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path: root/drivers/media/i2c/sony-btf-mpx.c
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Diffstat (limited to 'drivers/media/i2c/sony-btf-mpx.c')
-rw-r--r--drivers/media/i2c/sony-btf-mpx.c382
1 files changed, 382 insertions, 0 deletions
diff --git a/drivers/media/i2c/sony-btf-mpx.c b/drivers/media/i2c/sony-btf-mpx.c
new file mode 100644
index 0000000000..0f53834f3a
--- /dev/null
+++ b/drivers/media/i2c/sony-btf-mpx.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2005-2006 Micronas USA Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/tuner.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <linux/slab.h>
+
+MODULE_DESCRIPTION("sony-btf-mpx driver");
+MODULE_LICENSE("GPL v2");
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on");
+
+/* #define MPX_DEBUG */
+
+/*
+ * Note:
+ *
+ * AS(IF/MPX) pin: LOW HIGH/OPEN
+ * IF/MPX address: 0x42/0x40 0x43/0x44
+ */
+
+
+static int force_mpx_mode = -1;
+module_param(force_mpx_mode, int, 0644);
+
+struct sony_btf_mpx {
+ struct v4l2_subdev sd;
+ int mpxmode;
+ u32 audmode;
+};
+
+static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct sony_btf_mpx, sd);
+}
+
+static int mpx_write(struct i2c_client *client, int dev, int addr, int val)
+{
+ u8 buffer[5];
+ struct i2c_msg msg;
+
+ buffer[0] = dev;
+ buffer[1] = addr >> 8;
+ buffer[2] = addr & 0xff;
+ buffer[3] = val >> 8;
+ buffer[4] = val & 0xff;
+ msg.addr = client->addr;
+ msg.flags = 0;
+ msg.len = 5;
+ msg.buf = buffer;
+ i2c_transfer(client->adapter, &msg, 1);
+ return 0;
+}
+
+/*
+ * MPX register values for the BTF-PG472Z:
+ *
+ * FM_ NICAM_ SCART_
+ * MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME
+ * 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000
+ * ---------------------------------------------------------------
+ * Auto 1003 0020 0100 2603 5000 XXXX 0001 7500
+ *
+ * B/G
+ * Mono 1003 0020 0100 2603 5000 XXXX 0003 7500
+ * A2 1003 0020 0100 2601 5000 XXXX 0003 7500
+ * NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500
+ *
+ * I
+ * Mono 1003 0020 0100 2603 7900 XXXX 000A 7500
+ * NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500
+ *
+ * D/K
+ * Mono 1003 0020 0100 2603 5000 XXXX 0004 7500
+ * A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500
+ * A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500
+ * A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500
+ * NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500
+ *
+ * L/L'
+ * Mono 0003 0200 0100 7C03 5000 2200 0009 7500
+ * NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500
+ *
+ * M
+ * Mono 1003 0200 0100 2B03 5000 2B00 0002 7500
+ *
+ * For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX.
