Commit 56902d5e authored Jul 03, 2017 by Can Guo Committed by Ram Prakash Gupta May 23, 2019

mmc: core: Fix card remove detect when use extcon



Since SDM845 uses extcon for card insertion and remove detection
and cd_gpio in device tree is not given, so the mmc_gpio_get_cd
function cannot detect card remove by reading gpio value. Fix it
by checking extcon state if extcon is initialized during sdhci
msm probe.

Change-Id: Ib44d211f707393cb440c387a06fa70d3adc99736
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>

parent 79c36b07

drivers/mmc/core/slot-gpio.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -81,7 +81,15 @@ int mmc_gpio_get_cd(struct mmc_host *host)
		{
		struct mmc_gpio *ctx = host->slot.handler_priv;
		int cansleep;
		int ret;

		if (host->extcon) {
		ret = extcon_get_state(host->extcon, EXTCON_MECHANICAL);
		if (ret < 0)
		dev_err(mmc_dev(host), "%s: Extcon failed to check card state, ret=%d\n",
		__func__, ret);
		return ret;
		}
		if (!ctx \|\| !ctx->cd_gpio)
		return -ENOSYS;