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/kernel/linux/linux-6.6/drivers/media/pci/netup_unidvb/
Dnetup_unidvb_i2c.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Internal I2C bus driver for NetUP Universal Dual DVB-CI
65 irqreturn_t netup_i2c_interrupt(struct netup_i2c *i2c) in netup_i2c_interrupt() argument
71 spin_lock_irqsave(&i2c->lock, flags); in netup_i2c_interrupt()
72 reg = readw(&i2c->regs->twi_ctrl0_stat); in netup_i2c_interrupt()
73 writew(reg & ~TWI_IRQEN, &i2c->regs->twi_ctrl0_stat); in netup_i2c_interrupt()
74 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
77 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
79 i2c->state = STATE_DONE; in netup_i2c_interrupt()
83 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
[all …]
/kernel/linux/linux-5.10/drivers/media/pci/netup_unidvb/
Dnetup_unidvb_i2c.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Internal I2C bus driver for NetUP Universal Dual DVB-CI
65 irqreturn_t netup_i2c_interrupt(struct netup_i2c *i2c) in netup_i2c_interrupt() argument
71 spin_lock_irqsave(&i2c->lock, flags); in netup_i2c_interrupt()
72 reg = readw(&i2c->regs->twi_ctrl0_stat); in netup_i2c_interrupt()
73 writew(reg & ~TWI_IRQEN, &i2c->regs->twi_ctrl0_stat); in netup_i2c_interrupt()
74 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
77 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
79 i2c->state = STATE_DONE; in netup_i2c_interrupt()
83 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
[all …]
/kernel/linux/linux-5.10/drivers/i2c/
Di2c-mux.c2 * Multiplexed I2C bus driver.
4 * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
5 * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
6 * Copyright (c) 2009-2010 NSN GmbH & Co KG <michael.lawnick.ext@nsn.com>
8 * Simplifies access to complex multiplexed I2C bus topologies, by presenting
9 * each multiplexed bus segment as an additional I2C adapter.
10 * Supports multi-level mux'ing (mux behind a mux).
13 * i2c-virt.c from Kumar Gala <galak@kernel.crashing.org>
14 * i2c-virtual.c from Ken Harrenstien, Copyright (c) 2004 Google, Inc.
15 * i2c-virtual.c from Brian Kuschak <bkuschak@yahoo.com>
[all …]
/kernel/linux/linux-6.6/drivers/i2c/
Di2c-mux.c2 * Multiplexed I2C bus driver.
4 * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
5 * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
6 * Copyright (c) 2009-2010 NSN GmbH & Co KG <michael.lawnick.ext@nsn.com>
8 * Simplifies access to complex multiplexed I2C bus topologies, by presenting
9 * each multiplexed bus segment as an additional I2C adapter.
10 * Supports multi-level mux'ing (mux behind a mux).
13 * i2c-virt.c from Kumar Gala <galak@kernel.crashing.org>
14 * i2c-virtual.c from Ken Harrenstien, Copyright (c) 2004 Google, Inc.
15 * i2c-virtual.c from Brian Kuschak <bkuschak@yahoo.com>
[all …]
Di2c-atr.c1 // SPDX-License-Identifier: GPL-2.0
3 * I2C Address Translator
8 * Originally based on i2c-mux.c
12 #include <linux/i2c-atr.h>
13 #include <linux/i2c.h>
21 #define ATR_MAX_SYMLINK_LEN 11 /* Longest name is 10 chars: "channel-99" */
24 * struct i2c_atr_alias_pair - Holds the alias assigned to a client.
27 * @alias: I2C alias address assigned by the driver.
28 * This is the address that will be used to issue I2C transactions
29 * on the parent (physical) bus.
[all …]
/kernel/linux/linux-6.6/Documentation/i2c/
Di2c-topology.rst2 I2C muxes and complex topologies
5 There are a couple of reasons for building more complex I2C topologies
6 than a straight-forward I2C bus with one adapter and one or more devices.
16 from the I2C bus, at least most of the time, and sits behind a gate
19 Several types of hardware components such as I2C muxes, I2C gates and I2C
22 These components are represented as I2C adapter trees by Linux, where
23 each adapter has a parent adapter (except the root adapter) and zero or
25 I2C transfers, and all adapters with a parent are part of an "i2c-mux"
29 an I2C transfer on one of its child adapters. The mux driver can
39 There are two variants of locking available to I2C muxes, they can be
[all …]
/kernel/linux/linux-5.10/Documentation/i2c/
Di2c-topology.rst2 I2C muxes and complex topologies
5 There are a couple of reasons for building more complex I2C topologies
6 than a straight-forward I2C bus with one adapter and one or more devices.
14 from the I2C bus, at least most of the time, and sits behind a gate
20 These constructs are represented as I2C adapter trees by Linux, where
21 each adapter has a parent adapter (except the root adapter) and zero or
23 I2C transfers, and all adapters with a parent are part of an "i2c-mux"
27 an I2C transfer on one of its child adapters. The mux driver can
37 There are two variants of locking available to I2C muxes, they can be
38 mux-locked or parent-locked muxes. As is evident from below, it can be
[all …]
/kernel/linux/linux-6.6/Documentation/devicetree/bindings/i2c/
Di2c-mux-gpmux.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-mux-gpmux.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: General Purpose I2C Bus Mux
10 - Peter Rosin <peda@axentia.se>
13 This binding describes an I2C bus multiplexer that uses a mux controller
14 from the mux subsystem to route the I2C signals.
