Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
authored by
Adrian Hunter
and committed by
Alexandre Belloni
6f6efdd1
9dfa23c4
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drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
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-7
drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
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#define INTEL_RESETS_RESET_DONE BIT(1)
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#define INTEL_RESETS_TIMEOUT_US (10 * USEC_PER_MSEC)
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static void intel_reset(void __iomem *priv)
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{
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u32 reg;
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+
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/* Assert reset, wait for completion and release reset */
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writel(0, priv + INTEL_RESETS);
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readl_poll_timeout(priv + INTEL_RESETS, reg,
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reg & INTEL_RESETS_RESET_DONE, 0,
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INTEL_RESETS_TIMEOUT_US);
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writel(INTEL_RESETS_RESET, priv + INTEL_RESETS);
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}
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static void __iomem *intel_priv(struct pci_dev *pci)
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{
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resource_size_t base = pci_resource_start(pci, 0);
···
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static int intel_i3c_init(struct pci_dev *pci)
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{
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void __iomem *priv = intel_priv(pci);
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u32 reg;
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if (!priv)
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return -ENOMEM;
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dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(64));
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/* Assert reset, wait for completion and release reset */
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writel(0, priv + INTEL_RESETS);
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readl_poll_timeout(priv + INTEL_RESETS, reg,
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reg & INTEL_RESETS_RESET_DONE, 0,
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INTEL_RESETS_TIMEOUT_US);
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writel(INTEL_RESETS_RESET, priv + INTEL_RESETS);
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intel_reset(priv);
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return 0;
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}