~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/h8300/platform/h8s/irq.c

Version: ~ [ linux-5.4-rc3 ] ~ [ linux-5.3.6 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.79 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.149 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.196 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.196 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.75 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * linux/arch/h8300/platform/h8s/ints_h8s.c
  3  * Interrupt handling CPU variants
  4  *
  5  * Yoshinori Sato <ysato@users.sourceforge.jp>
  6  *
  7  */
  8 
  9 #include <linux/init.h>
 10 #include <linux/errno.h>
 11 #include <linux/kernel.h>
 12 
 13 #include <asm/ptrace.h>
 14 #include <asm/traps.h>
 15 #include <asm/irq.h>
 16 #include <asm/io.h>
 17 #include <asm/gpio-internal.h>
 18 #include <asm/regs267x.h>
 19 
 20 /* saved vector list */
 21 const int __initconst h8300_saved_vectors[] = {
 22 #if defined(CONFIG_GDB_DEBUG)
 23         TRACE_VEC,
 24         TRAP3_VEC,
 25 #endif
 26         -1
 27 };
 28 
 29 /* trap entry table */
 30 const H8300_VECTOR __initconst h8300_trap_table[] = {
 31         0,0,0,0,0,
 32         trace_break,  /* TRACE */
 33         0,0,
 34         system_call,  /* TRAPA #0 */
 35         0,0,0,0,0,0,0
 36 };
 37 
 38 /* IRQ pin assignment */
 39 struct irq_pins {
 40         unsigned char port_no;
 41         unsigned char bit_no;
 42 } __attribute__((aligned(1),packed));
 43 /* ISTR = 0 */
 44 static const struct irq_pins irq_assign_table0[16]={
 45         {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
 46         {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
 47         {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
 48         {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
 49         {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
 50         {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
 51         {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
 52         {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
 53 };
 54 /* ISTR = 1 */
 55 static const struct irq_pins irq_assign_table1[16]={
 56         {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
 57         {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
 58         {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
 59         {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
 60         {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
 61         {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
 62         {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
 63         {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
 64 };
 65 
 66 /* IRQ to GPIO pin translation */
 67 #define IRQ_GPIO_MAP(irqbit,irq,port,bit)                         \
 68 do {                                                              \
 69         if (*(volatile unsigned short *)ITSR & irqbit) {          \
 70                 port = irq_assign_table1[irq - EXT_IRQ0].port_no; \
 71                 bit  = irq_assign_table1[irq - EXT_IRQ0].bit_no;  \
 72         } else {                                                  \
 73                 port = irq_assign_table0[irq - EXT_IRQ0].port_no; \
 74                 bit  = irq_assign_table0[irq - EXT_IRQ0].bit_no;  \
 75         }                                                         \
 76 } while(0)
 77 
 78 int h8300_enable_irq_pin(unsigned int irq)
 79 {
 80         if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
 81                 unsigned short ptn = 1 << (irq - EXT_IRQ0);
 82                 unsigned int port_no,bit_no;
 83                 IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
 84                 if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
 85                         return -EBUSY;                   /* pin already use */
 86                 H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
 87                 *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
 88         }
 89 
 90         return 0;
 91 }
 92 
 93 void h8300_disable_irq_pin(unsigned int irq)
 94 {
 95         if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
 96                 /* disable interrupt & release IRQ pin */
 97                 unsigned short ptn = 1 << (irq - EXT_IRQ0);
 98                 unsigned short port_no,bit_no;
 99                 *(volatile unsigned short *)ISR &= ~ptn;
100                 *(volatile unsigned short *)IER &= ~ptn;
101                 IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
102                 H8300_GPIO_FREE(port_no, bit_no);
103         }
104 }
105 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp