586 lines
16 KiB
C
586 lines
16 KiB
C
/*
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* Driver for the s5k83a 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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kthread.h>
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#include "m5602_s5k83a.h"
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static int s5k83a_s_ctrl(struct v4l2_ctrl *ctrl);
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static const struct v4l2_ctrl_ops s5k83a_ctrl_ops = {
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.s_ctrl = s5k83a_s_ctrl,
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};
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static struct v4l2_pix_format s5k83a_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 =
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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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static const unsigned char preinit_s5k83a[][4] = {
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{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
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{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0d, 0x00},
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{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00, 0x00},
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{BRIDGE, M5602_XB_SIG_INI, 0x00, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x1d, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x08, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x3f, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_H, 0x3f, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT_H, 0x00, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_L, 0xff, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_L, 0xff, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT_L, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0xb0, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0x80, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
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{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
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{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xf0, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x1d, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x1c, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x06, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT_H, 0x00, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_L, 0x00, 0x00},
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{BRIDGE, M5602_XB_I2C_CLK_DIV, 0x20, 0x00},
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};
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/* This could probably be considerably shortened.
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I don't have the hardware to experiment with it, patches welcome
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*/
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static const unsigned char init_s5k83a[][4] = {
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/* The following sequence is useless after a clean boot
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but is necessary after resume from suspend */
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{BRIDGE, M5602_XB_GPIO_DIR, 0x1d, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x08, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x3f, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_H, 0x3f, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT_H, 0x00, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_L, 0xff, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_L, 0xff, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT_L, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0xb0, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0x80, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
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{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
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{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xf0, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR, 0x1d, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT, 0x08, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_H, 0x06, 0x00},
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{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06, 0x00},
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{BRIDGE, M5602_XB_GPIO_DAT_H, 0x00, 0x00},
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{BRIDGE, M5602_XB_GPIO_EN_L, 0x00, 0x00},
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{BRIDGE, M5602_XB_I2C_CLK_DIV, 0x20, 0x00},
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{SENSOR, S5K83A_PAGE_MAP, 0x04, 0x00},
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{SENSOR, 0xaf, 0x01, 0x00},
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{SENSOR, S5K83A_PAGE_MAP, 0x00, 0x00},
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{SENSOR, 0x7b, 0xff, 0x00},
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{SENSOR, S5K83A_PAGE_MAP, 0x05, 0x00},
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{SENSOR, 0x01, 0x50, 0x00},
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{SENSOR, 0x12, 0x20, 0x00},
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{SENSOR, 0x17, 0x40, 0x00},
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{SENSOR, 0x1c, 0x00, 0x00},
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{SENSOR, 0x02, 0x70, 0x00},
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{SENSOR, 0x03, 0x0b, 0x00},
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{SENSOR, 0x04, 0xf0, 0x00},
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{SENSOR, 0x05, 0x0b, 0x00},
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{SENSOR, 0x06, 0x71, 0x00},
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{SENSOR, 0x07, 0xe8, 0x00}, /* 488 */
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{SENSOR, 0x08, 0x02, 0x00},
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{SENSOR, 0x09, 0x88, 0x00}, /* 648 */
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{SENSOR, 0x14, 0x00, 0x00},
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{SENSOR, 0x15, 0x20, 0x00}, /* 32 */
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{SENSOR, 0x19, 0x00, 0x00},
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{SENSOR, 0x1a, 0x98, 0x00}, /* 152 */
