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authorLudovic Barre <ludovic.barre@st.com>2018-10-08 14:08:41 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2018-10-09 09:13:04 +0200
commite0da1721211b9016be1a1d994d97eb53c3ca29fe (patch)
tree08563941b4bfc0e4c7a229c249acd198b7ddaf89 /drivers/mmc
parentcfccc6ac005425c4fcb44a4c48a183652751812b (diff)
downloadlinux-e0da1721211b9016be1a1d994d97eb53c3ca29fe.tar.gz
mmc: mmci: add validate_data callback
This patch adds validate_data callback at mmci_host_ops to check specific constraints of variant. Move mmci_validate_data function to regroup mmci_host_ops interfaces. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/mmci.c39
-rw-r--r--drivers/mmc/host/mmci.h1
2 files changed, 22 insertions, 18 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 3d4431babc8c..91ef2ede41c5 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -239,24 +239,6 @@ static int mmci_card_busy(struct mmc_host *mmc)
return busy;
}
-/*
- * Validate mmc prerequisites
- */
-static int mmci_validate_data(struct mmci_host *host,
- struct mmc_data *data)
-{
- if (!data)
- return 0;
-
- if (!is_power_of_2(data->blksz)) {
- dev_err(mmc_dev(host->mmc),
- "unsupported block size (%d bytes)\n", data->blksz);
- return -EINVAL;
- }
-
- return 0;
-}
-
static void mmci_reg_delay(struct mmci_host *host)
{
/*
@@ -392,6 +374,27 @@ void mmci_dma_setup(struct mmci_host *host)
host->use_dma = true;
}
+/*
+ * Validate mmc prerequisites
+ */
+static int mmci_validate_data(struct mmci_host *host,
+ struct mmc_data *data)
+{
+ if (!data)
+ return 0;
+
+ if (!is_power_of_2(data->blksz)) {
+ dev_err(mmc_dev(host->mmc),
+ "unsupported block size (%d bytes)\n", data->blksz);
+ return -EINVAL;
+ }
+
+ if (host->ops && host->ops->validate_data)
+ return host->ops->validate_data(host, data);
+
+ return 0;
+}
+
int mmci_prep_data(struct mmci_host *host, struct mmc_data *data, bool next)
{
int err;
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index bcf3e8b901d7..ed59baf37f0f 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -273,6 +273,7 @@ struct variant_data {
/* mmci variant callbacks */
struct mmci_host_ops {
+ int (*validate_data)(struct mmci_host *host, struct mmc_data *data);
int (*prep_data)(struct mmci_host *host, struct mmc_data *data,
bool next);
void (*unprep_data)(struct mmci_host *host, struct mmc_data *data,