clk: samsung: Modify _get_rate() helper to use __clk_lookup()

There is no need to use clkdev inside the clock driver to retrieve the
clocks for internal use. Instead __clk_lookup() helper can be used to
look up clocks by their platform name.

This patch modifies the behavior of _get_rate() helper to look up clocks
by platform name and adjusts all users of it to pass platform names
instead of clkdev aliases.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

3 files changed, 7 insertions, 9 deletions

diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
index d70d3cbaacfe..cf7afde6e758 100644
--- a/drivers/clk/samsung/clk-exynos4.c
+++ b/drivers/clk/samsung/clk-exynos4.c
@@ -1092,9 +1092,9 @@ static void __init exynos4_clk_init(struct device_node *np,
         pr_info("%s clocks: sclk_apll = %ld, sclk_mpll = %ld\n"
                 "\tsclk_epll = %ld, sclk_vpll = %ld, arm_clk = %ld\n",
                 exynos4_soc == EXYNOS4210 ? "Exynos4210" : "Exynos4x12",
-                _get_rate("sclk_apll"), _get_rate("mout_mpll"),
+                _get_rate("sclk_apll"), _get_rate("sclk_mpll"),
                 _get_rate("sclk_epll"), _get_rate("sclk_vpll"),
-                _get_rate("armclk"));
+                _get_rate("arm_clk"));
 }
 
 
diff --git a/drivers/clk/samsung/clk-exynos5440.c b/drivers/clk/samsung/clk-exynos5440.c
index 4ef38e045e39..f8658945bfd2 100644
--- a/drivers/clk/samsung/clk-exynos5440.c
+++ b/drivers/clk/samsung/clk-exynos5440.c
@@ -132,7 +132,7 @@ static void __init exynos5440_clk_init(struct device_node *np)
         samsung_clk_register_gate(exynos5440_gate_clks,
                         ARRAY_SIZE(exynos5440_gate_clks));
 
-        pr_info("Exynos5440: arm_clk = %ldHz\n", _get_rate("armclk"));
+        pr_info("Exynos5440: arm_clk = %ldHz\n", _get_rate("arm_clk"));
         pr_info("exynos5440 clock initialization complete\n");
 }
 CLK_OF_DECLARE(exynos5440_clk, "samsung,exynos5440-clock", exynos5440_clk_init);
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c
index cd3c40ab50f3..f503f32e2f80 100644
--- a/drivers/clk/samsung/clk.c
+++ b/drivers/clk/samsung/clk.c
@@ -307,14 +307,12 @@ void __init samsung_clk_of_register_fixed_ext(
 unsigned long _get_rate(const char *clk_name)
 {
         struct clk *clk;
-        unsigned long rate;
 
-        clk = clk_get(NULL, clk_name);
-        if (IS_ERR(clk)) {
+        clk = __clk_lookup(clk_name);
+        if (!clk) {
                 pr_err("%s: could not find clock %s\n", __func__, clk_name);
                 return 0;
         }
-        rate = clk_get_rate(clk);
-        clk_put(clk);
-        return rate;
+
+        return clk_get_rate(clk);
 }