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/*
* Copyright 2022 Richard Hughes <richard@hughsie.com>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include "fu-gpio-device.h"
#include "fu-gpio-plugin.h"
struct _FuGpioPlugin {
FuPlugin parent_instance;
GPtrArray *current_logical_ids; /* element-type: utf-8 */
};
G_DEFINE_TYPE(FuGpioPlugin, fu_gpio_plugin, FU_TYPE_PLUGIN)
static void
fu_gpio_plugin_to_string(FuPlugin *plugin, guint idt, GString *str)
{
FuGpioPlugin *self = FU_GPIO_PLUGIN(plugin);
for (guint i = 0; i < self->current_logical_ids->len; i++) {
const gchar *current_logical_id = g_ptr_array_index(self->current_logical_ids, i);
g_autofree gchar *title = g_strdup_printf("CurrentLogicalId[0x%02x]", i);
fwupd_codec_string_append(str, idt, title, current_logical_id);
}
}
static gboolean
fu_gpio_plugin_parse_level(const gchar *str, gboolean *ret, GError **error)
{
if (g_strcmp0(str, "high") == 0) {
*ret = TRUE;
return TRUE;
}
if (g_strcmp0(str, "low") == 0) {
*ret = FALSE;
return TRUE;
}
g_set_error(error,
FWUPD_ERROR,
FWUPD_ERROR_INVALID_DATA,
"cannot parse level, got %s and expected high|low",
str);
return FALSE;
}
static gboolean
fu_gpio_plugin_process_quirk(FuPlugin *plugin, const gchar *str, GError **error)
{
FuGpioPlugin *self = FU_GPIO_PLUGIN(plugin);
FuDevice *device_tmp;
gboolean value = FALSE;
g_auto(GStrv) split = g_strsplit(str, ",", -1);
g_autoptr(FuDeviceLocker) locker = NULL;
/* sanity check */
if (g_strv_length(split) != 3) {
g_set_error(error,
FWUPD_ERROR,
FWUPD_ERROR_INVALID_DATA,
"invalid format, CHIP_NAME,PIN_NAME,LEVEL, got '%s'",
str);
return FALSE;
}
if (!fu_gpio_plugin_parse_level(split[2], &value, error))
return FALSE;
device_tmp = fu_plugin_cache_lookup(plugin, split[0]);
if (device_tmp == NULL) {
g_set_error(error,
FWUPD_ERROR,
FWUPD_ERROR_NOT_FOUND,
"GPIO device %s not found",
split[0]);
return FALSE;
}
locker = fu_device_locker_new(device_tmp, error);
if (locker == NULL)
return FALSE;
if (!fu_gpio_device_assign(FU_GPIO_DEVICE(device_tmp), split[1], value, error)) {
g_prefix_error(error, "failed to assign %s: ", split[0]);
return FALSE;
}
/* success */
g_ptr_array_add(self->current_logical_ids, g_strdup(fu_device_get_logical_id(device_tmp)));
return TRUE;
}
static gboolean
fu_gpio_plugin_prepare(FuPlugin *self,
FuDevice *device,
FuProgress *progress,
FwupdInstallFlags flags,
GError **error)
{
GPtrArray *guids = fu_device_get_guids(device);
for (guint i = 0; i < guids->len; i++) {
const gchar *guid = g_ptr_array_index(guids, i);
const gchar *str;
str = fu_context_lookup_quirk_by_id(fu_plugin_get_context(self),
guid,
"GpioForUpdate");
if (str == NULL)
continue;
if (!fu_gpio_plugin_process_quirk(self, str, error))
return FALSE;
}
return TRUE;
}
static gboolean
fu_gpio_plugin_cleanup(FuPlugin *plugin,
FuDevice *device,
FuProgress *progress,
FwupdInstallFlags flags,
GError **error)
{
FuGpioPlugin *self = FU_GPIO_PLUGIN(plugin);
g_autoptr(GPtrArray) current_logical_ids = NULL;
/* deep copy to local to clear transaction array */
current_logical_ids =
g_ptr_array_copy(self->current_logical_ids, (GCopyFunc)g_strdup, NULL);
g_ptr_array_set_size(self->current_logical_ids, 0);
/* close the fds we opened during ->prepare */
for (guint i = 0; i < current_logical_ids->len; i++) {
FuDevice *device_tmp;
const gchar *current_logical_id = g_ptr_array_index(current_logical_ids, i);
device_tmp = fu_plugin_cache_lookup(plugin, current_logical_id);
if (device_tmp == NULL) {
g_set_error(error,
FWUPD_ERROR,
FWUPD_ERROR_NOT_FOUND,
"GPIO device %s no longer found",
current_logical_id);
return FALSE;
}
if (!fu_gpio_device_unassign(FU_GPIO_DEVICE(device_tmp), error)) {
g_prefix_error(error, "failed to unassign %s: ", current_logical_id);
return FALSE;
}
}
/* success */
return TRUE;
}
static void
fu_gpio_plugin_device_added(FuPlugin *self, FuDevice *device)
{
fu_plugin_cache_add(self, fu_device_get_logical_id(device), device);
}
static void
fu_gpio_plugin_init(FuGpioPlugin *self)
{
self->current_logical_ids = g_ptr_array_new_with_free_func(g_free);
}
static void
fu_gpio_plugin_constructed(GObject *obj)
{
FuPlugin *plugin = FU_PLUGIN(obj);
FuContext *ctx = fu_plugin_get_context(plugin);
fu_context_add_quirk_key(ctx, "GpioForUpdate");
fu_plugin_add_device_udev_subsystem(plugin, "gpio");
fu_plugin_add_device_gtype(plugin, FU_TYPE_GPIO_DEVICE);
}
static void
fu_gpio_plugin_finalize(GObject *obj)
{
FuGpioPlugin *self = FU_GPIO_PLUGIN(obj);
g_ptr_array_unref(self->current_logical_ids);
G_OBJECT_CLASS(fu_gpio_plugin_parent_class)->finalize(obj);
}
static void
fu_gpio_plugin_class_init(FuGpioPluginClass *klass)
{
FuPluginClass *plugin_class = FU_PLUGIN_CLASS(klass);
GObjectClass *object_class = G_OBJECT_CLASS(klass);
object_class->finalize = fu_gpio_plugin_finalize;
plugin_class->constructed = fu_gpio_plugin_constructed;
plugin_class->to_string = fu_gpio_plugin_to_string;
plugin_class->prepare = fu_gpio_plugin_prepare;
plugin_class->cleanup = fu_gpio_plugin_cleanup;
plugin_class->device_added = fu_gpio_plugin_device_added;
}
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