diff options
| author | Dmitri Vorobiev <dmitri.vorobiev@gmail.com> | 2008-01-24 19:52:43 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-01-29 10:15:03 +0000 |
| commit | f3a4ce9587cd1e810f31c87ecb89033d5fd269ce (patch) | |
| tree | b5ad7575c85be022c4c9cbd7d398997d408fcb56 /arch | |
| parent | 8216d348e374b369338f015ca34492de1e381214 (diff) | |
[MIPS] Malta: check the PCI clock frequency in a separate function
This patch adds a separate short and sweet function to check the
PCI clock frequency. This is to improve readability of the Malta
setup code.
Along the way, a couple of coding style violations are fixed.
No functional changes introduced.
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/mips-boards/malta/malta_setup.c | 43 |
1 files changed, 25 insertions, 18 deletions
diff --git a/arch/mips/mips-boards/malta/malta_setup.c b/arch/mips/mips-boards/malta/malta_setup.c index d051405a2809..79d74ea75bc4 100644 --- a/arch/mips/mips-boards/malta/malta_setup.c +++ b/arch/mips/mips-boards/malta/malta_setup.c @@ -108,6 +108,30 @@ void __init fd_activate(void) } #endif +#ifdef CONFIG_BLK_DEV_IDE +static void __init pci_clock_check(void) +{ + unsigned int __iomem *jmpr_p = + (unsigned int *) ioremap(MALTA_JMPRS_REG, sizeof(unsigned int)); + int jmpr = (__raw_readl(jmpr_p) >> 2) & 0x07; + static const int pciclocks[] __initdata = { + 33, 20, 25, 30, 12, 16, 37, 10 + }; + int pciclock = pciclocks[jmpr]; + char *argptr = prom_getcmdline(); + + if (pciclock != 33 && !strstr(argptr, "idebus=")) { + printk(KERN_WARNING "WARNING: PCI clock is %dMHz, " + "setting idebus\n", pciclock); + argptr += strlen(argptr); + sprintf(argptr, " idebus=%d", pciclock); + if (pciclock < 20 || pciclock > 66) + printk(KERN_WARNING "WARNING: IDE timing " + "calculations will be incorrect\n"); + } +} +#endif + void __init plat_mem_setup(void) { unsigned int i; @@ -171,24 +195,7 @@ void __init plat_mem_setup(void) #endif #ifdef CONFIG_BLK_DEV_IDE - /* Check PCI clock */ - { - unsigned int __iomem *jmpr_p = (unsigned int *) ioremap(MALTA_JMPRS_REG, sizeof(unsigned int)); - int jmpr = (__raw_readl(jmpr_p) >> 2) & 0x07; - static const int pciclocks[] __initdata = { - 33, 20, 25, 30, 12, 16, 37, 10 - }; - int pciclock = pciclocks[jmpr]; - char *argptr = prom_getcmdline(); - - if (pciclock != 33 && !strstr (argptr, "idebus=")) { - printk("WARNING: PCI clock is %dMHz, setting idebus\n", pciclock); - argptr += strlen(argptr); - sprintf(argptr, " idebus=%d", pciclock); - if (pciclock < 20 || pciclock > 66) - printk("WARNING: IDE timing calculations will be incorrect\n"); - } - } + pci_clock_check(); #endif #ifdef CONFIG_BLK_DEV_FD fd_activate(); |