1 /*- 2 * Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * HDMI core module 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/bus.h> 39 #include <sys/rman.h> 40 41 #include <dev/ofw/ofw_bus.h> 42 #include <dev/ofw/ofw_bus_subr.h> 43 44 #include <machine/bus.h> 45 46 #include <dev/videomode/videomode.h> 47 #include <dev/videomode/edidvar.h> 48 49 #include <arm/freescale/imx/imx_ccmvar.h> 50 #include <arm/freescale/imx/imx_iomuxvar.h> 51 #include <arm/freescale/imx/imx_iomuxreg.h> 52 53 #include <dev/hdmi/dwc_hdmi.h> 54 55 #include "hdmi_if.h" 56 57 struct imx_hdmi_softc { 58 struct dwc_hdmi_softc base; 59 phandle_t i2c_xref; 60 }; 61 62 static struct ofw_compat_data compat_data[] = { 63 {"fsl,imx6dl-hdmi", 1}, 64 {"fsl,imx6q-hdmi", 1}, 65 {NULL, 0} 66 }; 67 68 static device_t 69 imx_hdmi_get_i2c_dev(device_t dev) 70 { 71 struct imx_hdmi_softc *sc; 72 73 sc = device_get_softc(dev); 74 75 if (sc->i2c_xref == 0) 76 return (NULL); 77 78 return (OF_device_from_xref(sc->i2c_xref)); 79 } 80 81 static int 82 imx_hdmi_detach(device_t dev) 83 { 84 struct imx_hdmi_softc *sc; 85 86 sc = device_get_softc(dev); 87 88 if (sc->base.sc_mem_res != NULL) 89 bus_release_resource(dev, SYS_RES_MEMORY, 90 sc->base.sc_mem_rid, sc->base.sc_mem_res); 91 92 return (0); 93 } 94 95 static int 96 imx_hdmi_attach(device_t dev) 97 { 98 struct imx_hdmi_softc *sc; 99 int err; 100 uint32_t gpr3; 101 phandle_t node, i2c_xref; 102 103 sc = device_get_softc(dev); 104 sc->base.sc_dev = dev; 105 sc->base.sc_get_i2c_dev = imx_hdmi_get_i2c_dev; 106 err = 0; 107 108 /* Allocate memory resources. */ 109 sc->base.sc_mem_rid = 0; 110 sc->base.sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 111 &sc->base.sc_mem_rid, RF_ACTIVE); 112 if (sc->base.sc_mem_res == NULL) { 113 device_printf(dev, "Cannot allocate memory resources\n"); 114 err = ENXIO; 115 goto out; 116 } 117 118 node = ofw_bus_get_node(dev); 119 if (OF_getencprop(node, "ddc-i2c-bus", &i2c_xref, sizeof(i2c_xref)) == -1) 120 sc->i2c_xref = 0; 121 else 122 sc->i2c_xref = i2c_xref; 123 124 imx_ccm_hdmi_enable(); 125 126 gpr3 = imx_iomux_gpr_get(IOMUXC_GPR3); 127 gpr3 &= ~(IOMUXC_GPR3_HDMI_MASK); 128 gpr3 |= IOMUXC_GPR3_HDMI_IPU1_DI0; 129 imx_iomux_gpr_set(IOMUXC_GPR3, gpr3); 130 131 return (dwc_hdmi_init(dev)); 132 133 out: 134 imx_hdmi_detach(dev); 135 136 return (err); 137 } 138 139 static int 140 imx_hdmi_probe(device_t dev) 141 { 142 143 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 144 return (ENXIO); 145 146 device_set_desc(dev, "Freescale i.MX6 HDMI core"); 147 148 return (BUS_PROBE_DEFAULT); 149 } 150 151 static device_method_t imx_hdmi_methods[] = { 152 /* Device interface */ 153 DEVMETHOD(device_probe, imx_hdmi_probe), 154 DEVMETHOD(device_attach, imx_hdmi_attach), 155 DEVMETHOD(device_detach, imx_hdmi_detach), 156 157 /* HDMI methods */ 158 DEVMETHOD(hdmi_get_edid, dwc_hdmi_get_edid), 159 DEVMETHOD(hdmi_set_videomode, dwc_hdmi_set_videomode), 160 161 DEVMETHOD_END 162 }; 163 164 static driver_t imx_hdmi_driver = { 165 "hdmi", 166 imx_hdmi_methods, 167 sizeof(struct imx_hdmi_softc) 168 }; 169 170 static devclass_t imx_hdmi_devclass; 171 172 DRIVER_MODULE(hdmi, simplebus, imx_hdmi_driver, imx_hdmi_devclass, 0, 0); 173