[Blackfin] arch: hook up set_irq_wake in Blackfin's irq code (cfefe3c6) · Commits · e / devices / android_kernel_fairphone_FP4

arch/blackfin/Kconfig

+29 −20

Original line number	Diff line number	Diff line
		@@ -904,29 +904,38 @@ config ARCH_SUSPEND_POSSIBLE
		depends on !SMP

		choice
		prompt "Select PM Wakeup Event Source"
		default PM_WAKEUP_GPIO_BY_SIC_IWR
		prompt "Default Power Saving Mode"
		depends on PM
		help
		If you have a GPIO already configured as input with the corresponding PORTx_MASK
		bit set - "Specify Wakeup Event by SIC_IWR value"
		default PM_BFIN_SLEEP_DEEPER
		config PM_BFIN_SLEEP_DEEPER
		bool "Sleep Deeper"
		help
		Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic
		power dissipation by disabling the clock to the processor core (CCLK).
		Furthermore, Standby sets the internal power supply voltage (VDDINT)
		to 0.85 V to provide the greatest power savings, while preserving the
		processor state.
		The PLL and system clock (SCLK) continue to operate at a very low
		frequency of about 3.3 MHz. To preserve data integrity in the SDRAM,
		the SDRAM is put into Self Refresh Mode. Typically an external event
		such as GPIO interrupt or RTC activity wakes up the processor.
		Various Peripherals such as UART, SPORT, PPI may not function as
		normal during Sleep Deeper, due to the reduced SCLK frequency.
		When in the sleep mode, system DMA access to L1 memory is not supported.

		config PM_BFIN_SLEEP
		bool "Sleep"
		help
		Sleep Mode (High Power Savings) - The sleep mode reduces power
		dissipation by disabling the clock to the processor core (CCLK).
		The PLL and system clock (SCLK), however, continue to operate in
		this mode. Typically an external event or RTC activity will wake
		up the processor. When in the sleep mode,
		system DMA access to L1 memory is not supported.
		endchoice

		config PM_WAKEUP_GPIO_BY_SIC_IWR
		bool "Specify Wakeup Event by SIC_IWR value"
		config PM_WAKEUP_BY_GPIO
		bool "Cause Wakeup Event by GPIO"
		config PM_WAKEUP_GPIO_API
		bool "Configure Wakeup Event by PM GPIO API"

		endchoice

		config PM_WAKEUP_SIC_IWR
		hex "Wakeup Events (SIC_IWR)"
		depends on PM_WAKEUP_GPIO_BY_SIC_IWR
		default 0x8 if (BF537 \|\| BF536 \|\| BF534)
		default 0x80 if (BF533 \|\| BF532 \|\| BF531)
		default 0x80 if (BF54x)
		default 0x80 if (BF52x)

		config PM_WAKEUP_GPIO_NUMBER
		int "Wakeup GPIO number"

arch/blackfin/kernel/bfin_gpio.c

+8 −12

Original line number	Diff line number	Diff line
		@@ -186,7 +186,7 @@ static struct str_ident {
		char name[RESOURCE_LABEL_SIZE];
		} str_ident[MAX_RESOURCES];

		#ifdef CONFIG_PM
		#if defined(CONFIG_PM) && !defined(CONFIG_BF54x)
		static unsigned short wakeup_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
		static unsigned char wakeup_flags_map[MAX_BLACKFIN_GPIOS];
		static struct gpio_port_s gpio_bank_saved[gpio_bank(MAX_BLACKFIN_GPIOS)];
		@@ -696,9 +696,8 @@ static int bfin_gpio_wakeup_type(unsigned gpio, unsigned char type)
		return 0;
		}

		u32 gpio_pm_setup(void)
		u32 bfin_pm_setup(void)
		{
		u32 sic_iwr = 0;
		u16 bank, mask, i, gpio;

		for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		@@ -723,7 +722,8 @@ u32 gpio_pm_setup(void)
		gpio = i;

		while (mask) {
		if (mask & 1) {
		if ((mask & 1) && (wakeup_flags_map[gpio] !=
		PM_WAKE_IGNORE)) {
		reserved_gpio_map[gpio_bank(gpio)] \|=
		gpio_bit(gpio);
		bfin_gpio_wakeup_type(gpio,
		@@ -734,21 +734,17 @@ u32 gpio_pm_setup(void)
		mask >>= 1;
		}

		sic_iwr \|= 1 <<
		(sic_iwr_irqs[bank] - (IRQ_CORETMR + 1));
		bfin_internal_set_wake(sic_iwr_irqs[bank], 1);
		gpio_bankb[bank]->maskb_set = wakeup_map[gpio_bank(i)];
		}
		}

