From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84F8CC4CEC9 for ; Wed, 18 Sep 2019 07:31:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F03921907 for ; Wed, 18 Sep 2019 07:31:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729033AbfIRHb5 (ORCPT ); Wed, 18 Sep 2019 03:31:57 -0400 Received: from twhmllg3.macronix.com ([122.147.135.201]:18802 "EHLO TWHMLLG3.macronix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728478AbfIRHb5 (ORCPT ); Wed, 18 Sep 2019 03:31:57 -0400 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG3.macronix.com with ESMTP id x8I7VoOd060926; Wed, 18 Sep 2019 15:31:50 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: miquel.raynal@bootlin.com, richard@nod.at, marek.vasut@gmail.com, dwmw2@infradead.org, bbrezillon@kernel.org, computersforpeace@gmail.com, vigneshr@ti.com Cc: marcel.ziswiler@toradex.com, juliensu@mxic.com.tw, linux-kernel@vger.kernel.org, frieder.schrempf@kontron.de, gregkh@linuxfoundation.org, linux-mtd@lists.infradead.org, masonccyang@mxic.com.tw, tglx@linutronix.de Subject: [PATCH RFC 1/3] mtd: rawnand: Add support manufacturer postponed initialization Date: Wed, 18 Sep 2019 15:56:24 +0800 Message-Id: <1568793387-25199-1-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 X-MAIL: TWHMLLG3.macronix.com x8I7VoOd060926 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Manufacturer postponed initialization is for MTD default call-back function replacement for vendor soecific operation, i.e., _lock/_unlock, _suspend/_resume and so on. Signed-off-by: Mason Yang --- drivers/mtd/nand/raw/internals.h | 4 ++++ drivers/mtd/nand/raw/nand_base.c | 19 +++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/mtd/nand/raw/internals.h b/drivers/mtd/nand/raw/internals.h index cba6fe7..505dd46 100644 --- a/drivers/mtd/nand/raw/internals.h +++ b/drivers/mtd/nand/raw/internals.h @@ -42,6 +42,9 @@ * is here to let vendor specific code release those resources. * @fixup_onfi_param_page: apply vendor specific fixups to the ONFI parameter * page. This is called after the checksum is verified. + * @post_init: postponed initialization is for MTD default call-back function + * replacement for vendor specific operation i.e., _lock/_unlock, + * _suspend/_resume and so on. */ struct nand_manufacturer_ops { void (*detect)(struct nand_chip *chip); @@ -49,6 +52,7 @@ struct nand_manufacturer_ops { void (*cleanup)(struct nand_chip *chip); void (*fixup_onfi_param_page)(struct nand_chip *chip, struct nand_onfi_params *p); + void (*post_init)(struct nand_chip *chip); }; /** diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 91f046d..7835b81 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4619,6 +4619,21 @@ static int nand_manufacturer_init(struct nand_chip *chip) } /* + * Manufacturer postponed initialization. This function is called for all NANDs + * whose MTD default call-back function replacement is needed. + * Manufacturer drivers should put all their specific postponed initialization + * code in their ->post_init() hook. + */ +static void nand_manufacturer_post_init(struct nand_chip *chip) +{ + if (!chip->manufacturer.desc || !chip->manufacturer.desc->ops || + !chip->manufacturer.desc->ops->post_init) + return; + + return chip->manufacturer.desc->ops->post_init(chip); +} + +/* * Manufacturer cleanup. This function is called for all NANDs including * ONFI and JEDEC compliant ones. * Manufacturer drivers should put all their specific cleanup code in their @@ -5812,6 +5827,10 @@ static int nand_scan_tail(struct nand_chip *chip) goto err_nanddev_cleanup; } + nand_select_target(chip, 0); + nand_manufacturer_post_init(chip); + nand_deselect_target(chip); + /* Check, if we should skip the bad block table scan */ if (chip->options & NAND_SKIP_BBTSCAN) return 0; -- 1.9.1