ARM: OMAP: This patch enables I2C-2 support for 2430 SDP

[linux-2.6-omap-h63xx.git] / arch / arm / mach-pnx4008 / clock.c

diff --git a/arch/arm/mach-pnx4008/clock.c b/arch/arm/mach-pnx4008/clock.c
index 285b22f631e9f47480f75d85108ecae38b8a99a0..daa8d3d98eff13b7d33927d7a8218bdc021d4bc7 100644 (file)
--- a/arch/arm/mach-pnx4008/clock.c
+++ b/arch/arm/mach-pnx4008/clock.c
@@ -735,6 +735,16 @@ static struct clk uart6_ck = {
        .enable_reg = UARTCLKCTRL_REG,
 };
 
+static struct clk wdt_ck = {
+       .name = "wdt_ck",
+       .parent = &per_ck,
+       .flags = NEEDS_INITIALIZATION,
+       .round_rate = &on_off_round_rate,
+       .set_rate = &on_off_set_rate,
+       .enable_shift = 0,
+       .enable_reg = TIMCLKCTRL_REG,
+};
+
 /* These clocks are visible outside this module
  * and can be initialized
  */
@@ -765,8 +775,57 @@ static struct clk *onchip_clks[] = {
        &uart4_ck,
        &uart5_ck,
        &uart6_ck,
+       &wdt_ck,
 };
 
+static int local_clk_enable(struct clk *clk)
+{
+       int ret = 0;
+
+       if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate
+           && clk->user_rate)
+               ret = clk->set_rate(clk, clk->user_rate);
+       return ret;
+}
+
+static void local_clk_disable(struct clk *clk)
+{
+       if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate)
+               clk->set_rate(clk, 0);
+}
+
+static void local_clk_unuse(struct clk *clk)
+{
+       if (clk->usecount > 0 && !(--clk->usecount)) {
+               local_clk_disable(clk);
+               if (clk->parent)
+                       local_clk_unuse(clk->parent);
+       }
+}
+
+static int local_clk_use(struct clk *clk)
+{
+       int ret = 0;
+       if (clk->usecount++ == 0) {
+               if (clk->parent)
+                       ret = local_clk_use(clk->parent);
+
+               if (ret != 0) {
+                       clk->usecount--;
+                       goto out;
+               }
+
+               ret = local_clk_enable(clk);
+
+               if (ret != 0 && clk->parent) {
+                       local_clk_unuse(clk->parent);
+                       clk->usecount--;
+               }
+       }
+out:
+       return ret;
+}
+
 static int local_set_rate(struct clk *clk, u32 rate)
 {
        int ret = -EINVAL;
@@ -847,28 +906,12 @@ unsigned long clk_get_rate(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_get_rate);
 
-static int local_clk_enable(struct clk *clk)
-{
-       int ret = 0;
-
-       if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate
-           && clk->user_rate)
-               ret = clk->set_rate(clk, clk->user_rate);
-       return ret;
-}
-
-static void local_clk_disable(struct clk *clk)
-{
-       if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate)
-               clk->set_rate(clk, 0);
-}
-
 int clk_enable(struct clk *clk)
 {
        int ret = 0;
 
        clock_lock();
-       ret = local_clk_enable(clk);
+       ret = local_clk_use(clk);
        clock_unlock();
        return ret;
 }
@@ -877,71 +920,12 @@ EXPORT_SYMBOL(clk_enable);
 
 void clk_disable(struct clk *clk)
 {
-       clock_lock();
-       local_clk_disable(clk);
-       clock_unlock();
-}
-
-EXPORT_SYMBOL(clk_disable);
-
-static void local_clk_unuse(struct clk *clk)
-{
-       if (clk->usecount > 0 && !(--clk->usecount)) {
-               local_clk_disable(clk);
-               if (clk->parent)
-                       local_clk_unuse(clk->parent);
-       }
-}
-
-static int local_clk_use(struct clk *clk)
-{
-       int ret = 0;
-       if (clk->usecount++ == 0) {
-               if (clk->parent)
-                       ret = local_clk_use(clk->parent);
-
-               if (ret != 0) {
-                       clk->usecount--;
-                       goto out;
-               }
-
-               ret = local_clk_enable(clk);
-
-               if (ret != 0 && clk->parent) {
-                       local_clk_unuse(clk->parent);
-                       clk->usecount--;
-               }
-       }
-out:
-       return ret;
-}
-
-/* The main purpose of clk_use ans clk_unuse functions
- * is to control switching 13MHz oscillator and PLL1 (13'MHz),
- * so that they are disabled whenever none of PLL2-5 is using them.
- * Although in theory these functions should work with any clock,
- * please use them only on PLL2 - PLL5 to avoid confusion.
- */
-int clk_use(struct clk *clk)
-{
-       int ret = 0;
-
-       clock_lock();
-       ret = local_clk_use(clk);
-       clock_unlock();
-       return ret;
-}
-EXPORT_SYMBOL(clk_use);
-
-void clk_unuse(struct clk *clk)
-{
-
        clock_lock();
        local_clk_unuse(clk);
        clock_unlock();
 }
 
-EXPORT_SYMBOL(clk_unuse);
+EXPORT_SYMBOL(clk_disable);
 
 long clk_round_rate(struct clk *clk, unsigned long rate)
 {
@@ -995,7 +979,7 @@ static int __init clk_init(void)
                        __FUNCTION__, (*clkp)->name, (*clkp)->rate);
        }
 
-       clk_use(&ck_pll4);
+       local_clk_use(&ck_pll4);
 
        /* if ck_13MHz is not used, disable it. */
        if (ck_13MHz.usecount == 0)