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| author | Jisheng Zhang <Jisheng.Zhang@synaptics.com> | 2018-08-28 17:46:35 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-08 11:40:43 +0200 |
| commit | e93be38af15524a43437b23b01bcfe9cb789f4e3 (patch) | |
| tree | 5120015c9f2f0bc8f3154677bf51efd34da5375b /drivers/mmc/host/sdhci.c | |
| parent | 1ff537bd5d7b7d608d61cadae28224202781ba5b (diff) | |
| download | lwn-e93be38af15524a43437b23b01bcfe9cb789f4e3.tar.gz lwn-e93be38af15524a43437b23b01bcfe9cb789f4e3.zip | |
mmc: sdhci: add adma_table_cnt member to struct sdhci_host
This patch adds adma_table_cnt member to struct sdhci_host to give more
flexibility to drivers to control the ADMA table count.
Default value of adma_table_cnt is set to (SDHCI_MAX_SEGS * 2 + 1).
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 97e4efaf9f87..9f6398ae9181 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3324,6 +3324,13 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev, host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG; + /* + * The DMA table descriptor count is calculated as the maximum + * number of segments times 2, to allow for an alignment + * descriptor for each segment, plus 1 for a nop end descriptor. + */ + host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1; + return host; } @@ -3569,18 +3576,12 @@ int sdhci_setup_host(struct sdhci_host *host) dma_addr_t dma; void *buf; - /* - * The DMA descriptor table size is calculated as the maximum - * number of segments times 2, to allow for an alignment - * descriptor for each segment, plus 1 for a nop end descriptor, - * all multipled by the descriptor size. - */ if (host->flags & SDHCI_USE_64_BIT_DMA) { - host->adma_table_sz = (SDHCI_MAX_SEGS * 2 + 1) * + host->adma_table_sz = host->adma_table_cnt * SDHCI_ADMA2_64_DESC_SZ; host->desc_sz = SDHCI_ADMA2_64_DESC_SZ; } else { - host->adma_table_sz = (SDHCI_MAX_SEGS * 2 + 1) * + host->adma_table_sz = host->adma_table_cnt * SDHCI_ADMA2_32_DESC_SZ; host->desc_sz = SDHCI_ADMA2_32_DESC_SZ; } |