V4L/DVB (11743): Analog Devices ADV7343 video encoder driver

Add ADV7343 I2C based video encoder driver. This follows the
v4l2-subdev framework. This driver has been tested on TI DM646x EVM. It
has been tested for Composite and Component outputs.

Updates as per review by Mauro Chehab, added support for more standards
supported by the encoder. Also adding the missed out signed-offs.Tested
only NTSC and PAL standards.

[hverkuil@xs4all.nl: s_routing API changed, updated driver to use new API]
Signed-off-by: Manjunath Hadli <mrh@ti.com>
Signed-off-by: Brijesh Jadav <brijesh.j@ti.com>
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 534 insertions, 0 deletions

diff --git a/drivers/media/video/adv7343.c b/drivers/media/video/adv7343.c
new file mode 100644
index 000000000000..30f5caf5dda5
--- /dev/null
+++ b/drivers/media/video/adv7343.c
@@ -0,0 +1,534 @@
+/*
+ * adv7343 - ADV7343 Video Encoder Driver
+ *
+ * The encoder hardware does not support SECAM.
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed .as is. WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ctype.h>
+#include <linux/i2c.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/videodev2.h>
+#include <linux/uaccess.h>
+#include <linux/version.h>
+
+#include <media/adv7343.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+
+#include "adv7343_regs.h"
+
+MODULE_DESCRIPTION("ADV7343 video encoder driver");
+MODULE_LICENSE("GPL");
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level 0-1");
+
+struct adv7343_state {
+        struct v4l2_subdev sd;
+        u8 reg00;
+        u8 reg01;
+        u8 reg02;
+        u8 reg35;
+        u8 reg80;
+        u8 reg82;
+        int bright;
+        int hue;
+        int gain;
+        u32 output;
+        v4l2_std_id std;
+};
+
+static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
+{
+        return container_of(sd, struct adv7343_state, sd);
+}
+
+static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+        return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static const u8 adv7343_init_reg_val[] = {
+        ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
+        ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
+
+        ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
+        ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
+        ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
+        ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
+        ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
+        ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
+        ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
+
+        ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
+        ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
+        ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
+        ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
+        ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
+        ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
+        ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
+        ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
+
+        ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
+        ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
+        ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
+};
+
+/*
+ *                          2^32
+ * FSC(reg) =  FSC (HZ) * --------
+ *                        27000000
+ */
+static const struct adv7343_std_info stdinfo[] = {
+        {
+                /* FSC(Hz) = 3,579,545.45 Hz */
+                SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
+        }, {
+                /* FSC(Hz) = 3,575,611.00 Hz */
+                SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
+        }, {
+                /* FSC(Hz) = 3,582,056.00 */
+                SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
+        }, {
+                /* FSC(Hz) = 4,433,618.75 Hz */
+                SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
+        }, {
+                /* FSC(Hz) = 4,433,618.75 Hz */
+                SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
+        }, {
+                /* FSC(Hz) = 4,433,618.75 Hz */
+                SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
+        }, {
+                /* FSC(Hz) = 4,433,618.75 Hz */
+                SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
+        },
+};
+
+static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+        struct adv7343_state *state = to_state(sd);
+        struct adv7343_std_info *std_info;
+        int output_idx, num_std;
+        char *fsc_ptr;
+        u8 reg, val;
+        int err = 0;
+        int i = 0;
+
+        output_idx = state->output;
+
+        std_info = (struct adv7343_std_info *)stdinfo;
+        num_std = ARRAY_SIZE(stdinfo);
+
+        for (i = 0; i < num_std; i++) {
+                if (std_info[i].stdid & std)
+                        break;
+        }
+
+        if (i == num_std) {
+                v4l2_dbg(1, debug, sd,
+                                "Invalid std or std is not supported: %llx\n",
+                                                (unsigned long long)std);
+                return -EINVAL;
+        }
+
+        /* Set the standard */
+        val = state->reg80 & (~(SD_STD_MASK));
+        val |= std_info[i].standard_val3;
+        err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
+        if (err < 0)
+                goto setstd_exit;
+
+        state->reg80 = val;
+
+        /* Configure the input mode register */
+        val = state->reg01 & (~((u8) INPUT_MODE_MASK));
+        val |= SD_INPUT_MODE;
