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From: Adrian Hunter <adrian.hunter@intel.com>
To: alexandre.belloni@bootlin.com
Cc: Frank.Li@nxp.com, Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Aniket <aniketmaurya@google.com>,
	linux-i3c@lists.infradead.org
Subject: [PATCH V3 18/21] i3c: mipi-i3c-hci: Factor out master dynamic address setting into helper
Date: Tue, 13 Jan 2026 09:26:59 +0200	[thread overview]
Message-ID: <20260113072702.16268-19-adrian.hunter@intel.com> (raw)
In-Reply-To: <20260113072702.16268-1-adrian.hunter@intel.com>

Prepare for future reuse.  Move master dynamic address setting logic from
i3c_hci_bus_init() into a dedicated helper function,
i3c_hci_set_master_dyn_addr().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---


Changes in V3:

	Add Frank's Rev'd-by

Changes in V2:

	New patch


 drivers/i3c/master/mipi-i3c-hci/core.c | 12 +++++++++---
 drivers/i3c/master/mipi-i3c-hci/hci.h  |  1 +
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c
index fc0a47a36961..ec5425f07635 100644
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -114,6 +114,12 @@ static inline struct i3c_hci *to_i3c_hci(struct i3c_master_controller *m)
 	return container_of(m, struct i3c_hci, master);
 }
 
+static void i3c_hci_set_master_dyn_addr(struct i3c_hci *hci)
+{
+	reg_write(MASTER_DEVICE_ADDR,
+		  MASTER_DYNAMIC_ADDR(hci->dyn_addr) | MASTER_DYNAMIC_ADDR_VALID);
+}
+
 static int i3c_hci_bus_init(struct i3c_master_controller *m)
 {
 	struct i3c_hci *hci = to_i3c_hci(m);
@@ -129,10 +135,10 @@ static int i3c_hci_bus_init(struct i3c_master_controller *m)
 	ret = i3c_master_get_free_addr(m, 0);
 	if (ret < 0)
 		return ret;
-	reg_write(MASTER_DEVICE_ADDR,
-		  MASTER_DYNAMIC_ADDR(ret) | MASTER_DYNAMIC_ADDR_VALID);
+	hci->dyn_addr = ret;
+	i3c_hci_set_master_dyn_addr(hci);
 	memset(&info, 0, sizeof(info));
-	info.dyn_addr = ret;
+	info.dyn_addr = hci->dyn_addr;
 	ret = i3c_master_set_info(m, &info);
 	if (ret)
 		return ret;
diff --git a/drivers/i3c/master/mipi-i3c-hci/hci.h b/drivers/i3c/master/mipi-i3c-hci/hci.h
index 38f927685d3b..ed89228ea971 100644
--- a/drivers/i3c/master/mipi-i3c-hci/hci.h
+++ b/drivers/i3c/master/mipi-i3c-hci/hci.h
@@ -62,6 +62,7 @@ struct i3c_hci {
 	u8 version_major;
 	u8 version_minor;
 	u8 revision;
+	u8 dyn_addr;
 	u32 vendor_mipi_id;
 	u32 vendor_version_id;
 	u32 vendor_product_id;
-- 
2.51.0


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  parent reply	other threads:[~2026-01-13  7:28 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-13  7:26 [PATCH V3 00/21] i3c: mipi-i3c-hci-pci: Add Runtime PM support Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 01/21] i3c: mipi-i3c-hci: Reset RING_OPERATION1 fields during init Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 02/21] i3c: mipi-i3c-hci: Ensure proper bus clean-up Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 03/21] i3c: master: Update hot-join flag only on success Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 04/21] i3c: master: Replace WARN_ON() with dev_err() in i3c_dev_free_ibi_locked() Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 05/21] i3c: mipi-i3c-hci: Switch DAT bitmap allocation to devm_bitmap_zalloc() Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 06/21] i3c: mipi-i3c-hci: Switch PIO data allocation to devm_kzalloc() Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 07/21] i3c: mipi-i3c-hci: Manage DMA deallocation via devres action Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 08/21] i3c: mipi-i3c-hci: Cache DAT in memory for Runtime PM restore Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 09/21] i3c: mipi-i3c-hci: Introduce helper to restore DAT Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 10/21] i3c: mipi-i3c-hci: Extract ring initialization from hci_dma_init() Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 11/21] i3c: mipi-i3c-hci: Add DMA suspend and resume support Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 12/21] i3c: mipi-i3c-hci: Refactor PIO register initialization Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 13/21] i3c: mipi-i3c-hci: Add PIO suspend and resume support Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 14/21] i3c: mipi-i3c-hci: Factor out software reset into helper Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 15/21] i3c: mipi-i3c-hci: Factor out IO mode setting " Adrian Hunter
2026-01-13  7:26 ` [PATCH V3 16/21] i3c: mipi-i3c-hci: Factor out core initialization " Adrian Hunter
2026-01-13 16:27   ` Frank Li
2026-01-13 17:27     ` Adrian Hunter
2026-01-13 17:48       ` Frank Li
2026-01-13  7:26 ` [PATCH V3 17/21] i3c: mipi-i3c-hci: Allow core re-initialization for Runtime PM support Adrian Hunter
2026-01-13 16:31   ` Frank Li
2026-01-13  7:26 ` Adrian Hunter [this message]
2026-01-13  7:27 ` [PATCH V3 19/21] i3c: master: Introduce optional " Adrian Hunter
2026-01-13  7:27 ` [PATCH V3 20/21] i3c: mipi-i3c-hci: Add " Adrian Hunter
2026-01-13  7:27 ` [PATCH V3 21/21] i3c: mipi-i3c-hci-pci: Add " Adrian Hunter
2026-01-14 16:44 ` [PATCH V3 00/21] " Alexandre Belloni

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