[PATCH 3/3 v2] sound/soc/lapis: add platform driver for ML7213 IOH I2S
From: Tomoya MORINAGA
Date: Mon Dec 19 2011 - 21:48:18 EST
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>
---
V2
- Delete unused module_param "index"
- Re-desing data structure. So, some internal functions interface are changed
- Add dai interface functions (Includes format, sysclk, clkdiv)
- Delete snd_device_new, snd_card_create snd_card_register
---
sound/soc/lapis/Kconfig | 5 +
sound/soc/lapis/Makefile | 2 +
sound/soc/lapis/ioh_i2s.h | 39 +
sound/soc/lapis/ml7213ioh-plat.c | 2033 ++++++++++++++++++++++++++++++++++++++
sound/soc/lapis/ml7213ioh-plat.h | 583 +++++++++++
5 files changed, 2662 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/lapis/ioh_i2s.h
create mode 100644 sound/soc/lapis/ml7213ioh-plat.c
create mode 100644 sound/soc/lapis/ml7213ioh-plat.h
diff --git a/sound/soc/lapis/Kconfig b/sound/soc/lapis/Kconfig
index f6c2fe5..e10e729 100644
--- a/sound/soc/lapis/Kconfig
+++ b/sound/soc/lapis/Kconfig
@@ -1,3 +1,8 @@
+config SND_SOC_ML7213_PLATFORM
+ tristate "ML7213 IOH ASoC platform driver"
+ help
+ This option enables support for the AC Link Controllers in ML7213 IOH SoC.
+
config SND_SOC_ML7213_MACHINE
tristate "ML7213 IOH ASoC machine driver"
select SND_SOC_ML7213_PLATFORM
diff --git a/sound/soc/lapis/Makefile b/sound/soc/lapis/Makefile
index cdb196a..812290b 100644
--- a/sound/soc/lapis/Makefile
+++ b/sound/soc/lapis/Makefile
@@ -1,4 +1,6 @@
# Platform
snd-soc-ml7213-machine-objs := ml7213ioh-machine.o
+snd-soc-ml7213-plat-objs := ml7213ioh-plat.o
obj-$(CONFIG_SND_SOC_ML7213_MACHINE) += snd-soc-ml7213-machine.o
+obj-$(CONFIG_SND_SOC_ML7213_PLATFORM) += snd-soc-ml7213-plat.o
diff --git a/sound/soc/lapis/ioh_i2s.h b/sound/soc/lapis/ioh_i2s.h
new file mode 100644
index 0000000..9f19f70
--- /dev/null
+++ b/sound/soc/lapis/ioh_i2s.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef ML7213_IOH_I2S
+#define ML7213_IOH_I2S
+
+enum ioh_bclkfs {
+ ML7213IOH_BCLKFS0 = 0,
+ ML7213IOH_BCLKFS1,
+ ML7213IOH_BCLKFS2,
+ ML7213IOH_BCLKFS3,
+ ML7213IOH_BCLKFS4,
+ ML7213IOH_BCLKFS5,
+};
+
+enum ioh_mclkfs {
+ ML7213IOH_MCLKFS0 = 6,
+ ML7213IOH_MCLKFS1,
+ ML7213IOH_MCLKFS2,
+ ML7213IOH_MCLKFS3,
+ ML7213IOH_MCLKFS4,
+ ML7213IOH_MCLKFS5,
+};
+
+#endif
diff --git a/sound/soc/lapis/ml7213ioh-plat.c b/sound/soc/lapis/ml7213ioh-plat.c
new file mode 100644
index 0000000..4b9ed3c
--- /dev/null
+++ b/sound/soc/lapis/ml7213ioh-plat.c
@@ -0,0 +1,2033 @@
+/*
+ * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+
+#include "ioh_i2s.h"
+#include "ml7213ioh-plat.h"
+
+static struct ioh_i2s_data *i2s_data;
+static struct ioh_i2s_dma dmadata[MAX_I2S_CH];
+static int ignore_overrun = 1;
+module_param(ignore_overrun, int, 0444);
+MODULE_PARM_DESC(ignore_overrun, "ignore RX overruns (default=0)");
+
+/*****************************************************************************
+ * I2S HAL (Hardware Abstruction Layer)
+ *****************************************************************************/
+static void ioh_i2s_reset(int ch)
+{
+ iowrite32(1 << ch, i2s_data->iobase + I2SSRST_OFFSET);
+ iowrite32(0, i2s_data->iobase + I2SSRST_OFFSET);
+}
+
+static void ioh_i2s_enable_interrupts(int ch, enum dma_data_direction dir)
+{
+ unsigned int intr_lines;
+
+ if (dir)
+ intr_lines = 1 << (I2S_IMASK_RX_BIT_START + ch);
+
+ else
+ intr_lines = 1 << (I2S_IMASK_TX_BIT_START + ch);
+
+ /*enable interrupts for specified channel */
+ iowrite32(intr_lines, i2s_data->iobase + I2SIMASKCLR_OFFSET);
+}
+
+static void ioh_i2s_disable_interrupts(int ch, enum dma_data_direction dir)
+{
+ unsigned int intr_lines;
+
+ /*intr_lines&=I2S_ALL_INTERRUPT_BITS; */
+ intr_lines = ioread32(i2s_data->iobase + I2SIMASK_OFFSET);
+
+ /*disable interrupts for specified channel */
+ if (dir)
+ intr_lines |= 1 << (I2S_IMASK_RX_BIT_START + ch);
+ else
+ intr_lines |= 1 << (I2S_IMASK_TX_BIT_START + ch);
+
+ /*Mask the specific interrupt bits */
+ iowrite32(intr_lines, i2s_data->iobase + I2SIMASK_OFFSET);
+}
+
+/* Run FIFO */
+static void ioh_i2s_run_tx_fifo(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SFIFOCTX_OFFSET + offset);
+ val |= I2S_FIFO_TX_RUN;
+
+ iowrite32(val, i2s_data->iobase + I2SFIFOCTX_OFFSET + offset);
+}
+
+/* Clear TX FIFO */
+static void ioh_i2s_clear_tx_fifo(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SFIFOCTX_OFFSET + offset);
+ val |= I2S_FIFO_TX_FCLR;
+
+ iowrite32(val, i2s_data->iobase + I2SFIFOCTX_OFFSET + offset);
+}
+
+/* Clear interrupt status */
+static void ioh_i2s_clear_tx_sts_ir(int ch)
+{
+ int offset = ch * 0x800;
+
+ iowrite32(I2S_TX_FINT | I2S_TX_AFINT | I2S_TX_EINT | I2S_TX_AEINT,
+ i2s_data->iobase + I2SISTTX_OFFSET + offset);
+}
+
+/* Run FIFO */
+static void ioh_i2s_run_rx_fifo(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SFIFOCRX_OFFSET + offset);
+ val |= I2S_FIFO_RX_RUN;
+ iowrite32(val, i2s_data->iobase + I2SFIFOCRX_OFFSET + offset);
+}
+
+/* Clear RX FIFO */
+static void ioh_i2s_clear_rx_fifo(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SFIFOCRX_OFFSET + offset);
+ val |= I2S_FIFO_RX_FCLR;
+ iowrite32(val, i2s_data->iobase + I2SFIFOCRX_OFFSET + offset);
+}
+
+/* Clear interrupt status */
+static void ioh_i2s_clear_rx_sts_ir(int ch)
+{
+ int offset = ch * 0x800;
+
+ iowrite32(I2S_RX_FINT | I2S_RX_AFINT | I2S_RX_EINT | I2S_RX_AEINT,
+ i2s_data->iobase + I2SISTRX_OFFSET + offset);
+}
+
+/* Clear DMA mask setting */
+static void ioh_i2s_tx_clear_dma_mask(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+ val &= ~TX_BIT_DMAMSK; /* Enable Tx DMA Request */
+
+ iowrite32(val, i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+}
+
+/* Clear DMA mask setting */
+static void ioh_i2s_rx_clear_dma_mask(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+ val &= ~RX_BIT_DMAMSK; /* Enable Rx DMA Request */
+ iowrite32(val, i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+}
+
+/* Clear the mask setting of the corresponding interrupt source bit */
+static void ioh_i2s_enable_tx_empty_ir(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+ val &= ~TX_BIT_AEIMSK; /* Enable Almost empty interrupt */
+ val &= ~TX_BIT_EIMSK; /* Enable Empty interrupt */
+
+ iowrite32(val, i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+}
+
+/* Clear the mask setting of the corresponding interrupt source bit */
+static void ioh_i2s_enable_rx_full_ir(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+ val = ioread32(i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+
+ val &= ~RX_BIT_AFIMSK; /* Enable Almost empty interrupt */
+ val &= ~RX_BIT_FIMSK; /* Enable Empty interrupt */
+
+ iowrite32(val, i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+}
+
+static void ioh_i2s_disable_tx_empty_ir(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+ val |= TX_BIT_AEIMSK; /* Disble Almost empty interrupt */
+ val |= TX_BIT_EIMSK; /* Disble Empty interrupt */
+
+ iowrite32(val, i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+}
+
+static void ioh_i2s_disable_rx_full_ir(int ch)
+{
+ int offset = ch * 0x800;
+ u32 val;
+
+ val = ioread32(i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+ val |= RX_BIT_AFIMSK; /* Disble Almost full interrupt */
+ val |= RX_BIT_FIMSK; /* Disble full interrupt */
+
+ iowrite32(val, i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+}
+
+/*****************************************************************************
+ * I2S Middle ware
+ *****************************************************************************/
+static bool filter(struct dma_chan *chan, void *slave)
+{
+ struct pch_dma_slave *param = slave;
+
+ if ((chan->chan_id == param->chan_id) && (param->dma_dev ==
+ chan->device->dev)) {
+ chan->private = param;
+ return true;
+ } else {
+ return false;
+ }
+}
+
+static struct dma_chan *ioh_request_dma_channel(
+ int ch, struct ioh_i2s_dma *dma, enum dma_data_direction dir)
+{
+ dma_cap_mask_t mask;
+ struct dma_chan *chan;
+ struct pci_dev *dma_dev;
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ dma_dev = pci_get_bus_and_slot(2, PCI_DEVFN(0, 1)); /* Get DMA's dev
+ information */
+
+ if (dir == DMA_FROM_DEVICE) { /* Rx */
