diff options
| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/m68k/coldfire/gpio.c | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/m68k/coldfire/gpio.c')
| -rw-r--r-- | arch/m68k/coldfire/gpio.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/gpio.c b/arch/m68k/coldfire/gpio.c new file mode 100644 index 000000000..e2f7af1fa --- /dev/null +++ b/arch/m68k/coldfire/gpio.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Coldfire generic GPIO support. + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/gpio/driver.h> + +#include <linux/io.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +int __mcfgpio_get_value(unsigned gpio) +{ + return mcfgpio_read(__mcfgpio_ppdr(gpio)) & mcfgpio_bit(gpio); +} +EXPORT_SYMBOL(__mcfgpio_get_value); + +void __mcfgpio_set_value(unsigned gpio, int value) +{ + if (gpio < MCFGPIO_SCR_START) { + unsigned long flags; + MCFGPIO_PORTTYPE data; + + local_irq_save(flags); + data = mcfgpio_read(__mcfgpio_podr(gpio)); + if (value) + data |= mcfgpio_bit(gpio); + else + data &= ~mcfgpio_bit(gpio); + mcfgpio_write(data, __mcfgpio_podr(gpio)); + local_irq_restore(flags); + } else { + if (value) + mcfgpio_write(mcfgpio_bit(gpio), + MCFGPIO_SETR_PORT(gpio)); + else + mcfgpio_write(~mcfgpio_bit(gpio), + MCFGPIO_CLRR_PORT(gpio)); + } +} +EXPORT_SYMBOL(__mcfgpio_set_value); + +int __mcfgpio_direction_input(unsigned gpio) +{ + unsigned long flags; + MCFGPIO_PORTTYPE dir; + + local_irq_save(flags); + dir = mcfgpio_read(__mcfgpio_pddr(gpio)); + dir &= ~mcfgpio_bit(gpio); + mcfgpio_write(dir, __mcfgpio_pddr(gpio)); + local_irq_restore(flags); + + return 0; +} +EXPORT_SYMBOL(__mcfgpio_direction_input); + +int __mcfgpio_direction_output(unsigned gpio, int value) +{ + unsigned long flags; + MCFGPIO_PORTTYPE data; + + local_irq_save(flags); + data = mcfgpio_read(__mcfgpio_pddr(gpio)); + data |= mcfgpio_bit(gpio); + mcfgpio_write(data, __mcfgpio_pddr(gpio)); + + /* now set the data to output */ + if (gpio < MCFGPIO_SCR_START) { + data = mcfgpio_read(__mcfgpio_podr(gpio)); + if (value) + data |= mcfgpio_bit(gpio); + else + data &= ~mcfgpio_bit(gpio); + mcfgpio_write(data, __mcfgpio_podr(gpio)); + } else { + if (value) + mcfgpio_write(mcfgpio_bit(gpio), + MCFGPIO_SETR_PORT(gpio)); + else + mcfgpio_write(~mcfgpio_bit(gpio), + MCFGPIO_CLRR_PORT(gpio)); + } + local_irq_restore(flags); + return 0; +} +EXPORT_SYMBOL(__mcfgpio_direction_output); + +int __mcfgpio_request(unsigned gpio) +{ + return 0; +} +EXPORT_SYMBOL(__mcfgpio_request); + +void __mcfgpio_free(unsigned gpio) +{ + __mcfgpio_direction_input(gpio); +} +EXPORT_SYMBOL(__mcfgpio_free); + +#ifdef CONFIG_GPIOLIB + +static int mcfgpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return __mcfgpio_direction_input(offset); +} + +static int mcfgpio_get_value(struct gpio_chip *chip, unsigned offset) +{ + return !!__mcfgpio_get_value(offset); +} + +static int mcfgpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + return __mcfgpio_direction_output(offset, value); +} + +static int mcfgpio_set_value(struct gpio_chip *chip, unsigned int offset, + int value) +{ + __mcfgpio_set_value(offset, value); + + return 0; +} + +static int mcfgpio_request(struct gpio_chip *chip, unsigned offset) +{ + return __mcfgpio_request(offset); +} + +static void mcfgpio_free(struct gpio_chip *chip, unsigned offset) +{ + __mcfgpio_free(offset); +} + +static int mcfgpio_to_irq(struct gpio_chip *chip, unsigned offset) +{ +#if defined(MCFGPIO_IRQ_MIN) + if ((offset >= MCFGPIO_IRQ_MIN) && (offset < MCFGPIO_IRQ_MAX)) +#else + if (offset < MCFGPIO_IRQ_MAX) +#endif + return MCFGPIO_IRQ_VECBASE + offset; + else + return -EINVAL; +} + +static struct gpio_chip mcfgpio_chip = { + .label = "mcfgpio", + .request = mcfgpio_request, + .free = mcfgpio_free, + .direction_input = mcfgpio_direction_input, + .direction_output = mcfgpio_direction_output, + .get = mcfgpio_get_value, + .set = mcfgpio_set_value, + .to_irq = mcfgpio_to_irq, + .base = 0, + .ngpio = MCFGPIO_PIN_MAX, +}; + +static int __init mcfgpio_sysinit(void) +{ + return gpiochip_add_data(&mcfgpio_chip, NULL); +} + +core_initcall(mcfgpio_sysinit); +#endif |
