On Mon, Mar 5, 2012 at 3:55 PM, T Krishnamoorthy, Balaji <balajitk@xxxxxx> wrote: > On Mon, Mar 5, 2012 at 2:46 PM, Rajendra Nayak <rnayak@xxxxxx> wrote: >> On Friday 02 March 2012 10:52 PM, Tony Lindgren wrote: >>> >>> BTW, with -rc5, looks like re-inserting omap_hsmmc on omap4 fails >>> to detect any cards, and then fails to unload. This works on omap3 >>> just fine. Any ideas why that would be? >> >> >> Yeah, looks like thats broken. I am not sure whats going wrong though. >> I just enabled CONFIG_MMC_DEBUG and saw these logs below. >> >> Venkat/Balaji, care to look at this one? >> > > Let me check this OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset. Addng the offset to platform_device resource structure increments the start address for every insmod operation. MMC command fails on re-insertion as module due incorrect register base. Fix this by updating the ioremap base address only. Signed-off-by: Balaji T K <balajitk@xxxxxx> --- Note: eMMC detection is still failing on resertion due to card vcc power off on rmmod drivers/mmc/host/omap_hsmmc.c | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index fd0c661..4e1f8f6 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1870,8 +1870,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) if (res == NULL || irq < 0) return -ENXIO; - res->start += pdata->reg_offset; - res->end += pdata->reg_offset; res = request_mem_region(res->start, resource_size(res), pdev->name); if (res == NULL) return -EBUSY; @@ -1896,7 +1894,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) host->irq = irq; host->id = pdev->id; host->slot_id = 0; - host->mapbase = res->start; + host->mapbase = res->start + pdata->reg_offset; host->base = ioremap(host->mapbase, SZ_4K); host->power_mode = MMC_POWER_OFF; host->next_data.cookie = 1; -- 1.7.0.4 > >> # insmod omap_hsmmc.ko >> [ 43.358398] omap_hsmmc omap_hsmmc.0: context was not lost >> [ 43.364105] omap_hsmmc omap_hsmmc.0: enabled >> [ 44.434661] mmc0: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 >> timing 0 >> [ 44.442352] omap_hsmmc omap_hsmmc.0: Set clock to 0Hz >> [ 44.474365] omap_hsmmc omap_hsmmc.0: disabled >> [ 44.482208] omap_hsmmc omap_hsmmc.4: context was not lost >> [ 44.482208] omap_hsmmc omap_hsmmc.4: enabled >> [ 44.546600] omap_hsmmc omap_hsmmc.0: context was not lost >> [ 44.552276] omap_hsmmc omap_hsmmc.0: enabled >> [ 44.552276] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz >> [ 44.563720] mmc0: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 18 width 0 >> timing 0 >> [ 44.572174] omap_hsmmc omap_hsmmc.0: Set clock to 0Hz >> [ 44.613800] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 18 width >> 0 timing 0 >> [ 44.621887] omap_hsmmc omap_hsmmc.0: Set clock to 400000Hz >> [ 44.735290] mmc0: starting CMD52 arg 00000c00 flags 00000195 >> [ 44.741271] omap_hsmmc omap_hsmmc.0: mmc0: CMD52, argument 0x00000c00 >> [ 45.560241] mmc1: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 >> timing 0 >> [ 45.567871] omap_hsmmc omap_hsmmc.4: Set clock to 0Hz >> [ 45.591491] omap_hsmmc omap_hsmmc.4: disabled >> # >> # >> # rmmod omap_hsmmc >> [ 607.302307] omap_hsmmc omap_hsmmc.4: context was not lost >> [ 607.308044] omap_hsmmc omap_hsmmc.4: enabled >> [ 607.312591] omap_hsmmc omap_hsmmc.4: disabled >> [ 607.317199] omap_hsmmc omap_hsmmc.4: context was not lost >> [ 607.322875] omap_hsmmc omap_hsmmc.4: enabled >> -- Thanks and Regards, Balaji T K -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
