1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * USB
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun #include <linux/dma-mapping.h>
6*4882a593Smuzhiyun #include <linux/init.h>
7*4882a593Smuzhiyun #include <linux/platform_device.h>
8*4882a593Smuzhiyun #include <linux/platform_data/usb-davinci.h>
9*4882a593Smuzhiyun #include <linux/usb/musb.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <mach/common.h>
12*4882a593Smuzhiyun #include <mach/cputype.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include "irqs.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #define DAVINCI_USB_OTG_BASE 0x01c64000
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
19*4882a593Smuzhiyun static struct musb_hdrc_config musb_config = {
20*4882a593Smuzhiyun .multipoint = true,
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun .num_eps = 5,
23*4882a593Smuzhiyun .ram_bits = 10,
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun static struct musb_hdrc_platform_data usb_data = {
27*4882a593Smuzhiyun /* OTG requires a Mini-AB connector */
28*4882a593Smuzhiyun .mode = MUSB_OTG,
29*4882a593Smuzhiyun .clock = "usb",
30*4882a593Smuzhiyun .config = &musb_config,
31*4882a593Smuzhiyun };
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun static struct resource usb_resources[] = {
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun /* physical address */
36*4882a593Smuzhiyun .start = DAVINCI_USB_OTG_BASE,
37*4882a593Smuzhiyun .end = DAVINCI_USB_OTG_BASE + 0x5ff,
38*4882a593Smuzhiyun .flags = IORESOURCE_MEM,
39*4882a593Smuzhiyun },
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun .start = DAVINCI_INTC_IRQ(IRQ_USBINT),
42*4882a593Smuzhiyun .flags = IORESOURCE_IRQ,
43*4882a593Smuzhiyun .name = "mc"
44*4882a593Smuzhiyun },
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun /* placeholder for the dedicated CPPI IRQ */
47*4882a593Smuzhiyun .flags = IORESOURCE_IRQ,
48*4882a593Smuzhiyun .name = "dma"
49*4882a593Smuzhiyun },
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun static u64 usb_dmamask = DMA_BIT_MASK(32);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun static struct platform_device usb_dev = {
55*4882a593Smuzhiyun .name = "musb-davinci",
56*4882a593Smuzhiyun .id = -1,
57*4882a593Smuzhiyun .dev = {
58*4882a593Smuzhiyun .platform_data = &usb_data,
59*4882a593Smuzhiyun .dma_mask = &usb_dmamask,
60*4882a593Smuzhiyun .coherent_dma_mask = DMA_BIT_MASK(32),
61*4882a593Smuzhiyun },
62*4882a593Smuzhiyun .resource = usb_resources,
63*4882a593Smuzhiyun .num_resources = ARRAY_SIZE(usb_resources),
64*4882a593Smuzhiyun };
65*4882a593Smuzhiyun
davinci_setup_usb(unsigned mA,unsigned potpgt_ms)66*4882a593Smuzhiyun void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun usb_data.power = mA > 510 ? 255 : mA / 2;
69*4882a593Smuzhiyun usb_data.potpgt = (potpgt_ms + 1) / 2;
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun if (cpu_is_davinci_dm646x()) {
72*4882a593Smuzhiyun /* Override the defaults as DM6467 uses different IRQs. */
73*4882a593Smuzhiyun usb_dev.resource[1].start = DAVINCI_INTC_IRQ(IRQ_DM646X_USBINT);
74*4882a593Smuzhiyun usb_dev.resource[2].start = DAVINCI_INTC_IRQ(
75*4882a593Smuzhiyun IRQ_DM646X_USBDMAINT);
76*4882a593Smuzhiyun } else /* other devices don't have dedicated CPPI IRQ */
77*4882a593Smuzhiyun usb_dev.num_resources = 2;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun platform_device_register(&usb_dev);
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun #else
83*4882a593Smuzhiyun
davinci_setup_usb(unsigned mA,unsigned potpgt_ms)84*4882a593Smuzhiyun void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun #endif /* CONFIG_USB_MUSB_HDRC */
89