1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2012 ST-Ericsson SA
9 #include <linux/clk-provider.h>
10 #include <linux/mfd/dbx500-prcmu.h>
14 #include "clk.h"
28 	u8 source;  member
36 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_prepare()  local
38 	return prcmu_request_clock(clk->cg_sel, true);  in clk_prcmu_prepare()
43 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_unprepare()  local
44 	if (prcmu_request_clock(clk->cg_sel, false))  in clk_prcmu_unprepare()
52 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_recalc_rate()  local
53 	return prcmu_clock_rate(clk->cg_sel);  in clk_prcmu_recalc_rate()
59 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_round_rate()  local
60 	return prcmu_round_clock_rate(clk->cg_sel, rate);  in clk_prcmu_round_rate()
66 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_set_rate()  local
67 	return prcmu_set_clock_rate(clk->cg_sel, rate);  in clk_prcmu_set_rate()
73 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_opp_prepare()  local
75 	if (!clk->opp_requested) {  in clk_prcmu_opp_prepare()
84 		clk->opp_requested = 1;  in clk_prcmu_opp_prepare()
87 	err = prcmu_request_clock(clk->cg_sel, true);  in clk_prcmu_opp_prepare()
91 		clk->opp_requested = 0;  in clk_prcmu_opp_prepare()
100 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_opp_unprepare()  local
102 	if (prcmu_request_clock(clk->cg_sel, false)) {  in clk_prcmu_opp_unprepare()
108 	if (clk->opp_requested) {  in clk_prcmu_opp_unprepare()
111 		clk->opp_requested = 0;  in clk_prcmu_opp_unprepare()
118 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_opp_volt_prepare()  local
120 	if (!clk->opp_requested) {  in clk_prcmu_opp_volt_prepare()
127 		clk->opp_requested = 1;  in clk_prcmu_opp_volt_prepare()
130 	err = prcmu_request_clock(clk->cg_sel, true);  in clk_prcmu_opp_volt_prepare()
133 		clk->opp_requested = 0;  in clk_prcmu_opp_volt_prepare()
142 	struct clk_prcmu *clk = to_clk_prcmu(hw);  in clk_prcmu_opp_volt_unprepare()  local
144 	if (prcmu_request_clock(clk->cg_sel, false)) {  in clk_prcmu_opp_volt_unprepare()
150 	if (clk->opp_requested) {  in clk_prcmu_opp_volt_unprepare()
152 		clk->opp_requested = 0;  in clk_prcmu_opp_volt_unprepare()
201 	struct clk_prcmu *clk;  in clk_reg_prcmu()  local
207 		return ERR_PTR(-EINVAL);  in clk_reg_prcmu()
210 	clk = kzalloc(sizeof(*clk), GFP_KERNEL);  in clk_reg_prcmu()
211 	if (!clk)  in clk_reg_prcmu()
212 		return ERR_PTR(-ENOMEM);  in clk_reg_prcmu()
214 	clk->cg_sel = cg_sel;  in clk_reg_prcmu()
215 	clk->opp_requested = 0;  in clk_reg_prcmu()
225 	clk->hw.init = &clk_prcmu_init;  in clk_reg_prcmu()
227 	ret = clk_hw_register(NULL, &clk->hw);  in clk_reg_prcmu()
231 	return &clk->hw;  in clk_reg_prcmu()
234 	kfree(clk);  in clk_reg_prcmu()
235 	pr_err("clk_prcmu: %s failed to register clk\n", __func__);  in clk_reg_prcmu()
236 	return ERR_PTR(-ENOMEM);  in clk_reg_prcmu()
300 	struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw);  in clk_prcmu_clkout_prepare()  local
302 	return prcmu_config_clkout(clk->clkout_id, clk->source, clk->divider);  in clk_prcmu_clkout_prepare()
307 	struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw);  in clk_prcmu_clkout_unprepare()  local
311 	ret = prcmu_config_clkout(clk->clkout_id, clk->source, 0);  in clk_prcmu_clkout_unprepare()
320 	struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw);  in clk_prcmu_clkout_recalc_rate()  local
322 	return (parent_rate / clk->divider);  in clk_prcmu_clkout_recalc_rate()
327 	struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw);  in clk_prcmu_clkout_get_parent()  local
329 	return clk->source;  in clk_prcmu_clkout_get_parent()
334 	struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw);  in clk_prcmu_clkout_set_parent()  local
336 	clk->source = index;  in clk_prcmu_clkout_set_parent()
355 				    u8 source, u8 divider)  in clk_reg_prcmu_clkout()  argument
358 	struct clk_prcmu_clkout *clk;  in clk_reg_prcmu_clkout()  local
365 		return ERR_PTR(-EINVAL);  in clk_reg_prcmu_clkout()
374 		return ERR_PTR(-EINVAL);  in clk_reg_prcmu_clkout()
377 	clk = kzalloc(sizeof(*clk), GFP_KERNEL);  in clk_reg_prcmu_clkout()
378 	if (!clk)  in clk_reg_prcmu_clkout()
379 		return ERR_PTR(-ENOMEM);  in clk_reg_prcmu_clkout()
381 	clk->clkout_id = clkout_id;  in clk_reg_prcmu_clkout()
382 	clk->source = source;  in clk_reg_prcmu_clkout()
383 	clk->divider = divider;  in clk_reg_prcmu_clkout()
390 	clk->hw.init = &clk_prcmu_clkout_init;  in clk_reg_prcmu_clkout()
392 	ret = clk_hw_register(NULL, &clk->hw);  in clk_reg_prcmu_clkout()
396 	return &clk->hw;  in clk_reg_prcmu_clkout()
398 	kfree(clk);  in clk_reg_prcmu_clkout()
399 	pr_err("clk_prcmu_clkout: %s failed to register clk\n", __func__);  in clk_reg_prcmu_clkout()
400 	return ERR_PTR(-ENOMEM);  in clk_reg_prcmu_clkout()