From patchwork Tue Jan 13 02:03:36 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aguirre Rodriguez, Sergio Alberto" X-Patchwork-Id: 2062 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n0D20Vgf016490 for ; Mon, 12 Jan 2009 18:00:35 -0800 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754510AbZAMCEe (ORCPT ); Mon, 12 Jan 2009 21:04:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752385AbZAMCEe (ORCPT ); Mon, 12 Jan 2009 21:04:34 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:39921 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755258AbZAMCEB convert rfc822-to-8bit (ORCPT ); Mon, 12 Jan 2009 21:04:01 -0500 Received: from dlep95.itg.ti.com ([157.170.170.107]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id n0D23cHR014729; Mon, 12 Jan 2009 20:03:43 -0600 Received: from dlee74.ent.ti.com (localhost [127.0.0.1]) by dlep95.itg.ti.com (8.13.8/8.13.8) with ESMTP id n0D23cDO008817; Mon, 12 Jan 2009 20:03:38 -0600 (CST) Received: from dlee02.ent.ti.com ([157.170.170.17]) by dlee74.ent.ti.com ([157.170.170.8]) with mapi; Mon, 12 Jan 2009 20:03:38 -0600 From: "Aguirre Rodriguez, Sergio Alberto" To: "linux-omap@vger.kernel.org" CC: "linux-media@vger.kernel.org" , "video4linux-list@redhat.com" , Sakari Ailus , "Tuukka.O Toivonen" , "Nagalla, Hari" Date: Mon, 12 Jan 2009 20:03:36 -0600 Subject: [REVIEW PATCH 12/14] OMAP: CAM: Add MT9P012 Sensor Driver Thread-Topic: [REVIEW PATCH 12/14] OMAP: CAM: Add MT9P012 Sensor Driver Thread-Index: Acl1IyVBI6XbLZ38TkSm3D5nFNEGqA== Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This adds the Micron MT9P012 sensor driver Signed-off-by: Sergio Aguirre --- 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 -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html 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 + * Sergio Aguirre + * 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 +#include +#include + +#include +#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 + * Sergio Aguirre + * 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 + * 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 */