From patchwork Fri Jun 11 08:45:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 1490809 X-Patchwork-Delegate: lokeshvutla@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=jG20o4jk; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4G1ZGD6HD4z9sW7 for ; Fri, 11 Jun 2021 18:47:00 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id C47D480219; Fri, 11 Jun 2021 10:46:08 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="jG20o4jk"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id BDB64800A5; Fri, 11 Jun 2021 10:45:50 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 3E8A780098 for ; Fri, 11 Jun 2021 10:45:46 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=kristo@kernel.org Received: by mail.kernel.org (Postfix) with ESMTPSA id F349F613C3; Fri, 11 Jun 2021 08:45:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1623401144; bh=WSINFD/Uzvy2U/F3M4Nt6RyO3vC5HGVVsS9Z1Kk9oTI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=jG20o4jkCUDSXGEXMfe6pAQ+wBGWH//JG4OcQP/3H6hzrHbtCvZyicG892Tdfar+L u7OuuygYF6FBis5ejOGdHmuzYlRMF4N8MGBzT24Np+EUh2owmH1gGJiPrY+3nUsoba 3DgqlsSnmxfKLgaE1EvF20ohGQyeV9gOVVYDXoNlvMc5iMInH0KUDOPYtVREtsAJHz eFfkqtDHoqWZkm4a4Mefny32ZZOME/RBRgx48ms+T3fLzAik2BfbU4E2LCHGvR5kWT s249TEJVtdDJFPVH6wTfYsAc8RvntIb299X+Q/NK0qndbahIfdQ5Ux3lebYbWMWCar MpTESpSdPTJVA== From: Tero Kristo To: lokeshvutla@ti.com, trini@konsulko.com, u-boot@lists.denx.de Subject: [PATCHv6 05/26] clk: fixed_rate: add API for directly registering fixed rate clocks Date: Fri, 11 Jun 2021 11:45:06 +0300 Message-Id: <20210611084527.7048-6-kristo@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210611084527.7048-1-kristo@kernel.org> References: <20210611084527.7048-1-kristo@kernel.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean From: Tero Kristo Current driver only supports registering fixed rate clocks from DT. Add new API which makes it possible to register fixed rate clocks directly from e.g. platform specific clock drivers. Reviewed-by: Peng Fan Signed-off-by: Tero Kristo Signed-off-by: Tero Kristo --- drivers/clk/clk_fixed_rate.c | 45 ++++++++++++++++++++++++++++++++++++ include/linux/clk-provider.h | 3 +++ 2 files changed, 48 insertions(+) diff --git a/drivers/clk/clk_fixed_rate.c b/drivers/clk/clk_fixed_rate.c index 09f9ef26a4..325a9b2dcf 100644 --- a/drivers/clk/clk_fixed_rate.c +++ b/drivers/clk/clk_fixed_rate.c @@ -9,6 +9,9 @@ #include #include +#define UBOOT_DM_CLK_FIXED_RATE "fixed_rate_clock" +#define UBOOT_DM_CLK_FIXED_RATE_RAW "fixed_rate_raw_clock" + static ulong clk_fixed_rate_get_rate(struct clk *clk) { return to_clk_fixed_rate(clk->dev)->fixed_rate; @@ -40,6 +43,15 @@ void clk_fixed_rate_ofdata_to_plat_(struct udevice *dev, clk->enable_count = 0; } +static ulong clk_fixed_rate_raw_get_rate(struct clk *clk) +{ + return container_of(clk, struct clk_fixed_rate, clk)->fixed_rate; +} + +const struct clk_ops clk_fixed_rate_raw_ops = { + .get_rate = clk_fixed_rate_raw_get_rate, +}; + static int clk_fixed_rate_of_to_plat(struct udevice *dev) { clk_fixed_rate_ofdata_to_plat_(dev, to_clk_fixed_rate(dev)); @@ -47,6 +59,32 @@ static int clk_fixed_rate_of_to_plat(struct udevice *dev) return 0; } +#if CONFIG_IS_ENABLED(CLK_CCF) +struct clk *clk_register_fixed_rate(struct device *dev, const char *name, + ulong rate) +{ + struct clk *clk; + struct clk_fixed_rate *fixed; + int ret; + + fixed = kzalloc(sizeof(*fixed), GFP_KERNEL); + if (!fixed) + return ERR_PTR(-ENOMEM); + + fixed->fixed_rate = rate; + + clk = &fixed->clk; + + ret = clk_register(clk, UBOOT_DM_CLK_FIXED_RATE_RAW, name, NULL); + if (ret) { + kfree(fixed); + return ERR_PTR(ret); + } + + return clk; +} +#endif + static const struct udevice_id clk_fixed_rate_match[] = { { .compatible = "fixed-clock", @@ -63,3 +101,10 @@ U_BOOT_DRIVER(fixed_clock) = { .ops = &clk_fixed_rate_ops, .flags = DM_FLAG_PRE_RELOC, }; + +U_BOOT_DRIVER(clk_fixed_rate_raw) = { + .name = UBOOT_DM_CLK_FIXED_RATE_RAW, + .id = UCLASS_CLK, + .ops = &clk_fixed_rate_raw_ops, + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 6fda14f5fe..9d296f240a 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -247,6 +247,9 @@ struct clk *clk_register_mux(struct device *dev, const char *name, void __iomem *reg, u8 shift, u8 width, u8 clk_mux_flags); +struct clk *clk_register_fixed_rate(struct device *dev, const char *name, + ulong rate); + const char *clk_hw_get_name(const struct clk *hw); ulong clk_generic_get_rate(struct clk *clk);