This adds the Micron MT9P012 sensor driver
Signed-off-by: Sergio Aguirre <saaguirre@xxxxxx>
---
drivers/media/video/Kconfig | 8 +
drivers/media/video/Makefile | 1 +
drivers/media/video/mt9p012.c | 1890 ++++++++++++++++++++++++++++++++++++
drivers/media/video/mt9p012_regs.h | 74 ++
include/media/mt9p012.h | 37 +
5 files changed, 2010 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/mt9p012.c
create mode 100644 drivers/media/video/mt9p012_regs.h
create mode 100644 include/media/mt9p012.h
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index dcd3960..1616c32 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -305,6 +305,14 @@ config VIDEO_TCM825X
This is a driver for the Toshiba TCM825x VGA camera sensor.
It is used for example in Nokia N800.
+config VIDEO_MT9P012
+ tristate "Micron MT9P012 raw sensor driver (5MP)"
+ depends on I2C && VIDEO_V4L2
+ ---help---
+ This is a Video4Linux2 sensor-level driver for the Micron
+ MT9P012 camera. It is currently working with the TI OMAP3
+ camera controller.
+
config VIDEO_SAA7110
tristate "Philips SAA7110 video decoder"
depends on VIDEO_V4L1 && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index a2f73cf..f73b65c 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -100,6 +100,7 @@ obj-$(CONFIG_VIDEO_CAFE_CCIC) += cafe_ccic.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
+obj-$(CONFIG_VIDEO_MT9P012) += mt9p012.o
obj-$(CONFIG_VIDEO_OMAP3) += omap34xxcam.o isp/
diff --git a/drivers/media/video/mt9p012.c b/drivers/media/video/mt9p012.c
new file mode 100644
index 0000000..466570a
--- /dev/null
+++ b/drivers/media/video/mt9p012.c
@@ -0,0 +1,1890 @@
+/*
+ * drivers/media/video/mt9p012.c
+ *
+ * mt9p012 sensor driver
+ *
+ * Copyright (C) 2008 Texas Instruments.
+ *
+ * Contributors:
+ * Sameer Venkatraman <sameerv@xxxxxx>
+ * Sergio Aguirre <saaguirre@xxxxxx>
+ * Martinez Leonides
+ *
+ * Leverage OV9640.c
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <media/v4l2-int-device.h>
+
+#include <media/mt9p012.h>
+#include "mt9p012_regs.h"
+
+#define DRIVER_NAME "mt9p012"
+#define MOD_NAME "MT9P012: "
+
+/* MT9P012 has 8/16/32 registers */
+#define MT9P012_8BIT 1
+#define MT9P012_16BIT 2
+#define MT9P012_32BIT 4
+
+/* terminating token for reg list */
+#define MT9P012_TOK_TERM 0xFF
+
+/* delay token for reg list */
+#define MT9P012_TOK_DELAY 100
+
+/* The ID values we are looking for */
+#define MT9P012_MOD_ID 0x2800
+#define MT9P012_MFR_ID 0x0006
+
+/* FPS Capabilities */
+#define MT9P012_MIN_FPS 11
+#define MT9P012_DEF_FPS 15
+#define MT9P012_MAX_FPS 30
+
+#define MT9P012_I2C_RETRY_COUNT 5
+
+#define MT9P012_XCLK_NOM_1 12000000
+#define MT9P012_XCLK_NOM_2 24000000
+
+/* Still capture 5 MP */
+#define MT9P012_IMAGE_WIDTH_MAX 2592
+#define MT9P012_IMAGE_HEIGHT_MAX 1944
+/* Still capture 3 MP and down to VGA, using ISP resizer */
+#define MT9P012_IMAGE_WIDTH_MIN 2048
+#define MT9P012_IMAGE_HEIGHT_MIN 1536
+
+/* Video mode, for D1 NTSC, D1 PAL */
+#define MT9P012_VIDEO_WIDTH_2X_BINN 1296
+#define MT9P012_VIDEO_HEIGHT_2X_BINN 972
+
+/* Sensor Video mode size for VGA, CIF, QVGA in 4x binning mode */
+#define MT9P012_VIDEO_WIDTH_4X_BINN 648
+#define MT9P012_VIDEO_HEIGHT_4X_BINN 486
+/* To improve image quality in VGA */
+#define CIF_PIXELS (352 * 288)
+#define QQVGA_PIXELS (160 * 120)
+
+/* Video mode, for QCIF, SQCIF */
+#define MT9P012_VIDEO_WIDTH_4X_BINN_SCALED 216
+#define MT9P012_VIDEO_HEIGHT_4X_BINN_SCALED 162
+
+/* Default coarse integration times to get a good exposure */
+#define COARSE_INT_TIME_216 550
+#define COARSE_INT_TIME_648 550
+#define COARSE_INT_TIME_216_30FPS 1350
+#define COARSE_INT_TIME_648_30FPS 1350
+#define COARSE_INT_TIME_1296 1000
+#define COARSE_INT_TIME_3MP 1700
+#define COARSE_INT_TIME_5MP 1700
+#define COARSE_INT_TIME_INDEX 1
+#define TST_PAT 0x0
+
+/* Analog gain values */
+#define MIN_GAIN 0x08
+#define MAX_GAIN 0x7F
+#define DEF_GAIN 0x43
+#define GAIN_STEP 0x1
+
+#define GAIN_INDEX 1
+
+/* Exposure time values */
+#define DEF_MIN_EXPOSURE 0x08
+#define DEF_MAX_EXPOSURE 0x7F
+#define DEF_EXPOSURE 0x43
+#define EXPOSURE_STEP 1
+
+#define SENSOR_DETECTED 1
+#define SENSOR_NOT_DETECTED 0
+
+/**
+ * struct mt9p012_reg - mt9p012 register format
+ * @length: length of the register
+ * @reg: 16-bit offset to register
+ * @val: 8/16/32-bit register value
+ *
+ * Define a structure for MT9P012 register initialization values
+ */
+struct mt9p012_reg {
+ u16 length;
+ u16 reg;
+ u32 val;
+};
+
+enum image_size {
+ BIN4XSCALE,
+ BIN4X,
+ BIN2X,
+ THREE_MP,
+ FIVE_MP
+};
+
+enum pixel_format {
+ RAWBAYER10
+};
+
+#define NUM_IMAGE_SIZES 5
+#define NUM_PIXEL_FORMATS 1
+#define NUM_FPS 2 /* 2 ranges */
+#define FPS_LOW_RANGE 0
+#define FPS_HIGH_RANGE 1
+
+/**
+ * struct capture_size - image capture size information
+ * @width: image width in pixels
+ * @height: image height in pixels
+ */
+struct capture_size {
+ unsigned long width;
+ unsigned long height;
+};
+
+/**
+ * struct mt9p012_pll_settings - struct for storage of sensor pll values
+ * @vt_pix_clk_div: vertical pixel clock divider
+ * @vt_sys_clk_div: veritcal system clock divider
+ * @pre_pll_div: pre pll divider
+ * @fine_int_tm: fine resolution interval time
+ * @frame_lines: number of lines in frame
+ * @line_len: number of pixels in line
+ * @min_pll: minimum pll multiplier
+ * @max_pll: maximum pll multiplier
+ */
+struct mt9p012_pll_settings {
+ u16 vt_pix_clk_div;
+ u16 vt_sys_clk_div;
+ u16 pre_pll_div;
+
+ u16 fine_int_tm;
+ u16 frame_lines;
+ u16 line_len;
+
+ u16 min_pll;
+ u16 max_pll;
+};
+
+/*
+ * Array of image sizes supported by MT9P012. These must be ordered from
+ * smallest image size to largest.
+ */
+const static struct capture_size mt9p012_sizes[] = {
+ { 216, 162 }, /* 4X BINNING+SCALING */
+ { 648, 486 }, /* 4X BINNING */
+ { 1296, 972 }, /* 2X BINNING */
+ { 2048, 1536}, /* 3 MP */
+ { 2592, 1944}, /* 5 MP */
+};
+
+/* PLL settings for MT9P012 */
+enum mt9p012_pll_type {
+ PLL_5MP = 0,
+ PLL_3MP,
+ PLL_1296_15FPS,
+ PLL_1296_30FPS,
+ PLL_648_15FPS,
+ PLL_648_30FPS,
+ PLL_216_15FPS,
+ PLL_216_30FPS
+};
+
+/* Debug functions */
+static int debug;
+module_param(debug, bool, 0644);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+/**
+ * struct mt9p012_sensor - main structure for storage of sensor information
+ * @pdata: access functions and data for platform level information
+ * @v4l2_int_device: V4L2 device structure structure
+ * @i2c_client: iic client device structure
+ * @pix: V4L2 pixel format information structure
+ * @timeperframe: time per frame expressed as V4L fraction
+ * @scaler:
+ * @ver: mt9p012 chip version
+ * @fps: frames per second value
+ */
+struct mt9p012_sensor {
+ const struct mt9p012_platform_data *pdata;
+ struct v4l2_int_device *v4l2_int_device;
+ struct i2c_client *i2c_client;
+ struct v4l2_pix_format pix;
+ struct v4l2_fract timeperframe;
+ int scaler;
+ int ver;
+ int fps;
+ int state;
+};
+
+static struct mt9p012_sensor mt9p012;
+static struct i2c_driver mt9p012sensor_i2c_driver;
+static unsigned long xclk_current = MT9P012_XCLK_NOM_1;
+
+/* list of image formats supported by mt9p012 sensor */
+const static struct v4l2_fmtdesc mt9p012_formats[] = {
+ {
+ .description = "Bayer10 (GrR/BGb)",
+ .pixelformat = V4L2_PIX_FMT_SGRBG10,
+ }
+};
+
+#define NUM_CAPTURE_FORMATS ARRAY_SIZE(mt9p012_formats)
+
+/* Enters soft standby, all settings are maintained */
+const static struct mt9p012_reg stream_off_list[] = {
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+/* Exits soft standby */
+const static struct mt9p012_reg stream_on_list[] = {
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x01},
+ /* Sensor datasheet says we need 1 ms to allow PLL lock */
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 1},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+/* Structure which will set the exposure time */
+static struct mt9p012_reg set_exposure_time[] = {
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ /* less than frame_lines-1 */
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME, .val = 500},
+ /* updating */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+/* Structure to set analog gain */
+static struct mt9p012_reg set_analog_gain[] = {
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_ANALOG_GAIN_GLOBAL,
+ .val = MIN_GAIN},
+ /* updating */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0},
+};
+
+/*
+ * Common MT9P012 register initialization for all image sizes, pixel formats,
+ * and frame rates
+ */
+const static struct mt9p012_reg mt9p012_common[] = {
+ {MT9P012_8BIT, REG_SOFTWARE_RESET, 0x01},
+ {MT9P012_TOK_DELAY, 0x00, 5}, /* Delay = 5ms, min 2400 xcks */
+ {MT9P012_16BIT, REG_RESET_REGISTER, 0x10C8},
+ {MT9P012_8BIT, REG_GROUPED_PAR_HOLD, 0x01}, /* hold */
+ {MT9P012_16BIT, REG_ANALOG_GAIN_GREENR, 0x0020},
+ {MT9P012_16BIT, REG_ANALOG_GAIN_RED, 0x0020},
+ {MT9P012_16BIT, REG_ANALOG_GAIN_BLUE, 0x0020},
+ {MT9P012_16BIT, REG_ANALOG_GAIN_GREENB, 0x0020},
+ {MT9P012_16BIT, REG_DIGITAL_GAIN_GREENR, 0x0100},
+ {MT9P012_16BIT, REG_DIGITAL_GAIN_RED, 0x0100},
+ {MT9P012_16BIT, REG_DIGITAL_GAIN_BLUE, 0x0100},
+ {MT9P012_16BIT, REG_DIGITAL_GAIN_GREENB, 0x0100},
+ /* Recommended values for image quality, sensor Rev 1 */
+ {MT9P012_16BIT, 0x3088, 0x6FFB},
+ {MT9P012_16BIT, 0x308E, 0x2020},
+ {MT9P012_16BIT, 0x309E, 0x4400},
+ {MT9P012_16BIT, 0x30D4, 0x9080},
+ {MT9P012_16BIT, 0x3126, 0x00FF},
+ {MT9P012_16BIT, 0x3154, 0x1482},
+ {MT9P012_16BIT, 0x3158, 0x97C7},
+ {MT9P012_16BIT, 0x315A, 0x97C6},
+ {MT9P012_16BIT, 0x3162, 0x074C},
+ {MT9P012_16BIT, 0x3164, 0x0756},
+ {MT9P012_16BIT, 0x3166, 0x0760},
+ {MT9P012_16BIT, 0x316E, 0x8488},
+ {MT9P012_16BIT, 0x3172, 0x0003},
+ {MT9P012_16BIT, 0x30EA, 0x3F06},
+ {MT9P012_8BIT, REG_GROUPED_PAR_HOLD, 0x00}, /* update all at once */
+ {MT9P012_TOK_TERM, 0, 0}
+
+};
+
+/*
+ * mt9p012 register configuration for all combinations of pixel format and
+ * image size
+ */
+ /* 4X BINNING+SCALING */
+const static struct mt9p012_reg enter_video_216_15fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 126},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064,
+ .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_WIDTH_4X_BINN_SCALED},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_HEIGHT_4X_BINN_SCALED},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2593},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1945},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x04FC},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 1794},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 574},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 2712},
+ /* 0x10/0x30 = 0.3333 */
+ {.length = MT9P012_16BIT, .reg = REG_SCALE_M, .val = 0x0030},
+ /* enable scaler */
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0002},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_216},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+ };
+
+ /* Video mode, 4x binning + scaling, range 16 - 30 fps */
+const static struct mt9p012_reg enter_video_216_30fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 5},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 3},
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 192},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 10},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_WIDTH_4X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_HEIGHT_4X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2593},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1945},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x04FC},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 1794},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 1374},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 3712},
+ /* 0x10/0x30 = 0.3333 */
+ {.length = MT9P012_16BIT, .reg = REG_SCALE_M, .val = 0x0030},
+ /* enable scaler */
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0002},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_216_30FPS},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+ };
+
+
+ /*Video mode, 4x binning: 648 x 486, range 8 - 15 fps*/
+const static struct mt9p012_reg enter_video_648_15fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 126},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_WIDTH_4X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_HEIGHT_4X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2593},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1945},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x04FC},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 1794},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 574},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 2712},
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0000},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_648},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+ /* Video mode, 4x binning: 648 x 486, range 16 - 30 fps */
+const static struct mt9p012_reg enter_video_648_30fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 5},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 3},
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 192},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 10},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_WIDTH_4X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_HEIGHT_4X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2593},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1945},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x04FC},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 1794},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 1374},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 3712},
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0000},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_648_30FPS},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+ /* Video mode, scaler off: 1296 x 972, range 11 - 21 fps*/
+const static struct mt9p012_reg enter_video_1296_15fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 5},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 2},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 3},
