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

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[ Upstream commit 98d87600a04e42282797631aa6b98dd43999e274 ]

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: Stanley Chu <yschu@nuvoton.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250306075429.2265183-3-yschu@nuvoton.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stanley Chu
2025-03-06 15:54:26 +08:00
committed by Greg Kroah-Hartman
parent 635be13606
commit 69bb5d420d
1 changed files with 16 additions and 1 deletions
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17
drivers/i3c/master/svc-i3c-master.c
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@@ -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;
};
@@ -1768,6 +1774,10 @@ 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);
@@ -1909,8 +1919,13 @@ 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);