--- /dev/null
+/*
+ * Driver for Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor
+ * with embedded SoC ISP.
+ *
+ * Copyright (C) 2011, Samsung Electronics Co., Ltd.
+ * Sylwester Nawrocki <s.nawrocki@samsung.com>
+ *
+ * Based on a driver authored by Dongsoo Nathaniel Kim.
+ * Copyright (C) 2009, Dongsoo Nathaniel Kim <dongsoo45.kim@samsung.com>
+ *
+ * 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/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/media.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.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/s5k6aa.h>
+
+static int debug;
+module_param(debug, int, 0644);
+
+#define DRIVER_NAME "S5K6AA"
+
+/* The token to indicate array termination */
+#define S5K6AA_TERM 0xffff
+#define S5K6AA_OUT_WIDTH_DEF 640
+#define S5K6AA_OUT_HEIGHT_DEF 480
+#define S5K6AA_WIN_WIDTH_MAX 1280
+#define S5K6AA_WIN_HEIGHT_MAX 1024
+#define S5K6AA_WIN_WIDTH_MIN 8
+#define S5K6AA_WIN_HEIGHT_MIN 8
+
+/*
+ * H/W register Interface (0xD0000000 - 0xD0000FFF)
+ */
+#define AHB_MSB_ADDR_PTR 0xfcfc
+#define GEN_REG_OFFSH 0xd000
+#define REG_CMDWR_ADDRH 0x0028
+#define REG_CMDWR_ADDRL 0x002a
+#define REG_CMDRD_ADDRH 0x002c
+#define REG_CMDRD_ADDRL 0x002e
+#define REG_CMDBUF0_ADDR 0x0f12
+#define REG_CMDBUF1_ADDR 0x0f10
+
+/*
+ * Host S/W Register interface (0x70000000 - 0x70002000)
+ * The value of the two most significant address bytes is 0x7000,
+ * (HOST_SWIF_OFFS_H). The register addresses below specify 2 LSBs.
+ */
+#define HOST_SWIF_OFFSH 0x7000
+
+/* Initialization parameters */
+/* Master clock frequency in KHz */
+#define REG_I_INCLK_FREQ_L 0x01b8
+#define REG_I_INCLK_FREQ_H 0x01ba
+#define MIN_MCLK_FREQ_KHZ 6000U
+#define MAX_MCLK_FREQ_KHZ 27000U
+#define REG_I_USE_NPVI_CLOCKS 0x01c6
+#define REG_I_USE_NMIPI_CLOCKS 0x01c8
+
+/* Clock configurations, n = 0..2. REG_I_* frequency unit is 4 kHz. */
+#define REG_I_OPCLK_4KHZ(n) ((n) * 6 + 0x01cc)
+#define REG_I_MIN_OUTRATE_4KHZ(n) ((n) * 6 + 0x01ce)
+#define REG_I_MAX_OUTRATE_4KHZ(n) ((n) * 6 + 0x01d0)
+#define SYS_PLL_OUT_FREQ (48000000 / 4000)
+#define PCLK_FREQ_MIN (24000000 / 4000)
+#define PCLK_FREQ_MAX (48000000 / 4000)
+#define REG_I_INIT_PARAMS_UPDATED 0x01e0
+#define REG_I_ERROR_INFO 0x01e2
+
+/* General purpose parameters */
+#define REG_USER_BRIGHTNESS 0x01e4
+#define REG_USER_CONTRAST 0x01e6
+#define REG_USER_SATURATION 0x01e8
+#define REG_USER_SHARPBLUR 0x01ea
+
+#define REG_G_SPEC_EFFECTS 0x01ee
+#define REG_G_ENABLE_PREV 0x01f0
+#define REG_G_ENABLE_PREV_CHG 0x01f2
+#define REG_G_NEW_CFG_SYNC 0x01f8
+#define REG_G_PREVZOOM_IN_WIDTH 0x020a
+#define REG_G_PREVZOOM_IN_HEIGHT 0x020c
+#define REG_G_PREVZOOM_IN_XOFFS 0x020e
+#define REG_G_PREVZOOM_IN_YOFFS 0x0210
+#define REG_G_INPUTS_CHANGE_REQ 0x021a
+#define REG_G_ACTIVE_PREV_CFG 0x021c
+#define REG_G_PREV_CFG_CHG 0x021e
+#define REG_G_PREV_OPEN_AFTER_CH 0x0220
+#define REG_G_PREV_CFG_ERROR 0x0222
+
+/* Preview control section. n = 0...4. */
+#define PREG(n, x) ((n) * 0x26 + x)
+#define REG_P_OUT_WIDTH(n) PREG(n, 0x0242)
+#define REG_P_OUT_HEIGHT(n) PREG(n, 0x0244)
+#define REG_P_FMT(n) PREG(n, 0x0246)
+#define REG_P_MAX_OUT_RATE(n) PREG(n, 0x0248)
+#define REG_P_MIN_OUT_RATE(n) PREG(n, 0x024a)
+#define REG_P_PVI_MASK(n) PREG(n, 0x024c)
+#define REG_P_CLK_INDEX(n) PREG(n, 0x024e)
+#define REG_P_FR_RATE_TYPE(n) PREG(n, 0x0250)
+#define FR_RATE_DYNAMIC 0
+#define FR_RATE_FIXED 1
+#define FR_RATE_FIXED_ACCURATE 2
+#define REG_P_FR_RATE_Q_TYPE(n) PREG(n, 0x0252)
+#define FR_RATE_Q_BEST_FRRATE 1 /* Binning enabled */
+#define FR_RATE_Q_BEST_QUALITY 2 /* Binning disabled */
+/* Frame period in 0.1 ms units */
+#define REG_P_MAX_FR_TIME(n) PREG(n, 0x0254)
+#define REG_P_MIN_FR_TIME(n) PREG(n, 0x0256)
+/* Conversion to REG_P_[MAX/MIN]_FR_TIME value; __t: time in us */
+#define US_TO_FR_TIME(__t) ((__t) / 100)
+#define S5K6AA_MIN_FR_TIME 33300 /* us */
+#define S5K6AA_MAX_FR_TIME 650000 /* us */
+#define S5K6AA_MAX_HIGHRES_FR_TIME 666 /* x100 us */
+/* The below 5 registers are for "device correction" values */
+#define REG_P_COLORTEMP(n) PREG(n, 0x025e)
+#define REG_P_PREV_MIRROR(n) PREG(n, 0x0262)
+
+/* Extended image property controls */
+/* Exposure time in 10 us units */
+#define REG_SF_USR_EXPOSURE_L 0x03c6
+#define REG_SF_USR_EXPOSURE_H 0x03c8
+#define REG_SF_USR_EXPOSURE_CHG 0x03ca
+#define REG_SF_USR_TOT_GAIN 0x03cc
+#define REG_SF_USR_TOT_GAIN_CHG 0x03ce
+#define REG_SF_RGAIN 0x03d0
+#define REG_SF_RGAIN_CHG 0x03d2
+#define REG_SF_GGAIN 0x03d4
+#define REG_SF_GGAIN_CHG 0x03d6
+#define REG_SF_BGAIN 0x03d8
+#define REG_SF_BGAIN_CHG 0x03da
+#define REG_SF_FLICKER_QUANT 0x03dc
+#define REG_SF_FLICKER_QUANT_CHG 0x03de
+
+/* Output interface (parallel/MIPI) setup */
+#define REG_OIF_EN_MIPI_LANES 0x03fa
+#define REG_OIF_EN_PACKETS 0x03fc
+#define REG_OIF_CFG_CHG 0x03fe
+
+/* Auto-algorithms enable mask */
+#define REG_DBG_AUTOALG_EN 0x0400
+#define AALG_ALL_EN_MASK (1 << 0)
+#define AALG_AE_EN_MASK (1 << 1)
+#define AALG_DIVLEI_EN_MASK (1 << 2)
+#define AALG_WB_EN_MASK (1 << 3)
+#define AALG_FLICKER_EN_MASK (1 << 5)
+#define AALG_FIT_EN_MASK (1 << 6)
+#define AALG_WRHW_EN_MASK (1 << 7)
+
+/* Firmware revision information */
+#define REG_FW_APIVER 0x012e
+#define S5K6AAFX_FW_APIVER 0x0001
