This patch adds Power controller driver support for Amlogic A1 family using secure monitor calls. The power domains register only can access in secure world.
Signed-off-by: Alexey Romanov avromanov@sberdevices.ru --- drivers/power/domain/Kconfig | 7 + drivers/power/domain/Makefile | 1 + drivers/power/domain/meson-secure-pwrc.c | 160 +++++++++++++++++++++++ 3 files changed, 168 insertions(+) create mode 100644 drivers/power/domain/meson-secure-pwrc.c
diff --git a/drivers/power/domain/Kconfig b/drivers/power/domain/Kconfig index 7e1b8c072fa..411c210756a 100644 --- a/drivers/power/domain/Kconfig +++ b/drivers/power/domain/Kconfig @@ -68,6 +68,13 @@ config MESON_EE_POWER_DOMAIN Enable support for manipulating Amlogic Meson Everything-Else power domains.
+config MESON_SECURE_POWER_DOMAIN + bool "Enable Amlogic Secure power domain driver" + depends on POWER_DOMAIN && ARCH_MESON && MESON_A1 + help + Enable support for manipulating Amlogic Meson Secure power domains. + Support for Amlogic A1 series. + config SANDBOX_POWER_DOMAIN bool "Enable the sandbox power domain test driver" depends on POWER_DOMAIN && SANDBOX diff --git a/drivers/power/domain/Makefile b/drivers/power/domain/Makefile index e6244776216..aa5a4ba57cd 100644 --- a/drivers/power/domain/Makefile +++ b/drivers/power/domain/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_IMX8MP_HSIOMIX_BLKCTRL) += imx8mp-hsiomix.o obj-$(CONFIG_MTK_POWER_DOMAIN) += mtk-power-domain.o obj-$(CONFIG_MESON_GX_VPU_POWER_DOMAIN) += meson-gx-pwrc-vpu.o obj-$(CONFIG_MESON_EE_POWER_DOMAIN) += meson-ee-pwrc.o +obj-$(CONFIG_MESON_SECURE_POWER_DOMAIN) += meson-secure-pwrc.o obj-$(CONFIG_SANDBOX_POWER_DOMAIN) += sandbox-power-domain.o obj-$(CONFIG_SANDBOX_POWER_DOMAIN) += sandbox-power-domain-test.o obj-$(CONFIG_TEGRA186_POWER_DOMAIN) += tegra186-power-domain.o diff --git a/drivers/power/domain/meson-secure-pwrc.c b/drivers/power/domain/meson-secure-pwrc.c new file mode 100644 index 00000000000..f70f8e02423 --- /dev/null +++ b/drivers/power/domain/meson-secure-pwrc.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2023 SberDevices, Inc. + * Author: Alexey Romanov avromanov@sberdevices.ru + */ + +#include <dm.h> +#include <asm/arch/sm.h> +#include <power-domain.h> +#include <power-domain-uclass.h> +#include <dt-bindings/power/meson-a1-power.h> + +struct meson_secure_pwrc_domain_desc { + char *name; + size_t index; +}; + +struct meson_secure_pwrc_domain_data { + unsigned int count; + struct meson_secure_pwrc_domain_desc *domains; +}; + +struct meson_secure_pwrc_priv { + const struct meson_secure_pwrc_domain_data *data; +}; + +static int meson_secure_pwrc_on(struct power_domain *power_domain) +{ + struct meson_secure_pwrc_priv *priv = dev_get_priv(power_domain->dev); + struct meson_secure_pwrc_domain_desc *pwrc_domain; + int err; + + pwrc_domain = &priv->data->domains[power_domain->id]; + + err = meson_sm_pwrdm_on(pwrc_domain->index); + if (err) { + pr_err("meson_sm_pwrdm_on() failed (%d)\n", err); + return err; + } + + pr_debug("enable %s power domain\n", pwrc_domain->name); + + return 0; +} + +static int meson_secure_pwrc_off(struct power_domain *power_domain) +{ + struct meson_secure_pwrc_priv *priv = dev_get_priv(power_domain->dev); + struct meson_secure_pwrc_domain_desc *pwrc_domain; + int err; + + pwrc_domain = &priv->data->domains[power_domain->id]; + + err = meson_sm_pwrdm_off(pwrc_domain->index); + if (err) { + pr_err("meson_sm_pwrdm_off() failed (%d)\n", err); + return err; + } + + pr_debug("disable %s power domain\n", pwrc_domain->name); + + return 0; +} + +static int meson_secure_pwrc_of_xlate(struct power_domain *power_domain, + struct ofnode_phandle_args *args) +{ + struct meson_secure_pwrc_priv *priv = dev_get_priv(power_domain->dev); + struct meson_secure_pwrc_domain_desc *pwrc_domain; + + if (args->args_count < 1) { + pr_err("invalid args count: %d\n", args->args_count); + return -EINVAL; + } + + power_domain->id = args->args[0]; + + if (power_domain->id >= priv->data->count) { + pr_err("domain with ID=%lu is invalid\n", power_domain->id); + return -EINVAL; + } + + pwrc_domain = &priv->data->domains[power_domain->id]; + + if (!pwrc_domain->name) { + pr_err("domain with ID=%lu is invalid\n", power_domain->id); + return -EINVAL; + } + + return 0; +} + +#define SEC_PD(__name) \ +[PWRC_##__name##_ID] = \ +{ \ + .name = #__name, \ + .index = PWRC_##__name##_ID, \ +} + +static struct meson_secure_pwrc_domain_desc a1_pwrc_domains[] = { + SEC_PD(DSPA), + SEC_PD(DSPB), + SEC_PD(UART), + SEC_PD(DMC), + SEC_PD(I2C), + SEC_PD(PSRAM), + SEC_PD(ACODEC), + SEC_PD(AUDIO), + SEC_PD(OTP), + SEC_PD(DMA), + SEC_PD(SD_EMMC), + SEC_PD(RAMA), + SEC_PD(RAMB), + SEC_PD(IR), + SEC_PD(SPICC), + SEC_PD(SPIFC), + SEC_PD(USB), + SEC_PD(NIC), + SEC_PD(PDMIN), + SEC_PD(RSA), +}; + +struct power_domain_ops meson_secure_pwrc_ops = { + .on = meson_secure_pwrc_on, + .off = meson_secure_pwrc_off, + .of_xlate = meson_secure_pwrc_of_xlate, +}; + +static struct meson_secure_pwrc_domain_data meson_secure_a1_pwrc_data = { + .count = ARRAY_SIZE(a1_pwrc_domains), + .domains = a1_pwrc_domains, +}; + +static const struct udevice_id meson_secure_pwrc_ids[] = { + { + .compatible = "amlogic,meson-a1-pwrc", + .data = (unsigned long)&meson_secure_a1_pwrc_data, + }, + { } +}; + +static int meson_secure_pwrc_probe(struct udevice *dev) +{ + struct meson_secure_pwrc_priv *priv = dev_get_priv(dev); + + priv->data = (void *)dev_get_driver_data(dev); + if (!priv->data) + return -EINVAL; + + return 0; +} + +U_BOOT_DRIVER(meson_secure_pwrc) = { + .name = "meson_secure_pwrc", + .id = UCLASS_POWER_DOMAIN, + .of_match = meson_secure_pwrc_ids, + .probe = meson_secure_pwrc_probe, + .ops = &meson_secure_pwrc_ops, + .priv_auto = sizeof(struct meson_secure_pwrc_priv), +};