spi: pl022: use pinctrl PM helpers

This utilize the new pinctrl core PM helpers to transition
the driver to "sleep" and "idle" states, cutting away some
boilerplate code.

Cc: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/spi/spi-pl022.c

@@ -368,11 +368,6 @@ struct pl022 {
 	resource_size_t			phybase;
 	void __iomem			*virtbase;
 	struct clk			*clk;
-	/* Two optional pin states - default & sleep */
-	struct pinctrl			*pinctrl;
-	struct pinctrl_state		*pins_default;
-	struct pinctrl_state		*pins_idle;
-	struct pinctrl_state		*pins_sleep;
 	struct spi_master		*master;
 	struct pl022_ssp_controller	*master_info;
 	/* Message per-transfer pump */
@@ -2133,32 +2128,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 	pl022->chipselects = devm_kzalloc(dev, num_cs * sizeof(int),
 					  GFP_KERNEL);
 
-	pl022->pinctrl = devm_pinctrl_get(dev);
-	if (IS_ERR(pl022->pinctrl)) {
-		status = PTR_ERR(pl022->pinctrl);
-		goto err_no_pinctrl;
-	}
-
-	pl022->pins_default = pinctrl_lookup_state(pl022->pinctrl,
-						 PINCTRL_STATE_DEFAULT);
-	/* enable pins to be muxed in and configured */
-	if (!IS_ERR(pl022->pins_default)) {
-		status = pinctrl_select_state(pl022->pinctrl,
-				pl022->pins_default);
-		if (status)
-			dev_err(dev, "could not set default pins\n");
-	} else
-		dev_err(dev, "could not get default pinstate\n");
-
-	pl022->pins_idle = pinctrl_lookup_state(pl022->pinctrl,
-					      PINCTRL_STATE_IDLE);
-	if (IS_ERR(pl022->pins_idle))
-		dev_dbg(dev, "could not get idle pinstate\n");
-
-	pl022->pins_sleep = pinctrl_lookup_state(pl022->pinctrl,
-					       PINCTRL_STATE_SLEEP);
-	if (IS_ERR(pl022->pins_sleep))
-		dev_dbg(dev, "could not get sleep pinstate\n");
+	pinctrl_pm_select_default_state(dev);
 
 	/*
 	 * Bus Number Which has been Assigned to this SSP controller
@@ -2308,7 +2278,6 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 	amba_release_regions(adev);
  err_no_ioregion:
  err_no_gpio:
- err_no_pinctrl:
 	spi_master_put(master);
 	return status;
 }
@@ -2353,39 +2322,21 @@ static void pl022_suspend_resources(struct pl022 *pl022, bool runtime)
 
 	clk_disable(pl022->clk);
 
-	pins_state = runtime ? pl022->pins_idle : pl022->pins_sleep;
-	/* Optionally let pins go into sleep states */
-	if (!IS_ERR(pins_state)) {
-		ret = pinctrl_select_state(pl022->pinctrl, pins_state);
-		if (ret)
-			dev_err(&pl022->adev->dev, "could not set %s pins\n",
-				runtime ? "idle" : "sleep");
-	}
+	if (runtime)
+		pinctrl_pm_select_idle_state(&pl022->adev->dev);
+	else
+		pinctrl_pm_select_sleep_state(&pl022->adev->dev);
 }
 
 static void pl022_resume_resources(struct pl022 *pl022, bool runtime)
 {
 	int ret;
 
-	/* Optionaly enable pins to be muxed in and configured */
 	/* First go to the default state */
-	if (!IS_ERR(pl022->pins_default)) {
-		ret = pinctrl_select_state(pl022->pinctrl, pl022->pins_default);
-		if (ret)
-			dev_err(&pl022->adev->dev,
-				"could not set default pins\n");
-	}
-
-	if (!runtime) {
+	pinctrl_pm_select_default_state(&pl022->adev->dev);
+	if (!runtime)
 		/* Then let's idle the pins until the next transfer happens */
-		if (!IS_ERR(pl022->pins_idle)) {
-			ret = pinctrl_select_state(pl022->pinctrl,
-					pl022->pins_idle);
-		if (ret)
-			dev_err(&pl022->adev->dev,
-				"could not set idle pins\n");
-		}
-	}
+		pinctrl_pm_select_idle_state(&pl022->adev->dev);
 
 	clk_enable(pl022->clk);
 }