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{SENSOR, 0x0f, 0x02, 0x00},
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{SENSOR, 0x10, 0xe5, 0x00}, /* 741 */
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/* normal colors
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(this is value after boot, but after tries can be different) */
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{SENSOR, 0x00, 0x06, 0x00},
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};
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static const unsigned char start_s5k83a[][4] = {
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x06, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
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{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
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{BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
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{BRIDGE, M5602_XB_LINE_OF_FRAME_H, 0x81, 0x00},
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{BRIDGE, M5602_XB_PIX_OF_LINE_H, 0x82, 0x00},
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{BRIDGE, M5602_XB_SIG_INI, 0x01, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x01, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0xe4, 0x00}, /* 484 */
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_SIG_INI, 0x00, 0x00},
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{BRIDGE, M5602_XB_SIG_INI, 0x02, 0x00},
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{BRIDGE, M5602_XB_HSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_HSYNC_PARA, 0x00, 0x00},
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{BRIDGE, M5602_XB_HSYNC_PARA, 0x02, 0x00},
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{BRIDGE, M5602_XB_HSYNC_PARA, 0x7f, 0x00}, /* 639 */
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{BRIDGE, M5602_XB_SIG_INI, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
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{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
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};
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static void s5k83a_dump_registers(struct sd *sd);
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static int s5k83a_get_rotation(struct sd *sd, u8 *reg_data);
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static int s5k83a_set_led_indication(struct sd *sd, u8 val);
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static int s5k83a_set_flip_real(struct gspca_dev *gspca_dev,
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__s32 vflip, __s32 hflip);
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int s5k83a_probe(struct sd *sd)
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{
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u8 prod_id = 0, ver_id = 0;
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int i, err = 0;
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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 == S5K83A_SENSOR) {
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pr_info("Forcing a %s sensor\n", s5k83a.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 s5k83a sensor\n");
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/* Preinit the sensor */
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for (i = 0; i < ARRAY_SIZE(preinit_s5k83a) && !err; i++) {
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u8 data[2] = {preinit_s5k83a[i][2], preinit_s5k83a[i][3]};
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if (preinit_s5k83a[i][0] == SENSOR)
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err = m5602_write_sensor(sd, preinit_s5k83a[i][1],
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data, 2);
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else
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err = m5602_write_bridge(sd, preinit_s5k83a[i][1],
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data[0]);
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}
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/* We don't know what register (if any) that contain the product id
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* Just pick the first addresses that seem to produce the same results
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* on multiple machines */
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if (m5602_read_sensor(sd, 0x00, &prod_id, 1))
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return -ENODEV;
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if (m5602_read_sensor(sd, 0x01, &ver_id, 1))
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return -ENODEV;
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if ((prod_id == 0xff) || (ver_id == 0xff))
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return -ENODEV;
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else
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pr_info("Detected a s5k83a sensor\n");
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sensor_found:
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sd->gspca_dev.cam.cam_mode = s5k83a_modes;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(s5k83a_modes);
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/* null the pointer! thread is't running now */
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sd->rotation_thread = NULL;
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return 0;
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}
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int s5k83a_init(struct sd *sd)
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{
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int i, err = 0;
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for (i = 0; i < ARRAY_SIZE(init_s5k83a) && !err; i++) {
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u8 data[2] = {0x00, 0x00};
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switch (init_s5k83a[i][0]) {
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case BRIDGE:
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err = m5602_write_bridge(sd,
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init_s5k83a[i][1],
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init_s5k83a[i][2]);
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break;
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case SENSOR:
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data[0] = init_s5k83a[i][2];
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err = m5602_write_sensor(sd,
