HID: logitech-hidpp: make hidpp10_set_register_bit a bit more generic

Make hidpp10_set_register_bit() take a mask and value for the register
byte being changed, rather then making it only set a single bit.

While at it also at defines for the bits which we will be using.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 5ef3f76c3f66816c2faed2c21a460e52ea0da673..2b769766e158e9c3eba9cf6ff72a6746b5d220bd 100644 (file)
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -491,14 +491,16 @@ static void hidpp_scroll_counter_handle_scroll(struct input_dev *input_dev,
 #define HIDPP_GET_LONG_REGISTER                                0x83
 
 /**
- * hidpp10_set_register_bit() - Sets a single bit in a HID++ 1.0 register.
+ * hidpp10_set_register - Modify a HID++ 1.0 register.
  * @hidpp_dev: the device to set the register on.
  * @register_address: the address of the register to modify.
  * @byte: the byte of the register to modify. Should be less than 3.
+ * @mask: mask of the bits to modify
+ * @value: new values for the bits in mask
  * Return: 0 if successful, otherwise a negative error code.
  */
-static int hidpp10_set_register_bit(struct hidpp_device *hidpp_dev,
-       u8 register_address, u8 byte, u8 bit)
+static int hidpp10_set_register(struct hidpp_device *hidpp_dev,
+       u8 register_address, u8 byte, u8 mask, u8 value)
 {
        struct hidpp_report response;
        int ret;
@@ -514,7 +516,8 @@ static int hidpp10_set_register_bit(struct hidpp_device *hidpp_dev,
 
        memcpy(params, response.rap.params, 3);
 
-       params[byte] |= BIT(bit);
+       params[byte] &= ~mask;
+       params[byte] |= value & mask;
 
        return hidpp_send_rap_command_sync(hidpp_dev,
                                           REPORT_ID_HIDPP_SHORT,
@@ -523,20 +526,28 @@ static int hidpp10_set_register_bit(struct hidpp_device *hidpp_dev,
                                           params, 3, &response);
 }
 
-
-#define HIDPP_REG_GENERAL                              0x00
+#define HIDPP_REG_ENABLE_REPORTS                       0x00
+#define HIDPP_ENABLE_CONSUMER_REPORT                   BIT(0)
+#define HIDPP_ENABLE_WHEEL_REPORT                      BIT(2)
+#define HIDPP_ENABLE_MOUSE_EXTRA_BTN_REPORT            BIT(3)
+#define HIDPP_ENABLE_BAT_REPORT                                BIT(4)
+#define HIDPP_ENABLE_HWHEEL_REPORT                     BIT(5)
 
 static int hidpp10_enable_battery_reporting(struct hidpp_device *hidpp_dev)
 {
-       return hidpp10_set_register_bit(hidpp_dev, HIDPP_REG_GENERAL, 0, 4);
+       return hidpp10_set_register(hidpp_dev, HIDPP_REG_ENABLE_REPORTS, 0,
+                         HIDPP_ENABLE_BAT_REPORT, HIDPP_ENABLE_BAT_REPORT);
 }
 
 #define HIDPP_REG_FEATURES                             0x01
+#define HIDPP_ENABLE_SPECIAL_BUTTON_FUNC               BIT(1)
+#define HIDPP_ENABLE_FAST_SCROLL                       BIT(6)
 
 /* On HID++ 1.0 devices, high-res scroll was called "scrolling acceleration". */
 static int hidpp10_enable_scrolling_acceleration(struct hidpp_device *hidpp_dev)
 {
-       return hidpp10_set_register_bit(hidpp_dev, HIDPP_REG_FEATURES, 0, 6);
+       return hidpp10_set_register(hidpp_dev, HIDPP_REG_FEATURES, 0,
+                         HIDPP_ENABLE_FAST_SCROLL, HIDPP_ENABLE_FAST_SCROLL);
 }
 
 #define HIDPP_REG_BATTERY_STATUS                       0x07