--- /dev/null
+/*
+ * tw9910 Video Driver
+ *
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Based on ov772x driver,
+ *
+ * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
+ * Copyright (C) 2008 Magnus Damm
+ * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
+ *
+ * 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/kernel.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 <media/tw9910.h>
+
+#define GET_ID(val) ((val & 0xF8) >> 3)
+#define GET_ReV(val) (val & 0x07)
+
+/*
+ * register offset
+ */
+#define ID 0x00 /* Product ID Code Register */
+#define STATUS1 0x01 /* Chip Status Register I */
+#define INFORM 0x02 /* Input Format */
+#define OPFORM 0x03 /* Output Format Control Register */
+#define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */
+#define OUTCTR1 0x05 /* Output Control I */
+#define ACNTL1 0x06 /* Analog Control Register 1 */
+#define CROP_HI 0x07 /* Cropping Register, High */
+#define VDELAY_LO 0x08 /* Vertical Delay Register, Low */
+#define VACTIVE_LO 0x09 /* Vertical Active Register, Low */
+#define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */
+#define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */
+#define CNTRL1 0x0C /* Control Register I */
+#define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */
+#define SCALE_HI 0x0E /* Scaling Register, High */
+#define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */
+#define BRIGHT 0x10 /* BRIGHTNESS Control Register */
+#define CONTRAST 0x11 /* CONTRAST Control Register */
+#define SHARPNESS 0x12 /* SHARPNESS Control Register I */
+#define SAT_U 0x13 /* Chroma (U) Gain Register */
+#define SAT_V 0x14 /* Chroma (V) Gain Register */
+#define HUE 0x15 /* Hue Control Register */
+#define CORING1 0x17
+#define CORING2 0x18 /* Coring and IF compensation */
+#define VBICNTL 0x19 /* VBI Control Register */
+#define ACNTL2 0x1A /* Analog Control 2 */
+#define OUTCTR2 0x1B /* Output Control 2 */
+#define SDT 0x1C /* Standard Selection */
+#define SDTR 0x1D /* Standard Recognition */
+#define TEST 0x1F /* Test Control Register */
+#define CLMPG 0x20 /* Clamping Gain */
+#define IAGC 0x21 /* Individual AGC Gain */
+#define AGCGAIN 0x22 /* AGC Gain */
+#define PEAKWT 0x23 /* White Peak Threshold */
+#define CLMPL 0x24 /* Clamp level */
+#define SYNCT 0x25 /* Sync Amplitude */
+#define MISSCNT 0x26 /* Sync Miss Count Register */
+#define PCLAMP 0x27 /* Clamp Position Register */
+#define VCNTL1 0x28 /* Vertical Control I */
+#define VCNTL2 0x29 /* Vertical Control II */
+#define CKILL 0x2A /* Color Killer Level Control */
+#define COMB 0x2B /* Comb Filter Control */
+#define LDLY 0x2C /* Luma Delay and H Filter Control */
+#define MISC1 0x2D /* Miscellaneous Control I */
+#define LOOP 0x2E /* LOOP Control Register */
+#define MISC2 0x2F /* Miscellaneous Control II */
+#define MVSN 0x30 /* Macrovision Detection */
+#define STATUS2 0x31 /* Chip STATUS II */
+#define HFREF 0x32 /* H monitor */
+#define CLMD 0x33 /* CLAMP MODE */
+#define IDCNTL 0x34 /* ID Detection Control */
+#define CLCNTL1 0x35 /* Clamp Control I */
+#define ANAPLLCTL 0x4C
+#define VBIMIN 0x4D
+#define HSLOWCTL 0x4E
+#define WSS3 0x4F
+#define FILLDATA 0x50
+#define SDID 0x51
+#define DID 0x52
+#define WSS1 0x53
+#define WSS2 0x54
+#define VVBI 0x55
+#define LCTL6 0x56
+#define LCTL7 0x57
+#define LCTL8 0x58
+#define LCTL9 0x59
+#define LCTL10 0x5A
+#define LCTL11 0x5B
+#define LCTL12 0x5C
+#define LCTL13 0x5D
+#define LCTL14 0x5E
+#define LCTL15 0x5F
+#define LCTL16 0x60
+#define LCTL17 0x61
+#define LCTL18 0x62
+#define LCTL19 0x63
+#define LCTL20 0x64
+#define LCTL21 0x65
+#define LCTL22 0x66
+#define LCTL23 0x67
