summaryrefslogtreecommitdiff
path: root/drivers/media/video/m5mols/m5mols_core.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/m5mols/m5mols_core.c')
-rw-r--r--drivers/media/video/m5mols/m5mols_core.c1004
1 files changed, 1004 insertions, 0 deletions
diff --git a/drivers/media/video/m5mols/m5mols_core.c b/drivers/media/video/m5mols/m5mols_core.c
new file mode 100644
index 000000000000..76eac26e84ae
--- /dev/null
+++ b/drivers/media/video/m5mols/m5mols_core.c
@@ -0,0 +1,1004 @@
+/*
+ * Driver for M-5MOLS 8M Pixel camera sensor with ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ * Author: HeungJun Kim, riverful.kim@samsung.com
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd.
+ * Author: 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/i2c.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/version.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/m5mols.h>
+
+#include "m5mols.h"
+#include "m5mols_reg.h"
+
+int m5mols_debug;
+module_param(m5mols_debug, int, 0644);
+
+#define MODULE_NAME "M5MOLS"
+#define M5MOLS_I2C_CHECK_RETRY 500
+
+/* The regulator consumer names for external voltage regulators */
+static struct regulator_bulk_data supplies[] = {
+ {
+ .supply = "core", /* ARM core power, 1.2V */
+ }, {
+ .supply = "dig_18", /* digital power 1, 1.8V */
+ }, {
+ .supply = "d_sensor", /* sensor power 1, 1.8V */
+ }, {
+ .supply = "dig_28", /* digital power 2, 2.8V */
+ }, {
+ .supply = "a_sensor", /* analog power */
+ }, {
+ .supply = "dig_12", /* digital power 3, 1.2V */
+ },
+};
+
+static struct v4l2_mbus_framefmt m5mols_default_ffmt[M5MOLS_RESTYPE_MAX] = {
+ [M5MOLS_RESTYPE_MONITOR] = {
+ .width = 1920,
+ .height = 1080,
+ .code = V4L2_MBUS_FMT_VYUY8_2X8,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+ [M5MOLS_RESTYPE_CAPTURE] = {
+ .width = 1920,
+ .height = 1080,
+ .code = V4L2_MBUS_FMT_JPEG_1X8,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+};
+#define SIZE_DEFAULT_FFMT ARRAY_SIZE(m5mols_default_ffmt)
+
+static const struct m5mols_resolution m5mols_reg_res[] = {
+ { 0x01, M5MOLS_RESTYPE_MONITOR, 128, 96 }, /* SUB-QCIF */
+ { 0x03, M5MOLS_RESTYPE_MONITOR, 160, 120 }, /* QQVGA */
+ { 0x05, M5MOLS_RESTYPE_MONITOR, 176, 144 }, /* QCIF */
+ { 0x06, M5MOLS_RESTYPE_MONITOR, 176, 176 },
+ { 0x08, M5MOLS_RESTYPE_MONITOR, 240, 320 }, /* QVGA */
+ { 0x09, M5MOLS_RESTYPE_MONITOR, 320, 240 }, /* QVGA */
+ { 0x0c, M5MOLS_RESTYPE_MONITOR, 240, 400 }, /* WQVGA */
+ { 0x0d, M5MOLS_RESTYPE_MONITOR, 400, 240 }, /* WQVGA */
+ { 0x0e, M5MOLS_RESTYPE_MONITOR, 352, 288 }, /* CIF */
+ { 0x13, M5MOLS_RESTYPE_MONITOR, 480, 360 },
+ { 0x15, M5MOLS_RESTYPE_MONITOR, 640, 360 }, /* qHD */
+ { 0x17, M5MOLS_RESTYPE_MONITOR, 640, 480 }, /* VGA */
+ { 0x18, M5MOLS_RESTYPE_MONITOR, 720, 480 },
+ { 0x1a, M5MOLS_RESTYPE_MONITOR, 800, 480 }, /* WVGA */
+ { 0x1f, M5MOLS_RESTYPE_MONITOR, 800, 600 }, /* SVGA */
+ { 0x21, M5MOLS_RESTYPE_MONITOR, 1280, 720 }, /* HD */
+ { 0x25, M5MOLS_RESTYPE_MONITOR, 1920, 1080 }, /* 1080p */
+ { 0x29, M5MOLS_RESTYPE_MONITOR, 3264, 2448 }, /* 2.63fps 8M */
+ { 0x39, M5MOLS_RESTYPE_MONITOR, 800, 602 }, /* AHS_MON debug */
+
+ { 0x02, M5MOLS_RESTYPE_CAPTURE, 320, 240 }, /* QVGA */
