Patchwork [v5,16/24] hw/arm: add Faraday FTSSP010 multi-function controller support

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Submitter Kuo-Jung Su
Date Feb. 27, 2013, 7:15 a.m.
Message ID <1361949350-22241-17-git-send-email-dantesu@gmail.com>
Download mbox | patch
Permalink /patch/223538/
State New
Headers show

Comments

Kuo-Jung Su - Feb. 27, 2013, 7:15 a.m.
From: Kuo-Jung Su <dantesu@faraday-tech.com>

The FTSSP010 is a multi-function synchronous serial port interface
controller which supports SSP, SPI, I2S, AC97 and SPDIF.

Only I2S and SPI protocol have been implemented in this patch.

Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com>
---
 hw/arm/Makefile.objs      |    1 +
 hw/arm/faraday.h          |    3 +
 hw/arm/faraday_a369.c     |   23 +++
 hw/arm/faraday_a369_soc.c |   17 ++
 hw/arm/ftssp010.c         |  493 +++++++++++++++++++++++++++++++++++++++++++++
 hw/arm/ftssp010.h         |   96 +++++++++
 6 files changed, 633 insertions(+)
 create mode 100644 hw/arm/ftssp010.c
 create mode 100644 hw/arm/ftssp010.h

Patch

diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index 2d00dac..b27ae4a 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -47,3 +47,4 @@  obj-y += ftdmac020.o
 obj-y += ftapbbrg020.o
 obj-y += ftnandc021.o
 obj-y += fti2c010.o
+obj-y += ftssp010.o
diff --git a/hw/arm/faraday.h b/hw/arm/faraday.h
index e5f611d..fb61297 100644
--- a/hw/arm/faraday.h
+++ b/hw/arm/faraday.h
@@ -65,4 +65,7 @@  typedef struct FaradaySoCState {
 /* ftintc020.c */
 qemu_irq *ftintc020_init(hwaddr base, ARMCPU *cpu);
 
+/* ftssp010.c */
+void ftssp010_i2s_data_req(void *opaque, int tx, int rx);
+
 #endif
diff --git a/hw/arm/faraday_a369.c b/hw/arm/faraday_a369.c
index 0b6201a..46fc570 100644
--- a/hw/arm/faraday_a369.c
+++ b/hw/arm/faraday_a369.c
@@ -22,6 +22,7 @@ 
 static void
 a369_board_init(QEMUMachineInitArgs *args)
 {
+    int i, nr_flash;
     DeviceState *ds;
     FaradaySoCState *s;
 
@@ -44,6 +45,28 @@  a369_board_init(QEMUMachineInitArgs *args)
 
     s = FARADAY_SOC(ds);
 
+    /* Attach the spi flash to ftssp010.0 */
+    nr_flash = 1;
+    for (i = 0; i < nr_flash; i++) {
+        SSIBus *ssi = (SSIBus *)qdev_get_child_bus(s->spi[0], "spi");
+        DeviceState *fl = ssi_create_slave_no_init(ssi, "m25p80");
+        qemu_irq cs_line;
+
+        qdev_prop_set_string(fl, "partname", "w25q64");
+        qdev_init_nofail(fl);
+        cs_line = qdev_get_gpio_in(fl, 0);
+        sysbus_connect_irq(SYS_BUS_DEVICE(s->spi[0]), i + 1, cs_line);
+    }
+
+    /* Attach the wm8731 to fti2c010.0 & ftssp010.0 */
+    for (i = 0; i < 1; ++i) {
+        i2c_bus *i2c = (i2c_bus *)qdev_get_child_bus(s->i2c[0], "i2c");
+        s->codec = i2c_create_slave(i2c, "wm8731", 0x1B);
+        s->codec_out = wm8731_dac_dat;
+        s->codec_in  = wm8731_adc_dat;
+        wm8731_data_req_set(s->codec, ftssp010_i2s_data_req, s->i2s[0]);
+    }
+
     if (args->kernel_filename) {
         s->bi = g_new0(struct arm_boot_info, 1);
 
