lantiq.c (92a19f9cec9a80ad93c06e115822deb729e2c6ad) lantiq.c (2e124b4a390ca85325fae75764bef92f0547fa25)
1/*
2 * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published
6 * by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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158lqasc_enable_ms(struct uart_port *port)
159{
160}
161
162static int
163lqasc_rx_chars(struct uart_port *port)
164{
165 struct tty_port *tport = &port->state->port;
1/*
2 * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published
6 * by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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158lqasc_enable_ms(struct uart_port *port)
159{
160}
161
162static int
163lqasc_rx_chars(struct uart_port *port)
164{
165 struct tty_port *tport = &port->state->port;
166 struct tty_struct *tty = tty_port_tty_get(tport);
167 unsigned int ch = 0, rsr = 0, fifocnt;
168
166 unsigned int ch = 0, rsr = 0, fifocnt;
167
169 if (!tty) {
170 dev_dbg(port->dev, "%s:tty is busy now", __func__);
171 return -EBUSY;
172 }
173 fifocnt =
174 ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
168 fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
175 while (fifocnt--) {
176 u8 flag = TTY_NORMAL;
177 ch = ltq_r8(port->membase + LTQ_ASC_RBUF);
178 rsr = (ltq_r32(port->membase + LTQ_ASC_STATE)
179 & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
169 while (fifocnt--) {
170 u8 flag = TTY_NORMAL;
171 ch = ltq_r8(port->membase + LTQ_ASC_RBUF);
172 rsr = (ltq_r32(port->membase + LTQ_ASC_STATE)
173 & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
180 tty_flip_buffer_push(tty);
174 tty_flip_buffer_push(tport);
181 port->icount.rx++;
182
183 /*
184 * Note that the error handling code is
185 * out of the main execution path
186 */
187 if (rsr & ASCSTATE_ANY) {
188 if (rsr & ASCSTATE_PE) {

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214 if (rsr & ASCSTATE_ROE)
215 /*
216 * Overrun is special, since it's reported
217 * immediately, and doesn't affect the current
218 * character
219 */
220 tty_insert_flip_char(tport, 0, TTY_OVERRUN);
221 }
175 port->icount.rx++;
176
177 /*
178 * Note that the error handling code is
179 * out of the main execution path
180 */
181 if (rsr & ASCSTATE_ANY) {
182 if (rsr & ASCSTATE_PE) {

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208 if (rsr & ASCSTATE_ROE)
209 /*
210 * Overrun is special, since it's reported
211 * immediately, and doesn't affect the current
212 * character
213 */
214 tty_insert_flip_char(tport, 0, TTY_OVERRUN);
215 }
216
222 if (ch != 0)
217 if (ch != 0)
223 tty_flip_buffer_push(tty);
224 tty_kref_put(tty);
218 tty_flip_buffer_push(tport);
219
225 return 0;
226}
227
228static void
229lqasc_tx_chars(struct uart_port *port)
230{
231 struct circ_buf *xmit = &port->state->xmit;
232 if (uart_tx_stopped(port)) {

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221}
222
223static void
224lqasc_tx_chars(struct uart_port *port)
225{
226 struct circ_buf *xmit = &port->state->xmit;
227 if (uart_tx_stopped(port)) {

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