+        err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
+        if (err < 0)
+                goto setstd_exit;
+
+        state->reg01 = val;
+
+        /* Program the sub carrier frequency registers */
+        fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
+        reg = ADV7343_FSC_REG0;
+        for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
+                err = adv7343_write(sd, reg, *fsc_ptr);
+                if (err < 0)
+                        goto setstd_exit;
+        }
+
+        val = state->reg80;
+
+        /* Filter settings */
+        if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
+                val &= 0x03;
+        else if (std & ~V4L2_STD_SECAM)
+                val |= 0x04;
+
+        err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
+        if (err < 0)
+                goto setstd_exit;
+
+        state->reg80 = val;
+
+setstd_exit:
+        if (err != 0)
+                v4l2_err(sd, "Error setting std, write failed\n");
+
+        return err;
+}
+
+static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
+{
+        struct adv7343_state *state = to_state(sd);
+        unsigned char val;
+        int err = 0;
+
+        if (output_type > ADV7343_SVIDEO_ID) {
+                v4l2_dbg(1, debug, sd,
+                        "Invalid output type or output type not supported:%d\n",
+                                                                output_type);
+                return -EINVAL;
+        }
+
+        /* Enable Appropriate DAC */
+        val = state->reg00 & 0x03;
+
+        if (output_type == ADV7343_COMPOSITE_ID)
+                val |= ADV7343_COMPOSITE_POWER_VALUE;
+        else if (output_type == ADV7343_COMPONENT_ID)
+                val |= ADV7343_COMPONENT_POWER_VALUE;
+        else
+                val |= ADV7343_SVIDEO_POWER_VALUE;
+
+        err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
+        if (err < 0)
+                goto setoutput_exit;
+
+        state->reg00 = val;
+
+        /* Enable YUV output */
+        val = state->reg02 | YUV_OUTPUT_SELECT;
+        err = adv7343_write(sd, ADV7343_MODE_REG0, val);
+        if (err < 0)
+                goto setoutput_exit;
+
+        state->reg02 = val;
+
+        /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
+        val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
+        err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
+        if (err < 0)
+                goto setoutput_exit;
+
+        state->reg82 = val;
+
+        /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
+         * zero */
+        val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
+        err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
+        if (err < 0)
+                goto setoutput_exit;
+
+        state->reg35 = val;
+
+setoutput_exit:
+        if (err != 0)
+                v4l2_err(sd, "Error setting output, write failed\n");
+
+        return err;
+}
+
+static int adv7343_log_status(struct v4l2_subdev *sd)
+{
+        struct adv7343_state *state = to_state(sd);
+
+        v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
+        v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
+                        ((state->output == 1) ? "Component" : "S-Video"));
+        return 0;
+}
+
+static int adv7343_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
+{
+        switch (qc->id) {
+        case V4L2_CID_BRIGHTNESS:
+                return v4l2_ctrl_query_fill(qc, ADV7343_BRIGHTNESS_MIN,
+                                                ADV7343_BRIGHTNESS_MAX, 1,
+                                                ADV7343_BRIGHTNESS_DEF);
+        case V4L2_CID_HUE:
+                return v4l2_ctrl_query_fill(qc, ADV7343_HUE_MIN,
+                                                ADV7343_HUE_MAX, 1 ,
+                                                ADV7343_HUE_DEF);
+        case V4L2_CID_GAIN:
+                return v4l2_ctrl_query_fill(qc, ADV7343_GAIN_MIN,
+                                                ADV7343_GAIN_MAX, 1,
+                                                ADV7343_GAIN_DEF);
+        default:
+                break;
+        }
+
+        return 0;
+}
+
+static int adv7343_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+        struct adv7343_state *state = to_state(sd);
+        int err = 0;
+
+        switch (ctrl->id) {
+        case V4L2_CID_BRIGHTNESS:
+                if (ctrl->value < ADV7343_BRIGHTNESS_MIN ||
+                                        ctrl->value > ADV7343_BRIGHTNESS_MAX) {
+                        v4l2_dbg(1, debug, sd,
+                                        "invalid brightness settings %d\n",
+                                                                ctrl->value);
+                        return -ERANGE;
+                }
+
+                state->bright = ctrl->value;
+                err = adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
+                                        state->bright);
+                break;
+
+        case V4L2_CID_HUE:
+                if (ctrl->value < ADV7343_HUE_MIN ||
+                                        ctrl->value > ADV7343_HUE_MAX) {
+                        v4l2_dbg(1, debug, sd, "invalid hue settings %d\n",
+                                                                ctrl->value);
+                        return -ERANGE;
+                }
+
+                state->hue = ctrl->value;
+                err = adv7343_write(sd, ADV7343_SD_HUE_REG, state->hue);
+                break;
+
+        case V4L2_CID_GAIN:
+                if (ctrl->value < ADV7343_GAIN_MIN ||
+                                        ctrl->value > ADV7343_GAIN_MAX) {
