cf3c20ae |
1 | /* $OpenBSD: omap_com.c,v 1.2 2013/11/06 19:03:07 syl Exp $ */ |
2 | /* |
3 | * Copyright 2003 Wasabi Systems, Inc. |
4 | * All rights reserved. |
5 | * |
6 | * Written by Steve C. Woodford for Wasabi Systems, Inc. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * 3. All advertising materials mentioning features or use of this software |
17 | * must display the following acknowledgement: |
18 | * This product includes software developed for the NetBSD Project by |
19 | * Wasabi Systems, Inc. |
20 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
21 | * or promote products derived from this software without specific prior |
22 | * written permission. |
23 | * |
24 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
26 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
27 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
28 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ |
36 | |
37 | #include <sys/param.h> |
38 | #include <sys/systm.h> |
39 | #include <sys/device.h> |
40 | #include <sys/tty.h> |
41 | |
42 | #include <machine/intr.h> |
43 | #include <machine/bus.h> |
44 | |
45 | #include <dev/ic/comreg.h> |
46 | #include <dev/ic/comvar.h> |
47 | |
48 | /* pick up armv7_a4x_bs_tag */ |
49 | #include <arch/arm/armv7/armv7var.h> |
50 | |
51 | #include <armv7/armv7/armv7var.h> |
52 | |
53 | #define com_isr 8 |
54 | #define ISR_RECV (ISR_RXPL | ISR_XMODE | ISR_RCVEIR) |
55 | |
56 | void omapuart_attach(struct device *, struct device *, void *); |
57 | int omapuart_activate(struct device *, int); |
58 | |
59 | struct cfattach com_omap_ca = { |
60 | sizeof (struct com_softc), NULL, omapuart_attach, NULL, |
61 | omapuart_activate |
62 | }; |
63 | |
64 | void |
65 | omapuart_attach(struct device *parent, struct device *self, void *aux) |
66 | { |
67 | struct com_softc *sc = (struct com_softc *)self; |
68 | struct armv7_attach_args *aa = aux; |
69 | |
70 | sc->sc_iot = &armv7_a4x_bs_tag; /* XXX: This sucks */ |
71 | sc->sc_iobase = aa->aa_dev->mem[0].addr; |
72 | sc->sc_frequency = 48000000; |
73 | sc->sc_uarttype = COM_UART_TI16750; |
74 | |
75 | if (bus_space_map(sc->sc_iot, sc->sc_iobase, |
76 | aa->aa_dev->mem[0].size, 0, &sc->sc_ioh)) { |
77 | printf("%s: bus_space_map failed\n", __func__); |
78 | return; |
79 | } |
80 | |
81 | com_attach_subr(sc); |
82 | |
83 | (void)arm_intr_establish(aa->aa_dev->irq[0], IPL_TTY, comintr, |
84 | sc, sc->sc_dev.dv_xname); |
85 | } |
86 | |
87 | int |
88 | omapuart_activate(struct device *self, int act) |
89 | { |
90 | struct com_softc *sc = (struct com_softc *)self; |
91 | bus_space_tag_t iot = sc->sc_iot; |
92 | bus_space_handle_t ioh = sc->sc_ioh; |
93 | struct tty *tp = sc->sc_tty; |
94 | |
95 | switch (act) { |
96 | case DVACT_SUSPEND: |
97 | break; |
98 | case DVACT_RESUME: |
99 | if (sc->enabled) { |
100 | sc->sc_initialize = 1; |
101 | comparam(tp, &tp->t_termios); |
102 | bus_space_write_1(iot, ioh, com_ier, sc->sc_ier); |
103 | |
104 | if (ISSET(sc->sc_hwflags, COM_HW_SIR)) { |
105 | bus_space_write_1(iot, ioh, com_isr, |
106 | ISR_RECV); |
107 | } |
108 | } |
109 | break; |
110 | } |
111 | return 0; |
112 | } |