+ dma->param_rx.width = dma->dma_rx_width;
+ dma->param_rx.dma_dev = &dma_dev->dev;
+ dma->param_rx.chan_id = ch * 2 + 1; /* ch Rx=1,3,...11 */
+ dma->param_rx.rx_reg = (dma_addr_t)(i2s_data->mapbase +\
+ ch * 0x800 + I2SDRRXMIRROR_OFFSET);
+ chan = dma_request_channel(mask, filter, &dma->param_rx);
+ if (chan == NULL) {
+ dev_err(i2s_data->dev, "Failed dma_request_channel for"
+ " I2S %d\n", ch);
+ return NULL;
+ }
+ dma->chan_rx = chan;
+
+ } else if (dir == DMA_TO_DEVICE) { /* Tx */
+ dma->param_tx.width = dma->dma_tx_width;
+ dma->param_tx.dma_dev = &dma_dev->dev;
+ dma->param_tx.chan_id = ch * 2; /* DMA ch Tx=0,2,...10 */
+
+ dma->param_tx.tx_reg = (dma_addr_t)(i2s_data->mapbase +\
+ ch * 0x800 + I2SDRTXMIRROR_OFFSET);
+
+ chan = dma_request_channel(mask, filter, &dma->param_tx);
+ if (chan == NULL) {
+ dev_err(i2s_data->dev, "Failed dma_request_channel for"
+ " I2S %d\n", ch);
+ return NULL;
+ }
+ dma->chan_tx = chan;
+ } else {
+ dev_err(i2s_data->dev, "Invalid direction (%d)\n", dir);
+ return NULL;
+ }
+
+ return chan;
+}
+
+static void ioh_i2s_ignore_rx_overrun(void)
+{
+ i2s_data->ignore_rx_overrun = 1;
+}
+
+static void
+ioh_i2s_write(struct snd_pcm_substream *substream, const void *data, int len)
+{
+ int rem1;
+ int rem2;
+ int tx_index;
+ int ch = substream->number;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+ struct scatterlist *sg = dma->sg_tx_p;
+ int t_num = 0;
+ int l;
+ int *ptr_fmt;
+ int *ptr32;
+ short *ptr16;
+ char *ptr8;
+ int tx_unit = dmadata[ch].dma_tx_unit;
+ struct device *dev = substream->pcm->card->dev;
+
+ if (dma->tx_avail >= INTER_BUFF_SIZE) {
+ dev_err(dev, "%s[%d]: internal buffer full\n",
+ __func__, ch);
+ return;
+ }
+
+ dev_dbg(dev, "%s: [ch%d] len=%d data_head=%p data_complete=%p",
+ __func__, ch, len, dma->tx_data_head, dma->tx_complete);
+
+ if ((dma->tx_data_head + ((len/tx_unit) * 4)) <= dma->tx_tail) {
+ tx_index = (int)(dma->tx_data_head - dma->tx_head) /
+ (I2S_AEMPTY_THRESH * 4);
+ sg = sg + tx_index;
+ t_num = len/(I2S_AEMPTY_THRESH * tx_unit);
+ dma_sync_sg_for_cpu(dev, sg, t_num, DMA_TO_DEVICE);
+
+ ptr_fmt = (int *)dma->tx_data_head;
+ switch (tx_unit) {
+ case 1:
+ ptr8 = (char *)data;
+ for (l = 0; l < (len/tx_unit); l++)
+ *ptr_fmt++ = (int)*ptr8++;
+ break;
+ case 2:
+ ptr16 = (short *)data;
+ for (l = 0; l < (len/tx_unit); l++)
+ *ptr_fmt++ = (int)*ptr16++;
+ break;
+ case 4:
+ ptr32 = (int *)data;
+ for (l = 0; l < (len/tx_unit); l++)
+ *ptr_fmt++ = *ptr32++;
+ break;
+ }
+ dma_sync_sg_for_device(dev, sg, t_num, DMA_TO_DEVICE);
+ dma->tx_data_head += (len/tx_unit) * 4;
+ } else {
+ rem1 = (dma->tx_tail - dma->tx_data_head) / 4;
+ rem2 = (len/tx_unit) - rem1;
+ tx_index = (int)(dma->tx_data_head-dma->tx_head) /
+ (I2S_AEMPTY_THRESH * 4);
+ sg = sg + tx_index;
+ t_num = rem1/I2S_AEMPTY_THRESH;
+ dma_sync_sg_for_cpu(dev, sg, t_num, DMA_TO_DEVICE);
+ ptr_fmt = (int *)dma->tx_data_head;
+ switch (tx_unit) {
+ case 1:
+ ptr8 = (char *)data;
+ for (l = 0; l < rem1; l++)
+ *ptr_fmt++ = (int)*ptr8++;
+ break;
+ case 2:
+ ptr16 = (short *)data;
+ for (l = 0; l < rem1; l++)
+ *ptr_fmt++ = (int)*ptr16++;
+ break;
+ case 4:
+ ptr32 = (int *)data;
+ for (l = 0; l < rem1; l++)
+ *ptr_fmt++ = *ptr32++;
+ break;
+ }
+
+ dma_sync_sg_for_device(dev, sg, t_num, DMA_TO_DEVICE);
+ dma->tx_data_head = dma->tx_head;
+ sg = dma->sg_tx_p;
+ t_num = rem2/I2S_AEMPTY_THRESH;
+ dma_sync_sg_for_cpu(dev, sg, t_num, DMA_TO_DEVICE);
+
+ ptr_fmt = (int *)dma->tx_data_head;
+
+ switch (tx_unit) {
+ case 1:
+ ptr8 = (char *)(data+rem1*tx_unit);
+ for (l = 0; l < rem2; l++)
+ *ptr_fmt++ = (int)*ptr8++;
+ break;
+ case 2:
+ ptr16 = (short *)(data+rem1*tx_unit);
+ for (l = 0; l < rem2; l++)
+ *ptr_fmt++ = (int)*ptr16++;
+ break;
+ case 4:
+ ptr32 = (int *)(data+rem1*tx_unit);
+ for (l = 0; l < rem2; l++)
+ *ptr_fmt++ = *ptr32++;
+ break;
+ }
+
+ dma_sync_sg_for_device(dev, sg, t_num, DMA_TO_DEVICE);
+ dma->tx_data_head += rem2 * 4;
+ }
+
+ if (dma->tx_data_head >= dma->tx_tail)
+ dma->tx_data_head = dma->tx_head;
+
+ dev_dbg(dev, "-->data_head=%p\n", dma->tx_data_head);
+
+ dma->tx_avail += (len/tx_unit) * 4;
+}
+
+static void ioh_i2s_stop_i2s_regs(int ch, enum ioh_direction dir)
+{
+ if (dir) {
+ /* Interrupt stop */
+ ioh_i2s_disable_rx_full_ir(ch);
+
+ /* FIFO setting */
+ ioh_i2s_clear_rx_fifo(ch);
+ ioh_i2s_clear_rx_sts_ir(ch);
+ } else {
+ /* Interrupt stop */
+ ioh_i2s_disable_tx_empty_ir(ch);
+
+ /* FIFO setting */
+ ioh_i2s_clear_tx_fifo(ch);
+ ioh_i2s_clear_tx_sts_ir(ch);
+ }
+}
+
+static void ioh_i2s_configure_i2s_regs(int ch, enum ioh_direction dir)
+{
+ int offset = ch * 0x800;
+
+ if (dir) {
+ /* Rx register */
+ iowrite32(I2S_AFULL_THRESH / 2,
+ i2s_data->iobase + I2SAFRX_OFFSET + offset);
+ iowrite32(0x1F, i2s_data->iobase + I2SAERX_OFFSET + offset);
+ iowrite32(0x1F, i2s_data->iobase + I2SMSKRX_OFFSET + offset);
+ iowrite32(0xC, i2s_data->iobase + I2SISTRX_OFFSET + offset);
+
+ /* FIFO setting */
+ ioh_i2s_clear_rx_fifo(ch);
+ ioh_i2s_run_rx_fifo(ch);
+
+ /* Interrupt setting */
+ ioh_i2s_clear_rx_sts_ir(ch);
+ ioh_i2s_enable_rx_full_ir(ch);
+
+ } else {
+ iowrite32(0x0, i2s_data->iobase + I2SAFTX_OFFSET + offset);
+ iowrite32(I2S_AEMPTY_THRESH / 2,
+ i2s_data->iobase + I2SAETX_OFFSET + offset);
+ iowrite32(0x1F, i2s_data->iobase + I2SMSKTX_OFFSET + offset);
+ iowrite32(0xC, i2s_data->iobase + I2SISTTX_OFFSET + offset);
+
+ /* FIFO setting */
+ ioh_i2s_clear_tx_fifo(ch);
+ ioh_i2s_run_tx_fifo(ch);
+
+ /* Interrupt setting */
+ ioh_i2s_clear_tx_sts_ir(ch);
+ ioh_i2s_enable_tx_empty_ir(ch);
+ }
+}
+
+static void i2s_rx_tasklet(unsigned long data)
+{
+ struct ioh_i2s_data *priv = (struct ioh_i2s_data *)data;
+ struct ioh_i2s_dma *dma = &dmadata[priv->ch];
+ int num = 0;
+
+ if (dma->rxexe_flag) {
+ if (dma->rx_done) {
+ switch (dma->dma_rx_unit) {
+ case 1:
+ num = dma->rx_avail / 4;
+ break;
+ case 2:
+ num = dma->rx_avail / 2;
+ break;
+ case 4:
+ num = dma->rx_avail;
+ break;
+ }
+ dma->rx_done(dma->rx_callback_data, IOH_EOK, num, num);
+ }
+ }
+}
+
+static void i2s_tx_tasklet(unsigned long data)
+{
+ struct ioh_i2s_data *priv = (struct ioh_i2s_data *)data;
+ struct ioh_i2s_dma *dma = &dmadata[priv->ch];
+ int num = 0;
+ int avail = 0;
+
+ if (dma->txexe_flag) {
+ if (dma->tx_done) {
+ switch (dmadata[priv->ch].dma_tx_unit) {
+ case 1:
+ num = (INTER_BUFF_SIZE - dma->tx_avail) / 4;
+ avail = dma->tx_avail / 4;
+ break;
+ case 2:
+ num = (INTER_BUFF_SIZE - dma->tx_avail) / 2;
+ avail = dma->tx_avail / 2;
+ break;
+ case 4:
+ num = (INTER_BUFF_SIZE - dma->tx_avail);
+ avail = dma->tx_avail;
+ break;
+ }
+ dma->tx_done(dma->tx_callback_data,
+ IOH_EOK, num, avail);
+ }
+ }
+}
+
+static void ioh_i2s_release(int ch, enum ioh_direction dir)
+{
+ struct ioh_i2s_dma *dma;
+
+ dma = &dmadata[ch];
+ if (dir) {
+ dma_sync_sg_for_cpu(i2s_data->dev, dma->sg_rx_p, dma->rx_nent,
+ DMA_FROM_DEVICE);
+
+ ioh_i2s_disable_interrupts(ch, IOH_CAPTURE);
+ ioh_i2s_disable_rx_full_ir(ch);
+ if (dma->chan_rx) {
+ dma->chan_rx->device->device_control(dma->chan_rx,
+ DMA_TERMINATE_ALL,
+ 0);
+ dma_release_channel(dma->chan_rx);
+ dma->chan_rx = NULL;
+ }
+
+ kfree(dma->sg_rx_p);
+ if (dma->rxbuf_virt)
+ dma_free_coherent(i2s_data->dev, INTER_BUFF_SIZE,
+ dma->rxbuf_virt, dma->rx_buf_dma);
+
+ dma->rxbuf_virt = NULL;
+ dma->rx_buf_dma = 0;
+ atomic_dec(&dma->rx_busy);
+
+ tasklet_disable(&dma->rx_tasklet);
+ tasklet_kill(&dma->rx_tasklet);
+
+ } else {
+ dma_sync_sg_for_cpu(i2s_data->dev, dma->sg_tx_p, dma->tx_nent,
+ DMA_TO_DEVICE);
+
+ ioh_i2s_disable_interrupts(ch, IOH_PLAYBACK);
+ ioh_i2s_disable_tx_empty_ir(ch);
+ if (dma->chan_tx) {
+ dma->chan_tx->device->device_control(dma->chan_tx,
+ DMA_TERMINATE_ALL,
+ 0);
+ dma_release_channel(dma->chan_tx);
+ dma->chan_tx = NULL;
+ }
+
+ kfree(dma->sg_tx_p);
+ if (dma->txbuf_virt)
+ dma_free_coherent(i2s_data->dev, INTER_BUFF_SIZE,
+ dma->txbuf_virt, dma->tx_buf_dma);
+
+ dma->txbuf_virt = NULL;
+ dma->tx_buf_dma = 0;
+ atomic_dec(&dma->tx_busy);
+
+ tasklet_disable(&dma->tx_tasklet);
+ tasklet_kill(&dma->tx_tasklet);
+ }
+}
+
+static struct ioh_i2s_data *ioh_i2s_open(int ch, enum ioh_direction dir,
+ const char *name)
+{
