ab8500_bm: Adds support for Car/Travel Adapters

The Travel and Carkit adapter should be handled directly by
the charger driver.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Marcus Cooper <marcus.xm.cooper@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>

1 files changed, 68 insertions, 24 deletions

diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index 126b325cddc9..a0aeef2d2e05 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -108,6 +108,18 @@ enum ab8500_charger_link_status {
         USB_STAT_HM_IDGND,
         USB_STAT_RESERVED,
         USB_STAT_NOT_VALID_LINK,
+        USB_STAT_PHY_EN,
+        USB_STAT_SUP_NO_IDGND_VBUS,
+        USB_STAT_SUP_IDGND_VBUS,
+        USB_STAT_CHARGER_LINE_1,
+        USB_STAT_CARKIT_1,
+        USB_STAT_CARKIT_2,
+        USB_STAT_ACA_DOCK_CHARGER,
+        USB_STAT_SAMSUNG_USB_PHY_DIS,
+        USB_STAT_SAMSUNG_USB_PHY_ENA,
+        USB_STAT_SAMSUNG_UART_PHY_DIS,
+        USB_STAT_SAMSUNG_UART_PHY_ENA,
+        USB_STAT_MOTOROLA_USB_PHY_ENA,
 };
 
 enum ab8500_usb_state {
@@ -586,7 +598,7 @@ static int ab8500_charger_detect_chargers(struct ab8500_charger *di)
  * Returns error code in case of failure else 0 on success
  */
 static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
-        enum ab8500_charger_link_status link_status)
+                enum ab8500_charger_link_status link_status)
 {
         int ret = 0;
 
@@ -595,15 +607,19 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
         case USB_STAT_STD_HOST_C_NS:
         case USB_STAT_STD_HOST_C_S:
                 dev_dbg(di->dev, "USB Type - Standard host is "
-                        "detected through USB driver\n");
+                                "detected through USB driver\n");
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P09;
                 break;
         case USB_STAT_HOST_CHG_HS_CHIRP:
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+                dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
+                                di->max_usb_in_curr);
                 break;
         case USB_STAT_HOST_CHG_HS:
         case USB_STAT_ACA_RID_C_HS:
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P9;
+                dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
+                                di->max_usb_in_curr);
                 break;
         case USB_STAT_ACA_RID_A:
                 /*
@@ -611,6 +627,8 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
                  * can consume (300mA). Closest level is 1100mA
                  */
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P1;
+                dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
+                                di->max_usb_in_curr);
                 break;
         case USB_STAT_ACA_RID_B:
                 /*
@@ -618,34 +636,50 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
                  * 100mA for potential accessory). Closest level is 1300mA
                  */
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P3;
+                dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
+                                di->max_usb_in_curr);
                 break;
-        case USB_STAT_DEDICATED_CHG:
         case USB_STAT_HOST_CHG_NM:
-        case USB_STAT_ACA_RID_C_HS_CHIRP:
+        case USB_STAT_DEDICATED_CHG:
         case USB_STAT_ACA_RID_C_NM:
+        case USB_STAT_ACA_RID_C_HS_CHIRP:
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
-                break;
-        case USB_STAT_RESERVED:
-                /*
-                 * This state is used to indicate that VBUS has dropped below
-                 * the detection level 4 times in a row. This is due to the
-                 * charger output current is set to high making the charger
-                 * voltage collapse. This have to be propagated through to
-                 * chargalg. This is done using the property
-                 * POWER_SUPPLY_PROP_CURRENT_AVG = 1
-                 */
-                di->flags.vbus_collapse = true;
-                dev_dbg(di->dev, "USB Type - USB_STAT_RESERVED "
-                        "VBUS has collapsed\n");
-                ret = -1;
+                dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
+                                di->max_usb_in_curr);
                 break;
         case USB_STAT_HM_IDGND:
-        case USB_STAT_NOT_CONFIGURED:
         case USB_STAT_NOT_VALID_LINK:
+        case USB_STAT_NOT_CONFIGURED:
                 dev_err(di->dev, "USB Type - Charging not allowed\n");
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
                 ret = -ENXIO;
                 break;
+        case USB_STAT_RESERVED:
+                if (is_ab8500(di->parent)) {
+                        di->flags.vbus_collapse = true;
+                        dev_err(di->dev, "USB Type - USB_STAT_RESERVED "
+                                                "VBUS has collapsed\n");
+                        ret = -ENXIO;
+                        break;
+                }
+                if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+                        dev_dbg(di->dev, "USB Type - Charging not allowed\n");
+                        di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+                        dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d",
+                                        link_status, di->max_usb_in_curr);
+                        ret = -ENXIO;
+                        break;
+                }
+                break;
+        case USB_STAT_CARKIT_1:
+        case USB_STAT_CARKIT_2:
+        case USB_STAT_ACA_DOCK_CHARGER:
+        case USB_STAT_CHARGER_LINE_1:
+                di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+                dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
+                                di->max_usb_in_curr);
+                break;
+
         default:
                 dev_err(di->dev, "USB Type - Unknown\n");
                 di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
@@ -677,8 +711,14 @@ static int ab8500_charger_read_usb_type(struct ab8500_charger *di)
                 dev_err(di->dev, "%s ab8500 read failed\n", __func__);
                 return ret;
         }
-        ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
-                AB8500_USB_LINE_STAT_REG, &val);
+        if (is_ab8500(di->parent)) {
+                ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+                                AB8500_USB_LINE_STAT_REG, &val);
+        } else {
+                if (is_ab9540(di->parent) || is_ab8505(di->parent))
+                        ret = abx500_get_register_interruptible(di->dev,
+                                AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
+        }
         if (ret < 0) {
                 dev_err(di->dev, "%s ab8500 read failed\n", __func__);
                 return ret;
@@ -718,8 +758,13 @@ static int ab8500_charger_detect_usb_type(struct ab8500_charger *di)
                         dev_err(di->dev, "%s ab8500 read failed\n", __func__);
                         return ret;
                 }
-                ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
-                        AB8500_USB_LINE_STAT_REG, &val);
+
+                if (is_ab8500(di->parent))
+                        ret = abx500_get_register_interruptible(di->dev,
+                                AB8500_USB, AB8500_USB_LINE_STAT_REG, &val);
+                else
+                        ret = abx500_get_register_interruptible(di->dev,
+                                AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
                 if (ret < 0) {
                         dev_err(di->dev, "%s ab8500 read failed\n", __func__);
                         return ret;
@@ -2944,7 +2989,6 @@ static int ab8500_charger_probe(struct platform_device *pdev)
         }
 
         if (charger_status & USB_PW_CONN) {
-                dev_dbg(di->dev, "VBUS Detect during startup\n");
                 di->vbus_detected = true;
                 di->vbus_detected_start = true;
                 queue_work(di->charger_wq,