+ { 0x04, M5MOLS_RESTYPE_CAPTURE, 400, 240 }, /* WQVGA */
+ { 0x07, M5MOLS_RESTYPE_CAPTURE, 480, 360 },
+ { 0x08, M5MOLS_RESTYPE_CAPTURE, 640, 360 }, /* qHD */
+ { 0x09, M5MOLS_RESTYPE_CAPTURE, 640, 480 }, /* VGA */
+ { 0x0a, M5MOLS_RESTYPE_CAPTURE, 800, 480 }, /* WVGA */
+ { 0x10, M5MOLS_RESTYPE_CAPTURE, 1280, 720 }, /* HD */
+ { 0x14, M5MOLS_RESTYPE_CAPTURE, 1280, 960 }, /* 1M */
+ { 0x17, M5MOLS_RESTYPE_CAPTURE, 1600, 1200 }, /* 2M */
+ { 0x19, M5MOLS_RESTYPE_CAPTURE, 1920, 1080 }, /* Full-HD */
+ { 0x1a, M5MOLS_RESTYPE_CAPTURE, 2048, 1152 }, /* 3Mega */
+ { 0x1b, M5MOLS_RESTYPE_CAPTURE, 2048, 1536 },
+ { 0x1c, M5MOLS_RESTYPE_CAPTURE, 2560, 1440 }, /* 4Mega */
+ { 0x1d, M5MOLS_RESTYPE_CAPTURE, 2560, 1536 },
+ { 0x1f, M5MOLS_RESTYPE_CAPTURE, 2560, 1920 }, /* 5Mega */
+ { 0x21, M5MOLS_RESTYPE_CAPTURE, 3264, 1836 }, /* 6Mega */
+ { 0x22, M5MOLS_RESTYPE_CAPTURE, 3264, 1960 },
+ { 0x25, M5MOLS_RESTYPE_CAPTURE, 3264, 2448 }, /* 8Mega */
+};
+
+/**
+ * m5mols_swap_byte - an byte array to integer conversion function
+ * @size: size in bytes of I2C packet defined in the M-5MOLS datasheet
+ *
+ * Convert I2C data byte array with performing any required byte
+ * reordering to assure proper values for each data type, regardless
+ * of the architecture endianness.
+ */
+static u32 m5mols_swap_byte(u8 *data, u8 length)
+{
+ if (length == 1)
+ return *data;
+ else if (length == 2)
+ return be16_to_cpu(*((u16 *)data));
+ else
+ return be32_to_cpu(*((u32 *)data));
+}
+
+/**
+ * m5mols_read - I2C read function
+ * @reg: combination of size, category and command for the I2C packet
+ * @val: read value
+ */
+int m5mols_read(struct v4l2_subdev *sd, u32 reg, u32 *val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u8 rbuf[M5MOLS_I2C_MAX_SIZE + 1];
+ u8 size = I2C_SIZE(reg);
+ u8 category = I2C_CATEGORY(reg);
+ u8 cmd = I2C_COMMAND(reg);
+ struct i2c_msg msg[2];
+ u8 wbuf[5];
+ int ret;
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ if (size != 1 && size != 2 && size != 4) {
+ v4l2_err(sd, "Wrong data size\n");
+ return -EINVAL;
+ }
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 5;
+ msg[0].buf = wbuf;
+ wbuf[0] = 5;
+ wbuf[1] = M5MOLS_BYTE_READ;
+ wbuf[2] = category;
+ wbuf[3] = cmd;
+ wbuf[4] = size;
+
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = size + 1;
+ msg[1].buf = rbuf;
+
+ /* minimum stabilization time */
+ usleep_range(200, 200);
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+ if (ret < 0) {
+ v4l2_err(sd, "read failed: size:%d cat:%02x cmd:%02x. %d\n",
+ size, category, cmd, ret);
+ return ret;
+ }
+
+ *val = m5mols_swap_byte(&rbuf[1], size);
+
+ return 0;
+}
+
+/**
+ * m5mols_write - I2C command write function
+ * @reg: combination of size, category and command for the I2C packet
+ * @val: value to write
+ */
+int m5mols_write(struct v4l2_subdev *sd, u32 reg, u32 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u8 wbuf[M5MOLS_I2C_MAX_SIZE + 4];
+ u8 category = I2C_CATEGORY(reg);
+ u8 cmd = I2C_COMMAND(reg);
+ u8 size = I2C_SIZE(reg);
+ u32 *buf = (u32 *)&wbuf[4];
+ struct i2c_msg msg[1];
+ int ret;
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ if (size != 1 && size != 2 && size != 4) {
+ v4l2_err(sd, "Wrong data size\n");
