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/memory/renesas-rpc-if.h | 83 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 include/memory/renesas-rpc-if.h (limited to 'include/memory') diff --git a/include/memory/renesas-rpc-if.h b/include/memory/renesas-rpc-if.h new file mode 100644 index 000000000..53663c4e5 --- /dev/null +++ b/include/memory/renesas-rpc-if.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Renesas RPC-IF core driver + * + * Copyright (C) 2018~2019 Renesas Solutions Corp. + * Copyright (C) 2019 Macronix International Co., Ltd. + * Copyright (C) 2019-2020 Cogent Embedded, Inc. + */ + +#ifndef __RENESAS_RPC_IF_H +#define __RENESAS_RPC_IF_H + +#include +#include + +enum rpcif_data_dir { + RPCIF_NO_DATA, + RPCIF_DATA_IN, + RPCIF_DATA_OUT, +}; + +struct rpcif_op { + struct { + u8 buswidth; + u8 opcode; + bool ddr; + } cmd, ocmd; + + struct { + u8 nbytes; + u8 buswidth; + bool ddr; + u64 val; + } addr; + + struct { + u8 ncycles; + u8 buswidth; + } dummy; + + struct { + u8 nbytes; + u8 buswidth; + bool ddr; + u32 val; + } option; + + struct { + u8 buswidth; + unsigned int nbytes; + enum rpcif_data_dir dir; + bool ddr; + union { + void *in; + const void *out; + } buf; + } data; +}; + +enum rpcif_type { + RPCIF_RCAR_GEN3, + RPCIF_RCAR_GEN4, + RPCIF_RZ_G2L, + XSPI_RZ_G3E, +}; + +struct rpcif { + struct device *dev; + void __iomem *dirmap; + size_t size; + bool xspi; +}; + +int rpcif_sw_init(struct rpcif *rpc, struct device *dev); +int rpcif_hw_init(struct device *dev, bool hyperflash); +void rpcif_prepare(struct device *dev, const struct rpcif_op *op, u64 *offs, + size_t *len); +int rpcif_manual_xfer(struct device *dev); +ssize_t rpcif_dirmap_read(struct device *dev, u64 offs, size_t len, void *buf); +ssize_t xspi_dirmap_write(struct device *dev, u64 offs, size_t len, + const void *buf); + +#endif // __RENESAS_RPC_IF_H -- cgit v1.3.1