From patchwork Tue Jul 25 14:30:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 706771 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 B2665C001DE for ; Tue, 25 Jul 2023 14:30:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232546AbjGYOas (ORCPT ); Tue, 25 Jul 2023 10:30:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233026AbjGYOai (ORCPT ); Tue, 25 Jul 2023 10:30:38 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 257582121; Tue, 25 Jul 2023 07:30:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690295429; x=1721831429; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9DXva5yu+5fK/rmzxRjDIGeABPn/wnXWDLkbXoHUWjw=; b=ltfdBoYO2NVEzEx/vTeuIltmCVYo4t+Sj4152WfXdOQdEaXWvOyuKtxg A1qY3bMmAW2YN535okzQsORcx2BEg4mbZrsGN3onp8bfwPaLA7ruFLA+i HO6LNlHTMtr985nL0exZQshQkq3d1+KZwL7jfJVYIfHjrHxzQL6SUz++6 lBy6Bu73eyv70c/cwZXt5Yhut9/hBcu6MhQJi4VEOw3jW9ShBMvZC/C/1 cWt0mTbgJKp9LVvnRrTMkjggy3ng/CC8UsNG4cKNwA5CLENT7WB1Z6rdv Nh27AP0Xc0zCI2vyfHsNx0YqGSci8Hxa5oDO0tOx2ZYIzWlxjZ/Yn1q6u Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="357742920" X-IronPort-AV: E=Sophos;i="6.01,230,1684825200"; d="scan'208";a="357742920" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 07:30:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="869491477" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 25 Jul 2023 07:30:20 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id CBA993C6; Tue, 25 Jul 2023 17:30:24 +0300 (EEST) From: Andy Shevchenko To: Jarkko Nikula , Mario Limonciello , Andy Shevchenko , Wolfram Sang , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Mika Westerberg , Jan Dabros , Andi Shyti Subject: [PATCH v1 6/9] i2c: designware: Consolidate firmware parsing and configure code Date: Tue, 25 Jul 2023 17:30:20 +0300 Message-Id: <20230725143023.86325-7-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.40.0.1.gaa8946217a0b In-Reply-To: <20230725143023.86325-1-andriy.shevchenko@linux.intel.com> References: <20230725143023.86325-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org We have two same code flows in the PCI and plaform drivers. Moreover, the flow requires the common code to export a few functions. Instead, consolidate that flow under new function called i2c_dw_fw_parse_and_configure() and drop unneeded exports. Signed-off-by: Andy Shevchenko --- drivers/i2c/busses/i2c-designware-common.c | 70 +++++++++++++++++++-- drivers/i2c/busses/i2c-designware-core.h | 9 +-- drivers/i2c/busses/i2c-designware-pcidrv.c | 10 +-- drivers/i2c/busses/i2c-designware-platdrv.c | 48 +------------- 4 files changed, 68 insertions(+), 69 deletions(-) diff --git a/drivers/i2c/busses/i2c-designware-common.c b/drivers/i2c/busses/i2c-designware-common.c index 222b530c0441..443426474cfc 100644 --- a/drivers/i2c/busses/i2c-designware-common.c +++ b/drivers/i2c/busses/i2c-designware-common.