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authorAdrian Hunter <adrian.hunter@intel.com>2011-09-23 12:48:21 +0300
committerChris Ball <cjb@laptop.org>2011-10-26 16:32:15 -0400
commitf7c56ef2af5ae7e4c24c3c79427b38d18ba1d294 (patch)
tree5590da07839d9a07b7811a8fe0104aaa596e03dc /include/linux/mmc
parent0d7d85ca6e5dc7bd426d1d5989a44e93e8c7a0d3 (diff)
mmc: block: support no access to boot partitions
Intel Medfield platform blocks access to eMMC boot partitions which results in switch errors. Since there is no access, mmcboot0/1 devices should not be created. Add a host capability to reflect that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/host.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index b2aefea97048..aed5bc7245f7 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -236,6 +236,10 @@ struct mmc_host {
#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
+ unsigned int caps2; /* More host capabilities */
+
+#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
+
mmc_pm_flag_t pm_caps; /* supported pm features */
#ifdef CONFIG_MMC_CLKGATE
@@ -404,4 +408,10 @@ static inline int mmc_host_cmd23(struct mmc_host *host)
{
return host->caps & MMC_CAP_CMD23;
}
+
+static inline int mmc_boot_partition_access(struct mmc_host *host)
+{
+ return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
+}
+
#endif /* LINUX_MMC_HOST_H */