From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/i3c/master/mipi-i3c-hci/dct_v1.c | 36 ++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 drivers/i3c/master/mipi-i3c-hci/dct_v1.c (limited to 'drivers/i3c/master/mipi-i3c-hci/dct_v1.c') diff --git a/drivers/i3c/master/mipi-i3c-hci/dct_v1.c b/drivers/i3c/master/mipi-i3c-hci/dct_v1.c new file mode 100644 index 000000000..acfd4d60f --- /dev/null +++ b/drivers/i3c/master/mipi-i3c-hci/dct_v1.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Copyright (c) 2020, MIPI Alliance, Inc. + * + * Author: Nicolas Pitre + */ + +#include +#include +#include +#include + +#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]); +} -- cgit v1.2.3