shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-09 04:10:18 +09:00
Code Issues Packages Projects Releases Wiki Activity

rk_sdmmc: recalculate audib rx_wmark

Browse Source 
AudiB contain a less limitation in rx_wmark.

Signed-off-by: xiaoyao <xiaoyao@rock-chips.com>
Signed-off-by: lintao <lintao@rock-chips.com>
This commit is contained in:
xiaoyao
2015-03-18 11:43:16 +08:00
parent 52a324603c
commit 77e142e21d
1 changed files with 13 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/mmc/host/rk_sdmmc.c
View File

@@ -620,6 +620,7 @@ static void dw_mci_edmac_start_dma(struct dw_mci *host, unsigned int sg_len)
u32 sg_elems = host->data->sg_len;
u32 fifoth_val, mburst;
u32 burst_limit = 0;
u32 idx, rx_wmark, tx_wmark;
int ret = 0;
/* Set external dma config: burst size, burst width*/
@@ -640,9 +641,18 @@ static void dw_mci_edmac_start_dma(struct dw_mci *host, unsigned int sg_len)
if (mburst > burst_limit) {
mburst = burst_limit;
fifoth_val = SDMMC_SET_FIFOTH(ilog2(mburst) - 1,
(host->fifo_depth) / 2 - 1,
(host->fifo_depth) / 2);
idx = (ilog2(mburst) > 0) ? (ilog2(mburst) - 1) : 0;
if (soc_is_rk3126b()) {
idx = 0;
rx_wmark = (host->fifo_depth) / 2 - 1;
} else {
rx_wmark = mszs[idx] - 1;
}
tx_wmark = (host->fifo_depth) / 2;
fifoth_val = SDMMC_SET_FIFOTH(idx, rx_wmark, tx_wmark);
mci_writel(host, FIFOTH, fifoth_val);
}