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path: root/drivers/tty/serial/amba-pl011.c
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Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
-rw-r--r--drivers/tty/serial/amba-pl011.c207
1 files changed, 114 insertions, 93 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index fd27e986b1dd..ee57e2bee9a1 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -85,6 +85,25 @@ struct vendor_data {
unsigned int (*get_fifosize)(struct amba_device *dev);
};
+enum reg_idx {
+ REG_DR = UART01x_DR,
+ REG_RSR = UART01x_RSR,
+ REG_ST_DMAWM = ST_UART011_DMAWM,
+ REG_FR = UART01x_FR,
+ REG_ST_LCRH_RX = ST_UART011_LCRH_RX,
+ REG_ILPR = UART01x_ILPR,
+ REG_IBRD = UART011_IBRD,
+ REG_FBRD = UART011_FBRD,
+ REG_LCRH = UART011_LCRH,
+ 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,
+};
+
static unsigned int get_fifosize_arm(struct amba_device *dev)
{
return amba_rev(dev) < 3 ? 16 : 32;
@@ -92,8 +111,8 @@ 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 +136,8 @@ 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_LCRH,
+ .lcrh_rx = REG_ST_LCRH_RX,
.oversampling = true,
.dma_threshold = true,
.cts_event_workaround = true,
@@ -196,12 +215,12 @@ static int pl011_fifo_to_tty(struct uart_amba_port *uap)
int fifotaken = 0;
while (max_count--) {
- status = readw(uap->port.membase + UART01x_FR);
+ status = readw(uap->port.membase + REG_FR);
if (status & UART01x_FR_RXFE)
break;
/* Take chars from the FIFO and update status */
- ch = readw(uap->port.membase + UART01x_DR) |
+ ch = readw(uap->port.membase + REG_DR) |
UART_DUMMY_DR_RX;
flag = TTY_NORMAL;
uap->port.icount.rx++;
@@ -284,7 +303,7 @@ 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 + REG_DR,
.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
.direction = DMA_MEM_TO_DEV,
.dst_maxburst = uap->fifosize >> 1,
@@ -339,7 +358,7 @@ 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 + REG_DR,
.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
.direction = DMA_DEV_TO_MEM,
.src_maxburst = uap->fifosize >> 2,
@@ -438,7 +457,7 @@ static void pl011_dma_tx_callback(void *data)
dmacr = uap->dmacr;
uap->dmacr = dmacr & ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
/*
* If TX DMA was disabled, it means that we've stopped the DMA for
@@ -552,7 +571,7 @@ static int pl011_dma_tx_refill(struct uart_amba_port *uap)
dma_dev->device_issue_pending(chan);
uap->dmacr |= UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
uap->dmatx.queued = true;
/*
@@ -588,9 +607,9 @@ static bool pl011_dma_tx_irq(struct uart_amba_port *uap)
*/
if (uap->dmatx.queued) {
uap->dmacr |= UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
return true;
}
@@ -600,7 +619,7 @@ static bool pl011_dma_tx_irq(struct uart_amba_port *uap)
*/
if (pl011_dma_tx_refill(uap) > 0) {
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
return true;
}
return false;
@@ -614,7 +633,7 @@ static inline void pl011_dma_tx_stop(struct uart_amba_port *uap)
{
if (uap->dmatx.queued) {
uap->dmacr &= ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
}
}
@@ -641,13 +660,13 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap)
if (pl011_dma_tx_refill(uap) > 0) {
uap->im &= ~UART011_TXIM;
writew(uap->im, uap->port.membase +
- UART011_IMSC);
+ REG_IMSC);
} else
ret = false;
} else if (!(uap->dmacr & UART011_TXDMAE)) {
uap->dmacr |= UART011_TXDMAE;
writew(uap->dmacr,
- uap->port.membase + UART011_DMACR);
+ uap->port.membase + REG_DMACR);
}
return ret;
}
@@ -658,9 +677,9 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap)
*/
dmacr = uap->dmacr;
uap->dmacr &= ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
- if (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF) {
+ if (readw(uap->port.membase + 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
