j720lcd.c revision 1.3.64.1
1 /* $NetBSD: j720lcd.c,v 1.3.64.1 2008/05/16 02:22:27 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by IWAMOTO Toshihiro. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS 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 /* Jornada 720 LCD screen driver. */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: j720lcd.c,v 1.3.64.1 2008/05/16 02:22:27 yamt Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/kernel.h> 41 42 #include <machine/config_hook.h> 43 #include <machine/platid.h> 44 #include <machine/platid_mask.h> 45 46 #include <arm/sa11x0/sa11x0_var.h> 47 #include <arm/sa11x0/sa11x0_gpioreg.h> 48 #include <arm/sa11x0/sa11x0_ppcreg.h> 49 #include <arm/sa11x0/sa11x0_sspreg.h> 50 51 #include <hpcarm/dev/j720sspvar.h> 52 #include <hpcarm/dev/sed1356var.h> 53 54 #ifdef DEBUG 55 #define DPRINTF(arg) printf arg 56 #else 57 #define DPRINTF(arg) /* nothing */ 58 #endif 59 60 struct j720lcd_softc { 61 struct device sc_dev; 62 63 struct j720ssp_softc *sc_ssp; 64 }; 65 66 static int j720lcd_match(struct device *, struct cfdata *, void *); 67 static void j720lcd_attach(struct device *, struct device *, void *); 68 69 static int j720lcd_param(void *, int, long, void *); 70 int j720lcd_power(void *, int, long, void *); 71 72 CFATTACH_DECL(j720lcd, sizeof(struct j720lcd_softc), 73 j720lcd_match, j720lcd_attach, NULL, NULL); 74 75 76 static int 77 j720lcd_match(struct device *parent, struct cfdata *cf, void *aux) 78 { 79 80 if (!platid_match(&platid, &platid_mask_MACH_HP_JORNADA_7XX)) 81 return 0; 82 if (strcmp(cf->cf_name, "j720lcd") != 0) 83 return 0; 84 85 return 1; 86 } 87 88 static void 89 j720lcd_attach(struct device *parent, struct device *self, void *aux) 90 { 91 struct j720lcd_softc *sc = (struct j720lcd_softc *)self; 92 int brightness, contrast; 93 94 sc->sc_ssp = (struct j720ssp_softc *)parent; 95 96 /* LCD brightness hooks. */ 97 config_hook(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, 98 CONFIG_HOOK_SHARE, j720lcd_param, sc); 99 config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_BRIGHTNESS, 100 CONFIG_HOOK_SHARE, j720lcd_param, sc); 101 config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_BRIGHTNESS_MAX, 102 CONFIG_HOOK_SHARE, j720lcd_param, sc); 103 104 /* LCD contrast hooks. */ 105 config_hook(CONFIG_HOOK_SET, CONFIG_HOOK_CONTRAST, 106 CONFIG_HOOK_SHARE, j720lcd_param, sc); 107 config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_CONTRAST, 108 CONFIG_HOOK_SHARE, j720lcd_param, sc); 109 config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_CONTRAST_MAX, 110 CONFIG_HOOK_SHARE, j720lcd_param, sc); 111 112 /* LCD power hook. */ 113 #if 0 114 config_hook(CONFIG_HOOK_POWERCONTROL, 115 CONFIG_HOOK_POWERCONTROL_LCDLIGHT, 116 CONFIG_HOOK_SHARE, j720lcd_power, sc); 117 #endif 118 119 /* Get default brightness/contrast values. */ 120 config_hook_call(CONFIG_HOOK_GET, CONFIG_HOOK_BRIGHTNESS, &brightness); 121 config_hook_call(CONFIG_HOOK_GET, CONFIG_HOOK_CONTRAST, &contrast); 122 123 printf(": brightness %d, contrast %d\n", brightness, contrast); 124 } 125 126 static int 127 j720lcd_param(void *ctx, int type, long id, void *msg) 128 { 129 struct j720lcd_softc *sc = ctx; 130 struct j720ssp_softc *ssp = sc->sc_ssp; 131 uint32_t data[2], len; 132 const int maxval = 255; 133 int i, s; 134 135 switch (type) { 136 case CONFIG_HOOK_GET: 137 switch (id) { 138 case CONFIG_HOOK_BRIGHTNESS_MAX: 139 case CONFIG_HOOK_CONTRAST_MAX: 