ARM: S5P6440: Remove usage of clk_h and add clk_hclk clock

The clk_h clock is of type 'struct clk' whereas on S5P6440,
the hclk is more suitable to be of type 'struct clksrc_clk'
(since hclk clock is divided version of armclk)

This patch modifies the following.

1. Adds the 'clk_hclk' clock which is of type 'struct clksrc_clk'.
2. Removes all references to the clk_h clock.
3. Addes clk_hclk into the list of sysclks.
4. The clock rate 'hclk' is modified to be derived from clk_hclk.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 12 insertions, 2 deletions

diff --git a/arch/arm/mach-s5p6440/clock.c b/arch/arm/mach-s5p6440/clock.c
index 2c6dd544ff62..bc0458e6d420 100644
--- a/arch/arm/mach-s5p6440/clock.c
+++ b/arch/arm/mach-s5p6440/clock.c
@@ -266,6 +266,15 @@ static struct clksrc_clk clk_dout_mpll = {
         .reg_div        = { .reg = S5P_CLK_DIV0, .shift = 4, .size = 1 },
 };
 
+static struct clksrc_clk clk_hclk = {
+        .clk    = {
+                .name   = "clk_hclk",
+                .id     = -1,
+                .parent = &clk_armclk.clk,
+        },
+        .reg_div        = { .reg = S5P_CLK_DIV0, .shift = 8, .size = 4 },
+};
+
 int s5p6440_clk48m_ctrl(struct clk *clk, int enable)
 {
         unsigned long flags;
@@ -321,7 +330,7 @@ static struct clk init_clocks_disable[] = {
         {
                 .name           = "nand",
                 .id             = -1,
-                .parent         = &clk_h,
+                .parent         = &clk_hclk.clk,
                 .enable         = s5p6440_mem_ctrl,
                 .ctrlbit        = S5P_CLKCON_MEM0_HCLK_NFCON,
         }, {
@@ -580,6 +589,7 @@ static struct clksrc_clk *sysclks[] = {
         &clk_mout_mpll,
         &clk_dout_mpll,
         &clk_armclk,
+        &clk_hclk,
 };
 
 void __init_or_cpufreq s5p6440_setup_clocks(void)
@@ -628,7 +638,7 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
                         print_mhz(apll), print_mhz(mpll), print_mhz(epll));
 
         fclk = clk_get_rate(&clk_armclk.clk);
-        hclk = fclk / GET_DIV(clkdiv0, S5P_CLKDIV0_HCLK);
+        hclk = clk_get_rate(&clk_hclk.clk);
         pclk = hclk / GET_DIV(clkdiv0, S5P_CLKDIV0_PCLK);
 
         if (__raw_readl(S5P_OTHERS) & S5P_OTHERS_HCLK_LOW_SEL_MPLL) {