_write(old_cr, uap, REG_CR); if (locked) spin_unlock(&uap->port.lock); @@ -2122,7 +2133,7 @@ static void __init pl011_console_get_options(struct uart_amba_port *uap, int *baud, int *parity, int *bits) { - if (pl011_read(uap, UART011_CR) & UART01x_CR_UARTEN) { + if (pl011_read(uap, REG_CR) & UART01x_CR_UARTEN) { unsigned int lcr_h, ibrd, fbrd; lcr_h = pl011_read(uap, uap->lcrh_tx); @@ -2140,13 +2151,13 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud, else *bits = 8; - ibrd = pl011_read(uap, UART011_IBRD); - fbrd = pl011_read(uap, UART011_FBRD); + ibrd = pl011_read(uap, REG_IBRD); + fbrd = pl011_read(uap, REG_FBRD); *baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd); if (uap->vendor->oversampling) { - if (pl011_read(uap, UART011_CR) + if (pl011_read(uap, REG_CR) & ST_UART011_CR_OVSFACT) *baud *= 2; } @@ -2218,10 +2229,10 @@ static struct console amba_console = { static void pl011_putc(struct uart_port *port, int c) { - while (readl(port->membase + UART01x_FR) & UART01x_FR_TXFF) + while (readl(port->membase + REG_FR) & UART01x_FR_TXFF) ; - writeb(c, port->membase + UART01x_DR); - while (readl(port->membase + UART01x_FR) & UART01x_FR_BUSY) + writeb(c, port->membase + REG_DR); + while (readl(port->membase + REG_FR) & UART01x_FR_BUSY) ; } @@ -2348,8 +2359,8 @@ static int pl011_register_port(struct uart_amba_port *uap) int ret; /* Ensure interrupts from this UART are masked and cleared */ - pl011_write(0, uap, UART011_IMSC); - pl011_write(0xffff, uap, UART011_ICR); + pl011_write(0, uap, REG_IMSC); + pl011_write(0xffff, uap, REG_ICR); if (!amba_reg.state) { ret = uart_register_driver(&amba_reg); diff --git a/drivers/tty/serial/amba-pl011.h b/drivers/tty/serial/amba-pl011.h new file mode 100644 index 000000000000..b7eb1bc2fab9 --- /dev/null +++ b/drivers/tty/serial/amba-pl011.h @@ -0,0 +1,32 @@ +#ifndef AMBA_PL011_H +#define AMBA_PL011_H + +enum { + REG_DR = UART01x_DR, + REG_ST_DMAWM = ST_UART011_DMAWM, + REG_ST_TIMEOUT = ST_UART011_TIMEOUT, + REG_FR = UART01x_FR, + REG_ST_LCRH_RX = ST_UART011_LCRH_RX, + REG_IBRD = UART011_IBRD, + REG_FBRD = UART011_FBRD, + REG_LCRH = UART011_LCRH, + REG_ST_LCRH_TX = ST_UART011_LCRH_TX, + REG_CR = UART011_CR, + REG_IFLS = UART011_IFLS, + REG_IMSC = UART011_IMSC, + REG_RIS = UART011_RIS, + REG_MIS = UART011_MIS, + REG_ICR = UART011_ICR, + REG_DMACR = UART011_DMACR, + REG_ST_XFCR = ST_UART011_XFCR, + REG_ST_XON1 = ST_UART011_XON1, + REG_ST_XON2 = ST_UART011_XON2, + REG_ST_XOFF1 = ST_UART011_XOFF1, + REG_ST_XOFF2 = ST_UART011_XOFF2, + REG_ST_ITCR = ST_UART011_ITCR, + REG_ST_ITIP = ST_UART011_ITIP, + REG_ST_ABCR = ST_UART011_ABCR, + REG_ST_ABIMSC = ST_UART011_ABIMSC, +}; + +#endif |