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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /chip/mec1322/gpio.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-stabilize-14469.8.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'chip/mec1322/gpio.c')
-rw-r--r--chip/mec1322/gpio.c291
1 files changed, 0 insertions, 291 deletions
diff --git a/chip/mec1322/gpio.c b/chip/mec1322/gpio.c
deleted file mode 100644
index 331022c87c..0000000000
--- a/chip/mec1322/gpio.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/* Copyright 2013 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 for MEC1322 */
-
-#include "common.h"
-#include "gpio.h"
-#include "hooks.h"
-#include "registers.h"
-#include "system.h"
-#include "task.h"
-#include "timer.h"
-#include "util.h"
-
-struct gpio_int_mapping {
- int8_t girq_id;
- int8_t port_offset;
-};
-
-/* Mapping from GPIO port to GIRQ info */
-static const struct gpio_int_mapping int_map[22] = {
- {11, 0}, {11, 0}, {11, 0}, {11, 0},
- {10, 4}, {10, 4}, {10, 4}, {-1, -1},
- {-1, -1}, {-1, -1}, {9, 10}, {9, 10},
- {9, 10}, {9, 10}, {8, 14}, {8, 14},
- {8, 14}, {-1, -1}, {-1, -1}, {-1, -1},
- {20, 20}, {20, 20}
-};
-
-void gpio_set_alternate_function(uint32_t port, uint32_t mask,
- enum gpio_alternate_func func)
-{
- int i;
- uint32_t val;
-
- while (mask) {
- i = __builtin_ffs(mask) - 1;
- val = MEC1322_GPIO_CTL(port, i);
- val &= ~(BIT(12) | BIT(13));
- /* mux_control = DEFAULT, indicates GPIO */
- if (func > GPIO_ALT_FUNC_DEFAULT)
- val |= (func & 0x3) << 12;
- MEC1322_GPIO_CTL(port, i) = val;
- mask &= ~BIT(i);
- }
-}
-
-test_mockable int gpio_get_level(enum gpio_signal signal)
-{
- uint32_t mask = gpio_list[signal].mask;
- int i;
- uint32_t val;
-
- if (mask == 0)
- return 0;
- i = GPIO_MASK_TO_NUM(mask);
- val = MEC1322_GPIO_CTL(gpio_list[signal].port, i);
-
- return (val & BIT(24)) ? 1 : 0;
-}
-
-void gpio_set_level(enum gpio_signal signal, int value)
-{
- uint32_t mask = gpio_list[signal].mask;
- int i;
-
- if (mask == 0)
- return;
- i = GPIO_MASK_TO_NUM(mask);
-
- if (value)
- MEC1322_GPIO_CTL(gpio_list[signal].port, i) |= BIT(16);
- else
- MEC1322_GPIO_CTL(gpio_list[signal].port, i) &= ~BIT(16);
-}
-
-void gpio_set_flags_by_mask(uint32_t port, uint32_t mask, uint32_t flags)
-{
- int i;
- uint32_t val;
- while (mask) {
- i = GPIO_MASK_TO_NUM(mask);
- mask &= ~BIT(i);
- val = MEC1322_GPIO_CTL(port, i);
-
- /*
- * Select open drain first, so that we don't glitch the signal
- * when changing the line to an output.
- */
- if (flags & GPIO_OPEN_DRAIN)
- val |= BIT(8);
- else
- val &= ~BIT(8);
-
- if (flags & GPIO_OUTPUT) {
- val |= BIT(9);
- val &= ~BIT(10);
- } else {
- val &= ~BIT(9);
- val |= BIT(10);
- }
-
- /* Handle pullup / pulldown */
- if (flags & GPIO_PULL_UP)
- val = (val & ~0x3) | 0x1;
- else if (flags & GPIO_PULL_DOWN)
- val = (val & ~0x3) | 0x2;
- else
- val &= ~0x3;
-
- /* Set up interrupt */
- if (flags & (GPIO_INT_F_RISING | GPIO_INT_F_FALLING))
- val |= BIT(7);
- else
- val &= ~BIT(7);
-
- val &= ~(0x7 << 4);
-
- if ((flags & GPIO_INT_F_RISING) && (flags & GPIO_INT_F_FALLING))
- val |= 0x7 << 4;
- else if (flags & GPIO_INT_F_RISING)
- val |= 0x5 << 4;
- else if (flags & GPIO_INT_F_FALLING)
- val |= 0x6 << 4;
- else if (flags & GPIO_INT_F_HIGH)
- val |= 0x1 << 4;
- else if (!(flags & GPIO_INT_F_LOW)) /* No interrupt flag set */
- val |= 0x4 << 4;
-
- /* Set up level */
- if (flags & GPIO_HIGH)
- val |= BIT(16);
- else if (flags & GPIO_LOW)
- val &= ~BIT(16);
-
- MEC1322_GPIO_CTL(port, i) = val;
- }
-}
-
-int gpio_enable_interrupt(enum gpio_signal signal)
-{
- int i, port, girq_id, bit_id;
-
- if (gpio_list[signal].mask == 0)
- return EC_SUCCESS;
-
