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sys/dev/vt/hw/simplefb/simplefb.c
- This file was added.
| /*- | |||||||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||||||
| * | |||||||||
| * Copyright (c) 2014 The FreeBSD Foundation | |||||||||
| * Copyright (c) 2021 Andrew Turner | |||||||||
| * | |||||||||
andrew: @emaste Can I drop this? It's in all the `vt` drivers where the Foundation has a copyright… | |||||||||
Not Done Inline ActionsYes all FreeBSD Foundation copyrights can have All rights reserved. removed. I did a pass over the tree before but did not get everything. emaste: Yes all FreeBSD Foundation copyrights can have `All rights reserved.` removed. I did a pass… | |||||||||
| * Portions of this software was developed by Aleksandr Rybalko under | |||||||||
| * sponsorship from the FreeBSD Foundation. | |||||||||
| * | |||||||||
Not Done Inline ActionsYou could change this to "Portions of this software were..." emaste: You could change this to "Portions of this software were..."
| |||||||||
| * 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/systm.h> | |||||||||
| #include <sys/kernel.h> | |||||||||
| #include <sys/fbio.h> | |||||||||
| #include <vm/vm.h> | |||||||||
| #include <vm/pmap.h> | |||||||||
| #include <dev/vt/vt.h> | |||||||||
| #include <dev/vt/hw/fb/vt_fb.h> | |||||||||
| #include <dev/vt/colors/vt_termcolors.h> | |||||||||
| #include <dev/ofw/openfirm.h> | |||||||||
| #include <dev/ofw/ofw_bus.h> | |||||||||
| #include <dev/ofw/ofw_subr.h> | |||||||||
| #include <dev/ofw/ofw_bus_subr.h> | |||||||||
| static vd_init_t vt_simplefb_init; | |||||||||
| static vd_fini_t vt_simplefb_fini; | |||||||||
| static vd_probe_t vt_simplefb_probe; | |||||||||
| static struct vt_driver vt_simplefb_driver = { | |||||||||
| .vd_name = "simplefb", | |||||||||
| .vd_probe = vt_simplefb_probe, | |||||||||
| .vd_init = vt_simplefb_init, | |||||||||
| .vd_fini = vt_simplefb_fini, | |||||||||
| .vd_blank = vt_fb_blank, | |||||||||
| .vd_bitblt_text = vt_fb_bitblt_text, | |||||||||
| .vd_invalidate_text = vt_fb_invalidate_text, | |||||||||
| .vd_bitblt_bmp = vt_fb_bitblt_bitmap, | |||||||||
| .vd_drawrect = vt_fb_drawrect, | |||||||||
| .vd_setpixel = vt_fb_setpixel, | |||||||||
| .vd_fb_ioctl = vt_fb_ioctl, | |||||||||
| .vd_fb_mmap = vt_fb_mmap, | |||||||||
| .vd_suspend = vt_suspend, | |||||||||
| .vd_resume = vt_resume, | |||||||||
| /* Better than efifb, but still generic driver. */ | |||||||||
| .vd_priority = VD_PRIORITY_GENERIC + 2, | |||||||||
| }; | |||||||||
| struct { | |||||||||
| const char *name; | |||||||||
| int rbits, rshift; | |||||||||
| int gbits, gshift; | |||||||||
| int bbits, bshift; | |||||||||
| int depth; | |||||||||
| enum vt_color_format format; | |||||||||
| } simplefb_formats[] = { | |||||||||
| { | |||||||||
| .name = "r5g6b5", | |||||||||
| .rbits = 5, .rshift = 11, | |||||||||
| .gbits = 6, .gshift = 5, | |||||||||
| .bbits = 5, .bshift = 0, | |||||||||
Not Done Inline Actions
I think, if I understand the notation correctly? kevans: I think, if I understand the notation correctly? | |||||||||
Not Done Inline ActionsYes. All I saw defined from higher to lower. So "b5" is lower 5 bits. ray: Yes. All I saw defined from higher to lower. So "b5" is lower 5 bits. | |||||||||
| .depth = 16, .format = COLOR_FORMAT_RGB, | |||||||||
| }, | |||||||||
| { | |||||||||
| .name = "r8g8b8", | |||||||||
Not Done Inline ActionsI only see a8r8g8b8 and r5g6b5 as supported format currently : https://cgit.freebsd.org/src/tree/sys/contrib/device-tree/Bindings/display/simple-framebuffer.yaml#n82 manu: I only see a8r8g8b8 and r5g6b5 as supported format currently : https://cgit.freebsd. | |||||||||
Done Inline ActionsMost of them are missing from the bindings. This seems to be a full list of the currently supported formats: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/platform_data/simplefb.h?id=d665ea6ea86c785760ee4bad4543dab3267ad074#n16 I can easily add the other formats. It looks like a8r8g8b8, r5g6b5, and r8g8b8 are used in the in-tree dts files. Many of the simple-framebuffer nodes lack a format so I guess the firmware fills this property in. andrew: Most of them are missing from the bindings. This seems to be a full list of the currently… | |||||||||
Not Done Inline ActionsI'll boot a few board this weekend to check if there is other format added by bootloader. manu: I'll boot a few board this weekend to check if there is other format added by bootloader. | |||||||||
| .rbits = 8, .rshift = 16, | |||||||||
