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tx39sib.c revision 1.15 
      1 /*	$NetBSD: tx39sib.c,v 1.15 2005/06/30 17:03:53 drochner Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * TX39 SIB (Serial Interface Bus) module.
     41  */
     42 
     43 #include <sys/cdefs.h>
     44 __KERNEL_RCSID(0, "$NetBSD: tx39sib.c,v 1.15 2005/06/30 17:03:53 drochner Exp $");
     45 
     46 #undef TX39SIBDEBUG
     47 
     48 #include <sys/param.h>
     49 #include <sys/systm.h>
     50 #include <sys/device.h>
     51 
     52 #include <machine/bus.h>
     53 #include <machine/intr.h>
     54 
     55 #include <hpcmips/tx/tx39var.h>
     56 #include <hpcmips/tx/tx39icureg.h>
     57 #include <hpcmips/tx/tx39sibvar.h>
     58 #include <hpcmips/tx/tx39sibreg.h>
     59 
     60 #include "locators.h"
     61 
     62 #ifdef TX39SIBDEBUG
     63 int	tx39sibdebug = 0;
     64 #define	DPRINTF(arg) if (tx39sibdebug) printf arg;
     65 #else
     66 #define	DPRINTF(arg)
     67 #endif
     68 
     69 int	tx39sib_match(struct device *, struct cfdata *, void *);
     70 void	tx39sib_attach(struct device *, struct device *, void *);
     71 int	tx39sib_print(void *, const char *);
     72 int	tx39sib_search(struct device *, struct cfdata *,
     73 		       const locdesc_t *, void *);
     74 
     75 #define TX39_CLK2X	18432000
     76 const int sibsclk_divide_table[8] = {
     77 	2, 3, 4, 5, 6, 8, 10, 12
     78 };
     79 
     80 struct tx39sib_param {
     81 	/* SIB clock rate */
     82 	int sp_clock;
     83 /*
     84  *	SIBMCLK = 18.432MHz = (CLK2X /4)
     85  *	SIBSCLK = SIBMCLK / sp_clock
     86  *	sp_clock	start	end	divide module
     87  *	0		7	8	2
     88  *	1		6	8	3
     89  *	2		6	9	4
     90  *	3		5	9	5
     91  *	4		5	10	6
     92  *	5		4	11	8
     93  *	6		3	12	10
     94  *	7		2	13	12
     95  */
     96 	/* sampling rate */
     97 	int sp_snd_rate; /* SNDFSDIV + 1 */
     98 	int sp_tel_rate; /* TELFSDIV + 1 */
     99 /*
    100  *	Fs = (SIBSCLK * 2) / ((FSDIV + 1) * 64)
    101  *	FSDIV + 1	sampling rate
    102  *	15		19.2k		(1.6% error vs. CD-XA)
    103  *	13		22.154k		(0.47% error vs. CD-Audio)
    104  *	22		7.85k		(1.8% error vs. 8k)
    105  */
    106 	/* data format 16/8bit */
    107 	int sp_sf0sndmode;
    108 	int sp_sf0telmode;
    109 };
    110 
    111 struct tx39sib_param tx39sib_param_default_3912 = {
    112 	0,			/* SIBSCLK = 9.216MHz (div2) */
    113 #if 0 /* setting sample */
    114 	40,			/* audio: 7.2kHz */
    115 	26,			/* audio: CD-Audio(/4) 11.077kHz*/
    116 	6,			/* audio: 48kHz */
    117 #endif
    118 	13,			/* audio: CD-Audio(/2 = 22.050) 22.154kHz*/
    119 	40,			/* telecom: 7.2kHz */
    120 	TX39_SIBCTRL_SND16,	/* Audio 16bit mono */
    121 	TX39_SIBCTRL_TEL16	/* Telecom 16bit mono */
    122 };
    123 
    124 struct tx39sib_param tx39sib_param_default_3922 = {
    125 	7,			/* SIBSCLK = 9.216MHz (div1) */
    126 	13,			/* audio: CD-Audio(/2 = 22.050) 22.154kHz*/
