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/openbmc/qemu/hw/i2c/
H A Dsmbus_master.c19 int smbus_quick_command(I2CBus *bus, uint8_t addr, int read) in smbus_quick_command() argument
21 if (i2c_start_transfer(bus, addr, read)) { in smbus_quick_command()
22 return -1; in smbus_quick_command()
24 i2c_end_transfer(bus); in smbus_quick_command()
28 int smbus_receive_byte(I2CBus *bus, uint8_t addr) in smbus_receive_byte() argument
30 uint8_t data; in smbus_receive_byte() local
32 if (i2c_start_recv(bus, addr)) { in smbus_receive_byte()
33 return -1; in smbus_receive_byte()
35 data = i2c_recv(bus); in smbus_receive_byte()
36 i2c_nack(bus); in smbus_receive_byte()
[all …]
/openbmc/linux/drivers/net/ethernet/ti/
H A Ddavinci_mdio.c1 // SPDX-License-Identifier: GPL-2.0+
28 #include <linux/mdio-bitbang.h>
32 * This timeout definition is a worst-case ultra defensive measure against
99 struct mii_bus *bus; member
103 * if MDIO bus is registered from DT.
110 static void davinci_mdio_init_clk(struct davinci_mdio_data *data) in davinci_mdio_init_clk() argument
114 mdio_in = clk_get_rate(data->clk); in davinci_mdio_init_clk()
115 div = (mdio_in / data->pdata.bus_freq) - 1; in davinci_mdio_init_clk()
119 data->clk_div = div; in davinci_mdio_init_clk()
123 * 32 bits of transferred data in davinci_mdio_init_clk()
[all …]
/openbmc/linux/drivers/net/mdio/
H A Dmdio-hisi-femac.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Hisilicon Fast Ethernet MDIO Bus Driver
28 static int hisi_femac_mdio_wait_ready(struct hisi_femac_mdio_data *data) in hisi_femac_mdio_wait_ready() argument
32 return readl_poll_timeout(data->membase + MDIO_RWCTRL, in hisi_femac_mdio_wait_ready()
36 static int hisi_femac_mdio_read(struct mii_bus *bus, int mii_id, int regnum) in hisi_femac_mdio_read() argument
38 struct hisi_femac_mdio_data *data = bus->priv; in hisi_femac_mdio_read() local
41 ret = hisi_femac_mdio_wait_ready(data); in hisi_femac_mdio_read()
46 data->membase + MDIO_RWCTRL); in hisi_femac_mdio_read()
48 ret = hisi_femac_mdio_wait_ready(data); in hisi_femac_mdio_read()
52 return readl(data->membase + MDIO_RO_DATA) & 0xFFFF; in hisi_femac_mdio_read()
[all …]
H A Dmdio-moxart.c1 // SPDX-License-Identifier: GPL-2.0
33 static int moxart_mdio_read(struct mii_bus *bus, int mii_id, int regnum) in moxart_mdio_read() argument
35 struct moxart_mdio_data *data = bus->priv; in moxart_mdio_read() local
39 dev_dbg(&bus->dev, "%s\n", __func__); in moxart_mdio_read()
44 writel(ctrl, data->base + REG_PHY_CTRL); in moxart_mdio_read()
47 ctrl = readl(data->base + REG_PHY_CTRL); in moxart_mdio_read()
53 count--; in moxart_mdio_read()
56 dev_dbg(&bus->dev, "%s timed out\n", __func__); in moxart_mdio_read()
58 return -ETIMEDOUT; in moxart_mdio_read()
61 static int moxart_mdio_write(struct mii_bus *bus, int mii_id, in moxart_mdio_write() argument
[all …]
H A Dmdio-sun4i.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright 2012-2013 Stefan Roese <sr@denx.de>
6 * Copyright 2013 Maxime Ripard <maxime.ripard@free-electrons.com>
36 static int sun4i_mdio_read(struct mii_bus *bus, int mii_id, int regnum) in sun4i_mdio_read() argument
