1 /* $NetBSD: psh3lcd.c,v 1.5 2009/12/19 07:08:55 kiyohara Exp $ */ 2 /* 3 * Copyright (c) 2005 KIYOHARA Takashi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/errno.h> 35 #include <sys/kernel.h> 36 #include <sys/systm.h> 37 #include <sys/callout.h> 38 39 #include <machine/platid.h> 40 #include <machine/platid_mask.h> 41 42 #include <machine/config_hook.h> 43 44 #include <sh3/pfcreg.h> 45 #include <hpcsh/dev/hd64461/hd64461var.h> 46 #include <hpcsh/dev/hd64461/hd64461reg.h> 47 #include <hpcsh/dev/hd64461/hd64461gpioreg.h> 48 49 50 /* 51 * LCD contrast INC#: controlled by pin 0 in HD64461 GPIO port A. 52 * LCD contrast CS#: controlled by pin 1 in HD64461 GPIO port A. 53 * LCD contrast U/D#: controlled by pin 0 in SH7709 GPIO port D. 54 * 0 - down 55 * 1 - up 56 */ 57 #define PSH3LCD_CONTRAST_INC 0x01 58 #define PSH3LCD_CONTRAST_CS 0x02 59 #define PSH3LCD_CONTRAST_UD 0x01 60 61 /* 62 * LCD brightness: controled by HG71C105FE at AREA2. 63 * XXXX: That is custom IC. We don't know spec. X-< 64 */ 65 #define PSH3LCD_BRIGHTNESS_REG0 0xaa000072 66 #define PSH3LCD_BRIGHTNESS_REG1 0xaa000150 67 #define PSH3LCD_BRIGHTNESS_REG2 0xaa000152 68 69 /* brightness control data */ 70 static const struct psh3lcd_x0_bcd { /* 50PA, 30PA */ 71 uint8_t reg0; 72 uint8_t reg1; 73 uint8_t reg2; 74 } psh3lcd_x0_bcd[] = { 75 { 0x05, 0x08, 0x1e }, 76 { 0x05, 0x1d, 0x09 }, 77 { 0x04, 0x1e, 0x1e }, 78 { 0x06, 0x1e, 0x1e }, 79 { 0x07, 0x1e, 0x1e }, 80 { 0x00, 0x00, 0x00 } 81 }; 82 static const struct psh3lcd_xx0_bcd { /* 200JC */ 83 uint8_t reg1; 84 uint8_t reg2; 85 } psh3lcd_xx0_bcd[] = { 86 { 0x33, 0x0c }, 87 { 0x2d, 0x12 }, 88 { 0x26, 0x19 }, 89 { 0x20, 0x1f }, 90 { 0x1a, 0x25 }, 91 { 0x13, 0x2c }, 92 { 0x0d, 0x32 }, 93 { 0x07, 0x38 }, 94 { 0x01, 0x00 }, 95 { 0x00, 0x00 } 96 }; 97 98 #define PSH3LCD_XX0_BRIGHTNESS_MAX 8 99 #define PSH3LCD_X0_BRIGHTNESS_MAX 4 100 101 #define PSH3LCD_CONTRAST_MAX 2 /* XXX */ 102 #define PSH3LCD_CONTRAST 1 103 #define PSH3LCD_CONTRAST_UP 2 104 #define PSH3LCD_CONTRAST_DOWN 0 105 106 #define BCD_NO_MATCH (-1) 107 108 109 struct psh3lcd_softc { 110 device_t sc_dev; 111 int sc_brightness; 112 int sc_brightness_max; 113 void (*sc_set_brightness)(int); 114 }; 115 116 static int psh3lcd_match(device_t, struct cfdata *, void *); 117 static void psh3lcd_attach(device_t, device_t, void *); 118 119 CFATTACH_DECL_NEW(psh3lcd, sizeof(struct psh3lcd_softc), 120 psh3lcd_match, psh3lcd_attach, NULL, NULL); 121 122 123 static inline int psh3lcd_x0_bcd_get(void); 124 static inline int psh3lcd_xx0_bcd_get(void); 125 static void psh3lcd_x0_set_brightness(int); 126 static void psh3lcd_xx0_set_brightness(int); 127 static void psh3lcd_set_contrast(int); 128 static int psh3lcd_param(void *, int, long, void *); 129 static int psh3lcd_power(void *, int, long, void *); 130 131 132 static inline int 133 psh3lcd_x0_bcd_get() 134 { 135 int i; 136 uint8_t bcr0, bcr1, bcr2; 137 138 bcr0 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG0); 139 bcr1 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG1); 140 bcr2 