diff options
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx23.dtsi | 5 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx28.dtsi | 5 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/icoll.c | 63 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/include/mach/common.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/include/mach/entry-macro.S | 35 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/include/mach/irqs.h | 32 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/mach-mxs.c | 39 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/timer.c | 13 | ||||
| -rw-r--r-- | drivers/clk/mxs/clk-imx23.c | 2 | ||||
| -rw-r--r-- | drivers/clk/mxs/clk-imx28.c | 2 | ||||
| -rw-r--r-- | drivers/gpio/gpio-mxs.c | 48 |
12 files changed, 112 insertions, 137 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0e8e536..ad790fc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -485,7 +485,9 @@ config ARCH_MXS select CLKSRC_MMIO select COMMON_CLK select HAVE_CLK_PREPARE + select MULTI_IRQ_HANDLER select PINCTRL + select SPARSE_IRQ select USE_OF help Support for Freescale MXS-based family of processors diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi index 3f3b6fc..9ca4ca7 100644 --- a/arch/arm/boot/dts/imx23.dtsi +++ b/arch/arm/boot/dts/imx23.dtsi @@ -43,7 +43,7 @@ ranges; icoll: interrupt-controller@80000000 { - compatible = "fsl,imx23-icoll", "fsl,mxs-icoll"; + compatible = "fsl,imx23-icoll", "fsl,icoll"; interrupt-controller; #interrupt-cells = <1>; reg = <0x80000000 0x2000>; @@ -407,8 +407,9 @@ }; timrot@80068000 { + compatible = "fsl,imx23-timrot", "fsl,timrot"; reg = <0x80068000 0x2000>; - status = "disabled"; + interrupts = <28 29 30 31>; }; auart0: serial@8006c000 { diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi index 724147e..59fbfba 100644 --- a/arch/arm/boot/dts/imx28.dtsi +++ b/arch/arm/boot/dts/imx28.dtsi @@ -52,7 +52,7 @@ ranges; icoll: interrupt-controller@80000000 { - compatible = "fsl,imx28-icoll", "fsl,mxs-icoll"; + compatible = "fsl,imx28-icoll", "fsl,icoll"; interrupt-controller; #interrupt-cells = <1>; reg = <0x80000000 0x2000>; @@ -787,8 +787,9 @@ }; timrot@80068000 { + compatible = "fsl,imx28-timrot", "fsl,timrot"; reg = <0x80068000 0x2000>; - status = "disabled"; + interrupts = <48 49 50 51>; }; auart0: serial@8006a000 { diff --git a/arch/arm/mach-mxs/icoll.c b/arch/arm/mach-mxs/icoll.c index 23ca9d0..8fb23af 100644 --- a/arch/arm/mach-mxs/icoll.c +++ b/arch/arm/mach-mxs/icoll.c @@ -19,20 +19,27 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/io.h> - +#include <linux/of.h> +#include <linux/of_irq.h> +#include <asm/exception.h> #include <mach/mxs.h> #include <mach/common.h> #define HW_ICOLL_VECTOR 0x0000 #define HW_ICOLL_LEVELACK 0x0010 #define HW_ICOLL_CTRL 0x0020 +#define HW_ICOLL_STAT_OFFSET 0x0070 #define HW_ICOLL_INTERRUPTn_SET(n) (0x0124 + (n) * 0x10) #define HW_ICOLL_INTERRUPTn_CLR(n) (0x0128 + (n) * 0x10) #define BM_ICOLL_INTERRUPTn_ENABLE 0x00000004 #define BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0 0x1 +#define ICOLL_NUM_IRQS 128 + static void __iomem *icoll_base = MXS_IO_ADDRESS(MXS_ICOLL_BASE_ADDR); +static struct irq_domain *icoll_domain; static void icoll_ack_irq(struct irq_data *d) { @@ -48,13 +55,13 @@ static void icoll_ack_irq(struct irq_data *d) static void icoll_mask_irq(struct irq_data *d) { __raw_writel(BM_ICOLL_INTERRUPTn_ENABLE, - icoll_base + HW_ICOLL_INTERRUPTn_CLR(d->irq)); + icoll_base + HW_ICOLL_INTERRUPTn_CLR(d->hwirq)); } static void icoll_unmask_irq(struct irq_data *d) { __raw_writel(BM_ICOLL_INTERRUPTn_ENABLE, - icoll_base + HW_ICOLL_INTERRUPTn_SET(d->irq)); + icoll_base + HW_ICOLL_INTERRUPTn_SET(d->hwirq)); } static struct irq_chip mxs_icoll_chip = { @@ -63,18 +70,56 @@ static struct irq_chip mxs_icoll_chip = { .irq_unmask = icoll_unmask_irq, }; -void __init icoll_init_irq(void) +asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs) { - int