+ struct ioh_i2s_data *obj = NULL;
+ struct scatterlist *sg;
+ int rx_size;
+ int rx_num;
+ int tx_size;
+ int tx_num;
+ int i;
+ struct ioh_i2s_dma *dma;
+
+ if (ch >= MAX_I2S_CH) {
+ dev_err(obj->dev,
+ "Tried to open i2s with number %d which is more then"
+ " the available number\n", ch);
+ return 0;
+ }
+
+ dma = &dmadata[ch];
+ i2s_data = kzalloc(sizeof(*i2s_data), GFP_KERNEL);
+ i2s_data->ignore_rx_overrun = 0;
+
+ atomic_set(&dma->rx_busy, 0);
+ atomic_set(&dma->tx_busy, 0);
+
+ dma->dma_tx_width = PCH_DMA_WIDTH_4_BYTES;
+ dma->dma_rx_width = PCH_DMA_WIDTH_4_BYTES;
+
+ if (dir) {
+ /* Rx configuration */
+ if (atomic_read(&dma->rx_busy)) {
+ dev_err(i2s_data->dev, "rx i2s%dalready opened\n", ch);
+ atomic_dec(&dma->rx_busy);
+ return NULL;
+ }
+ atomic_inc(&dma->rx_busy);
+
+ ioh_request_dma_channel(ch, dma, DMA_FROM_DEVICE);
+ if (!dma->chan_rx) {
+ dev_err(obj->dev, "%s:ioh_setup_rx_dma failed\n",
+ __func__);
+ return NULL;
+ }
+
+ dma->rxbuf_virt = dma_alloc_coherent(obj->dev, INTER_BUFF_SIZE,
+ &dma->rx_buf_dma, GFP_KERNEL);
+ if (!dma->rxbuf_virt) {
+ dev_err(obj->dev, "dma_alloc_coherent Failed\n");
+ return NULL;
+ }
+
+ rx_size = I2S_AFULL_THRESH * 4;
+ /* The number of scatter list (Franction area is not used) */
+ rx_num = INTER_BUFF_SIZE / rx_size;
+
+ dev_dbg(obj->dev, "%s: rx: scatter_num=%d scatter_size=%d\n",
+ __func__, rx_num, rx_size);
+
+ dma->sg_rx_p =\
+ kzalloc(sizeof(struct scatterlist) * rx_num, GFP_ATOMIC);
+
+ sg = dma->sg_rx_p;
+ sg_init_table(sg, rx_num); /* Initialize SG table */
+
+ for (i = 0; i < rx_num; i++, sg++) {
+ sg_set_page(sg, virt_to_page(dma->rxbuf_virt), rx_size,
+ rx_size * i);
+ sg_dma_len(sg) = rx_size / 4;
+ sg_dma_address(sg) = dma->rx_buf_dma + sg->offset;
+ }
+
+ dma->rx_head = (unsigned char *)dma->rxbuf_virt;
+ dma->rx_tail = (unsigned char *)dma->rxbuf_virt +
+ rx_num * rx_size;
+ dma->rx_data_head = (unsigned char *)dma->rxbuf_virt;
+ dma->rx_complete = (unsigned char *)dma->rxbuf_virt;
+ dma->rx_avail = 0;
+
+ dma->rx_nent = rx_num;
+ dma_sync_sg_for_device(obj->dev, dma->sg_rx_p, dma->rx_nent,
+ DMA_FROM_DEVICE);
+
+ tasklet_init(&dma->rx_tasklet, i2s_rx_tasklet,
+ (unsigned long)obj);
+ } else {
+ /* Tx configuration */
+ if (atomic_read(&dma->tx_busy)) {
+ dev_err(obj->dev, "tx i2s%d have already opened\n", ch);
+ atomic_dec(&dma->tx_busy);
+ return NULL;
+ }
+ atomic_inc(&dma->tx_busy);
+
+ ioh_request_dma_channel(ch, dma, DMA_TO_DEVICE);
+
+ if (!dma->chan_tx) {
+ dev_err(obj->dev, "%s:ioh_setup_tx_dma failed\n",
+ __func__);
+ return NULL;
+ }
+
+ tx_size = I2S_AEMPTY_THRESH * 4;
+ if (INTER_BUFF_SIZE % tx_size)
+ /* tx_num = The number of scatter list */
+ tx_num = INTER_BUFF_SIZE / tx_size + 1;
+ else
+ tx_num = INTER_BUFF_SIZE / tx_size;
+
+ dma->txbuf_virt = dma_alloc_coherent(obj->dev, INTER_BUFF_SIZE,
+ &dma->tx_buf_dma, GFP_KERNEL);
+
+ if (!dma->txbuf_virt) {
+ dev_err(obj->dev, "dma_alloc_coherent Failed\n");
+ return NULL;
+ }
+
+ dma->tx_head = (unsigned char *)dma->txbuf_virt;
+ dma->tx_tail = (unsigned char *)dma->txbuf_virt +
+ INTER_BUFF_SIZE;
+ dma->tx_data_head = (unsigned char *)dma->txbuf_virt;
+ dma->tx_complete = (unsigned char *)dma->txbuf_virt;
+ dma->tx_avail = 0;
+
+ dev_dbg(obj->dev, "%s: tx: scatter_num=%d scatter_size=%d\n",
+ __func__, tx_num, tx_size);
+
+ dma->sg_tx_p =\
+ kzalloc(sizeof(struct scatterlist) * tx_num, GFP_ATOMIC);
+
+ sg_init_table(dma->sg_tx_p, tx_num); /* Initialize SG table */
+ sg = dma->sg_tx_p;
+
+ for (i = 0; i < tx_num; i++, sg++) {
+ if (i == (tx_num - 1)) {
+ if (INTER_BUFF_SIZE % tx_size) {
+ sg_set_page(sg,
+ virt_to_page(dma->txbuf_virt),
+ INTER_BUFF_SIZE % tx_size,
+ tx_size * i);
+ sg_dma_len(sg) =
+ (INTER_BUFF_SIZE % tx_size)
+ / 4;
+ } else {
+ sg_set_page(sg,
+ virt_to_page(dma->txbuf_virt),
+ tx_size, tx_size * i);
+ sg_dma_len(sg) = tx_size / 4;
+ }
+ } else {
+ sg_set_page(sg, virt_to_page(dma->txbuf_virt),
+ tx_size, tx_size * i);
+ sg_dma_len(sg) = tx_size / 4;
+ }
+ sg_dma_address(sg) = dma->tx_buf_dma + sg->offset;
+ }
+ dma->tx_nent = tx_num;
+ dma_sync_sg_for_device(obj->dev, dma->sg_tx_p, dma->tx_nent,
+ DMA_TO_DEVICE);
+
+ tasklet_init(&dma->tx_tasklet, i2s_tx_tasklet,
+ (unsigned long)obj);
+ }
+
+ return obj;
+}
+
+static void
+ioh_i2s_read(struct snd_pcm_substream *substream, void *data, int len)
+{
+ unsigned int rem1 = 0, rem2 = 0;
+ int ch = substream->number;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+ struct scatterlist *sg = dma->sg_rx_p;
+ int rx_index;
+ int t_num = 0;
+ int *ptr_fmt;
+ int *ptr32;
+ short *ptr16;
+ char *ptr8;
+ int l;
+ int rx_unit = dma->dma_rx_unit;
+ struct device *dev = substream->pcm->card->dev;
+
+ switch (rx_unit) {
+ case 1:
+ t_num = dma->rx_avail / 4;
+ break;
+ case 2:
+ t_num = dma->rx_avail / 2;
+ break;
+ case 4:
+ t_num = dma->rx_avail;
+ break;
+ }
+
+ if (t_num < len) {
+ dev_err(dev, "%s[%d]: internal buffer empty\n",
+ __func__, ch);
+ return;
+ }
+
+ if ((dma->rx_complete + ((len/rx_unit) * 4)) <= dma->rx_tail) {
+ rx_index = (int)(dma->rx_complete - dma->rx_head) /
+ (I2S_AFULL_THRESH * 4);
+ sg = sg + rx_index;
+ t_num = len/(I2S_AFULL_THRESH * rx_unit);
+ dma_sync_sg_for_cpu(dev, sg, t_num, DMA_FROM_DEVICE);
+
+ ptr_fmt = (int *)dma->rx_complete;
+ switch (rx_unit) {
+ case 1:
+ ptr8 = (char *)data;
+ for (l = 0; l < (len/rx_unit); l++)
+ *ptr8++ = (char)*ptr_fmt++;
+ break;
+ case 2:
+ ptr16 = (short *)data;
+ for (l = 0; l < (len/rx_unit); l++)
+ *ptr16++ = (short)*ptr_fmt++;
+ break;
+ case 4:
+ ptr32 = (int *)data;
+ for (l = 0; l < (len/rx_unit); l++)
+ *ptr32++ = *ptr_fmt++;
+ break;
+ }
+ dma_sync_sg_for_device(dev, sg, t_num, DMA_FROM_DEVICE);
+ dma->rx_complete += (len/rx_unit) * 4;
+ } else {
+ rem1 = (dma->rx_tail - dma->rx_complete) / 4;
+ rem2 = (len/rx_unit) - rem1;
+ rx_index = (int)(dma->rx_complete-dma->rx_head) /
+ (I2S_AFULL_THRESH * 4);
+ sg = sg + rx_index;
+ t_num = rem1/I2S_AFULL_THRESH;
+ dma_sync_sg_for_cpu(dev, sg, t_num, DMA_FROM_DEVICE);
+ ptr_fmt = (int *)dma->rx_complete;
+ switch (rx_unit) {
+ case 1:
+ ptr8 = (char *)data;
+ for (l = 0; l < rem1; l++)
+ *ptr8++ = (char)*ptr_fmt++;
+ break;
+ case 2:
+ ptr16 = (short *)data;
+ for (l = 0; l < rem1; l++)
+ *ptr16++ = (short)*ptr_fmt++;
+ break;
+ case 4:
+ ptr32 = (int *)data;
+ for (l = 0; l < rem1; l++)
+ *ptr32++ = *ptr_fmt++;
+ break;
+ }
+ dma_sync_sg_for_device(dev, sg, t_num, DMA_FROM_DEVICE);
+ dma->rx_complete = dma->rx_head;
+ sg = dma->sg_rx_p;
+ t_num = rem2/I2S_AFULL_THRESH;
+ dma_sync_sg_for_cpu(dev, sg, t_num, DMA_FROM_DEVICE);
+ ptr_fmt = (int *)dma->rx_complete;
+ switch (rx_unit) {
+ case 1:
+ ptr8 = (char *)(data+rem1*rx_unit);
+ for (l = 0; l < rem2; l++)
+ *ptr8++ = (char)*ptr_fmt++;
+ break;
+ case 2:
+ ptr16 = (short *)(data+rem1*rx_unit);
+ for (l = 0; l < rem2; l++)
+ *ptr16++ = (short)*ptr_fmt++;
+ break;
+ case 4:
+ ptr32 = (int *)(data+rem1*rx_unit);
+ for (l = 0; l < rem2; l++)
+ *ptr32++ = *ptr_fmt++;
+ break;
+ }
+ dma_sync_sg_for_device(dev, sg, t_num, DMA_FROM_DEVICE);
+ dma->rx_complete += rem2 * 4;
+ }
+
+ if (dma->rx_complete >= dma->rx_tail)
+ dma->rx_complete = dma->rx_head;
+
+ dma->rx_avail -= (len/rx_unit) * 4;
+}
+
+static void i2s_dma_rx_complete(void *arg)
+{
+ int ch = (int)arg;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+ struct scatterlist *sg = dma->sg_rx_cur;
+ int num = dma->rx_num;
+ int i;
+
+ async_tx_ack(dma->desc_rx);
+
+ for (i = 0; i < num; i++, sg++) {
+ dma->rx_data_head += sg_dma_len(sg) * 4;
+ dma->rx_avail += sg_dma_len(sg) * 4;
+ }
+
+ if (dma->rx_data_head >= dma->rx_tail)
+ dma->rx_data_head = dma->rx_head;
+
+ ioh_i2s_clear_rx_sts_ir(ch);
+ ioh_i2s_enable_rx_full_ir(ch);
+ kfree(arg);
+}
+
+static void i2s_dma_tx_complete(void *arg)
+{
+ int ch = (int)arg;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+ struct scatterlist *sg = dma->sg_tx_cur;
+ int num = dma->tx_num;
+ int i;
+
+ async_tx_ack(dma->desc_tx);
+
+ for (i = 0; i < num; i++, sg++) {
+ dma->tx_complete += sg_dma_len(sg) * 4;
+ dma->tx_avail -= sg_dma_len(sg) * 4;
+ }
+
+ if (dma->tx_complete >= dma->tx_tail)
+ dma->tx_complete = dma->tx_head;
+ ioh_i2s_clear_tx_sts_ir(ch);
