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Merge "cnss2: Make sure the write to remap window register take effect"

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qctecmdr 2020-12-18 08:04:00 -08:00 • committed by Gerrit - the friendly Code Review server
commit a33823f357
1 changed files with 13 additions and 4 deletions
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17
drivers/net/wireless/cnss2/pci.c
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@ -393,15 +393,24 @@ int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)
static void cnss_pci_select_window(struct cnss_pci_data *pci_priv, u32 offset)
{
u32 window = (offset >> WINDOW_SHIFT) & WINDOW_VALUE_MASK;
u32 window_enable = WINDOW_ENABLE_BIT | window;
u32 val;
writel_relaxed(WINDOW_ENABLE_BIT | window,
QCA6390_PCIE_REMAP_BAR_CTRL_OFFSET +
pci_priv->bar);
writel_relaxed(window_enable, pci_priv->bar +
QCA6390_PCIE_REMAP_BAR_CTRL_OFFSET);
if (window != pci_priv->remap_window) {
pci_priv->remap_window = window;
cnss_pr_dbg("Config PCIe remap window register to 0x%x\n",
WINDOW_ENABLE_BIT | window);
window_enable);
}
/* Read it back to make sure the write has taken effect */
val = readl_relaxed(pci_priv->bar + QCA6390_PCIE_REMAP_BAR_CTRL_OFFSET);
if (val != window_enable) {
cnss_pr_err("Failed to config window register to 0x%x, current value: 0x%x\n",
window_enable, val);
CNSS_ASSERT(0);
}
}