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usb: phy: phy-gpio-vbus-usb: Convert to GPIO descriptors

Browse Source 
Instead of using the legacy GPIO API and keeping track on
polarity inversion semantics in the driver, switch to use
GPIO descriptors for this driver and change all consumers
in the process.

This makes it possible to retire platform data completely:
the only remaining platform data member was "wakeup" which
was intended to make the vbus interrupt wakeup capable,
but was not set by any users and thus remained unused. VBUS
was not waking any devices up. Leave a comment about it so
later developers using the platform can consider setting it
to always enabled so plugging in USB wakes up the platform.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Sylwester Nawrocki <snawrocki@kernel.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200123155013.93249-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Linus Walleij 2020-01-23 16:50:13 +01:00 committed by Greg Kroah-Hartman
parent eb7a3bb8c9
commit fdabc466f3
17 changed files with 188 additions and 193 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/arm/mach-pxa/colibri-pxa320.c
View File

@ -11,9 +11,9 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/mach-types.h>
#include <linux/sizes.h>
@ -144,17 +144,18 @@ static inline void __init colibri_pxa320_init_eth(void) {}
#endif /* CONFIG_AX88796 */
#if defined(CONFIG_USB_PXA27X)||defined(CONFIG_USB_PXA27X_MODULE)
static struct gpio_vbus_mach_info colibri_pxa320_gpio_vbus_info = {
.gpio_vbus = mfp_to_gpio(MFP_PIN_GPIO96),
.gpio_pullup = -1,
static struct gpiod_lookup_table gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", MFP_PIN_GPIO96,
"vbus", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device colibri_pxa320_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &colibri_pxa320_gpio_vbus_info,
},
};
static void colibri_pxa320_udc_command(int cmd)
@ -173,6 +174,7 @@ static struct pxa2xx_udc_mach_info colibri_pxa320_udc_info __initdata = {
static void __init colibri_pxa320_init_udc(void)
{
pxa_set_udc_info(&colibri_pxa320_udc_info);
gpiod_add_lookup_table(&gpio_vbus_gpiod_table);
platform_device_register(&colibri_pxa320_gpio_vbus);
}
#else

40
arch/arm/mach-pxa/eseries.c
View File

@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk-provider.h>
#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
@ -22,7 +23,6 @@
#include <linux/mfd/t7l66xb.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/memblock.h>
#include <video/w100fb.h>
@ -51,18 +51,20 @@ void __init eseries_fixup(struct tag *tags, char **cmdline)
memblock_add(0xa0000000, SZ_64M);
}
struct gpio_vbus_mach_info e7xx_udc_info = {
.gpio_vbus = GPIO_E7XX_USB_DISC,
.gpio_pullup = GPIO_E7XX_USB_PULLUP,
.gpio_pullup_inverted = 1
static struct gpiod_lookup_table e7xx_gpio_vbus_gpiod_table __maybe_unused = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_E7XX_USB_DISC,
"vbus", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_E7XX_USB_PULLUP,
"pullup", GPIO_ACTIVE_LOW),
{ },
},
};
static struct platform_device e7xx_gpio_vbus __maybe_unused = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &e7xx_udc_info,
},
};
struct pxaficp_platform_data e7xx_ficp_platform_data = {
@ -165,6 +167,7 @@ static void __init e330_init(void)
pxa_set_stuart_info(NULL);
eseries_register_clks();
eseries_get_tmio_gpios();
gpiod_add_lookup_table(&e7xx_gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(e330_devices));
}
@ -216,6 +219,7 @@ static void __init e350_init(void)
pxa_set_stuart_info(NULL);
eseries_register_clks();
eseries_get_tmio_gpios();
gpiod_add_lookup_table(&e7xx_gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(e350_devices));
}
@ -340,6 +344,7 @@ static void __init e400_init(void)
eseries_register_clks();
eseries_get_tmio_gpios();
pxa_set_fb_info(NULL, &e400_pxafb_mach_info);
gpiod_add_lookup_table(&e7xx_gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(e400_devices));
}
@ -534,6 +539,7 @@ static void __init e740_init(void)
clk_add_alias("CLK_CK48M", e740_t7l66xb_device.name,
"UDCCLK", &pxa25x_device_udc.dev),
eseries_get_tmio_gpios();
gpiod_add_lookup_table(&e7xx_gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(e740_devices));
pxa_set_ac97_info(NULL);
pxa_set_ficp_info(&e7xx_ficp_platform_data);
@ -733,6 +739,7 @@ static void __init e750_init(void)
clk_add_alias("CLK_CK3P6MI", e750_tc6393xb_device.name,
"GPIO11_CLK", NULL),
eseries_get_tmio_gpios();
gpiod_add_lookup_table(&e7xx_gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(e750_devices));
pxa_set_ac97_info(NULL);
pxa_set_ficp_info(&e7xx_ficp_platform_data);
@ -888,18 +895,20 @@ static struct platform_device e800_fb_device = {
/* --------------------------- UDC definitions --------------------------- */
static struct gpio_vbus_mach_info e800_udc_info = {
.gpio_vbus = GPIO_E800_USB_DISC,
.gpio_pullup = GPIO_E800_USB_PULLUP,
.gpio_pullup_inverted = 1
static struct gpiod_lookup_table e800_gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_E800_USB_DISC,
"vbus", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_E800_USB_PULLUP,
"pullup", GPIO_ACTIVE_LOW),
{ },
},
};
static struct platform_device e800_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &e800_udc_info,
},
};
@ -949,6 +958,7 @@ static void __init e800_init(void)
clk_add_alias("CLK_CK3P6MI", e800_tc6393xb_device.name,
"GPIO11_CLK", NULL),
eseries_get_tmio_gpios();
gpiod_add_lookup_table(&e800_gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(e800_devices));
pxa_set_ac97_info(NULL);
}

