From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/i3c/master/mipi-i3c-hci/cmd.h | 67 +++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 drivers/i3c/master/mipi-i3c-hci/cmd.h (limited to 'drivers/i3c/master/mipi-i3c-hci/cmd.h') diff --git a/drivers/i3c/master/mipi-i3c-hci/cmd.h b/drivers/i3c/master/mipi-i3c-hci/cmd.h new file mode 100644 index 0000000000..1d6dd2c5d0 --- /dev/null +++ b/drivers/i3c/master/mipi-i3c-hci/cmd.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ +/* + * Copyright (c) 2020, MIPI Alliance, Inc. + * + * Author: Nicolas Pitre + * + * Common command/response related stuff + */ + +#ifndef CMD_H +#define CMD_H + +/* + * Those bits are common to all descriptor formats and + * may be manipulated by the core code. + */ +#define CMD_0_TOC W0_BIT_(31) +#define CMD_0_ROC W0_BIT_(30) +#define CMD_0_ATTR W0_MASK(2, 0) + +/* + * Response Descriptor Structure + */ +#define RESP_STATUS(resp) FIELD_GET(GENMASK(31, 28), resp) +#define RESP_TID(resp) FIELD_GET(GENMASK(27, 24), resp) +#define RESP_DATA_LENGTH(resp) FIELD_GET(GENMASK(21, 0), resp) + +#define RESP_ERR_FIELD GENMASK(31, 28) + +enum hci_resp_err { + RESP_SUCCESS = 0x0, + RESP_ERR_CRC = 0x1, + RESP_ERR_PARITY = 0x2, + RESP_ERR_FRAME = 0x3, + RESP_ERR_ADDR_HEADER = 0x4, + RESP_ERR_BCAST_NACK_7E = 0x4, + RESP_ERR_NACK = 0x5, + RESP_ERR_OVL = 0x6, + RESP_ERR_I3C_SHORT_READ = 0x7, + RESP_ERR_HC_TERMINATED = 0x8, + RESP_ERR_I2C_WR_DATA_NACK = 0x9, + RESP_ERR_BUS_XFER_ABORTED = 0x9, + RESP_ERR_NOT_SUPPORTED = 0xa, + RESP_ERR_ABORTED_WITH_CRC = 0xb, + /* 0xc to 0xf are reserved for transfer specific errors */ +}; + +/* TID generation (4 bits wide in all cases) */ +#define hci_get_tid(bits) \ + (atomic_inc_return_relaxed(&hci->next_cmd_tid) % (1U << 4)) + +/* This abstracts operations with our command descriptor formats */ +struct hci_cmd_ops { + int (*prep_ccc)(struct i3c_hci *hci, struct hci_xfer *xfer, + u8 ccc_addr, u8 ccc_cmd, bool raw); + void (*prep_i3c_xfer)(struct i3c_hci *hci, struct i3c_dev_desc *dev, + struct hci_xfer *xfer); + void (*prep_i2c_xfer)(struct i3c_hci *hci, struct i2c_dev_desc *dev, + struct hci_xfer *xfer); + int (*perform_daa)(struct i3c_hci *hci); +}; + +/* Our various instances */ +extern const struct hci_cmd_ops mipi_i3c_hci_cmd_v1; +extern const struct hci_cmd_ops mipi_i3c_hci_cmd_v2; + +#endif -- cgit v1.2.3