+ ioh_i2s_enable_tx_empty_ir(ch);
+ kfree(arg);
+}
+
+/*****************************************************************************
+ * Interrupt control
+ *****************************************************************************/
+static void i2s_tx_almost_empty_ir(int ch)
+{
+ struct dma_async_tx_descriptor *desc;
+ int num;
+ int tx_comp_index;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+ struct scatterlist *sg = dma->sg_tx_p;
+ void *cb_ch;
+
+ dev_dbg(i2s_data->dev, "%s: data_head=%p data_complete=%p\n", __func__,
+ dma->tx_data_head, dma->tx_complete);
+
+ num = ((int)dma->tx_avail) / (I2S_AEMPTY_THRESH * 4);
+
+ tx_comp_index = (((int)(dma->tx_complete - dma->tx_head))) /\
+ (I2S_AEMPTY_THRESH * 4);
+
+ if ((tx_comp_index + num) >= dma->tx_nent)
+ num = dma->tx_nent - tx_comp_index;
+
+ if (num > I2S_DMA_SG_NUM)
+ num = I2S_DMA_SG_NUM;
+
+ if (!num) {
+ dev_err(i2s_data->dev, "%s:Internal buffer empty\n",
+ __func__);
+ tasklet_schedule(&dma->tx_tasklet);
+ return; /* No data to transmit */
+ }
+
+ sg = sg + tx_comp_index; /* Point head of sg must be sent */
+ dma->sg_tx_cur = sg; /* Save tx condition */
+ dma->tx_num = num; /* Save tx condition */
+
+ desc = dma->chan_tx->device->device_prep_slave_sg(dma->chan_tx,
+ sg, num, DMA_TO_DEVICE,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+
+ if (!desc) {
+ dev_err(i2s_data->dev, "%s:device_prep_slave_sg Failed\n",
+ __func__);
+ return;
+ }
+
+ /* To prevent this function from calling again before DMA completion */
+ ioh_i2s_disable_tx_empty_ir(ch);
+
+ dma->desc_tx = desc;
+
+ cb_ch = kzalloc(sizeof(int), GFP_KERNEL);
+ cb_ch = (void *)ch;
+
+ desc->callback = i2s_dma_tx_complete;
+ desc->callback_param = cb_ch;
+
+ atomic_inc(&dma->pending_tx);
+ desc->tx_submit(desc);
+
+ tasklet_schedule(&dma->tx_tasklet);
+}
+
+void i2s_tx_empty_ir(int ch)
+{
+ dev_warn(i2s_data->dev, "%s:I2S%d under flow occurs\n", __func__, ch);
+}
+
+void i2s_rx_full_ir(int ch)
+{
+ dev_warn(i2s_data->dev, "%s:I2S%d overrun occurs\n", __func__, ch);
+}
+
+static inline void ioh_i2s_interrupt_sub_tx(int ch)
+{
+ unsigned int status;
+ int offset = ch * 0x800;
+
+ status = ioread32(i2s_data->iobase + I2SISTTX_OFFSET + offset);
+ if (status & I2S_TX_EINT)
+ i2s_tx_empty_ir(ch);
+ if (status & I2S_TX_AEINT)
+ i2s_tx_almost_empty_ir(ch);
+
+ /*Clear the interrupt status */
+ iowrite32(status, i2s_data->iobase + I2SISTTX_OFFSET + offset);
+}
+
+static void i2s_rx_almost_full_ir(int ch)
+{
+ struct dma_async_tx_descriptor *desc;
+ struct scatterlist *sg;
+ int rx_data_index;
+ int num;
+ void *cb_ch;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+
+ num = (int)(INTER_BUFF_SIZE - dma->rx_avail) / (I2S_AFULL_THRESH * 4);
+ if (num < 1) {
+ dev_err(i2s_data->dev, "%s:Internal buffer full\n",
+ __func__);
+ tasklet_schedule(&dma->rx_tasklet);
+ return;
+ }
+
+ sg = dma->sg_rx_p;
+ rx_data_index = ((int)(dma->rx_data_head - dma->rx_head)) /\
+ (I2S_AFULL_THRESH * 4);
+
+ if ((rx_data_index + num) >= dma->rx_nent)
+ num = dma->rx_nent - rx_data_index;
+
+ if (num > I2S_DMA_SG_NUM)
+ num = I2S_DMA_SG_NUM;
+
+ sg += rx_data_index;
+
+ desc = dma->chan_rx->device->device_prep_slave_sg(dma->chan_rx,
+ sg, num, DMA_FROM_DEVICE,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!desc) {
+ dev_err(i2s_data->dev, "%s:device_prep_slave_sg Failed\n",
+ __func__);
+ return;
+ }
+
+ dma->sg_rx_cur = sg; /* Save rx condition */
+ ioh_i2s_disable_rx_full_ir(ch);
+ dma->rx_num = num;
+
+ cb_ch = kzalloc(sizeof(int), GFP_KERNEL);
+ cb_ch = (void *)ch;
+
+ dma->desc_rx = desc;
+ desc->callback = i2s_dma_rx_complete;
+ desc->callback_param = cb_ch;
+ desc->tx_submit(desc);
+
+ tasklet_schedule(&dma->rx_tasklet);
+}
+
+static inline void ioh_i2s_interrupt_sub_rx(int ch)
+{
+ unsigned int status;
+ int offset = ch * 0x800;
+
+ status = ioread32(i2s_data->iobase + I2SISTRX_OFFSET + offset);
+ if (status & I2S_RX_FINT)
+ i2s_rx_full_ir(ch);
+ if (status & I2S_RX_AFINT)
+ i2s_rx_almost_full_ir(ch);
+
+ /*Clear the interrupt status */
+ iowrite32(status, i2s_data->iobase + I2SISTRX_OFFSET + offset);
+}
+
+void ioh_i2s_event(u32 idisp, int ch)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&i2s_data->tx_lock, flags);
+
+ if (idisp & BIT(ch + 16)) {
+ dev_dbg(i2s_data->dev, "Rx%d interrupt occures\n", ch);
+ ioh_i2s_interrupt_sub_rx(ch);
+ }
+
+ if (idisp & BIT(ch)) {
+ dev_dbg(i2s_data->dev, "Tx%d interrupt occures\n", ch);
+ ioh_i2s_interrupt_sub_tx(ch);
+ }
+
+ spin_unlock_irqrestore(&i2s_data->tx_lock, flags);
+ return;
+}
+
+static irqreturn_t ioh_i2s_irq(int irq, void *data)
+{
+ int i;
+ u32 idisp;
+
+ idisp = ioread32(i2s_data->iobase + I2SIDISP_OFFSET);
+ for (i = 0; i < MAX_I2S_CH; i++)
+ ioh_i2s_event(idisp, i);
+
+ return IRQ_HANDLED;
+}
+
+/*****************************************************************************
+ * Sound Card
+ *****************************************************************************/
+static void i2s_read_period(struct snd_pcm_substream *substream)
+{
+ struct ml7213i2s_runtime_data *rtd;
+ int period;
+ void *read_ptr;
+ int read_size;
+
+ rtd = substream->runtime->private_data;
+ period = substream->runtime->period_size;
+
+ read_ptr = substream->runtime->dma_area
+ +(snd_pcm_lib_period_bytes(substream) * rtd->irq_pos);
+ read_size = period * (substream->runtime->sample_bits / 8) *
+ (substream->runtime->channels);
+
+ ioh_i2s_read(substream, read_ptr, read_size);
+ rtd->irq_pos = (rtd->irq_pos + 1) % substream->runtime->periods;
+}
+
+static void read_done(void *callback_data, int status, int num, int avail)
+{
+ struct snd_pcm_substream *substream =
+ (struct snd_pcm_substream *)callback_data;
+ struct ml7213i2s_runtime_data *rtd;
+ int ch = substream->number;
+ rtd = substream->runtime->private_data;
+
+ if (num < snd_card_ml7213i2s_capture[ch].period_bytes_max)
+ return;
+
+ switch (status) {
+ case IOH_EOK:
+ if (!rtd->stop) {
+ i2s_read_period(substream);
+ rtd->buf_pos = (rtd->buf_pos + 1) %
+ substream->runtime->periods;
+ snd_pcm_period_elapsed(substream);
+ }
+
+ rtd->cnt++;
+ break;
+ case IOH_EDONE:
+ pr_debug("Done stopping channel %d\n", rtd->stop);
+ rtd->stop = 2;
+ break;
+
+ case IOH_EOVERRUN:
+ if (ignore_overrun)
+ pr_debug("overrun ignore\n");
+ else {
+ pr_err("RX overrun\n");
+ rtd->stop = 2;
+ }
+ break;
+
+ case IOH_EFRAMESYNC:
+ pr_err("Frame sync error\n");
+ rtd->stop = 2;
+ break;
+ }
+ if (rtd->stop)
+ pr_debug("stopping... %d\n", rtd->stop);
+}
+
+static int setup_i2s_read(struct snd_pcm_substream *substream)
+{
+ struct ml7213i2s_runtime_data *rtd;
+ int ret = 0;
+ int ch = substream->number;
+
+ rtd = substream->runtime->private_data;
+
+ if (!ioh_i2s_open(ch, IOH_CAPTURE, "radio-i2s-in")) {
+ pr_err("%s: Cannot open the device\n", __func__);
+ return -1;
+ }
+
+ if (ignore_overrun)
+ ioh_i2s_ignore_rx_overrun();
+
+ ioh_i2s_configure_i2s_regs(ch, IOH_CAPTURE);
+ return ret;
+}
+
+static void i2s_write_period(struct snd_pcm_substream *substream)
+{
+ struct ml7213i2s_runtime_data *rtd;
+ int period;
+ void *write_ptr;
+ int write_size;
+
+ rtd = substream->runtime->private_data;
+ period = substream->runtime->period_size;
+ write_ptr = substream->runtime->dma_area
+ + (snd_pcm_lib_period_bytes(substream) * rtd->irq_pos);
+ write_size = period * (substream->runtime->sample_bits / 8) *
+ (substream->runtime->channels);
+
+ ioh_i2s_write(substream, write_ptr, write_size);
+ rtd->irq_pos = (rtd->irq_pos + 1) % substream->runtime->periods;
+}
+
+static void write_done(void *callback_data, int status, int num, int avail)
+{
+ struct snd_pcm_substream *substream =
+ (struct snd_pcm_substream *)callback_data;
+ struct ml7213i2s_runtime_data *rtd;
+ int ch = substream->number;
+
+ rtd = substream->runtime->private_data;
+
+ if (num < snd_card_ml7213i2s_playback[ch].period_bytes_max)
+ return;
+ if (avail >= snd_card_ml7213i2s_playback[ch].period_bytes_max * 2)
+ return;
+
+ if (!substream) {
+ pr_debug("%s:!substream NULL\n", __func__);
+ return;
+ }
+ if (!substream->runtime) {
+ pr_debug("%s:!substream->runtime NULL\n", __func__);
+ return;
+ }
+ if (!substream->runtime->private_data) {