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -188,7 +189,7 @@ static const u32 supported_speeds[] = { I2C_MAX_STANDARD_MODE_FREQ, }; -int i2c_dw_validate_speed(struct dw_i2c_dev *dev) +static int i2c_dw_validate_speed(struct dw_i2c_dev *dev) { struct i2c_timings *t = &dev->timings; unsigned int i; @@ -208,7 +209,49 @@ int i2c_dw_validate_speed(struct dw_i2c_dev *dev) return -EINVAL; } -EXPORT_SYMBOL_GPL(i2c_dw_validate_speed); + +#ifdef CONFIG_OF + +#include + +#define MSCC_ICPU_CFG_TWI_DELAY 0x0 +#define MSCC_ICPU_CFG_TWI_DELAY_ENABLE BIT(0) +#define MSCC_ICPU_CFG_TWI_SPIKE_FILTER 0x4 + +static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev) +{ + writel((dev->sda_hold_time << 1) | MSCC_ICPU_CFG_TWI_DELAY_ENABLE, + dev->ext + MSCC_ICPU_CFG_TWI_DELAY); + + return 0; +} + +static void i2c_dw_of_do_configure(struct dw_i2c_dev *dev, struct device *device) +{ + struct platform_device *pdev = dev_is_platform(device) ? to_platform_device(device) : NULL; + + switch (dev->flags & MODEL_MASK) { + case MODEL_MSCC_OCELOT: + dev->ext = devm_platform_ioremap_resource(pdev, 1); + if (!IS_ERR(dev->ext)) + dev->set_sda_hold_time = mscc_twi_set_sda_hold_time; + break; + default: + break; + } +} + +static void i2c_dw_of_configure(struct dw_i2c_dev *dev) +{ + if (dev_of_node(dev->dev)) + i2c_dw_of_do_configure(dev, dev->dev); +} + +#else /* CONFIG_OF */ + +static inline void i2c_dw_of_configure(struct dw_i2c_dev *dev) { } + +#endif /* CONFIG_OF */ #ifdef CONFIG_ACPI @@ -286,12 +329,11 @@ static void i2c_dw_acpi_do_configure(struct dw_i2c_dev *dev, struct device *devi } } -void i2c_dw_acpi_configure(struct dw_i2c_dev *dev) +static void i2c_dw_acpi_configure(struct dw_i2c_dev *dev) { if (has_acpi_companion(dev->dev)) i2c_dw_acpi_do_configure(dev, dev->dev); } -EXPORT_SYMBOL_GPL(i2c_dw_acpi_configure); static u32 i2c_dw_acpi_round_bus_speed(struct device *device) { @@ -313,11 +355,13 @@ static u32 i2c_dw_acpi_round_bus_speed(struct device *device) #else /* CONFIG_ACPI */ +static inline void i2c_dw_acpi_configure(struct dw_i2c_dev *dev) { } + static inline u32 i2c_dw_acpi_round_bus_speed(struct device *device) { return 0; } #endif /* CONFIG_ACPI */ -void i2c_dw_adjust_bus_speed(struct dw_i2c_dev *dev) +static void i2c_dw_adjust_bus_speed(struct dw_i2c_dev *dev) { u32 acpi_speed = i2c_dw_acpi_round_bus_speed(dev->dev); struct i2c_timings *t = &dev->timings; @@ -333,7 +377,21 @@ void i2c_dw_adjust_bus_speed(struct dw_i2c_dev *dev) else t->bus_freq_hz = I2C_MAX_FAST_MODE_FREQ; } -EXPORT_SYMBOL_GPL(i2c_dw_adjust_bus_speed); + +int i2c_dw_fw_parse_and_configure(struct dw_i2c_dev *dev) +{ + struct i2c_timings *t = &dev->timings; + + i2c_parse_fw_timings(dev->dev, t, false); + + i2c_dw_adjust_bus_speed(dev); + + i2c_dw_of_configure(dev); + i2c_dw_acpi_configure(dev); + + return i2c_dw_validate_speed(dev); +} +EXPORT_SYMBOL_GPL(i2c_dw_fw_parse_and_configure); u32 i2c_dw_scl_hcnt(u32 ic_clk, u32 tSYMBOL, u32 tf, int cond, int offset) { diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index f0c683ad860f..8547590fc91b 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -392,11 +392,4 @@ int i2c_dw_baytrail_probe_lock_support(struct dw_i2c_dev *dev); int i2c_dw_amdpsp_probe_lock_support(struct dw_i2c_dev *dev); #endif -int i2c_dw_validate_speed(struct dw_i2c_dev *dev); -void i2c_dw_adjust_bus_speed(struct dw_i2c_dev *dev); - -#if IS_ENABLED(CONFIG_ACPI) -void i2c_dw_acpi_configure(struct dw_i2c_dev *dev); -#else -static inline void i2c_dw_acpi_configure(struct dw_i2c_dev *dev) { } -#endif +int i2c_dw_fw_parse_and_configure(struct