16 .-----. .-----.
18 .------------. '-----' '-----'
[all …]
/kernel/linux/linux-5.10/arch/loongarch/boot/dts/loongson/
Dloongson3_ls7a.dts1 /dts-v1/;
6 #address-cells = <2>;
7 #size-cells = <2>;
14 cpuic: interrupt-controller {
15 compatible = "loongson,cpu-interrupt-controller";
16 interrupt-controller;
17 #interrupt-cells = <1>;
20 platic: interrupt-controller@1bd00040 {
21 compatible = "loongson,ls7a-interrupt-controller";
22 interrupt-controller;
[all …]
/kernel/linux/linux-5.10/Documentation/devicetree/bindings/i2c/
Di2c-mux-gpmux.txt1 General Purpose I2C Bus Mux
3 This binding describes an I2C bus multiplexer that uses a mux controller
4 from the mux subsystem to route the I2C signals.
6 .-----. .-----.
8 .------------. '-----' '-----'
10 | | .--------+--------'
11 | .------. | .------+ child bus A, on MUX value set to 0
12 | | I2C |-|--| Mux |
13 | '------' | '--+---+ child bus B, on MUX value set to 1
14 | .------. | | '----------+--------+--------.
[all …]
/kernel/linux/linux-5.10/drivers/i2c/muxes/
Di2c-mux-gpmux.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * General Purpose I2C multiplexer
10 #include <linux/i2c.h>
11 #include <linux/i2c-mux.h>
28 ret = mux_control_select(mux->control, chan); in i2c_mux_select()
29 mux->do_not_deselect = ret < 0; in i2c_mux_select()
38 if (mux->do_not_deselect) in i2c_mux_deselect()
41 return mux_control_deselect(mux->control); in i2c_mux_deselect()
46 struct device_node *np = dev->of_node; in mux_parent_adapter()
48 struct i2c_adapter *parent; in mux_parent_adapter() local
[all …]
Di2c-mux-pinctrl.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C multiplexer using pinctrl API
8 #include <linux/i2c.h>
9 #include <linux/i2c-mux.h>
26 return pinctrl_select_state(mux->pinctrl, mux->states[chan]); in i2c_mux_pinctrl_select()
31 return i2c_mux_pinctrl_select(muxc, muxc->num_adapters); in i2c_mux_pinctrl_deselect()
41 list_for_each_entry(setting, &state->settings, node) { in i2c_mux_pinctrl_root_adapter()
42 pin_root = i2c_root_adapter(setting->pctldev->dev); in i2c_mux_pinctrl_root_adapter()
56 struct device_node *np = dev->of_node; in i2c_mux_pinctrl_parent_adapter()
58 struct i2c_adapter *parent; in i2c_mux_pinctrl_parent_adapter() local
[all …]
Di2c-mux-gpio.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C multiplexer using GPIO API
8 #include <linux/i2c.h>
9 #include <linux/i2c-mux.h>
10 #include <linux/platform_data/i2c-mux-gpio.h>
31 gpiod_set_array_value_cansleep(mux->ngpios, mux->gpios, NULL, values); in i2c_mux_gpio_set()
47 i2c_mux_gpio_set(mux, mux->data.idle); in i2c_mux_gpio_deselect()
56 struct device_node *np = pdev->dev.of_node; in i2c_mux_gpio_probe_dt()
63 return -ENODEV; in i2c_mux_gpio_probe_dt()
65 adapter_np = of_parse_phandle(np, "i2c-parent", 0); in i2c_mux_gpio_probe_dt()
[all …]
/kernel/linux/linux-6.6/drivers/i2c/muxes/
Di2c-mux-gpmux.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * General Purpose I2C multiplexer
10 #include <linux/i2c.h>
11 #include <linux/i2c-mux.h>
28 ret = mux_control_select(mux->control, chan); in i2c_mux_select()
29 mux->do_not_deselect = ret < 0; in i2c_mux_select()
38 if (mux->do_not_deselect) in i2c_mux_deselect()
41 return mux_control_deselect(mux->control); in i2c_mux_deselect()
46 struct device_node *np = dev->of_node; in mux_parent_adapter()
48 struct i2c_adapter *parent; in mux_parent_adapter() local
[all …]
Di2c-mux-pinctrl.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C multiplexer using pinctrl API
8 #include <linux/i2c.h>
9 #include <linux/i2c-mux.h>
26 return pinctrl_select_state(mux->pinctrl, mux->states[chan]); in i2c_mux_pinctrl_select()
31 return i2c_mux_pinctrl_select(muxc, muxc->num_adapters); in i2c_mux_pinctrl_deselect()
41 list_for_each_entry(setting, &state->settings, node) { in i2c_mux_pinctrl_root_adapter()
42 pin_root = i2c_root_adapter(setting->pctldev->dev); in i2c_mux_pinctrl_root_adapter()
56 struct device_node *np = dev->of_node; in i2c_mux_pinctrl_parent_adapter()
58 struct i2c_adapter *parent; in i2c_mux_pinctrl_parent_adapter() local
[all …]
Di2c-mux-gpio.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C multiplexer using GPIO API
8 #include <linux/i2c.h>
9 #include <linux/i2c-mux.h>
11 #include <linux/platform_data/i2c-mux-gpio.h>
32 gpiod_set_array_value_cansleep(mux->ngpios, mux->gpios, NULL, values); in i2c_mux_gpio_set()
48 i2c_mux_gpio_set(mux, mux->data.idle); in i2c_mux_gpio_deselect()
56 struct device *dev = &pdev->dev; in i2c_mux_gpio_probe_fw()
58 struct device_node *np = dev->of_node; in i2c_mux_gpio_probe_fw()
67 return -ENODEV; in i2c_mux_gpio_probe_fw()
[all …]
/kernel/linux/linux-6.6/drivers/i2c/busses/
Di2c-xiic.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * i2c-xiic.c
4 * Copyright (c) 2002-2007 Xilinx Inc.
