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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:50:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:50:49 -0800
commit3e7468313758913c5e4d372f35b271b96bad1298 (patch)
treeeb612d252a9e2349a1173451cd779beebd18a33e /drivers/media/radio/tef6862.c
parent6825fbc4cb219f2c98bb7d157915d797cf5cb823 (diff)
parente97f4677961f68e29bd906022ebf60a6df7f530a (diff)
downloadop-kernel-dev-3e7468313758913c5e4d372f35b271b96bad1298.zip
op-kernel-dev-3e7468313758913c5e4d372f35b271b96bad1298.tar.gz
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (345 commits) V4L/DVB (13542): ir-keytable: Allow dynamic table change V4L/DVB (13541): atbm8830: replace 64-bit division and floating point usage V4L/DVB (13540): ir-common: Cleanup get key evdev code V4L/DVB (13539): ir-common: add __func__ for debug messages V4L/DVB (13538): ir-common: Use a dynamic keycode table V4L/DVB (13537): ir: Prepare the code for dynamic keycode table allocation V4L/DVB (13536): em28xx: Use the full RC5 code on HVR-950 Remote Controller V4L/DVB (13535): ir-common: Add a hauppauge new table with the complete RC5 code V4L/DVB (13534): ir-common: Remove some unused fields/structs V4L/DVB (13533): ir: use dynamic tables, instead of static ones V4L/DVB (13532): ir-common: Add infrastructure to use a dynamic keycode table V4L/DVB (13531): ir-common: rename the debug routine to allow exporting it V4L/DVB (13458): go7007: subdev conversion V4L/DVB (13457): s2250: subdev conversion V4L/DVB (13456): s2250: Change module structure V4L/DVB (13528): em28xx: add support for em2800 VC211A card em28xx: don't reduce scale to half size for em2800 em28xx: don't load audio modules when AC97 is mis-detected em28xx: em2800 chips support max width of 640 V4L/DVB (13523): dvb-bt8xx: fix compile warning ... Fix up trivial conflicts due to spelling fixes from the trivial tree in Documentation/video4linux/gspca.txt drivers/media/video/cx18/cx18-mailbox.h
Diffstat (limited to 'drivers/media/radio/tef6862.c')
-rw-r--r--drivers/media/radio/tef6862.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/media/radio/tef6862.c b/drivers/media/radio/tef6862.c
new file mode 100644
index 0000000..6e607ff
--- /dev/null
+++ b/drivers/media/radio/tef6862.c
@@ -0,0 +1,232 @@
+/*
+ * tef6862.c Philips TEF6862 Car Radio Enhanced Selectivity Tuner
+ * Copyright (c) 2009 Intel Corporation
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/i2c-id.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+
+#define DRIVER_NAME "tef6862"
+
+#define FREQ_MUL 16000
+
+#define TEF6862_LO_FREQ (875 * FREQ_MUL / 10)
+#define TEF6862_HI_FREQ (108 * FREQ_MUL)
+
+/* Write mode sub addresses */
+#define WM_SUB_BANDWIDTH 0x0
+#define WM_SUB_PLLM 0x1
+#define WM_SUB_PLLL 0x2
+#define WM_SUB_DAA 0x3
+#define WM_SUB_AGC 0x4
+#define WM_SUB_BAND 0x5
+#define WM_SUB_CONTROL 0x6
+#define WM_SUB_LEVEL 0x7
+#define WM_SUB_IFCF 0x8
+#define WM_SUB_IFCAP 0x9
+#define WM_SUB_ACD 0xA
+#define WM_SUB_TEST 0xF
+
+/* Different modes of the MSA register */
+#define MODE_BUFFER 0x0
+#define MODE_PRESET 0x1
+#define MODE_SEARCH 0x2
+#define MODE_AF_UPDATE 0x3
+#define MODE_JUMP 0x4
+#define MODE_CHECK 0x5
+#define MODE_LOAD 0x6
+#define MODE_END 0x7
+#define MODE_SHIFT 5
+
+struct tef6862_state {
+ struct v4l2_subdev sd;
+ unsigned long freq;
+};
+
+static inline struct tef6862_state *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct tef6862_state, sd);
+}
+
