gpio: kill off set_irq_flags usage

set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed as most platforms don't use probing.
There appears to be a great deal of blind copy and paste of this code.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

14 files changed, 10 insertions, 57 deletions

diff --git a/drivers/gpio/gpio-adp5588.c b/drivers/gpio/gpio-adp5588.c
index d3fe6a6776da..984186ee58a0 100644
--- a/drivers/gpio/gpio-adp5588.c
+++ b/drivers/gpio/gpio-adp5588.c
@@ -305,15 +305,7 @@ static int adp5588_irq_setup(struct adp5588_gpio *dev)
                 irq_set_chip_and_handler(irq, &adp5588_irq_chip,
                                          handle_level_irq);
                 irq_set_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
-                /*
-                 * ARM needs us to explicitly flag the IRQ as VALID,
-                 * once we do so, it will also set the noprobe.
-                 */
-                set_irq_flags(irq, IRQF_VALID);
-#else
-                irq_set_noprobe(irq);
-#endif
+                irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE);
         }
 
         ret = request_threaded_irq(client->irq,
diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c
index 109083f65248..31b90ac15204 100644
--- a/drivers/gpio/gpio-bcm-kona.c
+++ b/drivers/gpio/gpio-bcm-kona.c
@@ -525,11 +525,7 @@ static int bcm_kona_gpio_irq_map(struct irq_domain *d, unsigned int irq,
                 return ret;
         irq_set_lockdep_class(irq, &gpio_lock_class);
         irq_set_chip_and_handler(irq, &bcm_gpio_irq_chip, handle_simple_irq);
-#ifdef CONFIG_ARM
-        set_irq_flags(irq, IRQF_VALID);
-#else
         irq_set_noprobe(irq);
-#endif
 
         return 0;
 }
@@ -644,17 +640,6 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev)
                 dev_err(dev, "Couldn't add GPIO chip -- %d\n", ret);
                 goto err_irq_domain;
         }
-        for (i = 0; i < chip->ngpio; i++) {
-                int irq = bcm_kona_gpio_to_irq(chip, i);
-                irq_set_lockdep_class(irq, &gpio_lock_class);
-                irq_set_chip_and_handler(irq, &bcm_gpio_irq_chip,
-                                         handle_simple_irq);
-#ifdef CONFIG_ARM
-                set_irq_flags(irq, IRQF_VALID);
-#else
-                irq_set_noprobe(irq);
-#endif
-        }
         for (i = 0; i < kona_gpio->num_bank; i++) {
                 bank = &kona_gpio->banks[i];
                 irq_set_chained_handler_and_data(bank->irq,
diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 7be269402baf..94b0ab709721 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -423,7 +423,6 @@ davinci_gpio_irq_map(struct irq_domain *d, unsigned int irq,
         irq_set_irq_type(irq, IRQ_TYPE_NONE);
         irq_set_chip_data(irq, (__force void *)g);
         irq_set_handler_data(irq, (void *)__gpio_mask(hw));
-        set_irq_flags(irq, IRQF_VALID);
 
         return 0;
 }
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index a77f16c8d142..6bca1e125e12 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -261,7 +261,6 @@ static int em_gio_irq_domain_map(struct irq_domain *h, unsigned int irq,
 
         irq_set_chip_data(irq, h->host_data);
         irq_set_chip_and_handler(irq, &p->irq_chip, handle_level_irq);
-        set_irq_flags(irq, IRQF_VALID); /* kill me now */
         return 0;
 }
 
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index dc0c40935940..9d90366ea259 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -236,7 +236,7 @@ static void ep93xx_gpio_init_irq(void)
              gpio_irq <= gpio_to_irq(EP93XX_GPIO_LINE_MAX_IRQ); ++gpio_irq) {
                 irq_set_chip_and_handler(gpio_irq, &ep93xx_gpio_irq_chip,
                                          handle_level_irq);
-                set_irq_flags(gpio_irq, IRQF_VALID);
+                irq_clear_status_flags(gpio_irq, IRQ_NOREQUEST);
         }
 
         irq_set_chained_handler(IRQ_EP93XX_GPIO_AB,
diff --git a/drivers/gpio/gpio-grgpio.c b/drivers/gpio/gpio-grgpio.c
index 0a8f7617e72e..77053d61466e 100644
--- a/drivers/gpio/gpio-grgpio.c
+++ b/drivers/gpio/gpio-grgpio.c
@@ -281,12 +281,7 @@ static int grgpio_irq_map(struct irq_domain *d, unsigned int irq,
         irq_set_chip_data(irq, priv);
         irq_set_chip_and_handler(irq, &grgpio_irq_chip,
                                  handle_simple_irq);
-        irq_clear_status_flags(irq, IRQ_NOREQUEST);
-#ifdef CONFIG_ARM
-        set_irq_flags(irq, IRQF_VALID);
-#else
         irq_set_noprobe(irq);
-#endif
 
         return ret;
 }
@@ -301,9 +296,6 @@ static void grgpio_irq_unmap(struct irq_domain *d, unsigned int irq)
         int ngpio = priv->bgc.gc.ngpio;
         int i;
 
-#ifdef CONFIG_ARM
-        set_irq_flags(irq, 0);
-#endif
         irq_set_chip_and_handler(irq, NULL, NULL);
         irq_set_chip_data(irq, NULL);
 
