svn commit: r261982 - in head/sys: arm/freescale/vybrid boot/fdt/dts
Ruslan Bukin
br at FreeBSD.org
Sun Feb 16 16:49:55 UTC 2014
Author: br
Date: Sun Feb 16 16:49:54 2014
New Revision: 261982
URL: http://svnweb.freebsd.org/changeset/base/261982
Log:
Add driver for Synchronous Audio Interface (SAI).
SAI supports full-duplex serial interfaces with frame
synchronization such as I2S, AC97, TDM, and codec/DSP
interfaces.
Added:
head/sys/arm/freescale/vybrid/vf_sai.c (contents, props changed)
Modified:
head/sys/arm/freescale/vybrid/files.vybrid
head/sys/boot/fdt/dts/vybrid.dtsi
Modified: head/sys/arm/freescale/vybrid/files.vybrid
==============================================================================
--- head/sys/arm/freescale/vybrid/files.vybrid Sun Feb 16 14:37:23 2014 (r261981)
+++ head/sys/arm/freescale/vybrid/files.vybrid Sun Feb 16 16:49:54 2014 (r261982)
@@ -29,4 +29,5 @@ arm/freescale/vybrid/vf_nfc.c optional
arm/freescale/vybrid/vf_ehci.c optional ehci
arm/freescale/vybrid/vf_gpio.c optional gpio
arm/freescale/vybrid/vf_uart.c optional uart
+arm/freescale/vybrid/vf_sai.c optional sound
dev/ffec/if_ffec.c optional ffec
Added: head/sys/arm/freescale/vybrid/vf_sai.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/freescale/vybrid/vf_sai.c Sun Feb 16 16:49:54 2014 (r261982)
@@ -0,0 +1,802 @@
+/*-
+ * Copyright (c) 2014 Ruslan Bukin <br at bsdpad.com>
+ * 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.
+ */
+
+/*
+ * Vybrid Family Synchronous Audio Interface (SAI)
+ * Chapter 51, Vybrid Reference Manual, Rev. 5, 07/2013
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+#include <sys/timeet.h>
+#include <sys/timetc.h>
+#include <sys/watchdog.h>
+
+#include <dev/sound/pcm/sound.h>
+#include <dev/sound/chip.h>
+#include <mixer_if.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+#include <machine/cpu.h>
+#include <machine/intr.h>
+
+#include <arm/freescale/vybrid/vf_common.h>
+#include <arm/freescale/vybrid/vf_dmamux.h>
+#include <arm/freescale/vybrid/vf_edma.h>
+
+#define I2S_TCSR 0x00 /* SAI Transmit Control */
+#define I2S_TCR1 0x04 /* SAI Transmit Configuration 1 */
+#define I2S_TCR2 0x08 /* SAI Transmit Configuration 2 */
+#define I2S_TCR3 0x0C /* SAI Transmit Configuration 3 */
+#define I2S_TCR4 0x10 /* SAI Transmit Configuration 4 */
+#define I2S_TCR5 0x14 /* SAI Transmit Configuration 5 */
+#define I2S_TDR0 0x20 /* SAI Transmit Data */
+#define I2S_TFR0 0x40 /* SAI Transmit FIFO */
+#define I2S_TMR 0x60 /* SAI Transmit Mask */
+#define I2S_RCSR 0x80 /* SAI Receive Control */
+#define I2S_RCR1 0x84 /* SAI Receive Configuration 1 */
+#define I2S_RCR2 0x88 /* SAI Receive Configuration 2 */
+#define I2S_RCR3 0x8C /* SAI Receive Configuration 3 */
+#define I2S_RCR4 0x90 /* SAI Receive Configuration 4 */
+#define I2S_RCR5 0x94 /* SAI Receive Configuration 5 */
+#define I2S_RDR0 0xA0 /* SAI Receive Data */
+#define I2S_RFR0 0xC0 /* SAI Receive FIFO */
+#define I2S_RMR 0xE0 /* SAI Receive Mask */
+
+#define TCR1_TFW_M 0x1f /* Transmit FIFO Watermark Mask */
+#define TCR1_TFW_S 0 /* Transmit FIFO Watermark Shift */
+#define TCR2_MSEL_M 0x3 /* MCLK Select Mask*/
