Commit 7a6396d9 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

greybus: gpio: use bundle device for error messages 



Use the bundle device directly in gpio error messages instead of the
gpio device, as they are the same pointer.  This will make future gpio
api changes much easier to handle.

Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
Reviewed-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 6743a6fd

drivers/staging/greybus/gpio.c

+25 −22
Original line number Diff line number Diff line
@@ -77,6 +77,7 @@ static int gb_gpio_activate_operation(struct gb_gpio_controller *ggc, u8 which) 
static void gb_gpio_deactivate_operation(struct gb_gpio_controller *ggc,

					u8 which)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_deactivate_request request;

	int ret;
@@ -84,8 +85,7 @@ static void gb_gpio_deactivate_operation(struct gb_gpio_controller *ggc, 
	ret = gb_operation_sync(ggc->connection, GB_GPIO_TYPE_DEACTIVATE,

				 &request, sizeof(request), NULL, 0);

	if (ret) {

		dev_err(ggc->chip.dev, "failed to deactivate gpio %u\n",

			which);

		dev_err(dev, "failed to deactivate gpio %u\n", which);

		return;

	}
@@ -95,6 +95,7 @@ static void gb_gpio_deactivate_operation(struct gb_gpio_controller *ggc, 
static int gb_gpio_get_direction_operation(struct gb_gpio_controller *ggc,

					u8 which)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_get_direction_request request;

	struct gb_gpio_get_direction_response response;

	int ret;
@@ -109,8 +110,7 @@ static int gb_gpio_get_direction_operation(struct gb_gpio_controller *ggc, 


	direction = response.direction;

	if (direction && direction != 1) {

		dev_warn(ggc->chip.dev,

			 "gpio %u direction was %u (should be 0 or 1)\n",

		dev_warn(dev, "gpio %u direction was %u (should be 0 or 1)\n",

			 which, direction);

	}

	ggc->lines[which].direction = direction ? 1 : 0;
@@ -149,6 +149,7 @@ static int gb_gpio_direction_out_operation(struct gb_gpio_controller *ggc, 
static int gb_gpio_get_value_operation(struct gb_gpio_controller *ggc,

					u8 which)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_get_value_request request;

	struct gb_gpio_get_value_response response;

	int ret;
@@ -159,15 +160,13 @@ static int gb_gpio_get_value_operation(struct gb_gpio_controller *ggc, 
				&request, sizeof(request),

				&response, sizeof(response));

	if (ret) {

		dev_err(ggc->chip.dev, "failed to get value of gpio %u\n",

			which);

		dev_err(dev, "failed to get value of gpio %u\n", which);

		return ret;

	}



	value = response.value;

	if (value && value != 1) {

		dev_warn(ggc->chip.dev,

			 "gpio %u value was %u (should be 0 or 1)\n",

		dev_warn(dev, "gpio %u value was %u (should be 0 or 1)\n",

			 which, value);

	}

	ggc->lines[which].value = value ? 1 : 0;
@@ -177,12 +176,13 @@ static int gb_gpio_get_value_operation(struct gb_gpio_controller *ggc, 
static void gb_gpio_set_value_operation(struct gb_gpio_controller *ggc,

					u8 which, bool value_high)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_set_value_request request;

	int ret;



	if (ggc->lines[which].direction == 1) {

		dev_warn(ggc->chip.dev,

			 "refusing to set value of input gpio %u\n", which);

		dev_warn(dev, "refusing to set value of input gpio %u\n",

			 which);

		return;

	}
@@ -191,8 +191,7 @@ static void gb_gpio_set_value_operation(struct gb_gpio_controller *ggc, 
	ret = gb_operation_sync(ggc->connection, GB_GPIO_TYPE_SET_VALUE,

				&request, sizeof(request), NULL, 0);

	if (ret) {

		dev_err(ggc->chip.dev, "failed to set value of gpio %u\n",

			which);

		dev_err(dev, "failed to set value of gpio %u\n", which);

		return;

	}
@@ -216,6 +215,7 @@ static int gb_gpio_set_debounce_operation(struct gb_gpio_controller *ggc, 


static void _gb_gpio_irq_mask(struct gb_gpio_controller *ggc, u8 hwirq)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_irq_mask_request request;

	int ret;
@@ -224,11 +224,12 @@ static void _gb_gpio_irq_mask(struct gb_gpio_controller *ggc, u8 hwirq) 
				GB_GPIO_TYPE_IRQ_MASK,

