[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/media/i2c/tda7432.c b/src/kernel/linux/v4.14/drivers/media/i2c/tda7432.c
new file mode 100644
index 0000000..d87168a
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/media/i2c/tda7432.c
@@ -0,0 +1,419 @@
+/*
+ * For the STS-Thompson TDA7432 audio processor chip
+ *
+ * Handles audio functions: volume, balance, tone, loudness
+ * This driver will not complain if used with any
+ * other i2c device with the same address.
+ *
+ * Muting and tone control by Jonathan Isom <jisom@ematic.com>
+ *
+ * Copyright (c) 2000 Eric Sandeen <eric_sandeen@bigfoot.com>
+ * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
+ * This code is placed under the terms of the GNU General Public License
+ * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
+ * Which was based on tda8425.c by Greg Alexander (c) 1998
+ *
+ * OPTIONS:
+ * debug - set to 1 if you'd like to see debug messages
+ * set to 2 if you'd like to be inundated with debug messages
+ *
+ * loudness - set between 0 and 15 for varying degrees of loudness effect
+ *
+ * maxvol - set maximium volume to +20db (1), default is 0db(0)
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <linux/i2c.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/i2c-addr.h>
+
+#ifndef VIDEO_AUDIO_BALANCE
+# define VIDEO_AUDIO_BALANCE 32
+#endif
+
+MODULE_AUTHOR("Eric Sandeen <eric_sandeen@bigfoot.com>");
+MODULE_DESCRIPTION("bttv driver for the tda7432 audio processor chip");
+MODULE_LICENSE("GPL");
+
+static int maxvol;
+static int loudness; /* disable loudness by default */
+static int debug; /* insmod parameter */
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Set debugging level from 0 to 3. Default is off(0).");
+module_param(loudness, int, S_IRUGO);
+MODULE_PARM_DESC(loudness, "Turn loudness on(1) else off(0). Default is off(0).");
+module_param(maxvol, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(maxvol, "Set maximium volume to +20dB(0) else +0dB(1). Default is +20dB(0).");
+
+
+/* Structure of address and subaddresses for the tda7432 */
+
+struct tda7432 {
+ struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ struct {
+ /* bass/treble cluster */
+ struct v4l2_ctrl *bass;
+ struct v4l2_ctrl *treble;
+ };
+ struct {
+ /* mute/balance cluster */
+ struct v4l2_ctrl *mute;
+ struct v4l2_ctrl *balance;
+ };
+};
+
+static inline struct tda7432 *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct tda7432, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct tda7432, hdl)->sd;
+}
+
+/* The TDA7432 is made by STS-Thompson
+ * http://www.st.com
+ * http://us.st.com/stonline/books/pdf/docs/4056.pdf
+ *
+ * TDA7432: I2C-bus controlled basic audio processor
+ *
+ * The TDA7432 controls basic audio functions like volume, balance,
+ * and tone control (including loudness). It also has four channel
+ * output (for front and rear). Since most vidcap cards probably
+ * don't have 4 channel output, this driver will set front & rear
+ * together (no independent control).
+ */
+
+ /* Subaddresses for TDA7432 */
+
+#define TDA7432_IN 0x00 /* Input select */
+#define TDA7432_VL 0x01 /* Volume */
+#define TDA7432_TN 0x02 /* Bass, Treble (Tone) */
+#define TDA7432_LF 0x03 /* Attenuation LF (Left Front) */
+#define TDA7432_LR 0x04 /* Attenuation LR (Left Rear) */
+#define TDA7432_RF 0x05 /* Attenuation RF (Right Front) */
+#define TDA7432_RR 0x06 /* Attenuation RR (Right Rear) */
+#define TDA7432_LD 0x07 /* Loudness */
+
+
+ /* Masks for bits in TDA7432 subaddresses */
+
+/* Many of these not used - just for documentation */
+
+/* Subaddress 0x00 - Input selection and bass control */
+
+/* Bits 0,1,2 control input:
+ * 0x00 - Stereo input
+ * 0x02 - Mono input
+ * 0x03 - Mute (Using Attenuators Plays better with modules)
+ * Mono probably isn't used - I'm guessing only the stereo
+ * input is connected on most cards, so we'll set it to stereo.
