/*
* Samsung LSI S5C73M3 8M pixel camera driver
*
* Copyright (C) 2012, Samsung Electronics, Co., Ltd.
* Sylwester Nawrocki <s.nawrocki@samsung.com>
* Andrzej Hajda <a.hajda@samsung.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/sizes.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/media.h>
#include <linux/module.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/videodev2.h>
#include <media/media-entity.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-mediabus.h>
#include <media/i2c/s5c73m3.h>
#include "s5c73m3.h"
static int s5c73m3_get_af_status(struct s5c73m3 *state, struct v4l2_ctrl *ctrl)
{
u16 reg = REG_AF_STATUS_UNFOCUSED;
int ret = s5c73m3_read(state, REG_AF_STATUS, ®);
switch (reg) {
case REG_CAF_STATUS_FIND_SEARCH_DIR:
case REG_AF_STATUS_FOCUSING:
case REG_CAF_STATUS_FOCUSING:
ctrl->val = V4L2_AUTO_FOCUS_STATUS_BUSY;
break;
case REG_CAF_STATUS_FOCUSED:
case REG_AF_STATUS_FOCUSED:
ctrl->val = V4L2_AUTO_FOCUS_STATUS_REACHED;
break;
default:
v4l2_info(&state->sensor_sd, "Unknown AF status %#x\n", reg);
/* Fall through */
case REG_CAF_STATUS_UNFOCUSED:
case REG_AF_STATUS_UNFOCUSED:
case REG_AF_STATUS_INVALID:
ctrl->val = V4L2_AUTO_FOCUS_STATUS_FAILED;
break;
}
return ret;
}
static int s5c73m3_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = ctrl_to_sensor_sd(ctrl);
struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
int ret;
if (state->power == 0)
return -EBUSY;
switch (ctrl->id) {
case V4L2_CID_FOCUS_AUTO:
ret = s5c73m3_get_af_status(state, state->ctrls.af_status);
if (ret)
return ret;
break;
}
return 0;
}
static int s5c73m3_set_colorfx(struct s5c73m3 *state, int val)
{
static const unsigned short colorfx[][2] = {
{ V4L2_COLORFX_NONE, COMM_IMAGE_EFFECT_NONE },
{ V4L2_COLORFX_BW, COMM_IMAGE_EFFECT_MONO },
{ V4L2_COLORFX_SEPIA, COMM_IMAGE_EFFECT_SEPIA },
{ V4L2_COLORFX_NEGATIVE, COMM_IMAGE_EFFECT_NEGATIVE },
{ V4L2_COLORFX_AQUA, COMM_IMAGE_EFFECT_AQUA },
};
int i;
for (i = 0; i < ARRAY_SIZE(colorfx); i++) {
if (colorfx[i][0] != val)
continue;
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
"Setting %s color effect\n",
v4l2_ctrl_get_menu(state->ctrls.colorfx->id)[i]);
return s5c73m3_isp_command(state, COMM_IMAGE_EFFECT,
colorfx[i][1]);
}
return -EINVAL;
}
/* Set exposure metering/exposure bias */
static int s5c73m3_set_exposure(struct s5c73m3 *state, int auto_exp)
{
struct v4l2_subdev *sd = &state->sensor_sd;
struct s5c73m3_ctrls *ctrls = &state->ctrls;
int ret = 0;
if (ctrls->exposure_metering->is_new) {
u16 metering;
switch (ctrls->exposure_metering->val) {
case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED:
metering = COMM_METERING_CENTER;
break;
case V4L2_EXPOSURE_METERING_SPOT:
metering = COMM_METERING_SPOT;
break;
default:
metering = COMM_METERING_AVERAGE;
break;
}
ret = s5c73m3_isp_command(state, COMM_METERING, metering);
}
if (!ret && ctrls->exposure_bias->is_new) {
u16 exp_bias = ctrls->exposure_bias->val;
ret = s5c73m3_isp_command(state, COMM_EV, exp_bias);
}
v4l2_dbg(1, s5c73m3_dbg, sd,
