/* $OpenBSD: rkiis.c,v 1.4 2022/10/28 15:09:45 kn Exp $ */ /* $NetBSD: rk_i2s.c,v 1.3 2020/02/29 05:51:10 isaki Exp $ */ /*- * Copyright (c) 2019 Jared McNeill * 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 ``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 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define RK_I2S_FIFO_DEPTH 32 #define RK_I2S_SAMPLE_RATE 48000 #define I2S_TXCR 0x00 #define TXCR_RCNT_MASK (0x3f << 17) #define TXCR_RCNT_SHIFT 17 #define TXCR_TCSR_MASK (0x3 << 15) #define TXCR_TCSR_SHIFT 15 #define TXCR_HWT (1 << 14) #define TXCR_SJM (1 << 12) #define TXCR_FBM (1 << 11) #define TXCR_IBM_MASK (0x3 << 9) #define TXCR_IBM_SHIFT 9 #define TXCR_PBM_MASK (0x3 << 7) #define TXCR_PBM_SHIFT 7 #define TXCR_TFS (1 << 5) #define TXCR_VDW_MASK (0x1f << 0) #define TXCR_VDW_SHIFT 0 #define I2S_RXCR 0x04 #define RXCR_RCSR_MASK (0x3 << 15) #define RXCR_RCSR_SHIFT 15 #define RXCR_HWT (1 << 14) #define RXCR_SJM (1 << 12) #define RXCR_FBM (1 << 11) #define RXCR_IBM_MASK (0x3 << 9) #define RXCR_IBM_SHIFT 9 #define RXCR_PBM_MASK (0x3 << 7) #define RXCR_PBM_SHIFT 7 #define RXCR_TFS (1 << 5) #define RXCR_VDW_MASK (0x1f << 0) #define RXCR_VDW_SHIFT 0 #define I2S_CKR 0x08 #define CKR_TRCM_MASK (0x3 << 28) #define CKR_TRCM_SHIFT 28 #define CKR_MSS (1 << 27) #define CKR_CKP (1 << 26) #define CKR_RLP (1 << 25) #define CKR_TLP (1 << 24) #define CKR_MDIV_MASK (0xff << 16) #define CKR_MDIV_SHIFT 16 #define CKR_RSD_MASK (0xff << 8) #define CKR_RSD_SHIFT 8 #define CKR_TSD_MASK (0xff << 0) #define CKR_TSD_SHIFT 0 #define I2S_TXFIFOLR 0x0c #define TXFIFOLR_TFL_MASK(n) (0x3f << ((n) * 6)) #define TXFIFOLR_TFL_SHIFT(n) ((n) * 6) #define I2S_DMACR 0x10 #define DMACR_RDE (1 << 24) #define DMACR_RDL_MASK (0x1f << 16) #define DMACR_RDL_SHIFT 16 #define DMACR_TDE (1 << 8) #define DMACR_TDL_MASK (0x1f << 0) #define DMACR_TDL_SHIFT 0 #define I2S_INTCR 0x14 #define INTCR_RFT_MASK (0x1f << 20) #define INTCR_RFT_SHIFT 20 #define INTCR_RXOIC (1 << 18) #define INTCR_RXOIE (1 << 17) #define INTCR_RXFIE (1 << 16) #define INTCR_TFT_MASK (0x1f << 4) #define INTCR_TFT_SHIFT 4 #define INTCR_TXUIC (1 << 2) #define INTCR_TXUIE (1 << 1) #define INTCR_TXEIE (1 << 0) #define I2S_INTSR 0x18 #define INTSR_RXOI (1 << 17) #define INTSR_RXFI (1 << 16) #define INTSR_TXUI (1 << 1) #define INTSR_TXEI (1 << 0) #define I2S_XFER 0x1c #define XFER_RXS (1 << 1) #define XFER_TXS (1 << 0) #define I2S_CLR 0x20 #define CLR_RXC (1 << 1) #define CLR_TXC (1 << 0) #define I2S_TXDR 0x24 #define I2S_RXDR 0x28 #define I2S_RXFIFOLR 0x2c #define RXFIFOLR_RFL_MASK(n) (0x3f << ((n) * 6)) #define RXFIFOLR_RFL_SHIFT(n) ((n) * 6) #define HREAD4(sc, reg) \ (bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg))) #define HWRITE4(sc, reg, val) \ bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) #define HSET4(sc, reg, bits) \ HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits)) #define HCLR4(sc, reg, bits) \ HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits)) int rkiis_match(struct device *, void *, void *); void rkiis_attach(struct device *, struct device *, void *); int rkiis_intr(void *); int rkiis_set_format(void *, uint32_t, uint32_t, uint32_t); int rkiis_set_sysclk(void *, uint32_t); int rkiis_open(void *, int); int rkiis_set_params(void *, int, int, struct audio_params *, struct audio_params *); void *rkiis_allocm(void *, int, size_t, int, int); void rkiis_freem(void *, void *, int); int rkiis_trigger_output(void *, void *, void *, int, void (*)(void *), void *, struct audio_params *); int rkiis_trigger_input(void *, void *, void *, int, void (*)(void *), void *, struct audio_params *); int rkiis_halt_output(void *); int rkiis_halt_input(void *); struct rkiis_config { bus_size_t oe_reg; uint32_t oe_mask; uint32_t oe_shift; uint32_t oe_val; }; struct rkiis_config rk3399_i2s_config = { .oe_reg = 0xe220, .oe_mask = 0x7, .oe_shift = 11, .oe_val = 0x7, }; struct rkiis_chan { uint32_t *ch_start; uint32_t *ch_end; uint32_t *ch_cur; int ch_blksize; int ch_resid; void (*ch_intr)(void *); void *ch_intrarg; }; struct rkiis_softc { struct device sc_dev; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; void *sc_ih; int sc_node; struct rkiis_config *sc_conf; struct rkiis_chan sc_pchan; struct rkiis_chan sc_rchan; uint32_t sc_active; struct dai_device sc_dai; }; const struct audio_hw_if rkiis_hw_if = { .open = rkiis_open, .set_params = rkiis_set_params, .allocm = rkiis_allocm, .freem = rkiis_freem, .trigger_output = rkiis_trigger_output, .trigger_input = rkiis_trigger_input, .halt_output = rkiis_halt_output, .halt_input = rkiis_halt_input, }; const struct cfattach rkiis_ca = { sizeof (struct rkiis_softc), rkiis_match, rkiis_attach }; struct cfdriver rkiis_cd = { NULL, "rkiis", DV_DULL }; int rkiis_match(struct device *parent, void *match, void *aux) { struct fdt_attach_args *faa = aux; return OF_is_compatible(faa->fa_node, "rockchip,rk3399-i2s"); } void rkiis_attach(struct device *parent, struct device *self, void *aux) { struct rkiis_softc *sc = (struct rkiis_softc *)self; struct fdt_attach_args *faa = aux; struct regmap *rm; uint32_t grf, val; if (faa->fa_nreg < 1) { printf(": no registers\n"); return; } sc->sc_iot = faa->fa_iot; sc->sc_node = faa->fa_node; sc->sc_conf = &rk3399_i2s_config; if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0, &sc->sc_ioh)) { printf(": can't map registers\n"); return; } pinctrl_byname(sc->sc_node, "default"); clock_enable_all(sc->sc_node); grf = OF_getpropint(sc->sc_node, "rockchip,grf", 0); rm = regmap_byphandle(grf); if (rm && sc->sc_conf->oe_mask) { val = sc->sc_conf->oe_val << sc->sc_conf->oe_shift; val |= (sc->sc_conf->oe_mask << sc->sc_conf->oe_shift) << 16; regmap_write_4(rm, sc->sc_conf->oe_reg, val); } sc->sc_ih = fdt_intr_establish(faa->fa_node, IPL_AUDIO | IPL_MPSAFE, rkiis_intr, sc, sc->sc_dev.dv_xname); if (sc->sc_ih == NULL) { printf(": can't establish interrupt\n"); goto unmap; } printf("\n"); sc->sc_dai.dd_node = faa->fa_node; sc->sc_dai.dd_cookie = sc; sc->sc_dai.dd_hw_if = &rkiis_hw_if; sc->sc_dai.dd_set_format = rkiis_set_format; sc->sc_dai.dd_set_sysclk = rkiis_set_sysclk; dai_register(&sc->sc_dai); return; unmap: bus_space_unmap(sc->sc_iot, sc->sc_ioh, faa->fa_reg[0].size); } int rkiis_intr(void *cookie) { struct rkiis_softc *sc = cookie; struct rkiis_chan *pch = &sc->sc_pchan; #if notyet struct rkiis_chan *rch = &sc->sc_rchan; #endif uint32_t sr, val; int fifolr; mtx_enter(&audio_lock); sr = HREAD4(sc, I2S_INTSR); if ((sr & INTSR_RXFI) != 0) { #if notyet val = HREAD4(sc, I2S_RXFIFOLR); fifolr = val & RXFIFOLR_RFL_MASK(0); fifolr >>= RXFIFOLR_RFL_SHIFT(0); while (fifolr > 0) { *rch->ch_data = HREAD4(sc, I2S_RXDR); rch->ch_data++; rch->ch_resid -= 4; if (rch->ch_resid == 0) rch->ch_intr(rch->ch_intrarg); --fifolr; } #endif } if ((sr & INTSR_TXEI) != 0) { val = HREAD4(sc, I2S_TXFIFOLR); fifolr = val & TXFIFOLR_TFL_MASK(0); fifolr >>= TXFIFOLR_TFL_SHIFT(0); fifolr = min(fifolr, RK_I2S_FIFO_DEPTH); while (fifolr < RK_I2S_FIFO_DEPTH - 1) { HWRITE4(sc, I2S_TXDR, *pch->ch_cur); pch->ch_cur++; if (pch->ch_cur == pch->ch_end) pch->ch_cur = pch->ch_start; pch->ch_resid -= 4; if (pch->ch_resid == 0) { pch->ch_intr(pch->ch_intrarg); pch->ch_resid = pch->ch_blksize; } ++fifolr; } } mtx_leave(&audio_lock); return 1; } int rkiis_set_format(void *cookie, uint32_t fmt, uint32_t pol, uint32_t clk) { struct rkiis_softc *sc = cookie; uint32_t txcr, rxcr, ckr; txcr = HREAD4(sc, I2S_TXCR); rxcr = HREAD4(sc, I2S_RXCR); ckr = HREAD4(sc, I2S_CKR); txcr &= ~(TXCR_IBM_MASK|TXCR_PBM_MASK|TXCR_TFS); rxcr &= ~(RXCR_IBM_MASK|RXCR_PBM_MASK|RXCR_TFS); switch (fmt) { case DAI_FORMAT_I2S: txcr |= 0 << TXCR_IBM_SHIFT; rxcr |= 0 << RXCR_IBM_SHIFT; break; case DAI_FORMAT_LJ: txcr |= 1 << TXCR_IBM_SHIFT; rxcr |= 1 << RXCR_IBM_SHIFT; break; case DAI_FORMAT_RJ: txcr |= 2 << TXCR_IBM_SHIFT; rxcr |= 2 << RXCR_IBM_SHIFT; break; case DAI_FORMAT_DSPA: txcr |= 0 << TXCR_PBM_SHIFT; txcr |= TXCR_TFS; rxcr |= 0 << RXCR_PBM_SHIFT; txcr |= RXCR_TFS; break; case DAI_FORMAT_DSPB: txcr |= 1 << TXCR_PBM_SHIFT; txcr |= TXCR_TFS; rxcr |= 1 << RXCR_PBM_SHIFT; txcr |= RXCR_TFS; break; default: return EINVAL; } HWRITE4(sc, I2S_TXCR, txcr); HWRITE4(sc, I2S_RXCR, rxcr); switch (pol) { case DAI_POLARITY_IB|DAI_POLARITY_NF: ckr |= CKR_CKP; break; case DAI_POLARITY_NB|DAI_POLARITY_NF: ckr &= ~CKR_CKP; break; default: return EINVAL; } switch (clk) { case DAI_CLOCK_CBM|DAI_CLOCK_CFM: ckr |= CKR_MSS; /* sclk input */ break; case DAI_CLOCK_CBS|DAI_CLOCK_CFS: ckr &= ~CKR_MSS; /* sclk output */ break; default: return EINVAL; } HWRITE4(sc, I2S_CKR, ckr); return 0; } int rkiis_set_sysclk(void *cookie, uint32_t rate) { struct rkiis_softc *sc = cookie; int error; error = clock_set_frequency(sc->sc_node, "i2s_clk", rate); if (error != 0) { printf("%s: can't set sysclk to %u Hz\n", sc->sc_dev.dv_xname, rate); return error; } return 0; } int rkiis_open(void *cookie, int flags) { if ((flags & (FWRITE | FREAD)) == (FWRITE | FREAD)) return ENXIO; return 0; } int rkiis_set_params(void *cookie, int setmode, int usemode, struct audio_params *play, struct audio_params *rec) { struct rkiis_softc *sc = cookie; uint32_t mclk_rate, bclk_rate; uint32_t bclk_div, lrck_div; uint32_t ckr, txcr, rxcr; int i; ckr = HREAD4(sc, I2S_CKR); if ((ckr & CKR_MSS) == 0) { mclk_rate = clock_get_frequency(sc->sc_node, "i2s_clk"); bclk_rate = 2 * 32 * RK_I2S_SAMPLE_RATE; bclk_div = mclk_rate / bclk_rate; lrck_div = bclk_rate / RK_I2S_SAMPLE_RATE; ckr &= ~CKR_MDIV_MASK; ckr |= (bclk_div - 1) << CKR_MDIV_SHIFT; ckr &= ~CKR_TSD_MASK; ckr |= (lrck_div - 1) << CKR_TSD_SHIFT; ckr &= ~CKR_RSD_MASK; ckr |= (lrck_div - 1) << CKR_RSD_SHIFT; } ckr &= ~CKR_TRCM_MASK; HWRITE4(sc, I2S_CKR, ckr); for (i = 0; i < 2; i++) { struct audio_params *p; int mode; switch (i) { case 0: mode = AUMODE_PLAY; p = play; break; case 1: mode = AUMODE_RECORD; p = rec; break; default: return EINVAL; } if (!(setmode & mode)) continue; if (p->channels & 1) return EINVAL; if (setmode & AUMODE_PLAY) { txcr = HREAD4(sc, I2S_TXCR); txcr &= ~TXCR_VDW_MASK; txcr |= (16 - 1) << TXCR_VDW_SHIFT; txcr &= ~TXCR_TCSR_MASK; txcr |= (p->channels / 2 - 1) << TXCR_TCSR_SHIFT; HWRITE4(sc, I2S_TXCR, txcr); } else { rxcr = HREAD4(sc, I2S_RXCR); rxcr &= ~RXCR_VDW_MASK; rxcr |= (16 - 1) << RXCR_VDW_SHIFT; rxcr &= ~RXCR_RCSR_MASK; rxcr |= (p->channels / 2 - 1) << RXCR_RCSR_SHIFT; HWRITE4(sc, I2S_RXCR, rxcr); } p->encoding = AUDIO_ENCODING_SLINEAR_LE; p->precision = 16; p->bps = AUDIO_BPS(p->precision); p->msb = 1; p->sample_rate = RK_I2S_SAMPLE_RATE; } return 0; } void * rkiis_allocm(void *cookie, int direction, size_t size, int type, int flags) { return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO); } void rkiis_freem(void *cookie, void *addr, int size) { free(addr, M_DEVBUF, size); } int rkiis_trigger_output(void *cookie, void *start, void *end, int blksize, void (*intr)(void *), void *intrarg, struct audio_params *params) { struct rkiis_softc *sc = cookie; struct rkiis_chan *ch = &sc->sc_pchan; uint32_t val; if (sc->sc_active == 0) { val = HREAD4(sc, I2S_XFER); val |= (XFER_TXS | XFER_RXS); HWRITE4(sc, I2S_XFER, val); } sc->sc_active |= XFER_TXS; val = HREAD4(sc, I2S_INTCR); val |= INTCR_TXEIE; val &= ~INTCR_TFT_MASK; val |= (RK_I2S_FIFO_DEPTH / 2) << INTCR_TFT_SHIFT; HWRITE4(sc, I2S_INTCR, val); ch->ch_intr = intr; ch->ch_intrarg = intrarg; ch->ch_start = ch->ch_cur = start; ch->ch_end = end; ch->ch_blksize = blksize; ch->ch_resid = blksize; return 0; } int rkiis_trigger_input(void *cookie, void *start, void *end, int blksize, void (*intr)(void *), void *intrarg, struct audio_params *params) { return EIO; } int rkiis_halt_output(void *cookie) { struct rkiis_softc *sc = cookie; struct rkiis_chan *ch = &sc->sc_pchan; uint32_t val; sc->sc_active &= ~XFER_TXS; if (sc->sc_active == 0) { val = HREAD4(sc, I2S_XFER); val &= ~(XFER_TXS|XFER_RXS); HWRITE4(sc, I2S_XFER, val); } val = HREAD4(sc, I2S_INTCR); val &= ~INTCR_TXEIE; HWRITE4(sc, I2S_INTCR, val); val = HREAD4(sc, I2S_CLR); val |= CLR_TXC; HWRITE4(sc, I2S_CLR, val); while ((HREAD4(sc, I2S_CLR) & CLR_TXC) != 0) delay(1); ch->ch_intr = NULL; ch->ch_intrarg = NULL; return 0; } int rkiis_halt_input(void *cookie) { struct rkiis_softc *sc = cookie; struct rkiis_chan *ch = &sc->sc_rchan; uint32_t val; sc->sc_active &= ~XFER_RXS; if (sc->sc_active == 0) { val = HREAD4(sc, I2S_XFER); val &= ~(XFER_TXS|XFER_RXS); HWRITE4(sc, I2S_XFER, val); } val = HREAD4(sc, I2S_INTCR); val &= ~INTCR_RXFIE; HWRITE4(sc, I2S_INTCR, val); ch->ch_intr = NULL; ch->ch_intrarg = NULL; return 0; }