[mirror_ubuntu-eoan-kernel.git] / arch / arm / mach-davinci / usb.c

// SPDX-License-Identifier: GPL-2.0
/*
 * USB
 */
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>

#include <linux/usb/musb.h>

#include <mach/common.h>
#include <mach/irqs.h>
#include <mach/cputype.h>
#include <linux/platform_data/usb-davinci.h>

#define DAVINCI_USB_OTG_BASE	0x01c64000

#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
static struct musb_hdrc_config musb_config = {
	.multipoint	= true,

	.num_eps	= 5,
	.ram_bits	= 10,
};

static struct musb_hdrc_platform_data usb_data = {
	/* OTG requires a Mini-AB connector */
	.mode           = MUSB_OTG,
	.clock		= "usb",
	.config		= &musb_config,
};

static struct resource usb_resources[] = {
	{
		/* physical address */
		.start          = DAVINCI_USB_OTG_BASE,
		.end            = DAVINCI_USB_OTG_BASE + 0x5ff,
		.flags          = IORESOURCE_MEM,
	},
	{
		.start          = IRQ_USBINT,
		.flags          = IORESOURCE_IRQ,
		.name		= "mc"
	},
	{
		/* placeholder for the dedicated CPPI IRQ */
		.flags          = IORESOURCE_IRQ,
		.name		= "dma"
	},
};

static u64 usb_dmamask = DMA_BIT_MASK(32);

static struct platform_device usb_dev = {
	.name           = "musb-davinci",
	.id             = -1,
	.dev = {
		.platform_data		= &usb_data,
		.dma_mask		= &usb_dmamask,
		.coherent_dma_mask      = DMA_BIT_MASK(32),
	},
	.resource       = usb_resources,
	.num_resources  = ARRAY_SIZE(usb_resources),
};

void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
{
	usb_data.power = mA > 510 ? 255 : mA / 2;
	usb_data.potpgt = (potpgt_ms + 1) / 2;

	if (cpu_is_davinci_dm646x()) {
		/* Override the defaults as DM6467 uses different IRQs. */
		usb_dev.resource[1].start = IRQ_DM646X_USBINT;
		usb_dev.resource[2].start = IRQ_DM646X_USBDMAINT;
	} else	/* other devices don't have dedicated CPPI IRQ */
		usb_dev.num_resources = 2;

	platform_device_register(&usb_dev);
}

#else

void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
{
}

#endif  /* CONFIG_USB_MUSB_HDRC */
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
cece6e5a DB	2	/*
	3	* USB
	4	*/
cece6e5a DB	5	#include <linux/init.h>
	6	#include <linux/platform_device.h>
	7	#include <linux/dma-mapping.h>
	8
	9	#include <linux/usb/musb.h>
cece6e5a DB	10
cece6e5a DB	11	#include <mach/common.h>
d0e58ae7	12	#include <mach/irqs.h>
efd91181	13	#include <mach/cputype.h>
ec2a0833	14	#include <linux/platform_data/usb-davinci.h>
cece6e5a	15
e5d3d252	16	#define DAVINCI_USB_OTG_BASE 0x01c64000
b0ea26e1	17
a0a56db9	18	#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
cece6e5a DB	19	static struct musb_hdrc_config musb_config = {
cece6e5a DB	20	.multipoint = true,
cece6e5a DB	21
cece6e5a DB	22	.num_eps = 5,
cece6e5a	23	.ram_bits = 10,
cece6e5a DB	24	};
	25
	26	static struct musb_hdrc_platform_data usb_data = {
cece6e5a DB	27	/* OTG requires a Mini-AB connector */
cece6e5a DB	28	.mode = MUSB_OTG,
34f32c97	29	.clock = "usb",
cece6e5a DB	30	.config = &musb_config,
	31	};
	32
	33	static struct resource usb_resources[] = {
	34	{
	35	/* physical address */
	36	.start = DAVINCI_USB_OTG_BASE,
	37	.end = DAVINCI_USB_OTG_BASE + 0x5ff,
	38	.flags = IORESOURCE_MEM,
	39	},
	40	{
	41	.start = IRQ_USBINT,
	42	.flags = IORESOURCE_IRQ,
fcf173e4	43	.name = "mc"
cece6e5a	44	},
efd91181 SS	45	{
	46	/* placeholder for the dedicated CPPI IRQ */
	47	.flags = IORESOURCE_IRQ,
fcf173e4	48	.name = "dma"
efd91181	49	},
cece6e5a DB	50	};
cece6e5a DB	51
284901a9	52	static u64 usb_dmamask = DMA_BIT_MASK(32);
cece6e5a DB	53
cece6e5a DB	54	static struct platform_device usb_dev = {
73b089b0	55	.name = "musb-davinci",
cece6e5a DB	56	.id = -1,
	57	.dev = {
	58	.platform_data = &usb_data,
	59	.dma_mask = &usb_dmamask,
284901a9	60	.coherent_dma_mask = DMA_BIT_MASK(32),
cece6e5a DB	61	},
	62	.resource = usb_resources,
	63	.num_resources = ARRAY_SIZE(usb_resources),
	64	};
	65
355fb4e3	66	void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
cece6e5a	67	{
355fb4e3 SS	68	usb_data.power = mA > 510 ? 255 : mA / 2;
355fb4e3 SS	69	usb_data.potpgt = (potpgt_ms + 1) / 2;
efd91181 SS	70
	71	if (cpu_is_davinci_dm646x()) {
	72	/* Override the defaults as DM6467 uses different IRQs. */
	73	usb_dev.resource[1].start = IRQ_DM646X_USBINT;
	74	usb_dev.resource[2].start = IRQ_DM646X_USBDMAINT;
	75	} else /* other devices don't have dedicated CPPI IRQ */
	76	usb_dev.num_resources = 2;
	77
cece6e5a DB	78	platform_device_register(&usb_dev);
	79	}
	80
	81	#else
	82
355fb4e3	83	void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
cece6e5a DB	84	{
	85	}
	86
	87	#endif /* CONFIG_USB_MUSB_HDRC */