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pinctrl: replace trivial implementations of gpio_chip request/free 

Replace all trivial request/free callbacks that do nothing but call into
pinctrl code with the generic versions.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Jonas Gorski 2015-10-11 17:34:19 +02:00 committed by Linus Walleij
parent 31831f41bf
commit 98c85d583a
21 changed files with 42 additions and 290 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/pinctrl/bcm/pinctrl-bcm2835.c
View File

@ -330,16 +330,6 @@ static inline void bcm2835_pinctrl_fsel_set(
bcm2835_gpio_wr(pc, FSEL_REG(pin), val);
}
static int bcm2835_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void bcm2835_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int bcm2835_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_gpio_direction_input(chip->base + offset);
@ -375,8 +365,8 @@ static int bcm2835_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
static struct gpio_chip bcm2835_gpio_chip = {
.label = MODULE_NAME,
.owner = THIS_MODULE,
.request = bcm2835_gpio_request,
.free = bcm2835_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.direction_input = bcm2835_gpio_direction_input,
.direction_output = bcm2835_gpio_direction_output,
.get = bcm2835_gpio_get,

14
drivers/pinctrl/intel/pinctrl-cherryview.c
View File

@ -1149,16 +1149,6 @@ static struct pinctrl_desc chv_pinctrl_desc = {
.owner = THIS_MODULE,
};
static int chv_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void chv_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static unsigned chv_gpio_offset_to_pin(struct chv_pinctrl *pctrl,
unsigned offset)
{
@ -1238,8 +1228,8 @@ static int chv_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
static const struct gpio_chip chv_gpio_chip = {
.owner = THIS_MODULE,
.request = chv_gpio_request,
.free = chv_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get_direction = chv_gpio_get_direction,
.direction_input = chv_gpio_direction_input,
.direction_output = chv_gpio_direction_output,

14
drivers/pinctrl/intel/pinctrl-intel.c
View File

@ -597,16 +597,6 @@ static const struct pinctrl_desc intel_pinctrl_desc = {
.owner = THIS_MODULE,
};
static int intel_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void intel_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int intel_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
@ -654,8 +644,8 @@ static int intel_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
static const struct gpio_chip intel_gpio_chip = {
.owner = THIS_MODULE,
.request = intel_gpio_request,
.free = intel_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.direction_input = intel_gpio_direction_input,
.direction_output = intel_gpio_direction_output,
.get = intel_gpio_get,

14
drivers/pinctrl/mediatek/pinctrl-mtk-common.c
View File

@ -723,16 +723,6 @@ static const struct pinmux_ops mtk_pmx_ops = {
.gpio_set_direction = mtk_pmx_gpio_set_direction,
};
static int mtk_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void mtk_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int mtk_gpio_direction_input(struct gpio_chip *chip,
unsigned offset)
{
@ -1005,8 +995,8 @@ static int mtk_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
static struct gpio_chip mtk_gpio_chip = {
.owner = THIS_MODULE,
.request = mtk_gpio_request,
.free = mtk_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.direction_input = mtk_gpio_direction_input,
.direction_output = mtk_gpio_direction_output,
.get = mtk_gpio_get,

18
drivers/pinctrl/nomadik/pinctrl-abx500.c
View File

@ -654,25 +654,11 @@ static inline void abx500_gpio_dbg_show_one(struct seq_file *s,
#define abx500_gpio_dbg_show NULL
#endif
static int abx500_gpio_request(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
return pinctrl_request_gpio(gpio);
}
static void abx500_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
pinctrl_free_gpio(gpio);
}
static struct gpio_chip abx500gpio_chip = {
.label = "abx500-gpio",
.owner = THIS_MODULE,
.request = abx500_gpio_request,
.free = abx500_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.direction_input = abx500_gpio_direction_input,
.get = abx500_gpio_get,
.direction_output = abx500_gpio_direction_output,

