usb: phy: ab8500-usb: add regulator support

Add initial regulator support to ab8500-usb by introducing necessary
devm_regulator_get().

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index 441b2954cffd8e617037f8ea773b8e43c992bca3..1bc24d4c25e73bcabd214bb829dbdb16712f28cf 100644 (file)
--- a/drivers/usb/phy/phy-ab8500-usb.c
+++ b/drivers/usb/phy/phy-ab8500-usb.c
@@ -32,6 +32,7 @@
 #include <linux/mfd/abx500.h>
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/usb/musb-ux500.h>
+#include <linux/regulator/consumer.h>
 
 /* Bank AB8500_SYS_CTRL2_BLOCK */
 #define AB8500_MAIN_WD_CTRL_REG 0x01
@@ -126,6 +127,9 @@ struct ab8500_usb {
        struct work_struct phy_dis_work;
        unsigned long link_status_wait;
        enum ab8500_usb_mode mode;
+       struct regulator *v_ape;
+       struct regulator *v_musb;
+       struct regulator *v_ulpi;
        int previous_link_status_state;
 };
 
@@ -590,6 +594,34 @@ static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
        return 0;
 }
 
+static int ab8500_usb_regulator_get(struct ab8500_usb *ab)
+{
+       int err;
+
+       ab->v_ape = devm_regulator_get(ab->dev, "v-ape");
+       if (IS_ERR(ab->v_ape)) {
+               dev_err(ab->dev, "Could not get v-ape supply\n");
+               err = PTR_ERR(ab->v_ape);
+               return err;
+       }
+
+       ab->v_ulpi = devm_regulator_get(ab->dev, "vddulpivio18");
+       if (IS_ERR(ab->v_ulpi)) {
+               dev_err(ab->dev, "Could not get vddulpivio18 supply\n");
+               err = PTR_ERR(ab->v_ulpi);
+               return err;
+       }
+
+       ab->v_musb = devm_regulator_get(ab->dev, "musb_1v8");
+       if (IS_ERR(ab->v_musb)) {
+               dev_err(ab->dev, "Could not get musb_1v8 supply\n");
+               err = PTR_ERR(ab->v_musb);
+               return err;
+       }
+
+       return 0;
+}
+
 static int ab8500_usb_irq_setup(struct platform_device *pdev,
                struct ab8500_usb *ab)
 {
@@ -687,6 +719,10 @@ static int ab8500_usb_probe(struct platform_device *pdev)
        /* all: Disable phy when called from set_host and set_peripheral */
        INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work);
 
+       err = ab8500_usb_regulator_get(ab);
+       if (err)
+               return err;
+
        err = ab8500_usb_irq_setup(pdev, ab);
        if (err < 0)
                return err;