"%s: exposure bias: %#x, metering: %#x (%d)\n", __func__,
ctrls->exposure_bias->val, ctrls->exposure_metering->val, ret);
return ret;
}
static int s5c73m3_set_white_balance(struct s5c73m3 *state, int val)
{
static const unsigned short wb[][2] = {
{ V4L2_WHITE_BALANCE_INCANDESCENT, COMM_AWB_MODE_INCANDESCENT},
{ V4L2_WHITE_BALANCE_FLUORESCENT, COMM_AWB_MODE_FLUORESCENT1},
{ V4L2_WHITE_BALANCE_FLUORESCENT_H, COMM_AWB_MODE_FLUORESCENT2},
{ V4L2_WHITE_BALANCE_CLOUDY, COMM_AWB_MODE_CLOUDY},
{ V4L2_WHITE_BALANCE_DAYLIGHT, COMM_AWB_MODE_DAYLIGHT},
{ V4L2_WHITE_BALANCE_AUTO, COMM_AWB_MODE_AUTO},
};
int i;
for (i = 0; i < ARRAY_SIZE(wb); i++) {
if (wb[i][0] != val)
continue;
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
"Setting white balance to: %s\n",
v4l2_ctrl_get_menu(state->ctrls.auto_wb->id)[i]);
return s5c73m3_isp_command(state, COMM_AWB_MODE, wb[i][1]);
}
return -EINVAL;
}
static int s5c73m3_af_run(struct s5c73m3 *state, bool on)
{
struct s5c73m3_ctrls *c = &state->ctrls;
if (!on)
return s5c73m3_isp_command(state, COMM_AF_CON,
COMM_AF_CON_STOP);
if (c->focus_auto->val)
return s5c73m3_isp_command(state, COMM_AF_MODE,
COMM_AF_MODE_PREVIEW_CAF_START);
return s5c73m3_isp_command(state, COMM_AF_CON, COMM_AF_CON_START);
}
static int s5c73m3_3a_lock(struct s5c73m3 *state, struct v4l2_ctrl *ctrl)
{
bool awb_lock = ctrl->val & V4L2_LOCK_WHITE_BALANCE;
bool ae_lock = ctrl->val & V4L2_LOCK_EXPOSURE;
bool af_lock = ctrl->val & V4L2_LOCK_FOCUS;
int ret = 0;
if ((ctrl->val ^ ctrl->cur.val) & V4L2_LOCK_EXPOSURE) {
ret = s5c73m3_isp_command(state, COMM_AE_CON,
ae_lock ? COMM_AE_STOP : COMM_AE_START);
if (ret)
return ret;
}
if (((ctrl->val ^ ctrl->cur.val) & V4L2_LOCK_WHITE_BALANCE)
&& state->ctrls.auto_wb->val) {
ret = s5c73m3_isp_command(state, COMM_AWB_CON,
awb_lock ? COMM_AWB_STOP : COMM_AWB_START);
if (ret)
return ret;
}
if ((ctrl->val ^ ctrl->cur.val) & V4L2_LOCK_FOCUS)
ret = s5c73m3_af_run(state, ~af_lock);
return ret;
}
static int s5c73m3_set_auto_focus(struct s5c73m3 *state, int caf)
{
struct s5c73m3_ctrls *c = &state->ctrls;
int ret = 1;
if (c->af_distance->is_new) {
u16 mode = (c->af_distance->val == V4L2_AUTO_FOCUS_RANGE_MACRO)
? COMM_AF_MODE_MACRO : COMM_AF_MODE_NORMAL;
ret = s5c73m3_isp_command(state, COMM_AF_MODE, mode);
if (ret != 0)
return ret;
}
if (!ret || (c->focus_auto->is_new && c->focus_auto->val) ||
c->af_start->is_new)
ret = s5c73m3_af_run(state, 1);
else if ((c->focus_auto->is_new && !c->focus_auto->val) ||
c->af_stop->is_new)
ret = s5c73m3_af_run(state, 0);
else
ret = 0;
return ret;
}
static int s5c73m3_set_contrast(struct s5c73m3 *state, int val)
{
u16 reg = (val < 0) ? -val + 2 : val;
return s5c73m3_isp_command(state, COMM_CONTRAST, reg);
}
static int s5c73m3_set_saturation(struct s5c73m3 *state, int val)
{
u16 reg = (val < 0) ? -val + 2 : val;
return s5c73m3_isp_command(state, COMM_SATURATION, reg);
}
static int s5c73m3_set_sharpness(struct s5c73m3 *state, int val)
{
u16 reg = (val < 0) ? -val + 2 : val;
