@@ -1087,6 +1087,19 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
return ret;
}
+static int tmio_mmc_get_cd(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ int ret;
+
+ ret = mmc_gpio_get_cd(mmc);
+ if (ret >= 0)
+ return ret;
+
+ return !!(sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) &
+ TMIO_STAT_SIGSTATE);
+}
+
static int tmio_multi_io_quirk(struct mmc_card *card,
unsigned int direction, int blk_size)
{
@@ -1102,7 +1115,7 @@ static const struct mmc_host_ops tmio_mmc_ops = {
.request = tmio_mmc_request,
.set_ios = tmio_mmc_set_ios,
.get_ro = tmio_mmc_get_ro,
- .get_cd = mmc_gpio_get_cd,
+ .get_cd = tmio_mmc_get_cd,
.enable_sdio_irq = tmio_mmc_enable_sdio_irq,
.multi_io_quirk = tmio_multi_io_quirk,
.hw_reset = tmio_mmc_hw_reset,
A card detect GPIO is set up only for platforms with "cd-gpios" DT property or TMIO_MMC_USE_GPIO_CD flag. However, the driver core always uses mmc_gpio_get_cd, which just fails with -ENOSYS if ctx->cd_gpio is unset. The bit 5 of the status register provides the current signal level of the CD line. Allow to use it if the GPIO is unused. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- drivers/mmc/host/tmio_mmc_core.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) -- 2.7.4