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fbae3fb154
linux_dsm_epyc7002/drivers/media/video/rj54n1cb0c.c
Wolfram Sang fbae3fb154 i2c: Remove all i2c_set_clientdata(client, NULL) in drivers 
I2C drivers can use the clientdata-pointer to point to private data. As I2C
devices are not really unregistered, but merely detached from their driver, it
used to be the drivers obligation to clear this pointer during remove() or a
failed probe(). As a couple of drivers forgot to do this, it was agreed that it
was cleaner if the i2c-core does this clearance when appropriate, as there is
no guarantee for the lifetime of the clientdata-pointer after remove() anyhow.
This feature was added to the core with commit
e4a7b9b04d to fix the faulty drivers.

As there is no need anymore to clear the clientdata-pointer, remove all current
occurrences in the drivers to simplify the code and prevent confusion.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-06-03 11:33:58 +02:00

1500 lines
36 KiB
C
Raw Blame History

/*
* Driver for RJ54N1CB0C CMOS Image Sensor from Micron
*
* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* 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.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/rj54n1cb0c.h>
#include <media/soc_camera.h>
#include <media/soc_mediabus.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-chip-ident.h>
#define RJ54N1_DEV_CODE 0x0400
#define RJ54N1_DEV_CODE2 0x0401
#define RJ54N1_OUT_SEL 0x0403
#define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404
#define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405
#define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406
#define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407
#define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408
#define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409
#define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a
#define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b
#define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c
#define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d
#define RJ54N1_RESIZE_N 0x040e
#define RJ54N1_RESIZE_N_STEP 0x040f
#define RJ54N1_RESIZE_STEP 0x0410
#define RJ54N1_RESIZE_HOLD_H 0x0411
#define RJ54N1_RESIZE_HOLD_L 0x0412
#define RJ54N1_H_OBEN_OFS 0x0413
#define RJ54N1_V_OBEN_OFS 0x0414
#define RJ54N1_RESIZE_CONTROL 0x0415
#define RJ54N1_STILL_CONTROL 0x0417
#define RJ54N1_INC_USE_SEL_H 0x0425
#define RJ54N1_INC_USE_SEL_L 0x0426
#define RJ54N1_MIRROR_STILL_MODE 0x0427
#define RJ54N1_INIT_START 0x0428
#define RJ54N1_SCALE_1_2_LEV 0x0429
#define RJ54N1_SCALE_4_LEV 0x042a
#define RJ54N1_Y_GAIN 0x04d8
#define RJ54N1_APT_GAIN_UP 0x04fa
#define RJ54N1_RA_SEL_UL 0x0530
#define RJ54N1_BYTE_SWAP 0x0531
#define RJ54N1_OUT_SIGPO 0x053b
#define RJ54N1_WB_SEL_WEIGHT_I 0x054e
#define RJ54N1_BIT8_WB 0x0569
#define RJ54N1_HCAPS_WB 0x056a
#define RJ54N1_VCAPS_WB 0x056b
#define RJ54N1_HCAPE_WB 0x056c
#define RJ54N1_VCAPE_WB 0x056d
#define RJ54N1_EXPOSURE_CONTROL 0x058c
#define RJ54N1_FRAME_LENGTH_S_H 0x0595
#define RJ54N1_FRAME_LENGTH_S_L 0x0596
#define RJ54N1_FRAME_LENGTH_P_H 0x0597
#define RJ54N1_FRAME_LENGTH_P_L 0x0598
#define RJ54N1_PEAK_H 0x05b7
#define RJ54N1_PEAK_50 0x05b8
#define RJ54N1_PEAK_60 0x05b9
#define RJ54N1_PEAK_DIFF 0x05ba
#define RJ54N1_IOC 0x05ef
#define RJ54N1_TG_BYPASS 0x0700
#define RJ54N1_PLL_L 0x0701
#define RJ54N1_PLL_N 0x0702
#define RJ54N1_PLL_EN 0x0704
#define RJ54N1_RATIO_TG 0x0706
#define RJ54N1_RATIO_T 0x0707
#define RJ54N1_RATIO_R 0x0708
#define RJ54N1_RAMP_TGCLK_EN 0x0709
#define RJ54N1_OCLK_DSP 0x0710
#define RJ54N1_RATIO_OP 0x0711
#define RJ54N1_RATIO_O 0x0712
#define RJ54N1_OCLK_SEL_EN 0x0713
#define RJ54N1_CLK_RST 0x0717
#define RJ54N1_RESET_STANDBY 0x0718
#define RJ54N1_FWFLG 0x07fe
#define E_EXCLK (1 << 7)
#define SOFT_STDBY (1 << 4)
#define SEN_RSTX (1 << 2)
#define TG_RSTX (1 << 1)
#define DSP_RSTX (1 << 0)
#define RESIZE_HOLD_SEL (1 << 2)
#define RESIZE_GO (1 << 1)
/*
* When cropping, the camera automatically centers the cropped region, there
* doesn't seem to be a way to specify an explicit location of the rectangle.
