[U-Boot] [PATCH 7/8] tegra: usb: move implementation into right directory

Lucas Stach
2012-10-30T09:22:52Z

This moves the Tegra USB implementation into the drivers/usb/host
directory.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
---
arch/arm/cpu/armv7/tegra20/Makefile | 2 -
.../tegra20/usb.c => drivers/usb/host/ehci-tegra.c | 60 ++++++++++++++++++++--
2 Dateien ge?ndert, 55 Zeilen hinzugef?gt(+), 7 Zeilen entfernt(-)
rename arch/arm/cpu/armv7/tegra20/usb.c => drivers/usb/host/ehci-tegra.c (92%)

diff --git a/arch/arm/cpu/armv7/tegra20/Makefile b/arch/arm/cpu/armv7/tegra20/Makefile
index 09a0314..2c4d5c9 100644
--- a/arch/arm/cpu/armv7/tegra20/Makefile
+++ b/arch/arm/cpu/armv7/tegra20/Makefile
@@ -27,8 +27,6 @@ include $(TOPDIR)/config.mk

LIB = $(obj)lib$(SOC).o

-COBJS-$(CONFIG_USB_EHCI_TEGRA) += usb.o
-
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
diff --git a/arch/arm/cpu/armv7/tegra20/usb.c b/drivers/usb/host/ehci-tegra.c
similarity index 92%
rename from arch/arm/cpu/armv7/tegra20/usb.c
rename to drivers/usb/host/ehci-tegra.c
index 2cc95d2..3df43a9 100644
--- a/arch/arm/cpu/armv7/tegra20/usb.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -1,6 +1,7 @@
/*
+ * Copyright (c) 2009-2012 NVIDIA Corporation
* Copyright (c) 2011 The Chromium OS Authors.
- * (C) Copyright 2010,2011 NVIDIA Corporation <www.nvidia.com>
+ * Copyright (c) 2012 Lucas Stach
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -21,14 +22,16 @@
* MA 02111-1307 USA
*/

-#include <common.h>
#include <asm/io.h>
-#include <asm-generic/gpio.h>
#include <asm/arch/clock.h>
#include <asm/arch/usb.h>
-#include <usb/ulpi.h>
-#include <libfdt.h>
+#include <asm-generic/gpio.h>
+#include <common.h>
#include <fdtdec.h>
+#include <libfdt.h>
+#include <usb.h>
+#include <usb/ulpi.h>
+#include "ehci.h"

#ifdef CONFIG_USB_ULPI
#ifndef CONFIG_USB_ULPI_VIEWPORT
@@ -138,6 +141,23 @@ static const u8 utmip_elastic_limit = 16;
/* UTMIP High Speed Sync Start Delay */
static const u8 utmip_hs_sync_start_delay = 9;

+/*
+ * A known hardware issue where Connect Status Change bit of PORTSC register
+ * of USB1 controller will be set after Port Reset.
+ * We have to clear it in order for later device enumeration to proceed.
+ * This ehci_powerup_fixup overrides the weak function ehci_powerup_fixup
+ * in "ehci-hcd.c".
+ */
+void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
+{
+ mdelay(50);
+ if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE)
+ return;
+ /* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
+ if (ehci_readl(status_reg) & EHCI_PS_CSC)
+ *reg |= EHCI_PS_CSC;
+}
+
/* Put the port into host mode */
static void set_host_mode(struct fdt_usb *config)
{
@@ -534,3 +554,33 @@ int board_usb_init(const void *blob)

return 0;
}
+
+/*
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ */
+int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+ u32 our_hccr, our_hcor;
+
+ /*
+ * Select the first port, as we don't have a way of selecting others
+ * yet
+ */
+ if (tegrausb_start_port(index, &our_hccr, &our_hcor))
+ return -1;
+
+ *hccr = (struct ehci_hccr *)our_hccr;
+ *hcor = (struct ehci_hcor *)our_hcor;
+
+ return 0;
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the the EHCI host controller.
+ */
+int ehci_hcd_stop(int index)
+{
+ return tegrausb_stop_port(index);
+}
--
1.7.11.7