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extcon: max8997: Remove duplicate code related to set H/W line path 

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Chanwoo Choi 2013-02-13 08:42:37 +09:00
parent e3e5bc02d2
commit 07c70503a4
2 changed files with 69 additions and 12 deletions
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62
drivers/extcon/extcon-max8997.c
View File

@ -94,16 +94,61 @@ static const char *max8997_extcon_cable[] = {
NULL,
};
/*
* max8997_muic_set_path - Set hardware line according to attached cable
* @info: the instance including private data of max8997 MUIC
* @value: the path according to attached cable
* @attached: the state of cable (true:attached, false:detached)
*
* The max8997 MUIC device share outside H/W line among a varity of cables,
* so this function set internal path of H/W line according to the type of
* attached cable.
*/
static int max8997_muic_set_path(struct max8997_muic_info *info,
u8 val, bool attached)
{
int ret = 0;
u8 ctrl1, ctrl2 = 0;
if (attached)
ctrl1 = val;
else
ctrl1 = CONTROL1_SW_OPEN;
ret = max8997_update_reg(info->muic,
MAX8997_MUIC_REG_CONTROL1, ctrl1, COMP_SW_MASK);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return -EAGAIN;
}
if (attached)
ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */
else
ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
ret = max8997_update_reg(info->muic,
MAX8997_MUIC_REG_CONTROL2, ctrl2,
CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return -EAGAIN;
}
dev_info(info->dev,
"CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
ctrl1, ctrl2, attached ? "attached" : "detached");
return 0;
}
static int max8997_muic_handle_usb(struct max8997_muic_info *info,
enum max8997_muic_usb_type usb_type, bool attached)
{
int ret = 0;
if (usb_type == MAX8997_USB_HOST) {
/* switch to USB */
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
attached ? CONTROL1_SW_USB : CONTROL1_SW_OPEN,
CONTROL1_SW_MASK);
ret = max8997_muic_set_path(info, CONTROL1_SW_USB, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
goto out;
@ -131,10 +176,7 @@ static int max8997_muic_handle_dock(struct max8997_muic_info *info,
{
int ret = 0;
/* switch to AUDIO */
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
attached ? CONTROL1_SW_AUDIO : CONTROL1_SW_OPEN,
CONTROL1_SW_MASK);
ret = max8997_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
goto out;
@ -161,9 +203,7 @@ static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
int ret = 0;
/* switch to UART */
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
attached ? CONTROL1_SW_UART : CONTROL1_SW_OPEN,
CONTROL1_SW_MASK);
ret = max8997_muic_set_path(info, CONTROL1_SW_UART, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
goto out;

19
include/linux/mfd/max8997-private.h
View File

@ -223,7 +223,7 @@ enum max8997_muic_reg {
#define COMP2SW_SHIFT 3
#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT)
#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT)
#define CONTROL1_SW_MASK (COMP2SW_MASK | COMN1SW_MASK)
#define COMP_SW_MASK (COMP2SW_MASK | COMN1SW_MASK)
#define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \
| (1 << COMN1SW_SHIFT))
@ -234,6 +234,23 @@ enum max8997_muic_reg {
#define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \
| (0 << COMN1SW_SHIFT))
#define CONTROL2_LOWPWR_SHIFT (0)
#define CONTROL2_ADCEN_SHIFT (1)
#define CONTROL2_CPEN_SHIFT (2)
#define CONTROL2_SFOUTASRT_SHIFT (3)
#define CONTROL2_SFOUTORD_SHIFT (4)
#define CONTROL2_ACCDET_SHIFT (5)
#define CONTROL2_USBCPINT_SHIFT (6)
#define CONTROL2_RCPS_SHIFT (7)
#define CONTROL2_LOWPWR_MASK (0x1 << CONTROL2_LOWPWR_SHIFT)
#define CONTROL2_ADCEN_MASK (0x1 << CONTROL2_ADCEN_SHIFT)
#define CONTROL2_CPEN_MASK (0x1 << CONTROL2_CPEN_SHIFT)
#define CONTROL2_SFOUTASRT_MASK (0x1 << CONTROL2_SFOUTASRT_SHIFT)
#define CONTROL2_SFOUTORD_MASK (0x1 << CONTROL2_SFOUTORD_SHIFT)
#define CONTROL2_ACCDET_MASK (0x1 << CONTROL2_ACCDET_SHIFT)
#define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT)
#define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT)
#define MAX8997_ADC_GROUND 0x00
#define MAX8997_ADC_MHL 0x01
#define MAX8997_ADC_JIG_USB_1 0x18