+#define LCTL24 0x68
+#define LCTL25 0x69
+#define LCTL26 0x6A
+#define HSGEGIN 0x6B
+#define HSEND 0x6C
+#define OVSDLY 0x6D
+#define OVSEND 0x6E
+#define VBIDELAY 0x6F
+
+/*
+ * register detail
+ */
+
+/* INFORM */
+#define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */
+#define FC27_FF 0x00 /* 0 : Square pixel mode. */
+ /* Must use 24.54MHz for 60Hz field rate */
+ /* source or 29.5MHz for 50Hz field rate */
+#define IFSEL_S 0x10 /* 01 : S-video decoding */
+#define IFSEL_C 0x00 /* 00 : Composite video decoding */
+ /* Y input video selection */
+#define YSEL_M0 0x00 /* 00 : Mux0 selected */
+#define YSEL_M1 0x04 /* 01 : Mux1 selected */
+#define YSEL_M2 0x08 /* 10 : Mux2 selected */
+#define YSEL_M3 0x10 /* 11 : Mux3 selected */
+
+/* OPFORM */
+#define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */
+ /* 1 : ITU-R-656 compatible data sequence format */
+#define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */
+ /* 1 : 16-bit YCrCb 4:2:2 output format.*/
+#define LLCMODE 0x20 /* 1 : LLC output mode. */
+ /* 0 : free-run output mode */
+#define AINC 0x10 /* Serial interface auto-indexing control */
+ /* 0 : auto-increment */
+ /* 1 : non-auto */
+#define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */
+ /* 0 : Vertical out ctrl by HACTIVE and DVALID */
+#define OEN 0x04 /* Output Enable together with TRI_SEL. */
+
+/* OUTCTR1 */
+#define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */
+#define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */
+ /* VS pin output control */
+#define VSSL_VSYNC 0x00 /* 0 : VSYNC */
+#define VSSL_VACT 0x10 /* 1 : VACT */
+#define VSSL_FIELD 0x20 /* 2 : FIELD */
+#define VSSL_VVALID 0x30 /* 3 : VVALID */
+#define VSSL_ZERO 0x70 /* 7 : 0 */
+#define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */
+#define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/
+ /* HS pin output control */
+#define HSSL_HACT 0x00 /* 0 : HACT */
+#define HSSL_HSYNC 0x01 /* 1 : HSYNC */
+#define HSSL_DVALID 0x02 /* 2 : DVALID */
+#define HSSL_HLOCK 0x03 /* 3 : HLOCK */
+#define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */
+#define HSSL_ZERO 0x07 /* 7 : 0 */
+
+/* ACNTL1 */
+#define SRESET 0x80 /* resets the device to its default state
+ * but all register content remain unchanged.
+ * This bit is self-resetting.
+ */
+
+/* VBICNTL */
+/* RTSEL : control the real time signal
+* output from the MPOUT pin
+*/
+#define RTSEL_MASK 0x07
+#define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
+#define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
+#define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
+#define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
+#define RTSEL_MONO 0x04 /* 0100 = MONO */
+#define RTSEL_DET50 0x05 /* 0101 = DET50 */
+#define RTSEL_FIELD 0x06 /* 0110 = FIELD */
+#define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
+
+/*
+ * structure
+ */
+
+struct regval_list {
+ unsigned char reg_num;
+ unsigned char value;
+};
+
+struct tw9910_scale_ctrl {
+ char *name;
+ unsigned short width;
+ unsigned short height;
+ u16 hscale;
+ u16 vscale;
+};
+
+struct tw9910_cropping_ctrl {
+ u16 vdelay;
+ u16 vactive;
+ u16 hdelay;
+ u16 hactive;
+};
+
+struct tw9910_hsync_ctrl {
+ u16 start;
+ u16 end;
+};
+
+struct tw9910_priv {
+ struct tw9910_video_info *info;
+ struct i2c_client *client;
+ struct soc_camera_device icd;
+ const struct tw9910_scale_ctrl *scale;
+};
+
+/*
+ * register settings
+ */
+
+#define ENDMARKER { 0xff, 0xff }
+
+static const struct regval_list tw9910_default_regs[] =
+{
+ { OPFORM, 0x00 },
+ { OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
+ ENDMARKER,
