Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

[pandora-kernel.git] / drivers / dma / intel_mid_dma.c

diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 2ae1086..338bc4e 100644 (file)
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -92,13 +92,13 @@ static int get_block_ts(int len, int tx_width, int block_size)
        int byte_width = 0, block_ts = 0;
 
        switch (tx_width) {
-       case LNW_DMA_WIDTH_8BIT:
+       case DMA_SLAVE_BUSWIDTH_1_BYTE:
                byte_width = 1;
                break;
-       case LNW_DMA_WIDTH_16BIT:
+       case DMA_SLAVE_BUSWIDTH_2_BYTES:
                byte_width = 2;
                break;
-       case LNW_DMA_WIDTH_32BIT:
+       case DMA_SLAVE_BUSWIDTH_4_BYTES:
        default:
                byte_width = 4;
                break;
@@ -367,7 +367,7 @@ static int midc_lli_fill_sg(struct intel_mid_dma_chan *midc,
        int i;
 
        pr_debug("MDMA: Entered midc_lli_fill_sg\n");
-       mids = midc->chan.private;
+       mids = midc->mid_slave;
 
        lli_bloc_desc = desc->lli;
        lli_next = desc->lli_phys;
@@ -398,9 +398,9 @@ static int midc_lli_fill_sg(struct intel_mid_dma_chan *midc,
                sg_phy_addr = sg_phys(sg);
                if (desc->dirn ==  DMA_TO_DEVICE) {
                        lli_bloc_desc->sar  = sg_phy_addr;
-                       lli_bloc_desc->dar  = mids->per_addr;
+                       lli_bloc_desc->dar  = mids->dma_slave.dst_addr;
                } else if (desc->dirn ==  DMA_FROM_DEVICE) {
-                       lli_bloc_desc->sar  = mids->per_addr;
+                       lli_bloc_desc->sar  = mids->dma_slave.src_addr;
                        lli_bloc_desc->dar  = sg_phy_addr;
                }
                /*Copy values into block descriptor in system memroy*/
@@ -507,6 +507,23 @@ static enum dma_status intel_mid_dma_tx_status(struct dma_chan *chan,
        return ret;
 }
 
+static int dma_slave_control(struct dma_chan *chan, unsigned long arg)
+{
+       struct intel_mid_dma_chan       *midc = to_intel_mid_dma_chan(chan);
+       struct dma_slave_config  *slave = (struct dma_slave_config *)arg;
+       struct intel_mid_dma_slave *mid_slave;
+
+       BUG_ON(!midc);
+       BUG_ON(!slave);
+       pr_debug("MDMA: slave control called\n");
+
+       mid_slave = to_intel_mid_dma_slave(slave);
+
+       BUG_ON(!mid_slave);
+
+       midc->mid_slave = mid_slave;
+       return 0;
+}
 /**
  * intel_mid_dma_device_control -      DMA device control
  * @chan: chan for DMA control
@@ -523,6 +540,9 @@ static int intel_mid_dma_device_control(struct dma_chan *chan,
        struct intel_mid_dma_desc       *desc, *_desc;
        union intel_mid_dma_cfg_lo cfg_lo;
 
+       if (cmd == DMA_SLAVE_CONFIG)
+               return dma_slave_control(chan, arg);
+
        if (cmd != DMA_TERMINATE_ALL)
                return -ENXIO;
 
@@ -540,7 +560,6 @@ static int intel_mid_dma_device_control(struct dma_chan *chan,
        /* Disable interrupts */
        disable_dma_interrupt(midc);
        midc->descs_allocated = 0;
-       midc->slave = NULL;
 
        spin_unlock_bh(&midc->lock);
        list_for_each_entry_safe(desc, _desc, &midc->active_list, desc_node) {
@@ -578,23 +597,24 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_memcpy(
        union intel_mid_dma_ctl_hi ctl_hi;
        union intel_mid_dma_cfg_lo cfg_lo;
        union intel_mid_dma_cfg_hi cfg_hi;
-       enum intel_mid_dma_width width = 0;
+       enum dma_slave_buswidth width;
 
        pr_debug("MDMA: Prep for memcpy\n");
-       WARN_ON(!chan);
+       BUG_ON(!chan);
        if (!len)
                return NULL;
 
