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mmc: dw_mmc: Extract FIFO init into a separate routine

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Move FIFO threshold initialization into a separate function to make
dwmci_init() more readable.

No functional change.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Sam Protsenko
2024-08-07 22:14:10 -05:00
committed by Minkyu Kang
parent 2015f24f78
commit 1db6dd1fef
1 changed files with 15 additions and 10 deletions
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25
drivers/mmc/dw_mmc.c
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@@ -538,6 +538,20 @@ static int dwmci_set_ios(struct mmc *mmc)
return 0;
}
static void dwmci_init_fifo(struct dwmci_host *host)
{
if (!host->fifoth_val) {
u32 fifo_size;
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);
}
dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
}
static int dwmci_init(struct mmc *mmc)
{
struct dwmci_host *host = mmc->priv;
@@ -562,16 +576,7 @@ static int dwmci_init(struct mmc *mmc)
dwmci_writel(host, DWMCI_IDINTEN, 0);
dwmci_writel(host, DWMCI_BMOD, 1);
if (!host->fifoth_val) {
uint32_t fifo_size;
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);
}
dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
dwmci_init_fifo(host);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);