1 // SPDX-License-Identifier: GPL-2.0
3  * R-Car Gen3 Clock Pulse Generator Library
5  * Copyright (C) 2015-2018 Glider bvba
8  * Based on clk-rcar-gen3.c
14 #include <linux/clk-provider.h>
23 #include "rcar-cpg-lib.h"
48 		csn->saved = readl(csn->reg);  in cpg_simple_notifier_call()
52 		writel(csn->saved, csn->reg);  in cpg_simple_notifier_call()
61 	csn->nb.notifier_call = cpg_simple_notifier_call;  in cpg_simple_notifier_register()
62 	raw_notifier_chain_register(notifiers, &csn->nb);  in cpg_simple_notifier_register()
70 #define STPnHCK	BIT(9 - SDnSRCFC_SHIFT)
98 	if (!csn)  in cpg_sdh_clk_register()
99 		return ERR_PTR(-ENOMEM);  in cpg_sdh_clk_register()
101 	csn->reg = sdnckcr;  in cpg_sdh_clk_register()
106 	if (IS_ERR(clk)) {  in cpg_sdh_clk_register()
130 	 * One notifier covers both RPC and RPCD2 clocks as they are both
144 	struct rpc_clock *rpc;  in cpg_rpc_clk_register()  local
147 	rpc = kzalloc(sizeof(*rpc), GFP_KERNEL);  in cpg_rpc_clk_register()
148 	if (!rpc)  in cpg_rpc_clk_register()
149 		return ERR_PTR(-ENOMEM);  in cpg_rpc_clk_register()
151 	rpc->div.reg = rpcckcr;  in cpg_rpc_clk_register()
152 	rpc->div.width = 3;  in cpg_rpc_clk_register()
153 	rpc->div.table = cpg_rpc_div_table;  in cpg_rpc_clk_register()
154 	rpc->div.lock = &cpg_lock;  in cpg_rpc_clk_register()
156 	rpc->gate.reg = rpcckcr;  in cpg_rpc_clk_register()
157 	rpc->gate.bit_idx = 8;  in cpg_rpc_clk_register()
158 	rpc->gate.flags = CLK_GATE_SET_TO_DISABLE;  in cpg_rpc_clk_register()
159 	rpc->gate.lock = &cpg_lock;  in cpg_rpc_clk_register()
161 	rpc->csn.reg = rpcckcr;  in cpg_rpc_clk_register()
164 				     &rpc->div.hw,  &clk_divider_ops,  in cpg_rpc_clk_register()
165 				     &rpc->gate.hw, &clk_gate_ops,  in cpg_rpc_clk_register()
167 	if (IS_ERR(clk)) {  in cpg_rpc_clk_register()
168 		kfree(rpc);  in cpg_rpc_clk_register()
172 	cpg_simple_notifier_register(notifiers, &rpc->csn);  in cpg_rpc_clk_register()
189 	if (!rpcd2)  in cpg_rpcd2_clk_register()
190 		return ERR_PTR(-ENOMEM);  in cpg_rpcd2_clk_register()
192 	rpcd2->fixed.mult = 1;  in cpg_rpcd2_clk_register()
193 	rpcd2->fixed.div = 2;  in cpg_rpcd2_clk_register()
195 	rpcd2->gate.reg = rpcckcr;  in cpg_rpcd2_clk_register()
196 	rpcd2->gate.bit_idx = 9;  in cpg_rpcd2_clk_register()
197 	rpcd2->gate.flags = CLK_GATE_SET_TO_DISABLE;  in cpg_rpcd2_clk_register()
198 	rpcd2->gate.lock = &cpg_lock;  in cpg_rpcd2_clk_register()
201 				     &rpcd2->fixed.hw, &clk_fixed_factor_ops,  in cpg_rpcd2_clk_register()
202 				     &rpcd2->gate.hw, &clk_gate_ops,  in cpg_rpcd2_clk_register()
204 	if (IS_ERR(clk))  in cpg_rpcd2_clk_register()