+ return -EINVAL;
+ }
+
+ msg->addr = client->addr;
+ msg->flags = 0;
+ msg->len = (u16)size + 4;
+ msg->buf = wbuf;
+ wbuf[0] = size + 4;
+ wbuf[1] = M5MOLS_BYTE_WRITE;
+ wbuf[2] = category;
+ wbuf[3] = cmd;
+
+ *buf = m5mols_swap_byte((u8 *)&val, size);
+
+ usleep_range(200, 200);
+
+ ret = i2c_transfer(client->adapter, msg, 1);
+ if (ret < 0) {
+ v4l2_err(sd, "write failed: size:%d cat:%02x cmd:%02x. %d\n",
+ size, category, cmd, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int m5mols_busy(struct v4l2_subdev *sd, u8 category, u8 cmd, u32 mask)
+{
+ u32 busy, i;
+ int ret;
+
+ for (i = 0; i < M5MOLS_I2C_CHECK_RETRY; i++) {
+ ret = m5mols_read(sd, I2C_REG(category, cmd, 1), &busy);
+ if (ret < 0)
+ return ret;
+ if ((busy & mask) == mask)
+ return 0;
+ }
+ return -EBUSY;
+}
+
+/**
+ * m5mols_enable_interrupt - Clear interrupt pending bits and unmask interrupts
+ *
+ * Before writing desired interrupt value the INT_FACTOR register should
+ * be read to clear pending interrupts.
+ */
+int m5mols_enable_interrupt(struct v4l2_subdev *sd, u32 reg)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+ u32 mask = is_available_af(info) ? REG_INT_AF : 0;
+ u32 dummy;
+ int ret;
+
+ ret = m5mols_read(sd, SYSTEM_INT_FACTOR, &dummy);
+ if (!ret)
+ ret = m5mols_write(sd, SYSTEM_INT_ENABLE, reg & ~mask);
+ return ret;
+}
+
+/**
+ * m5mols_reg_mode - Write the mode and check busy status
+ *
+ * It always accompanies a little delay changing the M-5MOLS mode, so it is
+ * needed checking current busy status to guarantee right mode.
+ */
+static int m5mols_reg_mode(struct v4l2_subdev *sd, u32 mode)
+{
+ int ret = m5mols_write(sd, SYSTEM_SYSMODE, mode);
+
+ return ret ? ret : m5mols_busy(sd, CAT_SYSTEM, CAT0_SYSMODE, mode);
+}
+
+/**
+ * m5mols_mode - manage the M-5MOLS's mode
+ * @mode: the required operation mode
+ *
+ * The commands of M-5MOLS are grouped into specific modes. Each functionality
+ * can be guaranteed only when the sensor is operating in mode which which
+ * a command belongs to.
+ */
+int m5mols_mode(struct m5mols_info *info, u32 mode)
+{
+ struct v4l2_subdev *sd = &info->sd;
+ int ret = -EINVAL;
+ u32 reg;
+
+ if (mode < REG_PARAMETER && mode > REG_CAPTURE)
+ return ret;
+
+ ret = m5mols_read(sd, SYSTEM_SYSMODE, &reg);
+ if ((!ret && reg == mode) || ret)
+ return ret;
+
+ switch (reg) {
+ case REG_PARAMETER:
+ ret = m5mols_reg_mode(sd, REG_MONITOR);
+ if (!ret && mode == REG_MONITOR)
+ break;
+ if (!ret)
+ ret = m5mols_reg_mode(sd, REG_CAPTURE);
+ break;
+
+ case REG_MONITOR:
+ if (mode == REG_PARAMETER) {
+ ret = m5mols_reg_mode(sd, REG_PARAMETER);
+ break;
+ }
+
+ ret = m5mols_reg_mode(sd, REG_CAPTURE);
+ break;
+
+ case REG_CAPTURE:
+ ret = m5mols_reg_mode(sd, REG_MONITOR);
+ if (!ret && mode == REG_MONITOR)
+ break;
+ if (!ret)
+ ret = m5mols_reg_mode(sd, REG_PARAMETER);
+ break;
+
+ default:
+ v4l2_warn(sd, "Wrong mode: %d\n", mode);
+ }
+
+ if (!ret)
+ info->mode = mode;
+
+ return ret;
+}
+
+/**
+ * m5mols_get_version - retrieve full revisions information of M-5MOLS
+ *
+ * The version information includes revisions of hardware and firmware,
+ * AutoFocus alghorithm version and the version string.