+#define REG_FW_REVISION 0x0130
+
+/* For now we use only one user configuration register set */
+#define S5K6AA_MAX_PRESETS 1
+
+static const char * const s5k6aa_supply_names[] = {
+ "vdd_core", /* Digital core supply 1.5V (1.4V to 1.6V) */
+ "vdda", /* Analog power supply 2.8V (2.6V to 3.0V) */
+ "vdd_reg", /* Regulator input power 1.8V (1.7V to 1.9V)
+ or 2.8V (2.6V to 3.0) */
+ "vddio", /* I/O supply 1.8V (1.65V to 1.95V)
+ or 2.8V (2.5V to 3.1V) */
+};
+#define S5K6AA_NUM_SUPPLIES ARRAY_SIZE(s5k6aa_supply_names)
+
+enum s5k6aa_gpio_id {
+ STBY,
+ RST,
+ GPIO_NUM,
+};
+
+struct s5k6aa_regval {
+ u16 addr;
+ u16 val;
+};
+
+struct s5k6aa_pixfmt {
+ enum v4l2_mbus_pixelcode code;
+ u32 colorspace;
+ /* REG_P_FMT(x) register value */
+ u16 reg_p_fmt;
+};
+
+struct s5k6aa_preset {
+ /* output pixel format and resolution */
+ struct v4l2_mbus_framefmt mbus_fmt;
+ u8 clk_id;
+ u8 index;
+};
+
+struct s5k6aa_ctrls {
+ struct v4l2_ctrl_handler handler;
+ /* Auto / manual white balance cluster */
+ struct v4l2_ctrl *awb;
+ struct v4l2_ctrl *gain_red;
+ struct v4l2_ctrl *gain_blue;
+ struct v4l2_ctrl *gain_green;
+ /* Mirror cluster */
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ /* Auto exposure / manual exposure and gain cluster */
+ struct v4l2_ctrl *auto_exp;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *gain;
+};
+
+struct s5k6aa_interval {
+ u16 reg_fr_time;
+ struct v4l2_fract interval;
+ /* Maximum rectangle for the interval */
+ struct v4l2_frmsize_discrete size;
+};
+
+struct s5k6aa {
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+
+ enum v4l2_mbus_type bus_type;
+ u8 mipi_lanes;
+
+ int (*s_power)(int enable);
+ struct regulator_bulk_data supplies[S5K6AA_NUM_SUPPLIES];
+ struct s5k6aa_gpio gpio[GPIO_NUM];
+
+ /* external master clock frequency */
+ unsigned long mclk_frequency;
+ /* ISP internal master clock frequency */
+ u16 clk_fop;
+ /* output pixel clock frequency range */
+ u16 pclk_fmin;
+ u16 pclk_fmax;
+
+ unsigned int inv_hflip:1;
+ unsigned int inv_vflip:1;
+
+ /* protects the struct members below */
+ struct mutex lock;
+
+ /* sensor matrix scan window */
+ struct v4l2_rect ccd_rect;
+
+ struct s5k6aa_ctrls ctrls;
+ struct s5k6aa_preset presets[S5K6AA_MAX_PRESETS];
+ struct s5k6aa_preset *preset;
+ const struct s5k6aa_interval *fiv;
+
+ unsigned int streaming:1;
+ unsigned int apply_cfg:1;
+ unsigned int apply_crop:1;
+ unsigned int power;
+};
+
+static struct s5k6aa_regval s5k6aa_analog_config[] = {
+ /* Analog settings */
+ { 0x112a, 0x0000 }, { 0x1132, 0x0000 },
+ { 0x113e, 0x0000 }, { 0x115c, 0x0000 },
+ { 0x1164, 0x0000 }, { 0x1174, 0x0000 },
+ { 0x1178, 0x0000 }, { 0x077a, 0x0000 },
+ { 0x077c, 0x0000 }, { 0x077e, 0x0000 },
+ { 0x0780, 0x0000 }, { 0x0782, 0x0000 },
+ { 0x0784, 0x0000 }, { 0x0786, 0x0000 },
+ { 0x0788, 0x0000 }, { 0x07a2, 0x0000 },
+ { 0x07a4, 0x0000 }, { 0x07a6, 0x0000 },
+ { 0x07a8, 0x0000 }, { 0x07b6, 0x0000 },
+ { 0x07b8, 0x0002 }, { 0x07ba, 0x0004 },
+ { 0x07bc, 0x0004 }, { 0x07be, 0x0005 },
+ { 0x07c0, 0x0005 }, { S5K6AA_TERM, 0 },
+};
+
+/* TODO: Add RGB888 and Bayer format */
+static const struct s5k6aa_pixfmt s5k6aa_formats[] = {
+ { V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 5 },
+ /* range 16-240 */
+ { V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_REC709, 6 },
+ { V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_JPEG, 0 },
+};
+
+static const struct s5k6aa_interval s5k6aa_intervals[] = {
+ { 1000, {10000, 1000000}, {1280, 1024} }, /* 10 fps */
+ { 666, {15000, 1000000}, {1280, 1024} }, /* 15 fps */
+ { 500, {20000, 1000000}, {1280, 720} }, /* 20 fps */
+ { 400, {25000, 1000000}, {640, 480} }, /* 25 fps */
+ { 333, {33300, 1000000}, {640, 480} }, /* 30 fps */
+};
+
+#define S5K6AA_INTERVAL_DEF_INDEX 1 /* 15 fps */
+
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct s5k6aa, ctrls.handler)->sd;
+}
+
+static inline struct s5k6aa *to_s5k6aa(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct s5k6aa, sd);
+}
+
+/* Set initial values for all preview presets */
+static void s5k6aa_presets_data_init(struct s5k6aa *s5k6aa)
+{
+ struct s5k6aa_preset *preset = &s5k6aa->presets[0];
+ int i;
+
+ for (i = 0; i < S5K6AA_MAX_PRESETS; i++) {
+ preset->mbus_fmt.width = S5K6AA_OUT_WIDTH_DEF;
+ preset->mbus_fmt.height = S5K6AA_OUT_HEIGHT_DEF;
+ preset->mbus_fmt.code = s5k6aa_formats[0].code;
+ preset->index = i;
+ preset->clk_id = 0;
+ preset++;
+ }
+
+ s5k6aa->fiv = &s5k6aa_intervals[S5K6AA_INTERVAL_DEF_INDEX];
+ s5k6aa->preset = &s5k6aa->presets[0];
+}
+
+static int s5k6aa_i2c_read(struct i2c_client *client, u16 addr, u16 *val)
+{
+ u8 wbuf[2] = {addr >> 8, addr & 0xFF};
+ struct i2c_msg msg[2];
+ u8 rbuf[2];
+ int ret;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 2;
+ msg[0].buf = wbuf;
+
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = 2;
+ msg[1].buf = rbuf;
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+ *val = be16_to_cpu(*((u16 *)rbuf));
+
+ v4l2_dbg(3, debug, client, "i2c_read: 0x%04X : 0x%04x\n", addr, *val);
+
+ return ret == 2 ? 0 : ret;
+}
+
+static int s5k6aa_i2c_write(struct i2c_client *client, u16 addr, u16 val)
+{
+ u8 buf[4] = {addr >> 8, addr & 0xFF, val >> 8, val & 0xFF};
+
+ int ret = i2c_master_send(client, buf, 4);
