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usb: misc: usb3503: Add to select the ports to disable

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This patch is to disable the USB ports unconnected to USB3503. In order to
disable the port, 'port_off_mask' must be set.

* Disable PORT1 only
	.port_off_mask = USB3503_OFF_PORT1;

* Disable PORT1 and PORT3 only
	.port_off_mask = USB3503_OFF_PORT1 | USB3503_OFF_PORT3;

* Enables all ports
	.port_off_mask = 0;

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dongjin Kim 2013-05-22 05:20:08 +09:00 committed by Greg Kroah-Hartman
parent 45f6bc5ff9
commit e8e44a4896
2 changed files with 15 additions and 9 deletions
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19
drivers/usb/misc/usb3503.c
View File

@ -42,9 +42,6 @@
#define USB3503_NRD 0x09
#define USB3503_PDS 0x0a
#define USB3503_PORT1 (1 << 1)
#define USB3503_PORT2 (1 << 2)
#define USB3503_PORT3 (1 << 3)
#define USB3503_SP_ILOCK 0xe7
#define USB3503_SPILOCK_CONNECT (1 << 1)
@ -56,6 +53,7 @@
struct usb3503 {
enum usb3503_mode mode;
struct i2c_client *client;
u8 port_off_mask;
int gpio_intn;
int gpio_reset;
int gpio_connect;
@ -134,12 +132,14 @@ static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode)
goto err_hubmode;
}
/* PDS : Port2,3 Disable For Self Powered Operation */
err = usb3503_set_bits(i2c, USB3503_PDS,
(USB3503_PORT2 | USB3503_PORT3));
if (err < 0) {
dev_err(&i2c->dev, "PDS failed (%d)\n", err);
goto err_hubmode;
/* PDS : Disable For Self Powered Operation */
if (hub->port_off_mask) {
err = usb3503_set_bits(i2c, USB3503_PDS,
hub->port_off_mask);
if (err < 0) {
dev_err(&i2c->dev, "PDS failed (%d)\n", err);
goto err_hubmode;
}
}
/* CFG1 : SELF_BUS_PWR -> Self-Powerd operation */
@ -197,6 +197,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
hub->client = i2c;
if (pdata) {
hub->port_off_mask = pdata->port_off_mask;
hub->gpio_intn = pdata->gpio_intn;
hub->gpio_connect = pdata->gpio_connect;
hub->gpio_reset = pdata->gpio_reset;

5
include/linux/platform_data/usb3503.h
View File

@ -3,6 +3,10 @@
#define USB3503_I2C_NAME "usb3503"
#define USB3503_OFF_PORT1 (1 << 1)
#define USB3503_OFF_PORT2 (1 << 2)
#define USB3503_OFF_PORT3 (1 << 3)
enum usb3503_mode {
USB3503_MODE_UNKNOWN,
USB3503_MODE_HUB,
@ -11,6 +15,7 @@ enum usb3503_mode {
struct usb3503_platform_data {
enum usb3503_mode initial_mode;
u8 port_off_mask;
int gpio_intn;
int gpio_connect;
int gpio_reset;