Commit 4ee7dde4 authored by Adrian Hunter's avatar Adrian Hunter Committed by Ulf Hansson
Browse files

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: default avatarAdrian Hunter <adrian.hunter@intel.com>
Tested-by: default avatarNicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Cc: stable@vger.kernel.org # v4.15 +
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 121bd08b
......@@ -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);
......
......@@ -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);
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment