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Commit ebe13983 authored by Cyrille Pitchen's avatar Cyrille Pitchen Committed by Sasha Levin
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tty/serial: at91: remove bunch of macros to access UART registers 

[ Upstream commit 4e7decda ]

This patch replaces the UART_PUT_*, resp. UART_GET_*, macros by
atmel_uart_writel(), resp. atmel_uart_readl(), inline function calls.
Signed-off-by: default avatarCyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 343c4efc
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Showing with 159 additions and 154 deletions
drivers/tty/serial/atmel_serial.c
View file @ ebe13983
......@@ -88,37 +88,6 @@ static void atmel_stop_rx(struct uart_port *port);
#define ATMEL_ISR_PASS_LIMIT 256
/* UART registers. CR is write-only, hence no GET macro */
#define UART_PUT_CR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_CR)
#define UART_GET_MR(port) __raw_readl((port)->membase + ATMEL_US_MR)
#define UART_PUT_MR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_MR)
#define UART_PUT_IER(port,v) __raw_writel(v, (port)->membase + ATMEL_US_IER)
#define UART_PUT_IDR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_IDR)
#define UART_GET_IMR(port) __raw_readl((port)->membase + ATMEL_US_IMR)
#define UART_GET_CSR(port) __raw_readl((port)->membase + ATMEL_US_CSR)
#define UART_GET_CHAR(port) __raw_readl((port)->membase + ATMEL_US_RHR)
#define UART_PUT_CHAR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_THR)
#define UART_GET_BRGR(port) __raw_readl((port)->membase + ATMEL_US_BRGR)
#define UART_PUT_BRGR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_BRGR)
#define UART_PUT_RTOR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_RTOR)
#define UART_PUT_TTGR(port, v) __raw_writel(v, (port)->membase + ATMEL_US_TTGR)
#define UART_GET_IP_NAME(port) __raw_readl((port)->membase + ATMEL_US_NAME)
#define UART_GET_IP_VERSION(port) __raw_readl((port)->membase + ATMEL_US_VERSION)
/* PDC registers */
#define UART_PUT_PTCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_PTCR)
#define UART_GET_PTSR(port) __raw_readl((port)->membase + ATMEL_PDC_PTSR)
#define UART_PUT_RPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RPR)
#define UART_GET_RPR(port) __raw_readl((port)->membase + ATMEL_PDC_RPR)
#define UART_PUT_RCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RCR)
#define UART_PUT_RNPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RNPR)
#define UART_PUT_RNCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RNCR)
#define UART_PUT_TPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TPR)
#define UART_PUT_TCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TCR)
#define UART_GET_TCR(port) __raw_readl((port)->membase + ATMEL_PDC_TCR)
struct atmel_dma_buffer {
unsigned char *buf;
dma_addr_t dma_addr;
......@@ -211,6 +180,16 @@ to_atmel_uart_port(struct uart_port *uart)
return container_of(uart, struct atmel_uart_port, uart);
}
static inline u32 atmel_uart_readl(struct uart_port *port, u32 reg)
{
return __raw_readl(port->membase + reg);
}
static inline void atmel_uart_writel(struct uart_port *port, u32 reg, u32 value)