+ */
+static int m5mols_get_version(struct v4l2_subdev *sd)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+ union {
+ struct m5mols_version ver;
+ u8 bytes[VERSION_SIZE];
+ } version;
+ u32 *value;
+ u8 cmd = CAT0_VER_CUSTOMER;
+ int ret;
+
+ do {
+ value = (u32 *)&version.bytes[cmd];
+ ret = m5mols_read(sd, SYSTEM_CMD(cmd), value);
+ if (ret)
+ return ret;
+ } while (cmd++ != CAT0_VER_AWB);
+
+ do {
+ value = (u32 *)&version.bytes[cmd];
+ ret = m5mols_read(sd, SYSTEM_VER_STRING, value);
+ if (ret)
+ return ret;
+ if (cmd >= VERSION_SIZE - 1)
+ return -EINVAL;
+ } while (version.bytes[cmd++]);
+
+ value = (u32 *)&version.bytes[cmd];
+ ret = m5mols_read(sd, AF_VERSION, value);
+ if (ret)
+ return ret;
+
+ /* store version information swapped for being readable */
+ info->ver = version.ver;
+ info->ver.fw = be16_to_cpu(info->ver.fw);
+ info->ver.hw = be16_to_cpu(info->ver.hw);
+ info->ver.param = be16_to_cpu(info->ver.param);
+ info->ver.awb = be16_to_cpu(info->ver.awb);
+
+ v4l2_info(sd, "Manufacturer\t[%s]\n",
+ is_manufacturer(info, REG_SAMSUNG_ELECTRO) ?
+ "Samsung Electro-Machanics" :
+ is_manufacturer(info, REG_SAMSUNG_OPTICS) ?
+ "Samsung Fiber-Optics" :
+ is_manufacturer(info, REG_SAMSUNG_TECHWIN) ?
+ "Samsung Techwin" : "None");
+ v4l2_info(sd, "Customer/Project\t[0x%02x/0x%02x]\n",
+ info->ver.customer, info->ver.project);
+
+ if (!is_available_af(info))
+ v4l2_info(sd, "No support Auto Focus on this firmware\n");
+
+ return ret;
+}
+
+/**
+ * __find_restype - Lookup M-5MOLS resolution type according to pixel code
+ * @code: pixel code
+ */
+static enum m5mols_restype __find_restype(enum v4l2_mbus_pixelcode code)
+{
+ enum m5mols_restype type = M5MOLS_RESTYPE_MONITOR;
+
+ do {
+ if (code == m5mols_default_ffmt[type].code)
+ return type;
+ } while (type++ != SIZE_DEFAULT_FFMT);
+
+ return 0;
+}
+
+/**
+ * __find_resolution - Lookup preset and type of M-5MOLS's resolution
+ * @mf: pixel format to find/negotiate the resolution preset for
+ * @type: M-5MOLS resolution type
+ * @resolution: M-5MOLS resolution preset register value
+ *
+ * Find nearest resolution matching resolution preset and adjust mf
+ * to supported values.