    127 	40,			/* telecom: 7.2kHz */
    128 	TX39_SIBCTRL_SND16,	/* Audio 16bit mono */
    129 	TX39_SIBCTRL_TEL16	/* Telecom 16bit mono */
    130 };
    131 
    132 struct tx39sib_softc {
    133 	struct	device sc_dev;
    134 	tx_chipset_tag_t sc_tc;
    135 
    136 	struct tx39sib_param sc_param;
    137 	int sc_attached;
    138 };
    139 
    140 __inline int	__txsibsf0_ready(tx_chipset_tag_t);
    141 #ifdef TX39SIBDEBUG
    142 void	tx39sib_dump(struct tx39sib_softc *);
    143 #endif
    144 
    145 CFATTACH_DECL(tx39sib, sizeof(struct tx39sib_softc),
    146     tx39sib_match, tx39sib_attach, NULL, NULL);
    147 
    148 int
    149 tx39sib_match(struct device *parent, struct cfdata *cf, void *aux)
    150 {
    151 	return (ATTACH_FIRST);
    152 }
    153 
    154 void
    155 tx39sib_attach(struct device *parent, struct device *self, void *aux)
    156 {
    157 	struct txsim_attach_args *ta = aux;
    158 	struct tx39sib_softc *sc = (void*)self;
    159 	tx_chipset_tag_t tc;
    160 
    161 	sc->sc_tc = tc = ta->ta_tc;
    162 
    163 	/* set default param */
    164 #ifdef TX391X
    165 	sc->sc_param = tx39sib_param_default_3912;
    166 #endif /* TX391X */
    167 #ifdef TX392X
    168 	sc->sc_param = tx39sib_param_default_3922;
    169 #endif /* TX392X */
    170 
    171 #define MHZ(a) ((a) / 1000000), (((a) % 1000000) / 1000)
    172 	printf(": %d.%03d MHz", MHZ(tx39sib_clock(self)));
    173 
    174 	printf("\n");
    175 #ifdef TX39SIBDEBUG
    176 	if (tx39sibdebug)
    177 		tx39sib_dump(sc);
    178 #endif
    179 	/* enable subframe0 */
    180 	tx39sib_enable1(self);
    181 	/* enable SIB */
    182 	tx39sib_enable2(self);
    183 
    184 #ifdef TX39SIBDEBUG
    185 	if (tx39sibdebug)
    186 		tx39sib_dump(sc);
    187 #endif
    188 
    189 	config_search_ia(tx39sib_search, self, "txsibif", tx39sib_print);
    190 }
    191 
    192 void
    193 tx39sib_enable1(struct device *dev)
    194 {
    195 	struct tx39sib_softc *sc = (void*)dev;
    196 	struct tx39sib_param *param = &sc->sc_param;
    197 	tx_chipset_tag_t tc = sc->sc_tc;
    198 
    199 	txreg_t reg;
    200 
    201 	/* disable SIB */
    202 	tx39sib_disable(dev);
    203 
    204 	/* setup */
    205 	reg = 0;
    206 	/*  SIB clock rate */
    207 	reg = TX39_SIBCTRL_SCLKDIV_SET(reg, param->sp_clock);
    208 	/*  sampling rate (sound) */
    209 	reg = TX39_SIBCTRL_SNDFSDIV_SET(reg, param->sp_snd_rate - 1);
    210 	/*  sampling rate (telecom) */
    211 	reg = TX39_SIBCTRL_TELFSDIV_SET(reg, param->sp_tel_rate - 1);
    212 	/*  data format (8/16bit) */
    213 	reg |= param->sp_sf0sndmode;
    214 	reg |= param->sp_sf0telmode;
    215 	tx_conf_write(tc, TX39_SIBCTRL_REG, reg);
    216 
    217 	/* DMA */
    218 	reg = tx_conf_read(tc, TX39_SIBDMACTRL_REG);
    219 	reg &= ~(TX39_SIBDMACTRL_ENDMARXSND |
    220 	    TX39_SIBDMACTRL_ENDMATXSND |
    221 	    TX39_SIBDMACTRL_ENDMARXTEL |