{
__raw_writel(value, port->membase + reg);
}
#ifdef CONFIG_SERIAL_ATMEL_PDC
static bool atmel_use_pdc_rx(struct uart_port *port)
{
......@@ -256,7 +235,7 @@ static unsigned int atmel_get_lines_status(struct uart_port *port)
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
unsigned int status, ret = 0;
status = UART_GET_CSR(port);
status = atmel_uart_readl(port, ATMEL_US_CSR);
mctrl_gpio_get(atmel_port->gpios, &ret);
......@@ -303,9 +282,9 @@ static int atmel_config_rs485(struct uart_port *port,
unsigned int mode;
/* Disable interrupts */
UART_PUT_IDR(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask);
mode = UART_GET_MR(port);
mode = atmel_uart_readl(port, ATMEL_US_MR);
/* Resetting serial mode to RS232 (0x0) */
mode &= ~ATMEL_US_USMODE;
......@@ -315,7 +294,8 @@ static int atmel_config_rs485(struct uart_port *port,
if (rs485conf->flags & SER_RS485_ENABLED) {
dev_dbg(port->dev, "Setting UART to RS485\n");
atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
atmel_uart_writel(port, ATMEL_US_TTGR,
rs485conf->delay_rts_after_send);
mode |= ATMEL_US_USMODE_RS485;
} else {
dev_dbg(port->dev, "Setting UART to RS232\n");
......@@ -325,10 +305,10 @@ static int atmel_config_rs485(struct uart_port *port,
else
atmel_port->tx_done_mask = ATMEL_US_TXRDY;
}
UART_PUT_MR(port, mode);
atmel_uart_writel(port, ATMEL_US_MR, mode);
/* Enable interrupts */
UART_PUT_IER(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask);
return 0;
}
......@@ -338,7 +318,9 @@ static int atmel_config_rs485(struct uart_port *port,
*/
static u_int atmel_tx_empty(struct uart_port *port)
{
return (UART_GET_CSR(port) & ATMEL_US_TXEMPTY) ? TIOCSER_TEMT : 0;
return (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXEMPTY) ?
TIOCSER_TEMT :
0;
}
/*
......@@ -347,13 +329,14 @@ static u_int atmel_tx_empty(struct uart_port *port)
static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
{
unsigned int control = 0;
unsigned int mode = UART_GET_MR(port);
unsigned int mode = atmel_uart_readl(port, ATMEL_US_MR);
unsigned int rts_paused, rts_ready;
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
/* override mode to RS485 if needed, otherwise keep the current mode */
if (port->rs485.flags & SER_RS485_ENABLED) {
UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
atmel_uart_writel(port, ATMEL_US_TTGR,
port->rs485.delay_rts_after_send);
mode &= ~ATMEL_US_USMODE;
mode |= ATMEL_US_USMODE_RS485;
}
......@@ -383,7 +366,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
else
control |= ATMEL_US_DTRDIS;
UART_PUT_CR(port, control);
atmel_uart_writel(port, ATMEL_US_CR, control);
mctrl_gpio_set(atmel_port->gpios, mctrl);
......@@ -394,7 +377,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
else
mode |= ATMEL_US_CHMODE_NORMAL;
UART_PUT_MR(port, mode);
atmel_uart_writel(port, ATMEL_US_MR, mode);
}
/*
......@@ -405,7 +388,7 @@ static u_int atmel_get_mctrl(struct uart_port *port)
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
unsigned int ret = 0, status;
status = UART_GET_CSR(port);
status = atmel_uart_readl(port, ATMEL_US_CSR);
/*
* The control signals are active low.
