Input: spear-keyboard - add clk_{un}prepare() support

clk_{un}prepare is mandatory for platforms using common clock framework.
Because for SPEAr we don't do anything in clk_{un}prepare() calls, just
call them once in probe/remove.

Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/input/keyboard/spear-keyboard.c b/drivers/input/keyboard/spear-keyboard.c
index d70093bef740..695d237417d6 100644
--- a/drivers/input/keyboard/spear-keyboard.c
+++ b/drivers/input/keyboard/spear-keyboard.c
@@ -267,9 +267,14 @@ static int spear_kbd_probe(struct platform_device *pdev)
                 return error;
         }
 
+        error = clk_prepare(kbd->clk);
+        if (error)
+                return error;
+
         error = input_register_device(input_dev);
         if (error) {
                 dev_err(&pdev->dev, "Unable to register keyboard device\n");
+                clk_unprepare(kbd->clk);
                 return error;
         }
 
@@ -281,6 +286,11 @@ static int spear_kbd_probe(struct platform_device *pdev)
 
 static int spear_kbd_remove(struct platform_device *pdev)
 {
+        struct spear_kbd *kbd = platform_get_drvdata(pdev);
+
+        input_unregister_device(kbd->input);
+        clk_unprepare(kbd->clk);
+
         device_init_wakeup(&pdev->dev, 0);
         platform_set_drvdata(pdev, NULL);