From 2f94fc465a6504443bb986ba9d36e28e2b422c6e Mon Sep 17 00:00:00 2001 From: Tobias Lorenz Date: Thu, 12 Feb 2009 14:56:19 -0300 Subject: [PATCH] V4L/DVB (10533): fix LED status output This patch closes one of my todos that was since long on my list. Some people reported clicks and glitches in the audio stream, correlated to the LED color changing cycle. Thanks to Rick Bronson . Signed-off-by: Tobias Lorenz Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-si470x.c | 34 +++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c index fd81a97a0fdb..4dfed6aa2dbc 100644 --- a/drivers/media/radio/radio-si470x.c +++ b/drivers/media/radio/radio-si470x.c @@ -101,11 +101,13 @@ * 2009-01-31 Bob Ross * - correction of stereo detection/setting * - correction of signal strength indicator scaling + * 2009-01-31 Rick Bronson + * Tobias Lorenz + * - add LED status output * * ToDo: * - add firmware download/update support * - RDS support: interrupt mode, instead of polling - * - add LED status output (check if that's not already done in firmware) */ @@ -884,6 +886,30 @@ static int si470x_rds_on(struct si470x_device *radio) +/************************************************************************** + * General Driver Functions - LED_REPORT + **************************************************************************/ + +/* + * si470x_set_led_state - sets the led state + */ +static int si470x_set_led_state(struct si470x_device *radio, + unsigned char led_state) +{ + unsigned char buf[LED_REPORT_SIZE]; + int retval; + + buf[0] = LED_REPORT; + buf[1] = LED_COMMAND; + buf[2] = led_state; + + retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); + + return (retval < 0) ? -EINVAL : 0; +} + + + /************************************************************************** * RDS Driver Functions **************************************************************************/ @@ -1637,6 +1663,9 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, /* set initial frequency */ si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ + /* set led to connect state */ + si470x_set_led_state(radio, BLINK_GREEN_LED); + /* rds buffer allocation */ radio->buf_size = rds_buf * 3; radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); @@ -1720,6 +1749,9 @@ static void si470x_usb_driver_disconnect(struct usb_interface *intf) cancel_delayed_work_sync(&radio->work); usb_set_intfdata(intf, NULL); if (radio->users == 0) { + /* set led to disconnect state */ + si470x_set_led_state(radio, BLINK_ORANGE_LED); + video_unregister_device(radio->videodev); kfree(radio->buffer); kfree(radio);