forked from Minki/linux
cf811d506a
All hail the static keyword Signed-off-by: Erik Andr?n <erik.andren@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
353 lines
8.6 KiB
C
353 lines
8.6 KiB
C
/*
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* Driver for the mt9m111 sensor
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*
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* Copyright (C) 2008 Erik Andrén
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* Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
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* Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
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*
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* Portions of code to USB interface and ALi driver software,
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* Copyright (c) 2006 Willem Duinker
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* v4l2 interface modeled after the V4L2 driver
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* for SN9C10x PC Camera Controllers
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#include "m5602_mt9m111.h"
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static int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val);
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static int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val);
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static int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
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static int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
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static int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
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static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val);
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static struct v4l2_pix_format mt9m111_modes[] = {
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{
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640,
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480,
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V4L2_PIX_FMT_SBGGR8,
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V4L2_FIELD_NONE,
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.sizeimage = 640 * 480,
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.bytesperline = 640,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0
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}
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};
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const static struct ctrl mt9m111_ctrls[] = {
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#define VFLIP_IDX 0
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{
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{
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.id = V4L2_CID_VFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "vertical flip",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 0
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},
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.set = mt9m111_set_vflip,
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.get = mt9m111_get_vflip
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},
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#define HFLIP_IDX 1
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{
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{
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.id = V4L2_CID_HFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "horizontal flip",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 0
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},
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.set = mt9m111_set_hflip,
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.get = mt9m111_get_hflip
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},
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#define GAIN_IDX 2
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{
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{
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.id = V4L2_CID_GAIN,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "gain",
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.minimum = 0,
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.maximum = (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2,
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.step = 1,
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.default_value = DEFAULT_GAIN,
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.flags = V4L2_CTRL_FLAG_SLIDER
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},
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.set = mt9m111_set_gain,
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.get = mt9m111_get_gain
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}
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};
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static void mt9m111_dump_registers(struct sd *sd);
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int mt9m111_probe(struct sd *sd)
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{
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u8 data[2] = {0x00, 0x00};
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int i;
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s32 *sensor_settings;
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if (force_sensor) {
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if (force_sensor == MT9M111_SENSOR) {
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info("Forcing a %s sensor", mt9m111.name);
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goto sensor_found;
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}
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/* If we want to force another sensor, don't try to probe this
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* one */
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return -ENODEV;
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}
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info("Probing for a mt9m111 sensor");
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/* Do the preinit */
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for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
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if (preinit_mt9m111[i][0] == BRIDGE) {
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m5602_write_bridge(sd,
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preinit_mt9m111[i][1],
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preinit_mt9m111[i][2]);
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} else {
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data[0] = preinit_mt9m111[i][2];
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data[1] = preinit_mt9m111[i][3];
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m5602_write_sensor(sd,
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preinit_mt9m111[i][1], data, 2);
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}
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}
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if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
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return -ENODEV;
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if ((data[0] == 0x14) && (data[1] == 0x3a)) {
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info("Detected a mt9m111 sensor");
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goto sensor_found;
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}
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return -ENODEV;
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sensor_found:
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sensor_settings = kmalloc(ARRAY_SIZE(mt9m111_ctrls) * sizeof(s32),
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GFP_KERNEL);
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if (!sensor_settings)
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return -ENOMEM;
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sd->gspca_dev.cam.cam_mode = mt9m111_modes;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
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sd->desc->ctrls = mt9m111_ctrls;
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sd->desc->nctrls = ARRAY_SIZE(mt9m111_ctrls);
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for (i = 0; i < ARRAY_SIZE(mt9m111_ctrls); i++)
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sensor_settings[i] = mt9m111_ctrls[i].qctrl.default_value;
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sd->sensor_priv = sensor_settings;
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if (dump_sensor)
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mt9m111_dump_registers(sd);
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return 0;
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}
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int mt9m111_init(struct sd *sd)
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{
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int i, err = 0;
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s32 *sensor_settings = sd->sensor_priv;
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/* Init the sensor */
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for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
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u8 data[2];
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if (init_mt9m111[i][0] == BRIDGE) {
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err = m5602_write_bridge(sd,
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init_mt9m111[i][1],
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init_mt9m111[i][2]);
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} else {
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data[0] = init_mt9m111[i][2];
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data[1] = init_mt9m111[i][3];
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err = m5602_write_sensor(sd,
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init_mt9m111[i][1], data, 2);
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}
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}
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err = mt9m111_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
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if (err < 0)
