clk: renesas: rcar-gen3: Add spinlock (875e8f6b) · Commits · 戴 / test

drivers/clk/renesas/rcar-gen3-cpg.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -30,14 +30,19 @@

		#define CPG_RCKCR_CKSEL BIT(15) /* RCLK Clock Source Select */

		static spinlock_t cpg_lock;

		static void cpg_reg_modify(void __iomem *reg, u32 clear, u32 set)
		{
		unsigned long flags;
		u32 val;

		spin_lock_irqsave(&cpg_lock, flags);
		val = readl(reg);
		val &= ~clear;
		val \|= set;
		writel(val, reg);
		spin_unlock_irqrestore(&cpg_lock, flags);
		};

		struct cpg_simple_notifier {
		@@ -615,5 +620,8 @@ int __init rcar_gen3_cpg_init(const struct rcar_gen3_cpg_pll_config *config,
		if (attr)
		cpg_quirks = (uintptr_t)attr->data;
		pr_debug("%s: mode = 0x%x quirks = 0x%x\n", __func__, mode, cpg_quirks);

		spin_lock_init(&cpg_lock);

		return 0;
		}