From patchwork Fri May 5 21:45:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 679669 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5CF1AC77B7D for ; Fri, 5 May 2023 23:02:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229757AbjEEXB7 (ORCPT ); Fri, 5 May 2023 19:01:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229742AbjEEXB6 (ORCPT ); Fri, 5 May 2023 19:01:58 -0400 Received: from rere.qmqm.pl (rere.qmqm.pl [91.227.64.183]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F1B8172D; Fri, 5 May 2023 16:01:56 -0700 (PDT) Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4QCkkZ17jPzBr; Fri, 5 May 2023 23:45:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1683323126; bh=r7IodaLcY4l5PFjujTNz/NWXTsBnQiFM1+yqJZQUjOg=; h=Date:In-Reply-To:References:Subject:From:To:Cc:From; b=qCUjdfDvnYdipgc4D8wlq3SuV8Wr5Y0y+PzaFb5mOGqFCeA2sVIxs7Uurx9Y7u4CT fui5oCdE6yAXx78YZ97gvnJDrn/F27uv0nyhIbfCGFDN4rD/ViEbaivAn/l5G/4hT8 4vtH2N4MXqWZ+G+t2oATKMOShQbdIdtJRPS0AQUEr6tsrRVvSMg0r/jxznliK1TPaT MNbLXFT4F00pGJUKY202O0NhhbPi0KCONNvSNCgXR2NOrWUN8unb9Oz52ATEGX+g/S ubxR/tsoRJTGQ0pQ9CCeqwH+Pge0UVWphUnrGhxXqN3yxNKmsUDyQDgrrbCkzG0xI4 RMcmj4JIgIb/g== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.8 at mail Date: Fri, 05 May 2023 23:45:25 +0200 Message-Id: <44028f56a1d93602bae335df3a002bce755fb1dd.1683322608.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: Subject: [PATCH v3 2/2] i2c: tegra: allow VI support to be compiled out MIME-Version: 1.0 From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= To: Laxman Dewangan , Dmitry Osipenko , Thierry Reding , Jonathan Hunter Cc: linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Save a bit of code for older Tegra platforms by compiling out VI's I2C mode support that's used only for Tegra210. $ size i2c-tegra.o text data bss dec hex filename 10385 240 8 10633 2989 i2c-tegra.o (full) 9617 240 8 9865 2689 i2c-tegra.o (no-dvc) 9389 240 8 9637 25a5 i2c-tegra.o (no-vi) 8617 240 8 8865 22a1 i2c-tegra.o (no-vi,no-dvc) Signed-off-by: Michał Mirosław Reviewed-by: Dmitry Osipenko Reviewed-by: Wolfram Sang --- v3: add parentheses for IS_VI() macro value v2: remove KConfig symbol as per Dmitry Osipenko's suggestion. (Assuming that for Tegra210 the VI part will be used anyway.) --- drivers/i2c/busses/i2c-tegra.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 536ba5873333..142afe3dedfb 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -297,6 +297,7 @@ struct tegra_i2c_dev { }; #define IS_DVC(dev) (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && (dev)->is_dvc) +#define IS_VI(dev) (IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC) && (dev)->is_vi) static void dvc_writel(struct tegra_i2c_dev *i2c_dev, u32 val, unsigned int reg) @@ -317,7 +318,7 @@ static u32 tegra_i2c_reg_addr(struct tegra_i2c_dev *i2c_dev, unsigned int reg) { if (IS_DVC(i2c_dev)) reg += (reg >= I2C_TX_FIFO) ? 0x10 : 0x40; - else if (i2c_dev->is_vi) + else if (IS_VI(i2c_dev)) reg = 0xc00 + (reg << 2); return reg; @@ -446,7 +447,7 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev) u32 *dma_buf; int err; - if (i2c_dev->is_vi) + if (IS_VI(i2c_dev)) return 0; if (!i2c_dev->hw->has_apb_dma) { @@ -651,7 +652,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev) i2c_writel(i2c_dev, val, I2C_CNFG); i2c_writel(i2c_dev, 0, I2C_INT_MASK); - if (i2c_dev->is_vi) + if (IS_VI(i2c_dev)) tegra_i2c_vi_init(i2c_dev); switch (t->bus_freq_hz) { @@ -703,7 +704,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev) return err; } - if (!IS_DVC(i2c_dev) && !i2c_dev->is_vi) { + if (!IS_DVC(i2c_dev) && !IS_VI(i2c_dev)) { u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG); sl_cfg |= I2C_SL_CNFG_NACK | I2C_SL_CNFG_NEWSL; @@ -1642,7 +1643,9 @@ static const struct tegra_i2c_hw_feature tegra194_i2c_hw = { static const struct of_device_id tegra_i2c_of_match[] = { { .compatible = "nvidia,tegra194-i2c", .data = &tegra194_i2c_hw, }, { .compatible = "nvidia,tegra186-i2c", .data = &tegra186_i2c_hw, }, +#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC) { .compatible = "nvidia,tegra210-i2c-vi", .data = &tegra210_i2c_hw, }, +#endif { .compatible = "nvidia,tegra210-i2c", .data = &tegra210_i2c_hw, }, { .compatible = "nvidia,tegra124-i2c", .data = &tegra124_i2c_hw, }, { .compatible = "nvidia,tegra114-i2c", .data = &tegra114_i2c_hw, }, @@ -1669,7 +1672,8 @@ static void tegra_i2c_parse_dt(struct tegra_i2c_dev *i2c_dev) of_device_is_compatible(np, "nvidia,tegra20-i2c-dvc")) i2c_dev->is_dvc = true; - if (of_device_is_compatible(np, "nvidia,tegra210-i2c-vi")) + if (IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC) && + of_device_is_compatible(np, "nvidia,tegra210-i2c-vi")) i2c_dev->is_vi = true; } @@ -1698,7 +1702,7 @@ static int tegra_i2c_init_clocks(struct tegra_i2c_dev *i2c_dev) if (i2c_dev->hw == &tegra20_i2c_hw || i2c_dev->hw == &tegra30_i2c_hw) i2c_dev->clocks[i2c_dev->nclocks++].id = "fast-clk"; - if (i2c_dev->is_vi) + if (IS_VI(i2c_dev)) i2c_dev->clocks[i2c_dev->nclocks++].id = "slow"; err = devm_clk_bulk_get(i2c_dev->dev, i2c_dev->nclocks, @@ -1816,7 +1820,7 @@ static int tegra_i2c_probe(struct platform_device *pdev) * VI I2C device shouldn't be marked as IRQ-safe because VI I2C won't * be used for atomic transfers. */ - if (!i2c_dev->is_vi) + if (!IS_VI(i2c_dev)) pm_runtime_irq_safe(i2c_dev->dev); pm_runtime_enable(i2c_dev->dev); @@ -1890,7 +1894,7 @@ static int __maybe_unused tegra_i2c_runtime_resume(struct device *dev) * power ON/OFF during runtime PM resume/suspend, meaning that * controller needs to be re-initialized after power ON. */ - if (i2c_dev->is_vi) { + if (IS_VI(i2c_dev)) { err = tegra_i2c_init(i2c_dev); if (err) goto disable_clocks;