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 134},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 10},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_WIDTH_2X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_HEIGHT_2X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2597},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1949},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x046C},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 1794},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 1061},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 3360},
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0000},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_1296},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+ /* YUV (YCbCr) VGA */
+const static struct mt9p012_reg enter_video_1296_30fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 5},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 3},
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 134},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 10},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_WIDTH_2X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_VIDEO_HEIGHT_2X_BINN},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2597},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1949},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x046C},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 1794},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 1061},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 3360},
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0000},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_1296},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+const static struct mt9p012_reg enter_image_mode_3MP_10fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 4},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 5},
+ /* 10 fps */
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 184},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_IMAGE_WIDTH_MIN},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_IMAGE_HEIGHT_MIN},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2599},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1951},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x0024},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 882},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 2056},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 5372},
+ /* 0x10/0x14 = 0.80 */
+ {.length = MT9P012_16BIT, .reg = REG_SCALE_M, .val = 0x0014},
+ /* enable scaler */
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0002},
+ {.length = MT9P012_16BIT, .reg = REG_TEST_PATTERN, .val = TST_PAT},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_3MP},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+/* Image mode, 5 MP @ 10 fps */
+const static struct mt9p012_reg enter_image_mode_5MP_10fps[] = {
+ /* stream off */
+ {.length = MT9P012_8BIT, .reg = REG_MODE_SELECT, .val = 0x00},
+ {.length = MT9P012_TOK_DELAY, .reg = 0x00, .val = 100},
+ /* hold */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x01},
+ {.length = MT9P012_16BIT, .reg = REG_VT_PIX_CLK_DIV, .val = 4},
+ {.length = MT9P012_16BIT, .reg = REG_VT_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_PRE_PLL_CLK_DIV, .val = 5},
+ /* 10 fps */
+ {.length = MT9P012_16BIT, .reg = REG_PLL_MULTIPLIER, .val = 184},
+ {.length = MT9P012_16BIT, .reg = REG_OP_PIX_CLK_DIV, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_OP_SYS_CLK_DIV, .val = 1},
+ {.length = MT9P012_16BIT, .reg = REG_RESERVED_MFR_3064, .val = 0x0805},
+ {.length = MT9P012_16BIT, .reg = REG_X_OUTPUT_SIZE,
+ .val = MT9P012_IMAGE_WIDTH_MAX},
+ {.length = MT9P012_16BIT, .reg = REG_Y_OUTPUT_SIZE,
+ .val = MT9P012_IMAGE_HEIGHT_MAX},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_START, .val = 8},
+ {.length = MT9P012_16BIT, .reg = REG_X_ADDR_END, .val = 2599},
+ {.length = MT9P012_16BIT, .reg = REG_Y_ADDR_END, .val = 1951},
+ {.length = MT9P012_16BIT, .reg = REG_READ_MODE, .val = 0x0024},
+ {.length = MT9P012_16BIT, .reg = REG_FINE_INT_TIME, .val = 882},
+ {.length = MT9P012_16BIT, .reg = REG_FRAME_LEN_LINES, .val = 2056},
+ {.length = MT9P012_16BIT, .reg = REG_LINE_LEN_PCK, .val = 5372},
+ {.length = MT9P012_16BIT, .reg = REG_SCALE_M, .val = 0x0000},
+ /* disable scaler */
+ {.length = MT9P012_16BIT, .reg = REG_SCALING_MODE, .val = 0x0000},
+ {.length = MT9P012_16BIT, .reg = REG_COARSE_INT_TIME,
+ .val = COARSE_INT_TIME_5MP},
+ /* update */
+ {.length = MT9P012_8BIT, .reg = REG_GROUPED_PAR_HOLD, .val = 0x00},
+ {.length = MT9P012_TOK_TERM, .reg = 0, .val = 0}
+};
+
+static u32 min_exposure_time;
+static u32 max_exposure_time;
+static u32 pix_clk_freq;
+
+/* Structure to set frame rate */
+static struct mt9p012_reg set_fps[2];
+
+/**
+ * struct mt9p012_pll_settings - struct for storage of sensor pll values
+ * @vt_pix_clk_div: vertical pixel clock divider
+ * @vt_sys_clk_div: veritcal system clock divider
+ * @pre_pll_div: pre pll divider
+ * @fine_int_tm: fine resolution interval time
+ * @frame_lines: number of lines in frame
+ * @line_len: number of pixels in line
+ * @min_pll: minimum pll multiplier
+ * @max_pll: maximum pll multiplier
+ */
+const static struct mt9p012_pll_settings all_pll_settings[] = {
+ /* PLL_5MP */
+ {.vt_pix_clk_div = 4, .vt_sys_clk_div = 1, .pre_pll_div = 5,
+ .fine_int_tm = 882, .frame_lines = 2056, .line_len = 5372,
+ .min_pll = 160, .max_pll = 200},
+ /* PLL_3MP */
+ {.vt_pix_clk_div = 4, .vt_sys_clk_div = 1, .pre_pll_div = 5,
+ .fine_int_tm = 882, .frame_lines = 2056, .line_len = 5372,
+ .min_pll = 160, .max_pll = 200},
+ /* PLL_1296_15FPS */
+ {.vt_pix_clk_div = 5, .vt_sys_clk_div = 2, .pre_pll_div = 3,
+ .fine_int_tm = 1794, .frame_lines = 1061, .line_len = 3360,
+ .min_pll = 96, .max_pll = 190},
+ /* PLL_1296_30FPS */
+ {.vt_pix_clk_div = 5, .vt_sys_clk_div = 1, .pre_pll_div = 3,
+ .fine_int_tm = 1794, .frame_lines = 1061, .line_len = 3360,
+ .min_pll = 96, .max_pll = 150},
+ /* PLL_648_15FPS */
+ {.vt_pix_clk_div = 8, .vt_sys_clk_div = 2, .pre_pll_div = 2,
+ .fine_int_tm = 1794, .frame_lines = 574, .line_len = 2712,
+ .min_pll = 92, .max_pll = 128},
+ /* PLL_648_30FPS */
+ {.vt_pix_clk_div = 5, .vt_sys_clk_div = 2, .pre_pll_div = 3,
+ .fine_int_tm = 1794, .frame_lines = 1374, .line_len = 3712,
+ .min_pll = 96, .max_pll = 192},
+ /* PLL_216_15FPS */
+ {.vt_pix_clk_div = 8, .vt_sys_clk_div = 2, .pre_pll_div = 2,
+ .fine_int_tm = 1794, .frame_lines = 574, .line_len = 2712,
+ .min_pll = 92, .max_pll = 126},
+ /* PLL_216_30FPS */
+ {.vt_pix_clk_div = 5, .vt_sys_clk_div = 2, .pre_pll_div = 3,
+ .fine_int_tm = 1794, .frame_lines = 1374, .line_len = 3712,
+ .min_pll = 96, .max_pll = 192}
+};
+
+static enum mt9p012_pll_type current_pll_video;
+
+const static struct mt9p012_reg *
+ mt9p012_reg_init[NUM_FPS][NUM_IMAGE_SIZES] =
+{
+ {
+ enter_video_216_15fps,
+ enter_video_648_15fps,
+ enter_video_1296_15fps,
+ enter_image_mode_3MP_10fps,
+ enter_image_mode_5MP_10fps
+ },
+ {
+ enter_video_216_30fps,
+ enter_video_648_30fps,
+ enter_video_1296_30fps,
+ enter_image_mode_3MP_10fps,
+ enter_image_mode_5MP_10fps
+ },
+};
+
+/**
+ * struct vcontrol - Video controls
+ * @v4l2_queryctrl: V4L2 VIDIOC_QUERYCTRL ioctl structure
+ * @current_value: current value of this control
+ */
+static struct vcontrol {
+ struct v4l2_queryctrl qc;
+ int current_value;
+} video_control[] = {
+ {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Exposure",
+ .minimum = DEF_MIN_EXPOSURE,
+ .maximum = DEF_MAX_EXPOSURE,
+ .step = EXPOSURE_STEP,
+ .default_value = DEF_EXPOSURE,
+ },
+ .current_value = DEF_EXPOSURE,
+ },
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain",
+ .minimum = MIN_GAIN,
+ .maximum = MAX_GAIN,
+ .step = GAIN_STEP,
+ .default_value = DEF_GAIN,
+ },
+ .current_value = DEF_GAIN,
+ }
+};
+
+/**
+ * find_vctrl - Finds the requested ID in the video control structure array
+ * @id: ID of control to search the video control array for
+ *
+ * Returns the index of the requested ID from the control structure array
+ */
+static int
+find_vctrl(int id)
+{
+ int i;
+
+ if (id < V4L2_CID_BASE)
+ return -EDOM;
+
+ for (i = (ARRAY_SIZE(video_control) - 1); i >= 0; i--)
+ if (video_control[i].qc.id == id)
+ break;
+ if (i < 0)
+ i = -EINVAL;
+ return i;
+}
+
+/**
+ * mt9p012_read_reg - Read a value from a register in an mt9p012 sensor device
+ * @client: i2c driver client structure
+ * @data_length: length of data to be read
+ * @reg: register address / offset
+ * @val: stores the value that gets read
+ *
+ * Read a value from a register in an mt9p012 sensor device.
