[RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write

[RFC PATCH 0/8] mtd: rawnand: ams-delta: Use gpio-omap accessors for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
[RFC PATCH 1/8] mtd: rawnand: ams-delta: Use private structure · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 1/8] mtd: rawnand: ams-delta: Use private structure · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 1/8] mtd: rawnand: ams-delta: Use private structure · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-20
[RFC PATCH 3/8] mtd: rawnand: ams-delta: Set port direction once per transfer · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 3/8] mtd: rawnand: ams-delta: Set port direction once per transfer · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 3/8] mtd: rawnand: ams-delta: Set port direction once per transfer · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-20
Re: [RFC PATCH 3/8] mtd: rawnand: ams-delta: Set port direction once per transfer · Boris Brezillon <hidden> · 2018-07-20
[RFC PATCH 4/8] mtd: rawnand: ams-delta: Optimize pointer resolution on read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 4/8] mtd: rawnand: ams-delta: Optimize pointer resolution on read/write · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 4/8] mtd: rawnand: ams-delta: Optimize pointer resolution on read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-20
Re: [RFC PATCH 4/8] mtd: rawnand: ams-delta: Optimize pointer resolution on read/write · Boris Brezillon <hidden> · 2018-07-20
[RFC PATCH 5/8] mtd: rawnand: ams-delta: Request data port GPIO resource · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 5/8] mtd: rawnand: ams-delta: Request data port GPIO resource · Boris Brezillon <hidden> · 2018-07-19
[RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource · Linus Walleij <hidden> · 2018-07-29
Re: [RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource · Boris Brezillon <hidden> · 2018-07-29
Re: [RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource · Linus Walleij <hidden> · 2018-07-29
[RFC PATCH 8/8] mtd: rawnand: ams-delta: Use GPIO callbacks for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 8/8] mtd: rawnand: ams-delta: Use GPIO callbacks for data I/O · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 8/8] mtd: rawnand: ams-delta: Use GPIO callbacks for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-20
Re: [RFC PATCH 8/8] mtd: rawnand: ams-delta: Use GPIO callbacks for data I/O · Boris Brezillon <hidden> · 2018-07-20
[RFC PATCH 6/8] gpio: omap: Add get/set_multiple() callbacks · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 6/8] gpio: omap: Add get/set_multiple() callbacks · Linus Walleij <hidden> · 2018-07-29
Re: [RFC PATCH 6/8] gpio: omap: Add get/set_multiple() callbacks · Grygorii Strashko <grygorii.strashko@ti.com> · 2018-08-03
Re: [RFC PATCH 6/8] gpio: omap: Add get/set_multiple() callbacks · Linus Walleij <hidden> · 2018-08-03
[RFC PATCH 2/8] mtd: rawnand: ams-delta: Write protect device during probe · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-18
Re: [RFC PATCH 2/8] mtd: rawnand: ams-delta: Write protect device during probe · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 2/8] mtd: rawnand: ams-delta: Write protect device during probe · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-20
Re: [RFC PATCH 0/8] mtd: rawnand: ams-delta: Use gpio-omap accessors for data I/O · Boris Brezillon <hidden> · 2018-07-19
Re: [RFC PATCH 0/8] mtd: rawnand: ams-delta: Use gpio-omap accessors for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-07-20
Re: [RFC PATCH 0/8] mtd: rawnand: ams-delta: Use gpio-omap accessors for data I/O · Boris Brezillon <hidden> · 2018-07-20
[RFC PATCH v2] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
[RFC PATCH v2 01/12] mtd: rawnand: ams-delta: Assign mtd->dev.parent, not mtd->owner · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 01/12] mtd: rawnand: ams-delta: Assign mtd->dev.parent, not mtd->owner · Marek Vasut <marek.vasut@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 01/12] mtd: rawnand: ams-delta: Assign mtd->dev.parent, not mtd->owner · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-07
Re: [RFC PATCH v2 01/12] mtd: rawnand: ams-delta: Assign mtd->dev.parent, not mtd->owner · Boris Brezillon <hidden> · 2018-08-07
[RFC PATCH v2 02/12] mtd: rawnand: ams-delta: Use private structure · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 02/12] mtd: rawnand: ams-delta: Use private structure · Boris Brezillon <hidden> · 2018-08-07
[RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write · Marek Vasut <marek.vasut@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-07
Re: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write · Linus Walleij <hidden> · 2018-08-10
[RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-08
Re: [RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer · Miquel Raynal <miquel.raynal@bootlin.com> · 2018-08-08
[RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping · Linus Walleij <hidden> · 2018-08-06
Re: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-07
Re: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-07
[RFC PATCH v2 10/12] gpiolib: Introduce bitmap get/set array API extension · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
[RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions · Linus Walleij <hidden> · 2018-08-06
Re: [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-07
Re: [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions · Linus Walleij <hidden> · 2018-08-10
[RFC PATCH v2 11/12] mtd: rawnand: ams-delta: Use GPIO API bitmap extension · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
[RFC PATCH v2 08/12] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 08/12] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 08/12] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-07
[RFC PATCH v2 06/12] ARM: OMAP1: ams-delta: drop obsolete NAND resources · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
[RFC PATCH v2 03/12] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 03/12] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 03/12] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port · Linus Walleij <hidden> · 2018-08-10
[RFC PATCH v2 04/12] mtd: rawnand: ams-delta: request data port GPIO resource · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-06
Re: [RFC PATCH v2 04/12] mtd: rawnand: ams-delta: request data port GPIO resource · Boris Brezillon <hidden> · 2018-08-07
Re: [RFC PATCH v2 04/12] mtd: rawnand: ams-delta: request data port GPIO resource · Linus Walleij <hidden> · 2018-08-10
[PATCH v3 0/7] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
[PATCH v3 1/7] mtd: rawnand: ams-delta: show parent device in sysfs · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
[PATCH v3 3/7] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
[PATCH v3 4/7] mtd: rawnand: ams-delta: request data port GPIO resource · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
[PATCH v3 5/7] mtd: rawnand: ams-delta: Set port direction when needed · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
Re: [PATCH v3 5/7] mtd: rawnand: ams-delta: Set port direction when needed · Boris Brezillon <hidden> · 2018-08-16
[PATCH v3 7/7] mtd: rawnand: ams-delta: use GPIO API for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
Re: [PATCH v3 7/7] mtd: rawnand: ams-delta: use GPIO API for data I/O · Boris Brezillon <hidden> · 2018-08-16
[PATCH v3 6/7] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
[PATCH v3 2/7] mtd: rawnand: ams-delta: Use private structure · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-08-13
Subject: [PATCH v4 0/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-11-21
[PATCH v4 1/4] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-11-21
Re: [PATCH v4 1/4] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port · Tony Lindgren <tony@atomide.com> · 2018-11-23
[PATCH v4 2/4] mtd: rawnand: ams-delta: Request data port GPIO resource · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-11-21
[PATCH v4 3/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-11-21
Re: [PATCH v4 3/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Boris Brezillon <hidden> · 2018-11-21
[PATCH v4 4/4] ARM: OMAP1: ams-delta: Drop obsolete NAND resources · Janusz Krzysztofik <jmkrzyszt@gmail.com> · 2018-11-21
Re: Subject: [PATCH v4 0/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Boris Brezillon <hidden> · 2018-11-21
Re: Subject: [PATCH v4 0/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Tony Lindgren <tony@atomide.com> · 2018-11-23
Re: Subject: [PATCH v4 0/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Miquel Raynal <miquel.raynal@bootlin.com> · 2018-12-07
Re: Subject: [PATCH v4 0/4] mtd: rawnand: ams-delta: Use GPIO API for data I/O · Tony Lindgren <tony@atomide.com> · 2018-12-07

From: Linus Walleij <hidden>
Date: 2018-08-10 10:26:01
Also in: linux-doc, linux-gpio, linux-omap, lkml

On Tue, Aug 7, 2018 at 12:29 AM Janusz Krzysztofik [off-list ref] wrote:

Don't readw()/writew() data directly from/to GPIO port which is under
control of gpio-omap driver, use GPIO API instead.

Degrade of performance on Amstrad Delta is completely not acceptable.

The driver should work with any 8+-bit bidirectional GPIO port, not
only OMAP.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>

Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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