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG2); 141 142 for (i = 0; psh3lcd_x0_bcd[i].reg0 != 0; i++) 143 if (bcr0 == psh3lcd_x0_bcd[i].reg0 && 144 bcr1 == psh3lcd_x0_bcd[i].reg1 && 145 bcr2 == psh3lcd_x0_bcd[i].reg2) 146 break; 147 if (psh3lcd_x0_bcd[i].reg0 == 0) 148 return BCD_NO_MATCH; 149 return i; 150 } 151 152 static inline int 153 psh3lcd_xx0_bcd_get() 154 { 155 int i; 156 uint8_t bcr1, bcr2; 157 158 bcr1 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG1); 159 bcr2 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG2); 160 161 for (i = 0; psh3lcd_xx0_bcd[i].reg1 != 0; i++) 162 if (bcr1 == psh3lcd_xx0_bcd[i].reg1 && 163 bcr2 == psh3lcd_xx0_bcd[i].reg2) 164 break; 165 if (psh3lcd_xx0_bcd[i].reg1 == 0) 166 return BCD_NO_MATCH; 167 return i; 168 } 169 170 static void 171 psh3lcd_xx0_set_brightness(int index) 172 { 173 174 _reg_write_1(PSH3LCD_BRIGHTNESS_REG1, psh3lcd_xx0_bcd[index].reg1); 175 _reg_write_1(PSH3LCD_BRIGHTNESS_REG2, psh3lcd_xx0_bcd[index].reg2); 176 } 177 178 static void 179 psh3lcd_x0_set_brightness(int index) 180 { 181 182 _reg_write_1(PSH3LCD_BRIGHTNESS_REG0, psh3lcd_x0_bcd[index].reg0); 183 _reg_write_1(PSH3LCD_BRIGHTNESS_REG1, psh3lcd_x0_bcd[index].reg1); 184 _reg_write_1(PSH3LCD_BRIGHTNESS_REG2, psh3lcd_x0_bcd[index].reg2); 185 } 186 187 /* 188 * contrast control function. controlled by IC (X9313W). 189 */ 190 inline void 191 psh3lcd_set_contrast(int value) 192 { 193 uint16_t gpadr; 194 uint8_t pddr; 195 196 /* CS assert */ 197 gpadr = hd64461_reg_read_2(HD64461_GPADR_REG16); 198 gpadr &= ~PSH3LCD_CONTRAST_CS; 199 hd64461_reg_write_2(HD64461_GPADR_REG16, gpadr); 200 delay(1); 201 202 /* set U/D# */ 203 pddr = _reg_read_1(SH7709_PDDR); 204 if (value == PSH3LCD_CONTRAST_UP) 205 pddr |= PSH3LCD_CONTRAST_UD; 206 else if (value == PSH3LCD_CONTRAST_DOWN) 207 pddr &= ~PSH3LCD_CONTRAST_UD; 208 _reg_write_1(SH7709_PDDR, pddr); 209 delay(3); 210 211 /* INCrement */ 212 hd64461_reg_write_2(HD64461_GPADR_REG16, gpadr & ~PSH3LCD_CONTRAST_INC); 213 delay(1); 214 hd64461_reg_write_2(HD64461_GPADR_REG16, gpadr); 215 delay(1); 216 217 /* CS deassert */ 218 gpadr |= PSH3LCD_CONTRAST_CS; 219 hd64461_reg_write_2(HD64461_GPADR_REG16, gpadr); 220 delay(1); 221 } 222 223 /* ARGSUSED */ 224 static int 225 psh3lcd_match(device_t parent __unused, struct cfdata *cfp, void *aux __unused) 226 { 227 uint8_t bcr0; 228 229 if (!platid_match(&platid, &platid_mask_MACH_HITACHI_PERSONA)) 230 return 0; 231 232 if (strcmp(cfp->cf_name, "psh3lcd") != 0) 233 return 0; 234 235 bcr0 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG0); 236 if (bcr0 == 0) { 237 if (psh3lcd_xx0_bcd_get() == BCD_NO_MATCH) 238 return 0; 239 } else { 240 if (psh3lcd_x0_bcd_get() == BCD_NO_MATCH) 241 return 0; 242 } 243 244 return 1; 245 } 246 247 /* ARGSUSED */ 248 static void 249 psh3lcd_attach(device_t parent __unused, device_t self, void *aux __unused) 250 { 251 struct psh3lcd_softc *sc = device_private(self); 252 uint8_t bcr0, bcr1, bcr2; 253 254 sc->sc_dev = self; 255 256 bcr0 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG0); 257 bcr1 