| .gbits = 8, .gshift = 8, | |||||||||
| .bbits = 8, .bshift = 0, | |||||||||
| .depth = 24, .format = COLOR_FORMAT_RGB, | |||||||||
| }, | |||||||||
| { | |||||||||
| .name = "a8r8g8b8", | |||||||||
| .rbits = 8, .rshift = 16, | |||||||||
| .gbits = 8, .gshift = 8, | |||||||||
| .bbits = 8, .bshift = 0, | |||||||||
| .depth = 32, .format = COLOR_FORMAT_RGB, | |||||||||
| }, | |||||||||
| { | |||||||||
| .name = "x8r8g8b8", | |||||||||
| .rbits = 8, .rshift = 16, | |||||||||
| .gbits = 8, .gshift = 8, | |||||||||
| .bbits = 8, .bshift = 0, | |||||||||
| .depth = 32, .format = COLOR_FORMAT_RGB, | |||||||||
| }, | |||||||||
| { | |||||||||
| .name = "x2r10g10b10", | |||||||||
| .rbits = 10, .rshift = 20, | |||||||||
| .gbits = 10, .gshift = 10, | |||||||||
| .bbits = 10, .bshift = 0, | |||||||||
| .depth = 32, .format = COLOR_FORMAT_RGB, | |||||||||
| }, | |||||||||
| }; | |||||||||
| static struct fb_info local_info; | |||||||||
| VT_DRIVER_DECLARE(vt_simplefb, vt_simplefb_driver); | |||||||||
| static bool | |||||||||
| vt_simplefb_node(phandle_t *nodep) | |||||||||
| { | |||||||||
Not Done Inline ActionsHrm, this is what we're using everywhere I suppose :( emaste: Hrm, this is what we're using everywhere I suppose :( | |||||||||
| phandle_t chosen, node; | |||||||||
| chosen = OF_finddevice("/chosen"); | |||||||||
| if (chosen == -1) | |||||||||
| return (false); | |||||||||
| for (node = OF_child(chosen); node != 0; node = OF_peer(node)) { | |||||||||
| if (ofw_bus_node_is_compatible(node, "simple-framebuffer")) | |||||||||
| break; | |||||||||
| } | |||||||||
| if (node == 0) | |||||||||
| return (false); | |||||||||
| if (nodep != NULL) | |||||||||
| *nodep = node; | |||||||||
| return (true); | |||||||||
| } | |||||||||
| static int | |||||||||
| vt_simplefb_probe(struct vt_device *vd) | |||||||||
| { | |||||||||
| int disabled; | |||||||||
| disabled = 0; | |||||||||
| TUNABLE_INT_FETCH("hw.syscons.disable", &disabled); | |||||||||
| if (disabled != 0) | |||||||||
| return (CN_DEAD); | |||||||||
| if (!vt_simplefb_node(NULL)) | |||||||||
| return (CN_DEAD); | |||||||||
| return (CN_INTERNAL); | |||||||||
| } | |||||||||
| static int | |||||||||
| vt_simplefb_init(struct vt_device *vd) | |||||||||
| { | |||||||||
| char format[16]; | |||||||||
| pcell_t height, width, stride; | |||||||||
| struct fb_info *sc; | |||||||||
| phandle_t node; | |||||||||
| bus_size_t size; | |||||||||
| int error; | |||||||||
| /* Initialize softc */ | |||||||||
| vd->vd_softc = sc = &local_info; | |||||||||
| if (!vt_simplefb_node(&node)) | |||||||||
| return (CN_DEAD); | |||||||||
| if (OF_getencprop(node, "height", &height, sizeof(height)) == -1 || | |||||||||
| OF_getencprop(node, "width", &width, sizeof(width)) == -1 || | |||||||||
| OF_getencprop(node, "stride", &stride, sizeof(stride)) == -1 || | |||||||||
| OF_getprop(node, "format", format, sizeof(format)) == -1) { | |||||||||
| return (CN_DEAD); | |||||||||
| } | |||||||||
| sc->fb_height = height; | |||||||||
| sc->fb_width = width; | |||||||||
| sc->fb_stride = stride; | |||||||||
| sc->fb_cmsize = NCOLORS; | |||||||||
| error = 1; | |||||||||
| for (int i = 0; i < nitems(simplefb_formats); i++) { | |||||||||
| if (strcmp(format, simplefb_formats[i].name) == 0) { | |||||||||
| vt_config_cons_colors(sc, | |||||||||
| simplefb_formats[i].format, | |||||||||
| (1 << simplefb_formats[i].rbits) - 1, | |||||||||
| simplefb_formats[i].rshift, | |||||||||
| (1 << simplefb_formats[i].gbits) - 1, | |||||||||
| simplefb_formats[i].gshift, | |||||||||
| (1 << simplefb_formats[i].bbits) - 1, | |||||||||
| simplefb_formats[i].bshift); | |||||||||
| sc->fb_depth = sc->fb_bpp = simplefb_formats[i].depth; | |||||||||
| error = 0; | |||||||||
| break; | |||||||||
| } | |||||||||
| } | |||||||||
| if (error != 0) | |||||||||
| return (CN_DEAD); | |||||||||
| ofw_reg_to_paddr(node, 0, &sc->fb_pbase, &size, NULL); | |||||||||
| sc->fb_vbase = (intptr_t)pmap_mapdev_attr(sc->fb_pbase, | |||||||||
| size, VM_MEMATTR_WRITE_COMBINING); | |||||||||
| sc->fb_size = size; | |||||||||
| vt_fb_init(vd); | |||||||||
| return (CN_INTERNAL); | |||||||||
| } | |||||||||
| static void | |||||||||
| vt_simplefb_fini(struct vt_device *vd, void *softc) | |||||||||
| { | |||||||||
| struct fb_info *sc; | |||||||||
| sc = softc; | |||||||||
| vt_fb_fini(vd, softc); | |||||||||
| pmap_unmapdev((void *)sc->fb_vbase, sc->fb_size); | |||||||||
| } | |||||||||
@emaste Can I drop this? It's in all the vt drivers where the Foundation has a copyright statement.