/* $NetBSD: tx39spi.c,v 1.5 2012/10/27 17:17:54 chs Exp $ */ /*- * Copyright (c) 2005 HAMAJIMA Katsuomi. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Toshiba TX3912/3922 SPI module */ #include __KERNEL_RCSID(0, "$NetBSD: tx39spi.c,v 1.5 2012/10/27 17:17:54 chs Exp $"); #include #include #include #include #include #include #include #include "locators.h" struct tx39spi_softc { tx_chipset_tag_t sc_tc; int sc_attached; }; static int tx39spi_match(device_t, cfdata_t, void *); static void tx39spi_attach(device_t, device_t, void *); static int tx39spi_search(device_t, cfdata_t, const int *, void *); static int tx39spi_print(void *, const char *); #ifndef USE_POLL static int tx39spi_intr(void *); #endif CFATTACH_DECL_NEW(tx39spi, sizeof(struct tx39spi_softc), tx39spi_match, tx39spi_attach, NULL, NULL); int tx39spi_match(device_t parent, cfdata_t cf, void *aux) { return (ATTACH_NORMAL); } void tx39spi_attach(device_t parent, device_t self, void *aux) { struct txsim_attach_args *ta = aux; struct tx39spi_softc *sc = device_private(self); tx_chipset_tag_t tc = sc->sc_tc = ta->ta_tc; txreg_t reg; reg = tx_conf_read(tc, TX39_SPICTRL_REG); reg &= ~(TX39_SPICTRL_ENSPI); tx_conf_write(tc, TX39_SPICTRL_REG, reg); tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_SPIBUFAVAILINT); tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_SPIERRINT); tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_SPIRCVINT); tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_SPIEMPTYINT); #ifndef USE_POLL tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_SPI), IST_EDGE, IPL_TTY, tx39spi_intr, sc); #endif printf("\n"); config_search_ia(tx39spi_search, self, "txspiif", tx39spi_print); } int tx39spi_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct tx39spi_softc *sc = device_private(parent); struct txspi_attach_args sa; sa.sa_tc = sc->sc_tc; sa.sa_slot = cf->cf_loc[TXSPIIFCF_SLOT]; if (sa.sa_slot == TXSPIIFCF_SLOT_DEFAULT) { printf("tx39spi_search: wildcarded slot, skipping\n"); return 0; } if (!(sc->sc_attached & (1 << sa.sa_slot)) && /* not attached slot */ config_match(parent, cf, &sa)) { config_attach(parent, cf, &sa, tx39spi_print); sc->sc_attached |= (1 << sa.sa_slot); } return 0; } int tx39spi_print(void *aux, const char *pnp) { struct txspi_attach_args *sa = aux; aprint_normal(" slot %d", sa->sa_slot); return (QUIET); } #ifndef USE_POLL int tx39spi_intr(void *) { return 0; } #endif int tx39spi_is_empty(struct tx39spi_softc *sc) { return tx_conf_read(sc->sc_tc, TX39_SPICTRL_REG) & (TX39_SPICTRL_EMPTY); } void tx39spi_put_word(struct tx39spi_softc *sc, int w) { tx_chipset_tag_t tc = sc->sc_tc; #ifdef USE_POLL while(!(tx_conf_read(tc, TX39_INTRSTATUS5_REG) & TX39_INTRSTATUS5_SPIBUFAVAILINT)) ; tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_SPIBUFAVAILINT); #endif tx_conf_write(tc, TX39_SPITXHOLD_REG , w & 0xffff); } int tx39spi_get_word(struct tx39spi_softc *sc) { tx_chipset_tag_t tc = sc->sc_tc; #ifdef USE_POLL while(!(tx_conf_read(tc, TX39_INTRSTATUS5_REG) & TX39_INTRSTATUS5_SPIRCVINT)) ; tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_SPIRCVINT); #endif return tx_conf_read(tc, TX39_SPIRXHOLD_REG) & 0xffff; } void tx39spi_enable(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); if (n) reg |= (TX39_SPICTRL_ENSPI); else reg &= ~(TX39_SPICTRL_ENSPI); tx_conf_write(tc, TX39_SPICTRL_REG, reg); } void tx39spi_delayval(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); tx_conf_write(tc, TX39_SPICTRL_REG, TX39_SPICTRL_DELAYVAL_SET(reg, n)); } void tx39spi_baudrate(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); tx_conf_write(tc, TX39_SPICTRL_REG, TX39_SPICTRL_BAUDRATE_SET(reg, n)); } void tx39spi_word(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); if (n) reg |= (TX39_SPICTRL_WORD); else reg &= ~(TX39_SPICTRL_WORD); tx_conf_write(tc, TX39_SPICTRL_REG, reg); } void tx39spi_phapol(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); if (n) reg |= (TX39_SPICTRL_PHAPOL); else reg &= ~(TX39_SPICTRL_PHAPOL); tx_conf_write(tc, TX39_SPICTRL_REG, reg); } void tx39spi_clkpol(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); if (n) reg |= (TX39_SPICTRL_CLKPOL); else reg &= ~(TX39_SPICTRL_CLKPOL); tx_conf_write(tc, TX39_SPICTRL_REG, reg); } void tx39spi_lsb(struct tx39spi_softc *sc, int n) { tx_chipset_tag_t tc = sc->sc_tc; txreg_t reg = tx_conf_read(tc, TX39_SPICTRL_REG); if (n) reg |= (TX39_SPICTRL_LSB); else reg &= ~(TX39_SPICTRL_LSB); tx_conf_write(tc, TX39_SPICTRL_REG, reg); }