[PATCH 2/4] thinkpad_acpi: Factor out get/set adaptive kbd mode

From: Bastien Nocera
Date: Mon Mar 02 2015 - 08:45:36 EST


Move the getting/setting of the adaptive keyboard mode to separate
functions, so that we can reuse them later through sysfs attributes.

Signed-off-by: Bastien Nocera <hadess@xxxxxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 61 ++++++++++++++++++++++--------------
1 file changed, 38 insertions(+), 23 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 763aef0..5dea4c2 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -3483,6 +3483,32 @@ static const int adaptive_keyboard_modes[] = {
static bool adaptive_keyboard_mode_is_saved;
static int adaptive_keyboard_prev_mode;

+static int adaptive_keyboard_get_mode(void)
+{
+ int mode = 0;
+
+ if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
+ pr_err("Cannot read adaptive keyboard mode\n");
+ return -EIO;
+ }
+
+ return mode;
+}
+
+static int adaptive_keyboard_set_mode(int new_mode)
+{
+ if (new_mode < 0 ||
+ new_mode > LAYFLAT_MODE)
+ return -EINVAL;
+
+ if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
+ pr_err("Cannot set adaptive keyboard mode\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
static int adaptive_keyboard_get_next_mode(int mode)
{
size_t i;
@@ -3512,39 +3538,28 @@ static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
new_mode = adaptive_keyboard_prev_mode;
adaptive_keyboard_mode_is_saved = false;
} else {
- if (!acpi_evalf(
- hkey_handle, &current_mode,
- "GTRW", "dd", 0)) {
- pr_err("Cannot read adaptive keyboard mode\n");
+ current_mode = adaptive_keyboard_get_mode();
+ if (current_mode < 0)
return false;
- } else {
- new_mode = adaptive_keyboard_get_next_mode(
- current_mode);
- }
+ new_mode = adaptive_keyboard_get_next_mode(
+ current_mode);
}

- if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
- pr_err("Cannot set adaptive keyboard mode\n");
+ if (adaptive_keyboard_set_mode(new_mode) < 0)
return false;
- }

return true;

case DFR_SHOW_QUICKVIEW_ROW:
- if (!acpi_evalf(hkey_handle,
- &adaptive_keyboard_prev_mode,
- "GTRW", "dd", 0)) {
- pr_err("Cannot read adaptive keyboard mode\n");
+ current_mode = adaptive_keyboard_get_mode();
+ if (current_mode < 0)
return false;
- } else {
- adaptive_keyboard_mode_is_saved = true;

- if (!acpi_evalf(hkey_handle,
- NULL, "STRW", "vd", FUNCTION_MODE)) {
- pr_err("Cannot set adaptive keyboard mode\n");
- return false;
- }
- }
+ adaptive_keyboard_prev_mode = current_mode;
+ adaptive_keyboard_mode_is_saved = true;
+
+ if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
+ return false;
return true;

default:
--
2.1.0


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