+ v4l2_dbg(3, debug, client, "i2c_write: 0x%04X : 0x%04x\n", addr, val);
+
+ return ret == 4 ? 0 : ret;
+}
+
+/* The command register write, assumes Command_Wr_addH = 0x7000. */
+static int s5k6aa_write(struct i2c_client *c, u16 addr, u16 val)
+{
+ int ret = s5k6aa_i2c_write(c, REG_CMDWR_ADDRL, addr);
+ if (ret)
+ return ret;
+ return s5k6aa_i2c_write(c, REG_CMDBUF0_ADDR, val);
+}
+
+/* The command register read, assumes Command_Rd_addH = 0x7000. */
+static int s5k6aa_read(struct i2c_client *client, u16 addr, u16 *val)
+{
+ int ret = s5k6aa_i2c_write(client, REG_CMDRD_ADDRL, addr);
+ if (ret)
+ return ret;
+ return s5k6aa_i2c_read(client, REG_CMDBUF0_ADDR, val);
+}
+
+static int s5k6aa_write_array(struct v4l2_subdev *sd,
+ const struct s5k6aa_regval *msg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u16 addr_incr = 0;
+ int ret = 0;
+
+ while (msg->addr != S5K6AA_TERM) {
+ if (addr_incr != 2)
+ ret = s5k6aa_i2c_write(client, REG_CMDWR_ADDRL,
+ msg->addr);
+ if (ret)
+ break;
+ ret = s5k6aa_i2c_write(client, REG_CMDBUF0_ADDR, msg->val);
+ if (ret)
+ break;
+ /* Assume that msg->addr is always less than 0xfffc */
+ addr_incr = (msg + 1)->addr - msg->addr;
+ msg++;
+ }
+
+ return ret;
+}
+
+/* Configure the AHB high address bytes for GTG registers access */
+static int s5k6aa_set_ahb_address(struct i2c_client *client)
+{
+ int ret = s5k6aa_i2c_write(client, AHB_MSB_ADDR_PTR, GEN_REG_OFFSH);
+ if (ret)
+ return ret;
+ ret = s5k6aa_i2c_write(client, REG_CMDRD_ADDRH, HOST_SWIF_OFFSH);
+ if (ret)
+ return ret;
+ return s5k6aa_i2c_write(client, REG_CMDWR_ADDRH, HOST_SWIF_OFFSH);
+}
+
+/**
+ * s5k6aa_configure_pixel_clock - apply ISP main clock/PLL configuration
+ *
+ * Configure the internal ISP PLL for the required output frequency.
+ * Locking: called with s5k6aa.lock mutex held.
+ */
+static int s5k6aa_configure_pixel_clocks(struct s5k6aa *s5k6aa)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
+ unsigned long fmclk = s5k6aa->mclk_frequency / 1000;
+ u16 status;
+ int ret;
+
+ if (WARN(fmclk < MIN_MCLK_FREQ_KHZ || fmclk > MAX_MCLK_FREQ_KHZ,
+ "Invalid clock frequency: %ld\n", fmclk))
+ return -EINVAL;
+
+ s5k6aa->pclk_fmin = PCLK_FREQ_MIN;
+ s5k6aa->pclk_fmax = PCLK_FREQ_MAX;
+ s5k6aa->clk_fop = SYS_PLL_OUT_FREQ;
+
+ /* External input clock frequency in kHz */
+ ret = s5k6aa_write(c, REG_I_INCLK_FREQ_H, fmclk >> 16);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_I_INCLK_FREQ_L, fmclk & 0xFFFF);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_I_USE_NPVI_CLOCKS, 1);
+ /* Internal PLL frequency */
+ if (!ret)
+ ret = s5k6aa_write(c, REG_I_OPCLK_4KHZ(0), s5k6aa->clk_fop);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_I_MIN_OUTRATE_4KHZ(0),
+ s5k6aa->pclk_fmin);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_I_MAX_OUTRATE_4KHZ(0),
+ s5k6aa->pclk_fmax);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_I_INIT_PARAMS_UPDATED, 1);
+ if (!ret)
+ ret = s5k6aa_read(c, REG_I_ERROR_INFO, &status);
+
+ return ret ? ret : (status ? -EINVAL : 0);
+}
+
+/* Set horizontal and vertical image flipping */
+static int s5k6aa_set_mirror(struct s5k6aa *s5k6aa, int horiz_flip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ int index = s5k6aa->preset->index;
+
+ unsigned int vflip = s5k6aa->ctrls.vflip->val ^ s5k6aa->inv_vflip;
+ unsigned int flip = (horiz_flip ^ s5k6aa->inv_hflip) | (vflip << 1);
+
+ return s5k6aa_write(client, REG_P_PREV_MIRROR(index), flip);
+}
+
+/* Configure auto/manual white balance and R/G/B gains */
+static int s5k6aa_set_awb(struct s5k6aa *s5k6aa, int awb)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
+ struct s5k6aa_ctrls *ctrls = &s5k6aa->ctrls;
+ u16 reg;
+
+ int ret = s5k6aa_read(c, REG_DBG_AUTOALG_EN, ®);
+
+ if (!ret && !awb) {
+ ret = s5k6aa_write(c, REG_SF_RGAIN, ctrls->gain_red->val);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_SF_RGAIN_CHG, 1);
+ if (ret)
+ return ret;
+
+ ret = s5k6aa_write(c, REG_SF_GGAIN, ctrls->gain_green->val);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_SF_GGAIN_CHG, 1);
+ if (ret)
+ return ret;
+
+ ret = s5k6aa_write(c, REG_SF_BGAIN, ctrls->gain_blue->val);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_SF_BGAIN_CHG, 1);
+ }
+ if (!ret) {
+ reg = awb ? reg | AALG_WB_EN_MASK : reg & ~AALG_WB_EN_MASK;
+ ret = s5k6aa_write(c, REG_DBG_AUTOALG_EN, reg);
+ }
+
+ return ret;
+}
+
+/* Program FW with exposure time, 'exposure' in us units */
+static int s5k6aa_set_user_exposure(struct i2c_client *client, int exposure)
+{
+ unsigned int time = exposure / 10;
+
+ int ret = s5k6aa_write(client, REG_SF_USR_EXPOSURE_L, time & 0xffff);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_SF_USR_EXPOSURE_H, time >> 16);
+ if (ret)
+ return ret;
+ return s5k6aa_write(client, REG_SF_USR_EXPOSURE_CHG, 1);
+}
+
+static int s5k6aa_set_user_gain(struct i2c_client *client, int gain)
+{
+ int ret = s5k6aa_write(client, REG_SF_USR_TOT_GAIN, gain);
+ if (ret)
+ return ret;
+ return s5k6aa_write(client, REG_SF_USR_TOT_GAIN_CHG, 1);
+}
+
+/* Set auto/manual exposure and total gain */
+static int s5k6aa_set_auto_exposure(struct s5k6aa *s5k6aa, int value)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
+ unsigned int exp_time = s5k6aa->ctrls.exposure->val;
