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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-02 09:03:55 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-02 09:03:55 -0700 |
commit | a7726350e06401929eac0aa0677a5467106565fc (patch) | |
tree | e189513e5014bdfccd73a3af731a6b57733743fa /drivers/irqchip/irq-sunxi.c | |
parent | 4d26aa305414dbb33b3c32fb205b68004cda8ffc (diff) | |
parent | afcf7924ecab726dab0227188783c4a40d9f0eec (diff) | |
download | linux-a7726350e06401929eac0aa0677a5467106565fc.tar.bz2 |
Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanup from Olof Johansson:
"Here is a collection of cleanup patches. Among the pieces that stand
out are:
- The deletion of h720x platforms
- Split of at91 non-dt platforms to their own Kconfig file to keep
them separate
- General cleanups and refactoring of i.MX and MXS platforms
- Some restructuring of clock tables for OMAP
- Convertion of PMC driver for Tegra to dt-only
- Some renames of sunxi -> sun4i (Allwinner A10)
- ... plus a bunch of other stuff that I haven't mentioned"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (119 commits)
ARM: i.MX: remove unused ARCH_* configs
ARM i.MX53: remove platform ahci support
ARM: sunxi: Rework the restart code
irqchip: sunxi: Rename sunxi to sun4i
irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro
clocksource: sunxi: Rename sunxi to sun4i
clocksource: sunxi: make use of CLKSRC_OF
clocksource: sunxi: Cleanup the timer code
ARM: at91: remove trailing semicolon from macros
ARM: at91/setup: fix trivial typos
ARM: EXYNOS: remove "config EXYNOS_DEV_DRM"
ARM: EXYNOS: change the name of USB ohci header
ARM: SAMSUNG: Remove unnecessary code for dma
ARM: S3C24XX: Remove unused GPIO drive strength register definitions
ARM: OMAP4+: PM: Restore CPU power state to ON with clockdomain force wakeup method
ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2412
ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2410
ARM: S3C24XX: Removed unneeded dependency on ARCH_S3C24XX for boards
ARM: SAMSUNG: Fix typo "CONFIG_SAMSUNG_DEV_RTC"
ARM: S5P64X0: Fix typo "CONFIG_S5P64X0_SETUP_SDHCI"
...
Diffstat (limited to 'drivers/irqchip/irq-sunxi.c')
-rw-r--r-- | drivers/irqchip/irq-sunxi.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/drivers/irqchip/irq-sunxi.c b/drivers/irqchip/irq-sunxi.c deleted file mode 100644 index 10974fa42653..000000000000 --- a/drivers/irqchip/irq-sunxi.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Allwinner A1X SoCs IRQ chip driver. - * - * Copyright (C) 2012 Maxime Ripard - * - * Maxime Ripard <maxime.ripard@free-electrons.com> - * - * Based on code from - * Allwinner Technology Co., Ltd. <www.allwinnertech.com> - * Benn Huang <benn@allwinnertech.com> - * - * 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 <linux/io.h> -#include <linux/irq.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> - -#include <linux/irqchip/sunxi.h> - -#define SUNXI_IRQ_VECTOR_REG 0x00 -#define SUNXI_IRQ_PROTECTION_REG 0x08 -#define SUNXI_IRQ_NMI_CTRL_REG 0x0c -#define SUNXI_IRQ_PENDING_REG(x) (0x10 + 0x4 * x) -#define SUNXI_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x) -#define SUNXI_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x) -#define SUNXI_IRQ_MASK_REG(x) (0x50 + 0x4 * x) - -static void __iomem *sunxi_irq_base; -static struct irq_domain *sunxi_irq_domain; - -void sunxi_irq_ack(struct irq_data *irqd) -{ - unsigned int irq = irqd_to_hwirq(irqd); - unsigned int irq_off = irq % 32; - int reg = irq / 32; - u32 val; - - val = readl(sunxi_irq_base + SUNXI_IRQ_PENDING_REG(reg)); - writel(val | (1 << irq_off), - sunxi_irq_base + SUNXI_IRQ_PENDING_REG(reg)); -} - -static void sunxi_irq_mask(struct irq_data *irqd) -{ - unsigned int irq = irqd_to_hwirq(irqd); - unsigned int irq_off = irq % 32; - int reg = irq / 32; - u32 val; - - val = readl(sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg)); - writel(val & ~(1 << irq_off), - sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg)); -} - -static void sunxi_irq_unmask(struct irq_data *irqd) -{ - unsigned int irq = irqd_to_hwirq(irqd); - unsigned int irq_off = irq % 32; - int reg = irq / 32; - u32 val; - - val = readl(sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg)); - writel(val | (1 << irq_off), - sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg)); -} - -static struct irq_chip sunxi_irq_chip = { - .name = "sunxi_irq", - .irq_ack = sunxi_irq_ack, - .irq_mask = sunxi_irq_mask, - .irq_unmask = sunxi_irq_unmask, -}; - -static int sunxi_irq_map(struct irq_domain *d, unsigned int virq, - irq_hw_number_t hw) -{ - irq_set_chip_and_handler(virq, &sunxi_irq_chip, - handle_level_irq); - set_irq_flags(virq, IRQF_VALID | IRQF_PROBE); - - return 0; -} - -static struct irq_domain_ops sunxi_irq_ops = { - .map = sunxi_irq_map, - .xlate = irq_domain_xlate_onecell, -}; - -static int __init sunxi_of_init(struct device_node *node, - struct device_node *parent) -{ - sunxi_irq_base = of_iomap(node, 0); - if (!sunxi_irq_base) - panic("%s: unable to map IC registers\n", - node->full_name); - - /* Disable all interrupts */ - writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(0)); - writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(1)); - writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(2)); - - /* Mask all the interrupts */ - writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(0)); - writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(1)); - writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(2)); - - /* Clear all the pending interrupts */ - writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(0)); - writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(1)); - writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(2)); - - /* Enable protection mode */ - writel(0x01, sunxi_irq_base + SUNXI_IRQ_PROTECTION_REG); - - /* Configure the external interrupt source type */ - writel(0x00, sunxi_irq_base + SUNXI_IRQ_NMI_CTRL_REG); - - sunxi_irq_domain = irq_domain_add_linear(node, 3 * 32, - &sunxi_irq_ops, NULL); - if (!sunxi_irq_domain) - panic("%s: unable to create IRQ domain\n", node->full_name); - - return 0; -} - -static struct of_device_id sunxi_irq_dt_ids[] __initconst = { - { .compatible = "allwinner,sunxi-ic", .data = sunxi_of_init }, - { } -}; - -void __init sunxi_init_irq(void) -{ - of_irq_init(sunxi_irq_dt_ids); -} - -asmlinkage void __exception_irq_entry sunxi_handle_irq(struct pt_regs *regs) -{ - u32 irq, hwirq; - - hwirq = readl(sunxi_irq_base + SUNXI_IRQ_VECTOR_REG) >> 2; - while (hwirq != 0) { - irq = irq_find_mapping(sunxi_irq_domain, hwirq); - handle_IRQ(irq, regs); - hwirq = readl(sunxi_irq_base + SUNXI_IRQ_VECTOR_REG) >> 2; - } -} |