From: xiaoyao <xiaoyao@rock-chips.com>
Date: Wed, 18 Mar 2015 03:43:16 +0000 (+0800)
Subject: rk_sdmmc: recalculate audib rx_wmark
X-Git-Tag: firefly_0821_release~4255
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=77e142e21dfd6507f7d1f0464c12f9e5502e1f10;p=firefly-linux-kernel-4.4.55.git

rk_sdmmc: recalculate audib rx_wmark
	AudiB contain a less limitation in rx_wmark.

Signed-off-by: xiaoyao <xiaoyao@rock-chips.com>
Signed-off-by: lintao <lintao@rock-chips.com>
---

diff --git a/drivers/mmc/host/rk_sdmmc.c b/drivers/mmc/host/rk_sdmmc.c
index 227bc7efa9b2..e4488a8de558 100755
--- a/drivers/mmc/host/rk_sdmmc.c
+++ b/drivers/mmc/host/rk_sdmmc.c
@@ -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);
 	}