+ * The value is returned in 'val'.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int
+mt9p012_read_reg(struct i2c_client *client, u16 data_length, u16 reg, u32 *val)
+{
+ int err;
+ struct i2c_msg msg[1];
+ unsigned char data[4];
+
+ if (!client->adapter)
+ return -ENODEV;
+ if (data_length != MT9P012_8BIT && data_length != MT9P012_16BIT
+ && data_length != MT9P012_32BIT)
+ return -EINVAL;
+
+ msg->addr = client->addr;
+ msg->flags = 0;
+ msg->len = 2;
+ msg->buf = data;
+
+ /* high byte goes out first */
+ data[0] = (u8) (reg >> 8);;
+ data[1] = (u8) (reg & 0xff);
+ err = i2c_transfer(client->adapter, msg, 1);
+ if (err >= 0) {
+ msg->len = data_length;
+ msg->flags = I2C_M_RD;
+ err = i2c_transfer(client->adapter, msg, 1);
+ }
+ if (err >= 0) {
+ *val = 0;
+ /* high byte comes first */
+ if (data_length == MT9P012_8BIT)
+ *val = data[0];
+ else if (data_length == MT9P012_16BIT)
+ *val = data[1] + (data[0] << 8);
+ else
+ *val = data[3] + (data[2] << 8) +
+ (data[1] << 16) + (data[0] << 24);
+ return 0;
+ }
+ dev_err(&client->dev, "read from offset 0x%x error %d", reg, err);
+ return err;
+}
+/**
+ * mt9p012_write_reg - Write a value to a register in an mt9p012 sensor device
+ * @client: i2c driver client structure
+ * @data_length: length of data to be read
+ * @reg: register address / offset
+ * @val: value to be written to specified register
+ *
+ * Write a value to a register in an mt9p012 sensor device.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int
+mt9p012_write_reg(struct i2c_client *client, u16 data_length, u16 reg, u32 val)
+{
+ int err;
+ struct i2c_msg msg[1];
+ unsigned char data[6];
+ int retry = 0;
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ if (data_length != MT9P012_8BIT && data_length != MT9P012_16BIT
+ && data_length != MT9P012_32BIT)
+ return -EINVAL;
+
+again:
+ msg->addr = client->addr;
+ msg->flags = 0;
+ msg->len = 2 + data_length;
+ msg->buf = data;
+
+ /* high byte goes out first */
+ data[0] = (u8) (reg >> 8);;
+ data[1] = (u8) (reg & 0xff);
+
+ if (data_length == MT9P012_8BIT)
+ data[2] = (u8) (val & 0xff);
+ else if (data_length == MT9P012_16BIT) {
+ data[2] = (u8) (val >> 8);
+ data[3] = (u8) (val & 0xff);
+ } else {
+ data[2] = (u8) (val >> 24);
+ data[3] = (u8) (val >> 16);
+ data[4] = (u8) (val >> 8);
+ data[5] = (u8) (val & 0xff);
+ }
+
+ err = i2c_transfer(client->adapter, msg, 1);
+ if (err >= 0)
+ return 0;
+
+ v4l_dbg(1, debug, client, "wrote 0x%x to offset 0x%x error %d", val,
+ reg, err);
+ if (retry <= MT9P012_I2C_RETRY_COUNT) {
+ v4l_warn(client, "retry ... %d", retry);
+ retry++;
+ mdelay(20);
+ goto again;
+ }
+ return err;
+}
+
+/**
+ * mt9p012_write_regs - Initializes a list of MT9P012 registers
+ * @client: i2c driver client structure
+ * @reglist: list of registers to be written
+ *
+ * Initializes a list of MT9P012 registers. The list of registers is
+ * terminated by MT9P012_TOK_TERM.
+ */
+static int
+mt9p012_write_regs(struct i2c_client *client,
+ const struct mt9p012_reg reglist[])
+{
+ int err;
+ const struct mt9p012_reg *next = reglist;
+
+ for (; next->length != MT9P012_TOK_TERM; next++) {
+ if (next->length == MT9P012_TOK_DELAY) {
+ mdelay(next->val);
+ continue;
+ }
+
+ err = mt9p012_write_reg(client, next->length,
+ next->reg, next->val);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+/**
+ * mt9p012_calc_pll - Calculate PLL settings based on input image size
+ * @isize: enum value corresponding to image size
+ * @xclk: xclk value (calculate by mt9p012sensor_calc_xclk())
+ * @sensor: pointer to sensor device information structure
+ *
+ * Calculates sensor PLL related settings (scaler, fps, pll_multiplier,
+ * pix_clk_freq, min_exposure_time, max_exposure_time) based on input
+ * image size. It then applies the fps register settings based on
+ * these calculations.
+ */
+static int
+mt9p012_calc_pll(enum image_size isize,
+ unsigned long xclk,
+ struct mt9p012_sensor *sensor)
+{
+ int err = 0, row = 1, i = 0;
+ unsigned int vt_pix_clk;
+ unsigned int pll_multiplier;
+ unsigned int exposure_factor, pix_clk_scaled;
+ struct i2c_client *client = sensor->i2c_client;
+ struct vcontrol *lvc;
+
+ /* Greater than 1296x972
+ 1. Scaler is 0
+ 2. fps is 10
+ 3. Apply image mode settings
+ 4. Turn Streaming ON.
+ 5. Exit
+ */
+ if (isize > BIN2X) {
+ /* Burst Mode */
+ sensor->scaler = 0;
+ sensor->fps = 10;
+ current_pll_video = PLL_5MP;
+ return 0;
+ }
+
+ /* Greater than 648X486 case
+ 1. Scaler is 0
+ 2. If fps>21 then choose PLL for 30
+ 3. If fps<21 then choose PLL for 15
+
+ Greater than 216X162 case
+ 1. Scaler is 1
+ 2. If fps>15 then choose PLL for 30
+ 3. If fps<15 then choose PLL for 15
+
+ Greater than 0 to 216x162
+ 1. Scaler is 2.
+ 2. If fps>15 then choose PLL for 30
+ 3. If fps<15 then choose PLL for 15
+ */
+
+ if (isize > BIN4X) {
+ sensor->scaler = 0;
+ if (sensor->fps > 21)
+ current_pll_video = PLL_1296_30FPS;
+ else
+ current_pll_video = PLL_1296_15FPS;
+ } else if (isize > BIN4XSCALE) {
+ sensor->scaler = 1;
+ if (sensor->fps > 15)
+ current_pll_video = PLL_648_30FPS;
+ else
+ current_pll_video = PLL_648_15FPS;
+ } else {
+ sensor->scaler = 2;
+ if (sensor->fps > 15)
+ current_pll_video = PLL_216_30FPS;
+ else
+ current_pll_video = PLL_216_15FPS;
+ }
+
+ /* Row adjustment */
+ if (sensor->scaler && (sensor->fps < 16))
+ row = 2; /* Adjustment when using 4x binning and 12 MHz clk */
+
+ /* Calculate the PLL, set fps register */
+ vt_pix_clk = sensor->fps *
+ all_pll_settings[current_pll_video].frame_lines *
+ all_pll_settings[current_pll_video].line_len;
+
+ pll_multiplier =
+ (((vt_pix_clk
+ * all_pll_settings[current_pll_video].vt_pix_clk_div
+ * all_pll_settings[current_pll_video].vt_sys_clk_div
+ * row) / xclk)
+ * all_pll_settings[current_pll_video].pre_pll_div) + 1;
+
+ if (pll_multiplier < all_pll_settings[current_pll_video].min_pll)
+ pll_multiplier = all_pll_settings[current_pll_video].min_pll;
+ else if (pll_multiplier > all_pll_settings[current_pll_video].max_pll)
+ pll_multiplier = all_pll_settings[current_pll_video].max_pll;
+
+ pix_clk_freq = (xclk /
+ (all_pll_settings[current_pll_video].pre_pll_div
+ * all_pll_settings[current_pll_video].vt_pix_clk_div
+ * all_pll_settings[current_pll_video].vt_sys_clk_div
+ * row)) * pll_multiplier;
+ min_exposure_time = (all_pll_settings[current_pll_video].fine_int_tm
+ * 1000000 / pix_clk_freq) + 1;
+ exposure_factor = (all_pll_settings[current_pll_video].frame_lines - 1)
+ * all_pll_settings[current_pll_video].line_len;
+ exposure_factor += all_pll_settings[current_pll_video].fine_int_tm;
+ exposure_factor *= 100;
+ pix_clk_scaled = pix_clk_freq / 100;
+ max_exposure_time = (exposure_factor / pix_clk_scaled) * 100;
+
+ /* Apply the fps settings */
+ set_fps[0].length = MT9P012_16BIT;
+ set_fps[0].reg = REG_PLL_MULTIPLIER;
+ set_fps[0].val = pll_multiplier;
+ set_fps[1].length = MT9P012_TOK_TERM;
+ set_fps[1].reg = 0;
+ set_fps[1].val = 0;
+
+ /* Update min/max for query control */
+ i = find_vctrl(V4L2_CID_EXPOSURE);
+ if (i >= 0) {
+ lvc = &video_control[i];
+ lvc->qc.minimum = min_exposure_time;
+ lvc->qc.maximum = max_exposure_time;
+ }
+
+ err = mt9p012_write_regs(client, set_fps);
+ return err;
+}
+
+/**
+ * mt9p012_calc_size - Find the best match for a requested image capture size
+ * @width: requested image width in pixels
+ * @height: requested image height in pixels
+ *
+ * Find the best match for a requested image capture size. The best match
+ * is chosen as the nearest match that has the same number or fewer pixels
+ * as the requested size, or the smallest image size if the requested size
+ * has fewer pixels than the smallest image.
