Dear Marc Kleine-Budde,
On 04/05/2013 02:47 PM, Marc Kleine-Budde wrote:
Some boards have non removable cards like eMMC. Handle such case.
Acked-by: Shawn Guo <shawn....@linaro.org>
Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de>
---
changes since v1:
- fix removeable typo
drivers/mmc/host/mxs-mmc.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 0cdf1f6..c231881 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -73,6 +73,7 @@ struct mxs_mmc_host {
int wp_gpio;
bool wp_inverted;
bool cd_inverted;
+ bool non_removable;
};
static int mxs_mmc_get_ro(struct mmc_host *mmc)
@@ -96,8 +97,9 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
struct mxs_mmc_host *host = mmc_priv(mmc);
struct mxs_ssp *ssp = &host->ssp;
- return !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
- BM_SSP_STATUS_CARD_DETECT)) ^ host->cd_inverted;
+ return host->non_removable ||
+ !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
+ BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted;
}
static void mxs_mmc_reset(struct mxs_mmc_host *host)
@@ -687,8 +689,10 @@ static int mxs_mmc_probe(struct platform_device *pdev)
mmc->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+ host->non_removable = of_property_read_bool(np, "non-removable");
+ if (host->non_removable)
+ mmc->caps |= MMC_CAP_NONREMOVABLE;
host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags);
-
if (flags & OF_GPIO_ACTIVE_LOW)
host->wp_inverted = 1;
It looks like Alexander and I were looking at the same in different threads:
http://comments.gmane.org/gmane.linux.kernel.mmc/19964
http://comments.gmane.org/gmane.linux.kernel/1471409
The following completes your 2/2 patch with broken-cd support as well (in both cases
system must assume card is always present):
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 206fe49..7a60097 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -72,6 +72,8 @@ struct mxs_mmc_host {
int sdio_irq_en;
int wp_gpio;
bool wp_inverted;
+ bool broken_cd;
+ bool non_removable;
};
static int mxs_mmc_get_ro(struct mmc_host *mmc)
@@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
struct mxs_mmc_host *host = mmc_priv(mmc);
struct mxs_ssp *ssp = &host->ssp;
- return !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
+ return host->non_removable || host->broken_cd ||
+ !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
BM_SSP_STATUS_CARD_DETECT);
}
@@ -686,8 +689,11 @@ static int mxs_mmc_probe(struct platform_device *pdev)
mmc->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+ host->broken_cd = of_property_read_bool(np, "broken-cd");
+ host->non_removable = of_property_read_bool(np, "non-removable");
+ if (host->non_removable)
+ mmc->caps |= MMC_CAP_NONREMOVABLE;
host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags);
-
if (flags & OF_GPIO_ACTIVE_LOW)
host->wp_inverted = 1;
Regards,
--
Héctor Palacios
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