		AWA_DUMMY_READ(maskb_set);

		if (sic_iwr)
		return sic_iwr;
		else
		return IWR_ENABLE_ALL;
		return 0;
		}

		void gpio_pm_restore(void)
		void bfin_pm_restore(void)
		{
		u16 bank, mask, i;

		@@ -768,7 +764,7 @@ void gpio_pm_restore(void)

		reserved_gpio_map[bank] =
		gpio_bank_saved[bank].reserved;

		bfin_internal_set_wake(sic_iwr_irqs[bank], 0);
		}

		gpio_bankb[bank]->maskb = gpio_bank_saved[bank].maskb;

arch/blackfin/mach-common/dpmc.S

+31 −1

Original line number	Diff line number	Diff line
		@@ -191,6 +191,9 @@ ENTRY(_sleep_mode)
		call _test_pll_locked;

		R0 = IWR_ENABLE(0);
		R1 = IWR_DISABLE_ALL;
		R2 = IWR_DISABLE_ALL;

		call _set_sic_iwr;

		P0.H = hi(PLL_CTL);
		@@ -237,6 +240,10 @@ ENTRY(_deep_sleep)

		CLI R4;

		R0 = IWR_ENABLE(0);
		R1 = IWR_DISABLE_ALL;
		R2 = IWR_DISABLE_ALL;

		call _set_sic_iwr;

		call _set_dram_srfs;
		@@ -261,6 +268,9 @@ ENTRY(_deep_sleep)
		call _test_pll_locked;

		R0 = IWR_ENABLE(0);
		R1 = IWR_DISABLE_ALL;
		R2 = IWR_DISABLE_ALL;

		call _set_sic_iwr;

		P0.H = hi(PLL_CTL);
		@@ -286,7 +296,13 @@ ENTRY(_sleep_deeper)
		CLI R4;

		P3 = R0;
		P4 = R1;
		P5 = R2;

		R0 = IWR_ENABLE(0);
		R1 = IWR_DISABLE_ALL;
		R2 = IWR_DISABLE_ALL;

		call _set_sic_iwr;
		call _set_dram_srfs; /* Set SDRAM Self Refresh */

		@@ -327,6 +343,8 @@ ENTRY(_sleep_deeper)
		call _test_pll_locked;

		R0 = P3;
		R1 = P4;
		R3 = P5;
		call _set_sic_iwr; /* Set Awake from IDLE */

		P0.H = hi(PLL_CTL);
		@@ -340,6 +358,9 @@ ENTRY(_sleep_deeper)
		call _test_pll_locked;

		R0 = IWR_ENABLE(0);
		R1 = IWR_DISABLE_ALL;
		R2 = IWR_DISABLE_ALL;

		call _set_sic_iwr; /* Set Awake from IDLE PLL */

		P0.H = hi(VR_CTL);
		@@ -417,14 +438,23 @@ ENTRY(_unset_dram_srfs)
		RTS;

		ENTRY(_set_sic_iwr)
		#if defined(CONFIG_BF54x) \|\| defined(CONFIG_BF52x)
		#if defined(CONFIG_BF54x) \|\| defined(CONFIG_BF52x) \|\| defined(CONFIG_BF561)
		P0.H = hi(SIC_IWR0);
		P0.L = lo(SIC_IWR0);
		P1.H = hi(SIC_IWR1);
		P1.L = lo(SIC_IWR1);
		[P1] = R1;
		#if defined(CONFIG_BF54x)
		P1.H = hi(SIC_IWR2);
		P1.L = lo(SIC_IWR2);
		[P1] = R2;
		#endif
		#else
		P0.H = hi(SIC_IWR);
		P0.L = lo(SIC_IWR);
		#endif
		[P0] = R0;

		SSYNC;
		RTS;

arch/blackfin/mach-common/ints-priority.c

+121 −5

Original line number	Diff line number	Diff line
		/*
		* File: arch/blackfin/mach-common/ints-priority-sc.c
		* File: arch/blackfin/mach-common/ints-priority.c
		* Based on:
		* Author:
		*
		@@ -13,7 +13,7 @@
		* 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
		* 2003 Metrowerks/Motorola
		* 2003 Bas Vermeulen <bas@buyways.nl>
		* Copyright 2004-2007 Analog Devices Inc.
		* Copyright 2004-2008 Analog Devices Inc.
		*
		* Bugs: Enter bugs at http://blackfin.uclinux.org/
		*
		@@ -69,6 +69,10 @@ unsigned long irq_flags = 0x1f;
		/* The number of spurious interrupts */
		atomic_t num_spurious;

