static int dwmci_init(struct mci_host *mci, struct device_d *dev)
{
struct dwmci_host *host = to_dwmci_host(mci);
uint32_t fifo_size;
dwmci_writel(host, DWMCI_PWREN, host->pwren_value);
if (dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
dev_err(host->dev, "reset failed\n");
return -EIO;
}
dwmci_writel(host, DWMCI_RINTSTS, 0xffffffff);
dwmci_writel(host, DWMCI_INTMASK, 0);
dwmci_writel(host, DWMCI_TMOUT, 0xffffffff);
dwmci_writel(host, DWMCI_IDINTEN, 0);
dwmci_writel(host, DWMCI_BMOD, 1);
fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
/*
* Use reset default of the rx_wmark field to determine the
* fifo depth.
*/
fifo_size = DWMCI_FIFOTH_FIFO_DEPTH(fifo_size);
host->fifo_size_bytes = fifo_size * 4;
/*
* If fifo-depth property is set, use this value
*/
if (!of_property_read_u32(host->dev->device_node,
"fifo-depth", &fifo_size)) {
host->fifo_size_bytes = fifo_size;
dev_dbg(host->dev, "Using fifo-depth=%u\n",
host->fifo_size_bytes);
}
host->fifoth_val = DWMCI_FIFOTH_MSIZE(0x2) |
DWMCI_FIFOTH_RX_WMARK(fifo_size / 2 - 1) |
DWMCI_FIFOTH_TX_WMARK(fifo_size / 2);
dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);
return 0;
}
static int dwmci_init(struct mci_host *mci, struct device_d *dev)
{
struct dwmci_host *host = to_dwmci_host(mci);
uint32_t fifo_size, fifoth_val;
dwmci_writel(host, DWMCI_PWREN, 1);
if (dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
dev_err(host->dev, "reset failed\n");
return -EIO;
}
dwmci_writel(host, DWMCI_RINTSTS, 0xffffffff);
dwmci_writel(host, DWMCI_INTMASK, 0);
dwmci_writel(host, DWMCI_TMOUT, 0xffffffff);
dwmci_writel(host, DWMCI_IDINTEN, 0);
dwmci_writel(host, DWMCI_BMOD, 1);
fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
/*
* Use reset default of the rx_wmark field to determine the
* fifo depth.
*/
fifo_size = DWMCI_FIFOTH_FIFO_DEPTH(fifo_size);
host->fifo_size_bytes = fifo_size * 4;
fifoth_val = DWMCI_FIFOTH_MSIZE(0x2) |
DWMCI_FIFOTH_RX_WMARK(fifo_size / 2 - 1) |
DWMCI_FIFOTH_TX_WMARK(fifo_size / 2);
dwmci_writel(host, DWMCI_FIFOTH, fifoth_val);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);
return 0;
}