diff --git a/hw/arm/faraday_a369_soc.c b/hw/arm/faraday_a369_soc.c
index c211ff8..fd0c98c 100644
--- a/hw/arm/faraday_a369_soc.c
+++ b/hw/arm/faraday_a369_soc.c
@@ -225,6 +225,23 @@  a369soc_device_init(FaradaySoCState *s)
     s->i2c[0] = ds;
     ds = sysbus_create_simple("fti2c010", 0x92A00000, pic[52]);
     s->i2c[1] = ds;
+
+    /* ftssp010 */
+    ds = sysbus_create_simple("ftssp010", 0x92700000, pic[49]);
+    s->spi[0] = ds;
+    s->i2s[0] = ds;
+
+    /* ftssp010 - DMA (Tx) */
+    ack = qdev_get_gpio_in(ds, 0);
+    req = qdev_get_gpio_in(s->pdma[0], 7);
+    qdev_connect_gpio_out(s->pdma[0], 7, ack);
+    qdev_connect_gpio_out(ds, 0, req);
+
+    /* ftssp010 - DMA (Rx) */
+    ack = qdev_get_gpio_in(ds, 1);
+    req = qdev_get_gpio_in(s->pdma[0], 8);
+    qdev_connect_gpio_out(s->pdma[0], 8, ack);
+    qdev_connect_gpio_out(ds, 1, req);
 }
 
