[src/trunk]: src/sys/arch/arm/xscale Add routines for accessing the general p...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/04661686130d
branches:  trunk
changeset: 518374:04661686130d
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Thu Nov 29 08:27:11 2001 +0000

description:
Add routines for accessing the general purpose I/O facility of
the i80312 Companion I/O chip.

diffstat:

 sys/arch/arm/xscale/files.i80312  |   3 +-
 sys/arch/arm/xscale/i80312.c      |  14 +++++-
 sys/arch/arm/xscale/i80312_gpio.c |  91 +++++++++++++++++++++++++++++++++++++++
 sys/arch/arm/xscale/i80312var.h   |  12 ++++-
 4 files changed, 117 insertions(+), 3 deletions(-)

diffs (190 lines):

diff -r 45c55bff65b5 -r 04661686130d sys/arch/arm/xscale/files.i80312
--- a/sys/arch/arm/xscale/files.i80312  Thu Nov 29 08:26:18 2001 +0000
+++ b/sys/arch/arm/xscale/files.i80312  Thu Nov 29 08:27:11 2001 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.i80312,v 1.3 2001/11/09 23:15:53 thorpej Exp $
+#      $NetBSD: files.i80312,v 1.4 2001/11/29 08:27:11 thorpej Exp $
 #
 # Configuration info for Intel i80312 Companion I/O support
 #
@@ -8,6 +8,7 @@
 device iopxs: pcibus
 # Board-specific front-end provides attachment.
 file   arch/arm/xscale/i80312.c                iopxs
+file   arch/arm/xscale/i80312_gpio.c           iopxs
 file   arch/arm/xscale/i80312_pci.c            iopxs
 file   arch/arm/xscale/i80312_pci_dma.c        iopxs
 file   arch/arm/xscale/i80312_space.c          iopxs
diff -r 45c55bff65b5 -r 04661686130d sys/arch/arm/xscale/i80312.c
--- a/sys/arch/arm/xscale/i80312.c      Thu Nov 29 08:26:18 2001 +0000
+++ b/sys/arch/arm/xscale/i80312.c      Thu Nov 29 08:27:11 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: i80312.c,v 1.4 2001/11/28 22:39:09 thorpej Exp $       */
+/*     $NetBSD: i80312.c,v 1.5 2001/11/29 08:27:11 thorpej Exp $       */
 
 /*
  * Copyright (c) 2001 Wasabi Systems, Inc.
@@ -56,6 +56,13 @@
  */
 struct bus_space i80312_bs_tag;
 
+/*
+ * There can be only one i80312, so we keep a global pointer to
+ * the softc, so board-specific code can use features of the
+ * i80312 without having to have a handle on the softc itself.
+ */
+struct i80312_softc *i80312_softc;
+
 int    i80312_pcibus_print(void *, const char *);
 
 /*
@@ -84,6 +91,11 @@
                panic("%s: unable to subregion ATU registers\n",
                    sc->sc_dev.dv_xname);
 
+       if (bus_space_subregion(sc->sc_st, sc->sc_sh, I80312_INTC_BASE,
+           I80312_INTC_SIZE, &sc->sc_intc_sh))
+               panic("%s: unable to subregion INTC registers\n",
+                   sc->sc_dev.dv_xname);
+
        /* We expect the Memory Controller to be already sliced off. */
 
        /*
diff -r 45c55bff65b5 -r 04661686130d sys/arch/arm/xscale/i80312_gpio.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/xscale/i80312_gpio.c Thu Nov 29 08:27:11 2001 +0000
@@ -0,0 +1,91 @@
+/*     $NetBSD: i80312_gpio.c,v 1.1 2001/11/29 08:27:11 thorpej Exp $  */
+
+/*
+ * Copyright (c) 2001 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Jason R. Thorpe for Wasabi Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed for the NetBSD Project by
+ *     Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Intel i80312 Companion I/O general purpose I/O support.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <machine/bus.h>
+
+#include <arm/xscale/i80312reg.h>
+#include <arm/xscale/i80312var.h>
+
+/*
+ * i80312_gpio_set_direction:
+ *
+ *     Set the direction of the indicated GPIO pins (1 == output).
+ */
+void
+i80312_gpio_set_direction(uint8_t which, uint8_t val)
+{
+       struct i80312_softc *sc = i80312_softc;
+
+       sc->sc_gpio_dir = (sc->sc_gpio_dir & ~which) | val;
+       bus_space_write_1(sc->sc_st, sc->sc_intc_sh, I80312_INTC_GOE,
+           ~sc->sc_gpio_dir);
+}
+
+/*
+ * i80312_gpio_set_val:
+ *
+ *     Set the value of the indicated GPIO pins.
+ */
+void
+i80312_gpio_set_val(uint8_t which, uint8_t val)
+{
+       struct i80312_softc *sc = i80312_softc; 
+
+       sc->sc_gpio_val = (sc->sc_gpio_val & ~which) | val;
+       bus_space_write_1(sc->sc_st, sc->sc_intc_sh, I80312_INTC_GOD,
+           ~sc->sc_gpio_val);
+}
+
+/*
+ * i80312_gpio_get_val:
+ *
+ *     Get the current state of the GPIO pins.
+ */
+uint8_t
+i80312_gpio_get_val(void)
+{
+       struct i80312_softc *sc = i80312_softc;
+
+       return (bus_space_read_1(sc->sc_st, sc->sc_intc_sh, I80312_INTC_GID));
+}
diff -r 45c55bff65b5 -r 04661686130d sys/arch/arm/xscale/i80312var.h
--- a/sys/arch/arm/xscale/i80312var.h   Thu Nov 29 08:26:18 2001 +0000
+++ b/sys/arch/arm/xscale/i80312var.h   Thu Nov 29 08:27:11 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: i80312var.h,v 1.4 2001/11/09 23:15:53 thorpej Exp $    */
+/*     $NetBSD: i80312var.h,v 1.5 2001/11/29 08:27:11 thorpej Exp $    */
 
 /*
  * Copyright (c) 2001 Wasabi Systems, Inc.
@@ -60,6 +60,7 @@
        bus_space_handle_t sc_ppb_sh;
        bus_space_handle_t sc_atu_sh;
        bus_space_handle_t sc_mem_sh;
+       bus_space_handle_t sc_intc_sh;
 
        /*
         * Secondary IDSEL Select bits for providing a private
@@ -150,9 +151,14 @@
        struct bus_space sc_pci_memt;
        struct arm32_bus_dma_tag sc_pci_dmat;
        struct arm32_pci_chipset sc_pci_chipset;
+
+       /* GPIO state */
+       uint8_t sc_gpio_dir;    /* GPIO pin direction (1 == output) */
+       uint8_t sc_gpio_val;    /* GPIO output pin value */
 };
 
 extern struct bus_space i80312_bs_tag;
+extern struct i80312_softc *i80312_softc;
 
 void   i80312_sdram_bounds(bus_space_tag_t, bus_space_handle_t,
            paddr_t *, psize_t *);
@@ -163,6 +169,10 @@
 void   i80312_io_bs_init(bus_space_tag_t, void *);
 void   i80312_mem_bs_init(bus_space_tag_t, void *);
 
+void   i80312_gpio_set_direction(uint8_t, uint8_t);
+void   i80312_gpio_set_val(uint8_t, uint8_t);
+uint8_t        i80312_gpio_get_val(void);
+
 void   i80312_pci_dma_init(bus_dma_tag_t, void *);
 
 void   i80312_pci_init(pci_chipset_tag_t, void *);