@@ -669,13 +688,13 @@ static inline bool pl011_dma_tx_start(struct uart_amba_port *uap)
return false;
}
- writew(uap->port.x_char, uap->port.membase + UART01x_DR);
+ writew(uap->port.x_char, uap->port.membase + REG_DR);
uap->port.icount.tx++;
uap->port.x_char = 0;
/* Success - restore the DMA state */
uap->dmacr = dmacr;
- writew(dmacr, uap->port.membase + UART011_DMACR);
+ writew(dmacr, uap->port.membase + REG_DMACR);
return true;
}
@@ -703,7 +722,7 @@ __acquires(&uap->port.lock)
DMA_TO_DEVICE);
uap->dmatx.queued = false;
uap->dmacr &= ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
}
}
@@ -743,11 +762,11 @@ static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap)
dma_async_issue_pending(rxchan);
uap->dmacr |= UART011_RXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
uap->dmarx.running = true;
uap->im &= ~UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
return 0;
}
@@ -806,7 +825,7 @@ static void pl011_dma_rx_chars(struct uart_amba_port *uap,
if (dma_count == pending && readfifo) {
/* Clear any error flags */
writew(UART011_OEIS | UART011_BEIS | UART011_PEIS | UART011_FEIS,
- uap->port.membase + UART011_ICR);
+ uap->port.membase + REG_ICR);
/*
* If we read all the DMA'd characters, and we had an
@@ -854,7 +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;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
uap->dmarx.running = false;
pending = sgbuf->sg.length - state.residue;
@@ -874,7 +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;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
}
}
@@ -922,7 +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;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
}
}
@@ -935,7 +954,7 @@ static inline void pl011_dma_rx_stop(struct uart_amba_port *uap)
{
/* FIXME. Just disable the DMA enable */
uap->dmacr &= ~UART011_RXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
}
/*
@@ -979,7 +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;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
spin_unlock_irqrestore(&uap->port.lock, flags);
uap->dmarx.running = false;
@@ -1041,7 +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;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
/*
* ST Micro variants has some specific dma burst threshold
@@ -1050,7 +1069,8 @@ skip_rx:
*/
if (uap->vendor->dma_threshold)
writew(ST_UART011_DMAWM_RX_16 | ST_UART011_DMAWM_TX_16,
- uap->port.membase + ST_UART011_DMAWM);
+ uap->port.membase + REG_ST_DMAWM);
+
if (uap->using_rx_dma) {
if (pl011_dma_rx_trigger_dma(uap))
@@ -1075,12 +1095,12 @@ static void pl011_dma_shutdown(struct uart_amba_port *uap)
return;
/* Disable RX and TX DMA */
- while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
+ while (readw(uap->port.membase + REG_FR) & UART01x_FR_BUSY)
barrier();
spin_lock_irq(&uap->port.lock);
uap->dmacr &= ~(UART011_DMAONERR | UART011_RXDMAE | UART011_TXDMAE);
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ writew(uap->dmacr, uap->port.membase + REG_DMACR);
spin_unlock_irq(&uap->port.lock);
if (uap->using_tx_dma) {
@@ -1181,7 +1201,7 @@ static void pl011_stop_tx(struct uart_port *port)
container_of(port, struct uart_amba_port, port);
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
pl011_dma_tx_stop(uap);
}
@@ -1191,7 +1211,7 @@ 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;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
pl011_tx_chars(uap, false);
}
@@ -1211,7 +1231,7 @@ static void pl011_stop_rx(struct uart_port *port)
uap->im &= ~(UART011_RXIM|UART011_RTIM|UART011_FEIM|
UART011_PEIM|UART011_BEIM|UART011_OEIM);
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
pl011_dma_rx_stop(uap);
}
@@ -1222,7 +1242,7 @@ 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;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
}
static void pl011_rx_chars(struct uart_amba_port *uap)
