Commit d58dc780 authored by Javier Achirica's avatar Javier Achirica Committed by Matthew Garrett
Browse files

sony-laptop: add smart connect control function 



The current value is not available through the SNC device and therefore
the attribute is writable only.

Signed-off-by: default avatarJavier Achirica <jachirica@gmail.com>
Signed-off-by: default avatarMattia Dongili <malattia@linux.it>
Signed-off-by: default avatarMatthew Garrett <matthew.garrett@nebula.com>
parent 0380d471

drivers/platform/x86/sony-laptop.c

+67 −0
Original line number Diff line number Diff line
@@ -177,6 +177,9 @@ static void sony_nc_usb_charge_cleanup(struct platform_device *pd); 
static int sony_nc_panelid_setup(struct platform_device *pd);

static void sony_nc_panelid_cleanup(struct platform_device *pd);



static int sony_nc_smart_conn_setup(struct platform_device *pd);

static void sony_nc_smart_conn_cleanup(struct platform_device *pd);



static int sony_nc_touchpad_setup(struct platform_device *pd,

				  unsigned int handle);

static void sony_nc_touchpad_cleanup(struct platform_device *pd);
@@ -1422,6 +1425,12 @@ static void sony_nc_function_setup(struct acpi_device *device, 
				pr_err("couldn't set up panel ID function (%d)\n",

				       result);

			break;

		case 0x0168:

			result = sony_nc_smart_conn_setup(pf_device);

			if (result)

				pr_err("couldn't set up smart connect support (%d)\n",

						result);

			break;

		default:

			continue;

		}
@@ -1498,6 +1507,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd) 
		case 0x011D:

			sony_nc_panelid_cleanup(pd);

			break;

		case 0x0168:

			sony_nc_smart_conn_cleanup(pd);

			break;

		default:

			continue;

		}
@@ -2885,6 +2897,61 @@ static void sony_nc_panelid_cleanup(struct platform_device *pd) 
	}

}



/* smart connect function */

static struct device_attribute *sc_handle;



static ssize_t sony_nc_smart_conn_store(struct device *dev,

		struct device_attribute *attr,

		const char *buffer, size_t count)

{

	unsigned int result;

	unsigned long value;



	if (count > 31)

		return -EINVAL;



	if (kstrtoul(buffer, 10, &value) || value > 1)

		return -EINVAL;



	if (sony_call_snc_handle(0x0168, value << 0x10, &result))

		return -EIO;



	return count;

}



static int sony_nc_smart_conn_setup(struct platform_device *pd)

{

	unsigned int result;



	sc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);

	if (!sc_handle)

		return -ENOMEM;



	sysfs_attr_init(&sc_handle->attr);

	sc_handle->attr.name = "smart_connect";

	sc_handle->attr.mode = S_IWUSR;

	sc_handle->show = NULL;

	sc_handle->store = sony_nc_smart_conn_store;



	result = device_create_file(&pd->dev, sc_handle);

	if (result) {

		kfree(sc_handle);

		sc_handle = NULL;

		return result;

	}



	return 0;

}



static void sony_nc_smart_conn_cleanup(struct platform_device *pd)

{

	if (sc_handle) {

		device_remove_file(&pd->dev, sc_handle);

		kfree(sc_handle);

		sc_handle = NULL;

	}

}



/* Touchpad enable/disable */

struct touchpad_control {

	struct device_attribute attr;

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