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-rw-r--r--drivers/acpi/asus_acpi.c183
1 files changed, 93 insertions, 90 deletions
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index 099f92a2c6f2..07b4c8b872cb 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -1044,6 +1044,65 @@ static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
}
/*
+ * Match the model string to the list of supported models. Return END_MODEL if
+ * no match or model is NULL.
+ */
+static int asus_model_match(char *model)
+{
+ if (model == NULL)
+ return END_MODEL;
+
+ if (strncmp(model, "L3D", 3) == 0)
+ return L3D;
+ else if (strncmp(model, "L2E", 3) == 0 ||
+ strncmp(model, "L3H", 3) == 0 || strncmp(model, "L5D", 3) == 0)
+ return L3H;
+ else if (strncmp(model, "L3", 2) == 0 || strncmp(model, "L2B", 3) == 0)
+ return L3C;
+ else if (strncmp(model, "L8L", 3) == 0)
+ return L8L;
+ else if (strncmp(model, "L4R", 3) == 0)
+ return L4R;
+ else if (strncmp(model, "M6N", 3) == 0 || strncmp(model, "W3N", 3) == 0)
+ return M6N;
+ else if (strncmp(model, "M6R", 3) == 0 || strncmp(model, "A3G", 3) == 0)
+ return M6R;
+ else if (strncmp(model, "M2N", 3) == 0 ||
+ strncmp(model, "M3N", 3) == 0 ||
+ strncmp(model, "M5N", 3) == 0 ||
+ strncmp(model, "M6N", 3) == 0 ||
+ strncmp(model, "S1N", 3) == 0 ||
+ strncmp(model, "S5N", 3) == 0 || strncmp(model, "W1N", 3) == 0)
+ return xxN;
+ else if (strncmp(model, "M1", 2) == 0)
+ return M1A;
+ else if (strncmp(model, "M2", 2) == 0 || strncmp(model, "L4E", 3) == 0)
+ return M2E;
+ else if (strncmp(model, "L2", 2) == 0)
+ return L2D;
+ else if (strncmp(model, "L8", 2) == 0)
+ return S1x;
+ else if (strncmp(model, "D1", 2) == 0)
+ return D1x;
+ else if (strncmp(model, "A1", 2) == 0)
+ return A1x;
+ else if (strncmp(model, "A2", 2) == 0)
+ return A2x;
+ else if (strncmp(model, "J1", 2) == 0)
+ return S2x;
+ else if (strncmp(model, "L5", 2) == 0)
+ return L5x;
+ else if (strncmp(model, "A4G", 3) == 0)
+ return A4G;
+ else if (strncmp(model, "W1N", 3) == 0)
+ return W1N;
+ else if (strncmp(model, "W5A", 3) == 0)
+ return W5A;
+ else
+ return END_MODEL;
+}
+
+/*
* This function is used to initialize the hotk with right values. In this
* method, we can make all the detection we want, and modify the hotk struct
*/
@@ -1053,6 +1112,7 @@ static int asus_hotk_get_info(void)
struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *model = NULL;
int bsts_result;
+ char *string = NULL;
acpi_status status;
/*
@@ -1082,120 +1142,63 @@ static int asus_hotk_get_info(void)
printk(KERN_NOTICE " BSTS called, 0x%02x returned\n",
bsts_result);
- /* This is unlikely with implicit return */
- if (buffer.pointer == NULL)
- return -EINVAL;
-
- model = (union acpi_object *)buffer.pointer;
/*
- * Samsung P30 has a device with a valid _HID whose INIT does not
- * return anything. It used to be possible to catch this exception,
- * but the implicit return code will now happily confuse the
- * driver. We assume that every ACPI_TYPE_STRING is a valid model
- * identifier but it's still possible to get completely bogus data.
+ * Try to match the object returned by INIT to the specific model.
+ * Handle every possible object (or the lack of thereof) the DSDT
+ * writers might throw at us. When in trouble, we pass NULL to
+ * asus_model_match() and try something completely different.