+ *
+ * Bit 3 controls bass cut: 0/1 is non-symmetric/symmetric bass cut
+ * Bit 4 controls bass range: 0/1 is extended/standard bass range
+ *
+ * Highest 3 bits not used
+ */
+
+#define TDA7432_STEREO_IN 0
+#define TDA7432_MONO_IN 2 /* Probably won't be used */
+#define TDA7432_BASS_SYM 1 << 3
+#define TDA7432_BASS_NORM 1 << 4
+
+/* Subaddress 0x01 - Volume */
+
+/* Lower 7 bits control volume from -79dB to +32dB in 1dB steps
+ * Recommended maximum is +20 dB
+ *
+ * +32dB: 0x00
+ * +20dB: 0x0c
+ * 0dB: 0x20
+ * -79dB: 0x6f
+ *
+ * MSB (bit 7) controls loudness: 1/0 is loudness on/off
+ */
+
+#define TDA7432_VOL_0DB 0x20
+#define TDA7432_LD_ON 1 << 7
+
+
+/* Subaddress 0x02 - Tone control */
+
+/* Bits 0,1,2 control absolute treble gain from 0dB to 14dB
+ * 0x0 is 14dB, 0x7 is 0dB
+ *
+ * Bit 3 controls treble attenuation/gain (sign)
+ * 1 = gain (+)
+ * 0 = attenuation (-)
+ *
+ * Bits 4,5,6 control absolute bass gain from 0dB to 14dB
+ * (This is only true for normal base range, set in 0x00)
+ * 0x0 << 4 is 14dB, 0x7 is 0dB
+ *
+ * Bit 7 controls bass attenuation/gain (sign)
+ * 1 << 7 = gain (+)
+ * 0 << 7 = attenuation (-)
+ *
+ * Example:
+ * 1 1 0 1 0 1 0 1 is +4dB bass, -4dB treble
+ */
+
+#define TDA7432_TREBLE_0DB 0xf
+#define TDA7432_TREBLE 7
+#define TDA7432_TREBLE_GAIN 1 << 3
+#define TDA7432_BASS_0DB 0xf
+#define TDA7432_BASS 7 << 4
+#define TDA7432_BASS_GAIN 1 << 7
+
+
+/* Subaddress 0x03 - Left Front attenuation */
+/* Subaddress 0x04 - Left Rear attenuation */
+/* Subaddress 0x05 - Right Front attenuation */
+/* Subaddress 0x06 - Right Rear attenuation */
+
+/* Bits 0,1,2,3,4 control attenuation from 0dB to -37.5dB
+ * in 1.5dB steps.
+ *
+ * 0x00 is 0dB
+ * 0x1f is -37.5dB
+ *
+ * Bit 5 mutes that channel when set (1 = mute, 0 = unmute)
+ * We'll use the mute on the input, though (above)
+ * Bits 6,7 unused
+ */
+
+#define TDA7432_ATTEN_0DB 0x00
+#define TDA7432_MUTE 0x1 << 5
+
+
+/* Subaddress 0x07 - Loudness Control */
+
+/* Bits 0,1,2,3 control loudness from 0dB to -15dB in 1dB steps
+ * when bit 4 is NOT set
+ *
+ * 0x0 is 0dB
+ * 0xf is -15dB
+ *
+ * If bit 4 is set, then there is a flat attenuation according to
+ * the lower 4 bits, as above.
+ *
+ * Bits 5,6,7 unused
+ */
+
+
+
+/* Begin code */
+
+static int tda7432_write(struct v4l2_subdev *sd, int subaddr, int val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ unsigned char buffer[2];
+
+ v4l2_dbg(2, debug, sd, "In tda7432_write\n");
+ v4l2_dbg(1, debug, sd, "Writing %d 0x%x\n", subaddr, val);
+ buffer[0] = subaddr;
+ buffer[1] = val;
+ if (2 != i2c_master_send(client, buffer, 2)) {
+ v4l2_err(sd, "I/O error, trying (write %d 0x%x)\n",
+ subaddr, val);
+ return -1;
+ }
+ return 0;
+}
+
+static int tda7432_set(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ unsigned char buf[16];
+
+ buf[0] = TDA7432_IN;
+ buf[1] = TDA7432_STEREO_IN | /* Main (stereo) input */
+ TDA7432_BASS_SYM | /* Symmetric bass cut */
+ TDA7432_BASS_NORM; /* Normal bass range */
+ buf[2] = 0x3b;
+ if (loudness) /* Turn loudness on? */
+ buf[2] |= TDA7432_LD_ON;
+ buf[3] = TDA7432_TREBLE_0DB | (TDA7432_BASS_0DB << 4);
+ buf[4] = TDA7432_ATTEN_0DB;
+ buf[5] = TDA7432_ATTEN_0DB;
+ buf[6] = TDA7432_ATTEN_0DB;
+ buf[7] = TDA7432_ATTEN_0DB;
+ buf[8] = loudness;
+ if (9 != i2c_master_send(client, buf, 9)) {
+ v4l2_err(sd, "I/O error, trying tda7432_set\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int tda7432_log_status(struct v4l2_subdev *sd)
+{
+ struct tda7432 *state = to_state(sd);
+
+ v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
+ return 0;
+}
+