dw_i2c_dev *dev); diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c index a42a47e0032d..28a60fdb9ca2 100644 --- a/drivers/i2c/busses/i2c-designware-pcidrv.c +++ b/drivers/i2c/busses/i2c-designware-pcidrv.c @@ -252,7 +252,6 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev, int r; struct dw_pci_controller *controller; struct dw_scl_sda_cfg *cfg; - struct i2c_timings *t; if (id->driver_data >= ARRAY_SIZE(dw_pci_controllers)) return dev_err_probe(&pdev->dev, -EINVAL, @@ -287,9 +286,6 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev, dev->irq = pci_irq_vector(pdev, 0); dev->flags |= controller->flags; - t = &dev->timings; - i2c_parse_fw_timings(&pdev->dev, t, false); - pci_set_drvdata(pdev, dev); if (controller->setup) { @@ -300,11 +296,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev, } } - i2c_dw_adjust_bus_speed(dev); - - i2c_dw_acpi_configure(dev); - - r = i2c_dw_validate_speed(dev); + r = i2c_dw_fw_parse_and_configure(dev); if (r) { pci_free_irq_vectors(pdev); return r; diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index d2ffd041c0c7..c73cba7db65f 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include #include @@ -97,46 +96,11 @@ static int bt1_i2c_request_regs(struct dw_i2c_dev *dev) dev->map = devm_regmap_init(dev->dev, NULL, dev, &bt1_i2c_cfg); return PTR_ERR_OR_ZERO(dev->map); } - -#define MSCC_ICPU_CFG_TWI_DELAY 0x0 -#define MSCC_ICPU_CFG_TWI_DELAY_ENABLE BIT(0) -#define MSCC_ICPU_CFG_TWI_SPIKE_FILTER 0x4 - -static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev) -{ - writel((dev->sda_hold_time << 1) | MSCC_ICPU_CFG_TWI_DELAY_ENABLE, - dev->ext + MSCC_ICPU_CFG_TWI_DELAY); - - return 0; -} - -static void i2c_dw_of_do_configure(struct dw_i2c_dev *dev, struct device *device) -{ - struct platform_device *pdev = to_platform_device(device); - - switch (dev->flags & MODEL_MASK) { - case MODEL_MSCC_OCELOT: - dev->ext = devm_platform_ioremap_resource(pdev, 1); - if (!IS_ERR(dev->ext)) - dev->set_sda_hold_time = mscc_twi_set_sda_hold_time; - break; - default: - break; - } -} - -static void i2c_dw_of_configure(struct dw_i2c_dev *dev) -{ - if (dev_of_node(dev->dev)) - i2c_dw_of_do_configure(dev, dev->dev); -} #else static int bt1_i2c_request_regs(struct dw_i2c_dev *dev) { return -ENODEV; } - -static inline void i2c_dw_of_configure(struct dw_i2c_dev *dev) { } #endif static int txgbe_i2c_request_regs(struct dw_i2c_dev *dev) @@ -248,7 +212,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) { struct i2c_adapter *adap; struct dw_i2c_dev *dev; - struct i2c_timings *t; int irq, ret; irq = platform_get_irq(pdev, 0); @@ -277,15 +240,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) reset_control_deassert(dev->rst); - t = &dev->timings; - i2c_parse_fw_timings(&pdev->dev, t, false); - - i2c_dw_adjust_bus_speed(dev); - - i2c_dw_of_configure(dev); - i2c_dw_acpi_configure(dev); - - ret = i2c_dw_validate_speed(dev); + ret = i2c_dw_fw_parse_and_configure(dev); if (ret) goto exit_reset; @@ -313,6 +268,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) goto exit_reset; if (dev->clk) { + struct i2c_timings *t = &dev->timings; u64 clk_khz; dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;