*/
#define RJ54N1_COLUMN_SKIP 0
#define RJ54N1_ROW_SKIP 0
#define RJ54N1_MAX_WIDTH 1600
#define RJ54N1_MAX_HEIGHT 1200
#define PLL_L 2
#define PLL_N 0x31
/* I2C addresses: 0x50, 0x51, 0x60, 0x61 */
/* RJ54N1CB0C has only one fixed colorspace per pixelcode */
struct rj54n1_datafmt {
enum v4l2_mbus_pixelcode code;
enum v4l2_colorspace colorspace;
};
/* Find a data format by a pixel code in an array */
static const struct rj54n1_datafmt *rj54n1_find_datafmt(
enum v4l2_mbus_pixelcode code, const struct rj54n1_datafmt *fmt,
int n)
{
int i;
for (i = 0; i < n; i++)
if (fmt[i].code == code)
return fmt + i;
return NULL;
}
static const struct rj54n1_datafmt rj54n1_colour_fmts[] = {
{V4L2_MBUS_FMT_YUYV8_2X8_LE, V4L2_COLORSPACE_JPEG},
{V4L2_MBUS_FMT_YVYU8_2X8_LE, V4L2_COLORSPACE_JPEG},
{V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
{V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
{V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
{V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB},
{V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
{V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB},
{V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
};
struct rj54n1_clock_div {
u8 ratio_tg; /* can be 0 or an odd number */
u8 ratio_t;
u8 ratio_r;
u8 ratio_op;
u8 ratio_o;
};
struct rj54n1 {
struct v4l2_subdev subdev;
struct rj54n1_clock_div clk_div;
const struct rj54n1_datafmt *fmt;
struct v4l2_rect rect; /* Sensor window */
unsigned int tgclk_mhz;
bool auto_wb;
unsigned short width; /* Output window */
unsigned short height;
unsigned short resize; /* Sensor * 1024 / resize = Output */
unsigned short scale;
u8 bank;
};
struct rj54n1_reg_val {
u16 reg;
u8 val;
};
static const struct rj54n1_reg_val bank_4[] = {
{0x417, 0},
{0x42c, 0},
{0x42d, 0xf0},
{0x42e, 0},
{0x42f, 0x50},
{0x430, 0xf5},
{0x431, 0x16},
{0x432, 0x20},
{0x433, 0},
{0x434, 0xc8},
{0x43c, 8},
{0x43e, 0x90},
{0x445, 0x83},
{0x4ba, 0x58},
{0x4bb, 4},
{0x4bc, 0x20},
{0x4db, 4},
{0x4fe, 2},
};
static const struct rj54n1_reg_val bank_5[] = {
{0x514, 0},
{0x516, 0},
{0x518, 0},
{0x51a, 0},
{0x51d, 0xff},
{0x56f, 0x28},
{0x575, 0x40},
{0x5bc, 0x48},
{0x5c1, 6},
{0x5e5, 0x11},
{0x5e6, 0x43},
{0x5e7, 0x33},
{0x5e8, 0x21},
{0x5e9, 0x30},
{0x5ea, 0x0},
{0x5eb, 0xa5},
{0x5ec, 0xff},
{0x5fe, 2},
};
static const struct rj54n1_reg_val bank_7[] = {
{0x70a, 0},
{0x714, 0xff},
{0x715, 0xff},
{0x716, 0x1f},
{0x7FE, 2},
};
static const struct rj54n1_reg_val bank_8[] = {
{0x800, 0x00},
{0x801, 0x01},
{0x802, 0x61},
{0x805, 0x00},
{0x806, 0x00},
{0x807, 0x00},
{0x808, 0x00},
{0x809, 0x01},
{0x80A, 0x61},
{0x80B, 0x00},
{0x80C, 0x01},
{0x80D, 0x00},
{0x80E, 0x00},
{0x80F, 0x00},
{0x810, 0x00},
{0x811, 0x01},
{0x812, 0x61},
{0x813, 0x00},
{0x814, 0x11},
{0x815, 0x00},
{0x816, 0x41},
{0x817, 0x00},
{0x818, 0x51},
{0x819, 0x01},
{0x81A, 0x1F},
{0x81B, 0x00},
{0x81C, 0x01},
{0x81D, 0x00},
{0x81E, 0x11},
{0x81F, 0x00},
{0x820, 0x41},
{0x821, 0x00},
{0x822, 0x51},
{0x823, 0x00},
{0x824, 0x00},
{0x825, 0x00},
{0x826, 0x47},
{0x827, 0x01},
{0x828, 0x4F},
{0x829, 0x00},
{0x82A, 0x00},
{0x82B, 0x00},
{0x82C, 0x30},
{0x82D, 0x00},
{0x82E, 0x40},
{0x82F, 0x00},
{0x830, 0xB3},
{0x831, 0x00},
{0x832, 0xE3},
{0x833, 0x00},
{0x834, 0x00},
{0x835, 0x00},
{0x836, 0x00},
{0x837, 0x00},
{0x838, 0x00},
{0x839, 0x01},
{0x83A, 0x61},
{0x83B, 0x00},
{0x83C, 0x01},
{0x83D, 0x00},
{0x83E, 0x00},
{0x83F, 0x00},
{0x840, 0x00},
{0x841, 0x01},
{0x842, 0x61},
{0x843, 0x00},
{0x844, 0x1D},
{0x845, 0x00},
{0x846, 0x00},
{0x847, 0x00},
{0x848, 0x00},
{0x849, 0x01},
{0x84A, 0x1F},
{0x84B, 0x00},
{0x84C, 0x05},
{0x84D, 0x00},
{0x84E, 0x19},
{0x84F, 0x01},
{0x850, 0x21},
{0x851, 0x01},
{0x852, 0x5D},
{0x853, 0x00},
{0x854, 0x00},
{0x855, 0x00},
{0x856, 0x19},
{0x857, 0x01},
{0x858, 0x21},
{0x859, 0x00},
{0x85A, 0x00},
{0x85B, 0x00},
{0x85C, 0x00},
{0x85D, 0x00},
{0x85E, 0x00},
{0x85F, 0x00},
{0x860, 0xB3},
{0x861, 0x00},
{0x862, 0xE3},
{0x863, 0x00},
{0x864, 0x00},
{0x865, 0x00},
{0x866, 0x00},
{0x867, 0x00},
{0x868, 0x00},
{0x869, 0xE2},
{0x86A, 0x00},
{0x86B, 0x01},
{0x86C, 0x06},
{0x86D, 0x00},
{0x86E, 0x00},
{0x86F, 0x00},
{0x870, 0x60},
{0x871, 0x8C},
{0x872, 0x10},
{0x873, 0x00},
{0x874, 0xE0},
{0x875, 0x00},
{0x876, 0x27},
{0x877, 0x01},
{0x878, 0x00},
{0x879, 0x00},
{0x87A, 0x00},
{0x87B, 0x03},
{0x87C, 0x00},
{0x87D, 0x00},
{0x87E, 0x00},
{0x87F, 0x00},
{0x880, 0x00},
{0x881, 0x00},
{0x882, 0x00},
{0x883, 0x00},
{0x884, 0x00},
{0x885, 0x00},
{0x886, 0xF8},
{0x887, 0x00},
{0x888, 0x03},
{0x889, 0x00},
{0x88A, 0x64},
{0x88B, 0x00},
{0x88C, 0x03},
{0x88D, 0x00},
{0x88E, 0xB1},
{0x88F, 0x00},
{0x890, 0x03},
{0x891, 0x01},
{0x892, 0x1D},
{0x893, 0x00},
{0x894, 0x03},
{0x895, 0x01},
{0x896, 0x4B},
{0x897, 0x00},
{0x898, 0xE5},
{0x899, 0x00},
{0x89A, 0x01},
{0x89B, 0x00},
{0x89C, 0x01},
{0x89D, 0x04},
{0x89E, 0xC8},
{0x89F, 0x00},
{0x8A0, 0x01},
{0x8A1, 0x01},
{0x8A2, 0x61},
{0x8A3, 0x00},
{0x8A4, 0x01},
{0x8A5, 0x00},
{0x8A6, 0x00},
{0x8A7, 0x00},
{0x8A8, 0x00},
{0x8A9, 0x00},
{0x8AA, 0x7F},
{0x8AB, 0x03},
{0x8AC, 0x00},
{0x8AD, 0x00},
{0x8AE, 0x00},
{0x8AF, 0x00},
{0x8B0, 0x00},
{0x8B1, 0x00},
{0x8B6, 0x00},
{0x8B7, 0x01},
{0x8B8, 0x00},
{0x8B9, 0x00},
{0x8BA, 0x02},
{0x8BB, 0x00},
{0x8BC, 0xFF},
{0x8BD, 0x00},
{0x8FE, 2},
};
static const struct rj54n1_reg_val bank_10[] = {
{0x10bf, 0x69}
};
/* Clock dividers - these are default register values, divider = register + 1 */
static const struct rj54n1_clock_div clk_div = {
.ratio_tg = 3 /* default: 5 */,
.ratio_t = 4 /* default: 1 */,
.ratio_r = 4 /* default: 0 */,
.ratio_op = 1 /* default: 5 */,
.ratio_o = 9 /* default: 0 */,
};
static struct rj54n1 *to_rj54n1(const struct i2c_client *client)
{
return container_of(i2c_get_clientdata(client), struct rj54n1, subdev);
}
static int reg_read(struct i2c_client *client, const u16 reg)
{
struct rj54n1 *rj54n1 = to_rj54n1(client);
int ret;
/* set bank */
if (rj54n1->bank != reg >> 8) {
dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
if (ret < 0)
return ret;
rj54n1->bank = reg >> 8;
}
return i2c_smbus_read_byte_data(client, reg & 0xff);
}
static int reg_write(struct i2c_client *client, const u16 reg,
const u8 data)
{
struct rj54n1 *rj54n1 = to_rj54n1(client);
int ret;
/* set bank */
if (rj54n1->bank != reg >> 8) {
dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
if (ret < 0)
return ret;
rj54n1->bank = reg >> 8;
}
dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data);
return i2c_smbus_write_byte_data(client, reg & 0xff, data);
}
static int reg_set(struct i2c_client *client, const u16 reg,
const u8 data, const u8 mask)
{
int ret;
ret = reg_read(client, reg);
if (ret < 0)
return ret;
return reg_write(client, reg, (ret & ~mask) | (data & mask));
}
static int reg_write_multiple(struct i2c_client *client,
const struct rj54n1_reg_val *rv, const int n)
{
int i, ret;
for (i = 0; i < n; i++) {
ret = reg_write(client, rv->reg, rv->val);
if (ret < 0)
return ret;
rv++;
}
return 0;
}
static int rj54n1_enum_fmt(struct v4l2_subdev *sd, int index,
enum v4l2_mbus_pixelcode *code)
{
if ((unsigned int)index >= ARRAY_SIZE(rj54n1_colour_fmts))
return -EINVAL;