@@ -1242,7 +1262,7 @@ __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;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
} else {
#ifdef CONFIG_DMA_ENGINE
/* Start Rx DMA poll */
@@ -1263,10 +1283,10 @@ static bool pl011_tx_char(struct uart_amba_port *uap, unsigned char c,
bool from_irq)
{
if (unlikely(!from_irq) &&
- readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF)
+ readw(uap->port.membase + REG_FR) & UART01x_FR_TXFF)
return false; /* unable to transmit character */
- writew(c, uap->port.membase + UART01x_DR);
+ writew(c, uap->port.membase + REG_DR);
uap->port.icount.tx++;
return true;
@@ -1313,7 +1333,7 @@ static void pl011_modem_status(struct uart_amba_port *uap)
{
unsigned int status, delta;
- status = readw(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ status = readw(uap->port.membase + REG_FR) & UART01x_FR_MODEM_ANY;
delta = status ^ uap->old_status;
uap->old_status = status;
@@ -1341,15 +1361,15 @@ static void check_apply_cts_event_workaround(struct uart_amba_port *uap)
return;
/* workaround to make sure that all bits are unlocked.. */
- writew(0x00, uap->port.membase + UART011_ICR);
+ writew(0x00, uap->port.membase + 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 = readw(uap->port.membase + UART011_ICR);
- dummy_read = readw(uap->port.membase + UART011_ICR);
+ dummy_read = readw(uap->port.membase + REG_ICR);
+ dummy_read = readw(uap->port.membase + REG_ICR);
}
static irqreturn_t pl011_int(int irq, void *dev_id)
@@ -1361,15 +1381,15 @@ static irqreturn_t pl011_int(int irq, void *dev_id)
int handled = 0;
spin_lock_irqsave(&uap->port.lock, flags);
- imsc = readw(uap->port.membase + UART011_IMSC);
- status = readw(uap->port.membase + UART011_RIS) & imsc;
+ imsc = readw(uap->port.membase + REG_IMSC);
+ status = readw(uap->port.membase + REG_RIS) & imsc;
if (status) {
do {
check_apply_cts_event_workaround(uap);
writew(status & ~(UART011_TXIS|UART011_RTIS|
UART011_RXIS),
- uap->port.membase + UART011_ICR);
+ uap->port.membase + REG_ICR);
if (status & (UART011_RTIS|UART011_RXIS)) {
if (pl011_dma_rx_running(uap))
@@ -1386,7 +1406,7 @@ static irqreturn_t pl011_int(int irq, void *dev_id)
if (pass_counter-- == 0)
break;
- status = readw(uap->port.membase + UART011_RIS) & imsc;
+ status = readw(uap->port.membase + REG_RIS) & imsc;
} while (status != 0);
handled = 1;
}
@@ -1400,7 +1420,7 @@ 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 = readw(uap->port.membase + UART01x_FR);
+ unsigned int status = readw(uap->port.membase + REG_FR);
return status & (UART01x_FR_BUSY|UART01x_FR_TXFF) ? 0 : TIOCSER_TEMT;
}
@@ -1409,7 +1429,7 @@ 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 = readw(uap->port.membase + UART01x_FR);
+ unsigned int status = readw(uap->port.membase + REG_FR);
#define TIOCMBIT(uartbit, tiocmbit) \
if (status & uartbit) \
@@ -1429,7 +1449,7 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl)
container_of(port, struct uart_amba_port, port);
unsigned int cr;
- cr = readw(uap->port.membase + UART011_CR);
+ cr = readw(uap->port.membase + REG_CR);
#define TIOCMBIT(tiocmbit, uartbit) \
if (mctrl & tiocmbit) \
@@ -1449,7 +1469,7 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl)
}
#undef TIOCMBIT
- writew(cr, uap->port.membase + UART011_CR);
+ writew(cr, uap->port.membase + REG_CR);
}
static void pl011_break_ctl(struct uart_port *port, int break_state)
@@ -1477,7 +1497,7 @@ static void pl011_quiesce_irqs(struct uart_port *port)
container_of(port, struct uart_amba_port, port);
unsigned char __iomem *regs = uap->port.membase;
- writew(readw(regs + UART011_MIS), regs + UART011_ICR);
+ writew(readw(regs + REG_MIS), regs + 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.
@@ -1491,7 +1511,7 @@ static void pl011_quiesce_irqs(struct uart_port *port)
* (including tx queue), so we're also fine with start_tx()'s caller
* side.
*/
- writew(readw(regs + UART011_IMSC) & ~UART011_TXIM, regs + UART011_IMSC);
+ writew(readw(regs + REG_IMSC) & ~UART011_TXIM, regs + REG_IMSC);
}
static int pl011_get_poll_char(struct uart_port *port)
@@ -1506,11 +1526,11 @@ static int pl011_get_poll_char(struct uart_port *port)
*/
pl011_quiesce_irqs(port);
- status = readw(uap->port.membase + UART01x_FR);
+ status = readw(uap->port.membase + REG_FR);
if (status & UART01x_FR_RXFE)
return NO_POLL_CHAR;
- return readw(uap->port.membase + UART01x_DR);
+ return readw(uap->port.membase + REG_DR);
}
static void pl011_put_poll_char(struct uart_port *port,
@@ -1519,10 +1539,10 @@ static void pl011_put_poll_char(struct uart_port *port,
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
- while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF)
+ while (readw(uap->port.membase + REG_FR) & UART01x_FR_TXFF)
barrier();
- writew(ch, uap->port.membase + UART01x_DR);
+ writew(ch, uap->port.membase + REG_DR);
}
#endif /* CONFIG_CONSOLE_POLL */
@@ -1547,14 +1567,14 @@ static int pl011_hwinit(struct uart_port *port)
/* Clear pending error and receive interrupts */
writew(UART011_OEIS | UART011_BEIS | UART011_PEIS | UART011_FEIS |
- UART011_RTIS | UART011_RXIS, uap->port.membase + UART011_ICR);
+ UART011_RTIS | UART011_RXIS, uap->port.membase + REG_ICR);
/*
* Save interrupts enable mask, and enable RX interrupts in case if
* the interrupt is used for NMI entry.
*/
- uap->im = readw(uap->port.membase + UART011_IMSC);
- writew(UART011_RTIM | UART011_RXIM, uap->port.membase + UART011_IMSC);
+ uap->im = readw(uap->port.membase + REG_IMSC);
+ writew(UART011_RTIM | UART011_RXIM, uap->port.membase + REG_IMSC);
if (dev_get_platdata(uap->port.dev)) {
struct amba_pl011_data *plat;
@@ -1576,14 +1596,14 @@ 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)
- writew(0xff, uap->port.membase + UART011_MIS);
+ writew(0xff, uap->port.membase + REG_MIS);
writew(lcr_h, uap->port.membase + uap->lcrh_tx);
}
}
static int pl011_allocate_irq(struct uart_amba_port *uap)
{
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
return request_irq(uap->port.irq, pl011_int, 0, "uart-pl011", uap);
}
@@ -1599,11 +1619,11 @@ static void pl011_enable_interrupts(struct uart_amba_port *uap)
/* Clear out any spuriously appearing RX interrupts */
writew(UART011_RTIS | UART011_RXIS,
- uap->port.membase + UART011_ICR);
+ uap->port.membase + REG_ICR);
uap->im = UART011_RTIM;
if (!pl011_dma_rx_running(uap))
uap->im |= UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ writew(uap->im, uap->port.membase + REG_IMSC);
spin_unlock_irq(&uap->port.lock);
}
@@ -1622,21 +1642,22 @@ static int pl011_startup(struct uart_port *port)
if (retval)
goto clk_dis;
- writew(uap->vendor->ifls, uap->port.membase + UART011_IFLS);
+ writew(uap->vendor->ifls, uap->port.membase + 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;
- writew(cr, uap->port.membase + UART011_CR);
+ writew(cr, uap->port.membase + REG_CR);
spin_unlock_irq(&uap->port.lock);
/*
* initialise the old status of the modem signals
*/
- uap->old_status = readw(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ uap->old_status = readw(uap->port.membase + REG_FR) &
+ UART01x_FR_MODEM_ANY;
/* Startup DMA */
pl011_dma_startup(uap);
@@ -1693,11 +1714,11 @@ static void pl011_disable_uart(struct uart_amba_port *uap)
uap->autorts = false;
spin_lock_irq(&uap->port.lock);
- cr = readw(uap->port.membase + UART011_CR);
+ cr = readw(uap->port.membase + REG_CR);
uap->old_cr = cr;
cr &= UART011_CR_RTS | UART011_CR_DTR;
cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
- writew(cr, uap->port.membase + UART011_CR);
+ writew(cr, uap->port.membase + REG_CR);
spin_unlock_irq(&uap->port.lock);
/*
