diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-05 09:51:41 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-05 09:51:41 -0700 |
commit | 1b2951dd99af3970c1c1a8385a12b90236b837de (patch) | |
tree | f0263fd6e22c23078b38360ea7495b1dd2d212dc /drivers/gpio/gpio-rcar.c | |
parent | 06dd3dfeea60e2a6457a6aedf97afc8e6d2ba497 (diff) | |
parent | 348f3cde84ab5b1f53cd3c0eaac1ca99a4dcb148 (diff) |
Merge tag 'gpio-v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.17 kernel cycle:
New drivers:
- Nintendo Wii GameCube GPIO, known as "Hollywood"
- Raspberry Pi mailbox service GPIO expander
- Spreadtrum main SC9860 SoC and IEC GPIO controllers.
Improvements:
- Implemented .get_multiple() callback for most of the
high-performance industrial GPIO cards for the ISA bus.
- ISA GPIO drivers now select the ISA_BUS_API instead of depending on
it. This is merged with the same pattern for all the ISA drivers
and some other Kconfig cleanups related to this.
Cleanup:
- Delete the TZ1090 GPIO drivers following the deletion of this SoC
from the ARM tree.
- Move the documentation over to driver-api to conform with the rest
of the kernel documentation build.
- Continue to make the GPIO drivers include only
<linux/gpio/driver.h> and not the too broad <linux/gpio.h> that we
want to get rid of.
- Managed to remove VLA allocation from two drivers pending more
fixes in this area for the next merge window.
- Misc janitorial fixes"
* tag 'gpio-v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (77 commits)
gpio: Add Spreadtrum PMIC EIC driver support
gpio: Add Spreadtrum EIC driver support
dt-bindings: gpio: Add Spreadtrum EIC controller documentation
gpio: ath79: Fix potential NULL dereference in ath79_gpio_probe()
pinctrl: qcom: Don't allow protected pins to be requested
gpiolib: Support 'gpio-reserved-ranges' property
gpiolib: Change bitmap allocation to kmalloc_array
gpiolib: Extract mask allocation into subroutine
dt-bindings: gpio: Add a gpio-reserved-ranges property
gpio: mockup: fix a potential crash when creating debugfs entries
gpio: pca953x: add compatibility for pcal6524 and pcal9555a
gpio: dwapb: Add support for a bus clock
gpio: Remove VLA from xra1403 driver
gpio: Remove VLA from MAX3191X driver
gpio: ws16c48: Implement get_multiple callback
gpio: gpio-mm: Implement get_multiple callback
gpio: 104-idi-48: Implement get_multiple callback
gpio: 104-dio-48e: Implement get_multiple callback
gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks
gpio: pci-idio-16: Implement get_multiple callback
...
Diffstat (limited to 'drivers/gpio/gpio-rcar.c')
-rw-r--r-- | drivers/gpio/gpio-rcar.c | 60 |
1 files changed, 58 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index ebaea8b1594b..350390c0b290 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -30,6 +30,16 @@ #include <linux/spinlock.h> #include <linux/slab.h> +struct gpio_rcar_bank_info { + u32 iointsel; + u32 inoutsel; + u32 outdt; + u32 posneg; + u32 edglevel; + u32 bothedge; + u32 intmsk; +}; + struct gpio_rcar_priv { void __iomem *base; spinlock_t lock; @@ -39,6 +49,7 @@ struct gpio_rcar_priv { unsigned int irq_parent; atomic_t wakeup_path; bool has_both_edge_trigger; + struct gpio_rcar_bank_info bank_info; }; #define IOINTSEL 0x00 /* General IO/Interrupt Switching Register */ @@ -512,17 +523,62 @@ static int gpio_rcar_remove(struct platform_device *pdev) return 0; } -static int __maybe_unused gpio_rcar_suspend(struct device *dev) +#ifdef CONFIG_PM_SLEEP +static int gpio_rcar_suspend(struct device *dev) { struct gpio_rcar_priv *p = dev_get_drvdata(dev); + p->bank_info.iointsel = gpio_rcar_read(p, IOINTSEL); + p->bank_info.inoutsel = gpio_rcar_read(p, INOUTSEL); + p->bank_info.outdt = gpio_rcar_read(p, OUTDT); + p->bank_info.intmsk = gpio_rcar_read(p, INTMSK); + p->bank_info.posneg = gpio_rcar_read(p, POSNEG); + p->bank_info.edglevel = gpio_rcar_read(p, EDGLEVEL); + if (p->has_both_edge_trigger) + p->bank_info.bothedge = gpio_rcar_read(p, BOTHEDGE); + if (atomic_read(&p->wakeup_path)) device_set_wakeup_path(dev); return 0; } -static SIMPLE_DEV_PM_OPS(gpio_rcar_pm_ops, gpio_rcar_suspend, NULL); +static int gpio_rcar_resume(struct device *dev) +{ + struct gpio_rcar_priv *p = dev_get_drvdata(dev); + unsigned int offset; + u32 mask; + + for (offset = 0; offset < p->gpio_chip.ngpio; offset++) { + mask = BIT(offset); + /* I/O pin */ + if (!(p->bank_info.iointsel & mask)) { + if (p->bank_info.inoutsel & mask) + gpio_rcar_direction_output( + &p->gpio_chip, offset, + !!(p->bank_info.outdt & mask)); + else + gpio_rcar_direction_input(&p->gpio_chip, + offset); + } else { + /* Interrupt pin */ + gpio_rcar_config_interrupt_input_mode( + p, + offset, + !(p->bank_info.posneg & mask), + !(p->bank_info.edglevel & mask), + !!(p->bank_info.bothedge & mask)); + + if (p->bank_info.intmsk & mask) + gpio_rcar_write(p, MSKCLR, mask); + } + } + + return 0; +} +#endif /* CONFIG_PM_SLEEP*/ + +static SIMPLE_DEV_PM_OPS(gpio_rcar_pm_ops, gpio_rcar_suspend, gpio_rcar_resume); static struct platform_driver gpio_rcar_device_driver = { .probe = gpio_rcar_probe, |