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sony-laptop: support automatic resume on lid open
A few models offer the chance to set whether to resume from S3 and/or S4 when opening the lid. [malattia@linux.it: create three sysfs files for S3/4/5 rather than using a single one accepting a bitmask. Support S5 since the DSDT exports it. Use a struct to hold all the related values, caching of the current status value rather than re-reading all the time in the sysfs show function.] Signed-off-by: Marco Chiappero <marco@absence.it> Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Marco Chiappero
Matthew Garrett
parent
bab7084c74
commit
54535d083f
@ -152,6 +152,9 @@ static int sony_nc_thermal_setup(struct platform_device *pd);
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static void sony_nc_thermal_cleanup(struct platform_device *pd);
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static void sony_nc_thermal_resume(void);
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static int sony_nc_lid_resume_setup(struct platform_device *pd);
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static void sony_nc_lid_resume_cleanup(struct platform_device *pd);
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enum sony_nc_rfkill {
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SONY_WIFI,
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SONY_BLUETOOTH,
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@ -1286,6 +1289,12 @@ static void sony_nc_function_setup(struct acpi_device *device,
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pr_err("couldn't set up battery care function (%d)\n",
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result);
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break;
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case 0x0119:
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result = sony_nc_lid_resume_setup(pf_device);
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if (result)
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pr_err("couldn't set up lid resume function (%d)\n",
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result);
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break;
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case 0x0122:
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result = sony_nc_thermal_setup(pf_device);
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if (result)
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@ -1333,6 +1342,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd)
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case 0x013f:
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sony_nc_battery_care_cleanup(pd);
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break;
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case 0x0119:
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sony_nc_lid_resume_cleanup(pd);
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break;
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case 0x0122:
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sony_nc_thermal_cleanup(pd);
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break;
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@ -2106,6 +2118,134 @@ static void sony_nc_thermal_resume(void)
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sony_nc_thermal_mode_set(th_handle->mode);
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}
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/* resume on LID open */
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struct snc_lid_resume_control {
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struct device_attribute attrs[3];
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unsigned int status;
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};
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static struct snc_lid_resume_control *lid_ctl;
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static ssize_t sony_nc_lid_resume_store(struct device *dev,
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struct device_attribute *attr,
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const char *buffer, size_t count)
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{
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unsigned int result, pos;
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unsigned long value;
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if (count > 31)
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return -EINVAL;
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if (kstrtoul(buffer, 10, &value) || value > 1)
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return -EINVAL;
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/* the value we have to write to SNC is a bitmask:
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* +--------------+
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* | S3 | S4 | S5 |
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* +--------------+
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* 2 1 0
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*/
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if (strcmp(attr->attr.name, "lid_resume_S3") == 0)
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pos = 2;
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else if (strcmp(attr->attr.name, "lid_resume_S4") == 0)
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pos = 1;
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else if (strcmp(attr->attr.name, "lid_resume_S5") == 0)
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pos = 0;
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else
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return -EINVAL;
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if (value)
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value = lid_ctl->status | (1 << pos);
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else
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value = lid_ctl->status & ~(1 << pos);
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if (sony_call_snc_handle(0x0119, value << 0x10 | 0x0100, &result))
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return -EIO;
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lid_ctl->status = value;
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return count;
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}
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static ssize_t sony_nc_lid_resume_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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unsigned int pos;
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if (strcmp(attr->attr.name, "lid_resume_S3") == 0)
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pos = 2;
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else if (strcmp(attr->attr.name, "lid_resume_S4") == 0)
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pos = 1;
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else if (strcmp(attr->attr.name, "lid_resume_S5") == 0)
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pos = 0;
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else
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return -EINVAL;
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return snprintf(buffer, PAGE_SIZE, "%d\n",
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(lid_ctl->status >> pos) & 0x01);
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}
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static int sony_nc_lid_resume_setup(struct platform_device *pd)
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{
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unsigned int result;
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int i;
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if (sony_call_snc_handle(0x0119, 0x0000, &result))
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return -EIO;
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lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
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if (!lid_ctl)
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return -ENOMEM;
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lid_ctl->status = result & 0x7;
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sysfs_attr_init(&lid_ctl->attrs[0].attr);
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lid_ctl->attrs[0].attr.name = "lid_resume_S3";
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lid_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
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lid_ctl->attrs[0].show = sony_nc_lid_resume_show;
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lid_ctl->attrs[0].store = sony_nc_lid_resume_store;
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sysfs_attr_init(&lid_ctl->attrs[1].attr);
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lid_ctl->attrs[1].attr.name = "lid_resume_S4";
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lid_ctl->attrs[1].attr.mode = S_IRUGO | S_IWUSR;
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lid_ctl->attrs[1].show = sony_nc_lid_resume_show;
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lid_ctl->attrs[1].store = sony_nc_lid_resume_store;
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sysfs_attr_init(&lid_ctl->attrs[2].attr);
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lid_ctl->attrs[2].attr.name = "lid_resume_S5";
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lid_ctl->attrs[2].attr.mode = S_IRUGO | S_IWUSR;
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lid_ctl->attrs[2].show = sony_nc_lid_resume_show;
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lid_ctl->attrs[2].store = sony_nc_lid_resume_store;
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for (i = 0; i < 3; i++) {
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result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
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if (result)
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goto liderror;
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}
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return 0;
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liderror:
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for (; i > 0; i--)
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device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
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kfree(lid_ctl);
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lid_ctl = NULL;
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return result;
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}
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static void sony_nc_lid_resume_cleanup(struct platform_device *pd)
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{
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int i;
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if (lid_ctl) {
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for (i = 0; i < 3; i++)
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device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
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kfree(lid_ctl);
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lid_ctl = NULL;
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}
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}
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static void sony_nc_backlight_ng_read_limits(int handle,
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struct sony_backlight_props *props)
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{
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