88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
// 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/init.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/musb.h>
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#include <mach/common.h>
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#include <mach/irqs.h>
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#include <mach/cputype.h>
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#include <linux/platform_data/usb-davinci.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 = 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 = IRQ_DM646X_USBINT;
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usb_dev.resource[2].start = 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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