return s5c73m3_isp_command(state, COMM_SHARPNESS, reg);
}
static int s5c73m3_set_iso(struct s5c73m3 *state, int val)
{
u32 iso;
if (val == V4L2_ISO_SENSITIVITY_MANUAL)
iso = state->ctrls.iso->val + 1;
else
iso = 0;
return s5c73m3_isp_command(state, COMM_ISO, iso);
}
static int s5c73m3_set_stabilization(struct s5c73m3 *state, int val)
{
struct v4l2_subdev *sd = &state->sensor_sd;
v4l2_dbg(1, s5c73m3_dbg, sd, "Image stabilization: %d\n", val);
return s5c73m3_isp_command(state, COMM_FRAME_RATE, val ?
COMM_FRAME_RATE_ANTI_SHAKE : COMM_FRAME_RATE_AUTO_SET);
}
static int s5c73m3_set_jpeg_quality(struct s5c73m3 *state, int quality)
{
int reg;
if (quality <= 65)
reg = COMM_IMAGE_QUALITY_NORMAL;
else if (quality <= 75)
reg = COMM_IMAGE_QUALITY_FINE;
else
reg = COMM_IMAGE_QUALITY_SUPERFINE;
return s5c73m3_isp_command(state, COMM_IMAGE_QUALITY, reg);
}
static int s5c73m3_set_scene_program(struct s5c73m3 *state, int val)
{
static const unsigned short scene_lookup[] = {
COMM_SCENE_MODE_NONE, /* V4L2_SCENE_MODE_NONE */
COMM_SCENE_MODE_AGAINST_LIGHT,/* V4L2_SCENE_MODE_BACKLIGHT */
COMM_SCENE_MODE_BEACH, /* V4L2_SCENE_MODE_BEACH_SNOW */
COMM_SCENE_MODE_CANDLE, /* V4L2_SCENE_MODE_CANDLE_LIGHT */
COMM_SCENE_MODE_DAWN, /* V4L2_SCENE_MODE_DAWN_DUSK */
COMM_SCENE_MODE_FALL, /* V4L2_SCENE_MODE_FALL_COLORS */
COMM_SCENE_MODE_FIRE, /* V4L2_SCENE_MODE_FIREWORKS */
COMM_SCENE_MODE_LANDSCAPE, /* V4L2_SCENE_MODE_LANDSCAPE */
COMM_SCENE_MODE_NIGHT, /* V4L2_SCENE_MODE_NIGHT */
COMM_SCENE_MODE_INDOOR, /* V4L2_SCENE_MODE_PARTY_INDOOR */
COMM_SCENE_MODE_PORTRAIT, /* V4L2_SCENE_MODE_PORTRAIT */
COMM_SCENE_MODE_SPORTS, /* V4L2_SCENE_MODE_SPORTS */
COMM_SCENE_MODE_SUNSET, /* V4L2_SCENE_MODE_SUNSET */
COMM_SCENE_MODE_TEXT, /* V4L2_SCENE_MODE_TEXT */
};
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, "Setting %s scene mode\n",
v4l2_ctrl_get_menu(state->ctrls.scene_mode->id)[val]);
return s5c73m3_isp_command(state, COMM_SCENE_MODE, scene_lookup[val]);
}
static int s5c73m3_set_power_line_freq(struct s5c73m3 *state, int val)
{
unsigned int pwr_line_freq = COMM_FLICKER_NONE;
switch (val) {
case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:
pwr_line_freq = COMM_FLICKER_NONE;
break;
case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
pwr_line_freq = COMM_FLICKER_AUTO_50HZ;
break;
case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
pwr_line_freq = COMM_FLICKER_AUTO_60HZ;
break;
default:
case V4L2_CID_POWER_LINE_FREQUENCY_AUTO:
pwr_line_freq = COMM_FLICKER_NONE;
}
return s5c73m3_isp_command(state, COMM_FLICKER_MODE, pwr_line_freq);
}
static int s5c73m3_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = ctrl_to_sensor_sd(ctrl);
struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
int ret = 0;
v4l2_dbg(1, s5c73m3_dbg, sd, "set_ctrl: %s, value: %d\n",
ctrl->name, ctrl->val);
mutex_lock(&state->lock);
/*
* If the device is not powered up by the host driver do
* not apply any controls to H/W at this time. Instead
* the controls will be restored right after power-up.