+ u16 auto_alg;
+
+ int ret = s5k6aa_read(c, REG_DBG_AUTOALG_EN, &auto_alg);
+ if (ret)
+ return ret;
+
+ v4l2_dbg(1, debug, c, "man_exp: %d, auto_exp: %d, a_alg: 0x%x\n",
+ exp_time, value, auto_alg);
+
+ if (value == V4L2_EXPOSURE_AUTO) {
+ auto_alg |= AALG_AE_EN_MASK | AALG_DIVLEI_EN_MASK;
+ } else {
+ ret = s5k6aa_set_user_exposure(c, exp_time);
+ if (ret)
+ return ret;
+ ret = s5k6aa_set_user_gain(c, s5k6aa->ctrls.gain->val);
+ if (ret)
+ return ret;
+ auto_alg &= ~(AALG_AE_EN_MASK | AALG_DIVLEI_EN_MASK);
+ }
+
+ return s5k6aa_write(c, REG_DBG_AUTOALG_EN, auto_alg);
+}
+
+static int s5k6aa_set_anti_flicker(struct s5k6aa *s5k6aa, int value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ u16 auto_alg;
+ int ret;
+
+ ret = s5k6aa_read(client, REG_DBG_AUTOALG_EN, &auto_alg);
+ if (ret)
+ return ret;
+
+ if (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) {
+ auto_alg |= AALG_FLICKER_EN_MASK;
+ } else {
+ auto_alg &= ~AALG_FLICKER_EN_MASK;
+ /* The V4L2_CID_LINE_FREQUENCY control values match
+ * the register values */
+ ret = s5k6aa_write(client, REG_SF_FLICKER_QUANT, value);
+ if (ret)
+ return ret;
+ ret = s5k6aa_write(client, REG_SF_FLICKER_QUANT_CHG, 1);
+ if (ret)
+ return ret;
+ }
+
+ return s5k6aa_write(client, REG_DBG_AUTOALG_EN, auto_alg);
+}
+
+static int s5k6aa_set_colorfx(struct s5k6aa *s5k6aa, int val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ static const struct v4l2_control colorfx[] = {
+ { V4L2_COLORFX_NONE, 0 },
+ { V4L2_COLORFX_BW, 1 },
+ { V4L2_COLORFX_NEGATIVE, 2 },
+ { V4L2_COLORFX_SEPIA, 3 },
+ { V4L2_COLORFX_SKY_BLUE, 4 },
+ { V4L2_COLORFX_SKETCH, 5 },
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(colorfx); i++) {
+ if (colorfx[i].id == val)
+ return s5k6aa_write(client, REG_G_SPEC_EFFECTS,
+ colorfx[i].value);
+ }
+ return -EINVAL;
+}
+
+static int s5k6aa_preview_config_status(struct i2c_client *client)
+{
+ u16 error = 0;
+ int ret = s5k6aa_read(client, REG_G_PREV_CFG_ERROR, &error);
+
+ v4l2_dbg(1, debug, client, "error: 0x%x (%d)\n", error, ret);
+ return ret ? ret : (error ? -EINVAL : 0);
+}
+
+static int s5k6aa_get_pixfmt_index(struct s5k6aa *s5k6aa,
+ struct v4l2_mbus_framefmt *mf)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(s5k6aa_formats); i++)
+ if (mf->colorspace == s5k6aa_formats[i].colorspace &&
+ mf->code == s5k6aa_formats[i].code)
+ return i;
+ return 0;
+}
+
+static int s5k6aa_set_output_framefmt(struct s5k6aa *s5k6aa,
+ struct s5k6aa_preset *preset)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ int fmt_index = s5k6aa_get_pixfmt_index(s5k6aa, &preset->mbus_fmt);
+ int ret;
+
+ ret = s5k6aa_write(client, REG_P_OUT_WIDTH(preset->index),
+ preset->mbus_fmt.width);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_OUT_HEIGHT(preset->index),
+ preset->mbus_fmt.height);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_FMT(preset->index),
+ s5k6aa_formats[fmt_index].reg_p_fmt);
+ return ret;
+}
+
+static int s5k6aa_set_input_params(struct s5k6aa *s5k6aa)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
+ struct v4l2_rect *r = &s5k6aa->ccd_rect;
+ int ret;
+
+ ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_WIDTH, r->width);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_HEIGHT, r->height);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_XOFFS, r->left);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_YOFFS, r->top);
+ if (!ret)
+ ret = s5k6aa_write(c, REG_G_INPUTS_CHANGE_REQ, 1);
+ if (!ret)
+ s5k6aa->apply_crop = 0;
+
+ return ret;
+}
+
+/**
+ * s5k6aa_configure_video_bus - configure the video output interface
+ * @bus_type: video bus type: parallel or MIPI-CSI
+ * @nlanes: number of MIPI lanes to be used (MIPI-CSI only)
+ *
+ * Note: Only parallel bus operation has been tested.
+ */
+static int s5k6aa_configure_video_bus(struct s5k6aa *s5k6aa,
+ enum v4l2_mbus_type bus_type, int nlanes)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ u16 cfg = 0;
+ int ret;
+
+ /*
+ * TODO: The sensor is supposed to support BT.601 and BT.656
+ * but there is nothing indicating how to switch between both
+ * in the datasheet. For now default BT.601 interface is assumed.
+ */
+ if (bus_type == V4L2_MBUS_CSI2)
+ cfg = nlanes;
+ else if (bus_type != V4L2_MBUS_PARALLEL)
+ return -EINVAL;
+
+ ret = s5k6aa_write(client, REG_OIF_EN_MIPI_LANES, cfg);
+ if (ret)
+ return ret;
+ return s5k6aa_write(client, REG_OIF_CFG_CHG, 1);
+}
+
+/* This function should be called when switching to new user configuration set*/
+static int s5k6aa_new_config_sync(struct i2c_client *client, int timeout,
+ int cid)
+{
+ unsigned long end = jiffies + msecs_to_jiffies(timeout);
+ u16 reg = 1;
+ int ret;
+
+ ret = s5k6aa_write(client, REG_G_ACTIVE_PREV_CFG, cid);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_G_NEW_CFG_SYNC, 1);
+ if (timeout == 0)
+ return ret;
+
+ while (ret >= 0 && time_is_after_jiffies(end)) {
+ ret = s5k6aa_read(client, REG_G_NEW_CFG_SYNC, ®);
+ if (!reg)
+ return 0;
+ usleep_range(1000, 5000);
+ }
+ return ret ? ret : -ETIMEDOUT;
+}
+
+/**
+ * s5k6aa_set_prev_config - write user preview register set
+ *
+ * Configure output resolution and color fromat, pixel clock
+ * frequency range, device frame rate type and frame period range.
