1 // SPDX-License-Identifier: GPL-2.0-only
3  * mmp APB clock operation source file
17 /* Common APB clock register bit definitions */
18 #define APBC_APBCLK	(1 << 0)  /* APB Bus Clock Enable */
26 	void __iomem		*base;  member
42 	if (apbc->lock)  in clk_apbc_prepare()
43 		spin_lock_irqsave(apbc->lock, flags);  in clk_apbc_prepare()
45 	data = readl_relaxed(apbc->base);  in clk_apbc_prepare()
46 	if (apbc->flags & APBC_POWER_CTRL)  in clk_apbc_prepare()
49 	writel_relaxed(data, apbc->base);  in clk_apbc_prepare()
51 	if (apbc->lock)  in clk_apbc_prepare()
52 		spin_unlock_irqrestore(apbc->lock, flags);  in clk_apbc_prepare()
54 	udelay(apbc->delay);  in clk_apbc_prepare()
56 	if (apbc->lock)  in clk_apbc_prepare()
57 		spin_lock_irqsave(apbc->lock, flags);  in clk_apbc_prepare()
59 	data = readl_relaxed(apbc->base);  in clk_apbc_prepare()
61 	writel_relaxed(data, apbc->base);  in clk_apbc_prepare()
63 	if (apbc->lock)  in clk_apbc_prepare()
64 		spin_unlock_irqrestore(apbc->lock, flags);  in clk_apbc_prepare()
66 	udelay(apbc->delay);  in clk_apbc_prepare()
68 	if (!(apbc->flags & APBC_NO_BUS_CTRL)) {  in clk_apbc_prepare()
69 		if (apbc->lock)  in clk_apbc_prepare()
70 			spin_lock_irqsave(apbc->lock, flags);  in clk_apbc_prepare()
72 		data = readl_relaxed(apbc->base);  in clk_apbc_prepare()
74 		writel_relaxed(data, apbc->base);  in clk_apbc_prepare()
76 		if (apbc->lock)  in clk_apbc_prepare()
77 			spin_unlock_irqrestore(apbc->lock, flags);  in clk_apbc_prepare()
89 	if (apbc->lock)  in clk_apbc_unprepare()
90 		spin_lock_irqsave(apbc->lock, flags);  in clk_apbc_unprepare()
92 	data = readl_relaxed(apbc->base);  in clk_apbc_unprepare()
93 	if (apbc->flags & APBC_POWER_CTRL)  in clk_apbc_unprepare()
96 	writel_relaxed(data, apbc->base);  in clk_apbc_unprepare()
98 	if (apbc->lock)  in clk_apbc_unprepare()
99 		spin_unlock_irqrestore(apbc->lock, flags);  in clk_apbc_unprepare()
103 	if (apbc->lock)  in clk_apbc_unprepare()
104 		spin_lock_irqsave(apbc->lock, flags);  in clk_apbc_unprepare()
106 	data = readl_relaxed(apbc->base);  in clk_apbc_unprepare()
108 	writel_relaxed(data, apbc->base);  in clk_apbc_unprepare()
110 	if (apbc->lock)  in clk_apbc_unprepare()
111 		spin_unlock_irqrestore(apbc->lock, flags);  in clk_apbc_unprepare()
120 		void __iomem *base, unsigned int delay,  in mmp_clk_register_apbc()  argument
137 	apbc->base = base;  in mmp_clk_register_apbc()
138 	apbc->delay = delay;  in mmp_clk_register_apbc()
139 	apbc->flags = apbc_flags;  in mmp_clk_register_apbc()
140 	apbc->lock = lock;  in mmp_clk_register_apbc()
141 	apbc->hw.init = &init;  in mmp_clk_register_apbc()
143 	clk = clk_register(NULL, &apbc->hw);  in mmp_clk_register_apbc()