Initial release

2025-08-30 15:52:11 +02:00 · 2020-12-10 14:41:36 +01:00
commit 87ade8dd27
15 changed files with 1839 additions and 0 deletions
--- a/src/gpio.c
+++ b/src/gpio.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2020 Arnaud Ferraris <arnaud.ferraris@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "gpio.h"
+
+#define GPIO_CHIP1_LABEL "1c20800.pinctrl"
+#define GPIO_CHIP2_LABEL "1f02c00.pinctrl"
+
+#define MAX_GPIOCHIP_LINES 352
+
+enum {
+    GPIO_OUT_DTR = 0,
+    GPIO_OUT_PWRKEY,
+    GPIO_OUT_RESET,
+    GPIO_OUT_APREADY,
+    GPIO_OUT_DISABLE,
+    GPIO_OUT_COUNT
+};
+
+static unsigned gpio_idx_bh[] = {
+    358,
+    35,
+    68,
+    231,
+    232
+};
+
+static unsigned gpio_idx_ce[] = {
+    34,
+    35,
+    68,
+    231,
+    232
+};
+
+int gpio_sequence_poweron(struct EG25Manager *manager)
+{
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_PWRKEY], 1);
+    sleep(1);
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_PWRKEY], 0);
+
+    g_message("Executed power-on sequence");
+
+    return 0;
+}
+
+int gpio_sequence_shutdown(struct EG25Manager *manager)
+{
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_RESET], 1);
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_DISABLE], 1);
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_PWRKEY], 1);
+    sleep(1);
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_PWRKEY], 0);
+
+    g_message("Executed power-off sequence");
+
+    return 0;
+}
+
+int gpio_sequence_suspend(struct EG25Manager *manager)
+{
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_APREADY], 1);
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_DTR], 1);
+
+    g_message("Executed suspend sequence");
+
+    return 0;
+}
+
+int gpio_sequence_resume(struct EG25Manager *manager)
+{
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_APREADY], 0);
+    gpiod_line_set_value(manager->gpio_out[GPIO_OUT_DTR], 0);
+
+    g_message("Executed resume sequence");
+
+    return 0;
+}
+
+int gpio_init(struct EG25Manager *manager)
+{
+    int i, ret;
+    unsigned *gpio_idx;
+
+    manager->gpiochip[0] = gpiod_chip_open_by_label(GPIO_CHIP1_LABEL);
+    if (!manager->gpiochip[0]) {
+        g_critical("Unable to open GPIO chip " GPIO_CHIP1_LABEL);
+        return 1;
+    }
+
+    if (manager->braveheart) {
+        // BH have DTR on the 2nd gpiochip
+        manager->gpiochip[1] = gpiod_chip_open_by_label(GPIO_CHIP2_LABEL);
+        if (!manager->gpiochip[1]) {
+            g_critical("Unable to open GPIO chip " GPIO_CHIP2_LABEL);
+            return 1;
+        }
+        gpio_idx = gpio_idx_bh;
+    } else {
+        gpio_idx = gpio_idx_ce;
+    }
+
+    for (i = 0; i < GPIO_OUT_COUNT; i++) {
+        unsigned int offset, chipidx;
+
+        if (gpio_idx[i] < MAX_GPIOCHIP_LINES) {
+            offset = gpio_idx[i];
+            chipidx = 0;
+        } else {
+            offset = gpio_idx[i] - MAX_GPIOCHIP_LINES;
+            chipidx = 1;
+        }
+
+        manager->gpio_out[i] = gpiod_chip_get_line(manager->gpiochip[chipidx], offset);
+        if (!manager->gpio_out[i]) {
+            g_critical("Unable to get line %d", i);
+            return 1;
+        }
+
+        ret = gpiod_line_request_output(manager->gpio_out[i], "eg25manager", 0);
+        if (ret < 0) {
+            g_critical("Unable to request line %d", i);
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+void gpio_destroy(struct EG25Manager *manager)
+{
+    int i;
+
+    for (i = 0; i < GPIO_OUT_COUNT; i++)
+        gpiod_line_release(manager->gpio_out[i]);
+
+    gpiod_chip_close(manager->gpiochip[0]);
+    if (manager->gpiochip[1])
+        gpiod_chip_close(manager->gpiochip[1]);
+}