usb: otg: ab8500-usb: drop support for ab8500 pre v2.0

AB8500 versions preceding 2.0 were only used internally by ST-Ericsson
and are not supported anymore.  This patch drops all v1.0 and v1.1
support code.

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>

1 files changed, 11 insertions, 128 deletions

diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index 2d86f26a0183..9f5e0e4ab02a 100644
--- a/drivers/usb/phy/phy-ab8500-usb.c
+++ b/drivers/usb/phy/phy-ab8500-usb.c
@@ -42,10 +42,8 @@
 #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0)
 #define AB8500_BIT_WD_CTRL_KICK (1 << 1)
 
-#define AB8500_V1x_LINK_STAT_WAIT (HZ/10)
 #define AB8500_WD_KICK_DELAY_US 100 /* usec */
 #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */
-#define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */
 
 /* Usb line status register */
 enum ab8500_usb_link_status {
@@ -70,16 +68,12 @@ enum ab8500_usb_link_status {
 struct ab8500_usb {
         struct usb_phy phy;
         struct device *dev;
-        int irq_num_id_rise;
-        int irq_num_id_fall;
-        int irq_num_vbus_rise;
-        int irq_num_vbus_fall;
+        struct ab8500 *ab8500;
         int irq_num_link_status;
         unsigned vbus_draw;
         struct delayed_work dwork;
         struct work_struct phy_dis_work;
         unsigned long link_status_wait;
-        int rev;
 };
 
 static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x)
@@ -102,10 +96,7 @@ static void ab8500_usb_wd_workaround(struct ab8500_usb *ab)
                 (AB8500_BIT_WD_CTRL_ENABLE
                 | AB8500_BIT_WD_CTRL_KICK));
 
-        if (ab->rev > 0x10) /* v1.1 v2.0 */
-                udelay(AB8500_WD_V11_DISABLE_DELAY_US);
-        else /* v1.0 */
-                msleep(AB8500_WD_V10_DISABLE_DELAY_MS);
+        udelay(AB8500_WD_V11_DISABLE_DELAY_US);
 
         abx500_set_register_interruptible(ab->dev,
                 AB8500_SYS_CTRL2_BLOCK,
@@ -225,29 +216,6 @@ static void ab8500_usb_delayed_work(struct work_struct *work)
         ab8500_usb_link_status_update(ab);
 }
 
-static irqreturn_t ab8500_usb_v1x_common_irq(int irq, void *data)
-{
-        struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
-        /* Wait for link status to become stable. */
-        schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-
-        return IRQ_HANDLED;
-}
-
-static irqreturn_t ab8500_usb_v1x_vbus_fall_irq(int irq, void *data)
-{
-        struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
-        /* Link status will not be updated till phy is disabled. */
-        ab8500_usb_peri_phy_dis(ab);
-
-        /* Wait for link status to become stable. */
-        schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-
-        return IRQ_HANDLED;
-}
-
 static irqreturn_t ab8500_usb_v20_irq(int irq, void *data)
 {
         struct ab8500_usb *ab = (struct ab8500_usb *) data;
@@ -361,86 +329,7 @@ static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
 
