diff options
Diffstat (limited to 'drivers/media/platform/qcom/iris/iris_vpu_common.c')
| -rw-r--r-- | drivers/media/platform/qcom/iris/iris_vpu_common.c | 243 |
1 files changed, 240 insertions, 3 deletions
diff --git a/drivers/media/platform/qcom/iris/iris_vpu_common.c b/drivers/media/platform/qcom/iris/iris_vpu_common.c index 34817573f61b..fe9896d66848 100644 --- a/drivers/media/platform/qcom/iris/iris_vpu_common.c +++ b/drivers/media/platform/qcom/iris/iris_vpu_common.c @@ -4,13 +4,16 @@ */ #include <linux/iopoll.h> +#include <linux/pm_opp.h> +#include <linux/reset.h> #include "iris_core.h" #include "iris_vpu_common.h" +#include "iris_vpu_register_defines.h" -#define CPU_BASE_OFFS 0x000A0000 +#define WRAPPER_TZ_BASE_OFFS 0x000C0000 +#define AON_BASE_OFFS 0x000E0000 -#define CPU_CS_BASE_OFFS (CPU_BASE_OFFS) #define CPU_IC_BASE_OFFS (CPU_BASE_OFFS) #define CPU_CS_A2HSOFTINTCLR (CPU_CS_BASE_OFFS + 0x1C) @@ -21,6 +24,7 @@ #define CTRL_INIT_IDLE_MSG_BMSK 0x40000000 #define CTRL_ERROR_STATUS__M 0xfe +#define CTRL_STATUS_PC_READY 0x100 #define QTBL_INFO (CPU_CS_BASE_OFFS + 0x50) #define QTBL_ENABLE BIT(0) @@ -35,15 +39,48 @@ #define HOST2XTENSA_INTR_ENABLE BIT(0) #define CPU_CS_X2RPMH (CPU_CS_BASE_OFFS + 0x168) +#define MSK_SIGNAL_FROM_TENSILICA BIT(0) +#define MSK_CORE_POWER_ON BIT(1) #define CPU_IC_SOFTINT (CPU_IC_BASE_OFFS + 0x150) #define CPU_IC_SOFTINT_H2A_SHFT 0x0 -#define WRAPPER_BASE_OFFS 0x000B0000 #define WRAPPER_INTR_STATUS (WRAPPER_BASE_OFFS + 0x0C) #define WRAPPER_INTR_STATUS_A2HWD_BMSK BIT(3) #define WRAPPER_INTR_STATUS_A2H_BMSK BIT(2) +#define WRAPPER_INTR_MASK (WRAPPER_BASE_OFFS + 0x10) +#define WRAPPER_INTR_MASK_A2HWD_BMSK BIT(3) +#define WRAPPER_INTR_MASK_A2HCPU_BMSK BIT(2) + +#define WRAPPER_DEBUG_BRIDGE_LPI_CONTROL (WRAPPER_BASE_OFFS + 0x54) +#define WRAPPER_DEBUG_BRIDGE_LPI_STATUS (WRAPPER_BASE_OFFS + 0x58) +#define WRAPPER_IRIS_CPU_NOC_LPI_CONTROL (WRAPPER_BASE_OFFS + 0x5C) +#define WRAPPER_IRIS_CPU_NOC_LPI_STATUS (WRAPPER_BASE_OFFS + 0x60) + +#define WRAPPER_TZ_CPU_STATUS (WRAPPER_TZ_BASE_OFFS + 0x10) +#define WRAPPER_TZ_CTL_AXI_CLOCK_CONFIG (WRAPPER_TZ_BASE_OFFS + 0x14) +#define CTL_AXI_CLK_HALT BIT(0) +#define CTL_CLK_HALT BIT(1) + +#define WRAPPER_TZ_QNS4PDXFIFO_RESET (WRAPPER_TZ_BASE_OFFS + 0x18) +#define RESET_HIGH BIT(0) + +#define AON_WRAPPER_MVP_NOC_LPI_CONTROL (AON_BASE_OFFS) +#define REQ_POWER_DOWN_PREP BIT(0) + +#define AON_WRAPPER_MVP_NOC_LPI_STATUS (AON_BASE_OFFS + 0x4) + +static void iris_vpu_interrupt_init(struct iris_core *core) +{ + u32 mask_val; + + mask_val = readl(core->reg_base + WRAPPER_INTR_MASK); + mask_val &= ~(WRAPPER_INTR_MASK_A2HWD_BMSK | + WRAPPER_INTR_MASK_A2HCPU_BMSK); + writel(mask_val, core->reg_base + WRAPPER_INTR_MASK); +} + static void iris_vpu_setup_ucregion_memory_map(struct iris_core *core) { u32 queue_size, value; @@ -130,3 +167,203 @@ int iris_vpu_watchdog(struct iris_core *core, u32 intr_status) return 0; } + +int iris_vpu_prepare_pc(struct iris_core *core) +{ + u32 wfi_status, idle_status, pc_ready; + u32 ctrl_status, val = 0; + int ret; + + ctrl_status = readl(core->reg_base + CTRL_STATUS); + pc_ready = ctrl_status & CTRL_STATUS_PC_READY; + idle_status = ctrl_status & BIT(30); + if (pc_ready) + return 0; + + wfi_status = readl(core->reg_base + WRAPPER_TZ_CPU_STATUS); + wfi_status &= BIT(0); + if (!wfi_status || !idle_status) + goto skip_power_off; + + ret = core->hfi_ops->sys_pc_prep(core); + if (ret) + goto skip_power_off; + + ret = readl_poll_timeout(core->reg_base + CTRL_STATUS, val, + val & CTRL_STATUS_PC_READY, 250, 2500); + if (ret) + goto skip_power_off; + + ret = readl_poll_timeout(core->reg_base + WRAPPER_TZ_CPU_STATUS, + val, val & BIT(0), 250, 2500); + if (ret) + goto skip_power_off; + + return 0; + +skip_power_off: + ctrl_status = readl(core->reg_base + CTRL_STATUS); + wfi_status = readl(core->reg_base + WRAPPER_TZ_CPU_STATUS); + wfi_status &= BIT(0); + dev_err(core->dev, "skip power collapse, wfi=%#x, idle=%#x, pcr=%#x, ctrl=%#x)\n", + wfi_status, idle_status, pc_ready, ctrl_status); + + return -EAGAIN; +} + +static int iris_vpu_power_off_controller(struct iris_core *core) +{ + u32 val = 0; + int ret; + + writel(MSK_SIGNAL_FROM_TENSILICA | MSK_CORE_POWER_ON, core->reg_base + CPU_CS_X2RPMH); + + writel(REQ_POWER_DOWN_PREP, core->reg_base + AON_WRAPPER_MVP_NOC_LPI_CONTROL); + + ret = readl_poll_timeout(core->reg_base + AON_WRAPPER_MVP_NOC_LPI_STATUS, + val, val & BIT(0), 200, 2000); + if (ret) + goto disable_power; + + writel(REQ_POWER_DOWN_PREP, core->reg_base + WRAPPER_IRIS_CPU_NOC_LPI_CONTROL); + + ret = readl_poll_timeout(core->reg_base + WRAPPER_IRIS_CPU_NOC_LPI_STATUS, + val, val & BIT(0), 200, 2000); + if (ret) + goto disable_power; + + writel(0x0, core->reg_base + WRAPPER_DEBUG_BRIDGE_LPI_CONTROL); + + ret = readl_poll_timeout(core->reg_base + WRAPPER_DEBUG_BRIDGE_LPI_STATUS, + val, val == 0, 200, 2000); + if (ret) + goto disable_power; + + writel(CTL_AXI_CLK_HALT | CTL_CLK_HALT, + core->reg_base + WRAPPER_TZ_CTL_AXI_CLOCK_CONFIG); + writel(RESET_HIGH, core->reg_base + WRAPPER_TZ_QNS4PDXFIFO_RESET); + writel(0x0, core->reg_base + WRAPPER_TZ_QNS4PDXFIFO_RESET); + writel(0x0, core->reg_base + WRAPPER_TZ_CTL_AXI_CLOCK_CONFIG); + +disable_power: + iris_disable_unprepare_clock(core, IRIS_CTRL_CLK); + iris_disable_unprepare_clock(core, IRIS_AXI_CLK); + iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_CTRL_POWER_DOMAIN]); + + return 0; +} + +void iris_vpu_power_off_hw(struct iris_core *core) +{ + dev_pm_genpd_set_hwmode(core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN], false); + iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN]); + iris_disable_unprepare_clock(core, IRIS_HW_CLK); +} + +void iris_vpu_power_off(struct iris_core *core) +{ + dev_pm_opp_set_rate(core->dev, 0); + core->iris_platform_data->vpu_ops->power_off_hw(core); + iris_vpu_power_off_controller(core); + iris_unset_icc_bw(core); + + if (!iris_vpu_watchdog(core, core->intr_status)) + disable_irq_nosync(core->irq); +} + +static int iris_vpu_power_on_controller(struct iris_core *core) +{ + u32 rst_tbl_size = core->iris_platform_data->clk_rst_tbl_size; + int ret; + + ret = iris_enable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_CTRL_POWER_DOMAIN]); + if (ret) + return ret; + + ret = reset_control_bulk_reset(rst_tbl_size, core->resets); + if (ret) + goto err_disable_power; + + ret = iris_prepare_enable_clock(core, IRIS_AXI_CLK); + if (ret) + goto err_disable_power; + + ret = iris_prepare_enable_clock(core, IRIS_CTRL_CLK); + if (ret) + goto err_disable_clock; + + return 0; + +err_disable_clock: + iris_disable_unprepare_clock(core, IRIS_AXI_CLK); +err_disable_power: + iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_CTRL_POWER_DOMAIN]); + + return ret; +} + +static int iris_vpu_power_on_hw(struct iris_core *core) +{ + int ret; + + ret = iris_enable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN]); + if (ret) + return ret; + + ret = iris_prepare_enable_clock(core, IRIS_HW_CLK); + if (ret) + goto err_disable_power; + + ret = dev_pm_genpd_set_hwmode(core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN], true); + if (ret) + goto err_disable_clock; + + return 0; + +err_disable_clock: + iris_disable_unprepare_clock(core, IRIS_HW_CLK); +err_disable_power: + iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN]); + + return ret; +} + +int iris_vpu_power_on(struct iris_core *core) +{ + u32 freq; + int ret; + + ret = iris_set_icc_bw(core, INT_MAX); + if (ret) + goto err; + + ret = iris_vpu_power_on_controller(core); + if (ret) + goto err_unvote_icc; + + ret = iris_vpu_power_on_hw(core); + if (ret) + goto err_power_off_ctrl; + + freq = core->power.clk_freq ? core->power.clk_freq : + (u32)ULONG_MAX; + + dev_pm_opp_set_rate(core->dev, freq); + + core->iris_platform_data->set_preset_registers(core); + + iris_vpu_interrupt_init(core); + core->intr_status = 0; + enable_irq(core->irq); + + return 0; + +err_power_off_ctrl: + iris_vpu_power_off_controller(core); +err_unvote_icc: + iris_unset_icc_bw(core); +err: + dev_err(core->dev, "power on failed\n"); + + return ret; +} |