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return err;
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err = mt9m111_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
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if (err < 0)
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return err;
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err = mt9m111_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
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return err;
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}
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void mt9m111_disconnect(struct sd *sd)
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{
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sd->sensor = NULL;
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kfree(sd->sensor_priv);
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}
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static int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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s32 *sensor_settings = sd->sensor_priv;
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*val = sensor_settings[VFLIP_IDX];
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PDEBUG(D_V4L2, "Read vertical flip %d", *val);
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return 0;
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}
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static int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 data[2] = {0x00, 0x00};
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struct sd *sd = (struct sd *) gspca_dev;
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s32 *sensor_settings = sd->sensor_priv;
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PDEBUG(D_V4L2, "Set vertical flip to %d", val);
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sensor_settings[VFLIP_IDX] = val;
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/* Set the correct page map */
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err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
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if (err < 0)
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return err;
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err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
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if (err < 0)
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return err;
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data[0] = (data[0] & 0xfe) | val;
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err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
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data, 2);
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return err;
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}
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static int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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s32 *sensor_settings = sd->sensor_priv;
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*val = sensor_settings[HFLIP_IDX];
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PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
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return 0;
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}
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static int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 data[2] = {0x00, 0x00};
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struct sd *sd = (struct sd *) gspca_dev;
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s32 *sensor_settings = sd->sensor_priv;
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PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
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sensor_settings[HFLIP_IDX] = val;
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/* Set the correct page map */
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err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
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if (err < 0)
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return err;
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err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
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if (err < 0)
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return err;
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data[0] = (data[0] & 0xfd) | ((val << 1) & 0x02);
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err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
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data, 2);
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return err;
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}
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static int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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s32 *sensor_settings = sd->sensor_priv;
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*val = sensor_settings[GAIN_IDX];
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PDEBUG(D_V4L2, "Read gain %d", *val);
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return 0;
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}
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static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err, tmp;
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u8 data[2] = {0x00, 0x00};
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struct sd *sd = (struct sd *) gspca_dev;
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s32 *sensor_settings = sd->sensor_priv;
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sensor_settings[GAIN_IDX] = val;
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/* Set the correct page map */
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err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
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if (err < 0)
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return err;
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if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
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return -EINVAL;
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if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
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(val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
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tmp = (1 << 10) | (val << 9) |
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(val << 8) | (val / 8);
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else if ((val >= INITIAL_MAX_GAIN * 2) &&
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(val < INITIAL_MAX_GAIN * 2 * 2))
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tmp = (1 << 9) | (1 << 8) | (val / 4);
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else if ((val >= INITIAL_MAX_GAIN) &&
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(val < INITIAL_MAX_GAIN * 2))
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tmp = (1 << 8) | (val / 2);
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else
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tmp = val;
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data[1] = (tmp & 0xff00) >> 8;
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data[0] = (tmp & 0xff);
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PDEBUG(D_V4L2, "tmp=%d, data[1]=%d, data[0]=%d", tmp,
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data[1], data[0]);
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err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
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data, 2);
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return err;
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}
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static void mt9m111_dump_registers(struct sd *sd)
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{
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u8 address, value[2] = {0x00, 0x00};
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info("Dumping the mt9m111 register state");
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info("Dumping the mt9m111 sensor core registers");
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value[1] = MT9M111_SENSOR_CORE;
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m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
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for (address = 0; address < 0xff; address++) {
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m5602_read_sensor(sd, address, value, 2);
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info("register 0x%x contains 0x%x%x",
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address, value[0], value[1]);
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}
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info("Dumping the mt9m111 color pipeline registers");
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value[1] = MT9M111_COLORPIPE;
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m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
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for (address = 0; address < 0xff; address++) {
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m5602_read_sensor(sd, address, value, 2);
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info("register 0x%x contains 0x%x%x",
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address, value[0], value[1]);
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}
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info("Dumping the mt9m111 camera control registers");
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value[1] = MT9M111_CAMERA_CONTROL;
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m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
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for (address = 0; address < 0xff; address++) {
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m5602_read_sensor(sd, address, value, 2);
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info("register 0x%x contains 0x%x%x",
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address, value[0], value[1]);
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}
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info("mt9m111 register state dump complete");
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}
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