ARM: OMAP2+: clock: use driver API instead of direct memory read/write

Clock nodes shall use the services provided by underlying drivers to access
the hardware registers instead of direct memory read/write. Thus, change
all the code to use the new omap2_clk_readl / omap2_clk_writel APIs for this.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

1 files changed, 20 insertions, 17 deletions

diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index 3a0296c..3185ced 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -50,10 +50,10 @@ static void _omap3_dpll_write_clken(struct clk_hw_omap *clk, u8 clken_bits)
 
 	dd = clk->dpll_data;
 
-	v = __raw_readl(dd->control_reg);
+	v = omap2_clk_readl(clk, dd->control_reg);
 	v &= ~dd->enable_mask;
 	v |= clken_bits << __ffs(dd->enable_mask);
-	__raw_writel(v, dd->control_reg);
+	omap2_clk_writel(v, clk, dd->control_reg);
 }
 
 /* _omap3_wait_dpll_status: wait for a DPLL to enter a specific state */
@@ -69,8 +69,8 @@ static int _omap3_wait_dpll_status(struct clk_hw_omap *clk, u8 state)
 
 	state <<= __ffs(dd->idlest_mask);
 
-	while (((__raw_readl(dd->idlest_reg) & dd->idlest_mask) != state) &&
-	       i < MAX_DPLL_WAIT_TRIES) {
+	while (((omap2_clk_readl(clk, dd->idlest_reg) & dd->idlest_mask)
+		!= state) && i < MAX_DPLL_WAIT_TRIES) {
 		i++;
 		udelay(1);
 	}
@@ -147,7 +147,7 @@ static int _omap3_noncore_dpll_lock(struct clk_hw_omap *clk)
 	state <<= __ffs(dd->idlest_mask);
 
 	/* Check if already locked */
-	if ((__raw_readl(dd->idlest_reg) & dd->idlest_mask) == state)
+	if ((omap2_clk_readl(clk, dd->idlest_reg) & dd->idlest_mask) == state)
 		goto done;
 
 	ai = omap3_dpll_autoidle_read(clk);
@@ -311,14 +311,14 @@ static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 freqsel)
 	 * only since freqsel field is no longer present on other devices.
 	 */
 	if (cpu_is_omap343x()) {
-		v = __raw_readl(dd->control_reg);
+		v = omap2_clk_readl(clk, dd->control_reg);
 		v &= ~dd->freqsel_mask;
 		v |= freqsel << __ffs(dd->freqsel_mask);
-		__raw_writel(v, dd->control_reg);
+		omap2_clk_writel(v, clk, dd->control_reg);
 	}
 
 	/* Set DPLL multiplier, divider */
-	v = __raw_readl(dd->mult_div1_reg);
+	v = omap2_clk_readl(clk, dd->mult_div1_reg);
 	v &= ~(dd->mult_mask | dd->div1_mask);
 	v |= dd->last_rounded_m << __ffs(dd->mult_mask);
 	v |= (dd->last_rounded_n - 1) << __ffs(dd->div1_mask);
@@ -336,11 +336,11 @@ static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 freqsel)
 		v |= sd_div << __ffs(dd->sddiv_mask);
 	}
 
-	__raw_writel(v, dd->mult_div1_reg);
+	omap2_clk_writel(v, clk, dd->mult_div1_reg);
 
 	/* Set 4X multiplier and low-power mode */
 	if (dd->m4xen_mask || dd->lpmode_mask) {
-		v = __raw_readl(dd->control_reg);
+		v = omap2_clk_readl(clk, dd->control_reg);
 
 		if (dd->m4xen_mask) {
 			if (dd->last_rounded_m4xen)
@@ -356,7 +356,7 @@ static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 freqsel)
 				v &= ~dd->lpmode_mask;
 		}
 
-		__raw_writel(v, dd->control_reg);
+		omap2_clk_writel(v, clk, dd->control_reg);
 	}
 
 	/* We let the clock framework set the other output dividers later */
@@ -554,7 +554,7 @@ u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk)
 	if (!dd->autoidle_reg)
 		return -EINVAL;
 
-	v = __raw_readl(dd->autoidle_reg);
+	v = omap2_clk_readl(clk, dd->autoidle_reg);
 	v &= dd->autoidle_mask;
 	v >>= __ffs(dd->autoidle_mask);
 
@@ -588,10 +588,10 @@ void omap3_dpll_allow_idle(struct clk_hw_omap *clk)
 	 * by writing 0x5 instead of 0x1.  Add some mechanism to
 	 * optionally enter this mode.
 	 */
-	v = __raw_readl(dd->autoidle_reg);
+	v = omap2_clk_readl(clk, dd->autoidle_reg);
 	v &= ~dd->autoidle_mask;
 	v |= DPLL_AUTOIDLE_LOW_POWER_STOP << __ffs(dd->autoidle_mask);
-	__raw_writel(v, dd->autoidle_reg);
+	omap2_clk_writel(v, clk, dd->autoidle_reg);
 
 }
 
@@ -614,10 +614,10 @@ void omap3_dpll_deny_idle(struct clk_hw_omap *clk)
 	if (!dd->autoidle_reg)
 		return;
 
-	v = __raw_readl(dd->autoidle_reg);
+	v = omap2_clk_readl(clk, dd->autoidle_reg);
 	v &= ~dd->autoidle_mask;
 	v |= DPLL_AUTOIDLE_DISABLE << __ffs(dd->autoidle_mask);
-	__raw_writel(v, dd->autoidle_reg);
+	omap2_clk_writel(v, clk, dd->autoidle_reg);
 
 }
 
@@ -639,6 +639,9 @@ unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
 	struct clk_hw_omap *pclk = NULL;
 	struct clk *parent;
 
+	if (!parent_rate)
+		return 0;
+
 	/* Walk up the parents of clk, looking for a DPLL */
 	do {
 		do {
@@ -660,7 +663,7 @@ unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
 
 	WARN_ON(!dd->enable_mask);
 
-	v = __raw_readl(dd->control_reg) & dd->enable_mask;
+	v = omap2_clk_readl(pclk, dd->control_reg) & dd->enable_mask;
 	v >>= __ffs(dd->enable_mask);
 	if ((v != OMAP3XXX_EN_DPLL_LOCKED) || (dd->flags & DPLL_J_TYPE))
 		rate = parent_rate;