1 files changed, 0 insertions, 146 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0010-pinctrl-bcm2835-Fix-interrupt-handling-for-GPIOs-28-.patch b/target/linux/brcm2708/patches-4.4/0010-pinctrl-bcm2835-Fix-interrupt-handling-for-GPIOs-28-.patch
deleted file mode 100644
index c9c392772b..0000000000
--- a/target/linux/brcm2708/patches-4.4/0010-pinctrl-bcm2835-Fix-interrupt-handling-for-GPIOs-28-.patch
+++ /dev/null
@@ -1,146 +0,0 @@
-From c51d537a465398bcbb03851a7f1c81b5324ee819 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Tue, 24 Feb 2015 13:40:50 +0000
-Subject: [PATCH] pinctrl-bcm2835: Fix interrupt handling for GPIOs 28-31 and
- 46-53
-
-Contrary to the documentation, the BCM2835 GPIO controller actually has
-four interrupt lines - one each for the three IRQ groups and one common. Rather
-confusingly, the GPIO interrupt groups don't correspond directly with the GPIO
-control banks. Instead, GPIOs 0-27 generate IRQ GPIO0, 28-45 GPIO1 and
-46-53 GPIO2.
-
-Awkwardly, the GPIOS for IRQ GPIO1 straddle two 32-entry GPIO banks, so it is
-cleaner to split out a function to process the interrupts for a single GPIO
-bank.
-
-This bug has only just been observed because GPIOs above 27 can only be
-accessed on an old Raspberry Pi with the optional P5 header fitted, where
-the pins are often used for I2S instead.
----
- drivers/pinctrl/bcm/pinctrl-bcm2835.c | 51 ++++++++++++++++++++++++++---------
- 1 file changed, 39 insertions(+), 12 deletions(-)
-
---- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
-+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
-@@ -47,6 +47,7 @@
- #define MODULE_NAME "pinctrl-bcm2835"
- #define BCM2835_NUM_GPIOS 54
- #define BCM2835_NUM_BANKS 2
-+#define BCM2835_NUM_IRQS  3
- 
- #define BCM2835_PIN_BITMAP_SZ \
- 	DIV_ROUND_UP(BCM2835_NUM_GPIOS, sizeof(unsigned long) * 8)
-@@ -88,13 +89,13 @@ enum bcm2835_pinconf_pull {
- 
- struct bcm2835_gpio_irqdata {
- 	struct bcm2835_pinctrl *pc;
--	int bank;
-+	int irqgroup;
- };
- 
- struct bcm2835_pinctrl {
- 	struct device *dev;
- 	void __iomem *base;
--	int irq[BCM2835_NUM_BANKS];
-+	int irq[BCM2835_NUM_IRQS];
- 
- 	/* note: locking assumes each bank will have its own unsigned long */
- 	unsigned long enabled_irq_map[BCM2835_NUM_BANKS];
-@@ -105,7 +106,7 @@ struct bcm2835_pinctrl {
- 	struct gpio_chip gpio_chip;
- 	struct pinctrl_gpio_range gpio_range;
- 
--	struct bcm2835_gpio_irqdata irq_data[BCM2835_NUM_BANKS];
-+	struct bcm2835_gpio_irqdata irq_data[BCM2835_NUM_IRQS];
- 	spinlock_t irq_lock[BCM2835_NUM_BANKS];
- };
- 
-@@ -378,17 +379,16 @@ static struct gpio_chip bcm2835_gpio_chi
- 	.can_sleep = false,
- };
- 
--static irqreturn_t bcm2835_gpio_irq_handler(int irq, void *dev_id)
-+static int bcm2835_gpio_irq_handle_bank(struct bcm2835_pinctrl *pc,
-+					unsigned int bank, u32 mask)
- {
--	struct bcm2835_gpio_irqdata *irqdata = dev_id;
--	struct bcm2835_pinctrl *pc = irqdata->pc;
--	int bank = irqdata->bank;
- 	unsigned long events;
- 	unsigned offset;
- 	unsigned gpio;
- 	unsigned int type;
- 
- 	events = bcm2835_gpio_rd(pc, GPEDS0 + bank * 4);
-+	events &= mask;
- 	events &= pc->enabled_irq_map[bank];
- 	for_each_set_bit(offset, &events, 32) {
- 		gpio = (32 * bank) + offset;
-@@ -396,7 +396,30 @@ static irqreturn_t bcm2835_gpio_irq_hand
- 
- 		generic_handle_irq(irq_linear_revmap(pc->irq_domain, gpio));
- 	}
--	return events ? IRQ_HANDLED : IRQ_NONE;
-+
-+	return (events != 0);
-+}
-+
-+static irqreturn_t bcm2835_gpio_irq_handler(int irq, void *dev_id)
-+{
-+	struct bcm2835_gpio_irqdata *irqdata = dev_id;
-+	struct bcm2835_pinctrl *pc = irqdata->pc;
-+	int handled = 0;
-+
-+	switch (irqdata->irqgroup) {
-+	case 0: /* IRQ0 covers GPIOs 0-27 */
-+		handled = bcm2835_gpio_irq_handle_bank(pc, 0, 0x0fffffff);
-+		break;
-+	case 1: /* IRQ1 covers GPIOs 28-45 */
-+		handled = bcm2835_gpio_irq_handle_bank(pc, 0, 0xf0000000) |
-+			  bcm2835_gpio_irq_handle_bank(pc, 1, 0x00003fff);
-+		break;
-+	case 2: /* IRQ2 covers GPIOs 46-53 */
-+		handled = bcm2835_gpio_irq_handle_bank(pc, 1, 0x003fc000);
-+		break;
-+	}
-+
-+	return handled ? IRQ_HANDLED : IRQ_NONE;
- }
- 
- static inline void __bcm2835_gpio_irq_config(struct bcm2835_pinctrl *pc,
-@@ -985,8 +1008,6 @@ static int bcm2835_pinctrl_probe(struct
- 	for (i = 0; i < BCM2835_NUM_BANKS; i++) {
- 		unsigned long events;
- 		unsigned offset;
--		int len;
--		char *name;
- 
- 		/* clear event detection flags */
- 		bcm2835_gpio_wr(pc, GPREN0 + i * 4, 0);
-@@ -1001,10 +1022,15 @@ static int bcm2835_pinctrl_probe(struct
- 		for_each_set_bit(offset, &events, 32)
- 			bcm2835_gpio_wr(pc, GPEDS0 + i * 4, BIT(offset));
- 
-+		spin_lock_init(&pc->irq_lock[i]);
-+	}
-+
-+	for (i = 0; i < BCM2835_NUM_IRQS; i++) {
-+		int len;
-+		char *name;
- 		pc->irq[i] = irq_of_parse_and_map(np, i);
- 		pc->irq_data[i].pc = pc;
--		pc->irq_data[i].bank = i;
--		spin_lock_init(&pc->irq_lock[i]);
-+		pc->irq_data[i].irqgroup = i;
- 
- 		len = strlen(dev_name(pc->dev)) + 16;
- 		name = devm_kzalloc(pc->dev, len, GFP_KERNEL);
-@@ -1062,6 +1088,7 @@ static struct platform_driver bcm2835_pi
- 	.remove = bcm2835_pinctrl_remove,
- 	.driver = {
- 		.name = MODULE_NAME,
-+		.owner = THIS_MODULE,
- 		.of_match_table = bcm2835_pinctrl_match,
- 	},
- };