- i = GPIO_MASK_TO_NUM(gpio_list[signal].mask);
- port = gpio_list[signal].port;
- girq_id = int_map[port].girq_id;
- bit_id = (port - int_map[port].port_offset) * 8 + i;
-
- MEC1322_INT_ENABLE(girq_id) |= BIT(bit_id);
- MEC1322_INT_BLK_EN |= BIT(girq_id);
-
- return EC_SUCCESS;
-}
-
-int gpio_disable_interrupt(enum gpio_signal signal)
-{
- int i, port, girq_id, bit_id;
-
- if (gpio_list[signal].mask == 0)
- return EC_SUCCESS;
-
- i = GPIO_MASK_TO_NUM(gpio_list[signal].mask);
- port = gpio_list[signal].port;
- girq_id = int_map[port].girq_id;
- bit_id = (port - int_map[port].port_offset) * 8 + i;
-
- MEC1322_INT_DISABLE(girq_id) = BIT(bit_id);
-
- return EC_SUCCESS;
-}
-
-int gpio_clear_pending_interrupt(enum gpio_signal signal)
-{
- int i, port, girq_id, bit_id;
-
- if (gpio_list[signal].mask == 0)
- return EC_SUCCESS;
-
- i = GPIO_MASK_TO_NUM(gpio_list[signal].mask);
- port = gpio_list[signal].port;
- girq_id = int_map[port].girq_id;
- bit_id = (port - int_map[port].port_offset) * 8 + i;
-
- /* Clear interrupt source sticky status bit even if not enabled */
- MEC1322_INT_SOURCE(girq_id) |= 1 << bit_id;
-
- return EC_SUCCESS;
-}
-
-void gpio_pre_init(void)
-{
- int i;
- int flags;
- int is_warm = system_is_reboot_warm();
- const struct gpio_info *g = gpio_list;
-
-
- for (i = 0; i < GPIO_COUNT; i++, g++) {
- flags = g->flags;
-
- if (flags & GPIO_DEFAULT)
- continue;
-
- /*
- * If this is a warm reboot, don't set the output levels or
- * we'll shut off the AP.
- */
- if (is_warm)
- flags &= ~(GPIO_LOW | GPIO_HIGH);
-
- gpio_set_flags_by_mask(g->port, g->mask, flags);
-
- /* Use as GPIO, not alternate function */
- gpio_set_alternate_function(g->port, g->mask,
- GPIO_ALT_FUNC_NONE);
- }
-}
-
-/* Clear any interrupt flags before enabling GPIO interrupt */
-#define ENABLE_GPIO_GIRQ(x) \
- do { \
- MEC1322_INT_SOURCE(x) |= MEC1322_INT_RESULT(x); \
- task_enable_irq(MEC1322_IRQ_GIRQ ## x); \
- } while (0)
-
-static void gpio_init(void)
-{
- ENABLE_GPIO_GIRQ(8);
- ENABLE_GPIO_GIRQ(9);
- ENABLE_GPIO_GIRQ(10);
- ENABLE_GPIO_GIRQ(11);
- ENABLE_GPIO_GIRQ(20);
-}
-DECLARE_HOOK(HOOK_INIT, gpio_init, HOOK_PRIO_DEFAULT);
-
-/*****************************************************************************/
-/* Interrupt handlers */
-
-
-/**
- * Handler for each GIRQ interrupt. This reads and clears the interrupt bits for
- * the GIRQ interrupt, then finds and calls the corresponding GPIO interrupt
- * handlers.
- *
- * @param girq GIRQ index
- * @param port_offset GPIO port offset for the given GIRQ
- */
-static void gpio_interrupt(int girq, int port_offset)
-{
- int i, bit;
- const struct gpio_info *g = gpio_list;
- uint32_t sts = MEC1322_INT_RESULT(girq);
-
- MEC1322_INT_SOURCE(girq) |= sts;
-
- for (i = 0; i < GPIO_IH_COUNT && sts; ++i, ++g) {
- bit = (g->port - port_offset) * 8 + __builtin_ffs(g->mask) - 1;
- if (sts & BIT(bit))
- gpio_irq_handlers[i](i);
- sts &= ~BIT(bit);
- }
-}
-
-#define GPIO_IRQ_FUNC(irqfunc, girq, port_offset) \
- void irqfunc(void) \
- { \
- gpio_interrupt(girq, port_offset); \
- }
-
-GPIO_IRQ_FUNC(__girq_8_interrupt, 8, 14);
-GPIO_IRQ_FUNC(__girq_9_interrupt, 9, 10);
-GPIO_IRQ_FUNC(__girq_10_interrupt, 10, 4);
-GPIO_IRQ_FUNC(__girq_11_interrupt, 11, 0);
-GPIO_IRQ_FUNC(__girq_20_interrupt, 20, 20);
-
-#undef GPIO_IRQ_FUNC
-
-/*
- * Declare IRQs. Nesting this macro inside the GPIO_IRQ_FUNC macro works
- * poorly because DECLARE_IRQ() stringizes its inputs.
- */
-DECLARE_IRQ(MEC1322_IRQ_GIRQ8, __girq_8_interrupt, 1);
-DECLARE_IRQ(MEC1322_IRQ_GIRQ9, __girq_9_interrupt, 1);
-DECLARE_IRQ(MEC1322_IRQ_GIRQ10, __girq_10_interrupt, 1);
-DECLARE_IRQ(MEC1322_IRQ_GIRQ11, __girq_11_interrupt, 1);
-DECLARE_IRQ(MEC1322_IRQ_GIRQ20, __girq_20_interrupt, 1);