[1/2] gspca pac7302: add LED control

Commit Message

Németh Márton Feb. 24, 2010, 6:52 a.m. UTC

None

Patch

diff -r 4f102b2f7ac1 linux/drivers/media/video/gspca/pac7302.c
--- a/linux/drivers/media/video/gspca/pac7302.c	Thu Jan 28 20:35:40 2010 +0100
+++ b/linux/drivers/media/video/gspca/pac7302.c	Mon Feb 08 20:46:53 2010 +0100
@@ -6,6 +6,7 @@ 
  *
  * Separated from Pixart PAC7311 library by Márton Németh
  * Camera button input handling by Márton Németh <[e-mail]>
+ * LED control by Márton Németh <[e-mail]>
  * Copyright (C) 2009-2010 Márton Németh <[e-mail]>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -62,6 +63,7 @@ 
     0   | 0xc6       | setwhitebalance()
     0   | 0xc7       | setbluebalance()
     0   | 0xdc       | setbrightcont(), setcolors()
+    1   | 0x78       | set_streaming_led()
     3   | 0x02       | setexposure()
     3   | 0x10       | setgain()
     3   | 0x11       | setcolors(), setgain(), setexposure(), sethvflip()
@@ -78,6 +80,11 @@ 
 MODULE_DESCRIPTION("Pixart PAC7302");
 MODULE_LICENSE("GPL");

+#define PAC7302_CID_LED (V4L2_CID_PRIVATE_BASE + 0)
+#define LED_AUTO	0
+#define LED_ON		1
+#define LED_OFF		2
+
 /* specific webcam descriptor for pac7302 */
 struct sd {
 	struct gspca_dev gspca_dev;		/* !! must be the first item */
@@ -91,6 +98,7 @@ 
 	unsigned char gain;
 	unsigned char exposure;
 	unsigned char autogain;
+	unsigned char led;
 	__u8 hflip;
 	__u8 vflip;
 	u8 flags;
@@ -126,6 +134,8 @@ 
 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setled(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getled(struct gspca_dev *gspca_dev, __s32 *val);

 static const struct ctrl sd_ctrls[] = {
 /* This control is pac7302 only */
@@ -293,6 +303,20 @@ 
 	    .set = sd_setvflip,
 	    .get = sd_getvflip,
 	},
+	{
+	    {
+		.id      = PAC7302_CID_LED,
+		.type    = V4L2_CTRL_TYPE_MENU,
+		.name    = "LED",
+		.minimum = 0,
+		.maximum = 2,	/* 0: Auto, 1: On, 2: Off */
+		.step    = 1,
+#define LED_DEF 0
+		.default_value = LED_DEF,
+	    },
+	    .set = sd_setled,
+	    .get = sd_getled,
+	},
 };

 static const struct v4l2_pix_format vga_mode[] = {
@@ -572,6 +596,7 @@ 
 	sd->gain = GAIN_DEF;
 	sd->exposure = EXPOSURE_DEF;
 	sd->autogain = AUTOGAIN_DEF;
+	sd->led = LED_DEF;
 	sd->hflip = HFLIP_DEF;
 	sd->vflip = VFLIP_DEF;
 	sd->flags = id->driver_info;
@@ -716,6 +741,36 @@ 
 	reg_w(gspca_dev, 0x11, 0x01);
 }

+static void set_streaming_led(struct gspca_dev *gspca_dev, u8 streaming)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	u8 data = 0;
+
+	switch (sd->led) {
+	case LED_AUTO:
+		if (streaming)
+			data = 0x01;
+		else
+			data = 0x40;
+		break;
+	case LED_ON:
+		if (streaming)
+			data = 0x01;
+		else
+			data = 0x00;
+		break;
+	case LED_OFF:
+		if (streaming)
+			data = 0x41;
+		else
+			data = 0x40;
+		break;
+	}
+
+	reg_w(gspca_dev, 0xff, 0x01);
+	reg_w(gspca_dev, 0x78, data);
+}
+
 /* this function is called at probe and resume time for pac7302 */
 static int sd_init(struct gspca_dev *gspca_dev)
 {
@@ -747,18 +802,15 @@ 
 	atomic_set(&sd->avg_lum, -1);

 	/* start stream */
-	reg_w(gspca_dev, 0xff, 0x01);
-	reg_w(gspca_dev, 0x78, 0x01);
+	set_streaming_led(gspca_dev, 1);

 	return gspca_dev->usb_err;
 }

 static void sd_stopN(struct gspca_dev *gspca_dev)
 {
-
 	/* stop stream */
-	reg_w(gspca_dev, 0xff, 0x01);
-	reg_w(gspca_dev, 0x78, 0x00);
+	set_streaming_led(gspca_dev, 0);
 }

 /* called on streamoff with alt 0 and on disconnect for pac7302 */
@@ -766,8 +818,7 @@ 
 {
 	if (!gspca_dev->present)
 		return;
-	reg_w(gspca_dev, 0xff, 0x01);
-	reg_w(gspca_dev, 0x78, 0x40);
+	set_streaming_led(gspca_dev, 0);
 }

 /* Include pac common sof detection functions */
@@ -1121,6 +1172,44 @@ 
 	return 0;
 }

+static int sd_setled(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	sd->led = val;
+	set_streaming_led(gspca_dev, gspca_dev->streaming);
+	return gspca_dev->usb_err;
+}
+
+static int sd_getled(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	*val = sd->led;
+	return 0;
+}
+
+static int sd_querymenu(struct gspca_dev *gspca_dev,
+			struct v4l2_querymenu *menu)
+{
+	switch (menu->id) {
+	case PAC7302_CID_LED:
+		switch (menu->index) {
+		case LED_AUTO:
+			strcpy((char *)menu->name, "Auto");
+			return 0;
+		case LED_OFF:
+			strcpy((char *)menu->name, "Off");
+			return 0;
+		case LED_ON:
+			strcpy((char *)menu->name, "On");
+			return 0;
+		}
+		break;
+	}
+	return -EINVAL;
+}
+
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
 			struct v4l2_dbg_register *reg)
@@ -1210,6 +1299,7 @@ 
 	.stop0 = sd_stop0,
 	.pkt_scan = sd_pkt_scan,
 	.dq_callback = do_autogain,
+	.querymenu = sd_querymenu,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.set_register = sd_dbg_s_register,
 	.get_chip_ident = sd_chip_ident,