+ pr_debug("%s:!substream->runtime->private_data NULL\n",
+ __func__);
+ return;
+ }
+ switch (status) {
+ case IOH_EOK:
+ if (!rtd->stop) {
+ i2s_write_period(substream);
+ rtd->buf_pos = (rtd->buf_pos + 1) %
+ substream->runtime->periods;
+ snd_pcm_period_elapsed(rtd->substream);
+ }
+ rtd->cnt++;
+ break;
+ case IOH_EDONE:
+ pr_debug("Done stopping channel %d\n", rtd->stop);
+ rtd->stop = 2;
+ break;
+ default:
+ pr_debug("%s:default(%d)\n", __func__, status);
+ break;
+ }
+}
+
+static int setup_i2s_write(struct snd_pcm_substream *substream)
+{
+ int ret = 0;
+ struct ml7213i2s_runtime_data *rtd;
+ int ch = substream->number;
+
+ rtd = substream->runtime->private_data;
+
+ if (!ioh_i2s_open(ch, IOH_PLAYBACK, "radio-i2s-out")) {
+ pr_err("%s: Cannot open the device\n", __func__);
+ return -1;
+ }
+
+ if (ignore_overrun)
+ ioh_i2s_ignore_rx_overrun();
+
+ ioh_i2s_configure_i2s_regs(ch, IOH_PLAYBACK);
+ return ret;
+}
+
+static void __snd_card_ml7213i2s_runtime_free(struct snd_pcm_runtime *runtime)
+{
+ struct ml7213i2s_runtime_data *rtd;
+ static int cnt;
+
+ rtd = (struct ml7213i2s_runtime_data *)runtime->private_data;
+ if (!rtd->stop)
+ rtd->stop = 1;
+ else {
+ while (rtd->stop != 2) {
+ if (cnt++ > 100) {
+ pr_debug("oops, failed to close ml7213i2s..\n");
+ pr_debug("it's ok if i2s isn't running\n");
+ break;
+ }
+ msleep(20);
+ }
+ }
+}
+
+static void snd_card_ml7213i2s_runtime_capture_free
+ (struct snd_pcm_runtime *runtime)
+{
+ __snd_card_ml7213i2s_runtime_free(runtime);
+ kfree(runtime->private_data);
+}
+
+static struct ml7213i2s_runtime_data *
+ml7213i2s_new_pcm_stream(struct snd_pcm_substream *substream)
+{
+ struct ml7213i2s_runtime_data *rtd;
+
+ rtd = kzalloc(sizeof(*rtd), GFP_KERNEL);
+ if (!rtd)
+ return NULL;
+ spin_lock_init(&rtd->lock);
+ rtd->substream = substream;
+ return rtd;
+}
+
+static int snd_card_ml7213i2s_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ml7213i2s_runtime_data *rtd;
+ int err;
+
+ rtd = ml7213i2s_new_pcm_stream(substream);
+ if (!rtd)
+ return -ENOMEM;
+
+ runtime->private_data = rtd;
+ /* makes the infrastructure responsible for freeing dma */
+ runtime->private_free = snd_card_ml7213i2s_runtime_capture_free;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ rtd->rw = SND_CAPTURE_SUBSTREAM;
+ else
+ rtd->rw = SND_PLAYBACK_SUBSTREAM;
+
+ snd_soc_set_runtime_hwparams(substream,
+ &snd_card_ml7213i2s_capture[substream->number]);
+
+ err = add_capture_constraints(runtime);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int snd_card_ml7213i2s_close(struct snd_pcm_substream *substream)
+{
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ ioh_i2s_release(substream->number, IOH_CAPTURE);
+ else
+ ioh_i2s_release(substream->number, IOH_PLAYBACK);
+ return 0;
+}
+
+static int snd_card_ml7213i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ return snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+}
+
+static int snd_card_ml7213i2s_hw_free(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+void ioh_i2s_irq_stop(int ch, enum ioh_direction dir)
+{
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+
+ if (dir) {
+ ioh_i2s_disable_interrupts(ch, IOH_CAPTURE);
+ ioh_i2s_disable_rx_full_ir(ch);
+ ioh_i2s_clear_rx_sts_ir(ch);
+ dma->rxexe_flag = 0;
+
+ } else {
+ ioh_i2s_disable_interrupts(ch, IOH_PLAYBACK);
+ ioh_i2s_disable_tx_empty_ir(ch);
+ ioh_i2s_clear_tx_sts_ir(ch);
+ dma->txexe_flag = 0;
+ }
+}
+
+void ioh_i2s_write_start(void *callback_data,
+ void (*done) (void *callback_data, int status,
+ int num, int avail))
+{
+ struct snd_pcm_substream *substream = callback_data;
+ int ch = substream->number;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+
+ dma->txexe_flag = 1;
+ dma->tx_data_head = dma->tx_head;
+ dma->tx_complete = dma->tx_head;
+ dma->tx_avail = 0;
+ dma->tx_callback_data = callback_data;
+ dma->tx_done = done;
+
+ ioh_i2s_clear_tx_sts_ir(ch);
+ ioh_i2s_tx_clear_dma_mask(ch);
+ ioh_i2s_enable_interrupts(ch, IOH_PLAYBACK);
+}
+
+void ioh_i2s_read_start(void *callback_data,
+ void (*done) (void *callback_data, int status,
+ int num, int avail))
+{
+ struct snd_pcm_substream *substream = callback_data;
+ int ch = substream->number;
+ struct ioh_i2s_dma *dma = &dmadata[ch];
+
+ dma->rxexe_flag = 1;
+ dma->rx_data_head = dma->rx_head;
+ dma->rx_complete = dma->rx_head;
+ dma->rx_avail = 0;
+ dma->rx_callback_data = callback_data;
+ dma->rx_done = done;
+
+ ioh_i2s_clear_rx_sts_ir(ch);
+ ioh_i2s_rx_clear_dma_mask(ch);
+ ioh_i2s_enable_interrupts(ch, IOH_CAPTURE);
+}
+
+static inline void
+snd_card_ml7213i2s_pcm_i2s_start(struct snd_pcm_substream *substream)
+{
+ struct ml7213i2s_runtime_data *rtd;
+ rtd = substream->runtime->private_data;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ ioh_i2s_read_start(substream, read_done);
+ } else {
+ ioh_i2s_write_start(substream, write_done);
+ i2s_write_period(substream);
+ }
+}
+
+static int snd_card_ml7213i2s_pcm_trigger
+ (struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ml7213i2s_runtime_data *rtd = runtime->private_data;
+ int err = 0;
+
+ spin_lock(&rtd->lock);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ rtd->stop = 0;
+ snd_card_ml7213i2s_pcm_i2s_start(substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ pr_debug("stop..\n");
+ if (!rtd->stop)
+ rtd->stop = 1;
+ else
+ pr_debug("already stopped %d\n", rtd->stop);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ ioh_i2s_irq_stop(substream->number, IOH_CAPTURE);
+ else
+ ioh_i2s_irq_stop(substream->number, IOH_PLAYBACK);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ spin_unlock(&rtd->lock);
+ return 0;
+}
+
+static int snd_card_ml7213i2s_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ml7213i2s_runtime_data *rtd = runtime->private_data;
+
+ rtd->irq_pos = 0;
+ rtd->buf_pos = 0;
+
+ snd_pcm_format_set_silence(runtime->format, runtime->dma_area,
+ bytes_to_samples(runtime, runtime->dma_bytes));
+
+ return 0;
+}
+
+static snd_pcm_uframes_t
+snd_card_ml7213i2s_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ml7213i2s_runtime_data *rtd = runtime->private_data;
+
+ return substream->runtime->period_size*rtd->buf_pos;
+}
+
+static struct snd_pcm_ops snd_card_ml7213i2s_capture_ops = {
+ .open = snd_card_ml7213i2s_open,
+ .close = snd_card_ml7213i2s_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_card_ml7213i2s_hw_params,
+ .hw_free = snd_card_ml7213i2s_hw_free,
+ .prepare = snd_card_ml7213i2s_pcm_prepare,
+ .trigger = snd_card_ml7213i2s_pcm_trigger,
+ .pointer = snd_card_ml7213i2s_pcm_pointer,
+};
+
+static int ml7213ioh_pcm_new(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_pcm *pcm = rtd->pcm;
+
+ snd_pcm_lib_preallocate_pages_for_all(
+ pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+ snd_dma_continuous_data(GFP_KERNEL),
+ 0, 64 * 1024);
+
+ return 0;
+}
+
+static struct snd_soc_platform_driver ml7213ioh_soc_platform = {
+ .pcm_new = ml7213ioh_pcm_new,
+ .ops = &snd_card_ml7213i2s_capture_ops,
+};
+
+/*****************************************************************************
+ * DAI functions
+ *****************************************************************************/
+static int ml7213i2s_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ml7213i2s_runtime_data *rtd = runtime->private_data;
+ int ch = substream->number;
+ int byte;
+
+ switch (params_format(hw_params)) {
+ case SNDRV_PCM_FORMAT_U8:
+ byte = 8;
+ case SNDRV_PCM_FORMAT_S16_LE:
+ byte = 16;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ byte = 24;
+ break;
+ default:
+ pr_err("%s: Failed not support format\n", __func__);
+ return -1;
+ break;
+ }
+
+ switch (rtd->rw) {
+ case SND_CAPTURE_SUBSTREAM:
+ dmadata[ch].dma_rx_unit = byte;
+ if (setup_i2s_read(substream))
+ return -1;
+ break;
+ case SND_PLAYBACK_SUBSTREAM:
+ dmadata[ch].dma_rx_unit = byte;
+ if (setup_i2s_write(substream))
+ return -1;
+ break;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static int ml7213i2s_dai_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct ml7213i2s_runtime_data *rtd = substream->runtime->private_data;
+ unsigned int ch = substream->number;
+
+ switch (rtd->rw) {
