Dne Po 14. září 2009 16:35:24 Marek Vasut napsal(a): > Dne Ne 13. září 2009 21:13:32 Guennadi Liakhovetski napsal(a): > > On Sun, 13 Sep 2009, Marek Vasut wrote: > > > Dne Pá 11. zářà 2009 23:51:44 Guennadi Liakhovetski napsal(a): > > > > Ok, a couple more simple questions / remarks, In principle, there's > > > > just one principle objection - if we agree, that the correct format > > > > is BGR565 and RGB565X, then we should change that. There's no BGR565 > > > > format currently in the kernel, so, we'd have to add it (and the > > > > documentation for the mercurial tree). > > > > > > I dont think I understand you at all. > > > > Your patch used RGB565X, which is the same as RGB565 but with _bytes_ > > swapped, whereas earlier you confirmed, that it's not a byte-swapped > > RGB565 but rather R and B _colours_ are swapped: > > > > http://marc.info/?l=linux-arm-kernel&m=125220918005429&w=2 > > > > , i.e., it is a BGR565. Now it looks like you don't change anything in > > your RGB processing code, but you declare it as plain RGB555 and RGB565 > > codes. So, are these really the normal unswapped formats or am I missing > > something? And you replaced VYUY with UYVY while also modifying register > > configuration, so, I hope, this has settled now and your current > > configuration works properly with the unmodified pxa270 for you, right? > > > > Oh, damn, I see now, I put my signature above the patch, so, you didn't > > look below it, and there were a couple more comments there:-( Sorry! All > > of them should be pretty easy to fix, so, please have a look at them. > > > > > Inlined is a new version of the patch (I did some lookup through the > > > datasheet). I might not need the BGR formats for now. > > > > > > btw. weren't you planning to merge the ov96xx drivers into .31? I > > > havent seen any of them there. > > > > Which ov96xx drivers? Do you mean the ov9655 driver from Stefan > > Herbrechtsmeier? My doubt with the latter one was (and still is), that we > > already have two drivers in the mainline (gspca/sn9c20x.c and > > gspca/ov534.c) that seem to claim support for that chip, so, I wanted to > > see, if we could reuse them. There's also an ov7670 from Jonathan Cameron > > with the same issue. And for that merge we have to come closer to > > v4l2-subdev, which is happening just now. > > > > Thanks > > Guennadi > > --- > > Guennadi Liakhovetski, Ph.D. > > Freelance Open-Source Software Developer > > http://www.open-technology.de/ > > Here's a new patch ... YUV works, RGB might be still broken (but that can > be fixed later when imagebus arrives). Tab fixed... From: Marek Vasut <marek.vasut@xxxxxxxxx> Date: Sat, 22 Aug 2009 05:14:23 +0200 Subject: [PATCH] Add driver for OmniVision OV9640 sensor Signed-off-by: Marek Vasut <marek.vasut@xxxxxxxxx> --- drivers/media/video/Kconfig | 6 + drivers/media/video/Makefile | 1 + drivers/media/video/ov9640.c | 812 +++++++++++++++++++++++++++++++++++++++ drivers/media/video/ov9640.h | 209 ++++++++++ include/media/v4l2-chip-ident.h | 1 + 5 files changed, 1029 insertions(+), 0 deletions(-) create mode 100644 drivers/media/video/ov9640.c create mode 100644 drivers/media/video/ov9640.h diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index 84b6fc1..fddd654 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -772,6 +772,12 @@ config SOC_CAMERA_OV772X help This is a ov772x camera driver +config SOC_CAMERA_OV9640 + tristate "ov9640 camera support" + depends on SOC_CAMERA && I2C + help + This is a ov9640 camera driver + config MX1_VIDEO bool diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index 