+                        v4l2_dbg(1, debug, sd, "invalid gain settings %d\n",
+                                                                ctrl->value);
+                        return -ERANGE;
+                }
+
+                if ((ctrl->value > POSITIVE_GAIN_MAX) &&
+                        (ctrl->value < NEGATIVE_GAIN_MIN)) {
+                        v4l2_dbg(1, debug, sd,
+                                "gain settings not within the specified range\n");
+                        return -ERANGE;
+                }
+
+                state->gain = ctrl->value;
+                err = adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, state->gain);
+                break;
+
+        default:
+                return -EINVAL;
+        }
+
+        if (err < 0)
+                v4l2_err(sd, "Failed to set the encoder controls\n");
+
+        return err;
+}
+
+static int adv7343_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+        struct adv7343_state *state = to_state(sd);
+
+        switch (ctrl->id) {
+        case V4L2_CID_BRIGHTNESS:
+                ctrl->value = state->bright;
+                break;
+
+        case V4L2_CID_HUE:
+                ctrl->value = state->hue;
+                break;
+
+        case V4L2_CID_GAIN:
+                ctrl->value = state->gain;
+                break;
+
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
+                                struct v4l2_dbg_chip_ident *chip)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+        return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
+}
+
+static const struct v4l2_subdev_core_ops adv7343_core_ops = {
+        .log_status     = adv7343_log_status,
+        .g_chip_ident   = adv7343_g_chip_ident,
+        .g_ctrl         = adv7343_g_ctrl,
+        .s_ctrl         = adv7343_s_ctrl,
+        .queryctrl      = adv7343_queryctrl,
+};
+
+static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+        struct adv7343_state *state = to_state(sd);
+        int err = 0;
+
+        if (state->std == std)
+                return 0;
+
+        err = adv7343_setstd(sd, std);
+        if (!err)
+                state->std = std;
+
+        return err;
+}
+
+static int adv7343_s_routing(struct v4l2_subdev *sd,
+                u32 input, u32 output, u32 config)
+{
+        struct adv7343_state *state = to_state(sd);
+        int err = 0;
+
+        if (state->output == output)
+                return 0;
+
+        err = adv7343_setoutput(sd, output);
+        if (!err)
+                state->output = output;
+
+        return err;
+}
+
+static const struct v4l2_subdev_video_ops adv7343_video_ops = {
+        .s_std_output   = adv7343_s_std_output,
+        .s_routing      = adv7343_s_routing,
+};
+
+static const struct v4l2_subdev_ops adv7343_ops = {
+        .core   = &adv7343_core_ops,
+        .video  = &adv7343_video_ops,
+};
+
+static int adv7343_initialize(struct v4l2_subdev *sd)
+{
+        struct adv7343_state *state = to_state(sd);
+        int err = 0;
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
+
+                err = adv7343_write(sd, adv7343_init_reg_val[i],
+                                        adv7343_init_reg_val[i+1]);
+                if (err) {
+                        v4l2_err(sd, "Error initializing\n");
+                        return err;
+                }
+        }
+
+        /* Configure for default video standard */
+        err = adv7343_setoutput(sd, state->output);
+        if (err < 0) {
+                v4l2_err(sd, "Error setting output during init\n");
+                return -EINVAL;
+        }
+
+        err = adv7343_setstd(sd, state->std);
+        if (err < 0) {
+                v4l2_err(sd, "Error setting std during init\n");
+                return -EINVAL;
+        }
+
+        return err;
+}
+
+static int adv7343_probe(struct i2c_client *client,
+                                const struct i2c_device_id *id)
+{
+        struct adv7343_state *state;
+
+        if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+                return -ENODEV;
+
+        v4l_info(client, "chip found @ 0x%x (%s)\n",
+                        client->addr << 1, client->adapter->name);
+
+        state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
+        if (state == NULL)
+                return -ENOMEM;
+
+        state->reg00    = 0x80;
+        state->reg01    = 0x00;
+        state->reg02    = 0x20;
+        state->reg35    = 0x00;
+        state->reg80    = ADV7343_SD_MODE_REG1_DEFAULT;
+        state->reg82    = ADV7343_SD_MODE_REG2_DEFAULT;
+
+        state->output = ADV7343_COMPOSITE_ID;
+        state->std = V4L2_STD_NTSC;
+
+        v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
+        return adv7343_initialize(&state->sd);
+}
+
+static int adv7343_remove(struct i2c_client *client)
+{
+        struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+        v4l2_device_unregister_subdev(sd);
+        kfree(to_state(sd));
+
+        return 0;
+}
+
+static const struct i2c_device_id adv7343_id[] = {
+        {"adv7343", 0},
+        {},
+};
+
+MODULE_DEVICE_TABLE(i2c, adv7343_id);
+
+static struct i2c_driver adv7343_driver = {
+        .driver = {
+                .owner  = THIS_MODULE,
+                .name   = "adv7343",
+        },
+        .probe          = adv7343_probe,
+        .remove         = adv7343_remove,
+        .id_table       = adv7343_id,
+};
+
+static __init int init_adv7343(void)
+{
+        return i2c_add_driver(&adv7343_driver);
+}
+
+static __exit void exit_adv7343(void)
+{
+        i2c_del_driver(&adv7343_driver);
+}
+
+module_init(init_adv7343);
+module_exit(exit_adv7343);