mmc: parse new binding for eMMC fixed driver type
Parse the new binding and store it in the host struct after doing some
sanity checks. The code is designed to support fixed SD driver type if
we ever need that.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index e58be39..35a9e4f 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -179,7 +179,7 @@
int mmc_of_parse(struct mmc_host *host)
{
struct device *dev = host->parent;
- u32 bus_width;
+ u32 bus_width, drv_type;
int ret;
bool cd_cap_invert, cd_gpio_invert = false;
bool ro_cap_invert, ro_gpio_invert = false;
@@ -321,6 +321,15 @@
if (device_property_read_bool(dev, "no-mmc"))
host->caps2 |= MMC_CAP2_NO_MMC;
+ /* Must be after "non-removable" check */
+ if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) {
+ if (host->caps & MMC_CAP_NONREMOVABLE)
+ host->fixed_drv_type = drv_type;
+ else
+ dev_err(host->parent,
+ "can't use fixed driver type, media is removable\n");
+ }
+
host->dsr_req = !device_property_read_u32(dev, "dsr", &host->dsr);
if (host->dsr_req && (host->dsr & ~0xffff)) {
dev_err(host->parent,
@@ -393,6 +402,8 @@
host->max_blk_size = 512;
host->max_blk_count = PAGE_SIZE / 512;
+ host->fixed_drv_type = -EINVAL;
+
return host;
}