dmaengine: mmp-tdma: Split device_control

Split the device_control callback of the Marvell MMP TDMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index bfb4695..a8a79b1 100644 (file)
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -164,33 +164,46 @@ static void mmp_tdma_enable_chan(struct mmp_tdma_chan *tdmac)
        tdmac->status = DMA_IN_PROGRESS;
 }
 
-static void mmp_tdma_disable_chan(struct mmp_tdma_chan *tdmac)
+static int mmp_tdma_disable_chan(struct dma_chan *chan)
 {
+       struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
+
        writel(readl(tdmac->reg_base + TDCR) & ~TDCR_CHANEN,
                                        tdmac->reg_base + TDCR);
 
        tdmac->status = DMA_COMPLETE;
+
+       return 0;
 }
 
-static void mmp_tdma_resume_chan(struct mmp_tdma_chan *tdmac)
+static int mmp_tdma_resume_chan(struct dma_chan *chan)
 {
+       struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
+
        writel(readl(tdmac->reg_base + TDCR) | TDCR_CHANEN,
                                        tdmac->reg_base + TDCR);
        tdmac->status = DMA_IN_PROGRESS;
+
+       return 0;
 }
 
-static void mmp_tdma_pause_chan(struct mmp_tdma_chan *tdmac)
+static int mmp_tdma_pause_chan(struct dma_chan *chan)
 {
+       struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
+
        writel(readl(tdmac->reg_base + TDCR) & ~TDCR_CHANEN,
                                        tdmac->reg_base + TDCR);
        tdmac->status = DMA_PAUSED;
+
+       return 0;
 }
 
-static int mmp_tdma_config_chan(struct mmp_tdma_chan *tdmac)
+static int mmp_tdma_config_chan(struct dma_chan *chan)
 {
+       struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
        unsigned int tdcr = 0;
 
-       mmp_tdma_disable_chan(tdmac);
+       mmp_tdma_disable_chan(chan);
 
        if (tdmac->dir == DMA_MEM_TO_DEV)
                tdcr = TDCR_DSTDIR_ADDR_HOLD | TDCR_SRCDIR_ADDR_INC;
@@ -452,42 +465,32 @@ err_out:
        return NULL;
 }
 
-static int mmp_tdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
-               unsigned long arg)
+static int mmp_tdma_terminate_all(struct dma_chan *chan)
 {
        struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
-       struct dma_slave_config *dmaengine_cfg = (void *)arg;
-       int ret = 0;
-
-       switch (cmd) {
-       case DMA_TERMINATE_ALL:
-               mmp_tdma_disable_chan(tdmac);
-               /* disable interrupt */
-               mmp_tdma_enable_irq(tdmac, false);
-               break;
-       case DMA_PAUSE:
-               mmp_tdma_pause_chan(tdmac);
-               break;
-       case DMA_RESUME:
-               mmp_tdma_resume_chan(tdmac);
-               break;
-       case DMA_SLAVE_CONFIG:
-               if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) {
-                       tdmac->dev_addr = dmaengine_cfg->src_addr;
-                       tdmac->burst_sz = dmaengine_cfg->src_maxburst;
-                       tdmac->buswidth = dmaengine_cfg->src_addr_width;
-               } else {
-                       tdmac->dev_addr = dmaengine_cfg->dst_addr;
-                       tdmac->burst_sz = dmaengine_cfg->dst_maxburst;
-                       tdmac->buswidth = dmaengine_cfg->dst_addr_width;
-               }
-               tdmac->dir = dmaengine_cfg->direction;
-               return mmp_tdma_config_chan(tdmac);
-       default:
-               ret = -ENOSYS;
+
+       mmp_tdma_disable_chan(chan);
+       /* disable interrupt */
+       mmp_tdma_enable_irq(tdmac, false);
+}
+
+static int mmp_tdma_config(struct dma_chan *chan,
+                          struct dma_slave_config *dmaengine_cfg)
+{
+       struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
+
+       if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) {
+               tdmac->dev_addr = dmaengine_cfg->src_addr;
+               tdmac->burst_sz = dmaengine_cfg->src_maxburst;
+               tdmac->buswidth = dmaengine_cfg->src_addr_width;
+       } else {
+               tdmac->dev_addr = dmaengine_cfg->dst_addr;
+               tdmac->burst_sz = dmaengine_cfg->dst_maxburst;
+               tdmac->buswidth = dmaengine_cfg->dst_addr_width;
        }
+       tdmac->dir = dmaengine_cfg->direction;
 
-       return ret;
+       return mmp_tdma_config_chan(chan);
 }
 
 static enum dma_status mmp_tdma_tx_status(struct dma_chan *chan,
@@ -668,7 +671,10 @@ static int mmp_tdma_probe(struct platform_device *pdev)
        tdev->device.device_prep_dma_cyclic = mmp_tdma_prep_dma_cyclic;
        tdev->device.device_tx_status = mmp_tdma_tx_status;
        tdev->device.device_issue_pending = mmp_tdma_issue_pending;
-       tdev->device.device_control = mmp_tdma_control;
+       tdev->device.device_config = mmp_tdma_config;
+       tdev->device.device_pause = mmp_tdma_pause_chan;
+       tdev->device.device_resume = mmp_tdma_resume_chan;
+       tdev->device.device_terminate_all = mmp_tdma_terminate_all;
        tdev->device.copy_align = TDMA_ALIGNMENT;
 
        dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));