18
arch/arm/mach-pxa/gumstix.c
View File

@ -20,10 +20,10 @@
#include <linux/delay.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/setup.h>
#include <asm/memory.h>
@ -101,21 +101,25 @@ static void __init gumstix_mmc_init(void)
#endif
#ifdef CONFIG_USB_PXA25X
static struct gpio_vbus_mach_info gumstix_udc_info = {
.gpio_vbus = GPIO_GUMSTIX_USB_GPIOn,
.gpio_pullup = GPIO_GUMSTIX_USB_GPIOx,
static struct gpiod_lookup_table gumstix_gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_GUMSTIX_USB_GPIOn,
"vbus", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_GUMSTIX_USB_GPIOx,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device gumstix_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &gumstix_udc_info,
},
};
static void __init gumstix_udc_init(void)
{
gpiod_add_lookup_table(&gumstix_gpio_vbus_gpiod_table);
platform_device_register(&gumstix_gpio_vbus);
}
#else

22
arch/arm/mach-pxa/hx4700.c
View File

@ -34,7 +34,6 @@
#include <linux/spi/ads7846.h>
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/platform_data/i2c-pxa.h>
#include <mach/hardware.h>
@ -578,18 +577,24 @@ static struct pwm_lookup hx4700_pwm_lookup[] = {
* USB "Transceiver"
*/
static struct gpio_vbus_mach_info gpio_vbus_info = {
.gpio_pullup = GPIO76_HX4700_USBC_PUEN,
.gpio_vbus = GPIOD14_nUSBC_DETECT,
.gpio_vbus_inverted = 1,
static struct gpiod_lookup_table gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
/* This GPIO is on ASIC3 */
GPIO_LOOKUP("asic3",
/* Convert to a local offset on the ASIC3 */
GPIOD14_nUSBC_DETECT - HX4700_ASIC3_GPIO_BASE,
"vbus", GPIO_ACTIVE_LOW),
/* This one is on the primary SOC GPIO */
GPIO_LOOKUP("gpio-pxa", GPIO76_HX4700_USBC_PUEN,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &gpio_vbus_info,
},
};
static struct pxa2xx_udc_mach_info hx4700_udc_info;
@ -883,6 +888,7 @@ static void __init hx4700_init(void)
pxa_set_stuart_info(NULL);
gpiod_add_lookup_table(&bq24022_gpiod_table);
gpiod_add_lookup_table(&gpio_vbus_gpiod_table);
platform_add_devices(devices, ARRAY_SIZE(devices));
pwm_add_table(hx4700_pwm_lookup, ARRAY_SIZE(hx4700_pwm_lookup));

