/*
- * ths7303- THS7303 Video Amplifier driver
+ * 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
* GNU General Public License for more details.
*/
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/ctype.h>
-#include <linux/slab.h>
#include <linux/i2c.h>
-#include <linux/device.h>
-#include <linux/delay.h>
#include <linux/module.h>
-#include <linux/uaccess.h>
-#include <linux/videodev2.h>
+#include <linux/slab.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-subdev.h>
+#include <media/ths7303.h>
#include <media/v4l2-chip-ident.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;
+ struct ths7303_platform_data pdata;
+ struct v4l2_bt_timings bt;
+ int std_id;
+ int stream_on;
+ int driver_data;
+};
+
enum ths7303_filter_mode {
THS7303_FILTER_MODE_480I_576I,
THS7303_FILTER_MODE_480P_576P,
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-1");
+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 */
int ths7303_setval(struct v4l2_subdev *sd, enum ths7303_filter_mode mode)
{
- u8 input_bias_chroma = 3;
- u8 input_bias_luma = 3;
- int disable = 0;
- int err = 0;
- u8 val = 0;
- u8 temp;
-
struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ths7303_state *state = to_state(sd);
+ 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:
- val = (3 << 6);
- val |= (3 << 3);
+ sel = 0x3; /*1080p and SXGA/UXGA */
break;
case THS7303_FILTER_MODE_720P_1080I:
- val = (2 << 6);
- val |= (2 << 3);
+ sel = 0x2; /*720p, 1080i and SVGA/XGA */
break;
case THS7303_FILTER_MODE_480P_576P:
- val = (1 << 6);
- val |= (1 << 3);
+ sel = 0x1; /* EDTV 480p/576p and VGA */
break;
case THS7303_FILTER_MODE_480I_576I:
+ sel = 0x0; /* SDTV, S-Video, 480i/576i */
break;
- case THS7303_FILTER_MODE_DISABLE:
- pr_info("mode disabled\n");
- /* disable all channels */
- disable = 1;
default:
/* disable all channels */
disable = 1;
}
- /* Setup channel 2 - Luma - Green */
- temp = val;
+
+ val = (sel << 6) | (sel << 3);
if (!disable)
- val |= input_bias_luma;
- err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_2, val);
+ val |= (pdata->ch_1 & 0x27);
+ err = ths7303_write(sd, THS7303_CHANNEL_1, val);
if (err)
goto out;
- /* setup two chroma channels */
+ val = (sel << 6) | (sel << 3);
if (!disable)
- temp |= input_bias_chroma;
-
- err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_1, temp);
+ val |= (pdata->ch_2 & 0x27);
+ err = ths7303_write(sd, THS7303_CHANNEL_2, val);
if (err)
goto out;
- err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_3, temp);
+ 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 err;
+
+ 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)
{
- if (norm & (V4L2_STD_ALL & ~V4L2_STD_SECAM))
+ 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);
- else
- return ths7303_setval(sd, THS7303_FILTER_MODE_DISABLE);
+ }
+
+ return ths7303_setval(sd, THS7303_FILTER_MODE_DISABLE);
}
-/* for setting filter for HD output */
-static int ths7303_s_dv_timings(struct v4l2_subdev *sd,
- struct v4l2_dv_timings *dv_timings)
+static int ths7303_config(struct v4l2_subdev *sd)
{
- u32 height = dv_timings->bt.height;
- int interlaced = dv_timings->bt.interlaced;
- int res = 0;
+ 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 (height == 1080 && !interlaced)
+ if (state->bt.pixelclock > 120000000)
res = ths7303_setval(sd, THS7303_FILTER_MODE_1080P);
- else if ((height == 720 && !interlaced) ||
- (height == 1080 && interlaced))
+ else if (state->bt.pixelclock > 70000000)
res = ths7303_setval(sd, THS7303_FILTER_MODE_720P_1080I);
- else if ((height == 480 || height == 576) && !interlaced)
+ 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 int ths7303_g_chip_ident(struct v4l2_subdev *sd,
struct v4l2_dbg_chip_ident *chip)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ths7303_state *state = to_state(sd);
- return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_THS7303, 0);
+ return v4l2_chip_ident_i2c_client(client, chip, state->driver_data, 0);
}
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,
+ .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)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (!v4l2_chip_match_i2c_client(client, ®->match))
+ return -EINVAL;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ reg->size = 1;
+ reg->val = ths7303_read(sd, reg->reg);
+ return 0;
+}
+
+static int ths7303_s_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (!v4l2_chip_match_i2c_client(client, ®->match))
+ return -EINVAL;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ 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 = bt->width + bt->hfrontporch +
+ bt->hsync + bt->hbackporch;
+ frame_height = bt->height + bt->vfrontporch +
+ bt->vsync + bt->vbackporch;
+ 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 = {
.g_chip_ident = ths7303_g_chip_ident,
+ .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 = {
.video = &ths7303_video_ops,
};
+static int ths7303_setup(struct v4l2_subdev *sd)
+{
+ struct ths7303_state *state = to_state(sd);
+ struct ths7303_platform_data *pdata = &state->pdata;
+ int ret;
+ u8 mask;
+
+ state->stream_on = pdata->init_enable;
+
+ mask = state->stream_on ? 0xff : 0xf8;
+
+ ret = ths7303_write(sd, THS7303_CHANNEL_1, pdata->ch_1 & mask);
+ if (ret)
+ return ret;
+
+ ret = ths7303_write(sd, THS7303_CHANNEL_2, pdata->ch_2 & mask);
+ if (ret)
+ return ret;
+
+ ret = ths7303_write(sd, THS7303_CHANNEL_3, pdata->ch_3 & mask);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
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;
- v4l2_std_id std_id = V4L2_STD_NTSC;
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);
- sd = devm_kzalloc(&client->dev, sizeof(struct v4l2_subdev), GFP_KERNEL);
- if (sd == NULL)
+ state = devm_kzalloc(&client->dev, sizeof(struct ths7303_state),
+ GFP_KERNEL);
+ if (!state)
return -ENOMEM;
+ if (!pdata)
+ v4l_warn(client, "No platform data, using default data!\n");
+ else
+ state->pdata = *pdata;
+
+ sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &ths7303_ops);
- return ths7303_s_std_output(sd, std_id);
+ /* store the driver data to differntiate the chip */
+ state->driver_data = (int)id->driver_data;
+
+ if (ths7303_setup(sd) < 0) {
+ v4l_err(client, "init failed\n");
+ return -EIO;
+ }
+
+ return 0;
}
static int ths7303_remove(struct i2c_client *client)
}
static const struct i2c_device_id ths7303_id[] = {
- {"ths7303", 0},
+ {"ths7303", V4L2_IDENT_THS7303},
+ {"ths7353", V4L2_IDENT_THS7353},
{},
};
static struct i2c_driver ths7303_driver = {
.driver = {
.owner = THIS_MODULE,
- .name = "ths7303",
+ .name = "ths73x3",
},
.probe = ths7303_probe,
.remove = ths7303_remove,
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