22
drivers/pinctrl/nomadik/pinctrl-nomadik.c
View File

@ -884,24 +884,6 @@ static void nmk_gpio_latent_irq_handler(struct irq_desc *desc)
/* I/O Functions */
static int nmk_gpio_request(struct gpio_chip *chip, unsigned offset)
{
/*
* Map back to global GPIO space and request muxing, the direction
* parameter does not matter for this controller.
*/
int gpio = chip->base + offset;
return pinctrl_request_gpio(gpio);
}
static void nmk_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
pinctrl_free_gpio(gpio);
}
static int nmk_gpio_make_input(struct gpio_chip *chip, unsigned offset)
{
struct nmk_gpio_chip *nmk_chip =
@ -1267,8 +1249,8 @@ static int nmk_gpio_probe(struct platform_device *dev)
spin_lock_init(&nmk_chip->lock);
chip = &nmk_chip->chip;
chip->request = nmk_gpio_request;
chip->free = nmk_gpio_free;
chip->request = gpiochip_generic_request;
chip->free = gpiochip_generic_free;
chip->direction_input = nmk_gpio_make_input;
chip->get = nmk_gpio_get_input;
chip->direction_output = nmk_gpio_make_output;

14
drivers/pinctrl/pinctrl-adi2.c
View File

@ -713,16 +713,6 @@ static struct pinctrl_desc adi_pinmux_desc = {
.owner = THIS_MODULE,
};
static int adi_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void adi_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int adi_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
struct gpio_port *port;
@ -994,8 +984,8 @@ static int adi_gpio_probe(struct platform_device *pdev)
port->chip.get = adi_gpio_get_value;
port->chip.direction_output = adi_gpio_direction_output;
port->chip.set = adi_gpio_set_value;
port->chip.request = adi_gpio_request;
port->chip.free = adi_gpio_free;
port->chip.request = gpiochip_generic_request,
port->chip.free = gpiochip_generic_free,
port->chip.to_irq = adi_gpio_to_irq;
if (pdata->port_gpio_base > 0)
port->chip.base = pdata->port_gpio_base;

14
drivers/pinctrl/pinctrl-as3722.c
View File

@ -536,21 +536,11 @@ static int as3722_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
return as3722_irq_get_virq(as_pci->as3722, offset);
}
static int as3722_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void as3722_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static const struct gpio_chip as3722_gpio_chip = {
.label = "as3722-gpio",
.owner = THIS_MODULE,
.request = as3722_gpio_request,
.free = as3722_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get = as3722_gpio_get,
.set = as3722_gpio_set,
.direction_input = as3722_gpio_direction_input,

26
drivers/pinctrl/pinctrl-at91.c
View File

@ -1277,28 +1277,6 @@ static int at91_pinctrl_remove(struct platform_device *pdev)
return 0;
}
static int at91_gpio_request(struct gpio_chip *chip, unsigned offset)
{
/*
* Map back to global GPIO space and request muxing, the direction
* parameter does not matter for this controller.
*/
int gpio = chip->base + offset;
int bank = chip->base / chip->ngpio;
dev_dbg(chip->dev, "%s:%d pio%c%d(%d)\n", __func__, __LINE__,
'A' + bank, offset, gpio);
return pinctrl_request_gpio(gpio);
}
static void at91_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
pinctrl_free_gpio(gpio);
}
static int at91_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
{
struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
@ -1684,8 +1662,8 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
/* This structure is replicated for each GPIO block allocated at probe time */
static struct gpio_chip at91_gpio_template = {
.request = at91_gpio_request,
.free = at91_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get_direction = at91_gpio_get_direction,
.direction_input = at91_gpio_direction_input,
.get = at91_gpio_get,

22
drivers/pinctrl/pinctrl-coh901.c
View File

@ -217,24 +217,6 @@ static inline struct u300_gpio *to_u300_gpio(struct gpio_chip *chip)
return container_of(chip, struct u300_gpio, chip);
}
static int u300_gpio_request(struct gpio_chip *chip, unsigned offset)
{
/*
* Map back to global GPIO space and request muxing, the direction
* parameter does not matter for this controller.
*/
int gpio = chip->base + offset;
return pinctrl_request_gpio(gpio);
}
static void u300_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
pinctrl_free_gpio(gpio);
}
static int u300_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct u300_gpio *gpio = to_u300_gpio(chip);
@ -417,8 +399,8 @@ int u300_gpio_config_set(struct gpio_chip *chip, unsigned offset,
static struct gpio_chip u300_gpio_chip = {
.label = "u300-gpio-chip",
.owner = THIS_MODULE,
.request = u300_gpio_request,
.free = u300_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get = u300_gpio_get,
.set = u300_gpio_set,
.direction_input = u300_gpio_direction_input,

