From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c | 214 +++++++++++++++++++++++++++++++++++++----------------
1 files changed, 150 insertions(+), 64 deletions(-)
diff --git a/kernel/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c b/kernel/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
index 6c3e165..f7b5a70 100644
--- a/kernel/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
+++ b/kernel/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
@@ -1,21 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 Invensense, Inc.
-*
-* This software is licensed under the terms of the GNU General Public
-* License version 2, as published by the Free Software Foundation, and
-* may be copied, distributed, and modified under those terms.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU General Public License for more details.
*/
+#include <linux/pm_runtime.h>
#include "inv_mpu_iio.h"
-static void inv_scan_query(struct iio_dev *indio_dev)
+static unsigned int inv_scan_query_mpu6050(struct iio_dev *indio_dev)
{
struct inv_mpu6050_state *st = iio_priv(indio_dev);
+ unsigned int mask;
st->chip_config.gyro_fifo_enable =
test_bit(INV_MPU6050_SCAN_GYRO_X,
@@ -32,6 +26,127 @@
indio_dev->active_scan_mask) ||
test_bit(INV_MPU6050_SCAN_ACCL_Z,
indio_dev->active_scan_mask);
+
+ st->chip_config.temp_fifo_enable =
+ test_bit(INV_MPU6050_SCAN_TEMP, indio_dev->active_scan_mask);
+
+ mask = 0;
+ if (st->chip_config.gyro_fifo_enable)
+ mask |= INV_MPU6050_SENSOR_GYRO;
+ if (st->chip_config.accl_fifo_enable)
+ mask |= INV_MPU6050_SENSOR_ACCL;
+ if (st->chip_config.temp_fifo_enable)
+ mask |= INV_MPU6050_SENSOR_TEMP;
+
+ return mask;
+}
+
+static unsigned int inv_scan_query_mpu9x50(struct iio_dev *indio_dev)
+{
+ struct inv_mpu6050_state *st = iio_priv(indio_dev);
+ unsigned int mask;
+
+ mask = inv_scan_query_mpu6050(indio_dev);
+
+ /* no magnetometer if i2c auxiliary bus is used */
+ if (st->magn_disabled)
+ return mask;
+
+ st->chip_config.magn_fifo_enable =
+ test_bit(INV_MPU9X50_SCAN_MAGN_X,
+ indio_dev->active_scan_mask) ||
+ test_bit(INV_MPU9X50_SCAN_MAGN_Y,
+ indio_dev->active_scan_mask) ||
+ test_bit(INV_MPU9X50_SCAN_MAGN_Z,
+ indio_dev->active_scan_mask);
+ if (st->chip_config.magn_fifo_enable)
+ mask |= INV_MPU6050_SENSOR_MAGN;
+
+ return mask;
+}
+
+static unsigned int inv_scan_query(struct iio_dev *indio_dev)
+{
+ struct inv_mpu6050_state *st = iio_priv(indio_dev);
+
+ switch (st->chip_type) {
+ case INV_MPU9150:
+ case INV_MPU9250:
+ case INV_MPU9255:
+ return inv_scan_query_mpu9x50(indio_dev);
+ default:
+ return inv_scan_query_mpu6050(indio_dev);
+ }
+}
+
+static unsigned int inv_compute_skip_samples(const struct inv_mpu6050_state *st)
+{
+ unsigned int gyro_skip = 0;
+ unsigned int magn_skip = 0;
+ unsigned int skip_samples;
+
+ /* gyro first sample is out of specs, skip it */
+ if (st->chip_config.gyro_fifo_enable)
+ gyro_skip = 1;
+
+ /* mag first sample is always not ready, skip it */
+ if (st->chip_config.magn_fifo_enable)
+ magn_skip = 1;
+
+ /* compute first samples to skip */
+ skip_samples = gyro_skip;
+ if (magn_skip > skip_samples)
+ skip_samples = magn_skip;
+
+ return skip_samples;
+}
+
+int inv_mpu6050_prepare_fifo(struct inv_mpu6050_state *st, bool enable)
+{
+ uint8_t d;
+ int ret;
+
+ if (enable) {
+ st->it_timestamp = 0;
+ /* reset FIFO */
+ d = st->chip_config.user_ctrl | INV_MPU6050_BIT_FIFO_RST;
+ ret = regmap_write(st->map, st->reg->user_ctrl, d);
+ if (ret)
+ return ret;
+ /* enable sensor output to FIFO */
+ d = 0;
+ if (st->chip_config.gyro_fifo_enable)