9f2e321..e18efd5 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o obj-$(CONFIG_SOC_CAMERA_OV772X) += ov772x.o +obj-$(CONFIG_SOC_CAMERA_OV9640) += ov9640.o obj-$(CONFIG_SOC_CAMERA_TW9910) += tw9910.o # And now the v4l2 drivers: diff --git a/drivers/media/video/ov9640.c b/drivers/media/video/ov9640.c new file mode 100644 index 0000000..a651d2b --- /dev/null +++ b/drivers/media/video/ov9640.c @@ -0,0 +1,812 @@ +/* + * OmniVision OV96xx Camera Driver + * + * Copyright (C) 2009 Marek Vasut <marek.vasut@xxxxxxxxx> + * + * Based on ov772x camera driver: + * + * Copyright (C) 2008 Renesas Solutions Corp. + * Kuninori Morimoto <morimoto.kuninori@xxxxxxxxxxx> + * + * Based on ov7670 and soc_camera_platform driver, + * + * Copyright 2006-7 Jonathan Corbet <corbet@xxxxxxx> + * Copyright (C) 2008 Magnus Damm + * Copyright (C) 2008, Guennadi Liakhovetski <kernel@xxxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/videodev2.h> +#include <media/v4l2-chip-ident.h> +#include <media/v4l2-common.h> +#include <media/soc_camera.h> + +#include "ov9640.h" + +/* default register setup */ +static const struct ov9640_reg ov9640_regs_dflt[] = { + { OV9640_COM5, OV9640_COM5_SYSCLK | OV9640_COM5_LONGEXP }, + { OV9640_COM6, OV9640_COM6_OPT_BLC | OV9640_COM6_ADBLC_BIAS | + OV9640_COM6_FMT_RST | OV9640_COM6_ADBLC_OPTEN }, + { OV9640_PSHFT, OV9640_PSHFT_VAL(0x01) }, + { OV9640_ACOM, OV9640_ACOM_2X_ANALOG | OV9640_ACOM_RSVD }, + { OV9640_TSLB, OV9640_TSLB_YUYV_UYVY }, + { OV9640_COM16, OV9640_COM16_RB_AVG }, + + /* Gamma curve P */ + { 0x6c, 0x40 }, { 0x6d, 0x30 }, { 0x6e, 0x4b }, { 0x6f, 0x60 }, + { 0x70, 0x70 }, { 0x71, 0x70 }, { 0x72, 0x70 }, { 0x73, 0x70 }, + { 0x74, 0x60 }, { 0x75, 0x60 }, { 0x76, 0x50 }, { 0x77, 0x48 }, + { 0x78, 0x3a }, { 0x79, 0x2e }, { 0x7a, 0x28 }, { 0x7b, 0x22 }, + + /* Gamma curve T */ + { 0x7c, 0x04 }, { 0x7d, 0x07 }, { 0x7e, 0x10 }, { 0x7f, 0x28 }, + { 0x80, 0x36 }, { 0x81, 0x44 }, { 0x82, 0x52 }, { 0x83, 0x60 }, + { 0x84, 0x6c }, { 0x85, 0x78 }, { 0x86, 0x8c }, { 0x87, 0x9e }, + { 0x88, 0xbb }, { 0x89, 0xd2 }, { 0x8a, 0xe6 }, +}; + +/* Configurations + * NOTE: for YUV, alter the following registers: + * COM12 |= OV9640_COM12_YUV_AVG + * + * for RGB, alter the following registers: + * COM7 |= OV9640_COM7_RGB + * COM13 |= OV9640_COM13_RGB_AVG + * COM15 |= proper RGB color encoding mode + */ +static const struct ov9640_reg ov9640_regs_qqcif[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x0f) }, + { OV9640_COM1, OV9640_COM1_QQFMT | OV9640_COM1_HREF_2SKIP }, + { OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD }, + { OV9640_COM7, OV9640_COM7_QCIF }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_qqvga[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x07) }, + { OV9640_COM1, OV9640_COM1_QQFMT | OV9640_COM1_HREF_2SKIP }, + { OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD }, + { OV9640_COM7, OV9640_COM7_QVGA }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_qcif[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x07) }, + { OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD }, + { OV9640_COM7, OV9640_COM7_QCIF }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_qvga[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x03) }, + { OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD }, + { OV9640_COM7, OV9640_COM7_QVGA }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_cif[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x03) }, + { OV9640_COM3, OV9640_COM3_VP }, + { OV9640_COM7, OV9640_COM7_CIF }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_vga[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x01) }, + { OV9640_COM3, OV9640_COM3_VP }, + { OV9640_COM7, OV9640_COM7_VGA }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_sxga[] = { + { OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x01) }, + { OV9640_COM3, OV9640_COM3_VP }, + { OV9640_COM7, 0 }, + { OV9640_COM12, OV9640_COM12_RSVD }, + { OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN }, + { OV9640_COM15, OV9640_COM15_OR_10F0 }, +}; + +static const struct ov9640_reg ov9640_regs_yuv[] = { + { OV9640_MTX1, 0x58 }, + { OV9640_MTX2, 0x48 }, + { OV9640_MTX3, 0x10 }, + { OV9640_MTX4, 0x28 }, + { OV9640_MTX5, 0x48 }, + { OV9640_MTX6, 0x70 }, + { OV9640_MTX7, 0x40 }, + { OV9640_MTX8, 0x40 }, + { OV9640_MTX9, 0x40 }, + { OV9640_MTXS, 0x0f }, +}; + +static const struct ov9640_reg ov9640_regs_rgb[] = { + { OV9640_MTX1, 0x71 }, + { OV9640_MTX2, 0x3e }, + { OV9640_MTX3, 0x0c }, + { OV9640_MTX4, 0x33 }, + { OV9640_MTX5, 0x72 }, + { OV9640_MTX6, 0x00 }, + { OV9640_MTX7, 0x2b }, + { OV9640_MTX8, 0x66 }, + { OV9640_MTX9, 0xd2 }, + { OV9640_MTXS, 0x65 }, +}; + +/* NOTE: The RGB formats can still have issues */ +static const struct soc_camera_data_format ov9640_fmt_lists[] = { + { + .name = "UYVY", + .fourcc = V4L2_PIX_FMT_UYVY, + .depth = 16, + .colorspace = V4L2_COLORSPACE_JPEG, + }, + { + .name = "RGB555", + .fourcc = V4L2_PIX_FMT_RGB555, + .depth = 15, + .colorspace = V4L2_COLORSPACE_SRGB, + }, + { + .name = "RGB565", + .fourcc = V4L2_PIX_FMT_RGB565, + .depth = 16, + .colorspace = V4L2_COLORSPACE_SRGB, + } +}; + +static const struct v4l2_queryctrl ov9640_controls[] = { + { + .id = V4L2_CID_VFLIP, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "Flip Vertically", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 0, + }, + { + .id = V4L2_CID_HFLIP, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "Flip Horizontally", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 0, + }, +}; + +/* read a register */ +static int ov9640_reg_read(struct i2c_client *client, u8 reg, u8 *val) +{ + int ret; + u8 data = reg; + struct i2c_msg msg = { + .addr = client->addr, + .flags = 0, + .len = 1, + .buf = &data, + }; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) + goto err; + + msg.flags = I2C_M_RD; + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) + goto err; + + *val = data; + return 0; + +err: + dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg); + return ret; +} + +/* write a register */ +static int ov9640_reg_write(struct i2c_client *client, u8 reg, u8 val) +{ + int ret; + u8 _val; + unsigned char data[2] = { reg, val }; + struct i2c_msg msg = { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = data, + }; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) { + dev_err(&client->dev, "Failed writing register 0x%02x!\n", reg); + return ret; + } + + /* we have to read the register back ... no idea why, maybe HW bug */ + ret = ov9640_reg_read(client, reg, &_val); + if (ret) + dev_err(&client->dev, + "Failed reading back register 0x%02x!\n", reg); + + return 0; +} + + +/* Read a register, alter its bits, write it back */ +static int ov9640_reg_rmw(struct i2c_client *client, u8 reg, u8 set, u8 unset) +{ + u8 val; + int ret; + + ret = ov9640_reg_read(client, reg, &val); + if (ret) { + dev_err(&client->dev, + "[Read]-Modify-Write of register %02x failed!\n", reg); + return val; + } + + val |= set; + val &= ~unset; + + ret = ov9640_reg_write(client, reg, val); + if (ret) + dev_err(&client->dev, + "Read-Modify-[Write] of register %02x failed!