mirror of
https://github.com/AsahiLinux/u-boot
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676ae068d9
Kill off ehci-core.h It was used to specify some static controller data. To support more than one controller being active at any time we have to carry the controller data ourselfes. Change the ehci interface accordingly. NOTE: OMAP implemented the ehci stuff a bit backwards and should be fixed to do the same thing as other platforms. But the change for now is at least compile clean. Signed-off-by: Lucas Stach <dev@lynxeye.de> Reviewed-by: Marek Vasut <marex@denx.de>
88 lines
2.4 KiB
C
88 lines
2.4 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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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <usb.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/clk.h>
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#include "ehci.h"
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/* Enable UTMI PLL time out 500us
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* 10 times as datasheet specified
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*/
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#define EN_UPLL_TIMEOUT 500UL
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int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
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{
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at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
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ulong start_time, tmp_time;
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start_time = get_timer(0);
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/* Enable UTMI PLL */
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writel(AT91_PMC_UPLLEN | AT91_PMC_BIASEN, &pmc->uckr);
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while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU) {
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WATCHDOG_RESET();
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tmp_time = get_timer(0);
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if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) {
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printf("ERROR: failed to enable UPLL\n");
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return -1;
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}
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}
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/* Enable USB Host clock */
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writel(1 << ATMEL_ID_UHPHS, &pmc->pcer);
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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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at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
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ulong start_time, tmp_time;
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/* Disable USB Host Clock */
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writel(1 << ATMEL_ID_UHPHS, &pmc->pcdr);
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start_time = get_timer(0);
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/* Disable UTMI PLL */
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writel(readl(&pmc->uckr) & ~AT91_PMC_UPLLEN, &pmc->uckr);
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while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU) {
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WATCHDOG_RESET();
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tmp_time = get_timer(0);
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if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) {
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printf("ERROR: failed to stop UPLL\n");
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return -1;
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}
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}
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return 0;
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}
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