1 /* $NetBSD: gxlcd.c,v 1.6 2023/12/20 13:55:17 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved. 5 * Written by Hiroyuki Bessho 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 * 3. The name of Genetec Corporation may not be used to endorse or 16 * promote products derived from this software without specific prior 17 * written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * LCD driver for Gumstix consoleLCD-vx and compatible. 34 * (based on the Intel Lubbock driver). 35 * 36 * Controlling LCD is almost completely done through PXA2X0's 37 * integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c. 38 * 39 * Codes in this file provide platform specific things including: 40 * LCD on/off switch and backlight 41 * LCD panel geometry 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: gxlcd.c,v 1.6 2023/12/20 13:55:17 thorpej Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/conf.h> 50 #include <sys/uio.h> 51 52 #include <dev/cons.h> 53 #include <dev/wscons/wsconsio.h> 54 #include <dev/wscons/wsdisplayvar.h> 55 #include <dev/wscons/wscons_callbacks.h> 56 57 #include <sys/bus.h> 58 59 #include <arm/xscale/pxa2x0var.h> 60 #include <arm/xscale/pxa2x0reg.h> 61 #include <arm/xscale/pxa2x0_lcd.h> 62 #include <arm/xscale/pxa2x0_gpio.h> 63 64 65 #ifndef CURRENT_DISPLAY 66 #define CURRENT_DISPLAY samsung_lte430wq_f0c 67 #endif 68 69 70 static int gxlcd_match(device_t, cfdata_t, void *); 71 static void gxlcd_attach(device_t, device_t, void *); 72 73 void gxlcd_cnattach(void); 74 75 static int gxlcd_ioctl(void *, void *, u_long, void *, int, struct lwp *); 76 static int gxlcd_show_screen(void *, void *, int, 77 void (*)(void *, int, int), void *); 78 79 80 /* 81 * wsdisplay glue 82 */ 83 static struct pxa2x0_wsscreen_descr gxlcd_std_screen = { 84 .c = { 85 .name = "std", 86 .textops = &pxa2x0_lcd_emulops, 87 .fontwidth = 8, 88 .fontheight = 16, 89 .capabilities = WSSCREEN_WSCOLORS, 90 }, 91 .depth = 16, /* bits per pixel */ 92 }; 93 94 static const struct wsscreen_descr *gxlcd_scr_descr[] = { 95 &gxlcd_std_screen.c 96 }; 97 98 static const struct wsscreen_list gxlcd_screen_list = { 99 .nscreens = __arraycount(gxlcd_scr_descr), 100 .screens = gxlcd_scr_descr, 101 }; 102 103 struct wsdisplay_accessops gxlcd_accessops = { 104 gxlcd_ioctl, 105 pxa2x0_lcd_mmap, 106 pxa2x0_lcd_alloc_screen, 107 pxa2x0_lcd_free_screen, 108 gxlcd_show_screen, 109 NULL, 110 NULL, 111 NULL, 112 }; 113 114 const struct lcd_panel_geometry samsung_lte430wq_f0c = 115 { 116 480, /* Width */ 117 272, /* Height */ 118 0, /* No extra lines */ 119 120 LCDPANEL_ACTIVE | LCDPANEL_PCP, 121 1, /* clock divider */ 122 0, /* AC bias pin freq */ 123 124 41, /* horizontal sync pulse width */ 125 4, /* BLW */ 126 8, /* ELW */ 127 128 10, /* vertical sync pulse width */ 129 2, /* BFW */ 130 4, /* EFW */ 131 }; 132 133 static int gxlcd_console; 134 135 136 CFATTACH_DECL_NEW(gxlcd, sizeof(struct pxa2x0_lcd_softc), 137 gxlcd_match, gxlcd_attach, NULL, NULL); 138 139 140 static int 141 gxlcd_match(device_t parent, cfdata_t match, void *aux) 142 { 143 struct pxaip_attach_args *pxa = aux; 144 145 if (strcmp(pxa->pxa_name, match->cf_name) != 0) 146 return 0; 147 148 pxa->pxa_size = PXA2X0_LCDC_SIZE; 149 return 1; 150 } 151 152 static void 153 gxlcd_attach(device_t parent, device_t self, void *aux) 154 { 155 struct pxa2x0_lcd_softc *sc = device_private(self); 156 struct wsemuldisplaydev_attach_args aa; 157 158 sc->dev = self; 159 pxa2x0_lcd_attach_sub(sc, aux, &CURRENT_DISPLAY); 160 161 aa.console = gxlcd_console; 162 aa.scrdata = &gxlcd_screen_list; 163 aa.accessops = &gxlcd_accessops; 164 aa.accesscookie = sc; 165 166 pxa2x0_lcd_setup_wsscreen(&gxlcd_std_screen, &CURRENT_DISPLAY, NULL); 167 168 (void) config_found(self, &aa, wsemuldisplaydevprint, CFARGS_NONE); 169 } 170 171 void 172 gxlcd_cnattach(void) 173 { 174 175 pxa2x0_lcd_cnattach(&gxlcd_std_screen, &CURRENT_DISPLAY); 176 177 gxlcd_console = 1; 178 } 179 180 181 /* 182 * wsdisplay accessops overrides 183 */ 184 static int 185 gxlcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 186 { 187 int res = EINVAL; 188 189 switch (cmd) { 190 case WSDISPLAYIO_SVIDEO: 191 if (*(int *)data == WSDISPLAYIO_VIDEO_ON) 192 pxa2x0_gpio_set_function(17, GPIO_IN); 193 else 194 pxa2x0_gpio_set_function(17, GPIO_OUT | GPIO_CLR); 195 break; 196 } 197 198 if (res == EINVAL) 199 res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 200 return res; 201 } 202 203 static int 204 gxlcd_show_screen(void *v, void *cookie, int waitok, 205 void (*cb_func)(void *, int, int), void *cb_arg) 206 { 207 int error; 208 209 error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg); 210 if (error) 211 return (error); 212 213 /* Turn on LCD */ 214 pxa2x0_gpio_set_function(17, GPIO_IN); 215 216 return 0; 217 } 218
Indexes created Wed Sep 24 15:09:51 GMT 2025