+ */
+static enum image_size mt9p012_calc_size(unsigned int width,
+ unsigned int height)
+{
+ enum image_size isize;
+ unsigned long pixels = width * height;
+
+ for (isize = BIN4XSCALE; isize <= FIVE_MP; isize++) {
+ if (mt9p012_sizes[isize].height *
+ mt9p012_sizes[isize].width >= pixels) {
+ /* To improve image quality in VGA */
+ if ((pixels > CIF_PIXELS) && (isize == BIN4X)) {
+ isize = BIN2X;
+ } else if ((pixels > QQVGA_PIXELS) &&
+ (isize == BIN4XSCALE)) {
+ isize = BIN4X;
+ }
+ return isize;
+ }
+ }
+
+ return FIVE_MP;
+}
+
+/**
+ * mt9p012_find_isize - Find the best match for a requested image capture size
+ * @width: requested image width in pixels
+ * @height: requested image height in pixels
+ *
+ * Find the best match for a requested image capture size. The best match
+ * is chosen as the nearest match that has the same number or fewer pixels
+ * as the requested size, or the smallest image size if the requested size
+ * has fewer pixels than the smallest image.
+ */
+static enum image_size mt9p012_find_isize(unsigned int width)
+{
+ enum image_size isize;
+
+ for (isize = BIN4XSCALE; isize <= FIVE_MP; isize++) {
+ if (mt9p012_sizes[isize].width >= width)
+ break;
+ }
+
+ return isize;
+}
+/**
+ * mt9p012_find_fps_index - Find the best fps range match for a
+ * requested frame rate
+ * @fps: desired frame rate
+ * @isize: enum value corresponding to image size
+ *
+ * Find the best match for a requested frame rate. The best match
+ * is chosen between two fps ranges (11 - 15 and 16 - 30 fps) depending on
+ * the image size. For image sizes larger than BIN2X, frame rate is fixed
+ * at 10 fps.
+ */
+static unsigned int mt9p012_find_fps_index(unsigned int fps,
+ enum image_size isize)
+{
+ unsigned int index = FPS_LOW_RANGE;
+
+ if (isize > BIN4X) {
+ if (fps > 21)
+ index = FPS_HIGH_RANGE;
+ } else {
+ if (fps > 15)
+ index = FPS_HIGH_RANGE;
+ }
+
+ return index;
+}
+
+/**
+ * mt9p012sensor_calc_xclk - Calculate the required xclk frequency
+ * @c: i2c client driver structure
+ *
+ * Given the image capture format in pix, the nominal frame period in
+ * timeperframe, calculate and return the required xclk frequency
+ */
+static unsigned long mt9p012sensor_calc_xclk(struct i2c_client *c)
+{
+ struct mt9p012_sensor *sensor = i2c_get_clientdata(c);
+ struct v4l2_fract *timeperframe = &sensor->timeperframe;
+ struct v4l2_pix_format *pix = &sensor->pix;
+
+ if ((timeperframe->numerator == 0)
+ || (timeperframe->denominator == 0)) {
+ /* supply a default nominal_timeperframe */
+ timeperframe->numerator = 1;
+ timeperframe->denominator = MT9P012_DEF_FPS;
+ }
+
+ sensor->fps = timeperframe->denominator/timeperframe->numerator;
+ if (sensor->fps < MT9P012_MIN_FPS)
+ sensor->fps = MT9P012_MIN_FPS;
+ else if (sensor->fps > MT9P012_MAX_FPS)
+ sensor->fps = MT9P012_MAX_FPS;
+
+ timeperframe->numerator = 1;
+ timeperframe->denominator = sensor->fps;
+
+ if ((pix->width <= MT9P012_VIDEO_WIDTH_4X_BINN) && (sensor->fps > 15))
+ xclk_current = MT9P012_XCLK_NOM_2;
+ else
+ xclk_current = MT9P012_XCLK_NOM_1;
+
+ return xclk_current;
+}
+
+/**
+ * mt9p012_configure - Configure the mt9p012 for the specified image mode
+ * @s: pointer to standard V4L2 device structure
+ *
+ * Configure the mt9p012 for a specified image size, pixel format, and frame
+ * period. xclk is the frequency (in Hz) of the xclk input to the mt9p012.
+ * fper is the frame period (in seconds) expressed as a fraction.
+ * Returns zero if successful, or non-zero otherwise.
+ * The actual frame period is returned in fper.
+ */
+static int mt9p012_configure(struct v4l2_int_device *s)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+ struct v4l2_pix_format *pix = &sensor->pix;
+ struct i2c_client *client = sensor->i2c_client;
+ enum image_size isize;
+ unsigned int fps_index;
+ int err;
+
+ isize = mt9p012_find_isize(pix->width);
+
+ /* common register initialization */
+ err = mt9p012_write_regs(client, mt9p012_common);
+ if (err)
+ return err;
+
+ fps_index = mt9p012_find_fps_index(sensor->fps, isize);
+
+ /* configure image size and pixel format */
+ err = mt9p012_write_regs(client, mt9p012_reg_init[fps_index][isize]);
+ if (err)
+ return err;
+
+ /* configure frame rate */
+ err = mt9p012_calc_pll(isize, xclk_current, sensor);
+ if (err)
+ return err;
+
+ /* configure streaming ON */
+ err = mt9p012_write_regs(client, stream_on_list);
+
+ return err;
+}
+
+/**
+ * mt9p012_detect - Detect if an mt9p012 is present, and if so which revision
+ * @client: pointer to the i2c client driver structure
+ *
+ * Detect if an mt9p012 is present, and if so which revision.
+ * A device is considered to be detected if the manufacturer ID (MIDH and MIDL)
+ * and the product ID (PID) registers match the expected values.
+ * Any value of the version ID (VER) register is accepted.
+ * Here are the version numbers we know about:
+ * 0x48 --> mt9p012 Revision 1 or mt9p012 Revision 2
+ * 0x49 --> mt9p012 Revision 3
+ * Returns a negative error number if no device is detected, or the
+ * non-negative value of the version ID register if a device is detected.
+ */
+static int
+mt9p012_detect(struct i2c_client *client)
+{
+ u32 model_id, mfr_id, rev;
+
+ if (!client)
+ return -ENODEV;
+
+ if (mt9p012_read_reg(client, MT9P012_16BIT, REG_MODEL_ID, &model_id))
+ return -ENODEV;
+ if (mt9p012_read_reg(client, MT9P012_8BIT, REG_MANUFACTURER_ID,
+ &mfr_id))
+ return -ENODEV;
+ if (mt9p012_read_reg(client, MT9P012_8BIT, REG_REVISION_NUMBER, &rev))
+ return -ENODEV;
+
+ dev_info(&client->dev, "model id detected 0x%x mfr 0x%x\n", model_id,
+ mfr_id);
+ if ((model_id != MT9P012_MOD_ID) || (mfr_id != MT9P012_MFR_ID)) {
+ /* We didn't read the values we expected, so
+ * this must not be an MT9P012.
+ */
+ dev_warn(&client->dev, "model id mismatch 0x%x mfr 0x%x\n",
+ model_id, mfr_id);
+
+ return -ENODEV;
+ }
+ return 0;
+
+}
+
+/**
+ * mt9p012sensor_set_exposure_time - sets exposure time per input value
+ * @exp_time: exposure time to be set on device
+ * @s: pointer to standard V4L2 device structure
+ * @lvc: pointer to V4L2 exposure entry in video_controls array
+ *
+ * If the requested exposure time is within the allowed limits, the HW
+ * is configured to use the new exposure time, and the video_controls
+ * array is updated with the new current value.
+ * The function returns 0 upon success. Otherwise an error code is
+ * returned.
+ */
+int
+mt9p012sensor_set_exposure_time(u32 exp_time, struct v4l2_int_device *s,
+ struct vcontrol *lvc)
+{
+ int err;
+ struct mt9p012_sensor *sensor = s->priv;
+ struct i2c_client *client = sensor->i2c_client;
+ u32 coarse_int_time = 0;
+
+ if ((exp_time < min_exposure_time) ||
+ (exp_time > max_exposure_time)) {
+ dev_err(&client->dev, "Exposure time not within the "
+ "legal range.\n");
+ dev_err(&client->dev, "Min time %d us Max time %d us",
+ min_exposure_time, max_exposure_time);
+ return -EINVAL;
+ }
+ coarse_int_time = ((((exp_time / 10) * (pix_clk_freq / 1000)) / 1000) -
+ (all_pll_settings[current_pll_video].fine_int_tm / 10)) /
+ (all_pll_settings[current_pll_video].line_len / 10);
+
+ dev_dbg(&client->dev, "coarse_int_time calculated = %d\n",
+ coarse_int_time);
+
+ set_exposure_time[COARSE_INT_TIME_INDEX].val = coarse_int_time;
+ err = mt9p012_write_regs(client, set_exposure_time);
+
+ if (err)
+ dev_err(&client->dev, "Error setting exposure time %d\n",
+ err);
+ else
+ lvc->current_value = exp_time;
+
+ return err;
+}
+
+/**
+ * mt9p012sensor_set_gain - sets sensor analog gain per input value
+ * @gain: analog gain value to be set on device
+ * @s: pointer to standard V4L2 device structure
+ * @lvc: pointer to V4L2 analog gain entry in video_controls array
+ *
+ * If the requested analog gain is within the allowed limits, the HW
+ * is configured to use the new gain value, and the video_controls
+ * array is updated with the new current value.
