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Diffstat (limited to 'arch/mips/pnx833x/common/interrupts.c')
-rw-r--r--arch/mips/pnx833x/common/interrupts.c303
1 files changed, 0 insertions, 303 deletions
diff --git a/arch/mips/pnx833x/common/interrupts.c b/arch/mips/pnx833x/common/interrupts.c
deleted file mode 100644
index 2fbbabcac386..000000000000
--- a/arch/mips/pnx833x/common/interrupts.c
+++ /dev/null
@@ -1,303 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * interrupts.c: Interrupt mappings for PNX833X.
- *
- * Copyright 2008 NXP Semiconductors
- * Chris Steel <chris.steel@nxp.com>
- * Daniel Laird <daniel.j.laird@nxp.com>
- */
-#include <linux/kernel.h>
-#include <linux/irq.h>
-#include <linux/hardirq.h>
-#include <linux/interrupt.h>
-#include <asm/mipsregs.h>
-#include <asm/irq_cpu.h>
-#include <asm/setup.h>
-#include <irq.h>
-#include <irq-mapping.h>
-#include <gpio.h>
-
-static int mips_cpu_timer_irq;
-
-static const unsigned int irq_prio[PNX833X_PIC_NUM_IRQ] =
-{
- 0, /* unused */
- 4, /* PNX833X_PIC_I2C0_INT 1 */
- 4, /* PNX833X_PIC_I2C1_INT 2 */
- 1, /* PNX833X_PIC_UART0_INT 3 */
- 1, /* PNX833X_PIC_UART1_INT 4 */
- 6, /* PNX833X_PIC_TS_IN0_DV_INT 5 */
- 6, /* PNX833X_PIC_TS_IN0_DMA_INT 6 */
- 7, /* PNX833X_PIC_GPIO_INT 7 */
- 4, /* PNX833X_PIC_AUDIO_DEC_INT 8 */
- 5, /* PNX833X_PIC_VIDEO_DEC_INT 9 */
- 4, /* PNX833X_PIC_CONFIG_INT 10 */
- 4, /* PNX833X_PIC_AOI_INT 11 */
- 9, /* PNX833X_PIC_SYNC_INT 12 */
- 9, /* PNX8335_PIC_SATA_INT 13 */
- 4, /* PNX833X_PIC_OSD_INT 14 */
- 9, /* PNX833X_PIC_DISP1_INT 15 */
- 4, /* PNX833X_PIC_DEINTERLACER_INT 16 */
- 9, /* PNX833X_PIC_DISPLAY2_INT 17 */
- 4, /* PNX833X_PIC_VC_INT 18 */
- 4, /* PNX833X_PIC_SC_INT 19 */
- 9, /* PNX833X_PIC_IDE_INT 20 */
- 9, /* PNX833X_PIC_IDE_DMA_INT 21 */
- 6, /* PNX833X_PIC_TS_IN1_DV_INT 22 */
- 6, /* PNX833X_PIC_TS_IN1_DMA_INT 23 */
- 4, /* PNX833X_PIC_SGDX_DMA_INT 24 */
- 4, /* PNX833X_PIC_TS_OUT_INT 25 */
- 4, /* PNX833X_PIC_IR_INT 26 */
- 3, /* PNX833X_PIC_VMSP1_INT 27 */
- 3, /* PNX833X_PIC_VMSP2_INT 28 */
- 4, /* PNX833X_PIC_PIBC_INT 29 */
- 4, /* PNX833X_PIC_TS_IN0_TRD_INT 30 */
- 4, /* PNX833X_PIC_SGDX_TPD_INT 31 */
- 5, /* PNX833X_PIC_USB_INT 32 */
- 4, /* PNX833X_PIC_TS_IN1_TRD_INT 33 */
- 4, /* PNX833X_PIC_CLOCK_INT 34 */
- 4, /* PNX833X_PIC_SGDX_PARSER_INT 35 */
- 4, /* PNX833X_PIC_VMSP_DMA_INT 36 */
-#if defined(CONFIG_SOC_PNX8335)
- 4, /* PNX8335_PIC_MIU_INT 37 */
- 4, /* PNX8335_PIC_AVCHIP_IRQ_INT 38 */
- 9, /* PNX8335_PIC_SYNC_HD_INT 39 */
- 9, /* PNX8335_PIC_DISP_HD_INT 40 */
- 9, /* PNX8335_PIC_DISP_SCALER_INT 41 */
- 4, /* PNX8335_PIC_OSD_HD1_INT 42 */
- 4, /* PNX8335_PIC_DTL_WRITER_Y_INT 43 */
- 4, /* PNX8335_PIC_DTL_WRITER_C_INT 44 */
- 4, /* PNX8335_PIC_DTL_EMULATOR_Y_IR_INT 45 */
- 4, /* PNX8335_PIC_DTL_EMULATOR_C_IR_INT 46 */
- 4, /* PNX8335_PIC_DENC_TTX_INT 47 */
- 4, /* PNX8335_PIC_MMI_SIF0_INT 48 */
- 4, /* PNX8335_PIC_MMI_SIF1_INT 49 */
- 4, /* PNX8335_PIC_MMI_CDMMU_INT 50 */
- 4, /* PNX8335_PIC_PIBCS_INT 51 */
- 12, /* PNX8335_PIC_ETHERNET_INT 52 */
- 3, /* PNX8335_PIC_VMSP1_0_INT 53 */
- 3, /* PNX8335_PIC_VMSP1_1_INT 54 */