*code = rj54n1_colour_fmts[index].code;
return 0;
}
static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable)
{
struct i2c_client *client = sd->priv;
/* Switch between preview and still shot modes */
return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80);
}
static int rj54n1_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct i2c_client *client = sd->priv;
/* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */
if (flags & SOCAM_PCLK_SAMPLE_RISING)
return reg_write(client, RJ54N1_OUT_SIGPO, 1 << 4);
else
return reg_write(client, RJ54N1_OUT_SIGPO, 0);
}
static unsigned long rj54n1_query_bus_param(struct soc_camera_device *icd)
{
struct soc_camera_link *icl = to_soc_camera_link(icd);
const unsigned long flags =
SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
SOCAM_MASTER | SOCAM_DATAWIDTH_8 |
SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
SOCAM_DATA_ACTIVE_HIGH;
return soc_camera_apply_sensor_flags(icl, flags);
}
static int rj54n1_set_rect(struct i2c_client *client,
u16 reg_x, u16 reg_y, u16 reg_xy,
u32 width, u32 height)
{
int ret;
ret = reg_write(client, reg_xy,
((width >> 4) & 0x70) |
((height >> 8) & 7));
if (!ret)
ret = reg_write(client, reg_x, width & 0xff);
if (!ret)
ret = reg_write(client, reg_y, height & 0xff);
return ret;
}
/*
* Some commands, specifically certain initialisation sequences, require
* a commit operation.
*/
static int rj54n1_commit(struct i2c_client *client)
{
int ret = reg_write(client, RJ54N1_INIT_START, 1);
msleep(10);
if (!ret)
ret = reg_write(client, RJ54N1_INIT_START, 0);
return ret;
}
static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
s32 *out_w, s32 *out_h);
static int rj54n1_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
struct v4l2_rect *rect = &a->c;
int dummy = 0, output_w, output_h,
input_w = rect->width, input_h = rect->height;
int ret;
/* arbitrary minimum width and height, edges unimportant */
soc_camera_limit_side(&dummy, &input_w,
RJ54N1_COLUMN_SKIP, 8, RJ54N1_MAX_WIDTH);
soc_camera_limit_side(&dummy, &input_h,
RJ54N1_ROW_SKIP, 8, RJ54N1_MAX_HEIGHT);
output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize;
output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize;
dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n",
input_w, input_h, rj54n1->resize, output_w, output_h);
ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
if (ret < 0)
return ret;
rj54n1->width = output_w;
rj54n1->height = output_h;
rj54n1->resize = ret;
rj54n1->rect.width = input_w;
rj54n1->rect.height = input_h;
return 0;
}
static int rj54n1_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
a->c = rj54n1->rect;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
return 0;
}
static int rj54n1_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
{
a->bounds.left = RJ54N1_COLUMN_SKIP;
a->bounds.top = RJ54N1_ROW_SKIP;
a->bounds.width = RJ54N1_MAX_WIDTH;
a->bounds.height = RJ54N1_MAX_HEIGHT;
a->defrect = a->bounds;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
a->pixelaspect.numerator = 1;
a->pixelaspect.denominator = 1;
return 0;
}
static int rj54n1_g_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
mf->code = rj54n1->fmt->code;
mf->colorspace = rj54n1->fmt->colorspace;
mf->field = V4L2_FIELD_NONE;
mf->width = rj54n1->width;
mf->height = rj54n1->height;
return 0;
}
/*
* The actual geometry configuration routine. It scales the input window into
* the output one, updates the window sizes and returns an error or the resize
* coefficient on success. Note: we only use the "Fixed Scaling" on this camera.
