From 4cb5d9eca143f7fbf8cc457be19a91914f978a00 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 10 Apr 2019 10:47:28 +0200 Subject: firmware: Move Trusted Foundations support Move the Trusted Foundations support out of arch/arm/firmware and into drivers/firmware where most other firmware support implementations are located. Signed-off-by: Thierry Reding --- arch/arm/Kconfig | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 054ead960f98..f006b3c69247 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -899,8 +899,6 @@ config PLAT_PXA config PLAT_VERSATILE bool -source "arch/arm/firmware/Kconfig" - source "arch/arm/mm/Kconfig" config IWMMXT -- cgit v1.2.3 From 98ac0cc270b717c49a49787fe7c42041123290bb Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 29 Dec 2018 14:30:27 +0100 Subject: ARM: ixp4xx: Convert to MULTI_IRQ_HANDLER This rewrites the IXP4xx to use MULTI_IRQ_HANDLER and create an irqdomain for the irqchip in the platform. We convert the timer to request the interrupt like any other driver in the process. We bump all IRQs to 16+offset to avoid using IRQ 0 and set NR_IRQS to 512 (the default for most systems). This conveniently fits with the first 16 IRQs being pre-allocated when using SPARSE_IRQ. This is a prerequisite for SPARSE_IRQ and DT boot. Signed-off-by: Linus Walleij --- arch/arm/Kconfig | 1 + arch/arm/mach-ixp4xx/common.c | 109 +++++++++++++++++------- arch/arm/mach-ixp4xx/include/mach/entry-macro.S | 41 --------- arch/arm/mach-ixp4xx/include/mach/irqs.h | 95 ++++++++++----------- 4 files changed, 126 insertions(+), 120 deletions(-) delete mode 100644 arch/arm/mach-ixp4xx/include/mach/entry-macro.S (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 054ead960f98..eb27554aa04f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -433,6 +433,7 @@ config ARCH_IXP4XX select CPU_XSCALE select DMABOUNCE if PCI select GENERIC_CLOCKEVENTS + select GENERIC_IRQ_MULTI_HANDLER select GPIOLIB select HAVE_PCI select NEED_MACH_IO_H diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index 846e033c56fa..58a1b851425e 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -31,12 +31,14 @@ #include #include #include +#include #include #include #include #include #include #include +#include #include #include #include @@ -54,6 +56,7 @@ (IXP4XX_OST_RELOAD_MASK + 1) * HZ) * \ (IXP4XX_OST_RELOAD_MASK + 1) +static struct irq_domain *ixp4xx_irqdomain; static void __init ixp4xx_clocksource_init(void); static void __init ixp4xx_clockevent_init(void); static struct clock_event_device clockevent_ixp4xx; @@ -166,16 +169,17 @@ static int ixp4xx_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) static int ixp4xx_set_irq_type(struct irq_data *d, unsigned int type) { - int line = irq2gpio[d->irq]; + int line = irq2gpio[d->hwirq]; u32 int_style; enum ixp4xx_irq_type irq_type; volatile u32 *int_reg; /* * Only for GPIO IRQs + * all other IRQs are simply active low */ if (line < 0) - return -EINVAL; + return 0; switch (type){ case IRQ_TYPE_EDGE_BOTH: @@ -203,9 +207,9 @@ static int ixp4xx_set_irq_type(struct irq_data *d, unsigned int type) } if (irq_type == IXP4XX_IRQ_EDGE) - ixp4xx_irq_edge |= (1 << d->irq); + ixp4xx_irq_edge |= (1 << d->hwirq); else - ixp4xx_irq_edge &= ~(1 << d->irq); + ixp4xx_irq_edge &= ~(1 << d->hwirq); if (line >= 8) { /* pins 8-15 */ line -= 8; @@ -224,22 +228,22 @@ static int ixp4xx_set_irq_type(struct irq_data *d, unsigned int type) *int_reg |= (int_style << (line * IXP4XX_GPIO_STYLE_SIZE)); /* Configure the line as an input */ - gpio_line_config(irq2gpio[d->irq], IXP4XX_GPIO_IN); + gpio_line_config(irq2gpio[d->hwirq], IXP4XX_GPIO_IN); return 0; } static void ixp4xx_irq_mask(struct irq_data *d) { - if ((cpu_is_ixp46x() || cpu_is_ixp43x()) && d->irq >= 32) - *IXP4XX_ICMR2 &= ~(1 << (d->irq - 32)); + if ((cpu_is_ixp46x() || cpu_is_ixp43x()) && d->hwirq >= 32) + *IXP4XX_ICMR2 &= ~(1 << (d->hwirq - 32)); else - *IXP4XX_ICMR &= ~(1 << d->irq); + *IXP4XX_ICMR &= ~(1 << d->hwirq); } static void ixp4xx_irq_ack(struct irq_data *d) { - int line = (d->irq < 32) ? irq2gpio[d->irq] : -1; + int line = (d->hwirq < 32) ? irq2gpio[d->hwirq] : -1; if (line >= 0) *IXP4XX_GPIO_GPISR = (1 << line); @@ -251,13 +255,13 @@ static void ixp4xx_irq_ack(struct irq_data *d) */ static void ixp4xx_irq_unmask(struct irq_data *d) { - if (!(ixp4xx_irq_edge & (1 << d->irq))) + if (!(ixp4xx_irq_edge & (1 << d->hwirq))) ixp4xx_irq_ack(d); - if ((cpu_is_ixp46x() || cpu_is_ixp43x()) && d->irq >= 32) - *IXP4XX_ICMR2 |= (1 << (d->irq - 32)); + if ((cpu_is_ixp46x() || cpu_is_ixp43x()) && d->hwirq >= 32) + *IXP4XX_ICMR2 |= (1 << (d->hwirq - 32)); else - *IXP4XX_ICMR |= (1 << d->irq); + *IXP4XX_ICMR |= (1 << d->hwirq); } static struct irq_chip ixp4xx_irq_chip = { @@ -268,9 +272,50 @@ static struct irq_chip ixp4xx_irq_chip = { .irq_set_type = ixp4xx_set_irq_type, }; +asmlinkage void __exception_irq_entry ixp4xx_handle_irq(struct pt_regs *regs) +{ + unsigned long status; + int i; + + status = *IXP4XX_ICIP; + + for_each_set_bit(i, &status, 32) + handle_domain_irq(ixp4xx_irqdomain, i, regs); + + /* + * IXP465/IXP435 has an upper IRQ status register + */ + if ((cpu_is_ixp46x() || cpu_is_ixp43x())) { + status = *IXP4XX_ICIP2; + for_each_set_bit(i, &status, 32) + handle_domain_irq(ixp4xx_irqdomain, i + 32, regs); + } +} + +static int ixp4xx_irqdomain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hwirq) +{ + irq_set_chip_data(irq, &ixp4xx_irq_chip); + irq_set_chip_and_handler(irq, &ixp4xx_irq_chip, handle_level_irq); + irq_set_probe(irq); + + return 0; +} + +static void ixp4xx_irqdomain_unmap(struct irq_domain *d, unsigned int irq) +{ + irq_set_chip_and_handler(irq, NULL, NULL); + irq_set_chip_data(irq, NULL); +} + +static const struct irq_domain_ops ixp4xx_irqdomain_ops = { + .map = ixp4xx_irqdomain_map, + .unmap = ixp4xx_irqdomain_unmap, +}; + void __init ixp4xx_init_irq(void) { - int i = 0; + int nr_irqs; /* * ixp4xx does not implement the XScale PWRMODE register @@ -290,14 +335,21 @@ void __init ixp4xx_init_irq(void) /* Disable upper 32 interrupts */ *IXP4XX_ICMR2 = 0x00; + + nr_irqs = 64; + } else { + nr_irqs = 32; } - /* Default to all level triggered */ - for(i = 0; i < NR_IRQS; i++) { - irq_set_chip_and_handler(i, &ixp4xx_irq_chip, - handle_level_irq); - irq_clear_status_flags(i, IRQ_NOREQUEST); + ixp4xx_irqdomain = irq_domain_add_simple(NULL, nr_irqs, IRQ_IXP4XX_BASE, + &ixp4xx_irqdomain_ops, + NULL); + if (!ixp4xx_irqdomain) { + pr_crit("can not add primary irqdomain\n"); + return; } + + set_handle_irq(ixp4xx_handle_irq); } @@ -319,13 +371,6 @@ static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction ixp4xx_timer_irq = { - .name = "timer1", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = ixp4xx_timer_interrupt, - .dev_id = &clockevent_ixp4xx, -}; - void __init ixp4xx_timer_init(void) { /* Reset/disable counter */ @@ -337,9 +382,6 @@ void __init ixp4xx_timer_init(void) /* Reset time-stamp counter */ *IXP4XX_OSTS = 0; - /* Connect the interrupt handler and enable the interrupt */ - setup_irq(IRQ_IXP4XX_TIMER1, &ixp4xx_timer_irq); - ixp4xx_clocksource_init(); ixp4xx_clockevent_init(); } @@ -574,7 +616,16 @@ static struct clock_event_device clockevent_ixp4xx = { static void __init ixp4xx_clockevent_init(void) { + int ret; + clockevent_ixp4xx.cpumask = cpumask_of(0); + clockevent_ixp4xx.irq = IRQ_IXP4XX_TIMER1; + ret = request_irq(IRQ_IXP4XX_TIMER1, ixp4xx_timer_interrupt, + IRQF_TIMER, "IXP4XX-TIMER1", &clockevent_ixp4xx); + if (ret) { + pr_crit("no timer IRQ\n"); + return; + } clockevents_config_and_register(&clockevent_ixp4xx, IXP4XX_TIMER_FREQ, 0xf, 0xfffffffe); } diff --git a/arch/arm/mach-ixp4xx/include/mach/entry-macro.S b/arch/arm/mach-ixp4xx/include/mach/entry-macro.S deleted file mode 100644 index 79adf83e2c3d..000000000000 --- a/arch/arm/mach-ixp4xx/include/mach/entry-macro.S +++ /dev/null @@ -1,41 +0,0 @@ -/* - * arch/arm/mach-ixp4xx/include/mach/entry-macro.S - * - * Low-level IRQ helper macros for IXP4xx-based platforms - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ -#include - - .macro get_irqnr_preamble, base, tmp - .endm - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET) - ldr \irqstat, [\irqstat] @ get interrupts - cmp \irqstat, #0 - beq 1001f @ upper IRQ? - clz \irqnr, \irqstat - mov \base, #31 - sub \irqnr, \base, \irqnr - b 1002f @ lower IRQ being - @ handled - -1001: - /* - * IXP465/IXP435 has an upper IRQ status register - */ -#if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X) - ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET) - ldr \irqstat, [\irqstat] @ get upper interrupts - mov \irqnr, #63 - clz \irqstat, \irqstat - cmp \irqstat, #32 - subne \irqnr, \irqnr, \irqstat -#endif -1002: - .endm - - diff --git a/arch/arm/mach-ixp4xx/include/mach/irqs.h b/arch/arm/mach-ixp4xx/include/mach/irqs.h index 7e6d4cce7c27..dadcd4ddb0a9 100644 --- a/arch/arm/mach-ixp4xx/include/mach/irqs.h +++ b/arch/arm/mach-ixp4xx/include/mach/irqs.h @@ -15,60 +15,55 @@ #ifndef _ARCH_IXP4XX_IRQS_H_ #define _ARCH_IXP4XX_IRQS_H_ -#define IRQ_IXP4XX_NPEA 0 -#define IRQ_IXP4XX_NPEB 1 -#define IRQ_IXP4XX_NPEC 2 -#define IRQ_IXP4XX_QM1 3 -#define IRQ_IXP4XX_QM2 4 -#define IRQ_IXP4XX_TIMER1 5 -#define IRQ_IXP4XX_GPIO0 6 -#define IRQ_IXP4XX_GPIO1 7 -#define IRQ_IXP4XX_PCI_INT 8 -#define IRQ_IXP4XX_PCI_DMA1 9 -#define IRQ_IXP4XX_PCI_DMA2 10 -#define IRQ_IXP4XX_TIMER2 11 -#define IRQ_IXP4XX_USB 12 -#define IRQ_IXP4XX_UART2 13 -#define IRQ_IXP4XX_TIMESTAMP 14 -#define IRQ_IXP4XX_UART1 15 -#define IRQ_IXP4XX_WDOG 16 -#define IRQ_IXP4XX_AHB_PMU 17 -#define IRQ_IXP4XX_XSCALE_PMU 18 -#define IRQ_IXP4XX_GPIO2 19 -#define IRQ_IXP4XX_GPIO3 20 -#define IRQ_IXP4XX_GPIO4 21 -#define IRQ_IXP4XX_GPIO5 22 -#define IRQ_IXP4XX_GPIO6 23 -#define IRQ_IXP4XX_GPIO7 24 -#define IRQ_IXP4XX_GPIO8 25 -#define IRQ_IXP4XX_GPIO9 26 -#define IRQ_IXP4XX_GPIO10 27 -#define IRQ_IXP4XX_GPIO11 28 -#define IRQ_IXP4XX_GPIO12 29 -#define IRQ_IXP4XX_SW_INT1 30 -#define IRQ_IXP4XX_SW_INT2 31 -#define IRQ_IXP4XX_USB_HOST 32 -#define IRQ_IXP4XX_I2C 33 -#define IRQ_IXP4XX_SSP 34 -#define IRQ_IXP4XX_TSYNC 35 -#define IRQ_IXP4XX_EAU_DONE 36 -#define IRQ_IXP4XX_SHA_DONE 37 -#define IRQ_IXP4XX_SWCP_PE 58 -#define IRQ_IXP4XX_QM_PE 60 -#define IRQ_IXP4XX_MCU_ECC 61 -#define IRQ_IXP4XX_EXP_PE 62 +#define IRQ_IXP4XX_BASE 16 + +#define IRQ_IXP4XX_NPEA (IRQ_IXP4XX_BASE + 0) +#define IRQ_IXP4XX_NPEB (IRQ_IXP4XX_BASE + 1) +#define IRQ_IXP4XX_NPEC (IRQ_IXP4XX_BASE + 2) +#define IRQ_IXP4XX_QM1 (IRQ_IXP4XX_BASE + 3) +#define IRQ_IXP4XX_QM2 (IRQ_IXP4XX_BASE + 4) +#define IRQ_IXP4XX_TIMER1 (IRQ_IXP4XX_BASE + 5) +#define IRQ_IXP4XX_GPIO0 (IRQ_IXP4XX_BASE + 6) +#define IRQ_IXP4XX_GPIO1 (IRQ_IXP4XX_BASE + 7) +#define IRQ_IXP4XX_PCI_INT (IRQ_IXP4XX_BASE + 8) +#define IRQ_IXP4XX_PCI_DMA1 (IRQ_IXP4XX_BASE + 9) +#define IRQ_IXP4XX_PCI_DMA2 (IRQ_IXP4XX_BASE + 10) +#define IRQ_IXP4XX_TIMER2 (IRQ_IXP4XX_BASE + 11) +#define IRQ_IXP4XX_USB (IRQ_IXP4XX_BASE + 12) +#define IRQ_IXP4XX_UART2 (IRQ_IXP4XX_BASE + 13) +#define IRQ_IXP4XX_TIMESTAMP (IRQ_IXP4XX_BASE + 14) +#define IRQ_IXP4XX_UART1 (IRQ_IXP4XX_BASE + 15) +#define IRQ_IXP4XX_WDOG (IRQ_IXP4XX_BASE + 16) +#define IRQ_IXP4XX_AHB_PMU (IRQ_IXP4XX_BASE + 17) +#define IRQ_IXP4XX_XSCALE_PMU (IRQ_IXP4XX_BASE + 18) +#define IRQ_IXP4XX_GPIO2 (IRQ_IXP4XX_BASE + 19) +#define IRQ_IXP4XX_GPIO3 (IRQ_IXP4XX_BASE + 20) +#define IRQ_IXP4XX_GPIO4 (IRQ_IXP4XX_BASE + 21) +#define IRQ_IXP4XX_GPIO5 (IRQ_IXP4XX_BASE + 22) +#define IRQ_IXP4XX_GPIO6 (IRQ_IXP4XX_BASE + 23) +#define IRQ_IXP4XX_GPIO7 (IRQ_IXP4XX_BASE + 24) +#define IRQ_IXP4XX_GPIO8 (IRQ_IXP4XX_BASE + 25) +#define IRQ_IXP4XX_GPIO9 (IRQ_IXP4XX_BASE + 26) +#define IRQ_IXP4XX_GPIO10 (IRQ_IXP4XX_BASE + 27) +#define IRQ_IXP4XX_GPIO11 (IRQ_IXP4XX_BASE + 28) +#define IRQ_IXP4XX_GPIO12 (IRQ_IXP4XX_BASE + 29) +#define IRQ_IXP4XX_SW_INT1 (IRQ_IXP4XX_BASE + 30) +#define IRQ_IXP4XX_SW_INT2 (IRQ_IXP4XX_BASE + 31) +#define IRQ_IXP4XX_USB_HOST (IRQ_IXP4XX_BASE + 32) +#define IRQ_IXP4XX_I2C (IRQ_IXP4XX_BASE + 33) +#define IRQ_IXP4XX_SSP (IRQ_IXP4XX_BASE + 34) +#define IRQ_IXP4XX_TSYNC (IRQ_IXP4XX_BASE + 35) +#define IRQ_IXP4XX_EAU_DONE (IRQ_IXP4XX_BASE + 36) +#define IRQ_IXP4XX_SHA_DONE (IRQ_IXP4XX_BASE + 37) +#define IRQ_IXP4XX_SWCP_PE (IRQ_IXP4XX_BASE + 58) +#define IRQ_IXP4XX_QM_PE (IRQ_IXP4XX_BASE + 60) +#define IRQ_IXP4XX_MCU_ECC (IRQ_IXP4XX_BASE + 61) +#define IRQ_IXP4XX_EXP_PE (IRQ_IXP4XX_BASE + 62) #define _IXP4XX_GPIO_IRQ(n) (IRQ_IXP4XX_GPIO ## n) #define IXP4XX_GPIO_IRQ(n) _IXP4XX_GPIO_IRQ(n) -/* - * Only first 32 sources are valid if running on IXP42x systems - */ -#if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X) -#define NR_IRQS 64 -#else -#define NR_IRQS 32 -#endif +#define NR_IRQS 512 #define XSCALE_PMU_IRQ (IRQ_IXP4XX_XSCALE_PMU) -- cgit v1.2.3 From dc8ef8cd3a05632bf15ce8714d6b84ece2836fe9 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 29 Dec 2018 15:47:52 +0100 Subject: ARM: ixp4xx: Convert to SPARSE_IRQ This localizes the header to the mach-ixp4xx directory, removes NR_IRQS and switches IXP4xx over to using SPARSE_IRQ. This is a prerequisite for DT support. Signed-off-by: Linus Walleij --- arch/arm/Kconfig | 1 + arch/arm/mach-ixp4xx/avila-pci.c | 2 + arch/arm/mach-ixp4xx/avila-setup.c | 2 + arch/arm/mach-ixp4xx/common.c | 2 + arch/arm/mach-ixp4xx/coyote-pci.c | 2 + arch/arm/mach-ixp4xx/coyote-setup.c | 2 + arch/arm/mach-ixp4xx/dsmg600-pci.c | 2 + arch/arm/mach-ixp4xx/dsmg600-setup.c | 2 + arch/arm/mach-ixp4xx/fsg-pci.c | 2 + arch/arm/mach-ixp4xx/fsg-setup.c | 2 + arch/arm/mach-ixp4xx/gateway7001-pci.c | 2 + arch/arm/mach-ixp4xx/gateway7001-setup.c | 2 + arch/arm/mach-ixp4xx/gtwx5715-pci.c | 2 + arch/arm/mach-ixp4xx/gtwx5715-setup.c | 2 + arch/arm/mach-ixp4xx/include/mach/irqs.h | 70 -------------------------------- arch/arm/mach-ixp4xx/irqs.h | 68 +++++++++++++++++++++++++++++++ arch/arm/mach-ixp4xx/ixdp425-pci.c | 2 + arch/arm/mach-ixp4xx/ixdp425-setup.c | 2 + arch/arm/mach-ixp4xx/ixdpg425-pci.c | 2 + arch/arm/mach-ixp4xx/ixp4xx_qmgr.c | 2 + arch/arm/mach-ixp4xx/nas100d-pci.c | 2 + arch/arm/mach-ixp4xx/nas100d-setup.c | 2 + arch/arm/mach-ixp4xx/nslu2-pci.c | 2 + arch/arm/mach-ixp4xx/nslu2-setup.c | 2 + arch/arm/mach-ixp4xx/wg302v2-pci.c | 2 + arch/arm/mach-ixp4xx/wg302v2-setup.c | 2 + 26 files changed, 115 insertions(+), 70 deletions(-) delete mode 100644 arch/arm/mach-ixp4xx/include/mach/irqs.h create mode 100644 arch/arm/mach-ixp4xx/irqs.h (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index eb27554aa04f..f5ec59a549e3 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -437,6 +437,7 @@ config ARCH_IXP4XX select GPIOLIB select HAVE_PCI select NEED_MACH_IO_H + select SPARSE_IRQ select USB_EHCI_BIG_ENDIAN_DESC select USB_EHCI_BIG_ENDIAN_MMIO help diff --git a/arch/arm/mach-ixp4xx/avila-pci.c b/arch/arm/mach-ixp4xx/avila-pci.c index 548c7d43ade6..9c834f0f4231 100644 --- a/arch/arm/mach-ixp4xx/avila-pci.c +++ b/arch/arm/mach-ixp4xx/avila-pci.c @@ -27,6 +27,8 @@ #include #include +#include "irqs.h" + #define AVILA_MAX_DEV 4 #define LOFT_MAX_DEV 6 #define IRQ_LINES 4 diff --git a/arch/arm/mach-ixp4xx/avila-setup.c b/arch/arm/mach-ixp4xx/avila-setup.c index 44cbbce6bda6..1981b33109cb 100644 --- a/arch/arm/mach-ixp4xx/avila-setup.c +++ b/arch/arm/mach-ixp4xx/avila-setup.c @@ -28,6 +28,8 @@ #include #include +#include "irqs.h" + #define AVILA_SDA_PIN 7 #define AVILA_SCL_PIN 6 diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index 58a1b851425e..aa8fd248c125 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -45,6 +45,8 @@ #include #include +#include "irqs.h" + #define IXP4XX_TIMER_FREQ 66666000 /* diff --git a/arch/arm/mach-ixp4xx/coyote-pci.c b/arch/arm/mach-ixp4xx/coyote-pci.c index 5d14ce2aee6d..a16c35d2bb96 100644 --- a/arch/arm/mach-ixp4xx/coyote-pci.c +++ b/arch/arm/mach-ixp4xx/coyote-pci.c @@ -23,6 +23,8 @@ #include #include +#include "irqs.h" + #define SLOT0_DEVID 14 #define SLOT1_DEVID 15 diff --git a/arch/arm/mach-ixp4xx/coyote-setup.c b/arch/arm/mach-ixp4xx/coyote-setup.c index 7e40fe70933b..7ca43ca2816d 100644 --- a/arch/arm/mach-ixp4xx/coyote-setup.c +++ b/arch/arm/mach-ixp4xx/coyote-setup.c @@ -25,6 +25,8 @@ #include #include +#include "irqs.h" + #define COYOTE_IDE_BASE_PHYS IXP4XX_EXP_BUS_BASE(3) #define COYOTE_IDE_BASE_VIRT 0xFFFE1000 #define COYOTE_IDE_REGION_SIZE 0x1000 diff --git a/arch/arm/mach-ixp4xx/dsmg600-pci.c b/arch/arm/mach-ixp4xx/dsmg600-pci.c index 8dca76937723..6899023bd1b7 100644 --- a/arch/arm/mach-ixp4xx/dsmg600-pci.c +++ b/arch/arm/mach-ixp4xx/dsmg600-pci.c @@ -22,6 +22,8 @@ #include #include +#include "irqs.h" + #define MAX_DEV 4 #define IRQ_LINES 3 diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c index 397190f3a8da..0daaede8fb6d 100644 --- a/arch/arm/mach-ixp4xx/dsmg600-setup.c +++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c @@ -35,6 +35,8 @@ #include #include +#include "irqs.h" + #define DSMG600_SDA_PIN 5 #define DSMG600_SCL_PIN 4 diff --git a/arch/arm/mach-ixp4xx/fsg-pci.c b/arch/arm/mach-ixp4xx/fsg-pci.c index fd4a8625b4ae..6c08bb9d9807 100644 --- a/arch/arm/mach-ixp4xx/fsg-pci.c +++ b/arch/arm/mach-ixp4xx/fsg-pci.c @@ -22,6 +22,8 @@ #include #include +#include "irqs.h" + #define MAX_DEV 3 #define IRQ_LINES 3 diff --git a/arch/arm/mach-ixp4xx/fsg-setup.c b/arch/arm/mach-ixp4xx/fsg-setup.c index f0a152e365b1..648932d8d7a8 100644 --- a/arch/arm/mach-ixp4xx/fsg-setup.c +++ b/arch/arm/mach-ixp4xx/fsg-setup.c @@ -29,6 +29,8 @@ #include #include +#include "irqs.h" + #define FSG_SDA_PIN 12 #define FSG_SCL_PIN 13 diff --git a/arch/arm/mach-ixp4xx/gateway7001-pci.c b/arch/arm/mach-ixp4xx/gateway7001-pci.c index d9d6cc089707..903c75330b76 100644 --- a/arch/arm/mach-ixp4xx/gateway7001-pci.c +++ b/arch/arm/mach-ixp4xx/gateway7001-pci.c @@ -27,6 +27,8 @@ #include +#include "irqs.h" + void __init gateway7001_pci_preinit(void) { irq_set_irq_type(IRQ_IXP4XX_GPIO10, IRQ_TYPE_LEVEL_LOW); diff --git a/arch/arm/mach-ixp4xx/gateway7001-setup.c b/arch/arm/mach-ixp4xx/gateway7001-setup.c index 1be6faf6da9a..678e7dfff0e5 100644 --- a/arch/arm/mach-ixp4xx/gateway7001-setup.c +++ b/arch/arm/mach-ixp4xx/gateway7001-setup.c @@ -28,6 +28,8 @@ #include #include +#include "irqs.h" + static struct flash_platform_data gateway7001_flash_data = { .map_name = "cfi_probe", .width = 2, diff --git a/arch/arm/mach-ixp4xx/gtwx5715-pci.c b/arch/arm/mach-ixp4xx/gtwx5715-pci.c