+};
+
+static const struct soc_camera_data_format tw9910_color_fmt[] = {
+ {
+ .name = "VYUY",
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .depth = 16,
+ .colorspace = V4L2_COLORSPACE_SMPTE170M,
+ }
+};
+
+static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
+ {
+ .name = "NTSC SQ",
+ .width = 640,
+ .height = 480,
+ .hscale = 0x0100,
+ .vscale = 0x0100,
+ },
+ {
+ .name = "NTSC CCIR601",
+ .width = 720,
+ .height = 480,
+ .hscale = 0x0100,
+ .vscale = 0x0100,
+ },
+ {
+ .name = "NTSC SQ (CIF)",
+ .width = 320,
+ .height = 240,
+ .hscale = 0x0200,
+ .vscale = 0x0200,
+ },
+ {
+ .name = "NTSC CCIR601 (CIF)",
+ .width = 360,
+ .height = 240,
+ .hscale = 0x0200,
+ .vscale = 0x0200,
+ },
+ {
+ .name = "NTSC SQ (QCIF)",
+ .width = 160,
+ .height = 120,
+ .hscale = 0x0400,
+ .vscale = 0x0400,
+ },
+ {
+ .name = "NTSC CCIR601 (QCIF)",
+ .width = 180,
+ .height = 120,
+ .hscale = 0x0400,
+ .vscale = 0x0400,
+ },
+};
+
+static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
+ {
+ .name = "PAL SQ",
+ .width = 768,
+ .height = 576,
+ .hscale = 0x0100,
+ .vscale = 0x0100,
+ },
+ {
+ .name = "PAL CCIR601",
+ .width = 720,
+ .height = 576,
+ .hscale = 0x0100,
+ .vscale = 0x0100,
+ },
+ {
+ .name = "PAL SQ (CIF)",
+ .width = 384,
+ .height = 288,
+ .hscale = 0x0200,
+ .vscale = 0x0200,
+ },
+ {
+ .name = "PAL CCIR601 (CIF)",
+ .width = 360,
+ .height = 288,
+ .hscale = 0x0200,
+ .vscale = 0x0200,
+ },
+ {
+ .name = "PAL SQ (QCIF)",
+ .width = 192,
+ .height = 144,
+ .hscale = 0x0400,
+ .vscale = 0x0400,
+ },
+ {
+ .name = "PAL CCIR601 (QCIF)",
+ .width = 180,
+ .height = 144,
+ .hscale = 0x0400,
+ .vscale = 0x0400,
+ },
+};
+
+static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
+ .vdelay = 0x0012,
+ .vactive = 0x00F0,
+ .hdelay = 0x0010,
+ .hactive = 0x02D0,
+};
+
+static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
+ .start = 0x0260,
+ .end = 0x0300,
+};
+
+/*
+ * general function
+ */
+static int tw9910_set_scale(struct i2c_client *client,
+ const struct tw9910_scale_ctrl *scale)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(client, SCALE_HI,
+ (scale->vscale & 0x0F00) >> 4 |
+ (scale->hscale & 0x0F00) >> 8);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
+ scale->hscale & 0x00FF);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
+ scale->vscale & 0x00FF);
+
+ return ret;
+}
+
+static int tw9910_set_cropping(struct i2c_client *client,
+ const struct tw9910_cropping_ctrl *cropping)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(client, CROP_HI,
+ (cropping->vdelay & 0x0300) >> 2 |
+ (cropping->vactive & 0x0300) >> 4 |
+ (cropping->hdelay & 0x0300) >> 6 |
+ (cropping->hactive & 0x0300) >> 8);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
+ cropping->vdelay & 0x00FF);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
+ cropping->vactive & 0x00FF);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
+ cropping->hdelay & 0x00FF);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
+ cropping->hactive & 0x00FF);
+
+ return ret;
+}
+
+static int tw9910_set_hsync(struct i2c_client *client,
+ const struct tw9910_hsync_ctrl *hsync)
+{
+ int ret;
+
+ /* bit 10 - 3 */
+ ret = i2c_smbus_write_byte_data(client, HSGEGIN,
+ (hsync->start & 0x07F8) >> 3);
+ if (ret < 0)
+ return ret;
+
+ /* bit 10 - 3 */
+ ret = i2c_smbus_write_byte_data(client, HSEND,
+ (hsync->end & 0x07F8) >> 3);
+ if (ret < 0)
+ return ret;
+
+ /* bit 2 - 0 */
+ ret = i2c_smbus_read_byte_data(client, HSLOWCTL);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_byte_data(client, HSLOWCTL,
+ (ret & 0x88) |
+ (hsync->start & 0x0007) << 4 |
+ (hsync->end & 0x0007));
+
