dmaengine: dw_dmac: Add clk_{un}prepare() support

clk_{un}prepare is mandatory for platforms using common clock framework. Since
this driver is used by SPEAr platform, which supports common clock framework,
add clk_{un}prepare() support for it.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 7439079..300d976 100644 (file)
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1429,7 +1429,7 @@ static int __init dw_probe(struct platform_device *pdev)
                err = PTR_ERR(dw->clk);
                goto err_clk;
        }
-       clk_enable(dw->clk);
+       clk_prepare_enable(dw->clk);
 
        /* force dma off, just in case */
        dw_dma_off(dw);
@@ -1510,7 +1510,7 @@ static int __init dw_probe(struct platform_device *pdev)
        return 0;
 
 err_irq:
-       clk_disable(dw->clk);
+       clk_disable_unprepare(dw->clk);
        clk_put(dw->clk);
 err_clk:
        iounmap(dw->regs);
@@ -1540,7 +1540,7 @@ static int __exit dw_remove(struct platform_device *pdev)
                channel_clear_bit(dw, CH_EN, dwc->mask);
        }
 
-       clk_disable(dw->clk);
+       clk_disable_unprepare(dw->clk);
        clk_put(dw->clk);
 
        iounmap(dw->regs);
@@ -1559,7 +1559,7 @@ static void dw_shutdown(struct platform_device *pdev)
        struct dw_dma   *dw = platform_get_drvdata(pdev);
 
        dw_dma_off(platform_get_drvdata(pdev));
-       clk_disable(dw->clk);
+       clk_disable_unprepare(dw->clk);
 }
 
 static int dw_suspend_noirq(struct device *dev)
@@ -1568,7 +1568,7 @@ static int dw_suspend_noirq(struct device *dev)
        struct dw_dma   *dw = platform_get_drvdata(pdev);
 
        dw_dma_off(platform_get_drvdata(pdev));
-       clk_disable(dw->clk);
+       clk_disable_unprepare(dw->clk);
 
        return 0;
 }
@@ -1578,7 +1578,7 @@ static int dw_resume_noirq(struct device *dev)
        struct platform_device *pdev = to_platform_device(dev);
        struct dw_dma   *dw = platform_get_drvdata(pdev);
 
-       clk_enable(dw->clk);
+       clk_prepare_enable(dw->clk);
        dma_writel(dw, CFG, DW_CFG_DMA_EN);
        return 0;
 }