From: "A.s. Dong" <aisheng.dong@nxp.com> To: "linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org> Cc: "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "sboyd@kernel.org" <sboyd@kernel.org>, "mturquette@baylibre.com" <mturquette@baylibre.com>, "shawnguo@kernel.org" <shawnguo@kernel.org>, Fabio Estevam <fabio.estevam@nxp.com>, dl-linux-imx <linux-imx@nxp.com>, "kernel@pengutronix.de" <kernel@pengutronix.de>, "A.s. Dong" <aisheng.dong@nxp.com> Subject: [PATCH V5 8/9] clk: imx: scu: add scu clock gpr mux Date: Thu, 18 Oct 2018 16:54:11 +0000 [thread overview] Message-ID: <1539881347-20871-9-git-send-email-aisheng.dong@nxp.com> (raw) In-Reply-To: <1539881347-20871-1-git-send-email-aisheng.dong@nxp.com> Add scu based clock gpr mux. Unlike the normal scu mux, such muxes are controlled by GPR bits through SCU sc_misc_set_control API. Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Michael Turquette <mturquette@baylibre.com> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- ChangeLog: v4-v5: * remove one unnecessary debug message * drop explict casts * move scu clk files into imx top directory v3->v4: * scu headfile path update v2->v3: * structure name and api usage update v1->v2: * no changes except headfile name updated --- drivers/clk/imx/Makefile | 3 +- drivers/clk/imx/clk-mux-gpr-scu.c | 84 +++++++++++++++++++++++++++++++++++++++ drivers/clk/imx/clk-scu.h | 11 +++++ 3 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 drivers/clk/imx/clk-mux-gpr-scu.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 5f1cece..e0d327e 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -19,7 +19,8 @@ obj-$(CONFIG_MXC_CLK_SCU) += \ clk-divider-gpr-scu.o \ clk-gate-scu.o \ clk-gate-gpr-scu.o \ - clk-mux-scu.o + clk-mux-scu.o \ + clk-mux-gpr-scu.o obj-$(CONFIG_SOC_IMX1) += clk-imx1.o obj-$(CONFIG_SOC_IMX21) += clk-imx21.o diff --git a/drivers/clk/imx/clk-mux-gpr-scu.c b/drivers/clk/imx/clk-mux-gpr-scu.c new file mode 100644 index 0000000..441c53b --- /dev/null +++ b/drivers/clk/imx/clk-mux-gpr-scu.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * Dong Aisheng <aisheng.dong@nxp.com> + */ + +#include <linux/clk-provider.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/slab.h> + +#include "clk-scu.h" + +struct clk_mux_gpr_scu { + struct clk_hw hw; + u32 rsrc_id; + u8 gpr_id; +}; + +#define to_clk_mux_gpr_scu(_hw) container_of(_hw, struct clk_mux_gpr_scu, hw) + +static u8 clk_mux_gpr_scu_get_parent(struct clk_hw *hw) +{ + struct clk_mux_gpr_scu *gpr_mux = to_clk_mux_gpr_scu(hw); + u32 val = 0; + int ret; + + ret = imx_sc_misc_get_control(ccm_ipc_handle, gpr_mux->rsrc_id, + gpr_mux->gpr_id, &val); + if (ret) { + pr_err("%s: failed to get clock parent %d\n", + clk_hw_get_name(hw), ret); + return 0; + } + + return val; +} + +static int clk_mux_gpr_scu_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_mux_gpr_scu *gpr_mux = to_clk_mux_gpr_scu(hw); + + return imx_sc_misc_set_control(ccm_ipc_handle, gpr_mux->rsrc_id, + gpr_mux->gpr_id, index); +} + +static const struct clk_ops clk_mux_gpr_scu_ops = { + .get_parent = clk_mux_gpr_scu_get_parent, + .set_parent = clk_mux_gpr_scu_set_parent, +}; + +struct clk_hw *clk_register_mux_gpr_scu(const char *name, const char * const *parents, + int num_parents, unsigned long flags, + u32 rsrc_id, u8 gpr_id) +{ + struct clk_mux_gpr_scu *mux; + struct clk_init_data init; + struct clk_hw *hw; + int ret; + + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &clk_mux_gpr_scu_ops; + init.parent_names = parents; + init.num_parents = num_parents; + init.flags = flags; + + mux->hw.init = &init; + mux->rsrc_id = rsrc_id; + mux->gpr_id = gpr_id; + + hw = &mux->hw; + ret = clk_hw_register(NULL, hw); + if (ret) { + kfree(mux); + hw = ERR_PTR(ret); + } + + return hw; +} diff --git a/drivers/clk/imx/clk-scu.h b/drivers/clk/imx/clk-scu.h index 2a5a45e..bab6a7f 100644 --- a/drivers/clk/imx/clk-scu.h +++ b/drivers/clk/imx/clk-scu.h @@ -81,4 +81,15 @@ static inline struct clk_hw *imx_clk_mux_scu(const char *name, clk_type); } +struct clk_hw *clk_register_mux_gpr_scu(const char *name, const char * const *parents, + int num_parents, unsigned long flags, + u32 rsrc_id, u8 gpr_id); + +static inline struct clk_hw *imx_clk_mux_gpr_scu(const char *name, const char * const *parents, + int num_parents, u32 rsrc_id, u8 gpr_id) +{ + return clk_register_mux_gpr_scu(name, parents, num_parents, + CLK_SET_RATE_NO_REPARENT, rsrc_id, gpr_id); +} + #endif -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: aisheng.dong@nxp.com (A.s. Dong) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V5 8/9] clk: imx: scu: add scu clock gpr mux Date: Thu, 18 Oct 2018 16:54:11 +0000 [thread overview] Message-ID: <1539881347-20871-9-git-send-email-aisheng.dong@nxp.com> (raw) In-Reply-To: <1539881347-20871-1-git-send-email-aisheng.dong@nxp.com> Add scu based clock gpr mux. Unlike the normal scu mux, such muxes are controlled by GPR bits through SCU sc_misc_set_control API. Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Michael Turquette <mturquette@baylibre.com> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- ChangeLog: v4-v5: * remove one unnecessary debug message * drop explict casts * move scu clk files into imx top directory v3->v4: * scu headfile path update v2->v3: * structure name and api usage update v1->v2: * no changes except headfile name updated --- drivers/clk/imx/Makefile | 3 +- drivers/clk/imx/clk-mux-gpr-scu.c | 84 +++++++++++++++++++++++++++++++++++++++ drivers/clk/imx/clk-scu.h | 11 +++++ 3 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 drivers/clk/imx/clk-mux-gpr-scu.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 5f1cece..e0d327e 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -19,7 +19,8 @@ obj-$(CONFIG_MXC_CLK_SCU) += \ clk-divider-gpr-scu.o \ clk-gate-scu.o \ clk-gate-gpr-scu.o \ - clk-mux-scu.o + clk-mux-scu.o \ + clk-mux-gpr-scu.o obj-$(CONFIG_SOC_IMX1) += clk-imx1.o obj-$(CONFIG_SOC_IMX21) += clk-imx21.o diff --git a/drivers/clk/imx/clk-mux-gpr-scu.c b/drivers/clk/imx/clk-mux-gpr-scu.c new file mode 100644 index 0000000..441c53b --- /dev/null +++ b/drivers/clk/imx/clk-mux-gpr-scu.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * Dong Aisheng <aisheng.dong@nxp.com> + */ + +#include <linux/clk-provider.