 static void ab8500_usb_irq_free(struct ab8500_usb *ab)
 {
-        if (ab->rev < 0x20) {
-                free_irq(ab->irq_num_id_rise, ab);
-                free_irq(ab->irq_num_id_fall, ab);
-                free_irq(ab->irq_num_vbus_rise, ab);
-                free_irq(ab->irq_num_vbus_fall, ab);
-        } else {
-                free_irq(ab->irq_num_link_status, ab);
-        }
-}
-
-static int ab8500_usb_v1x_res_setup(struct platform_device *pdev,
-                                struct ab8500_usb *ab)
-{
-        int err;
-
-        ab->irq_num_id_rise = platform_get_irq_byname(pdev, "ID_WAKEUP_R");
-        if (ab->irq_num_id_rise < 0) {
-                dev_err(&pdev->dev, "ID rise irq not found\n");
-                return ab->irq_num_id_rise;
-        }
-        err = request_threaded_irq(ab->irq_num_id_rise, NULL,
-                ab8500_usb_v1x_common_irq,
-                IRQF_NO_SUSPEND | IRQF_SHARED,
-                "usb-id-rise", ab);
-        if (err < 0) {
-                dev_err(ab->dev, "request_irq failed for ID rise irq\n");
-                goto fail0;
-        }
-
-        ab->irq_num_id_fall = platform_get_irq_byname(pdev, "ID_WAKEUP_F");
-        if (ab->irq_num_id_fall < 0) {
-                dev_err(&pdev->dev, "ID fall irq not found\n");
-                return ab->irq_num_id_fall;
-        }
-        err = request_threaded_irq(ab->irq_num_id_fall, NULL,
-                ab8500_usb_v1x_common_irq,
-                IRQF_NO_SUSPEND | IRQF_SHARED,
-                "usb-id-fall", ab);
-        if (err < 0) {
-                dev_err(ab->dev, "request_irq failed for ID fall irq\n");
-                goto fail1;
-        }
-
-        ab->irq_num_vbus_rise = platform_get_irq_byname(pdev, "VBUS_DET_R");
-        if (ab->irq_num_vbus_rise < 0) {
-                dev_err(&pdev->dev, "VBUS rise irq not found\n");
-                return ab->irq_num_vbus_rise;
-        }
-        err = request_threaded_irq(ab->irq_num_vbus_rise, NULL,
-                ab8500_usb_v1x_common_irq,
-                IRQF_NO_SUSPEND | IRQF_SHARED,
-                "usb-vbus-rise", ab);
-        if (err < 0) {
-                dev_err(ab->dev, "request_irq failed for Vbus rise irq\n");
-                goto fail2;
-        }
-
-        ab->irq_num_vbus_fall = platform_get_irq_byname(pdev, "VBUS_DET_F");
-        if (ab->irq_num_vbus_fall < 0) {
-                dev_err(&pdev->dev, "VBUS fall irq not found\n");
-                return ab->irq_num_vbus_fall;
-        }
-        err = request_threaded_irq(ab->irq_num_vbus_fall, NULL,
-                ab8500_usb_v1x_vbus_fall_irq,
-                IRQF_NO_SUSPEND | IRQF_SHARED,
-                "usb-vbus-fall", ab);
-        if (err < 0) {
-                dev_err(ab->dev, "request_irq failed for Vbus fall irq\n");
-                goto fail3;
-        }
-
-        return 0;
-fail3:
-        free_irq(ab->irq_num_vbus_rise, ab);
-fail2:
-        free_irq(ab->irq_num_id_fall, ab);
-fail1:
-        free_irq(ab->irq_num_id_rise, ab);
-fail0:
-        return err;
+        free_irq(ab->irq_num_link_status, ab);
 }
 
 static int ab8500_usb_v2_res_setup(struct platform_device *pdev,
@@ -471,16 +360,16 @@ static int ab8500_usb_v2_res_setup(struct platform_device *pdev,
 static int ab8500_usb_probe(struct platform_device *pdev)
 {
         struct ab8500_usb       *ab;
+        struct ab8500           *ab8500;
         struct usb_otg          *otg;
         int err;
         int rev;
 
+        ab8500 = dev_get_drvdata(pdev->dev.parent);
         rev = abx500_get_chip_id(&pdev->dev);
-        if (rev < 0) {
-                dev_err(&pdev->dev, "Chip id read failed\n");
-                return rev;
-        } else if (rev < 0x10) {
-                dev_err(&pdev->dev, "Unsupported AB8500 chip\n");
+
+        if (is_ab8500_1p1_or_earlier(ab8500)) {
+                dev_err(&pdev->dev, "Unsupported AB8500 chip rev=%d\n", rev);
                 return -ENODEV;
         }
 
@@ -495,7 +384,7 @@ static int ab8500_usb_probe(struct platform_device *pdev)
         }
 
         ab->dev                 = &pdev->dev;
-        ab->rev                 = rev;
+        ab->ab8500              = ab8500;
         ab->phy.dev             = ab->dev;
         ab->phy.otg             = otg;
         ab->phy.label           = "ab8500";
@@ -519,13 +408,7 @@ 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);
 
-        if (ab->rev < 0x20) {
-                err = ab8500_usb_v1x_res_setup(pdev, ab);
-                ab->link_status_wait = AB8500_V1x_LINK_STAT_WAIT;
-        } else {
-                err = ab8500_usb_v2_res_setup(pdev, ab);
-        }
-
+        err = ab8500_usb_v2_res_setup(pdev, ab);
         if (err < 0)
                 goto fail0;
 
@@ -535,7 +418,7 @@ static int ab8500_usb_probe(struct platform_device *pdev)
                 goto fail1;
         }
 
-        dev_info(&pdev->dev, "AB8500 usb driver initialized\n");
+        dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev);
 
         return 0;
 fail1: