openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Russell King 2015-11-03 14:51:13 +00:00 committed by Greg Kroah-Hartman
parent 7fe9a5a9d9
commit 9f25bc510e
2 changed files with 140 additions and 97 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

205
drivers/tty/serial/amba-pl011.c
View File

@ -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 @@ static void pl011_dma_startup(struct uart_amba_port *uap)
*/
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);

32
drivers/tty/serial/amba-pl011.h Normal file
View File

@ -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