140 *(int *)msg = maxval; 141 return 1; 142 case CONFIG_HOOK_BRIGHTNESS: 143 data[0] = 0xd6; 144 data[1] = 0x11; 145 len = 2; 146 break; 147 case CONFIG_HOOK_CONTRAST: 148 data[0] = 0xd4; 149 data[1] = 0x11; 150 len = 2; 151 break; 152 default: 153 return 0; 154 } 155 break; 156 157 case CONFIG_HOOK_SET: 158 switch (id) { 159 case CONFIG_HOOK_BRIGHTNESS: 160 if (*(int *)msg >= 0) { 161 data[0] = 0xd3; 162 data[1] = maxval - *(int *)msg; 163 len = 2; 164 } else { 165 /* XXX hack */ 166 data[0] = 0xdf; 167 len = 1; 168 } 169 break; 170 case CONFIG_HOOK_CONTRAST: 171 data[0] = 0xd1; 172 data[1] = maxval - *(int *)msg; 173 len = 2; 174 break; 175 default: 176 return 0; 177 } 178 break; 179 180 default: 181 return 0; 182 } 183 184 s = splbio(); 185 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PCR, 0x2000000); 186 187 for (i = 0; i < len; i++) { 188 if (j720ssp_readwrite(ssp, 1, data[i], &data[i], 500) < 0) 189 goto out; 190 } 191 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 192 splx(s); 193 194 if (type == CONFIG_HOOK_SET) 195 return 1; 196 197 *(int *)msg = maxval - data[1]; 198 199 return 1; 200 201 out: 202 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 203 204 /* reset SSP */ 205 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x307); 206 delay(100); 207 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x387); 208 209 splx(s); 210 211 DPRINTF(("j720lcd_param: error %x %x\n", data[0], data[1])); 212 return 0; 213 214 } 215 216 int 217 j720lcd_power(void *ctx, int type, long id, void *msg) 218 { 219 struct sed1356_softc *sc = ctx; 220 struct sa11x0_softc *psc = sc->sc_parent; 221 uint32_t reg; 222 int val; 223 224 if (type != CONFIG_HOOK_POWERCONTROL || 225 id != CONFIG_HOOK_POWERCONTROL_LCDLIGHT) 226 return 0; 227 228 sed1356_init_brightness(sc, 0); 229 sed1356_init_contrast(sc, 0); 230 231 if (msg) { 232 bus_space_write_1(sc->sc_iot, sc->sc_regh, 0x1f0, 0); 233 234 reg = bus_space_read_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR); 235 reg |= 0x1; 236 bus_space_write_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR, reg); 237 delay(50000); 238 239 val = sc->sc_contrast; 240 config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_CONTRAST, &val); 241 delay(100000); 242 243 reg = bus_space_read_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR); 244 reg |= 0x4; 245 bus_space_write_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR, reg); 246 247 val = sc->sc_brightness; 248 config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, &val); 249 250 reg = bus_space_read_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR); 251 reg |= 0x2; 252 bus_space_write_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR, reg); 253 } else { 254 reg = bus_space_read_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR); 255 reg &= ~0x2; 256 bus_space_write_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR, reg); 257 reg &= ~0x4; 258 bus_space_write_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR, reg); 259 delay(100000); 260 261 val = -2; 262 config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, &val); 263 264 bus_space_write_1(sc->sc_iot, sc->sc_regh, 0x1f0, 1); 265 266 delay(100000); 267 reg = bus_space_read_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR); 268 reg &= ~0x1; 269 bus_space_write_4(psc->sc_iot, psc->sc_ppch, SAPPC_PSR, reg); 270 } 271 272 return 1; 273 } 274
Indexes created Sun Sep 28 12:09:53 GMT 2025