*/
- if (model->type == ACPI_TYPE_STRING) {
- printk(KERN_NOTICE " %s model detected, ",
- model->string.pointer);
- } else {
- if (asus_info && /* Samsung P30 */
+ if (buffer.pointer) {
+ model = (union acpi_object *)buffer.pointer;
+ switch (model->type) {
+ case ACPI_TYPE_STRING:
+ string = model->string.pointer;
+ break;
+ case ACPI_TYPE_BUFFER:
+ string = model->buffer.pointer;
+ break;
+ default:
+ kfree(model);
+ break;
+ }
+ }
+ hotk->model = asus_model_match(string);
+ if (hotk->model == END_MODEL) { /* match failed */
+ if (asus_info &&
strncmp(asus_info->oem_table_id, "ODEM", 4) == 0) {
hotk->model = P30;
printk(KERN_NOTICE
" Samsung P30 detected, supported\n");
} else {
hotk->model = M2E;
- printk(KERN_WARNING " no string returned by INIT\n");
- printk(KERN_WARNING " trying default values, supply "
- "the developers with your DSDT\n");
+ printk(KERN_NOTICE " unsupported model %s, trying "
+ "default values\n", string);
+ printk(KERN_NOTICE
+ " send /proc/acpi/dsdt to the developers\n");
}
hotk->methods = &model_conf[hotk->model];
-
- kfree(model);
-
return AE_OK;
}
-
- hotk->model = END_MODEL;
- if (strncmp(model->string.pointer, "L3D", 3) == 0)
- hotk->model = L3D;
- else if (strncmp(model->string.pointer, "L2E", 3) == 0 ||
- strncmp(model->string.pointer, "L3H", 3) == 0 ||
- strncmp(model->string.pointer, "L5D", 3) == 0)
- hotk->model = L3H;
- else if (strncmp(model->string.pointer, "L3", 2) == 0 ||
- strncmp(model->string.pointer, "L2B", 3) == 0)
- hotk->model = L3C;
- else if (strncmp(model->string.pointer, "L8L", 3) == 0)
- hotk->model = L8L;
- else if (strncmp(model->string.pointer, "L4R", 3) == 0)
- hotk->model = L4R;
- else if (strncmp(model->string.pointer, "M6N", 3) == 0 ||
- strncmp(model->string.pointer, "W3N", 3) == 0)
- hotk->model = M6N;
- else if (strncmp(model->string.pointer, "M6R", 3) == 0 ||
- strncmp(model->string.pointer, "A3G", 3) == 0)
- hotk->model = M6R;
- else if (strncmp(model->string.pointer, "M2N", 3) == 0 ||
- strncmp(model->string.pointer, "M3N", 3) == 0 ||
- strncmp(model->string.pointer, "M5N", 3) == 0 ||
- strncmp(model->string.pointer, "M6N", 3) == 0 ||
- strncmp(model->string.pointer, "S1N", 3) == 0 ||
- strncmp(model->string.pointer, "S5N", 3) == 0)
- hotk->model = xxN;
- else if (strncmp(model->string.pointer, "M1", 2) == 0)
- hotk->model = M1A;
- else if (strncmp(model->string.pointer, "M2", 2) == 0 ||
- strncmp(model->string.pointer, "L4E", 3) == 0)
- hotk->model = M2E;
- else if (strncmp(model->string.pointer, "L2", 2) == 0)
- hotk->model = L2D;
- else if (strncmp(model->string.pointer, "L8", 2) == 0)
- hotk->model = S1x;
- else if (strncmp(model->string.pointer, "D1", 2) == 0)
- hotk->model = D1x;
- else if (strncmp(model->string.pointer, "A1", 2) == 0)
- hotk->model = A1x;
- else if (strncmp(model->string.pointer, "A2", 2) == 0)
- hotk->model = A2x;
- else if (strncmp(model->string.pointer, "J1", 2) == 0)
- hotk->model = S2x;
- else if (strncmp(model->string.pointer, "L5", 2) == 0)
- hotk->model = L5x;
- else if (strncmp(model->string.pointer, "A4G", 3) == 0)
- hotk->model = A4G;
- else if (strncmp(model->string.pointer, "W1N", 3) == 0)
- hotk->model = W1N;
- else if (strncmp(model->string.pointer, "W5A", 3) == 0)
- hotk->model = W5A;
-
- if (hotk->model == END_MODEL) {
- printk("unsupported, trying default values, supply the "
- "developers with your DSDT\n");
- hotk->model = M2E;
- } else {
- printk("supported\n");
- }
-
hotk->methods = &model_conf[hotk->model];
+ printk(KERN_NOTICE " %s model detected, supported\n", string);
/* Sort of per-model blacklist */
- if (strncmp(model->string.pointer, "L2B", 3) == 0)
+ if (strncmp(string, "L2B", 3) == 0)
hotk->methods->lcd_status = NULL;
/* L2B is similar enough to L3C to use its settings, with this only
exception */
- else if (strncmp(model->string.pointer, "A3G", 3) == 0)
+ else if (strncmp(string, "A3G", 3) == 0)
hotk->methods->lcd_status = "\\BLFG";
/* A3G is like M6R */
- else if (strncmp(model->string.pointer, "S5N", 3) == 0 ||
- strncmp(model->string.pointer, "M5N", 3) == 0 ||
- strncmp(model->string.pointer, "W3N", 3) == 0)
+ else if (strncmp(string, "S5N", 3) == 0 ||
+ strncmp(string, "M5N", 3) == 0 ||
+ strncmp(string, "W3N", 3) == 0)
hotk->methods->mt_mled = NULL;
/* S5N, M5N and W3N have no MLED */
- else if (strncmp(model->string.pointer, "L5D", 3) == 0)
+ else if (strncmp(string, "L5D", 3) == 0)
hotk->methods->mt_wled = NULL;
/* L5D's WLED is not controlled by ACPI */
- else if (strncmp(model->string.pointer, "M2N", 3) == 0)
+ else if (strncmp(string, "M2N", 3) == 0)
hotk->methods->mt_wled = "WLED";
/* M2N has a usable WLED */
else if (asus_info) {
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