/*
* Driver for Analog Devices ADV748X 8 channel analog front end (AFE) receiver
* with standard definition processor (SDP)
*
* Copyright (C) 2017 Renesas Electronics Corp.
*
* 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; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/v4l2-dv-timings.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dv-timings.h>
#include <media/v4l2-ioctl.h>
#include "adv748x.h"
/* -----------------------------------------------------------------------------
* SDP
*/
#define ADV748X_AFE_STD_AD_PAL_BG_NTSC_J_SECAM 0x0
#define ADV748X_AFE_STD_AD_PAL_BG_NTSC_J_SECAM_PED 0x1
#define ADV748X_AFE_STD_AD_PAL_N_NTSC_J_SECAM 0x2
#define ADV748X_AFE_STD_AD_PAL_N_NTSC_M_SECAM 0x3
#define ADV748X_AFE_STD_NTSC_J 0x4
#define ADV748X_AFE_STD_NTSC_M 0x5
#define ADV748X_AFE_STD_PAL60 0x6
#define ADV748X_AFE_STD_NTSC_443 0x7
#define ADV748X_AFE_STD_PAL_BG 0x8
#define ADV748X_AFE_STD_PAL_N 0x9
#define ADV748X_AFE_STD_PAL_M 0xa
#define ADV748X_AFE_STD_PAL_M_PED 0xb
#define ADV748X_AFE_STD_PAL_COMB_N 0xc
#define ADV748X_AFE_STD_PAL_COMB_N_PED 0xd
#define ADV748X_AFE_STD_PAL_SECAM 0xe
#define ADV748X_AFE_STD_PAL_SECAM_PED 0xf
static int adv748x_afe_read_ro_map(struct adv748x_state *state, u8 reg)
{
int ret;
/* Select SDP Read-Only Main Map */
ret = sdp_write(state, ADV748X_SDP_MAP_SEL,
ADV748X_SDP_MAP_SEL_RO_MAIN);
if (ret < 0)
return ret;
return sdp_read(state, reg);
}
static int adv748x_afe_status(struct adv748x_afe *afe, u32 *signal,
v4l2_std_id *std)
{
struct adv748x_state *state = adv748x_afe_to_state(afe);
int info;
/* Read status from reg 0x10 of SDP RO Map */
info = adv748x_afe_read_ro_map(state, ADV748X_SDP_RO_10);
if (info < 0)
return info;
if (signal)
*signal = info & ADV748X_SDP_RO_10_IN_LOCK ?
0 : V4L2_IN_ST_NO_SIGNAL;
if (!std)
return 0;
/* Standard not valid if there is no signal */
if (!(info & ADV748X_SDP_RO_10_IN_LOCK)) {
*std = V4L2_STD_UNKNOWN;
return 0;
}
switch (info & 0x70) {
case 0x00:
*std = V4L2_STD_NTSC;
break;
case 0x10:
*std = V4L2_STD_NTSC_443;
break;
case 0x20:
*std = V4L2_STD_PAL_M;
break;
case 0x30:
*std = V4L2_STD_PAL_60;
break;
case 0x40:
*std = V4L2_STD_PAL;
break;
case 0x50:
*std = V4L2_STD_SECAM;
break;
case 0x60:
*std = V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
break;
case 0x70:
*std = V4L2_STD_SECAM;
break;
default:
*std = V4L2_STD_UNKNOWN;
break;
}
return 0;
}
static void adv748x_afe_fill_format(struct adv748x_afe *afe,
struct v4l2_mbus_framefmt *fmt)
{
memset(fmt, 0, sizeof(*fmt));
fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
fmt->field = V4L2_FIELD_ALTERNATE;
fmt->width = 720;
fmt->height = afe->curr_norm & V4L2_STD_525_60 ? 480 : 576;
/* Field height */
fmt->height /= 2;
}
static int adv748x_afe_std(v4l2_std_id std)
{
if (std == V4L2_STD_PAL_60)
return ADV748X_AFE_STD_PAL60;
if (std == V4L2_STD_NTSC_443)
return ADV748X_AFE_STD_NTSC_443;
if (std == V4L2_STD_PAL_N)
return ADV748X_AFE_STD_PAL_N;
if (std == V4L2_STD_PAL_M)
return ADV748X_AFE_STD_PAL_M;
if (std == V4L2_STD_PAL_Nc)
return ADV748X_AFE_STD_PAL_COMB_N;