+ * The function returns 0 upon success. Otherwise an error code is
+ * returned.
+ */
+int
+mt9p012sensor_set_gain(u16 gain, struct v4l2_int_device *s,
+ struct vcontrol *lvc)
+{
+ int err;
+ struct mt9p012_sensor *sensor = s->priv;
+ struct i2c_client *client = sensor->i2c_client;
+
+ if ((gain < MIN_GAIN) || (gain > MAX_GAIN)) {
+ dev_err(&client->dev, "Gain not within the legal range");
+ return -EINVAL;
+ }
+ set_analog_gain[GAIN_INDEX].val = gain;
+ err = mt9p012_write_regs(client, set_analog_gain);
+ if (err) {
+ dev_err(&client->dev, "Error setting gain.%d", err);
+ return err;
+ } else
+ lvc->current_value = gain;
+
+ return err;
+}
+
+/**
+ * ioctl_queryctrl - V4L2 sensor interface handler for VIDIOC_QUERYCTRL ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @qc: standard V4L2 VIDIOC_QUERYCTRL ioctl structure
+ *
+ * If the requested control is supported, returns the control information
+ * from the video_control[] array. Otherwise, returns -EINVAL if the
+ * control is not supported.
+ */
+static int ioctl_queryctrl(struct v4l2_int_device *s,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ i = find_vctrl(qc->id);
+ if (i == -EINVAL)
+ qc->flags = V4L2_CTRL_FLAG_DISABLED;
+
+ if (i < 0)
+ return -EINVAL;
+
+ *qc = video_control[i].qc;
+ return 0;
+}
+
+/**
+ * ioctl_g_ctrl - V4L2 sensor interface handler for VIDIOC_G_CTRL ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @vc: standard V4L2 VIDIOC_G_CTRL ioctl structure
+ *
+ * If the requested control is supported, returns the control's current
+ * value from the video_control[] array. Otherwise, returns -EINVAL
+ * if the control is not supported.
+ */
+static int ioctl_g_ctrl(struct v4l2_int_device *s,
+ struct v4l2_control *vc)
+{
+ struct vcontrol *lvc;
+ int i;
+
+ i = find_vctrl(vc->id);
+ if (i < 0)
+ return -EINVAL;
+ lvc = &video_control[i];
+
+ switch (vc->id) {
+ case V4L2_CID_EXPOSURE:
+ vc->value = lvc->current_value;
+ break;
+ case V4L2_CID_GAIN:
+ vc->value = lvc->current_value;
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ * ioctl_s_ctrl - V4L2 sensor interface handler for VIDIOC_S_CTRL ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @vc: standard V4L2 VIDIOC_S_CTRL ioctl structure
+ *
+ * If the requested control is supported, sets the control's current
+ * value in HW (and updates the video_control[] array). Otherwise,
+ * returns -EINVAL if the control is not supported.
+ */
+static int ioctl_s_ctrl(struct v4l2_int_device *s,
+ struct v4l2_control *vc)
+{
+ int retval = -EINVAL;
+ int i;
+ struct vcontrol *lvc;
+
+ i = find_vctrl(vc->id);
+ if (i < 0)
+ return -EINVAL;
+ lvc = &video_control[i];
+
+ switch (vc->id) {
+ case V4L2_CID_EXPOSURE:
+ retval = mt9p012sensor_set_exposure_time(vc->value, s, lvc);
+ break;
+ case V4L2_CID_GAIN:
+ retval = mt9p012sensor_set_gain(vc->value, s, lvc);
+ break;
+ }
+
+ return retval;
+}
+
+
+/**
+ * ioctl_enum_fmt_cap - Implement the CAPTURE buffer VIDIOC_ENUM_FMT ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @fmt: standard V4L2 VIDIOC_ENUM_FMT ioctl structure
+ *
+ * Implement the VIDIOC_ENUM_FMT ioctl for the CAPTURE buffer type.
+ */
+static int ioctl_enum_fmt_cap(struct v4l2_int_device *s,
+ struct v4l2_fmtdesc *fmt)
+{
+ int index = fmt->index;
+ enum v4l2_buf_type type = fmt->type;
+
+ memset(fmt, 0, sizeof(*fmt));
+ fmt->index = index;
+ fmt->type = type;
+
+ switch (fmt->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (index >= NUM_CAPTURE_FORMATS)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ fmt->flags = mt9p012_formats[index].flags;
+ strlcpy(fmt->description, mt9p012_formats[index].description,
+ sizeof(fmt->description));
+ fmt->pixelformat = mt9p012_formats[index].pixelformat;
+
+ return 0;
+}
+
+/**
+ * ioctl_try_fmt_cap - Implement the CAPTURE buffer VIDIOC_TRY_FMT ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @f: pointer to standard V4L2 VIDIOC_TRY_FMT ioctl structure
+ *
+ * Implement the VIDIOC_TRY_FMT ioctl for the CAPTURE buffer type. This
+ * ioctl is used to negotiate the image capture size and pixel format
+ * without actually making it take effect.
+ */
+static int ioctl_try_fmt_cap(struct v4l2_int_device *s,
+ struct v4l2_format *f)
+{
+ enum image_size isize;
+ int ifmt;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct mt9p012_sensor *sensor = s->priv;
+ struct v4l2_pix_format *pix2 = &sensor->pix;
+
+ isize = mt9p012_calc_size(pix->width, pix->height);
+
+ pix->width = mt9p012_sizes[isize].width;
+ pix->height = mt9p012_sizes[isize].height;
+ for (ifmt = 0; ifmt < NUM_CAPTURE_FORMATS; ifmt++) {
+ if (pix->pixelformat == mt9p012_formats[ifmt].pixelformat)
+ break;
+ }
+ if (ifmt == NUM_CAPTURE_FORMATS)
+ ifmt = 0;
+ pix->pixelformat = mt9p012_formats[ifmt].pixelformat;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = pix->width * 2;
+ pix->sizeimage = pix->bytesperline * pix->height;
+ pix->priv = 0;
+ switch (pix->pixelformat) {
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ pix->colorspace = V4L2_COLORSPACE_JPEG;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB565X:
+ case V4L2_PIX_FMT_RGB555:
+ case V4L2_PIX_FMT_SGRBG10:
+ case V4L2_PIX_FMT_RGB555X:
+ default:
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ break;
+ }
+ *pix2 = *pix;
+ return 0;
+}
+
+/**
+ * ioctl_s_fmt_cap - V4L2 sensor interface handler for VIDIOC_S_FMT ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @f: pointer to standard V4L2 VIDIOC_S_FMT ioctl structure
+ *
+ * If the requested format is supported, configures the HW to use that
+ * format, returns error code if format not supported or HW can't be
+ * correctly configured.
+ */
+static int ioctl_s_fmt_cap(struct v4l2_int_device *s,
+ struct v4l2_format *f)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ int rval;
+
+ rval = ioctl_try_fmt_cap(s, f);
+ if (!rval)
+ sensor->pix = *pix;
+
+ return rval;
+}
+
+/**
+ * ioctl_g_fmt_cap - V4L2 sensor interface handler for ioctl_g_fmt_cap
+ * @s: pointer to standard V4L2 device structure
+ * @f: pointer to standard V4L2 v4l2_format structure
+ *
+ * Returns the sensor's current pixel format in the v4l2_format
+ * parameter.
+ */
+static int ioctl_g_fmt_cap(struct v4l2_int_device *s,
+ struct v4l2_format *f)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+ f->fmt.pix = sensor->pix;
+
+ return 0;
+}
+
+/**
+ * ioctl_g_parm - V4L2 sensor interface handler for VIDIOC_G_PARM ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @a: pointer to standard V4L2 VIDIOC_G_PARM ioctl structure
+ *
+ * Returns the sensor's video CAPTURE parameters.
