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linux/drivers/media/i2c/vs6624.c
Jia-Ju Bai a8a4d304b1 media: i2c: vs6624: Replace mdelay() with msleep() and usleep_range() in vs6624_probe() 
vs6624_probe() is never called in atomic context.
It calls mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep() and usleep_range().

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-27 08:11:57 -04:00

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/*
* vs6624.c ST VS6624 CMOS image sensor driver
*
* Copyright (c) 2011 Analog Devices Inc.
*
* 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/delay.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-image-sizes.h>
#include "vs6624_regs.h"
#define MAX_FRAME_RATE 30
struct vs6624 {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
struct v4l2_fract frame_rate;
struct v4l2_mbus_framefmt fmt;
unsigned ce_pin;
};
static const struct vs6624_format {
u32 mbus_code;
enum v4l2_colorspace colorspace;
} vs6624_formats[] = {
{
.mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
.colorspace = V4L2_COLORSPACE_JPEG,
},
{
.mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
.colorspace = V4L2_COLORSPACE_JPEG,
},
{
.mbus_code = MEDIA_BUS_FMT_RGB565_2X8_LE,
.colorspace = V4L2_COLORSPACE_SRGB,
},
};
static const struct v4l2_mbus_framefmt vs6624_default_fmt = {
.width = VGA_WIDTH,
.height = VGA_HEIGHT,
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.field = V4L2_FIELD_NONE,
.colorspace = V4L2_COLORSPACE_JPEG,
};
static const u16 vs6624_p1[] = {
0x8104, 0x03,
0x8105, 0x01,
0xc900, 0x03,
0xc904, 0x47,
0xc905, 0x10,
0xc906, 0x80,
0xc907, 0x3a,
0x903a, 0x02,
0x903b, 0x47,
0x903c, 0x15,
0xc908, 0x31,
0xc909, 0xdc,
0xc90a, 0x80,
0xc90b, 0x44,
0x9044, 0x02,
0x9045, 0x31,
0x9046, 0xe2,
0xc90c, 0x07,
0xc90d, 0xe0,
0xc90e, 0x80,
0xc90f, 0x47,
0x9047, 0x90,
0x9048, 0x83,
0x9049, 0x81,
0x904a, 0xe0,
0x904b, 0x60,
0x904c, 0x08,
0x904d, 0x90,
0x904e, 0xc0,
0x904f, 0x43,
0x9050, 0x74,
0x9051, 0x01,
0x9052, 0xf0,
0x9053, 0x80,
0x9054, 0x05,
0x9055, 0xE4,
0x9056, 0x90,
0x9057, 0xc0,
0x9058, 0x43,
0x9059, 0xf0,
0x905a, 0x02,
0x905b, 0x07,
0x905c, 0xec,
0xc910, 0x5d,
0xc911, 0xca,
0xc912, 0x80,
0xc913, 0x5d,
0x905d, 0xa3,
0x905e, 0x04,
0x905f, 0xf0,
0x9060, 0xa3,
0x9061, 0x04,
0x9062, 0xf0,
0x9063, 0x22,
0xc914, 0x72,
0xc915, 0x92,
0xc916, 0x80,
0xc917, 0x64,
0x9064, 0x74,
0x9065, 0x01,
0x9066, 0x02,
0x9067, 0x72,
0x9068, 0x95,
0xc918, 0x47,
0xc919, 0xf2,
0xc91a, 0x81,
0xc91b, 0x69,
0x9169, 0x74,
0x916a, 0x02,
0x916b, 0xf0,
0x916c, 0xec,
0x916d, 0xb4,
0x916e, 0x10,