\n", reg); + + return ret; +} + +/* Soft reset the camera. This has nothing to do with the RESET pin! */ +static int ov9640_reset(struct i2c_client *client) +{ + int ret; + + ret = ov9640_reg_write(client, OV9640_COM7, OV9640_COM7_SCCB_RESET); + if (ret) + dev_err(&client->dev, + "An error occured while entering soft reset!\n"); + + return ret; +} + +/* Start/Stop streaming from the device */ +static int ov9640_s_stream(struct v4l2_subdev *sd, int enable) +{ + return 0; +} + +/* Alter bus settings on camera side */ +static int ov9640_set_bus_param(struct soc_camera_device *icd, + unsigned long flags) +{ + return 0; +} + +/* Request bus settings on camera side */ +static unsigned long ov9640_query_bus_param(struct soc_camera_device *icd) +{ + struct soc_camera_link *icl = to_soc_camera_link(icd); + + /* + * REVISIT: the camera probably can do 10 bit transfers, but I don't + * have those pins connected on my hardware. + */ + unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER | + SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH | + SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8; + + return soc_camera_apply_sensor_flags(icl, flags); +} + +/* Get status of additional camera capabilities */ +static int ov9640_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +{ + struct i2c_client *client = sd->priv; + struct ov9640_priv *priv = container_of(i2c_get_clientdata(client), + struct ov9640_priv, subdev); + + switch (ctrl->id) { + case V4L2_CID_VFLIP: + ctrl->value = priv->flag_vflip; + break; + case V4L2_CID_HFLIP: + ctrl->value = priv->flag_hflip; + break; + } + return 0; +} + +/* Set status of additional camera capabilities */ +static int ov9640_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +{ + struct i2c_client *client = sd->priv; + struct ov9640_priv *priv = container_of(i2c_get_clientdata(client), + struct ov9640_priv, subdev); + + int ret = 0; + + switch (ctrl->id) { + case V4L2_CID_VFLIP: + priv->flag_vflip = ctrl->value; + if (ctrl->value) + ret = ov9640_reg_rmw(client, OV9640_MVFP, + OV9640_MVFP_V, 0); + else + ret = ov9640_reg_rmw(client, OV9640_MVFP, + 0, OV9640_MVFP_V); + break; + case V4L2_CID_HFLIP: + priv->flag_hflip = ctrl->value; + if (ctrl->value) + ret = ov9640_reg_rmw(client, OV9640_MVFP, + OV9640_MVFP_H, 0); + else + ret = ov9640_reg_rmw(client, OV9640_MVFP, + 0, OV9640_MVFP_H); + break; + } + + return ret; +} + +/* Get chip identification */ +static int ov9640_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *id) +{ + struct i2c_client *client = sd->priv; + struct ov9640_priv *priv = container_of(i2c_get_clientdata(client), + struct ov9640_priv, subdev); + + id->ident = priv->model; + id->revision = priv->revision; + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int ov9640_get_register(struct soc_camera_device *icd, + struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); + struct ov9640_priv *priv = i2c_get_clientdata(client); + + int ret; + u8 val; + + if (reg->reg & ~0xff) + return -EINVAL; + + reg->size = 1; + + ret = ov9640_read_reg(priv->client, reg->reg, &val); + if (ret) + return ret; + + reg->val = (__u64)val; + + return 0; +} + +static int ov9640_set_register(struct soc_camera_device *icd, + struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); + struct ov9640_priv *priv = i2c_get_clientdata(client); + + if (reg->reg & ~0xff || reg->val & ~0xff) + return -EINVAL; + + return ov9640_write_reg(priv->client, reg->reg, reg->val); +} +#endif + +/* select nearest higher resolution for capture */ +static void ov9640_res_roundup(u32 *width, u32 *height) +{ + int i; + enum { QQCIF, QQVGA, QCIF, QVGA, CIF, VGA, SXGA }; + int res_x[] = { 88, 160, 176, 320, 352, 640, 1280 }; + int res_y[] = { 