+ return ret;
+}
+
+static int tw9910_write_array(struct i2c_client *client,
+ const struct regval_list *vals)
+{
+ while (vals->reg_num != 0xff) {
+ int ret = i2c_smbus_write_byte_data(client,
+ vals->reg_num,
+ vals->value);
+ if (ret < 0)
+ return ret;
+ vals++;
+ }
+ return 0;
+}
+
+static int tw9910_mask_set(struct i2c_client *client, u8 command,
+ u8 mask, u8 set)
+{
+ s32 val = i2c_smbus_read_byte_data(client, command);
+
+ val &= ~mask;
+ val |= set;
+
+ return i2c_smbus_write_byte_data(client, command, val);
+}
+
+static void tw9910_reset(struct i2c_client *client)
+{
+ i2c_smbus_write_byte_data(client, ACNTL1, SRESET);
+ msleep(1);
+}
+
+static const struct tw9910_scale_ctrl*
+tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
+{
+ const struct tw9910_scale_ctrl *scale;
+ const struct tw9910_scale_ctrl *ret = NULL;
+ v4l2_std_id norm = icd->vdev->current_norm;
+ __u32 diff = 0xffffffff, tmp;
+ int size, i;
+
+ if (norm & V4L2_STD_NTSC) {
+ scale = tw9910_ntsc_scales;
+ size = ARRAY_SIZE(tw9910_ntsc_scales);
+ } else if (norm & V4L2_STD_PAL) {
+ scale = tw9910_pal_scales;
+ size = ARRAY_SIZE(tw9910_pal_scales);
+ } else {
+ return NULL;
+ }
+
+ for (i = 0; i < size; i++) {
+ tmp = abs(width - scale[i].width) +
+ abs(height - scale[i].height);
+ if (tmp < diff) {
+ diff = tmp;
+ ret = scale + i;
+ }
+ }
+
+ return ret;
+}
+
+/*
+ * soc_camera_ops function
+ */
+static int tw9910_init(struct soc_camera_device *icd)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+ int ret = 0;
+
+ if (priv->info->link.power) {
+ ret = priv->info->link.power(&priv->client->dev, 1);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (priv->info->link.reset)
+ ret = priv->info->link.reset(&priv->client->dev);
+
+ return ret;
+}
+
+static int tw9910_release(struct soc_camera_device *icd)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+ int ret = 0;
+
+ if (priv->info->link.power)
+ ret = priv->info->link.power(&priv->client->dev, 0);
+
+ return ret;
+}
+
+static int tw9910_start_capture(struct soc_camera_device *icd)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+
+ if (!priv->scale) {
+ dev_err(&icd->dev, "norm select error\n");
+ return -EPERM;
+ }
+
+ dev_dbg(&icd->dev, "%s %dx%d\n",
+ priv->scale->name,
+ priv->scale->width,
+ priv->scale->height);
+
+ return 0;
+}
+
+static int tw9910_stop_capture(struct soc_camera_device *icd)
+{
+ return 0;
+}
+
+static int tw9910_set_bus_param(struct soc_camera_device *icd,
+ unsigned long flags)
+{
+ return 0;
+}
+
+static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+ struct soc_camera_link *icl = priv->client->dev.platform_data;
+ unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
+ SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
+ SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
+
+ return soc_camera_apply_sensor_flags(icl, flags);
+}
+
+static int tw9910_get_chip_id(struct soc_camera_device *icd,
+ struct v4l2_chip_ident *id)
+{
+ id->ident = V4L2_IDENT_TW9910;
+ id->revision = 0;
+
+ return 0;
+}
+
+static int tw9910_set_std(struct soc_camera_device *icd,
+ v4l2_std_id *a)
+{
+ int ret = -EINVAL;
+
+ if (*a & (V4L2_STD_NTSC | V4L2_STD_PAL))
+ ret = 0;
+
+ return ret;
+}
+
+static int tw9910_enum_input(struct soc_camera_device *icd,
+ struct v4l2_input *inp)
+{
+ inp->type = V4L2_INPUT_TYPE_TUNER;
+ inp->std = V4L2_STD_UNKNOWN;
+ strcpy(inp->name, "Video");
+
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int tw9910_get_register(struct soc_camera_device *icd,
+ struct v4l2_register *reg)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+ int ret;
+
+ if (reg->reg > 0xff)
+ return -EINVAL;
+