    222 	    TX39_SIBDMACTRL_ENDMATXTEL);
    223 	tx_conf_write(tc, TX39_SIBDMACTRL_REG, reg);
    224 
    225 	/*
    226 	 * Enable subframe0 (BETTY)
    227 	 */
    228 	reg = tx_conf_read(tc, TX39_SIBCTRL_REG);
    229 	reg |= TX39_SIBCTRL_ENSF0;
    230 	tx_conf_write(tc, TX39_SIBCTRL_REG, reg);
    231 }
    232 
    233 void
    234 tx39sib_enable2(struct device *dev)
    235 {
    236 	struct tx39sib_softc *sc = (void*)dev;
    237 	tx_chipset_tag_t tc = sc->sc_tc;
    238 	txreg_t reg;
    239 
    240 	reg = tx_conf_read(tc, TX39_SIBCTRL_REG);
    241 	reg |= TX39_SIBCTRL_ENSIB;
    242 	tx_conf_write(tc, TX39_SIBCTRL_REG, reg);
    243 }
    244 
    245 void
    246 tx39sib_disable(struct device *dev)
    247 {
    248 	struct tx39sib_softc *sc = (void*)dev;
    249 	tx_chipset_tag_t tc = sc->sc_tc;
    250 	txreg_t reg;
    251 	/* disable codec side */
    252 	/* notyet */
    253 
    254 	/* disable TX39 side */
    255 	reg = tx_conf_read(tc, TX39_SIBCTRL_REG);
    256 	reg &= ~(TX39_SIBCTRL_ENTEL | TX39_SIBCTRL_ENSND);
    257 	tx_conf_write(tc, TX39_SIBCTRL_REG, reg);
    258 
    259 	/*
    260 	 * Disable subframe0/1 (BETTY/external codec)
    261 	 */
    262 	reg = tx_conf_read(tc, TX39_SIBCTRL_REG);
    263 	reg &= ~TX39_SIBCTRL_ENSF0;
    264 	reg &= ~(TX39_SIBCTRL_ENSF1 | TX39_SIBCTRL_SELTELSF1 |
    265 	    TX39_SIBCTRL_SELSNDSF1);
    266 	tx_conf_write(tc, TX39_SIBCTRL_REG, reg);
    267 
    268 	/* disable TX39SIB module */
    269 	reg &= ~TX39_SIBCTRL_ENSIB;
    270 	tx_conf_write(tc, TX39_SIBCTRL_REG, reg);
    271 }
    272 
    273 int
    274 tx39sib_clock(struct device *dev)
    275 {
    276 	struct tx39sib_softc *sc = (void*)dev;
    277 
    278 	return (TX39_CLK2X / sibsclk_divide_table[sc->sc_param.sp_clock]);
    279 }
    280 
    281 int
    282 tx39sib_search(struct device *parent, struct cfdata *cf,
    283 	       const locdesc_t *ldesc, void *aux)
    284 {
    285 	struct tx39sib_softc *sc = (void*)parent;
    286 	struct txsib_attach_args sa;
    287 
    288 	sa.sa_tc	= sc->sc_tc;
    289 	sa.sa_slot	= cf->cf_loc[TXSIBIFCF_SLOT];
    290 	sa.sa_snd_rate	= sc->sc_param.sp_snd_rate;
    291 	sa.sa_tel_rate	= sc->sc_param.sp_tel_rate;
    292 
    293 	if (sa.sa_slot == TXSIBIFCF_SLOT_DEFAULT) {
    294 		printf("tx39sib_search: wildcarded slot, skipping\n");
    295 		return (0);
    296 	}
    297 
    298 	if (!(sc->sc_attached & (1 << sa.sa_slot)) &&/* not attached slot */
    299 	    config_match(parent, cf, &sa)) {
    300 		config_attach(parent, cf, &sa, tx39sib_print);
    301 		sc->sc_attached |= (1 << sa.sa_slot);
    302 	}
    303 
    304 	return (0);
    305 }
    306 
    307 int
    308 tx39sib_print(void *aux, const char *pnp)
    309 {
    310 	struct txsib_attach_args *sa = aux;
    311 
    312 	aprint_normal(" slot %d", sa->sa_slot);
    313 
    314 	return (QUIET);
    315 }
    316 
    317 /*
    318  * sync access method. don't use runtime.
