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authorChanwoo Choi <cw00.choi@samsung.com>2013-02-13 15:04:15 +0900
committerChanwoo Choi <cw00.choi@samsung.com>2013-02-14 07:54:36 +0900
commit685dc9a7dbfede28cc4a0fe4e65804194ec04fa5 (patch)
treea9fdfc0c829dde97092c3e92d0ee70ce61a56436 /drivers/extcon
parentf73f6232af9131f7b6fc6e377267e4a441727eb3 (diff)
downloadlinux-685dc9a7dbfede28cc4a0fe4e65804194ec04fa5.tar.bz2
extcon: max8997: Set default UART/USB path on probe
This patch set default H/W line path according to platfomr data. The MAX8997 MUIC device can possibly set UART/USB or UART_AUX /USB_AUX to internal H/W line path of MUIC device. Namely, only one H/W line is used for two operation. For example, if H/W line path of MAX8997 device set UART/USB, micro usb cable is connected to AP(Application Processor) and if H/W line path set UART_AUX/USB_AUX, micro usb cable is connected to CP(Coprocessor). Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers/extcon')
-rw-r--r--drivers/extcon/extcon-max8997.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 35338a090c06..349f65f6a4a4 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -127,6 +127,13 @@ struct max8997_muic_info {
struct max8997_muic_platform_data *muic_pdata;
enum max8997_muic_charger_type pre_charger_type;
+
+ /*
+ * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
+ * h/w path of COMP2/COMN1 on CONTROL1 register.
+ */
+ int path_usb;
+ int path_uart;
};
enum {
@@ -322,7 +329,7 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
int ret = 0;
if (usb_type == MAX8997_USB_HOST) {
- ret = max8997_muic_set_path(info, CONTROL1_SW_USB, attached);
+ ret = max8997_muic_set_path(info, info->path_usb, attached);
if (ret < 0) {
dev_err(info->dev, "failed to update muic register\n");
return ret;
@@ -378,7 +385,7 @@ static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
int ret = 0;
/* switch to UART */
- ret = max8997_muic_set_path(info, CONTROL1_SW_UART, attached);
+ ret = max8997_muic_set_path(info, info->path_uart, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
return -EINVAL;
@@ -694,6 +701,23 @@ static int max8997_muic_probe(struct platform_device *pdev)
}
}
+ /*
+ * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
+ * h/w path of COMP2/COMN1 on CONTROL1 register.
+ */
+ if (pdata->muic_pdata->path_uart)
+ info->path_uart = pdata->muic_pdata->path_uart;
+ else
+ info->path_uart = CONTROL1_SW_UART;
+
+ if (pdata->muic_pdata->path_usb)
+ info->path_usb = pdata->muic_pdata->path_usb;
+ else
+ info->path_usb = CONTROL1_SW_USB;
+
+ /* Set initial path for UART */
+ max8997_muic_set_path(info, info->path_uart, true);
+
/* Set ADC debounce time */
max8997_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);