 static int a369soc_init(SysBusDevice *busdev)
diff --git a/hw/arm/ftssp010.c b/hw/arm/ftssp010.c
new file mode 100644
index 0000000..5dec4de
--- /dev/null
+++ b/hw/arm/ftssp010.c
@@ -0,0 +1,493 @@ 
+/*
+ * QEMU model of the FTSSP010 Controller
+ *
+ * Copyright (C) 2012 Faraday Technology
+ * Written by Dante Su <dantesu@faraday-tech.com>
+ *
+ * This file is licensed under GNU GPL v2+.
+ */
+
+#include "hw/sysbus.h"
+#include "sysemu/sysemu.h"
+#include "hw/fifo.h"
+#include "hw/i2c.h"
+#include "hw/ssi.h"
+
+#include "faraday.h"
+#include "ftssp010.h"
+
+#define CFG_FIFO_DEPTH  16
+
+#define TYPE_FTSSP010   "ftssp010"
+
+typedef struct Ftssp010State {
+    SysBusDevice busdev;
+    MemoryRegion mmio;
+
+    qemu_irq irq;
+    SSIBus *spi;
+
+    uint8_t num_cs;
+    qemu_irq *cs_lines;
+
+    Fifo8 rx_fifo;
+    Fifo8 tx_fifo;
+
+    uint8_t tx_thres;
+    uint8_t rx_thres;
+
+    int busy;
+    uint8_t bw;
+
+    /* I2S */
+    void *codec;
+    void (*codec_out)(void *, uint32_t);
+    uint32_t (*codec_in)(void *);
+
+    /* DMA hardware handshake */
+    qemu_irq req[2];    /* 0 - Tx, 1 - Rx */
+
+    /* HW register caches */
+
+    uint32_t cr0;
+    uint32_t cr1;
+    uint32_t cr2;
+    uint32_t icr;    /* interrupt control register */
+    uint32_t isr;    /* interrupt status register */
+
+} Ftssp010State;
+
+#define FTSSP010(obj) \
+    OBJECT_CHECK(Ftssp010State, obj, TYPE_FTSSP010)
+
+/* Update interrupts.  */
+static void ftssp010_update(Ftssp010State *s)
+{
+    if (!(s->cr2 & CR2_SSPEN)) {
+        return;
+    }
+
+    /* tx fifo status update */
+    if ((s->tx_fifo.num / (s->bw >> 3)) <= s->tx_thres) {
+        s->isr |=  ISR_TFTHI;
+        if (s->icr & ICR_TFDMA) {
+            qemu_set_irq(s->req[0], 1);
+        }
+    } else {
+        s->isr &= ~ISR_TFTHI;
+    }
+
+    /* rx fifo status update */
+    switch (s->cr0 & CR0_FFMT_MASK) {
+    case CR0_FFMT_SPI:
+        s->isr |=  ISR_RFTHI;
+        if (s->icr & ICR_RFDMA) {
+            qemu_set_irq(s->req[1], 1);
+        }
+        break;
+    default:
+        if ((s->rx_fifo.num / (s->bw >> 3)) >= s->rx_thres) {
+            s->isr |=  ISR_RFTHI;
+            if (s->icr & ICR_RFDMA) {
+                qemu_set_irq(s->req[1], 1);
+            }
+        } else {
+            s->isr &= ~ISR_RFTHI;
+        }
+        break;
+    }
+
+    /* update the interrupt signal */
+    qemu_set_irq(s->irq, (s->icr & s->isr) ? 1 : 0);
+}
+
+static void ftssp010_handle_ack(void *opaque, int line, int level)
+{
+    Ftssp010State *s = FTSSP010(opaque);
+
+    switch (line) {
+    case 0:    /* Tx */
+        if (s->icr & ICR_TFDMA) {
+            if (level) {
+                qemu_set_irq(s->req[0], 0);
+            } else if ((s->tx_fifo.num / (s->bw >> 3)) <= s->tx_thres) {
+                qemu_set_irq(s->req[0], 1);
+            }
+        }
+        break;
+    case 1:    /* Rx */
+        if (s->icr & ICR_RFDMA) {
+            if (level) {
+                qemu_set_irq(s->req[1], 0);
+            } else {
+                switch (s->cr0 & CR0_FFMT_MASK) {
+                case CR0_FFMT_SPI:
+                    qemu_set_irq(s->req[1], 1);
+                    break;
+                default:
+                    if ((s->rx_fifo.num / (s->bw >> 3)) >= s->rx_thres) {
+                        qemu_set_irq(s->req[1], 1);
+                    }
+                    break;
+                }
+            }
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+void ftssp010_i2s_data_req(void *opaque, int tx, int rx)