......@@ -431,10 +414,10 @@ static void atmel_stop_tx(struct uart_port *port)
if (atmel_use_pdc_tx(port)) {
/* disable PDC transmit */
UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS);
}
/* Disable interrupts */
UART_PUT_IDR(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask);
if ((port->rs485.flags & SER_RS485_ENABLED) &&
!(port->rs485.flags & SER_RS485_RX_DURING_TX))
......@@ -449,7 +432,7 @@ static void atmel_start_tx(struct uart_port *port)
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
if (atmel_use_pdc_tx(port)) {
if (UART_GET_PTSR(port) & ATMEL_PDC_TXTEN)
if (atmel_uart_readl(port, ATMEL_PDC_PTSR) & ATMEL_PDC_TXTEN)
/* The transmitter is already running. Yes, we
really need this.*/
return;
......@@ -459,10 +442,10 @@ static void atmel_start_tx(struct uart_port *port)
atmel_stop_rx(port);
/* re-enable PDC transmit */
UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
}
/* Enable interrupts */
UART_PUT_IER(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask);
}
/*
......@@ -470,17 +453,19 @@ static void atmel_start_tx(struct uart_port *port)
*/
static void atmel_start_rx(struct uart_port *port)
{
UART_PUT_CR(port, ATMEL_US_RSTSTA); /* reset status and receiver */
/* reset status and receiver */
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
UART_PUT_CR(port, ATMEL_US_RXEN);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXEN);
if (atmel_use_pdc_rx(port)) {
/* enable PDC controller */
UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
atmel_uart_writel(port, ATMEL_US_IER,
ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
port->read_status_mask);
UART_PUT_PTCR(port, ATMEL_PDC_RXTEN);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
} else {
UART_PUT_IER(port, ATMEL_US_RXRDY);
atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY);
}
}
......@@ -489,15 +474,16 @@ static void atmel_start_rx(struct uart_port *port)
*/
static void atmel_stop_rx(struct uart_port *port)
{
UART_PUT_CR(port, ATMEL_US_RXDIS);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXDIS);
if (atmel_use_pdc_rx(port)) {
/* disable PDC receive */
UART_PUT_PTCR(port, ATMEL_PDC_RXTDIS);
UART_PUT_IDR(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS);
atmel_uart_writel(port, ATMEL_US_IDR,
ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
port->read_status_mask);
} else {
UART_PUT_IDR(port, ATMEL_US_RXRDY);
atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXRDY);
}
}
......@@ -537,7 +523,7 @@ static void atmel_enable_ms(struct uart_port *port)
else
ier |= ATMEL_US_DCDIC;
UART_PUT_IER(port, ier);
atmel_uart_writel(port, ATMEL_US_IER, ier);
}
/*
......@@ -576,7 +562,7 @@ static void atmel_disable_ms(struct uart_port *port)
else
idr |= ATMEL_US_DCDIC;
UART_PUT_IDR(port, idr);
atmel_uart_writel(port, ATMEL_US_IDR, idr);
}
/*
......@@ -585,9 +571,11 @@ static void atmel_disable_ms(struct uart_port *port)
static void atmel_break_ctl(struct uart_port *port, int break_state)
{
if (break_state != 0)
UART_PUT_CR(port, ATMEL_US_STTBRK); /* start break */
/* start break */
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTBRK);
else
UART_PUT_CR(port, ATMEL_US_STPBRK); /* stop break */
/* stop break */
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STPBRK);
}
/*
......@@ -621,7 +609,7 @@ atmel_buffer_rx_char(struct uart_port *port, unsigned int status,
static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status)
{
/* clear error */
UART_PUT_CR(port, ATMEL_US_RSTSTA);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
if (status & ATMEL_US_RXBRK) {
/* ignore side-effect */
......@@ -644,9 +632,9 @@ static void atmel_rx_chars(struct uart_port *port)
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
unsigned int status, ch;
status = UART_GET_CSR(port);
status = atmel_uart_readl(port, ATMEL_US_CSR);
while (status & ATMEL_US_RXRDY) {
ch = UART_GET_CHAR(port);
ch = atmel_uart_readl(port, ATMEL_US_RHR);
/*
* note that the error handling code is
......@@ -657,12 +645,13 @@ static void atmel_rx_chars(struct uart_port *port)
|| atmel_port->break_active)) {
/* clear error */
UART_PUT_CR(port, ATMEL_US_RSTSTA);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
if (status & ATMEL_US_RXBRK
&& !atmel_port->break_active) {
atmel_port->break_active = 1;
UART_PUT_IER(port, ATMEL_US_RXBRK);
atmel_uart_writel(port, ATMEL_US_IER,
ATMEL_US_RXBRK);
} else {
/*
* This is either the end-of-break
......@@ -671,14 +660,15 @@ static void atmel_rx_chars(struct uart_port *port)
* being set. In both cases, the next
* RXBRK will indicate start-of-break.