+ case SND_CAPTURE_SUBSTREAM:
+ ioh_i2s_stop_i2s_regs(ch, IOH_CAPTURE);
+ break;
+
+ case SND_PLAYBACK_SUBSTREAM:
+ ioh_i2s_stop_i2s_regs(ch, IOH_PLAYBACK);
+ break;
+
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static int ml7213i2s_dai_set_dai_fmt(struct snd_soc_dai *dai,
+ unsigned int fmt)
+{
+ struct ml7213i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
+ u32 cmn_reg[MAX_I2S_CH];
+ u32 tx_reg[MAX_I2S_CH];
+ u32 rx_reg[MAX_I2S_CH];
+ int i;
+ int offset = 0;
+ void *iobase = i2s->iobase;
+
+ /* set master/slave audio interface */
+ for (i = 0; i < MAX_I2S_CH; i++, offset = i * 0x800) {
+ cmn_reg[i] = ioread32(iobase + I2SCLKCNT0_OFFSET + 0x10 * i);
+ tx_reg[i] = ioread32(iobase + offset + I2SCNTTX_OFFSET);
+ rx_reg[i] = ioread32(iobase + offset + I2SCNTRX_OFFSET);
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ cmn_reg[i] |= I2SCLKCNT_MSSEL;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ cmn_reg[i] &= ~I2SCLKCNT_MSSEL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ cmn_reg[i] &= ~ML7213I2S_LRCLK_FMT;
+ tx_reg[i] &= ~ML7213I2S_TX_I2S | ~ML7213I2S_TX_DLY |\
+ ~ML7213I2S_TX_MSB_LSB |\
+ ~ML7213I2S_TX_LR_POL | ~ML7213I2S_TX_AFT;
+ rx_reg[i] &= ~ML7213I2S_RX_I2S | ~ML7213I2S_RX_DLY |\
+ ~ML7213I2S_RX_MSB_LSB |\
+ ~ML7213I2S_RX_LR_POL | ~ML7213I2S_RX_AFT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ cmn_reg[i] &= ~ML7213I2S_BCLKPOL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ iowrite32(cmn_reg[i], iobase + I2SCLKCNT0_OFFSET + 0x10 * i);
+ iowrite32(tx_reg[i], iobase + offset + I2SCNTTX_OFFSET);
+ iowrite32(rx_reg[i], iobase + offset + I2SCNTRX_OFFSET);
+ }
+
+ return 0;
+}
+
+static int ml7213i2s_dai_set_dai_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ u32 reg[MAX_I2S_CH];
+ struct ml7213i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
+ void *iobase = i2s->iobase;
+ int i;
+
+ if (i2s->freq != freq)
+ i2s->freq = freq;
+
+ for (i = 0; i < MAX_I2S_CH; i++) {
+ reg[i] = ioread32(iobase + I2SCLKCNT0_OFFSET + 0x10 * i);
+ if (clk_id == IOH_MASTERCLKSEL_MCLK)
+ reg[i] &= ~ML7213I2S_MASTER_CLK_SEL;
+ else if (clk_id == IOH_MASTERCLKSEL_MLBCLK)
+ reg[i] |= ML7213I2S_MASTER_CLK_SEL;
+ iowrite32(reg[i], iobase + I2SCLKCNT0_OFFSET + 0x10 * i);
+ }
+
+ return 0;
+}
+
+static int ml7213i2s_dai_set_clkdiv(struct snd_soc_dai *dai,
+ int div_id, int div)
+{
+ struct ml7213i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
+ u32 bclkfs = 0;
+ u32 mclkfs = 0;
+ int ch;
+ void *iobase = i2s->iobase;
+ u32 i2sclkcnt;
+
+ switch (div_id) {
+ case ML7213IOH_BCLKFS0:
+ case ML7213IOH_MCLKFS0:
+ ch = 0;
+ break;
+ case ML7213IOH_BCLKFS1:
+ case ML7213IOH_MCLKFS1:
+ ch = 1;
+ break;
+ case ML7213IOH_BCLKFS2:
+ case ML7213IOH_MCLKFS2:
+ ch = 2;
+ break;
+ case ML7213IOH_BCLKFS3:
+ case ML7213IOH_MCLKFS3:
+ ch = 3;
+ break;
+ case ML7213IOH_BCLKFS4:
+ case ML7213IOH_MCLKFS4:
+ ch = 4;
+ break;
+ case ML7213IOH_BCLKFS5:
+ case ML7213IOH_MCLKFS5:
+ ch = 5;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (div_id) {
+ case ML7213IOH_BCLKFS0:
+ case ML7213IOH_BCLKFS1:
+ case ML7213IOH_BCLKFS2:
+ case ML7213IOH_BCLKFS3:
+ case ML7213IOH_BCLKFS4:
+ case ML7213IOH_BCLKFS5:
+ if (div == 8)
+ bclkfs = IOH_BCLKFS_8FS;
+ else if (div == 16)
+ bclkfs = IOH_BCLKFS_16FS;
+ else if (div == 32)
+ bclkfs = IOH_BCLKFS_32FS;
+ else if (div == 64)
+ bclkfs = IOH_BCLKFS_64FS;
+ break;
+ case ML7213IOH_MCLKFS0:
+ case ML7213IOH_MCLKFS1:
+ case ML7213IOH_MCLKFS2:
+ case ML7213IOH_MCLKFS3:
+ case ML7213IOH_MCLKFS4:
+ case ML7213IOH_MCLKFS5:
+ if (div == 64)
+ mclkfs = IOH_MCLKFS_64FS;
+ else if (div == 128)
+ mclkfs = IOH_MCLKFS_128FS;
+ else if (div == 192)
+ mclkfs = IOH_MCLKFS_192FS;
+ else if (div == 256)
+ mclkfs = IOH_MCLKFS_256FS;
+ else if (div == 384)
+ mclkfs = IOH_MCLKFS_384FS;
+ else if (div == 512)
+ mclkfs = IOH_MCLKFS_512FS;
+ else if (div == 768)
+ mclkfs = IOH_MCLKFS_768FS;
+ else if (div == 1024)
+ mclkfs = IOH_MCLKFS_1024FS;
+ break;
+ default:
+ return -EINVAL;
+ }
+ i2sclkcnt = ioread32(i2s_data->iobase + I2SCLKCNT0_OFFSET + 0x10 * ch);
+ i2sclkcnt |= bclkfs << I2SCLKCNT_BCLKFS_OFFSET;
+ i2sclkcnt |= mclkfs << I2SCLKCNT_MCLKFS_OFFSET;
+ iowrite32(i2sclkcnt, iobase + I2SCLKCNT0_OFFSET + 0x10 * ch);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops ml7213i2s_dai_ops = {
+ .hw_params = ml7213i2s_dai_hw_params,
+ .hw_free = ml7213i2s_dai_hw_free,
+ .set_fmt = ml7213i2s_dai_set_dai_fmt,
+ .set_sysclk = ml7213i2s_dai_set_dai_sysclk,
+ .set_clkdiv = ml7213i2s_dai_set_clkdiv,
+};
+
+static struct snd_soc_dai_driver ml7213i2s_dai_data = {
+ .playback = {
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .rates = ML7213_I2S_RATES,
+ .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |\
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .capture = {
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .rates = ML7213_I2S_RATES,
+ .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |\
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &ml7213i2s_dai_ops,
+};
+
+/*****************************************************************************
+ * PCI functions
+ *****************************************************************************/
+DEFINE_PCI_DEVICE_TABLE(ioh_pci_tbl) = {
+ {
+ .vendor = PCI_VENDOR_ID_ROHM,
+ .device = PCI_DEVICE_ID_ML7213_I2S,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ {0,}
+};
+
+static int ioh_i2s_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ int rv = 0;
+ void __iomem *tbl;
+ unsigned int mapbase;
+ struct ml7213i2s_dai *i2s_dai;
+
+ rv = pci_enable_device(pdev);
+ if (rv)
+ goto enable_device;
+
+ tbl = pci_iomap(pdev, 1, 0);
+ if (!tbl) {
+ rv = -ENOMEM;
+ printk(KERN_ERR "pci_iomap failed\n");
+ goto out_ipmap;
+ }
+
+ mapbase = pci_resource_start(pdev, 1);
+ if (!mapbase) {
+ rv = -ENOMEM;
+ printk(KERN_ERR "pci_resource_start failed\n");
+ goto out_pci_resource;
+ }
+
+ i2s_data = devm_kzalloc(&pdev->dev, sizeof(*i2s_data), GFP_KERNEL);
+ if (!i2s_data) {
+ dev_err(&pdev->dev, "Can't allocate i2s_data\n");
+ rv = -ENOMEM;
+ goto out_kzalloc_data;
+ }
+
+ i2s_data->dev = &pdev->dev;
+ i2s_data->iobase = tbl;
+ i2s_data->mapbase = mapbase;
+ spin_lock_init(&i2s_data->tx_lock);
+
+ rv = request_irq(pdev->irq, ioh_i2s_irq, IRQF_SHARED, "ml7213_ioh",
+ pdev);
+ if (rv != 0) {
+ printk(KERN_ERR "Failed to allocate irq\n");
+ goto out_irq;
+ }
+
+ i2s_dai = devm_kzalloc(&pdev->dev, sizeof(*i2s_dai), GFP_KERNEL);
+ if (!i2s_dai) {
+ dev_err(&pdev->dev, "Can't allocate i2s_dai\n");
+ rv = -ENOMEM;
+ goto out_kzalloc_i2s_dai;
+ }
+ dev_set_drvdata(&pdev->dev, i2s_dai);
+
+ rv = snd_soc_register_platform(&pdev->dev, &ml7213ioh_soc_platform);
+ if (rv < 0) {
+ printk(KERN_ERR "Failed to snd_soc_register_platform\n");
+ goto out_register_plat;
+ }
+
+ i2s_dai->iobase = tbl;
+ i2s_dai->dev = &pdev->dev;
+ rv = snd_soc_register_dai(&pdev->dev, &ml7213i2s_dai_data);
+ if (rv < 0) {
+ printk(KERN_ERR "Failed to snd_soc_register_dai\n");
+ goto out_register_dai;
+ }
+
+ return 0;
+
+out_register_dai:
+ snd_soc_unregister_platform(&pdev->dev);
+out_register_plat:
+out_kzalloc_i2s_dai:
+ free_irq(pdev->irq, pdev);
+out_irq:
+out_kzalloc_data:
+out_pci_resource:
+ pci_iounmap(pdev, i2s_data->iobase);
+out_ipmap:
+ pci_disable_device(pdev);
+enable_device:
+
+ return rv;
+}
+
+static void ioh_i2s_pci_remove(struct pci_dev *pdev)
+{
+ int i;
+
+ for (i = 0; i < MAX_I2S_CH; i++)
+ ioh_i2s_reset(i);
+
+ snd_soc_unregister_platform(&pdev->dev);
+ free_irq(pdev->irq, pdev);
+ pci_iounmap(pdev, i2s_data->iobase);
+ pci_disable_device(pdev);
+}
+
+static void ioh_i2s_save_reg_conf(struct pci_dev *pdev)
+{
+ int i;
+ void *iobase;
+ struct ioh_i2s_pm_ch_reg *save;
+ struct ioh_i2s_pm_ch_reg_cmn *save_cmn;
+ int offset;
+
+ iobase = i2s_data->iobase;
+ for (i = 0, offset = 0; i < MAX_I2S_CH; i++, offset = i * 0x800) {
+ save = &i2s_data->ch_reg_save[i];
+
+ save->i2sdrtx = ioread32(iobase + offset + I2SDRTX_OFFSET);
+ save->i2scnttx = ioread32(iobase + offset + I2SCNTTX_OFFSET);
+ save->i2sfifoctx =
+ ioread32(iobase + offset + I2SFIFOCTX_OFFSET);
+ save->i2saftx = ioread32(iobase + offset + I2SAFTX_OFFSET);