+ */
+static int s5k6aa_set_prev_config(struct s5k6aa *s5k6aa,
+ struct s5k6aa_preset *preset)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ int idx = preset->index;
+ u16 frame_rate_q;
+ int ret;
+
+ if (s5k6aa->fiv->reg_fr_time >= S5K6AA_MAX_HIGHRES_FR_TIME)
+ frame_rate_q = FR_RATE_Q_BEST_FRRATE;
+ else
+ frame_rate_q = FR_RATE_Q_BEST_QUALITY;
+
+ ret = s5k6aa_set_output_framefmt(s5k6aa, preset);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_MAX_OUT_RATE(idx),
+ s5k6aa->pclk_fmax);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_MIN_OUT_RATE(idx),
+ s5k6aa->pclk_fmin);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_CLK_INDEX(idx),
+ preset->clk_id);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_FR_RATE_TYPE(idx),
+ FR_RATE_DYNAMIC);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_FR_RATE_Q_TYPE(idx),
+ frame_rate_q);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_MAX_FR_TIME(idx),
+ s5k6aa->fiv->reg_fr_time + 33);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_P_MIN_FR_TIME(idx),
+ s5k6aa->fiv->reg_fr_time - 33);
+ if (!ret)
+ ret = s5k6aa_new_config_sync(client, 250, idx);
+ if (!ret)
+ ret = s5k6aa_preview_config_status(client);
+ if (!ret)
+ s5k6aa->apply_cfg = 0;
+
+ v4l2_dbg(1, debug, client, "Frame interval: %d +/- 3.3ms. (%d)\n",
+ s5k6aa->fiv->reg_fr_time, ret);
+ return ret;
+}
+
+/**
+ * s5k6aa_initialize_isp - basic ISP MCU initialization
+ *
+ * Configure AHB addresses for registers read/write; configure PLLs for
+ * required output pixel clock. The ISP power supply needs to be already
+ * enabled, with an optional H/W reset.
+ * Locking: called with s5k6aa.lock mutex held.
+ */
+static int s5k6aa_initialize_isp(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ int ret;
+
+ s5k6aa->apply_crop = 1;
+ s5k6aa->apply_cfg = 1;
+ msleep(100);
+
+ ret = s5k6aa_set_ahb_address(client);
+ if (ret)
+ return ret;
+ ret = s5k6aa_configure_video_bus(s5k6aa, s5k6aa->bus_type,
+ s5k6aa->mipi_lanes);
+ if (ret)
+ return ret;
+ ret = s5k6aa_write_array(sd, s5k6aa_analog_config);
+ if (ret)
+ return ret;
+ msleep(20);
+
+ return s5k6aa_configure_pixel_clocks(s5k6aa);
+}
+
+static int s5k6aa_gpio_set_value(struct s5k6aa *priv, int id, u32 val)
+{
+ if (!gpio_is_valid(priv->gpio[id].gpio))
+ return 0;
+ gpio_set_value(priv->gpio[id].gpio, !!val);
+ return 1;
+}
+
+static int s5k6aa_gpio_assert(struct s5k6aa *priv, int id)
+{
+ return s5k6aa_gpio_set_value(priv, id, priv->gpio[id].level);
+}
+
+static int s5k6aa_gpio_deassert(struct s5k6aa *priv, int id)
+{
+ return s5k6aa_gpio_set_value(priv, id, !priv->gpio[id].level);
+}
+
+static int __s5k6aa_power_on(struct s5k6aa *s5k6aa)
+{
+ int ret;
+
+ ret = regulator_bulk_enable(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
+ if (ret)
+ return ret;
+ if (s5k6aa_gpio_deassert(s5k6aa, STBY))
+ usleep_range(150, 200);
+
+ if (s5k6aa->s_power)
+ ret = s5k6aa->s_power(1);
+ usleep_range(4000, 4000);
+
+ if (s5k6aa_gpio_deassert(s5k6aa, RST))
+ msleep(20);
+
+ return ret;
+}
+
+static int __s5k6aa_power_off(struct s5k6aa *s5k6aa)
+{
+ int ret;
+
+ if (s5k6aa_gpio_assert(s5k6aa, RST))
+ usleep_range(100, 150);
+
+ if (s5k6aa->s_power) {
+ ret = s5k6aa->s_power(0);
+ if (ret)
+ return ret;
+ }
+ if (s5k6aa_gpio_assert(s5k6aa, STBY))
+ usleep_range(50, 100);
+ s5k6aa->streaming = 0;
+
+ return regulator_bulk_disable(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
+}
+
+/*
+ * V4L2 subdev core and video operations
+ */
+static int s5k6aa_set_power(struct v4l2_subdev *sd, int on)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ int ret = 0;
+
+ mutex_lock(&s5k6aa->lock);
+
+ if (!on == s5k6aa->power) {
+ if (on) {
+ ret = __s5k6aa_power_on(s5k6aa);
+ if (!ret)
+ ret = s5k6aa_initialize_isp(sd);
+ } else {
+ ret = __s5k6aa_power_off(s5k6aa);
+ }
+
+ if (!ret)
+ s5k6aa->power += on ? 1 : -1;
+ }
+
+ mutex_unlock(&s5k6aa->lock);
+
+ if (!on || ret || s5k6aa->power != 1)
+ return ret;
+
+ return v4l2_ctrl_handler_setup(sd->ctrl_handler);
+}
+
+static int __s5k6aa_stream(struct s5k6aa *s5k6aa, int enable)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ int ret = 0;
+
+ ret = s5k6aa_write(client, REG_G_ENABLE_PREV, enable);
+ if (!ret)
+ ret = s5k6aa_write(client, REG_G_ENABLE_PREV_CHG, 1);
+ if (!ret)
+ s5k6aa->streaming = enable;
+
+ return ret;
+}
+
+static int s5k6aa_s_stream(struct v4l2_subdev *sd, int on)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ int ret = 0;
+
+ mutex_lock(&s5k6aa->lock);
+
+ if (s5k6aa->streaming == !on) {
+ if (!ret && s5k6aa->apply_cfg)
+ ret = s5k6aa_set_prev_config(s5k6aa, s5k6aa->preset);
+ if (s5k6aa->apply_crop)
+ ret = s5k6aa_set_input_params(s5k6aa);
+ if (!ret)
+ ret = __s5k6aa_stream(s5k6aa, !!on);
+ }
+ mutex_unlock(&s5k6aa->lock);
+
+ return ret;
+}
+
+static int s5k6aa_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+
+ mutex_lock(&s5k6aa->lock);
+ fi->interval = s5k6aa->fiv->interval;
+ mutex_unlock(&s5k6aa->lock);
+
+ return 0;
+}
+
+static int __s5k6aa_set_frame_interval(struct s5k6aa *s5k6aa,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct v4l2_mbus_framefmt *mbus_fmt = &s5k6aa->preset->mbus_fmt;
+ const struct s5k6aa_interval *fiv = &s5k6aa_intervals[0];
+ unsigned int err, min_err = UINT_MAX;
+ unsigned int i, fr_time;
+
+ if (fi->interval.denominator == 0)
+ return -EINVAL;
+
+ fr_time = fi->interval.numerator * 10000 / fi->interval.denominator;
+
+ for (i = 0; i < ARRAY_SIZE(s5k6aa_intervals); i++) {
+ const struct s5k6aa_interval *iv = &s5k6aa_intervals[i];
+
+ if (mbus_fmt->width > iv->size.width ||
+ mbus_fmt->height > iv->size.height)
+ continue;
+
+ err = abs(iv->reg_fr_time - fr_time);
+ if (err < min_err) {
+ fiv = iv;
+ min_err = err;
+ }
+ }
+ s5k6aa->fiv = fiv;
+
+ v4l2_dbg(1, debug, &s5k6aa->sd, "Changed frame interval to %d us\n",
