i2c: ixp2000: remove driver (69232293) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/i2c/busses/Kconfig

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Original line number	Diff line number	Diff line
		@@ -445,20 +445,6 @@ config I2C_IOP3XX
		This driver can also be built as a module. If so, the module
		will be called i2c-iop3xx.

		config I2C_IXP2000
		tristate "IXP2000 GPIO-Based I2C Interface (DEPRECATED)"
		depends on ARCH_IXP2000
		select I2C_ALGOBIT
		help
		Say Y here if you have an Intel IXP2000 (2400, 2800, 2850) based
		system and are using GPIO lines for an I2C bus.

		This support is also available as a module. If so, the module
		will be called i2c-ixp2000.

		This driver is deprecated and will be dropped soon. Use i2c-gpio
		instead.

		config I2C_MPC
		tristate "MPC107/824x/85xx/512x/52xx/83xx/86xx"
		depends on PPC

drivers/i2c/busses/Makefile

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		@@ -44,7 +44,6 @@ obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o
		obj-$(CONFIG_I2C_IMX) += i2c-imx.o
		obj-$(CONFIG_I2C_INTEL_MID) += i2c-intel-mid.o
		obj-$(CONFIG_I2C_IOP3XX) += i2c-iop3xx.o
		obj-$(CONFIG_I2C_IXP2000) += i2c-ixp2000.o
		obj-$(CONFIG_I2C_MPC) += i2c-mpc.o
		obj-$(CONFIG_I2C_MV64XXX) += i2c-mv64xxx.o
		obj-$(CONFIG_I2C_MXS) += i2c-mxs.o

drivers/i2c/busses/i2c-ixp2000.c

deleted100644 → 0

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		/*
		* drivers/i2c/busses/i2c-ixp2000.c
		*
		* I2C adapter for IXP2000 systems using GPIOs for I2C bus
		*
		* Author: Deepak Saxena <dsaxena@plexity.net>
		* Based on IXDP2400 code by: Naeem M. Afzal <naeem.m.afzal@intel.com>
		* Made generic by: Jeff Daly <jeffrey.daly@intel.com>
		*
		* Copyright (c) 2003-2004 MontaVista Software Inc.
		*
		* This file is licensed under the terms of the GNU General Public
		* License version 2. This program is licensed "as is" without any
		* warranty of any kind, whether express or implied.
		*
		* From Jeff Daly:
		*
		* I2C adapter driver for Intel IXDP2xxx platforms. This should work for any
		* IXP2000 platform if it uses the HW GPIO in the same manner. Basically,
		* SDA and SCL GPIOs have external pullups. Setting the respective GPIO to
		* an input will make the signal a '1' via the pullup. Setting them to
		* outputs will pull them down.
		*
		* The GPIOs are open drain signals and are used as configuration strap inputs
		* during power-up so there's generally a buffer on the board that needs to be
		* 'enabled' to drive the GPIOs.
		*/

		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/platform_device.h>
		#include <linux/module.h>
		#include <linux/i2c.h>
		#include <linux/i2c-algo-bit.h>
		#include <linux/slab.h>

		#include <mach/hardware.h> /* Pick up IXP2000-specific bits */
		#include <mach/gpio-ixp2000.h>

		static inline int ixp2000_scl_pin(void *data)
		{
		return ((struct ixp2000_i2c_pins*)data)->scl_pin;
		}

		static inline int ixp2000_sda_pin(void *data)
		{
		return ((struct ixp2000_i2c_pins*)data)->sda_pin;
		}


		static void ixp2000_bit_setscl(void *data, int val)
		{
		int i = 5000;

		if (val) {
		gpio_line_config(ixp2000_scl_pin(data), GPIO_IN);
		while(!gpio_line_get(ixp2000_scl_pin(data)) && i--);
		} else {
		gpio_line_config(ixp2000_scl_pin(data), GPIO_OUT);
		}
		}

		static void ixp2000_bit_setsda(void *data, int val)
		{
		if (val) {
		gpio_line_config(ixp2000_sda_pin(data), GPIO_IN);
		} else {
		gpio_line_config(ixp2000_sda_pin(data), GPIO_OUT);
		}
		}

		static int ixp2000_bit_getscl(void *data)
		{
		return gpio_line_get(ixp2000_scl_pin(data));
		}

		static int ixp2000_bit_getsda(void *data)
		{
		return gpio_line_get(ixp2000_sda_pin(data));
		}

		struct ixp2000_i2c_data {
		struct ixp2000_i2c_pins *gpio_pins;
		struct i2c_adapter adapter;
		struct i2c_algo_bit_data algo_data;
		};

		static int ixp2000_i2c_remove(struct platform_device *plat_dev)
		{
		struct ixp2000_i2c_data *drv_data = platform_get_drvdata(plat_dev);

		platform_set_drvdata(plat_dev, NULL);

		i2c_del_adapter(&drv_data->adapter);

		kfree(drv_data);

		return 0;
		}

		static int ixp2000_i2c_probe(struct platform_device *plat_dev)
		{
		int err;
		struct ixp2000_i2c_pins *gpio = plat_dev->dev.platform_data;
		struct ixp2000_i2c_data *drv_data =
		kzalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL);

		if (!drv_data)
		return -ENOMEM;
		drv_data->gpio_pins = gpio;

		drv_data->algo_data.data = gpio;
		drv_data->algo_data.setsda = ixp2000_bit_setsda;
		drv_data->algo_data.setscl = ixp2000_bit_setscl;
		drv_data->algo_data.getsda = ixp2000_bit_getsda;
		drv_data->algo_data.getscl = ixp2000_bit_getscl;
		drv_data->algo_data.udelay = 6;
		drv_data->algo_data.timeout = HZ;

		strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name,
		sizeof(drv_data->adapter.name));
		drv_data->adapter.algo_data = &drv_data->algo_data,

		drv_data->adapter.dev.parent = &plat_dev->dev;

		gpio_line_config(gpio->sda_pin, GPIO_IN);
		gpio_line_config(gpio->scl_pin, GPIO_IN);
		gpio_line_set(gpio->scl_pin, 0);
		gpio_line_set(gpio->sda_pin, 0);

		if ((err = i2c_bit_add_bus(&drv_data->adapter)) != 0) {
		dev_err(&plat_dev->dev, "Could not install, error %d\n", err);
		kfree(drv_data);
		return err;
		}

		platform_set_drvdata(plat_dev, drv_data);

		return 0;
		}

		static struct platform_driver ixp2000_i2c_driver = {
		.probe = ixp2000_i2c_probe,
		.remove = ixp2000_i2c_remove,
		.driver = {
		.name = "IXP2000-I2C",
		.owner = THIS_MODULE,
		},
		};

		module_platform_driver(ixp2000_i2c_driver);

		MODULE_AUTHOR ("Deepak Saxena <dsaxena@plexity.net>");
		MODULE_DESCRIPTION("IXP2000 GPIO-based I2C bus driver");
		MODULE_LICENSE("GPL");
		MODULE_ALIAS("platform:IXP2000-I2C");