*/
static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
s32 *out_w, s32 *out_h)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
unsigned int skip, resize, input_w = *in_w, input_h = *in_h,
output_w = *out_w, output_h = *out_h;
u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom;
unsigned int peak, peak_50, peak_60;
int ret;
/*
* We have a problem with crops, where the window is larger than 512x384
* and output window is larger than a half of the input one. In this
* case we have to either reduce the input window to equal or below
* 512x384 or the output window to equal or below 1/2 of the input.
*/
if (output_w > max(512U, input_w / 2)) {
if (2 * output_w > RJ54N1_MAX_WIDTH) {
input_w = RJ54N1_MAX_WIDTH;
output_w = RJ54N1_MAX_WIDTH / 2;
} else {
input_w = output_w * 2;
}
dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n",
input_w, output_w);
}
if (output_h > max(384U, input_h / 2)) {
if (2 * output_h > RJ54N1_MAX_HEIGHT) {
input_h = RJ54N1_MAX_HEIGHT;
output_h = RJ54N1_MAX_HEIGHT / 2;
} else {
input_h = output_h * 2;
}
dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n",
input_h, output_h);
}
/* Idea: use the read mode for snapshots, handle separate geometries */
ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L,
RJ54N1_Y_OUTPUT_SIZE_S_L,
RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h);
if (!ret)
ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L,
RJ54N1_Y_OUTPUT_SIZE_P_L,
RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h);
if (ret < 0)
return ret;
if (output_w > input_w && output_h > input_h) {
input_w = output_w;
input_h = output_h;
resize = 1024;
} else {
unsigned int resize_x, resize_y;
resize_x = (input_w * 1024 + output_w / 2) / output_w;
resize_y = (input_h * 1024 + output_h / 2) / output_h;
/* We want max(resize_x, resize_y), check if it still fits */
if (resize_x > resize_y &&
(output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT)
resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) /
output_h;
else if (resize_y > resize_x &&
(output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH)
resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) /
output_w;
else
resize = max(resize_x, resize_y);
/* Prohibited value ranges */
switch (resize) {
case 2040 ... 2047:
resize = 2039;
break;
case 4080 ... 4095:
resize = 4079;
break;
case 8160 ... 8191:
resize = 8159;
break;
case 16320 ... 16384:
resize = 16319;
}
}
/* Set scaling */
ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff);
if (!ret)
ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8);
if (ret < 0)
return ret;
/*
* Configure a skipping bitmask. The sensor will select a skipping value
* among set bits automatically. This is very unclear in the datasheet
* too. I was told, in this register one enables all skipping values,
* that are required for a specific resize, and the camera selects
* automatically, which ones to use. But it is unclear how to identify,
* which cropping values are needed. Secondly, why don't we just set all
* bits and let the camera choose? Would it increase processing time and
* reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to
* improve the image quality or stability for larger frames (see comment
* above), but I didn't check the framerate.
*/
skip = min(resize / 1024, 15U);
inc_sel = 1 << skip;
if (inc_sel <= 2)
inc_sel = 0xc;
else if (resize & 1023 && skip < 15)
inc_sel |= 1 << (skip + 1);
ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc);
if (!ret)
ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8);
if (!rj54n1->auto_wb) {
/* Auto white balance window */
wb_left = output_w / 16;
wb_right = (3 * output_w / 4 - 3) / 4;
wb_top = output_h / 16;
wb_bottom = (3 * output_h / 4 - 3) / 4;
wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) |
((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1);
if (!ret)
ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8);
if (!ret)
ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left);
if (!ret)
ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top);
if (!ret)
ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right);
if (!ret)
ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom);
}
/* Antiflicker */
peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz /
10000;
peak_50 = peak / 6;
peak_60 = peak / 5;
if (!ret)
ret = reg_write(client, RJ54N1_PEAK_H,
((peak_50 >> 4) & 0xf0) | (peak_60 >> 8));
if (!ret)
ret = reg_write(client, RJ54N1_PEAK_50, peak_50);
if (!ret)
ret = reg_write(client, RJ54N1_PEAK_60, peak_60);
if (!ret)
ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150);
/* Start resizing */
if (!ret)
ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
RESIZE_HOLD_SEL | RESIZE_GO | 1);
if (ret < 0)
return ret;
/* Constant taken from manufacturer's example */
msleep(230);
ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1);
if (ret < 0)
return ret;
*in_w = (output_w * resize + 512) / 1024;
*in_h = (output_h * resize + 512) / 1024;
*out_w = output_w;
*out_h = output_h;
dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n",
*in_w, *in_h, resize, output_w, output_h, skip);
return resize;
}
static int rj54n1_set_clock(struct i2c_client *client)
{
struct rj54n1 *rj54n1 = to_rj54n1(client);
int ret;
/* Enable external clock */
ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY);
/* Leave stand-by. Note: use this when implementing suspend / resume */
if (!ret)
ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK);
if (!ret)
ret = reg_write(client, RJ54N1_PLL_L, PLL_L);
if (!ret)
ret = reg_write(client, RJ54N1_PLL_N, PLL_N);
/* TGCLK dividers */
if (!ret)
ret = reg_write(client, RJ54N1_RATIO_TG,
rj54n1->clk_div.ratio_tg);
if (!ret)
ret = reg_write(client, RJ54N1_RATIO_T,
rj54n1->clk_div.ratio_t);
if (!ret)
ret = reg_write(client, RJ54N1_RATIO_R,
rj54n1->clk_div.ratio_r);
/* Enable TGCLK & RAMP */
if (!ret)
ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3);
/* Disable clock output */
if (!ret)
ret = reg_write(client, RJ54N1_OCLK_DSP, 0);
/* Set divisors */
if (!ret)
ret = reg_write(client, RJ54N1_RATIO_OP,
rj54n1->clk_div.ratio_op);
if (!ret)
ret = reg_write(client, RJ54N1_RATIO_O,
rj54n1->clk_div.ratio_o);
/* Enable OCLK */
if (!ret)
ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
/* Use PLL for Timing Generator, write 2 to reserved bits */
if (!ret)
ret = reg_write(client, RJ54N1_TG_BYPASS, 2);
/* Take sensor out of reset */
if (!ret)
ret = reg_write(client, RJ54N1_RESET_STANDBY,
E_EXCLK | SEN_RSTX);
/* Enable PLL */
if (!ret)
ret = reg_write(client, RJ54N1_PLL_EN, 1);
/* Wait for PLL to stabilise */
msleep(10);
/* Enable clock to frequency divider */
if (!ret)
ret = reg_write(client, RJ54N1_CLK_RST, 1);
if (!ret)
ret = reg_read(client, RJ54N1_CLK_RST);
if (ret != 1) {
dev_err(&client->dev,
"Resetting RJ54N1CB0C clock failed: %d!\n", ret);
return -EIO;
}
/* Start the PLL */
ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1);
/* Enable OCLK */
if (!ret)
ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
return ret;
}
static int rj54n1_reg_init(struct i2c_client *client)
{
struct rj54n1 *rj54n1 = to_rj54n1(client);
int ret = rj54n1_set_clock(client);
if (!ret)
ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7));
if (!ret)
ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10));
/* Set binning divisors */
if (!ret)
ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4));
if (!ret)
ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf);
/* Switch to fixed resize mode */
if (!ret)
ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
RESIZE_HOLD_SEL | 1);
/* Set gain */
if (!ret)
ret = reg_write(client, RJ54N1_Y_GAIN, 0x84);
/*
* Mirror the image back: default is upside down and left-to-right...
* Set manual preview / still shot switching
*/
if (!ret)
ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27);
if (!ret)
ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4));
/* Auto exposure area */
if (!ret)
ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80);
/* Check current auto WB config */
if (!ret)
ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I);
if (ret >= 0) {
rj54n1->auto_wb = ret & 0x80;
ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5));
}
if (!ret)
ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8));
if (!ret)
ret = reg_write(client, RJ54N1_RESET_STANDBY,
E_EXCLK | DSP_RSTX | SEN_RSTX);
/* Commit init */
if (!ret)
ret = rj54n1_commit(client);
/* Take DSP, TG, sensor out of reset */
if (!ret)
ret = reg_write(client, RJ54N1_RESET_STANDBY,
E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX);
/* Start register update? Same register as 0x?FE in many bank_* sets */
if (!ret)
ret = reg_write(client, RJ54N1_FWFLG, 2);
/* Constant taken from manufacturer's example */
msleep(700);
return ret;
}
static int rj54n1_try_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
const struct rj54n1_datafmt *fmt;
int align = mf->code == V4L2_MBUS_FMT_SBGGR10_1X10 ||
mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE ||
mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE ||
mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE ||
mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE;
dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
__func__, mf->code, mf->width, mf->height);
fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
ARRAY_SIZE(rj54n1_colour_fmts));
if (!fmt) {
fmt = rj54n1->fmt;
mf->code = fmt->code;
}
mf->field = V4L2_FIELD_NONE;
mf->colorspace = fmt->colorspace;
v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align,
&mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0);
return 0;
}
static int rj54n1_s_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
const struct rj54n1_datafmt *fmt;
int output_w, output_h, max_w, max_h,
input_w = rj54n1->rect.width, input_h = rj54n1->rect.height;
int ret;
/*
* The host driver can call us without .try_fmt(), so, we have to take
* care ourseleves
*/
rj54n1_try_fmt(sd, mf);
/*
* Verify if the sensor has just been powered on. TODO: replace this
* with proper PM, when a suitable API is available.