+#define TCR2_MSEL_S 26 /* MCLK Select Shift*/
+#define TCR2_BCP (1 << 25) /* Bit Clock Polarity */
+#define TCR2_BCD (1 << 24) /* Bit Clock Direction */
+#define TCR3_TCE (1 << 16) /* Transmit Channel Enable */
+#define TCR4_FRSZ_M 0x1f /* Frame size Mask */
+#define TCR4_FRSZ_S 16 /* Frame size Shift */
+#define TCR4_SYWD_M 0x1f /* Sync Width Mask */
+#define TCR4_SYWD_S 8 /* Sync Width Shift */
+#define TCR4_MF (1 << 4) /* MSB First */
+#define TCR4_FSE (1 << 3) /* Frame Sync Early */
+#define TCR4_FSP (1 << 1) /* Frame Sync Polarity Low */
+#define TCR4_FSD (1 << 0) /* Frame Sync Direction Master */
+#define TCR5_FBT_M 0x1f /* First Bit Shifted */
+#define TCR5_FBT_S 8 /* First Bit Shifted */
+#define TCR5_W0W_M 0x1f /* Word 0 Width */
+#define TCR5_W0W_S 16 /* Word 0 Width */
+#define TCR5_WNW_M 0x1f /* Word N Width */
+#define TCR5_WNW_S 24 /* Word N Width */
+#define TCSR_TE (1 << 31) /* Transmitter Enable */
+#define TCSR_BCE (1 << 28) /* Bit Clock Enable */
+#define TCSR_FRDE (1 << 0) /* FIFO Request DMA Enable */
+
+#define SAI_NCHANNELS 1
+
+static MALLOC_DEFINE(M_SAI, "sai", "sai audio");
+
+struct sai_rate {
+ uint32_t speed;
+ uint32_t div; /* Bit Clock Divide. Division value is (div + 1) * 2. */
+ uint32_t mfi; /* PLL4 Multiplication Factor Integer */
+ uint32_t mfn; /* PLL4 Multiplication Factor Numerator */
+ uint32_t mfd; /* PLL4 Multiplication Factor Denominator */
+};
+
+/*
+ * Bit clock divider formula
+ * (div + 1) * 2 = MCLK/(nch * LRCLK * bits/1000000),
+ * where:
+ * MCLK - master clock
+ * nch - number of channels
+ * LRCLK - left right clock
+ * e.g. (div + 1) * 2 = 16.9344/(2 * 44100 * 24/1000000)
+ *
+ * Example for 96khz, 24bit, 18.432 Mhz mclk (192fs)
+ * { 96000, 1, 18, 40176000, 93000000 },
+ */
+
+static struct sai_rate rate_map[] = {
+ { 44100, 7, 33, 80798400, 93000000 }, /* 33.8688 Mhz */
+ { 96000, 3, 36, 80352000, 93000000 }, /* 36.864 Mhz */
+ { 192000, 1, 36, 80352000, 93000000 }, /* 36.864 Mhz */
+ { 0, 0 },
+};
+
+struct sc_info {
+ struct resource *res[2];
+ bus_space_tag_t bst;
+ bus_space_handle_t bsh;
+ device_t dev;
+ struct mtx *lock;
+ uint32_t speed;
+ uint32_t period;
+ void *ih;
+ int pos;
+ int dma_size;
+ bus_dma_tag_t dma_tag;
+ bus_dmamap_t dma_map;
+ bus_addr_t buf_base_phys;
+ uint32_t *buf_base;
+ struct tcd_conf *tcd;
+ struct sai_rate *sr;
+ struct edma_softc *edma_sc;
+ int edma_chnum;
+};
+
+/* Channel registers */
+struct sc_chinfo {
+ struct snd_dbuf *buffer;
+ struct pcm_channel *channel;
+ struct sc_pcminfo *parent;
+
+ /* Channel information */
+ uint32_t dir;
+ uint32_t format;
+
+ /* Flags */
+ uint32_t run;
+};
+
+/* PCM device private data */
+struct sc_pcminfo {
+ device_t dev;
+ uint32_t (*ih) (struct sc_pcminfo *scp);
+ uint32_t chnum;
+ struct sc_chinfo chan[SAI_NCHANNELS];
+ struct sc_info *sc;
+};
+
+static struct resource_spec sai_spec[] = {
+ { SYS_RES_MEMORY, 0, RF_ACTIVE },
+ { SYS_RES_IRQ, 0, RF_ACTIVE },
+ { -1, 0 }
+};
+
+static int setup_dma(struct sc_pcminfo *scp);
+static void setup_sai(struct sc_info *);
+static void sai_configure_clock(struct sc_info *);
+
+/*
+ * Mixer interface.
