1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * pwrseq_sd8787.c - power sequence support for Marvell SD8787 BT + Wifi chip
22 #include <linux/mmc/host.h>
24 #include "pwrseq.h"
27 	struct mmc_pwrseq pwrseq;  member
32 #define to_pwrseq_sd8787(p) container_of(p, struct mmc_pwrseq_sd8787, pwrseq)
36 	struct mmc_pwrseq_sd8787 *pwrseq = to_pwrseq_sd8787(host->pwrseq);  in mmc_pwrseq_sd8787_pre_power_on()  local
38 	gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);  in mmc_pwrseq_sd8787_pre_power_on()
41 	gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 1);  in mmc_pwrseq_sd8787_pre_power_on()
46 	struct mmc_pwrseq_sd8787 *pwrseq = to_pwrseq_sd8787(host->pwrseq);  in mmc_pwrseq_sd8787_power_off()  local
48 	gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 0);  in mmc_pwrseq_sd8787_power_off()
49 	gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);  in mmc_pwrseq_sd8787_power_off()
58 	{ .compatible = "mmc-pwrseq-sd8787",},
65 	struct mmc_pwrseq_sd8787 *pwrseq;  in mmc_pwrseq_sd8787_probe()  local
66 	struct device *dev = &pdev->dev;  in mmc_pwrseq_sd8787_probe()
68 	pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);  in mmc_pwrseq_sd8787_probe()
69 	if (!pwrseq)  in mmc_pwrseq_sd8787_probe()
70 		return -ENOMEM;  in mmc_pwrseq_sd8787_probe()
72 	pwrseq->pwrdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);  in mmc_pwrseq_sd8787_probe()
73 	if (IS_ERR(pwrseq->pwrdn_gpio))  in mmc_pwrseq_sd8787_probe()
74 		return PTR_ERR(pwrseq->pwrdn_gpio);  in mmc_pwrseq_sd8787_probe()
76 	pwrseq->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in mmc_pwrseq_sd8787_probe()
77 	if (IS_ERR(pwrseq->reset_gpio))  in mmc_pwrseq_sd8787_probe()
78 		return PTR_ERR(pwrseq->reset_gpio);  in mmc_pwrseq_sd8787_probe()
80 	pwrseq->pwrseq.dev = dev;  in mmc_pwrseq_sd8787_probe()
81 	pwrseq->pwrseq.ops = &mmc_pwrseq_sd8787_ops;  in mmc_pwrseq_sd8787_probe()
82 	pwrseq->pwrseq.owner = THIS_MODULE;  in mmc_pwrseq_sd8787_probe()
83 	platform_set_drvdata(pdev, pwrseq);  in mmc_pwrseq_sd8787_probe()
85 	return mmc_pwrseq_register(&pwrseq->pwrseq);  in mmc_pwrseq_sd8787_probe()
90 	struct mmc_pwrseq_sd8787 *pwrseq = platform_get_drvdata(pdev);  in mmc_pwrseq_sd8787_remove()  local
92 	mmc_pwrseq_unregister(&pwrseq->pwrseq);  in mmc_pwrseq_sd8787_remove()