- 4, /* PNX8335_PIC_VMSP1_DMA_INT 55 */
- 4, /* PNX8335_PIC_TDGR_DE_INT 56 */
- 4, /* PNX8335_PIC_IR1_IRQ_INT 57 */
-#endif
-};
-
-static void pnx833x_timer_dispatch(void)
-{
- do_IRQ(mips_cpu_timer_irq);
-}
-
-static void pic_dispatch(void)
-{
- unsigned int irq = PNX833X_REGFIELD(PIC_INT_SRC, INT_SRC);
-
- if ((irq >= 1) && (irq < (PNX833X_PIC_NUM_IRQ))) {
- unsigned long priority = PNX833X_PIC_INT_PRIORITY;
- PNX833X_PIC_INT_PRIORITY = irq_prio[irq];
-
- if (irq == PNX833X_PIC_GPIO_INT) {
- unsigned long mask = PNX833X_PIO_INT_STATUS & PNX833X_PIO_INT_ENABLE;
- int pin;
- while ((pin = ffs(mask & 0xffff))) {
- pin -= 1;
- do_IRQ(PNX833X_GPIO_IRQ_BASE + pin);
- mask &= ~(1 << pin);
- }
- } else {
- do_IRQ(irq + PNX833X_PIC_IRQ_BASE);
- }
-
- PNX833X_PIC_INT_PRIORITY = priority;
- } else {
- printk(KERN_ERR "plat_irq_dispatch: unexpected irq %u\n", irq);
- }
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
- unsigned int pending = read_c0_status() & read_c0_cause();
-
- if (pending & STATUSF_IP4)
- pic_dispatch();
- else if (pending & STATUSF_IP7)
- do_IRQ(PNX833X_TIMER_IRQ);
- else
- spurious_interrupt();
-}
-
-static inline void pnx833x_hard_enable_pic_irq(unsigned int irq)
-{
- /* Currently we do this by setting IRQ priority to 1.
- If priority support is being implemented, 1 should be repalced
- by a better value. */
- PNX833X_PIC_INT_REG(irq) = irq_prio[irq];
-}
-
-static inline void pnx833x_hard_disable_pic_irq(unsigned int irq)
-{
- /* Disable IRQ by writing setting it's priority to 0 */
- PNX833X_PIC_INT_REG(irq) = 0;
-}
-
-static DEFINE_RAW_SPINLOCK(pnx833x_irq_lock);
-
-static unsigned int pnx833x_startup_pic_irq(unsigned int irq)
-{
- unsigned long flags;
- unsigned int pic_irq = irq - PNX833X_PIC_IRQ_BASE;
-
- raw_spin_lock_irqsave(&pnx833x_irq_lock, flags);
- pnx833x_hard_enable_pic_irq(pic_irq);
- raw_spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
- return 0;
-}
-
-static void pnx833x_enable_pic_irq(struct irq_data *d)
-{
- unsigned long flags;
- unsigned int pic_irq = d->irq - PNX833X_PIC_IRQ_BASE;
-
- raw_spin_lock_irqsave(&pnx833x_irq_lock, flags);
- pnx833x_hard_enable_pic_irq(pic_irq);
- raw_spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
-}
-
-static void pnx833x_disable_pic_irq(struct irq_data *d)
-{
- unsigned long flags;
- unsigned int pic_irq = d->irq - PNX833X_PIC_IRQ_BASE;
-
- raw_spin_lock_irqsave(&pnx833x_irq_lock, flags);
- pnx833x_hard_disable_pic_irq(pic_irq);
- raw_spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
-}
-
-static DEFINE_RAW_SPINLOCK(pnx833x_gpio_pnx833x_irq_lock);
-
-static void pnx833x_enable_gpio_irq(struct irq_data *d)
-{
- int pin = d->irq - PNX833X_GPIO_IRQ_BASE;
- unsigned long flags;
- raw_spin_lock_irqsave(&pnx833x_gpio_pnx833x_irq_lock, flags);
- pnx833x_gpio_enable_irq(pin);
- raw_spin_unlock_irqrestore(&pnx833x_gpio_pnx833x_irq_lock, flags);
-}
-
-static void pnx833x_disable_gpio_irq(struct irq_data *d)
-{
- int pin = d->irq - PNX833X_GPIO_IRQ_BASE;
- unsigned long flags;
- raw_spin_lock_irqsave(&pnx833x_gpio_pnx833x_irq_lock, flags);