*/
UART_PUT_IDR(port, ATMEL_US_RXBRK);
atmel_uart_writel(port, ATMEL_US_IDR,
ATMEL_US_RXBRK);
status &= ~ATMEL_US_RXBRK;
atmel_port->break_active = 0;
}
}
atmel_buffer_rx_char(port, status, ch);
status = UART_GET_CSR(port);
status = atmel_uart_readl(port, ATMEL_US_CSR);
}
tasklet_schedule(&atmel_port->tasklet);
......@@ -693,16 +683,18 @@ static void atmel_tx_chars(struct uart_port *port)
struct circ_buf *xmit = &port->state->xmit;
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
if (port->x_char && UART_GET_CSR(port) & atmel_port->tx_done_mask) {
UART_PUT_CHAR(port, port->x_char);
if (port->x_char &&
(atmel_uart_readl(port, ATMEL_US_CSR) & atmel_port->tx_done_mask)) {
atmel_uart_writel(port, ATMEL_US_THR, port->x_char);
port->icount.tx++;
port->x_char = 0;
}
if (uart_circ_empty(xmit) || uart_tx_stopped(port))
return;
while (UART_GET_CSR(port) & atmel_port->tx_done_mask) {
UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
while (atmel_uart_readl(port, ATMEL_US_CSR) &
atmel_port->tx_done_mask) {
atmel_uart_writel(port, ATMEL_US_THR, xmit->buf[xmit->tail]);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
if (uart_circ_empty(xmit))
......@@ -714,7 +706,8 @@ static void atmel_tx_chars(struct uart_port *port)
if (!uart_circ_empty(xmit))
/* Enable interrupts */
UART_PUT_IER(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IER,
atmel_port->tx_done_mask);
}
static void atmel_complete_tx_dma(void *arg)
......@@ -934,14 +927,14 @@ static void atmel_rx_from_dma(struct uart_port *port)
/* Reset the UART timeout early so that we don't miss one */
UART_PUT_CR(port, ATMEL_US_STTTO);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
dmastat = dmaengine_tx_status(chan,
atmel_port->cookie_rx,
&state);
/* Restart a new tasklet if DMA status is error */
if (dmastat == DMA_ERROR) {
dev_dbg(port->dev, "Get residue error, restart tasklet\n");
UART_PUT_IER(port, ATMEL_US_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT);
tasklet_schedule(&atmel_port->tasklet);
return;
}
......@@ -1007,7 +1000,7 @@ static void atmel_rx_from_dma(struct uart_port *port)
tty_flip_buffer_push(tport);
spin_lock(&port->lock);
UART_PUT_IER(port, ATMEL_US_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT);
}
static int atmel_prepare_rx_dma(struct uart_port *port)
......@@ -1117,8 +1110,8 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending)
* the moment.
*/
if (pending & (ATMEL_US_ENDRX | ATMEL_US_TIMEOUT)) {
UART_PUT_IDR(port, (ATMEL_US_ENDRX
| ATMEL_US_TIMEOUT));
atmel_uart_writel(port, ATMEL_US_IDR,
(ATMEL_US_ENDRX | ATMEL_US_TIMEOUT));
tasklet_schedule(&atmel_port->tasklet);
}
......@@ -1129,7 +1122,8 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending)
if (atmel_use_dma_rx(port)) {
if (pending & ATMEL_US_TIMEOUT) {
UART_PUT_IDR(port, ATMEL_US_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_IDR,
ATMEL_US_TIMEOUT);
tasklet_schedule(&atmel_port->tasklet);
}
}
......@@ -1142,8 +1136,8 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending)
* End of break detected. If it came along with a
* character, atmel_rx_chars will handle it.