22
arch/arm/mach-pxa/magician.c
View File

@ -27,7 +27,6 @@
#include <linux/regulator/fixed.h>
#include <linux/regulator/gpio-regulator.h>
#include <linux/regulator/machine.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/platform_data/i2c-pxa.h>
#include <mach/hardware.h>
@ -506,9 +505,20 @@ static struct resource gpio_vbus_resource = {
.end = IRQ_MAGICIAN_VBUS,
};
static struct gpio_vbus_mach_info gpio_vbus_info = {
.gpio_pullup = GPIO27_MAGICIAN_USBC_PUEN,
.gpio_vbus = EGPIO_MAGICIAN_CABLE_VBUS,
static struct gpiod_lookup_table gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
/*
* EGPIO on register 4 index 1, the second EGPIO chip
* starts at register 4 so this will be at index 1 on that
* chip.
*/
GPIO_LOOKUP("htc-egpio-1", 1,
"vbus", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO27_MAGICIAN_USBC_PUEN,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device gpio_vbus = {
@ -516,9 +526,6 @@ static struct platform_device gpio_vbus = {
.id = -1,
.num_resources = 1,
.resource = &gpio_vbus_resource,
.dev = {
.platform_data = &gpio_vbus_info,
},
};
/*
@ -1032,6 +1039,7 @@ static void __init magician_init(void)
ARRAY_SIZE(pwm_backlight_supply), 5000000);
gpiod_add_lookup_table(&bq24022_gpiod_table);
gpiod_add_lookup_table(&gpio_vbus_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(devices));
}

15
arch/arm/mach-pxa/mioa701.c
View File

@ -24,7 +24,6 @@
#include <linux/power_supply.h>
#include <linux/wm97xx.h>
#include <linux/mtd/physmap.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/reboot.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/max1586.h>
@ -368,10 +367,13 @@ static struct pxa2xx_udc_mach_info mioa701_udc_info = {
.gpio_pullup = GPIO22_USB_ENABLE,
};
struct gpio_vbus_mach_info gpio_vbus_data = {
.gpio_vbus = GPIO13_nUSB_DETECT,
.gpio_vbus_inverted = 1,
.gpio_pullup = -1,
static struct gpiod_lookup_table gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO13_nUSB_DETECT,
"vbus", GPIO_ACTIVE_LOW),
{ },
},
};
/*
@ -677,7 +679,7 @@ MIO_SIMPLE_DEV(mioa701_led, "leds-gpio", &gpio_led_info)
MIO_SIMPLE_DEV(pxa2xx_pcm, "pxa2xx-pcm", NULL)
MIO_SIMPLE_DEV(mioa701_sound, "mioa701-wm9713", NULL)
MIO_SIMPLE_DEV(mioa701_board, "mioa701-board", NULL)
MIO_SIMPLE_DEV(gpio_vbus, "gpio-vbus", &gpio_vbus_data);
MIO_SIMPLE_DEV(gpio_vbus, "gpio-vbus", NULL);
static struct platform_device *devices[] __initdata = {
&mioa701_gpio_keys,
@ -750,6 +752,7 @@ static void __init mioa701_machine_init(void)
pxa_set_ac97_info(&mioa701_ac97_info);
pm_power_off = mioa701_poweroff;
pwm_add_table(mioa701_pwm_lookup, ARRAY_SIZE(mioa701_pwm_lookup));
gpiod_add_lookup_table(&gpio_vbus_gpiod_table);
platform_add_devices(devices, ARRAY_SIZE(devices));
gsm_init();

34
arch/arm/mach-pxa/palm27x.c
View File

@ -13,10 +13,10 @@
#include <linux/pda_power.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/regulator/max1586.h>
#include <linux/platform_data/i2c-pxa.h>
@ -159,32 +159,32 @@ void __init palm27x_lcd_init(int power, struct pxafb_mode_info *mode)
******************************************************************************/
#if defined(CONFIG_USB_PXA27X) || \
defined(CONFIG_USB_PXA27X_MODULE)
static struct gpio_vbus_mach_info palm27x_udc_info = {
.gpio_vbus_inverted = 1,
/* The actual GPIO offsets get filled in in the palm27x_udc_init() call */
static struct gpiod_lookup_table palm27x_udc_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", 0,
"vbus", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", 0,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device palm27x_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &palm27x_udc_info,
},
};
void __init palm27x_udc_init(int vbus, int pullup, int vbus_inverted)
{
palm27x_udc_info.gpio_vbus = vbus;
palm27x_udc_info.gpio_pullup = pullup;
palm27x_udc_info.gpio_vbus_inverted = vbus_inverted;
if (!gpio_request(pullup, "USB Pullup")) {
gpio_direction_output(pullup,
palm27x_udc_info.gpio_vbus_inverted);
gpio_free(pullup);
} else
return;
palm27x_udc_gpiod_table.table[0].chip_hwnum = vbus;
palm27x_udc_gpiod_table.table[1].chip_hwnum = pullup;
if (vbus_inverted)
palm27x_udc_gpiod_table.table[0].flags = GPIO_ACTIVE_LOW;
gpiod_add_lookup_table(&palm27x_udc_gpiod_table);
platform_device_register(&palm27x_gpio_vbus);
}
#endif