+ */
+static int __find_resolution(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf,
+ enum m5mols_restype *type,
+ u32 *resolution)
+{
+ const struct m5mols_resolution *fsize = &m5mols_reg_res[0];
+ const struct m5mols_resolution *match = NULL;
+ enum m5mols_restype stype = __find_restype(mf->code);
+ int i = ARRAY_SIZE(m5mols_reg_res);
+ unsigned int min_err = ~0;
+
+ while (i--) {
+ int err;
+ if (stype == fsize->type) {
+ err = abs(fsize->width - mf->width)
+ + abs(fsize->height - mf->height);
+
+ if (err < min_err) {
+ min_err = err;
+ match = fsize;
+ }
+ }
+ fsize++;
+ }
+ if (match) {
+ mf->width = match->width;
+ mf->height = match->height;
+ *resolution = match->reg;
+ *type = stype;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static struct v4l2_mbus_framefmt *__find_format(struct m5mols_info *info,
+ struct v4l2_subdev_fh *fh,
+ enum v4l2_subdev_format_whence which,
+ enum m5mols_restype type)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return fh ? v4l2_subdev_get_try_format(fh, 0) : NULL;
+
+ return &info->ffmt[type];
+}
+
+static int m5mols_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ if (fmt->pad != 0)
+ return -EINVAL;
+
+ format = __find_format(info, fh, fmt->which, info->res_type);
+ if (!format)
+ return -EINVAL;
+
+ fmt->format = *format;
+ return 0;
+}
+
+static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+ struct v4l2_mbus_framefmt *format = &fmt->format;
+ struct v4l2_mbus_framefmt *sfmt;
+ enum m5mols_restype type;
+ u32 resolution = 0;
+ int ret;
+
+ if (fmt->pad != 0)
+ return -EINVAL;
+
+ ret = __find_resolution(sd, format, &type, &resolution);
+ if (ret < 0)
+ return ret;
+
+ sfmt = __find_format(info, fh, fmt->which, type);
+ if (!sfmt)
+ return 0;
+
+ *sfmt = m5mols_default_ffmt[type];
+ sfmt->width = format->width;
+ sfmt->height = format->height;
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+ info->resolution = resolution;
+ info->code = format->code;
+ info->res_type = type;
+ }
+
+ return 0;
+}
+
+static int m5mols_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (!code || code->index >= SIZE_DEFAULT_FFMT)
+ return -EINVAL;
+
+ code->code = m5mols_default_ffmt[code->index].code;
+
+ return 0;
+}
+
+static struct v4l2_subdev_pad_ops m5mols_pad_ops = {
+ .enum_mbus_code = m5mols_enum_mbus_code,
+ .get_fmt = m5mols_get_fmt,
+ .set_fmt = m5mols_set_fmt,
+};
+
+/**
+ * m5mols_sync_controls - Apply default scene mode and the current controls
+ *
+ * This is used only streaming for syncing between v4l2_ctrl framework and
+ * m5mols's controls. First, do the scenemode to the sensor, then call
+ * v4l2_ctrl_handler_setup. It can be same between some commands and
+ * the scenemode's in the default v4l2_ctrls. But, such commands of control
+ * should be prior to the scenemode's one.
+ */
+int m5mols_sync_controls(struct m5mols_info *info)
+{
+ int ret = -EINVAL;
+
+ if (!is_ctrl_synced(info)) {
+ ret = m5mols_do_scenemode(info, REG_SCENE_NORMAL);
+ if (ret)
+ return ret;
+
+ v4l2_ctrl_handler_setup(&info->handle);
+ info->ctrl_sync = true;
+ }
+
+ return ret;
+}
+
+/**
+ * m5mols_start_monitor - Start the monitor mode
+ *
+ * Before applying the controls setup the resolution and frame rate
+ * in PARAMETER mode, and then switch over to MONITOR mode.