*/
UART_PUT_CR(port, ATMEL_US_RSTSTA);
UART_PUT_IDR(port, ATMEL_US_RXBRK);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXBRK);
atmel_port->break_active = 0;
}
}
......@@ -1158,7 +1152,8 @@ atmel_handle_transmit(struct uart_port *port, unsigned int pending)
if (pending & atmel_port->tx_done_mask) {
/* Either PDC or interrupt transmission */
UART_PUT_IDR(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IDR,
atmel_port->tx_done_mask);
tasklet_schedule(&atmel_port->tasklet);
}
}
......@@ -1193,7 +1188,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id)
do {
status = atmel_get_lines_status(port);
mask = UART_GET_IMR(port);
mask = atmel_uart_readl(port, ATMEL_US_IMR);
pending = status & mask;
if (!gpio_handled) {
/*
......@@ -1219,7 +1214,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id)
if (atmel_port->suspended) {
atmel_port->pending |= pending;
atmel_port->pending_status = status;
UART_PUT_IDR(port, mask);
atmel_uart_writel(port, ATMEL_US_IDR, mask);
pm_system_wakeup();
break;
}
......@@ -1256,7 +1251,7 @@ static void atmel_tx_pdc(struct uart_port *port)
int count;
/* nothing left to transmit? */
if (UART_GET_TCR(port))
if (atmel_uart_readl(port, ATMEL_PDC_TCR))
return;
xmit->tail += pdc->ofs;
......@@ -1268,7 +1263,7 @@ static void atmel_tx_pdc(struct uart_port *port)
/* more to transmit - setup next transfer */
/* disable PDC transmit */
UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS);
if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {
dma_sync_single_for_device(port->dev,
......@@ -1279,12 +1274,14 @@ static void atmel_tx_pdc(struct uart_port *port)
count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
pdc->ofs = count;
UART_PUT_TPR(port, pdc->dma_addr + xmit->tail);
UART_PUT_TCR(port, count);
atmel_uart_writel(port, ATMEL_PDC_TPR,
pdc->dma_addr + xmit->tail);
atmel_uart_writel(port, ATMEL_PDC_TCR, count);
/* re-enable PDC transmit */
UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
/* Enable interrupts */
UART_PUT_IER(port, atmel_port->tx_done_mask);
atmel_uart_writel(port, ATMEL_US_IER,
atmel_port->tx_done_mask);
} else {
if ((port->rs485.flags & SER_RS485_ENABLED) &&
!(port->rs485.flags & SER_RS485_RX_DURING_TX)) {
......@@ -1410,10 +1407,10 @@ static void atmel_rx_from_pdc(struct uart_port *port)
do {
/* Reset the UART timeout early so that we don't miss one */
UART_PUT_CR(port, ATMEL_US_STTTO);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
pdc = &atmel_port->pdc_rx[rx_idx];
head = UART_GET_RPR(port) - pdc->dma_addr;
head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr;
tail = pdc->ofs;
/* If the PDC has switched buffers, RPR won't contain
......@@ -1456,8 +1453,8 @@ static void atmel_rx_from_pdc(struct uart_port *port)
*/
if (head >= pdc->dma_size) {
pdc->ofs = 0;
UART_PUT_RNPR(port, pdc->dma_addr);
UART_PUT_RNCR(port, pdc->dma_size);
atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr);
atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size);
rx_idx = !rx_idx;
atmel_port->pdc_rx_idx = rx_idx;
......@@ -1472,7 +1469,8 @@ static void atmel_rx_from_pdc(struct uart_port *port)
tty_flip_buffer_push(tport);
spin_lock(&port->lock);
UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_IER,
ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
}
static int atmel_prepare_rx_pdc(struct uart_port *port)
......@@ -1505,11 +1503,12 @@ static int atmel_prepare_rx_pdc(struct uart_port *port)
atmel_port->pdc_rx_idx = 0;
UART_PUT_RPR(port, atmel_port->pdc_rx[0].dma_addr);
UART_PUT_RCR(port, PDC_BUFFER_SIZE);
atmel_uart_writel(port, ATMEL_PDC_RPR, atmel_port->pdc_rx[0].dma_addr);
atmel_uart_writel(port, ATMEL_PDC_RCR, PDC_BUFFER_SIZE);
UART_PUT_RNPR(port, atmel_port->pdc_rx[1].dma_addr);
