From patchwork Thu Sep 17 19:26:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amey Narkhede X-Patchwork-Id: 11783525 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F7D214B7 for ; Thu, 17 Sep 2020 20:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 431822087D for ; Thu, 17 Sep 2020 20:23:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JC0pE3H0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726361AbgIQUXA (ORCPT ); Thu, 17 Sep 2020 16:23:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726470AbgIQUXA (ORCPT ); Thu, 17 Sep 2020 16:23:00 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A440AC061353 for ; Thu, 17 Sep 2020 12:27:02 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id f2so1952171pgd.3 for ; Thu, 17 Sep 2020 12:27:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=wMjlazRpMsZhzq/NuhjNFXsrfTbseduYpzw80nNSiCI=; b=JC0pE3H0Kzs9q859k0jJ88xxXiFjmBD8WocnPLk0mvHxEAojh0KcnaJl0/e+E8w/sX lY9xgI63Ltiv5HT3SO/bQP6EMl1k2Lt/lyybC7dPbLkEcKY+pUA2T6rLna3mjL2hpixu gLQQLKgBEu5dwJpjY+QBifGtjlg6NUK07sfG8+M5D41sinoHa5ASnUQYuHNJHAE33SHQ LOb+p2WABqJu0lMSSXyGHLWI36JBUyqjPdQiYPnO+qbjX/GSReXNlvwQxek7bOgj680k LIMiESapt1Cmfq9kKN1LdHwSQ4k7UIvQeYlWvfZpPD+AcIGrKQHmFQBuN4fgdSps8Px3 mVbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=wMjlazRpMsZhzq/NuhjNFXsrfTbseduYpzw80nNSiCI=; b=tZSCmX8/rkl+Sy3D78Pl2ryoRrblUU/mbh2TgWcQY/TSlP5O4Me5bGpYanVnRc24tx TFcrbIIJ0hqI7jsAJhuTMMA/TXPSNPO1LdDZ4I1KgzD8csX6qrfLfoVK0fJYYdhaNmLp F4DkU38KmR8Jh+MQcz5cAEFe7TNoOeNE3lCmRrzfQHVlQwGLFQl0B4LSpazeDNrQtNFG 2ow7idKuRer4I68t7phm6g4jkWzSNazNzng04hBGpQuBHrQ/7u55lTJBIorewvMrx61I hEXGPOYGNwEtDxJyCi5vrrjZBYp0NB447+ji7T/CbY9mgnYrINSsIdJEqhZzedGEONz/ LxRw== X-Gm-Message-State: AOAM533SgrdbyfXPygihIqpkcPuv1s9fvQpsTZ9hyoP95mTrRqOJRjd8 L8sqJOLvFYgjFKXASOSIcN1CQVt7OoM= X-Google-Smtp-Source: ABdhPJwvQG6PfLgD9WqIduCeH6uJAUSOuDMGYVltpuIdmSt5uNlbth0ri/WAJLAnee5EbCZScC2BGg== X-Received: by 2002:aa7:989c:0:b029:142:2501:3973 with SMTP id r28-20020aa7989c0000b029014225013973mr12960696pfl.56.1600370822186; Thu, 17 Sep 2020 12:27:02 -0700 (PDT) Received: from localhost.localdomain ([103.248.31.177]) by smtp.googlemail.com with ESMTPSA id x20sm388190pfr.190.2020.09.17.12.26.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Sep 2020 12:27:01 -0700 (PDT) From: Amey Narkhede To: chaotian.jing@mediatek.com Cc: ulf.hansson@linaro.org, matthias.bgg@gmail.com, p.zabel@pengutronix.de, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, ameynarkhede03@gmail.com Subject: [PATCH] mmc: mediatek: Drop pointer to mmc_host from msdc_host Date: Fri, 18 Sep 2020 00:56:25 +0530 Message-Id: <20200917192624.548720-1-ameynarkhede03@gmail.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The MediaTek MMC driver uses pointer to get from private msdc_host structure to the generic mmc_host structure. However mmc_host always precedes msdc_host in memory so compute its address with a subtraction (which is cheaper than a dereference) using mmc_from_priv() and drop the extra pointer. Signed-off-by: Amey Narkhede --- drivers/mmc/host/mtk-sd.c | 45 ++++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 20 deletions(-) -- 2.28.0 diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index b0c27944db7f..bbd9064e3e4a 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -397,7 +397,6 @@ struct msdc_delay_phase { struct msdc_host { struct device *dev; const struct