diff options
Diffstat (limited to 'chip/mt_scp/mt8183/gpio.c')
| -rw-r--r-- | chip/mt_scp/mt8183/gpio.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/chip/mt_scp/mt8183/gpio.c b/chip/mt_scp/mt8183/gpio.c deleted file mode 100644 index a4896aae72..0000000000 --- a/chip/mt_scp/mt8183/gpio.c +++ /dev/null @@ -1,180 +0,0 @@ -/* Copyright 2018 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* GPIO module */ - -#include "gpio.h" -#include "hooks.h" -#include "registers.h" -#include "system.h" -#include "task.h" -#include "util.h" - -void gpio_set_alternate_function(uint32_t port, uint32_t mask, - enum gpio_alternate_func func) -{ - int bit, mode_reg_index, shift; - uint32_t mode_bits, mode_mask; - - /* Up to 8 alt functions per port */ - if (func > GPIO_ALT_FUNC_7) - return; - - if (func == GPIO_ALT_FUNC_NONE) - func = GPIO_ALT_FUNC_DEFAULT; - - while (mask) { - /* 32 gpio per port */ - bit = get_next_bit(&mask); - /* 8 gpio per mode reg */ - mode_reg_index = (port << 2) | (bit >> 3); - /* - * b[3] - write enable(?) - * b[2:0] - mode - */ - shift = (bit & 7) << 2; - mode_bits = func << shift; - mode_mask = ~(0xf << shift); - AP_GPIO_MODE(mode_reg_index) = (AP_GPIO_MODE(mode_reg_index) & - mode_mask) | mode_bits; - } -} - -test_mockable int gpio_get_level(enum gpio_signal signal) -{ - return !!(AP_GPIO_DIN(gpio_list[signal].port) & - gpio_list[signal].mask); -} - - -void gpio_set_level(enum gpio_signal signal, int value) -{ - if (value) - AP_GPIO_DOUT(gpio_list[signal].port) |= gpio_list[signal].mask; - else - AP_GPIO_DOUT(gpio_list[signal].port) &= ~gpio_list[signal].mask; -} - -void gpio_set_flags_by_mask(uint32_t port, uint32_t mask, uint32_t flags) -{ - /* Set input/output mode */ - if (flags & GPIO_OUTPUT) { - /* Set level before changing to output mode */ - if (flags & GPIO_HIGH) - AP_GPIO_DOUT(port) |= mask; - if (flags & GPIO_LOW) - AP_GPIO_DOUT(port) &= ~mask; - AP_GPIO_DIR(port) |= mask; - } else { - AP_GPIO_DIR(port) &= ~mask; - } - - if (flags & (GPIO_INT_F_RISING | GPIO_INT_F_HIGH)) - SCP_EINT_POLARITY_SET[port] = mask; - - if (flags & (GPIO_INT_F_FALLING | GPIO_INT_F_LOW)) - SCP_EINT_POLARITY_CLR[port] = mask; - else - SCP_EINT_POLARITY_SET[port] = mask; - - /* Set sensitivity register on edge trigger */ - if (flags & (GPIO_INT_F_RISING | GPIO_INT_F_FALLING)) - SCP_EINT_SENS_SET[port] = mask; - else - SCP_EINT_SENS_CLR[port] = mask; -} - -int gpio_get_flags_by_mask(uint32_t port, uint32_t mask) -{ - /* TODO(b/120167145): implement get flags */ - return 0; -} - -int gpio_enable_interrupt(enum gpio_signal signal) -{ - const struct gpio_info *g = gpio_list + signal; - - if (signal >= GPIO_IH_COUNT || !g->mask) - return EC_ERROR_INVAL; - - SCP_EINT_MASK_CLR[g->port] = g->mask; - - return EC_SUCCESS; -} - -int gpio_disable_interrupt(enum gpio_signal signal) -{ - const struct gpio_info *g = gpio_list + signal; - - if (signal >= GPIO_IH_COUNT || !g->mask) - return EC_ERROR_INVAL; - - SCP_EINT_MASK_SET[g->port] = g->mask; - - return EC_SUCCESS; -} - -int gpio_clear_pending_interrupt(enum gpio_signal signal) -{ - const struct gpio_info *g = gpio_list + signal; - - if (signal >= GPIO_IH_COUNT || !g->mask) - return EC_ERROR_INVAL; - - SCP_EINT_ACK[g->port] = g->mask; - - return EC_SUCCESS; -} - -void gpio_pre_init(void) -{ - const struct gpio_info *g = gpio_list; - int i; - int is_warm = system_is_reboot_warm(); - - for (i = 0; i < GPIO_COUNT; i++, g++) { - int flags = g->flags; - - if (flags & GPIO_DEFAULT) - continue; - - if (is_warm) - flags &= ~(GPIO_LOW | GPIO_HIGH); - - gpio_set_flags_by_mask(g->port, g->mask, flags); - } -} - -void gpio_init(void) -{ - /* Enable EINT IRQ */ - task_enable_irq(SCP_IRQ_EINT); -} -DECLARE_HOOK(HOOK_INIT, gpio_init, HOOK_PRIO_DEFAULT); - -/* Interrupt handler */ -void __keep gpio_interrupt(void) -{ - int bit, port; - uint32_t pending; - enum gpio_signal signal; - - for (port = 0; port <= MAX_EINT_PORT; port++) { - pending = SCP_EINT_STATUS[port]; - - while (pending) { - bit = get_next_bit(&pending); - SCP_EINT_ACK[port] = BIT(bit); - /* Skip masked gpio */ - if (SCP_EINT_MASK_GET[port] & BIT(bit)) - continue; - /* Call handler */ - signal = port * 32 + bit; - if (signal < GPIO_IH_COUNT) - gpio_irq_handlers[signal](signal); - } - } -} -DECLARE_IRQ(SCP_IRQ_EINT, gpio_interrupt, 1); |