index 551d114c9e14..1223d160448f 100644 --- a/arch/arm/mach-ixp4xx/gtwx5715-pci.c +++ b/arch/arm/mach-ixp4xx/gtwx5715-pci.c @@ -30,6 +30,8 @@ #include #include +#include "irqs.h" + #define SLOT0_DEVID 0 #define SLOT1_DEVID 1 #define INTA 10 /* slot 1 has INTA and INTB crossed */ diff --git a/arch/arm/mach-ixp4xx/gtwx5715-setup.c b/arch/arm/mach-ixp4xx/gtwx5715-setup.c index 16a12994fb53..5dbdde8e2338 100644 --- a/arch/arm/mach-ixp4xx/gtwx5715-setup.c +++ b/arch/arm/mach-ixp4xx/gtwx5715-setup.c @@ -36,6 +36,8 @@ #include #include +#include "irqs.h" + /* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch and operate as an SPI type interface. The details of the interface are available on Kendin/Micrel's web site. */ diff --git a/arch/arm/mach-ixp4xx/include/mach/irqs.h b/arch/arm/mach-ixp4xx/include/mach/irqs.h deleted file mode 100644 index dadcd4ddb0a9..000000000000 --- a/arch/arm/mach-ixp4xx/include/mach/irqs.h +++ /dev/null @@ -1,70 +0,0 @@ -/* - * arch/arm/mach-ixp4xx/include/mach/irqs.h - * - * IRQ definitions for IXP4XX based systems - * - * Copyright (C) 2002 Intel Corporation. - * Copyright (C) 2003 MontaVista Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#ifndef _ARCH_IXP4XX_IRQS_H_ -#define _ARCH_IXP4XX_IRQS_H_ - -#define IRQ_IXP4XX_BASE 16 - -#define IRQ_IXP4XX_NPEA (IRQ_IXP4XX_BASE + 0) -#define IRQ_IXP4XX_NPEB (IRQ_IXP4XX_BASE + 1) -#define IRQ_IXP4XX_NPEC (IRQ_IXP4XX_BASE + 2) -#define IRQ_IXP4XX_QM1 (IRQ_IXP4XX_BASE + 3) -#define IRQ_IXP4XX_QM2 (IRQ_IXP4XX_BASE + 4) -#define IRQ_IXP4XX_TIMER1 (IRQ_IXP4XX_BASE + 5) -#define IRQ_IXP4XX_GPIO0 (IRQ_IXP4XX_BASE + 6) -#define IRQ_IXP4XX_GPIO1 (IRQ_IXP4XX_BASE + 7) -#define IRQ_IXP4XX_PCI_INT (IRQ_IXP4XX_BASE + 8) -#define IRQ_IXP4XX_PCI_DMA1 (IRQ_IXP4XX_BASE + 9) -#define IRQ_IXP4XX_PCI_DMA2 (IRQ_IXP4XX_BASE + 10) -#define IRQ_IXP4XX_TIMER2 (IRQ_IXP4XX_BASE + 11) -#define IRQ_IXP4XX_USB (IRQ_IXP4XX_BASE + 12) -#define IRQ_IXP4XX_UART2 (IRQ_IXP4XX_BASE + 13) -#define IRQ_IXP4XX_TIMESTAMP (IRQ_IXP4XX_BASE + 14) -#define IRQ_IXP4XX_UART1 (IRQ_IXP4XX_BASE + 15) -#define IRQ_IXP4XX_WDOG (IRQ_IXP4XX_BASE + 16) -#define IRQ_IXP4XX_AHB_PMU (IRQ_IXP4XX_BASE + 17) -#define IRQ_IXP4XX_XSCALE_PMU (IRQ_IXP4XX_BASE + 18) -#define IRQ_IXP4XX_GPIO2 (IRQ_IXP4XX_BASE + 19) -#define IRQ_IXP4XX_GPIO3 (IRQ_IXP4XX_BASE + 20) -#define IRQ_IXP4XX_GPIO4 (IRQ_IXP4XX_BASE + 21) -#define IRQ_IXP4XX_GPIO5 (IRQ_IXP4XX_BASE + 22) -#define IRQ_IXP4XX_GPIO6 (IRQ_IXP4XX_BASE + 23) -#define IRQ_IXP4XX_GPIO7 (IRQ_IXP4XX_BASE + 24) -#define IRQ_IXP4XX_GPIO8 (IRQ_IXP4XX_BASE + 25) -#define IRQ_IXP4XX_GPIO9 (IRQ_IXP4XX_BASE + 26) -#define IRQ_IXP4XX_GPIO10 (IRQ_IXP4XX_BASE + 27) -#define IRQ_IXP4XX_GPIO11 (IRQ_IXP4XX_BASE + 28) -#define IRQ_IXP4XX_GPIO12 (IRQ_IXP4XX_BASE + 29) -#define IRQ_IXP4XX_SW_INT1 (IRQ_IXP4XX_BASE + 30) -#define IRQ_IXP4XX_SW_INT2 (IRQ_IXP4XX_BASE + 31) -#define IRQ_IXP4XX_USB_HOST (IRQ_IXP4XX_BASE + 32) -#define IRQ_IXP4XX_I2C (IRQ_IXP4XX_BASE + 33) -#define IRQ_IXP4XX_SSP (IRQ_IXP4XX_BASE + 34) -#define IRQ_IXP4XX_TSYNC (IRQ_IXP4XX_BASE + 35) -#define IRQ_IXP4XX_EAU_DONE (IRQ_IXP4XX_BASE + 36) -#define IRQ_IXP4XX_SHA_DONE (IRQ_IXP4XX_BASE + 37) -#define IRQ_IXP4XX_SWCP_PE (IRQ_IXP4XX_BASE + 58) -#define IRQ_IXP4XX_QM_PE (IRQ_IXP4XX_BASE + 60) -#define IRQ_IXP4XX_MCU_ECC (IRQ_IXP4XX_BASE + 61) -#define IRQ_IXP4XX_EXP_PE (IRQ_IXP4XX_BASE + 62) - -#define _IXP4XX_GPIO_IRQ(n) (IRQ_IXP4XX_GPIO ## n) -#define IXP4XX_GPIO_IRQ(n) _IXP4XX_GPIO_IRQ(n) - -#define NR_IRQS 512 - -#define XSCALE_PMU_IRQ (IRQ_IXP4XX_XSCALE_PMU) - -#endif diff --git a/arch/arm/mach-ixp4xx/irqs.h b/arch/arm/mach-ixp4xx/irqs.h new file mode 100644 index 000000000000..6b7f220cf9e0 --- /dev/null +++ b/arch/arm/mach-ixp4xx/irqs.h @@ -0,0 +1,68 @@ +/* + * arch/arm/mach-ixp4xx/include/mach/irqs.h + * + * IRQ definitions for IXP4XX based systems + * + * Copyright (C) 2002 Intel Corporation. + * Copyright (C) 2003 MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef _ARCH_IXP4XX_IRQS_H_ +#define _ARCH_IXP4XX_IRQS_H_ + +#define IRQ_IXP4XX_BASE 16 + +#define IRQ_IXP4XX_NPEA (IRQ_IXP4XX_BASE + 0) +#define IRQ_IXP4XX_NPEB (IRQ_IXP4XX_BASE + 1) +#define IRQ_IXP4XX_NPEC (IRQ_IXP4XX_BASE + 2) +#define IRQ_IXP4XX_QM1 (IRQ_IXP4XX_BASE + 3) +#define IRQ_IXP4XX_QM2 (IRQ_IXP4XX_BASE + 4) +#define IRQ_IXP4XX_TIMER1 (IRQ_IXP4XX_BASE + 5) +#define IRQ_IXP4XX_GPIO0 (IRQ_IXP4XX_BASE + 6) +#define IRQ_IXP4XX_GPIO1 (IRQ_IXP4XX_BASE + 7) +#define IRQ_IXP4XX_PCI_INT (IRQ_IXP4XX_BASE + 8) +#define IRQ_IXP4XX_PCI_DMA1 (IRQ_IXP4XX_BASE + 9) +#define IRQ_IXP4XX_PCI_DMA2 (IRQ_IXP4XX_BASE + 10) +#define IRQ_IXP4XX_TIMER2 (IRQ_IXP4XX_BASE + 11) +#define IRQ_IXP4XX_USB (IRQ_IXP4XX_BASE + 12) +#define IRQ_IXP4XX_UART2 (IRQ_IXP4XX_BASE + 13) +#define IRQ_IXP4XX_TIMESTAMP (IRQ_IXP4XX_BASE + 14) +#define IRQ_IXP4XX_UART1 (IRQ_IXP4XX_BASE + 15) +#define IRQ_IXP4XX_WDOG (IRQ_IXP4XX_BASE + 16) +#define IRQ_IXP4XX_AHB_PMU (IRQ_IXP4XX_BASE + 17) +#define IRQ_IXP4XX_XSCALE_PMU (IRQ_IXP4XX_BASE + 18) +#define IRQ_IXP4XX_GPIO2 (IRQ_IXP4XX_BASE + 19) +#define IRQ_IXP4XX_GPIO3 (IRQ_IXP4XX_BASE + 20) +#define IRQ_IXP4XX_GPIO4 (IRQ_IXP4XX_BASE + 21) +#define IRQ_IXP4XX_GPIO5 (IRQ_IXP4XX_BASE + 22) +#define IRQ_IXP4XX_GPIO6 (IRQ_IXP4XX_BASE + 23) +#define IRQ_IXP4XX_GPIO7 (IRQ_IXP4XX_BASE + 24) +#define IRQ_IXP4XX_GPIO8 (IRQ_IXP4XX_BASE + 25) +#define IRQ_IXP4XX_GPIO9 (IRQ_IXP4XX_BASE + 26) +#define IRQ_IXP4XX_GPIO10 (IRQ_IXP4XX_BASE + 27) +#define IRQ_IXP4XX_GPIO11 (IRQ_IXP4XX_BASE + 28) +#define IRQ_IXP4XX_GPIO12 (IRQ_IXP4XX_BASE + 29) +#define IRQ_IXP4XX_SW_INT1 (IRQ_IXP4XX_BASE + 30) +#define IRQ_IXP4XX_SW_INT2 (IRQ_IXP4XX_BASE + 31) +#define IRQ_IXP4XX_USB_HOST (IRQ_IXP4XX_BASE + 32) +#define IRQ_IXP4XX_I2C (IRQ_IXP4XX_BASE + 33) +#define IRQ_IXP4XX_SSP (IRQ_IXP4XX_BASE + 34) +#define IRQ_IXP4XX_TSYNC (IRQ_IXP4XX_BASE + 35) +#define IRQ_IXP4XX_EAU_DONE (IRQ_IXP4XX_BASE + 36) +#define IRQ_IXP4XX_SHA_DONE (IRQ_IXP4XX_BASE + 37) +#define IRQ_IXP4XX_SWCP_PE (IRQ_IXP4XX_BASE + 58) +#define IRQ_IXP4XX_QM_PE (IRQ_IXP4XX_BASE + 60) +#define IRQ_IXP4XX_MCU_ECC (IRQ_IXP4XX_BASE + 61) +#define