UART_PUT_RNCR(port, PDC_BUFFER_SIZE);
atmel_uart_writel(port, ATMEL_PDC_RNPR,
atmel_port->pdc_rx[1].dma_addr);
atmel_uart_writel(port, ATMEL_PDC_RNCR, PDC_BUFFER_SIZE);
return 0;
}
......@@ -1666,7 +1665,7 @@ static void atmel_set_ops(struct uart_port *port)
static void atmel_get_ip_name(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
int name = UART_GET_IP_NAME(port);
int name = atmel_uart_readl(port, ATMEL_US_NAME);
u32 version;
int usart, uart;
/* usart and uart ascii */
......@@ -1683,7 +1682,7 @@ static void atmel_get_ip_name(struct uart_port *port)
atmel_port->is_usart = false;
} else {
/* fallback for older SoCs: use version field */
version = UART_GET_IP_VERSION(port);
version = atmel_uart_readl(port, ATMEL_US_VERSION);
switch (version) {
case 0x302:
case 0x10213:
......@@ -1755,7 +1754,7 @@ static int atmel_startup(struct uart_port *port)
* request_irq() is called we could get stuck trying to
* handle an unexpected interrupt
*/
UART_PUT_IDR(port, -1);
atmel_uart_writel(port, ATMEL_US_IDR, -1);
atmel_port->ms_irq_enabled = false;
/*
......@@ -1803,9 +1802,9 @@ static int atmel_startup(struct uart_port *port)
/*
* Finally, enable the serial port
*/
UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
/* enable xmit & rcvr */
UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN);
setup_timer(&atmel_port->uart_timer,
atmel_uart_timer_callback,
......@@ -1818,13 +1817,14 @@ static int atmel_startup(struct uart_port *port)
jiffies + uart_poll_timeout(port));
/* set USART timeout */
} else {
UART_PUT_RTOR(port, PDC_RX_TIMEOUT);
UART_PUT_CR(port, ATMEL_US_STTTO);
atmel_uart_writel(port, ATMEL_US_RTOR, PDC_RX_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_IER,
ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
}
/* enable PDC controller */
UART_PUT_PTCR(port, ATMEL_PDC_RXTEN);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
} else if (atmel_use_dma_rx(port)) {
/* set UART timeout */
if (!atmel_port->is_usart) {
......@@ -1832,14 +1832,15 @@ static int atmel_startup(struct uart_port *port)
jiffies + uart_poll_timeout(port));
/* set USART timeout */
} else {
UART_PUT_RTOR(port, PDC_RX_TIMEOUT);
UART_PUT_CR(port, ATMEL_US_STTTO);
atmel_uart_writel(port, ATMEL_US_RTOR, PDC_RX_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
UART_PUT_IER(port, ATMEL_US_TIMEOUT);
atmel_uart_writel(port, ATMEL_US_IER,
ATMEL_US_TIMEOUT);
}
} else {
/* enable receive only */
UART_PUT_IER(port, ATMEL_US_RXRDY);
atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY);
}
return 0;
......@@ -1859,7 +1860,7 @@ static void atmel_flush_buffer(struct uart_port *port)
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
if (atmel_use_pdc_tx(port)) {
UART_PUT_TCR(port, 0);
atmel_uart_writel(port, ATMEL_PDC_TCR, 0);
atmel_port->pdc_tx.ofs = 0;
}
}
......@@ -1891,8 +1892,8 @@ static void atmel_shutdown(struct uart_port *port)
atmel_stop_rx(port);
atmel_stop_tx(port);
UART_PUT_CR(port, ATMEL_US_RSTSTA);
UART_PUT_IDR(port, -1);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
atmel_uart_writel(port, ATMEL_US_IDR, -1);
/*
......@@ -1937,12 +1938,12 @@ static void atmel_serial_pm(struct uart_port *port, unsigned int state,
clk_prepare_enable(atmel_port->clk);
/* re-enable interrupts if we disabled some on suspend */
UART_PUT_IER(port, atmel_port->backup_imr);
atmel_uart_writel(port, ATMEL_US_IER, atmel_port->backup_imr);
break;
case 3:
/* Back up the interrupt mask and disable all interrupts */
atmel_port->backup_imr = UART_GET_IMR(port);
UART_PUT_IDR(port, -1);
atmel_port->backup_imr = atmel_uart_readl(port, ATMEL_US_IMR);
atmel_uart_writel(port, ATMEL_US_IDR, -1);
/*
* Disable the peripheral clock for this serial port.