+ ret = i2c_smbus_read_byte_data(priv->client, reg->reg);
+ if (ret < 0)
+ return ret;
+
+ /* ret = int
+ * reg->val = __u64
+ */
+ reg->val = (__u64)ret;
+
+ return 0;
+}
+
+static int tw9910_set_register(struct soc_camera_device *icd,
+ struct v4l2_register *reg)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+
+ if (reg->reg > 0xff ||
+ reg->val > 0xff)
+ return -EINVAL;
+
+ return i2c_smbus_write_byte_data(priv->client, reg->reg, reg->val);
+}
+#endif
+
+static int tw9910_set_fmt(struct soc_camera_device *icd, __u32 pixfmt,
+ struct v4l2_rect *rect)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+ int ret = -EINVAL;
+ u8 val;
+
+ /*
+ * select suitable norm
+ */
+ priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
+ if (!priv->scale)
+ return ret;
+
+ /*
+ * reset hardware
+ */
+ tw9910_reset(priv->client);
+ ret = tw9910_write_array(priv->client, tw9910_default_regs);
+ if (ret < 0)
+ return ret;
+ /*
+ * set bus width
+ */
+ val = 0x00;
+ if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
+ val = LEN;
+
+ ret = tw9910_mask_set(priv->client, OPFORM, LEN, val);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * select MPOUT behavior
+ */
+ switch (priv->info->mpout) {
+ case TW9910_MPO_VLOSS:
+ val = RTSEL_VLOSS; break;
+ case TW9910_MPO_HLOCK:
+ val = RTSEL_HLOCK; break;
+ case TW9910_MPO_SLOCK:
+ val = RTSEL_SLOCK; break;
+ case TW9910_MPO_VLOCK:
+ val = RTSEL_VLOCK; break;
+ case TW9910_MPO_MONO:
+ val = RTSEL_MONO; break;
+ case TW9910_MPO_DET50:
+ val = RTSEL_DET50; break;
+ case TW9910_MPO_FIELD:
+ val = RTSEL_FIELD; break;
+ case TW9910_MPO_RTCO:
+ val = RTSEL_RTCO; break;
+ default:
+ val = 0;
+ }
+
+ ret = tw9910_mask_set(priv->client, VBICNTL, RTSEL_MASK, val);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * set scale
+ */
+ ret = tw9910_set_scale(priv->client, priv->scale);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * set cropping
+ */
+ ret = tw9910_set_cropping(priv->client, &tw9910_cropping_ctrl);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * set hsync
+ */
+ ret = tw9910_set_hsync(priv->client, &tw9910_hsync_ctrl);
+
+ return ret;
+}
+
+static int tw9910_try_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ const struct tw9910_scale_ctrl *scale;
+
+ if (V4L2_FIELD_ANY == pix->field) {
+ pix->field = V4L2_FIELD_INTERLACED;
+ } else if (V4L2_FIELD_INTERLACED != pix->field) {
+ dev_err(&icd->dev, "Field type invalid.\n");
+ return -EINVAL;
+ }
+
+ /*
+ * select suitable norm
+ */
+ scale = tw9910_select_norm(icd, pix->width, pix->height);
+ if (!scale)
+ return -EINVAL;
+
+ pix->width = scale->width;
+ pix->height = scale->height;
+
+ return 0;
+}
+
+static int tw9910_video_probe(struct soc_camera_device *icd)
+{
+ struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
+ s32 val;
+ int ret;
+
+ /*
+ * 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)
+ return -ENODEV;
+
+ /*
+ * tw9910 only use 8 or 16 bit bus width
+ */
+ if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
+ SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
+ dev_err(&icd->dev, "bus width error\n");
+ return -ENODEV;
+ }
+
+ icd->formats = tw9910_color_fmt;
+ icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
+
+ /*
+ * check and show Product ID
+ */
+ val = i2c_smbus_read_byte_data(priv->client, ID);
+ if (0x0B != GET_ID(val) ||
+ 0x00 != GET_ReV(val)) {
+ dev_err(&icd->dev,
+ "Product ID error %x:%x\n", GET_ID(val), GET_ReV(val));
+ return -ENODEV;
+ }
+
+ dev_info(&icd->dev,
+ "tw9910 Product ID %0x:%0x\n", GET_ID(val), GET_ReV(val));
+
+ ret = soc_camera_video_start(icd);
+ if (ret < 0)
+ return ret;
+
+ icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