+ fiv->reg_fr_time * 100);
+ return 0;
+}
+
+static int s5k6aa_s_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ int ret;
+
+ v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n",
+ fi->interval.numerator, fi->interval.denominator);
+
+ mutex_lock(&s5k6aa->lock);
+ ret = __s5k6aa_set_frame_interval(s5k6aa, fi);
+ s5k6aa->apply_cfg = 1;
+
+ mutex_unlock(&s5k6aa->lock);
+ return ret;
+}
+
+/*
+ * V4L2 subdev pad level and video operations
+ */
+static int s5k6aa_enum_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_interval_enum *fie)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ const struct s5k6aa_interval *fi;
+ int ret = 0;
+
+ if (fie->index > ARRAY_SIZE(s5k6aa_intervals))
+ return -EINVAL;
+
+ v4l_bound_align_image(&fie->width, S5K6AA_WIN_WIDTH_MIN,
+ S5K6AA_WIN_WIDTH_MAX, 1,
+ &fie->height, S5K6AA_WIN_HEIGHT_MIN,
+ S5K6AA_WIN_HEIGHT_MAX, 1, 0);
+
+ mutex_lock(&s5k6aa->lock);
+ fi = &s5k6aa_intervals[fie->index];
+ if (fie->width > fi->size.width || fie->height > fi->size.height)
+ ret = -EINVAL;
+ else
+ fie->interval = fi->interval;
+ mutex_unlock(&s5k6aa->lock);
+
+ return ret;
+}
+
+static int s5k6aa_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index >= ARRAY_SIZE(s5k6aa_formats))
+ return -EINVAL;
+
+ code->code = s5k6aa_formats[code->index].code;
+ return 0;
+}
+
+static int s5k6aa_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ int i = ARRAY_SIZE(s5k6aa_formats);
+
+ if (fse->index > 0)
+ return -EINVAL;
+
+ while (--i)
+ if (fse->code == s5k6aa_formats[i].code)
+ break;
+
+ fse->code = s5k6aa_formats[i].code;
+ fse->min_width = S5K6AA_WIN_WIDTH_MIN;
+ fse->max_width = S5K6AA_WIN_WIDTH_MAX;
+ fse->max_height = S5K6AA_WIN_HEIGHT_MIN;
+ fse->min_height = S5K6AA_WIN_HEIGHT_MAX;
+
+ return 0;
+}
+
+static struct v4l2_rect *
+__s5k6aa_get_crop_rect(struct s5k6aa *s5k6aa, struct v4l2_subdev_fh *fh,
+ enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ return &s5k6aa->ccd_rect;
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_crop(fh, 0);
+
+ return NULL;
+}
+
+static void s5k6aa_try_format(struct s5k6aa *s5k6aa,
+ struct v4l2_mbus_framefmt *mf)
+{
+ unsigned int index;
+
+ v4l_bound_align_image(&mf->width, S5K6AA_WIN_WIDTH_MIN,
+ S5K6AA_WIN_WIDTH_MAX, 1,
+ &mf->height, S5K6AA_WIN_HEIGHT_MIN,
+ S5K6AA_WIN_HEIGHT_MAX, 1, 0);
+
+ if (mf->colorspace != V4L2_COLORSPACE_JPEG &&
+ mf->colorspace != V4L2_COLORSPACE_REC709)
+ mf->colorspace = V4L2_COLORSPACE_JPEG;
+
+ index = s5k6aa_get_pixfmt_index(s5k6aa, mf);
+
+ mf->colorspace = s5k6aa_formats[index].colorspace;
+ mf->code = s5k6aa_formats[index].code;
+ mf->field = V4L2_FIELD_NONE;
+}
+
+static int s5k6aa_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ struct v4l2_mbus_framefmt *mf;
+
+ memset(fmt->reserved, 0, sizeof(fmt->reserved));
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ mf = v4l2_subdev_get_try_format(fh, 0);
+ fmt->format = *mf;
+ return 0;
+ }
+
+ mutex_lock(&s5k6aa->lock);
+ fmt->format = s5k6aa->preset->mbus_fmt;
+ mutex_unlock(&s5k6aa->lock);
+
+ return 0;
+}
+
+static int s5k6aa_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ struct s5k6aa_preset *preset = s5k6aa->preset;
+ struct v4l2_mbus_framefmt *mf;
+ struct v4l2_rect *crop;
+ int ret = 0;
+
+ mutex_lock(&s5k6aa->lock);
+ s5k6aa_try_format(s5k6aa, &fmt->format);
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ mf = v4l2_subdev_get_try_format(fh, fmt->pad);
+ crop = v4l2_subdev_get_try_crop(fh, 0);
+ } else {
+ if (s5k6aa->streaming) {
+ ret = -EBUSY;
+ } else {
+ mf = &preset->mbus_fmt;
+ crop = &s5k6aa->ccd_rect;
+ s5k6aa->apply_cfg = 1;
+ }
+ }
+
+ if (ret == 0) {
+ struct v4l2_subdev_frame_interval fiv = {
+ .interval = {0, 1}
+ };
+
+ *mf = fmt->format;
+ /*
+ * Make sure the crop window is valid, i.e. its size is
+ * greater than the output window, as the ISP supports
+ * only down-scaling.
+ */
+ crop->width = clamp_t(unsigned int, crop->width, mf->width,
+ S5K6AA_WIN_WIDTH_MAX);
+ crop->height = clamp_t(unsigned int, crop->height, mf->height,
+ S5K6AA_WIN_HEIGHT_MAX);
+ crop->left = clamp_t(unsigned int, crop->left, 0,
+ S5K6AA_WIN_WIDTH_MAX - crop->width);
+ crop->top = clamp_t(unsigned int, crop->top, 0,
+ S5K6AA_WIN_HEIGHT_MAX - crop->height);
+
+ /* Reset to minimum possible frame interval */
+ ret = __s5k6aa_set_frame_interval(s5k6aa, &fiv);
+ }
+ mutex_unlock(&s5k6aa->lock);
+
+ return ret;
+}
+
+static int s5k6aa_get_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_crop *crop)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ struct v4l2_rect *rect;
+
+ memset(crop->reserved, 0, sizeof(crop->reserved));
+ mutex_lock(&s5k6aa->lock);
+
+ rect = __s5k6aa_get_crop_rect(s5k6aa, fh, crop->which);
+ if (rect)
+ crop->rect = *rect;
+
+ mutex_unlock(&s5k6aa->lock);
+
+ v4l2_dbg(1, debug, sd, "Current crop rectangle: (%d,%d)/%dx%d\n",
+ rect->left, rect->top, rect->width, rect->height);
+
+ return 0;
+}
+
+static int s5k6aa_set_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_crop *crop)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ struct v4l2_mbus_framefmt *mf;
+ unsigned int max_x, max_y;
+ struct v4l2_rect *crop_r;
+
+ mutex_lock(&s5k6aa->lock);
+ crop_r = __s5k6aa_get_crop_rect(s5k6aa, fh, crop->which);
+
+ if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+ mf = &s5k6aa->preset->mbus_fmt;
+ s5k6aa->apply_crop = 1;
+ } else {
+ mf = v4l2_subdev_get_try_format(fh, 0);
+ }
+ v4l_bound_align_image(&crop->rect.width, mf->width,
+ S5K6AA_WIN_WIDTH_MAX, 1,
+ &crop->rect.height, mf->height,
+ S5K6AA_WIN_HEIGHT_MAX, 1, 0);
+
+ max_x = (S5K6AA_WIN_WIDTH_MAX - crop->rect.width) & ~1;
+ max_y = (S5K6AA_WIN_HEIGHT_MAX - crop->rect.height) & ~1;
+
+ crop->rect.left = clamp_t(unsigned int, crop->rect.left, 0, max_x);
+ crop->rect.top = clamp_t(unsigned int, crop->rect.top, 0, max_y);
+