    319  */
    320 
    321 __inline__ int
    322 __txsibsf0_ready(tx_chipset_tag_t tc)
    323 {
    324 	int i;
    325 
    326 	tx_conf_write(tc, TX39_INTRSTATUS1_REG, TX39_INTRSTATUS1_SIBSF0INT);
    327 	for (i = 0; (!(tx_conf_read(tc, TX39_INTRSTATUS1_REG) &
    328 	    TX39_INTRSTATUS1_SIBSF0INT)) && i < 1000; i++) {
    329 		if (i > 100 && !(i % 100)) {
    330 			printf("sf0 busy loop: retry count %d\n", i);
    331 		}
    332 	}
    333 
    334 	if (i >= 1000) {
    335 		printf("sf0 busy\n");
    336 		return (0);
    337 	}
    338 
    339 	return (1);
    340 }
    341 
    342 void
    343 txsibsf0_reg_write(tx_chipset_tag_t tc, int addr, u_int16_t val)
    344 {
    345 	txreg_t reg;
    346 
    347 	reg = txsibsf0_read(tc, addr);
    348 	reg |= TX39_SIBSF0_WRITE;
    349 	TX39_SIBSF0_REGDATA_CLR(reg);
    350 	reg = TX39_SIBSF0_REGDATA_SET(reg, val);
    351 
    352 	__txsibsf0_ready(tc);
    353 	tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    354 }
    355 
    356 u_int16_t
    357 txsibsf0_reg_read(tx_chipset_tag_t tc, int addr)
    358 {
    359 	return (TX39_SIBSF0_REGDATA(txsibsf0_read(tc, addr)));
    360 }
    361 
    362 u_int32_t
    363 txsibsf0_read(tx_chipset_tag_t tc, int addr)
    364 {
    365 	txreg_t reg;
    366 	int retry = 3;
    367 
    368 	do {
    369 		reg = TX39_SIBSF0_REGADDR_SET(0, addr);
    370 		__txsibsf0_ready(tc);
    371 		tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    372 
    373 		__txsibsf0_ready(tc);
    374 		reg = tx_conf_read(tc, TX39_SIBSF0STAT_REG);
    375 
    376 	} while ((TX39_SIBSF0_REGADDR(reg) != addr) && --retry > 0);
    377 
    378 	if (retry <= 0)
    379 		printf("txsibsf0_read: command failed\n");
    380 
    381 	return (reg);
    382 }
    383 
    384 #ifdef TX39SIBDEBUG
    385 #define ISSETPRINT_CTRL(r, m)						\
    386 	dbg_bitmask_print(r, TX39_SIBCTRL_##m, #m)
    387 #define ISSETPRINT_DMACTRL(r, m)					\
    388 	dbg_bitmask_print(r, TX39_SIBDMACTRL_##m, #m)
    389 
    390 void
    391 tx39sib_dump(struct tx39sib_softc *sc)
    392 {
    393 	tx_chipset_tag_t tc = sc->sc_tc;
    394 	txreg_t reg;
    395 
    396 	reg = tx_conf_read(tc, TX39_SIBCTRL_REG);
    397 	ISSETPRINT_CTRL(reg, SIBIRQ);
    398 	ISSETPRINT_CTRL(reg, ENCNTTEST);
    399 	ISSETPRINT_CTRL(reg, ENDMATEST);
    400 	ISSETPRINT_CTRL(reg, SNDMONO);
    401 	ISSETPRINT_CTRL(reg, RMONOSNDIN);
    402 	ISSETPRINT_CTRL(reg, TEL16);
    403 	ISSETPRINT_CTRL(reg, SND16);
    404 	ISSETPRINT_CTRL(reg, SELTELSF1);
    405 	ISSETPRINT_CTRL(reg, SELSNDSF1);
    406 	ISSETPRINT_CTRL(reg, ENTEL);
    407 	ISSETPRINT_CTRL(reg, ENSND);
    408 	ISSETPRINT_CTRL(reg, SIBLOOP);
    409 	ISSETPRINT_CTRL(reg, ENSF1);
    410 	ISSETPRINT_CTRL(reg, ENSF0);
    411 	ISSETPRINT_CTRL(reg, ENSIB);
    412 	printf("\n");
    413 	printf("SCLKDIV %d\n", TX39_SIBCTRL_SCLKDIV(reg));
    414 	printf("TELFSDIV %d\n", TX39_SIBCTRL_TELFSDIV(reg));
    415 	printf("SNDFSDIV %d\n", TX39_SIBCTRL_SNDFSDIV(reg));
    416 
    417 	reg = tx_conf_read(tc, TX39_SIBDMACTRL_REG);
    418 	ISSETPRINT_DMACTRL(reg, SNDBUFF1TIME);
    419 	ISSETPRINT_DMACTRL(reg, SNDDMALOOP);
    420 	ISSETPRINT_DMACTRL(reg, ENDMARXSND);
    421 	ISSETPRINT_DMACTRL(reg, ENDMATXSND);
    422 	ISSETPRINT_DMACTRL(reg, TELBUFF1TIME);
    423 	ISSETPRINT_DMACTRL(reg, TELDMALOOP);
    424 	ISSETPRINT_DMACTRL(reg, ENDMARXTEL);
    425 	ISSETPRINT_DMACTRL(reg, ENDMATXTEL);
    426 	printf("\n");
    427 	printf("SNDDMAPTR %d\n", TX39_SIBDMACTRL_TELDMAPTR(reg));
    428 	printf("TELDMAPTR %d\n", TX39_SIBDMACTRL_SNDDMAPTR(reg));
    429 
    430 }
    431 #endif /* TX39SIBDEBUG */
    432