+{
+    int i, len;
+    uint32_t sample;
+    Ftssp010State *s = FTSSP010(opaque);
+
+    if (!s->codec) {
+        FaradaySoCState *soc = FARADAY_SOC_GET_CORE();
+        s->codec = soc->codec;
+        s->codec_in = soc->codec_in;
+        s->codec_out = soc->codec_out;
+    }
+
+    if (!(s->cr2 & CR2_SSPEN)) {
+        return;
+    }
+
+    if ((s->cr0 & CR0_FFMT_MASK) != CR0_FFMT_I2S) {
+        return;
+    }
+
+    s->busy = 1;
+
+    if ((s->cr2 & CR2_TXEN) && (s->cr2 & CR2_TXDOE)) {
+        len = tx * (s->bw / 8);
+        while (!fifo8_is_empty(&s->tx_fifo) && len > 0) {
+            sample = 0;
+            for (i = 0; i < (s->bw >> 3) && len > 0; i++, len--) {
+                sample = deposit32(sample, i * 8, 8, fifo8_pop(&s->tx_fifo));
+            }
+            s->codec_out(s->codec, sample);
+        }
+
+        if (fifo8_is_empty(&s->tx_fifo) && len > 0) {
+            s->isr |= ISR_TFURI;
+        }
+    }
+
+    if (s->cr2 & CR2_RXEN) {
+        len = rx * (s->bw / 8);
+        while (!fifo8_is_full(&s->rx_fifo) && len > 0) {
+            sample = s->codec_in(s->codec);
+            for (i = 0; i < (s->bw >> 3) && len > 0; i++, len--) {
+                fifo8_push(&s->rx_fifo, extract32(sample, i * 8, 8));
+            }
+        }
+
+        if (fifo8_is_full(&s->rx_fifo) && len > 0) {
+            s->isr |= ISR_RFORI;
+        }
+    }
+
+    s->busy = 0;
+
+    ftssp010_update(s);
+}
+
+static void ftssp010_spi_tx(Ftssp010State *s)
+{
+    if (!(s->cr2 & CR2_TXEN)) {
+        return;
+    }
+
+    s->busy = 1;
+
+    if (fifo8_is_empty(&s->tx_fifo)) {
+        s->isr |= ISR_TFURI;
+    }
+
+    while (!fifo8_is_empty(&s->tx_fifo)) {
+        ssi_transfer(s->spi, fifo8_pop(&s->tx_fifo));
+    }
+
+    s->busy = 0;
+}
+
+static uint64_t
+ftssp010_mem_read(void *opaque, hwaddr addr, unsigned size)
+{
+    Ftssp010State *s = FTSSP010(opaque);
+    uint32_t i, ret = 0;
+
+    if (addr & 0x03) {
+        hw_error("ftssp010: "
+                 "Although ftssp010 supports byte/half-word access, "
+                 "the target address still needs to be word aligned\n");
+        exit(1);
+    }
+
+    switch (addr) {
+    case REG_CR0:    /* Control Register 0 */
+        return s->cr0;
+    case REG_CR1:    /* Control Register 1 */
+        return s->cr1;
+    case REG_CR2:    /* Control Register 2 */
+        return s->cr2;
+    case REG_SR:    /* Status Register */
+        ret |= s->busy ? SR_BUSY : 0;
+        /* tx fifo status */
+        ret |= SR_TFVE(s->tx_fifo.num / (s->bw >> 3));
+        if (!fifo8_is_full(&s->tx_fifo)) {
+            ret |= SR_TFNF;
+        }
+        /* rx fifo status */
+        switch (s->cr0 & CR0_FFMT_MASK) {
+        case CR0_FFMT_SPI:
+            ret |= SR_RFF | SR_RFVE(CFG_FIFO_DEPTH);
+            break;
+        case CR0_FFMT_I2S:
+            ret |= SR_RFVE(s->rx_fifo.num / (s->bw >> 3));
+            if (fifo8_is_full(&s->rx_fifo)) {
+                ret |= SR_RFF;
+            }
+            break;
+        default:
+            break;
+        }
+        break;
+    case REG_ICR:    /* Interrupt Control Register */
+        return s->icr;
+    case REG_ISR:    /* Interrupt Status Register */
+        ret = s->isr;
+        s->isr &= ~ISR_RCMASK;
+        ftssp010_update(s);
+        break;
+    case REG_DR:    /* Data Register */
+        if (!(s->cr2 & CR2_SSPEN)) {
+            break;
+        }
+        if (!(s->cr2 & CR2_RXEN)) {
+            break;
