diff options
Diffstat (limited to 'sys/dev/terasic/mtl/terasic_mtl.c')
| -rw-r--r-- | sys/dev/terasic/mtl/terasic_mtl.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/sys/dev/terasic/mtl/terasic_mtl.c b/sys/dev/terasic/mtl/terasic_mtl.c new file mode 100644 index 000000000000..48e60c765ba2 --- /dev/null +++ b/sys/dev/terasic/mtl/terasic_mtl.c @@ -0,0 +1,110 @@ +/*- + * Copyright (c) 2012 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/condvar.h> +#include <sys/conf.h> +#include <sys/consio.h> /* struct vt_mode */ +#include <sys/fbio.h> /* video_adapter_t */ +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/mutex.h> +#include <sys/rman.h> +#include <sys/systm.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <dev/terasic/mtl/terasic_mtl.h> + +/* + * Device driver for the Terasic Multitouch LCD (MTL). Three separate + * sub-drivers that support, respectively, access to device control registers, + * the pixel frame buffer, and the text frame buffer. The last of these is + * also hooked up to syscons. + * + * Eventually, the frame buffer control registers and touch screen input FIFO + * will end up being separate sub-drivers as well. + * + * Note: sub-driver detach routines must check whether or not they have + * attached as they may be called even if the attach routine hasn't been, on + * an error. + */ +int +terasic_mtl_attach(struct terasic_mtl_softc *sc) +{ + int error; + + error = terasic_mtl_reg_attach(sc); + if (error) + goto error; + error = terasic_mtl_pixel_attach(sc); + if (error) + goto error; + error = terasic_mtl_text_attach(sc); + if (error) + goto error; + /* + * XXXRW: Once we've attached syscons, we can't detach it, so do it + * last. + */ + error = terasic_mtl_syscons_attach(sc); + if (error) + goto error; + terasic_mtl_blend_default_set(sc, TERASIC_MTL_COLOR_BLACK); + terasic_mtl_blend_pixel_set(sc, TERASIC_MTL_ALPHA_TRANSPARENT); + terasic_mtl_blend_textfg_set(sc, TERASIC_MTL_ALPHA_OPAQUE); + terasic_mtl_blend_textbg_set(sc, TERASIC_MTL_ALPHA_OPAQUE); + return (0); +error: + terasic_mtl_text_detach(sc); + terasic_mtl_pixel_detach(sc); + terasic_mtl_reg_detach(sc); + return (error); +} + +void +terasic_mtl_detach(struct terasic_mtl_softc *sc) +{ + + /* XXXRW: syscons can't detach, but we try anyway, only to panic. */ + terasic_mtl_syscons_detach(sc); + + /* All other aspects of the driver can detach just fine. */ + terasic_mtl_text_detach(sc); + terasic_mtl_pixel_detach(sc); + terasic_mtl_reg_detach(sc); +} |