if (std & V4L2_STD_NTSC)
return ADV748X_AFE_STD_NTSC_M;
if (std & V4L2_STD_PAL)
return ADV748X_AFE_STD_PAL_BG;
if (std & V4L2_STD_SECAM)
return ADV748X_AFE_STD_PAL_SECAM;
return -EINVAL;
}
static void adv748x_afe_set_video_standard(struct adv748x_state *state,
int sdpstd)
{
sdp_clrset(state, ADV748X_SDP_VID_SEL, ADV748X_SDP_VID_SEL_MASK,
(sdpstd & 0xf) << ADV748X_SDP_VID_SEL_SHIFT);
}
static int adv748x_afe_s_input(struct adv748x_afe *afe, unsigned int input)
{
struct adv748x_state *state = adv748x_afe_to_state(afe);
return sdp_write(state, ADV748X_SDP_INSEL, input);
}
static int adv748x_afe_g_pixelaspect(struct v4l2_subdev *sd,
struct v4l2_fract *aspect)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
if (afe->curr_norm & V4L2_STD_525_60) {
aspect->numerator = 11;
aspect->denominator = 10;
} else {
aspect->numerator = 54;
aspect->denominator = 59;
}
return 0;
}
/* -----------------------------------------------------------------------------
* v4l2_subdev_video_ops
*/
static int adv748x_afe_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
*norm = afe->curr_norm;
return 0;
}
static int adv748x_afe_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
struct adv748x_state *state = adv748x_afe_to_state(afe);
int afe_std = adv748x_afe_std(std);
if (afe_std < 0)
return afe_std;
mutex_lock(&state->mutex);
adv748x_afe_set_video_standard(state, afe_std);
afe->curr_norm = std;
mutex_unlock(&state->mutex);
return 0;
}
static int adv748x_afe_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
struct adv748x_state *state = adv748x_afe_to_state(afe);
int afe_std;
int ret;
mutex_lock(&state->mutex);
if (afe->streaming) {
ret = -EBUSY;
goto unlock;
}
/* Set auto detect mode */
adv748x_afe_set_video_standard(state,
ADV748X_AFE_STD_AD_PAL_BG_NTSC_J_SECAM);
msleep(100);
/* Read detected standard */
ret = adv748x_afe_status(afe, NULL, std);
afe_std = adv748x_afe_std(afe->curr_norm);
if (afe_std < 0)
goto unlock;
/* Restore original state */
adv748x_afe_set_video_standard(state, afe_std);
unlock:
mutex_unlock(&state->mutex);
return ret;
}
static int adv748x_afe_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm)
{
*norm = V4L2_STD_ALL;
return 0;
}
static int adv748x_afe_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
struct adv748x_state *state = adv748x_afe_to_state(afe);
int ret;
mutex_lock(&state->mutex);
ret = adv748x_afe_status(afe, status, NULL);
mutex_unlock(&state->mutex);
return ret;
}
static int adv748x_afe_s_stream(struct v4l2_subdev *sd, int enable)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
struct adv748x_state *state = adv748x_afe_to_state(afe);
int ret, signal = V4L2_IN_ST_NO_SIGNAL;
mutex_lock(&state->mutex);
if (enable) {
ret = adv748x_afe_s_input(afe, afe->input);
if (ret)
goto unlock;
}
ret = adv748x_txb_power(state, enable);
if (ret)
goto unlock;
afe->streaming = enable;
adv748x_afe_status(afe, &signal, NULL);
if (signal != V4L2_IN_ST_NO_SIGNAL)
adv_dbg(state, "Detected SDP signal\n");
else
adv_dbg(state, "Couldn't detect SDP video signal\n");
unlock:
mutex_unlock(&state->mutex);
