[PATCH 5/7] usb: phy: tegra: get ULPI reset GPIO info using DT.

[Venu Byravarasu]

As GPIO information is avail through DT, used it to get Tegra ULPI
reset GPIO number. Added a new member to tegra_usb_phy structure to
store this number.

Signed-off-by: Venu Byravarasu <vbyravar...@nvidia.com>
---
 drivers/usb/phy/tegra_usb_phy.c   |   25 +++++++++++--------------
 include/linux/usb/tegra_usb_phy.h |    1 +
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/drivers/usb/phy/tegra_usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c
index b5b2037..29c5ac4 100644
--- a/drivers/usb/phy/tegra_usb_phy.c
+++ b/drivers/usb/phy/tegra_usb_phy.c
@@ -541,11 +541,10 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy)
        int ret;
        unsigned long val;
        void __iomem *base = phy->regs;
-       struct tegra_ulpi_config *config = phy->config;
 
-       gpio_direction_output(config->reset_gpio, 0);
+       gpio_direction_output(phy->reset_gpio, 0);
        msleep(5);
-       gpio_direction_output(config->reset_gpio, 1);
+       gpio_direction_output(phy->reset_gpio, 1);
 
        clk_prepare_enable(phy->clk);
        msleep(1);
@@ -603,10 +602,8 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy)
 
 static int ulpi_phy_power_off(struct tegra_usb_phy *phy)
 {
-       struct tegra_ulpi_config *config = phy->config;
-
        clk_disable(phy->clk);
-       return gpio_direction_output(config->reset_gpio, 0);
+       return gpio_direction_output(phy->reset_gpio, 0);
 }
 
 static int     tegra_phy_init(struct usb_phy *x)
@@ -622,18 +619,18 @@ static int        tegra_phy_init(struct usb_phy *x)
                        pr_err("%s: can't get ulpi clock\n", __func__);
                        return PTR_ERR(phy->clk);
                }
-               if (!gpio_is_valid(ulpi_config->reset_gpio))
-                       ulpi_config->reset_gpio =
-                               of_get_named_gpio(phy->dev->of_node,
-                                                 "nvidia,phy-reset-gpio", 0);
-               if (!gpio_is_valid(ulpi_config->reset_gpio)) {
+
+               phy->reset_gpio =
+                       of_get_named_gpio(phy->dev->of_node,
+                                         "nvidia,phy-reset-gpio", 0);
+               if (!gpio_is_valid(phy->reset_gpio)) {
                        pr_err("%s: invalid reset gpio: %d\n", __func__,
-                              ulpi_config->reset_gpio);
+                              phy->reset_gpio);
                        err = -EINVAL;
                        goto err1;
                }
-               gpio_request(ulpi_config->reset_gpio, "ulpi_phy_reset_b");
-               gpio_direction_output(ulpi_config->reset_gpio, 0);
+               gpio_request(phy->reset_gpio, "ulpi_phy_reset_b");
+               gpio_direction_output(phy->reset_gpio, 0);
                phy->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, 0);
                phy->ulpi->io_priv = phy->regs + ULPI_VIEWPORT;
        } else {
diff --git a/include/linux/usb/tegra_usb_phy.h 
b/include/linux/usb/tegra_usb_phy.h
index a7af923..6cfb8f1 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -62,6 +62,7 @@ struct tegra_usb_phy {
        struct device *dev;
        bool is_legacy_phy;
        bool is_ulpi_phy;
+       int reset_gpio;
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-- 
1.7.0.4

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