[PATCH 14/57] power: Adds support for Car/Travel Adapters

From: mathieu . poirier
Date: Tue Sep 25 2012 - 12:13:19 EST

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From: Hakan Berg <hakan.berg@xxxxxxxxxxxxxx>

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

Signed-off-by: Marcus Cooper <marcus.xm.cooper@xxxxxxxxxxxxxx>
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Reviewed-by: Jonas ABERG <jonas.aberg@xxxxxxxxxxxxxx>
---
drivers/power/ab8500_charger.c | 94 +++++++++++++++++++++++++---------
include/linux/mfd/abx500/ab8500-bm.h | 1 +
2 files changed, 70 insertions(+), 25 deletions(-)

diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index 06a7c8b..09edd9c 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -105,6 +105,18 @@ 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 {
@@ -577,7 +589,7 @@ 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;

@@ -585,16 +597,20 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
case USB_STAT_STD_HOST_NC:
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");
+ dev_dbg(di->dev, "USB Type - Standard host is ");
+ dev_dbg(di->dev, "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:
/*
@@ -602,6 +618,8 @@ 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:
/*
@@ -609,34 +627,50 @@ 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 ");
+ dev_err(di->dev, "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;
@@ -668,8 +702,14 @@ 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;
@@ -709,8 +749,13 @@ 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;
@@ -2922,7 +2967,6 @@ static int __devinit 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,
diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h
index 73479f0..25af2c1 100644
--- a/include/linux/mfd/abx500/ab8500-bm.h
+++ b/include/linux/mfd/abx500/ab8500-bm.h
@@ -23,6 +23,7 @@
* Bank : 0x5
*/
#define AB8500_USB_LINE_STAT_REG 0x80
+#define AB8500_USB_LINK1_STAT_REG 0x94

/*
* Charger / status register offfsets
--
1.7.5.4

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Next message: mathieu . poirier: "[PATCH 16/57] power: bm remove superfluous BTEMP thermal comp."
Previous message: mathieu . poirier: "[PATCH 09/57] power: ab8500_fg: usleep_range instead of short msleep"
In reply to: Anton Vorontsov: "Re: [PATCH 09/57] power: ab8500_fg: usleep_range instead of shortmsleep"
Next in thread: mathieu . poirier: "[PATCH 16/57] power: bm remove superfluous BTEMP thermal comp."
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