				&request, sizeof(request), NULL, 0);

	if (ret)

		dev_err(ggc->chip.dev, "failed to mask irq: %d\n", ret);

		dev_err(dev, "failed to mask irq: %d\n", ret);

}



static void _gb_gpio_irq_unmask(struct gb_gpio_controller *ggc, u8 hwirq)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_irq_unmask_request request;

	int ret;
@@ -237,12 +238,13 @@ static void _gb_gpio_irq_unmask(struct gb_gpio_controller *ggc, u8 hwirq) 
				GB_GPIO_TYPE_IRQ_UNMASK,

				&request, sizeof(request), NULL, 0);

	if (ret)

		dev_err(ggc->chip.dev, "failed to unmask irq: %d\n", ret);

		dev_err(dev, "failed to unmask irq: %d\n", ret);

}



static void _gb_gpio_irq_set_type(struct gb_gpio_controller *ggc,

					u8 hwirq, u8 type)

{

	struct device *dev = &ggc->connection->bundle->dev;

	struct gb_gpio_irq_type_request request;

	int ret;
@@ -253,7 +255,7 @@ static void _gb_gpio_irq_set_type(struct gb_gpio_controller *ggc, 
				GB_GPIO_TYPE_IRQ_TYPE,

				&request, sizeof(request), NULL, 0);

	if (ret)

		dev_err(ggc->chip.dev, "failed to set irq type: %d\n", ret);

		dev_err(dev, "failed to set irq type: %d\n", ret);

}



static void gb_gpio_irq_mask(struct irq_data *d)
@@ -281,6 +283,7 @@ static int gb_gpio_irq_set_type(struct irq_data *d, unsigned int type) 
	struct gpio_chip *chip = irq_data_to_gpio_chip(d);

	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);

	struct gb_gpio_line *line = &ggc->lines[d->hwirq];

	struct device *dev = &ggc->connection->bundle->dev;

	u8 irq_type;



	switch (type) {
@@ -303,7 +306,7 @@ static int gb_gpio_irq_set_type(struct irq_data *d, unsigned int type) 
		irq_type = GB_GPIO_IRQ_TYPE_LEVEL_HIGH;

		break;

	default:

		dev_err(chip->dev, "unsupported irq type: %u\n", type);

		dev_err(dev, "unsupported irq type: %u\n", type);

		return -EINVAL;

	}
@@ -346,6 +349,7 @@ static void gb_gpio_irq_bus_sync_unlock(struct irq_data *d) 
static int gb_gpio_request_recv(u8 type, struct gb_operation *op)

{

	struct gb_connection *connection = op->connection;

	struct device *dev = &connection->bundle->dev;

	struct gb_gpio_controller *ggc = connection->private;

	struct gb_message *request;

	struct gb_gpio_irq_event_request *event;
@@ -353,33 +357,32 @@ static int gb_gpio_request_recv(u8 type, struct gb_operation *op) 
	struct irq_desc *desc;



	if (type != GB_GPIO_TYPE_IRQ_EVENT) {

		dev_err(&connection->bundle->dev,

			"unsupported unsolicited request: %u\n", type);

		dev_err(dev, "unsupported unsolicited request: %u\n", type);

		return -EINVAL;

	}



	request = op->request;



	if (request->payload_size < sizeof(*event)) {

		dev_err(ggc->chip.dev, "short event received (%zu < %zu)\n",

		dev_err(dev, "short event received (%zu < %zu)\n",

			request->payload_size, sizeof(*event));

		return -EINVAL;

	}



	event = request->payload;

	if (event->which > ggc->line_max) {

		dev_err(ggc->chip.dev, "invalid hw irq: %d\n", event->which);

		dev_err(dev, "invalid hw irq: %d\n", event->which);

		return -EINVAL;

	}



	irq = irq_find_mapping(ggc->irqdomain, event->which);

	if (!irq) {

		dev_err(ggc->chip.dev, "failed to find IRQ\n");

		dev_err(dev, "failed to find IRQ\n");

		return -EINVAL;

	}

	desc = irq_to_desc(irq);

	if (!desc) {

		dev_err(ggc->chip.dev, "failed to look up irq\n");

		dev_err(dev, "failed to look up irq\n");

		return -EINVAL;

	}

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