72, 120, 144, 240, 288, 480, 960 }; + + for (i = 0; i < ARRAY_SIZE(res_x); i++) { + if (res_x[i] >= *width && res_y[i] >= *height) { + *width = res_x[i]; + *height = res_y[i]; + return; + } + } + + *width = res_x[SXGA]; + *height = res_y[SXGA]; +} + +/* Prepare necessary register changes depending on color encoding */ +static void ov9640_alter_regs(u32 pixfmt, struct ov9640_reg_alt *alt) +{ + switch (pixfmt) { + case V4L2_PIX_FMT_UYVY: + alt->com12 = OV9640_COM12_YUV_AVG; + alt->com13 = OV9640_COM13_Y_DELAY_EN | + OV9640_COM13_YUV_DLY(0x01); + break; + case V4L2_PIX_FMT_RGB555: + alt->com7 = OV9640_COM7_RGB; + alt->com13 = OV9640_COM13_RGB_AVG; + alt->com15 = OV9640_COM15_RGB_555; + break; + case V4L2_PIX_FMT_RGB565: + alt->com7 = OV9640_COM7_RGB; + alt->com13 = OV9640_COM13_RGB_AVG; + alt->com15 = OV9640_COM15_RGB_565; + break; + }; +} + +/* Setup registers according to resolution and color encoding */ +static int ov9640_write_regs(struct i2c_client *client, + u32 width, u32 pixfmt, struct ov9640_reg_alt *alts) +{ + const struct ov9640_reg *ov9640_regs, *matrix_regs; + int ov9640_regs_len, matrix_regs_len; + int i, ret; + u8 val; + + /* select register configuration for given resolution */ + switch (width) { + case W_QQCIF: + ov9640_regs = ov9640_regs_qqcif; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qqcif); + break; + case W_QQVGA: + ov9640_regs = ov9640_regs_qqvga; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qqvga); + break; + case W_QCIF: + ov9640_regs = ov9640_regs_qcif; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qcif); + break; + case W_QVGA: + ov9640_regs = ov9640_regs_qvga; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qvga); + break; + case W_CIF: + ov9640_regs = ov9640_regs_cif; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_cif); + break; + case W_VGA: + ov9640_regs = ov9640_regs_vga; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_vga); + break; + case W_SXGA: + ov9640_regs = ov9640_regs_sxga; + ov9640_regs_len = ARRAY_SIZE(ov9640_regs_sxga); + break; + default: + dev_err(&client->dev, "Failed to select resolution!\n"); + return -EINVAL; + } + + /* select color matrix configuration for given color encoding */ + if (pixfmt == V4L2_PIX_FMT_UYVY) { + matrix_regs = ov9640_regs_yuv; + matrix_regs_len = ARRAY_SIZE(ov9640_regs_yuv); + } else { + matrix_regs = ov9640_regs_rgb; + matrix_regs_len = ARRAY_SIZE(ov9640_regs_rgb); + } + + /* write register settings into the module */ + for (i = 0; i < ov9640_regs_len; i++) { + val = ov9640_regs[i].val; + + switch (ov9640_regs[i].reg) { + case OV9640_COM7: + val |= alts->com7; + break; + case OV9640_COM12: + val |= alts->com12; + break; + case OV9640_COM13: + val |= alts->com13; + break; + case OV9640_COM15: + val |= alts->com15; + break; + } + + ret = ov9640_reg_write(client, ov9640_regs[i].reg, val); + if (ret) + return ret; + } + + /* write color matrix configuration into the module */ + for (i = 0; i < matrix_regs_len; i++) { + ret = ov9640_reg_write(client, matrix_regs[i].reg, + matrix_regs[i].val); + if (ret) + return ret; + } + + return 0; +} + +/* program default register values */ +static int ov9640_prog_dflt(struct i2c_client *client) +{ + int i, ret; + + for (i = 0; i < ARRAY_SIZE(ov9640_regs_dflt); i++) { + ret = ov9640_reg_write(client, ov9640_regs_dflt[i].reg, + ov9640_regs_dflt[i].val); + if (ret) + return ret; + } + + /* wait for the changes to actually happen */ + mdelay(150); + + return 0; +} + +/* set the format we will capture in */ +static int ov9640_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) +{ + struct i2c_client *client = sd->priv; + struct v4l2_pix_format *pix = &f->fmt.pix; + struct ov9640_reg_alt alts = {0}; + int ret; + + ov9640_res_roundup(&pix->width, &pix->height); + ov9640_alter_regs(pix->pixelformat, &alts); + + ov9640_reset(client); + + ret = ov9640_prog_dflt(client); + if (ret) + return ret; + + return ov9640_write_regs(client, pix->width, pix->pixelformat, &alts); +} + +static int ov9640_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) +{ + struct v4l2_pix_format *pix = &f->fmt.pix; + + ov9640_res_roundup(&pix->width, &pix->height); + pix->field = V4L2_FIELD_NONE; + + return 0; +} + +static int ov9640_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + a->c.left = 0; + a->c.top = 0; + a->c.width = W_SXGA; + a->c.height = H_SXGA; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + return 0; +} + +static int ov9640_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) +{ + a->bounds.left = 0; + a->bounds.top = 0; + a->bounds.width = W_SXGA; + a->bounds.height = H_SXGA; + a->defrect = a->bounds; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + a->pixelaspect.numerator = 1; + a->pixelaspect.denominator = 1; + + return 0; +} + + + +static int ov9640_video_probe(struct soc_camera_device *icd, + struct i2c_client *client) +{ + struct ov9640_priv *priv = i2c_get_clientdata(client); + u8 pid, ver, midh, midl; + const char *devname; + int ret = 0; + + /* + * We must have a parent by now. And it cannot be a wrong one. + * So this entire test is completely redundant. + */ + if (!icd->dev.parent || + to_soc_camera_host(icd->dev.parent)->nr != icd->iface) { + dev_err(&client->dev, "Parent missing or invalid!\n"); + ret = -ENODEV; + goto err; + } + + icd->formats = ov9640_fmt_lists; + icd->num_formats = ARRAY_SIZE(ov9640_fmt_lists); + + /* + * check and show product ID and manufacturer ID + */ + + ret = ov9640_reg_read(client, OV9640_PID, &pid); + if (ret) + goto err; + + ret = ov9640_reg_read(client, OV9640_VER, &ver); + if (ret) + goto err; + + ret = ov9640_reg_read(client, OV9640_MIDH, &midh); + if (ret) + goto err; + + ret = ov9640_reg_read(client, OV9640_MIDL, &midl); + if (ret) + goto err; + + switch (VERSION(pid, ver)) { + case OV9640_V2: + devname = "ov9640"; + priv->model = V4L2_IDENT_OV9640; + priv->revision = 2; + case OV9640_V3: + devname = "ov9640"; + priv->model = V4L2_IDENT_OV9640; + priv->revision = 3; + break; + default: + dev_err(&client->dev, "Product ID error %x:%x\n", pid, ver); + ret = -ENODEV; + goto err; + } + + dev_info(&client->dev, "%s Product ID %0x:%0x Manufacturer ID %x:%x\n", + devname, pid, ver, midh, midl); + +err: + return ret; +} + +static struct soc_camera_ops ov9640_ops = { + .set_bus_param = ov9640_set_bus_param, + .query_bus_param = ov9640_query_bus_param, + .controls = ov9640_controls, + .num_controls = ARRAY_SIZE(ov9640_controls), +}; + +static struct v4l2_subdev_core_ops ov9640_core_ops = { + .g_ctrl = ov9640_g_ctrl, + .s_ctrl = ov9640_s_ctrl, + .g_chip_ident = ov9640_g_chip_ident, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = ov9640_get_register, + .s_register = ov9640_set_register, +#endif + +}; + +static struct v4l2_subdev_video_ops ov9640_video_ops = { + .s_stream = ov9640_s_stream, + .s_fmt = ov9640_s_fmt, + .try_fmt = ov9640_try_fmt, + .cropcap = ov9640_cropcap, + .g_crop = ov9640_g_crop, + +}; + +static struct v4l2_subdev_ops ov9640_subdev_ops = { + .core = &ov9640_core_ops, + .video = &ov9640_video_ops, +}; + +/* + * i2c_driver function + */ +static int ov9640_probe(struct i2c_client *client, + const struct i2c_device_id *did) +{ + struct ov9640_priv *priv; + struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct soc_camera_device *icd = client->dev.platform_data; + struct soc_camera_link *icl; + int ret; + + if (!icd) { + dev_err(&client->dev, "Missing soc-camera data!