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG1); 258 bcr2 = _reg_read_1(PSH3LCD_BRIGHTNESS_REG2); 259 if (bcr0 == 0) { 260 sc->sc_set_brightness = psh3lcd_xx0_set_brightness; 261 sc->sc_brightness = psh3lcd_xx0_bcd_get(); 262 sc->sc_brightness_max = PSH3LCD_XX0_BRIGHTNESS_MAX; 263 } else { 264 sc->sc_set_brightness = psh3lcd_x0_set_brightness; 265 sc->sc_brightness = psh3lcd_x0_bcd_get(); 266 sc->sc_brightness_max = PSH3LCD_X0_BRIGHTNESS_MAX; 267 } 268 aprint_naive("\n"); 269 aprint_normal(": brightness %d\n", sc->sc_brightness); 270 271 /* LCD contrast hooks */ 272 config_hook(CONFIG_HOOK_GET, 273 CONFIG_HOOK_CONTRAST_MAX, CONFIG_HOOK_SHARE, psh3lcd_param, sc); 274 config_hook(CONFIG_HOOK_GET, 275 CONFIG_HOOK_CONTRAST, CONFIG_HOOK_SHARE, psh3lcd_param, sc); 276 config_hook(CONFIG_HOOK_SET, 277 CONFIG_HOOK_CONTRAST, CONFIG_HOOK_SHARE, psh3lcd_param, sc); 278 279 /* LCD brightness hooks */ 280 config_hook(CONFIG_HOOK_GET, 281 CONFIG_HOOK_BRIGHTNESS_MAX, CONFIG_HOOK_SHARE, psh3lcd_param, sc); 282 config_hook(CONFIG_HOOK_GET, 283 CONFIG_HOOK_BRIGHTNESS, CONFIG_HOOK_SHARE, psh3lcd_param, sc); 284 config_hook(CONFIG_HOOK_SET, 285 CONFIG_HOOK_BRIGHTNESS, CONFIG_HOOK_SHARE, psh3lcd_param, sc); 286 287 /* LCD on/off hook */ 288 config_hook(CONFIG_HOOK_POWERCONTROL, 289 CONFIG_HOOK_POWERCONTROL_LCD, CONFIG_HOOK_SHARE, psh3lcd_power, sc); 290 291 /* XXX: TODO: don't rely on CONFIG_HOOK_POWERCONTROL_LCD */ 292 if (!pmf_device_register(self, NULL, NULL)) 293 aprint_error_dev(self, "unable to establish power handler\n"); 294 } 295 296 297 static int 298 psh3lcd_param(void *ctx, int type, long id, void *msg) 299 { 300 struct psh3lcd_softc *sc = ctx; 301 int value; 302 303 switch (type) { 304 case CONFIG_HOOK_GET: 305 switch (id) { 306 case CONFIG_HOOK_CONTRAST: 307 *(int *)msg = PSH3LCD_CONTRAST; 308 return 0; 309 310 case CONFIG_HOOK_CONTRAST_MAX: 311 *(int *)msg = PSH3LCD_CONTRAST_MAX; 312 return 0; 313 314 case CONFIG_HOOK_BRIGHTNESS: 315 *(int *)msg = sc->sc_brightness; 316 return 0; 317 318 case CONFIG_HOOK_BRIGHTNESS_MAX: 319 *(int *)msg = sc->sc_brightness_max; 320 return 0; 321 } 322 break; 323 324 case CONFIG_HOOK_SET: 325 value = *(int *)msg; 326 327 switch (id) { 328 case CONFIG_HOOK_CONTRAST: 329 if (value != PSH3LCD_CONTRAST_UP && 330 value != PSH3LCD_CONTRAST_DOWN) 331 return EINVAL; 332 psh3lcd_set_contrast(value); 333 return 0; 334 335 case CONFIG_HOOK_BRIGHTNESS: 336 if (value < 0) 337 value = 0; 338 if (value > sc->sc_brightness_max) 339 value = sc->sc_brightness_max; 340 sc->sc_brightness = value; 341 sc->sc_set_brightness(sc->sc_brightness); 342 return 0; 343 } 344 break; 345 } 346 347 return EINVAL; 348 } 349 350 351 static int 352 psh3lcd_power(void *ctx, int type, long id, void *msg) 353 { 354 struct psh3lcd_softc *sc = ctx; 355 int on; 356 357 if (type != CONFIG_HOOK_POWERCONTROL || 358 id != CONFIG_HOOK_POWERCONTROL_LCD) 359 return EINVAL; 360 361 on = (int)msg; 362 if (on) 363 sc->sc_set_brightness(sc->sc_brightness); 364 else 365 sc->sc_set_brightness(sc->sc_brightness_max + 1); 366 367 return 0; 368 } 369