1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
33 /* Regulator control registers for shutdown/reset */
53 /* Buck TEST2 registers for shutdown/reset */
72  * struct pmic8xxx_pwrkey - pmic8xxx pwrkey information
108 		enable_irq_wake(pwrkey->key_press_irq);  in pmic8xxx_pwrkey_suspend()
118 		disable_irq_wake(pwrkey->key_press_irq);  in pmic8xxx_pwrkey_resume()
131 	bool reset = system_state == SYSTEM_RESTART;  in pmic8xxx_pwrkey_shutdown()  local
133 	if (pwrkey->shutdown_fn) {  in pmic8xxx_pwrkey_shutdown()
134 		error = pwrkey->shutdown_fn(pwrkey, reset);  in pmic8xxx_pwrkey_shutdown()
140 	 * Select action to perform (reset or shutdown) when PS_HOLD goes low.  in pmic8xxx_pwrkey_shutdown()
147 	if (!reset)  in pmic8xxx_pwrkey_shutdown()
150 	regmap_update_bits(pwrkey->regmap, PON_CNTL_1, mask, val);  in pmic8xxx_pwrkey_shutdown()
201 			return -EPERM;  in pm8058_disable_smps_locally_set_pull_down()
280 static int pm8058_pwrkey_shutdown(struct pmic8xxx_pwrkey *pwrkey, bool reset)  in pm8058_pwrkey_shutdown()  argument
283 	struct regmap *regmap = pwrkey->regmap;  in pm8058_pwrkey_shutdown()
287 	if (!reset) {  in pm8058_pwrkey_shutdown()
305 	 * Fix-up: Set regulator LDO22 to 1.225 V in high power mode. Leave its  in pm8058_pwrkey_shutdown()
306 	 * pull-down state intact. This ensures a safe shutdown.  in pm8058_pwrkey_shutdown()
315 	if (reset)  in pm8058_pwrkey_shutdown()
320 static int pm8921_pwrkey_shutdown(struct pmic8xxx_pwrkey *pwrkey, bool reset)  in pm8921_pwrkey_shutdown()  argument
322 	struct regmap *regmap = pwrkey->regmap;  in pm8921_pwrkey_shutdown()
327 	if (reset)  in pm8921_pwrkey_shutdown()
338 	unsigned int delay;  in pmic8xxx_pwrkey_probe()  local
345 	if (of_property_read_u32(pdev->dev.of_node, "debounce", &kpd_delay))  in pmic8xxx_pwrkey_probe()
348 	/* Valid range of pwr key trigger delay is 1/64 sec to 2 seconds. */  in pmic8xxx_pwrkey_probe()
350 		dev_err(&pdev->dev, "invalid power key trigger delay\n");  in pmic8xxx_pwrkey_probe()
351 		return -EINVAL;  in pmic8xxx_pwrkey_probe()
354 	pull_up = of_property_read_bool(pdev->dev.of_node, "pull-up");  in pmic8xxx_pwrkey_probe()
356 	regmap = dev_get_regmap(pdev->dev.parent, NULL);  in pmic8xxx_pwrkey_probe()
358 		dev_err(&pdev->dev, "failed to locate regmap for the device\n");  in pmic8xxx_pwrkey_probe()
359 		return -ENODEV;  in pmic8xxx_pwrkey_probe()
362 	pwrkey = devm_kzalloc(&pdev->dev, sizeof(*pwrkey), GFP_KERNEL);  in pmic8xxx_pwrkey_probe()
364 		return -ENOMEM;  in pmic8xxx_pwrkey_probe()
366 	pwrkey->shutdown_fn = of_device_get_match_data(&pdev->dev);  in pmic8xxx_pwrkey_probe()
367 	pwrkey->regmap = regmap;  in pmic8xxx_pwrkey_probe()
368 	pwrkey->key_press_irq = key_press_irq;  in pmic8xxx_pwrkey_probe()
370 	pwr = devm_input_allocate_device(&pdev->dev);  in pmic8xxx_pwrkey_probe()
372 		dev_dbg(&pdev->dev, "Can't allocate power button\n");  in pmic8xxx_pwrkey_probe()
373 		return -ENOMEM;  in pmic8xxx_pwrkey_probe()
378 	pwr->name = "pmic8xxx_pwrkey";  in pmic8xxx_pwrkey_probe()
379 	pwr->phys = "pmic8xxx_pwrkey/input0";  in pmic8xxx_pwrkey_probe()
381 	delay = (kpd_delay << 6) / USEC_PER_SEC;  in pmic8xxx_pwrkey_probe()
382 	delay = ilog2(delay);  in pmic8xxx_pwrkey_probe()
386 		dev_err(&pdev->dev, "failed reading PON_CNTL_1 err=%d\n", err);  in pmic8xxx_pwrkey_probe()
391 	pon_cntl |= (delay & PON_CNTL_TRIG_DELAY_MASK);  in pmic8xxx_pwrkey_probe()
399 		dev_err(&pdev->dev, "failed writing PON_CNTL_1 err=%d\n", err);  in pmic8xxx_pwrkey_probe()
403 	err = devm_request_irq(&pdev->dev, key_press_irq, pwrkey_press_irq,  in pmic8xxx_pwrkey_probe()
407 		dev_err(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",  in pmic8xxx_pwrkey_probe()
412 	err = devm_request_irq(&pdev->dev, key_release_irq, pwrkey_release_irq,  in pmic8xxx_pwrkey_probe()
416 		dev_err(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",  in pmic8xxx_pwrkey_probe()
423 		dev_err(&pdev->dev, "Can't register power key: %d\n", err);  in pmic8xxx_pwrkey_probe()
428 	device_init_wakeup(&pdev->dev, 1);  in pmic8xxx_pwrkey_probe()
434 	{ .compatible = "qcom,pm8058-pwrkey", .data = &pm8058_pwrkey_shutdown },
435 	{ .compatible = "qcom,pm8921-pwrkey", .data = &pm8921_pwrkey_shutdown },
444 		.name	= "pm8xxx-pwrkey",