+static u16 tef6862_sigstr(struct i2c_client *client)
+{
+ u8 buf[4];
+ int err = i2c_master_recv(client, buf, sizeof(buf));
+ if (err == sizeof(buf))
+ return buf[3] << 8;
+ return 0;
+}
+
+static int tef6862_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
+{
+ if (v->index > 0)
+ return -EINVAL;
+
+ /* only support FM for now */
+ strlcpy(v->name, "FM", sizeof(v->name));
+ v->type = V4L2_TUNER_RADIO;
+ v->rangelow = TEF6862_LO_FREQ;
+ v->rangehigh = TEF6862_HI_FREQ;
+ v->rxsubchans = V4L2_TUNER_SUB_MONO;
+ v->capability = V4L2_TUNER_CAP_LOW;
+ v->audmode = V4L2_TUNER_MODE_STEREO;
+ v->signal = tef6862_sigstr(v4l2_get_subdevdata(sd));
+
+ return 0;
+}
+
+static int tef6862_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
+{
+ return v->index ? -EINVAL : 0;
+}
+
+static int tef6862_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+ struct tef6862_state *state = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u16 pll;
+ u8 i2cmsg[3];
+ int err;
+
+ if (f->tuner != 0)
+ return -EINVAL;
+
+ pll = 1964 + ((f->frequency - TEF6862_LO_FREQ) * 20) / FREQ_MUL;
+ i2cmsg[0] = (MODE_PRESET << MODE_SHIFT) | WM_SUB_PLLM;
+ i2cmsg[1] = (pll >> 8) & 0xff;
+ i2cmsg[2] = pll & 0xff;
+
+ err = i2c_master_send(client, i2cmsg, sizeof(i2cmsg));
+ if (!err)
+ state->freq = f->frequency;
+ return err;
+}
+
+static int tef6862_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+ struct tef6862_state *state = to_state(sd);
+
+ if (f->tuner != 0)
+ return -EINVAL;
+ f->type = V4L2_TUNER_RADIO;
+ f->frequency = state->freq;
+ return 0;
+}
+
+static int tef6862_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TEF6862, 0);
+}
+
+static const struct v4l2_subdev_tuner_ops tef6862_tuner_ops = {
+ .g_tuner = tef6862_g_tuner,
+ .s_tuner = tef6862_s_tuner,
+ .s_frequency = tef6862_s_frequency,
+ .g_frequency = tef6862_g_frequency,
+};
+
+static const struct v4l2_subdev_core_ops tef6862_core_ops = {
+ .g_chip_ident = tef6862_g_chip_ident,
+};
+
+static const struct v4l2_subdev_ops tef6862_ops = {
+ .core = &tef6862_core_ops,
+ .tuner = &tef6862_tuner_ops,
+};
+
+/*
+ * Generic i2c probe
+ * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
+ */
+
+static int __devinit tef6862_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tef6862_state *state;
+ struct v4l2_subdev *sd;
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ v4l_info(client, "chip found @ 0x%02x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ state = kmalloc(sizeof(struct tef6862_state), GFP_KERNEL);
+ if (state == NULL)
+ return -ENOMEM;
+ state->freq = TEF6862_LO_FREQ;
+
+ sd = &state->sd;
+ v4l2_i2c_subdev_init(sd, client, &tef6862_ops);
+
+ return 0;
+}
+
+static int __devexit tef6862_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_state(sd));
+ return 0;
+}
+
+static const struct i2c_device_id tef6862_id[] = {
+ {DRIVER_NAME, 0},
+ {},
+};
+
+MODULE_DEVICE_TABLE(i2c, tef6862_id);
+
+static struct i2c_driver tef6862_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ },
+ .probe = tef6862_probe,
+ .remove = tef6862_remove,
+ .id_table = tef6862_id,
+};
+
+static __init int tef6862_init(void)
+{
+ return i2c_add_driver(&tef6862_driver);
+}
+
+static __exit void tef6862_exit(void)
+{
+ i2c_del_driver(&tef6862_driver);
+}
+
+module_init(tef6862_init);
+module_exit(tef6862_exit);
+
+MODULE_DESCRIPTION("TEF6862 Car Radio Enhanced Selectivity Tuner");
+MODULE_AUTHOR("Mocean Laboratories");
+MODULE_LICENSE("GPL v2");
+
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