C++ (Cpp) bmm_i2c_read примеры использования

Пример #1

Файл: bmm050_driver.c Проект: deeiko/kernel_lge_e0

static int bmm_wakeup(struct i2c_client *client)
{
	int err = 0;
	int try_times = BMM_MAX_RETRY_WAKEUP;
	const u8 value = 0x01;
	u8 dummy;

	PINFO("waking up the chip...");

	while (try_times) {
		err = bmm_i2c_write(client,
				BMM_REG_NAME(POWER_CNTL), (u8 *)&value, 1);
		mdelay(BMM_I2C_WRITE_DELAY_TIME);
		dummy = 0;
		err = bmm_i2c_read(client, BMM_REG_NAME(POWER_CNTL), &dummy, 1);
		if (value == dummy)
			break;

		try_times--;
	}

	PINFO("wake up result: %s, tried times: %d",
			(try_times > 0) ? "succeed" : "fail",
			BMM_MAX_RETRY_WAKEUP - try_times + 1);

	err = (try_times > 0) ? 0 : -1;

	return err;
}

Пример #2

Файл: bmm050_driver.c Проект: deeiko/kernel_lge_e0

static void bmm_dump_reg(struct i2c_client *client)
{
	int i;
#ifdef CONFIG_MACH_LGE
//                                                                     
//wbt 412964 	'dbg_buf' array elements are used uninitialized in this function with index range: [16,63].
	u8 dbg_buf[64] = "";
#else
	u8 dbg_buf[64];
#endif
	u8 dbg_buf_str[64 * 3 + 1] = "";

	for (i = 0; i < BYTES_PER_LINE; i++) {
		dbg_buf[i] = i;
		sprintf(dbg_buf_str + i * 3, "%02x%c",
				dbg_buf[i],
				(((i + 1) % BYTES_PER_LINE == 0) ? '\n' : ' '));
	}
	printk(KERN_DEBUG "%s\n", dbg_buf_str);

	bmm_i2c_read(client, BMM_REG_NAME(CHIP_ID), dbg_buf, 64);
	for (i = 0; i < 64; i++) {
		sprintf(dbg_buf_str + i * 3, "%02x%c",
				dbg_buf[i],
				(((i + 1) % BYTES_PER_LINE == 0) ? '\n' : ' '));
	}
	printk(KERN_DEBUG "%s\n", dbg_buf_str);
}

Пример #3

Файл: bmm050_driver.c Проект: TheTypoMaster/android_kernel_samsung_exynos5433

static int bmm_wakeup(struct i2c_client *client)
{
	int err = 0;
	int try_times = BMM_MAX_RETRY_WAKEUP;
	const u8 value = 0x01;
	u8 dummy;

	pr_info("%s -waking up the chip...",__func__);

	usleep_range(4900, 5000); /*BMM_I2C_WRITE_DELAY_TIME*/
	while (try_times) {
		err = bmm_i2c_write(client,
				BMM_REG_NAME(POWER_CNTL), (u8 *)&value, 1);
		usleep_range(4900, 5000);
		dummy = 0;
		err = bmm_i2c_read(client, BMM_REG_NAME(POWER_CNTL), &dummy, 1);
		if (value == dummy)
			break;

		try_times--;
	}

	pr_info("%s -wake up result: %s, tried times: %d",__func__,
			(try_times > 0) ? "succeed" : "fail",
			BMM_MAX_RETRY_WAKEUP - try_times + 1);

	err = (try_times > 0) ? 0 : -1;

	return err;
}

Пример #4

Файл: bmm050_driver.c Проект: deeiko/kernel_lge_e0

static int bmm_check_chip_id(struct i2c_client *client)
{
	int err = 0;
	u8 chip_id = 0;

	bmm_i2c_read(client, BMM_REG_NAME(CHIP_ID), &chip_id, 1);
	PINFO("read chip id result: %#x", chip_id);

	if ((chip_id & 0xff) != SENSOR_CHIP_ID_BMM)
		err = -1;

	return err;
}

Пример #5

Файл: bmm050_driver.c Проект: TheTypoMaster/android_kernel_samsung_exynos5433

static int bmm_check_chip_id(struct i2c_client *client)
{
	int err = -1;
	u8 chip_id = 0;
	u8 read_count = 0;

	while (read_count++ < CHECK_CHIP_ID_TIME_MAX) {
		bmm_i2c_read(client, BMM_REG_NAME(CHIP_ID), &chip_id, 1);
		pr_info("%s read chip id result: %#x", __func__,chip_id);

		if ((chip_id & 0xff) != SENSOR_CHIP_ID_BMM) {
			mdelay(1);
		} else {
			err = 0;
			break;
		}
	}

	return err;
}

Пример #6

static void bmm_dump_reg(struct i2c_client *client)
{
	int i;
	u8 dbg_buf[64];
	u8 dbg_buf_str[64 * 3 + 1] = "";

	for (i = 0; i < BYTES_PER_LINE; i++) {
		dbg_buf[i] = i;
		sprintf(dbg_buf_str + i * 3, "%02x%c",
				dbg_buf[i],
				(((i + 1) % BYTES_PER_LINE == 0) ? '\n' : ' '));
	}
	printk(KERN_DEBUG "%s\n", dbg_buf_str);

	bmm_i2c_read(client, BMM_REG_NAME(CHIP_ID), dbg_buf, 64);
	for (i = 0; i < 64; i++) {
		sprintf(dbg_buf_str + i * 3, "%02x%c",
				dbg_buf[i],
				(((i + 1) % BYTES_PER_LINE == 0) ? '\n' : ' '));
	}
	printk(KERN_DEBUG "%s\n", dbg_buf_str);
}