From: Michal Simek <mon...@monstr.eu> Added USB host driver for zynq.
Signed-off-by: Siva Durga Prasad Paladugu <siva...@xilinx.com>
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
arch/arm/cpu/armv7/zynq/slcr.c | 24 +++++++
arch/arm/include/asm/arch-zynq/hardware.h | 2 +
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-zynq.c | 104 ++++++++++++++++++++++++++++++
4 files changed, 131 insertions(+)
create mode 100644 drivers/usb/host/ehci-zynq.c
diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c
index 51894f9..934ccc3 100644
--- a/arch/arm/cpu/armv7/zynq/slcr.c
+++ b/arch/arm/cpu/armv7/zynq/slcr.c
@@ -14,6 +14,8 @@
#define SLCR_LOCK_MAGIC 0x767B
#define SLCR_UNLOCK_MAGIC 0xDF0D
+#define SLCR_USB_L1_SEL 0x04
+
#define SLCR_IDCODE_MASK 0x1F000
#define SLCR_IDCODE_SHIFT 12
@@ -34,7 +36,29 @@ struct zynq_slcr_mio_get_status {
u32 check_val;
};
+static const int usb0_pins[] = {
+ 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39
+};
+
+static const int usb1_pins[] = {
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+};
+
static const struct zynq_slcr_mio_get_status mio_periphs[] = {
+ {
+ "usb0",
+ usb0_pins,
+ ARRAY_SIZE(usb0_pins),
+ SLCR_USB_L1_SEL,
+ SLCR_USB_L1_SEL,
+ },
+ {
+ "usb1",
+ usb1_pins,
+ ARRAY_SIZE(usb1_pins),
+ SLCR_USB_L1_SEL,
+ SLCR_USB_L1_SEL,
+ },
};
static int slcr_lock = 1; /* 1 means locked, 0 means unlocked */
diff --git a/arch/arm/include/asm/arch-zynq/hardware.h
b/arch/arm/include/asm/arch-zynq/hardware.h
index a9d091f..2aede0c 100644
--- a/arch/arm/include/asm/arch-zynq/hardware.h
+++ b/arch/arm/include/asm/arch-zynq/hardware.h
@@ -23,6 +23,8 @@
#define ZYNQ_SPI_BASEADDR1 0xE0007000
#define ZYNQ_DDRC_BASEADDR 0xF8006000
#define ZYNQ_EFUSE_BASEADDR 0xF800D000
+#define ZYNQ_USB_BASEADDR0 0xE0002000
+#define ZYNQ_USB_BASEADDR1 0xE0003000
/* Bootmode setting values */
#define ZYNQ_BM_MASK 0x7
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 578b097..bf87204 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
obj-$(CONFIG_USB_EHCI_SPEAR) += ehci-spear.o
obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
obj-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o
+obj-$(CONFIG_USB_EHCI_ZYNQ) += ehci-zynq.o
# xhci
obj-$(CONFIG_USB_XHCI) += xhci.o xhci-mem.o xhci-ring.o
diff --git a/drivers/usb/host/ehci-zynq.c b/drivers/usb/host/ehci-zynq.c
new file mode 100644
index 0000000..7770d05
--- /dev/null
+++ b/drivers/usb/host/ehci-zynq.c
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2014, Xilinx, Inc
+ *
+ * USB Low level initialization(Specific to zynq)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+#include <usb.h>
+#include <usb/ehci-fsl.h>
+#include <usb/ulpi.h>
+
+#include "ehci.h"
+
+#define ZYNQ_USB_USBCMD_RST 0x0000002
+#define ZYNQ_USB_USBCMD_STOP 0x0000000
+#define ZYNQ_USB_NUM_MIO 12
+
+/*
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ */
+int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
+ struct ehci_hcor **hcor)
+{
+ struct usb_ehci *ehci;
+ struct ulpi_viewport ulpi_vp;
+ int ret, mio_usb;
+ /* Used for writing the ULPI data address */
+ struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
+
+ if (!index) {
+ mio_usb = zynq_slcr_get_mio_pin_status("usb0");
+ if (mio_usb != ZYNQ_USB_NUM_MIO) {
+ printf("usb0 wrong num MIO: %d, Index %d\n", mio_usb,
+ index);
+ return -1;
+ }
+ ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR0;
+ } else {
+ mio_usb = zynq_slcr_get_mio_pin_status("usb1");
+ if (mio_usb != ZYNQ_USB_NUM_MIO) {
+ printf("usb1 wrong num MIO: %d, Index %d\n", mio_usb,
+ index);
+ return -1;
+ }
+ ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR1;
+ }
+
+ *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
+ *hcor = (struct ehci_hcor *)((uint32_t) *hccr +
+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
+
+ ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
+ ulpi_vp.port_num = 0;
+
+ ret = ulpi_init(&ulpi_vp);
+ if (ret) {
+ puts("zynq ULPI viewport init failed\n");
+ return -1;
+ }
+
+ /* ULPI set flags */
+ ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
+ ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
+ ULPI_OTG_EXTVBUSIND);
+ ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
+ ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
+ ULPI_FC_SUSPENDM);
+ ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
+
+ /* Set VBus */
+ ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
+ ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
+
+ return 0;
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the the EHCI host controller.
+ */
+int ehci_hcd_stop(int index)
+{
+ struct usb_ehci *ehci;
+
+ if (!index)
+ ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR0;
+ else
+ ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR1;
+
+ /* Stop controller */
+ writel(ZYNQ_USB_USBCMD_STOP, &ehci->usbcmd);
+ udelay(1000);
+
+ /* Initiate controller reset */
+ writel(ZYNQ_USB_USBCMD_RST, &ehci->usbcmd);
+
+ return 0;
+}
--
1.8.2.3
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