\n"); + return -EINVAL; + } + + icl = to_soc_camera_link(icd); + if (!icl) { + dev_err(&client->dev, "Missing platform_data for driver\n"); + return -EINVAL; + } + + priv = kzalloc(sizeof(struct ov9640_priv), GFP_KERNEL); + if (!priv) { + dev_err(&client->dev, + "Failed to allocate memory for private data!\n"); + return -ENOMEM; + } + + v4l2_i2c_subdev_init(&priv->subdev, client, &ov9640_subdev_ops); + + icd->ops = &ov9640_ops; + + ret = ov9640_video_probe(icd, client); + + if (ret) { + icd->ops = NULL; + i2c_set_clientdata(client, NULL); + kfree(priv); + } + + return ret; +} + +static int ov9640_remove(struct i2c_client *client) +{ + struct ov9640_priv *priv = i2c_get_clientdata(client); + + i2c_set_clientdata(client, NULL); + kfree(priv); + return 0; +} + +static const struct i2c_device_id ov9640_id[] = { + { "ov9640", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ov9640_id); + +static struct i2c_driver ov9640_i2c_driver = { + .driver = { + .name = "ov9640", + }, + .probe = ov9640_probe, + .remove = ov9640_remove, + .id_table = ov9640_id, +}; + +static int __init ov9640_module_init(void) +{ + return i2c_add_driver(&ov9640_i2c_driver); +} + +static void __exit ov9640_module_exit(void) +{ + i2c_del_driver(&ov9640_i2c_driver); +} + +module_init(ov9640_module_init); +module_exit(ov9640_module_exit); + +MODULE_DESCRIPTION("SoC Camera driver for OmniVision OV96xx"); +MODULE_AUTHOR("Marek Vasut <marek.vasut@xxxxxxxxx>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/media/video/ov9640.h b/drivers/media/video/ov9640.h new file mode 100644 index 0000000..f8a51b7 --- /dev/null +++ b/drivers/media/video/ov9640.h @@ -0,0 +1,209 @@ +/* + * OmniVision OV96xx Camera Header File + * + * Copyright (C) 2009 Marek Vasut <marek.vasut@xxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __DRIVERS_MEDIA_VIDEO_OV9640_H__ +#define __DRIVERS_MEDIA_VIDEO_OV9640_H__ + +/* Register definitions */ +#define OV9640_GAIN 0x00 +#define OV9640_BLUE 0x01 +#define OV9640_RED 0x02 +#define OV9640_VFER 0x03 +#define OV9640_COM1 0x04 +#define OV9640_BAVE 0x05 +#define OV9640_GEAVE 0x06 +#define OV9640_RSID 0x07 +#define OV9640_RAVE 0x08 +#define OV9640_COM2 0x09 +#define OV9640_PID 0x0a +#define OV9640_VER 0x0b +#define OV9640_COM3 0x0c +#define OV9640_COM4 0x0d +#define OV9640_COM5 0x0e +#define OV9640_COM6 0x0f +#define OV9640_AECH 0x10 +#define OV9640_CLKRC 0x11 +#define OV9640_COM7 0x12 +#define OV9640_COM8 0x13 +#define OV9640_COM9 0x14 +#define OV9640_COM10 0x15 +/* 0x16 - RESERVED */ +#define OV9640_HSTART 0x17 +#define OV9640_HSTOP 0x18 +#define OV9640_VSTART 0x19 +#define OV9640_VSTOP 0x1a +#define OV9640_PSHFT 0x1b +#define OV9640_MIDH 0x1c +#define OV9640_MIDL 0x1d +#define OV9640_MVFP 0x1e +#define OV9640_LAEC 0x1f +#define OV9640_BOS 0x20 +#define OV9640_GBOS 0x21 +#define OV9640_GROS 0x22 +#define OV9640_ROS 0x23 +#define OV9640_AEW 0x24 +#define OV9640_AEB 0x25 +#define OV9640_VPT 0x26 +#define OV9640_BBIAS 0x27 +#define OV9640_GBBIAS 0x28 +/* 0x29 - RESERVED */ +#define OV9640_EXHCH 0x2a +#define OV9640_EXHCL 0x2b +#define OV9640_RBIAS 0x2c +#define OV9640_ADVFL 0x2d +#define OV9640_ADVFH 0x2e +#define OV9640_YAVE 0x2f +#define OV9640_HSYST 0x30 +#define OV9640_HSYEN 0x31 +#define OV9640_HREF 0x32 +#define OV9640_CHLF 0x33 +#define OV9640_ARBLM 0x34 +/* 0x35..0x36 - RESERVED */ +#define OV9640_ADC 0x37 +#define OV9640_ACOM 0x38 +#define OV9640_OFON 