1 /* $NetBSD: sunxi_fb.c,v 1.8 2022/09/25 07:50:23 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2015-2019 Jared McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_wsdisplay_compat.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: sunxi_fb.c,v 1.8 2022/09/25 07:50:23 riastradh Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/device.h> 37 38 #include <dev/fdt/fdtvar.h> 39 40 #include <arm/sunxi/sunxi_drm.h> 41 42 #include <drm/drm_drv.h> 43 #include <drm/drmfb.h> 44 45 static int sunxi_fb_match(device_t, cfdata_t, void *); 46 static void sunxi_fb_attach(device_t, device_t, void *); 47 48 static void sunxi_fb_init(struct sunxi_drm_task *); 49 50 static bool sunxi_fb_shutdown(device_t, int); 51 52 struct sunxi_fb_softc { 53 struct drmfb_softc sc_drmfb; 54 device_t sc_dev; 55 struct sunxi_drm_softc *sc_drm; 56 struct sunxi_drm_framebuffer *sc_fb; 57 struct sunxi_drmfb_attach_args sc_sfa; 58 struct sunxi_drm_task sc_attach_task; 59 }; 60 61 static paddr_t sunxi_fb_mmapfb(struct drmfb_softc *, off_t, int); 62 static int sunxi_fb_ioctl(struct drmfb_softc *, u_long, void *, int, 63 lwp_t *); 64 65 static const struct drmfb_params sunxifb_drmfb_params = { 66 .dp_mmapfb = sunxi_fb_mmapfb, 67 .dp_ioctl = sunxi_fb_ioctl, 68 69 }; 70 71 CFATTACH_DECL_NEW(sunxi_fb, sizeof(struct sunxi_fb_softc), 72 sunxi_fb_match, sunxi_fb_attach, NULL, NULL); 73 74 static int 75 sunxi_fb_match(device_t parent, cfdata_t cf, void *aux) 76 { 77 return 1; 78 } 79 80 static void 81 sunxi_fb_attach(device_t parent, device_t self, void *aux) 82 { 83 struct sunxi_fb_softc * const sc = device_private(self); 84 struct sunxi_drm_softc * const drmsc = device_private(parent); 85 struct sunxi_drmfb_attach_args * const sfa = aux; 86 87 sc->sc_dev = self; 88 sc->sc_drm = drmsc; 89 sc->sc_sfa = *sfa; 90 sc->sc_fb = to_sunxi_drm_framebuffer(sfa->sfa_fb_helper->fb); 91 92 aprint_naive("\n"); 93 aprint_normal("\n"); 94 95 sunxi_task_init(&sc->sc_attach_task, &sunxi_fb_init); 96 sunxi_task_schedule(parent, &sc->sc_attach_task); 97 } 98 99 static void 100 sunxi_fb_init(struct sunxi_drm_task *task) 101 { 102 struct sunxi_fb_softc * const sc = 103 container_of(task, struct sunxi_fb_softc, sc_attach_task); 104 device_t dev = sc->sc_dev; 105 struct sunxi_drmfb_attach_args * const sfa = &sc->sc_sfa; 106 int error; 107 108 const struct drmfb_attach_args da = { 109 .da_dev = dev, 110 .da_fb_helper = sfa->sfa_fb_helper, 111 .da_fb_sizes = &sfa->sfa_fb_sizes, 112 .da_fb_vaddr = sc->sc_fb->obj->vaddr, 113 .da_fb_linebytes = sfa->sfa_fb_linebytes, 114 .da_params = &sunxifb_drmfb_params, 115 }; 116 117 118 error = drmfb_attach(&sc->sc_drmfb, &da); 119 if (error) { 120 aprint_error_dev(dev, "failed to attach drmfb: %d\n", error); 121 return; 122 } 123 124 pmf_device_register1(dev, NULL, NULL, sunxi_fb_shutdown); 125 } 126 127 static bool 128 sunxi_fb_shutdown(device_t self, int flags) 129 { 130 struct sunxi_fb_softc * const sc = device_private(self); 131 132 return drmfb_shutdown(&sc->sc_drmfb, flags); 133 } 134 135 static paddr_t 136 sunxi_fb_mmapfb(struct drmfb_softc *sc, off_t off, int prot) 137 { 138 struct sunxi_fb_softc * const tfb_sc = (struct sunxi_fb_softc *)sc; 139 struct drm_gem_cma_object *obj = tfb_sc->sc_fb->obj; 140 141 KASSERT(off >= 0); 142 KASSERT(off < obj->dmasize); 143 144 return bus_dmamem_mmap(obj->dmat, obj->dmasegs, 1, off, prot, 145 BUS_DMA_PREFETCHABLE); 146 } 147 148 static int 149 sunxi_fb_ioctl(struct drmfb_softc *sc, u_long cmd, void *data, int flag, 150 lwp_t *l) 151 { 152 struct wsdisplayio_bus_id *busid; 153 struct wsdisplayio_fbinfo *fbi; 154 struct rasops_info *ri = &sc->sc_genfb.vd.active->scr_ri; 155 int error; 156 157 switch (cmd) { 158 case WSDISPLAYIO_GET_BUSID: 159 busid = data; 160 busid->bus_type = WSDISPLAYIO_BUS_SOC; 161 return 0; 162 case WSDISPLAYIO_GTYPE: 163 *(u_int *)data = WSDISPLAY_TYPE_GENFB; 164 return 0; 165 case WSDISPLAYIO_GET_FBINFO: 166 fbi = data; 167 error = wsdisplayio_get_fbinfo(ri, fbi); 168 fbi->fbi_flags |= WSFB_VRAM_IS_RAM; 169 return error; 170 default: 171 return EPASSTHROUGH; 172 } 173 } 174
Indexes created Sun Oct 25 00:26:45 UTC 2026