1 // SPDX-License-Identifier: GPL-2.0
6  * Copyright (c) 2013-2014 Texas Instruments, Inc.
13 #include <linux/clk-provider.h>
30 	int delay;  member
57 	ret = palmas_update_bits(cinfo->palmas, PALMAS_RESOURCE_BASE,  in palmas_clks_prepare()
58 				 cinfo->clk_desc->control_reg,  in palmas_clks_prepare()
59 				 cinfo->clk_desc->enable_mask,  in palmas_clks_prepare()
60 				 cinfo->clk_desc->enable_mask);  in palmas_clks_prepare()
62 		dev_err(cinfo->dev, "Reg 0x%02x update failed, %d\n",  in palmas_clks_prepare()
63 			cinfo->clk_desc->control_reg, ret);  in palmas_clks_prepare()
64 	else if (cinfo->clk_desc->delay)  in palmas_clks_prepare()
65 		udelay(cinfo->clk_desc->delay);  in palmas_clks_prepare()
79 	if (cinfo->ext_control_pin)  in palmas_clks_unprepare()
82 	ret = palmas_update_bits(cinfo->palmas, PALMAS_RESOURCE_BASE,  in palmas_clks_unprepare()
83 				 cinfo->clk_desc->control_reg,  in palmas_clks_unprepare()
84 				 cinfo->clk_desc->enable_mask, 0);  in palmas_clks_unprepare()
86 		dev_err(cinfo->dev, "Reg 0x%02x update failed, %d\n",  in palmas_clks_unprepare()
87 			cinfo->clk_desc->control_reg, ret);  in palmas_clks_unprepare()
96 	if (cinfo->ext_control_pin)  in palmas_clks_is_prepared()
99 	ret = palmas_read(cinfo->palmas, PALMAS_RESOURCE_BASE,  in palmas_clks_is_prepared()
100 			  cinfo->clk_desc->control_reg, &val);  in palmas_clks_is_prepared()
102 		dev_err(cinfo->dev, "Reg 0x%02x read failed, %d\n",  in palmas_clks_is_prepared()
103 			cinfo->clk_desc->control_reg, ret);  in palmas_clks_is_prepared()
106 	return !!(val & cinfo->clk_desc->enable_mask);  in palmas_clks_is_prepared()
117 	struct clk_init_data init;  member
122 	.init = {
133 		.delay = 200,
138 	.init = {
149 		.delay = 200,
155 		.compatible = "ti,palmas-clk32kg",
159 		.compatible = "ti,palmas-clk32kgaudio",
169 	struct device_node *node = pdev->dev.of_node;  in palmas_clks_get_clk_data()
173 	ret = of_property_read_u32(node, "ti,external-sleep-control",  in palmas_clks_get_clk_data()
189 		dev_warn(&pdev->dev, "%pOFn: Invalid ext control option: %u\n",  in palmas_clks_get_clk_data()
194 	cinfo->ext_control_pin = prop;  in palmas_clks_get_clk_data()
201 	ret = palmas_update_bits(cinfo->palmas, PALMAS_RESOURCE_BASE,  in palmas_clks_init_configure()
202 				 cinfo->clk_desc->control_reg,  in palmas_clks_init_configure()
203 				 cinfo->clk_desc->sleep_mask, 0);  in palmas_clks_init_configure()
205 		dev_err(cinfo->dev, "Reg 0x%02x update failed, %d\n",  in palmas_clks_init_configure()
206 			cinfo->clk_desc->control_reg, ret);  in palmas_clks_init_configure()
210 	if (cinfo->ext_control_pin) {  in palmas_clks_init_configure()
211 		ret = clk_prepare(cinfo->hw.clk);  in palmas_clks_init_configure()
213 			dev_err(cinfo->dev, "Clock prep failed, %d\n", ret);  in palmas_clks_init_configure()
217 		ret = palmas_ext_control_req_config(cinfo->palmas,  in palmas_clks_init_configure()
218 					cinfo->clk_desc->sleep_reqstr_id,  in palmas_clks_init_configure()
219 					cinfo->ext_control_pin, true);  in palmas_clks_init_configure()
221 			dev_err(cinfo->dev, "Ext config for %s failed, %d\n",  in palmas_clks_init_configure()
222 				cinfo->clk_desc->clk_name, ret);  in palmas_clks_init_configure()
223 			clk_unprepare(cinfo->hw.clk);  in palmas_clks_init_configure()
232 	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);  in palmas_clks_probe()
233 	struct device_node *node = pdev->dev.of_node;  in palmas_clks_probe()
238 	match_data = of_device_get_match_data(&pdev->dev);  in palmas_clks_probe()
242 	cinfo = devm_kzalloc(&pdev->dev, sizeof(*cinfo), GFP_KERNEL);  in palmas_clks_probe()
244 		return -ENOMEM;  in palmas_clks_probe()
249 	cinfo->dev = &pdev->dev;  in palmas_clks_probe()
250 	cinfo->palmas = palmas;  in palmas_clks_probe()
252 	cinfo->clk_desc = &match_data->desc;  in palmas_clks_probe()
253 	cinfo->hw.init = &match_data->init;  in palmas_clks_probe()
254 	ret = devm_clk_hw_register(&pdev->dev, &cinfo->hw);  in palmas_clks_probe()
256 		dev_err(&pdev->dev, "Fail to register clock %s, %d\n",  in palmas_clks_probe()
257 			match_data->desc.clk_name, ret);  in palmas_clks_probe()
263 		dev_err(&pdev->dev, "Clock config failed, %d\n", ret);  in palmas_clks_probe()
267 	ret = of_clk_add_hw_provider(node, of_clk_hw_simple_get, &cinfo->hw);  in palmas_clks_probe()
269 		dev_err(&pdev->dev, "Fail to add clock driver, %d\n", ret);  in palmas_clks_probe()
275 	of_clk_del_provider(pdev->dev.of_node);  in palmas_clks_remove()
280 		.name = "palmas-clk",
290 MODULE_ALIAS("platform:palmas-clk");