0x916f, 0x0a,
0x9170, 0x90,
0x9171, 0x80,
0x9172, 0x16,
0x9173, 0xe0,
0x9174, 0x70,
0x9175, 0x04,
0x9176, 0x90,
0x9177, 0xd3,
0x9178, 0xc4,
0x9179, 0xf0,
0x917a, 0x22,
0xc91c, 0x0a,
0xc91d, 0xbe,
0xc91e, 0x80,
0xc91f, 0x73,
0x9073, 0xfc,
0x9074, 0xa3,
0x9075, 0xe0,
0x9076, 0xf5,
0x9077, 0x82,
0x9078, 0x8c,
0x9079, 0x83,
0x907a, 0xa3,
0x907b, 0xa3,
0x907c, 0xe0,
0x907d, 0xfc,
0x907e, 0xa3,
0x907f, 0xe0,
0x9080, 0xc3,
0x9081, 0x9f,
0x9082, 0xff,
0x9083, 0xec,
0x9084, 0x9e,
0x9085, 0xfe,
0x9086, 0x02,
0x9087, 0x0a,
0x9088, 0xea,
0xc920, 0x47,
0xc921, 0x38,
0xc922, 0x80,
0xc923, 0x89,
0x9089, 0xec,
0x908a, 0xd3,
0x908b, 0x94,
0x908c, 0x20,
0x908d, 0x40,
0x908e, 0x01,
0x908f, 0x1c,
0x9090, 0x90,
0x9091, 0xd3,
0x9092, 0xd4,
0x9093, 0xec,
0x9094, 0xf0,
0x9095, 0x02,
0x9096, 0x47,
0x9097, 0x3d,
0xc924, 0x45,
0xc925, 0xca,
0xc926, 0x80,
0xc927, 0x98,
0x9098, 0x12,
0x9099, 0x77,
0x909a, 0xd6,
0x909b, 0x02,
0x909c, 0x45,
0x909d, 0xcd,
0xc928, 0x20,
0xc929, 0xd5,
0xc92a, 0x80,
0xc92b, 0x9e,
0x909e, 0x90,
0x909f, 0x82,
0x90a0, 0x18,
0x90a1, 0xe0,
0x90a2, 0xb4,
0x90a3, 0x03,
0x90a4, 0x0e,
0x90a5, 0x90,
0x90a6, 0x83,
0x90a7, 0xbf,
0x90a8, 0xe0,
0x90a9, 0x60,
0x90aa, 0x08,
0x90ab, 0x90,
0x90ac, 0x81,
0x90ad, 0xfc,
0x90ae, 0xe0,
0x90af, 0xff,
0x90b0, 0xc3,
0x90b1, 0x13,
0x90b2, 0xf0,
0x90b3, 0x90,
0x90b4, 0x81,
0x90b5, 0xfc,
0x90b6, 0xe0,
0x90b7, 0xff,
0x90b8, 0x02,
0x90b9, 0x20,
0x90ba, 0xda,
0xc92c, 0x70,
0xc92d, 0xbc,
0xc92e, 0x80,
0xc92f, 0xbb,
0x90bb, 0x90,
0x90bc, 0x82,
0x90bd, 0x18,
0x90be, 0xe0,
0x90bf, 0xb4,
0x90c0, 0x03,
0x90c1, 0x06,
0x90c2, 0x90,
0x90c3, 0xc1,
0x90c4, 0x06,
0x90c5, 0x74,
0x90c6, 0x05,
0x90c7, 0xf0,
0x90c8, 0x90,
0x90c9, 0xd3,
0x90ca, 0xa0,
0x90cb, 0x02,
0x90cc, 0x70,
0x90cd, 0xbf,
0xc930, 0x72,
0xc931, 0x21,
0xc932, 0x81,
0xc933, 0x3b,
0x913b, 0x7d,
0x913c, 0x02,
0x913d, 0x7f,
0x913e, 0x7b,
0x913f, 0x02,
0x9140, 0x72,
0x9141, 0x25,
0xc934, 0x28,
0xc935, 0xae,
0xc936, 0x80,
0xc937, 0xd2,
0x90d2, 0xf0,
0x90d3, 0x90,
0x90d4, 0xd2,
0x90d5, 0x0a,
0x90d6, 0x02,
0x90d7, 0x28,
0x90d8, 0xb4,
0xc938, 0x28,
0xc939, 0xb1,
0xc93a, 0x80,
0xc93b, 0xd9,
0x90d9, 0x90,
0x90da, 0x83,
0x90db, 0xba,
0x90dc, 0xe0,
0x90dd, 0xff,
0x90de, 0x90,
0x90df, 0xd2,
0x90e0, 0x08,
0x90e1, 0xe0,
0x90e2, 0xe4,
0x90e3, 0xef,
0x90e4, 0xf0,
0x90e5, 0xa3,
0x90e6, 0xe0,
0x90e7, 0x74,
0x90e8, 0xff,
0x90e9, 0xf0,
0x90ea, 0x90,
0x90eb, 0xd2,
0x90ec, 0x0a,
0x90ed, 0x02,
0x90ee, 0x28,
0x90ef, 0xb4,
0xc93c, 0x29,
0xc93d, 0x79,
0xc93e, 0x80,
0xc93f, 0xf0,
0x90f0, 0xf0,
0x90f1, 0x90,
0x90f2, 0xd2,
0x90f3, 0x0e,
0x90f4, 0x02,
0x90f5, 0x29,
0x90f6, 0x7f,
0xc940, 0x29,
0xc941, 0x7c,
0xc942, 0x80,
0xc943, 0xf7,
0x90f7, 0x90,
0x90f8, 0x83,
0x90f9, 0xba,
0x90fa, 0xe0,
0x90fb, 0xff,
0x90fc, 0x90,
0x90fd, 0xd2,
0x90fe, 0x0c,
0x90ff, 0xe0,
0x9100, 0xe4,
0x9101, 0xef,
0x9102, 0xf0,
0x9103, 0xa3,
0x9104, 0xe0,
0x9105, 0x74,
0x9106, 0xff,
0x9107, 0xf0,
0x9108, 0x90,
0x9109, 0xd2,
0x910a, 0x0e,
0x910b, 0x02,
0x910c, 0x29,
0x910d, 0x7f,
0xc944, 0x2a,
0xc945, 0x42,
0xc946, 0x81,
0xc947, 0x0e,
0x910e, 0xf0,
0x910f, 0x90,
0x9110, 0xd2,
0x9111, 0x12,
0x9112, 0x02,
0x9113, 0x2a,
0x9114, 0x48,
0xc948, 0x2a,
0xc949, 0x45,
0xc94a, 0x81,
0xc94b, 0x15,
0x9115, 0x90,
0x9116, 0x83,
0x9117, 0xba,
0x9118, 0xe0,
0x9119, 0xff,
0x911a, 0x90,
0x911b, 0xd2,
0x911c, 0x10,
0x911d, 0xe0,
0x911e, 0xe4,
0x911f, 0xef,
0x9120, 0xf0,
0x9121, 0xa3,
0x9122, 0xe0,
0x9123, 0x74,
0x9124, 0xff,
0x9125, 0xf0,
0x9126, 0x90,
0x9127, 0xd2,
0x9128, 0x12,
0x9129, 0x02,
0x912a, 0x2a,
0x912b, 0x48,
0xc900, 0x01,
0x0000, 0x00,
};
static const u16 vs6624_p2[] = {
0x806f, 0x01,
0x058c, 0x01,
0x0000, 0x00,
};
static const u16 vs6624_run_setup[] = {
0x1d18, 0x00, /* Enableconstrainedwhitebalance */
VS6624_PEAK_MIN_OUT_G_MSB, 0x3c, /* Damper PeakGain Output MSB */
VS6624_PEAK_MIN_OUT_G_LSB, 0x66, /* Damper PeakGain Output LSB */
VS6624_CM_LOW_THR_MSB, 0x65, /* Damper Low MSB */
VS6624_CM_LOW_THR_LSB, 0xd1, /* Damper Low LSB */
VS6624_CM_HIGH_THR_MSB, 0x66, /* Damper High MSB */
VS6624_CM_HIGH_THR_LSB, 0x62, /* Damper High LSB */
VS6624_CM_MIN_OUT_MSB, 0x00, /* Damper Min output MSB */
VS6624_CM_MIN_OUT_LSB, 0x00, /* Damper Min output LSB */
VS6624_NORA_DISABLE, 0x00, /* Nora fDisable */
VS6624_NORA_USAGE, 0x04, /* Nora usage */
VS6624_NORA_LOW_THR_MSB, 0x63, /* Damper Low MSB Changed 0x63 to 0x65 */
VS6624_NORA_LOW_THR_LSB, 0xd1, /* Damper Low LSB */
VS6624_NORA_HIGH_THR_MSB, 0x68, /* Damper High MSB */
VS6624_NORA_HIGH_THR_LSB, 0xdd, /* Damper High LSB */
VS6624_NORA_MIN_OUT_MSB, 0x3a, /* Damper Min output MSB */
VS6624_NORA_MIN_OUT_LSB, 0x00, /* Damper Min output LSB */
VS6624_F2B_DISABLE, 0x00, /* Disable */
0x1d8a, 0x30, /* MAXWeightHigh */
0x1d91, 0x62, /* fpDamperLowThresholdHigh MSB */
0x1d92, 0x4a, /* fpDamperLowThresholdHigh LSB */
0x1d95, 0x65, /* fpDamperHighThresholdHigh MSB */
0x1d96, 0x0e, /* fpDamperHighThresholdHigh LSB */
0x1da1, 0x3a, /* fpMinimumDamperOutputLow MSB */
0x1da2, 0xb8, /* fpMinimumDamperOutputLow LSB */
0x1e08, 0x06, /* MAXWeightLow */
0x1e0a, 0x0a, /* MAXWeightHigh */
0x1601, 0x3a, /* Red A MSB */
0x1602, 0x14, /* Red A LSB */
0x1605, 0x3b, /* Blue A MSB */
0x1606, 0x85, /* BLue A LSB */
0x1609, 0x3b, /* RED B MSB */
0x160a, 0x85, /* RED B LSB */
0x160d, 0x3a, /* Blue B MSB */
0x160e, 0x14, /* Blue B LSB */
0x1611, 0x30, /* Max Distance from Locus MSB */
0x1612, 0x8f, /* Max Distance from Locus MSB */
0x1614, 0x01, /* Enable constrainer */
0x0000, 0x00,
};
static const u16 vs6624_default[] = {
VS6624_CONTRAST0, 0x84,
VS6624_SATURATION0, 0x75,
VS6624_GAMMA0, 0x11,
VS6624_CONTRAST1, 0x84,
VS6624_SATURATION1, 0x75,
VS6624_GAMMA1, 0x11,
VS6624_MAN_RG, 0x80,
VS6624_MAN_GG, 0x80,
VS6624_MAN_BG, 0x80,
VS6624_WB_MODE, 0x1,
VS6624_EXPO_COMPENSATION, 0xfe,
VS6624_EXPO_METER, 0x0,
VS6624_LIGHT_FREQ, 0x64,
VS6624_PEAK_GAIN, 0xe,
VS6624_PEAK_LOW_THR, 0x28,
VS6624_HMIRROR0, 0x0,
VS6624_VFLIP0, 0x0,
VS6624_ZOOM_HSTEP0_MSB, 0x0,
VS6624_ZOOM_HSTEP0_LSB, 0x1,
VS6624_ZOOM_VSTEP0_MSB, 0x0,
VS6624_ZOOM_VSTEP0_LSB, 0x1,
VS6624_PAN_HSTEP0_MSB, 0x0,
VS6624_PAN_HSTEP0_LSB, 0xf,
VS6624_PAN_VSTEP0_MSB, 0x0,
VS6624_PAN_VSTEP0_LSB, 0xf,
VS6624_SENSOR_MODE, 0x1,
VS6624_SYNC_CODE_SETUP, 0x21,
VS6624_DISABLE_FR_DAMPER, 0x0,
VS6624_FR_DEN, 0x1,
VS6624_FR_NUM_LSB, 0xf,
VS6624_INIT_PIPE_SETUP, 0x0,
VS6624_IMG_FMT0, 0x0,
VS6624_YUV_SETUP, 0x1,
VS6624_IMAGE_SIZE0, 0x2,
0x0000, 0x00,
};
static inline struct vs6624 *to_vs6624(struct v4l2_subdev *sd)
{
return container_of(sd, struct vs6624, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct vs6624, hdl)->sd;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vs6624_read(struct v4l2_subdev *sd, u16 index)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 buf[2];
buf[0] = index >> 8;
buf[1] = index;
i2c_master_send(client, buf, 2);
i2c_master_recv(client, buf, 1);
return buf[0];
}
#endif
static int vs6624_write(struct v4l2_subdev *sd, u16 index,
u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 buf[3];
buf[0] = index >> 8;
buf[1] = index;
buf[2] = value;
return i2c_master_send(client, buf, 3);
}
static int vs6624_writeregs(struct v4l2_subdev *sd, const u16 *regs)
{
u16 reg;
u8 data;
while (*regs != 0x00) {
reg = *regs++;
data = *regs++;
vs6624_write(sd, reg, data);
}
return 0;
}
static int vs6624_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
switch (ctrl->id) {
case V4L2_CID_CONTRAST:
vs6624_write(sd, VS6624_CONTRAST0, ctrl->val);
break;
case V4L2_CID_SATURATION:
vs6624_write(sd, VS6624_SATURATION0, ctrl->val);
break;
case V4L2_CID_HFLIP:
vs6624_write(sd, VS6624_HMIRROR0, ctrl->val);
break;
case V4L2_CID_VFLIP:
vs6624_write(sd, VS6624_VFLIP0, ctrl->val);
break;
default:
return -EINVAL;
}
return 0;
}
static int vs6624_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->pad || code->index >= ARRAY_SIZE(vs6624_formats))
return -EINVAL;
code->code = vs6624_formats[code->index].mbus_code;
return 0;
}
static int vs6624_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *fmt = &format->format;
struct vs6624 *sensor = to_vs6624(sd);
int index;
if (format->pad)
return -EINVAL;
for (index = 0; index < ARRAY_SIZE(vs6624_formats); index++)
if (vs6624_formats[index].mbus_code == fmt->code)
break;
if (index >= ARRAY_SIZE(vs6624_formats)) {
/* default to first format */
index = 0;
fmt->code = vs6624_formats[0].mbus_code;
}
/* sensor mode is VGA */
if (fmt->width > VGA_WIDTH)
fmt->width = VGA_WIDTH;
if (fmt->height > VGA_HEIGHT)
fmt->height = VGA_HEIGHT;
fmt->width = fmt->width & (~3);
fmt->height = fmt->height & (~3);
fmt->field = V4L2_FIELD_NONE;
fmt->colorspace = vs6624_formats[index].colorspace;
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
cfg->try_fmt = *fmt;
return 0;
}
/* set image format */
switch (fmt->code) {
case MEDIA_BUS_FMT_UYVY8_2X8:
vs6624_write(sd, VS6624_IMG_FMT0, 0x0);
vs6624_write(sd, VS6624_YUV_SETUP, 0x1);
break;
case MEDIA_BUS_FMT_YUYV8_2X8:
vs6624_write(sd, VS6624_IMG_FMT0, 0x0);
vs6624_write(sd, VS6624_YUV_SETUP, 0x3);
break;
case MEDIA_BUS_FMT_RGB565_2X8_LE:
vs6624_write(sd, VS6624_IMG_FMT0, 0x4);
vs6624_write(sd, VS6624_RGB_SETUP, 0x0);
break;
default:
return -EINVAL;
}
/* set image size */
if ((fmt->width == VGA_WIDTH) && (fmt->height == VGA_HEIGHT))
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x2);
else if ((fmt->width == QVGA_WIDTH) && (fmt->height == QVGA_HEIGHT))
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x4);
else if ((fmt->width == QQVGA_WIDTH) && (fmt->height == QQVGA_HEIGHT))
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x6);
else if ((fmt->width == CIF_WIDTH) && (fmt->height == CIF_HEIGHT))
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x3);
else if ((fmt->width == QCIF_WIDTH) && (fmt->height == QCIF_HEIGHT))
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x5);
else if ((fmt->width == QQCIF_WIDTH) && (fmt->height == QQCIF_HEIGHT))
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x7);
else {
vs6624_write(sd, VS6624_IMAGE_SIZE0, 0x8);
vs6624_write(sd, VS6624_MAN_HSIZE0_MSB, fmt->width >> 8);
vs6624_write(sd, VS6624_MAN_HSIZE0_LSB, fmt->width & 0xFF);
vs6624_write(sd, VS6624_MAN_VSIZE0_MSB, fmt->height >> 8);
vs6624_write(sd, VS6624_MAN_VSIZE0_LSB, fmt->height & 0xFF);
vs6624_write(sd, VS6624_CROP_CTRL0, 0x1);
}
sensor->fmt = *fmt;
return 0;
}
