Commit 6f6efdd1 authored by Adrian Hunter's avatar Adrian Hunter Committed by Alexandre Belloni
Browse files

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



For neatness, factor out intel_reset().

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251128064038.55158-8-adrian.hunter@intel.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 9dfa23c4

drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c

+13 −7
Original line number Diff line number Diff line
@@ -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;

}