Hello,
The following patch introduces a new function that writes to a single
register. This is useful because the vast majority of register writes
are a single register, and this format permits or'ing register value
bits together.
Please let me know if you have any questions,
Devin
--
Devin J. Heitmueller
http://www.devinheitmueller.com
AIM: devinheitmueller
em28xx: add em28xx_write_reg() function
From: Devin Heitmueller <devin.heitmueller@xxxxxxxxx>
Introduce a new function that writes to a single register. This is
useful because the vast majority of register writes are a single
register, and this format permits or'ing register value bits together.
Signed-off-by: Devin Heitmueller <devin.heitmueller@xxxxxxxxx>
Index: v4l-dvb/linux/drivers/media/video/em28xx/em28xx-core.c
===================================================================
--- v4l-dvb.orig/linux/drivers/media/video/em28xx/em28xx-core.c 2008-11-19 23:36:10.000000000 -0500
+++ v4l-dvb/linux/drivers/media/video/em28xx/em28xx-core.c 2008-11-19 23:37:16.000000000 -0500
@@ -196,6 +196,12 @@
return rc;
}
+/* Write a single register */
+int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val)
+{
+ return em28xx_write_regs(dev, reg, &val, 1);
+}
+
/*
* em28xx_write_reg_bits()
* sets only some bits (specified by bitmask) of a register, by first reading
Index: v4l-dvb/linux/drivers/media/video/em28xx/em28xx.h
===================================================================
--- v4l-dvb.orig/linux/drivers/media/video/em28xx/em28xx.h 2008-11-19 23:36:03.000000000 -0500
+++ v4l-dvb/linux/drivers/media/video/em28xx/em28xx.h 2008-11-19 23:37:42.000000000 -0500
@@ -553,6 +553,8 @@
int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
int len);
int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
+int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
+
int em28xx_audio_analog_set(struct em28xx *dev);
int em28xx_audio_setup(struct em28xx *dev);
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