dmaengine: cppi41: Remove usbss_mem

In order to make CPPI 4.1 DMA driver more generic, accesses to USBSS
have been removed. So it is not required anymore to map the "glue"
register's.
Remove usbss_mem.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index d74cee0..34a8156 100644 (file)
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -131,7 +131,6 @@ struct cppi41_dd {
        u32 first_td_desc;
        struct cppi41_channel *chan_busy[ALLOC_DECS_NUM];
 
-       void __iomem *usbss_mem;
        void __iomem *ctrl_mem;
        void __iomem *sched_mem;
        void __iomem *qmgr_mem;
@@ -995,6 +994,7 @@ static int cppi41_dma_probe(struct platform_device *pdev)
        struct cppi41_dd *cdd;
        struct device *dev = &pdev->dev;
        const struct cppi_glue_infos *glue_info;
+       int index;
        int irq;
        int ret;
 
@@ -1021,16 +1021,20 @@ static int cppi41_dma_probe(struct platform_device *pdev)
        INIT_LIST_HEAD(&cdd->ddev.channels);
        cpp41_dma_info.dma_cap = cdd->ddev.cap_mask;
 
-       cdd->usbss_mem = of_iomap(dev->of_node, 0);
-       cdd->ctrl_mem = of_iomap(dev->of_node, 1);
-       cdd->sched_mem = of_iomap(dev->of_node, 2);
-       cdd->qmgr_mem = of_iomap(dev->of_node, 3);
+       index = of_property_match_string(dev->of_node,
+                                        "reg-names", "controller");
+       if (index < 0)
+               return index;
+
+       cdd->ctrl_mem = of_iomap(dev->of_node, index);
+       cdd->sched_mem = of_iomap(dev->of_node, index + 1);
+       cdd->qmgr_mem = of_iomap(dev->of_node, index + 2);
        spin_lock_init(&cdd->lock);
        INIT_LIST_HEAD(&cdd->pending);
 
        platform_set_drvdata(pdev, cdd);
 
-       if (!cdd->usbss_mem || !cdd->ctrl_mem || !cdd->sched_mem ||
+       if (!cdd->ctrl_mem || !cdd->sched_mem ||
                        !cdd->qmgr_mem)
                return -ENXIO;
 
@@ -1090,7 +1094,6 @@ err_init_cppi:
 err_get_sync:
        pm_runtime_put_sync(dev);
        pm_runtime_disable(dev);
-       iounmap(cdd->usbss_mem);
        iounmap(cdd->ctrl_mem);
        iounmap(cdd->sched_mem);
        iounmap(cdd->qmgr_mem);
@@ -1112,7 +1115,6 @@ static int cppi41_dma_remove(struct platform_device *pdev)
        devm_free_irq(&pdev->dev, cdd->irq, cdd);
        cleanup_chans(cdd);
        deinit_cppi41(&pdev->dev, cdd);
-       iounmap(cdd->usbss_mem);
        iounmap(cdd->ctrl_mem);
        iounmap(cdd->sched_mem);
        iounmap(cdd->qmgr_mem);