--- /dev/null
+/*
+ * ths7303/53- THS7303/53 Video Amplifier driver
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright 2013 Cisco Systems, Inc. and/or its affiliates.
+ *
+ * Author: Chaithrika U S <chaithrika@ti.com>
+ *
+ * Contributors:
+ * Hans Verkuil <hans.verkuil@cisco.com>
+ * Lad, Prabhakar <prabhakar.lad@ti.com>
+ * Martin Bugge <marbugge@cisco.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed .as is. WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include <media/ths7303.h>
+#include <media/v4l2-device.h>
+
+#define THS7303_CHANNEL_1 1
+#define THS7303_CHANNEL_2 2
+#define THS7303_CHANNEL_3 3
+
+struct ths7303_state {
+ struct v4l2_subdev sd;
+ const struct ths7303_platform_data *pdata;
+ struct v4l2_bt_timings bt;
+ int std_id;
+ int stream_on;
+};
+
+enum ths7303_filter_mode {
+ THS7303_FILTER_MODE_480I_576I,
+ THS7303_FILTER_MODE_480P_576P,
+ THS7303_FILTER_MODE_720P_1080I,
+ THS7303_FILTER_MODE_1080P,
+ THS7303_FILTER_MODE_DISABLE
+};
+
+MODULE_DESCRIPTION("TI THS7303 video amplifier driver");
+MODULE_AUTHOR("Chaithrika U S");
+MODULE_LICENSE("GPL");
+
+static inline struct ths7303_state *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ths7303_state, sd);
+}
+
+static int ths7303_read(struct v4l2_subdev *sd, u8 reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int ths7303_write(struct v4l2_subdev *sd, u8 reg, u8 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+ int i;
+
+ for (i = 0; i < 3; i++) {
+ ret = i2c_smbus_write_byte_data(client, reg, val);
+ if (ret == 0)
+ return 0;
+ }
+ return ret;
+}
+
+/* following function is used to set ths7303 */
+static int ths7303_setval(struct v4l2_subdev *sd,
+ enum ths7303_filter_mode mode)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ths7303_state *state = to_state(sd);
+ const struct ths7303_platform_data *pdata = state->pdata;
+ u8 val, sel = 0;
+ int err, disable = 0;
+
+ if (!client)
+ return -EINVAL;
+
+ switch (mode) {
+ case THS7303_FILTER_MODE_1080P:
+ sel = 0x3; /*1080p and SXGA/UXGA */
+ break;
+ case THS7303_FILTER_MODE_720P_1080I:
+ sel = 0x2; /*720p, 1080i and SVGA/XGA */
+ break;
+ case THS7303_FILTER_MODE_480P_576P:
+ sel = 0x1; /* EDTV 480p/576p and VGA */
+ break;
+ case THS7303_FILTER_MODE_480I_576I:
+ sel = 0x0; /* SDTV, S-Video, 480i/576i */
+ break;
+ default:
+ /* disable all channels */
+ disable = 1;
+ }
+
+ val = (sel << 6) | (sel << 3);
+ if (!disable)
+ val |= (pdata->ch_1 & 0x27);
+ err = ths7303_write(sd, THS7303_CHANNEL_1, val);
+ if (err)
+ goto out;
+
+ val = (sel << 6) | (sel << 3);
+ if (!disable)
+ val |= (pdata->ch_2 & 0x27);
+ err = ths7303_write(sd, THS7303_CHANNEL_2, val);
+ if (err)
+ goto out;
+
+ val = (sel << 6) | (sel << 3);
+ if (!disable)
+ val |= (pdata->ch_3 & 0x27);
+ err = ths7303_write(sd, THS7303_CHANNEL_3, val);
+ if (err)
+ goto out;
+
+ return 0;
+out:
+ pr_info("write byte data failed\n");
+ return err;
+}
+
+static int ths7303_s_std_output(struct v4l2_subdev *sd, v4l2_std_id norm)
+{
