Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-18 17:12:55 +00:00
Code Issues Packages Projects Releases Wiki Activity
c5550bb950
linux/drivers/media/usb/gspca/m5602/m5602_po1030.c
Aditya Pakki a21a0eb56b media: gspca: Check the return value of write_bridge for timeout 
In po1030_probe(), m5602_write_bridge() can timeout and return an error
value. The fix checks for the return value and propagates upstream
consistent with other usb drivers.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16 11:25:56 -05:00

628 lines
16 KiB
C
Raw Blame History

/*
* Driver for the po1030 sensor
*
* Copyright (c) 2008 Erik Andrén
* Copyright (c) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
* Copyright (c) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
*
* Portions of code to USB interface and ALi driver software,
* Copyright (c) 2006 Willem Duinker
* v4l2 interface modeled after the V4L2 driver
* for SN9C10x PC Camera Controllers
*
* 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.
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "m5602_po1030.h"
static int po1030_s_ctrl(struct v4l2_ctrl *ctrl);
static void po1030_dump_registers(struct sd *sd);
static const unsigned char preinit_po1030[][3] = {
{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},
{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
{BRIDGE, M5602_XB_GPIO_DAT, 0x00}
};
static const unsigned char init_po1030[][3] = {
{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},
{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
{SENSOR, PO1030_AUTOCTRL2, 0x04},
{SENSOR, PO1030_OUTFORMCTRL2, PO1030_RAW_RGB_BAYER},
{SENSOR, PO1030_AUTOCTRL1, PO1030_WEIGHT_WIN_2X},
{SENSOR, PO1030_CONTROL2, 0x03},
{SENSOR, 0x21, 0x90},
{SENSOR, PO1030_YTARGET, 0x60},
{SENSOR, 0x59, 0x13},
{SENSOR, PO1030_OUTFORMCTRL1, PO1030_HREF_ENABLE},
{SENSOR, PO1030_EDGE_ENH_OFF, 0x00},
{SENSOR, PO1030_EGA, 0x80},
{SENSOR, 0x78, 0x14},
{SENSOR, 0x6f, 0x01},
{SENSOR, PO1030_GLOBALGAINMAX, 0x14},
{SENSOR, PO1030_Cb_U_GAIN, 0x38},
{SENSOR, PO1030_Cr_V_GAIN, 0x38},
{SENSOR, PO1030_CONTROL1, PO1030_SHUTTER_MODE |
PO1030_AUTO_SUBSAMPLING |
PO1030_FRAME_EQUAL},
{SENSOR, PO1030_GC0, 0x10},
{SENSOR, PO1030_GC1, 0x20},
{SENSOR, PO1030_GC2, 0x40},
{SENSOR, PO1030_GC3, 0x60},
{SENSOR, PO1030_GC4, 0x80},
{SENSOR, PO1030_GC5, 0xa0},
{SENSOR, PO1030_GC6, 0xc0},
{SENSOR, PO1030_GC7, 0xff},
/* Set the width to 751 */
{SENSOR, PO1030_FRAMEWIDTH_H, 0x02},
{SENSOR, PO1030_FRAMEWIDTH_L, 0xef},
/* Set the height to 540 */
{SENSOR, PO1030_FRAMEHEIGHT_H, 0x02},
{SENSOR, PO1030_FRAMEHEIGHT_L, 0x1c},
/* Set the x window to 1 */
{SENSOR, PO1030_WINDOWX_H, 0x00},
{SENSOR, PO1030_WINDOWX_L, 0x01},
/* Set the y window to 1 */
{SENSOR, PO1030_WINDOWY_H, 0x00},
{SENSOR, PO1030_WINDOWY_L, 0x01},
/* with a very low lighted environment increase the exposure but
* decrease the FPS (Frame Per Second) */
{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
};
static struct v4l2_pix_format po1030_modes[] = {
{
640,
480,
V4L2_PIX_FMT_SBGGR8,
V4L2_FIELD_NONE,
.sizeimage = 640 * 480,
.bytesperline = 640,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 2
}
};
static const struct v4l2_ctrl_ops po1030_ctrl_ops = {
.s_ctrl = po1030_s_ctrl,
};
static const struct v4l2_ctrl_config po1030_greenbal_cfg = {
.ops = &po1030_ctrl_ops,
.id = M5602_V4L2_CID_GREEN_BALANCE,
.name = "Green Balance",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = 255,
.step = 1,
.def = PO1030_GREEN_GAIN_DEFAULT,
.flags = V4L2_CTRL_FLAG_SLIDER,
};
int po1030_probe(struct sd *sd)
{
int rc = 0;
u8 dev_id_h = 0, i;
struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
if (force_sensor) {
if (force_sensor == PO1030_SENSOR) {
pr_info("Forcing a %s sensor\n", po1030.name);
goto sensor_found;
}
/* If we want to force another sensor, don't try to probe this
* one */
return -ENODEV;
}
gspca_dbg(gspca_dev, D_PROBE, "Probing for a po1030 sensor\n");
/* Run the pre-init to actually probe the unit */
for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
u8 data = preinit_po1030[i][2];
if (preinit_po1030[i][0] == SENSOR)
rc |= m5602_write_sensor(sd,
preinit_po1030[i][1], &data, 1);
else