IRQ_IXP4XX_EXP_PE (IRQ_IXP4XX_BASE + 62) + +#define _IXP4XX_GPIO_IRQ(n) (IRQ_IXP4XX_GPIO ## n) +#define IXP4XX_GPIO_IRQ(n) _IXP4XX_GPIO_IRQ(n) + +#define XSCALE_PMU_IRQ (IRQ_IXP4XX_XSCALE_PMU) + +#endif diff --git a/arch/arm/mach-ixp4xx/ixdp425-pci.c b/arch/arm/mach-ixp4xx/ixdp425-pci.c index 318424dd3c50..c1340465b2ea 100644 --- a/arch/arm/mach-ixp4xx/ixdp425-pci.c +++ b/arch/arm/mach-ixp4xx/ixdp425-pci.c @@ -24,6 +24,8 @@ #include #include +#include "irqs.h" + #define MAX_DEV 4 #define IRQ_LINES 4 diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c index 57d7df79d838..6f0f7ed18ea8 100644 --- a/arch/arm/mach-ixp4xx/ixdp425-setup.c +++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c @@ -32,6 +32,8 @@ #include #include +#include "irqs.h" + #define IXDP425_SDA_PIN 7 #define IXDP425_SCL_PIN 6 diff --git a/arch/arm/mach-ixp4xx/ixdpg425-pci.c b/arch/arm/mach-ixp4xx/ixdpg425-pci.c index 1f8717ba13dc..ac0e9bc6eb4d 100644 --- a/arch/arm/mach-ixp4xx/ixdpg425-pci.c +++ b/arch/arm/mach-ixp4xx/ixdpg425-pci.c @@ -23,6 +23,8 @@ #include +#include "irqs.h" + void __init ixdpg425_pci_preinit(void) { irq_set_irq_type(IRQ_IXP4XX_GPIO6, IRQ_TYPE_LEVEL_LOW); diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c index 9d1b6b7c394c..4c7c960e1b4c 100644 --- a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c @@ -14,6 +14,8 @@ #include #include +#include "irqs.h" + static struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; static struct resource *mem_res; static spinlock_t qmgr_lock; diff --git a/arch/arm/mach-ixp4xx/nas100d-pci.c b/arch/arm/mach-ixp4xx/nas100d-pci.c index 8f0eba0a6800..925ef805f966 100644 --- a/arch/arm/mach-ixp4xx/nas100d-pci.c +++ b/arch/arm/mach-ixp4xx/nas100d-pci.c @@ -21,6 +21,8 @@ #include #include +#include "irqs.h" + #define MAX_DEV 3 #define IRQ_LINES 3 diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c index 4138d6aa4c52..9d67f8de0772 100644 --- a/arch/arm/mach-ixp4xx/nas100d-setup.c +++ b/arch/arm/mach-ixp4xx/nas100d-setup.c @@ -34,6 +34,8 @@ #include #include +#include "irqs.h" + #define NAS100D_SDA_PIN 5 #define NAS100D_SCL_PIN 6 diff --git a/arch/arm/mach-ixp4xx/nslu2-pci.c b/arch/arm/mach-ixp4xx/nslu2-pci.c index 032defe111aa..d69ee4066d20 100644 --- a/arch/arm/mach-ixp4xx/nslu2-pci.c +++ b/arch/arm/mach-ixp4xx/nslu2-pci.c @@ -21,6 +21,8 @@ #include #include +#include "irqs.h" + #define MAX_DEV 3 #define IRQ_LINES 3 diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c index 7c2b6604187e..ee1877fcfafe 100644 --- a/arch/arm/mach-ixp4xx/nslu2-setup.c +++ b/arch/arm/mach-ixp4xx/nslu2-setup.c @@ -32,6 +32,8 @@ #include #include +#include "irqs.h" + #define NSLU2_SDA_PIN 7 #define NSLU2_SCL_PIN 6 diff --git a/arch/arm/mach-ixp4xx/wg302v2-pci.c b/arch/arm/mach-ixp4xx/wg302v2-pci.c index c92e5b82af36..cf83f7e24179 100644 --- a/arch/arm/mach-ixp4xx/wg302v2-pci.c +++ b/arch/arm/mach-ixp4xx/wg302v2-pci.c @@ -27,6 +27,8 @@ #include +#include "irqs.h" + void __init wg302v2_pci_preinit(void) { irq_set_irq_type(IRQ_IXP4XX_GPIO8, IRQ_TYPE_LEVEL_LOW); diff --git a/arch/arm/mach-ixp4xx/wg302v2-setup.c b/arch/arm/mach-ixp4xx/wg302v2-setup.c index 90b3c604e8b6..8711e299229b 100644 --- a/arch/arm/mach-ixp4xx/wg302v2-setup.c +++ b/arch/arm/mach-ixp4xx/wg302v2-setup.c @@ -29,6 +29,8 @@ #include #include +#include "irqs.h" + static struct flash_platform_data wg302v2_flash_data = { .map_name = "cfi_probe", .width = 2, -- cgit v1.2.3 From 55ec465e733e60d2d524bd42ff19b66ed21f01df Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 25 Jan 2019 22:58:39 +0100 Subject: ARM: ixp4xx: Switch to use new IRQ+GPIO drivers This deletes the old irq+gpiochip combo from the IXP4xx machine and switches it over to use the new drivers merged in respective subsystem. Cc: Jason Cooper Cc: Thomas Gleixner Cc: Bartosz Golaszewski Acked-by: Marc Zyngier Signed-off-by: Linus Walleij --- arch/arm/Kconfig | 3 +- arch/arm/mach-ixp4xx/common.c | 318 ++---------------------- arch/arm/mach-ixp4xx/dsmg600-setup.c | 3 - arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h | 89 ------- arch/arm/mach-ixp4xx/nas100d-setup.c | 3 - 5 files changed, 24 insertions(+), 392 deletions(-) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index f5ec59a549e3..798cb0f4f9de 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -434,10 +434,11 @@ config ARCH_IXP4XX select DMABOUNCE if PCI select GENERIC_CLOCKEVENTS select GENERIC_IRQ_MULTI_HANDLER + select GPIO_IXP4XX select GPIOLIB select HAVE_PCI + select IXP4XX_IRQ select NEED_MACH_IO_H - select SPARSE_IRQ select USB_EHCI_BIG_ENDIAN_DESC select USB_EHCI_BIG_ENDIAN_MMIO help diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index aa8fd248c125..71683dfc48f9 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -27,11 +27,11 @@ #include #include #include -#include #include #include #include #include +#include #include #include #include @@ -58,7 +58,6 @@ (IXP4XX_OST_RELOAD_MASK + 1) * HZ) * \ (IXP4XX_OST_RELOAD_MASK + 1) -static struct irq_domain *ixp4xx_irqdomain; static void __init ixp4xx_clocksource_init(void); static void __init ixp4xx_clockevent_init(void); static struct clock_event_device clockevent_ixp4xx; @@ -95,266 +94,18 @@ void __init ixp4xx_map_io(void) iotable_init(ixp4xx_io_desc, ARRAY_SIZE(ixp4xx_io_desc)); } -/* - * GPIO-functions - */ -/* - * The following converted to the real HW bits the gpio_line_config - */ -/* GPIO pin types */ -#define IXP4XX_GPIO_OUT 0x1 -#define IXP4XX_GPIO_IN 0x2 - -/* GPIO signal types */ -#define IXP4XX_GPIO_LOW 0 -#define IXP4XX_GPIO_HIGH 1 - -/* GPIO Clocks */ -#define IXP4XX_GPIO_CLK_0 14 -#define IXP4XX_GPIO_CLK_1 15 - -static void gpio_line_config(u8 line, u32 direction) -{ - if (direction == IXP4XX_GPIO_IN) - *IXP4XX_GPIO_GPOER |= (1 << line); - else - *IXP4XX_GPIO_GPOER &= ~(1 << line); -} - -static void gpio_line_get(u8 line, int *value) -{ - *value = (*IXP4XX_GPIO_GPINR >> line) & 0x1; -} - -static void gpio_line_set(u8 line, int value) -{ - if (value == IXP4XX_GPIO_HIGH) - *IXP4XX_GPIO_GPOUTR |= (1 << line); - else if (value == IXP4XX_GPIO_LOW) - *IXP4XX_GPIO_GPOUTR &= ~(1 << line); -} - -/************************************************************************* - * IXP4xx chipset IRQ handling - * - * TODO: GPIO IRQs should be marked invalid until the user of the IRQ - * (be it PCI or something else) configures that GPIO line - * as an IRQ. - **************************************************************************/ -enum ixp4xx_irq_type { - IXP4XX_IRQ_LEVEL, IXP4XX_IRQ_EDGE -}; - -/* Each bit represents an IRQ: 1: edge-triggered, 0: level triggered */ -static unsigned long long ixp4xx_irq_edge = 0; - -/* - * IRQ -> GPIO mapping table - */ -static signed char irq2gpio[32] = { - -1, -1, -1, -1, -1, -1, 0, 1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, 2, 3, 4, 5, 6, - 7, 8, 9, 10, 11, 12, -1, -1, -}; - -static int ixp4xx_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) -{ - int irq; - - for (irq = 0; irq < 32; irq++) { - if (irq2gpio[irq] == gpio) - return irq; - } - return -EINVAL; -} - -static int ixp4xx_set_irq_type(struct irq_data *d, unsigned int type) -{ - int line = irq2gpio[d->hwirq]; - u32 int_style; - enum ixp4xx_irq_type irq_type; - volatile u32 *int_reg; - - /* - * Only for GPIO IRQs - * all other IRQs are simply active low - */ - if (line < 0) - return 0; - - switch (type){ - case IRQ_TYPE_EDGE_BOTH: - int_style = IXP4XX_GPIO_STYLE_TRANSITIONAL; - irq_type = IXP4XX_IRQ_EDGE; - break; - case IRQ_TYPE_EDGE_RISING: - int_style = IXP4XX_GPIO_STYLE_RISING_EDGE; - irq_type = IXP4XX_IRQ_EDGE; - break; - case IRQ_TYPE_EDGE_FALLING: - int_style = IXP4XX_GPIO_STYLE_FALLING_EDGE; - irq_type = IXP4XX_IRQ_EDGE; - break; - case IRQ_TYPE_LEVEL_HIGH: - int_style = IXP4XX_GPIO_STYLE_ACTIVE_HIGH; - irq_type = IXP4XX_IRQ_LEVEL; - break; - case IRQ_TYPE_LEVEL_LOW: - int_style = IXP4XX_GPIO_STYLE_ACTIVE_LOW; - irq_type = IXP4XX_IRQ_LEVEL; - break; - default: - return -EINVAL; - } - - if (irq_type == IXP4XX_IRQ_EDGE) - ixp4xx_irq_edge |= (1 << d->hwirq); - else - ixp4xx_irq_edge &= ~(1 << d->hwirq); - - if (line >= 8) { /* pins 8-15 */ - line -= 8; - int_reg = IXP4XX_GPIO_GPIT2R; - } else { /* pins 0-7 */ - int_reg = IXP4XX_GPIO_GPIT1R; - } - - /* Clear the style for the appropriate pin */ - *int_reg &= ~(IXP4XX_GPIO_STYLE_CLEAR << - (line * IXP4XX_GPIO_STYLE_SIZE)); - - *IXP4XX_GPIO_GPISR = (1 << line); - - /* Set the new style */ - *int_reg |= (int_style << (line * IXP4XX_GPIO_STYLE_SIZE)); - - /* Configure the line as an input */ - gpio_line_config(irq2gpio[d->hwirq], IXP4XX_GPIO_IN); - - return 0; -} - -static void ixp4xx_irq_mask(struct irq_data *d) -{ - if ((cpu_is_ixp46x() || cpu_is_ixp43x()) && d->hwirq >= 32) - *IXP4XX_ICMR2 &= ~(1 << (d->hwirq - 32)); - else - *IXP4XX_ICMR &= ~(1 << d->hwirq); -} - -static void ixp4xx_irq_ack(struct irq_data *d) -{ - int line = (d->hwirq < 32) ? irq2gpio[d->hwirq] : -1; - - if (line >= 0) - *IXP4XX_GPIO_GPISR = (1 << line); -} - -/* - * Level triggered interrupts on GPIO lines can only be cleared when the - * interrupt condition disappears. - */ -static void ixp4xx_irq_unmask(struct irq_data *d) -{ - if (!(ixp4xx_irq_edge & (1 << d->hwirq))) - ixp4xx_irq_ack(d); - - if ((cpu_is_ixp46x() || cpu_is_ixp43x()) && d->hwirq >= 32) - *IXP4XX_ICMR2 |= (1 << (d->hwirq - 32)); - else - *IXP4XX_ICMR |= (1 << d->hwirq); -} - -static struct irq_chip ixp4xx_irq_chip = { - .name = "IXP4xx", - .irq_ack = ixp4xx_irq_ack, - .irq_mask = ixp4xx_irq_mask, - .irq_unmask = ixp4xx_irq_unmask, - .irq_set_type = ixp4xx_set_irq_type, -}; - -asmlinkage void __exception_irq_entry ixp4xx_handle_irq(struct pt_regs *regs) -{ - unsigned long status; - int i; - - status = *IXP4XX_ICIP; - - for_each_set_bit(i, &status, 32) - handle_domain_irq(ixp4xx_irqdomain, i, regs); - - /* - * IXP465/IXP435 has an upper IRQ status register - */ - if ((cpu_is_ixp46x() || cpu_is_ixp43x())) { - status = *IXP4XX_ICIP2; - for_each_set_bit(i, &status, 32) - handle_domain_irq(ixp4xx_irqdomain, i + 32, regs); - } -} - -static int ixp4xx_irqdomain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hwirq) -{ - irq_set_chip_data(irq, &ixp4xx_irq_chip); - irq_set_chip_and_handler(irq, &ixp4xx_irq_chip, handle_level_irq); - irq_set_probe(irq); - - return 0; -} - -static void ixp4xx_irqdomain_unmap(struct irq_domain *d, unsigned int irq) -{ - irq_set_chip_and_handler(irq, NULL, NULL); - irq_set_chip_data(irq, NULL); -} - -static const struct irq_domain_ops ixp4xx_irqdomain_ops = { - .map = ixp4xx_irqdomain_map, - .unmap = ixp4xx_irqdomain_unmap, -}; - void __init ixp4xx_init_irq(void) { - int nr_irqs; - /* * ixp4xx does not implement the XScale PWRMODE register * so it must not call cpu_do_idle(). */ cpu_idle_poll_ctrl(true); - /* Route all sources to IRQ instead of FIQ */ - *IXP4XX_ICLR = 0x0; - - /* Disable all interrupt */ - *IXP4XX_ICMR = 0x0; - - if (cpu_is_ixp46x() || cpu_is_ixp43x()) { - /* Route upper 32 sources to IRQ instead of FIQ */ - *IXP4XX_ICLR2 = 0x00; - - /* Disable upper 32 interrupts */ - *IXP4XX_ICMR2 = 0x00; - - nr_irqs = 64; - } else { - nr_irqs = 32; - } - - ixp4xx_irqdomain = irq_domain_add_simple(NULL, nr_irqs, IRQ_IXP4XX_BASE, - &ixp4xx_irqdomain_ops, - NULL); - if (!ixp4xx_irqdomain) { - pr_crit("can not add primary irqdomain\n"); - return; - } - - set_handle_irq(ixp4xx_handle_irq); + ixp4xx_irq_init(IXP4XX_INTC_BASE_PHYS, + (cpu_is_ixp46x() || cpu_is_ixp43x())); } - /************************************************************************* * IXP4xx timer tick * We use OS timer1 on the CPU for the timer tick and the timestamp @@ -408,6 +159,24 @@ static struct resource ixp4xx_udc_resources[] = { }, }; +static struct resource ixp4xx_gpio_resource[] = { + { + .start = IXP4XX_GPIO_BASE_PHYS, + .end = IXP4XX_GPIO_BASE_PHYS + 0xfff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ixp4xx_gpio_device = { + .name = "ixp4xx-gpio", + .id = -1, + .dev = { + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .resource = ixp4xx_gpio_resource, + .num_resources = ARRAY_SIZE(ixp4xx_gpio_resource), +}; + /* * USB device controller. The IXP4xx uses the same controller as PXA25X, * so we just use the same device. @@ -423,6 +192,7 @@ static struct platform_device ixp4xx_udc_device = { }; static struct platform_device *ixp4xx_devices[] __initdata = { + &ixp4xx_gpio_device, &ixp4xx_udc_device, }; @@ -457,56 +227,12 @@ static struct platform_device *ixp46x_devices[] __initdata = { unsigned long ixp4xx_exp_bus_size; EXPORT_SYMBOL(ixp4xx_exp_bus_size); -static int ixp4xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) -{ - gpio_line_config(gpio, IXP4XX_GPIO_IN); - - return 0; -} - -static int ixp4xx_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, - int level) -{ - gpio_line_set(gpio, level); - gpio_line_config(gpio, IXP4XX_GPIO_OUT); - - return 0; -} - -static int ixp4xx_gpio_get_value(struct gpio_chip *chip, unsigned gpio) -{ - int value; - - gpio_line_get(gpio, &value); - - return value; -} - -static void ixp4xx_gpio_set_value(struct gpio_chip *chip, unsigned gpio, - int value) -{ - gpio_line_set(gpio, value); -} - -static struct gpio_chip ixp4xx_gpio_chip = { - .label = "IXP4XX_GPIO_CHIP", - .direction_input = ixp4xx_gpio_direction_input, - .direction_output = ixp4xx_gpio_direction_output, - .get = ixp4xx_gpio_get_value, - .set = ixp4xx_gpio_set_value, - .to_irq = ixp4xx_gpio_to_irq, - .base = 0, - .ngpio = 16, -}; - void __init ixp4xx_sys_init(void) { ixp4xx_exp_bus_size = SZ_16M; platform_add_devices(ixp4xx_devices, ARRAY_SIZE(ixp4xx_devices)); - gpiochip_add_data(&ixp4xx_gpio_chip, NULL); - if (cpu_is_ixp46x()) { int region; diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c index 0daaede8fb6d..4d4c62fced71 100644 --- a/arch/arm/mach-ixp4xx/dsmg600-setup.c +++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c @@ -270,9 +270,6 @@ static void __init dsmg600_init(void) { ixp4xx_sys_init(); - /* Make sure that GPIO14 and GPIO15 are not used as clocks */ - *IXP4XX_GPIO_GPCLKR = 0; - dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); dsmg600_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; diff --git a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h index b7ddd27419c2..459abe2eb4b5 100644 --- a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h +++ b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h @@ -147,95 +147,6 @@ #define IXP4XX_I2C_BASE_VIRT (IXP4XX_PERIPHERAL_BASE_VIRT + 0x11000) #define IXP4XX_SSP_BASE_VIRT (IXP4XX_PERIPHERAL_BASE_VIRT + 0x12000) -/* - * Constants to make it easy to access Interrupt Controller registers - */ -#define IXP4XX_ICPR_OFFSET 0x00 /* Interrupt Status */ -#define IXP4XX_ICMR_OFFSET 0x04 /* Interrupt Enable */ -#define IXP4XX_ICLR_OFFSET 0x08 /* Interrupt IRQ/FIQ Select */ -#define IXP4XX_ICIP_OFFSET 0x0C /* IRQ Status */ -#define IXP4XX_ICFP_OFFSET 0x10 /* FIQ Status */ -#define IXP4XX_ICHR_OFFSET 0x14 /* Interrupt Priority */ -#define IXP4XX_ICIH_OFFSET 0x18 /* IRQ Highest Pri Int */ -#define IXP4XX_ICFH_OFFSET 0x1C /* FIQ Highest Pri Int */ - -/* - * IXP465-only - */ -#define IXP4XX_ICPR2_OFFSET 0x20 /* Interrupt Status 2 */ -#define IXP4XX_ICMR2_OFFSET 0x24 /* Interrupt Enable 2 */ -#define IXP4XX_ICLR2_OFFSET 0x28 /* Interrupt IRQ/FIQ Select 2 */ -#define IXP4XX_ICIP2_OFFSET 0x2C /* IRQ Status */ -#define IXP4XX_ICFP2_OFFSET 0x30 /* FIQ Status */ -#define IXP4XX_ICEEN_OFFSET 0x34 /* Error High Pri Enable */ - - -/* - * Interrupt Controller Register Definitions. - */ - -#define IXP4XX_INTC_REG(x) ((volatile u32 *)(IXP4XX_INTC_BASE_VIRT+(x))) - -#define IXP4XX_ICPR IXP4XX_INTC_REG(IXP4XX_ICPR_OFFSET) -#define IXP4XX_ICMR IXP4XX_INTC_REG(IXP4XX_ICMR_OFFSET) -#define IXP4XX_ICLR IXP4XX_INTC_REG(IXP4XX_ICLR_OFFSET) -#define IXP4XX_ICIP IXP4XX_INTC_REG(IXP4XX_ICIP_OFFSET) -#define IXP4XX_ICFP IXP4XX_INTC_REG(IXP4XX_ICFP_OFFSET) -#define IXP4XX_ICHR IXP4XX_INTC_REG(IXP4XX_ICHR_OFFSET) -#define IXP4XX_ICIH IXP4XX_INTC_REG(IXP4XX_ICIH_OFFSET) -#define IXP4XX_ICFH IXP4XX_INTC_REG(IXP4XX_ICFH_OFFSET) -#define IXP4XX_ICPR2 IXP4XX_INTC_REG(IXP4XX_ICPR2_OFFSET) -#define IXP4XX_ICMR2 IXP4XX_INTC_REG(IXP4XX_ICMR2_OFFSET) -#define IXP4XX_ICLR2 IXP4XX_INTC_REG(IXP4XX_ICLR2_OFFSET) -#define IXP4XX_ICIP2 IXP4XX_INTC_REG(IXP4XX_ICIP2_OFFSET) -#define IXP4XX_ICFP2 IXP4XX_INTC_REG(IXP4XX_ICFP2_OFFSET) -#define IXP4XX_ICEEN IXP4XX_INTC_REG(IXP4XX_ICEEN_OFFSET) - -/* - * Constants to make it easy to access GPIO registers - */ -#define IXP4XX_GPIO_GPOUTR_OFFSET 0x00 -#define IXP4XX_GPIO_GPOER_OFFSET 0x04 -#define IXP4XX_GPIO_GPINR_OFFSET 0x08 -#define IXP4XX_GPIO_GPISR_OFFSET 0x0C -#define IXP4XX_GPIO_GPIT1R_OFFSET 0x10 -#define IXP4XX_GPIO_GPIT2R_OFFSET 0x14 -#define IXP4XX_GPIO_GPCLKR_OFFSET 0x18 -#define IXP4XX_GPIO_GPDBSELR_OFFSET 0x1C - -/* - * GPIO Register Definitions. - * [Only perform 32bit reads/writes] - */ -#define IXP4XX_GPIO_REG(x) ((volatile u32 *)(IXP4XX_GPIO_BASE_VIRT+(x))) - -#define IXP4XX_GPIO_GPOUTR IXP4XX_GPIO_REG(IXP4XX_GPIO_GPOUTR_OFFSET) -#define IXP4XX_GPIO_GPOER IXP4XX_GPIO_REG(IXP4XX_GPIO_GPOER_OFFSET) -#define IXP4XX_GPIO_GPINR IXP4XX_GPIO_REG(IXP4XX_GPIO_GPINR_OFFSET) -#define IXP4XX_GPIO_GPISR IXP4XX_GPIO_REG(IXP4XX_GPIO_GPISR_OFFSET) -#define IXP4XX_GPIO_GPIT1R IXP4XX_GPIO_REG(IXP4XX_GPIO_GPIT1R_OFFSET) -#define IXP4XX_GPIO_GPIT2R IXP4XX_GPIO_REG(IXP4XX_GPIO_GPIT2R_OFFSET) -#define IXP4XX_GPIO_GPCLKR IXP4XX_GPIO_REG(IXP4XX_GPIO_GPCLKR_OFFSET) -#define IXP4XX_GPIO_GPDBSELR IXP4XX_GPIO_REG(IXP4XX_GPIO_GPDBSELR_OFFSET) - -/* - * GPIO register bit definitions - */ - -/* Interrupt styles - */ -#define IXP4XX_GPIO_STYLE_ACTIVE_HIGH 0x0 -#define IXP4XX_GPIO_STYLE_ACTIVE_LOW 0x1 -#define IXP4XX_GPIO_STYLE_RISING_EDGE 0x2 -#define IXP4XX_GPIO_STYLE_FALLING_EDGE 0x3 -#define IXP4XX_GPIO_STYLE_TRANSITIONAL 0x4 - -/* - * Mask used to clear interrupt styles - */ -#define IXP4XX_GPIO_STYLE_CLEAR 0x7 -#define IXP4XX_GPIO_STYLE_SIZE 3 - /* * Constants to make it easy to access Timer Control/Status registers */ diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c index 9d67f8de0772..c142cfa8c5d6 100644 --- a/arch/arm/mach-ixp4xx/nas100d-setup.c +++ b/arch/arm/mach-ixp4xx/nas100d-setup.c @@ -281,9 +281,6 @@ static void __init nas100d_init(void) ixp4xx_sys_init(); - /* gpio 14 and 15 are _not_ clocks */ - *IXP4XX_GPIO_GPCLKR = 0; - nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); nas100d_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; -- cgit v1.2.3 From 65af666713ffd275d6db3f086f80e070594c4732 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 26 Jan 2019 00:51:51 +0100 Subject: ARM: ixp4xx: Switch to use new timer driver This augments the IXP4xx to select and use the new timer driver in drivers/clocksource and removes the old code in the machine. Cc: Daniel Lezcano Cc: Thomas Gleixner Acked-by: Daniel Lezcano Signed-off-by: Linus Walleij --- arch/arm/Kconfig | 2 +- arch/arm/mach-ixp4xx/common.c | 153 ++---------------------------------------- 2 files changed, 5 insertions(+), 150 deletions(-) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 798cb0f4f9de..c614526a54ee 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -429,7 +429,6 @@ config ARCH_IXP4XX depends on MMU select ARCH_HAS_DMA_SET_COHERENT_MASK select ARCH_SUPPORTS_BIG_ENDIAN - select CLKSRC_MMIO select CPU_XSCALE select DMABOUNCE if PCI select GENERIC_CLOCKEVENTS @@ -438,6 +437,7 @@ config ARCH_IXP4XX select GPIOLIB select HAVE_PCI select IXP4XX_IRQ + select IXP4XX_TIMER select NEED_MACH_IO_H select USB_EHCI_BIG_ENDIAN_DESC select USB_EHCI_BIG_ENDIAN_MMIO diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index 71683dfc48f9..fc4c9b21ca96 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -22,9 +22,6 @@ #include #include #include -#include -#include -#include #include #include #include @@ -32,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -49,19 +47,6 @@ #define IXP4XX_TIMER_FREQ 66666000 -/* - * The timer register doesn't allow to specify the two least significant bits of - * the timeout value and assumes them being zero. So make sure IXP4XX_LATCH is - * the best value with the two least significant bits unset. - */ -#define IXP4XX_LATCH DIV_ROUND_CLOSEST(IXP4XX_TIMER_FREQ, \ - (IXP4XX_OST_RELOAD_MASK + 1) * HZ) * \ - (IXP4XX_OST_RELOAD_MASK + 1) - -static void __init ixp4xx_clocksource_init(void); -static void __init ixp4xx_clockevent_init(void); -static struct clock_event_device clockevent_ixp4xx; - /************************************************************************* * IXP4xx chipset I/O mapping *************************************************************************/ @@ -106,37 +91,11 @@ void __init ixp4xx_init_irq(void) (cpu_is_ixp46x() || cpu_is_ixp43x())); } -/************************************************************************* - * IXP4xx timer tick - * We use OS timer1 on the CPU for the timer tick and the timestamp - * counter as a source of real clock ticks to account for missed jiffies. - *************************************************************************/ - -static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evt = dev_id; - - /* Clear Pending Interrupt by writing '1' to it */ - *IXP4XX_OSST = IXP4XX_OSST_TIMER_1_PEND; - - evt->event_handler(evt); - - return IRQ_HANDLED; -} - void __init ixp4xx_timer_init(void) { - /* Reset/disable counter */ - *IXP4XX_OSRT1 = 0; - - /* Clear Pending Interrupt by writing '1' to it */ - *IXP4XX_OSST = IXP4XX_OSST_TIMER_1_PEND; - - /* Reset time-stamp counter */ - *IXP4XX_OSTS = 0; - - ixp4xx_clocksource_init(); - ixp4xx_clockevent_init(); + return ixp4xx_timer_setup(IXP4XX_TIMER_BASE_PHYS, + IRQ_IXP4XX_TIMER1, + IXP4XX_TIMER_FREQ); } static struct pxa2xx_udc_mach_info ixp4xx_udc_info; @@ -251,112 +210,8 @@ void __init ixp4xx_sys_init(void) ixp4xx_exp_bus_size >> 20); } -/* - * sched_clock() - */ -static u64 notrace ixp4xx_read_sched_clock(void) -{ - return *IXP4XX_OSTS; -} - -/* - * clocksource - */ - -static u64 ixp4xx_clocksource_read(struct clocksource *c) -{ - return *IXP4XX_OSTS; -} - unsigned long ixp4xx_timer_freq = IXP4XX_TIMER_FREQ; EXPORT_SYMBOL(ixp4xx_timer_freq); -static void __init ixp4xx_clocksource_init(void) -{ - sched_clock_register(ixp4xx_read_sched_clock, 32, ixp4xx_timer_freq); - - clocksource_mmio_init(NULL, "OSTS", ixp4xx_timer_freq, 200, 32, - ixp4xx_clocksource_read); -} - -/* - * clockevents - */ -static int ixp4xx_set_next_event(unsigned long evt, - struct clock_event_device *unused) -{ - unsigned long opts = *IXP4XX_OSRT1 & IXP4XX_OST_RELOAD_MASK; - - *IXP4XX_OSRT1 = (evt & ~IXP4XX_OST_RELOAD_MASK) | opts; - - return 0; -} - -static int ixp4xx_shutdown(struct clock_event_device *evt) -{ - unsigned long opts = *IXP4XX_OSRT1 & IXP4XX_OST_RELOAD_MASK; - unsigned long osrt = *IXP4XX_OSRT1 & ~IXP4XX_OST_RELOAD_MASK; - - opts &= ~IXP4XX_OST_ENABLE; - *IXP4XX_OSRT1 = osrt | opts; - return 0; -} - -static int ixp4xx_set_oneshot(struct clock_event_device *evt) -{ - unsigned long opts = IXP4XX_OST_ENABLE | IXP4XX_OST_ONE_SHOT; - unsigned long osrt = 0; - - /* period set by 'set next_event' */ - *IXP4XX_OSRT1 = osrt | opts; - return 0; -} - -static int ixp4xx_set_periodic(struct clock_event_device *evt) -{ - unsigned long opts = IXP4XX_OST_ENABLE; - unsigned long osrt = IXP4XX_LATCH & ~IXP4XX_OST_RELOAD_MASK; - - *IXP4XX_OSRT1 = osrt | opts; - return 0; -} - -static int ixp4xx_resume(struct clock_event_device *evt) -{ - unsigned long opts = *IXP4XX_OSRT1 & IXP4XX_OST_RELOAD_MASK; - unsigned long osrt = *IXP4XX_OSRT1 & ~IXP4XX_OST_RELOAD_MASK; - - opts |= IXP4XX_OST_ENABLE; - *IXP4XX_OSRT1 = osrt | opts; - return 0; -} - -static struct clock_event_device clockevent_ixp4xx = { - .name = "ixp4xx timer1", - .features = CLOCK_EVT_FEAT_PERIODIC | - CLOCK_EVT_FEAT_ONESHOT, - .rating = 200, - .set_state_shutdown = ixp4xx_shutdown, - .set_state_periodic = ixp4xx_set_periodic, - .set_state_oneshot = ixp4xx_set_oneshot, - .tick_resume = ixp4xx_resume, - .set_next_event = ixp4xx_set_next_event, -}; - -static void __init ixp4xx_clockevent_init(void) -{ - int ret; - - clockevent_ixp4xx.cpumask = cpumask_of(0); - clockevent_ixp4xx.irq = IRQ_IXP4XX_TIMER1; - ret = request_irq(IRQ_IXP4XX_TIMER1, ixp4xx_timer_interrupt, - IRQF_TIMER, "IXP4XX-TIMER1", &clockevent_ixp4xx); - if (ret) { - pr_crit("no timer IRQ\n"); - return; - } - clockevents_config_and_register(&clockevent_ixp4xx, IXP4XX_TIMER_FREQ, - 0xf, 0xfffffffe); -} void ixp4xx_restart(enum reboot_mode mode, const char *cmd) { -- cgit v1.2.3