From patchwork Mon Apr 9 14:37:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yixun Lan X-Patchwork-Id: 10331563 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D41776022E for ; Mon, 9 Apr 2018 14:40:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C4E282897A for ; Mon, 9 Apr 2018 14:40:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B9128289B0; Mon, 9 Apr 2018 14:40:59 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0F41A2897A for ; Mon, 9 Apr 2018 14:40:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WgKmxMz+kPbJJvQGMDbjvYdWzpOUTa+fT1HQMzAzoL0=; b=bZZbp/9BWzY5f+ lzEdYBVXArCxGXmLuAl8+HpP1cMjO430aefXZ0LLWXwQplEWkjEEHjf61GjyyL7HCPVLj0TdgfC+Y 48z7El7gGm+pF2tWr0G8WmNzAXizmQthI0HT0+rVIs9ZnL7/oUy142GPQEoR2hQaHhixR4fZfSxZa shuLNlij47dTP6qlxGBwl/kalWy5GOvU0LyXXdvOhjVxVL61eYQzZ1yyl+R0fufs5/0g6KP4RzUBp t24GQBgieuh1/cDIkekKKLx4f/OpJBDhIxLbJIPrzPZfN2dg5dM+sUsQ+IekAkOevax7xH4NA33dH 10wZUQMvhhhtyEdWa1Ig==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f5XyU-0007FM-HB; Mon, 09 Apr 2018 14:40:50 +0000 Received: from mail-sh2.amlogic.com ([58.32.228.45]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f5Xx8-00053M-Mt; Mon, 09 Apr 2018 14:39:28 +0000 Received: from ofmlt.linux-actions.org (10.18.20.235) by mail-sh2.amlogic.com (10.18.11.6) with Microsoft SMTP Server id 15.0.1320.4; Mon, 9 Apr 2018 22:38:28 +0800 From: Yixun Lan To: Neil Armstrong , Jerome Brunet , Kevin Hilman , Carlo Caione Subject: [PATCH v5 2/7] clk: meson: aoclk: refactor common code into dedicated file Date: Mon, 9 Apr 2018 22:37:44 +0800 Message-ID: <20180409143749.71197-3-yixun.lan@amlogic.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180409143749.71197-1-yixun.lan@amlogic.com> References: <20180409143749.71197-1-yixun.lan@amlogic.com> MIME-Version: 1.0 X-Originating-IP: [10.18.20.235] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180409_073926_989289_9CE42BF3 X-CRM114-Status: GOOD ( 20.33 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Herring , Stephen Boyd , Michael Turquette , Yixun Lan , linux-kernel@vger.kernel.org, Qiufang Dai , Philipp Zabel , linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP We try to refactor the common code into one dedicated file, while preparing to add new Meson-AXG aoclk driver, this would help us to better share the code by all aoclk drivers. Suggested-by: Jerome Brunet Signed-off-by: Yixun Lan --- drivers/clk/meson/Kconfig | 7 ++++ drivers/clk/meson/Makefile | 1 + drivers/clk/meson/gxbb-aoclk.c | 91 ++++++++++++++--------------------------- drivers/clk/meson/gxbb-aoclk.h | 7 ++++ drivers/clk/meson/meson-aoclk.c | 82 +++++++++++++++++++++++++++++++++++++ drivers/clk/meson/meson-aoclk.h | 35 ++++++++++++++++ 6 files changed, 163 insertions(+), 60 deletions(-) create mode 100644 drivers/clk/meson/meson-aoclk.c create mode 100644 drivers/clk/meson/meson-aoclk.h diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig index d5cbec522aec..fddc7ec7b820 100644 --- a/drivers/clk/meson/Kconfig +++ b/drivers/clk/meson/Kconfig @@ -3,6 +3,12 @@ config COMMON_CLK_AMLOGIC depends on OF depends on ARCH_MESON || COMPILE_TEST +config COMMON_CLK_MESON_AO + bool + depends on OF + depends on ARCH_MESON || COMPILE_TEST + select COMMON_CLK_REGMAP_MESON + config COMMON_CLK_REGMAP_MESON bool select REGMAP @@ -21,6 +27,7 @@ config COMMON_CLK_GXBB bool depends on COMMON_CLK_AMLOGIC select RESET_CONTROLLER + select COMMON_CLK_MESON_AO select COMMON_CLK_REGMAP_MESON select MFD_SYSCON help diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile index ffee82e60b7a..0a8df284f4e7 100644 --- a/drivers/clk/meson/Makefile +++ b/drivers/clk/meson/Makefile @@ -3,6 +3,7 @@ # obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-pll.o clk-mpll.o clk-audio-divider.o +obj-$(CONFIG_COMMON_CLK_MESON_AO) += meson-aoclk.o obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o gxbb-aoclk-32k.o obj-$(CONFIG_COMMON_CLK_AXG) += axg.o diff --git a/drivers/clk/meson/gxbb-aoclk.c b/drivers/clk/meson/gxbb-aoclk.c index eebb580b9e0f..f2e0640a7f74 100644 --- a/drivers/clk/meson/gxbb-aoclk.c +++ b/drivers/clk/meson/gxbb-aoclk.c @@ -52,39 +52,13 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -#include -#include #include #include #include -#include #include -#include -#include -#include #include "clk-regmap.h" #include "gxbb-aoclk.h" -struct gxbb_aoclk_reset_controller { - struct reset_controller_dev reset; - unsigned int *data; - struct regmap *regmap; -}; - -static int gxbb_aoclk_do_reset(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct gxbb_aoclk_reset_controller *reset = - container_of(rcdev, struct gxbb_aoclk_reset_controller, reset); - - return regmap_write(reset->regmap, AO_RTI_GEN_CNTL_REG0, - BIT(reset->data[id])); -} - -static const struct reset_control_ops gxbb_aoclk_reset_ops = { - .reset = gxbb_aoclk_do_reset, -}; - #define GXBB_AO_GATE(_name, _bit) \ static struct clk_regmap _name##_ao = { \ .data = &(struct clk_regmap_gate_data) { \ @@ -117,7 +91,7 @@ static struct aoclk_cec_32k cec_32k_ao = { }, }; -static unsigned int gxbb_aoclk_reset[] = { +static const unsigned int gxbb_aoclk_reset[] = { [RESET_AO_REMOTE] = 16, [RESET_AO_I2C_MASTER] = 18, [RESET_AO_I2C_SLAVE] = 19, @@ -135,7 +109,7 @@ static struct clk_regmap *gxbb_aoclk_gate[] = { [CLKID_AO_IR_BLASTER] = &ir_blaster_ao, }; -static struct clk_hw_onecell_data gxbb_aoclk_onecell_data = { +static const struct clk_hw_onecell_data gxbb_aoclk_onecell_data = { .hws = { [CLKID_AO_REMOTE] = &remote_ao.hw, [CLKID_AO_I2C_MASTER] = &i2c_master_ao.hw, @@ -145,58 +119,55 @@ static struct clk_hw_onecell_data gxbb_aoclk_onecell_data = { [CLKID_AO_IR_BLASTER] = &ir_blaster_ao.hw, [CLKID_AO_CEC_32K] = &cec_32k_ao.hw, }, - .num = 7, + .num = NR_CLKS, }; -static int gxbb_aoclkc_probe(struct platform_device *pdev) +static int gxbb_register_cec_ao_32k(struct platform_device *pdev) { - struct gxbb_aoclk_reset_controller *rstc; struct device *dev = &pdev->dev; struct regmap *regmap; - int ret, clkid; - - rstc = devm_kzalloc(dev, sizeof(*rstc), GFP_KERNEL); - if (!rstc) - return -ENOMEM; + int ret; regmap = syscon_node_to_regmap(of_get_parent(dev->of_node)); if (IS_ERR(regmap)) { dev_err(dev, "failed to get regmap\n"); - return -ENODEV; - } - - /* Reset Controller */ - rstc->regmap = regmap; - rstc->data = gxbb_aoclk_reset; - rstc->reset.ops = &gxbb_aoclk_reset_ops; - rstc->reset.nr_resets = ARRAY_SIZE(gxbb_aoclk_reset); - rstc->reset.of_node = dev->of_node; - ret = devm_reset_controller_register(dev, &rstc->reset); - - /* - * Populate regmap and register all clks - */ - for (clkid = 0; clkid < ARRAY_SIZE(gxbb_aoclk_gate); clkid++) { - gxbb_aoclk_gate[clkid]->map = regmap; - - ret = devm_clk_hw_register(dev, - gxbb_aoclk_onecell_data.hws[clkid]); - if (ret) - return ret; + return PTR_ERR(regmap); } /* Specific clocks */ cec_32k_ao.regmap = regmap; ret = devm_clk_hw_register(dev, &cec_32k_ao.hw); + if (ret) { + dev_err(&pdev->dev, "clk cec_32k_ao register failed.\n"); + return ret; + } + + return 0; +} + +static const struct meson_aoclk_data gxbb_aoclkc_data = { + .reset_reg = AO_RTI_GEN_CNTL_REG0, + .num_reset = ARRAY_SIZE(gxbb_aoclk_reset), + .reset = gxbb_aoclk_reset, + .num_clks = ARRAY_SIZE(gxbb_aoclk_gate), + .clks = gxbb_aoclk_gate, + .hw_data = &gxbb_aoclk_onecell_data, +}; + +static int gxbb_aoclkc_probe(struct platform_device *pdev) +{ + int ret = gxbb_register_cec_ao_32k(pdev); if (ret) return ret; - return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, - &gxbb_aoclk_onecell_data); + return meson_aoclkc_probe(pdev); } static const struct of_device_id gxbb_aoclkc_match_table[] = { - { .compatible = "amlogic,meson-gx-aoclkc" }, + { + .compatible = "amlogic,meson-gx-aoclkc", + .data = &gxbb_aoclkc_data, + }, { } }; diff --git a/drivers/clk/meson/gxbb-aoclk.h b/drivers/clk/meson/gxbb-aoclk.h index badc4c22b4ee..b031f1a0213e 100644 --- a/drivers/clk/meson/gxbb-aoclk.h +++ b/drivers/clk/meson/gxbb-aoclk.h @@ -8,6 +8,10 @@ #ifndef __GXBB_AOCLKC_H #define __GXBB_AOCLKC_H +#include "meson-aoclk.h" + +#define NR_CLKS 7 + /* AO Configuration Clock registers offsets */ #define AO_RTI_PWR_CNTL_REG1 0x0c #define AO_RTI_PWR_CNTL_REG0 0x10 @@ -26,4 +30,7 @@ struct aoclk_cec_32k { extern const struct clk_ops meson_aoclk_cec_32k_ops; +#include +#include + #endif /* __GXBB_AOCLKC_H */ diff --git a/drivers/clk/meson/meson-aoclk.c b/drivers/clk/meson/meson-aoclk.c new file mode 100644 index 000000000000..74338ef0a62b --- /dev/null +++ b/drivers/clk/meson/meson-aoclk.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Amlogic Meson-AXG Clock Controller Driver + * + * Copyright (c) 2016 BayLibre, SAS. + * Author: Neil Armstrong + * + * Copyright (c) 2018 Amlogic, inc. + * Author: Qiufang Dai + * Author: Yixun Lan + */ + +#include +#include +#include +#include +#include +#include "clk-regmap.h" +#include "meson-aoclk.h" + +static int meson_aoclk_do_reset(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct meson_aoclk_reset_controller *rstc = + container_of(rcdev, struct meson_aoclk_reset_controller, reset); + + return regmap_write(rstc->regmap, rstc->data->reset_reg, + BIT(rstc->data->reset[id])); +} + +static const struct reset_control_ops meson_aoclk_reset_ops = { + .reset = meson_aoclk_do_reset, +}; + +int meson_aoclkc_probe(struct platform_device *pdev) +{ + struct meson_aoclk_reset_controller *rstc; + struct meson_aoclk_data *data; + struct device *dev = &pdev->dev; + struct regmap *regmap; + int ret, clkid; + + data = (struct meson_aoclk_data *) of_device_get_match_data(dev); + if (!data) + return -ENODEV; + + rstc = devm_kzalloc(dev, sizeof(*rstc), GFP_KERNEL); + if (!rstc) + return -ENOMEM; + + regmap = syscon_node_to_regmap(of_get_parent(dev->of_node)); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to get regmap\n"); + return PTR_ERR(regmap); + } + + /* Reset Controller */ + rstc->data = data; + rstc->regmap = regmap; + rstc->reset.ops = &meson_aoclk_reset_ops; + rstc->reset.nr_resets = data->num_reset, + rstc->reset.of_node = dev->of_node; + ret = devm_reset_controller_register(dev, &rstc->reset); + if (ret) { + dev_err(dev, "failed to register reset controller\n"); + return ret; + } + + /* + * Populate regmap and register all clks + */ + for (clkid = 0; clkid < data->num_clks; clkid++) { + data->clks[clkid]->map = regmap; + + ret = devm_clk_hw_register(dev, data->hw_data->hws[clkid]); + if (ret) + return ret; + } + + return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, + (void *) data->hw_data); +} diff --git a/drivers/clk/meson/meson-aoclk.h b/drivers/clk/meson/meson-aoclk.h new file mode 100644 index 000000000000..ec59e027dd37 --- /dev/null +++ b/drivers/clk/meson/meson-aoclk.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ +/* + * Copyright (c) 2017 BayLibre, SAS + * Author: Neil Armstrong + * + * Copyright (c) 2018 Amlogic, inc. + * Author: Qiufang Dai + * Author: Yixun Lan + */ + +#ifndef __MESON_AOCLK_H__ +#define __MESON_AOCLK_H__ + +#include +#include +#include "clk-regmap.h" + +struct meson_aoclk_data { + const unsigned int reset_reg; + const int num_reset; + const unsigned int *reset; + int num_clks; + struct clk_regmap **clks; + const struct clk_hw_onecell_data *hw_data; +}; + +struct meson_aoclk_reset_controller { + struct reset_controller_dev reset; + const struct meson_aoclk_data *data; + struct regmap *regmap; +}; + +int meson_aoclkc_probe(struct platform_device *pdev); +#endif +