[PATCH v4 1/3] mmc: core: Support the optional init_card() callback for MMC and SD
From: dianders@chromium.org (Doug Anderson)
Date: 2014-12-02 20:51:30
Also in:
linux-mmc, linux-omap, lkml
Subsystem:
arm port, multimedia card (mmc), secure digital (sd) and sdio subsystem, omap2+ support, the rest · Maintainers:
Russell King, Ulf Hansson, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
In (3fcb027 ARM: MXC: mxcmmc: work around a bug in the SDHC busy line handling) the optional init_card() callback was added. According to the original change it was "for now only called from mmc_sdio_init_card()". This callback really ought to be called from the SD and MMC init functions as well. One current user of this callback (mxcmci_init_card) will not work as expected if you insert an SDIO card, then eject it and put a normal SD card in. Specifically the normal SD card will not get to run with 4-bit data. I'd like to use the init_card() callback to handle a similar quirk on dw_mmc when using SDIO Interrupts (the "low power" feature of the card needs to be disabled), so that will add a second user of the function. As part of this change fixup the one place that relied on the callback only happening for SDIO cards. Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Grant Grundler <redacted> --- Changes in v3: - Add fixup to pandora_wl1251_init_card(). Changes in v2: - mmc core change new for this version. arch/arm/mach-omap2/board-omap3pandora.c | 14 ++++++++------ drivers/mmc/core/mmc.c | 6 ++++++ drivers/mmc/core/sd.c | 7 ++++++- 3 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 7f17087..969e100 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c@@ -254,12 +254,14 @@ static void pandora_wl1251_init_card(struct mmc_card *card) * We have TI wl1251 attached to MMC3. Pass this information to * SDIO core because it can't be probed by normal methods. */ - 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 = 20000000; + if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) { + 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 = 20000000; + } } static struct omap2_hsmmc_info omap3pandora_mmc[] = {
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 02ad792..4a21d66 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c@@ -1297,6 +1297,12 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } /* + * Call the optional HC's init_card function to handle quirks. + */ + if (host->ops->init_card) + host->ops->init_card(host, card); + + /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) {
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index d90a6de..29fccdc 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c@@ -933,6 +933,12 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, } /* + * Call the optional HC's init_card function to handle quirks. + */ + if (host->ops->init_card) + host->ops->init_card(host, card); + + /* * For native busses: get card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) {
@@ -1271,4 +1277,3 @@ err: return err; } -
--
2.2.0.rc0.207.ga3a616c