+ */
+
+static int
+saimixer_init(struct snd_mixer *m)
+{
+ struct sc_pcminfo *scp;
+ struct sc_info *sc;
+ int mask;
+
+ scp = mix_getdevinfo(m);
+ sc = scp->sc;
+
+ if (sc == NULL)
+ return -1;
+
+ mask = SOUND_MASK_PCM;
+
+ snd_mtxlock(sc->lock);
+ pcm_setflags(scp->dev, pcm_getflags(scp->dev) | SD_F_SOFTPCMVOL);
+ mix_setdevs(m, mask);
+ snd_mtxunlock(sc->lock);
+
+ return (0);
+}
+
+static int
+saimixer_set(struct snd_mixer *m, unsigned dev,
+ unsigned left, unsigned right)
+{
+ struct sc_pcminfo *scp;
+
+ scp = mix_getdevinfo(m);
+
+#if 0
+ device_printf(scp->dev, "saimixer_set() %d %d\n",
+ left, right);
+#endif
+
+ return (0);
+}
+
+static kobj_method_t saimixer_methods[] = {
+ KOBJMETHOD(mixer_init, saimixer_init),
+ KOBJMETHOD(mixer_set, saimixer_set),
+ KOBJMETHOD_END
+};
+MIXER_DECLARE(saimixer);
+
+/*
+ * Channel interface.
+ */
+
+static void *
+saichan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
+ struct pcm_channel *c, int dir)
+{
+ struct sc_pcminfo *scp;
+ struct sc_chinfo *ch;
+ struct sc_info *sc;
+
+ scp = (struct sc_pcminfo *)devinfo;
+ sc = scp->sc;
+
+ snd_mtxlock(sc->lock);
+ ch = &scp->chan[0];
+ ch->dir = dir;
+ ch->run = 0;
+ ch->buffer = b;
+ ch->channel = c;
+ ch->parent = scp;
+ snd_mtxunlock(sc->lock);
+
+ if (sndbuf_setup(ch->buffer, sc->buf_base, sc->dma_size) != 0) {
+ device_printf(scp->dev, "Can't setup sndbuf.\n");
+ return NULL;
+ }
+
+ return ch;
+}
+
+static int
+saichan_free(kobj_t obj, void *data)
+{
+ struct sc_chinfo *ch = data;
+ struct sc_pcminfo *scp = ch->parent;
+ struct sc_info *sc = scp->sc;
+
+#if 0
+ device_printf(scp->dev, "saichan_free()\n");
+#endif
+
+ snd_mtxlock(sc->lock);
+ /* TODO: free channel buffer */
+ snd_mtxunlock(sc->lock);
+
+ return (0);
+}
+
+static int
+saichan_setformat(kobj_t obj, void *data, uint32_t format)
+{
+ struct sc_chinfo *ch = data;
+
+ ch->format = format;
+
+ return (0);
+}
+
+static uint32_t
+saichan_setspeed(kobj_t obj, void *data, uint32_t speed)
+{
+ struct sc_pcminfo *scp;
+ struct sc_chinfo *ch;
+ struct sai_rate *sr;
+ struct sc_info *sc;
+ int threshold;
+ int i;
+
+ ch = data;
+ scp = ch->parent;
+ sc = scp->sc;
+
+ sr = NULL;
+
+ /* First look for equal frequency. */
+ for (i = 0; rate_map[i].speed != 0; i++) {
+ if (rate_map[i].speed == speed)
+ sr = &rate_map[i];
+ }
+
+ /* If no match, just find nearest. */
+ if (sr == NULL) {
+ for (i = 0; rate_map[i].speed != 0; i++) {
+ sr = &rate_map[i];
+ threshold = sr->speed + ((rate_map[i + 1].speed != 0) ?
