624 lines
16 KiB
C
624 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for the po1030 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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include "m5602_po1030.h"
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static int po1030_s_ctrl(struct v4l2_ctrl *ctrl);
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static void po1030_dump_registers(struct sd *sd);
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static const unsigned char preinit_po1030[][3] = {
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{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
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{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
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{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
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{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
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{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
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{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x00}
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};
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static const unsigned char init_po1030[][3] = {
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{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
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{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
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{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
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{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
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{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
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{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
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{SENSOR, PO1030_AUTOCTRL2, 0x04},
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{SENSOR, PO1030_OUTFORMCTRL2, PO1030_RAW_RGB_BAYER},
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{SENSOR, PO1030_AUTOCTRL1, PO1030_WEIGHT_WIN_2X},
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{SENSOR, PO1030_CONTROL2, 0x03},
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{SENSOR, 0x21, 0x90},
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{SENSOR, PO1030_YTARGET, 0x60},
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{SENSOR, 0x59, 0x13},
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{SENSOR, PO1030_OUTFORMCTRL1, PO1030_HREF_ENABLE},
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{SENSOR, PO1030_EDGE_ENH_OFF, 0x00},
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{SENSOR, PO1030_EGA, 0x80},
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{SENSOR, 0x78, 0x14},
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{SENSOR, 0x6f, 0x01},
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{SENSOR, PO1030_GLOBALGAINMAX, 0x14},
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{SENSOR, PO1030_Cb_U_GAIN, 0x38},
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{SENSOR, PO1030_Cr_V_GAIN, 0x38},
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{SENSOR, PO1030_CONTROL1, PO1030_SHUTTER_MODE |
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PO1030_AUTO_SUBSAMPLING |
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PO1030_FRAME_EQUAL},
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{SENSOR, PO1030_GC0, 0x10},
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{SENSOR, PO1030_GC1, 0x20},
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{SENSOR, PO1030_GC2, 0x40},
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{SENSOR, PO1030_GC3, 0x60},
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{SENSOR, PO1030_GC4, 0x80},
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{SENSOR, PO1030_GC5, 0xa0},
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{SENSOR, PO1030_GC6, 0xc0},
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{SENSOR, PO1030_GC7, 0xff},
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/* Set the width to 751 */
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{SENSOR, PO1030_FRAMEWIDTH_H, 0x02},
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{SENSOR, PO1030_FRAMEWIDTH_L, 0xef},
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/* Set the height to 540 */
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{SENSOR, PO1030_FRAMEHEIGHT_H, 0x02},
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{SENSOR, PO1030_FRAMEHEIGHT_L, 0x1c},
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/* Set the x window to 1 */
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{SENSOR, PO1030_WINDOWX_H, 0x00},
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{SENSOR, PO1030_WINDOWX_L, 0x01},
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/* Set the y window to 1 */
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{SENSOR, PO1030_WINDOWY_H, 0x00},
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{SENSOR, PO1030_WINDOWY_L, 0x01},
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/* with a very low lighted environment increase the exposure but
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* decrease the FPS (Frame Per Second) */
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
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{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
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};
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static struct v4l2_pix_format po1030_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 = 2
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}
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};
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static const struct v4l2_ctrl_ops po1030_ctrl_ops = {
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.s_ctrl = po1030_s_ctrl,
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};
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static const struct v4l2_ctrl_config po1030_greenbal_cfg = {
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.ops = &po1030_ctrl_ops,
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.id = M5602_V4L2_CID_GREEN_BALANCE,
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.name = "Green Balance",
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.type = V4L2_CTRL_TYPE_INTEGER,
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.min = 0,
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.max = 255,
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.step = 1,
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.def = PO1030_GREEN_GAIN_DEFAULT,
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.flags = V4L2_CTRL_FLAG_SLIDER,
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};
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int po1030_probe(struct sd *sd)
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{
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int rc = 0;
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u8 dev_id_h = 0, i;
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struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
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if (force_sensor) {
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if (force_sensor == PO1030_SENSOR) {
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pr_info("Forcing a %s sensor\n", po1030.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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gspca_dbg(gspca_dev, D_PROBE, "Probing for a po1030 sensor\n");
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/* Run the pre-init to actually probe the unit */
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for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
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u8 data = preinit_po1030[i][2];
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if (preinit_po1030[i][0] == SENSOR)
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rc |= m5602_write_sensor(sd,
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preinit_po1030[i][1], &data, 1);
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else
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rc |= m5602_write_bridge(sd, preinit_po1030[i][1],
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data);
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}
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if (rc < 0)
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return rc;
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if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
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return -ENODEV;
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if (dev_id_h == 0x30) {
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pr_info("Detected a po1030 sensor\n");
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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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sd->gspca_dev.cam.cam_mode = po1030_modes;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
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return 0;
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}
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int po1030_init(struct sd *sd)
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{
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int i, err = 0;
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/* Init the sensor */
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for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
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u8 data[2] = {0x00, 0x00};
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switch (init_po1030[i][0]) {
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case BRIDGE:
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err = m5602_write_bridge(sd,
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init_po1030[i][1],
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init_po1030[i][2]);
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break;
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case SENSOR:
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data[0] = init_po1030[i][2];
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err = m5602_write_sensor(sd,
