linux-kernel - Re: [v3 2/3] 2/3 i2c: Cypress TTSP G3 MTDEV I2C Device Driver

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Message-ID: <1294105556.2570.14.camel@hongdev>
Date:	Tue, 04 Jan 2011 09:45:56 +0800
From:	Hong Liu <hong.liu@...el.com>
To:	Kevin McNeely <kev@...ress.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	David Brown <davidb@...eaurora.org>,
	Trilok Soni <tsoni@...eaurora.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Eric Miao <eric.y.miao@...il.com>,
	Mike Frysinger <vapier@...too.org>,
	Henrik Rydberg <rydberg@...omail.se>,
	Alan Cox <alan@...ux.intel.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [v3 2/3] 2/3 i2c: Cypress TTSP G3 MTDEV I2C Device Driver

On Thu, 2010-12-30 at 03:17 +0800, Kevin McNeely wrote:
[...]
> +
> +/* registered in driver struct */
> +static int __devexit cyttsp_i2c_remove(struct i2c_client *client)
> +{
> +	struct cyttsp_i2c *ts;
> +
> +	ts = i2c_get_clientdata(client);
> +	cyttsp_core_release(ts->ttsp_client);
> +	kfree(ts);
> +	return 0;
> +}
> +
> +#ifdef CONFIG_PM
> +static int cyttsp_i2c_suspend(struct i2c_client *client, pm_message_t message)
> +{
> +	return cyttsp_suspend(dev_get_drvdata(&client->dev));
> +}
> +
> +static int cyttsp_i2c_resume(struct i2c_client *client)
> +{
> +	return cyttsp_resume(dev_get_drvdata(&client->dev));
> +}
> +#endif

I think what we get here is a pointer to cyttsp_i2c, and we need to pass
cyttsp_i2c->ttsp_client to cyttsp_suspend/resume.

Thanks,
Hong

> +
> +static const struct i2c_device_id cyttsp_i2c_id[] = {
> +	{ CY_I2C_NAME, 0 },  { }
> +};
> +
> +static struct i2c_driver cyttsp_i2c_driver = {
> +	.driver = {
> +		.name = CY_I2C_NAME,
> +		.owner = THIS_MODULE,
> +	},
> +	.probe = cyttsp_i2c_probe,
> +	.remove = __devexit_p(cyttsp_i2c_remove),
> +	.id_table = cyttsp_i2c_id,
> +#ifdef CONFIG_PM
> +	.suspend = cyttsp_i2c_suspend,
> +	.resume = cyttsp_i2c_resume,
> +#endif
> +};
> +
> +static int __init cyttsp_i2c_init(void)
> +{
> +	return i2c_add_driver(&cyttsp_i2c_driver);
> +}
> +
> +static void __exit cyttsp_i2c_exit(void)
> +{
> +	return i2c_del_driver(&cyttsp_i2c_driver);
> +}
> +
> +module_init(cyttsp_i2c_init);
> +module_exit(cyttsp_i2c_exit);
> +
> +MODULE_ALIAS("i2c:cyttsp");
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
> +MODULE_AUTHOR("Cypress");
> +MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);


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