usb: mtu3: add helper to power on/down device
Add helper to power on/down device ports and ip, it will be used when support device suspend/resume Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1626340078-29111-12-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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6244831543
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@ -141,6 +141,28 @@ static void mtu3_device_disable(struct mtu3 *mtu)
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mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
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}
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static void mtu3_dev_power_on(struct mtu3 *mtu)
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{
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void __iomem *ibase = mtu->ippc_base;
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mtu3_clrbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
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if (mtu->is_u3_ip)
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mtu3_clrbits(ibase, SSUSB_U3_CTRL(0), SSUSB_U3_PORT_PDN);
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mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_PDN);
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}
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static void mtu3_dev_power_down(struct mtu3 *mtu)
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{
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void __iomem *ibase = mtu->ippc_base;
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if (mtu->is_u3_ip)
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mtu3_setbits(ibase, SSUSB_U3_CTRL(0), SSUSB_U3_PORT_PDN);
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mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_PDN);
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mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
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}
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/* reset U3D's device module. */
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static void mtu3_device_reset(struct mtu3 *mtu)
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{
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@ -333,12 +355,7 @@ void mtu3_start(struct mtu3 *mtu)
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dev_dbg(mtu->dev, "%s devctl 0x%x\n", __func__,
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mtu3_readl(mbase, U3D_DEVICE_CONTROL));
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mtu3_clrbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
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if (mtu->is_u3_ip)
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mtu3_clrbits(mtu->ippc_base, SSUSB_U3_CTRL(0), SSUSB_U3_PORT_PDN);
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mtu3_clrbits(mtu->ippc_base, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_PDN);
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mtu3_dev_power_on(mtu);
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mtu3_csr_init(mtu);
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mtu3_set_speed(mtu, mtu->speed);
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@ -360,12 +377,7 @@ void mtu3_stop(struct mtu3 *mtu)
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mtu3_dev_on_off(mtu, 0);
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mtu->is_active = 0;
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if (mtu->is_u3_ip)
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mtu3_setbits(mtu->ippc_base, SSUSB_U3_CTRL(0), SSUSB_U3_PORT_PDN);
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mtu3_setbits(mtu->ippc_base, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_PDN);
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mtu3_setbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
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mtu3_dev_power_down(mtu);
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}
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/* for non-ep0 */
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