Re: [PATCH 2/5] mmc: tmio_mmc: add bus_shift support

[pHilipp Zabel]

On Mon, May 25, 2009 at 9:27 PM, Philipp Zabel <philipp.zabel@xxxxxxxxx> wrote:
> Some ASIC3 devices in the wild are connected with the address bus shifted
> by one line, so that its 16-bit registers appear 32-bit aligned in host
> memory space.

This patch has to be amended:

diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index 245de05..8223977 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -495,7 +495,8 @@ static int tmio_mmc_resume(struct platform_device *dev)

        /* Enable the MMC/SD Control registers */
        sd_config_write16(host, CNF_CMD, SDCREN);
-       sd_config_write32(host, CNF_CTL_BASE, dev->resource[0].start & 0xfffe);
+       sd_config_write32(host, CNF_CTL_BASE,
+               (dev->resource[0].start >> host->bus_shift) & 0xfffe);

        /* Tell the MFD core we are ready to be enabled */
        if (cell->enable) {
@@ -566,7 +567,8 @@ static int __devinit tmio_mmc_probe(struct
platform_device *dev)

        /* Enable the MMC/SD Control registers */
        sd_config_write16(host, CNF_CMD, SDCREN);
-       sd_config_write32(host, CNF_CTL_BASE, dev->resource[0].start & 0xfffe);
+       sd_config_write32(host, CNF_CTL_BASE,
+               (dev->resource[0].start >> host->bus_shift) & 0xfffe);

        /* Tell the MFD core we are ready to be enabled */
        if (cell->enable) {

The resources have to be shifted back when configuring the SD control
register space.

regards
Philipp
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