+        }
+        switch (s->cr0 & CR0_FFMT_MASK) {
+        case CR0_FFMT_SPI:
+            for (i = 0; i < (s->bw >> 3); i++) {
+                ret = deposit32(ret, i * 8, 8, ssi_transfer(s->spi, 0));
+            }
+            break;
+        case CR0_FFMT_I2S:
+            for (i = 0; i < (s->bw >> 3); i++) {
+                if (fifo8_is_empty(&s->rx_fifo)) {
+                    break;
+                }
+                ret = deposit32(ret, i * 8, 8, fifo8_pop(&s->rx_fifo));
+            }
+            break;
+        default:
+            break;
+        }
+        ftssp010_update(s);
+        break;
+    case REG_REVR:
+        return 0x00011901;    /* ver. 1.19.1 */
+    case REG_FEAR:
+        return 0x660f0f1f;    /* SPI+I2S, FIFO=16 */
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "ftssp010: undefined memory access@0x%llx\n", addr);
+        break;
+    }
+
+    return ret;
+}
+
+static void
+ftssp010_mem_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
+{
+    int i;
+    Ftssp010State *s = FTSSP010(opaque);
+
+    if (addr & 0x03) {
+        hw_error("ftssp010: "
+                 "Although ftssp010 supports byte/half-word access, "
+                 "the target address still needs to be word aligned\n");
+        exit(1);
+    }
+
+    switch (addr) {
+    case REG_CR0:    /* Control Register 0 */
+        s->cr0 = (uint32_t)val;
+        break;
+    case REG_CR1:    /* Control Register 1 */
+        s->cr1 = (uint32_t)val;
+        s->bw  = extract32(s->cr1, 16, 7) + 1;
+        break;
+    case REG_CR2:    /* Control Register 2 */
+        s->cr2 = (uint32_t)val;
+        if (s->cr2 & CR2_SSPRST) {
+            fifo8_reset(&s->tx_fifo);
+            fifo8_reset(&s->rx_fifo);
+            s->busy = 0;
+            s->cr2 &= ~(CR2_SSPRST | CR2_TXFCLR | CR2_RXFCLR);
+            if (s->cr0 & CR0_FLASH) {
+                int cs = extract32(s->cr2, 10, 2);
+                qemu_set_irq(s->cs_lines[cs], 1);
+                s->cr2 |= CR2_FS;
+            };
+        }
+        if (s->cr2 & CR2_TXFCLR) {
+            fifo8_reset(&s->tx_fifo);
+            s->cr2 &= ~CR2_TXFCLR;
+        }
+        if (s->cr2 & CR2_RXFCLR) {
+            fifo8_reset(&s->rx_fifo);
+            s->cr2 &= ~CR2_RXFCLR;
+        }
+        if (s->cr0 & CR0_FLASH) {
+            int cs = extract32(s->cr2, 10, 2);
+            qemu_set_irq(s->cs_lines[cs], (s->cr2 & CR2_FS) ? 1 : 0);
+        }
+        if (s->cr2 & CR2_SSPEN) {
+            switch (s->cr0 & CR0_FFMT_MASK) {
+            case CR0_FFMT_SPI:
+                ftssp010_spi_tx(s);
+                break;
+            default:
+                break;
+            }
+        }
+        ftssp010_update(s);
+        break;
+    case REG_ICR:    /* Interrupt Control Register */
+        s->icr = (uint32_t)val;
+        s->tx_thres = extract32(s->icr, 12, 5);
+        s->rx_thres = extract32(s->icr,  7, 5);
+        break;
+    case REG_DR:    /* Data Register */
+        if (!(s->cr2 & CR2_SSPEN)) {
+            break;
+        }
+        for (i = 0; i < (s->bw >> 3) && !fifo8_is_full(&s->tx_fifo); i++) {
+            fifo8_push(&s->tx_fifo, extract32((uint32_t)val, i * 8, 8));
+        }
+        switch (s->cr0 & CR0_FFMT_MASK) {
+        case CR0_FFMT_SPI:
+            ftssp010_spi_tx(s);
+            break;
+        default:
+            break;
+        }
+        ftssp010_update(s);
+        break;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "ftssp010: undefined memory access@0x%llx\n", addr);
