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authorAdrian Hunter <adrian.hunter@intel.com>2019-09-23 13:08:09 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2019-09-27 21:30:13 +0300
commit4ee7dde4c777f14cb0f98dd201491bf6cc15899b (patch)
tree8c06f6f8d918b5c58362470db9164f1250cbef6c /drivers
parent121bd08b029e03404c451bb237729cdff76eafed (diff)
downloadlinux-4ee7dde4c777f14cb0f98dd201491bf6cc15899b.tar.xz
mmc: sdhci: Let drivers define their DMA mask
Add host operation ->set_dma_mask() so that drivers can define their own DMA masks. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Cc: stable@vger.kernel.org # v4.15 + Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/host/sdhci.c12
-rw-r--r--drivers/mmc/host/sdhci.h1
2 files changed, 5 insertions, 8 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 922a5b594c5e..b056400e34b1 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3781,18 +3781,14 @@ int sdhci_setup_host(struct sdhci_host *host)
host->flags &= ~SDHCI_USE_ADMA;
}
- /*
- * It is assumed that a 64-bit capable device has set a 64-bit DMA mask
- * and *must* do 64-bit DMA. A driver has the opportunity to change
- * that during the first call to ->enable_dma(). Similarly
- * SDHCI_QUIRK2_BROKEN_64_BIT_DMA must be left to the drivers to
- * implement.
- */
if (sdhci_can_64bit_dma(host))
host->flags |= SDHCI_USE_64_BIT_DMA;
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
- ret = sdhci_set_dma_mask(host);
+ if (host->ops->set_dma_mask)
+ ret = host->ops->set_dma_mask(host);
+ else
+ ret = sdhci_set_dma_mask(host);
if (!ret && host->ops->enable_dma)
ret = host->ops->enable_dma(host);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index a29c4cd2d92e..0ed3e0eaef5f 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -622,6 +622,7 @@ struct sdhci_ops {
u32 (*irq)(struct sdhci_host *host, u32 intmask);
+ int (*set_dma_mask)(struct sdhci_host *host);
int (*enable_dma)(struct sdhci_host *host);
unsigned int (*get_max_clock)(struct sdhci_host *host);
unsigned int (*get_min_clock)(struct sdhci_host *host);