+ save->i2saetx = ioread32(iobase + offset + I2SAETX_OFFSET);
+ save->i2smsktx = ioread32(iobase + offset + I2SMSKTX_OFFSET);
+ save->i2sisttx = ioread32(iobase + offset + I2SISTTX_OFFSET);
+
+ save->i2scntrx = ioread32(iobase + offset + I2SCNTRX_OFFSET);
+ save->i2sfifocrx =
+ ioread32(iobase + offset + I2SFIFOCRX_OFFSET);
+ save->i2safrx = ioread32(iobase + offset + I2SAFRX_OFFSET);
+ save->i2saerx = ioread32(iobase + offset + I2SAERX_OFFSET);
+ save->i2smskrx = ioread32(iobase + offset + I2SMSKRX_OFFSET);
+ save->i2sistrx = ioread32(iobase + offset + I2SISTRX_OFFSET);
+ }
+
+ save_cmn = &i2s_data->cmn_reg_save;
+ for (i = 0; i < MAX_I2S_CH; i++) {
+ save_cmn->i2sclkcnt[i] =
+ ioread32(i2s_data->iobase + I2SCLKCNT0_OFFSET + 0x10 * i);
+ }
+ save_cmn->i2simask = ioread32(i2s_data->iobase + I2SIMASK_OFFSET);
+}
+
+static int ioh_i2s_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ int ret;
+
+ ioh_i2s_save_reg_conf(pdev);
+ ret = pci_save_state(pdev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ " %s -pci_save_state returns %d\n", __func__, ret);
+ return ret;
+ }
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+static void ioh_i2s_restore_reg_conf(struct pci_dev *pdev)
+{
+ int i;
+ void *iobase;
+ struct ioh_i2s_pm_ch_reg *save;
+ int offset;
+
+ iobase = i2s_data->iobase;
+ save = &i2s_data->ch_reg_save[0];
+ for (i = 0, offset = 0; i < MAX_I2S_CH; i++, offset = i * 0x800) {
+ iowrite32(save->i2sdrtx, iobase + offset + I2SDRTX_OFFSET);
+ iowrite32(save->i2scnttx, iobase + offset + I2SCNTTX_OFFSET);
+ iowrite32(save->i2sfifoctx,
+ iobase + offset + I2SFIFOCTX_OFFSET);
+ iowrite32(save->i2saftx, iobase + offset + I2SAFTX_OFFSET);
+ iowrite32(save->i2saetx, iobase + offset + I2SAETX_OFFSET);
+ iowrite32(save->i2smsktx, iobase + offset + I2SMSKTX_OFFSET);
+ iowrite32(save->i2sisttx, iobase + offset + I2SISTTX_OFFSET);
+
+ iowrite32(save->i2scntrx, iobase + offset + I2SCNTRX_OFFSET);
+ iowrite32(save->i2sfifocrx,
+ iobase + offset + I2SFIFOCRX_OFFSET);
+ iowrite32(save->i2safrx, iobase + offset + I2SAFRX_OFFSET);
+ iowrite32(save->i2saerx, iobase + offset + I2SAERX_OFFSET);
+ iowrite32(save->i2smskrx, iobase + offset + I2SMSKRX_OFFSET);
+ iowrite32(save->i2sistrx, iobase + offset + I2SISTRX_OFFSET);
+ }
+
+ for (i = 0; i < MAX_I2S_CH; i++) {
+ iowrite32(i2s_data->cmn_reg_save.i2sclkcnt[i],
+ i2s_data->iobase + I2SCLKCNT0_OFFSET + 0x10 * i);
+ }
+
+ iowrite32(i2s_data->cmn_reg_save.i2simask,
+ i2s_data->iobase + I2SIMASK_OFFSET);
+}
+
+static int ioh_i2s_pci_resume(struct pci_dev *pdev)
+{
+ int ret;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "%s-pci_enable_device failed(ret=%d) ", __func__, ret);
+ return ret;
+ }
+
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+ ioh_i2s_restore_reg_conf(pdev);
+
+ return 0;
+}
+
+static struct pci_driver ioh_i2s_driver = {
+ .name = DRV_NAME,
+ .probe = ioh_i2s_pci_probe,
+ .remove = __devexit_p(ioh_i2s_pci_remove),
+ .id_table = ioh_pci_tbl,
+#ifdef CONFIG_PM
+ .suspend = ioh_i2s_pci_suspend,
+ .resume = ioh_i2s_pci_resume,
+#endif
+};
+
+static int __init ioh_i2s_init(void)
+{
+ return pci_register_driver(&ioh_i2s_driver);
+}
+
+static void __exit ioh_i2s_cleanup(void)
+{
+ pci_unregister_driver(&ioh_i2s_driver);
+}
+
+module_init(ioh_i2s_init);
+module_exit(ioh_i2s_cleanup);
+
+MODULE_AUTHOR("Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>");
+MODULE_DESCRIPTION("LAPIS Semiconductor ML7213 IOH ALSA SoC platform driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/lapis/ml7213ioh-plat.h b/sound/soc/lapis/ml7213ioh-plat.h
new file mode 100644
index 0000000..614f762
--- /dev/null
+++ b/sound/soc/lapis/ml7213ioh-plat.h
@@ -0,0 +1,583 @@
+/*
+ * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef ML7213IOH_PLAT_H
+#define ML7213IOH_PLAT_H
+
+#include <linux/interrupt.h>
+#include <linux/pch_dma.h>
+
+#ifndef add_capture_constraints
+#define add_capture_constraints(x) 0
+#endif
+
+#define SND_CAPTURE_SUBSTREAM 0
+#define SND_PLAYBACK_SUBSTREAM 1
+
+#define I2SCLKCNT_MSSEL BIT(0)
+#define I2SCLKCNT_BCLKPOL BIT(1)
+
+#define DRV_NAME "ml7213_ioh_i2s"
+#define PCI_VENDOR_ID_ROHM 0X10DB
+#define PCI_DEVICE_ID_ML7213_I2S 0X8033
+
+#define ML7213I2S_BCLKPOL BIT(1)
+#define ML7213I2S_LRCLK_FMT (BIT(4) | BIT(5))
+#define ML7213I2S_TX_I2S BIT(0)
+#define ML7213I2S_TX_DLY BIT(12)
+#define ML7213I2S_TX_MSB_LSB BIT(13)
+#define ML7213I2S_TX_LR_POL BIT(14)
+#define ML7213I2S_TX_AFT BIT(15)
+#define ML7213I2S_RX_I2S BIT(0)
+#define ML7213I2S_RX_DLY BIT(12)
+#define ML7213I2S_RX_MSB_LSB BIT(13)
+#define ML7213I2S_RX_LR_POL BIT(14)
+#define ML7213I2S_RX_AFT BIT(15)
+#define ML7213I2S_MASTER_CLK_SEL BIT(2)
+
+#define ML7213_I2S_RATES \
+ (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000)
+
+/* ioh_bclkfs_t */
+#define IOH_BCLKFS_8FS 0
+#define IOH_BCLKFS_16FS 1
+#define IOH_BCLKFS_32FS 2
+#define IOH_BCLKFS_64FS 3
+
+#define I2SCLKCNT_MCLKFS_OFFSET (8)
+#define I2SCLKCNT_BCLKFS_OFFSET (12)
+
+#define I2SCLKCNT0_OFFSET 0x3000
+#define I2SCLKCNT1_OFFSET 0x3010
+#define I2SCLKCNT2_OFFSET 0x3020
+#define I2SCLKCNT3_OFFSET 0x3030
+#define I2SCLKCNT4_OFFSET 0x3040
+#define I2SCLKCNT5_OFFSET 0x3050
+#define I2SISTATUS_OFFSET 0x3080
+#define I2SIDISP_OFFSET 0x3084
+#define I2SIMASK_OFFSET 0x3088
+#define I2SIMASKCLR_OFFSET 0x308C
+#define I2SSRST_OFFSET 0x3FFC
+#define I2SDRTX_OFFSET 0x0
+#define I2SCNTTX_OFFSET 0x4
+#define I2SFIFOCTX_OFFSET 0x8
+#define I2SAFTX_OFFSET 0xC
+#define I2SAETX_OFFSET 0x10
+#define I2SMSKTX_OFFSET 0x14
+#define I2SISTTX_OFFSET 0x18
+#define I2SMONTX_OFFSET 0x1C
+#define I2SDRRX_OFFSET 0x20
+#define I2SCNTRX_OFFSET 0x24
+#define I2SFIFOCRX_OFFSET 0x28
+#define I2SAFRX_OFFSET 0x2C
+#define I2SAERX_OFFSET 0x30
+#define I2SMSKRX_OFFSET 0x34
+#define I2SISTRX_OFFSET 0x38
+#define I2SMONRX_OFFSET 0x3C
+#define FIRST_TX_OFFSET 0x0
+#define FIRST_RX_OFFSET 0x0
+
+#define I2SDRTXMIRROR_OFFSET 0x100
+#define I2SDRRXMIRROR_OFFSET 0x400
+
+#define I2S_ALL_INTERRUPT_BITS 0x3F003F
+#define I2S_IDISP_BITS 0x3F003F
+#define I2S_IDISP_TX_BITS 0x00003F
+#define I2S_IDISP_RX_BITS 0x3F0000
+#define TX_BIT_FIMSK 0x1 /*Fifo full interrupt mask bit*/
+#define TX_BIT_AFIMSK 0x2 /*Fifo Almost full interrupt mask bit*/
+#define TX_BIT_EIMSK 0x4 /*Fifo empty interrupt mask bit*/
+#define TX_BIT_AEIMSK 0x8 /*Fifo Almost empty interrupt mask bit*/
+#define TX_BIT_DMAMSK 0x10 /*Masks DMA*/
+#define TX_BIT_DMATC 0x100
+#define I2S_TX_ALL_INTR_MASK_BITS (TX_BIT_FIMSK | TX_BIT_AFIMSK | TX_BIT_EIMSK \
+ | TX_BIT_AEIMSK)
+#define I2S_TX_NORMAL_INTR_MASK_BITS (TX_BIT_FIMSK | TX_BIT_AFIMSK)
+#define RX_BIT_FIMSK 0x1 /*Fifo full interrupt mask bit*/
+#define RX_BIT_AFIMSK 0x2 /*Fifo Almost full interrupt mask bit*/
+#define RX_BIT_EIMSK 0x4 /*Fifo empty interrupt mask bit*/
+#define RX_BIT_AEIMSK 0x8 /*Fifo Almost empty interrupt mask bit*/
+#define RX_BIT_DMAMSK 0x10 /*Masks DMA*/
+#define RX_BIT_DMATC 0x100
+#define I2S_RX_ALL_INTR_MASK_BITS (RX_BIT_FIMSK | RX_BIT_AFIMSK | RX_BIT_EIMSK \
+ | RX_BIT_AEIMSK)
+#define I2S_RX_NORMAL_INTR_MASK_BITS (RX_BIT_EIMSK | RX_BIT_AEIMSK)
+#define I2S_TX_FINT 0x1 /*Full Interrupt*/
+#define I2S_TX_AFINT 0x2 /*Almost full interrupt*/
+#define I2S_TX_EINT 0x4 /*Empty interrupt*/
+#define I2S_TX_AEINT 0x8 /*Almost empty interrupt*/
+#define I2S_RX_FINT 0x1 /*Full Interrupt*/
+#define I2S_RX_AFINT 0x2 /*Almost full interrupt*/
+#define I2S_RX_EINT 0x4 /*Empty interrupt*/
+#define I2S_RX_AEINT 0x8 /*Almost empty interrupt*/
+
+#define I2S_FIFO_TX_FCLR BIT(0)
+#define I2S_FIFO_TX_RUN BIT(4)
+#define I2S_FIFO_RX_FCLR BIT(0)
+#define I2S_FIFO_RX_RUN BIT(4)
+
+#define FIFO_CTRL_BIT_TX_RUN 0x10
+#define FIFO_CTRL_BIT_RX_RUN 0x10
+#define I2S_CNT_BIT_TEL 0x1
+#define I2S_IMASK_TX_BIT_START 0
+#define I2S_IMASK_RX_BIT_START 16
+
+
+/* DMA processing */
+#define PERIOD_POS_MAX I2S_DMA_SG_NUM
+#define PERIOD_LEN_TX (I2S_AEMPTY_THRESH * PERIOD_POS_MAX)
+#define PERIOD_LEN_RX (I2S_AFULL_THRESH * PERIOD_POS_MAX)
+
+#define SUPPORT_FORMAT (SNDRV_PCM_FMTBIT_U8 | \
+ SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+#define MAX_PERIOD_SIZE_TX (PERIOD_LEN_TX * 4)
+#define MAX_PERIOD_SIZE_RX (PERIOD_LEN_RX * 4)
+
+#define USE_CHANNELS_MIN 1
