mmc: sdhci-bcm-kona: kill the "external_clk" member in driver private struct

Actually we can use the "clk" in the struct sdhci_pltfm_host. Also
change the "external clock" to "core clock" and kill two redundant
private functions in this driver as suggested by Ray Jui.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c
index 34bb8f9..5bc263b 100644 (file)
--- a/drivers/mmc/host/sdhci-bcm-kona.c
+++ b/drivers/mmc/host/sdhci-bcm-kona.c
@@ -54,7 +54,6 @@
 
 struct sdhci_bcm_kona_dev {
        struct mutex    write_lock; /* protect back to back writes */
-       struct clk      *external_clk;
 };
 
 
@@ -175,24 +174,6 @@ static void sdhci_bcm_kona_card_event(struct sdhci_host *host)
        }
 }
 
-/*
- * Get the base clock. Use central clock source for now. Not sure if different
- * clock speed to each dev is allowed
- */
-static unsigned int sdhci_bcm_kona_get_max_clk(struct sdhci_host *host)
-{
-       struct sdhci_bcm_kona_dev *kona_dev;
-       struct sdhci_pltfm_host *pltfm_priv = sdhci_priv(host);
-       kona_dev = sdhci_pltfm_priv(pltfm_priv);
-
-       return host->mmc->f_max;
-}
-
-static unsigned int sdhci_bcm_kona_get_timeout_clock(struct sdhci_host *host)
-{
-       return sdhci_bcm_kona_get_max_clk(host);
-}
-
 static void sdhci_bcm_kona_init_74_clocks(struct sdhci_host *host,
                                u8 power_mode)
 {
@@ -207,8 +188,8 @@ static void sdhci_bcm_kona_init_74_clocks(struct sdhci_host *host,
 
 static struct sdhci_ops sdhci_bcm_kona_ops = {
        .set_clock = sdhci_set_clock,
-       .get_max_clock = sdhci_bcm_kona_get_max_clk,
-       .get_timeout_clock = sdhci_bcm_kona_get_timeout_clock,
+       .get_max_clock = sdhci_pltfm_clk_get_max_clock,
+       .get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
        .platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks,
        .set_bus_width = sdhci_set_bus_width,
        .reset = sdhci_reset,
@@ -264,21 +245,21 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev)
                goto err_pltfm_free;
        }
 
-       /* Get and enable the external clock */
-       kona_dev->external_clk = devm_clk_get(dev, NULL);
-       if (IS_ERR(kona_dev->external_clk)) {
-               dev_err(dev, "Failed to get external clock\n");
-               ret = PTR_ERR(kona_dev->external_clk);
+       /* Get and enable the core clock */
+       pltfm_priv->clk = devm_clk_get(dev, NULL);
+       if (IS_ERR(pltfm_priv->clk)) {
+               dev_err(dev, "Failed to get core clock\n");
+               ret = PTR_ERR(pltfm_priv->clk);
                goto err_pltfm_free;
        }
 
-       if (clk_set_rate(kona_dev->external_clk, host->mmc->f_max) != 0) {
-               dev_err(dev, "Failed to set rate external clock\n");
+       if (clk_set_rate(pltfm_priv->clk, host->mmc->f_max) != 0) {
+               dev_err(dev, "Failed to set rate core clock\n");
                goto err_pltfm_free;
        }
 
-       if (clk_prepare_enable(kona_dev->external_clk) != 0) {
-               dev_err(dev, "Failed to enable external clock\n");
+       if (clk_prepare_enable(pltfm_priv->clk) != 0) {
+               dev_err(dev, "Failed to enable core clock\n");
                goto err_pltfm_free;
        }
 
@@ -333,7 +314,7 @@ err_reset:
        sdhci_bcm_kona_sd_reset(host);
 
 err_clk_disable:
-       clk_disable_unprepare(kona_dev->external_clk);
+       clk_disable_unprepare(pltfm_priv->clk);
 
 err_pltfm_free:
        sdhci_pltfm_free(pdev);
@@ -346,12 +327,11 @@ static int sdhci_bcm_kona_remove(struct platform_device *pdev)
 {
        struct sdhci_host *host = platform_get_drvdata(pdev);
        struct sdhci_pltfm_host *pltfm_priv = sdhci_priv(host);
-       struct sdhci_bcm_kona_dev *kona_dev = sdhci_pltfm_priv(pltfm_priv);
        int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
 
        sdhci_remove_host(host, dead);
 
-       clk_disable_unprepare(kona_dev->external_clk);
+       clk_disable_unprepare(pltfm_priv->clk);
 
        sdhci_pltfm_free(pdev);