Commit d1d67868 authored by Kevin Cernekee's avatar Kevin Cernekee Committed by Florian Fainelli
Browse files

bus: brcmstb_gisb: Add register offset tables for older chips 



This will select the appropriate register layout based on the DT
"compatible" string.

Signed-off-by: default avatarKevin Cernekee <cernekee@gmail.com>
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
parent f8083587

Documentation/devicetree/bindings/bus/brcm,gisb-arb.txt

+5 −1
Original line number Diff line number Diff line
@@ -2,7 +2,11 @@ Broadcom GISB bus Arbiter controller 


Required properties:



- compatible: should be "brcm,gisb-arb"

- compatible:

    "brcm,gisb-arb" or "brcm,bcm7445-gisb-arb" for 28nm chips

    "brcm,bcm7435-gisb-arb" for newer 40nm chips

    "brcm,bcm7400-gisb-arb" for older 40nm chips and all 65nm chips

    "brcm,bcm7038-gisb-arb" for 130nm chips

- reg: specifies the base physical address and size of the registers

- interrupt-parent: specifies the phandle to the parent interrupt controller

  this arbiter gets interrupt line from

drivers/bus/brcmstb_gisb.c

+46 −6
Original line number Diff line number Diff line
@@ -47,6 +47,36 @@ enum { 
	ARB_ERR_CAP_MASTER,

};



static const int gisb_offsets_bcm7038[] = {

	[ARB_TIMER]		= 0x00c,

	[ARB_ERR_CAP_CLR]	= 0x0c4,

	[ARB_ERR_CAP_HI_ADDR]	= -1,

	[ARB_ERR_CAP_ADDR]	= 0x0c8,

	[ARB_ERR_CAP_DATA]	= 0x0cc,

	[ARB_ERR_CAP_STATUS]	= 0x0d0,

	[ARB_ERR_CAP_MASTER]	= -1,

};



static const int gisb_offsets_bcm7400[] = {

	[ARB_TIMER]		= 0x00c,

	[ARB_ERR_CAP_CLR]	= 0x0c8,

	[ARB_ERR_CAP_HI_ADDR]	= -1,

	[ARB_ERR_CAP_ADDR]	= 0x0cc,

	[ARB_ERR_CAP_DATA]	= 0x0d0,

	[ARB_ERR_CAP_STATUS]	= 0x0d4,

	[ARB_ERR_CAP_MASTER]	= 0x0d8,

};



static const int gisb_offsets_bcm7435[] = {

	[ARB_TIMER]		= 0x00c,

	[ARB_ERR_CAP_CLR]	= 0x168,

	[ARB_ERR_CAP_HI_ADDR]	= -1,

	[ARB_ERR_CAP_ADDR]	= 0x16c,

	[ARB_ERR_CAP_DATA]	= 0x170,

	[ARB_ERR_CAP_STATUS]	= 0x174,

	[ARB_ERR_CAP_MASTER]	= 0x178,

};



static const int gisb_offsets_bcm7445[] = {

	[ARB_TIMER]		= 0x008,

	[ARB_ERR_CAP_CLR]	= 0x7e4,
@@ -230,10 +260,20 @@ static struct attribute_group gisb_arb_sysfs_attr_group = { 
	.attrs = gisb_arb_sysfs_attrs,

};



static const struct of_device_id brcmstb_gisb_arb_of_match[] = {

	{ .compatible = "brcm,gisb-arb",         .data = gisb_offsets_bcm7445 },

	{ .compatible = "brcm,bcm7445-gisb-arb", .data = gisb_offsets_bcm7445 },

	{ .compatible = "brcm,bcm7435-gisb-arb", .data = gisb_offsets_bcm7435 },

	{ .compatible = "brcm,bcm7400-gisb-arb", .data = gisb_offsets_bcm7400 },

	{ .compatible = "brcm,bcm7038-gisb-arb", .data = gisb_offsets_bcm7038 },

	{ },

};



static int brcmstb_gisb_arb_probe(struct platform_device *pdev)

{

	struct device_node *dn = pdev->dev.of_node;

	struct brcmstb_gisb_arb_device *gdev;

	const struct of_device_id *of_id;

	struct resource *r;

	int err, timeout_irq, tea_irq;

	unsigned int num_masters, j = 0;
@@ -254,7 +294,12 @@ static int brcmstb_gisb_arb_probe(struct platform_device *pdev) 
	if (IS_ERR(gdev->base))

		return PTR_ERR(gdev->base);



	gdev->gisb_offsets = gisb_offsets_bcm7445;

	of_id = of_match_node(brcmstb_gisb_arb_of_match, dn);

	if (!of_id) {

		pr_err("failed to look up compatible string\n");

		return -EINVAL;

	}

	gdev->gisb_offsets = of_id->data;



	err = devm_request_irq(&pdev->dev, timeout_irq,

				brcmstb_gisb_timeout_handler, 0, pdev->name,
@@ -307,11 +352,6 @@ static int brcmstb_gisb_arb_probe(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id brcmstb_gisb_arb_of_match[] = {

	{ .compatible = "brcm,gisb-arb" },

	{ },

};



static struct platform_driver brcmstb_gisb_arb_driver = {

	.probe	= brcmstb_gisb_arb_probe,

	.driver = {

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