+#define USE_CHANNELS_MAX 2
+#define MAX_I2S_CH 6 /*I2S0 ~ I2S5*/
+#define USE_PERIODS_MIN (I2S_DMA_SG_MAX)
+#define USE_PERIODS_MAX (I2S_DMA_SG_MAX)
+
+#define I2S_AEMPTY_THRESH 64 /* Almost Empty Threshold */
+#define I2S_AFULL_THRESH 64 /* Almost Full Threshold */
+
+#define INTER_BUFF_SIZE (I2S_AEMPTY_THRESH * 4 \
+ * I2S_DMA_SG_NUM \
+ * I2S_DMA_SG_MAX)
+#define I2S_DMA_SG_NUM (128)
+#define I2S_DMA_SG_MAX (64)
+
+#define IOH_MSSEL_MASTER 1
+
+enum ioh_direction {
+ IOH_PLAYBACK = 0,
+ IOH_CAPTURE,
+};
+
+enum ioh_i2s_fifo_type {
+ IOH_FIFO_32 = 4,
+ IOH_FIFO_16 = 2,
+ IOH_FIFO_8 = 1,
+};
+
+enum ioh_i2s_status {
+ IOH_EOK = 0,
+ IOH_EDONE = 1,
+ IOH_EUNDERRUN = 2,
+ IOH_EOVERRUN = 3,
+ IOH_EFRAMESYNC = 4,
+};
+
+struct ml7213i2s_runtime_data {
+ spinlock_t lock;
+ unsigned int irq_pos;
+ unsigned int buf_pos;
+ struct snd_pcm_substream *substream;
+ int stop;
+ int cnt;
+ unsigned int rw;
+};
+
+enum ioh_bclkpol_t {
+ ioh_BCLKPOL_FALLING = 0,
+ ioh_BCLKPOL_RISING,
+};
+
+enum ioh_masterclksel_t {
+ IOH_MASTERCLKSEL_MCLK = 0,
+ IOH_MASTERCLKSEL_MLBCLK,
+};
+
+enum ioh_lrckfmt_t {
+ IOH_LRCLKFMT_I2S = 1,
+ IOH_LRCLKFMT_LONGFRAME,
+ IOH_LRCLKFMT_SHORTFRAME,
+};
+
+enum ioh_mclkfs_t {
+ IOH_MCLKFS_64FS = 0,
+ IOH_MCLKFS_128FS,
+ IOH_MCLKFS_192FS,
+ IOH_MCLKFS_256FS,
+ IOH_MCLKFS_384FS,
+ IOH_MCLKFS_512FS,
+ IOH_MCLKFS_768FS,
+ IOH_MCLKFS_1024FS,
+};
+
+enum ioh_dlyoff_t {
+ IOH_DLYOFF_DLY_ON = 0, /* date delat on */
+ IOH_DLYOFF_DLY_OFF, /* date delat off */
+};
+
+
+
+enum ioh_lrpol_t {
+ IOH_LRPOL_NO_INVERT = 0, /* Low of LRCLK is L data.
+ High of LRCLK is R data. */
+ IOH_LRPOL_INVERT, /* Low of LRCLK is R data.
+ High of LRCLK is L data. */
+};
+
+enum ioh_aft_t {
+ IOH_AFR_FRONT = 0,
+ IOH_AFR_BACK,
+};
+
+struct ioh_i2s_pm_ch_reg {
+ u32 i2sdrtx; /* Tx: data register */
+ u32 i2scnttx; /* Tx: control register */
+ u32 i2sfifoctx; /* Tx: FIFO control register */
+ u32 i2saftx; /* Tx: almost full threshold setting */
+ u32 i2saetx; /* Tx: almost empty threshold setting */
+ u32 i2smsktx; /* Tx: interrupt mask settings */
+ u32 i2sisttx; /* Tx: for acknowledging interrupts */
+ u32 i2scntrx; /* Rx: control register */
+ u32 i2sfifocrx; /* Rx: FIFO control register */
+ u32 i2safrx; /* Rx: almost full threshold setting */
+ u32 i2saerx; /* Rx: almost empty threshold setting */
+ u32 i2smskrx; /* Rx: interrupt mask settings */
+ u32 i2sistrx; /* Rx: for acknowledging interrupts */
+};
+
+struct ioh_i2s_pm_ch_reg_cmn {
+ u32 i2sclkcnt[MAX_I2S_CH]; /*clock control register(ch0~5) */
+ u32 i2simask; /*interrupt mask */
+};
+
+struct ioh_i2s_data {
+ struct device *dev;
+ void *iobase;
+ unsigned int mapbase;
+ int ch;
+ int ignore_rx_overrun;
+ spinlock_t tx_lock;
+ struct ioh_i2s_pm_ch_reg_cmn cmn_reg_save;
+ struct ioh_i2s_pm_ch_reg ch_reg_save[MAX_I2S_CH];
+};
+
+struct ioh_i2s_dma {
+ atomic_t rx_busy;
+ atomic_t tx_busy;
+
+ /* Transmit side DMA */
+ atomic_t pending_tx;
+
+ struct ioh_dma_config *dma_config;
+
+ struct scatterlist *sg_tx_p;
+ struct scatterlist *sg_rx_p;
+
+ struct scatterlist *sg_tx_cur; /* current head of tx sg */
+ struct scatterlist *sg_rx_cur; /* current head of tx sg */
+
+ int tx_num; /* The number of sent sg */
+ int rx_num; /* The number of sent sg */
+
+ void *rxbuf_virt;
+ void *txbuf_virt;
+ unsigned char *tx_tail;
+ unsigned char *tx_head;
+ unsigned char *tx_data_head;
+ unsigned char *tx_complete;
+ unsigned int tx_avail;
+ unsigned char *rx_tail;
+ unsigned char *rx_head;
+ unsigned char *rx_data_head;
+ unsigned char *rx_complete;
+ unsigned int rx_avail;
+
+ struct dma_chan *chan_tx;
+ struct dma_chan *chan_rx;
+
+ int rx_nent; /* The number of rx scatter list */
+ int tx_nent; /* The number of tx scatter list */
+
+ struct dma_async_tx_descriptor *desc_tx;
+ struct dma_async_tx_descriptor *desc_rx;
+
+ dma_addr_t tx_buf_dma;
+ dma_addr_t rx_buf_dma;
+
+ struct pch_dma_slave param_tx;
+ struct pch_dma_slave param_rx;
+
+ void *rx_callback_data;
+ void (*rx_done) (void *callback_data, int status, int num, int avail);
+ void *tx_callback_data;
+ void (*tx_done) (void *callback_data, int status, int num, int avail);
+
+ int dma_tx_unit; /* 1Byte of 2Byte or 4Byte */
+ int dma_rx_unit; /* 1Byte of 2Byte or 4Byte */
+ int dma_tx_width;
+ int dma_rx_width;
+
+ int txexe_flag;
+ int rxexe_flag;
+
+ struct tasklet_struct tx_tasklet;
+ struct tasklet_struct rx_tasklet;
+};
+
+struct ml7213i2s_dai {
+ struct snd_soc_dai_driver dai;
+ struct device *dev;
+ void *iobase;
+ u32 freq;
+};
+
+struct ioh_i2s_config_common_reg {
+ u32 i2sclkcnt; /*clock control register(ch0~5) */
+ u32 i2sistatus; /*interrupt status */
+ u32 i2sidisp; /*active interrupts */
+ u32 i2simask; /*interrupt mask */
+ u32 i2simaskclr; /*interrupt mask clear */
+};
+
+struct ioh_i2s_config_tx_reg {
+ u32 i2sdrtx; /*data register */
+ u32 i2scnttx; /*control register */
+ u32 i2sfifoctx; /*FIFO control register */
+ u32 i2saftx; /*almost full threshold setting */
+ u32 i2saetx; /*almost empty threshold setting */
+ u32 i2smsktx; /*interrupt mask settings */
+ u32 i2sisttx; /*for acknowledging interrupts */
+ u32 i2smontx; /*monitor register */
+};
+
+struct ioh_i2s_config_rx_reg {
+ u32 i2sdrrx; /* data register */
+ u32 i2scntrx; /* control register */
+ u32 i2sfifocrx;/* FIFO control register */
+ u32 i2safrx; /* almost full threshold setting */
+ u32 i2saerx; /* almost empty threshold setting */
+ u32 i2smskrx; /* interrupt mask settings */
+ u32 i2sistrx; /* for acknowledging interrupts */
+ u32 i2smonrx; /* monitor register */
+};
+
+struct ioh_i2s_config_reg {
+ /* The common register settings */
+ struct ioh_i2s_config_common_reg cmn;
+
+ /* TX channel settings */
+ struct ioh_i2s_config_tx_reg tx;
+
+ /* RX channel settings */
+ struct ioh_i2s_config_rx_reg rx;
+};
+
+static struct snd_pcm_hardware snd_card_ml7213i2s_capture[MAX_I2S_CH] = {
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_RX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_RX,
+ .period_bytes_max = MAX_PERIOD_SIZE_RX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_RX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_RX,
+ .period_bytes_max = MAX_PERIOD_SIZE_RX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_RX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_RX,
+ .period_bytes_max = MAX_PERIOD_SIZE_RX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_RX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_RX,
+ .period_bytes_max = MAX_PERIOD_SIZE_RX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_RX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_RX,
+ .period_bytes_max = MAX_PERIOD_SIZE_RX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_RX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_RX,
+ .period_bytes_max = MAX_PERIOD_SIZE_RX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+};
+
+static struct snd_pcm_hardware snd_card_ml7213i2s_playback[MAX_I2S_CH] = {
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_TX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_TX,
+ .period_bytes_max = MAX_PERIOD_SIZE_TX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_TX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_TX,
+ .period_bytes_max = MAX_PERIOD_SIZE_TX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_TX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_TX,
+ .period_bytes_max = MAX_PERIOD_SIZE_TX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_TX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_TX,
+ .period_bytes_max = MAX_PERIOD_SIZE_TX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_TX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_TX,
+ .period_bytes_max = MAX_PERIOD_SIZE_TX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+ {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SUPPORT_FORMAT,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = (MAX_PERIOD_SIZE_TX *
+ USE_PERIODS_MAX),
+ .period_bytes_min = MAX_PERIOD_SIZE_TX,
+ .period_bytes_max = MAX_PERIOD_SIZE_TX,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+ },
+};
+#endif
--
1.7.4.4
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