*/
ret = reg_read(client, RJ54N1_RESET_STANDBY);
if (ret < 0)
return ret;
if (!(ret & E_EXCLK)) {
ret = rj54n1_reg_init(client);
if (ret < 0)
return ret;
}
dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
__func__, mf->code, mf->width, mf->height);
/* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */
switch (mf->code) {
case V4L2_MBUS_FMT_YUYV8_2X8_LE:
ret = reg_write(client, RJ54N1_OUT_SEL, 0);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
break;
case V4L2_MBUS_FMT_YVYU8_2X8_LE:
ret = reg_write(client, RJ54N1_OUT_SEL, 0);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
break;
case V4L2_MBUS_FMT_RGB565_2X8_LE:
ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
break;
case V4L2_MBUS_FMT_RGB565_2X8_BE:
ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
break;
case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE:
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
if (!ret)
ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
break;
case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
if (!ret)
ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
break;
case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE:
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
if (!ret)
ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
break;
case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE:
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
if (!ret)
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
if (!ret)
ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
break;
case V4L2_MBUS_FMT_SBGGR10_1X10:
ret = reg_write(client, RJ54N1_OUT_SEL, 5);
break;
default:
ret = -EINVAL;
}
/* Special case: a raw mode with 10 bits of data per clock tick */
if (!ret)
ret = reg_set(client, RJ54N1_OCLK_SEL_EN,
(mf->code == V4L2_MBUS_FMT_SBGGR10_1X10) << 1, 2);
if (ret < 0)
return ret;
/* Supported scales 1:1 >= scale > 1:16 */
max_w = mf->width * (16 * 1024 - 1) / 1024;
if (input_w > max_w)
input_w = max_w;
max_h = mf->height * (16 * 1024 - 1) / 1024;
if (input_h > max_h)
input_h = max_h;
output_w = mf->width;
output_h = mf->height;
ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
if (ret < 0)
return ret;
fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
ARRAY_SIZE(rj54n1_colour_fmts));
rj54n1->fmt = fmt;
rj54n1->resize = ret;
rj54n1->rect.width = input_w;
rj54n1->rect.height = input_h;
rj54n1->width = output_w;
rj54n1->height = output_h;
mf->width = output_w;
mf->height = output_h;
mf->field = V4L2_FIELD_NONE;
mf->colorspace = fmt->colorspace;
return 0;
}
static int rj54n1_g_chip_ident(struct v4l2_subdev *sd,
struct v4l2_dbg_chip_ident *id)
{
struct i2c_client *client = sd->priv;
if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
return -EINVAL;
if (id->match.addr != client->addr)
return -ENODEV;
id->ident = V4L2_IDENT_RJ54N1CB0C;
id->revision = 0;
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int rj54n1_g_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct i2c_client *client = sd->priv;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
reg->reg < 0x400 || reg->reg > 0x1fff)
/* Registers > 0x0800 are only available from Sharp support */
return -EINVAL;
if (reg->match.addr != client->addr)
return -ENODEV;
reg->size = 1;
reg->val = reg_read(client, reg->reg);
if (reg->val > 0xff)
return -EIO;
return 0;
}
static int rj54n1_s_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct i2c_client *client = sd->priv;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
reg->reg < 0x400 || reg->reg > 0x1fff)
/* Registers >= 0x0800 are only available from Sharp support */
return -EINVAL;
if (reg->match.addr != client->addr)
return -ENODEV;
if (reg_write(client, reg->reg, reg->val) < 0)
return -EIO;
return 0;
}
#endif
static const struct v4l2_queryctrl rj54n1_controls[] = {
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Flip Vertically",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
}, {
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Flip Horizontally",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
}, {
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
.maximum = 127,
.step = 1,
.default_value = 66,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.id = V4L2_CID_AUTO_WHITE_BALANCE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto white balance",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1,
},
};
static struct soc_camera_ops rj54n1_ops = {
.set_bus_param = rj54n1_set_bus_param,
.query_bus_param = rj54n1_query_bus_param,
.controls = rj54n1_controls,
.num_controls = ARRAY_SIZE(rj54n1_controls),
};
static int rj54n1_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
int data;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
data = reg_read(client, RJ54N1_MIRROR_STILL_MODE);
if (data < 0)
return -EIO;
ctrl->value = !(data & 1);
break;
case V4L2_CID_HFLIP:
data = reg_read(client, RJ54N1_MIRROR_STILL_MODE);
if (data < 0)
return -EIO;
ctrl->value = !(data & 2);
break;
case V4L2_CID_GAIN:
data = reg_read(client, RJ54N1_Y_GAIN);
if (data < 0)
return -EIO;
ctrl->value = data / 2;
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