i; + u32 irqnr; + + do { + irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET); + if (irqnr != 0x7f) { + __raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR); + irqnr = irq_find_mapping(icoll_domain, irqnr); + handle_IRQ(irqnr, regs); + continue; + } + break; + } while (1); +} + +static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq, + irq_hw_number_t hw) +{ + irq_set_chip_and_handler(virq, &mxs_icoll_chip, handle_level_irq); + set_irq_flags(virq, IRQF_VALID); + + return 0; +} +static struct irq_domain_ops icoll_irq_domain_ops = { + .map = icoll_irq_domain_map, + .xlate = irq_domain_xlate_onecell, +}; + +void __init icoll_of_init(struct device_node *np, + struct device_node *interrupt_parent) +{ /* * Interrupt Collector reset, which initializes the priority * for each irq to level 0. */ mxs_reset_block(icoll_base + HW_ICOLL_CTRL); - for (i = 0; i < MXS_INTERNAL_IRQS; i++) { - irq_set_chip_and_handler(i, &mxs_icoll_chip, handle_level_irq); - set_irq_flags(i, IRQF_VALID); - } + icoll_domain = irq_domain_add_linear(np, ICOLL_NUM_IRQS, + &icoll_irq_domain_ops, NULL); + WARN_ON(!icoll_domain); +} + +static const struct of_device_id icoll_of_match[] __initconst = { + {.compatible = "fsl,icoll", .data = icoll_of_init}, + { /* sentinel */ } +}; + +void __init icoll_init_irq(void) +{ + of_irq_init(icoll_of_match); } diff --git a/arch/arm/mach-mxs/include/mach/common.h b/arch/arm/mach-mxs/include/mach/common.h index 4dec795..be5a9c9 100644 --- a/arch/arm/mach-mxs/include/mach/common.h +++ b/arch/arm/mach-mxs/include/mach/common.h @@ -13,7 +13,7 @@ extern const u32 *mxs_get_ocotp(void); extern int mxs_reset_block(void __iomem *); -extern void mxs_timer_init(int); +extern void mxs_timer_init(void); extern void mxs_restart(char, const char *); extern int mxs_saif_clkmux_select(unsigned int clkmux); @@ -24,5 +24,6 @@ extern int mx28_clocks_init(void); extern void mx28_map_io(void); extern void icoll_init_irq(void); +extern void icoll_handle_irq(struct pt_regs *); #endif /* __MACH_MXS_COMMON_H__ */ diff --git a/arch/arm/mach-mxs/include/mach/entry-macro.S b/arch/arm/mach-mxs/include/mach/entry-macro.S deleted file mode 100644 index 0c14259..0000000 --- a/arch/arm/mach-mxs/include/mach/entry-macro.S +++ /dev/null @@ -1,35 +0,0 @@ -/* - * Low-level IRQ helper macros for Freescale MXS-based - * - * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <mach/mxs.h> - -#define MXS_ICOLL_VBASE MXS_IO_ADDRESS(MXS_ICOLL_BASE_ADDR) -#define HW_ICOLL_STAT_OFFSET 0x70 - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - ldr \irqnr, [\base, #HW_ICOLL_STAT_OFFSET] - cmp \irqnr, #0x7F - strne \irqnr, [\base] - moveqs \irqnr, #0 - .endm - - .macro get_irqnr_preamble, base, tmp - ldr \base, =MXS_ICOLL_VBASE - .endm diff --git a/arch/arm/mach-mxs/include/mach/irqs.h b/arch/arm/mach-mxs/include/mach/irqs.h deleted file mode 100644 index f771039..0000000 --- a/arch/arm/mach-mxs/include/mach/irqs.h +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. - */ - -/* - * 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 __MACH_MXS_IRQS_H__ -#define __MACH_MXS_IRQS_H__ - -#define MXS_INTERNAL_IRQS 128 - -#define MXS_GPIO_IRQ_START MXS_INTERNAL_IRQS - -/* the maximum for MXS-based */ -#define MXS_GPIO_IRQS (32 * 5) - -/* - * The next 16 interrupts are for board specific purposes. Since - * the kernel can only run on one machine at a time, we can re-use - * these. If you need more, increase MXS_BOARD_IRQS, but keep it - * within sensible limits. - */ -#define MXS_BOARD_IRQ_START (MXS_GPIO_IRQ_START + MXS_GPIO_IRQS) -#define MXS_BOARD_IRQS 16 - -#define NR_IRQS (MXS_BOARD_IRQ_START + MXS_BOARD_IRQS) - -#endif /* __MACH_MXS_IRQS_H__ */ diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index cf43e5e..4748ec5 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -17,10 +17,8 @@ #include <linux/err.h> #include <linux/gpio.h> #include <linux/init.h> -#include <linux/irqdomain.h> #include <linux/micrel_phy.h> #include <linux/mxsfb.h> -#include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/phy.h> #include <linux/pinctrl/consumer.h> @@ -141,37 +139,6 @@ static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = { { /* sentinel */ } }; -static int __init mxs_icoll_add_irq_domain(struct device_node *np, - struct device_node *interrupt_parent) -{ - irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL); - - return 0; -} - -static int __init mxs_gpio_add_irq_domain(struct device_node *np, - struct device_node *interrupt_parent) -{ - static int gpio_irq_base = MXS_GPIO_IRQ_START; - - irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL); - gpio_irq_base += 32; - - return 0; -} - -static const struct of_device_id mxs_irq_match[] __initconst = { - { .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, }, - { .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, }, - { /* sentinel */ } -}; - -static void __init mxs_dt_init_irq(void) -{ - icoll_init_irq(); - of_irq_init(mxs_irq_match); -} - static void __init imx23_timer_init(void) { mx23_clocks_init(); @@ -421,7 +388,8 @@ static const char *imx28_dt_compat[] __initdata = { DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)") .map_io = mx23_map_io, - .init_irq = mxs_dt_init_irq, + .init_irq = icoll_init_irq, + .handle_irq = icoll_handle_irq, .timer = &imx23_timer, .init_machine = mxs_machine_init, .dt_compat = imx23_dt_compat, @@ -430,7 +398,8 @@ MACHINE_END DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)") .map_io = mx28_map_io, - .init_irq = mxs_dt_init_irq, + .init_irq = icoll_init_irq, + .handle_irq = icoll_handle_irq, .timer = &imx28_timer, .init_machine = mxs_machine_init, .dt_compat = imx28_dt_compat, diff --git a/arch/arm/mach-mxs/timer.c b/arch/arm/mach-mxs/timer.c index 02d36de..7c37926 100644 --- a/arch/arm/mach-mxs/timer.c +++ b/arch/arm/mach-mxs/timer.c @@ -25,6 +25,8 @@ #include <linux/irq.h> #include <linux/clockchips.h> #include <linux/clk.h> +#include <linux/of.h> +#include <linux/of_irq.h> #include <asm/mach/time.h> #include <mach/mxs.h> @@ -244,9 +246,17 @@ static int __init mxs_clocksource_init(struct clk *timer_clk) return 0; } -void __init mxs_timer_init(int irq) +void __init mxs_timer_init(void) { + struct device_node *np; struct clk *timer_clk; + int irq; + + np = of_find_compatible_node(NULL, NULL, "fsl,timrot"); + if (!np) { + pr_err("%s: failed find timrot node\n", __func__); + return; + } timer_clk = clk_get_sys("timrot", NULL); if (IS_ERR(timer_clk)) { @@ -295,5 +305,6 @@ void __init mxs_timer_init(int irq) mxs_clockevent_init(timer_clk); /* Make irqs happen */ + irq = irq_of_parse_and_map(np, 0); setup_irq(irq, &mxs_timer_irq); } diff --git a/drivers/clk/mxs/clk-imx23.c b/drivers/clk/mxs/clk-imx23.c index 9f6d155..f00dffb 100644 --- a/drivers/clk/mxs/clk-imx23.c +++ b/drivers/clk/mxs/clk-imx23.c @@ -165,7 +165,7 @@ int __init mx23_clocks_init(void) for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); - mxs_timer_init(MX23_INT_TIMER0); + mxs_timer_init(); return 0; } diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c index 613e76f..42978f1b 100644 --- a/drivers/clk/mxs/clk-imx28.c +++ b/drivers/clk/mxs/clk-imx28.c @@ -244,7 +244,7 @@ int __init mx28_clocks_init(void) for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); - mxs_timer_init(MX28_INT_TIMER0); + mxs_timer_init(); return 0; } diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c index 39e4956..796fb13 100644 --- a/drivers/gpio/gpio-mxs.c +++ b/drivers/gpio/gpio-mxs.c @@ -24,6 +24,7 @@ #include <linux/interrupt.h> #include <linux/io.