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kernel/linux-rt-4.4.41/arch/mips/alchemy/devboards/db1xxx.c 2.74 KB
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  /*
   * Alchemy DB/PB1xxx board support.
   */
  
  #include <asm/mach-au1x00/au1000.h>
  #include <asm/mach-db1x00/bcsr.h>
  
  int __init db1000_board_setup(void);
  int __init db1000_dev_setup(void);
  int __init db1500_pci_setup(void);
  int __init db1200_board_setup(void);
  int __init db1200_dev_setup(void);
  int __init db1300_board_setup(void);
  int __init db1300_dev_setup(void);
  int __init db1550_board_setup(void);
  int __init db1550_dev_setup(void);
  int __init db1550_pci_setup(int);
  
  static const char *board_type_str(void)
  {
  	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
  	case BCSR_WHOAMI_DB1000:
  		return "DB1000";
  	case BCSR_WHOAMI_DB1500:
  		return "DB1500";
  	case BCSR_WHOAMI_DB1100:
  		return "DB1100";
  	case BCSR_WHOAMI_PB1500:
  	case BCSR_WHOAMI_PB1500R2:
  		return "PB1500";
  	case BCSR_WHOAMI_PB1100:
  		return "PB1100";
  	case BCSR_WHOAMI_PB1200_DDR1:
  	case BCSR_WHOAMI_PB1200_DDR2:
  		return "PB1200";
  	case BCSR_WHOAMI_DB1200:
  		return "DB1200";
  	case BCSR_WHOAMI_DB1300:
  		return "DB1300";
  	case BCSR_WHOAMI_DB1550:
  		return "DB1550";
  	case BCSR_WHOAMI_PB1550_SDR:
  	case BCSR_WHOAMI_PB1550_DDR:
  		return "PB1550";
  	default:
  		return "(unknown)";
  	}
  }
  
  const char *get_system_type(void)
  {
  	return board_type_str();
  }
  
  void __init board_setup(void)
  {
  	int ret;
  
  	switch (alchemy_get_cputype()) {
  	case ALCHEMY_CPU_AU1000:
  	case ALCHEMY_CPU_AU1500:
  	case ALCHEMY_CPU_AU1100:
  		ret = db1000_board_setup();
  		break;
  	case ALCHEMY_CPU_AU1550:
  		ret = db1550_board_setup();
  		break;
  	case ALCHEMY_CPU_AU1200:
  		ret = db1200_board_setup();
  		break;
  	case ALCHEMY_CPU_AU1300:
  		ret = db1300_board_setup();
  		break;
  	default:
  		pr_err("unsupported CPU on board
  ");
  		ret = -ENODEV;
  	}
  	if (ret)
  		panic("cannot initialize board support");
  }
  
  static int __init db1xxx_arch_init(void)
  {
  	int id = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
  	if (id == BCSR_WHOAMI_DB1550)
  		return db1550_pci_setup(0);
  	else if ((id == BCSR_WHOAMI_PB1550_SDR) ||
  		 (id == BCSR_WHOAMI_PB1550_DDR))
  		return db1550_pci_setup(1);
  	else if ((id == BCSR_WHOAMI_DB1500) || (id == BCSR_WHOAMI_PB1500) ||
  		 (id == BCSR_WHOAMI_PB1500R2))
  		return db1500_pci_setup();
  
  	return 0;
  }
  arch_initcall(db1xxx_arch_init);
  
  static int __init db1xxx_dev_init(void)
  {
  	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
  	case BCSR_WHOAMI_DB1000:
  	case BCSR_WHOAMI_DB1500:
  	case BCSR_WHOAMI_DB1100:
  	case BCSR_WHOAMI_PB1500:
  	case BCSR_WHOAMI_PB1500R2:
  	case BCSR_WHOAMI_PB1100:
  		return db1000_dev_setup();
  	case BCSR_WHOAMI_PB1200_DDR1:
  	case BCSR_WHOAMI_PB1200_DDR2:
  	case BCSR_WHOAMI_DB1200:
  		return db1200_dev_setup();
  	case BCSR_WHOAMI_DB1300:
  		return db1300_dev_setup();
  	case BCSR_WHOAMI_DB1550:
  	case BCSR_WHOAMI_PB1550_SDR:
  	case BCSR_WHOAMI_PB1550_DDR:
  		return db1550_dev_setup();
  	}
  	return 0;
  }
  device_initcall(db1xxx_dev_init);