static int vs6624_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct vs6624 *sensor = to_vs6624(sd);
if (format->pad)
return -EINVAL;
format->format = sensor->fmt;
return 0;
}
static int vs6624_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *ival)
{
struct vs6624 *sensor = to_vs6624(sd);
ival->interval.numerator = sensor->frame_rate.denominator;
ival->interval.denominator = sensor->frame_rate.numerator;
return 0;
}
static int vs6624_s_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *ival)
{
struct vs6624 *sensor = to_vs6624(sd);
struct v4l2_fract *tpf = &ival->interval;
if (tpf->numerator == 0 || tpf->denominator == 0
|| (tpf->denominator > tpf->numerator * MAX_FRAME_RATE)) {
/* reset to max frame rate */
tpf->numerator = 1;
tpf->denominator = MAX_FRAME_RATE;
}
sensor->frame_rate.numerator = tpf->denominator;
sensor->frame_rate.denominator = tpf->numerator;
vs6624_write(sd, VS6624_DISABLE_FR_DAMPER, 0x0);
vs6624_write(sd, VS6624_FR_NUM_MSB,
sensor->frame_rate.numerator >> 8);
vs6624_write(sd, VS6624_FR_NUM_LSB,
sensor->frame_rate.numerator & 0xFF);
vs6624_write(sd, VS6624_FR_DEN,
sensor->frame_rate.denominator & 0xFF);
return 0;
}
static int vs6624_s_stream(struct v4l2_subdev *sd, int enable)
{
if (enable)
vs6624_write(sd, VS6624_USER_CMD, 0x2);
else
vs6624_write(sd, VS6624_USER_CMD, 0x4);
udelay(100);
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vs6624_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
reg->val = vs6624_read(sd, reg->reg & 0xffff);
reg->size = 1;
return 0;
}
static int vs6624_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
{
vs6624_write(sd, reg->reg & 0xffff, reg->val & 0xff);
return 0;
}
#endif
static const struct v4l2_ctrl_ops vs6624_ctrl_ops = {
.s_ctrl = vs6624_s_ctrl,
};
static const struct v4l2_subdev_core_ops vs6624_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = vs6624_g_register,
.s_register = vs6624_s_register,
#endif
};
static const struct v4l2_subdev_video_ops vs6624_video_ops = {
.s_frame_interval = vs6624_s_frame_interval,
.g_frame_interval = vs6624_g_frame_interval,
.s_stream = vs6624_s_stream,
};
static const struct v4l2_subdev_pad_ops vs6624_pad_ops = {
.enum_mbus_code = vs6624_enum_mbus_code,
.get_fmt = vs6624_get_fmt,
.set_fmt = vs6624_set_fmt,
};
static const struct v4l2_subdev_ops vs6624_ops = {
.core = &vs6624_core_ops,
.video = &vs6624_video_ops,
.pad = &vs6624_pad_ops,
};
static int vs6624_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct vs6624 *sensor;
struct v4l2_subdev *sd;
struct v4l2_ctrl_handler *hdl;
const unsigned *ce;