-       mids = chan->private;
-       WARN_ON(!mids);
-
        midc = to_intel_mid_dma_chan(chan);
-       WARN_ON(!midc);
+       BUG_ON(!midc);
+
+       mids = midc->mid_slave;
+       BUG_ON(!mids);
 
        pr_debug("MDMA:called for DMA %x CH %d Length %zu\n",
                                midc->dma->pci_id, midc->ch_id, len);
        pr_debug("MDMA:Cfg passed Mode %x, Dirn %x, HS %x, Width %x\n",
-               mids->cfg_mode, mids->dirn, mids->hs_mode, mids->src_width);
+                       mids->cfg_mode, mids->dma_slave.direction,
+                       mids->hs_mode, mids->dma_slave.src_addr_width);
 
        /*calculate CFG_LO*/
        if (mids->hs_mode == LNW_DMA_SW_HS) {
@@ -613,13 +633,13 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_memcpy(
                if (midc->dma->pimr_mask) {
                        cfg_hi.cfgx.protctl = 0x0; /*default value*/
                        cfg_hi.cfgx.fifo_mode = 1;
-                       if (mids->dirn == DMA_TO_DEVICE) {
+                       if (mids->dma_slave.direction == DMA_TO_DEVICE) {
                                cfg_hi.cfgx.src_per = 0;
                                if (mids->device_instance == 0)
                                        cfg_hi.cfgx.dst_per = 3;
                                if (mids->device_instance == 1)
                                        cfg_hi.cfgx.dst_per = 1;
-                       } else if (mids->dirn == DMA_FROM_DEVICE) {
+                       } else if (mids->dma_slave.direction == DMA_FROM_DEVICE) {
                                if (mids->device_instance == 0)
                                        cfg_hi.cfgx.src_per = 2;
                                if (mids->device_instance == 1)
@@ -636,7 +656,7 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_memcpy(
        /*calculate CTL_HI*/
        ctl_hi.ctlx.reser = 0;
        ctl_hi.ctlx.done  = 0;
-       width = mids->src_width;
+       width = mids->dma_slave.src_addr_width;
 
        ctl_hi.ctlx.block_ts = get_block_ts(len, width, midc->dma->block_size);
        pr_debug("MDMA:calc len %d for block size %d\n",
@@ -644,21 +664,21 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_memcpy(
        /*calculate CTL_LO*/
        ctl_lo.ctl_lo = 0;
        ctl_lo.ctlx.int_en = 1;
-       ctl_lo.ctlx.dst_tr_width = mids->dst_width;
-       ctl_lo.ctlx.src_tr_width = mids->src_width;
-       ctl_lo.ctlx.dst_msize = mids->src_msize;
-       ctl_lo.ctlx.src_msize = mids->dst_msize;
+       ctl_lo.ctlx.dst_tr_width = mids->dma_slave.dst_addr_width;
+       ctl_lo.ctlx.src_tr_width = mids->dma_slave.src_addr_width;
+       ctl_lo.ctlx.dst_msize = mids->dma_slave.src_maxburst;
+       ctl_lo.ctlx.src_msize = mids->dma_slave.dst_maxburst;
 
        if (mids->cfg_mode == LNW_DMA_MEM_TO_MEM) {
                ctl_lo.ctlx.tt_fc = 0;
                ctl_lo.ctlx.sinc = 0;
                ctl_lo.ctlx.dinc = 0;
        } else {
-               if (mids->dirn == DMA_TO_DEVICE) {
+               if (mids->dma_slave.direction == DMA_TO_DEVICE) {
                        ctl_lo.ctlx.sinc = 0;
                        ctl_lo.ctlx.dinc = 2;
                        ctl_lo.ctlx.tt_fc = 1;
-               } else if (mids->dirn == DMA_FROM_DEVICE) {
+               } else if (mids->dma_slave.direction == DMA_FROM_DEVICE) {
                        ctl_lo.ctlx.sinc = 2;
                        ctl_lo.ctlx.dinc = 0;
                        ctl_lo.ctlx.tt_fc = 2;
@@ -681,7 +701,7 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_memcpy(
        desc->ctl_lo = ctl_lo.ctl_lo;
        desc->ctl_hi = ctl_hi.ctl_hi;
        desc->width = width;
-       desc->dirn = mids->dirn;
+       desc->dirn = mids->dma_slave.direction;
        desc->lli_phys = 0;
        desc->lli = NULL;
        desc->lli_pool = NULL;
@@ -722,7 +742,7 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg(
        midc = to_intel_mid_dma_chan(chan);
        BUG_ON(!midc);
 
-       mids = chan->private;
+       mids = midc->mid_slave;
        BUG_ON(!mids);
 
        if (!midc->dma->pimr_mask) {