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mfd : Copy the db8500 gic setting to the prcmu
In the case we go to the retention mode, we decoupled the gic in order to have the A9 core to reach a stable WFI state. But we want the prcmu to wake up the A9 when the gic has a pending irq which is done by copying the gic settings to the to the prcmu. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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@ -883,6 +883,26 @@ bool db8500_prcmu_gic_pending_irq(void)
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return false;
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}
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/*
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* This function copies the gic SPI settings to the prcmu in order to
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* monitor them and abort/finish the retention/off sequence or state.
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*/
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int db8500_prcmu_copy_gic_settings(void)
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{
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u32 er; /* Enable register */
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void __iomem *dist_base = __io_address(U8500_GIC_DIST_BASE);
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int i;
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/* We skip the STI and PPI */
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for (i = 0; i < PRCMU_GIC_NUMBER_REGS - 1; i++) {
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er = readl_relaxed(dist_base +
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GIC_DIST_ENABLE_SET + (i + 1) * 4);
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writel(er, PRCM_ARMITMSK31TO0 + i * 4);
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}
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return 0;
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}
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/* This function should only be called while mb0_transfer.lock is held. */
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static void config_wakeups(void)
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{
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@ -582,6 +582,7 @@ int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll);
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u8 db8500_prcmu_get_power_state_result(void);
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int db8500_prcmu_gic_decouple(void);
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int db8500_prcmu_gic_recouple(void);
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int db8500_prcmu_copy_gic_settings(void);
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bool db8500_prcmu_gic_pending_irq(void);
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void db8500_prcmu_enable_wakeups(u32 wakeups);
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int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state);
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@ -305,6 +305,14 @@ static inline bool prcmu_gic_pending_irq(void)
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return db8500_prcmu_gic_pending_irq();
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}
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static inline int prcmu_copy_gic_settings(void)
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{
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if (cpu_is_u5500())
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return -EINVAL;
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else
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return db8500_prcmu_copy_gic_settings();
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}
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static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
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{
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if (cpu_is_u5500())
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