+static int tda7432_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = to_sd(ctrl);
+ struct tda7432 *t = to_state(sd);
+ u8 bass, treble, volume;
+ u8 lf, lr, rf, rr;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ if (t->balance->val < 0) {
+ /* shifted to left, attenuate right */
+ rr = rf = -t->balance->val;
+ lr = lf = TDA7432_ATTEN_0DB;
+ } else if (t->balance->val > 0) {
+ /* shifted to right, attenuate left */
+ rr = rf = TDA7432_ATTEN_0DB;
+ lr = lf = t->balance->val;
+ } else {
+ /* centered */
+ rr = rf = TDA7432_ATTEN_0DB;
+ lr = lf = TDA7432_ATTEN_0DB;
+ }
+ if (t->mute->val) {
+ lf |= TDA7432_MUTE;
+ lr |= TDA7432_MUTE;
+ rf |= TDA7432_MUTE;
+ rr |= TDA7432_MUTE;
+ }
+ /* Mute & update balance*/
+ tda7432_write(sd, TDA7432_LF, lf);
+ tda7432_write(sd, TDA7432_LR, lr);
+ tda7432_write(sd, TDA7432_RF, rf);
+ tda7432_write(sd, TDA7432_RR, rr);
+ return 0;
+ case V4L2_CID_AUDIO_VOLUME:
+ volume = 0x6f - ctrl->val;
+ if (loudness) /* Turn on the loudness bit */
+ volume |= TDA7432_LD_ON;
+
+ tda7432_write(sd, TDA7432_VL, volume);
+ return 0;
+ case V4L2_CID_AUDIO_BASS:
+ bass = t->bass->val;
+ treble = t->treble->val;
+ if (bass >= 0x8)
+ bass = 14 - (bass - 8);
+ if (treble >= 0x8)
+ treble = 14 - (treble - 8);
+
+ tda7432_write(sd, TDA7432_TN, 0x10 | (bass << 4) | treble);
+ return 0;
+ }
+ return -EINVAL;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_ctrl_ops tda7432_ctrl_ops = {
+ .s_ctrl = tda7432_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops tda7432_core_ops = {
+ .log_status = tda7432_log_status,
+};
+
+static const struct v4l2_subdev_ops tda7432_ops = {
+ .core = &tda7432_core_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+/* *********************** *
+ * i2c interface functions *
+ * *********************** */
+
+static int tda7432_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tda7432 *t;
+ struct v4l2_subdev *sd;
+
+ v4l_info(client, "chip found @ 0x%02x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
+ if (!t)
+ return -ENOMEM;
+ sd = &t->sd;
+ v4l2_i2c_subdev_init(sd, client, &tda7432_ops);
+ v4l2_ctrl_handler_init(&t->hdl, 5);
+ v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
+ V4L2_CID_AUDIO_VOLUME, 0, maxvol ? 0x68 : 0x4f, 1, maxvol ? 0x5d : 0x47);
+ t->mute = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
+ t->balance = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
+ V4L2_CID_AUDIO_BALANCE, -31, 31, 1, 0);
+ t->bass = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
+ V4L2_CID_AUDIO_BASS, 0, 14, 1, 7);
+ t->treble = v4l2_ctrl_new_std(&t->hdl, &tda7432_ctrl_ops,
+ V4L2_CID_AUDIO_TREBLE, 0, 14, 1, 7);
+ sd->ctrl_handler = &t->hdl;
+ if (t->hdl.error) {
+ int err = t->hdl.error;
+
+ v4l2_ctrl_handler_free(&t->hdl);
+ return err;
+ }
+ v4l2_ctrl_cluster(2, &t->bass);
+ v4l2_ctrl_cluster(2, &t->mute);
+ v4l2_ctrl_handler_setup(&t->hdl);
+ if (loudness < 0 || loudness > 15) {
+ v4l2_warn(sd, "loudness parameter must be between 0 and 15\n");
+ if (loudness < 0)
+ loudness = 0;
+ if (loudness > 15)
+ loudness = 15;
+ }
+
+ tda7432_set(sd);
+ return 0;
+}
+
+static int tda7432_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct tda7432 *t = to_state(sd);
+
+ tda7432_set(sd);
+ v4l2_device_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(&t->hdl);
+ return 0;
+}
+
+static const struct i2c_device_id tda7432_id[] = {
+ { "tda7432", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tda7432_id);
+
+static struct i2c_driver tda7432_driver = {
+ .driver = {
+ .name = "tda7432",
+ },
+ .probe = tda7432_probe,
+ .remove = tda7432_remove,
+ .id_table = tda7432_id,
+};
+
+module_i2c_driver(tda7432_driver);