3  * Core driver for the pin muxing portions of the pin control subsystem
74  * pinmux_can_be_used_for_gpio() - check if a specific pin
77  * @pctldev: the associated pin controller device
78  * @pin: the pin number in the global pin space
83 bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned pin)  in pinmux_can_be_used_for_gpio()  argument
85 	struct pin_desc *desc = pin_desc_get(pctldev, pin);  in pinmux_can_be_used_for_gpio()
88 	/* Can't inspect pin, assume it can be used */  in pinmux_can_be_used_for_gpio()
99  * pin_request() - request a single pin to be muxed in, typically for GPIO
100  * @pctldev: the associated pin controller device
101  * @pin: the pin number in the global pin space
102  * @owner: a representation of the owner of this pin; typically the device
104  * @gpio_range: the range matching the GPIO pin if this is a request for a
105  *	single GPIO pin
108 		       int pin, const char *owner,  in pin_request()
115 	desc = pin_desc_get(pctldev, pin);  in pin_request()
118 			"pin %d is not registered so it cannot be requested\n",  in pin_request()
119 			pin);  in pin_request()
123 	dev_dbg(pctldev->dev, "request pin %d (%s) for %s\n",  in pin_request()
124 		pin, desc->name, owner);  in pin_request()
129 			"pin %s already requested by %s; cannot claim for %s\n",  in pin_request()
136 			"pin %s already requested by %s; cannot claim for %s\n",  in pin_request()
151 	/* Let each pin increase references to this module */  in pin_request()
154 			"could not increase module refcount for pin %d\n",  in pin_request()
155 			pin);  in pin_request()
161 	 * If there is no kind of request function for the pin we just assume  in pin_request()
165 		/* This requests and enables a single GPIO pin */  in pin_request()
166 		status = ops->gpio_request_enable(pctldev, gpio_range, pin);  in pin_request()
168 		status = ops->request(pctldev, pin);  in pin_request()
173 		dev_err(pctldev->dev, "request() failed for pin %d\n", pin);  in pin_request()
189 		dev_err(pctldev->dev, "pin-%d (%s) status %d\n",  in pin_request()
190 			pin, owner, status);  in pin_request()
196  * pin_free() - release a single muxed in pin so something else can be muxed
197  * @pctldev: pin controller device handling this pin
198  * @pin: the pin to free
199  * @gpio_range: the range matching the GPIO pin if this is a request for a
200  *	single GPIO pin
204  * once the pin is free. This is done for GPIO request functions.
206 static const char *pin_free(struct pinctrl_dev *pctldev, int pin,  in pin_free()  argument
213 	desc = pin_desc_get(pctldev, pin);  in pin_free()
216 			"pin is not registered so it cannot be freed\n");  in pin_free()
222 		 * A pin should not be freed more times than allocated.  in pin_free()
232 	 * If there is no kind of request function for the pin we just assume  in pin_free()
236 		ops->gpio_disable_free(pctldev, gpio_range, pin);  in pin_free()
238 		ops->free(pctldev, pin);  in pin_free()
255  * pinmux_request_gpio() - request pinmuxing for a GPIO pin
256  * @pctldev: pin controller device affected
257  * @pin: the pin to mux in for GPIO
263 			unsigned pin, unsigned gpio)  in pinmux_request_gpio()  argument
268 	/* Conjure some name stating what chip and pin this is taken by */  in pinmux_request_gpio()
273 	ret = pin_request(pctldev, pin, owner, range);  in pinmux_request_gpio()
281  * pinmux_free_gpio() - release a pin from GPIO muxing
282  * @pctldev: the pin controller device for the pin
283  * @pin: the affected currently GPIO-muxed in pin
286 void pinmux_free_gpio(struct pinctrl_dev *pctldev, unsigned pin,  in pinmux_free_gpio()  argument
291 	owner = pin_free(pctldev, pin, range);  in pinmux_free_gpio()
296  * pinmux_gpio_direction() - set the direction of a single muxed-in GPIO pin
297  * @pctldev: the pin controller handling this pin
299  * @pin: the affected GPIO pin in this controller
300  * @input: true if we set the pin as input, false for output
304 			  unsigned pin, bool input)  in pinmux_gpio_direction()  argument
312 		ret = ops->gpio_set_direction(pctldev, range, pin, input);  in pinmux_gpio_direction()
443 				"could not request pin %d (%s) from group %s "  in pinmux_enable_setting()
456 				 "could not get pin desc for pin %d\n",  in pinmux_enable_setting()
515 				 "could not get pin desc for pin %d\n",  in pinmux_disable_setting()
527 				 "not freeing pin %d (%s) as part of "  in pinmux_disable_setting()
585 	unsigned i, pin;  in pinmux_pins_show()  local
590 	seq_puts(s, "Pinmux settings per pin\n");  in pinmux_pins_show()
593 		 "Format: pin (name): mux_owner|gpio_owner (strict) hog?\n");  in pinmux_pins_show()
596 		"Format: pin (name): mux_owner gpio_owner hog?\n");  in pinmux_pins_show()
600 	/* The pin number can be retrived from the pin controller descriptor */  in pinmux_pins_show()
605 		pin = pctldev->desc->pins[i].number;  in pinmux_pins_show()
606 		desc = pin_desc_get(pctldev, pin);  in pinmux_pins_show()
607 		/* Skip if we cannot search the pin */  in pinmux_pins_show()
617 				seq_printf(s, "pin %d (%s): device %s%s",  in pinmux_pins_show()
618 					   pin, desc->name, desc->mux_owner,  in pinmux_pins_show()
621 				seq_printf(s, "pin %d (%s): GPIO %s",  in pinmux_pins_show()
622 					   pin, desc->name, desc->gpio_owner);  in pinmux_pins_show()
624 				seq_printf(s, "pin %d (%s): UNCLAIMED",  in pinmux_pins_show()
625 					   pin, desc->name);  in pinmux_pins_show()
628 			seq_printf(s, "pin %d (%s): %s %s%s", pin, desc->name,  in pinmux_pins_show()
636 		/* If mux: print function+group claiming the pin */  in pinmux_pins_show()
691  * @pctldev: pin controller device
701  * @pctldev: pin controller device
721  * @pctldev: pin controller device
723  * @groups: array of pin groups
724  * @num_groups: number of pin groups
749  * @pctldev: pin controller device
768  * @pctldev: pin controller device
770  * @groups: array of pin groups
771  * @num_groups: number of pin groups
772  * @data: pin controller driver specific data
811  * @pctldev: pin controller device
837  * @pctldev: pin controller device