+        break;
+    }
+}
+
+static const MemoryRegionOps mmio_ops = {
+    .read  = ftssp010_mem_read,
+    .write = ftssp010_mem_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 4
+    }
+};
+
+static void ftssp010_reset(DeviceState *ds)
+{
+    SysBusDevice *busdev = SYS_BUS_DEVICE(ds);
+    Ftssp010State *s = FTSSP010(FROM_SYSBUS(Ftssp010State, busdev));
+
+    s->busy = 0;
+    s->bw   = 8;    /* 8-bit */
+
+    s->cr0 = 0;
+    s->cr1 = 0;
+    s->cr2 = 0;
+    s->tx_thres = 4;
+    s->rx_thres = 4;
+    s->icr = ICR_TFTHOD(4) | ICR_RFTHOD(4);
+    s->isr = ISR_TFTHI;
+
+    fifo8_reset(&s->tx_fifo);
+    fifo8_reset(&s->rx_fifo);
+
+    ftssp010_update(s);
+}
+
+static int ftssp010_init(SysBusDevice *dev)
+{
+    Ftssp010State *s = FTSSP010(FROM_SYSBUS(Ftssp010State, dev));
+    int i;
+
+    s->spi = ssi_create_bus(&dev->qdev, "spi");
+
+    fifo8_create(&s->tx_fifo, CFG_FIFO_DEPTH * 4);
+    fifo8_create(&s->rx_fifo, CFG_FIFO_DEPTH * 4);
+
+    memory_region_init_io(&s->mmio,
+                          &mmio_ops,
+                          s,
+                          TYPE_FTSSP010,
+                          0x1000);
+    sysbus_init_mmio(dev, &s->mmio);
+    sysbus_init_irq(dev, &s->irq);
+
+    s->num_cs = 4;
+    s->cs_lines = g_new(qemu_irq, s->num_cs);
+    ssi_auto_connect_slaves(DEVICE(s), s->cs_lines, s->spi);
+    for (i = 0; i < s->num_cs; ++i) {
+        sysbus_init_irq(dev, &s->cs_lines[i]);
+    }
+
+    /* DMA hardware handshake */
+    qdev_init_gpio_in(&s->busdev.qdev, ftssp010_handle_ack, 2);
+    qdev_init_gpio_out(&s->busdev.qdev, s->req, 2);
+    return 0;
+}
+
+static const VMStateDescription vmstate_ftssp010 = {
+    .name = TYPE_FTSSP010,
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(cr0, Ftssp010State),
+        VMSTATE_UINT32(cr1, Ftssp010State),
+        VMSTATE_UINT32(cr2, Ftssp010State),
+        VMSTATE_UINT32(icr, Ftssp010State),
+        VMSTATE_UINT32(isr, Ftssp010State),
+        VMSTATE_FIFO8(tx_fifo, Ftssp010State),
+        VMSTATE_FIFO8(rx_fifo, Ftssp010State),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void ftssp010_class_init(ObjectClass *klass, void *data)
+{
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    k->init     = ftssp010_init;
+    dc->vmsd    = &vmstate_ftssp010;
+    dc->reset   = ftssp010_reset;
+    dc->no_user = 1;
+}
+
+static const TypeInfo ftssp010_info = {
+    .name           = TYPE_FTSSP010,
+    .parent         = TYPE_SYS_BUS_DEVICE,
+    .instance_size  = sizeof(Ftssp010State),
+    .class_init     = ftssp010_class_init,
+};
+
+static void ftssp010_register_types(void)
+{
+    type_register_static(&ftssp010_info);
+}
+
+type_init(ftssp010_register_types)
diff --git a/hw/arm/ftssp010.h b/hw/arm/ftssp010.h
new file mode 100644
index 0000000..e3d3e7a
--- /dev/null
+++ b/hw/arm/ftssp010.h
@@ -0,0 +1,96 @@ 
+/*
+ * QEMU model of the FTSSP010 Controller
+ *
+ * Copyright (C) 2012 Faraday Technology
+ * Written by Dante Su <dantesu@faraday-tech.com>
+ *
+ * This file is licensed under GNU GPL v2+.
+ */
+
+#ifndef HW_ARM_FTSSP010_H
+#define HW_ARM_FTSSP010_H
+
+/* FTSSP010: Registers */
+#define REG_CR0             0x00    /* control register 0 */
+#define REG_CR1             0x04    /* control register 1 */
+#define REG_CR2             0x08    /* control register 2 */
+#define REG_SR              0x0C    /* status register */
+#define REG_ICR             0X10    /* interrupt control register */