+ struct ths7303_state *state = to_state(sd);
+
+ if (norm & (V4L2_STD_ALL & ~V4L2_STD_SECAM)) {
+ state->std_id = 1;
+ state->bt.pixelclock = 0;
+ return ths7303_setval(sd, THS7303_FILTER_MODE_480I_576I);
+ }
+
+ return ths7303_setval(sd, THS7303_FILTER_MODE_DISABLE);
+}
+
+static int ths7303_config(struct v4l2_subdev *sd)
+{
+ struct ths7303_state *state = to_state(sd);
+ int res;
+
+ if (!state->stream_on) {
+ ths7303_write(sd, THS7303_CHANNEL_1,
+ (ths7303_read(sd, THS7303_CHANNEL_1) & 0xf8) |
+ 0x00);
+ ths7303_write(sd, THS7303_CHANNEL_2,
+ (ths7303_read(sd, THS7303_CHANNEL_2) & 0xf8) |
+ 0x00);
+ ths7303_write(sd, THS7303_CHANNEL_3,
+ (ths7303_read(sd, THS7303_CHANNEL_3) & 0xf8) |
+ 0x00);
+ return 0;
+ }
+
+ if (state->bt.pixelclock > 120000000)
+ res = ths7303_setval(sd, THS7303_FILTER_MODE_1080P);
+ else if (state->bt.pixelclock > 70000000)
+ res = ths7303_setval(sd, THS7303_FILTER_MODE_720P_1080I);
+ else if (state->bt.pixelclock > 20000000)
+ res = ths7303_setval(sd, THS7303_FILTER_MODE_480P_576P);
+ else if (state->std_id)
+ res = ths7303_setval(sd, THS7303_FILTER_MODE_480I_576I);
+ else
+ /* disable all channels */
+ res = ths7303_setval(sd, THS7303_FILTER_MODE_DISABLE);
+
+ return res;
+
+}
+
+static int ths7303_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ths7303_state *state = to_state(sd);
+
+ state->stream_on = enable;
+
+ return ths7303_config(sd);
+}
+
+/* for setting filter for HD output */
+static int ths7303_s_dv_timings(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *dv_timings)
+{
+ struct ths7303_state *state = to_state(sd);
+
+ if (!dv_timings || dv_timings->type != V4L2_DV_BT_656_1120)
+ return -EINVAL;
+
+ state->bt = dv_timings->bt;
+ state->std_id = 0;
+
+ return ths7303_config(sd);
+}
+
+static const struct v4l2_subdev_video_ops ths7303_video_ops = {
+ .s_stream = ths7303_s_stream,
+ .s_std_output = ths7303_s_std_output,
+ .s_dv_timings = ths7303_s_dv_timings,
+};
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+
+static int ths7303_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ reg->size = 1;
+ reg->val = ths7303_read(sd, reg->reg);
+ return 0;
+}
+
+static int ths7303_s_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ ths7303_write(sd, reg->reg, reg->val);
+ return 0;
+}
+#endif
+
+static const char * const stc_lpf_sel_txt[4] = {
+ "500-kHz Filter",
+ "2.5-MHz Filter",
+ "5-MHz Filter",
+ "5-MHz Filter",
+};
+
+static const char * const in_mux_sel_txt[2] = {
+ "Input A Select",
+ "Input B Select",
+};
+
+static const char * const lpf_freq_sel_txt[4] = {
+ "9-MHz LPF",
+ "16-MHz LPF",
+ "35-MHz LPF",
+ "Bypass LPF",
+};
+
+static const char * const in_bias_sel_dis_cont_txt[8] = {
+ "Disable Channel",
+ "Mute Function - No Output",
+ "DC Bias Select",
+ "DC Bias + 250 mV Offset Select",
+ "AC Bias Select",
+ "Sync Tip Clamp with low bias",
+ "Sync Tip Clamp with mid bias",
+ "Sync Tip Clamp with high bias",
+};
+
+static void ths7303_log_channel_status(struct v4l2_subdev *sd, u8 reg)
+{