return ret;
}
static const struct v4l2_subdev_video_ops adv748x_afe_video_ops = {
.g_std = adv748x_afe_g_std,
.s_std = adv748x_afe_s_std,
.querystd = adv748x_afe_querystd,
.g_tvnorms = adv748x_afe_g_tvnorms,
.g_input_status = adv748x_afe_g_input_status,
.s_stream = adv748x_afe_s_stream,
.g_pixelaspect = adv748x_afe_g_pixelaspect,
};
/* -----------------------------------------------------------------------------
* v4l2_subdev_pad_ops
*/
static int adv748x_afe_propagate_pixelrate(struct adv748x_afe *afe)
{
struct v4l2_subdev *tx;
unsigned int width, height, fps;
tx = adv748x_get_remote_sd(&afe->pads[ADV748X_AFE_SOURCE]);
if (!tx)
return -ENOLINK;
width = 720;
height = afe->curr_norm & V4L2_STD_525_60 ? 480 : 576;
fps = afe->curr_norm & V4L2_STD_525_60 ? 30 : 25;
return adv748x_csi2_set_pixelrate(tx, width * height * fps);
}
static int adv748x_afe_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index != 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_UYVY8_2X8;
return 0;
}
static int adv748x_afe_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *sdformat)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
struct v4l2_mbus_framefmt *mbusformat;
/* It makes no sense to get the format of the analog sink pads */
if (sdformat->pad != ADV748X_AFE_SOURCE)
return -EINVAL;
if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
sdformat->format = *mbusformat;
} else {
adv748x_afe_fill_format(afe, &sdformat->format);
adv748x_afe_propagate_pixelrate(afe);
}
return 0;
}
static int adv748x_afe_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *sdformat)
{
struct v4l2_mbus_framefmt *mbusformat;
/* It makes no sense to get the format of the analog sink pads */
if (sdformat->pad != ADV748X_AFE_SOURCE)
return -EINVAL;
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
return adv748x_afe_get_format(sd, cfg, sdformat);
mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
*mbusformat = sdformat->format;
return 0;
}
static const struct v4l2_subdev_pad_ops adv748x_afe_pad_ops = {
.enum_mbus_code = adv748x_afe_enum_mbus_code,
.set_fmt = adv748x_afe_set_format,
.get_fmt = adv748x_afe_get_format,
};
/* -----------------------------------------------------------------------------
* v4l2_subdev_ops
*/
static const struct v4l2_subdev_ops adv748x_afe_ops = {
.video = &adv748x_afe_video_ops,
.pad = &adv748x_afe_pad_ops,
};
/* -----------------------------------------------------------------------------
* Controls
*/
static const char * const afe_ctrl_frp_menu[] = {
"Disabled",
"Solid Blue",
"Color Bars",
"Grey Ramp",
"Cb Ramp",
"Cr Ramp",
"Boundary"
};
static int adv748x_afe_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct adv748x_afe *afe = adv748x_ctrl_to_afe(ctrl);
struct adv748x_state *state = adv748x_afe_to_state(afe);
bool enable;
int ret;
ret = sdp_write(state, 0x0e, 0x00);
if (ret < 0)
return ret;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ret = sdp_write(state, ADV748X_SDP_BRI, ctrl->val);
break;
case V4L2_CID_HUE:
/* Hue is inverted according to HSL chart */
ret = sdp_write(state, ADV748X_SDP_HUE, -ctrl->val);