1
arch/arm/mach-pxa/palmt5.c
View File

@ -23,7 +23,6 @@
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>

18
arch/arm/mach-pxa/palmtc.c
View File

@ -23,7 +23,6 @@
#include <linux/power_supply.h>
#include <linux/gpio_keys.h>
#include <linux/mtd/physmap.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -319,22 +318,25 @@ static inline void palmtc_mkp_init(void) {}
* UDC
******************************************************************************/
#if defined(CONFIG_USB_PXA25X)||defined(CONFIG_USB_PXA25X_MODULE)
static struct gpio_vbus_mach_info palmtc_udc_info = {
.gpio_vbus = GPIO_NR_PALMTC_USB_DETECT_N,
.gpio_vbus_inverted = 1,
.gpio_pullup = GPIO_NR_PALMTC_USB_POWER,
static struct gpiod_lookup_table palmtc_udc_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_USB_DETECT_N,
"vbus", GPIO_ACTIVE_LOW),
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_USB_POWER,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device palmtc_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &palmtc_udc_info,
},
};
static void __init palmtc_udc_init(void)
{
gpiod_add_lookup_table(&palmtc_udc_gpiod_table);
platform_device_register(&palmtc_gpio_vbus);
};
#else

18
arch/arm/mach-pxa/palmte2.c
View File

@ -23,7 +23,6 @@
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -201,18 +200,20 @@ static struct pxaficp_platform_data palmte2_ficp_platform_data = {
/******************************************************************************
* UDC
******************************************************************************/
static struct gpio_vbus_mach_info palmte2_udc_info = {
.gpio_vbus = GPIO_NR_PALMTE2_USB_DETECT_N,
.gpio_vbus_inverted = 1,
.gpio_pullup = GPIO_NR_PALMTE2_USB_PULLUP,
static struct gpiod_lookup_table palmte2_udc_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_USB_DETECT_N,
"vbus", GPIO_ACTIVE_LOW),
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_USB_PULLUP,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device palmte2_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &palmte2_udc_info,
},
};
/******************************************************************************
@ -368,6 +369,7 @@ static void __init palmte2_init(void)
pxa_set_ficp_info(&palmte2_ficp_platform_data);
pwm_add_table(palmte2_pwm_lookup, ARRAY_SIZE(palmte2_pwm_lookup));
gpiod_add_lookup_table(&palmte2_udc_gpiod_table);
platform_add_devices(devices, ARRAY_SIZE(devices));
}

1
arch/arm/mach-pxa/palmtx.c
View File

@ -23,7 +23,6 @@
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/mtd/platnand.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.h>

1
arch/arm/mach-pxa/palmz72.c
View File

@ -25,7 +25,6 @@
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/platform_data/i2c-gpio.h>
#include <linux/gpio/machine.h>

18
arch/arm/mach-pxa/tosa.c
View File

@ -33,7 +33,6 @@
#include <linux/spi/pxa2xx_spi.h>
#include <linux/input/matrix_keypad.h>
#include <linux/platform_data/i2c-pxa.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/reboot.h>
#include <linux/memblock.h>
@ -240,18 +239,20 @@ static struct scoop_pcmcia_config tosa_pcmcia_config = {
/*
* USB Device Controller
*/
static struct gpio_vbus_mach_info tosa_udc_info = {
.gpio_pullup = TOSA_GPIO_USB_PULLUP,
.gpio_vbus = TOSA_GPIO_USB_IN,
.gpio_vbus_inverted = 1,
static struct gpiod_lookup_table tosa_udc_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", TOSA_GPIO_USB_IN,
"vbus", GPIO_ACTIVE_LOW),
GPIO_LOOKUP("gpio-pxa", TOSA_GPIO_USB_PULLUP,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device tosa_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &tosa_udc_info,
},
};
/*
@ -949,6 +950,7 @@ static void __init tosa_init(void)
clk_add_alias("CLK_CK3P6MI", tc6393xb_device.name, "GPIO11_CLK", NULL);
gpiod_add_lookup_table(&tosa_udc_gpiod_table);
platform_add_devices(devices, ARRAY_SIZE(devices));
}

