static void ssb_mips_flash_detect()

in driver_mipscore.c [214:263]

• 44 lines of code
• 8 McCabe index (conditional complexity)

static void ssb_mips_flash_detect(struct ssb_mipscore *mcore)
{
	struct ssb_bus *bus = mcore->dev->bus;
	struct ssb_sflash *sflash = &mcore->sflash;
	struct ssb_pflash *pflash = &mcore->pflash;

	/* When there is no chipcommon on the bus there is 4MB flash */
	if (!ssb_chipco_available(&bus->chipco)) {
		pflash->present = true;
		pflash->buswidth = 2;
		pflash->window = SSB_FLASH1;
		pflash->window_size = SSB_FLASH1_SZ;
		goto ssb_pflash;
	}

	/* There is ChipCommon, so use it to read info about flash */
	switch (bus->chipco.capabilities & SSB_CHIPCO_CAP_FLASHT) {
	case SSB_CHIPCO_FLASHT_STSER:
	case SSB_CHIPCO_FLASHT_ATSER:
		dev_dbg(mcore->dev->dev, "Found serial flash\n");
		ssb_sflash_init(&bus->chipco);
		break;
	case SSB_CHIPCO_FLASHT_PARA:
		dev_dbg(mcore->dev->dev, "Found parallel flash\n");
		pflash->present = true;
		pflash->window = SSB_FLASH2;
		pflash->window_size = SSB_FLASH2_SZ;
		if ((ssb_read32(bus->chipco.dev, SSB_CHIPCO_FLASH_CFG)
		               & SSB_CHIPCO_CFG_DS16) == 0)
			pflash->buswidth = 1;
		else
			pflash->buswidth = 2;
		break;
	}

ssb_pflash:
	if (sflash->present) {
#ifdef CONFIG_BCM47XX
		bcm47xx_nvram_init_from_mem(sflash->window, sflash->size);
#endif
	} else if (pflash->present) {
#ifdef CONFIG_BCM47XX
		bcm47xx_nvram_init_from_mem(pflash->window, pflash->window_size);
#endif

		ssb_pflash_data.width = pflash->buswidth;
		ssb_pflash_resource.start = pflash->window;
		ssb_pflash_resource.end = pflash->window + pflash->window_size;
	}
}