1 // SPDX-License-Identifier: GPL-2.0+
8 #include <linux/clk-provider.h>
14 #include "clk-scu.h"
23  * struct clk_lpcg_scu - Description of LPCG clock
26  * @reg: register of this LPCG clock
34 	void __iomem *reg;  member
48 	u32 reg, val;  in clk_lpcg_scu_enable()  local
52 	reg = readl_relaxed(clk->reg);  in clk_lpcg_scu_enable()
53 	reg &= ~(CLK_GATE_SCU_LPCG_MASK << clk->bit_idx);  in clk_lpcg_scu_enable()
56 	if (clk->hw_gate)  in clk_lpcg_scu_enable()
59 	reg |= val << clk->bit_idx;  in clk_lpcg_scu_enable()
60 	writel(reg, clk->reg);  in clk_lpcg_scu_enable()
71 	u32 reg;  in clk_lpcg_scu_disable()  local
75 	reg = readl_relaxed(clk->reg);  in clk_lpcg_scu_disable()
76 	reg &= ~(CLK_GATE_SCU_LPCG_MASK << clk->bit_idx);  in clk_lpcg_scu_disable()
77 	writel(reg, clk->reg);  in clk_lpcg_scu_disable()
89 				  void __iomem *reg, u8 bit_idx, bool hw_gate)  in __imx_clk_lpcg_scu()  argument
92 	struct clk_init_data init;  in __imx_clk_lpcg_scu()  local
98 		return ERR_PTR(-ENOMEM);  in __imx_clk_lpcg_scu()
100 	clk->reg = reg;  in __imx_clk_lpcg_scu()
101 	clk->bit_idx = bit_idx;  in __imx_clk_lpcg_scu()
102 	clk->hw_gate = hw_gate;  in __imx_clk_lpcg_scu()
104 	init.name = name;  in __imx_clk_lpcg_scu()
105 	init.ops = &clk_lpcg_scu_ops;  in __imx_clk_lpcg_scu()
106 	init.flags = CLK_SET_RATE_PARENT | flags;  in __imx_clk_lpcg_scu()
107 	init.parent_names = parent_name ? &parent_name : NULL;  in __imx_clk_lpcg_scu()
108 	init.num_parents = parent_name ? 1 : 0;  in __imx_clk_lpcg_scu()
110 	clk->hw.init = &init;  in __imx_clk_lpcg_scu()
112 	hw = &clk->hw;  in __imx_clk_lpcg_scu()
130 	clk_hw_unregister(&clk->hw);  in imx_clk_lpcg_scu_unregister()
138 	clk->state = readl_relaxed(clk->reg);  in imx_clk_lpcg_scu_suspend()
139 	dev_dbg(dev, "save lpcg state 0x%x\n", clk->state);  in imx_clk_lpcg_scu_suspend()
153 	writel(clk->state, clk->reg);  in imx_clk_lpcg_scu_resume()
154 	writel(clk->state, clk->reg);  in imx_clk_lpcg_scu_resume()
155 	dev_dbg(dev, "restore lpcg state 0x%x\n", clk->state);  in imx_clk_lpcg_scu_resume()