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init_po1030[i][1], data, 1);
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break;
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default:
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pr_info("Invalid stream command, exiting init\n");
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return -EINVAL;
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}
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}
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if (err < 0)
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return err;
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if (dump_sensor)
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po1030_dump_registers(sd);
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return 0;
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}
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int po1030_init_controls(struct sd *sd)
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{
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struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
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sd->gspca_dev.vdev.ctrl_handler = hdl;
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v4l2_ctrl_handler_init(hdl, 9);
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sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
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V4L2_CID_AUTO_WHITE_BALANCE,
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0, 1, 1, 0);
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sd->green_bal = v4l2_ctrl_new_custom(hdl, &po1030_greenbal_cfg, NULL);
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sd->red_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
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V4L2_CID_RED_BALANCE, 0, 255, 1,
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PO1030_RED_GAIN_DEFAULT);
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sd->blue_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
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V4L2_CID_BLUE_BALANCE, 0, 255, 1,
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PO1030_BLUE_GAIN_DEFAULT);
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sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &po1030_ctrl_ops,
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V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL);
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sd->expo = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_EXPOSURE,
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0, 0x2ff, 1, PO1030_EXPOSURE_DEFAULT);
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sd->gain = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_GAIN, 0,
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0x4f, 1, PO1030_GLOBAL_GAIN_DEFAULT);
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sd->hflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_HFLIP,
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0, 1, 1, 0);
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sd->vflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_VFLIP,
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0, 1, 1, 0);
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if (hdl->error) {
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pr_err("Could not initialize controls\n");
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return hdl->error;
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}
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v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
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v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false);
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v4l2_ctrl_cluster(2, &sd->hflip);
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return 0;
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}
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int po1030_start(struct sd *sd)
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{
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struct cam *cam = &sd->gspca_dev.cam;
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int i, err = 0;
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int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
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int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
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int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
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u8 data;
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switch (width) {
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case 320:
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data = PO1030_SUBSAMPLING;
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err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
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if (err < 0)
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return err;
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data = ((width + 3) >> 8) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
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if (err < 0)
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return err;
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data = (width + 3) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
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if (err < 0)
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return err;
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data = ((height + 1) >> 8) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
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if (err < 0)
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return err;
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data = (height + 1) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
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height += 6;
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width -= 1;
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break;
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case 640:
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data = 0;
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err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
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if (err < 0)
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return err;
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data = ((width + 7) >> 8) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
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if (err < 0)
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return err;
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data = (width + 7) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
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if (err < 0)
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return err;
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data = ((height + 3) >> 8) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
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if (err < 0)
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return err;
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data = (height + 3) & 0xff;
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err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
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height += 12;
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width -= 2;
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break;
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}
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err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
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((ver_offs >> 8) & 0xff));
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
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if (err < 0)
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return err;
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for (i = 0; i < 2 && !err; i++)
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
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if (err < 0)
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return err;
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for (i = 0; i < 2 && !err; i++)
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
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for (i = 0; i < 2 && !err; i++)
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err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
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for (i = 0; i < 2 && !err; i++)
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err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff));
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
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return err;
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}
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static int po1030_set_exposure(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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u8 i2c_data;
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int err;
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gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d\n", val & 0xffff);
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i2c_data = ((val & 0xff00) >> 8);
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gspca_dbg(gspca_dev, D_CONF, "Set exposure to high byte to 0x%x\n",
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i2c_data);
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err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
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&i2c_data, 1);
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if (err < 0)
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return err;
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i2c_data = (val & 0xff);
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gspca_dbg(gspca_dev, D_CONF, "Set exposure to low byte to 0x%x\n",
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i2c_data);
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err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
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&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);
|
|
}
|
|
}
|