+// SPDX-License-Identifier: GPL-2.0+
/*
* Chromium OS cros_ec driver - LPC interface
*
* Copyright (c) 2012 The Chromium OS Authors.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/*
#include <dm.h>
#include <command.h>
#include <cros_ec.h>
+#include <log.h>
#include <asm/io.h>
#ifdef DEBUG_TRACE
return 0;
}
+int cros_ec_lpc_packet(struct udevice *udev, int out_bytes, int in_bytes)
+{
+ struct cros_ec_dev *dev = dev_get_uclass_priv(udev);
+ uint8_t *d;
+ int i;
+
+ if (out_bytes > EC_LPC_HOST_PACKET_SIZE)
+ return log_msg_ret("Cannot send that many bytes\n", -E2BIG);
+
+ if (in_bytes > EC_LPC_HOST_PACKET_SIZE)
+ return log_msg_ret("Cannot receive that many bytes\n", -E2BIG);
+
+ if (wait_for_sync(dev))
+ return log_msg_ret("Timeout waiting ready\n", -ETIMEDOUT);
+
+ /* Write data */
+ for (i = 0, d = (uint8_t *)dev->dout; i < out_bytes; i++, d++)
+ outb(*d, EC_LPC_ADDR_HOST_PACKET + i);
+
+ /* Start the command */
+ outb(EC_COMMAND_PROTOCOL_3, EC_LPC_ADDR_HOST_CMD);
+
+ if (wait_for_sync(dev))
+ return log_msg_ret("Timeout waiting ready\n", -ETIMEDOUT);
+
+ /* Read back args */
+ for (i = 0, d = dev->din; i < in_bytes; i++, d++)
+ *d = inb(EC_LPC_ADDR_HOST_PACKET + i);
+
+ return in_bytes;
+}
+
int cros_ec_lpc_command(struct udevice *udev, uint8_t cmd, int cmd_version,
const uint8_t *dout, int dout_len,
uint8_t **dinp, int din_len)
}
static struct dm_cros_ec_ops cros_ec_ops = {
+ .packet = cros_ec_lpc_packet,
.command = cros_ec_lpc_command,
.check_version = cros_ec_lpc_check_version,
};