1 /* $NetBSD: imx_genfb.c,v 1.1 2015/12/21 04:26:28 hkenken Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Genetec Corporation. All rights reserved. 5 * Written by Hashimoto Kenichi for Genetec Corporation. 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 GENETEC CORPORATION ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: imx_genfb.c,v 1.1 2015/12/21 04:26:28 hkenken Exp $"); 31 32 #include "opt_ddb.h" 33 #include "opt_genfb.h" 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/device.h> 38 #include <sys/intr.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 42 #include <arm/imx/imx51reg.h> 43 #include <arm/imx/imx51var.h> 44 #include <arm/imx/imx51_ipuv3var.h> 45 46 #if defined(DDB) 47 #include <machine/db_machdep.h> 48 #include <ddb/db_extern.h> 49 #endif 50 51 #include <dev/videomode/videomode.h> 52 #include <dev/wsfb/genfbvar.h> 53 54 struct imx_genfb_softc { 55 struct genfb_softc sc_gen; 56 57 bus_dma_tag_t sc_dmat; 58 bus_dma_segment_t *sc_dmasegs; 59 int sc_ndmasegs; 60 }; 61 62 #if defined(DDB) 63 static void imx_genfb_ddb_trap_callback(int); 64 static device_t imx_genfb_consoledev = NULL; 65 #endif 66 67 static int imx_genfb_match(device_t, cfdata_t, void *); 68 static void imx_genfb_attach(device_t, device_t, void *); 69 70 static int imx_genfb_ioctl(void *, void *, u_long, void *, int, lwp_t *); 71 static paddr_t imx_genfb_mmap(void *, void *, off_t, int); 72 static bool imx_genfb_shutdown(device_t, int); 73 74 CFATTACH_DECL_NEW(imx_genfb, sizeof(struct imx_genfb_softc), 75 imx_genfb_match, imx_genfb_attach, NULL, NULL); 76 77 static int 78 imx_genfb_match(device_t parent, cfdata_t cf, void *aux) 79 { 80 return 1; 81 } 82 83 static void 84 imx_genfb_attach(device_t parent, device_t self, void *aux) 85 { 86 struct imx_genfb_softc *sc = device_private(self); 87 struct imxfb_attach_args * const ifb = aux; 88 prop_dictionary_t cfg = device_properties(self); 89 struct genfb_ops ops; 90 91 sc->sc_gen.sc_dev = self; 92 sc->sc_dmat = ifb->ifb_dmat; 93 sc->sc_dmasegs = ifb->ifb_dmasegs; 94 sc->sc_ndmasegs = ifb->ifb_ndmasegs; 95 96 prop_dictionary_set_uint32(cfg, "width", ifb->ifb_width); 97 prop_dictionary_set_uint32(cfg, "height", ifb->ifb_height); 98 prop_dictionary_set_uint8(cfg, "depth", ifb->ifb_depth); 99 prop_dictionary_set_uint16(cfg, "linebytes", ifb->ifb_stride); 100 prop_dictionary_set_uint32(cfg, "address", 0); 101 prop_dictionary_set_uint32(cfg, "virtual_address", 102 (uintptr_t)ifb->ifb_fb); 103 104 genfb_init(&sc->sc_gen); 105 106 if (sc->sc_gen.sc_width == 0 || sc->sc_gen.sc_fbsize == 0) { 107 aprint_normal(": disabled\n"); 108 return; 109 } 110 111 pmf_device_register1(self, NULL, NULL, imx_genfb_shutdown); 112 113 memset(&ops, 0, sizeof(ops)); 114 ops.genfb_ioctl = imx_genfb_ioctl; 115 ops.genfb_mmap = imx_genfb_mmap; 116 117 aprint_naive("\n"); 118 119 bool is_console = false; 120 prop_dictionary_get_bool(cfg, "is_console", &is_console); 121 122 if (is_console) 123 aprint_normal(": switching to framebuffer console\n"); 124 else 125 aprint_normal("\n"); 126 127 genfb_attach(&sc->sc_gen, &ops); 128 129 #if defined(DDB) 130 if (is_console) { 131 imx_genfb_consoledev = self; 132 db_trap_callback = imx_genfb_ddb_trap_callback; 133 } 134 #endif 135 } 136 137 static int 138 imx_genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, lwp_t *l) 139 { 140 struct wsdisplayio_bus_id *busid; 141 142 switch (cmd) { 143 case WSDISPLAYIO_GTYPE: 144 *(u_int *)data = WSDISPLAY_TYPE_IMXIPU; 145 return 0; 146 case WSDISPLAYIO_GET_BUSID: 147 busid = data; 148 busid->bus_type = WSDISPLAYIO_BUS_SOC; 149 return 0; 150 default: 151 return EPASSTHROUGH; 152 } 153 } 154 155 static paddr_t 156 imx_genfb_mmap(void *v, void *vs, off_t offset, int prot) 157 { 158 struct imx_genfb_softc *sc = v; 159 160 KASSERT(offset >= 0); 161 KASSERT(offset < sc->sc_dmasegs[0].ds_len); 162 163 return bus_dmamem_mmap(sc->sc_dmat, sc->sc_dmasegs, sc->sc_ndmasegs, 164 offset, prot, BUS_DMA_PREFETCHABLE); 165 } 166 167 static bool 168 imx_genfb_shutdown(device_t self, int flags) 169 { 170 genfb_enable_polling(self); 171 return true; 172 } 173 174 #if defined(DDB) 175 static void 176 imx_genfb_ddb_trap_callback(int where) 177 { 178 if (imx_genfb_consoledev == NULL) 179 return; 180 181 if (where) 182 genfb_enable_polling(imx_genfb_consoledev); 183 else 184 genfb_disable_polling(imx_genfb_consoledev); 185 } 186 #endif 187 188 void 189 imx_genfb_set_videomode(device_t dev, u_int width, u_int height) 190 { 191 struct imx_genfb_softc *sc = device_private(dev); 192 193 if (sc->sc_gen.sc_width != width || sc->sc_gen.sc_height != height) { 194 device_printf(sc->sc_gen.sc_dev, 195 "mode switching not yet supported\n"); 196 } 197 } 198
Indexes created Sat Sep 20 22:09:52 GMT 2025