linux-kernel - Re: [PATCH v3 0/3] MTD: spinand: Add spi_mem_poll

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Date:   Tue, 18 May 2021 13:28:24 +0200
From:   Patrice CHOTARD <patrice.chotard@...s.st.com>
To:     Mark Brown <broonie@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        <linux-mtd@...ts.infradead.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <linux-spi@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <christophe.kerello@...s.st.com>
Subject: Re: [PATCH v3 0/3] MTD: spinand: Add spi_mem_poll_status() support

Just saw a missing update, i am sending a v4.
Sorry
Patrice

On 5/18/21 11:39 AM, patrice.chotard@...s.st.com wrote:
> From: Patrice Chotard <patrice.chotard@...s.st.com>
> 
> This series adds support for the spi_mem_poll_status() spinand
> interface.
> Some QSPI controllers allows to poll automatically memory 
> status during operations (erase, read or write). This allows to 
> offload the CPU for this task.
> STM32 QSPI is supporting this feature, driver update are also
> part of this series.
> 
> Chnages in v3:
>   - Add spi_mem_read_status() which allows to read 8 or 16 bits status.
>   - Add initial_delay_us and polling_delay_us parameters to spi_mem_poll_status().
>     and also to poll_status() callback.
>   - Move spi_mem_supports_op() in SW-based polling case.
>   - Add delay before invoquing read_poll_timeout().
>   - Remove the reinit/wait_for_completion() added in v2.
>   - Add initial_delay_us and polling_delay_us parameters to spinand_wait().
>   - Add SPINAND_READ/WRITE/ERASE/RESET_INITIAL_DELAY_US and
>     SPINAND_READ/WRITE/ERASE/RESET_POLL_DELAY_US defines.
>   - Remove spi_mem_finalize_op() API added in v2.
> 
> Changes in v2:
>   - Indicates the spi_mem_poll_status() timeout unit
>   - Use 2-byte wide status register
>   - Add spi_mem_supports_op() call in spi_mem_poll_status()
>   - Add completion management in spi_mem_poll_status()
>   - Add offload/non-offload case management in spi_mem_poll_status()
>   - Optimize the non-offload case by using read_poll_timeout()
>   - mask and match stm32_qspi_poll_status()'s parameters are 2-byte wide
>   - Make usage of new spi_mem_finalize_op() API in
>     stm32_qspi_wait_poll_status()
> 
> Patrice Chotard (3):
>   spi: spi-mem: add automatic poll status functions
>   mtd: spinand: use the spi-mem poll status APIs
>   spi: stm32-qspi: add automatic poll status feature
> 
>  drivers/mtd/nand/spi/core.c  | 45 +++++++++++++------
>  drivers/spi/spi-mem.c        | 85 ++++++++++++++++++++++++++++++++++++
>  drivers/spi/spi-stm32-qspi.c | 83 +++++++++++++++++++++++++++++++----
>  include/linux/mtd/spinand.h  | 11 ++++-
>  include/linux/spi/spi-mem.h  | 14 ++++++
>  5 files changed, 216 insertions(+), 22 deletions(-)
>