+ ((rate_map[i + 1].speed - sr->speed) >> 1) : 0);
+ if (speed < threshold)
+ break;
+ }
+ }
+
+ sc->sr = sr;
+
+ sai_configure_clock(sc);
+
+ return (sr->speed);
+}
+
+static void
+sai_configure_clock(struct sc_info *sc)
+{
+ struct sai_rate *sr;
+ int reg;
+
+ sr = sc->sr;
+
+ /*
+ * Manual says that TCR/RCR registers must not be
+ * altered when TCSR[TE] is set.
+ * We ignore it since we have problem sometimes
+ * after re-enabling transmitter (DMA goes stall).
+ */
+
+ reg = READ4(sc, I2S_TCR2);
+ reg &= ~(0xff << 0);
+ reg |= (sr->div << 0);
+ WRITE4(sc, I2S_TCR2, reg);
+
+ pll4_configure_output(sr->mfi, sr->mfn, sr->mfd);
+}
+
+static uint32_t
+saichan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
+{
+ struct sc_chinfo *ch = data;
+ struct sc_pcminfo *scp = ch->parent;
+ struct sc_info *sc = scp->sc;
+
+ sndbuf_resize(ch->buffer, sc->dma_size / blocksize, blocksize);
+
+ sc->period = sndbuf_getblksz(ch->buffer);
+ return (sc->period);
+}
+
+uint32_t sai_dma_intr(void *arg, int chn);
+uint32_t
+sai_dma_intr(void *arg, int chn)
+{
+ struct sc_pcminfo *scp;
+ struct sc_chinfo *ch;
+ struct sc_info *sc;
+ struct tcd_conf *tcd;
+
+ scp = arg;
+ ch = &scp->chan[0];
+
+ sc = scp->sc;
+ tcd = sc->tcd;
+
+ sc->pos += (tcd->nbytes * tcd->nmajor);
+ if (sc->pos >= sc->dma_size)
+ sc->pos -= sc->dma_size;
+
+ chn_intr(ch->channel);
+
+ return (0);
+}
+
+static int
+find_edma_controller(struct sc_info *sc)
+{
+ struct edma_softc *edma_sc;
+ phandle_t node, edma_node;
+ int edma_src_transmit;
+ int edma_mux_group;
+ int edma_device_id;
+ device_t edma_dev;
+ int dts_value;
+ int len;
+ int i;
+
+ if ((node = ofw_bus_get_node(sc->dev)) == -1)
+ return (ENXIO);
+
+ if ((len = OF_getproplen(node, "edma-controller")) <= 0)
+ return (ENXIO);
+ if ((len = OF_getproplen(node, "edma-src-transmit")) <= 0)
+ return (ENXIO);
+ if ((len = OF_getproplen(node, "edma-mux-group")) <= 0)
+ return (ENXIO);
+
+ OF_getprop(node, "edma-src-transmit", &dts_value, len);
+ edma_src_transmit = fdt32_to_cpu(dts_value);
+ OF_getprop(node, "edma-mux-group", &dts_value, len);
+ edma_mux_group = fdt32_to_cpu(dts_value);
+ OF_getprop(node, "edma-controller", &dts_value, len);
+ edma_node = OF_xref_phandle(fdt32_to_cpu(dts_value));
+
+ if ((len = OF_getproplen(edma_node, "device-id")) <= 0) {