14
drivers/pinctrl/pinctrl-digicolor.c
View File

@ -169,16 +169,6 @@ static struct pinmux_ops dc_pmxops = {
.gpio_request_enable = dc_pmx_request_gpio,
};
static int dc_gpio_request(struct gpio_chip *chip, unsigned gpio)
{
return pinctrl_request_gpio(chip->base + gpio);
}
static void dc_gpio_free(struct gpio_chip *chip, unsigned gpio)
{
pinctrl_free_gpio(chip->base + gpio);
}
static int dc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
struct dc_pinmap *pmap = container_of(chip, struct dc_pinmap, chip);
@ -255,8 +245,8 @@ static int dc_gpiochip_add(struct dc_pinmap *pmap, struct device_node *np)
chip->label = DRIVER_NAME;
chip->dev = pmap->dev;
chip->request = dc_gpio_request;
chip->free = dc_gpio_free;
chip->request = gpiochip_generic_request;
chip->free = gpiochip_generic_free;
chip->direction_input = dc_gpio_direction_input;
chip->direction_output = dc_gpio_direction_output;
chip->get = dc_gpio_get;

14
drivers/pinctrl/pinctrl-pistachio.c
View File

@ -1171,16 +1171,6 @@ static struct pinctrl_desc pistachio_pinctrl_desc = {
.confops = &pistachio_pinconf_ops,
};
static int pistachio_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void pistachio_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int pistachio_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
{
struct pistachio_gpio_bank *bank = gc_to_bank(chip);
@ -1332,8 +1322,8 @@ static void pistachio_gpio_irq_handler(struct irq_desc *desc)
.npins = _npins, \
.gpio_chip = { \
.label = "GPIO" #_bank, \
.request = pistachio_gpio_request, \
.free = pistachio_gpio_free, \
.request = gpiochip_generic_request, \
.free = gpiochip_generic_free, \
.get_direction = pistachio_gpio_get_direction, \
.direction_input = pistachio_gpio_direction_input, \
.direction_output = pistachio_gpio_direction_output, \

14
drivers/pinctrl/pinctrl-rockchip.c
View File

@ -1374,16 +1374,6 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
* GPIO handling
*/
static int rockchip_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void rockchip_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
{
struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
@ -1461,8 +1451,8 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
}
static const struct gpio_chip rockchip_gpiolib_chip = {
.request = rockchip_gpio_request,
.free = rockchip_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.set = rockchip_gpio_set,
.get = rockchip_gpio_get,
.direction_input = rockchip_gpio_direction_input,

14
drivers/pinctrl/pinctrl-st.c
View File

@ -742,16 +742,6 @@ static void st_gpio_direction(struct st_gpio_bank *bank,
}
}
static int st_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void st_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int st_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct st_gpio_bank *bank = gpio_chip_to_bank(chip);
@ -1490,8 +1480,8 @@ static void st_gpio_irqmux_handler(struct irq_desc *desc)
}
static struct gpio_chip st_gpio_template = {
.request = st_gpio_request,
.free = st_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get = st_gpio_get,
.set = st_gpio_set,
.direction_input = st_gpio_direction_input,

18
drivers/pinctrl/pinctrl-xway.c
View File

@ -682,28 +682,14 @@ static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val)
return 0;
}
static int xway_gpio_req(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
return pinctrl_request_gpio(gpio);
}
static void xway_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
pinctrl_free_gpio(gpio);
}
static struct gpio_chip xway_chip = {
.label = "gpio-xway",
.direction_input = xway_gpio_dir_in,
.direction_output = xway_gpio_dir_out,
.get = xway_gpio_get,
.set = xway_gpio_set,
.request = xway_gpio_req,
.free = xway_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.base = -1,
};

16
drivers/pinctrl/qcom/pinctrl-msm.c
View File

@ -458,18 +458,6 @@ static void msm_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
spin_unlock_irqrestore(&pctrl->lock, flags);
}
static int msm_gpio_request(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
return pinctrl_request_gpio(gpio);
}
static void msm_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
return pinctrl_free_gpio(gpio);
}
#ifdef CONFIG_DEBUG_FS
#include <linux/seq_file.h>
@ -527,8 +515,8 @@ static struct gpio_chip msm_gpio_template = {
.direction_output = msm_gpio_direction_output,
.get = msm_gpio_get,
.set = msm_gpio_set,
.request = msm_gpio_request,
.free = msm_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.dbg_show = msm_gpio_dbg_show,
};

