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USB: PHY: tegra: get rid of instance number to differentiate legacy controller 

Tegra20 USB has 3 PHY instances. Instance 0 is based on
legacy PHY interface and other two are standard interfaces.

As instance number was used to differentiate legacy from
standard interfaces, used DT param to get this info and
processed accordingly.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Venu Byravarasu 2013-01-16 03:30:20 +00:00 committed by Stephen Warren
parent 540fc9d971
commit 3a55c6a8b9
2 changed files with 16 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/usb/phy/tegra_usb_phy.c
View File

@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
@ -221,7 +222,7 @@ static int utmip_pad_open(struct tegra_usb_phy *phy)
return PTR_ERR(phy->pad_clk);
}
if (phy->instance == 0) {
if (phy->is_legacy_phy) {
phy->pad_regs = phy->regs;
} else {
phy->pad_regs = ioremap(TEGRA_USB_BASE, TEGRA_USB_SIZE);
@ -236,7 +237,7 @@ static int utmip_pad_open(struct tegra_usb_phy *phy)
static void utmip_pad_close(struct tegra_usb_phy *phy)
{
if (phy->instance != 0)
if (!phy->is_legacy_phy)
iounmap(phy->pad_regs);
clk_put(phy->pad_clk);
}
@ -305,7 +306,7 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy)
unsigned long val;
void __iomem *base = phy->regs;
if (phy->instance == 0) {
if (phy->is_legacy_phy) {
val = readl(base + USB_SUSP_CTRL);
val |= USB_SUSP_SET;
writel(val, base + USB_SUSP_CTRL);
@ -315,9 +316,7 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy)
val = readl(base + USB_SUSP_CTRL);
val &= ~USB_SUSP_SET;
writel(val, base + USB_SUSP_CTRL);
}
if (phy->instance == 2) {
} else {
val = readl(base + USB_PORTSC1);
val |= USB_PORTSC1_PHCD;
writel(val, base + USB_PORTSC1);
@ -332,7 +331,7 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy)
unsigned long val;
void __iomem *base = phy->regs;
if (phy->instance == 0) {
if (phy->is_legacy_phy) {
val = readl(base + USB_SUSP_CTRL);
val |= USB_SUSP_CLR;
writel(val, base + USB_SUSP_CTRL);
@ -342,9 +341,7 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy)
val = readl(base + USB_SUSP_CTRL);
val &= ~USB_SUSP_CLR;
writel(val, base + USB_SUSP_CTRL);
}
if (phy->instance == 2) {
} else {
val = readl(base + USB_PORTSC1);
val &= ~USB_PORTSC1_PHCD;
writel(val, base + USB_PORTSC1);
@ -365,7 +362,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
val |= UTMIP_RESET;
writel(val, base + USB_SUSP_CTRL);
if (phy->instance == 0) {
if (phy->is_legacy_phy) {
val = readl(base + USB1_LEGACY_CTRL);
val |= USB1_NO_LEGACY_MODE;
writel(val, base + USB1_LEGACY_CTRL);
@ -440,16 +437,14 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
val |= UTMIP_BIAS_PDTRK_COUNT(0x5);
writel(val, base + UTMIP_BIAS_CFG1);
if (phy->instance == 0) {
if (phy->is_legacy_phy) {
val = readl(base + UTMIP_SPARE_CFG0);
if (phy->mode == TEGRA_USB_PHY_MODE_DEVICE)
val &= ~FUSE_SETUP_SEL;
else
val |= FUSE_SETUP_SEL;
writel(val, base + UTMIP_SPARE_CFG0);
}
if (phy->instance == 2) {
} else {
val = readl(base + USB_SUSP_CTRL);
val |= UTMIP_PHY_ENABLE;
writel(val, base + USB_SUSP_CTRL);
@ -459,7 +454,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
val &= ~UTMIP_RESET;
writel(val, base + USB_SUSP_CTRL);
if (phy->instance == 0) {
if (phy->is_legacy_phy) {
val = readl(base + USB1_LEGACY_CTRL);
val &= ~USB1_VBUS_SENSE_CTL_MASK;
val |= USB1_VBUS_SENSE_CTL_A_SESS_VLD;
@ -472,7 +467,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
utmi_phy_clk_enable(phy);
if (phy->instance == 2) {
if (!phy->is_legacy_phy) {
val = readl(base + USB_PORTSC1);
val &= ~USB_PORTSC1_PTS(~0);
writel(val, base + USB_PORTSC1);
@ -739,6 +734,7 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
unsigned long parent_rate;
int i;
int err;
struct device_node *np = dev->of_node;
phy = kzalloc(sizeof(struct tegra_usb_phy), GFP_KERNEL);
if (!phy)
@ -749,6 +745,8 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
phy->config = config;
phy->mode = phy_mode;
phy->dev = dev;
phy->is_legacy_phy =
of_property_read_bool(np, "nvidia,has-legacy-mode");
if (!phy->config) {
if (phy_is_ulpi(phy)) {

1
include/linux/usb/tegra_usb_phy.h
View File

@ -59,6 +59,7 @@ struct tegra_usb_phy {
struct usb_phy *ulpi;
struct usb_phy u_phy;
struct device *dev;
bool is_legacy_phy;
};
struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,