diff options
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 121 |
1 files changed, 112 insertions, 9 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 0bee6c2f8864..46c71f49a6b4 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -158,6 +158,11 @@ static void sony_nc_thermal_cleanup(struct platform_device *pd); static int sony_nc_lid_resume_setup(struct platform_device *pd); static void sony_nc_lid_resume_cleanup(struct platform_device *pd); +static int sony_nc_gfx_switch_setup(struct platform_device *pd, + unsigned int handle); +static void sony_nc_gfx_switch_cleanup(struct platform_device *pd); +static int __sony_nc_gfx_switch_status_get(void); + static int sony_nc_highspeed_charging_setup(struct platform_device *pd); static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd); @@ -1241,17 +1246,13 @@ static void sony_nc_notify(struct acpi_device *device, u32 event) /* Hybrid GFX switching */ sony_call_snc_handle(handle, 0x0000, &result); dprintk("GFX switch event received (reason: %s)\n", - (result & 0x01) ? - "switch change" : "unknown"); - - /* verify the switch state - * 1: discrete GFX - * 0: integrated GFX - */ - sony_call_snc_handle(handle, 0x0100, &result); + (result == 0x1) ? "switch change" : + (result == 0x2) ? "output switch" : + (result == 0x3) ? "output switch" : + ""); ev_type = GFX_SWITCH; - real_ev = result & 0xff; + real_ev = __sony_nc_gfx_switch_status_get(); break; default: @@ -1350,6 +1351,13 @@ static void sony_nc_function_setup(struct acpi_device *device, pr_err("couldn't set up thermal profile function (%d)\n", result); break; + case 0x0128: + case 0x0146: + result = sony_nc_gfx_switch_setup(pf_device, handle); + if (result) + pr_err("couldn't set up GFX Switch status (%d)\n", + result); + break; case 0x0131: result = sony_nc_highspeed_charging_setup(pf_device); if (result) @@ -1414,6 +1422,10 @@ static void sony_nc_function_cleanup(struct platform_device *pd) case 0x0122: sony_nc_thermal_cleanup(pd); break; + case 0x0128: + case 0x0146: + sony_nc_gfx_switch_cleanup(pd); + break; case 0x0131: sony_nc_highspeed_charging_cleanup(pd); break; @@ -2355,6 +2367,97 @@ static void sony_nc_lid_resume_cleanup(struct platform_device *pd) } } +/* GFX Switch position */ +enum gfx_switch { + SPEED, + STAMINA, + AUTO +}; +struct snc_gfx_switch_control { + struct device_attribute attr; + unsigned int handle; +}; +static struct snc_gfx_switch_control *gfxs_ctl; + +/* returns 0 for speed, 1 for stamina */ +static int __sony_nc_gfx_switch_status_get(void) +{ + unsigned int result; + + if (sony_call_snc_handle(gfxs_ctl->handle, 0x0100, &result)) + return -EIO; + + switch (gfxs_ctl->handle) { + case 0x0146: + /* 1: discrete GFX (speed) + * 0: integrated GFX (stamina) + */ + return result & 0x1 ? SPEED : STAMINA; + break; + case 0x0128: + /* it's a more elaborated bitmask, for now: + * 2: integrated GFX (stamina) + * 0: discrete GFX (speed) + */ + dprintk("GFX Status: 0x%x\n", result); + return result & 0x80 ? AUTO : + result & 0x02 ? STAMINA : SPEED; + break; + } + return -EINVAL; +} + +static ssize_t sony_nc_gfx_switch_status_show(struct device *dev, + struct device_attribute *attr, + char *buffer) +{ + int pos = __sony_nc_gfx_switch_status_get(); + + if (pos < 0) + return pos; + + return snprintf(buffer, PAGE_SIZE, "%s\n", pos ? "speed" : "stamina"); +} + +static int sony_nc_gfx_switch_setup(struct platform_device *pd, + unsigned int handle) +{ + unsigned int result; + + gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL); + if (!gfxs_ctl) + return -ENOMEM; + + gfxs_ctl->handle = handle; + + sysfs_attr_init(&gfxs_ctl->attr.attr); + gfxs_ctl->attr.attr.name = "gfx_switch_status"; + gfxs_ctl->attr.attr.mode = S_IRUGO; + gfxs_ctl->attr.show = sony_nc_gfx_switch_status_show; + + result = device_create_file(&pd->dev, &gfxs_ctl->attr); + if (result) + goto gfxerror; + + return 0; + +gfxerror: + kfree(gfxs_ctl); + gfxs_ctl = NULL; + + return result; +} + +static void sony_nc_gfx_switch_cleanup(struct platform_device *pd) +{ + if (gfxs_ctl) { + device_remove_file(&pd->dev, &gfxs_ctl->attr); + + kfree(gfxs_ctl); + gfxs_ctl = NULL; + } +} + /* High speed charging function */ static struct device_attribute *hsc_handle; |
