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// SPDX-License-Identifier: GPL-2.0
/* CAN bus driver for Microchip 25XXFD CAN Controller with SPI Interface
*
* Copyright 2019 Martin Sperl <kernel@martin.sperl.org>
*/
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include "mcp25xxfd_can_int.h"
#include "mcp25xxfd_crc.h"
#include "mcp25xxfd_ecc.h"
#include "mcp25xxfd_int.h"
#include "mcp25xxfd_priv.h"
int mcp25xxfd_int_clear(struct mcp25xxfd_priv *priv)
{
int ret;
ret = mcp25xxfd_ecc_clear_int(priv);
if (ret)
return ret;
ret = mcp25xxfd_crc_clear_int(priv);
if (ret)
return ret;
ret = mcp25xxfd_can_int_clear(priv);
return ret;
}
int mcp25xxfd_int_enable(struct mcp25xxfd_priv *priv, bool enable)
{
/* error handling only on enable for this function */
int ret = 0;
/* if we enable clear interrupt flags first */
if (enable) {
ret = mcp25xxfd_int_clear(priv);
if (ret)
goto out;
}
ret = mcp25xxfd_crc_enable_int(priv, enable);
if (ret)
goto out;
ret = mcp25xxfd_ecc_enable(priv);
if (ret)
goto out_crc;
ret = mcp25xxfd_ecc_enable_int(priv, enable);
if (ret)
goto out_crc;
ret = mcp25xxfd_can_int_enable(priv, enable);
if (ret)
goto out_ecc;
/* if we disable interrupts clear interrupt flags last */
if (!enable)
mcp25xxfd_int_clear(priv);
return 0;
out_ecc:
mcp25xxfd_ecc_enable_int(priv, false);
out_crc:
mcp25xxfd_crc_enable_int(priv, false);
out:
return ret;
}
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