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init_s5k83a[i][1], data, 1);
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break;
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case SENSOR_LONG:
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data[0] = init_s5k83a[i][2];
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data[1] = init_s5k83a[i][3];
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err = m5602_write_sensor(sd,
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init_s5k83a[i][1], data, 2);
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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 (dump_sensor)
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s5k83a_dump_registers(sd);
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return err;
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}
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int s5k83a_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, 6);
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v4l2_ctrl_new_std(hdl, &s5k83a_ctrl_ops, V4L2_CID_BRIGHTNESS,
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0, 255, 1, S5K83A_DEFAULT_BRIGHTNESS);
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v4l2_ctrl_new_std(hdl, &s5k83a_ctrl_ops, V4L2_CID_EXPOSURE,
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0, S5K83A_MAXIMUM_EXPOSURE, 1,
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S5K83A_DEFAULT_EXPOSURE);
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v4l2_ctrl_new_std(hdl, &s5k83a_ctrl_ops, V4L2_CID_GAIN,
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0, 255, 1, S5K83A_DEFAULT_GAIN);
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sd->hflip = v4l2_ctrl_new_std(hdl, &s5k83a_ctrl_ops, V4L2_CID_HFLIP,
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0, 1, 1, 0);
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sd->vflip = v4l2_ctrl_new_std(hdl, &s5k83a_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_cluster(2, &sd->hflip);
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return 0;
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}
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static int rotation_thread_function(void *data)
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{
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struct sd *sd = (struct sd *) data;
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u8 reg, previous_rotation = 0;
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__s32 vflip, hflip;
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set_current_state(TASK_INTERRUPTIBLE);
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while (!schedule_timeout(msecs_to_jiffies(100))) {
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if (mutex_lock_interruptible(&sd->gspca_dev.usb_lock))
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break;
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s5k83a_get_rotation(sd, ®);
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if (previous_rotation != reg) {
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previous_rotation = reg;
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pr_info("Camera was flipped\n");
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hflip = sd->hflip->val;
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vflip = sd->vflip->val;
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if (reg) {
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vflip = !vflip;
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hflip = !hflip;
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}
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s5k83a_set_flip_real((struct gspca_dev *) sd,
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vflip, hflip);
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}
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mutex_unlock(&sd->gspca_dev.usb_lock);
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set_current_state(TASK_INTERRUPTIBLE);
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}
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/* return to "front" flip */
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if (previous_rotation) {
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hflip = sd->hflip->val;
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vflip = sd->vflip->val;
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s5k83a_set_flip_real((struct gspca_dev *) sd, vflip, hflip);
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}
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sd->rotation_thread = NULL;
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return 0;
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}
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int s5k83a_start(struct sd *sd)
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{
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int i, err = 0;
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/* Create another thread, polling the GPIO ports of the camera to check
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if it got rotated. This is how the windows driver does it so we have
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to assume that there is no better way of accomplishing this */
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sd->rotation_thread = kthread_create(rotation_thread_function,
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sd, "rotation thread");
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if (IS_ERR(sd->rotation_thread)) {
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err = PTR_ERR(sd->rotation_thread);
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sd->rotation_thread = NULL;
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return err;
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}
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wake_up_process(sd->rotation_thread);
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/* Preinit the sensor */
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for (i = 0; i < ARRAY_SIZE(start_s5k83a) && !err; i++) {
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u8 data[2] = {start_s5k83a[i][2], start_s5k83a[i][3]};
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if (start_s5k83a[i][0] == SENSOR)
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err = m5602_write_sensor(sd, start_s5k83a[i][1],
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data, 2);
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else