- pnx833x_gpio_disable_irq(pin);
- raw_spin_unlock_irqrestore(&pnx833x_gpio_pnx833x_irq_lock, flags);
-}
-
-static int pnx833x_set_type_gpio_irq(struct irq_data *d, unsigned int flow_type)
-{
- int pin = d->irq - PNX833X_GPIO_IRQ_BASE;
- int gpio_mode;
-
- switch (flow_type) {
- case IRQ_TYPE_EDGE_RISING:
- gpio_mode = GPIO_INT_EDGE_RISING;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- gpio_mode = GPIO_INT_EDGE_FALLING;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- gpio_mode = GPIO_INT_EDGE_BOTH;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- gpio_mode = GPIO_INT_LEVEL_HIGH;
- break;
- case IRQ_TYPE_LEVEL_LOW:
- gpio_mode = GPIO_INT_LEVEL_LOW;
- break;
- default:
- gpio_mode = GPIO_INT_NONE;
- break;
- }
-
- pnx833x_gpio_setup_irq(gpio_mode, pin);
-
- return 0;
-}
-
-static struct irq_chip pnx833x_pic_irq_type = {
- .name = "PNX-PIC",
- .irq_enable = pnx833x_enable_pic_irq,
- .irq_disable = pnx833x_disable_pic_irq,
-};
-
-static struct irq_chip pnx833x_gpio_irq_type = {
- .name = "PNX-GPIO",
- .irq_enable = pnx833x_enable_gpio_irq,
- .irq_disable = pnx833x_disable_gpio_irq,
- .irq_set_type = pnx833x_set_type_gpio_irq,
-};
-
-void __init arch_init_irq(void)
-{
- unsigned int irq;
-
- /* setup standard internal cpu irqs */
- mips_cpu_irq_init();
-
- /* Set IRQ information in irq_desc */
- for (irq = PNX833X_PIC_IRQ_BASE; irq < (PNX833X_PIC_IRQ_BASE + PNX833X_PIC_NUM_IRQ); irq++) {
- pnx833x_hard_disable_pic_irq(irq);
- irq_set_chip_and_handler(irq, &pnx833x_pic_irq_type,
- handle_simple_irq);
- }
-
- for (irq = PNX833X_GPIO_IRQ_BASE; irq < (PNX833X_GPIO_IRQ_BASE + PNX833X_GPIO_NUM_IRQ); irq++)
- irq_set_chip_and_handler(irq, &pnx833x_gpio_irq_type,
- handle_simple_irq);
-
- /* Set PIC priority limiter register to 0 */
- PNX833X_PIC_INT_PRIORITY = 0;
-
- /* Setup GPIO IRQ dispatching */
- pnx833x_startup_pic_irq(PNX833X_PIC_GPIO_INT);
-
- /* Enable PIC IRQs (HWIRQ2) */
- if (cpu_has_vint)
- set_vi_handler(4, pic_dispatch);
-
- write_c0_status(read_c0_status() | IE_IRQ2);
-}
-
-unsigned int get_c0_compare_int(void)
-{
- if (cpu_has_vint)
- set_vi_handler(cp0_compare_irq, pnx833x_timer_dispatch);
-
- mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
- return mips_cpu_timer_irq;
-}
-
-void __init plat_time_init(void)
-{
- /* calculate mips_hpt_frequency based on PNX833X_CLOCK_CPUCP_CTL reg */
-
- extern unsigned long mips_hpt_frequency;
- unsigned long reg = PNX833X_CLOCK_CPUCP_CTL;
-
- if (!(PNX833X_BIT(reg, CLOCK_CPUCP_CTL, EXIT_RESET))) {
- /* Functional clock is disabled so use crystal frequency */
- mips_hpt_frequency = 25;
- } else {
-#if defined(CONFIG_SOC_PNX8335)
- /* Functional clock is enabled, so get clock multiplier */
- mips_hpt_frequency = 90 + (10 * PNX8335_REGFIELD(CLOCK_PLL_CPU_CTL, FREQ));
-#else
- static const unsigned long int freq[4] = {240, 160, 120, 80};
- mips_hpt_frequency = freq[PNX833X_FIELD(reg, CLOCK_CPUCP_CTL, DIV_CLOCK)];
-#endif
- }
-
- printk(KERN_INFO "CPU clock is %ld MHz\n", mips_hpt_frequency);
-
- mips_hpt_frequency *= 500000;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 16:50:47 +0000