+ */
+static int ioctl_g_parm(struct v4l2_int_device *s,
+ struct v4l2_streamparm *a)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+ struct v4l2_captureparm *cparm = &a->parm.capture;
+
+ if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ memset(a, 0, sizeof(*a));
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ cparm->capability = V4L2_CAP_TIMEPERFRAME;
+ cparm->timeperframe = sensor->timeperframe;
+
+ return 0;
+}
+
+/**
+ * ioctl_s_parm - V4L2 sensor interface handler for VIDIOC_S_PARM ioctl
+ * @s: pointer to standard V4L2 device structure
+ * @a: pointer to standard V4L2 VIDIOC_S_PARM ioctl structure
+ *
+ * Configures the sensor to use the input parameters, if possible. If
+ * not possible, reverts to the old parameters and returns the
+ * appropriate error code.
+ */
+static int ioctl_s_parm(struct v4l2_int_device *s,
+ struct v4l2_streamparm *a)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+ struct i2c_client *client = sensor->i2c_client;
+ struct v4l2_fract *timeperframe = &a->parm.capture.timeperframe;
+
+ sensor->timeperframe = *timeperframe;
+ mt9p012sensor_calc_xclk(client);
+ *timeperframe = sensor->timeperframe;
+
+ return 0;
+}
+
+/**
+ * ioctl_g_priv - V4L2 sensor interface handler for vidioc_int_g_priv_num
+ * @s: pointer to standard V4L2 device structure
+ * @p: void pointer to hold sensor's private data address
+ *
+ * Returns device's (sensor's) private data area address in p parameter
+ */
+static int ioctl_g_priv(struct v4l2_int_device *s, void *p)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+
+ return sensor->pdata->priv_data_set(p);
+}
+
+/**
+ * ioctl_s_power - V4L2 sensor interface handler for vidioc_int_s_power_num
+ * @s: pointer to standard V4L2 device structure
+ * @on: power state to which device is to be set
+ *
+ * Sets devices power state to requrested state, if possible.
+ */
+static int ioctl_s_power(struct v4l2_int_device *s, enum v4l2_power on)
+{
+ struct mt9p012_sensor *sensor = s->priv;
+ struct i2c_client *c = sensor->i2c_client;
+ int rval;
+
+ if ((on == V4L2_POWER_STANDBY) && (sensor->state == SENSOR_DETECTED))
+ mt9p012_write_regs(c, stream_off_list);
+
+ if (on != V4L2_POWER_ON)
+ sensor->pdata->set_xclk(0);
+ else
+ sensor->pdata->set_xclk(xclk_current);
+
+ rval = sensor->pdata->power_set(on);
+ if (rval < 0) {
+ dev_err(&c->dev, "Unable to set the power state: " DRIVER_NAME
+ " sensor\n");
+ sensor->pdata->set_xclk(0);
+ return rval;
+ }
+
+ if ((on == V4L2_POWER_ON) && (sensor->state == SENSOR_DETECTED))
+ mt9p012_configure(s);
+
+ if ((on == V4L2_POWER_ON) && (sensor->state == SENSOR_NOT_DETECTED)) {
+ rval = mt9p012_detect(c);
+ if (rval < 0) {
+ dev_err(&c->dev, "Unable to detect " DRIVER_NAME
+ " sensor\n");
+ sensor->state = SENSOR_NOT_DETECTED;
+ return rval;
+ }
+ sensor->state = SENSOR_DETECTED;
+ sensor->ver = rval;
+ pr_info(DRIVER_NAME " chip version 0x%02x detected\n",
+ sensor->ver);
+ }
+
+ return 0;
+}
+
+/**
+ * ioctl_init - V4L2 sensor interface handler for VIDIOC_INT_INIT
+ * @s: pointer to standard V4L2 device structure
+ *
+ * Initialize the sensor device (call mt9p012_configure())
+ */
+static int ioctl_init(struct v4l2_int_device *s)
+{
+ return 0;
+}
+
+/**
+ * ioctl_dev_exit - V4L2 sensor interface handler for vidioc_int_dev_exit_num
+ * @s: pointer to standard V4L2 device structure
+ *
+ * Delinitialise the dev. at slave detach. The complement of ioctl_dev_init.
+ */
+static int ioctl_dev_exit(struct v4l2_int_device *s)
+{
+ return 0;
+}
+
+/**
+ * ioctl_dev_init - V4L2 sensor interface handler for vidioc_int_dev_init_num
+ * @s: pointer to standard V4L2 device structure
+ *
+ * Initialise the device when slave attaches to the master. Returns 0 if
+ * mt9p012 device could be found, otherwise returns appropriate error.
+ */
+static int ioctl_dev_init(struct v4l2_int_device *s)
+{
+ return 0;
+}
+/**
+ * ioctl_enum_framesizes - V4L2 sensor if handler for vidioc_int_enum_framesizes
+ * @s: pointer to standard V4L2 device structure
+ * @frms: pointer to standard V4L2 framesizes enumeration structure
+ *
+ * Returns possible framesizes depending on choosen pixel format
+ **/
+static int ioctl_enum_framesizes(struct v4l2_int_device *s,
+ struct v4l2_frmsizeenum *frms)
+{
+ int ifmt;
+
+ for (ifmt = 0; ifmt < NUM_CAPTURE_FORMATS; ifmt++) {
+ if (frms->pixel_format == mt9p012_formats[ifmt].pixelformat)
+ break;
+ }
+ /* Is requested pixelformat not found on sensor? */
+ if (ifmt == NUM_CAPTURE_FORMATS)
+ return -EINVAL;
+
+ /* Do we already reached all discrete framesizes? */
+ if (frms->index >= 5)
+ return -EINVAL;
+
+ frms->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ frms->discrete.width = mt9p012_sizes[frms->index].width;
+ frms->discrete.height = mt9p012_sizes[frms->index].height;
+
+ return 0;
+}
+
+const struct v4l2_fract mt9p012_frameintervals[] = {
+ { .numerator = 1, .denominator = 11 },
+ { .numerator = 1, .denominator = 15 },
+ { .numerator = 1, .denominator = 20 },
+ { .numerator = 1, .denominator = 25 },
+ { .numerator = 1, .denominator = 30 },
+};
+
+static int ioctl_enum_frameintervals(struct v4l2_int_device *s,
+ struct v4l2_frmivalenum *frmi)
+{
+ int ifmt;
+
+ for (ifmt = 0; ifmt < NUM_CAPTURE_FORMATS; ifmt++) {
+ if (frmi->pixel_format == mt9p012_formats[ifmt].pixelformat)
+ break;
+ }
+ /* Is requested pixelformat not found on sensor? */
+ if (ifmt == NUM_CAPTURE_FORMATS)
+ return -EINVAL;
+
+ /* Do we already reached all discrete framesizes? */
+
+ if (((frmi->width == mt9p012_sizes[4].width) &&
+ (frmi->height == mt9p012_sizes[4].height)) ||
+ ((frmi->width == mt9p012_sizes[3].width) &&
+ (frmi->height == mt9p012_sizes[3].height))) {
+ /* FIXME: The only frameinterval supported by 5MP and 3MP
+ * capture sizes is 1/11 fps
+ */
+ if (frmi->index != 0)
+ return -EINVAL;
+ } else {
+ if (frmi->index >= 5)
+ return -EINVAL;
+ }
+
+ frmi->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ frmi->discrete.numerator =
+ mt9p012_frameintervals[frmi->index].numerator;
+ frmi->discrete.denominator =
+ mt9p012_frameintervals[frmi->index].denominator;
+
+ return 0;
+}
+
+static struct v4l2_int_ioctl_desc mt9p012_ioctl_desc[] = {
+ { .num = vidioc_int_enum_framesizes_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_enum_framesizes },
+ { .num = vidioc_int_enum_frameintervals_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_enum_frameintervals },
+ { .num = vidioc_int_dev_init_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_dev_init },
+ { .num = vidioc_int_dev_exit_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_dev_exit },
+ { .num = vidioc_int_s_power_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_s_power },
+ { .num = vidioc_int_g_priv_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_g_priv },
+ { .num = vidioc_int_init_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_init },
+ { .num = vidioc_int_enum_fmt_cap_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_enum_fmt_cap },
+ { .num = vidioc_int_try_fmt_cap_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_try_fmt_cap },
+ { .num = vidioc_int_g_fmt_cap_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_g_fmt_cap },
+ { .num = vidioc_int_s_fmt_cap_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_s_fmt_cap },
+ { .num = vidioc_int_g_parm_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_g_parm },
+ { .num = vidioc_int_s_parm_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_s_parm },
+ { .num = vidioc_int_queryctrl_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_queryctrl },
+ { .num = vidioc_int_g_ctrl_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_g_ctrl },
+ { .num = vidioc_int_s_ctrl_num,
+ .func = (v4l2_int_ioctl_func *)ioctl_s_ctrl },
+};
+
+static struct v4l2_int_slave mt9p012_slave = {
+ .ioctls = mt9p012_ioctl_desc,
+ .num_ioctls = ARRAY_SIZE(mt9p012_ioctl_desc),
+};
+
+static struct v4l2_int_device mt9p012_int_device = {
+ .module = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .priv = &mt9p012,
+ .type = v4l2_int_type_slave,
+ .u = {
+ .slave = &mt9p012_slave,
+ },
+};
+
+/**
+ * mt9p012_probe - sensor driver i2c probe handler
+ * @client: i2c driver client device structure
+ *
+ * Register sensor as an i2c client device and V4L2
+ * device.
