2d22b42db0
Registered Tegra USB PHY as a separate platform driver. To synchronize host controller and PHY initialization, used deferred probe mechanism. As PHY should be initialized before EHCI starts running, deferred probe of Tegra EHCI driver till PHY probe gets completed. Got rid of instance number based handling in host driver. Made use of DT params to get the PHY Pad registers. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/*
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* Copyright (C) 2010 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __TEGRA_USB_PHY_H
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#define __TEGRA_USB_PHY_H
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#include <linux/clk.h>
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#include <linux/usb/otg.h>
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struct tegra_utmip_config {
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u8 hssync_start_delay;
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u8 elastic_limit;
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u8 idle_wait_delay;
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u8 term_range_adj;
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u8 xcvr_setup;
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u8 xcvr_lsfslew;
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u8 xcvr_lsrslew;
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};
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struct tegra_ulpi_config {
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int reset_gpio;
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const char *clk;
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};
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enum tegra_usb_phy_port_speed {
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TEGRA_USB_PHY_PORT_SPEED_FULL = 0,
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TEGRA_USB_PHY_PORT_SPEED_LOW,
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TEGRA_USB_PHY_PORT_SPEED_HIGH,
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};
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enum tegra_usb_phy_mode {
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TEGRA_USB_PHY_MODE_DEVICE,
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TEGRA_USB_PHY_MODE_HOST,
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TEGRA_USB_PHY_MODE_OTG,
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};
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struct tegra_xtal_freq;
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struct tegra_usb_phy {
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int instance;
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const struct tegra_xtal_freq *freq;
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void __iomem *regs;
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void __iomem *pad_regs;
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struct clk *clk;
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struct clk *pll_u;
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struct clk *pad_clk;
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enum tegra_usb_phy_mode mode;
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void *config;
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struct usb_phy *ulpi;
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struct usb_phy u_phy;
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struct device *dev;
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bool is_legacy_phy;
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bool is_ulpi_phy;
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int reset_gpio;
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};
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struct usb_phy *tegra_usb_get_phy(struct device_node *dn);
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void tegra_usb_phy_preresume(struct usb_phy *phy);
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void tegra_usb_phy_postresume(struct usb_phy *phy);
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void tegra_ehci_phy_restore_start(struct usb_phy *phy,
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enum tegra_usb_phy_port_speed port_speed);
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void tegra_ehci_phy_restore_end(struct usb_phy *phy);
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void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val);
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void tegra_ehci_set_phcd(struct usb_phy *x, bool enable);
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#endif /* __TEGRA_USB_PHY_H */
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