^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Coldfire generic GPIO support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (C) Copyright 2009, Steven King <sfking@fdwdc.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #ifndef coldfire_gpio_h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define coldfire_gpio_h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/coldfire.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/mcfsim.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/mcfgpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * The Generic GPIO functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * If the gpio is a compile time constant and is one of the Coldfire gpios,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * use the inline version, otherwise dispatch thru gpiolib.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static inline int gpio_get_value(unsigned gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) if (__builtin_constant_p(gpio) && gpio < MCFGPIO_PIN_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) return mcfgpio_read(__mcfgpio_ppdr(gpio)) & mcfgpio_bit(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) return __gpio_get_value(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static inline void gpio_set_value(unsigned gpio, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) if (__builtin_constant_p(gpio) && gpio < MCFGPIO_PIN_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) if (gpio < MCFGPIO_SCR_START) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) MCFGPIO_PORTTYPE data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) data = mcfgpio_read(__mcfgpio_podr(gpio));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) data |= mcfgpio_bit(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) data &= ~mcfgpio_bit(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) mcfgpio_write(data, __mcfgpio_podr(gpio));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) mcfgpio_write(mcfgpio_bit(gpio),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MCFGPIO_SETR_PORT(gpio));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) mcfgpio_write(~mcfgpio_bit(gpio),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) MCFGPIO_CLRR_PORT(gpio));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) __gpio_set_value(gpio, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static inline int gpio_to_irq(unsigned gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #if defined(MCFGPIO_IRQ_MIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if ((gpio >= MCFGPIO_IRQ_MIN) && (gpio < MCFGPIO_IRQ_MAX))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (gpio < MCFGPIO_IRQ_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return gpio + MCFGPIO_IRQ_VECBASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return __gpio_to_irq(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static inline int irq_to_gpio(unsigned irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return (irq >= MCFGPIO_IRQ_VECBASE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) irq < (MCFGPIO_IRQ_VECBASE + MCFGPIO_IRQ_MAX)) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) irq - MCFGPIO_IRQ_VECBASE : -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static inline int gpio_cansleep(unsigned gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return gpio < MCFGPIO_PIN_MAX ? 0 : __gpio_cansleep(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #ifndef CONFIG_GPIOLIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) err = gpio_request(gpio, label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (flags & GPIOF_DIR_IN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) err = gpio_direction_input(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) err = gpio_direction_output(gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) (flags & GPIOF_INIT_HIGH) ? 1 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) gpio_free(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #endif /* !CONFIG_GPIOLIB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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