38 struct sun4i_mdio_data *data = bus->priv; in sun4i_mdio_read() local
43 writel((mii_id << 8) | regnum, data->membase + EMAC_MAC_MADR_REG); in sun4i_mdio_read()
45 writel(0x1, data->membase + EMAC_MAC_MCMD_REG); in sun4i_mdio_read()
49 while (readl(data->membase + EMAC_MAC_MIND_REG) & 0x1) { in sun4i_mdio_read()
51 return -ETIMEDOUT; in sun4i_mdio_read()
56 writel(0x0, data->membase + EMAC_MAC_MCMD_REG); in sun4i_mdio_read()
[all …]
H A Dmdio-ipq4019.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
46 static int ipq4019_mdio_wait_busy(struct mii_bus *bus) in ipq4019_mdio_wait_busy() argument
48 struct ipq4019_mdio_data *priv = bus->priv; in ipq4019_mdio_wait_busy()
51 return readl_poll_timeout(priv->membase + MDIO_CMD_REG, busy, in ipq4019_mdio_wait_busy()
56 static int ipq4019_mdio_read_c45(struct mii_bus *bus, int mii_id, int mmd, in ipq4019_mdio_read_c45() argument
59 struct ipq4019_mdio_data *priv = bus->priv; in ipq4019_mdio_read_c45()
60 unsigned int data; in ipq4019_mdio_read_c45() local
63 if (ipq4019_mdio_wait_busy(bus)) in ipq4019_mdio_read_c45()
64 return -ETIMEDOUT; in ipq4019_mdio_read_c45()
66 data = readl(priv->membase + MDIO_MODE_REG); in ipq4019_mdio_read_c45()
[all …]
/openbmc/linux/drivers/ssb/
H A Dsdio.c3 * SDIO-Hostbus related functions
9 * Copyright 2007-2008 Michael Buesch <m@bues.ch>
60 #define SBSDIO_FUNC1_SBADDRMID 0x1000b /* SB Address window Mid (b23-b16) */
61 #define SBSDIO_FUNC1_SBADDRHIGH 0x1000c /* SB Address window High (b24-b31) */
71 #define SBSDIO_SB_ACCESS_2_4B_FLAG 0x8000 /* forces 32-bit SB access */
78 * ------- ------- ------------------------------------------
85 * In order to access the contents of a 32-bit Silicon Backplane address
94 * a 32-bit access flag
104 static inline struct device *ssb_sdio_dev(struct ssb_bus *bus) in ssb_sdio_dev() argument
106 return &bus->host_sdio->dev; in ssb_sdio_dev()
[all …]
/openbmc/qemu/hw/i3c/
H A Dcore.c2 * QEMU I3C bus interface.
23 #include "hw/qdev-properties.h"
26 DEFINE_PROP_UINT8("static-address", struct I3CTarget, static_address, 0),
33 static void i3c_realize(BusState *bus, Error **errp) in i3c_realize() argument
35 qbus_set_bus_hotplug_handler(bus); in i3c_realize()
38 static void i3c_class_init(ObjectClass *klass, void *data) in i3c_class_init() argument
41 k->realize = i3c_realize; in i3c_class_init()
64 I3CBus *bus; in i3c_init_bus_type() local
66 bus = I3C_BUS(qbus_new(type, parent, name)); in i3c_init_bus_type()
67 QLIST_INIT(&bus->current_devs); in i3c_init_bus_type()
[all …]
/openbmc/linux/drivers/net/ethernet/arc/
H A Demac_mdio.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2004-2013 Synopsys, Inc. (www.synopsys.com)
19 * arc_mdio_complete_wait - Waits until MDIO transaction is completed.
20 * @priv: Pointer to ARC EMAC private data structure.
22 * returns: 0 on success, -ETIMEDOUT on a timeout.
42 return -ETIMEDOUT; in arc_mdio_complete_wait()
46 * arc_mdio_read - MDIO interface read function.
47 * @bus: Pointer to MII bus structure.
51 * returns: The register contents on success, -ETIMEDOUT on a timeout.