break;
case V4L2_CID_CONTRAST:
ret = sdp_write(state, ADV748X_SDP_CON, ctrl->val);
break;
case V4L2_CID_SATURATION:
ret = sdp_write(state, ADV748X_SDP_SD_SAT_U, ctrl->val);
if (ret)
break;
ret = sdp_write(state, ADV748X_SDP_SD_SAT_V, ctrl->val);
break;
case V4L2_CID_TEST_PATTERN:
enable = !!ctrl->val;
/* Enable/Disable Color bar test patterns */
ret = sdp_clrset(state, ADV748X_SDP_DEF, ADV748X_SDP_DEF_VAL_EN,
enable);
if (ret)
break;
ret = sdp_clrset(state, ADV748X_SDP_FRP, ADV748X_SDP_FRP_MASK,
enable ? ctrl->val - 1 : 0);
break;
default:
return -EINVAL;
}
return ret;
}
static const struct v4l2_ctrl_ops adv748x_afe_ctrl_ops = {
.s_ctrl = adv748x_afe_s_ctrl,
};
static int adv748x_afe_init_controls(struct adv748x_afe *afe)
{
struct adv748x_state *state = adv748x_afe_to_state(afe);
v4l2_ctrl_handler_init(&afe->ctrl_hdl, 5);
/* Use our mutex for the controls */
afe->ctrl_hdl.lock = &state->mutex;
v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
V4L2_CID_BRIGHTNESS, ADV748X_SDP_BRI_MIN,
ADV748X_SDP_BRI_MAX, 1, ADV748X_SDP_BRI_DEF);
v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
V4L2_CID_CONTRAST, ADV748X_SDP_CON_MIN,
ADV748X_SDP_CON_MAX, 1, ADV748X_SDP_CON_DEF);
v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
V4L2_CID_SATURATION, ADV748X_SDP_SAT_MIN,
ADV748X_SDP_SAT_MAX, 1, ADV748X_SDP_SAT_DEF);
v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
V4L2_CID_HUE, ADV748X_SDP_HUE_MIN,
ADV748X_SDP_HUE_MAX, 1, ADV748X_SDP_HUE_DEF);
v4l2_ctrl_new_std_menu_items(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(afe_ctrl_frp_menu) - 1,
0, 0, afe_ctrl_frp_menu);
afe->sd.ctrl_handler = &afe->ctrl_hdl;
if (afe->ctrl_hdl.error) {
v4l2_ctrl_handler_free(&afe->ctrl_hdl);
return afe->ctrl_hdl.error;
}
return v4l2_ctrl_handler_setup(&afe->ctrl_hdl);
}
int adv748x_afe_init(struct adv748x_afe *afe)
{
struct adv748x_state *state = adv748x_afe_to_state(afe);
int ret;
unsigned int i;
afe->input = 0;
afe->streaming = false;
afe->curr_norm = V4L2_STD_NTSC_M;
adv748x_subdev_init(&afe->sd, state, &adv748x_afe_ops,
MEDIA_ENT_F_ATV_DECODER, "afe");
/* Identify the first connector found as a default input if set */
for (i = ADV748X_PORT_AIN0; i <= ADV748X_PORT_AIN7; i++) {
/* Inputs and ports are 1-indexed to match the data sheet */
if (state->endpoints[i]) {
afe->input = i;
break;
}
}
adv748x_afe_s_input(afe, afe->input);
adv_dbg(state, "AFE Default input set to %d\n", afe->input);
/* Entity pads and sinks are 0-indexed to match the pads */
for (i = ADV748X_AFE_SINK_AIN0; i <= ADV748X_AFE_SINK_AIN7; i++)
afe->pads[i].flags = MEDIA_PAD_FL_SINK;
afe->pads[ADV748X_AFE_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&afe->sd.entity, ADV748X_AFE_NR_PADS,
afe->pads);
if (ret)
return ret;
ret = adv748x_afe_init_controls(afe);
if (ret)
goto error;
return 0;
error:
media_entity_cleanup(&afe->sd.entity);
return ret;
}
void adv748x_afe_cleanup(struct adv748x_afe *afe)
{
v4l2_device_unregister_subdev(&afe->sd);
media_entity_cleanup(&afe->sd.entity);
v4l2_ctrl_handler_free(&afe->ctrl_hdl);
}