clk: axm5516: Migrate to clk_hw based OF and registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, allowing us to move closer to a clear split of
consumer and provider clk APIs. Make thing simple by using the
existing clk_hw array and implementing a custom DT clk provider
get function to map the clk spec id to a clk_hw pointer.

Cc: Anders Berg <anders.berg@lsi.com>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/drivers/clk/clk-axm5516.c b/drivers/clk/clk-axm5516.c
index c7c91a5ecf8be8a2ceab3b143d762f1daabd8810..5d7ae333257e4a99466c7c8e0d688b2f94bc01e2 100644 (file)
--- a/drivers/clk/clk-axm5516.c
+++ b/drivers/clk/clk-axm5516.c
@@ -516,6 +516,19 @@ static struct axxia_clk *axmclk_clocks[] = {
        [AXXIA_CLK_MMC]      = &clk_mmc_mux.aclk,
 };
 
+static struct clk_hw *
+of_clk_axmclk_get(struct of_phandle_args *clkspec, void *unused)
+{
+       unsigned int idx = clkspec->args[0];
+
+       if (idx >= ARRAY_SIZE(axmclk_clocks)) {
+               pr_err("%s: invalid index %u\n", __func__, idx);
+               return ERR_PTR(-EINVAL);
+       }
+
+       return &axmclk_clocks[idx]->hw;
+}
+
 static const struct regmap_config axmclk_regmap_config = {
        .reg_bits       = 32,
        .reg_stride     = 4,
@@ -530,21 +543,14 @@ static const struct of_device_id axmclk_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, axmclk_match_table);
 
-struct axmclk_priv {
-       struct clk_onecell_data onecell;
-       struct clk *clks[];
-};
-
 static int axmclk_probe(struct platform_device *pdev)
 {
        void __iomem *base;
        struct resource *res;
        int i, ret;
        struct device *dev = &pdev->dev;
-       struct clk *clk;
        struct regmap *regmap;
        size_t num_clks;
-       struct axmclk_priv *priv;
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        base = devm_ioremap_resource(dev, res);
@@ -557,29 +563,18 @@ static int axmclk_probe(struct platform_device *pdev)
 
        num_clks = ARRAY_SIZE(axmclk_clocks);
        pr_info("axmclk: supporting %zu clocks\n", num_clks);
-       priv = devm_kzalloc(dev, sizeof(*priv) + sizeof(*priv->clks) * num_clks,
-                           GFP_KERNEL);
-       if (!priv)
-               return -ENOMEM;
-
-       priv->onecell.clks = priv->clks;
-       priv->onecell.clk_num = num_clks;
 
        /* Update each entry with the allocated regmap and register the clock
         * with the common clock framework
         */
        for (i = 0; i < num_clks; i++) {
                axmclk_clocks[i]->regmap = regmap;
-               clk = devm_clk_register(dev, &axmclk_clocks[i]->hw);
-               if (IS_ERR(clk))
-                       return PTR_ERR(clk);
-               priv->clks[i] = clk;
+               ret = devm_clk_hw_register(dev, &axmclk_clocks[i]->hw);
+               if (ret)
+                       return ret;
        }
 
-       ret = of_clk_add_provider(dev->of_node,
-                                 of_clk_src_onecell_get, &priv->onecell);
-
-       return ret;
+       return of_clk_add_hw_provider(dev->of_node, of_clk_axmclk_get, NULL);
 }
 
 static int axmclk_remove(struct platform_device *pdev)