56 static int arc_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num) in arc_mdio_read() argument
[all …]
/openbmc/u-boot/include/
H A Daxi.h1 /* SPDX-License-Identifier: GPL-2.0+ */
11 * enum axi_size_t - Determine size of AXI transfer
12 * @AXI_SIZE_8: AXI sransfer is 8-bit wide
13 * @AXI_SIZE_16: AXI sransfer is 16-bit wide
14 * @AXI_SIZE_32: AXI sransfer is 32-bit wide
24 * read() - Read a single value from a specified address on a AXI bus
25 * @dev: AXI bus to read from.
27 * @data: Pointer to a variable that takes the data value read
28 * from the address on the AXI bus.
29 * @size: The size of the data to be read.
[all …]
/openbmc/linux/sound/i2c/
H A Di2c.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
25 static int snd_i2c_bit_probeaddr(struct snd_i2c_bus *bus,
34 static int snd_i2c_bus_free(struct snd_i2c_bus *bus) in snd_i2c_bus_free() argument
39 if (snd_BUG_ON(!bus)) in snd_i2c_bus_free()
40 return -EINVAL; in snd_i2c_bus_free()
41 while (!list_empty(&bus->devices)) { in snd_i2c_bus_free()
42 device = snd_i2c_device(bus->devices.next); in snd_i2c_bus_free()
45 if (bus->master) in snd_i2c_bus_free()
46 list_del(&bus->buses); in snd_i2c_bus_free()
[all …]
/openbmc/linux/arch/mips/pci/
H A Dops-rc32434.c19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
34 #include <asm/mach-rc32434/rc32434.h>
35 #include <asm/mach-rc32434/pci.h>
41 #define PCI_CFG_SET(bus, slot, func, off) \ argument
42 (rc32434_pci->pcicfga = (0x80000000 | \
43 ((bus) << 16) | ((slot)<<11) | \
47 struct pci_bus *bus, unsigned int devfn, in config_access() argument
48 unsigned char where, u32 *data) in config_access() argument
54 PCI_CFG_SET(bus->number, slot, func, where); in config_access()
58 rc32434_pci->pcicfgd = *data; in config_access()
[all …]
H A Dops-bcm63xx.c15 #include "pci-bcm63xx.h"
18 * swizzle 32bits data to return only the needed part
20 static int postprocess_read(u32 data, int where, unsigned int size) in postprocess_read() argument
27 ret = (data >> ((where & 3) << 3)) & 0xff; in postprocess_read()
30 ret = (data >> ((where & 3) << 3)) & 0xffff; in postprocess_read()
33 ret = data; in postprocess_read()
90 /* type 0 cycle for local bus, type 1 cycle for anything else */ in bcm63xx_setup_cfg_access()
92 /* FIXME: how to specify bus ??? */ in bcm63xx_setup_cfg_access()
104 u32 data; in bcm63xx_do_cfg_read() local
106 /* two phase cycle, first we write address, then read data at in bcm63xx_do_cfg_read()
[all …]
/openbmc/linux/drivers/i2c/busses/
H A Di2c-npcm7xx.c1 // SPDX-License-Identifier: GPL-2.0
30 * of the bus.
