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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
commit | 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch) | |
tree | bcf648efac40ca6139842707f0eba5a4496a6dd2 /plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm.c | |
parent | Initial commit. (diff) | |
download | arm-trusted-firmware-102b0d2daa97dae68d3eed54d8fe37a9cc38a892.tar.xz arm-trusted-firmware-102b0d2daa97dae68d3eed54d8fe37a9cc38a892.zip |
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm.c')
-rw-r--r-- | plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm.c b/plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm.c new file mode 100644 index 0000000..b483c36 --- /dev/null +++ b/plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm.c @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2020, MediaTek Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <stdint.h> + +#include <arch_helpers.h> +#include <lib/psci/psci.h> +#include <lib/spinlock.h> + +#include <mt_cpu_pm_cpc.h> +#include <mt_lp_irqremain.h> +#include <mt_lp_rm.h> +#include <mt_mcdi.h> +#include <plat_mtk_lpm.h> +#include <plat_pm.h> + +DEFINE_SYSREG_RW_FUNCS(dbgprcr_el1); + +static int plat_mt_lp_cpu_rc; + +static int pwr_state_prompt(unsigned int cpu, const psci_power_state_t *state) +{ + return 0; +} + +static int pwr_state_reflect(unsigned int cpu, const psci_power_state_t *state) +{ + mtk_cpc_core_on_hint_clr(cpu); + + if (IS_SYSTEM_SUSPEND_STATE(state)) { + mtk_cpc_time_sync(); + } + + return 0; +} + +static int pwr_cpu_pwron(unsigned int cpu, const psci_power_state_t *state) +{ + return 0; +} + +static int pwr_cpu_pwrdwn(unsigned int cpu, const psci_power_state_t *state) +{ + /* clear DBGPRCR.CORENPDRQ to allow CPU power down */ + write_dbgprcr_el1(0ULL); + + return 0; +} + +static int pwr_cluster_pwron(unsigned int cpu, const psci_power_state_t *state) +{ + return 0; +} + +static int pwr_cluster_pwrdwn(unsigned int cpu, const psci_power_state_t *state) +{ + return 0; +} + +static int pwr_mcusys_pwron(unsigned int cpu, const psci_power_state_t *state) +{ + if (!IS_MCUSYS_OFF_STATE(state) || (plat_mt_lp_cpu_rc < 0)) { + return -1; + } + + mtk_cpc_mcusys_off_reflect(); + + return 0; +} + +static int pwr_mcusys_pwron_finished(unsigned int cpu, + const psci_power_state_t *state) +{ + int state_id = state->pwr_domain_state[MTK_AFFLVL_MCUSYS]; + + if (!IS_MCUSYS_OFF_STATE(state) || (plat_mt_lp_cpu_rc < 0)) { + return -1; + } + + mt_lp_rm_reset_constraint(plat_mt_lp_cpu_rc, cpu, state_id); + mt_lp_irqremain_release(); + + return 0; +} + +static int pwr_mcusys_pwrdwn(unsigned int cpu, const psci_power_state_t *state) +{ + int state_id = state->pwr_domain_state[MTK_AFFLVL_MCUSYS]; + + if (!IS_MCUSYS_OFF_STATE(state)) { + goto mt_pwr_mcusysoff_break; + } + + if (mcdi_try_init() != 0) { + goto mt_pwr_mcusysoff_break; + } + + if (mtk_cpc_mcusys_off_prepare() != CPC_SUCCESS) { + goto mt_pwr_mcusysoff_break; + } + + plat_mt_lp_cpu_rc = + mt_lp_rm_find_and_run_constraint(0, cpu, state_id, NULL); + + if (plat_mt_lp_cpu_rc < 0) { + goto mt_pwr_mcusysoff_reflect; + } + + mt_lp_irqremain_aquire(); + + return 0; + +mt_pwr_mcusysoff_reflect: + mtk_cpc_mcusys_off_reflect(); + +mt_pwr_mcusysoff_break: + plat_mt_lp_cpu_rc = -1; + + return -1; +} + +static const struct mt_lpm_tz plat_pm = { + .pwr_prompt = pwr_state_prompt, + .pwr_reflect = pwr_state_reflect, + .pwr_cpu_on = pwr_cpu_pwron, + .pwr_cpu_dwn = pwr_cpu_pwrdwn, + .pwr_cluster_on = pwr_cluster_pwron, + .pwr_cluster_dwn = pwr_cluster_pwrdwn, + .pwr_mcusys_dwn = pwr_mcusys_pwrdwn, + .pwr_mcusys_on = pwr_mcusys_pwron, + .pwr_mcusys_on_finished = pwr_mcusys_pwron_finished +}; + +const struct mt_lpm_tz *mt_plat_cpu_pm_init(void) +{ + mtk_cpc_init(); + + if (mcdi_try_init() == 0) { + INFO("MCDI init done.\n"); + } + + mt_lp_irqremain_init(); + + return &plat_pm; +} |