diff options
Diffstat (limited to 'drivers/soc/amlogic/meson-secure-pwrc.c')
| -rw-r--r-- | drivers/soc/amlogic/meson-secure-pwrc.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/drivers/soc/amlogic/meson-secure-pwrc.c b/drivers/soc/amlogic/meson-secure-pwrc.c deleted file mode 100644 index 25b4b71df9b8..000000000000 --- a/drivers/soc/amlogic/meson-secure-pwrc.c +++ /dev/null @@ -1,231 +0,0 @@ -// SPDX-License-Identifier: (GPL-2.0+ OR MIT) -/* - * Copyright (c) 2019 Amlogic, Inc. - * Author: Jianxin Pan <jianxin.pan@amlogic.com> - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/io.h> -#include <linux/of_device.h> -#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> - -#define PWRC_ON 1 -#define PWRC_OFF 0 - -struct meson_secure_pwrc_domain { - struct generic_pm_domain base; - unsigned int index; - struct meson_secure_pwrc *pwrc; -}; - -struct meson_secure_pwrc { - struct meson_secure_pwrc_domain *domains; - struct genpd_onecell_data xlate; - struct meson_sm_firmware *fw; -}; - -struct meson_secure_pwrc_domain_desc { - unsigned int index; - unsigned int flags; - char *name; - bool (*is_off)(struct meson_secure_pwrc_domain *pwrc_domain); -}; - -struct meson_secure_pwrc_domain_data { - unsigned int count; - struct meson_secure_pwrc_domain_desc *domains; -}; - -static bool pwrc_secure_is_off(struct meson_secure_pwrc_domain *pwrc_domain) -{ - int is_off = 1; - - if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_GET, &is_off, - pwrc_domain->index, 0, 0, 0, 0) < 0) - pr_err("failed to get power domain status\n"); - - return is_off; -} - -static int meson_secure_pwrc_off(struct generic_pm_domain *domain) -{ - int ret = 0; - struct meson_secure_pwrc_domain *pwrc_domain = - container_of(domain, struct meson_secure_pwrc_domain, base); - - if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_SET, NULL, - pwrc_domain->index, PWRC_OFF, 0, 0, 0) < 0) { - pr_err("failed to set power domain off\n"); - ret = -EINVAL; - } - - return ret; -} - -static int meson_secure_pwrc_on(struct generic_pm_domain *domain) -{ - int ret = 0; - struct meson_secure_pwrc_domain *pwrc_domain = - container_of(domain, struct meson_secure_pwrc_domain, base); - - if (meson_sm_call(pwrc_domain->pwrc->fw, SM_A1_PWRC_SET, NULL, - pwrc_domain->index, PWRC_ON, 0, 0, 0) < 0) { - pr_err("failed to set power domain on\n"); - ret = -EINVAL; - } - - return ret; -} - -#define SEC_PD(__name, __flag) \ -[PWRC_##__name##_ID] = \ -{ \ - .name = #__name, \ - .index = PWRC_##__name##_ID, \ - .is_off = pwrc_secure_is_off, \ - .flags = __flag, \ -} - -static struct meson_secure_pwrc_domain_desc a1_pwrc_domains[] = { - SEC_PD(DSPA, 0), - SEC_PD(DSPB, 0), - /* UART should keep working in ATF after suspend and before resume */ - SEC_PD(UART, GENPD_FLAG_ALWAYS_ON), - /* DMC is for DDR PHY ana/dig and DMC, and should be always on */ - SEC_PD(DMC, GENPD_FLAG_ALWAYS_ON), - SEC_PD(I2C, 0), - SEC_PD(PSRAM, 0), - SEC_PD(ACODEC, 0), - SEC_PD(AUDIO, 0), - SEC_PD(OTP, 0), - SEC_PD(DMA, GENPD_FLAG_ALWAYS_ON | GENPD_FLAG_IRQ_SAFE), - SEC_PD(SD_EMMC, 0), - SEC_PD(RAMA, 0), - /* SRAMB is used as ATF runtime memory, and should be always on */ - SEC_PD(RAMB, GENPD_FLAG_ALWAYS_ON), - SEC_PD(IR, 0), - SEC_PD(SPICC, 0), - SEC_PD(SPIFC, 0), - SEC_PD(USB, 0), - /* NIC is for the Arm NIC-400 interconnect, and should be always on */ - SEC_PD(NIC, GENPD_FLAG_ALWAYS_ON), - SEC_PD(PDMIN, 0), - 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; - struct device_node *sm_np; - struct meson_secure_pwrc *pwrc; - const struct meson_secure_pwrc_domain_data *match; - - match = of_device_get_match_data(&pdev->dev); - if (!match) { - dev_err(&pdev->dev, "failed to get match data\n"); - return -ENODEV; - } - - sm_np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gxbb-sm"); - if (!sm_np) { - dev_err(&pdev->dev, "no secure-monitor node\n"); - return -ENODEV; - } - - pwrc = devm_kzalloc(&pdev->dev, sizeof(*pwrc), GFP_KERNEL); - if (!pwrc) { - of_node_put(sm_np); - return -ENOMEM; - } - - pwrc->fw = meson_sm_get(sm_np); - of_node_put(sm_np); - if (!pwrc->fw) - return -EPROBE_DEFER; - - pwrc->xlate.domains = devm_kcalloc(&pdev->dev, match->count, - sizeof(*pwrc->xlate.domains), - GFP_KERNEL); - if (!pwrc->xlate.domains) - return -ENOMEM; - - pwrc->domains = devm_kcalloc(&pdev->dev, match->count, - sizeof(*pwrc->domains), GFP_KERNEL); - if (!pwrc->domains) - return -ENOMEM; - - pwrc->xlate.num_domains = match->count; - platform_set_drvdata(pdev, pwrc); - - for (i = 0 ; i < match->count ; ++i) { - struct meson_secure_pwrc_domain *dom = &pwrc->domains[i]; - - if (!match->domains[i].index) - continue; - - dom->pwrc = pwrc; - dom->index = match->domains[i].index; - dom->base.name = match->domains[i].name; - dom->base.flags = match->domains[i].flags; - dom->base.power_on = meson_secure_pwrc_on; - dom->base.power_off = meson_secure_pwrc_off; - - pm_genpd_init(&dom->base, NULL, match->domains[i].is_off(dom)); - - pwrc->xlate.domains[i] = &dom->base; - } - - return of_genpd_add_provider_onecell(pdev->dev.of_node, &pwrc->xlate); -} - -static struct meson_secure_pwrc_domain_data meson_secure_a1_pwrc_data = { - .domains = a1_pwrc_domains, - .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 */ } -}; -MODULE_DEVICE_TABLE(of, meson_secure_pwrc_match_table); - -static struct platform_driver meson_secure_pwrc_driver = { - .probe = meson_secure_pwrc_probe, - .driver = { - .name = "meson_secure_pwrc", - .of_match_table = meson_secure_pwrc_match_table, - }, -}; -module_platform_driver(meson_secure_pwrc_driver); -MODULE_LICENSE("Dual MIT/GPL"); |