125 #define NPCM_I2CTXF_CTL 0x12 /* Tx-FIFO Control */
126 #define NPCM_I2CT_OUT 0x14 /* Bus T.O. */
127 #define NPCM_I2CPEC 0x16 /* PEC Data */
128 #define NPCM_I2CTXF_STS 0x1A /* Tx-FIFO Status */
129 #define NPCM_I2CRXF_STS 0x1C /* Rx-FIFO Status */
130 #define NPCM_I2CRXF_CTL 0x1E /* Rx-FIF
293 const struct npcm_i2c_data *data; global() member
338 npcm_i2c_select_bank(struct npcm_i2c * bus,enum i2c_bank bank) npcm_i2c_select_bank() argument
350 npcm_i2c_init_params(struct npcm_i2c * bus) npcm_i2c_init_params() argument
367 npcm_i2c_wr_byte(struct npcm_i2c * bus,u8 data) npcm_i2c_wr_byte() argument
372 npcm_i2c_rd_byte(struct npcm_i2c * bus) npcm_i2c_rd_byte() argument
379 struct npcm_i2c *bus = container_of(_adap, struct npcm_i2c, adap); npcm_i2c_get_SCL() local
386 struct npcm_i2c *bus = container_of(_adap, struct npcm_i2c, adap); npcm_i2c_get_SDA() local
391 npcm_i2c_get_index(struct npcm_i2c * bus) npcm_i2c_get_index() argument
401 npcm_i2c_is_quick(struct npcm_i2c * bus) npcm_i2c_is_quick() argument
406 npcm_i2c_disable(struct npcm_i2c * bus) npcm_i2c_disable() argument
426 npcm_i2c_enable(struct npcm_i2c * bus) npcm_i2c_enable() argument
436 npcm_i2c_eob_int(struct npcm_i2c * bus,bool enable) npcm_i2c_eob_int() argument
454 npcm_i2c_tx_fifo_empty(struct npcm_i2c * bus) npcm_i2c_tx_fifo_empty() argument
467 npcm_i2c_rx_fifo_full(struct npcm_i2c * bus) npcm_i2c_rx_fifo_full() argument
480 npcm_i2c_clear_fifo_int(struct npcm_i2c * bus) npcm_i2c_clear_fifo_int() argument
489 npcm_i2c_clear_tx_fifo(struct npcm_i2c * bus) npcm_i2c_clear_tx_fifo() argument
498 npcm_i2c_clear_rx_fifo(struct npcm_i2c * bus) npcm_i2c_clear_rx_fifo() argument
507 npcm_i2c_int_enable(struct npcm_i2c * bus,bool enable) npcm_i2c_int_enable() argument
520 npcm_i2c_master_start(struct npcm_i2c * bus) npcm_i2c_master_start() argument
530 npcm_i2c_master_stop(struct npcm_i2c * bus) npcm_i2c_master_stop() argument
558 npcm_i2c_stall_after_start(struct npcm_i2c * bus,bool stall) npcm_i2c_stall_after_start() argument
571 npcm_i2c_nack(struct npcm_i2c * bus) npcm_i2c_nack() argument
581 npcm_i2c_clear_master_status(struct npcm_i2c * bus) npcm_i2c_clear_master_status() argument
591 npcm_i2c_slave_int_enable(struct npcm_i2c * bus,bool enable) npcm_i2c_slave_int_enable() argument
605 npcm_i2c_slave_enable(struct npcm_i2c * bus,enum i2c_addr addr_type,u8 addr,bool enable) npcm_i2c_slave_enable() argument
644 npcm_i2c_reset(struct npcm_i2c * bus) npcm_i2c_reset() argument
687 npcm_i2c_is_master(struct npcm_i2c * bus) npcm_i2c_is_master() argument
692 npcm_i2c_callback(struct npcm_i2c * bus,enum i2c_state_ind op_status,u16 info) npcm_i2c_callback() argument
754 npcm_i2c_fifo_usage(struct npcm_i2c * bus) npcm_i2c_fifo_usage() argument
765 npcm_i2c_write_to_fifo_master(struct npcm_i2c * bus,u16 max_bytes) npcm_i2c_write_to_fifo_master() argument
788 npcm_i2c_set_fifo(struct npcm_i2c * bus,int nread,int nwrite) npcm_i2c_set_fifo() argument
832 npcm_i2c_read_fifo(struct npcm_i2c * bus,u8 bytes_in_fifo) npcm_i2c_read_fifo() argument
834 u8 data; npcm_i2c_read_fifo() local
843 npcm_i2c_master_abort(struct npcm_i2c * bus) npcm_i2c_master_abort() argument
855 npcm_i2c_get_slave_addr(struct npcm_i2c * bus,enum i2c_addr addr_type) npcm_i2c_get_slave_addr() argument
