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88 lines
2.0 KiB
88 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* USB |
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*/ |
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#include <linux/dma-mapping.h> |
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#include <linux/init.h> |
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#include <linux/platform_device.h> |
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#include <linux/platform_data/usb-davinci.h> |
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#include <linux/usb/musb.h> |
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#include <mach/common.h> |
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#include <mach/cputype.h> |
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#include "irqs.h" |
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#define DAVINCI_USB_OTG_BASE 0x01c64000 |
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#if IS_ENABLED(CONFIG_USB_MUSB_HDRC) |
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static struct musb_hdrc_config musb_config = { |
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.multipoint = true, |
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.num_eps = 5, |
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.ram_bits = 10, |
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}; |
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static struct musb_hdrc_platform_data usb_data = { |
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/* OTG requires a Mini-AB connector */ |
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.mode = MUSB_OTG, |
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.clock = "usb", |
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.config = &musb_config, |
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}; |
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static struct resource usb_resources[] = { |
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{ |
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/* physical address */ |
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.start = DAVINCI_USB_OTG_BASE, |
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.end = DAVINCI_USB_OTG_BASE + 0x5ff, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = DAVINCI_INTC_IRQ(IRQ_USBINT), |
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.flags = IORESOURCE_IRQ, |
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.name = "mc" |
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}, |
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{ |
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/* placeholder for the dedicated CPPI IRQ */ |
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.flags = IORESOURCE_IRQ, |
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.name = "dma" |
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}, |
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}; |
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static u64 usb_dmamask = DMA_BIT_MASK(32); |
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static struct platform_device usb_dev = { |
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.name = "musb-davinci", |
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.id = -1, |
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.dev = { |
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.platform_data = &usb_data, |
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.dma_mask = &usb_dmamask, |
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.coherent_dma_mask = DMA_BIT_MASK(32), |
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}, |
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.resource = usb_resources, |
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.num_resources = ARRAY_SIZE(usb_resources), |
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}; |
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void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms) |
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{ |
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usb_data.power = mA > 510 ? 255 : mA / 2; |
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usb_data.potpgt = (potpgt_ms + 1) / 2; |
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if (cpu_is_davinci_dm646x()) { |
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/* Override the defaults as DM6467 uses different IRQs. */ |
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usb_dev.resource[1].start = DAVINCI_INTC_IRQ(IRQ_DM646X_USBINT); |
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usb_dev.resource[2].start = DAVINCI_INTC_IRQ( |
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IRQ_DM646X_USBDMAINT); |
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} else /* other devices don't have dedicated CPPI IRQ */ |
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usb_dev.num_resources = 2; |
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platform_device_register(&usb_dev); |
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} |
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#else |
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void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms) |
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{ |
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} |
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#endif /* CONFIG_USB_MUSB_HDRC */
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