......@@ -1965,7 +1966,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
unsigned int old_mode, mode, imr, quot, baud;
/* save the current mode register */
mode = old_mode = UART_GET_MR(port);
mode = old_mode = atmel_uart_readl(port, ATMEL_US_MR);
/* reset the mode, clock divisor, parity, stop bits and data size */
mode &= ~(ATMEL_US_USCLKS | ATMEL_US_CHRL | ATMEL_US_NBSTOP |
......@@ -2024,7 +2025,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
if (atmel_use_pdc_rx(port))
/* need to enable error interrupts */
UART_PUT_IER(port, port->read_status_mask);
atmel_uart_writel(port, ATMEL_US_IER, port->read_status_mask);
/*
* Characters to ignore
......@@ -2051,15 +2052,16 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
* transmitter is empty if requested by the caller, so there's
* no need to wait for it here.
*/
imr = UART_GET_IMR(port);
UART_PUT_IDR(port, -1);
imr = atmel_uart_readl(port, ATMEL_US_IMR);
atmel_uart_writel(port, ATMEL_US_IDR, -1);
/* disable receiver and transmitter */
UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
/* mode */
if (port->rs485.flags & SER_RS485_ENABLED) {
UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
atmel_uart_writel(port, ATMEL_US_TTGR,
port->rs485.delay_rts_after_send);
mode |= ATMEL_US_USMODE_RS485;
} else if (termios->c_cflag & CRTSCTS) {
/* RS232 with hardware handshake (RTS/CTS) */
......@@ -2070,7 +2072,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
}
/* set the mode, clock divisor, parity, stop bits and data size */
UART_PUT_MR(port, mode);
atmel_uart_writel(port, ATMEL_US_MR, mode);
/*
* when switching the mode, set the RTS line state according to the
......@@ -2087,16 +2089,16 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
rts_state = ATMEL_US_RTSEN;
}
UART_PUT_CR(port, rts_state);
atmel_uart_writel(port, ATMEL_US_CR, rts_state);
}
/* set the baud rate */
UART_PUT_BRGR(port, quot);
UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
atmel_uart_writel(port, ATMEL_US_BRGR, quot);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN);
/* restore interrupts */
UART_PUT_IER(port, imr);
atmel_uart_writel(port, ATMEL_US_IER, imr);
/* CTS flow-control and modem-status interrupts */
if (UART_ENABLE_MS(port, termios->c_cflag))
......@@ -2207,18 +2209,18 @@ static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser)
#ifdef CONFIG_CONSOLE_POLL
static int atmel_poll_get_char(struct uart_port *port)
{
while (!(UART_GET_CSR(port) & ATMEL_US_RXRDY))
while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_RXRDY))
cpu_relax();
return UART_GET_CHAR(port);
return atmel_uart_readl(port, ATMEL_US_RHR);
}
static void atmel_poll_put_char(struct uart_port *port, unsigned char ch)
{
while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY))
while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY))
cpu_relax();
UART_PUT_CHAR(port, ch);
atmel_uart_writel(port, ATMEL_US_THR, ch);
}
#endif
......@@ -2323,9 +2325,9 @@ struct platform_device *atmel_default_console_device; /* the serial console devi
#ifdef CONFIG_SERIAL_ATMEL_CONSOLE
static void atmel_console_putchar(struct uart_port *port, int ch)
{
