MIPS: Loongson 2F: Cleanup the #if clauses

This patch adds two new kernel options: CPU_SUPPORTS_CPUFREQ and
CPU_SUPPORTS_ADDRWINCFG to describe the new features of Loongons 2F and
replaces the several ugly #if clauses by them.

These two options will be utilized by the future loongson revisions and
related drivers such as the coming Loongson 2F CPUFreq driver.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -1334,6 +1334,8 @@ config SYS_HAS_CPU_LOONGSON2E
 
 config SYS_HAS_CPU_LOONGSON2F
 	bool
+	select CPU_SUPPORTS_CPUFREQ
+	select CPU_SUPPORTS_ADDRWINCFG if 64BIT
 
 config SYS_HAS_CPU_MIPS32_R1
 	bool
@@ -1443,6 +1445,10 @@ config CPU_SUPPORTS_32BIT_KERNEL
 	bool
 config CPU_SUPPORTS_64BIT_KERNEL
 	bool
+config CPU_SUPPORTS_CPUFREQ
+	bool
+config CPU_SUPPORTS_ADDRWINCFG
+	bool
 config CPU_SUPPORTS_HUGEPAGES
 	bool
 config MIPS_PGD_C0_CONTEXT

arch/mips/include/asm/mach-loongson/loongson.h

@@ -227,7 +227,7 @@ extern void mach_irq_dispatch(unsigned int pending);
 	((((ADDR)>>26) & LOONGSON_PCIMAP_PCIMAP_LO0) << ((WIN)*6))
 
 /* Chip Config */
-#ifdef CONFIG_CPU_LOONGSON2F
+#ifdef CONFIG_CPU_SUPPORTS_CPUFREQ
 #define LOONGSON_CHIPCFG0		LOONGSON_REG(LOONGSON_REGBASE + 0x80)
 #endif
 
@@ -236,7 +236,7 @@ extern void mach_irq_dispatch(unsigned int pending);
  *
  * loongson2e do not have this module
  */
-#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
+#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
 
 /* address window config module base address */
 #define LOONGSON_ADDRWINCFG_BASE		0x3ff00000ul
@@ -306,6 +306,6 @@ extern unsigned long _loongson_addrwincfg_base;
 #define LOONGSON_ADDRWIN_PCITODDR(win, src, dst, size) \
 	LOONGSON_ADDRWIN_CFG(PCIDMA, DDR, win, src, dst, size)
 
-#endif	/* ! CONFIG_CPU_LOONGSON2F && CONFIG_64BIT */
+#endif	/* ! CONFIG_CPU_SUPPORTS_ADDRWINCFG */
 
 #endif /* __ASM_MACH_LOONGSON_LOONGSON_H */

arch/mips/include/asm/mach-loongson/pci.h

@@ -28,7 +28,7 @@ extern struct pci_ops loongson_pci_ops;
 /* this is an offset from mips_io_port_base */
 #define LOONGSON_PCI_IO_START	0x00004000UL
 
-#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
+#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
 
 /*
  * we use address window2 to map cpu address space to pci space
@@ -56,6 +56,6 @@ extern struct pci_ops loongson_pci_ops;
 /* this is an offset from mips_io_port_base */
 #define LOONGSON_PCI_IO_START	0x00004000UL
 
-#endif	/* !(defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT))*/
+#endif	/* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */
 
 #endif /* !__ASM_MACH_LOONGSON_PCI_H_ */

arch/mips/loongson/common/init.c

@@ -21,7 +21,7 @@ void __init prom_init(void)
 	set_io_port_base((unsigned long)
 		ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
 
-#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
+#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
 	_loongson_addrwincfg_base = (unsigned long)
 		ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE);
 #endif

arch/mips/loongson/common/mem.c

@@ -20,8 +20,7 @@ void __init prom_init_memory(void)
 
     add_memory_region(memsize << 20, LOONGSON_PCI_MEM_START - (memsize <<
 			    20), BOOT_MEM_RESERVED);
-#ifdef CONFIG_64BIT
-#ifdef CONFIG_CPU_LOONGSON2F
+#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
 	{
 		int bit;
 
@@ -36,8 +35,9 @@ void __init prom_init_memory(void)
 					  0x80000000ul, (1 << bit));
 		mmiowb();
 	}
-#endif				/* CONFIG_CPU_LOONGSON2F */
+#endif /* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */
 
+#ifdef CONFIG_64BIT
 	if (highmemsize > 0)
 		add_memory_region(LOONGSON_HIGHMEM_START,
 				  highmemsize << 20, BOOT_MEM_RAM);
@@ -45,7 +45,7 @@ void __init prom_init_memory(void)
 	add_memory_region(LOONGSON_PCI_MEM_END + 1, LOONGSON_HIGHMEM_START -
 			  LOONGSON_PCI_MEM_END - 1, BOOT_MEM_RESERVED);
 
-#endif				/* CONFIG_64BIT */
+#endif /* !CONFIG_64BIT */
 }
 
 /* override of arch/mips/mm/cache.c: __uncached_access */

arch/mips/loongson/common/pci.c

@@ -68,7 +68,7 @@ static void __init setup_pcimap(void)
 	deassert for some broken device */
 	LOONGSON_PXARB_CFG = 0x00fe0105ul;
 
-#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
+#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
 	/*
 	 * set cpu addr window2 to map CPU address space to PCI address space
 	 */