*/
if (state->power == 0)
goto unlock;
if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) {
ret = -EINVAL;
goto unlock;
}
switch (ctrl->id) {
case V4L2_CID_3A_LOCK:
ret = s5c73m3_3a_lock(state, ctrl);
break;
case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
ret = s5c73m3_set_white_balance(state, ctrl->val);
break;
case V4L2_CID_CONTRAST:
ret = s5c73m3_set_contrast(state, ctrl->val);
break;
case V4L2_CID_COLORFX:
ret = s5c73m3_set_colorfx(state, ctrl->val);
break;
case V4L2_CID_EXPOSURE_AUTO:
ret = s5c73m3_set_exposure(state, ctrl->val);
break;
case V4L2_CID_FOCUS_AUTO:
ret = s5c73m3_set_auto_focus(state, ctrl->val);
break;
case V4L2_CID_IMAGE_STABILIZATION:
ret = s5c73m3_set_stabilization(state, ctrl->val);
break;
case V4L2_CID_ISO_SENSITIVITY:
ret = s5c73m3_set_iso(state, ctrl->val);
break;
case V4L2_CID_JPEG_COMPRESSION_QUALITY:
ret = s5c73m3_set_jpeg_quality(state, ctrl->val);
break;
case V4L2_CID_POWER_LINE_FREQUENCY:
ret = s5c73m3_set_power_line_freq(state, ctrl->val);
break;
case V4L2_CID_SATURATION:
ret = s5c73m3_set_saturation(state, ctrl->val);
break;
case V4L2_CID_SCENE_MODE:
ret = s5c73m3_set_scene_program(state, ctrl->val);
break;
case V4L2_CID_SHARPNESS:
ret = s5c73m3_set_sharpness(state, ctrl->val);
break;
case V4L2_CID_WIDE_DYNAMIC_RANGE:
ret = s5c73m3_isp_command(state, COMM_WDR, !!ctrl->val);
break;
case V4L2_CID_ZOOM_ABSOLUTE:
ret = s5c73m3_isp_command(state, COMM_ZOOM_STEP, ctrl->val);
break;
}
unlock:
mutex_unlock(&state->lock);
return ret;
}
static const struct v4l2_ctrl_ops s5c73m3_ctrl_ops = {
.g_volatile_ctrl = s5c73m3_g_volatile_ctrl,
.s_ctrl = s5c73m3_s_ctrl,
};
/* Supported manual ISO values */
static const s64 iso_qmenu[] = {
/* COMM_ISO: 0x0001...0x0004 */
100, 200, 400, 800,
};
/* Supported exposure bias values (-2.0EV...+2.0EV) */
static const s64 ev_bias_qmenu[] = {
/* COMM_EV: 0x0000...0x0008 */
-2000, -1500, -1000, -500, 0, 500, 1000, 1500, 2000
};
int s5c73m3_init_controls(struct s5c73m3 *state)
{
const struct v4l2_ctrl_ops *ops = &s5c73m3_ctrl_ops;
struct s5c73m3_ctrls *ctrls = &state->ctrls;
struct v4l2_ctrl_handler *hdl = &ctrls->handler;
int ret = v4l2_ctrl_handler_init(hdl, 22);
if (ret)
return ret;
/* White balance */
ctrls->auto_wb = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
9, ~0x15e, V4L2_WHITE_BALANCE_AUTO);
/* Exposure (only automatic exposure) */
ctrls->auto_exposure = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_EXPOSURE_AUTO, 0, ~0x01, V4L2_EXPOSURE_AUTO);
ctrls->exposure_bias = v4l2_ctrl_new_int_menu(hdl, ops,
V4L2_CID_AUTO_EXPOSURE_BIAS,
ARRAY_SIZE(ev_bias_qmenu) - 1,
ARRAY_SIZE(ev_bias_qmenu)/2 - 1,
ev_bias_qmenu);
ctrls->exposure_metering = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_EXPOSURE_METERING,