+ */
+static int m5mols_start_monitor(struct m5mols_info *info)
+{
+ struct v4l2_subdev *sd = &info->sd;
+ int ret;
+
+ ret = m5mols_mode(info, REG_PARAMETER);
+ if (!ret)
+ ret = m5mols_write(sd, PARM_MON_SIZE, info->resolution);
+ if (!ret)
+ ret = m5mols_write(sd, PARM_MON_FPS, REG_FPS_30);
+ if (!ret)
+ ret = m5mols_mode(info, REG_MONITOR);
+ if (!ret)
+ ret = m5mols_sync_controls(info);
+
+ return ret;
+}
+
+static int m5mols_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+
+ if (enable) {
+ int ret = -EINVAL;
+
+ if (is_code(info->code, M5MOLS_RESTYPE_MONITOR))
+ ret = m5mols_start_monitor(info);
+ if (is_code(info->code, M5MOLS_RESTYPE_CAPTURE))
+ ret = m5mols_start_capture(info);
+
+ return ret;
+ }
+
+ return m5mols_mode(info, REG_PARAMETER);
+}
+
+static const struct v4l2_subdev_video_ops m5mols_video_ops = {
+ .s_stream = m5mols_s_stream,
+};
+
+static int m5mols_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = to_sd(ctrl);
+ struct m5mols_info *info = to_m5mols(sd);
+ int ret;
+
+ info->mode_save = info->mode;
+
+ ret = m5mols_mode(info, REG_PARAMETER);
+ if (!ret)
+ ret = m5mols_set_ctrl(ctrl);
+ if (!ret)
+ ret = m5mols_mode(info, info->mode_save);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops m5mols_ctrl_ops = {
+ .s_ctrl = m5mols_s_ctrl,
+};
+
+static int m5mols_sensor_power(struct m5mols_info *info, bool enable)
+{
+ struct v4l2_subdev *sd = &info->sd;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ const struct m5mols_platform_data *pdata = info->pdata;
+ int ret;
+
+ if (enable) {
+ if (is_powered(info))
+ return 0;
+
+ if (info->set_power) {
+ ret = info->set_power(&client->dev, 1);
+ if (ret)
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
+ if (ret) {
+ info->set_power(&client->dev, 0);
+ return ret;
+ }
+
+ gpio_set_value(pdata->gpio_reset, !pdata->reset_polarity);
+ usleep_range(1000, 1000);
+ info->power = true;
+
+ return ret;
+ }
+
+ if (!is_powered(info))
+ return 0;
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
+ if (ret)
+ return ret;
+
+ if (info->set_power)
+ info->set_power(&client->dev, 0);
+
+ gpio_set_value(pdata->gpio_reset, pdata->reset_polarity);
+ usleep_range(1000, 1000);
+ info->power = false;
+
+ return ret;
+}
+
+/* m5mols_update_fw - optional firmware update routine */
+int __attribute__ ((weak)) m5mols_update_fw(struct v4l2_subdev *sd,
+ int (*set_power)(struct m5mols_info *, bool))
+{
+ return 0;
+}
+
+/**
+ * m5mols_sensor_armboot - Booting M-5MOLS internal ARM core.
+ *
+ * Booting internal ARM core makes the M-5MOLS is ready for getting commands
+ * with I2C. It's the first thing to be done after it powered up. It must wait
+ * at least 520ms recommended by M-5MOLS datasheet, after executing arm booting.
+ */
+static int m5mols_sensor_armboot(struct v4l2_subdev *sd)
+{
+ int ret;
+
+ ret = m5mols_write(sd, FLASH_CAM_START, REG_START_ARM_BOOT);
+ if (ret < 0)
+ return ret;
+
+ msleep(520);
+
+ ret = m5mols_get_version(sd);
+ if (!ret)
+ ret = m5mols_update_fw(sd, m5mols_sensor_power);
+ if (ret)
+ return ret;
+
+ v4l2_dbg(1, m5mols_debug, sd, "Success ARM Booting\n");
+
+ ret = m5mols_write(sd, PARM_INTERFACE, REG_INTERFACE_MIPI);
+ if (!ret)
+ ret = m5mols_enable_interrupt(sd, REG_INT_AF);
+
+ return ret;
+}
+
+static int m5mols_init_controls(struct m5mols_info *info)
+{
+ struct v4l2_subdev *sd = &info->sd;
+ u16 max_exposure;
+ u16 step_zoom;
+ int ret;
+
+ /* Determine value's range & step of controls for various FW version */
+ ret = m5mols_read(sd, AE_MAX_GAIN_MON, (u32 *)&max_exposure);
+ if (!ret)
+ step_zoom = is_manufacturer(info, REG_SAMSUNG_OPTICS) ? 31 : 1;
+ if (ret)
+ return ret;
+
+ v4l2_ctrl_handler_init(&info->handle, 6);
+ info->autowb = v4l2_ctrl_new_std(&info->handle,
+ &m5mols_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE,
+ 0, 1, 1, 0);
+ info->saturation = v4l2_ctrl_new_std(&info->handle,
+ &m5mols_ctrl_ops, V4L2_CID_SATURATION,
+ 1, 5, 1, 3);
+ info->zoom = v4l2_ctrl_new_std(&info->handle,
+ &m5mols_ctrl_ops, V4L2_CID_ZOOM_ABSOLUTE,
+ 1, 70, step_zoom, 1);
+ info->exposure = v4l2_ctrl_new_std(&info->handle,
+ &m5mols_ctrl_ops, V4L2_CID_EXPOSURE,
+ 0, max_exposure, 1, (int)max_exposure/2);
+ info->colorfx = v4l2_ctrl_new_std_menu(&info->handle,
+ &m5mols_ctrl_ops, V4L2_CID_COLORFX,
+ 4, (1 << V4L2_COLORFX_BW), V4L2_COLORFX_NONE);
+ info->autoexposure = v4l2_ctrl_new_std_menu(&info->handle,
+ &m5mols_ctrl_ops, V4L2_CID_EXPOSURE_AUTO,
+ 1, 0, V4L2_EXPOSURE_MANUAL);
+
+ sd->ctrl_handler = &info->handle;
+ if (info->handle.error) {
+ v4l2_err(sd, "Failed to initialize controls: %d\n", ret);
+ v4l2_ctrl_handler_free(&info->handle);
+ return info->handle.error;
+ }
+
+ v4l2_ctrl_cluster(2, &info->autoexposure);
+
+ return 0;
+}
+
+/**
+ * m5mols_s_power - Main sensor power control function
+ *
+ * To prevent breaking the lens when the sensor is powered off the Soft-Landing
+ * algorithm is called where available. The Soft-Landing algorithm availability
+ * dependends on the firmware provider.
+ */
+static int m5mols_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+ int ret;
+
+ if (on) {
+ ret = m5mols_sensor_power(info, true);
+ if (!ret)
+ ret = m5mols_sensor_armboot(sd);
+ if (!ret)
+ ret = m5mols_init_controls(info);
+ if (ret)
+ return ret;
+
+ info->ffmt[M5MOLS_RESTYPE_MONITOR] =
+ m5mols_default_ffmt[M5MOLS_RESTYPE_MONITOR];
+ info->ffmt[M5MOLS_RESTYPE_CAPTURE] =
+ m5mols_default_ffmt[M5MOLS_RESTYPE_CAPTURE];
+ return ret;
+ }
+
+ if (is_manufacturer(info, REG_SAMSUNG_TECHWIN)) {
+ ret = m5mols_mode(info, REG_MONITOR);
+ if (!ret)
+ ret = m5mols_write(sd, AF_EXECUTE, REG_AF_STOP);
+ if (!ret)
+ ret = m5mols_write(sd, AF_MODE, REG_AF_POWEROFF);
+ if (!ret)
+ ret = m5mols_busy(sd, CAT_SYSTEM, CAT0_STATUS,
+ REG_AF_IDLE);
+ if (!ret)
+ v4l2_info(sd, "Success soft-landing lens\n");
+ }
+
+ ret = m5mols_sensor_power(info, false);
+ if (!ret) {
+ v4l2_ctrl_handler_free(&info->handle);
+ info->ctrl_sync = false;
+ }
+
+ return ret;
+}
+
+static int m5mols_log_status(struct v4l2_subdev *sd)
+{
+ struct m5mols_info *info = to_m5mols(sd);
+
+ v4l2_ctrl_handler_log_status(&info->handle, sd->name);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops m5mols_core_ops = {
+ .s_power = m5mols_s_power,
+ .g_ctrl = v4l2_subdev_g_ctrl,
+ .s_ctrl = v4l2_subdev_s_ctrl,
+ .queryctrl = v4l2_subdev_queryctrl,
+ .querymenu = v4l2_subdev_querymenu,
+ .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+ .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+ .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+ .log_status = m5mols_log_status,
+};
+
+static const struct v4l2_subdev_ops m5mols_ops = {
+ .core = &m5mols_core_ops,
+ .pad = &m5mols_pad_ops,
+ .video = &m5mols_video_ops,
+};
+
+static void m5mols_irq_work(struct work_struct *work)
+{
+ struct m5mols_info *info =
+ container_of(work, struct m5mols_info, work_irq);
+ struct v4l2_subdev *sd = &info->sd;
+ u32 reg;
+ int ret;
+
+ if (!is_powered(info) ||
+ m5mols_read(sd, SYSTEM_INT_FACTOR, &info->interrupt))
+ return;
+
+ switch (info->interrupt & REG_INT_MASK) {
+ case REG_INT_AF:
+ if (!is_available_af(info))
+ break;
+ ret = m5mols_read(sd, AF_STATUS, &reg);
+ v4l2_dbg(2, m5mols_debug, sd, "AF %s\n",
+ reg == REG_AF_FAIL ? "Failed" :
+ reg == REG_AF_SUCCESS ? "Success" :
+ reg == REG_AF_IDLE ? "Idle" : "Busy");
+ break;
+ case REG_INT_CAPTURE:
+ if (!test_and_set_bit(ST_CAPT_IRQ, &info->flags))
+ wake_up_interruptible(&info->irq_waitq);
+
+ v4l2_dbg(2, m5mols_debug, sd, "CAPTURE\n");
+ break;
+ default:
+ v4l2_dbg(2, m5mols_debug, sd, "Undefined: %02x\n", reg);
+ break;
+ };
+}
+
+static irqreturn_t m5mols_irq_handler(int irq, void *data)
+{
+ struct v4l2_subdev *sd = data;
+ struct m5mols_info *info = to_m5mols(sd);
+
+ schedule_work(&info->work_irq);
+
+ return IRQ_HANDLED;
+}
+
+static int __devinit m5mols_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ const struct m5mols_platform_data *pdata = client->dev.platform_data;