+#define REG_ISR             0x14    /* interrupt statis register */
+#define REG_DR              0x18    /* data register */
+#define REG_REVR            0x60    /* revision register */
+#define REG_FEAR            0x64    /* feature register */
+
+/* Control register 0  */
+
+#define CR0_FFMT_MASK       (7 << 12)
+#define CR0_FFMT_SSP        (0 << 12)
+#define CR0_FFMT_SPI        (1 << 12)
+#define CR0_FFMT_MICROWIRE  (2 << 12)
+#define CR0_FFMT_I2S        (3 << 12)
+#define CR0_FFMT_AC97       (4 << 12)
+#define CR0_FLASH           (1 << 11)
+#define CR0_FSDIST(x)       (((x) & 0x03) << 8)
+#define CR0_LBM             (1 << 7)  /* Loopback mode */
+#define CR0_LSB             (1 << 6)  /* LSB first */
+#define CR0_FSPO            (1 << 5)  /* Frame sync atcive low */
+#define CR0_FSJUSTIFY       (1 << 4)
+#define CR0_OPM_SLAVE       (0 << 2)
+#define CR0_OPM_MASTER      (3 << 2)
+#define CR0_OPM_I2S_MSST    (3 << 2)  /* Master stereo mode */
+#define CR0_OPM_I2S_MSMO    (2 << 2)  /* Master mono mode */
+#define CR0_OPM_I2S_SLST    (1 << 2)  /* Slave stereo mode */
+#define CR0_OPM_I2S_SLMO    (0 << 2)  /* Slave mono mode */
+#define CR0_SCLKPO          (1 << 1)  /* SCLK Remain HIGH */
+#define CR0_SCLKPH          (1 << 0)  /* Half CLK cycle */
+
+/* Control Register 1 */
+
+/* padding data length */
+#define CR1_PDL(x)          (((x) & 0xff) << 24)
+/* serial data length(actual data length-1) */
+#define CR1_SDL(x)          ((((x) - 1) & 0x1f) << 16)
+/*  clk divider */
+#define CR1_CLKDIV(x)       ((x) & 0xffff)
+
+/* Control Register 2 */
+#define CR2_FSOS(x)         (((x) & 0x03) << 10)        /* FS/CS Select */
+#define CR2_FS              (1 << 9)    /* FS/CS Signal Level */
+#define CR2_TXEN            (1 << 8)    /* Tx Enable */
+#define CR2_RXEN            (1 << 7)    /* Rx Enable */
+#define CR2_SSPRST          (1 << 6)    /* SSP reset */
+#define CR2_TXFCLR          (1 << 3)    /* TX FIFO Clear */
+#define CR2_RXFCLR          (1 << 2)    /* RX FIFO Clear */
+#define CR2_TXDOE           (1 << 1)    /* TX Data Output Enable */
+#define CR2_SSPEN           (1 << 0)    /* SSP Enable */
+
+/*
+ * Status Register
+ */
+#define SR_TFVE(reg)        (((reg) & 0x1F) << 12)
+#define SR_RFVE(reg)        (((reg) & 0x1F) << 4)
+#define SR_BUSY             (1 << 2)
+#define SR_TFNF             (1 << 1)    /* Tx FIFO Not Full */
+#define SR_RFF              (1 << 0)    /* Rx FIFO Full */
+
+/* Interrupr Control Register */
+#define ICR_TFTHOD(x)       (((x) & 0x1f) << 12)/* TX FIFO Threshold */
+#define ICR_RFTHOD(x)       (((x) & 0x1f) << 7) /* RX FIFO Threshold */
+#define ICR_AC97I           0x40      /* AC97 intr enable */
+#define ICR_TFDMA           0x20      /* TX DMA enable */
+#define ICR_RFDMA           0x10      /* RX DMA enable */
+#define ICR_TFTHI           0x08      /* TX FIFO intr enable */
+#define ICR_RFTHI           0x04      /* RX FIFO intr enable */
+#define ICR_TFURI           0x02      /* TX FIFO Underrun intr enable */
+#define ICR_RFORI           0x01      /* RX FIFO Overrun intr enable */
+
+/* Interrupr Status Register */
+#define ISR_AC97I           0x10      /* AC97 interrupt */
+#define ISR_TFTHI           0x08      /* TX FIFO interrupt */
+#define ISR_RFTHI           0x04      /* RX FIFO interrupt */
+#define ISR_TFURI           0x02      /* TX FIFO Underrun interrupt */
+#define ISR_RFORI           0x01      /* RX FIFO Overrun interrupt */
+/* Read-Clear status mask */
+#define ISR_RCMASK          (ISR_RFORI | ISR_TFURI | ISR_AC97I)
+
+#endif