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err = m5602_write_bridge(sd, start_s5k83a[i][1],
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data[0]);
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}
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if (err < 0)
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return err;
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return s5k83a_set_led_indication(sd, 1);
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}
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int s5k83a_stop(struct sd *sd)
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{
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if (sd->rotation_thread)
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kthread_stop(sd->rotation_thread);
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return s5k83a_set_led_indication(sd, 0);
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}
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void s5k83a_disconnect(struct sd *sd)
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{
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s5k83a_stop(sd);
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sd->sensor = NULL;
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}
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static int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 data[2];
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struct sd *sd = (struct sd *) gspca_dev;
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|
|
data[0] = 0x00;
|
|
data[1] = 0x20;
|
|
err = m5602_write_sensor(sd, 0x14, data, 2);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
data[0] = 0x01;
|
|
data[1] = 0x00;
|
|
err = m5602_write_sensor(sd, 0x0d, data, 2);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* FIXME: This is not sane, we need to figure out the composition
|
|
of these registers */
|
|
data[0] = val >> 3; /* gain, high 5 bits */
|
|
data[1] = val >> 1; /* gain, high 7 bits */
|
|
err = m5602_write_sensor(sd, S5K83A_GAIN, data, 2);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
|
|
{
|
|
int err;
|
|
u8 data[1];
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
data[0] = val;
|
|
err = m5602_write_sensor(sd, S5K83A_BRIGHTNESS, data, 1);
|
|
return err;
|
|
}
|
|
|
|
static int s5k83a_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
|
|
{
|
|
int err;
|
|
u8 data[2];
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
data[0] = 0;
|
|
data[1] = val;
|
|
err = m5602_write_sensor(sd, S5K83A_EXPOSURE, data, 2);
|
|
return err;
|
|
}
|
|
|
|
static int s5k83a_set_flip_real(struct gspca_dev *gspca_dev,
|
|
__s32 vflip, __s32 hflip)
|
|
{
|
|
int err;
|
|
u8 data[1];
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
data[0] = 0x05;
|
|
err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* six bit is vflip, seven is hflip */
|
|
data[0] = S5K83A_FLIP_MASK;
|
|
data[0] = (vflip) ? data[0] | 0x40 : data[0];
|
|
data[0] = (hflip) ? data[0] | 0x80 : data[0];
|
|
|
|
err = m5602_write_sensor(sd, S5K83A_FLIP, data, 1);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
data[0] = (vflip) ? 0x0b : 0x0a;
|
|
err = m5602_write_sensor(sd, S5K83A_VFLIP_TUNE, data, 1);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
data[0] = (hflip) ? 0x0a : 0x0b;
|
|
err = m5602_write_sensor(sd, S5K83A_HFLIP_TUNE, data, 1);
|
|
return err;
|
|
}
|
|
|
|
static int s5k83a_set_hvflip(struct gspca_dev *gspca_dev)
|
|
{
|
|
int err;
|
|
u8 reg;
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
int hflip = sd->hflip->val;
|
|
int vflip = sd->vflip->val;
|
|
|
|
err = s5k83a_get_rotation(sd, ®);
|
|
if (err < 0)
|
|
return err;
|
|
if (reg) {
|
|
hflip = !hflip;
|
|
vflip = !vflip;
|
|
}
|
|
|
|
err = s5k83a_set_flip_real(gspca_dev, vflip, hflip);
|
|
return err;
|
|
}
|
|
|
|
static int s5k83a_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct gspca_dev *gspca_dev =
|
|
container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
|
|
int err;
|
|
|
|
if (!gspca_dev->streaming)
|
|
return 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
err = s5k83a_set_brightness(gspca_dev, ctrl->val);
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
err = s5k83a_set_exposure(gspca_dev, ctrl->val);
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
err = s5k83a_set_gain(gspca_dev, ctrl->val);
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
err = s5k83a_set_hvflip(gspca_dev);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int s5k83a_set_led_indication(struct sd *sd, u8 val)
|
|
{
|
|
int err = 0;
|
|
u8 data[1];
|
|
|
|
err = m5602_read_bridge(sd, M5602_XB_GPIO_DAT, data);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (val)
|
|
data[0] = data[0] | S5K83A_GPIO_LED_MASK;
|
|
else
|
|
data[0] = data[0] & ~S5K83A_GPIO_LED_MASK;
|
|
|
|
err = m5602_write_bridge(sd, M5602_XB_GPIO_DAT, data[0]);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Get camera rotation on Acer notebooks */
|
|
static int s5k83a_get_rotation(struct sd *sd, u8 *reg_data)
|
|
{
|
|
int err = m5602_read_bridge(sd, M5602_XB_GPIO_DAT, reg_data);
|
|
*reg_data = (*reg_data & S5K83A_GPIO_ROTATION_MASK) ? 0 : 1;
|
|
return err;
|
|
}
|
|
|
|
static void s5k83a_dump_registers(struct sd *sd)
|
|
{
|
|
int address;
|
|
u8 page, old_page;
|
|
m5602_read_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1);
|
|
|
|
for (page = 0; page < 16; page++) {
|
|
m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1);
|
|
pr_info("Dumping the s5k83a register state for page 0x%x\n",
|
|
page);
|
|
for (address = 0; address <= 0xff; address++) {
|
|
u8 val = 0;
|
|
m5602_read_sensor(sd, address, &val, 1);
|
|
pr_info("register 0x%x contains 0x%x\n", address, val);
|
|
}
|
|
}
|
|
pr_info("s5k83a register state dump complete\n");
|
|
|
|
for (page = 0; page < 16; page++) {
|
|
m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1);
|
|
pr_info("Probing for which registers that are read/write for page 0x%x\n",
|
|
page);
|
|
for (address = 0; address <= 0xff; address++) {
|
|
u8 old_val, ctrl_val, test_val = 0xff;
|
|
|
|
m5602_read_sensor(sd, address, &old_val, 1);
|
|
m5602_write_sensor(sd, address, &test_val, 1);
|
|
m5602_read_sensor(sd, address, &ctrl_val, 1);
|
|
|
|
if (ctrl_val == test_val)
|
|
pr_info("register 0x%x is writeable\n",
|
|
address);
|
|
else
|
|
pr_info("register 0x%x is read only\n",
|
|
address);
|
|
|
|
/* Restore original val */
|
|
m5602_write_sensor(sd, address, &old_val, 1);
|
|
}
|
|
}
|
|
pr_info("Read/write register probing complete\n");
|
|
m5602_write_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1);
|
|
}
|