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authorPavankumar Kondeti <pkondeti@codeaurora.org>2010-12-07 17:53:55 +0530
committerGreg Kroah-Hartman <gregkh@suse.de>2010-12-10 14:23:31 -0800
commite0c201f339fe7fc38d1b0f6f4755ff627686c7e0 (patch)
treea8245f60d4e0c0e22901a15a655af45eaf17325d /include/linux/usb
parent05570297ecbe834b1756b522412b68eaffb9ab11 (diff)
downloadop-kernel-dev-e0c201f339fe7fc38d1b0f6f4755ff627686c7e0.zip
op-kernel-dev-e0c201f339fe7fc38d1b0f6f4755ff627686c7e0.tar.gz
USB: Add MSM OTG Controller driver
This driver implements PHY initialization, clock management, ULPI IO ops and simple OTG state machine to kick host/peripheral based on Id/VBUS line status. VBUS/Id lines are tied to a reference voltage on some boards. Hence provide debugfs interface to select host/peripheral mode. Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb')
-rw-r--r--include/linux/usb/msm_hsusb.h108
-rw-r--r--include/linux/usb/msm_hsusb_hw.h56
2 files changed, 164 insertions, 0 deletions
diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h
new file mode 100644
index 0000000..b796df9
--- /dev/null
+++ b/include/linux/usb/msm_hsusb.h
@@ -0,0 +1,108 @@
+/* linux/include/asm-arm/arch-msm/hsusb.h
+ *
+ * Copyright (C) 2008 Google, Inc.
+ * Author: Brian Swetland <swetland@google.com>
+ * Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __ASM_ARCH_MSM_HSUSB_H
+#define __ASM_ARCH_MSM_HSUSB_H
+
+#include <linux/types.h>
+#include <linux/usb/otg.h>
+
+/**
+ * Supported USB modes
+ *
+ * USB_PERIPHERAL Only peripheral mode is supported.
+ * USB_HOST Only host mode is supported.
+ * USB_OTG OTG mode is supported.
+ *
+ */
+enum usb_mode_type {
+ USB_NONE = 0,
+ USB_PERIPHERAL,
+ USB_HOST,
+ USB_OTG,
+};
+
+/**
+ * OTG control
+ *
+ * OTG_NO_CONTROL Id/VBUS notifications not required. Useful in host
+ * only configuration.
+ * OTG_PHY_CONTROL Id/VBUS notifications comes form USB PHY.
+ * OTG_PMIC_CONTROL Id/VBUS notifications comes from PMIC hardware.
+ * OTG_USER_CONTROL Id/VBUS notifcations comes from User via sysfs.
+ *
+ */
+enum otg_control_type {
+ OTG_NO_CONTROL = 0,
+ OTG_PHY_CONTROL,
+ OTG_PMIC_CONTROL,
+ OTG_USER_CONTROL,
+};
+
+/**
+ * struct msm_otg_platform_data - platform device data
+ * for msm72k_otg driver.
+ * @phy_init_seq: PHY configuration sequence. val, reg pairs
+ * terminated by -1.
+ * @vbus_power: VBUS power on/off routine.
+ * @power_budget: VBUS power budget in mA (0 will be treated as 500mA).
+ * @mode: Supported mode (OTG/peripheral/host).
+ * @otg_control: OTG switch controlled by user/Id pin
+ * @default_mode: Default operational mode. Applicable only if
+ * OTG switch is controller by user.
+ *
+ */
+struct msm_otg_platform_data {
+ int *phy_init_seq;
+ void (*vbus_power)(bool on);
+ unsigned power_budget;
+ enum usb_mode_type mode;
+ enum otg_control_type otg_control;
+ enum usb_mode_type default_mode;
+ void (*setup_gpio)(enum usb_otg_state state);
+};
+
+/**
+ * struct msm_otg: OTG driver data. Shared by HCD and DCD.
+ * @otg: USB OTG Transceiver structure.
+ * @pdata: otg device platform data.
+ * @irq: IRQ number assigned for HSUSB controller.
+ * @clk: clock struct of usb_hs_clk.
+ * @pclk: clock struct of usb_hs_pclk.
+ * @phy_reset_clk: clock struct of usb_phy_clk.
+ * @core_clk: clock struct of usb_hs_core_clk.
+ * @regs: ioremapped register base address.
+ * @inputs: OTG state machine inputs(Id, SessValid etc).
+ * @sm_work: OTG state machine work.
+ *
+ */
+struct msm_otg {
+ struct otg_transceiver otg;
+ struct msm_otg_platform_data *pdata;
+ int irq;
+ struct clk *clk;
+ struct clk *pclk;
+ struct clk *phy_reset_clk;
+ struct clk *core_clk;
+ void __iomem *regs;
+#define ID 0
+#define B_SESS_VLD 1
+ unsigned long inputs;
+ struct work_struct sm_work;
+};
+
+#endif
diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h
new file mode 100644
index 0000000..b061cff
--- /dev/null
+++ b/include/linux/usb/msm_hsusb_hw.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Author: Brian Swetland <swetland@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __LINUX_USB_GADGET_MSM72K_UDC_H__
+#define __LINUX_USB_GADGET_MSM72K_UDC_H__
+
+#ifdef CONFIG_ARCH_MSM7X00A
+#define USB_SBUSCFG (MSM_USB_BASE + 0x0090)
+#else
+#define USB_AHBBURST (MSM_USB_BASE + 0x0090)
+#define USB_AHBMODE (MSM_USB_BASE + 0x0098)
+#endif
+#define USB_CAPLENGTH (MSM_USB_BASE + 0x0100) /* 8 bit */
+
+#define USB_USBCMD (MSM_USB_BASE + 0x0140)
+#define USB_PORTSC (MSM_USB_BASE + 0x0184)
+#define USB_OTGSC (MSM_USB_BASE + 0x01A4)
+#define USB_USBMODE (MSM_USB_BASE + 0x01A8)
+
+#define USBCMD_RESET 2
+#define USB_USBINTR (MSM_USB_BASE + 0x0148)
+
+#define PORTSC_PHCD (1 << 23) /* phy suspend mode */
+#define PORTSC_PTS_MASK (3 << 30)
+#define PORTSC_PTS_ULPI (3 << 30)
+
+#define USB_ULPI_VIEWPORT (MSM_USB_BASE + 0x0170)
+#define ULPI_RUN (1 << 30)
+#define ULPI_WRITE (1 << 29)
+#define ULPI_READ (0 << 29)
+#define ULPI_ADDR(n) (((n) & 255) << 16)
+#define ULPI_DATA(n) ((n) & 255)
+#define ULPI_DATA_READ(n) (((n) >> 8) & 255)
+
+/* OTG definitions */
+#define OTGSC_INTSTS_MASK (0x7f << 16)
+#define OTGSC_ID (1 << 8)
+#define OTGSC_BSV (1 << 11)
+#define OTGSC_IDIS (1 << 16)
+#define OTGSC_BSVIS (1 << 19)
+#define OTGSC_IDIE (1 << 24)
+#define OTGSC_BSVIE (1 << 27)
+
+#endif /* __LINUX_USB_GADGET_MSM72K_UDC_H__ */
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