Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965659Ab3GSMe6 (ORCPT ); Fri, 19 Jul 2013 08:34:58 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:48934 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760254Ab3GSMe4 (ORCPT ); Fri, 19 Jul 2013 08:34:56 -0400 From: George Cherian To: CC: , , , , , , George Cherian Subject: [PATCH v2 1/4] usb: phy: phy-omap-control: Add API to power and wakeup Date: Fri, 19 Jul 2013 18:04:34 +0530 Message-ID: <1374237277-17769-2-git-send-email-george.cherian@ti.com> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1374237277-17769-1-git-send-email-george.cherian@ti.com> References: <1374237277-17769-1-git-send-email-george.cherian@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4845 Lines: 153 on/off USB PHY for AM335X Add APIs to -power on/off USB PHY for AM335X -enable/disable PHY wakeup. This API will be called from phy-amxxxx-usb driver. Signed-off-by: George Cherian --- drivers/usb/phy/phy-omap-control.c | 67 ++++++++++++++++++++++++++++++++++++ include/linux/usb/omap_control_usb.h | 24 +++++++++++++ 2 files changed, 91 insertions(+) diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c index 1419ced..4f2502c 100644 --- a/drivers/usb/phy/phy-omap-control.c +++ b/drivers/usb/phy/phy-omap-control.c @@ -46,6 +46,73 @@ struct device *omap_get_control_dev(void) EXPORT_SYMBOL_GPL(omap_get_control_dev); /** + * omap_control_am335x_phy_wkup - PHY wakeup on/off using control + * module + * @dev: the control module device + * @on: 0 to off and 1 to on PHY wakeup feature + * @id: phy id 0 or 1 for phy instance 0 and 1 repectively + * + * AMXXXX PHY driver should call this API to enable or disable PHY wakeup. + */ +void omap_control_am335x_phy_wkup(struct device *dev, bool on, u8 id) +{ + u32 val; + u32 *phy_wkup_reg; + struct omap_control_usb *control_usb = dev_get_drvdata(dev); + + if (control_usb->type != OMAP_CTRL_DEV_TYPE3 || id < 0 || id > 1) + return; + + phy_wkup_reg = control_usb->dev_conf + AM335X_USB_WKUP_OFFSET; + val = readl(phy_wkup_reg); + + if (on) + val |= id ? AM335X_USB1_WKUP_CTRL_ENABLE : + AM335X_USB0_WKUP_CTRL_ENABLE; + else + val &= id ? ~AM335X_USB1_WKUP_CTRL_ENABLE : + ~AM335X_USB0_WKUP_CTRL_ENABLE; + + + writel(val, phy_wkup_reg); +} +EXPORT_SYMBOL_GPL(omap_control_am335x_phy_wkup); + +/** + * omap_control_am335x_phy_power - power on/off the serializer using control + * module + * @dev: the control module device + * @on: 0 to off and 1 to on based on powering on or off the PHY + * @id: phy id 0 or 1 for phy instance 0 and 1 repectively + * + * AMXXXX PHY driver should call this API to power on or off the PHY. + */ +void omap_control_am335x_phy_power(struct device *dev, bool on, u8 id) +{ + u32 val; + u32 *phy_pwr_reg; + struct omap_control_usb *control_usb = dev_get_drvdata(dev); + + if (control_usb->type != OMAP_CTRL_DEV_TYPE3 || id < 0 || id > 1) + return; + + phy_pwr_reg = GET_PHY_POWER_REG(control_usb->dev_conf, id); + val = readl(phy_pwr_reg); + + if (on) { + val &= ~(AM335X_USBPHY_CM_PWRDN | AM335X_USBPHY_OTG_PWRDN); + val |= AM335X_USBPHY_OTGVDET_EN | + AM335X_USBPHY_OTGSESSEND_EN; + } else + val |= AM335X_USBPHY_CM_PWRDN | AM335X_USBPHY_OTG_PWRDN; + + + writel(val, phy_pwr_reg); +} +EXPORT_SYMBOL_GPL(omap_control_am335x_phy_power); + + +/** * omap_control_usb3_phy_power - power on/off the serializer using control * module * @dev: the control module device diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h index 27b5b8c..a92b417 100644 --- a/include/linux/usb/omap_control_usb.h +++ b/include/linux/usb/omap_control_usb.h @@ -45,6 +45,7 @@ enum omap_control_usb_mode { /* To differentiate ctrl module IP having either mailbox or USB3 PHY power */ #define OMAP_CTRL_DEV_TYPE1 0x1 #define OMAP_CTRL_DEV_TYPE2 0x2 +#define OMAP_CTRL_DEV_TYPE3 0x3 #define OMAP_CTRL_DEV_PHY_PD BIT(0) @@ -63,10 +64,23 @@ enum omap_control_usb_mode { #define OMAP_CTRL_USB3_PHY_TX_RX_POWERON 0x3 #define OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF 0x0 +#define GET_PHY_POWER_REG(base, id) ((u32 *)base + (id * 2)) +#define AM335X_USBPHY_CM_PWRDN (1 << 0) +#define AM335X_USBPHY_OTG_PWRDN (1 << 1) +#define AM335X_USBPHY_OTGVDET_EN (1 << 19) +#define AM335X_USBPHY_OTGSESSEND_EN (1 << 20) +#define AM335X_USB_WKUP_OFFSET 0xA +#define AM335X_USB0_WKUP_CTRL_ENABLE (1 << 0) +#define AM335X_USB1_WKUP_CTRL_ENABLE (1 << 8) + + + #if IS_ENABLED(CONFIG_OMAP_CONTROL_USB) extern struct device *omap_get_control_dev(void); extern void omap_control_usb_phy_power(struct device *dev, int on); extern void omap_control_usb3_phy_power(struct device *dev, bool on); +extern void omap_control_am335x_phy_power(struct device *dev, bool on, u8 id); +extern void omap_control_am335x_phy_wkup(struct device *dev, bool on, u8 id); extern void omap_control_usb_set_mode(struct device *dev, enum omap_control_usb_mode mode); #else @@ -87,6 +101,16 @@ static inline void omap_control_usb_set_mode(struct device *dev, enum omap_control_usb_mode mode) { } + +static inline void omap_control_am335x_phy_power(struct device *dev, + bool on, u8 id) +{ +} + +static inline void omap_control_am335x_phy_wkup(struct device *dev, + bool on, u8 id) +{ +} #endif #endif /* __OMAP_CONTROL_USB_H__ */ -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/