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 2fc7ff852d16..73db7ecd7ffd 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -507,11 +507,7 @@ static int mcp23s08_irq_setup(struct mcp23s08 *mcp)
                 irq_set_chip_data(irq, mcp);
                 irq_set_chip(irq, &mcp23s08_irq_chip);
                 irq_set_nested_thread(irq, true);
-#ifdef CONFIG_ARM
-                set_irq_flags(irq, IRQF_VALID);
-#else
                 irq_set_noprobe(irq);
-#endif
         }
         return 0;
 }
diff --git a/drivers/gpio/gpio-msm-v2.c b/drivers/gpio/gpio-msm-v2.c
index 1f0fb19209bf..d2012cfb5571 100644
--- a/drivers/gpio/gpio-msm-v2.c
+++ b/drivers/gpio/gpio-msm-v2.c
@@ -355,7 +355,6 @@ static int msm_gpio_irq_domain_map(struct irq_domain *d, unsigned int irq,
         irq_set_lockdep_class(irq, &msm_gpio_lock_class);
         irq_set_chip_and_handler(irq, &msm_gpio_irq_chip,
                         handle_level_irq);
-        set_irq_flags(irq, IRQF_VALID);
 
         return 0;
 }
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index cdbbcf0faf9d..55a11de3d5b7 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -524,7 +524,7 @@ static int pxa_irq_domain_map(struct irq_domain *d, unsigned int irq,
 {
         irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
                                  handle_edge_irq);
-        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+        irq_set_noprobe(irq);
         return 0;
 }
 
@@ -643,20 +643,20 @@ static int pxa_gpio_probe(struct platform_device *pdev)
                         irq = gpio_to_irq(0);
                         irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
                                                  handle_edge_irq);
-                        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+                        irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
                 }
                 if (irq1 > 0) {
                         irq = gpio_to_irq(1);
                         irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
                                                  handle_edge_irq);
-                        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+                        irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
                 }
 
                 for (irq  = gpio_to_irq(gpio_offset);
                         irq <= gpio_to_irq(pxa_last_gpio); irq++) {
                         irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
                                                  handle_edge_irq);
-                        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+                        irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
                 }
         }
 
diff --git a/drivers/gpio/gpio-sa1100.c b/drivers/gpio/gpio-sa1100.c
index e847a4cf9326..67bd2f5d89e8 100644
--- a/drivers/gpio/gpio-sa1100.c
+++ b/drivers/gpio/gpio-sa1100.c
@@ -155,7 +155,7 @@ static int sa1100_gpio_irqdomain_map(struct irq_domain *d,
 {
         irq_set_chip_and_handler(irq, &sa1100_gpio_irq_chip,
                                  handle_edge_irq);
-        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+        irq_set_noprobe(irq);
 
         return 0;
 }
diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c
index 18579ac65b2b..55e47828ddfc 100644
--- a/drivers/gpio/gpio-sta2x11.c
+++ b/drivers/gpio/gpio-sta2x11.c
@@ -346,7 +346,7 @@ static void gsta_alloc_irq_chip(struct gsta_gpio *chip)
                         i = chip->irq_base + j;
                         irq_set_chip_and_handler(i, &ct->chip, ct->handler);
                         irq_set_chip_data(i, gc);
-                        irq_modify_status(i, IRQ_NOREQUEST | IRQ_NOPROBE, 0);
+                        irq_clear_status_flags(i, IRQ_NOREQUEST | IRQ_NOPROBE);
                 }
                 gc->irq_cnt = i - gc->irq_base;
         }
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 530b27f9d66f..9b14aafb576d 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -507,7 +507,6 @@ static int tegra_gpio_probe(struct platform_device *pdev)
                 irq_set_chip_data(irq, bank);
                 irq_set_chip_and_handler(irq, &tegra_gpio_irq_chip,
                                          handle_simple_irq);
-                set_irq_flags(irq, IRQF_VALID);
         }
 
         for (i = 0; i < tegra_gpio_bank_count; i++) {
diff --git a/drivers/gpio/gpio-timberdale.c b/drivers/gpio/gpio-timberdale.c
index ac53ff0a8086..5a492054589f 100644
--- a/drivers/gpio/gpio-timberdale.c
+++ b/drivers/gpio/gpio-timberdale.c
@@ -295,9 +295,7 @@ static int timbgpio_probe(struct platform_device *pdev)
                 irq_set_chip_and_handler(tgpio->irq_base + i,
                         &timbgpio_irqchip, handle_simple_irq);
                 irq_set_chip_data(tgpio->irq_base + i, tgpio);
-#ifdef CONFIG_ARM
-                set_irq_flags(tgpio->irq_base + i, IRQF_VALID | IRQF_PROBE);
-#endif
+                irq_clear_status_flags(tgpio->irq_base + i, IRQ_NOREQUEST | IRQ_NOPROBE);
         }
 
         irq_set_chained_handler_and_data(irq, timbgpio_irq, tgpio);
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index b7e24780683a..9312bbcb19b9 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -486,11 +486,8 @@ static int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
         /* Chips that can sleep need nested thread handlers */
         if (chip->can_sleep && !chip->irq_not_threaded)
                 irq_set_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
-        set_irq_flags(irq, IRQF_VALID);
-#else
         irq_set_noprobe(irq);
-#endif
+
         /*
          * No set-up of the hardware will happen if IRQ_TYPE_NONE
          * is passed as default type.
@@ -505,9 +502,6 @@ static void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq)
 {
         struct gpio_chip *chip = d->host_data;
 
-#ifdef CONFIG_ARM
-        set_irq_flags(irq, 0);
-#endif
         if (chip->can_sleep)
                 irq_set_nested_thread(irq, 0);
         irq_set_chip_and_handler(irq, NULL, NULL);