[U-Boot] [PATCH v2 3/4] usb: gadget: bcm_udc_otg files

Steve Rae
2015-07-06T19:49:40Z

From: "JD (Jiandong) Zheng" <jdzheng@broadcom.com>

Add the required files for the Broadcom UDC OTG interface.

Signed-off-by: Steve Rae <srae@broadcom.com>
---

Changes in v2: None

arch/arm/include/asm/arch-bcm281xx/sysmap.h | 7 ++++
drivers/usb/gadget/bcm_udc_otg.h | 17 ++++++++++
drivers/usb/gadget/bcm_udc_otg_phy.c | 50 +++++++++++++++++++++++++++++
3 files changed, 74 insertions(+)
create mode 100644 drivers/usb/gadget/bcm_udc_otg.h
create mode 100644 drivers/usb/gadget/bcm_udc_otg_phy.c

diff --git a/arch/arm/include/asm/arch-bcm281xx/sysmap.h b/arch/arm/include/asm/arch-bcm281xx/sysmap.h
index 93ebf34..dbcc88c 100644
--- a/arch/arm/include/asm/arch-bcm281xx/sysmap.h
+++ b/arch/arm/include/asm/arch-bcm281xx/sysmap.h
@@ -27,4 +27,11 @@
#define SECWD2_BASE_ADDR 0x35002f40
#define TIMER_BASE_ADDR 0x3e00d000

+#define HSOTG_DCTL_OFFSET 0x00000804
+#define HSOTG_DCTL_SFTDISCON_MASK 0x00000002
+
+#define HSOTG_CTRL_PHY_P1CTL_OFFSET 0x00000008
+#define HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK 0x00000002
+#define HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK 0x00000001
+
#endif
diff --git a/drivers/usb/gadget/bcm_udc_otg.h b/drivers/usb/gadget/bcm_udc_otg.h
new file mode 100644
index 0000000..81a1fc0
--- /dev/null
+++ b/drivers/usb/gadget/bcm_udc_otg.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2015 Broadcom Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __BCM_UDC_OTG_H
+#define __BCM_UDC_OTG_H
+
+#include <linux/types.h>
+
+#define wfld_set(addr, fld_val, fld_mask) \
+ (writel(((readl(addr) & ~(fld_mask)) | (fld_val)), (addr)))
+#define wfld_clear(addr, fld_mask) \
+ (writel((readl(addr) & ~(fld_mask)), (addr)))
+
+#endif
diff --git a/drivers/usb/gadget/bcm_udc_otg_phy.c b/drivers/usb/gadget/bcm_udc_otg_phy.c
new file mode 100644
index 0000000..1aa9f91
--- /dev/null
+++ b/drivers/usb/gadget/bcm_udc_otg_phy.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015 Broadcom Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sysmap.h>
+
+#include <usb/s3c_udc.h>
+#include "bcm_udc_otg.h"
+
+void otg_phy_init(struct s3c_udc *dev)
+{
+ /* set Phy to driving mode */
+ wfld_clear(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
+ HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK);
+
+ udelay(100);
+
+ /* clear Soft Disconnect */
+ wfld_clear(HSOTG_BASE_ADDR + HSOTG_DCTL_OFFSET,
+ HSOTG_DCTL_SFTDISCON_MASK);
+
+ /* invoke Reset (active low) */
+ wfld_clear(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
+ HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK);
+
+ udelay(10000);
+
+ /* release Reset */
+ wfld_set(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
+ HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK,
+ HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK);
+}
+
+void otg_phy_off(struct s3c_udc *dev)
+{
+ /* Soft Disconnect */
+ wfld_set(HSOTG_BASE_ADDR + HSOTG_DCTL_OFFSET,
+ HSOTG_DCTL_SFTDISCON_MASK,
+ HSOTG_DCTL_SFTDISCON_MASK);
+
+ /* set Phy to non-driving (reset) mode */
+ wfld_set(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
+ HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK,
+ HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK);
+}
--
1.8.5