867 npcm_i2c_remove_slave_addr(struct npcm_i2c * bus,u8 slave_add) npcm_i2c_remove_slave_addr() argument
882 npcm_i2c_write_fifo_slave(struct npcm_i2c * bus,u16 max_bytes) npcm_i2c_write_fifo_slave() argument
902 npcm_i2c_read_fifo_slave(struct npcm_i2c * bus,u8 bytes_in_fifo) npcm_i2c_read_fifo_slave() argument
904 u8 data; npcm_i2c_read_fifo_slave() local
922 npcm_i2c_slave_get_wr_buf(struct npcm_i2c * bus) npcm_i2c_slave_get_wr_buf() argument
946 npcm_i2c_slave_send_rd_buf(struct npcm_i2c * bus) npcm_i2c_slave_send_rd_buf() argument
969 npcm_i2c_slave_receive(struct npcm_i2c * bus,u16 nread,u8 * read_data) npcm_i2c_slave_receive() argument
983 npcm_i2c_slave_xmit(struct npcm_i2c * bus,u16 nwrite,u8 * write_data) npcm_i2c_slave_xmit() argument
1007 npcm_i2c_slave_wr_buf_sync(struct npcm_i2c * bus) npcm_i2c_slave_wr_buf_sync() argument
1027 npcm_i2c_slave_rd_wr(struct npcm_i2c * bus) npcm_i2c_slave_rd_wr() argument
1053 npcm_i2c_int_slave_handler(struct npcm_i2c * bus) npcm_i2c_int_slave_handler() argument
1264 struct npcm_i2c *bus = i2c_get_adapdata(client->adapter); npcm_i2c_reg_slave() local
1299 struct npcm_i2c *bus = client->adapter->algo_data; npcm_i2c_unreg_slave() local
1315 npcm_i2c_master_fifo_read(struct npcm_i2c * bus) npcm_i2c_master_fifo_read() argument
1349 npcm_i2c_irq_master_handler_write(struct npcm_i2c * bus) npcm_i2c_irq_master_handler_write() argument
1410 npcm_i2c_irq_master_handler_read(struct npcm_i2c * bus) npcm_i2c_irq_master_handler_read() argument
1413 u8 data; npcm_i2c_irq_master_handler_read() local
1458 npcm_i2c_irq_handle_nmatch(struct npcm_i2c * bus) npcm_i2c_irq_handle_nmatch() argument
1467 npcm_i2c_irq_handle_nack(struct npcm_i2c * bus) npcm_i2c_irq_handle_nack() argument
1518 npcm_i2c_irq_handle_ber(struct npcm_i2c * bus) npcm_i2c_irq_handle_ber() argument
1538 npcm_i2c_irq_handle_eob(struct npcm_i2c * bus) npcm_i2c_irq_handle_eob() argument
1546 npcm_i2c_irq_handle_stall_after_start(struct npcm_i2c * bus) npcm_i2c_irq_handle_stall_after_start() argument
1569 npcm_i2c_irq_handle_sda(struct npcm_i2c * bus,u8 i2cst) npcm_i2c_irq_handle_sda() argument
1643 npcm_i2c_int_master_handler(struct npcm_i2c * bus) npcm_i2c_int_master_handler() argument
1699 struct npcm_i2c *bus = container_of(_adap, struct npcm_i2c, adap); npcm_i2c_recovery_tgclk() local
1777 struct npcm_i2c *bus = container_of(_adap, struct npcm_i2c, adap); npcm_i2c_recovery_init() local
1807 npcm_i2c_init_clk(struct npcm_i2c * bus,u32 bus_freq_hz) npcm_i2c_init_clk() argument
1930 npcm_i2c_init_module(struct npcm_i2c * bus,enum i2c_mode mode,u32 bus_freq_hz) npcm_i2c_init_module() argument
1984 __npcm_i2c_init(struct npcm_i2c * bus,struct platform_device * pdev) __npcm_i2c_init() argument
2015 struct npcm_i2c *bus = dev_id; npcm_i2c_bus_irq() local
2038 npcm_i2c_master_start_xmit(struct npcm_i2c * bus,u8 slave_addr,u16 nwrite,u16 nread,u8 * write_data,u8 * read_data,bool use_PEC,bool use_read_block) npcm_i2c_master_start_xmit() argument
2085 struct npcm_i2c *bus = container_of(adap, struct npcm_i2c, adap); npcm_i2c_master_xfer() local
2257 npcm_i2c_init_debugfs(struct platform_device * pdev,struct npcm_i2c * bus) npcm_i2c_init_debugfs() argument
2282 struct npcm_i2c *bus; npcm_i2c_probe_bus() local
2363 struct npcm_i2c *bus = platform_get_drvdata(pdev); npcm_i2c_remove_bus() local
[all...]