+ return (ENXIO);
+ };
+
+ OF_getprop(edma_node, "device-id", &dts_value, len);
+ edma_device_id = fdt32_to_cpu(dts_value);
+
+ edma_sc = NULL;
+
+ for (i = 0; i < EDMA_NUM_DEVICES; i++) {
+ edma_dev = devclass_get_device(devclass_find("edma"), i);
+ if (edma_dev) {
+ edma_sc = device_get_softc(edma_dev);
+ if (edma_sc->device_id == edma_device_id) {
+ /* found */
+ break;
+ };
+
+ edma_sc = NULL;
+ };
+ };
+
+ if (edma_sc == NULL) {
+ device_printf(sc->dev, "no eDMA. can't operate\n");
+ return (ENXIO);
+ };
+
+ sc->edma_sc = edma_sc;
+
+ sc->edma_chnum = edma_sc->channel_configure(edma_sc, edma_mux_group,
+ edma_src_transmit);
+ if (sc->edma_chnum < 0) {
+ /* cant setup eDMA */
+ return (ENXIO);
+ };
+
+ return (0);
+};
+
+static int
+setup_dma(struct sc_pcminfo *scp)
+{
+ struct tcd_conf *tcd;
+ struct sc_info *sc;
+
+ sc = scp->sc;
+
+ tcd = malloc(sizeof(struct tcd_conf), M_DEVBUF, M_WAITOK | M_ZERO);
+ tcd->channel = sc->edma_chnum;
+ tcd->ih = sai_dma_intr;
+ tcd->ih_user = scp;
+ tcd->saddr = sc->buf_base_phys;
+ tcd->daddr = rman_get_start(sc->res[0]) + I2S_TDR0;
+
+ /*
+ * Bytes to transfer per each minor loop.
+ * Hardware FIFO buffer size is 32x32bits.
+ */
+ tcd->nbytes = 64;
+
+ tcd->nmajor = 512;
+ tcd->smod = 18; /* dma_size range */
+ tcd->dmod = 0;
+ tcd->esg = 0;
+ tcd->soff = 0x4;
+ tcd->doff = 0;
+ tcd->ssize = 0x2;
+ tcd->dsize = 0x2;
+ tcd->slast = 0;
+ tcd->dlast_sga = 0;
+
+ sc->tcd = tcd;
+
+ sc->edma_sc->dma_setup(sc->edma_sc, sc->tcd);
+
+ return (0);
+}
+
+static int
+saichan_trigger(kobj_t obj, void *data, int go)
+{
+ struct sc_chinfo *ch = data;
+ struct sc_pcminfo *scp = ch->parent;
+ struct sc_info *sc = scp->sc;
+
+ snd_mtxlock(sc->lock);
+
+ switch (go) {
+ case PCMTRIG_START:
+#if 0
+ device_printf(scp->dev, "trigger start\n");
+#endif
+ break;
+
+ case PCMTRIG_STOP:
+ case PCMTRIG_ABORT:
+#if 0
+ device_printf(scp->dev, "trigger stop or abort\n");
+#endif
+ break;
+ }
+
+ snd_mtxunlock(sc->lock);
+
+ return (0);
+}
+
+static uint32_t
+saichan_getptr(kobj_t obj, void *data)
+{
+ struct sc_pcminfo *scp;
+ struct sc_chinfo *ch;
+ struct sc_info *sc;
+
+ ch = data;
+ scp = ch->parent;
+ sc = scp->sc;
+
+ return (sc->pos);
+}
+
+static uint32_t sai_pfmt[] = {
+ /*
+ * eDMA doesn't allow 24-bit coping,
+ * so we use 32.
