1 files changed, 28 insertions, 8 deletions

diff --git a/drivers/media/usb/gspca/pac207.c b/drivers/media/usb/gspca/pac207.c
index d236d1791f78..3b75097dd34e 100644
--- a/drivers/media/usb/gspca/pac207.c
+++ b/drivers/media/usb/gspca/pac207.c
@@ -55,6 +55,11 @@ MODULE_LICENSE("GPL");
 
 #define PAC207_AUTOGAIN_DEADZONE        30
 
+/* global parameters */
+static int led_invert;
+module_param(led_invert, int, 0644);
+MODULE_PARM_DESC(led_invert, "Invert led");
+
 /* specific webcam descriptor */
 struct sd {
         struct gspca_dev gspca_dev;             /* !! must be the first item */
@@ -187,10 +192,14 @@ static int sd_config(struct gspca_dev *gspca_dev,
 /* this function is called at probe and resume time */
 static int sd_init(struct gspca_dev *gspca_dev)
 {
-        pac207_write_reg(gspca_dev, 0x41, 0x00);
-                                /* Bit_0=Image Format,
-                                 * Bit_1=LED,
-                                 * Bit_2=Compression test mode enable */
+        u8 mode;
+
+        /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+        if (led_invert)
+                mode = 0x02;
+        else
+                mode = 0x00;
+        pac207_write_reg(gspca_dev, 0x41, mode);
         pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
 
         return gspca_dev->usb_err;
@@ -303,7 +312,11 @@ static int sd_start(struct gspca_dev *gspca_dev)
         pac207_write_reg(gspca_dev, 0x02,
                 v4l2_ctrl_g_ctrl(gspca_dev->exposure)); /* PXCK = 12MHz /n */
 
-        mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */
+        /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+        if (led_invert)
+                mode = 0x00;
+        else
+                mode = 0x02;
         if (gspca_dev->width == 176) {  /* 176x144 */
                 mode |= 0x01;
                 PDEBUG(D_STREAM, "pac207_start mode 176x144");
@@ -325,8 +338,15 @@ static int sd_start(struct gspca_dev *gspca_dev)
 
 static void sd_stopN(struct gspca_dev *gspca_dev)
 {
+        u8 mode;
+
+        /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+        if (led_invert)
+                mode = 0x02;
+        else
+                mode = 0x00;
         pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */
-        pac207_write_reg(gspca_dev, 0x41, 0x00); /* Turn of LED */
+        pac207_write_reg(gspca_dev, 0x41, mode); /* Turn off LED */
         pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
 }
 
@@ -393,7 +413,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
         gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
 }
 
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+#if IS_ENABLED(CONFIG_INPUT)
 static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
                         u8 *data,               /* interrupt packet data */
                         int len)                /* interrput packet length */
@@ -422,7 +442,7 @@ static const struct sd_desc sd_desc = {
         .stopN = sd_stopN,
         .dq_callback = pac207_do_auto_gain,
         .pkt_scan = sd_pkt_scan,
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+#if IS_ENABLED(CONFIG_INPUT)
         .int_pkt_scan = sd_int_pkt_scan,
 #endif
 };