15
arch/arm/mach-pxa/vpac270.c
View File

@ -14,7 +14,6 @@
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
@ -352,17 +351,18 @@ static inline void vpac270_uhc_init(void) {}
* USB Gadget
******************************************************************************/
#if defined(CONFIG_USB_PXA27X)||defined(CONFIG_USB_PXA27X_MODULE)
static struct gpio_vbus_mach_info vpac270_gpio_vbus_info = {
.gpio_vbus = GPIO41_VPAC270_UDC_DETECT,
.gpio_pullup = -1,
static struct gpiod_lookup_table vpac270_gpio_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO41_VPAC270_UDC_DETECT,
"vbus", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device vpac270_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &vpac270_gpio_vbus_info,
},
};
static void vpac270_udc_command(int cmd)
@ -381,6 +381,7 @@ static struct pxa2xx_udc_mach_info vpac270_udc_info __initdata = {
static void __init vpac270_udc_init(void)
{
pxa_set_udc_info(&vpac270_udc_info);
gpiod_add_lookup_table(&vpac270_gpio_vbus_gpiod_table);
platform_device_register(&vpac270_gpio_vbus);
}
#else

13
arch/arm/mach-s3c64xx/mach-smartq.c
View File

@ -13,7 +13,6 @@
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/spi/spi_gpio.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/platform_data/s3c-hsotg.h>
#include <asm/mach-types.h>
@ -124,15 +123,16 @@ static struct s3c2410_hcd_info smartq_usb_host_info = {
.enable_oc = smartq_usb_host_enableoc,
};
static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
.gpio_vbus = S3C64XX_GPL(9),
.gpio_pullup = -1,
.gpio_vbus_inverted = true,
static struct gpiod_lookup_table smartq_usb_otg_vbus_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("GPL", 9, "vbus", GPIO_ACTIVE_LOW),
{ },
},
};
static struct platform_device smartq_usb_otg_vbus_dev = {
.name = "gpio-vbus",
.dev.platform_data = &smartq_usb_otg_vbus_pdata,
};
static struct pwm_lookup smartq_pwm_lookup[] = {
@ -418,6 +418,7 @@ void __init smartq_machine_init(void)
pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
gpiod_add_lookup_table(&smartq_lcd_control_gpiod_table);
gpiod_add_lookup_table(&smartq_usb_otg_vbus_gpiod_table);
platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
gpiod_add_lookup_table(&smartq_audio_gpios);

