From patchwork Tue Oct 16 01:38:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 10642569 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CA00B18FD for ; Tue, 16 Oct 2018 01:39:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B0F9B29736 for ; Tue, 16 Oct 2018 01:39:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A457E29776; Tue, 16 Oct 2018 01:39:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 339E3296C6 for ; Tue, 16 Oct 2018 01:39:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726959AbeJPJ1j (ORCPT ); Tue, 16 Oct 2018 05:27:39 -0400 Received: from vsp-unauthed02.binero.net ([195.74.38.227]:64731 "EHLO vsp-unauthed02.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726955AbeJPJ1j (ORCPT ); Tue, 16 Oct 2018 05:27:39 -0400 X-Halon-ID: 5a001642-d0e4-11e8-9adf-005056917a89 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA id 5a001642-d0e4-11e8-9adf-005056917a89; Tue, 16 Oct 2018 03:39:41 +0200 (CEST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Wolfram Sang , Ulf Hansson , linux-mmc@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 1/3] mmc: tmio: enable module clock before resetting when resuming Date: Tue, 16 Oct 2018 03:38:30 +0200 Message-Id: <20181016013832.2385-2-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181016013832.2385-1-niklas.soderlund@ragnatech.se> References: <20181016013832.2385-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Niklas Söderlund On runtime power management resume, the host clock needs to be enabled before calling tmio_mmc_reset. If the mmc device has a power domain entry, the host clock is enabled via genpd_runtime_resume, running before tmio_mmc_host_runtime_resume. If the mmc device has no power domain entry, however, genpd_runtime_resume is not called. This patch changes tmio_mmc_host_runtime_resume to enable the host clock before calling tmio_mmc_reset. Based on work from Masaharu Hayakawa. Signed-off-by: Niklas Söderlund --- drivers/mmc/host/tmio_mmc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index f05c3a622f090cd6..71d3b380760d425f 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -1330,8 +1330,8 @@ int tmio_mmc_host_runtime_resume(struct device *dev) { struct tmio_mmc_host *host = dev_get_drvdata(dev); - tmio_mmc_reset(host); tmio_mmc_clk_enable(host); + tmio_mmc_reset(host); if (host->clk_cache) host->set_clock(host, host->clk_cache); From patchwork Tue Oct 16 01:38:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 10642575 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 683043E9D for ; Tue, 16 Oct 2018 01:39:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 55E31296E9 for ; Tue, 16 Oct 2018 01:39:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 48EF329740; Tue, 16 Oct 2018 01:39:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C5FEC296E9 for ; Tue, 16 Oct 2018 01:39:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726986AbeJPJ1k (ORCPT ); Tue, 16 Oct 2018 05:27:40 -0400 Received: from vsp-unauthed02.binero.net ([195.74.38.227]:55519 "EHLO vsp-unauthed02.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726967AbeJPJ1k (ORCPT ); Tue, 16 Oct 2018 05:27:40 -0400 X-Halon-ID: 5a629a80-d0e4-11e8-9adf-005056917a89 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA id 5a629a80-d0e4-11e8-9adf-005056917a89; Tue, 16 Oct 2018 03:39:42 +0200 (CEST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Wolfram Sang , Ulf Hansson , linux-mmc@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 2/3] mmc: tmio: fix reset operation Date: Tue, 16 Oct 2018 03:38:31 +0200 Message-Id: <20181016013832.2385-3-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181016013832.2385-1-niklas.soderlund@ragnatech.se> References: <20181016013832.2385-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Niklas Söderlund SD / MMC did not operate properly when suspend transition failed. Because the SCC was not reset at resume, issue of the command failed. Merge tmio_mmc_reset() into tmio_mmc_hw_reset() in order to add reset of SCC to tmio_mmc_host_runtime_resume(). Based on work from Masaharu Hayakawa. Signed-off-by: Niklas Söderlund --- * Changes sine v1 - Merge tmio_mmc_reset() into tmio_mmc_hw_reset() as it's now the only caller. --- drivers/mmc/host/tmio_mmc_core.