+ *crop_r = crop->rect;
+
+ mutex_unlock(&s5k6aa->lock);
+
+ v4l2_dbg(1, debug, sd, "Set crop rectangle: (%d,%d)/%dx%d\n",
+ crop_r->left, crop_r->top, crop_r->width, crop_r->height);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops s5k6aa_pad_ops = {
+ .enum_mbus_code = s5k6aa_enum_mbus_code,
+ .enum_frame_size = s5k6aa_enum_frame_size,
+ .enum_frame_interval = s5k6aa_enum_frame_interval,
+ .get_fmt = s5k6aa_get_fmt,
+ .set_fmt = s5k6aa_set_fmt,
+ .get_crop = s5k6aa_get_crop,
+ .set_crop = s5k6aa_set_crop,
+};
+
+static const struct v4l2_subdev_video_ops s5k6aa_video_ops = {
+ .g_frame_interval = s5k6aa_g_frame_interval,
+ .s_frame_interval = s5k6aa_s_frame_interval,
+ .s_stream = s5k6aa_s_stream,
+};
+
+/*
+ * V4L2 subdev controls
+ */
+
+static int s5k6aa_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ int idx, err = 0;
+
+ v4l2_dbg(1, debug, sd, "ctrl: 0x%x, value: %d\n", ctrl->id, ctrl->val);
+
+ mutex_lock(&s5k6aa->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 (s5k6aa->power == 0)
+ goto unlock;
+ idx = s5k6aa->preset->index;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ err = s5k6aa_set_awb(s5k6aa, ctrl->val);
+ break;
+
+ case V4L2_CID_BRIGHTNESS:
+ err = s5k6aa_write(client, REG_USER_BRIGHTNESS, ctrl->val);
+ break;
+
+ case V4L2_CID_COLORFX:
+ err = s5k6aa_set_colorfx(s5k6aa, ctrl->val);
+ break;
+
+ case V4L2_CID_CONTRAST:
+ err = s5k6aa_write(client, REG_USER_CONTRAST, ctrl->val);
+ break;
+
+ case V4L2_CID_EXPOSURE_AUTO:
+ err = s5k6aa_set_auto_exposure(s5k6aa, ctrl->val);
+ break;
+
+ case V4L2_CID_HFLIP:
+ err = s5k6aa_set_mirror(s5k6aa, ctrl->val);
+ if (err)
+ break;
+ err = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
+ break;
+
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ err = s5k6aa_set_anti_flicker(s5k6aa, ctrl->val);
+ break;
+
+ case V4L2_CID_SATURATION:
+ err = s5k6aa_write(client, REG_USER_SATURATION, ctrl->val);
+ break;
+
+ case V4L2_CID_SHARPNESS:
+ err = s5k6aa_write(client, REG_USER_SHARPBLUR, ctrl->val);
+ break;
+
+ case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
+ err = s5k6aa_write(client, REG_P_COLORTEMP(idx), ctrl->val);
+ if (err)
+ break;
+ err = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
+ break;
+ }
+unlock:
+ mutex_unlock(&s5k6aa->lock);
+ return err;
+}
+
+static const struct v4l2_ctrl_ops s5k6aa_ctrl_ops = {
+ .s_ctrl = s5k6aa_s_ctrl,
+};
+
+static int s5k6aa_log_status(struct v4l2_subdev *sd)
+{
+ v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
+ return 0;
+}
+
+#define V4L2_CID_RED_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1001)
+#define V4L2_CID_GREEN_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1002)
+#define V4L2_CID_BLUE_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1003)
+
+static const struct v4l2_ctrl_config s5k6aa_ctrls[] = {
+ {
+ .ops = &s5k6aa_ctrl_ops,
+ .id = V4L2_CID_RED_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain, Red",
+ .min = 0,
+ .max = 256,
+ .def = 127,
+ .step = 1,
+ }, {
+ .ops = &s5k6aa_ctrl_ops,
+ .id = V4L2_CID_GREEN_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain, Green",
+ .min = 0,
+ .max = 256,
+ .def = 127,
+ .step = 1,
+ }, {
+ .ops = &s5k6aa_ctrl_ops,
+ .id = V4L2_CID_BLUE_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain, Blue",
+ .min = 0,
+ .max = 256,
+ .def = 127,
+ .step = 1,
+ },
+};
+
+static int s5k6aa_initialize_ctrls(struct s5k6aa *s5k6aa)
+{
+ const struct v4l2_ctrl_ops *ops = &s5k6aa_ctrl_ops;
+ struct s5k6aa_ctrls *ctrls = &s5k6aa->ctrls;
+ struct v4l2_ctrl_handler *hdl = &ctrls->handler;
+
+ int ret = v4l2_ctrl_handler_init(hdl, 16);
+ if (ret)
+ return ret;
+ /* Auto white balance cluster */
+ ctrls->awb = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_WHITE_BALANCE,
+ 0, 1, 1, 1);
+ ctrls->gain_red = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[0], NULL);
+ ctrls->gain_green = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[1], NULL);
+ ctrls->gain_blue = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[2], NULL);
+ v4l2_ctrl_auto_cluster(4, &ctrls->awb, 0, false);
+
+ ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
+ ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_cluster(2, &ctrls->hflip);
+
+ ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_EXPOSURE_AUTO,
+ V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO);
+ /* Exposure time: x 1 us */
+ ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
+ 0, 6000000U, 1, 100000U);
+ /* Total gain: 256 <=> 1x */
+ ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
+ 0, 256, 1, 256);
+ v4l2_ctrl_auto_cluster(3, &ctrls->auto_exp, 0, false);
+
+ 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);
+
+ v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_COLORFX,
+ V4L2_COLORFX_SKY_BLUE, ~0x6f, V4L2_COLORFX_NONE);
+
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+ 0, 256, 1, 0);
+
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, -127, 127, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -127, 127, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -127, 127, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, -127, 127, 1, 0);
+
+ if (hdl->error) {
+ ret = hdl->error;
+ v4l2_ctrl_handler_free(hdl);
+ return ret;
+ }
+
+ s5k6aa->sd.ctrl_handler = hdl;
+ return 0;
+}
+
+/*
+ * V4L2 subdev internal operations
+ */
+static int s5k6aa_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(fh, 0);
+ struct v4l2_rect *crop = v4l2_subdev_get_try_crop(fh, 0);
+
+ format->colorspace = s5k6aa_formats[0].colorspace;
+ format->code = s5k6aa_formats[0].code;
+ format->width = S5K6AA_OUT_WIDTH_DEF;
+ format->height = S5K6AA_OUT_HEIGHT_DEF;
+ format->field = V4L2_FIELD_NONE;
+
+ crop->width = S5K6AA_WIN_WIDTH_MAX;
+ crop->height = S5K6AA_WIN_HEIGHT_MAX;
+ crop->left = 0;
+ crop->top = 0;
+
