Commit 98d87600 authored by Stanley Chu's avatar Stanley Chu Committed by Alexandre Belloni
Browse files

i3c: master: svc: Add support for Nuvoton npcm845 i3c 



Nuvoton npcm845 SoC uses an older IP version, which has specific
hardware issues that need to be addressed with a different compatible
string.

Add driver data for different compatible strings to define platform
specific quirks.
Add compatible string for npcm845 to define its own driver data.

Signed-off-by: default avatarStanley Chu <yschu@nuvoton.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250306075429.2265183-3-yschu@nuvoton.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent c24a084a

drivers/i3c/master/svc-i3c-master.c

+16 −1
Original line number Diff line number Diff line
@@ -158,6 +158,10 @@ struct svc_i3c_regs_save { 
	u32 mdynaddr;

};



struct svc_i3c_drvdata {

	u32 quirks;

};



/**

 * struct svc_i3c_master - Silvaco I3C Master structure

 * @base: I3C master controller
@@ -183,6 +187,7 @@ struct svc_i3c_regs_save { 
 * @ibi.tbq_slot: To be queued IBI slot

 * @ibi.lock: IBI lock

 * @lock: Transfer lock, protect between IBI work thread and callbacks from master

 * @drvdata: Driver data

 * @enabled_events: Bit masks for enable events (IBI, HotJoin).

 * @mctrl_config: Configuration value in SVC_I3C_MCTRL for setting speed back.

 */
@@ -214,6 +219,7 @@ struct svc_i3c_master { 
		spinlock_t lock;

	} ibi;

	struct mutex lock;

	const struct svc_i3c_drvdata *drvdata;

	u32 enabled_events;

	u32 mctrl_config;

};
@@ -1819,6 +1825,10 @@ static int svc_i3c_master_probe(struct platform_device *pdev) 
	if (!master)

		return -ENOMEM;



	master->drvdata = of_device_get_match_data(dev);

	if (!master->drvdata)

		return -EINVAL;



	master->regs = devm_platform_ioremap_resource(pdev, 0);

	if (IS_ERR(master->regs))

		return PTR_ERR(master->regs);
@@ -1960,8 +1970,13 @@ static const struct dev_pm_ops svc_i3c_pm_ops = { 
			   svc_i3c_runtime_resume, NULL)

};



static const struct svc_i3c_drvdata npcm845_drvdata = {};



static const struct svc_i3c_drvdata svc_default_drvdata = {};



static const struct of_device_id svc_i3c_master_of_match_tbl[] = {

	{ .compatible = "silvaco,i3c-master-v1"},

	{ .compatible = "nuvoton,npcm845-i3c", .data = &npcm845_drvdata },

	{ .compatible = "silvaco,i3c-master-v1", .data = &svc_default_drvdata },

	{ /* sentinel */ },

};

MODULE_DEVICE_TABLE(of, svc_i3c_master_of_match_tbl);