/* SPDX-License-Identifier: GPL-2.0-only */ #include <device/mmio.h> #include <assert.h> #include <gpio.h> #include <types.h> enum { MAX_GPIO_NUMBER = 134, }; static void pos_bit_calc(gpio_t gpio, u32 *pos, u32 *bit) { *pos = gpio.id / MAX_GPIO_REG_BITS; *bit = gpio.id % MAX_GPIO_REG_BITS; } void gpio_set_pull(gpio_t gpio, enum pull_enable enable, enum pull_select select) { u32 pos; u32 bit; u32 *en_reg, *sel_reg; u32 pin = gpio.id; pos_bit_calc(gpio, &pos, &bit); if (enable == GPIO_PULL_DISABLE) { en_reg = &mtk_gpio->pullen[pos].rst; } else { /* These pins' pulls can't be set through GPIO controller. */ assert(pin < 22 || pin > 27); assert(pin < 47 || pin > 56); assert(pin < 57 || pin > 68); assert(pin < 73 || pin > 78); assert(pin < 100 || pin > 105); assert(pin < 119 || pin > 124); en_reg = &mtk_gpio->pullen[pos].set; sel_reg = (select == GPIO_PULL_DOWN) ? (&mtk_gpio->pullsel[pos].rst) : (&mtk_gpio->pullsel[pos].set); write16(sel_reg, 1L << bit); } write16(en_reg, 1L << bit); }