1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
13 #include <dt-bindings/power/meson-a1-power.h>
14 #include <dt-bindings/power/amlogic,c3-pwrc.h>
15 #include <dt-bindings/power/meson-s4-power.h>
16 #include <dt-bindings/power/amlogic,t7-pwrc.h>
17 #include <dt-bindings/power/amlogic,a4-pwrc.h>
18 #include <dt-bindings/power/amlogic,a5-pwrc.h>
19 #include <linux/arm-smccc.h>
20 #include <linux/firmware/meson/meson_sm.h>
31 	struct meson_secure_pwrc *pwrc;  member
57 	if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_GET, &is_off,  in pwrc_secure_is_off()
58 			  pwrc_domain->index, 0, 0, 0, 0) < 0)  in pwrc_secure_is_off()
70 	if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_SET, NULL,  in meson_secure_pwrc_off()
71 			  pwrc_domain->index, PWRC_OFF, 0, 0, 0) < 0) {  in meson_secure_pwrc_off()
73 		ret = -EINVAL;  in meson_secure_pwrc_off()
85 	if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_SET, NULL,  in meson_secure_pwrc_on()
86 			  pwrc_domain->index, PWRC_ON, 0, 0, 0) < 0) {  in meson_secure_pwrc_on()
88 		ret = -EINVAL;  in meson_secure_pwrc_on()
135 	/* NIC is for the Arm NIC-400 interconnect, and should be always on */
249 	/* NIC is for the Arm NIC-400 interconnect, and should be always on */
271 	struct meson_secure_pwrc *pwrc;  in meson_secure_pwrc_probe()  local
274 	match = of_device_get_match_data(&pdev->dev);  in meson_secure_pwrc_probe()
276 		dev_err(&pdev->dev, "failed to get match data\n");  in meson_secure_pwrc_probe()
277 		return -ENODEV;  in meson_secure_pwrc_probe()
280 	sm_np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gxbb-sm");  in meson_secure_pwrc_probe()
282 		dev_err(&pdev->dev, "no secure-monitor node\n");  in meson_secure_pwrc_probe()
283 		return -ENODEV;  in meson_secure_pwrc_probe()
286 	pwrc = devm_kzalloc(&pdev->dev, sizeof(*pwrc), GFP_KERNEL);  in meson_secure_pwrc_probe()
287 	if (!pwrc) {  in meson_secure_pwrc_probe()
289 		return -ENOMEM;  in meson_secure_pwrc_probe()
292 	pwrc->fw = meson_sm_get(sm_np);  in meson_secure_pwrc_probe()
294 	if (!pwrc->fw)  in meson_secure_pwrc_probe()
295 		return -EPROBE_DEFER;  in meson_secure_pwrc_probe()
297 	pwrc->xlate.domains = devm_kcalloc(&pdev->dev, match->count,  in meson_secure_pwrc_probe()
298 					   sizeof(*pwrc->xlate.domains),  in meson_secure_pwrc_probe()
300 	if (!pwrc->xlate.domains)  in meson_secure_pwrc_probe()
301 		return -ENOMEM;  in meson_secure_pwrc_probe()
303 	pwrc->domains = devm_kcalloc(&pdev->dev, match->count,  in meson_secure_pwrc_probe()
304 				     sizeof(*pwrc->domains), GFP_KERNEL);  in meson_secure_pwrc_probe()
305 	if (!pwrc->domains)  in meson_secure_pwrc_probe()
306 		return -ENOMEM;  in meson_secure_pwrc_probe()
308 	pwrc->xlate.num_domains = match->count;  in meson_secure_pwrc_probe()
309 	platform_set_drvdata(pdev, pwrc);  in meson_secure_pwrc_probe()
311 	for (i = 0 ; i < match->count ; ++i) {  in meson_secure_pwrc_probe()
312 		struct meson_secure_pwrc_domain *dom = &pwrc->domains[i];  in meson_secure_pwrc_probe()
314 		if (!match->domains[i].name)  in meson_secure_pwrc_probe()
317 		dom->pwrc = pwrc;  in meson_secure_pwrc_probe()
318 		dom->index = match->domains[i].index;  in meson_secure_pwrc_probe()
319 		dom->parent = match->domains[i].parent;  in meson_secure_pwrc_probe()
320 		dom->base.name = match->domains[i].name;  in meson_secure_pwrc_probe()
321 		dom->base.flags = match->domains[i].flags;  in meson_secure_pwrc_probe()
322 		dom->base.power_on = meson_secure_pwrc_on;  in meson_secure_pwrc_probe()
323 		dom->base.power_off = meson_secure_pwrc_off;  in meson_secure_pwrc_probe()
325 		if (match->domains[i].is_off(dom) && (dom->base.flags & GENPD_FLAG_ALWAYS_ON))  in meson_secure_pwrc_probe()
326 			meson_secure_pwrc_on(&dom->base);  in meson_secure_pwrc_probe()
328 		pm_genpd_init(&dom->base, NULL, match->domains[i].is_off(dom));  in meson_secure_pwrc_probe()
330 		pwrc->xlate.domains[i] = &dom->base;  in meson_secure_pwrc_probe()
333 	for (i = 0; i < match->count; i++) {  in meson_secure_pwrc_probe()
334 		struct meson_secure_pwrc_domain *dom = pwrc->domains;  in meson_secure_pwrc_probe()
336 		if (!match->domains[i].name || match->domains[i].parent == PWRC_NO_PARENT)  in meson_secure_pwrc_probe()
342 	return of_genpd_add_provider_onecell(pdev->dev.of_node, &pwrc->xlate);  in meson_secure_pwrc_probe()
377 		.compatible = "amlogic,meson-a1-pwrc",
381 		.compatible = "amlogic,a4-pwrc",
385 		.compatible = "amlogic,a5-pwrc",
389 		.compatible = "amlogic,c3-pwrc",
393 		.compatible = "amlogic,meson-s4-pwrc",
397 		.compatible = "amlogic,t7-pwrc",
412 MODULE_DESCRIPTION("Amlogic Meson Secure Power Domains driver");