projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/arch/sh/boards/renesas/hs7751rvoip/irq.c | |
| 3 | * | |
| 4 | * Copyright (C) 2000 Kazumoto Kojima | |
| 5 | * | |
| 6 | * Renesas Technology Sales HS7751RVoIP Support. | |
| 7 | * | |
| 8 | * Modified for HS7751RVoIP by | |
| 9 | * Atom Create Engineering Co., Ltd. 2002. | |
| 10 | * Lineo uSolutions, Inc. 2003. | |
| 11 | */ | |
| 12 | ||
| 1da177e4 LT |
13 | #include <linux/init.h> |
| 14 | #include <linux/irq.h> | |
| 15 | #include <asm/io.h> | |
| 16 | #include <asm/irq.h> | |
| 17 | #include <asm/hs7751rvoip/hs7751rvoip.h> | |
| 18 | ||
| 19 | static int mask_pos[] = {8, 9, 10, 11, 12, 13, 0, 1, 2, 3, 4, 5, 6, 7}; | |
| 20 | ||
| 21 | static void enable_hs7751rvoip_irq(unsigned int irq); | |
| 22 | static void disable_hs7751rvoip_irq(unsigned int irq); | |
| 23 | ||
| 24 | /* shutdown is same as "disable" */ | |
| 25 | #define shutdown_hs7751rvoip_irq disable_hs7751rvoip_irq | |
| 26 | ||
| 27 | static void ack_hs7751rvoip_irq(unsigned int irq); | |
| 28 | static void end_hs7751rvoip_irq(unsigned int irq); | |
| 29 | ||
| 30 | static unsigned int startup_hs7751rvoip_irq(unsigned int irq) | |
| 31 | { | |
| 32 | enable_hs7751rvoip_irq(irq); | |
| 33 | return 0; /* never anything pending */ | |
| 34 | } | |
| 35 | ||
| 36 | static void disable_hs7751rvoip_irq(unsigned int irq) | |
| 37 | { | |
| 38 | unsigned long flags; | |
| 39 | unsigned short val; | |
| 40 | unsigned short mask = 0xffff ^ (0x0001 << mask_pos[irq]); | |
| 41 | ||
| 42 | /* Set the priority in IPR to 0 */ | |
| 43 | local_irq_save(flags); | |
| 44 | val = ctrl_inw(IRLCNTR3); | |
| 45 | val &= mask; | |
| 46 | ctrl_outw(val, IRLCNTR3); | |
| 47 | local_irq_restore(flags); | |
| 48 | } | |
| 49 | ||
| 50 | static void enable_hs7751rvoip_irq(unsigned int irq) | |
| 51 | { | |
| 52 | unsigned long flags; | |
| 53 | unsigned short val; | |
| 54 | unsigned short value = (0x0001 << mask_pos[irq]); | |
| 55 | ||
| 56 | /* Set priority in IPR back to original value */ | |
| 57 | local_irq_save(flags); | |
| 58 | val = ctrl_inw(IRLCNTR3); | |
| 59 | val |= value; | |
| 60 | ctrl_outw(val, IRLCNTR3); | |
| 61 | local_irq_restore(flags); | |
| 62 | } | |
| 63 | ||
| 64 | static void ack_hs7751rvoip_irq(unsigned int irq) | |
| 65 | { | |
| 66 | disable_hs7751rvoip_irq(irq); | |
| 67 | } | |
| 68 | ||
| 69 | static void end_hs7751rvoip_irq(unsigned int irq) | |
| 70 | { | |
| 71 | if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) | |
| 72 | enable_hs7751rvoip_irq(irq); | |
| 73 | } | |
| 74 | ||
| 75 | static struct hw_interrupt_type hs7751rvoip_irq_type = { | |
| 08d0fd07 TG |
76 | .typename = "HS7751RVoIP IRQ", |
| 77 | .startup = startup_hs7751rvoip_irq, | |
| 78 | .shutdown = shutdown_hs7751rvoip_irq, | |
| 79 | .enable = enable_hs7751rvoip_irq, | |
| 80 | .disable = disable_hs7751rvoip_irq, | |
| 81 | .ack = ack_hs7751rvoip_irq, | |
| 82 | .end = end_hs7751rvoip_irq, | |
| 1da177e4 LT |
83 | }; |
| 84 | ||
| 85 | static void make_hs7751rvoip_irq(unsigned int irq) | |
| 86 | { | |
| 87 | disable_irq_nosync(irq); | |
| d1bef4ed | 88 | irq_desc[irq].chip = &hs7751rvoip_irq_type; |
| 1da177e4 LT |
89 | disable_hs7751rvoip_irq(irq); |
| 90 | } | |
| 91 | ||
| 92 | /* | |
| 93 | * Initialize IRQ setting | |
| 94 | */ | |
| 95 | void __init init_hs7751rvoip_IRQ(void) | |
| 96 | { | |
| 97 | int i; | |
| 98 | ||
| 99 | /* IRL0=ON HOOK1 | |
| 100 | * IRL1=OFF HOOK1 | |
| 101 | * IRL2=ON HOOK2 | |
| 102 | * IRL3=OFF HOOK2 | |
| 103 | * IRL4=Ringing Detection | |
| 104 | * IRL5=CODEC | |
| 105 | * IRL6=Ethernet | |
| 106 | * IRL7=Ethernet Hub | |
| 107 | * IRL8=USB Communication | |
| 108 | * IRL9=USB Connection | |
| 109 | * IRL10=USB DMA | |
| 110 | * IRL11=CF Card | |
| 111 | * IRL12=PCMCIA | |
| 112 | * IRL13=PCI Slot | |
| 113 | */ | |
| 114 | ctrl_outw(0x9876, IRLCNTR1); | |
| 115 | ctrl_outw(0xdcba, IRLCNTR2); | |
| 116 | ctrl_outw(0x0050, IRLCNTR4); | |
| 117 | ctrl_outw(0x4321, IRLCNTR5); | |
| 118 | ||
| 119 | for (i=0; i<14; i++) | |
| 120 | make_hs7751rvoip_irq(i); | |
| 121 | } |