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authorMauro Carvalho Chehab <mchehab@redhat.com>2013-04-30 09:01:04 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-04-30 09:01:04 -0300
commitdf90e2258950fd631cdbf322c1ee1f22068391aa (patch)
tree0b6dd2717c04bb7f93db6abdeda208aeea4cd74e /drivers/media/i2c/uda1342.c
parentaad797c89903d570c17f6affc770eb98afd74e62 (diff)
parent02615ed5e1b2283db2495af3cf8f4ee172c77d80 (diff)
downloadvexpress-lsk-df90e2258950fd631cdbf322c1ee1f22068391aa.tar.gz
Merge branch 'devel-for-v3.10' into v4l_for_linus
* patchwork: (831 commits) [media] cx88: make core less verbose [media] em28xx: fix oops at em28xx_dvb_bus_ctrl() [media] s5c73m3: fix indentation of the help section in Kconfig [media] cx25821-alsa: get rid of a __must_check warning [media] cx25821-video: declare cx25821_vidioc_s_std as static [media] cx25821-video: remove maxw from cx25821_vidioc_try_fmt_vid_cap [media] r820t: Remove a warning for an unused value [media] dib0090: Fix a warning at dib0090_set_EFUSE [media] dib8000: fix a warning [media] dib8000: Fix sub-channel range [media] dib8000: store dtv_property_cache in a temp var [media] dib8000: warning fix: declare internal functions as static [media] r820t: quiet gcc warning on n_ring [media] r820t: memory leak in release() [media] r820t: precendence bug in r820t_xtal_check() [media] videodev2.h: Remove the unused old V4L1 buffer types [media] anysee: Grammar s/report the/report to/ [media] anysee: Initialize ret = 0 in anysee_frontend_attach() [media] media: videobuf2: fix the length check for mmap [media] em28xx: save isoc endpoint number for DVB only if endpoint has alt settings with xMaxPacketSize != 0 ... Conflicts: drivers/media/pci/cx25821/cx25821-video.c drivers/media/platform/Kconfig
Diffstat (limited to 'drivers/media/i2c/uda1342.c')
-rw-r--r--drivers/media/i2c/uda1342.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/media/i2c/uda1342.c b/drivers/media/i2c/uda1342.c
new file mode 100644
index 00000000000..3af408556d2
--- /dev/null
+++ b/drivers/media/i2c/uda1342.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2005-2006 Micronas USA Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/uda1342.h>
+#include <linux/slab.h>
+
+static int write_reg(struct i2c_client *client, int reg, int value)
+{
+ /* UDA1342 wants MSB first, but SMBus sends LSB first */
+ i2c_smbus_write_word_data(client, reg, swab16(value));
+ return 0;
+}
+
+static int uda1342_s_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ switch (input) {
+ case UDA1342_IN1:
+ write_reg(client, 0x00, 0x1241); /* select input 1 */
+ break;
+ case UDA1342_IN2:
+ write_reg(client, 0x00, 0x1441); /* select input 2 */
+ break;
+ default:
+ v4l2_err(sd, "input %d not supported\n", input);
+ break;
+ }
+ return 0;
+}
+
+static const struct v4l2_subdev_audio_ops uda1342_audio_ops = {
+ .s_routing = uda1342_s_routing,
+};
+
+static const struct v4l2_subdev_ops uda1342_ops = {
+ .audio = &uda1342_audio_ops,
+};
+
+static int uda1342_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ struct v4l2_subdev *sd;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
+ return -ENODEV;
+
+ dev_dbg(&client->dev, "initializing UDA1342 at address %d on %s\n",
+ client->addr, adapter->name);
+
+ sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+ if (sd == NULL)
+ return -ENOMEM;
+
+ v4l2_i2c_subdev_init(sd, client, &uda1342_ops);
+
+ write_reg(client, 0x00, 0x8000); /* reset registers */
+ write_reg(client, 0x00, 0x1241); /* select input 1 */
+
+ v4l_info(client, "chip found @ 0x%02x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ return 0;
+}
+
+static int uda1342_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(sd);
+ return 0;
+}
+
+static const struct i2c_device_id uda1342_id[] = {
+ { "uda1342", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, uda1342_id);
+
+static struct i2c_driver uda1342_driver = {
+ .driver = {
+ .name = "uda1342",
+ },
+ .probe = uda1342_probe,
+ .remove = uda1342_remove,
+ .id_table = uda1342_id,
+};
+
+module_i2c_driver(uda1342_driver);
+
+MODULE_LICENSE("GPL v2");