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/gpio.h> #include <linux/of.h> #include <linux/of_address.h> @@ -52,8 +53,6 @@ #define GPIO_INT_LEV_MASK (1 << 0) #define GPIO_INT_POL_MASK (1 << 1) -#define irq_to_gpio(irq) ((irq) - MXS_GPIO_IRQ_START) - enum mxs_gpio_id { IMX23_GPIO, IMX28_GPIO, @@ -63,7 +62,7 @@ struct mxs_gpio_port { void __iomem *base; int id; int irq; - int virtual_irq_start; + struct irq_domain *domain; struct bgpio_chip bgc; enum mxs_gpio_id devid; }; @@ -82,8 +81,7 @@ static inline int is_imx28_gpio(struct mxs_gpio_port *port) static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type) { - u32 gpio = irq_to_gpio(d->irq); - u32 pin_mask = 1 << (gpio & 31); + u32 pin_mask = 1 << d->hwirq; struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct mxs_gpio_port *port = gc->private; void __iomem *pin_addr; @@ -120,7 +118,7 @@ static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type) else writel(pin_mask, pin_addr + MXS_CLR); - writel(1 << (gpio & 0x1f), + writel(pin_mask, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR); return 0; @@ -131,7 +129,6 @@ static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc) { u32 irq_stat; struct mxs_gpio_port *port = irq_get_handler_data(irq); - u32 gpio_irq_no_base = port->virtual_irq_start; desc->irq_data.chip->irq_ack(&desc->irq_data); @@ -140,7 +137,7 @@ static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc) while (irq_stat != 0) { int irqoffset = fls(irq_stat) - 1; - generic_handle_irq(gpio_irq_no_base + irqoffset); + generic_handle_irq(irq_find_mapping(port->domain, irqoffset)); irq_stat &= ~(1 << irqoffset); } } @@ -167,12 +164,12 @@ static int mxs_gpio_set_wake_irq(struct irq_data *d, unsigned int enable) return 0; } -static void __init mxs_gpio_init_gc(struct mxs_gpio_port *port) +static void __init mxs_gpio_init_gc(struct mxs_gpio_port *port, int irq_base) { struct irq_chip_generic *gc; struct irq_chip_type *ct; - gc = irq_alloc_generic_chip("gpio-mxs", 1, port->virtual_irq_start, + gc = irq_alloc_generic_chip("gpio-mxs", 1, irq_base, port->base, handle_level_irq); gc->private = port; @@ -194,7 +191,7 @@ static int mxs_gpio_to_irq(struct gpio_chip *gc, unsigned offset) struct mxs_gpio_port *port = container_of(bgc, struct mxs_gpio_port, bgc); - return port->virtual_irq_start + offset; + return irq_find_mapping(port->domain, offset); } static struct platform_device_id mxs_gpio_ids[] = { @@ -226,6 +223,7 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev) static void __iomem *base; struct mxs_gpio_port *port; struct resource *iores = NULL; + int irq_base; int err; port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL); @@ -241,7 +239,6 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev) port->id = pdev->id; port->devid = pdev->id_entry->driver_data; } - port->virtual_irq_start = MXS_GPIO_IRQ_START + port->id * 32; port->irq = platform_get_irq(pdev, 0); if (port->irq < 0) @@ -275,8 +272,19 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev) /* clear address has to be used to clear IRQSTAT bits */ writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR); + irq_base = irq_alloc_descs(-1, 0, 32, numa_node_id()); + if (irq_base < 0) + return irq_base; + + port->domain = irq_domain_add_legacy(np, 32, irq_base, 0, + &irq_domain_simple_ops, NULL); + if (!port->domain) { + err = -ENODEV; + goto out_irqdesc_free; + } + /* gpio-mxs can be a generic irq chip */ - mxs_gpio_init_gc(port); + mxs_gpio_init_gc(port, irq_base); /* setup one handler for each entry */ irq_set_chained_handler(port->irq, mxs_gpio_irq_handler); @@ -287,18 +295,22 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev) port->base + PINCTRL_DOUT(port), NULL, port->base + PINCTRL_DOE(port), NULL, 0); if (err) - return err; + goto out_irqdesc_free; port->bgc.gc.to_irq = mxs_gpio_to_irq; port->bgc.gc.base = port->id * 32; err = gpiochip_add(&port->bgc.gc); - if (err) { - bgpio_remove(&port->bgc); - return err; - } + if (err) + goto out_bgpio_remove; return 0; + +out_bgpio_remove: + bgpio_remove(&port->bgc); +out_irqdesc_free: + irq_free_descs(irq_base, 32); + return err; } static struct platform_driver mxs_gpio_driver = { |