diff options
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/usb/misc/ftdi-elan.c | 6 | ||||
| -rw-r--r-- | drivers/usb/misc/sisusbvga/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/usb/misc/usb251xb.c | 49 |
4 files changed, 50 insertions, 15 deletions
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index 9bce583aada3..653aa34aba6c 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -181,8 +181,8 @@ config USB_TEST including sample test device firmware and "how to use it". config USB_EHSET_TEST_FIXTURE - tristate "USB EHSET Test Fixture driver" - help + tristate "USB EHSET Test Fixture driver" + help Say Y here if you want to support the special test fixture device used for the USB-IF Embedded Host High-Speed Electrical Test procedure. @@ -237,13 +237,13 @@ config USB_HSIC_USB3503 depends on I2C select REGMAP_I2C help - This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver. + This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver. config USB_HSIC_USB4604 tristate "USB4604 HSIC to USB20 Driver" depends on I2C help - This option enables support for SMSC USB4604 HSIC to USB 2.0 Driver. + This option enables support for SMSC USB4604 HSIC to USB 2.0 Driver. config USB_LINK_LAYER_TEST tristate "USB Link Layer Test driver" diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index cdee3af33ad7..8a3d9c0c8d8b 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -333,7 +333,8 @@ static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi) *respond->result = -ESHUTDOWN; *respond->value = 0; complete(&respond->wait_completion); - } mutex_unlock(&ftdi->u132_lock); + } + mutex_unlock(&ftdi->u132_lock); } static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi) @@ -763,7 +764,8 @@ static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size) struct u132_command *command = &ftdi->command[COMMAND_MASK & i++]; total_size += 5 + command->follows; - } return total_size; + } + return total_size; } static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) diff --git a/drivers/usb/misc/sisusbvga/Kconfig b/drivers/usb/misc/sisusbvga/Kconfig index 9b632ab24f03..c16121276a21 100644 --- a/drivers/usb/misc/sisusbvga/Kconfig +++ b/drivers/usb/misc/sisusbvga/Kconfig @@ -4,7 +4,7 @@ config USB_SISUSBVGA tristate "USB 2.0 SVGA dongle support (Net2280/SiS315)" depends on (USB_MUSB_HDRC || USB_EHCI_HCD) select FONT_SUPPORT if USB_SISUSBVGA_CON - ---help--- + ---help--- Say Y here if you intend to attach a USB2VGA dongle based on a Net2280 and a SiS315 chip. diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 6ca9111d150a..5bba19937da1 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/nls.h> #include <linux/of_device.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> /* Internal Register Set Addresses & Default Values acc. to DS00001692C */ @@ -116,6 +117,7 @@ struct usb251xb { struct device *dev; struct i2c_client *i2c; + struct regulator *vdd; u8 skip_config; struct gpio_desc *gpio_reset; u16 vendor_id; @@ -261,20 +263,19 @@ static int usb251x_check_gpio_chip(struct usb251xb *hub) } #endif -static void usb251xb_reset(struct usb251xb *hub, int state) +static void usb251xb_reset(struct usb251xb *hub) { if (!hub->gpio_reset) return; i2c_lock_bus(hub->i2c->adapter, I2C_LOCK_SEGMENT); - gpiod_set_value_cansleep(hub->gpio_reset, state); + gpiod_set_value_cansleep(hub->gpio_reset, 1); + usleep_range(1, 10); /* >=1us RESET_N asserted */ + gpiod_set_value_cansleep(hub->gpio_reset, 0); /* wait for hub recovery/stabilization */ - if (!state) - usleep_range(500, 750); /* >=500us at power on */ - else - usleep_range(1, 10); /* >=1us at power down */ + usleep_range(500, 750); /* >=500us after RESET_N deasserted */ i2c_unlock_bus(hub->i2c->adapter, I2C_LOCK_SEGMENT); } @@ -292,7 +293,7 @@ static int usb251xb_connect(struct usb251xb *hub) i2c_wb[0] = 0x01; i2c_wb[1] = USB251XB_STATUS_COMMAND_ATTACH; - usb251xb_reset(hub, 0); + usb251xb_reset(hub); err = i2c_smbus_write_i2c_block_data(hub->i2c, USB251XB_ADDR_STATUS_COMMAND, 2, i2c_wb); @@ -342,7 +343,7 @@ static int usb251xb_connect(struct usb251xb *hub) i2c_wb[USB251XB_ADDR_PORT_MAP_7] = hub->port_map7; i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH; - usb251xb_reset(hub, 0); + usb251xb_reset(hub); /* write registers */ for (i = 0; i < (USB251XB_I2C_REG_SZ / USB251XB_I2C_WRITE_SZ); i++) { @@ -420,6 +421,10 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, return err; } + hub->vdd = devm_regulator_get(dev, "vdd"); + if (IS_ERR(hub->vdd)) + return PTR_ERR(hub->vdd); + if (of_property_read_u16_array(np, "vendor-id", &hub->vendor_id, 1)) hub->vendor_id = USB251XB_DEF_VENDOR_ID; @@ -665,6 +670,10 @@ static int usb251xb_probe(struct usb251xb *hub) if (err) return err; + err = regulator_enable(hub->vdd); + if (err) + return err; + err = usb251xb_connect(hub); if (err) { dev_err(dev, "Failed to connect hub (%d)\n", err); @@ -692,6 +701,29 @@ static int usb251xb_i2c_probe(struct i2c_client *i2c, return usb251xb_probe(hub); } +static int __maybe_unused usb251xb_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct usb251xb *hub = i2c_get_clientdata(client); + + return regulator_disable(hub->vdd); +} + +static int __maybe_unused usb251xb_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct usb251xb *hub = i2c_get_clientdata(client); + int err; + + err = regulator_enable(hub->vdd); + if (err) + return err; + + return usb251xb_connect(hub); +} + +static SIMPLE_DEV_PM_OPS(usb251xb_pm_ops, usb251xb_suspend, usb251xb_resume); + static const struct i2c_device_id usb251xb_id[] = { { "usb2512b", 0 }, { "usb2512bi", 0 }, @@ -709,6 +741,7 @@ static struct i2c_driver usb251xb_i2c_driver = { .driver = { .name = DRIVER_NAME, .of_match_table = of_match_ptr(usb251xb_of_match), + .pm = &usb251xb_pm_ops, }, .probe = usb251xb_i2c_probe, .id_table = usb251xb_id, |