1 // SPDX-License-Identifier: GPL-2.0-or-later
4  * e-book readers designed by the original design manufacturer Netronix, Inc.
5  * It contains RTC, battery monitoring, system power management, and PWM
9  * power-off/reset.
43 			.addr = poweroff_restart_client->addr,  in ntxec_poweroff()
52 	res = i2c_transfer(poweroff_restart_client->adapter, msgs, ARRAY_SIZE(msgs));  in ntxec_poweroff()
54 		dev_warn(&poweroff_restart_client->dev,  in ntxec_poweroff()
73 	 * does send the full two-byte value, but doesn't check the result).  in ntxec_restart()
77 			.addr = poweroff_restart_client->addr,  in ntxec_restart()
79 			.len = sizeof(buf) - 1,  in ntxec_restart()
86 	res = i2c_transfer(poweroff_restart_client->adapter, msgs, ARRAY_SIZE(msgs));  in ntxec_restart()
88 		dev_warn(&poweroff_restart_client->dev,  in ntxec_restart()
140 	{ .name = "ntxec-rtc" },
141 	{ .name = "ntxec-pwm" },
145 	{ .name = "ntxec-pwm" },
150 	struct ntxec *ec;  in ntxec_probe()  local
156 	ec = devm_kmalloc(&client->dev, sizeof(*ec), GFP_KERNEL);  in ntxec_probe()
157 	if (!ec)  in ntxec_probe()
158 		return -ENOMEM;  in ntxec_probe()
160 	ec->dev = &client->dev;  in ntxec_probe()
162 	ec->regmap = devm_regmap_init_i2c(client, &regmap_config);  in ntxec_probe()
163 	if (IS_ERR(ec->regmap)) {  in ntxec_probe()
164 		dev_err(ec->dev, "Failed to set up regmap for device\n");  in ntxec_probe()
165 		return PTR_ERR(ec->regmap);  in ntxec_probe()
169 	res = regmap_read(ec->regmap, NTXEC_REG_VERSION, &version);  in ntxec_probe()
171 		dev_err(ec->dev, "Failed to read firmware version number\n");  in ntxec_probe()
186 		ec->regmap = devm_regmap_init(ec->dev, NULL,  in ntxec_probe()
187 					      ec->regmap,  in ntxec_probe()
189 		if (IS_ERR(ec->regmap))  in ntxec_probe()
190 			return PTR_ERR(ec->regmap);  in ntxec_probe()
193 		dev_err(ec->dev,  in ntxec_probe()
196 		return -ENODEV;  in ntxec_probe()
199 	dev_info(ec->dev,  in ntxec_probe()
202 	if (of_device_is_system_power_controller(ec->dev->of_node)) {  in ntxec_probe()
207 		res = regmap_write(ec->regmap, NTXEC_REG_POWERKEEP,  in ntxec_probe()
217 			dev_err(ec->dev, "poweroff_restart_client already assigned\n");  in ntxec_probe()
223 			dev_err(ec->dev, "pm_power_off already assigned\n");  in ntxec_probe()
229 			dev_err(ec->dev,  in ntxec_probe()
233 	i2c_set_clientdata(client, ec);  in ntxec_probe()
235 	res = devm_mfd_add_devices(ec->dev, PLATFORM_DEVID_NONE,  in ntxec_probe()
238 		dev_err(ec->dev, "Failed to add subdevices: %d\n", res);  in ntxec_probe()
269 MODULE_DESCRIPTION("Core driver for Netronix EC");