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 71d3b380760d425f..da7a5ceeeef0b7ae 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -157,8 +157,10 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) } } -static void tmio_mmc_reset(struct tmio_mmc_host *host) +static void tmio_mmc_hw_reset(struct mmc_host *mmc) { + struct tmio_mmc_host *host = mmc_priv(mmc); + /* FIXME - should we set stop clock reg here */ sd_ctrl_write16(host, CTL_RESET_SD, 0x0000); if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) @@ -174,6 +176,10 @@ static void tmio_mmc_reset(struct tmio_mmc_host *host) sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001); } + tmio_mmc_abort_dma(host); + + if (host->hw_reset) + host->hw_reset(host); } static void tmio_mmc_reset_work(struct work_struct *work) @@ -214,7 +220,7 @@ static void tmio_mmc_reset_work(struct work_struct *work) spin_unlock_irqrestore(&host->lock, flags); - tmio_mmc_reset(host); + tmio_mmc_hw_reset(host->mmc); /* Ready for new calls */ host->mrq = NULL; @@ -701,14 +707,6 @@ static int tmio_mmc_start_data(struct tmio_mmc_host *host, return 0; } -static void tmio_mmc_hw_reset(struct mmc_host *mmc) -{ - struct tmio_mmc_host *host = mmc_priv(mmc); - - if (host->hw_reset) - host->hw_reset(host); -} - static int tmio_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct tmio_mmc_host *host = mmc_priv(mmc); @@ -1230,7 +1228,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host) _host->sdio_irq_mask = TMIO_SDIO_MASK_ALL; _host->set_clock(_host, 0); - tmio_mmc_reset(_host); + tmio_mmc_hw_reset(mmc); _host->sdcard_irq_mask = sd_ctrl_read16_and_16_as_32(_host, CTL_IRQ_MASK); tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL); @@ -1331,7 +1329,7 @@ int tmio_mmc_host_runtime_resume(struct device *dev) struct tmio_mmc_host *host = dev_get_drvdata(dev); tmio_mmc_clk_enable(host); - tmio_mmc_reset(host); + tmio_mmc_hw_reset(host->mmc); if (host->clk_cache) host->set_clock(host, host->clk_cache); From patchwork Tue Oct 16 01:38:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 10642583 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F5803CF1 for ; Tue, 16 Oct 2018 01:39:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 60B01296E9 for ; Tue, 16 Oct 2018 01:39:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5524B296C6; Tue, 16 Oct 2018 01:39:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F3E93296E9 for ; Tue, 16 Oct 2018 01:39:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726982AbeJPJ1l (ORCPT ); Tue, 16 Oct 2018 05:27:41 -0400 Received: from bin-mail-out-05.binero.net ([195.74.38.228]:56981 "EHLO bin-mail-out-05.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726946AbeJPJ1l (ORCPT ); Tue, 16 Oct 2018 05:27:41 -0400 X-Halon-ID: 5b0f9cef-d0e4-11e8-9adf-005056917a89 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA id 5b0f9cef-d0e4-11e8-9adf-005056917a89; Tue, 16 Oct 2018 03:39:43 +0200 (CEST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Wolfram Sang , Ulf Hansson , linux-mmc@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 3/3] mmc: renesas_sdhi: add initial setting of interrupt mask register Date: Tue, 16 Oct 2018 03:38:32 +0200 Message-Id: <20181016013832.2385-4-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181016013832.2385-1-niklas.soderlund@ragnatech.se> References: <20181016013832.2385-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Niklas Söderlund The initial value of the interrupt mask register may be different from the H/W manual at the startup of the kernel by setting from the bootloader. Since the error interrupts may be unmasked, the driver sets initial value. The initial value is only known for R-Car Gen2 and Gen3 platforms so limit the initialization to those platforms. Based on work from Masaharu Hayakawa. Signed-off-by: Niklas Söderlund --- * Changes since v1 - Limit the initialization to Gen2+ platforms by checking the TMIO_MMC_MIN_RCAR2 flag. - Rename the constant for the initialization value to reflect it's only for R-Car Gen2+ platforms. - Move setting of the initial mask to renesas_sdhi. --- drivers/mmc/host/renesas_sdhi_core.c | 4 ++++ drivers/mmc/host/tmio_mmc.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index d3ac43c3d0b655dc..f2162f2b7de3ae05 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -532,6 +532,10 @@ static void renesas_sdhi_hw_reset(struct tmio_mmc_host *host) sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL, ~SH_MOBILE_SDHI_SCC_RVSCNTL_RVSEN & sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL)); + + if (host->pdata->flags & TMIO_MMC_MIN_RCAR2) + sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, + TMIO_MASK_INIT_RCAR2); } static int renesas_sdhi_wait_idle(struct tmio_mmc_host *host, u32 bit) diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index a9972dc60c6fbb8c..00673cec47a4de13 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -99,6 +99,7 @@ /* Define some IRQ masks */ /* This is the mask used at reset by the chip */ +#define TMIO_MASK_INIT_RCAR2 0x8b7f031d /* Initial value for R-Car Gen2+ */ #define TMIO_MASK_ALL 0x837f031d #define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND) #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND)