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/Linux-v6.1/Documentation/devicetree/bindings/i3c/
Dmipi-i3c-hci.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: "http://devicetree.org/schemas/i3c/mipi-i3c-hci.yaml#"
5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
7 title: MIPI I3C HCI
10 - Nicolas Pitre <npitre@baylibre.com>
13 - $ref: /schemas/i3c/i3c.yaml#
16 MIPI I3C Host Controller Interface
18 The MIPI I3C HCI (Host Controller Interface) specification defines
19 a common software driver interface to support compliant MIPI I3C
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/Linux-v6.1/drivers/i3c/master/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "Cadence I3C master driver"
4 depends on I3C
8 Enable this driver if you want to support Cadence I3C master block.
11 tristate "Synospsys DesignWare I3C master driver"
12 depends on I3C
17 Support for Synopsys DesignWare MIPI I3C Controller.
23 will be called dw-i3c-master.
26 tristate "Silvaco I3C Dual-Role Master driver"
27 depends on I3C
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DMakefile1 # SPDX-License-Identifier: GPL-2.0-only
2 obj-$(CONFIG_CDNS_I3C_MASTER) += i3c-master-cdns.o
3 obj-$(CONFIG_DW_I3C_MASTER) += dw-i3c-master.o
4 obj-$(CONFIG_SVC_I3C_MASTER) += svc-i3c-master.o
5 obj-$(CONFIG_MIPI_I3C_HCI) += mipi-i3c-hci/
/Linux-v6.1/drivers/i3c/master/mipi-i3c-hci/
DMakefile1 # SPDX-License-Identifier: BSD-3-Clause
3 obj-$(CONFIG_MIPI_I3C_HCI) += mipi-i3c-hci.o
4 mipi-i3c-hci-y := core.o ext_caps.o pio.o dma.o \
Dcore.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
7 * Core driver code with main interface to the I3C subsystem.
13 #include <linux/i3c/master.h>
20 #include "hci.h"
30 #define reg_read(r) readl(hci->base_regs + (r))
31 #define reg_write(r, v) writel(v, hci->base_regs + (r))
35 #define HCI_VERSION 0x00 /* HCI Version (in BCD) */
42 #define HC_CONTROL_HOT_JOIN_CTRL BIT(8) /* Hot-Join ACK/NACK Control */
46 #define HC_CONTROL_IBA_INCLUDE BIT(0) /* Include I3C Broadcast Address */
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Dcmd_v2.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
7 * I3C HCI v2.0 Command Descriptor Handling
9 * Note: The I3C HCI v2.0 spec is still in flux. The code here will change.
13 #include <linux/i3c/master.h>
15 #include "hci.h"
66 static unsigned int get_i3c_rate_idx(struct i3c_hci *hci) in get_i3c_rate_idx() argument
68 struct i3c_bus *bus = i3c_master_get_bus(&hci->master); in get_i3c_rate_idx()
70 if (bus->scl_rate.i3c >= 12000000) in get_i3c_rate_idx()
72 if (bus->scl_rate.i3c > 8000000) in get_i3c_rate_idx()
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Dext_caps.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
11 #include <linux/i3c/master.h>
15 #include "hci.h"
24 static int hci_extcap_hardware_id(struct i3c_hci *hci, void __iomem *base) in hci_extcap_hardware_id() argument
26 hci->vendor_mipi_id = readl(base + 0x04); in hci_extcap_hardware_id()
27 hci->vendor_version_id = readl(base + 0x08); in hci_extcap_hardware_id()
28 hci->vendor_product_id = readl(base + 0x0c); in hci_extcap_hardware_id()
30 dev_info(&hci->master.dev, "vendor MIPI ID: %#x\n", hci->vendor_mipi_id); in hci_extcap_hardware_id()
31 dev_info(&hci->master.dev, "vendor version ID: %#x\n", hci->vendor_version_id); in hci_extcap_hardware_id()
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Dcmd_v1.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
7 * I3C HCI v1.0/v1.1 Command Descriptor Handling
11 #include <linux/i3c/master.h>
13 #include "hci.h"
122 static enum hci_cmd_mode get_i3c_mode(struct i3c_hci *hci) in get_i3c_mode() argument
124 struct i3c_bus *bus = i3c_master_get_bus(&hci->master); in get_i3c_mode()
126 if (bus->scl_rate.i3c >= 12500000) in get_i3c_mode()
128 if (bus->scl_rate.i3c > 8000000) in get_i3c_mode()
130 if (bus->scl_rate.i3c > 6000000) in get_i3c_mode()
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Ddct_v1.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
10 #include <linux/i3c/master.h>
13 #include "hci.h"
20 void i3c_hci_dct_get_val(struct i3c_hci *hci, unsigned int dct_idx, in i3c_hci_dct_get_val() argument
23 void __iomem *reg = hci->DCT_regs + dct_idx * 4 * 4; in i3c_hci_dct_get_val()
32 *pid = ((u64)dct_entry_data[0]) << (47 - 32 + 1) | in i3c_hci_dct_get_val()
Dxfer_mode_rate.h1 /* SPDX-License-Identifier: BSD-3-Clause */
3 * Copyright (c) 2020, MIPI Alliance, Inc.
9 * This applies starting from I3C HCI v2.0.
22 #define XFERMODE_IDX_I3C_SDR 0x00 /* I3C SDR Mode */
23 #define XFERMODE_IDX_I3C_HDR_DDR 0x01 /* I3C HDR-DDR Mode */
24 #define XFERMODE_IDX_I3C_HDR_T 0x02 /* I3C HDR-Ternary Mode */
25 #define XFERMODE_IDX_I3C_HDR_BT 0x03 /* I3C HDR-BT Mode */
Ddat_v1.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
12 #include <linux/i3c/master.h>
15 #include "hci.h"
38 #define dat_w0_read(i) readl(hci->DAT_regs + (i) * 8)
39 #define dat_w1_read(i) readl(hci->DAT_regs + (i) * 8 + 4)
40 #define dat_w0_write(i, v) writel(v, hci->DAT_regs + (i) * 8)
41 #define dat_w1_write(i, v) writel(v, hci->DAT_regs + (i) * 8 + 4)
52 static int hci_dat_v1_init(struct i3c_hci *hci) in hci_dat_v1_init() argument
56 if (!hci->DAT_regs) { in hci_dat_v1_init()
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Ddma.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
7 * Note: The I3C HCI v2.0 spec is still in flux. The IBI support is based on
13 #include <linux/dma-mapping.h>
15 #include <linux/i3c/master.h>
18 #include "hci.h"
40 #define rhs_reg_read(r) readl(hci->RHS_regs + (RHS_##r))
41 #define rhs_reg_write(r, v) writel(v, hci->RHS_regs + (RHS_##r))
52 * Ring Header (Per-Ring Bundle)
55 #define rh_reg_read(r) readl(rh->regs + (RH_##r))
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Dpio.c1 // SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2020, MIPI Alliance, Inc.
11 #include <linux/i3c/master.h>
14 #include "hci.h"
23 #define pio_reg_read(r) readl(hci->PIO_regs + (PIO_##r))
24 #define pio_reg_write(r, v) writel(v, hci->PIO_regs + (PIO_##r))
139 static int hci_pio_init(struct i3c_hci *hci) in hci_pio_init() argument
146 return -ENOMEM; in hci_pio_init()
148 hci->io_data = pio; in hci_pio_init()
149 spin_lock_init(&pio->lock); in hci_pio_init()
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