diff options
author | Arnd Bergmann <arnd@arndb.de> | 2012-05-14 16:29:32 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2012-05-14 16:29:32 +0200 |
commit | 815acebff7ac578970986ca3f0ff406c92a0e243 (patch) | |
tree | 651c411bbedeb0500ab9912766e992be3d5a8bab /arch/arm/mach-ux500/modem-irq-db5500.c | |
parent | 417f381c4568212275f0244500d7d5e1cdb5f99f (diff) | |
parent | 72fb92200d6c31b9982c06784e4bcff2f5b7d8b6 (diff) |
Merge branch 'ux500/delete-u5500' into next/soc
Conflicts:
arch/arm/mach-ux500/cache-l2x0.c
arch/arm/mach-ux500/clock.c
arch/arm/mach-ux500/cpu.c
arch/arm/mach-ux500/mbox-db5500.c
arch/arm/mach-ux500/platsmp.c
arch/arm/mach-ux500/timer.c
Resolve lots of identical conflicts between the removal of
u5500 and the addition of u8540.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-ux500/modem-irq-db5500.c')
-rw-r--r-- | arch/arm/mach-ux500/modem-irq-db5500.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/arch/arm/mach-ux500/modem-irq-db5500.c b/arch/arm/mach-ux500/modem-irq-db5500.c deleted file mode 100644 index 6b86416c94c..00000000000 --- a/arch/arm/mach-ux500/modem-irq-db5500.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2010 - * Author: Stefan Nilsson <stefan.xk.nilsson@stericsson.com> for ST-Ericsson. - * Author: Martin Persson <martin.persson@stericsson.com> for ST-Ericsson. - * License terms: GNU General Public License (GPL), version 2. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/slab.h> - -#include <mach/id.h> - -#define MODEM_INTCON_BASE_ADDR 0xBFFD3000 -#define MODEM_INTCON_SIZE 0xFFF - -#define DEST_IRQ41_OFFSET 0x2A4 -#define DEST_IRQ43_OFFSET 0x2AC -#define DEST_IRQ45_OFFSET 0x2B4 - -#define PRIO_IRQ41_OFFSET 0x6A4 -#define PRIO_IRQ43_OFFSET 0x6AC -#define PRIO_IRQ45_OFFSET 0x6B4 - -#define ALLOW_IRQ_OFFSET 0x104 - -#define MODEM_INTCON_CPU_NBR 0x1 -#define MODEM_INTCON_PRIO_HIGH 0x0 - -#define MODEM_INTCON_ALLOW_IRQ41 0x0200 -#define MODEM_INTCON_ALLOW_IRQ43 0x0800 -#define MODEM_INTCON_ALLOW_IRQ45 0x2000 - -#define MODEM_IRQ_REG_OFFSET 0x4 - -struct modem_irq { - void __iomem *modem_intcon_base; -}; - - -static void setup_modem_intcon(void __iomem *modem_intcon_base) -{ - /* IC_DESTINATION_BASE_ARRAY - Which CPU to receive the IRQ */ - writel(MODEM_INTCON_CPU_NBR, modem_intcon_base + DEST_IRQ41_OFFSET); - writel(MODEM_INTCON_CPU_NBR, modem_intcon_base + DEST_IRQ43_OFFSET); - writel(MODEM_INTCON_CPU_NBR, modem_intcon_base + DEST_IRQ45_OFFSET); - - /* IC_PRIORITY_BASE_ARRAY - IRQ priority in modem IRQ controller */ - writel(MODEM_INTCON_PRIO_HIGH, modem_intcon_base + PRIO_IRQ41_OFFSET); - writel(MODEM_INTCON_PRIO_HIGH, modem_intcon_base + PRIO_IRQ43_OFFSET); - writel(MODEM_INTCON_PRIO_HIGH, modem_intcon_base + PRIO_IRQ45_OFFSET); - - /* IC_ALLOW_ARRAY - IRQ enable */ - writel(MODEM_INTCON_ALLOW_IRQ41 | - MODEM_INTCON_ALLOW_IRQ43 | - MODEM_INTCON_ALLOW_IRQ45, - modem_intcon_base + ALLOW_IRQ_OFFSET); -} - -static irqreturn_t modem_cpu_irq_handler(int irq, void *data) -{ - int real_irq; - int virt_irq; - struct modem_irq *mi = (struct modem_irq *)data; - - /* Read modem side IRQ number from modem IRQ controller */ - real_irq = readl(mi->modem_intcon_base + MODEM_IRQ_REG_OFFSET) & 0xFF; - virt_irq = IRQ_MODEM_EVENTS_BASE + real_irq; - - pr_debug("modem_irq: Worker read addr 0x%X and got value 0x%X " - "which will be 0x%X (%d) which translates to " - "virtual IRQ 0x%X (%d)!\n", - (u32)mi->modem_intcon_base + MODEM_IRQ_REG_OFFSET, - real_irq, - real_irq & 0xFF, - real_irq & 0xFF, - virt_irq, - virt_irq); - - if (virt_irq != 0) - generic_handle_irq(virt_irq); - - pr_debug("modem_irq: Done handling virtual IRQ %d!\n", virt_irq); - - return IRQ_HANDLED; -} - -static void create_virtual_irq(int irq, struct irq_chip *modem_irq_chip) -{ - irq_set_chip_and_handler(irq, modem_irq_chip, handle_simple_irq); - set_irq_flags(irq, IRQF_VALID); - - pr_debug("modem_irq: Created virtual IRQ %d\n", irq); -} - -static int modem_irq_init(void) -{ - int err; - static struct irq_chip modem_irq_chip; - struct modem_irq *mi; - - if (!cpu_is_u5500()) - return -ENODEV; - - pr_info("modem_irq: Set up IRQ handler for incoming modem IRQ %d\n", - IRQ_DB5500_MODEM); - - mi = kmalloc(sizeof(struct modem_irq), GFP_KERNEL); - if (!mi) { - pr_err("modem_irq: Could not allocate device\n"); - return -ENOMEM; - } - - mi->modem_intcon_base = - ioremap(MODEM_INTCON_BASE_ADDR, MODEM_INTCON_SIZE); - pr_debug("modem_irq: ioremapped modem_intcon_base from " - "phy 0x%x to virt 0x%x\n", MODEM_INTCON_BASE_ADDR, - (u32)mi->modem_intcon_base); - - setup_modem_intcon(mi->modem_intcon_base); - - modem_irq_chip = dummy_irq_chip; - modem_irq_chip.name = "modem_irq"; - - /* Create the virtual IRQ:s needed */ - create_virtual_irq(MBOX_PAIR0_VIRT_IRQ, &modem_irq_chip); - create_virtual_irq(MBOX_PAIR1_VIRT_IRQ, &modem_irq_chip); - create_virtual_irq(MBOX_PAIR2_VIRT_IRQ, &modem_irq_chip); - - err = request_threaded_irq(IRQ_DB5500_MODEM, NULL, - modem_cpu_irq_handler, IRQF_ONESHOT, - "modem_irq", mi); - if (err) - pr_err("modem_irq: Could not register IRQ %d\n", - IRQ_DB5500_MODEM); - - return 0; -} - -arch_initcall(modem_irq_init); |