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| author | Felix Fietkau <nbd@openwrt.org> | 2009-10-11 19:50:16 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2009-10-11 19:50:16 +0000 |
| commit | 9ae6129829a683f36dee5e7651714700e47f26bc (patch) | |
| tree | 6557619d3df61be7902c59904fbc3bdf1c997e0a /target/linux/atheros/patches-2.6.30/100-board.patch | |
| parent | d06c15c265e9d3b91763005a827c9bb722f9b425 (diff) | |
| download | mtk-20170518-9ae6129829a683f36dee5e7651714700e47f26bc.zip mtk-20170518-9ae6129829a683f36dee5e7651714700e47f26bc.tar.gz mtk-20170518-9ae6129829a683f36dee5e7651714700e47f26bc.tar.bz2 | |
atheros: leave the gpio interrupts alone when user space changes the gpio input settings, fixes #4493
SVN-Revision: 18036
Diffstat (limited to 'target/linux/atheros/patches-2.6.30/100-board.patch')
| -rw-r--r-- | target/linux/atheros/patches-2.6.30/100-board.patch | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/target/linux/atheros/patches-2.6.30/100-board.patch b/target/linux/atheros/patches-2.6.30/100-board.patch index 4367ce4..5f51293 100644 --- a/target/linux/atheros/patches-2.6.30/100-board.patch +++ b/target/linux/atheros/patches-2.6.30/100-board.patch @@ -2105,7 +2105,7 @@ + --- /dev/null +++ b/arch/mips/ar231x/ar2315.c -@@ -0,0 +1,643 @@ +@@ -0,0 +1,658 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive @@ -2163,6 +2163,10 @@ + if (!pend) + ar231x_write_reg(AR2315_ISR, AR2315_ISR_GPIO); + ++ /* Enable interrupt with edge detection */ ++ if ((ar231x_read_reg(AR2315_GPIO_CR) & AR2315_GPIO_CR_M(bit)) != AR2315_GPIO_CR_I(bit)) ++ return; ++ + if (bit >= 0) + do_IRQ(AR531X_GPIO_IRQ_BASE + bit); +} @@ -2220,14 +2224,24 @@ +{ + unsigned int gpio = irq - AR531X_GPIO_IRQ_BASE; + -+ /* reconfigure GPIO line as input */ -+ ar231x_mask_reg(AR2315_GPIO_CR, AR2315_GPIO_CR_M(gpio), AR2315_GPIO_CR_I(gpio)); -+ + /* Enable interrupt with edge detection */ ++ if ((ar231x_read_reg(AR2315_GPIO_CR) & AR2315_GPIO_CR_M(gpio)) != AR2315_GPIO_CR_I(gpio)) ++ return; ++ + gpiointmask |= (1 << gpio); + ar2315_set_gpiointmask(gpio, 3); +} + ++static unsigned int ar2315_gpio_intr_startup(unsigned int irq) ++{ ++ unsigned int gpio = irq - AR531X_GPIO_IRQ_BASE; ++ ++ /* reconfigure GPIO line as input */ ++ ar231x_mask_reg(AR2315_GPIO_CR, AR2315_GPIO_CR_M(gpio), AR2315_GPIO_CR_I(gpio)); ++ ar2315_gpio_intr_enable(irq); ++ return 0; ++} ++ +static void ar2315_gpio_intr_disable(unsigned int irq) +{ + unsigned int gpio = irq - AR531X_GPIO_IRQ_BASE; @@ -2246,6 +2260,7 @@ + +static struct irq_chip ar2315_gpio_intr_controller = { + .typename = "AR2315-GPIO", ++ .startup = ar2315_gpio_intr_startup, + .ack = ar2315_gpio_intr_disable, + .mask_ack = ar2315_gpio_intr_disable, + .mask = ar2315_gpio_intr_disable, |