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| author | Tomasz Figa | 2012-10-11 10:11:18 +0200 |
|---|---|---|
| committer | Linus Walleij | 2012-10-15 09:10:12 +0200 |
| commit | a04b07c0fc4d63e3fb9fea84d48a177ac5bd9164 (patch) | |
| tree | 38504cfbceac9b3ed6359caded76a626b633fa12 /drivers/pinctrl/pinctrl-samsung.h | |
| parent | pinctrl: samsung: Use one GPIO chip per pin bank (diff) | |
| download | kernel-qcow2-linux-a04b07c0fc4d63e3fb9fea84d48a177ac5bd9164.tar.gz kernel-qcow2-linux-a04b07c0fc4d63e3fb9fea84d48a177ac5bd9164.tar.xz kernel-qcow2-linux-a04b07c0fc4d63e3fb9fea84d48a177ac5bd9164.zip | |
pinctrl: samsung: Use per-bank IRQ domain for wake-up interrupts
This patch reworks wake-up interrupt handling in pinctrl-exynos driver,
so each pin bank, which provides wake-up interrupts, has its own IRQ
domain.
Information about whether given pin bank provides wake-up interrupts,
how many and whether they are separate or muxed are parsed from device
tree.
It gives following advantages:
- interrupts can be specified in device tree in a more readable way,
e.g. :
device {
/* ... */
interrupt-parent = <&gpx2>;
interrupts = <4 0>;
/* ... */
};
- the amount and layout of interrupts is not hardcoded in the code
anymore, but defined in SoC-specific structure
- bank and pin of each wake-up interrupt can be easily identified, to
allow operations, such as setting the pin to EINT function, from
irq_set_type() callback
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-samsung.h')
| -rw-r--r-- | drivers/pinctrl/pinctrl-samsung.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/pinctrl/pinctrl-samsung.h b/drivers/pinctrl/pinctrl-samsung.h index dac40ffd5e67..0670d9ea43fa 100644 --- a/drivers/pinctrl/pinctrl-samsung.h +++ b/drivers/pinctrl/pinctrl-samsung.h @@ -66,6 +66,7 @@ enum pincfg_type { * @EINT_TYPE_NONE: bank does not support external interrupts * @EINT_TYPE_GPIO: bank supportes external gpio interrupts * @EINT_TYPE_WKUP: bank supportes external wakeup interrupts + * @EINT_TYPE_WKUP_MUX: bank supports multiplexed external wakeup interrupts * * Samsung GPIO controller groups all the available pins into banks. The pins * in a pin bank can support external gpio interrupts or external wakeup @@ -78,6 +79,7 @@ enum eint_type { EINT_TYPE_NONE, EINT_TYPE_GPIO, EINT_TYPE_WKUP, + EINT_TYPE_WKUP_MUX, }; /* maximum length of a pin in pin descriptor (example: "gpa0-0") */ @@ -143,7 +145,6 @@ struct samsung_pin_bank { * @nr_banks: number of pin banks. * @base: starting system wide pin number. * @nr_pins: number of pins supported by the controller. - * @nr_wint: number of external wakeup interrupts supported. * @geint_con: offset of the ext-gpio controller registers. * @geint_mask: offset of the ext-gpio interrupt mask registers. * @geint_pend: offset of the ext-gpio interrupt pending registers. @@ -163,7 +164,6 @@ struct samsung_pin_ctrl { u32 base; u32 nr_pins; - u32 nr_wint; u32 geint_con; u32 geint_mask; @@ -206,8 +206,6 @@ struct samsung_pinctrl_drv_data { unsigned int nr_groups; const struct samsung_pmx_func *pmx_functions; unsigned int nr_functions; - - struct irq_domain *wkup_irqd; }; /** |