1 // SPDX-License-Identifier: GPL-2.0-or-later
6 #include <linux/clk-provider.h>
10 #include <linux/mfd/syscon.h>
43 	struct clk_system *sys = to_clk_system(hw);  in clk_system_prepare()  local
45 	regmap_write(sys->regmap, AT91_PMC_SCER, 1 << sys->id);  in clk_system_prepare()
47 	if (!is_pck(sys->id))  in clk_system_prepare()
50 	while (!clk_system_ready(sys->regmap, sys->id))  in clk_system_prepare()
58 	struct clk_system *sys = to_clk_system(hw);  in clk_system_unprepare()  local
60 	regmap_write(sys->regmap, AT91_PMC_SCDR, 1 << sys->id);  in clk_system_unprepare()
65 	struct clk_system *sys = to_clk_system(hw);  in clk_system_is_prepared()  local
68 	regmap_read(sys->regmap, AT91_PMC_SCSR, &status);  in clk_system_is_prepared()
70 	if (!(status & (1 << sys->id)))  in clk_system_is_prepared()
73 	if (!is_pck(sys->id))  in clk_system_is_prepared()
76 	regmap_read(sys->regmap, AT91_PMC_SR, &status);  in clk_system_is_prepared()
78 	return !!(status & (1 << sys->id));  in clk_system_is_prepared()
83 	struct clk_system *sys = to_clk_system(hw);  in clk_system_save_context()  local
85 	sys->pms.status = clk_system_is_prepared(hw);  in clk_system_save_context()
92 	struct clk_system *sys = to_clk_system(hw);  in clk_system_restore_context()  local
94 	if (sys->pms.status)  in clk_system_restore_context()
95 		clk_system_prepare(&sys->hw);  in clk_system_restore_context()
111 	struct clk_system *sys;  in at91_clk_register_system()  local
117 		return ERR_PTR(-EINVAL);  in at91_clk_register_system()
119 	sys = kzalloc(sizeof(*sys), GFP_KERNEL);  in at91_clk_register_system()
120 	if (!sys)  in at91_clk_register_system()
121 		return ERR_PTR(-ENOMEM);  in at91_clk_register_system()
132 	sys->id = id;  in at91_clk_register_system()
133 	sys->hw.init = &init;  in at91_clk_register_system()
134 	sys->regmap = regmap;  in at91_clk_register_system()
136 	hw = &sys->hw;  in at91_clk_register_system()
137 	ret = clk_hw_register(NULL, &sys->hw);  in at91_clk_register_system()
139 		kfree(sys);  in at91_clk_register_system()