+ struct m5mols_info *info;
+ struct v4l2_subdev *sd;
+ int ret;
+
+ if (pdata == NULL) {
+ dev_err(&client->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ if (!gpio_is_valid(pdata->gpio_reset)) {
+ dev_err(&client->dev, "No valid RESET GPIO specified\n");
+ return -EINVAL;
+ }
+
+ if (!pdata->irq) {
+ dev_err(&client->dev, "Interrupt not assigned\n");
+ return -EINVAL;
+ }
+
+ info = kzalloc(sizeof(struct m5mols_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->pdata = pdata;
+ info->set_power = pdata->set_power;
+
+ ret = gpio_request(pdata->gpio_reset, "M5MOLS_NRST");
+ if (ret) {
+ dev_err(&client->dev, "Failed to request gpio: %d\n", ret);
+ goto out_free;
+ }
+ gpio_direction_output(pdata->gpio_reset, pdata->reset_polarity);
+
+ ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies), supplies);
+ if (ret) {
+ dev_err(&client->dev, "Failed to get regulators: %d\n", ret);
+ goto out_gpio;
+ }
+
+ sd = &info->sd;
+ strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
+ v4l2_i2c_subdev_init(sd, client, &m5mols_ops);
+
+ info->pad.flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
+ if (ret < 0)
+ goto out_reg;
+ sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+
+ init_waitqueue_head(&info->irq_waitq);
+ INIT_WORK(&info->work_irq, m5mols_irq_work);
+ ret = request_irq(pdata->irq, m5mols_irq_handler,
+ IRQF_TRIGGER_RISING, MODULE_NAME, sd);
+ if (ret) {
+ dev_err(&client->dev, "Interrupt request failed: %d\n", ret);
+ goto out_me;
+ }
+ info->res_type = M5MOLS_RESTYPE_MONITOR;
+ return 0;
+out_me:
+ media_entity_cleanup(&sd->entity);
+out_reg:
+ regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
+out_gpio:
+ gpio_free(pdata->gpio_reset);
+out_free:
+ kfree(info);
+ return ret;
+}
+
+static int __devexit m5mols_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct m5mols_info *info = to_m5mols(sd);
+
+ v4l2_device_unregister_subdev(sd);
+ free_irq(info->pdata->irq, sd);
+
+ regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
+ gpio_free(info->pdata->gpio_reset);
+ media_entity_cleanup(&sd->entity);
+ kfree(info);
+ return 0;
+}
+
+static const struct i2c_device_id m5mols_id[] = {
+ { MODULE_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, m5mols_id);
+
+static struct i2c_driver m5mols_i2c_driver = {
+ .driver = {
+ .name = MODULE_NAME,
+ },
+ .probe = m5mols_probe,
+ .remove = __devexit_p(m5mols_remove),
+ .id_table = m5mols_id,
+};
+
+static int __init m5mols_mod_init(void)
+{
+ return i2c_add_driver(&m5mols_i2c_driver);
+}
+
+static void __exit m5mols_mod_exit(void)
+{
+ i2c_del_driver(&m5mols_i2c_driver);
+}
+
+module_init(m5mols_mod_init);
+module_exit(m5mols_mod_exit);
+
+MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>");
+MODULE_AUTHOR("Dongsoo Kim <dongsoo45.kim@samsung.com>");
+MODULE_DESCRIPTION("Fujitsu M-5MOLS 8M Pixel camera driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 08:47:50 +0000