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#include <common.h>
#include <driver.h>
#include <poweroff.h>
#include <restart.h>
#include <mach/linux.h>
#include <reset_source.h>
#include <mfd/syscon.h>
struct sandbox_power {
struct restart_handler rst_hang, rst_reexec;
struct regmap *src;
u32 src_offset;
};
static void sandbox_poweroff(struct poweroff_handler *poweroff)
{
linux_exit();
}
static void sandbox_rst_hang(struct restart_handler *rst)
{
linux_hang();
}
static void sandbox_rst_reexec(struct restart_handler *rst)
{
struct sandbox_power *power = container_of(rst, struct sandbox_power, rst_reexec);
regmap_update_bits(power->src, power->src_offset, 0xff, RESET_RST);
linux_reexec();
}
static int sandbox_power_probe(struct device_d *dev)
{
struct sandbox_power *power = xzalloc(sizeof(*power));
unsigned int rst;
int ret;
poweroff_handler_register_fn(sandbox_poweroff);
power->rst_hang = (struct restart_handler) {
.name = "hang",
.restart = sandbox_rst_hang
};
power->rst_reexec = (struct restart_handler) {
.name = "reexec", .priority = 200,
.restart = sandbox_rst_reexec,
};
restart_handler_register(&power->rst_hang);
if (IS_ENABLED(CONFIG_SANDBOX_REEXEC))
restart_handler_register(&power->rst_reexec);
power->src = syscon_regmap_lookup_by_phandle(dev->device_node, "barebox,reset-source");
if (IS_ERR(power->src))
return 0;
ret = of_property_read_u32_index(dev->device_node, "barebox,reset-source", 1,
&power->src_offset);
if (ret)
return 0;
ret = regmap_read(power->src, power->src_offset, &rst);
if (ret == 0 && rst == 0)
rst = RESET_POR;
reset_source_set_prinst(rst, RESET_SOURCE_DEFAULT_PRIORITY, 0);
return 0;
}
static __maybe_unused struct of_device_id sandbox_power_dt_ids[] = {
{ .compatible = "barebox,sandbox-power" },
{ /* sentinel */ }
};
static struct driver_d sandbox_power_drv = {
.name = "sandbox-power",
.of_compatible = sandbox_power_dt_ids,
.probe = sandbox_power_probe,
};
coredevice_platform_driver(sandbox_power_drv);
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