rc |= m5602_write_bridge(sd, preinit_po1030[i][1],
data);
}
if (rc < 0)
return rc;
if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
return -ENODEV;
if (dev_id_h == 0x30) {
pr_info("Detected a po1030 sensor\n");
goto sensor_found;
}
return -ENODEV;
sensor_found:
sd->gspca_dev.cam.cam_mode = po1030_modes;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
return 0;
}
int po1030_init(struct sd *sd)
{
int i, err = 0;
/* Init the sensor */
for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
u8 data[2] = {0x00, 0x00};
switch (init_po1030[i][0]) {
case BRIDGE:
err = m5602_write_bridge(sd,
init_po1030[i][1],
init_po1030[i][2]);
break;
case SENSOR:
data[0] = init_po1030[i][2];
err = m5602_write_sensor(sd,
init_po1030[i][1], data, 1);
break;
default:
pr_info("Invalid stream command, exiting init\n");
return -EINVAL;
}
}
if (err < 0)
return err;
if (dump_sensor)
po1030_dump_registers(sd);
return 0;
}
int po1030_init_controls(struct sd *sd)
{
struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
sd->gspca_dev.vdev.ctrl_handler = hdl;
v4l2_ctrl_handler_init(hdl, 9);
sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
V4L2_CID_AUTO_WHITE_BALANCE,
0, 1, 1, 0);
sd->green_bal = v4l2_ctrl_new_custom(hdl, &po1030_greenbal_cfg, NULL);
sd->red_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
V4L2_CID_RED_BALANCE, 0, 255, 1,
PO1030_RED_GAIN_DEFAULT);
sd->blue_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
V4L2_CID_BLUE_BALANCE, 0, 255, 1,
PO1030_BLUE_GAIN_DEFAULT);
sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &po1030_ctrl_ops,
V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL);
sd->expo = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_EXPOSURE,
0, 0x2ff, 1, PO1030_EXPOSURE_DEFAULT);
sd->gain = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_GAIN, 0,
0x4f, 1, PO1030_GLOBAL_GAIN_DEFAULT);
sd->hflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_HFLIP,
0, 1, 1, 0);
sd->vflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_VFLIP,
0, 1, 1, 0);
if (hdl->error) {
pr_err("Could not initialize controls\n");
return hdl->error;
}
v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false);
v4l2_ctrl_cluster(2, &sd->hflip);
return 0;
}
int po1030_start(struct sd *sd)
{
struct cam *cam = &sd->gspca_dev.cam;
int i, err = 0;
int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
u8 data;
switch (width) {
case 320:
data = PO1030_SUBSAMPLING;
err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
if (err < 0)
return err;
data = ((width + 3) >> 8) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
if (err < 0)
return err;
data = (width + 3) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
if (err < 0)
return err;
data = ((height + 1) >> 8) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
if (err < 0)
return err;
data = (height + 1) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
height += 6;
width -= 1;
break;
case 640:
data = 0;
err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
if (err < 0)
return err;
data = ((width + 7) >> 8) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
if (err < 0)
return err;
data = (width + 7) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
if (err < 0)
return err;
data = ((height + 3) >> 8) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
if (err < 0)
return err;
data = (height + 3) & 0xff;
err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
height += 12;
width -= 2;
break;
}
err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
((ver_offs >> 8) & 0xff));
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
if (err < 0)
return err;
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
if (err < 0)
return err;
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff));
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
return err;
}
static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d\n", val & 0xffff);
i2c_data = ((val & 0xff00) >> 8);
gspca_dbg(gspca_dev, D_CONF, "Set exposure to high byte to 0x%x\n",
i2c_data);
err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
&i2c_data, 1);
if (err < 0)
return err;
i2c_data = (val & 0xff);
gspca_dbg(gspca_dev, D_CONF, "Set exposure to low byte to 0x%x\n",