		#ifdef CONFIG_PM
		unsigned long bfin_sic_iwr[3]; /* Up to 3 SIC_IWRx registers */
		#endif

		struct ivgx {
		/* irq number for request_irq, available in mach-bf533/irq.h */
		unsigned int irqno;
		@@ -178,6 +182,27 @@ static void bfin_internal_unmask_irq(unsigned int irq)
		SSYNC();
		}

		#ifdef CONFIG_PM
		int bfin_internal_set_wake(unsigned int irq, unsigned int state)
		{
		unsigned bank, bit;
		unsigned long flags;
		bank = (irq - (IRQ_CORETMR + 1)) / 32;
		bit = (irq - (IRQ_CORETMR + 1)) % 32;

		local_irq_save(flags);

		if (state)
		bfin_sic_iwr[bank] \|= (1 << bit);
		else
		bfin_sic_iwr[bank] &= ~(1 << bit);

		local_irq_restore(flags);

		return 0;
		}
		#endif

		static struct irq_chip bfin_core_irqchip = {
		.ack = ack_noop,
		.mask = bfin_core_mask_irq,
		@@ -188,6 +213,9 @@ static struct irq_chip bfin_internal_irqchip = {
		.ack = ack_noop,
		.mask = bfin_internal_mask_irq,
		.unmask = bfin_internal_unmask_irq,
		#ifdef CONFIG_PM
		.set_wake = bfin_internal_set_wake,
		#endif
		};

		#ifdef BF537_GENERIC_ERROR_INT_DEMUX
		@@ -434,6 +462,20 @@ static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
		return 0;
		}

		#ifdef CONFIG_PM
		int bfin_gpio_set_wake(unsigned int irq, unsigned int state)
		{
		unsigned gpio = irq_to_gpio(irq);

		if (state)
		gpio_pm_wakeup_request(gpio, PM_WAKE_IGNORE);
		else
		gpio_pm_wakeup_free(gpio);

		return 0;
		}
		#endif

		static struct irq_chip bfin_gpio_irqchip = {
		.ack = bfin_gpio_ack_irq,
		.mask = bfin_gpio_mask_irq,
		@@ -441,7 +483,10 @@ static struct irq_chip bfin_gpio_irqchip = {
		.unmask = bfin_gpio_unmask_irq,
		.set_type = bfin_gpio_irq_type,
		.startup = bfin_gpio_irq_startup,
		.shutdown = bfin_gpio_irq_shutdown
		.shutdown = bfin_gpio_irq_shutdown,
		#ifdef CONFIG_PM
		.set_wake = bfin_gpio_set_wake,
		#endif
		};

		static void bfin_demux_gpio_irq(unsigned int inta_irq,
		@@ -487,7 +532,7 @@ static void bfin_demux_gpio_irq(unsigned int inta_irq,
		}

		if (search) {
		for (i = 0; i < MAX_BLACKFIN_GPIOS; i += 16) {
		for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		irq += i;

		mask = get_gpiop_data(i) &
		@@ -763,6 +808,74 @@ static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
		return 0;
		}

		#ifdef CONFIG_PM
		u32 pint_saved_masks[NR_PINT_SYS_IRQS];
		u32 pint_wakeup_masks[NR_PINT_SYS_IRQS];

		int bfin_gpio_set_wake(unsigned int irq, unsigned int state)
		{
		u32 pint_irq;
		u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
		u32 bank = PINT_2_BANK(pint_val);
		u32 pintbit = PINT_BIT(pint_val);

		switch (bank) {
		case 0:
		pint_irq = IRQ_PINT0;
		break;
		case 2:
		pint_irq = IRQ_PINT2;
		break;
		case 3:
		pint_irq = IRQ_PINT3;
		break;
		case 1:
		pint_irq = IRQ_PINT1;
		break;
		default:
		return -EINVAL;
		}

		bfin_internal_set_wake(pint_irq, state);

		if (state)
		pint_wakeup_masks[bank] \|= pintbit;
		else
		pint_wakeup_masks[bank] &= ~pintbit;

