From e24328974a88aa8541e94e8bb8dfa2ade1b3c45d Mon Sep 17 00:00:00 2001 From: Donggeun Yoo Date: Wed, 2 Sep 2026 00:21:26 +0900 Subject: iio: proximity: vl53l0x-i2c: claim direct mode for raw reads vl53l0x_read_raw() starts a single-shot ranging measurement and reads back the result. Once the triggered buffer is enabled the sensor runs in continuous mode and its data-ready interrupt is routed to the trigger, so a concurrent in_distance_raw read disturbs the streaming setup and never gets its completion, returning -ETIMEDOUT. The original submission claimed direct mode here, but it was dropped during review because the driver had no buffer support at the time [1]. Continuous (buffered) mode was later added without restoring the claim [2], reintroducing the conflict. Reject direct reads while buffered capture is active by claiming direct mode around the measurement, as the vl53l1x sibling already does. Fixes: 762186c6e7b1 ("iio: proximity: vl53l0x-i2c: Added continuous mode support") Link: https://lore.kernel.org/linux-iio/20180911160300.GA9212@himanshu-Vostro-3559/ [1] Link: https://lore.kernel.org/linux-iio/20240909101508.263085-3-abhashkumarjha123@gmail.com/ [2] Signed-off-by: Donggeun Yoo Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron --- include/soc/microchip/mpfs.h | 54 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 include/soc/microchip/mpfs.h (limited to 'include/soc/microchip') diff --git a/include/soc/microchip/mpfs.h b/include/soc/microchip/mpfs.h new file mode 100644 index 000000000..ec04c98a8 --- /dev/null +++ b/include/soc/microchip/mpfs.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * + * Microchip PolarFire SoC (MPFS) + * + * Copyright (c) 2020 Microchip Corporation. All rights reserved. + * + * Author: Conor Dooley + * + */ + +#ifndef __SOC_MPFS_H__ +#define __SOC_MPFS_H__ + +#include +#include +#include + +struct mpfs_sys_controller; + +struct mpfs_mss_msg { + u8 cmd_opcode; + u16 cmd_data_size; + struct mpfs_mss_response *response; + u8 *cmd_data; + u16 mbox_offset; + u16 resp_offset; +}; + +struct mpfs_mss_response { + u32 resp_status; + u32 *resp_msg; + u16 resp_size; +}; + +#if IS_ENABLED(CONFIG_POLARFIRE_SOC_SYS_CTRL) + +int mpfs_blocking_transaction(struct mpfs_sys_controller *mpfs_client, struct mpfs_mss_msg *msg); + +struct mpfs_sys_controller *mpfs_sys_controller_get(struct device *dev); + +struct mtd_info *mpfs_sys_controller_get_flash(struct mpfs_sys_controller *mpfs_client); + +#endif /* if IS_ENABLED(CONFIG_POLARFIRE_SOC_SYS_CTRL) */ + +#if IS_ENABLED(CONFIG_MCHP_CLK_MPFS) +#if IS_ENABLED(CONFIG_RESET_POLARFIRE_SOC) +int mpfs_reset_controller_register(struct device *clk_dev, struct regmap *map); +#else +static inline int mpfs_reset_controller_register(struct device *clk_dev, void __iomem *base) { return 0; } +#endif /* if IS_ENABLED(CONFIG_RESET_POLARFIRE_SOC) */ +#endif /* if IS_ENABLED(CONFIG_MCHP_CLK_MPFS) */ + +#endif /* __SOC_MPFS_H__ */ -- cgit v1.3.1