23 #include "pwrseq.h"
26 	struct mmc_pwrseq pwrseq;  member
34 #define to_pwrseq_simple(p) container_of(p, struct mmc_pwrseq_simple, pwrseq)
36 static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,  in mmc_pwrseq_simple_set_gpios_value()  argument
39 	struct gpio_descs *reset_gpios = pwrseq->reset_gpios;  in mmc_pwrseq_simple_set_gpios_value()
63 	struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);  in mmc_pwrseq_simple_pre_power_on()  local
65 	if (!IS_ERR(pwrseq->ext_clk) && !pwrseq->clk_enabled) {  in mmc_pwrseq_simple_pre_power_on()
66 		clk_prepare_enable(pwrseq->ext_clk);  in mmc_pwrseq_simple_pre_power_on()
67 		pwrseq->clk_enabled = true;  in mmc_pwrseq_simple_pre_power_on()
70 	mmc_pwrseq_simple_set_gpios_value(pwrseq, 1);  in mmc_pwrseq_simple_pre_power_on()
75 	struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);  in mmc_pwrseq_simple_post_power_on()  local
77 	mmc_pwrseq_simple_set_gpios_value(pwrseq, 0);  in mmc_pwrseq_simple_post_power_on()
79 	if (pwrseq->post_power_on_delay_ms)  in mmc_pwrseq_simple_post_power_on()
80 		msleep(pwrseq->post_power_on_delay_ms);  in mmc_pwrseq_simple_post_power_on()
85 	struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);  in mmc_pwrseq_simple_power_off()  local
87 	mmc_pwrseq_simple_set_gpios_value(pwrseq, 1);  in mmc_pwrseq_simple_power_off()
89 	if (pwrseq->power_off_delay_us)  in mmc_pwrseq_simple_power_off()
90 		usleep_range(pwrseq->power_off_delay_us,  in mmc_pwrseq_simple_power_off()
91 			2 * pwrseq->power_off_delay_us);  in mmc_pwrseq_simple_power_off()
93 	if (!IS_ERR(pwrseq->ext_clk) && pwrseq->clk_enabled) {  in mmc_pwrseq_simple_power_off()
94 		clk_disable_unprepare(pwrseq->ext_clk);  in mmc_pwrseq_simple_power_off()
95 		pwrseq->clk_enabled = false;  in mmc_pwrseq_simple_power_off()
106 	{ .compatible = "mmc-pwrseq-simple",},
113 	struct mmc_pwrseq_simple *pwrseq;  in mmc_pwrseq_simple_probe()  local
116 	pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);  in mmc_pwrseq_simple_probe()
117 	if (!pwrseq)  in mmc_pwrseq_simple_probe()
120 	pwrseq->ext_clk = devm_clk_get(dev, "ext_clock");  in mmc_pwrseq_simple_probe()
121 	if (IS_ERR(pwrseq->ext_clk) && PTR_ERR(pwrseq->ext_clk) != -ENOENT)  in mmc_pwrseq_simple_probe()
122 		return dev_err_probe(dev, PTR_ERR(pwrseq->ext_clk), "external clock not ready\n");  in mmc_pwrseq_simple_probe()
124 	pwrseq->reset_gpios = devm_gpiod_get_array(dev, "reset",  in mmc_pwrseq_simple_probe()
126 	if (IS_ERR(pwrseq->reset_gpios) &&  in mmc_pwrseq_simple_probe()
127 	    PTR_ERR(pwrseq->reset_gpios) != -ENOENT &&  in mmc_pwrseq_simple_probe()
128 	    PTR_ERR(pwrseq->reset_gpios) != -ENOSYS) {  in mmc_pwrseq_simple_probe()
129 		return dev_err_probe(dev, PTR_ERR(pwrseq->reset_gpios), "reset GPIOs not ready\n");  in mmc_pwrseq_simple_probe()
133 				 &pwrseq->post_power_on_delay_ms);  in mmc_pwrseq_simple_probe()
135 				 &pwrseq->power_off_delay_us);  in mmc_pwrseq_simple_probe()
137 	pwrseq->pwrseq.dev = dev;  in mmc_pwrseq_simple_probe()
138 	pwrseq->pwrseq.ops = &mmc_pwrseq_simple_ops;  in mmc_pwrseq_simple_probe()
139 	pwrseq->pwrseq.owner = THIS_MODULE;  in mmc_pwrseq_simple_probe()
140 	platform_set_drvdata(pdev, pwrseq);  in mmc_pwrseq_simple_probe()
142 	return mmc_pwrseq_register(&pwrseq->pwrseq);  in mmc_pwrseq_simple_probe()
147 	struct mmc_pwrseq_simple *pwrseq = platform_get_drvdata(pdev);  in mmc_pwrseq_simple_remove()  local
149 	mmc_pwrseq_unregister(&pwrseq->pwrseq);  in mmc_pwrseq_simple_remove()