net/mlx4_core: VFs must ignore the enable_64b_cqe_eqe module param

[cascardo/linux.git] / drivers / gpio / gpio-omap.c

diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index dfeb3a3..c57244e 100644 (file)
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1037,6 +1037,18 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
                               IRQ_NOREQUEST | IRQ_NOPROBE, 0);
 }
 
+#if defined(CONFIG_OF_GPIO)
+static inline bool omap_gpio_chip_boot_dt(struct gpio_chip *chip)
+{
+       return chip->of_node != NULL;
+}
+#else
+static inline bool omap_gpio_chip_boot_dt(struct gpio_chip *chip)
+{
+       return false;
+}
+#endif
+
 static void omap_gpio_chip_init(struct gpio_bank *bank)
 {
        int j;
@@ -1068,24 +1080,68 @@ static void omap_gpio_chip_init(struct gpio_bank *bank)
 
        gpiochip_add(&bank->chip);
 
-       for (j = 0; j < bank->width; j++) {
-               int irq = irq_create_mapping(bank->domain, j);
-               irq_set_lockdep_class(irq, &gpio_lock_class);
-               irq_set_chip_data(irq, bank);
-               if (bank->is_mpuio) {
-                       omap_mpuio_alloc_gc(bank, irq, bank->width);
-               } else {
-                       irq_set_chip_and_handler(irq, &gpio_irq_chip,
-                                                handle_simple_irq);
-                       set_irq_flags(irq, IRQF_VALID);
-               }
-       }
+       /*
+        * REVISIT these explicit calls to irq_create_mapping()
+        * to do the GPIO to IRQ domain mapping for each GPIO in
+        * the bank can be removed once all OMAP platforms have
+        * been migrated to Device Tree boot only.
+        * Since in DT boot irq_create_mapping() is called from
+        * irq_create_of_mapping() only for the GPIO lines that
+        * are used as interrupts.
+        */
+       if (!omap_gpio_chip_boot_dt(&bank->chip))
+               for (j = 0; j < bank->width; j++)
+                       irq_create_mapping(bank->domain, j);
        irq_set_chained_handler(bank->irq, gpio_irq_handler);
        irq_set_handler_data(bank->irq, bank);
 }
 
 static const struct of_device_id omap_gpio_match[];
 
+static int omap_gpio_irq_map(struct irq_domain *d, unsigned int virq,
+                            irq_hw_number_t hwirq)
+{
+       struct gpio_bank *bank = d->host_data;
+       int gpio;
+       int ret;
+
+       if (!bank)
+               return -EINVAL;
+
+       irq_set_lockdep_class(virq, &gpio_lock_class);
+       irq_set_chip_data(virq, bank);
+       if (bank->is_mpuio) {
+               omap_mpuio_alloc_gc(bank, virq, bank->width);
+       } else {
+               irq_set_chip_and_handler(virq, &gpio_irq_chip,
+                                        handle_simple_irq);
+               set_irq_flags(virq, IRQF_VALID);
+       }
+
+       /*
+        * REVISIT most GPIO IRQ chip drivers need to call
+        * gpio_request() before a GPIO line can be used as an
+        * IRQ. Ideally this should be handled by the IRQ core
+        * but until then this has to be done on a per driver
+        * basis. Remove this once this is managed by the core.
+        */
+       if (omap_gpio_chip_boot_dt(&bank->chip)) {
+               gpio = irq_to_gpio(bank, hwirq);
+               ret = gpio_request_one(gpio, GPIOF_IN, NULL);
+               if (ret) {
+                       dev_err(bank->dev, "Could not request GPIO%d\n", gpio);
+                       return ret;
+               }
+       }
+
+       return 0;
+}
+
+static struct irq_domain_ops omap_gpio_irq_ops = {
+       .xlate  = irq_domain_xlate_onetwocell,
+       .map    = omap_gpio_irq_map,
+};
+
 static int omap_gpio_probe(struct platform_device *pdev)
 {
        struct device *dev = &pdev->dev;
@@ -1151,10 +1207,10 @@ static int omap_gpio_probe(struct platform_device *pdev)
        }
 
        bank->domain = irq_domain_add_legacy(node, bank->width, irq_base,
-                                            0, &irq_domain_simple_ops, NULL);
+                                            0, &omap_gpio_irq_ops, bank);
 #else
        bank->domain = irq_domain_add_linear(node, bank->width,
-                                            &irq_domain_simple_ops, NULL);
+                                            &omap_gpio_irq_ops, bank);
 #endif
        if (!bank->domain) {
                dev_err(dev, "Couldn't register an IRQ domain\n");