mtk_mmc_compatible *dev_comp; - struct mmc_host *mmc; /* mmc structure */ int cmd_rsp; spinlock_t lock; @@ -734,14 +733,15 @@ static void msdc_unprepare_data(struct msdc_host *host, struct mmc_request *mrq) static u64 msdc_timeout_cal(struct msdc_host *host, u64 ns, u64 clks) { + struct mmc_host *mmc = mmc_from_priv(host); u64 timeout, clk_ns; u32 mode = 0; - if (host->mmc->actual_clock == 0) { + if (mmc->actual_clock == 0) { timeout = 0; } else { clk_ns = 1000000000ULL; - do_div(clk_ns, host->mmc->actual_clock); + do_div(clk_ns, mmc->actual_clock); timeout = ns + clk_ns - 1; do_div(timeout, clk_ns); timeout += clks; @@ -802,6 +802,7 @@ static void msdc_ungate_clock(struct msdc_host *host) static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) { + struct mmc_host *mmc = mmc_from_priv(host); u32 mode; u32 flags; u32 div; @@ -811,7 +812,7 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) if (!hz) { dev_dbg(host->dev, "set mclk to 0\n"); host->mclk = 0; - host->mmc->actual_clock = 0; + mmc->actual_clock = 0; sdr_clr_bits(host->base + MSDC_CFG, MSDC_CFG_CKPDN); return; } @@ -890,7 +891,7 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) while (!(readl(host->base + MSDC_CFG) & MSDC_CFG_CKSTB)) cpu_relax(); sdr_set_bits(host->base + MSDC_CFG, MSDC_CFG_CKPDN); - host->mmc->actual_clock = sclk; + mmc->actual_clock = sclk; host->mclk = hz; host->timing = timing; /* need because clk changed. */ @@ -901,7 +902,7 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) * mmc_select_hs400() will drop to 50Mhz and High speed mode, * tune result of hs200/200Mhz is not suitable for 50Mhz */ - if (host->mmc->actual_clock <= 52000000) { + if (mmc->actual_clock <= 52000000) { writel(host->def_tune_para.iocon, host->base + MSDC_IOCON); if (host->top_base) { writel(host->def_tune_para.emmc_top_control, @@ -932,7 +933,7 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) sdr_set_field(host->base + tune_reg, MSDC_PAD_TUNE_CMDRRDLY, host->hs400_cmd_int_delay); - dev_dbg(host->dev, "sclk: %d, timing: %d\n", host->mmc->actual_clock, + dev_dbg(host->dev, "sclk: %d, timing: %d\n", mmc->actual_clock, timing); } @@ -967,6 +968,7 @@ static inline u32 msdc_cmd_find_resp(struct msdc_host *host, static inline u32 msdc_cmd_prepare_raw_cmd(struct msdc_host *host, struct mmc_request *mrq, struct mmc_command *cmd) { + struct mmc_host *mmc = mmc_from_priv(host); /* rawcmd : * vol_swt << 30 | auto_cmd << 28 | blklen << 16 | go_irq << 15 | * stop << 14 | rw << 13 | dtype << 11 | rsptyp << 7 | brk << 6 | opcode @@ -993,7 +995,7 @@ static inline u32 msdc_cmd_prepare_raw_cmd(struct msdc_host *host, struct mmc_data *data = cmd->data; if (mmc_op_multi(opcode)) { - if (mmc_card_mmc(host->mmc->card) && mrq->sbc && + if (mmc_card_mmc(mmc->card) && mrq->sbc && !(mrq->sbc->arg & 0xFFFF0000)) rawcmd |= 0x2 << 28; /* AutoCMD23 */ } @@ -1070,9 +1072,10 @@ static int msdc_auto_cmd_done(struct msdc_host *host, int events, */ static void msdc_recheck_sdio_irq(struct msdc_host *host) { + struct mmc_host *mmc = mmc_from_priv(host); u32 reg_int, reg_inten, reg_ps; - if (host->mmc->caps & MMC_CAP_SDIO_IRQ) { + if (mmc->caps & MMC_CAP_SDIO_IRQ) { reg_inten = readl(host->base + MSDC_INTEN); if (reg_inten & MSDC_INTEN_SDIOIRQ) { reg_int = readl(host->base + MSDC_INT); @@ -1080,7 +1083,7 @@ static void msdc_recheck_sdio_irq(struct msdc_host *host) if (!