iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

serial: lantiq: Change ltq_w32_mask to asc_update_bits

Browse Source 
ltq prefix is platform specific function, asc prefix
is more generic.

Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Songjun Wu 2018-10-16 17:19:05 +08:00 committed by Greg Kroah-Hartman
parent b871424f57
commit fccf231ae9
1 changed files with 20 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/tty/serial/lantiq.c
View File

@ -113,6 +113,13 @@ struct ltq_uart_port {
unsigned int err_irq;
};
static inline void asc_update_bits(u32 clear, u32 set, void __iomem *reg)
{
u32 tmp = readl(reg);
writel((tmp & ~clear) | set, reg);
}
static inline struct
ltq_uart_port *to_ltq_uart_port(struct uart_port *port)
{
@ -163,16 +170,16 @@ lqasc_rx_chars(struct uart_port *port)
if (rsr & ASCSTATE_ANY) {
if (rsr & ASCSTATE_PE) {
port->icount.parity++;
ltq_w32_mask(0, ASCWHBSTATE_CLRPE,
asc_update_bits(0, ASCWHBSTATE_CLRPE,
port->membase + LTQ_ASC_WHBSTATE);
} else if (rsr & ASCSTATE_FE) {
port->icount.frame++;
ltq_w32_mask(0, ASCWHBSTATE_CLRFE,
asc_update_bits(0, ASCWHBSTATE_CLRFE,
port->membase + LTQ_ASC_WHBSTATE);
}
if (rsr & ASCSTATE_ROE) {
port->icount.overrun++;
ltq_w32_mask(0, ASCWHBSTATE_CLRROE,
asc_update_bits(0, ASCWHBSTATE_CLRROE,
port->membase + LTQ_ASC_WHBSTATE);
}
@ -252,7 +259,7 @@ lqasc_err_int(int irq, void *_port)
struct uart_port *port = (struct uart_port *)_port;
spin_lock_irqsave(&ltq_asc_lock, flags);
/* clear any pending interrupts */
ltq_w32_mask(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE |
asc_update_bits(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE |
ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE);
spin_unlock_irqrestore(&ltq_asc_lock, flags);
return IRQ_HANDLED;
@ -304,7 +311,7 @@ lqasc_startup(struct uart_port *port)
clk_enable(ltq_port->clk);
port->uartclk = clk_get_rate(ltq_port->fpiclk);
ltq_w32_mask(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
asc_update_bits(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
port->membase + LTQ_ASC_CLC);
ltq_w32(0, port->membase + LTQ_ASC_PISEL);
@ -320,7 +327,7 @@ lqasc_startup(struct uart_port *port)
* setting enable bits
*/
wmb();
ltq_w32_mask(0, ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN |
asc_update_bits(0, ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN |
ASCCON_ROEN, port->membase + LTQ_ASC_CON);
retval = request_irq(ltq_port->tx_irq, lqasc_tx_int,
@ -364,9 +371,9 @@ lqasc_shutdown(struct uart_port *port)
free_irq(ltq_port->err_irq, port);
ltq_w32(0, port->membase + LTQ_ASC_CON);
ltq_w32_mask(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU,
asc_update_bits(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU,
port->membase + LTQ_ASC_RXFCON);
ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
asc_update_bits(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
port->membase + LTQ_ASC_TXFCON);
if (!IS_ERR(ltq_port->clk))
clk_disable(ltq_port->clk);
@ -438,7 +445,7 @@ lqasc_set_termios(struct uart_port *port,
spin_lock_irqsave(&ltq_asc_lock, flags);
/* set up CON */
ltq_w32_mask(0, con, port->membase + LTQ_ASC_CON);
asc_update_bits(0, con, port->membase + LTQ_ASC_CON);
/* Set baud rate - take a divider of 2 into account */
baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
@ -446,19 +453,19 @@ lqasc_set_termios(struct uart_port *port,
divisor = divisor / 2 - 1;
/* disable the baudrate generator */
ltq_w32_mask(ASCCON_R, 0, port->membase + LTQ_ASC_CON);
asc_update_bits(ASCCON_R, 0, port->membase + LTQ_ASC_CON);
/* make sure the fractional divider is off */
ltq_w32_mask(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON);
asc_update_bits(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON);
/* set up to use divisor of 2 */
ltq_w32_mask(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);
asc_update_bits(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);
/* now we can write the new baudrate into the register */
ltq_w32(divisor, port->membase + LTQ_ASC_BG);
/* turn the baudrate generator back on */
ltq_w32_mask(0, ASCCON_R, port->membase + LTQ_ASC_CON);
asc_update_bits(0, ASCCON_R, port->membase + LTQ_ASC_CON);
/* enable rx */
ltq_w32(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);