5 * Copyright (c) 2009-2010 Intel Corporation
24 #include <linux/i2c.h>
27 #include <linux/platform_data/i2c-xiic.h>
34 #define DRIVER_NAME "xiic-i2c"
56 * struct xiic_i2c - Internal representation of the XIIC I2C bus
67 * @endianness: big/little-endian byte order
68 * @clk: Pointer to AXI4-lite input clock
[all …]
/kernel/linux/linux-5.10/drivers/i2c/busses/
Di2c-xiic.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * i2c-xiic.c
4 * Copyright (c) 2002-2007 Xilinx Inc.
5 * Copyright (c) 2009-2010 Intel Corporation
24 #include <linux/i2c.h>
27 #include <linux/platform_data/i2c-xiic.h>
34 #define DRIVER_NAME "xiic-i2c"
48 * struct xiic_i2c - Internal representation of the XIIC I2C bus
59 * @endianness: big/little-endian byte order
60 * @clk: Pointer to AXI4-lite input clock
[all …]
/kernel/linux/linux-6.6/include/linux/
Di2c-atr.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * I2C Address Translator
8 * Based on i2c-mux.h
14 #include <linux/i2c.h>
22 * struct i2c_atr_ops - Callbacks from ATR to the device driver.
40 * i2c_atr_new() - Allocate and initialize an I2C ATR helper.
41 * @parent: The parent (upstream) adapter
43 * @ops: Driver-specific callbacks
46 * The new ATR helper is connected to the parent adapter but has no child
53 struct i2c_atr *i2c_atr_new(struct i2c_adapter *parent, struct device *dev,
[all …]
/kernel/linux/linux-6.6/arch/arc/boot/dts/
Dabilis_tb10x.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
12 compatible = "abilis,arc-tb10x";
13 #address-cells = <1>;
14 #size-cells = <1>;
17 #address-cells = <1>;
18 #size-cells = <0>;
28 compatible = "snps,arc-timer";
30 interrupt-parent = <&intc>;
36 compatible = "snps,arc-timer";
41 #address-cells = <1>;
[all …]
/kernel/linux/linux-5.10/arch/arc/boot/dts/
Dabilis_tb10x.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
12 compatible = "abilis,arc-tb10x";
13 #address-cells = <1>;
14 #size-cells = <1>;
17 #address-cells = <1>;
18 #size-cells = <0>;
28 compatible = "snps,arc-timer";
30 interrupt-parent = <&intc>;
36 compatible = "snps,arc-timer";
41 #address-cells = <1>;
[all …]
/kernel/linux/linux-6.6/arch/arm64/boot/dts/apple/
Dt600x-die0.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
10 nco: clock-controller@28e03c000 {
11 compatible = "apple,t6000-nco", "apple,nco";
14 #clock-cells = <1>;
17 aic: interrupt-controller@28e100000 {
18 compatible = "apple,t6000-aic", "apple,aic2";
19 #interrupt-cells = <4>;
20 interrupt-controller;
23 reg-names = "core", "event";
24 power-domains = <&ps_aic>;
[all …]
/kernel/linux/linux-6.6/arch/mips/boot/dts/ingenic/
Djz4780.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
3 #include <dt-bindings/clock/ingenic,tcu.h>
4 #include <dt-bindings/dma/jz4780-dma.h>
7 #address-cells = <1>;
8 #size-cells = <1>;
12 #address-cells = <1>;
13 #size-cells = <0>;
17 compatible = "ingenic,xburst-fpu1.0-mxu1.1";
21 clock-names = "cpu";
[all …]
/kernel/linux/linux-5.10/arch/mips/boot/dts/brcm/
Dbcm7420.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <93750000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
/kernel/linux/linux-6.6/arch/mips/boot/dts/brcm/
Dbcm7420.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <93750000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]

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