diff options
| author | Christophe Leroy (CS GROUP) <chleroy@kernel.org> | 2026-07-29 11:56:48 +0200 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2026-07-31 17:10:14 +0530 |
| commit | ca16219e9babc874349a6ac307d56523871a9137 (patch) | |
| tree | 9e1b53cbeaed110bcc3945b5ecde8bf10bfbb67c /arch/powerpc/sysdev | |
| parent | be57ed769406eb2cafd3b98f83ffebd5f703940f (diff) | |
powerpc: implement get_direction() in cpm2
The lack of get_direction() callback in this driver causes GPIOLIB to
emit a warning. Implement it.
Fixes: e623c4303ed1 ("gpiolib: sanitize the return value of gpio_chip::get_direction()")
Signed-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/c6eb70aa0e1ba6e15f947c827006aa79edace05c.1785318836.git.chleroy@kernel.org
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/cpm_common.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index 07ea605ab0e6..b5d200e3ad68 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -181,6 +181,18 @@ static int cpm2_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio) return 0; } +static int cpm2_gpio32_get_direction(struct gpio_chip *gc, unsigned int gpio) +{ + struct cpm2_gpio32_chip *cpm2_gc = gpiochip_get_data(gc); + struct cpm2_ioports __iomem *iop = cpm2_gc->regs; + u32 pin_mask = 1 << (31 - gpio); + + if (in_be32(&iop->dir) & pin_mask) + return GPIO_LINE_DIRECTION_OUT; + + return GPIO_LINE_DIRECTION_IN; +} + int cpm2_gpiochip_add32(struct device *dev) { struct device_node *np = dev->of_node; @@ -199,6 +211,7 @@ int cpm2_gpiochip_add32(struct device *dev) gc->ngpio = 32; gc->direction_input = cpm2_gpio32_dir_in; gc->direction_output = cpm2_gpio32_dir_out; + gc->get_direction = cpm2_gpio32_get_direction; gc->get = cpm2_gpio32_get; gc->set = cpm2_gpio32_set; gc->parent = dev; |