		return 0;
		}

		u32 bfin_pm_setup(void)
		{
		u32 val, i;

		for (i = 0; i < NR_PINT_SYS_IRQS; i++) {
		val = pint[i]->mask_clear;
		pint_saved_masks[i] = val;
		if (val ^ pint_wakeup_masks[i]) {
		pint[i]->mask_clear = val;
		pint[i]->mask_set = pint_wakeup_masks[i];
		}
		}

		return 0;
		}

		void bfin_pm_restore(void)
		{
		u32 i, val;

		for (i = 0; i < NR_PINT_SYS_IRQS; i++) {
		val = pint_saved_masks[i];
		if (val ^ pint_wakeup_masks[i]) {
		pint[i]->mask_clear = pint[i]->mask_clear;
		pint[i]->mask_set = val;
		}
		}
		}
		#endif

		static struct irq_chip bfin_gpio_irqchip = {
		.ack = bfin_gpio_ack_irq,
		.mask = bfin_gpio_mask_irq,
		@@ -770,7 +883,10 @@ static struct irq_chip bfin_gpio_irqchip = {
		.unmask = bfin_gpio_unmask_irq,
		.set_type = bfin_gpio_irq_type,
		.startup = bfin_gpio_irq_startup,
		.shutdown = bfin_gpio_irq_shutdown
		.shutdown = bfin_gpio_irq_shutdown,
		#ifdef CONFIG_PM
		.set_wake = bfin_gpio_set_wake,
		#endif
		};

		static void bfin_demux_gpio_irq(unsigned int inta_irq,

arch/blackfin/mach-common/pm.c

+16 −28

Original line number	Diff line number	Diff line
		@@ -4,7 +4,7 @@
		* Author: Cliff Brake <cbrake@accelent.com> Copyright (c) 2001
		*
		* Created: 2001
		* Description: Power management for the bfin
		* Description: Blackfin power management
		*
		* Modified: Nicolas Pitre - PXA250 support
		* Copyright (c) 2002 Monta Vista Software, Inc.
		@@ -12,7 +12,7 @@
		* Copyright (c) 2002 Monta Vista Software, Inc.
		* Dirk Behme <dirk.behme@de.bosch.com> - OMAP1510/1610
		* Copyright 2004
		* Copyright 2004-2006 Analog Devices Inc.
		* Copyright 2004-2008 Analog Devices Inc.
		*
		* Bugs: Enter bugs at http://blackfin.uclinux.org/
		*
		@@ -67,33 +67,20 @@ void bfin_pm_suspend_standby_enter(void)
		gpio_pm_wakeup_request(CONFIG_PM_WAKEUP_GPIO_NUMBER, WAKEUP_TYPE);
		#endif

		#if defined(CONFIG_PM_WAKEUP_BY_GPIO) \|\| defined(CONFIG_PM_WAKEUP_GPIO_API)
		{
		u32 flags;

		local_irq_save(flags);
		bfin_pm_setup();

		sleep_deeper(gpio_pm_setup()); /Goto Sleep/

		gpio_pm_restore();

		#if defined(CONFIG_BF54x) \|\| defined(CONFIG_BF52x)
		bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
		bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
		# ifdef CONFIG_BF54x
		bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
		# endif
		#ifdef CONFIG_PM_BFIN_SLEEP_DEEPER
		sleep_deeper(bfin_sic_iwr[0], bfin_sic_iwr[1], bfin_sic_iwr[2]);
		#else
		bfin_write_SIC_IWR(IWR_ENABLE_ALL);
		sleep_mode(bfin_sic_iwr[0], bfin_sic_iwr[1], bfin_sic_iwr[2]);
		#endif

		local_irq_restore(flags);
		}
		#endif
		bfin_pm_restore();

		#if defined(CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR)
		sleep_deeper(CONFIG_PM_WAKEUP_SIC_IWR);
		# if defined(CONFIG_BF54x) \|\| defined(CONFIG_BF52x)
		#if defined(CONFIG_BF54x) \|\| defined(CONFIG_BF52x) \|\| defined(CONFIG_BF561)
		bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
		bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
		# ifdef CONFIG_BF54x
		@@ -102,7 +89,8 @@ void bfin_pm_suspend_standby_enter(void)
		#else
		bfin_write_SIC_IWR(IWR_ENABLE_ALL);
		#endif
		#endif /* CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR */

		local_irq_restore(flags);
		}

		/*