Commit fe0e422c authored by Phil Elwell's avatar Phil Elwell Committed by Lee Jones
Browse files

mfd: bcm2835-pm: Introduce SoC-specific type identifier 



Power management blocks across the BCM2835 family share a common
base but require variant-specific handling. For instance, the
BCM2712 lacks ASB register space, yet it manages the power domain
for the V3D graphics block.

Add a hardware type identifier to the driver's private data. This
allows the driver to distinguish between SoC models and implement
custom quirks or features as needed.

Signed-off-by: default avatarPhil Elwell <phil@raspberrypi.com>
Co-developed-by: default avatarStanimir Varbanov <svarbanov@suse.de>
Signed-off-by: default avatarStanimir Varbanov <svarbanov@suse.de>
Signed-off-by: default avatarAndrea della Porta <andrea.porta@suse.com>
Reviewed-by: default avatarFlorian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/c4bb218654e91f312a01b419d3d408e5131f7673.1772839224.git.andrea.porta@suse.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent c7be85a3

drivers/mfd/bcm2835-pm.c

+4 −3
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ static int bcm2835_pm_probe(struct platform_device *pdev) 
	platform_set_drvdata(pdev, pm);



	pm->dev = dev;

	pm->soc = (uintptr_t)device_get_match_data(dev);



	ret = bcm2835_pm_get_pdata(pdev, pm);

	if (ret)
@@ -106,9 +107,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev) 


static const struct of_device_id bcm2835_pm_of_match[] = {

	{ .compatible = "brcm,bcm2835-pm-wdt", },

	{ .compatible = "brcm,bcm2835-pm", },

	{ .compatible = "brcm,bcm2711-pm", },

	{ .compatible = "brcm,bcm2712-pm", },

	{ .compatible = "brcm,bcm2835-pm", .data = (void *)BCM2835_PM_SOC_BCM2835 },

	{ .compatible = "brcm,bcm2711-pm", .data = (void *)BCM2835_PM_SOC_BCM2711 },

	{ .compatible = "brcm,bcm2712-pm", .data = (void *)BCM2835_PM_SOC_BCM2712 },

	{},

};

MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);

include/linux/mfd/bcm2835-pm.h

+7 −0
Original line number Diff line number Diff line
@@ -5,11 +5,18 @@ 


#include <linux/regmap.h>



enum bcm2835_soc {

	BCM2835_PM_SOC_BCM2835,

	BCM2835_PM_SOC_BCM2711,

	BCM2835_PM_SOC_BCM2712,

};



struct bcm2835_pm {

	struct device *dev;

	void __iomem *base;

	void __iomem *asb;

	void __iomem *rpivid_asb;

	enum bcm2835_soc soc;

};



#endif /* BCM2835_MFD_PM_H */