+ */
+static int
+mt9p012_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct mt9p012_sensor *sensor = &mt9p012;
+ int err;
+
+ if (i2c_get_clientdata(client))
+ return -EBUSY;
+
+ sensor->pdata = client->dev.platform_data;
+
+ if (!sensor->pdata) {
+ dev_err(&client->dev, "no platform data?\n");
+ return -ENODEV;
+ }
+
+ sensor->v4l2_int_device = &mt9p012_int_device;
+ sensor->i2c_client = client;
+
+ i2c_set_clientdata(client, sensor);
+
+ /* Make the default capture format QCIF V4L2_PIX_FMT_SGRBG10 */
+ sensor->pix.width = MT9P012_VIDEO_WIDTH_4X_BINN_SCALED;
+ sensor->pix.height = MT9P012_VIDEO_WIDTH_4X_BINN_SCALED;
+ sensor->pix.pixelformat = V4L2_PIX_FMT_SGRBG10;
+
+ err = v4l2_int_device_register(sensor->v4l2_int_device);
+ if (err)
+ i2c_set_clientdata(client, NULL);
+
+ return err;
+}
+
+/**
+ * mt9p012_remove - sensor driver i2c remove handler
+ * @client: i2c driver client device structure
+ *
+ * Unregister sensor as an i2c client device and V4L2
+ * device. Complement of mt9p012_probe().
+ */
+static int __exit
+mt9p012_remove(struct i2c_client *client)
+{
+ struct mt9p012_sensor *sensor = i2c_get_clientdata(client);
+
+ if (!client->adapter)
+ return -ENODEV; /* our client isn't attached */
+
+ v4l2_int_device_unregister(sensor->v4l2_int_device);
+ i2c_set_clientdata(client, NULL);
+
+ return 0;
+}
+
+static const struct i2c_device_id mt9p012_id[] = {
+ { DRIVER_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, mt9p012_id);
+
+static struct i2c_driver mt9p012sensor_i2c_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = mt9p012_probe,
+ .remove = __exit_p(mt9p012_remove),
+ .id_table = mt9p012_id,
+};
+
+static struct mt9p012_sensor mt9p012 = {
+ .timeperframe = {
+ .numerator = 1,
+ .denominator = 15,
+ },
+ .state = SENSOR_NOT_DETECTED,
+};
+
+/**
+ * mt9p012sensor_init - sensor driver module_init handler
+ *
+ * Registers driver as an i2c client driver. Returns 0 on success,
+ * error code otherwise.
+ */
+static int __init mt9p012sensor_init(void)
+{
+ return i2c_add_driver(&mt9p012sensor_i2c_driver);
+}
+module_init(mt9p012sensor_init);
+
+/**
+ * mt9p012sensor_cleanup - sensor driver module_exit handler
+ *
+ * Unregisters/deletes driver as an i2c client driver.
+ * Complement of mt9p012sensor_init.
+ */
+static void __exit mt9p012sensor_cleanup(void)
+{
+ i2c_del_driver(&mt9p012sensor_i2c_driver);
+}
+module_exit(mt9p012sensor_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("mt9p012 camera sensor driver");
diff --git a/drivers/media/video/mt9p012_regs.h b/drivers/media/video/mt9p012_regs.h
new file mode 100644
index 0000000..70f6ee7
--- /dev/null
+++ b/drivers/media/video/mt9p012_regs.h
@@ -0,0 +1,74 @@
+/*
+ * drivers/media/video/mt9p012_regs.h
+ *
+ * Register definitions for the MT9P012 camera sensor.
+ *
+ * Author:
+ * Sameer Venkatraman <sameerv@xxxxxx>
+ * Sergio Aguirre <saaguirre@xxxxxx>
+ * Martinez Leonides
+ *
+ *
+ * Copyright (C) 2008 Texas Instruments.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#define REG_MODEL_ID 0x0000
+#define REG_REVISION_NUMBER 0x0002
+#define REG_MANUFACTURER_ID 0x0003
+
+#define REG_MODE_SELECT 0x0100
+#define REG_IMAGE_ORIENTATION 0x0101
+#define REG_SOFTWARE_RESET 0x0103
+#define REG_GROUPED_PAR_HOLD 0x0104
+
+#define REG_FINE_INT_TIME 0x0200
+#define REG_COARSE_INT_TIME 0x0202
+
+#define REG_ANALOG_GAIN_GLOBAL 0x0204
+#define REG_ANALOG_GAIN_GREENR 0x0206
+#define REG_ANALOG_GAIN_RED 0x0208
+#define REG_ANALOG_GAIN_BLUE 0x020A
+#define REG_ANALOG_GAIN_GREENB 0x020C
+#define REG_DIGITAL_GAIN_GREENR 0x020E
+#define REG_DIGITAL_GAIN_RED 0x0210
+#define REG_DIGITAL_GAIN_BLUE 0x0212
+#define REG_DIGITAL_GAIN_GREENB 0x0214
+
+#define REG_VT_PIX_CLK_DIV 0x0300
+#define REG_VT_SYS_CLK_DIV 0x0302
+#define REG_PRE_PLL_CLK_DIV 0x0304
+#define REG_PLL_MULTIPLIER 0x0306
+#define REG_OP_PIX_CLK_DIV 0x0308
+#define REG_OP_SYS_CLK_DIV 0x030A
+
+#define REG_FRAME_LEN_LINES 0x0340
+#define REG_LINE_LEN_PCK 0x0342
+
+#define REG_X_ADDR_START 0x0344
+#define REG_Y_ADDR_START 0x0346
+#define REG_X_ADDR_END 0x0348
+#define REG_Y_ADDR_END 0x034A
+#define REG_X_OUTPUT_SIZE 0x034C
+#define REG_Y_OUTPUT_SIZE 0x034E
+#define REG_X_ODD_INC 0x0382
+#define REG_Y_ODD_INC 0x0386
+
+#define REG_SCALING_MODE 0x0400
+#define REG_SCALE_M 0x0404
+#define REG_SCALE_N 0x0406
+
+#define REG_ROW_SPEED 0x3016
+#define REG_RESET_REGISTER 0x301A
+#define REG_PIXEL_ORDER 0x3024
+#define REG_READ_MODE 0x3040
+
+#define REG_DATAPATH_STATUS 0x306A
+#define REG_DATAPATH_SELECT 0x306E
+
+#define REG_RESERVED_MFR_3064 0x3064
+#define REG_TEST_PATTERN 0x3070
+
diff --git a/include/media/mt9p012.h b/include/media/mt9p012.h
new file mode 100644
index 0000000..13a9745
--- /dev/null
+++ b/include/media/mt9p012.h
@@ -0,0 +1,37 @@
+/*
+ * drivers/media/video/mt9p012.h
+ *
+ * Register definitions for the MT9P012 camera sensor.
+ *
+ * Author:
+ * Sameer Venkatraman <sameerv@xxxxxx>
+ * Martinez Leonides
+ *
+ *
+ * Copyright (C) 2008 Texas Instruments.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef MT9P012_H
+#define MT9P012_H
+
+
+#define MT9P012_I2C_ADDR 0x10
+
+/**
+ * struct mt9p012_platform_data - platform data values and access functions
+ * @power_set: Power state access function, zero is off, non-zero is on.
+ * @default_regs: Default registers written after power-on or reset.
+ * @ifparm: Interface parameters access function
+ * @priv_data_set: device private data (pointer) access function
+ */
+struct mt9p012_platform_data {
+ int (*power_set)(enum v4l2_power power);
+ u32 (*set_xclk)(u32 xclkfreq);
+ int (*priv_data_set)(void *);
+};
+
+#endif /* ifndef MT9P012_H */
--
1.5.6.5
--
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