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Date: Fri, 15 May 2015 23:31:51 +0200
From: Pali Rohár <pali.rohar@...il.com>
To: Mauro Carvalho Chehab <mchehab@....samsung.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Hans Verkuil <hans.verkuil@...co.com>,
Pavel Machek <pavel@....cz>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
maxx <maxx@...ceboyz.net>,
Pali Rohár <pali.rohar@...il.com>
Subject: [PATCH] radio-bcm2048: Enable access to automute and ctrl registers
From: maxx <maxx@...ceboyz.net>
This enables access to automute function of the chip via sysfs and
gives direct access to FM_AUDIO_CTRL0/1 registers, also via sysfs. I
don't think this is so important but helps in developing radio scanner
apps.
Patch writen by maxx@...ceboyz.net
Signed-off-by: Pali Rohár <pali.rohar@...il.com>
Cc: maxx@...ceboyz.net
---
drivers/staging/media/bcm2048/radio-bcm2048.c | 96 +++++++++++++++++++++++++
1 file changed, 96 insertions(+)
diff --git a/drivers/staging/media/bcm2048/radio-bcm2048.c b/drivers/staging/media/bcm2048/radio-bcm2048.c
index 1482d4b..8f9ba7b 100644
--- a/drivers/staging/media/bcm2048/radio-bcm2048.c
+++ b/drivers/staging/media/bcm2048/radio-bcm2048.c
@@ -826,6 +826,93 @@ static int bcm2048_get_mute(struct bcm2048_device *bdev)
return err;
}
+static int bcm2048_set_automute(struct bcm2048_device *bdev, u8 automute)
+{
+ int err;
+
+ mutex_lock(&bdev->mutex);
+
+ err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_PAUSE, automute);
+
+ mutex_unlock(&bdev->mutex);
+ return err;
+}
+
+static int bcm2048_get_automute(struct bcm2048_device *bdev)
+{
+ int err;
+ u8 value;
+
+ mutex_lock(&bdev->mutex);
+
+ err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_PAUSE, &value);
+
+ mutex_unlock(&bdev->mutex);
+
+ if (!err)
+ err = value;
+
+ return err;
+}
+
+static int bcm2048_set_ctrl0(struct bcm2048_device *bdev, u8 value)
+{
+ int err;
+
+ mutex_lock(&bdev->mutex);
+
+ err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, value);
+
+ mutex_unlock(&bdev->mutex);
+ return err;
+}
+
+static int bcm2048_set_ctrl1(struct bcm2048_device *bdev, u8 value)
+{
+ int err;
+
+ mutex_lock(&bdev->mutex);
+
+ err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL1, value);
+
+ mutex_unlock(&bdev->mutex);
+ return err;
+}
+
+static int bcm2048_get_ctrl0(struct bcm2048_device *bdev)
+{
+ int err;
+ u8 value;
+
+ mutex_lock(&bdev->mutex);
+
+ err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, &value);
+
+ mutex_unlock(&bdev->mutex);
+
+ if (!err)
+ err = value;
+
+ return err;
+}
+
+static int bcm2048_get_ctrl1(struct bcm2048_device *bdev)
+{
+ int err;
+ u8 value;
+
+ mutex_lock(&bdev->mutex);
+
+ err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL1, &value);
+
+ mutex_unlock(&bdev->mutex);
+
+ if (!err)
+ err = value;
+
+ return err;
+}
+
static int bcm2048_set_audio_route(struct bcm2048_device *bdev, u8 route)
{
int err;
@@ -2058,6 +2145,9 @@ static ssize_t bcm2048_##prop##_read(struct device *dev, \
DEFINE_SYSFS_PROPERTY(power_state, unsigned, int, "%u", 0)
DEFINE_SYSFS_PROPERTY(mute, unsigned, int, "%u", 0)
+DEFINE_SYSFS_PROPERTY(automute, unsigned, int, "%x", 0)
+DEFINE_SYSFS_PROPERTY(ctrl0, unsigned, int, "%x", 0)
+DEFINE_SYSFS_PROPERTY(ctrl1, unsigned, int, "%x", 0)
DEFINE_SYSFS_PROPERTY(audio_route, unsigned, int, "%u", 0)
DEFINE_SYSFS_PROPERTY(dac_output, unsigned, int, "%u", 0)
@@ -2095,6 +2185,12 @@ static struct device_attribute attrs[] = {
bcm2048_power_state_write),
__ATTR(mute, S_IRUGO | S_IWUSR, bcm2048_mute_read,
bcm2048_mute_write),
+ __ATTR(automute, S_IRUGO | S_IWUSR, bcm2048_automute_read,
+ bcm2048_automute_write),
+ __ATTR(ctrl0, S_IRUGO | S_IWUSR, bcm2048_ctrl0_read,
+ bcm2048_ctrl0_write),
+ __ATTR(ctrl1, S_IRUGO | S_IWUSR, bcm2048_ctrl1_read,
+ bcm2048_ctrl1_write),
__ATTR(audio_route, S_IRUGO | S_IWUSR, bcm2048_audio_route_read,
bcm2048_audio_route_write),
__ATTR(dac_output, S_IRUGO | S_IWUSR, bcm2048_dac_output_read,
--
1.7.9.5
--
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