while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY))
while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY))
cpu_relax();
UART_PUT_CHAR(port, ch);
atmel_uart_writel(port, ATMEL_US_THR, ch);
}
/*
......@@ -2341,12 +2343,13 @@ static void atmel_console_write(struct console *co, const char *s, u_int count)
/*
* First, save IMR and then disable interrupts
*/
imr = UART_GET_IMR(port);
UART_PUT_IDR(port, ATMEL_US_RXRDY | atmel_port->tx_done_mask);
imr = atmel_uart_readl(port, ATMEL_US_IMR);
atmel_uart_writel(port, ATMEL_US_IDR,
ATMEL_US_RXRDY | atmel_port->tx_done_mask);
/* Store PDC transmit status and disable it */
pdc_tx = UART_GET_PTSR(port) & ATMEL_PDC_TXTEN;
UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
pdc_tx = atmel_uart_readl(port, ATMEL_PDC_PTSR) & ATMEL_PDC_TXTEN;
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS);
uart_console_write(port, s, count, atmel_console_putchar);
......@@ -2355,15 +2358,15 @@ static void atmel_console_write(struct console *co, const char *s, u_int count)
* and restore IMR
*/
do {
status = UART_GET_CSR(port);
status = atmel_uart_readl(port, ATMEL_US_CSR);
} while (!(status & ATMEL_US_TXRDY));
/* Restore PDC transmit status */
if (pdc_tx)
UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
/* set interrupts back the way they were */
UART_PUT_IER(port, imr);
atmel_uart_writel(port, ATMEL_US_IER, imr);
}
/*
......@@ -2379,17 +2382,17 @@ static void __init atmel_console_get_options(struct uart_port *port, int *baud,
* If the baud rate generator isn't running, the port wasn't
* initialized by the boot loader.
*/
quot = UART_GET_BRGR(port) & ATMEL_US_CD;
quot = atmel_uart_readl(port, ATMEL_US_BRGR) & ATMEL_US_CD;
if (!quot)
return;
mr = UART_GET_MR(port) & ATMEL_US_CHRL;
mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_CHRL;
if (mr == ATMEL_US_CHRL_8)
*bits = 8;
else
*bits = 7;
mr = UART_GET_MR(port) & ATMEL_US_PAR;
mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_PAR;
if (mr == ATMEL_US_PAR_EVEN)
*parity = 'e';
else if (mr == ATMEL_US_PAR_ODD)
......@@ -2422,9 +2425,9 @@ static int __init atmel_console_setup(struct console *co, char *options)
if (ret)
return ret;
UART_PUT_IDR(port, -1);
UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
atmel_uart_writel(port, ATMEL_US_IDR, -1);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN);
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
......@@ -2531,7 +2534,8 @@ static int atmel_serial_suspend(struct platform_device *pdev,
if (atmel_is_console_port(port) && console_suspend_enabled) {
/* Drain the TX shifter */
while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
while (!(atmel_uart_readl(port, ATMEL_US_CSR) &
ATMEL_US_TXEMPTY))
cpu_relax();
}
......@@ -2683,8 +2687,9 @@ static int atmel_serial_probe(struct platform_device *pdev)
clk_prepare_enable(port->clk);
if (rs485_enabled) {
UART_PUT_MR(&port->uart, ATMEL_US_USMODE_NORMAL);
UART_PUT_CR(&port->uart, ATMEL_US_RTSEN);
atmel_uart_writel(&port->uart, ATMEL_US_MR,
ATMEL_US_USMODE_NORMAL);
atmel_uart_writel(&port->uart, ATMEL_US_CR, ATMEL_US_RTSEN);
}
/*
......
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