1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
13 #include <dt-bindings/power/meson-a1-power.h>
14 #include <linux/arm-smccc.h>
15 #include <linux/firmware/meson/meson_sm.h>
23 	struct meson_secure_pwrc *pwrc;  member
48 	if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_GET, &is_off,  in pwrc_secure_is_off()
49 			  pwrc_domain->index, 0, 0, 0, 0) < 0)  in pwrc_secure_is_off()
61 	if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_SET, NULL,  in meson_secure_pwrc_off()
62 			  pwrc_domain->index, PWRC_OFF, 0, 0, 0) < 0) {  in meson_secure_pwrc_off()
64 		ret = -EINVAL;  in meson_secure_pwrc_off()
76 	if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_SET, NULL,  in meson_secure_pwrc_on()
77 			  pwrc_domain->index, PWRC_ON, 0, 0, 0) < 0) {  in meson_secure_pwrc_on()
79 		ret = -EINVAL;  in meson_secure_pwrc_on()
115 	/* NIC is for the Arm NIC-400 interconnect, and should be always on */
125 	struct meson_secure_pwrc *pwrc;  in meson_secure_pwrc_probe()  local
128 	match = of_device_get_match_data(&pdev->dev);  in meson_secure_pwrc_probe()
130 		dev_err(&pdev->dev, "failed to get match data\n");  in meson_secure_pwrc_probe()
131 		return -ENODEV;  in meson_secure_pwrc_probe()
134 	sm_np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gxbb-sm");  in meson_secure_pwrc_probe()
136 		dev_err(&pdev->dev, "no secure-monitor node\n");  in meson_secure_pwrc_probe()
137 		return -ENODEV;  in meson_secure_pwrc_probe()
140 	pwrc = devm_kzalloc(&pdev->dev, sizeof(*pwrc), GFP_KERNEL);  in meson_secure_pwrc_probe()
141 	if (!pwrc) {  in meson_secure_pwrc_probe()
143 		return -ENOMEM;  in meson_secure_pwrc_probe()
146 	pwrc->fw = meson_sm_get(sm_np);  in meson_secure_pwrc_probe()
148 	if (!pwrc->fw)  in meson_secure_pwrc_probe()
149 		return -EPROBE_DEFER;  in meson_secure_pwrc_probe()
151 	pwrc->xlate.domains = devm_kcalloc(&pdev->dev, match->count,  in meson_secure_pwrc_probe()
152 					   sizeof(*pwrc->xlate.domains),  in meson_secure_pwrc_probe()
154 	if (!pwrc->xlate.domains)  in meson_secure_pwrc_probe()
155 		return -ENOMEM;  in meson_secure_pwrc_probe()
157 	pwrc->domains = devm_kcalloc(&pdev->dev, match->count,  in meson_secure_pwrc_probe()
158 				     sizeof(*pwrc->domains), GFP_KERNEL);  in meson_secure_pwrc_probe()
159 	if (!pwrc->domains)  in meson_secure_pwrc_probe()
160 		return -ENOMEM;  in meson_secure_pwrc_probe()
162 	pwrc->xlate.num_domains = match->count;  in meson_secure_pwrc_probe()
163 	platform_set_drvdata(pdev, pwrc);  in meson_secure_pwrc_probe()
165 	for (i = 0 ; i < match->count ; ++i) {  in meson_secure_pwrc_probe()
166 		struct meson_secure_pwrc_domain *dom = &pwrc->domains[i];  in meson_secure_pwrc_probe()
168 		if (!match->domains[i].index)  in meson_secure_pwrc_probe()
171 		dom->pwrc = pwrc;  in meson_secure_pwrc_probe()
172 		dom->index = match->domains[i].index;  in meson_secure_pwrc_probe()
173 		dom->base.name = match->domains[i].name;  in meson_secure_pwrc_probe()
174 		dom->base.flags = match->domains[i].flags;  in meson_secure_pwrc_probe()
175 		dom->base.power_on = meson_secure_pwrc_on;  in meson_secure_pwrc_probe()
176 		dom->base.power_off = meson_secure_pwrc_off;  in meson_secure_pwrc_probe()
178 		pm_genpd_init(&dom->base, NULL, match->domains[i].is_off(dom));  in meson_secure_pwrc_probe()
180 		pwrc->xlate.domains[i] = &dom->base;  in meson_secure_pwrc_probe()
183 	return of_genpd_add_provider_onecell(pdev->dev.of_node, &pwrc->xlate);  in meson_secure_pwrc_probe()
193 		.compatible = "amlogic,meson-a1-pwrc",