+ d |= INV_MPU6050_BITS_GYRO_OUT;
+ if (st->chip_config.accl_fifo_enable)
+ d |= INV_MPU6050_BIT_ACCEL_OUT;
+ if (st->chip_config.temp_fifo_enable)
+ d |= INV_MPU6050_BIT_TEMP_OUT;
+ if (st->chip_config.magn_fifo_enable)
+ d |= INV_MPU6050_BIT_SLAVE_0;
+ ret = regmap_write(st->map, st->reg->fifo_en, d);
+ if (ret)
+ return ret;
+ /* enable FIFO reading */
+ d = st->chip_config.user_ctrl | INV_MPU6050_BIT_FIFO_EN;
+ ret = regmap_write(st->map, st->reg->user_ctrl, d);
+ if (ret)
+ return ret;
+ /* enable interrupt */
+ ret = regmap_write(st->map, st->reg->int_enable,
+ INV_MPU6050_BIT_DATA_RDY_EN);
+ } else {
+ ret = regmap_write(st->map, st->reg->int_enable, 0);
+ if (ret)
+ return ret;
+ ret = regmap_write(st->map, st->reg->fifo_en, 0);
+ if (ret)
+ return ret;
+ /* restore user_ctrl for disabling FIFO reading */
+ ret = regmap_write(st->map, st->reg->user_ctrl,
+ st->chip_config.user_ctrl);
+ }
+
+ return ret;
}
/**
@@ -42,72 +157,43 @@
static int inv_mpu6050_set_enable(struct iio_dev *indio_dev, bool enable)
{
struct inv_mpu6050_state *st = iio_priv(indio_dev);
+ struct device *pdev = regmap_get_device(st->map);
+ unsigned int scan;
int result;
if (enable) {
- result = inv_mpu6050_set_power_itg(st, true);
- if (result)
+ scan = inv_scan_query(indio_dev);
+ result = pm_runtime_get_sync(pdev);
+ if (result < 0) {
+ pm_runtime_put_noidle(pdev);
return result;
- inv_scan_query(indio_dev);
- st->skip_samples = 0;
- if (st->chip_config.gyro_fifo_enable) {
- result = inv_mpu6050_switch_engine(st, true,
- INV_MPU6050_BIT_PWR_GYRO_STBY);
- if (result)
- goto error_power_off;
- /* gyro first sample is out of specs, skip it */
- st->skip_samples = 1;
}
- if (st->chip_config.accl_fifo_enable) {
- result = inv_mpu6050_switch_engine(st, true,
- INV_MPU6050_BIT_PWR_ACCL_STBY);
- if (result)
- goto error_gyro_off;
- }
- result = inv_reset_fifo(indio_dev);
- if (result)
- goto error_accl_off;
- } else {
- result = regmap_write(st->map, st->reg->fifo_en, 0);
- if (result)
- goto error_accl_off;
-
- result = regmap_write(st->map, st->reg->int_enable, 0);
- if (result)
- goto error_accl_off;
-
- result = regmap_write(st->map, st->reg->user_ctrl,
- st->chip_config.user_ctrl);
- if (result)
- goto error_accl_off;
-
- result = inv_mpu6050_switch_engine(st, false,
- INV_MPU6050_BIT_PWR_ACCL_STBY);
- if (result)
- goto error_accl_off;
-
- result = inv_mpu6050_switch_engine(st, false,
- INV_MPU6050_BIT_PWR_GYRO_STBY);
- if (result)
- goto error_gyro_off;
-
- result = inv_mpu6050_set_power_itg(st, false);
+ /*
+ * In case autosuspend didn't trigger, turn off first not
+ * required sensors.
+ */
+ result = inv_mpu6050_switch_engine(st, false, ~scan);
if (result)
goto error_power_off;
+ result = inv_mpu6050_switch_engine(st, true, scan);
+ if (result)
+ goto error_power_off;
+ st->skip_samples = inv_compute_skip_samples(st);
+ result = inv_mpu6050_prepare_fifo(st, true);
+ if (result)
+ goto error_power_off;
+ } else {
+ result = inv_mpu6050_prepare_fifo(st, false);
+ if (result)
+ goto error_power_off;
+ pm_runtime_mark_last_busy(pdev);
+ pm_runtime_put_autosuspend(pdev);
}
return 0;
-error_accl_off:
- if (st->chip_config.accl_fifo_enable)
- inv_mpu6050_switch_engine(st, false,
- INV_MPU6050_BIT_PWR_ACCL_STBY);
-error_gyro_off:
- if (st->chip_config.gyro_fifo_enable)
- inv_mpu6050_switch_engine(st, false,
- INV_MPU6050_BIT_PWR_GYRO_STBY);
error_power_off:
- inv_mpu6050_set_power_itg(st, false);
+ pm_runtime_put_autosuspend(pdev);
return result;
}
--
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