/openbmc/linux/Documentation/ABI/obsolete/
H A Dsysfs-driver-hid-roccat-ryos1 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
4 Description: When written, this file lets one select which data from which
5 profile will be read next. The data has to be 3 bytes long.
9 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
17 The data has to be 3 bytes long.
18 The device will reject invalid data.
21 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
25 a specific profile. Profile index is included in written data.
26 The data has to be 125 bytes long.
31 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
[all …]
H A Dsysfs-driver-hid-roccat-isku1 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
4 Description: The integer value of this attribute ranges from 0-4.
12 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
15 Description: When read, this file returns general data like firmware version.
16 The data is 6 bytes long.
20 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
26 written data. The data has to be 6 bytes long.
31 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
36 in written data. The data has to be 6 bytes long.
41 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
[all …]
H A Dsysfs-driver-hid-roccat-konepure1 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
9 The data has to be 3 bytes long.
10 The mouse will reject invalid data.
13 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
16 Description: When written, this file lets one select which data from which
17 profile will be read next. The data has to be 3 bytes long.
21 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
24 Description: When read, this file returns general data like firmware version.
26 The data is 6 bytes long.
29 What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<p…
[all …]
/openbmc/rest-dbus/resources/
H A Ddbus.js4 'bus': 'session', property in initial_state
7 function populate_tree_services(node, cb, bus) argument
9 jQuery.getJSON('/bus/' + bus.name, function(data) { argument
11 for (var i in data.objects) {
12 var service = data.objects[i];
19 'bus': bus, property in AnonymousClass9ebe46fd0201
30 jQuery.getJSON('/bus/' + ctx.bus.name + '/' + ctx.service.name,
31 function(data) { argument
33 for (var i in data.objects) {
34 var obj = data.objects[i];
[all …]
/openbmc/linux/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/
H A Dbusnv50.c25 #include "bus.h"
32 u32 data; member
38 struct nv50_i2c_bus *bus = nv50_i2c_bus(base); in nv50_i2c_bus_drive_scl() local
39 struct nvkm_device *device = bus->base.pad->i2c->subdev.device; in nv50_i2c_bus_drive_scl()
40 if (state) bus->data |= 0x01; in nv50_i2c_bus_drive_scl()
41 else bus->data &= 0xfe; in nv50_i2c_bus_drive_scl()
42 nvkm_wr32(device, bus->addr, bus->data); in nv50_i2c_bus_drive_scl()
48 struct nv50_i2c_bus *bus = nv50_i2c_bus(base); in nv50_i2c_bus_drive_sda() local
49 struct nvkm_device *device = bus->base.pad->i2c->subdev.device; in nv50_i2c_bus_drive_sda()
50 if (state) bus->data |= 0x02; in nv50_i2c_bus_drive_sda()
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H A Dbus.c24 #include "bus.h"
30 * i2c-algo-bit
35 struct nvkm_i2c_bus *bus = container_of(adap, typeof(*bus), i2c); in nvkm_i2c_bus_pre_xfer() local
36 return nvkm_i2c_bus_acquire(bus); in nvkm_i2c_bus_pre_xfer()
42 struct nvkm_i2c_bus *bus = container_of(adap, typeof(*bus), i2c); in nvkm_i2c_bus_post_xfer() local
43 return nvkm_i2c_bus_release(bus); in nvkm_i2c_bus_post_xfer()
47 nvkm_i2c_bus_setscl(void *data, int state) in nvkm_i2c_bus_setscl() argument
49 struct nvkm_i2c_bus *bus = data; in nvkm_i2c_bus_setscl() local
50 bus->func->drive_scl(bus, state); in nvkm_i2c_bus_setscl()
