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/*
* Copyright (C) 2018 Zodiac Inflight Innovation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <command.h>
#include <common.h>
#include <i2c/i2c.h>
#include <linux/mfd/rave-sp.h>
static int do_rdu2_switch_reset(void)
{
struct i2c_client client;
u8 reg;
client.adapter = i2c_get_adapter(1);
if (!client.adapter)
return -ENODEV;
/* address of the switch watchdog microcontroller */
client.addr = 0x38;
reg = 0x78;
/* set switch reset time to 100ms */
i2c_write_reg(&client, 0x0a, ®, 1);
/* reset the switch */
reg = 0x01;
i2c_write_reg(&client, 0x0d, ®, 1);
/* issue dummy command to work around firmware bug */
i2c_read_reg(&client, 0x01, ®, 1);
return 0;
}
static int do_rdu1_switch_reset(void)
{
struct device_d *sp_dev = get_device_by_name("sp");
struct rave_sp *sp = sp_dev->parent->priv;
u8 cmd[] = {
[0] = RAVE_SP_CMD_RESET_ETH_SWITCH,
[1] = 0
};
if (IS_ENABLED(CONFIG_RAVE_SP_CORE))
return rave_sp_exec(sp, cmd, sizeof(cmd), NULL, 0);
else
return -ENODEV;
}
static int do_rave_switch_reset(int argc, char *argv[])
{
if (of_machine_is_compatible("zii,imx6q-zii-rdu2") ||
of_machine_is_compatible("zii,imx6qp-zii-rdu2"))
return do_rdu2_switch_reset();
if (of_machine_is_compatible("zii,imx51-rdu1"))
return do_rdu1_switch_reset();
return -ENODEV;
}
BAREBOX_CMD_START(rave_reset_switch)
.cmd = do_rave_switch_reset,
BAREBOX_CMD_DESC("reset ethernet switch on RDU")
BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
BAREBOX_CMD_END
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