14
drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
View File

@ -546,16 +546,6 @@ static void pmic_gpio_set(struct gpio_chip *chip, unsigned pin, int value)
pmic_gpio_config_set(state->ctrl, pin, &config, 1);
}
static int pmic_gpio_request(struct gpio_chip *chip, unsigned base)
{
return pinctrl_request_gpio(chip->base + base);
}
static void pmic_gpio_free(struct gpio_chip *chip, unsigned base)
{
pinctrl_free_gpio(chip->base + base);
}
static int pmic_gpio_of_xlate(struct gpio_chip *chip,
const struct of_phandle_args *gpio_desc,
u32 *flags)
@ -595,8 +585,8 @@ static const struct gpio_chip pmic_gpio_gpio_template = {
.direction_output = pmic_gpio_direction_output,
.get = pmic_gpio_get,
.set = pmic_gpio_set,
.request = pmic_gpio_request,
.free = pmic_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.of_xlate = pmic_gpio_of_xlate,
.to_irq = pmic_gpio_to_irq,
.dbg_show = pmic_gpio_dbg_show,

14
drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
View File

@ -604,16 +604,6 @@ static void pmic_mpp_set(struct gpio_chip *chip, unsigned pin, int value)
pmic_mpp_config_set(state->ctrl, pin, &config, 1);
}
static int pmic_mpp_request(struct gpio_chip *chip, unsigned base)
{
return pinctrl_request_gpio(chip->base + base);
}
static void pmic_mpp_free(struct gpio_chip *chip, unsigned base)
{
pinctrl_free_gpio(chip->base + base);
}
static int pmic_mpp_of_xlate(struct gpio_chip *chip,
const struct of_phandle_args *gpio_desc,
u32 *flags)
@ -653,8 +643,8 @@ static const struct gpio_chip pmic_mpp_gpio_template = {
.direction_output = pmic_mpp_direction_output,
.get = pmic_mpp_get,
.set = pmic_mpp_set,
.request = pmic_mpp_request,
.free = pmic_mpp_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.of_xlate = pmic_mpp_of_xlate,
.to_irq = pmic_mpp_to_irq,
.dbg_show = pmic_mpp_dbg_show,

14
drivers/pinctrl/samsung/pinctrl-samsung.c
View File

@ -888,19 +888,9 @@ static int samsung_pinctrl_register(struct platform_device *pdev,
return 0;
}
static int samsung_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void samsung_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static const struct gpio_chip samsung_gpiolib_chip = {
.request = samsung_gpio_request,
.free = samsung_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.set = samsung_gpio_set,
.get = samsung_gpio_get,
.direction_input = samsung_gpio_direction_input,

14
drivers/pinctrl/sunxi/pinctrl-sunxi.c
View File

@ -446,16 +446,6 @@ static const struct pinmux_ops sunxi_pmx_ops = {
.gpio_set_direction = sunxi_pmx_gpio_set_direction,
};
static int sunxi_pinctrl_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void sunxi_pinctrl_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int sunxi_pinctrl_gpio_direction_input(struct gpio_chip *chip,
unsigned offset)
{
@ -956,8 +946,8 @@ int sunxi_pinctrl_init(struct platform_device *pdev,
last_pin = pctl->desc->pins[pctl->desc->npins - 1].pin.number;
pctl->chip->owner = THIS_MODULE;
pctl->chip->request = sunxi_pinctrl_gpio_request,
pctl->chip->free = sunxi_pinctrl_gpio_free,
pctl->chip->request = gpiochip_generic_request,
pctl->chip->free = gpiochip_generic_free,
pctl->chip->direction_input = sunxi_pinctrl_gpio_direction_input,
pctl->chip->direction_output = sunxi_pinctrl_gpio_direction_output,
pctl->chip->get = sunxi_pinctrl_gpio_get,

14
drivers/pinctrl/vt8500/pinctrl-wmt.c
View File

@ -486,16 +486,6 @@ static struct pinctrl_desc wmt_desc = {
.confops = &wmt_pinconf_ops,
};
static int wmt_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
}
static void wmt_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
}
static int wmt_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
{
struct wmt_pinctrl_data *data = dev_get_drvdata(chip->dev);
@ -560,8 +550,8 @@ static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
static struct gpio_chip wmt_gpio_chip = {
.label = "gpio-wmt",
.owner = THIS_MODULE,
.request = wmt_gpio_request,
.free = wmt_gpio_free,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get_direction = wmt_gpio_get_direction,
.direction_input = wmt_gpio_direction_input,
.direction_output = wmt_gpio_direction_output,