96
drivers/usb/phy/phy-gpio-vbus-usb.c
View File

@ -7,7 +7,7 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
@ -17,7 +17,6 @@
#include <linux/regulator/consumer.h>
#include <linux/usb/gadget.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/usb/otg.h>
@ -29,6 +28,8 @@
* Needs to be loaded before the UDC driver that will use it.
*/
struct gpio_vbus_data {
struct gpio_desc *vbus_gpiod;
struct gpio_desc *pullup_gpiod;
struct usb_phy phy;
struct device *dev;
struct regulator *vbus_draw;
@ -83,38 +84,30 @@ static void set_vbus_draw(struct gpio_vbus_data *gpio_vbus, unsigned mA)
gpio_vbus->mA = mA;
}
static int is_vbus_powered(struct gpio_vbus_mach_info *pdata)
static int is_vbus_powered(struct gpio_vbus_data *gpio_vbus)
{
int vbus;
vbus = gpio_get_value(pdata->gpio_vbus);
if (pdata->gpio_vbus_inverted)
vbus = !vbus;
return vbus;
return gpiod_get_value(gpio_vbus->vbus_gpiod);
}
static void gpio_vbus_work(struct work_struct *work)
{
struct gpio_vbus_data *gpio_vbus =
container_of(work, struct gpio_vbus_data, work.work);
struct gpio_vbus_mach_info *pdata = dev_get_platdata(gpio_vbus->dev);
int gpio, status, vbus;
int status, vbus;
if (!gpio_vbus->phy.otg->gadget)
return;
vbus = is_vbus_powered(pdata);
vbus = is_vbus_powered(gpio_vbus);
if ((vbus ^ gpio_vbus->vbus) == 0)
return;
gpio_vbus->vbus = vbus;
/* Peripheral controllers which manage the pullup themselves won't have
* gpio_pullup configured here. If it's configured here, we'll do what
* isp1301_omap::b_peripheral() does and enable the pullup here... although
* that may complicate usb_gadget_{,dis}connect() support.
* a pullup GPIO configured here. If it's configured here, we'll do
* what isp1301_omap::b_peripheral() does and enable the pullup here...
* although that may complicate usb_gadget_{,dis}connect() support.
*/
gpio = pdata->gpio_pullup;
if (vbus) {
status = USB_EVENT_VBUS;
@ -126,16 +119,16 @@ static void gpio_vbus_work(struct work_struct *work)
set_vbus_draw(gpio_vbus, 100);
/* optionally enable D+ pullup */
if (gpio_is_valid(gpio))
gpio_set_value(gpio, !pdata->gpio_pullup_inverted);
if (gpio_vbus->pullup_gpiod)
gpiod_set_value(gpio_vbus->pullup_gpiod, 1);
atomic_notifier_call_chain(&gpio_vbus->phy.notifier,
status, gpio_vbus->phy.otg->gadget);
usb_phy_set_event(&gpio_vbus->phy, USB_EVENT_ENUMERATED);
} else {
/* optionally disable D+ pullup */
if (gpio_is_valid(gpio))
gpio_set_value(gpio, pdata->gpio_pullup_inverted);
if (gpio_vbus->pullup_gpiod)
gpiod_set_value(gpio_vbus->pullup_gpiod, 0);
set_vbus_draw(gpio_vbus, 0);
@ -154,12 +147,11 @@ static void gpio_vbus_work(struct work_struct *work)
static irqreturn_t gpio_vbus_irq(int irq, void *data)
{
struct platform_device *pdev = data;
struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev);
struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev);
struct usb_otg *otg = gpio_vbus->phy.otg;
dev_dbg(&pdev->dev, "VBUS %s (gadget: %s)\n",
is_vbus_powered(pdata) ? "supplied" : "inactive",
is_vbus_powered(gpio_vbus) ? "supplied" : "inactive",
otg->gadget ? otg->gadget->name : "none");
if (otg->gadget)
@ -175,22 +167,18 @@ static int gpio_vbus_set_peripheral(struct usb_otg *otg,
struct usb_gadget *gadget)
{
struct gpio_vbus_data *gpio_vbus;
struct gpio_vbus_mach_info *pdata;
struct platform_device *pdev;
int gpio;
gpio_vbus = container_of(otg->usb_phy, struct gpio_vbus_data, phy);
pdev = to_platform_device(gpio_vbus->dev);
pdata = dev_get_platdata(gpio_vbus->dev);
gpio = pdata->gpio_pullup;
if (!gadget) {
dev_dbg(&pdev->dev, "unregistering gadget '%s'\n",
otg->gadget->name);
/* optionally disable D+ pullup */
if (gpio_is_valid(gpio))
gpio_set_value(gpio, pdata->gpio_pullup_inverted);
if (gpio_vbus->pullup_gpiod)
gpiod_set_value(gpio_vbus->pullup_gpiod, 0);
set_vbus_draw(gpio_vbus, 0);
