If platform provides "host->fifoth_val" it will be used for
initialization of DWMCI_FIFOTH register. Otherwise default value will be
used.
This implementation allows:
* escape unclear and recursive calculations that are currently in use
* use whatever custom value for DWMCI_FIFOTH initialization if any
particular SoC requires it
Signed-off-by: Alexey Brodkin <abrod...@synopsys.com>
Cc: Mischa Jonker <mjon...@synopsys.com>
Cc: Alim Akhtar <alim.akh...@samsung.com>
Cc: Rajeshwari Shinde <rajeshwar...@samsung.com>
Cc: Jaehoon Chung <jh80.ch...@samsung.com>
Cc: Amar <amarendra...@samsung.com>
Cc: Kyungmin Park <kyungmin.p...@samsung.com>
Cc: Minkyu Kang <mk7.k...@samsung.com>
Cc: Simon Glass <s...@chromium.org>
Cc: Pantelis Antoniou <pa...@antoniou-consulting.com>
Cc: Andy Fleming <aflem...@freescale.com>
---
drivers/mmc/dw_mmc.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index 1e0f72b..a47e02c 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -300,7 +300,6 @@ static void dwmci_set_ios(struct mmc *mmc)
static int dwmci_init(struct mmc *mmc)
{
struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
- u32 fifo_size;
if (host->quirks & DWMCI_QUIRK_DISABLE_SMU) {
dwmci_writel(host, EMMCP_MPSBEGIN0, 0);
@@ -330,13 +329,9 @@ static int dwmci_init(struct mmc *mmc)
dwmci_writel(host, DWMCI_IDINTEN, 0);
dwmci_writel(host, DWMCI_BMOD, 1);
- if (!host->fifoth_val) {
- fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
- fifo_size = ((fifo_size & RX_WMARK_MASK) >> RX_WMARK_SHIFT) + 1;
- host->fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_size / 2 - 1) |
- TX_WMARK(fifo_size / 2);
+ if (host->fifoth_val) {
+ dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
}
- dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);
--
1.8.4.2
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