mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-01 15:53:46 +09:00
d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
132 lines
2.5 KiB
C
132 lines
2.5 KiB
C
/*
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* (C) Copyright 2012
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* Atmel Semiconductor <www.atmel.com>
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* Written-by: Bo Shen <voice.shen@atmel.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <usb.h>
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#include <asm/io.h>
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#include <asm/arch/clk.h>
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#include "ehci.h"
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#ifndef CONFIG_DM_USB
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int ehci_hcd_init(int index, enum usb_init_type init,
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struct ehci_hccr **hccr, struct ehci_hcor **hcor)
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{
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/* Enable UTMI PLL */
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if (at91_upll_clk_enable())
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return -1;
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/* Enable USB Host clock */
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at91_periph_clk_enable(ATMEL_ID_UHPHS);
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*hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
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*hcor = (struct ehci_hcor *)((uint32_t)*hccr +
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HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
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return 0;
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}
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int ehci_hcd_stop(int index)
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{
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/* Disable USB Host Clock */
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at91_periph_clk_disable(ATMEL_ID_UHPHS);
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/* Disable UTMI PLL */
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if (at91_upll_clk_disable())
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return -1;
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return 0;
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}
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#else
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struct ehci_atmel_priv {
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struct ehci_ctrl ehci;
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};
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static int ehci_atmel_enable_clk(struct udevice *dev)
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{
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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ret = clk_enable(&clk);
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if (ret)
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return ret;
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ret = clk_get_by_index(dev, 1, &clk);
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if (ret)
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return -EINVAL;
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ret = clk_enable(&clk);
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if (ret)
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return ret;
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clk_free(&clk);
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return 0;
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}
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static int ehci_atmel_probe(struct udevice *dev)
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{
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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fdt_addr_t hcd_base;
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int ret;
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ret = ehci_atmel_enable_clk(dev);
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if (ret) {
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debug("Failed to enable USB Host clock\n");
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return ret;
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}
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/*
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* Get the base address for EHCI controller from the device node
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*/
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hcd_base = devfdt_get_addr(dev);
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if (hcd_base == FDT_ADDR_T_NONE) {
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debug("Can't get the EHCI register base address\n");
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return -ENXIO;
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}
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hccr = (struct ehci_hccr *)hcd_base;
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hcor = (struct ehci_hcor *)
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((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n",
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(u32)hccr, (u32)hcor,
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(u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
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}
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static const struct udevice_id ehci_usb_ids[] = {
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{ .compatible = "atmel,at91sam9g45-ehci", },
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{ }
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};
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U_BOOT_DRIVER(ehci_atmel) = {
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.name = "ehci_atmel",
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.id = UCLASS_USB,
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.of_match = ehci_usb_ids,
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.probe = ehci_atmel_probe,
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.remove = ehci_deregister,
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.ops = &ehci_usb_ops,
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.platdata_auto_alloc_size = sizeof(struct usb_platdata),
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.priv_auto_alloc_size = sizeof(struct ehci_atmel_priv),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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#endif
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