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// SPDX-License-Identifier: BSD-3-Clause
/*
* Copyright (c) 2020, MIPI Alliance, Inc.
*
* Author: Nicolas Pitre <npitre@baylibre.com>
*/
#include <linux/device.h>
#include <linux/bitfield.h>
#include <linux/i3c/master.h>
#include <linux/io.h>
#include "hci.h"
#include "dct.h"
/*
* Device Characteristic Table
*/
void i3c_hci_dct_get_val(struct i3c_hci *hci, unsigned int dct_idx,
u64 *pid, unsigned int *dcr, unsigned int *bcr)
{
void __iomem *reg = hci->DCT_regs + dct_idx * 4 * 4;
u32 dct_entry_data[4];
unsigned int i;
for (i = 0; i < 4; i++) {
dct_entry_data[i] = readl(reg);
reg += 4;
}
*pid = ((u64)dct_entry_data[0]) << (47 - 32 + 1) |
FIELD_GET(W1_MASK(47, 32), dct_entry_data[1]);
*dcr = FIELD_GET(W2_MASK(71, 64), dct_entry_data[2]);
*bcr = FIELD_GET(W2_MASK(79, 72), dct_entry_data[2]);
}
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