[PATCH RFC v2 5/5] HACK mmc: mxcmmc: enable clocks for the MPC512x

[Alexander Popov]

From: Gerhard Sittig <gsi at denx.de>

Q&D HACK to enable SD card support without correct COMMON_CLK support,
best viewed with 'git diff -w -b', NOT acceptable for mainline (NAKed)

Signed-off-by: Gerhard Sittig <gsi at denx.de>
---
 drivers/mmc/host/mxcmmc.c |   41 +++++++++++++++++++++++++++---
-----------
 1 file changed, 27 insertions(+), 14 deletions(-)

diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index d503635..b9d21cc 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -1121,20 +1121,29 @@ static int mxcmci_probe(struct platform_device *pdev)
        host->res = r;
        host->irq = irq;

-       host->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
-       if (IS_ERR(host->clk_ipg)) {
-               ret = PTR_ERR(host->clk_ipg);
-               goto out_iounmap;
-       }
+       if (!is_mpc512x_mmc(host)) {
+               host->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+               if (IS_ERR(host->clk_ipg)) {
+                       ret = PTR_ERR(host->clk_ipg);
+                       goto out_iounmap;
+               }

-       host->clk_per = devm_clk_get(&pdev->dev, "per");
-       if (IS_ERR(host->clk_per)) {
-               ret = PTR_ERR(host->clk_per);
-               goto out_iounmap;
+               host->clk_per = devm_clk_get(&pdev->dev, "per");
+               if (IS_ERR(host->clk_per)) {
+                       ret = PTR_ERR(host->clk_per);
+                       goto out_iounmap;
+               }
+       } else {
+               host->clk_per = devm_clk_get(&pdev->dev, "sdhc_clk");
+               if (IS_ERR(host->clk_per)) {
+                       ret = PTR_ERR(host->clk_per);
+                       goto out_iounmap;
+               }
        }

        clk_prepare_enable(host->clk_per);
-       clk_prepare_enable(host->clk_ipg);
+       if (host->clk_ipg)
+               clk_prepare_enable(host->clk_ipg);

        mxcmci_softreset(host);

@@ -1204,7 +1213,8 @@ out_free_dma:
                dma_release_channel(host->dma);
 out_clk_put:
        clk_disable_unprepare(host->clk_per);
-       clk_disable_unprepare(host->clk_ipg);
+       if (host->clk_ipg)
+               clk_disable_unprepare(host->clk_ipg);
 out_iounmap:
        iounmap(host->base);
 out_free:
@@ -1236,7 +1246,8 @@ static int mxcmci_remove(struct platform_device *pdev)
                dma_release_channel(host->dma);

        clk_disable_unprepare(host->clk_per);
-       clk_disable_unprepare(host->clk_ipg);
+       if (host->clk_ipg)
+               clk_disable_unprepare(host->clk_ipg);

        release_mem_region(host->res->start, resource_size(host->res));

@@ -1255,7 +1266,8 @@ static int mxcmci_suspend(struct device *dev)
        if (mmc)
                ret = mmc_suspend_host(mmc);
        clk_disable_unprepare(host->clk_per);
-       clk_disable_unprepare(host->clk_ipg);
+       if (host->clk_ipg)
+               clk_disable_unprepare(host->clk_ipg);

        return ret;
 }
@@ -1267,7 +1279,8 @@ static int mxcmci_resume(struct device *dev)
        int ret = 0;

        clk_prepare_enable(host->clk_per);
-       clk_prepare_enable(host->clk_ipg);
+       if (host->clk_ipg)
+               clk_prepare_enable(host->clk_ipg);
        if (mmc)
                ret = mmc_resume_host(mmc);


--
1.7.10.4