@@ -1714,8 +1735,8 @@ static void pl011_disable_interrupts(struct uart_amba_port *uap)
/* mask all interrupts and clear all pending ones */
uap->im = 0;
- writew(uap->im, uap->port.membase + UART011_IMSC);
- writew(0xffff, uap->port.membase + UART011_ICR);
+ writew(uap->im, uap->port.membase + REG_IMSC);
+ writew(0xffff, uap->port.membase + REG_ICR);
spin_unlock_irq(&uap->port.lock);
}
@@ -1867,8 +1888,8 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
pl011_enable_ms(port);
/* first, disable everything */
- old_cr = readw(port->membase + UART011_CR);
- writew(0, port->membase + UART011_CR);
+ old_cr = readw(port->membase + REG_CR);
+ writew(0, port->membase + REG_CR);
if (termios->c_cflag & CRTSCTS) {
if (old_cr & UART011_CR_RTS)
@@ -1901,17 +1922,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
quot -= 2;
}
/* Set baud rate */
- writew(quot & 0x3f, port->membase + UART011_FBRD);
- writew(quot >> 6, port->membase + UART011_IBRD);
+ writew(quot & 0x3f, port->membase + REG_FBRD);
+ writew(quot >> 6, port->membase + 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);
- writew(old_cr, port->membase + UART011_CR);
+ writew(old_cr, port->membase + REG_CR);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -2052,9 +2073,9 @@ 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 (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF)
+ while (readw(uap->port.membase + REG_FR) & UART01x_FR_TXFF)
barrier();
- writew(ch, uap->port.membase + UART01x_DR);
+ writew(ch, uap->port.membase + REG_DR);
}
static void
@@ -2079,10 +2100,10 @@ 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 = readw(uap->port.membase + UART011_CR);
+ old_cr = readw(uap->port.membase + REG_CR);
new_cr = old_cr & ~UART011_CR_CTSEN;
new_cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
- writew(new_cr, uap->port.membase + UART011_CR);
+ writew(new_cr, uap->port.membase + REG_CR);
}
uart_console_write(&uap->port, s, count, pl011_console_putchar);
@@ -2092,10 +2113,10 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
* and restore the TCR
*/
do {
- status = readw(uap->port.membase + UART01x_FR);
+ status = readw(uap->port.membase + REG_FR);
} while (status & UART01x_FR_BUSY);
if (!uap->vendor->always_enabled)
- writew(old_cr, uap->port.membase + UART011_CR);
+ writew(old_cr, uap->port.membase + REG_CR);
if (locked)
spin_unlock(&uap->port.lock);
@@ -2108,7 +2129,7 @@ static void __init
pl011_console_get_options(struct uart_amba_port *uap, int *baud,
int *parity, int *bits)
{
- if (readw(uap->port.membase + UART011_CR) & UART01x_CR_UARTEN) {
+ if (readw(uap->port.membase + REG_CR) & UART01x_CR_UARTEN) {
unsigned int lcr_h, ibrd, fbrd;
lcr_h = readw(uap->port.membase + uap->lcrh_tx);
@@ -2126,13 +2147,13 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud,
else
*bits = 8;
- ibrd = readw(uap->port.membase + UART011_IBRD);
- fbrd = readw(uap->port.membase + UART011_FBRD);
+ ibrd = readw(uap->port.membase + REG_IBRD);
+ fbrd = readw(uap->port.membase + REG_FBRD);
*baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd);
if (uap->vendor->oversampling) {
- if (readw(uap->port.membase + UART011_CR)
+ if (readw(uap->port.membase + REG_CR)
& ST_UART011_CR_OVSFACT)
*baud *= 2;
}
@@ -2204,10 +2225,10 @@ 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)
;
}
@@ -2334,8 +2355,8 @@ static int pl011_register_port(struct uart_amba_port *uap)
int ret;
/* Ensure interrupts from this UART are masked and cleared */
- writew(0, uap->port.membase + UART011_IMSC);
- writew(0xffff, uap->port.membase + UART011_ICR);
+ writew(0, uap->port.membase + REG_IMSC);
+ writew(0xffff, uap->port.membase + REG_ICR);
if (!amba_reg.state) {
ret = uart_register_driver(&amba_reg);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 10:48:48 +0300