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mmc: host: omap_hsmmc: add code for special init of wl1251 to get rid of pandora_wl1251_init_card 

commit f6498b922e upstream.

Pandora_wl1251_init_card was used to do special pdata based
setup of the sdio mmc interface. This does no longer work with
v4.7 and later. A fix requires a device tree based mmc3 setup.

Therefore we move the special setup to omap_hsmmc.c instead
of calling some pdata supplied init_card function.

The new code checks for a DT child node compatible to wl1251
so it will not affect other MMC3 use cases.

Generally, this code was and still is a hack and should be
moved to mmc core to e.g. read such properties from optional
DT child nodes.

Fixes: 81eef6ca92 ("mmc: omap_hsmmc: Use dma_request_chan() for requesting DMA channel")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: <stable@vger.kernel.org> # v4.7+
[Ulf: Fixed up some checkpatch complaints]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H. Nikolaus Schaller 2019-11-07 11:30:37 +01:00 committed by Greg Kroah-Hartman
parent 1dc61ab2a1
commit a495f6dd2a
1 changed files with 30 additions and 0 deletions
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30
drivers/mmc/host/omap_hsmmc.c
View File

@ -1512,6 +1512,36 @@ static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card)
if (mmc_pdata(host)->init_card)
mmc_pdata(host)->init_card(card);
else if (card->type == MMC_TYPE_SDIO ||
card->type == MMC_TYPE_SD_COMBO) {
struct device_node *np = mmc_dev(mmc)->of_node;
/*
* REVISIT: should be moved to sdio core and made more
* general e.g. by expanding the DT bindings of child nodes
* to provide a mechanism to provide this information:
* Documentation/devicetree/bindings/mmc/mmc-card.txt
*/
np = of_get_compatible_child(np, "ti,wl1251");
if (np) {
/*
* We have TI wl1251 attached to MMC3. Pass this
* information to the SDIO core because it can't be
* probed by normal methods.
*/
dev_info(host->dev, "found wl1251\n");
card->quirks |= MMC_QUIRK_NONSTD_SDIO;
card->cccr.wide_bus = 1;
card->cis.vendor = 0x104c;
card->cis.device = 0x9066;
card->cis.blksize = 512;
card->cis.max_dtr = 24000000;
card->ocr = 0x80;
of_node_put(np);
}
}
}
static void omap_hsmmc_enable_sdio_irq(struct mmc_host *mmc, int enable)