Commit 4ebf4987 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Wolfram Sang
Browse files

i2c: Introduce common module to instantiate CCGx UCSI 



Introduce a common module to provide an API to instantiate UCSI device
for Cypress CCGx Type-C controller. Individual bus drivers need to select
this one on demand.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 9c02d401

drivers/i2c/busses/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -9,6 +9,13 @@ menu "I2C Hardware Bus support" 
comment "PC SMBus host controller drivers"

	depends on PCI



config I2C_CCGX_UCSI

	tristate

	help

	  A common module to provide an API to instantiate UCSI device

	  for Cypress CCGx Type-C controller. Individual bus drivers

	  need to select this one on demand.



config I2C_ALI1535

	tristate "ALI 1535"

	depends on PCI

drivers/i2c/busses/Makefile

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@@ -6,6 +6,9 @@ 
# ACPI drivers

obj-$(CONFIG_I2C_SCMI)		+= i2c-scmi.o



# Auxiliary I2C/SMBus modules

obj-$(CONFIG_I2C_CCGX_UCSI)	+= i2c-ccgx-ucsi.o



# PC SMBus host controller drivers

obj-$(CONFIG_I2C_ALI1535)	+= i2c-ali1535.o

obj-$(CONFIG_I2C_ALI1563)	+= i2c-ali1563.o

drivers/i2c/busses/i2c-ccgx-ucsi.c

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+30 −0
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// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * Instantiate UCSI device for Cypress CCGx Type-C controller.

 * Derived from i2c-designware-pcidrv.c and i2c-nvidia-gpu.c.

 */



#include <linux/i2c.h>

#include <linux/export.h>

#include <linux/module.h>

#include <linux/string.h>



#include "i2c-ccgx-ucsi.h"



struct software_node;



struct i2c_client *i2c_new_ccgx_ucsi(struct i2c_adapter *adapter, int irq,

				     const struct software_node *swnode)

{

	struct i2c_board_info info = {};



	strscpy(info.type, "ccgx-ucsi", sizeof(info.type));

	info.addr = 0x08;

	info.irq = irq;

	info.swnode = swnode;



	return i2c_new_client_device(adapter, &info);

}

EXPORT_SYMBOL_GPL(i2c_new_ccgx_ucsi);



MODULE_LICENSE("GPL");

drivers/i2c/busses/i2c-ccgx-ucsi.h

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/* SPDX-License-Identifier: GPL-2.0-or-later */

#ifndef __I2C_CCGX_UCSI_H_

#define __I2C_CCGX_UCSI_H_



struct i2c_adapter;

struct i2c_client;

struct software_node;



struct i2c_client *i2c_new_ccgx_ucsi(struct i2c_adapter *adapter, int irq,

				     const struct software_node *swnode);

#endif /* __I2C_CCGX_UCSI_H_ */