0x39 +#define OV9640_TSLB 0x3a +#define OV9640_COM11 0x3b +#define OV9640_COM12 0x3c +#define OV9640_COM13 0x3d +#define OV9640_COM14 0x3e +#define OV9640_EDGE 0x3f +#define OV9640_COM15 0x40 +#define OV9640_COM16 0x41 +#define OV9640_COM17 0x42 +/* 0x43..0x4e - RESERVED */ +#define OV9640_MTX1 0x4f +#define OV9640_MTX2 0x50 +#define OV9640_MTX3 0x51 +#define OV9640_MTX4 0x52 +#define OV9640_MTX5 0x53 +#define OV9640_MTX6 0x54 +#define OV9640_MTX7 0x55 +#define OV9640_MTX8 0x56 +#define OV9640_MTX9 0x57 +#define OV9640_MTXS 0x58 +/* 0x59..0x61 - RESERVED */ +#define OV9640_LCC1 0x62 +#define OV9640_LCC2 0x63 +#define OV9640_LCC3 0x64 +#define OV9640_LCC4 0x65 +#define OV9640_LCC5 0x66 +#define OV9640_MANU 0x67 +#define OV9640_MANV 0x68 +#define OV9640_HV 0x69 +#define OV9640_MBD 0x6a +#define OV9640_DBLV 0x6b +#define OV9640_GSP 0x6c /* ... till 0x7b */ +#define OV9640_GST 0x7c /* ... till 0x8a */ + +#define OV9640_CLKRC_DPLL_EN 0x80 +#define OV9640_CLKRC_DIRECT 0x40 +#define OV9640_CLKRC_DIV(x) ((x) & 0x3f) + +#define OV9640_PSHFT_VAL(x) ((x) & 0xff) + +#define OV9640_ACOM_2X_ANALOG 0x80 +#define OV9640_ACOM_RSVD 0x12 + +#define OV9640_MVFP_V 0x10 +#define OV9640_MVFP_H 0x20 + +#define OV9640_COM1_HREF_NOSKIP 0x00 +#define OV9640_COM1_HREF_2SKIP 0x04 +#define OV9640_COM1_HREF_3SKIP 0x08 +#define OV9640_COM1_QQFMT 0x20 + +#define OV9640_COM2_SSM 0x10 + +#define OV9640_COM3_VP 0x04 + +#define OV9640_COM4_QQ_VP 0x80 +#define OV9640_COM4_RSVD 0x40 + +#define OV9640_COM5_SYSCLK 0x80 +#define OV9640_COM5_LONGEXP 0x01 + +#define OV9640_COM6_OPT_BLC 0x40 +#define OV9640_COM6_ADBLC_BIAS 0x08 +#define OV9640_COM6_FMT_RST 0x82 +#define OV9640_COM6_ADBLC_OPTEN 0x01 + +#define OV9640_COM7_RAW_RGB 0x01 +#define OV9640_COM7_RGB 0x04 +#define OV9640_COM7_QCIF 0x08 +#define OV9640_COM7_QVGA 0x10 +#define OV9640_COM7_CIF 0x20 +#define OV9640_COM7_VGA 0x40 +#define OV9640_COM7_SCCB_RESET 0x80 + +#define OV9640_TSLB_YVYU_YUYV 0x04 +#define OV9640_TSLB_YUYV_UYVY 0x08 + +#define OV9640_COM12_YUV_AVG 0x04 +#define OV9640_COM12_RSVD 0x40 + +#define OV9640_COM13_GAMMA_NONE 0x00 +#define OV9640_COM13_GAMMA_Y 0x40 +#define OV9640_COM13_GAMMA_RAW 0x80 +#define OV9640_COM13_RGB_AVG 0x20 +#define OV9640_COM13_MATRIX_EN 0x10 +#define OV9640_COM13_Y_DELAY_EN 0x08 +#define OV9640_COM13_YUV_DLY(x) ((x) & 0x07) + +#define OV9640_COM15_OR_00FF 0x00 +#define OV9640_COM15_OR_01FE 0x40 +#define OV9640_COM15_OR_10F0 0xc0 +#define OV9640_COM15_RGB_NORM 0x00 +#define OV9640_COM15_RGB_565 0x10 +#define OV9640_COM15_RGB_555 0x30 + +#define OV9640_COM16_RB_AVG 0x01 + +/* IDs */ +#define OV9640_V2 0x9648 +#define OV9640_V3 0x9649 +#define VERSION(pid, ver) (((pid) << 8) | ((ver) & 0xFF)) + +/* supported resolutions */ +enum { + W_QQCIF = 88, + W_QQVGA = 160, + W_QCIF = 176, + W_QVGA = 320, + W_CIF = 352, + W_VGA = 640, + W_SXGA = 1280 +}; +#define H_SXGA 960 + +/* Misc. structures */ +struct ov9640_reg_alt { + u8 com7; + u8 com12; + u8 com13; + u8 com15; +}; + +struct ov9640_reg { + u8 reg; + u8 val; +}; + +struct ov9640_priv { + struct v4l2_subdev subdev; + + int model; + int revision; + + bool flag_vflip; + bool flag_hflip; +}; + +#endif /* __DRIVERS_MEDIA_VIDEO_OV9640_H__ */ diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h index 11a4a2d..0892e52 100644 --- a/include/media/v4l2-chip-ident.h +++ b/include/media/v4l2-chip-ident.h @@ -60,6 +60,7 @@ enum { V4L2_IDENT_OV7670 = 250, V4L2_IDENT_OV7720 = 251, V4L2_IDENT_OV7725 = 252, + V4L2_IDENT_OV9640 = 253, /* module saa7146: reserved range 300-309 */ V4L2_IDENT_SAA7146 = 300, -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
