clk: zynq: Use clk_readl/clk_writel helper function

Do not use readl/writel directly because the whole
clk subsystem is using clk_readl/clk_writel functions.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

drivers/clk/zynq/clkc.c

@@ -148,7 +148,7 @@ static void __init zynq_clk_register_fclk(enum zynq_clk fclk,
 	clks[fclk] = clk_register_gate(NULL, clk_name,
 			div1_name, CLK_SET_RATE_PARENT, fclk_gate_reg,
 			0, CLK_GATE_SET_TO_DISABLE, fclk_gate_lock);
-	enable_reg = readl(fclk_gate_reg) & 1;
+	enable_reg = clk_readl(fclk_gate_reg) & 1;
 	if (enable && !enable_reg) {
 		if (clk_prepare_enable(clks[fclk]))
 			pr_warn("%s: FCLK%u enable failed\n", __func__,
@@ -277,7 +277,7 @@ static void __init zynq_clk_setup(struct device_node *np)
 			SLCR_IOPLL_CTRL, 4, 1, 0, &iopll_lock);
 
 	/* CPU clocks */
-	tmp = readl(SLCR_621_TRUE) & 1;
+	tmp = clk_readl(SLCR_621_TRUE) & 1;
 	clk = clk_register_mux(NULL, "cpu_mux", cpu_parents, 4,
 			CLK_SET_RATE_NO_REPARENT, SLCR_ARM_CLK_CTRL, 4, 2, 0,
 			&armclk_lock);

drivers/clk/zynq/pll.c

@@ -90,7 +90,7 @@ static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw,
 	 * makes probably sense to redundantly save fbdiv in the struct
 	 * zynq_pll to save the IO access.
 	 */
-	fbdiv = (readl(clk->pll_ctrl) & PLLCTRL_FBDIV_MASK) >>
+	fbdiv = (clk_readl(clk->pll_ctrl) & PLLCTRL_FBDIV_MASK) >>
 			PLLCTRL_FBDIV_SHIFT;
 
 	return parent_rate * fbdiv;
@@ -112,7 +112,7 @@ static int zynq_pll_is_enabled(struct clk_hw *hw)
 
 	spin_lock_irqsave(clk->lock, flags);
 
-	reg = readl(clk->pll_ctrl);
+	reg = clk_readl(clk->pll_ctrl);
 
 	spin_unlock_irqrestore(clk->lock, flags);
 
@@ -138,10 +138,10 @@ static int zynq_pll_enable(struct clk_hw *hw)
 	/* Power up PLL and wait for lock */
 	spin_lock_irqsave(clk->lock, flags);
 
-	reg = readl(clk->pll_ctrl);
+	reg = clk_readl(clk->pll_ctrl);
 	reg &= ~(PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK);
-	writel(reg, clk->pll_ctrl);
-	while (!(readl(clk->pll_status) & (1 << clk->lockbit)))
+	clk_writel(reg, clk->pll_ctrl);
+	while (!(clk_readl(clk->pll_status) & (1 << clk->lockbit)))
 		;
 
 	spin_unlock_irqrestore(clk->lock, flags);
@@ -168,9 +168,9 @@ static void zynq_pll_disable(struct clk_hw *hw)
 	/* shut down PLL */
 	spin_lock_irqsave(clk->lock, flags);
 
-	reg = readl(clk->pll_ctrl);
+	reg = clk_readl(clk->pll_ctrl);
 	reg |= PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK;
-	writel(reg, clk->pll_ctrl);
+	clk_writel(reg, clk->pll_ctrl);
 
 	spin_unlock_irqrestore(clk->lock, flags);
 }
@@ -225,9 +225,9 @@ struct clk *clk_register_zynq_pll(const char *name, const char *parent,
 
 	spin_lock_irqsave(pll->lock, flags);
 
-	reg = readl(pll->pll_ctrl);
+	reg = clk_readl(pll->pll_ctrl);
 	reg &= ~PLLCTRL_BPQUAL_MASK;
-	writel(reg, pll->pll_ctrl);
+	clk_writel(reg, pll->pll_ctrl);
 
 	spin_unlock_irqrestore(pll->lock, flags);