[PATCH] soc: fsl: qe: Avoid using gpio_to_desc()

[Linus Walleij]

We want to get rid of the old GPIO numberspace, so instead of
calling gpio_to_desc() we get the gpio descriptor for the requested
line from the device tree directly without passing through the
GPIO numberspace, and then we get the gpiochip from the descriptor.

Cc: Bartosz Golaszewski <b...@bgdev.pl>
Cc: linux-g...@vger.kernel.org
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
---
 drivers/soc/fsl/qe/gpio.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/soc/fsl/qe/gpio.c b/drivers/soc/fsl/qe/gpio.c
index 99f7de43c3c6..cc5602b679fe 100644
--- a/drivers/soc/fsl/qe/gpio.c
+++ b/drivers/soc/fsl/qe/gpio.c
@@ -13,10 +13,8 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
-/* FIXME: needed for gpio_to_chip() get rid of this */
-#include <linux/gpio.h>
 #include <linux/slab.h>
 #include <linux/export.h>
 #include <soc/fsl/qe/qe.h>
@@ -161,6 +159,7 @@ struct qe_pin *qe_pin_request(struct device_node *np, int 
index)
        struct qe_pin *qe_pin;
        struct gpio_chip *gc;
        struct qe_gpio_chip *qe_gc;
+       struct gpio_desc *gpiod;
        int err;
        unsigned long flags;
 
@@ -170,14 +169,21 @@ struct qe_pin *qe_pin_request(struct device_node *np, int 
index)
                return ERR_PTR(-ENOMEM);
        }
 
-       err = of_get_gpio(np, index);
-       if (err < 0)
+       gpiod = fwnode_gpiod_get_index(of_fwnode_handle(np), NULL, index, 
GPIOD_ASIS, "qe");
+       if (IS_ERR(gpiod)) {
+               err = PTR_ERR(gpiod);
                goto err0;
-       gc = gpio_to_chip(err);
+       }
+       if (!gpiod) {
+               err = -EINVAL;
+               goto err0;
+       }
+       gc = gpiod_to_chip(gpiod);
        if (WARN_ON(!gc)) {
                err = -ENODEV;
                goto err0;
        }
+       gpiod_put(gpiod);
 
        if (!of_device_is_compatible(gc->of_node, "fsl,mpc8323-qe-pario-bank")) 
{
                pr_debug("%s: tried to get a non-qe pin\n", __func__);
-- 
2.34.1