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clk: renesas: rcar-gen3: Always use readl()/writel() 

The R-Car Gen3 CPG/MSSR driver (again) uses a mix of
clk_readl()/clk_writel() and readl()/writel() to access the clock
registers. Settle on the generic readl()/writel().

Cfr. commit 30ad3cf00e ("clk: renesas: rcar-gen3-cpg: Always use
readl()/writel()").

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven 2018-03-15 10:44:37 +01:00
parent f046d6a6bf
commit 2b935d524d
1 changed files with 7 additions and 7 deletions
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14
drivers/clk/renesas/rcar-gen3-cpg.c
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@ -93,7 +93,7 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
unsigned int mult;
u32 val;
val = clk_readl(zclk->reg) & zclk->mask;
val = readl(zclk->reg) & zclk->mask;
mult = 32 - (val >> __ffs(zclk->mask));
/* Factor of 2 is for fixed divider */
@ -125,20 +125,20 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
mult = DIV_ROUND_CLOSEST_ULL(rate * 32ULL * 2, parent_rate);
mult = clamp(mult, 1U, 32U);
if (clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
return -EBUSY;
val = clk_readl(zclk->reg) & ~zclk->mask;
val = readl(zclk->reg) & ~zclk->mask;
val |= ((32 - mult) << __ffs(zclk->mask)) & zclk->mask;
clk_writel(val, zclk->reg);
writel(val, zclk->reg);
/*
* Set KICK bit in FRQCRB to update hardware setting and wait for
* clock change completion.
*/
kick = clk_readl(zclk->kick_reg);
kick = readl(zclk->kick_reg);
kick |= CPG_FRQCRB_KICK;
clk_writel(kick, zclk->kick_reg);
writel(kick, zclk->kick_reg);
/*
* Note: There is no HW information about the worst case latency.
@ -150,7 +150,7 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
* "super" safe value.
*/
for (i = 1000; i; i--) {
if (!(clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
if (!(readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
return 0;
cpu_relax();