pxa.c (b10778a00d40b3d9fdaaf5891e802794781ff71c) pxa.c (50d1e7d1077b276e8faa9eebf8b710edf31fdeea)
1/*
2 * Based on drivers/serial/8250.c by Russell King.
3 *
4 * Author: Nicolas Pitre
5 * Created: Feb 20, 2003
6 * Copyright: (C) 2003 Monta Vista Software, Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify

--- 209 unchanged lines hidden (view full) ---

218 struct uart_pxa_port *up = (struct uart_pxa_port *)port;
219
220 if (!(up->ier & UART_IER_THRI)) {
221 up->ier |= UART_IER_THRI;
222 serial_out(up, UART_IER, up->ier);
223 }
224}
225
1/*
2 * Based on drivers/serial/8250.c by Russell King.
3 *
4 * Author: Nicolas Pitre
5 * Created: Feb 20, 2003
6 * Copyright: (C) 2003 Monta Vista Software, Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify

--- 209 unchanged lines hidden (view full) ---

218 struct uart_pxa_port *up = (struct uart_pxa_port *)port;
219
220 if (!(up->ier & UART_IER_THRI)) {
221 up->ier |= UART_IER_THRI;
222 serial_out(up, UART_IER, up->ier);
223 }
224}
225
226/* should hold up->port.lock */
226static inline void check_modem_status(struct uart_pxa_port *up)
227{
228 int status;
229
230 status = serial_in(up, UART_MSR);
231
232 if ((status & UART_MSR_ANY_DELTA) == 0)
233 return;

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250static inline irqreturn_t serial_pxa_irq(int irq, void *dev_id)
251{
252 struct uart_pxa_port *up = dev_id;
253 unsigned int iir, lsr;
254
255 iir = serial_in(up, UART_IIR);
256 if (iir & UART_IIR_NO_INT)
257 return IRQ_NONE;
227static inline void check_modem_status(struct uart_pxa_port *up)
228{
229 int status;
230
231 status = serial_in(up, UART_MSR);
232
233 if ((status & UART_MSR_ANY_DELTA) == 0)
234 return;

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251static inline irqreturn_t serial_pxa_irq(int irq, void *dev_id)
252{
253 struct uart_pxa_port *up = dev_id;
254 unsigned int iir, lsr;
255
256 iir = serial_in(up, UART_IIR);
257 if (iir & UART_IIR_NO_INT)
258 return IRQ_NONE;
259 spin_lock(&up->port.lock);
258 lsr = serial_in(up, UART_LSR);
259 if (lsr & UART_LSR_DR)
260 receive_chars(up, &lsr);
261 check_modem_status(up);
262 if (lsr & UART_LSR_THRE)
263 transmit_chars(up);
260 lsr = serial_in(up, UART_LSR);
261 if (lsr & UART_LSR_DR)
262 receive_chars(up, &lsr);
263 check_modem_status(up);
264 if (lsr & UART_LSR_THRE)
265 transmit_chars(up);
266 spin_unlock(&up->port.lock);
264 return IRQ_HANDLED;
265}
266
267static unsigned int serial_pxa_tx_empty(struct uart_port *port)
268{
269 struct uart_pxa_port *up = (struct uart_pxa_port *)port;
270 unsigned long flags;
271 unsigned int ret;

--- 695 unchanged lines hidden --- 		267 return IRQ_HANDLED;
268}
269
270static unsigned int serial_pxa_tx_empty(struct uart_port *port)
271{
272 struct uart_pxa_port *up = (struct uart_pxa_port *)port;
273 unsigned long flags;
274 unsigned int ret;

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