soc: s4: Add support for power domains controller

Add support s4 Power controller. In s4, power control
registers are in secure domain, and should be accessed by smc.

Signed-off-by: Shunzhou Jiang <[e-mail]>
Reviewed-by: Kevin Hilman <[e-mail]>
Signed-off-by: Neil Armstrong <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/soc/amlogic/meson-secure-pwrc.c

···
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
 #include <dt-bindings/power/meson-a1-power.h>
+#include <dt-bindings/power/meson-s4-power.h>
 #include <linux/arm-smccc.h>
 #include <linux/firmware/meson/meson_sm.h>
 #include <linux/module.h>
···
 	SEC_PD(RSA,	0),
 };
 
+static struct meson_secure_pwrc_domain_desc s4_pwrc_domains[] = {
+	SEC_PD(S4_DOS_HEVC,	0),
+	SEC_PD(S4_DOS_VDEC,	0),
+	SEC_PD(S4_VPU_HDMI,	0),
+	SEC_PD(S4_USB_COMB,	0),
+	SEC_PD(S4_GE2D,		0),
+	/* ETH is for ethernet online wakeup, and should be always on */
+	SEC_PD(S4_ETH,		GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(S4_DEMOD,	0),
+	SEC_PD(S4_AUDIO,	0),
+};
+
 static int meson_secure_pwrc_probe(struct platform_device *pdev)
 {
 	int i;
···
 	.count = ARRAY_SIZE(a1_pwrc_domains),
 };
 
+static struct meson_secure_pwrc_domain_data meson_secure_s4_pwrc_data = {
+	.domains = s4_pwrc_domains,
+	.count = ARRAY_SIZE(s4_pwrc_domains),
+};
+
 static const struct of_device_id meson_secure_pwrc_match_table[] = {
 	{
 		.compatible = "amlogic,meson-a1-pwrc",
 		.data = &meson_secure_a1_pwrc_data,
+	},
+	{
+		.compatible = "amlogic,meson-s4-pwrc",
+		.data = &meson_secure_s4_pwrc_data,
 	},
 	{ /* sentinel */ }
 };