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usb: ehci-orion: add more constants for register values
This commit adds new register values for the USB_CMD and USB_MODE registers, which allows to avoid the usage of a number of magic values in orion_usb_phy_v1_setup(). Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -29,7 +29,13 @@
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#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
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#define USB_CMD 0x140
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#define USB_CMD_RUN BIT(0)
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#define USB_CMD_RESET BIT(1)
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#define USB_MODE 0x1a8
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#define USB_MODE_MASK GENMASK(1, 0)
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#define USB_MODE_DEVICE 0x2
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#define USB_MODE_HOST 0x3
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#define USB_MODE_SDIS BIT(4)
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#define USB_CAUSE 0x310
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#define USB_MASK 0x314
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#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
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@ -69,8 +75,8 @@ static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
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/*
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* Reset controller
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*/
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wrl(USB_CMD, rdl(USB_CMD) | 0x2);
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while (rdl(USB_CMD) & 0x2);
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wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
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while (rdl(USB_CMD) & USB_CMD_RESET);
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/*
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* GL# USB-10: Set IPG for non start of frame packets
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@ -112,16 +118,16 @@ static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
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/*
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* Stop and reset controller
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*/
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wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
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wrl(USB_CMD, rdl(USB_CMD) | 0x2);
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while (rdl(USB_CMD) & 0x2);
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wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
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wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
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while (rdl(USB_CMD) & USB_CMD_RESET);
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/*
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* GL# USB-5 Streaming disable REG_USB_MODE[4]=1
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* TBD: This need to be done after each reset!
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* GL# USB-4 Setup USB Host mode
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*/
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wrl(USB_MODE, 0x13);
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wrl(USB_MODE, USB_MODE_SDIS | USB_MODE_HOST);
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}
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static void
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