+ *
+ * Bilingual selection in A2/NICAM:
+ *
+ * High byte of SOURCE Left chan Right chan
+ * 0x01 MAIN SUB
+ * 0x03 MAIN MAIN
+ * 0x04 SUB SUB
+ *
+ * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or
+ * 0x00 (all other bands). Force mono in A2 with FMONO_A2:
+ *
+ * FMONO_A2
+ * 10/0022
+ * --------
+ * Forced mono ON 07F0
+ * Forced mono OFF 0190
+ */
+
+static const struct {
+ enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode;
+ u16 modus;
+ u16 source;
+ u16 acb;
+ u16 fm_prescale;
+ u16 nicam_prescale;
+ u16 scart_prescale;
+ u16 system;
+ u16 volume;
+} mpx_audio_modes[] = {
+ /* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
+ 0x5000, 0x0000, 0x0001, 0x7500 },
+ /* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
+ 0x5000, 0x0000, 0x0003, 0x7500 },
+ /* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
+ 0x5000, 0x0000, 0x0003, 0x7500 },
+ /* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
+ 0x5000, 0x0000, 0x0008, 0x7500 },
+ /* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
+ 0x7900, 0x0000, 0x000A, 0x7500 },
+ /* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
+ 0x7900, 0x0000, 0x000A, 0x7500 },
+ /* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
+ 0x5000, 0x0000, 0x0004, 0x7500 },
+ /* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
+ 0x5000, 0x0000, 0x0004, 0x7500 },
+ /* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
+ 0x5000, 0x0000, 0x0005, 0x7500 },
+ /* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
+ 0x5000, 0x0000, 0x0007, 0x7500 },
+ /* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
+ 0x5000, 0x0000, 0x000B, 0x7500 },
+ /* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03,
+ 0x5000, 0x2200, 0x0009, 0x7500 },
+ /* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03,
+ 0x5000, 0x0000, 0x0009, 0x7500 },
+};
+
+#define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes)
+
+static int mpx_setup(struct sony_btf_mpx *t)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
+ u16 source = 0;
+ u8 buffer[3];
+ struct i2c_msg msg;
+ int mode = t->mpxmode;
+
+ /* reset MPX */
+ buffer[0] = 0x00;
+ buffer[1] = 0x80;
+ buffer[2] = 0x00;
+ msg.addr = client->addr;
+ msg.flags = 0;
+ msg.len = 3;
+ msg.buf = buffer;
+ i2c_transfer(client->adapter, &msg, 1);
+ buffer[1] = 0x00;
+ i2c_transfer(client->adapter, &msg, 1);
+
+ if (t->audmode != V4L2_TUNER_MODE_MONO)
+ mode++;
+
+ if (mpx_audio_modes[mode].audio_mode != AUD_MONO) {
+ switch (t->audmode) {
+ case V4L2_TUNER_MODE_MONO:
+ switch (mpx_audio_modes[mode].audio_mode) {
+ case AUD_A2:
+ source = mpx_audio_modes[mode].source;
+ break;
+ case AUD_NICAM:
+ source = 0x0000;
+ break;
+ case AUD_NICAM_L:
+ source = 0x0200;
+ break;
+ default:
+ break;
+ }
+ break;
+ case V4L2_TUNER_MODE_STEREO:
+ source = mpx_audio_modes[mode].source;
+ break;
+ case V4L2_TUNER_MODE_LANG1:
+ source = 0x0300;
+ break;
+ case V4L2_TUNER_MODE_LANG2:
+ source = 0x0400;
+ break;
+ }
+ source |= mpx_audio_modes[mode].source & 0x00ff;
+ } else
+ source = mpx_audio_modes[mode].source;
+
+ mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus);
+ mpx_write(client, 0x12, 0x0008, source);
+ mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb);
+ mpx_write(client, 0x12, 0x000e,
+ mpx_audio_modes[mode].fm_prescale);
+ mpx_write(client, 0x12, 0x0010,
+ mpx_audio_modes[mode].nicam_prescale);
+ mpx_write(client, 0x12, 0x000d,
+ mpx_audio_modes[mode].scart_prescale);
+ mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system);
+ mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume);
+ if (mpx_audio_modes[mode].audio_mode == AUD_A2)
+ mpx_write(client, 0x10, 0x0022,