+ u8 val = ths7303_read(sd, reg);
+
+ if ((val & 0x7) == 0) {
+ v4l2_info(sd, "Channel %d Off\n", reg);
+ return;
+ }
+
+ v4l2_info(sd, "Channel %d On\n", reg);
+ v4l2_info(sd, " value 0x%x\n", val);
+ v4l2_info(sd, " %s\n", stc_lpf_sel_txt[(val >> 6) & 0x3]);
+ v4l2_info(sd, " %s\n", in_mux_sel_txt[(val >> 5) & 0x1]);
+ v4l2_info(sd, " %s\n", lpf_freq_sel_txt[(val >> 3) & 0x3]);
+ v4l2_info(sd, " %s\n", in_bias_sel_dis_cont_txt[(val >> 0) & 0x7]);
+}
+
+static int ths7303_log_status(struct v4l2_subdev *sd)
+{
+ struct ths7303_state *state = to_state(sd);
+
+ v4l2_info(sd, "stream %s\n", state->stream_on ? "On" : "Off");
+
+ if (state->bt.pixelclock) {
+ struct v4l2_bt_timings *bt = bt = &state->bt;
+ u32 frame_width, frame_height;
+
+ frame_width = V4L2_DV_BT_FRAME_WIDTH(bt);
+ frame_height = V4L2_DV_BT_FRAME_HEIGHT(bt);
+ v4l2_info(sd,
+ "timings: %dx%d%s%d (%dx%d). Pix freq. = %d Hz. Polarities = 0x%x\n",
+ bt->width, bt->height, bt->interlaced ? "i" : "p",
+ (frame_height * frame_width) > 0 ?
+ (int)bt->pixelclock /
+ (frame_height * frame_width) : 0,
+ frame_width, frame_height,
+ (int)bt->pixelclock, bt->polarities);
+ } else {
+ v4l2_info(sd, "no timings set\n");
+ }
+
+ ths7303_log_channel_status(sd, THS7303_CHANNEL_1);
+ ths7303_log_channel_status(sd, THS7303_CHANNEL_2);
+ ths7303_log_channel_status(sd, THS7303_CHANNEL_3);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops ths7303_core_ops = {
+ .log_status = ths7303_log_status,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = ths7303_g_register,
+ .s_register = ths7303_s_register,
+#endif
+};
+
+static const struct v4l2_subdev_ops ths7303_ops = {
+ .core = &ths7303_core_ops,
+ .video = &ths7303_video_ops,
+};
+
+static int ths7303_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ths7303_platform_data *pdata = client->dev.platform_data;
+ struct ths7303_state *state;
+ struct v4l2_subdev *sd;
+
+ if (pdata == NULL) {
+ dev_err(&client->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ v4l_info(client, "chip found @ 0x%x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ state = devm_kzalloc(&client->dev, sizeof(struct ths7303_state),
+ GFP_KERNEL);
+ if (!state)
+ return -ENOMEM;
+
+ state->pdata = pdata;
+ sd = &state->sd;
+ v4l2_i2c_subdev_init(sd, client, &ths7303_ops);
+
+ /* set to default 480I_576I filter mode */
+ if (ths7303_setval(sd, THS7303_FILTER_MODE_480I_576I) < 0) {
+ v4l_err(client, "Setting to 480I_576I filter mode failed!\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ths7303_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+
+ return 0;
+}
+
+static const struct i2c_device_id ths7303_id[] = {
+ {"ths7303", 0},
+ {"ths7353", 0},
+ {},
+};
+
+MODULE_DEVICE_TABLE(i2c, ths7303_id);
+
+static struct i2c_driver ths7303_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ths73x3",
+ },
+ .probe = ths7303_probe,
+ .remove = ths7303_remove,
+ .id_table = ths7303_id,
+};
+
+module_i2c_driver(ths7303_driver);
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