Merge tag 'gpio-v3.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull take two of the GPIO updates:
 "Same stuff as last time, now with a fixup patch for the previous
  compile error plus I ran a few extra rounds of compile-testing.

  This is the bulk of GPIO changes for the v3.19 series:

   - A new API that allows setting more than one GPIO at the time.  This
     is implemented for the new descriptor-based API only and makes it
     possible to e.g. toggle a clock and data line at the same time, if
     the hardware can do this with a single register write.  Both
     consumers and drivers need new calls, and the core will fall back
     to driving individual lines where needed.  Implemented for the
     MPC8xxx driver initially

   - Patched the mdio-mux-gpio and the serial mctrl driver that drives
     modems to use the new multiple-setting API to set several signals
     simultaneously

   - Get rid of the global GPIO descriptor array, and instead allocate
     descriptors dynamically for each GPIO on a certain GPIO chip.  This
     moves us closer to getting rid of the limitation of using the
     global, static GPIO numberspace

   - New driver and device tree bindings for 74xx ICs

   - New driver and device tree bindings for the VF610 Vybrid

   - Support the RCAR r8a7793 and r8a7794

   - Guidelines for GPIO device tree bindings trying to get things a bit
     more strict with the advent of combined device properties

   - Suspend/resume support for the MVEBU driver

   - A slew of minor fixes and improvements"

* tag 'gpio-v3.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (33 commits)
  gpio: mcp23s08: fix up compilation error
  gpio: pl061: document gpio-ranges property for bindings file
  gpio: pl061: hook request if gpio-ranges avaiable
  gpio: mcp23s08: Add option to configure IRQ output polarity as active high
  gpio: fix deferred probe detection for legacy API
  serial: mctrl_gpio: use gpiod_set_array function
  mdio-mux-gpio: Use GPIO descriptor interface and new gpiod_set_array function
  gpio: remove const modifier from gpiod_get_direction()
  gpio: remove gpio_descs global array
  gpio: mxs: implement get_direction callback
  gpio: em: Use dynamic allocation of GPIOs
  gpio: Check if base is positive before calling gpio_is_valid()
  gpio: mcp23s08: Add simple IRQ support for SPI devices
  gpio: mcp23s08: request a shared interrupt
  gpio: mcp23s08: Do not free unrequested interrupt
  gpio: rcar: Add r8a7793 and r8a7794 support
  gpio-mpc8xxx: add mpc8xxx_gpio_set_multiple function
  gpiolib: allow simultaneous setting of multiple GPIO outputs
  gpio: mvebu: add suspend/resume support
  gpio: gpio-davinci: remove duplicate check on resource
  ..

1 files changed, 13 insertions, 24 deletions

diff --git a/drivers/net/phy/mdio-mux-gpio.c b/drivers/net/phy/mdio-mux-gpio.c
index 0966951..1eaf81e 100644
--- a/drivers/net/phy/mdio-mux-gpio.c
+++ b/drivers/net/phy/mdio-mux-gpio.c
@@ -14,13 +14,13 @@
 #include <linux/mdio-mux.h>
 #include <linux/of_gpio.h>
 
-#define DRV_VERSION "1.0"
+#define DRV_VERSION "1.1"
 #define DRV_DESCRIPTION "GPIO controlled MDIO bus multiplexer driver"
 
 #define MDIO_MUX_GPIO_MAX_BITS 8
 
 struct mdio_mux_gpio_state {
-	int gpio[MDIO_MUX_GPIO_MAX_BITS];
+	struct gpio_desc *gpio[MDIO_MUX_GPIO_MAX_BITS];
 	unsigned int num_gpios;
 	void *mux_handle;
 };
@@ -28,29 +28,23 @@ struct mdio_mux_gpio_state {
 static int mdio_mux_gpio_switch_fn(int current_child, int desired_child,
 				   void *data)
 {
-	int change;
+	int values[MDIO_MUX_GPIO_MAX_BITS];
 	unsigned int n;
 	struct mdio_mux_gpio_state *s = data;
 
 	if (current_child == desired_child)
 		return 0;
 
-	change = current_child == -1 ? -1 : current_child ^ desired_child;
-
 	for (n = 0; n < s->num_gpios; n++) {
-		if (change & 1)
-			gpio_set_value_cansleep(s->gpio[n],
-						(desired_child & 1) != 0);
-		change >>= 1;
-		desired_child >>= 1;
+		values[n] = (desired_child >> n) & 1;
 	}
+	gpiod_set_array_cansleep(s->num_gpios, s->gpio, values);
 
 	return 0;
 }
 
 static int mdio_mux_gpio_probe(struct platform_device *pdev)
 {
-	enum of_gpio_flags f;
 	struct mdio_mux_gpio_state *s;
 	int num_gpios;
 	unsigned int n;
@@ -70,22 +64,14 @@ static int mdio_mux_gpio_probe(struct platform_device *pdev)
 	s->num_gpios = num_gpios;
 
 	for (n = 0; n < num_gpios; ) {
-		int gpio = of_get_gpio_flags(pdev->dev.of_node, n, &f);
-		if (gpio < 0) {
-			r = (gpio == -ENODEV) ? -EPROBE_DEFER : gpio;
+		struct gpio_desc *gpio = gpiod_get_index(&pdev->dev, NULL, n,
+							 GPIOD_OUT_LOW);
+		if (IS_ERR(gpio)) {
+			r = PTR_ERR(gpio);
 			goto err;
 		}
 		s->gpio[n] = gpio;
-
 		n++;
-
-		r = gpio_request(gpio, "mdio_mux_gpio");
-		if (r)
-			goto err;
-
-		r = gpio_direction_output(gpio, 0);
-		if (r)
-			goto err;
 	}
 
 	r = mdio_mux_init(&pdev->dev,
@@ -98,15 +84,18 @@ static int mdio_mux_gpio_probe(struct platform_device *pdev)
 err:
 	while (n) {
 		n--;
-		gpio_free(s->gpio[n]);
+		gpiod_put(s->gpio[n]);
 	}
 	return r;
 }
 
 static int mdio_mux_gpio_remove(struct platform_device *pdev)
 {
+	unsigned int n;
 	struct mdio_mux_gpio_state *s = dev_get_platdata(&pdev->dev);
 	mdio_mux_uninit(s->mux_handle);
+	for (n = 0; n < s->num_gpios; n++)
+		gpiod_put(s->gpio[n]);
 	return 0;
 }