+ return 0;
+}
+
+int s5k6aa_check_fw_revision(struct s5k6aa *s5k6aa)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+ u16 api_ver = 0, fw_rev = 0;
+
+ int ret = s5k6aa_set_ahb_address(client);
+
+ if (!ret)
+ ret = s5k6aa_read(client, REG_FW_APIVER, &api_ver);
+ if (!ret)
+ ret = s5k6aa_read(client, REG_FW_REVISION, &fw_rev);
+ if (ret) {
+ v4l2_err(&s5k6aa->sd, "FW revision check failed!\n");
+ return ret;
+ }
+
+ v4l2_info(&s5k6aa->sd, "FW API ver.: 0x%X, FW rev.: 0x%X\n",
+ api_ver, fw_rev);
+
+ return api_ver == S5K6AAFX_FW_APIVER ? 0 : -ENODEV;
+}
+
+static int s5k6aa_registered(struct v4l2_subdev *sd)
+{
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+ int ret;
+
+ mutex_lock(&s5k6aa->lock);
+ ret = __s5k6aa_power_on(s5k6aa);
+ if (!ret) {
+ msleep(100);
+ ret = s5k6aa_check_fw_revision(s5k6aa);
+ __s5k6aa_power_off(s5k6aa);
+ }
+ mutex_unlock(&s5k6aa->lock);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_internal_ops s5k6aa_subdev_internal_ops = {
+ .registered = s5k6aa_registered,
+ .open = s5k6aa_open,
+};
+
+static const struct v4l2_subdev_core_ops s5k6aa_core_ops = {
+ .s_power = s5k6aa_set_power,
+ .log_status = s5k6aa_log_status,
+};
+
+static const struct v4l2_subdev_ops s5k6aa_subdev_ops = {
+ .core = &s5k6aa_core_ops,
+ .pad = &s5k6aa_pad_ops,
+ .video = &s5k6aa_video_ops,
+};
+
+/*
+ * GPIO setup
+ */
+static int s5k6aa_configure_gpio(int nr, int val, const char *name)
+{
+ unsigned long flags = val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
+ int ret;
+
+ if (!gpio_is_valid(nr))
+ return 0;
+ ret = gpio_request_one(nr, flags, name);
+ if (!ret)
+ gpio_export(nr, 0);
+ return ret;
+}
+
+static void s5k6aa_free_gpios(struct s5k6aa *s5k6aa)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s5k6aa->gpio); i++) {
+ if (!gpio_is_valid(s5k6aa->gpio[i].gpio))
+ continue;
+ gpio_free(s5k6aa->gpio[i].gpio);
+ s5k6aa->gpio[i].gpio = -EINVAL;
+ }
+}
+
+static int s5k6aa_configure_gpios(struct s5k6aa *s5k6aa,
+ const struct s5k6aa_platform_data *pdata)
+{
+ const struct s5k6aa_gpio *gpio = &pdata->gpio_stby;
+ int ret;
+
+ s5k6aa->gpio[STBY].gpio = -EINVAL;
+ s5k6aa->gpio[RST].gpio = -EINVAL;
+
+ ret = s5k6aa_configure_gpio(gpio->gpio, gpio->level, "S5K6AA_STBY");
+ if (ret) {
+ s5k6aa_free_gpios(s5k6aa);
+ return ret;
+ }
+ s5k6aa->gpio[STBY] = *gpio;
+ if (gpio_is_valid(gpio->gpio))
+ gpio_set_value(gpio->gpio, 0);
+
+ gpio = &pdata->gpio_reset;
+ ret = s5k6aa_configure_gpio(gpio->gpio, gpio->level, "S5K6AA_RST");
+ if (ret) {
+ s5k6aa_free_gpios(s5k6aa);
+ return ret;
+ }
+ s5k6aa->gpio[RST] = *gpio;
+ if (gpio_is_valid(gpio->gpio))
+ gpio_set_value(gpio->gpio, 0);
+
+ return 0;
+}
+
+static int s5k6aa_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ const struct s5k6aa_platform_data *pdata = client->dev.platform_data;
+ struct v4l2_subdev *sd;
+ struct s5k6aa *s5k6aa;
+ int i, ret;
+
+ if (pdata == NULL) {
+ dev_err(&client->dev, "Platform data not specified\n");
+ return -EINVAL;
+ }
+
+ if (pdata->mclk_frequency == 0) {
+ dev_err(&client->dev, "MCLK frequency not specified\n");
+ return -EINVAL;
+ }
+
+ s5k6aa = kzalloc(sizeof(*s5k6aa), GFP_KERNEL);
+ if (!s5k6aa)
+ return -ENOMEM;
+
+ mutex_init(&s5k6aa->lock);
+
+ s5k6aa->mclk_frequency = pdata->mclk_frequency;
+ s5k6aa->bus_type = pdata->bus_type;
+ s5k6aa->mipi_lanes = pdata->nlanes;
+ s5k6aa->s_power = pdata->set_power;
+ s5k6aa->inv_hflip = pdata->horiz_flip;
+ s5k6aa->inv_vflip = pdata->vert_flip;
+
+ sd = &s5k6aa->sd;
+ strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name));
+ v4l2_i2c_subdev_init(sd, client, &s5k6aa_subdev_ops);
+
+ sd->internal_ops = &s5k6aa_subdev_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE;
+ sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+ ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad, 0);
+ if (ret)
+ goto out_err1;
+
+ ret = s5k6aa_configure_gpios(s5k6aa, pdata);
+ if (ret)
+ goto out_err2;
+
+ for (i = 0; i < S5K6AA_NUM_SUPPLIES; i++)
+ s5k6aa->supplies[i].supply = s5k6aa_supply_names[i];
+
+ ret = regulator_bulk_get(&client->dev, S5K6AA_NUM_SUPPLIES,
+ s5k6aa->supplies);
+ if (ret) {
+ dev_err(&client->dev, "Failed to get regulators\n");
+ goto out_err3;
+ }
+
+ ret = s5k6aa_initialize_ctrls(s5k6aa);
+ if (ret)
+ goto out_err4;
+
+ s5k6aa_presets_data_init(s5k6aa);
+
+ s5k6aa->ccd_rect.width = S5K6AA_WIN_WIDTH_MAX;
+ s5k6aa->ccd_rect.height = S5K6AA_WIN_HEIGHT_MAX;
+ s5k6aa->ccd_rect.left = 0;
+ s5k6aa->ccd_rect.top = 0;
+
+ return 0;
+
+out_err4:
+ regulator_bulk_free(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
+out_err3:
+ s5k6aa_free_gpios(s5k6aa);
+out_err2:
+ media_entity_cleanup(&s5k6aa->sd.entity);
+out_err1:
+ kfree(s5k6aa);
+ return ret;
+}
+
+static int s5k6aa_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct s5k6aa *s5k6aa = to_s5k6aa(sd);
+
+ v4l2_device_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(sd->ctrl_handler);
+ media_entity_cleanup(&sd->entity);
+ regulator_bulk_free(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
+ s5k6aa_free_gpios(s5k6aa);
+ kfree(s5k6aa);
+
+ return 0;
+}
+
+static const struct i2c_device_id s5k6aa_id[] = {
+ { DRIVER_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, s5k6aa_id);
+
+
+static struct i2c_driver s5k6aa_i2c_driver = {
+ .driver = {
+ .name = DRIVER_NAME
+ },
+ .probe = s5k6aa_probe,
+ .remove = s5k6aa_remove,
+ .id_table = s5k6aa_id,
+};
+
+static int __init s5k6aa_init(void)
+{
+ return i2c_add_driver(&s5k6aa_i2c_driver);
+}
+
+static void __exit s5k6aa_exit(void)
+{
+ i2c_del_driver(&s5k6aa_i2c_driver);
+}
+
+module_init(s5k6aa_init);
+module_exit(s5k6aa_exit);
+
+MODULE_DESCRIPTION("Samsung S5K6AA(FX) SXGA camera driver");
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
+MODULE_LICENSE("GPL");
git.openpandora.org / pandora-kernel.git / commitdiff