i2c_data);
err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
&i2c_data, 1);
return err;
}
static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
i2c_data = val & 0xff;
gspca_dbg(gspca_dev, D_CONF, "Set global gain to %d\n", i2c_data);
err = m5602_write_sensor(sd, PO1030_GLOBALGAIN,
&i2c_data, 1);
return err;
}
static int po1030_set_hvflip(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
gspca_dbg(gspca_dev, D_CONF, "Set hvflip %d %d\n",
sd->hflip->val, sd->vflip->val);
err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
if (err < 0)
return err;
i2c_data = (0x3f & i2c_data) | (sd->hflip->val << 7) |
(sd->vflip->val << 6);
err = m5602_write_sensor(sd, PO1030_CONTROL2,
&i2c_data, 1);
return err;
}
static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
i2c_data = val & 0xff;
gspca_dbg(gspca_dev, D_CONF, "Set red gain to %d\n", i2c_data);
err = m5602_write_sensor(sd, PO1030_RED_GAIN,
&i2c_data, 1);
return err;
}
static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
i2c_data = val & 0xff;
gspca_dbg(gspca_dev, D_CONF, "Set blue gain to %d\n", i2c_data);
err = m5602_write_sensor(sd, PO1030_BLUE_GAIN,
&i2c_data, 1);
return err;
}
static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
i2c_data = val & 0xff;
gspca_dbg(gspca_dev, D_CONF, "Set green gain to %d\n", i2c_data);
err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN,
&i2c_data, 1);
if (err < 0)
return err;
return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN,
&i2c_data, 1);
}
static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
__s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
if (err < 0)
return err;
gspca_dbg(gspca_dev, D_CONF, "Set auto white balance to %d\n", val);
i2c_data = (i2c_data & 0xfe) | (val & 0x01);
err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
return err;
}
static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
__s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
if (err < 0)
return err;
gspca_dbg(gspca_dev, D_CONF, "Set auto exposure to %d\n", val);
val = (val == V4L2_EXPOSURE_AUTO);
i2c_data = (i2c_data & 0xfd) | ((val & 0x01) << 1);
return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
}
void po1030_disconnect(struct sd *sd)
{
sd->sensor = NULL;
}
static int po1030_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct gspca_dev *gspca_dev =
container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
struct sd *sd = (struct sd *) gspca_dev;
int err;
if (!gspca_dev->streaming)
return 0;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
err = po1030_set_auto_white_balance(gspca_dev, ctrl->val);
if (err || ctrl->val)
return err;
err = po1030_set_green_balance(gspca_dev, sd->green_bal->val);
if (err)
return err;
err = po1030_set_red_balance(gspca_dev, sd->red_bal->val);
if (err)
return err;
err = po1030_set_blue_balance(gspca_dev, sd->blue_bal->val);
break;
case V4L2_CID_EXPOSURE_AUTO:
err = po1030_set_auto_exposure(gspca_dev, ctrl->val);
if (err || ctrl->val == V4L2_EXPOSURE_AUTO)
return err;
err = po1030_set_exposure(gspca_dev, sd->expo->val);
break;
case V4L2_CID_GAIN:
err = po1030_set_gain(gspca_dev, ctrl->val);
break;
case V4L2_CID_HFLIP:
err = po1030_set_hvflip(gspca_dev);
break;
default:
return -EINVAL;
}
return err;
}
static void po1030_dump_registers(struct sd *sd)
{
int address;
u8 value = 0;
pr_info("Dumping the po1030 sensor core registers\n");
for (address = 0; address < 0x7f; address++) {
m5602_read_sensor(sd, address, &value, 1);
pr_info("register 0x%x contains 0x%x\n", address, value);
}
pr_info("po1030 register state dump complete\n");
pr_info("Probing for which registers that are read/write\n");
for (address = 0; address < 0xff; address++) {
u8 old_value, ctrl_value;
u8 test_value[2] = {0xff, 0xff};
m5602_read_sensor(sd, address, &old_value, 1);
m5602_write_sensor(sd, address, test_value, 1);
m5602_read_sensor(sd, address, &ctrl_value, 1);
if (ctrl_value == test_value[0])
pr_info("register 0x%x is writeable\n", address);
else
pr_info("register 0x%x is read only\n", address);
/* Restore original value */
m5602_write_sensor(sd, address, &old_value, 1);
}
}
Reference in New Issue View Git Blame Copy Permalink