i3c: mipi-i3c-hci-pci: Factor out intel_reset()

For neatness, factor out intel_reset().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251128064038.55158-8-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
index 1e1f2c42bd7490cbbf23b5f0bd34b78992d693f6..b9794212b2fbe5827fca6a4b15c010d1bbf80b15 100644 (file)
--- a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
+++ b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
@@ -27,6 +27,18 @@ static DEFINE_IDA(mipi_i3c_hci_pci_ida);
 #define INTEL_RESETS_RESET_DONE                BIT(1)
 #define INTEL_RESETS_TIMEOUT_US                (10 * USEC_PER_MSEC)
 
+static void intel_reset(void __iomem *priv)
+{
+       u32 reg;
+
+       /* Assert reset, wait for completion and release reset */
+       writel(0, priv + INTEL_RESETS);
+       readl_poll_timeout(priv + INTEL_RESETS, reg,
+                          reg & INTEL_RESETS_RESET_DONE, 0,
+                          INTEL_RESETS_TIMEOUT_US);
+       writel(INTEL_RESETS_RESET, priv + INTEL_RESETS);
+}
+
 static void __iomem *intel_priv(struct pci_dev *pci)
 {
        resource_size_t base = pci_resource_start(pci, 0);
@@ -37,19 +49,13 @@ static void __iomem *intel_priv(struct pci_dev *pci)
 static int intel_i3c_init(struct pci_dev *pci)
 {
        void __iomem *priv = intel_priv(pci);
-       u32 reg;
 
        if (!priv)
                return -ENOMEM;
 
        dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(64));
 
-       /* Assert reset, wait for completion and release reset */
-       writel(0, priv + INTEL_RESETS);
-       readl_poll_timeout(priv + INTEL_RESETS, reg,
-                          reg & INTEL_RESETS_RESET_DONE, 0,
-                          INTEL_RESETS_TIMEOUT_US);
-       writel(INTEL_RESETS_RESET, priv + INTEL_RESETS);
+       intel_reset(priv);
 
        return 0;
 }