@ -242,16 +230,12 @@ static int gpio_vbus_set_suspend(struct usb_phy *phy, int suspend)
static int gpio_vbus_probe(struct platform_device *pdev)
{
struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev);
struct gpio_vbus_data *gpio_vbus;
struct resource *res;
int err, gpio, irq;
struct device *dev = &pdev->dev;
int err, irq;
unsigned long irqflags;
if (!pdata || !gpio_is_valid(pdata->gpio_vbus))
return -EINVAL;
gpio = pdata->gpio_vbus;
gpio_vbus = devm_kzalloc(&pdev->dev, sizeof(struct gpio_vbus_data),
GFP_KERNEL);
if (!gpio_vbus)
@ -273,37 +257,43 @@ static int gpio_vbus_probe(struct platform_device *pdev)
gpio_vbus->phy.otg->usb_phy = &gpio_vbus->phy;
gpio_vbus->phy.otg->set_peripheral = gpio_vbus_set_peripheral;
err = devm_gpio_request(&pdev->dev, gpio, "vbus_detect");
if (err) {
dev_err(&pdev->dev, "can't request vbus gpio %d, err: %d\n",
gpio, err);
/* Look up the VBUS sensing GPIO */
gpio_vbus->vbus_gpiod = devm_gpiod_get(dev, "vbus", GPIOD_IN);
if (IS_ERR(gpio_vbus->vbus_gpiod)) {
err = PTR_ERR(gpio_vbus->vbus_gpiod);
dev_err(&pdev->dev, "can't request vbus gpio, err: %d\n", err);
return err;
}
gpio_direction_input(gpio);
gpiod_set_consumer_name(gpio_vbus->vbus_gpiod, "vbus_detect");
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res) {
irq = res->start;
irqflags = (res->flags & IRQF_TRIGGER_MASK) | IRQF_SHARED;
} else {
irq = gpio_to_irq(gpio);
irq = gpiod_to_irq(gpio_vbus->vbus_gpiod);
irqflags = VBUS_IRQ_FLAGS;
}
gpio_vbus->irq = irq;
/* if data line pullup is in use, initialize it to "not pulling up" */
gpio = pdata->gpio_pullup;
if (gpio_is_valid(gpio)) {
err = devm_gpio_request(&pdev->dev, gpio, "udc_pullup");
if (err) {
dev_err(&pdev->dev,
"can't request pullup gpio %d, err: %d\n",
gpio, err);
return err;
}
gpio_direction_output(gpio, pdata->gpio_pullup_inverted);
/*
* The VBUS sensing GPIO should have a pulldown, which will normally be
* part of a resistor ladder turning a 4.0V-5.25V level on VBUS into a
* value the GPIO detects as active. Some systems will use comparators.
* Get the optional D+ or D- pullup GPIO. If the data line pullup is
* in use, initialize it to "not pulling up"
*/
gpio_vbus->pullup_gpiod = devm_gpiod_get_optional(dev, "pullup",
GPIOD_OUT_LOW);
if (IS_ERR(gpio_vbus->pullup_gpiod)) {
err = PTR_ERR(gpio_vbus->pullup_gpiod);
dev_err(&pdev->dev, "can't request pullup gpio, err: %d\n",
err);
return err;
}
if (gpio_vbus->pullup_gpiod)
gpiod_set_consumer_name(gpio_vbus->pullup_gpiod, "udc_pullup");
err = devm_request_irq(&pdev->dev, irq, gpio_vbus_irq, irqflags,
"vbus_detect", pdev);
@ -330,7 +320,7 @@ static int gpio_vbus_probe(struct platform_device *pdev)
return err;
}
device_init_wakeup(&pdev->dev, pdata->wakeup);
/* TODO: wakeup could be enabled here with device_init_wakeup(dev, 1) */
return 0;
}

33
include/linux/usb/gpio_vbus.h
View File

@ -1,33 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* A simple GPIO VBUS sensing driver for B peripheral only devices
* with internal transceivers.
* Optionally D+ pullup can be controlled by a second GPIO.
*
* Copyright (c) 2008 Philipp Zabel <philipp.zabel@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
/**
* struct gpio_vbus_mach_info - configuration for gpio_vbus
* @gpio_vbus: VBUS sensing GPIO
* @gpio_pullup: optional D+ or D- pullup GPIO (else negative/invalid)
* @gpio_vbus_inverted: true if gpio_vbus is active low
* @gpio_pullup_inverted: true if gpio_pullup is active low
* @wakeup: configure gpio_vbus as a wake-up source
*
* The VBUS sensing GPIO should have a pulldown, which will normally be
* part of a resistor ladder turning a 4.0V-5.25V level on VBUS into a
* value the GPIO detects as active. Some systems will use comparators.
*/
struct gpio_vbus_mach_info {
int gpio_vbus;
int gpio_pullup;
bool gpio_vbus_inverted;
bool gpio_pullup_inverted;
bool wakeup;
};