+ t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);
+
+#ifdef MPX_DEBUG
+ {
+ u8 buf1[3], buf2[2];
+ struct i2c_msg msgs[2];
+
+ v4l2_info(client,
+ "MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n",
+ mpx_audio_modes[mode].modus,
+ source,
+ mpx_audio_modes[mode].acb,
+ mpx_audio_modes[mode].fm_prescale,
+ mpx_audio_modes[mode].nicam_prescale,
+ mpx_audio_modes[mode].scart_prescale,
+ mpx_audio_modes[mode].system,
+ mpx_audio_modes[mode].volume);
+ buf1[0] = 0x11;
+ buf1[1] = 0x00;
+ buf1[2] = 0x7e;
+ msgs[0].addr = client->addr;
+ msgs[0].flags = 0;
+ msgs[0].len = 3;
+ msgs[0].buf = buf1;
+ msgs[1].addr = client->addr;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = 2;
+ msgs[1].buf = buf2;
+ i2c_transfer(client->adapter, msgs, 2);
+ v4l2_info(client, "MPX system: %02x%02x\n",
+ buf2[0], buf2[1]);
+ buf1[0] = 0x11;
+ buf1[1] = 0x02;
+ buf1[2] = 0x00;
+ i2c_transfer(client->adapter, msgs, 2);
+ v4l2_info(client, "MPX status: %02x%02x\n",
+ buf2[0], buf2[1]);
+ }
+#endif
+ return 0;
+}
+
+
+static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct sony_btf_mpx *t = to_state(sd);
+ int default_mpx_mode = 0;
+
+ if (std & V4L2_STD_PAL_BG)
+ default_mpx_mode = 1;
+ else if (std & V4L2_STD_PAL_I)
+ default_mpx_mode = 4;
+ else if (std & V4L2_STD_PAL_DK)
+ default_mpx_mode = 6;
+ else if (std & V4L2_STD_SECAM_L)
+ default_mpx_mode = 11;
+
+ if (default_mpx_mode != t->mpxmode) {
+ t->mpxmode = default_mpx_mode;
+ mpx_setup(t);
+ }
+ return 0;
+}
+
+static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
+{
+ struct sony_btf_mpx *t = to_state(sd);
+
+ vt->capability = V4L2_TUNER_CAP_NORM |
+ V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
+ V4L2_TUNER_CAP_LANG2;
+ vt->rxsubchans = V4L2_TUNER_SUB_MONO |
+ V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 |
+ V4L2_TUNER_SUB_LANG2;
+ vt->audmode = t->audmode;
+ return 0;
+}
+
+static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
+{
+ struct sony_btf_mpx *t = to_state(sd);
+
+ if (vt->type != V4L2_TUNER_ANALOG_TV)
+ return -EINVAL;
+
+ if (vt->audmode != t->audmode) {
+ t->audmode = vt->audmode;
+ mpx_setup(t);
+ }
+ return 0;
+}
+
+/* --------------------------------------------------------------------------*/
+
+static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = {
+ .s_tuner = sony_btf_mpx_s_tuner,
+ .g_tuner = sony_btf_mpx_g_tuner,
+};
+
+static const struct v4l2_subdev_video_ops sony_btf_mpx_video_ops = {
+ .s_std = sony_btf_mpx_s_std,
+};
+
+static const struct v4l2_subdev_ops sony_btf_mpx_ops = {
+ .tuner = &sony_btf_mpx_tuner_ops,
+ .video = &sony_btf_mpx_video_ops,
+};
+
+/* --------------------------------------------------------------------------*/
+
+static int sony_btf_mpx_probe(struct i2c_client *client)
+{
+ struct sony_btf_mpx *t;
+ struct v4l2_subdev *sd;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
+ return -ENODEV;
+
+ v4l_info(client, "chip found @ 0x%x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
+ if (t == NULL)
+ return -ENOMEM;
+
+ sd = &t->sd;
+ v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops);
+
+ /* Initialize sony_btf_mpx */
+ t->mpxmode = 0;
+ t->audmode = V4L2_TUNER_MODE_STEREO;
+
+ return 0;
+}
+
+static void sony_btf_mpx_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct i2c_device_id sony_btf_mpx_id[] = {
+ { "sony-btf-mpx", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id);
+
+static struct i2c_driver sony_btf_mpx_driver = {
+ .driver = {
+ .name = "sony-btf-mpx",
+ },
+ .probe = sony_btf_mpx_probe,
+ .remove = sony_btf_mpx_remove,
+ .id_table = sony_btf_mpx_id,
+};
+module_i2c_driver(sony_btf_mpx_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 12:42:52 +0000