ctrl->value = rj54n1->auto_wb;
break;
}
return 0;
}
static int rj54n1_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
int data;
struct i2c_client *client = sd->priv;
struct rj54n1 *rj54n1 = to_rj54n1(client);
const struct v4l2_queryctrl *qctrl;
qctrl = soc_camera_find_qctrl(&rj54n1_ops, ctrl->id);
if (!qctrl)
return -EINVAL;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
if (ctrl->value)
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1);
else
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1);
if (data < 0)
return -EIO;
break;
case V4L2_CID_HFLIP:
if (ctrl->value)
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2);
else
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2);
if (data < 0)
return -EIO;
break;
case V4L2_CID_GAIN:
if (ctrl->value > qctrl->maximum ||
ctrl->value < qctrl->minimum)
return -EINVAL;
else if (reg_write(client, RJ54N1_Y_GAIN, ctrl->value * 2) < 0)
return -EIO;
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
/* Auto WB area - whole image */
if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->value << 7,
0x80) < 0)
return -EIO;
rj54n1->auto_wb = ctrl->value;
break;
}
return 0;
}
static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {
.g_ctrl = rj54n1_g_ctrl,
.s_ctrl = rj54n1_s_ctrl,
.g_chip_ident = rj54n1_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = rj54n1_g_register,
.s_register = rj54n1_s_register,
#endif
};
static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = {
.s_stream = rj54n1_s_stream,
.s_mbus_fmt = rj54n1_s_fmt,
.g_mbus_fmt = rj54n1_g_fmt,
.try_mbus_fmt = rj54n1_try_fmt,
.enum_mbus_fmt = rj54n1_enum_fmt,
.g_crop = rj54n1_g_crop,
.s_crop = rj54n1_s_crop,
.cropcap = rj54n1_cropcap,
};
static struct v4l2_subdev_ops rj54n1_subdev_ops = {
.core = &rj54n1_subdev_core_ops,
.video = &rj54n1_subdev_video_ops,
};
/*
* Interface active, can use i2c. If it fails, it can indeed mean, that
* this wasn't our capture interface, so, we wait for the right one
*/
static int rj54n1_video_probe(struct soc_camera_device *icd,
struct i2c_client *client,
struct rj54n1_pdata *priv)
{
int data1, data2;
int ret;
/* This could be a BUG_ON() or a WARN_ON(), or remove it completely */
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
return -ENODEV;
/* Read out the chip version register */
data1 = reg_read(client, RJ54N1_DEV_CODE);
data2 = reg_read(client, RJ54N1_DEV_CODE2);
if (data1 != 0x51 || data2 != 0x10) {
ret = -ENODEV;
dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n",
data1, data2);
goto ei2c;
}
/* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */
ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7);
if (ret < 0)
goto ei2c;
dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",
data1, data2);
ei2c:
return ret;
}
static int rj54n1_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct rj54n1 *rj54n1;
struct soc_camera_device *icd = client->dev.platform_data;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct soc_camera_link *icl;
struct rj54n1_pdata *rj54n1_priv;
int ret;
if (!icd) {
dev_err(&client->dev, "RJ54N1CB0C: missing soc-camera data!\n");
return -EINVAL;
}
icl = to_soc_camera_link(icd);
if (!icl || !icl->priv) {
dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n");
return -EINVAL;
}
rj54n1_priv = icl->priv;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_warn(&adapter->dev,
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
return -EIO;
}
rj54n1 = kzalloc(sizeof(struct rj54n1), GFP_KERNEL);
if (!rj54n1)
return -ENOMEM;
v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops);
icd->ops = &rj54n1_ops;
rj54n1->clk_div = clk_div;
rj54n1->rect.left = RJ54N1_COLUMN_SKIP;
rj54n1->rect.top = RJ54N1_ROW_SKIP;
rj54n1->rect.width = RJ54N1_MAX_WIDTH;
rj54n1->rect.height = RJ54N1_MAX_HEIGHT;
rj54n1->width = RJ54N1_MAX_WIDTH;
rj54n1->height = RJ54N1_MAX_HEIGHT;
rj54n1->fmt = &rj54n1_colour_fmts[0];
rj54n1->resize = 1024;
rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
(clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
ret = rj54n1_video_probe(icd, client, rj54n1_priv);
if (ret < 0) {
icd->ops = NULL;
kfree(rj54n1);
return ret;
}
return ret;
}
static int rj54n1_remove(struct i2c_client *client)
{
struct rj54n1 *rj54n1 = to_rj54n1(client);
struct soc_camera_device *icd = client->dev.platform_data;
struct soc_camera_link *icl = to_soc_camera_link(icd);
icd->ops = NULL;
if (icl->free_bus)
icl->free_bus(icl);
client->driver = NULL;
kfree(rj54n1);
return 0;
}
static const struct i2c_device_id rj54n1_id[] = {
{ "rj54n1cb0c", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, rj54n1_id);
static struct i2c_driver rj54n1_i2c_driver = {
.driver = {
.name = "rj54n1cb0c",
},
.probe = rj54n1_probe,
.remove = rj54n1_remove,
.id_table = rj54n1_id,
};
static int __init rj54n1_mod_init(void)
{
return i2c_add_driver(&rj54n1_i2c_driver);
}
static void __exit rj54n1_mod_exit(void)
{
i2c_del_driver(&rj54n1_i2c_driver);
}
module_init(rj54n1_mod_init);
module_exit(rj54n1_mod_exit);
MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_LICENSE("GPL v2");
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