+ icd->vdev->current_norm = V4L2_STD_NTSC;
+
+ return ret;
+}
+
+static void tw9910_video_remove(struct soc_camera_device *icd)
+{
+ soc_camera_video_stop(icd);
+}
+
+static struct soc_camera_ops tw9910_ops = {
+ .owner = THIS_MODULE,
+ .probe = tw9910_video_probe,
+ .remove = tw9910_video_remove,
+ .init = tw9910_init,
+ .release = tw9910_release,
+ .start_capture = tw9910_start_capture,
+ .stop_capture = tw9910_stop_capture,
+ .set_fmt = tw9910_set_fmt,
+ .try_fmt = tw9910_try_fmt,
+ .set_bus_param = tw9910_set_bus_param,
+ .query_bus_param = tw9910_query_bus_param,
+ .get_chip_id = tw9910_get_chip_id,
+ .set_std = tw9910_set_std,
+ .enum_input = tw9910_enum_input,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .get_register = tw9910_get_register,
+ .set_register = tw9910_set_register,
+#endif
+};
+
+/*
+ * i2c_driver function
+ */
+
+static int tw9910_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+
+{
+ struct tw9910_priv *priv;
+ struct tw9910_video_info *info;
+ struct soc_camera_device *icd;
+ const struct tw9910_scale_ctrl *scale;
+ int i, ret;
+
+ info = client->dev.platform_data;
+ if (!info)
+ return -EINVAL;
+
+ if (!i2c_check_functionality(to_i2c_adapter(client->dev.parent),
+ I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_err(&client->dev,
+ "I2C-Adapter doesn't support "
+ "I2C_FUNC_SMBUS_BYTE_DATA\n");
+ return -EIO;
+ }
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->info = info;
+ priv->client = client;
+ i2c_set_clientdata(client, priv);
+
+ icd = &priv->icd;
+ icd->ops = &tw9910_ops;
+ icd->control = &client->dev;
+ icd->iface = info->link.bus_id;
+
+ /*
+ * set width and height
+ */
+ icd->width_max = tw9910_ntsc_scales[0].width; /* set default */
+ icd->width_min = tw9910_ntsc_scales[0].width;
+ icd->height_max = tw9910_ntsc_scales[0].height;
+ icd->height_min = tw9910_ntsc_scales[0].height;
+
+ scale = tw9910_ntsc_scales;
+ for (i = 0; i < ARRAY_SIZE(tw9910_ntsc_scales); i++) {
+ icd->width_max = max(scale[i].width, icd->width_max);
+ icd->width_min = min(scale[i].width, icd->width_min);
+ icd->height_max = max(scale[i].height, icd->height_max);
+ icd->height_min = min(scale[i].height, icd->height_min);
+ }
+ scale = tw9910_pal_scales;
+ for (i = 0; i < ARRAY_SIZE(tw9910_pal_scales); i++) {
+ icd->width_max = max(scale[i].width, icd->width_max);
+ icd->width_min = min(scale[i].width, icd->width_min);
+ icd->height_max = max(scale[i].height, icd->height_max);
+ icd->height_min = min(scale[i].height, icd->height_min);
+ }
+
+ ret = soc_camera_device_register(icd);
+
+ if (ret) {
+ i2c_set_clientdata(client, NULL);
+ kfree(priv);
+ }
+
+ return ret;
+}
+
+static int tw9910_remove(struct i2c_client *client)
+{
+ struct tw9910_priv *priv = i2c_get_clientdata(client);
+
+ soc_camera_device_unregister(&priv->icd);
+ i2c_set_clientdata(client, NULL);
+ kfree(priv);
+ return 0;
+}
+
+static const struct i2c_device_id tw9910_id[] = {
+ { "tw9910", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tw9910_id);
+
+static struct i2c_driver tw9910_i2c_driver = {
+ .driver = {
+ .name = "tw9910",
+ },
+ .probe = tw9910_probe,
+ .remove = tw9910_remove,
+ .id_table = tw9910_id,
+};
+
+/*
+ * module function
+ */
+static int __init tw9910_module_init(void)
+{
+ return i2c_add_driver(&tw9910_i2c_driver);
+}
+
+static void __exit tw9910_module_exit(void)
+{
+ i2c_del_driver(&tw9910_i2c_driver);
+}
+
+module_init(tw9910_module_init);
+module_exit(tw9910_module_exit);
+
+MODULE_DESCRIPTION("SoC Camera driver for tw9910");
+MODULE_AUTHOR("Kuninori Morimoto");
+MODULE_LICENSE("GPL v2");
projects / linux-2.6-omap-h63xx.git / commitdiff