(reg_int & MSDC_INT_SDIOIRQ || reg_ps & MSDC_PS_DATA1)) { __msdc_enable_sdio_irq(host, 0); - sdio_signal_irq(host->mmc); + sdio_signal_irq(mmc); } } } @@ -1113,7 +1116,7 @@ static void msdc_request_done(struct msdc_host *host, struct mmc_request *mrq) msdc_unprepare_data(host, mrq); if (host->error) msdc_reset_hw(host); - mmc_request_done(host->mmc, mrq); + mmc_request_done(mmc_from_priv(host), mrq); if (host->dev_comp->recheck_sdio_irq) msdc_recheck_sdio_irq(host); } @@ -1500,6 +1503,7 @@ static void msdc_enable_sdio_irq(struct mmc_host *mmc, int enb) static irqreturn_t msdc_cmdq_irq(struct msdc_host *host, u32 intsts) { + struct mmc_host *mmc = mmc_from_priv(host); int cmd_err = 0, dat_err = 0; if (intsts & MSDC_INT_RSPCRCERR) { @@ -1523,12 +1527,13 @@ static irqreturn_t msdc_cmdq_irq(struct msdc_host *host, u32 intsts) cmd_err, dat_err, intsts); } - return cqhci_irq(host->mmc, 0, cmd_err, dat_err); + return cqhci_irq(mmc, 0, cmd_err, dat_err); } static irqreturn_t msdc_irq(int irq, void *dev_id) { struct msdc_host *host = (struct msdc_host *) dev_id; + struct mmc_host *mmc = mmc_from_priv(host); while (true) { unsigned long flags; @@ -1551,18 +1556,18 @@ static irqreturn_t msdc_irq(int irq, void *dev_id) spin_unlock_irqrestore(&host->lock, flags); if ((events & event_mask) & MSDC_INT_SDIOIRQ) - sdio_signal_irq(host->mmc); + sdio_signal_irq(mmc); if ((events & event_mask) & MSDC_INT_CDSC) { if (host->internal_cd) - mmc_detect_change(host->mmc, msecs_to_jiffies(20)); + mmc_detect_change(mmc, msecs_to_jiffies(20)); events &= ~MSDC_INT_CDSC; } if (!(events & (event_mask & ~MSDC_INT_SDIOIRQ))) break; - if ((host->mmc->caps2 & MMC_CAP2_CQE) && + if ((mmc->caps2 & MMC_CAP2_CQE) && (events & MSDC_INT_CMDQ)) { msdc_cmdq_irq(host, events); /* clear interrupts */ @@ -2434,7 +2439,6 @@ static int msdc_drv_probe(struct platform_device *pdev) host->dev = &pdev->dev; host->dev_comp = of_device_get_match_data(&pdev->dev); - host->mmc = mmc; host->src_clk_freq = clk_get_rate(host->src_clk); /* Set host parameters to mmc */ mmc->ops = &mt_msdc_ops; @@ -2475,7 +2479,7 @@ static int msdc_drv_probe(struct platform_device *pdev) mmc_dev(mmc)->dma_mask = &host->dma_mask; if (mmc->caps2 & MMC_CAP2_CQE) { - host->cq_host = devm_kzalloc(host->mmc->parent, + host->cq_host = devm_kzalloc(mmc->parent, sizeof(*host->cq_host), GFP_KERNEL); if (!host->cq_host) { @@ -2560,7 +2564,7 @@ static int msdc_drv_remove(struct platform_device *pdev) pm_runtime_get_sync(host->dev); platform_set_drvdata(pdev, NULL); - mmc_remove_host(host->mmc); + mmc_remove_host(mmc); msdc_deinit_hw(host); msdc_gate_clock(host); @@ -2572,7 +2576,7 @@ static int msdc_drv_remove(struct platform_device *pdev) dma_free_coherent(&pdev->dev, MAX_BD_NUM * sizeof(struct mt_bdma_desc), host->dma.bd, host->dma.bd_addr); - mmc_free_host(host->mmc); + mmc_free_host(mmc); return 0; } @@ -2607,6 +2611,7 @@ static void msdc_save_reg(struct msdc_host *host) static void msdc_restore_reg(struct msdc_host *host) { + struct mmc_host *mmc = mmc_from_priv(host); u32 tune_reg = host->dev_comp->pad_tune_reg; writel(host->save_para.msdc_cfg, host->base + MSDC_CFG); @@ -2631,7 +2636,7 @@ static void msdc_restore_reg(struct msdc_host *host) writel(host->save_para.pad_tune, host->base + tune_reg); } - if (sdio_irq_claimed(host->mmc)) + if (sdio_irq_claimed(mmc)) __msdc_enable_sdio_irq(host, 1); }