2, ~0x7, V4L2_EXPOSURE_METERING_AVERAGE);
/* Auto focus */
ctrls->focus_auto = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_FOCUS_AUTO, 0, 1, 1, 0);
ctrls->af_start = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_AUTO_FOCUS_START, 0, 1, 1, 0);
ctrls->af_stop = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_AUTO_FOCUS_STOP, 0, 1, 1, 0);
ctrls->af_status = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_AUTO_FOCUS_STATUS, 0,
(V4L2_AUTO_FOCUS_STATUS_BUSY |
V4L2_AUTO_FOCUS_STATUS_REACHED |
V4L2_AUTO_FOCUS_STATUS_FAILED),
0, V4L2_AUTO_FOCUS_STATUS_IDLE);
ctrls->af_distance = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_AUTO_FOCUS_RANGE,
V4L2_AUTO_FOCUS_RANGE_MACRO,
~(1 << V4L2_AUTO_FOCUS_RANGE_NORMAL |
1 << V4L2_AUTO_FOCUS_RANGE_MACRO),
V4L2_AUTO_FOCUS_RANGE_NORMAL);
/* ISO sensitivity */
ctrls->auto_iso = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_ISO_SENSITIVITY_AUTO, 1, 0,
V4L2_ISO_SENSITIVITY_AUTO);
ctrls->iso = v4l2_ctrl_new_int_menu(hdl, ops,
V4L2_CID_ISO_SENSITIVITY, ARRAY_SIZE(iso_qmenu) - 1,
ARRAY_SIZE(iso_qmenu)/2 - 1, iso_qmenu);
ctrls->contrast = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_CONTRAST, -2, 2, 1, 0);
ctrls->saturation = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_SATURATION, -2, 2, 1, 0);
ctrls->sharpness = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_SHARPNESS, -2, 2, 1, 0);
ctrls->zoom = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_ZOOM_ABSOLUTE, 0, 30, 1, 0);
ctrls->colorfx = v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_COLORFX,
V4L2_COLORFX_AQUA, ~0x40f, V4L2_COLORFX_NONE);
ctrls->wdr = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_WIDE_DYNAMIC_RANGE, 0, 1, 1, 0);
ctrls->stabilization = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_IMAGE_STABILIZATION, 0, 1, 1, 0);
v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_POWER_LINE_FREQUENCY,
V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
ctrls->jpeg_quality = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_JPEG_COMPRESSION_QUALITY, 1, 100, 1, 80);
ctrls->scene_mode = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_SCENE_MODE, V4L2_SCENE_MODE_TEXT, ~0x3fff,
V4L2_SCENE_MODE_NONE);
ctrls->aaa_lock = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_3A_LOCK, 0, 0x7, 0, 0);
if (hdl->error) {
ret = hdl->error;
v4l2_ctrl_handler_free(hdl);
return ret;
}
v4l2_ctrl_auto_cluster(3, &ctrls->auto_exposure, 0, false);
ctrls->auto_iso->flags |= V4L2_CTRL_FLAG_VOLATILE |
V4L2_CTRL_FLAG_UPDATE;
v4l2_ctrl_auto_cluster(2, &ctrls->auto_iso, 0, false);
ctrls->af_status->flags |= V4L2_CTRL_FLAG_VOLATILE;
v4l2_ctrl_cluster(6, &ctrls->focus_auto);
state->sensor_sd.ctrl_handler = hdl;
return 0;
}