+ */
+ SND_FORMAT(AFMT_S32_LE, 2, 0),
+ 0
+};
+
+static struct pcmchan_caps sai_pcaps = {44100, 192000, sai_pfmt, 0};
+
+static struct pcmchan_caps *
+saichan_getcaps(kobj_t obj, void *data)
+{
+
+ return (&sai_pcaps);
+}
+
+static kobj_method_t saichan_methods[] = {
+ KOBJMETHOD(channel_init, saichan_init),
+ KOBJMETHOD(channel_free, saichan_free),
+ KOBJMETHOD(channel_setformat, saichan_setformat),
+ KOBJMETHOD(channel_setspeed, saichan_setspeed),
+ KOBJMETHOD(channel_setblocksize, saichan_setblocksize),
+ KOBJMETHOD(channel_trigger, saichan_trigger),
+ KOBJMETHOD(channel_getptr, saichan_getptr),
+ KOBJMETHOD(channel_getcaps, saichan_getcaps),
+ KOBJMETHOD_END
+};
+CHANNEL_DECLARE(saichan);
+
+static int
+sai_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "fsl,mvf600-sai"))
+ return (ENXIO);
+
+ device_set_desc(dev, "Vybrid Family Synchronous Audio Interface");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static void
+sai_intr(void *arg)
+{
+ struct sc_pcminfo *scp;
+ struct sc_info *sc;
+
+ scp = arg;
+ sc = scp->sc;
+
+ device_printf(sc->dev, "Error I2S_TCSR == 0x%08x\n",
+ READ4(sc, I2S_TCSR));
+}
+
+static void
+setup_sai(struct sc_info *sc)
+{
+ int reg;
+
+ /*
+ * TCR/RCR registers must not be altered when TCSR[TE] is set.
+ */
+
+ reg = READ4(sc, I2S_TCSR);
+ reg &= ~(TCSR_BCE | TCSR_TE | TCSR_FRDE);
+ WRITE4(sc, I2S_TCSR, reg);
+
+ reg = READ4(sc, I2S_TCR3);
+ reg &= ~(TCR3_TCE);
+ WRITE4(sc, I2S_TCR3, reg);
+
+ reg = (64 << TCR1_TFW_S);
+ WRITE4(sc, I2S_TCR1, reg);
+
+ reg = READ4(sc, I2S_TCR2);
+ reg &= ~(TCR2_MSEL_M << TCR2_MSEL_S);
+ reg |= (1 << TCR2_MSEL_S);
+ reg |= (TCR2_BCP | TCR2_BCD);
+ WRITE4(sc, I2S_TCR2, reg);
+
+ sai_configure_clock(sc);
+
+ reg = READ4(sc, I2S_TCR3);
+ reg |= (TCR3_TCE);
+ WRITE4(sc, I2S_TCR3, reg);
+
+ /* Configure to 32-bit I2S mode */
+ reg = READ4(sc, I2S_TCR4);
+ reg &= ~(TCR4_FRSZ_M << TCR4_FRSZ_S);
+ reg |= (1 << TCR4_FRSZ_S); /* 2 words per frame */
+ reg &= ~(TCR4_SYWD_M << TCR4_SYWD_S);
+ reg |= (23 << TCR4_SYWD_S);
+ reg |= (TCR4_MF | TCR4_FSE | TCR4_FSP | TCR4_FSD);
+ WRITE4(sc, I2S_TCR4, reg);
+
+ reg = READ4(sc, I2S_TCR5);
+ reg &= ~(TCR5_W0W_M << TCR5_W0W_S);
+ reg |= (23 << TCR5_W0W_S);
+ reg &= ~(TCR5_WNW_M << TCR5_WNW_S);
+ reg |= (23 << TCR5_WNW_S);
+ reg &= ~(TCR5_FBT_M << TCR5_FBT_S);
+ reg |= (31 << TCR5_FBT_S);
+ WRITE4(sc, I2S_TCR5, reg);
+
+ /* Enable transmitter */
+ reg = READ4(sc, I2S_TCSR);
+ reg |= (TCSR_BCE | TCSR_TE | TCSR_FRDE);
+ reg |= (1 << 10); /* FEIE */
+ WRITE4(sc, I2S_TCSR, reg);
+}
+
+
+static void
+sai_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
+{
+ bus_addr_t *addr;
+
+ if (err)
+ return;
+
+ addr = (bus_addr_t*)arg;
+ *addr = segs[0].ds_addr;
+}
+
+static int
+sai_attach(device_t dev)
+{
+ char status[SND_STATUSLEN];
+ struct sc_pcminfo *scp;
+ struct sc_info *sc;
+ int err;
+
+ sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
+ sc->dev = dev;
+ sc->sr = &rate_map[0];
+ sc->pos = 0;
+
+ sc->lock = snd_mtxcreate(device_get_nameunit(dev), "sai softc");
+ if (sc->lock == NULL) {
+ device_printf(dev, "Cant create mtx\n");
+ return (ENXIO);
+ }
+
+ if (bus_alloc_resources(dev, sai_spec, sc->res)) {
+ device_printf(dev, "could not allocate resources\n");
+ return (ENXIO);
+ }
+
+ /* Memory interface */
+ sc->bst = rman_get_bustag(sc->res[0]);
+ sc->bsh = rman_get_bushandle(sc->res[0]);
+
+ /* eDMA */
+ if (find_edma_controller(sc)) {
+ device_printf(dev, "could not find active eDMA\n");
+ return (ENXIO);
+ }
+
+ /* Setup PCM */
+ scp = malloc(sizeof(struct sc_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
+ scp->sc = sc;
+ scp->dev = dev;
+
+ /* DMA */
+ sc->dma_size = 262144;
+
+ /*
+ * Must use dma_size boundary as modulo feature required.
