| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * USB |
| */ |
| #include <linux/dma-mapping.h> |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/platform_data/usb-davinci.h> |
| #include <linux/usb/musb.h> |
| |
| #include "common.h" |
| #include "cputype.h" |
| #include "irqs.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 = DAVINCI_INTC_IRQ(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 = DAVINCI_INTC_IRQ(IRQ_DM646X_USBINT); |
| usb_dev.resource[2].start = DAVINCI_INTC_IRQ( |
| 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 */ |