summaryrefslogtreecommitdiffstats
path: root/drivers/usb
diff options
context:
space:
mode:
authorVenu Byravarasu <vbyravarasu@nvidia.com>2013-01-16 03:30:20 +0000
committerStephen Warren <swarren@nvidia.com>2013-01-28 11:20:05 -0700
commit3a55c6a8b96f055783a1b9d5497f66b56a9ea0d7 (patch)
treeb0561c09cad4137bedb7b2626a60422462f50999 /drivers/usb
parent540fc9d971a6b38339dfcccb5364640b907ae423 (diff)
downloadop-kernel-dev-3a55c6a8b96f055783a1b9d5497f66b56a9ea0d7.zip
op-kernel-dev-3a55c6a8b96f055783a1b9d5497f66b56a9ea0d7.tar.gz
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/phy/tegra_usb_phy.c32
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/usb/phy/tegra_usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c
index 3059384..79280fe 100644
--- a/drivers/usb/phy/tegra_usb_phy.c
+++ b/drivers/usb/phy/tegra_usb_phy.c
@@ -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)) {
OpenPOWER on IntegriCloud