54 nvkm_i2c_bus_setsda(void *data, int state) in nvkm_i2c_bus_setsda() argument
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/openbmc/linux/drivers/pmdomain/bcm/
H A Dbcm-pmb.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <dt-bindings/soc/bcm-pmb.h>
80 u8 bus; member
86 const struct bcm_pmb_pd_data *data; member
90 static int bcm_pmb_bpcm_read(struct bcm_pmb *pmb, int bus, u8 device, in bcm_pmb_bpcm_read() argument
93 void __iomem *base = pmb->base + bus * 0x20; in bcm_pmb_bpcm_read()
97 spin_lock_irqsave(&pmb->lock, flags); in bcm_pmb_bpcm_read()
99 spin_unlock_irqrestore(&pmb->lock, flags); in bcm_pmb_bpcm_read()
102 *val = pmb->little_endian ? le32_to_cpu(*val) : be32_to_cpu(*val); in bcm_pmb_bpcm_read()
107 static int bcm_pmb_bpcm_write(struct bcm_pmb *pmb, int bus, u8 device, in bcm_pmb_bpcm_write() argument
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/openbmc/linux/drivers/i2c/muxes/
H A Di2c-mux-pca9541.c2 * I2C multiplexer driver for PCA9541 bus master selector
6 * Author: Guenter Roeck <linux@roeck-us.net>
11 * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
12 * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
23 #include <linux/i2c-mux.h>
29 * The PCA9541 is a bus master selector. It supports two I2C masters connected
30 * to a single slave bus.
32 * Before each bus transaction, a master has to acquire bus ownership. After the
33 * transaction is complete, bus ownership has to be released. This fits well
36 * single-channel I2C bus multiplexer.
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/openbmc/u-boot/drivers/spi/
H A Dkirkwood_spi.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
19 #include <asm/arch-mvebu/spi.h>
23 setbits_le32(&reg->ctrl, KWSPI_CSN_ACT); in _spi_cs_activate()
28 clrbits_le32(&reg->ctrl, KWSPI_CSN_ACT); in _spi_cs_deactivate()
43 * handle data in 8-bit chunks in _spi_xfer()
46 clrsetbits_le32(&reg->cfg, KWSPI_XFERLEN_MASK, KWSPI_XFERLEN_1BYTE); in _spi_xfer()
52 /* Shift data so it's msb-justified */ in _spi_xfer()
56 clrbits_le32(&reg->irq_cause, KWSPI_SMEMRDIRQ); in _spi_xfer()
57 writel(tmpdout, &reg->dout); /* Write the data out */ in _spi_xfer()
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/openbmc/linux/Documentation/driver-api/soundwire/
H A Dsummary.rst6 SoundWire is used for transporting data typically related to audio
10 SoundWire is a 2-pin multi-drop interface with data and clock line. It
14 (1) Transporting all of payload data channels, control information, and setup
15 commands over a single two-pin interface.
18 (Dual Data Rate) data transmission.
20 (3) Clock scaling and optional multiple data lanes to give wide flexibility
21 in data rate to match system requirements.
23 (4) Device status monitoring, including interrupt-style alerts to the Master.
26 interfaces share the common Bus containing data and clock line. Each of the
27 Slaves can support up to 14 Data Ports. 13 Data Ports are dedicated to audio
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/openbmc/qemu/include/hw/i3c/
H A Di3c.h2 * QEMU I3C bus interface.
20 #include "hw/qdev-core.h"
24 #define TYPE_I3C_TARGET "i3c-target"
105 * Controller to target. Returns 0 for success, non-zero for NAK or other
108 int (*send)(I3CTarget *s, const uint8_t *data, uint32_t num_to_send,
114 uint32_t (*recv)(I3CTarget *s, uint8_t *data, uint32_t num_to_read);
115 /* Notify the target of a bus state change. */
122 int (*handle_ccc_read)(I3CTarget *s, uint8_t *data, uint32_t num_to_read,
129 int (*handle_ccc_write)(I3CTarget *s, const uint8_t *data,
157 #define TYPE_I3C_BUS "i3c-bus"
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