+ * Modulo feature allows setup circular buffer.
+ */
+
+ err = bus_dma_tag_create(
+ bus_get_dma_tag(sc->dev),
+ 4, sc->dma_size, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ sc->dma_size, 1, /* maxsize, nsegments */
+ sc->dma_size, 0, /* maxsegsize, flags */
+ NULL, NULL, /* lockfunc, lockarg */
+ &sc->dma_tag);
+
+ err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->buf_base,
+ BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &sc->dma_map);
+ if (err) {
+ device_printf(dev, "cannot allocate framebuffer\n");
+ return (ENXIO);
+ }
+
+ err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->buf_base,
+ sc->dma_size, sai_dmamap_cb, &sc->buf_base_phys, BUS_DMA_NOWAIT);
+ if (err) {
+ device_printf(dev, "cannot load DMA map\n");
+ return (ENXIO);
+ }
+
+ bzero(sc->buf_base, sc->dma_size);
+
+ /* Setup interrupt handler */
+ err = bus_setup_intr(dev, sc->res[1], INTR_MPSAFE | INTR_TYPE_AV,
+ NULL, sai_intr, scp, &sc->ih);
+ if (err) {
+ device_printf(dev, "Unable to alloc interrupt resource.\n");
+ return (ENXIO);
+ }
+
+ pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE);
+
+ err = pcm_register(dev, scp, 1, 0);
+ if (err) {
+ device_printf(dev, "Can't register pcm.\n");
+ return (ENXIO);
+ }
+
+ scp->chnum = 0;
+ pcm_addchan(dev, PCMDIR_PLAY, &saichan_class, scp);
+ scp->chnum++;
+
+ snprintf(status, SND_STATUSLEN, "at simplebus");
+ pcm_setstatus(dev, status);
+
+ mixer_init(dev, &saimixer_class, scp);
+
+ setup_dma(scp);
+ setup_sai(sc);
+
+ return (0);
+}
+
+static device_method_t sai_pcm_methods[] = {
+ DEVMETHOD(device_probe, sai_probe),
+ DEVMETHOD(device_attach, sai_attach),
+ { 0, 0 }
+};
+
+static driver_t sai_pcm_driver = {
+ "pcm",
+ sai_pcm_methods,
+ PCM_SOFTC_SIZE,
+};
+
+DRIVER_MODULE(sai, simplebus, sai_pcm_driver, pcm_devclass, 0, 0);
+MODULE_DEPEND(sai, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
+MODULE_VERSION(sai, 1);
Modified: head/sys/boot/fdt/dts/vybrid.dtsi
==============================================================================
--- head/sys/boot/fdt/dts/vybrid.dtsi Sun Feb 16 14:37:23 2014 (r261981)
+++ head/sys/boot/fdt/dts/vybrid.dtsi Sun Feb 16 16:49:54 2014 (r261982)
@@ -311,6 +311,9 @@
interrupt-parent = <&GIC>;
status = "disabled";
edma-controller = <&edma1>;
+ edma-src-receive = < 8 >;
+ edma-src-transmit = < 9 >;
+ edma-mux-group = < 1 >;
clock_names = "sai3", "cko1";
iomux_config = < 16 0x2
19 0x2
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