int ret;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -EIO;
ce = client->dev.platform_data;
if (ce == NULL)
return -EINVAL;
ret = devm_gpio_request_one(&client->dev, *ce, GPIOF_OUT_INIT_HIGH,
"VS6624 Chip Enable");
if (ret) {
v4l_err(client, "failed to request GPIO %d\n", *ce);
return ret;
}
/* wait 100ms before any further i2c writes are performed */
msleep(100);
sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
if (sensor == NULL)
return -ENOMEM;
sd = &sensor->sd;
v4l2_i2c_subdev_init(sd, client, &vs6624_ops);
vs6624_writeregs(sd, vs6624_p1);
vs6624_write(sd, VS6624_MICRO_EN, 0x2);
vs6624_write(sd, VS6624_DIO_EN, 0x1);
usleep_range(10000, 11000);
vs6624_writeregs(sd, vs6624_p2);
vs6624_writeregs(sd, vs6624_default);
vs6624_write(sd, VS6624_HSYNC_SETUP, 0xF);
vs6624_writeregs(sd, vs6624_run_setup);
/* set frame rate */
sensor->frame_rate.numerator = MAX_FRAME_RATE;
sensor->frame_rate.denominator = 1;
vs6624_write(sd, VS6624_DISABLE_FR_DAMPER, 0x0);
vs6624_write(sd, VS6624_FR_NUM_MSB,
sensor->frame_rate.numerator >> 8);
vs6624_write(sd, VS6624_FR_NUM_LSB,
sensor->frame_rate.numerator & 0xFF);
vs6624_write(sd, VS6624_FR_DEN,
sensor->frame_rate.denominator & 0xFF);
sensor->fmt = vs6624_default_fmt;
sensor->ce_pin = *ce;
v4l_info(client, "chip found @ 0x%02x (%s)\n",
client->addr << 1, client->adapter->name);
hdl = &sensor->hdl;
v4l2_ctrl_handler_init(hdl, 4);
v4l2_ctrl_new_std(hdl, &vs6624_ctrl_ops,
V4L2_CID_CONTRAST, 0, 0xFF, 1, 0x87);
v4l2_ctrl_new_std(hdl, &vs6624_ctrl_ops,
V4L2_CID_SATURATION, 0, 0xFF, 1, 0x78);
v4l2_ctrl_new_std(hdl, &vs6624_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(hdl, &vs6624_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
/* hook the control handler into the driver */
sd->ctrl_handler = hdl;
if (hdl->error) {
int err = hdl->error;
v4l2_ctrl_handler_free(hdl);
return err;
}
/* initialize the hardware to the default control values */
ret = v4l2_ctrl_handler_setup(hdl);
if (ret)
v4l2_ctrl_handler_free(hdl);
return ret;
}
static int vs6624_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
return 0;
}
static const struct i2c_device_id vs6624_id[] = {
{"vs6624", 0},
{},
};
MODULE_DEVICE_TABLE(i2c, vs6624_id);
static struct i2c_driver vs6624_driver = {
.driver = {
.name = "vs6624",
},
.probe = vs6624_probe,
.remove = vs6624_remove,
.id_table = vs6624_id,
};
module_i2c_driver(vs6624_driver);
MODULE_DESCRIPTION("VS6624 sensor driver");
MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
MODULE_LICENSE("GPL v2");
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