From mboxrd@z Thu Jan 1 00:00:00 1970 From: Janusz Krzysztofik Subject: [PATCH v3 0/7] mtd: rawnand: ams-delta: Use GPIO API for data I/O Date: Tue, 14 Aug 2018 00:34:41 +0200 Message-ID: <20180813223448.21316-1-jmkrzyszt@gmail.com> References: <20180806222918.12644-1-jmkrzyszt@gmail.com> Return-path: In-Reply-To: <20180806222918.12644-1-jmkrzyszt@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Boris Brezillon , Miquel Raynal Cc: Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut , Tony Lindgren , Aaro Koskinen , Linus Walleij , linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-mtd@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Janusz Krzysztofik List-Id: linux-gpio@vger.kernel.org Implement the idea suggested by Artem Bityutskiy and Tony Lindgren, described in commit b027274d2e3a ("mtd: ams-delta: fix request_mem_region() failure"). Use pure GPIO API as suggested by Boris Brezillon. Janusz Krzysztofik (7): mtd: rawnand: ams-delta: show parent device in sysfs mtd: rawnand: ams-delta: Use private structure ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port mtd: rawnand: ams-delta: request data port GPIO resource mtd: rawnand: ams-delta: Set port direction when needed mtd: rawnand: ams-delta: Simplify pointer resolution on read/write mtd: rawnand: ams-delta: use GPIO API for data I/O Changelog: v3: [PATCH v3 1/7] mtd: rawnand: ams-delta: show parent device in sysfs - renamed and an explanation added based on other similar patches on Marek Vasut request, thanks. [PATCH v3 2/7] mtd: rawnand: ams-delta: Use private structure - no changes. [PATCH v3 3/7] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port - no changes. [PATCH v3 4/7] mtd: rawnand: ams-delta: request data port GPIO resource - no changes. [PATCH v3 5/7] mtd: rawnand: ams-delta: Set port direction when needed - modified to set port direction only when needed instead of on each transfer as suggested by Boris, thanks, though I kept separate *_next_byte() functions to maximize performance as much as possible, - moved back in front of "mtd: rawnand: ams-delta: use GPIO API for data I/O" with a comment added referring to the planned switch to GPIO API. [PATCH v3 6/7] mtd: rawnand: ams-delta: Simplify pointer resolution - moved back in front of "mtd: rawnand: ams-delta: use GPIO API for data I/O" on Boris request, thanks. [RFC PATCH v3 7/7] mtd: rawnand: ams-delta: use GPIO API for data I/O - rebased back on top of the two mentioned above, - not intended to apply it yet due to performance issues on Amstrad Delta. Removed from the series: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping [RFC PATCH v2 10/12] gpiolib: Introduce bitmap get/set array API extension [RFC PATCH v2 11/12] mtd: rawnand: ams-delta: Use GPIO API bitmap extension [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions - intended to be still iterated in a follow up series until performance issues are resolved. [RFC PATCH v2 06/12] ARM: OMAP1: ams-delta: drop obsolete NAND resources - postponed until acceptable performance on Amstrad Delta is achieved. v2: [RFC PATCH v2 00/12] mtd: rawnand: ams-delta: Use GPIO API for data I/O - renamed from former [RFC PATCH 0/8] mtd: rawnand: ams-delta: Use gpio-omap accessors for data I/O [RFC PATCH v2 01/12] mtd: rawnand: ams-delta: Assign mtd->dev.parent, not mtd->owner - split out from former [RFC PATCH 1/8] on Boris request, thanks. [RFC PATCH v2 02/12] mtd: rawnand: ams-delta: Use private structure - remaining part of the former [RFC PATCH 1/8]. [RFC PATCH v2 03/12] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port - split out from former [RFC PATCH 5/8] on Boris requesst, thanks, [RFC PATCH v2 04/12] mtd: rawnand: ams-delta: request data port GPIO resource - remaining part of the former [RFC PATCH 5/8], [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write - reworked from former [RFC PATCH 8/8] on Boris requesst to use pure GPIO API, thanks, - moved up in front of former [RFC PATCH 3/8] on Boris request, thanks. [RFC PATCH v2 06/12] ARM: OMAP1: ams-delta: drop obsolete NAND resources - split out from former [RFC PATCH 8/8]. [RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer - reworked from former [RFC PATCH 3/8] on top of [RFC PATCH v2 05/12]. [RFC PATCH v2 08/12] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write - reworked from former [RFC PATCH 4/8] on top of [RFC PATCH v2 08/12], - renamed from 'Optimize' to 'Simplify' on Boris request, thanks. [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping - new patch. [RFC PATCH v2 10/12] gpiolib: Introduce bitmap get/set array API extension - new patch. [RFC PATCH v2 11/12] mtd: rawnand: ams-delta: Use GPIO API bitmap extension - new patch. [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions - new patch. Removed from the series: [RFC PATCH 2/8] mtd: rawnand: ams-delta: Write protect device during probe - postponed on Boris request, thanks. [RFC PATCH 6/8] gpio: omap: Add get/set_multiple() callbacks - already applied by Linux in linux-gpio tree, thanks. [RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource - most controversial one, no longer needed after switching to GPIO API. diffstat arch/arm/mach-omap1/board-ams-delta.c | 11 - drivers/mtd/nand/raw/ams-delta.c | 351 +++++++++++++++++++--------------- 2 files changed, 209 insertions(+), 153 deletions(-) Thanks, Janusz From mboxrd@z Thu Jan 1 00:00:00 1970 From: jmkrzyszt@gmail.com (Janusz Krzysztofik) Date: Tue, 14 Aug 2018 00:34:41 +0200 Subject: [PATCH v3 0/7] mtd: rawnand: ams-delta: Use GPIO API for data I/O In-Reply-To: <20180806222918.12644-1-jmkrzyszt@gmail.com> References: <20180806222918.12644-1-jmkrzyszt@gmail.com> Message-ID: <20180813223448.21316-1-jmkrzyszt@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Implement the idea suggested by Artem Bityutskiy and Tony Lindgren, described in commit b027274d2e3a ("mtd: ams-delta: fix request_mem_region() failure"). Use pure GPIO API as suggested by Boris Brezillon. Janusz Krzysztofik (7): mtd: rawnand: ams-delta: show parent device in sysfs mtd: rawnand: ams-delta: Use private structure ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port mtd: rawnand: ams-delta: request data port GPIO resource mtd: rawnand: ams-delta: Set port direction when needed mtd: rawnand: ams-delta: Simplify pointer resolution on read/write mtd: rawnand: ams-delta: use GPIO API for data I/O Changelog: v3: [PATCH v3 1/7] mtd: rawnand: ams-delta: show parent device in sysfs - renamed and an explanation added based on other similar patches on Marek Vasut request, thanks. [PATCH v3 2/7] mtd: rawnand: ams-delta: Use private structure - no changes. [PATCH v3 3/7] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port - no changes. [PATCH v3 4/7] mtd: rawnand: ams-delta: request data port GPIO resource - no changes. [PATCH v3 5/7] mtd: rawnand: ams-delta: Set port direction when needed - modified to set port direction only when needed instead of on each transfer as suggested by Boris, thanks, though I kept separate *_next_byte() functions to maximize performance as much as possible, - moved back in front of "mtd: rawnand: ams-delta: use GPIO API for data I/O" with a comment added referring to the planned switch to GPIO API. [PATCH v3 6/7] mtd: rawnand: ams-delta: Simplify pointer resolution - moved back in front of "mtd: rawnand: ams-delta: use GPIO API for data I/O" on Boris request, thanks. [RFC PATCH v3 7/7] mtd: rawnand: ams-delta: use GPIO API for data I/O - rebased back on top of the two mentioned above, - not intended to apply it yet due to performance issues on Amstrad Delta. Removed from the series: [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping [RFC PATCH v2 10/12] gpiolib: Introduce bitmap get/set array API extension [RFC PATCH v2 11/12] mtd: rawnand: ams-delta: Use GPIO API bitmap extension [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions - intended to be still iterated in a follow up series until performance issues are resolved. [RFC PATCH v2 06/12] ARM: OMAP1: ams-delta: drop obsolete NAND resources - postponed until acceptable performance on Amstrad Delta is achieved. v2: [RFC PATCH v2 00/12] mtd: rawnand: ams-delta: Use GPIO API for data I/O - renamed from former [RFC PATCH 0/8] mtd: rawnand: ams-delta: Use gpio-omap accessors for data I/O [RFC PATCH v2 01/12] mtd: rawnand: ams-delta: Assign mtd->dev.parent, not mtd->owner - split out from former [RFC PATCH 1/8] on Boris request, thanks. [RFC PATCH v2 02/12] mtd: rawnand: ams-delta: Use private structure - remaining part of the former [RFC PATCH 1/8]. [RFC PATCH v2 03/12] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port - split out from former [RFC PATCH 5/8] on Boris requesst, thanks, [RFC PATCH v2 04/12] mtd: rawnand: ams-delta: request data port GPIO resource - remaining part of the former [RFC PATCH 5/8], [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write - reworked from former [RFC PATCH 8/8] on Boris requesst to use pure GPIO API, thanks, - moved up in front of former [RFC PATCH 3/8] on Boris request, thanks. [RFC PATCH v2 06/12] ARM: OMAP1: ams-delta: drop obsolete NAND resources - split out from former [RFC PATCH 8/8]. [RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer - reworked from former [RFC PATCH 3/8] on top of [RFC PATCH v2 05/12]. [RFC PATCH v2 08/12] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write - reworked from former [RFC PATCH 4/8] on top of [RFC PATCH v2 08/12], - renamed from 'Optimize' to 'Simplify' on Boris request, thanks. [RFC PATCH v2 09/12] gpiolib: Identify GPIO descriptor arrays with direct mapping - new patch. [RFC PATCH v2 10/12] gpiolib: Introduce bitmap get/set array API extension - new patch. [RFC PATCH v2 11/12] mtd: rawnand: ams-delta: Use GPIO API bitmap extension - new patch. [RFC PATCH v2 12/12] gpiolib: Add fast processing path to bitmap API functions - new patch. Removed from the series: [RFC PATCH 2/8] mtd: rawnand: ams-delta: Write protect device during probe - postponed on Boris request, thanks. [RFC PATCH 6/8] gpio: omap: Add get/set_multiple() callbacks - already applied by Linux in linux-gpio tree, thanks. [RFC PATCH 7/8] mtd: rawnand: ams-delta: Check sanity of data GPIO resource - most controversial one, no longer needed after switching to GPIO API. diffstat arch/arm/mach-omap1/board-ams-delta.c | 11 - drivers/mtd/nand/raw/ams-delta.c | 351 +++++++++++++++++++--------------- 2 files changed, 209 insertions(+), 153 deletions(-) Thanks, Janusz