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usb: phy: mxs: Add platform judgement code 

The mxs-phy has several bugs and features at different
versions, the driver code can get it through of_device_id.data.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Peter Chen 2014-02-24 10:20:54 +08:00 committed by Felipe Balbi
parent 14de8c3a62
commit 2400780ea1
1 changed files with 49 additions and 9 deletions
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58
drivers/usb/phy/phy-mxs-usb.c
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@ -1,5 +1,5 @@
/*
* Copyright 2012 Freescale Semiconductor, Inc.
* Copyright 2012-2013 Freescale Semiconductor, Inc.
* Copyright (C) 2012 Marek Vasut <marex@denx.de>
* on behalf of DENX Software Engineering GmbH
*
@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of_device.h>
#define DRIVER_NAME "mxs_phy"
@ -34,13 +35,55 @@
#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
/* Do disconnection between PHY and controller without vbus */
#define MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS BIT(0)
/*
* The PHY will be in messy if there is a wakeup after putting
* bus to suspend (set portsc.suspendM) but before setting PHY to low
* power mode (set portsc.phcd).
*/
#define MXS_PHY_ABNORMAL_IN_SUSPEND BIT(1)
/*
* The SOF sends too fast after resuming, it will cause disconnection
* between host and high speed device.
*/
#define MXS_PHY_SENDING_SOF_TOO_FAST BIT(2)
struct mxs_phy_data {
unsigned int flags;
};
static const struct mxs_phy_data imx23_phy_data = {
.flags = MXS_PHY_ABNORMAL_IN_SUSPEND | MXS_PHY_SENDING_SOF_TOO_FAST,
};
static const struct mxs_phy_data imx6q_phy_data = {
.flags = MXS_PHY_SENDING_SOF_TOO_FAST |
MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS,
};
static const struct mxs_phy_data imx6sl_phy_data = {
.flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS,
};
static const struct of_device_id mxs_phy_dt_ids[] = {
{ .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
{ .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
{ .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
struct mxs_phy {
struct usb_phy phy;
struct clk *clk;
const struct mxs_phy_data *data;
};
#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
{
int ret;
@ -138,6 +181,8 @@ static int mxs_phy_probe(struct platform_device *pdev)
struct clk *clk;
struct mxs_phy *mxs_phy;
int ret;
const struct of_device_id *of_id =
of_match_device(mxs_phy_dt_ids, &pdev->dev);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
@ -168,6 +213,7 @@ static int mxs_phy_probe(struct platform_device *pdev)
mxs_phy->phy.type = USB_PHY_TYPE_USB2;
mxs_phy->clk = clk;
mxs_phy->data = of_id->data;
platform_set_drvdata(pdev, mxs_phy);
@ -187,12 +233,6 @@ static int mxs_phy_remove(struct platform_device *pdev)
return 0;
}
static const struct of_device_id mxs_phy_dt_ids[] = {
{ .compatible = "fsl,imx23-usbphy", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
static struct platform_driver mxs_phy_driver = {
.probe = mxs_phy_probe,
.remove = mxs_phy_remove,