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/slab.h> + +#include "clk-scu.h" + +struct clk_mux_gpr_scu { + struct clk_hw hw; + u32 rsrc_id; + u8 gpr_id; +}; + +#define to_clk_mux_gpr_scu(_hw) container_of(_hw, struct clk_mux_gpr_scu, hw) + +static u8 clk_mux_gpr_scu_get_parent(struct clk_hw *hw) +{ + struct clk_mux_gpr_scu *gpr_mux = to_clk_mux_gpr_scu(hw); + u32 val = 0; + int ret; + + ret = imx_sc_misc_get_control(ccm_ipc_handle, gpr_mux->rsrc_id, + gpr_mux->gpr_id, &val); + if (ret) { + pr_err("%s: failed to get clock parent %d\n", + clk_hw_get_name(hw), ret); + return 0; + } + + return val; +} + +static int clk_mux_gpr_scu_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_mux_gpr_scu *gpr_mux = to_clk_mux_gpr_scu(hw); + + return imx_sc_misc_set_control(ccm_ipc_handle, gpr_mux->rsrc_id, + gpr_mux->gpr_id, index); +} + +static const struct clk_ops clk_mux_gpr_scu_ops = { + .get_parent = clk_mux_gpr_scu_get_parent, + .set_parent = clk_mux_gpr_scu_set_parent, +}; + +struct clk_hw *clk_register_mux_gpr_scu(const char *name, const char * const *parents, + int num_parents, unsigned long flags, + u32 rsrc_id, u8 gpr_id) +{ + struct clk_mux_gpr_scu *mux; + struct clk_init_data init; + struct clk_hw *hw; + int ret; + + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &clk_mux_gpr_scu_ops; + init.parent_names = parents; + init.num_parents = num_parents; + init.flags = flags; + + mux->hw.init = &init; + mux->rsrc_id = rsrc_id; + mux->gpr_id = gpr_id; + + hw = &mux->hw; + ret = clk_hw_register(NULL, hw); + if (ret) { + kfree(mux); + hw = ERR_PTR(ret); + } + + return hw; +} diff --git a/drivers/clk/imx/clk-scu.h b/drivers/clk/imx/clk-scu.h index 2a5a45e..bab6a7f 100644 --- a/drivers/clk/imx/clk-scu.h +++ b/drivers/clk/imx/clk-scu.h @@ -81,4 +81,15 @@ static inline struct clk_hw *imx_clk_mux_scu(const char *name, clk_type); } +struct clk_hw *clk_register_mux_gpr_scu(const char *name, const char * const *parents, + int num_parents, unsigned long flags, + u32 rsrc_id, u8 gpr_id); + +static inline struct clk_hw *imx_clk_mux_gpr_scu(const char *name, const char * const *parents, + int num_parents, u32 rsrc_id, u8 gpr_id) +{ + return clk_register_mux_gpr_scu(name, parents, num_parents, + CLK_SET_RATE_NO_REPARENT, rsrc_id, gpr_id); +} + #endif -- 2.7.4
next prev parent reply other threads:[~2018-10-18 16:54 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-10-18 16:53 [PATCH V5 0/9] clk: imx: add imx8qxp clock support A.s. Dong 2018-10-18 16:53 ` A.s. Dong 2018-10-18 16:53 ` [PATCH V5 1/9] clk: imx: add configuration option for mmio clks A.s. Dong 2018-10-18 16:53 ` A.s. Dong 2018-10-18 16:53 ` [PATCH V5 2/9] clk: imx: scu: add scu clock common part A.s. Dong 2018-10-18 16:53 ` A.s. Dong 2018-10-18 16:53 ` [PATCH V5 3/9] clk: imx: scu: add scu clock divider A.s. Dong 2018-10-18 16:53 ` A.s. Dong 2018-10-18 16:53 ` [PATCH V5 4/9] clk: imx: scu: add scu clock gpr divider A.s. Dong 2018-10-18 16:53 ` A.s. Dong 2018-10-18 16:54 ` [PATCH V5 5/9] clk: imx: scu: add scu clock gate A.s. Dong 2018-10-18 16:54 ` A.s. Dong 2018-10-18 16:54 ` [PATCH V5 6/9] clk: imx: scu: add scu clock gpr gate A.s. Dong 2018-10-18 16:54 ` A.s. Dong 2018-10-18 16:54 ` [PATCH V5 7/9] clk: imx: scu: add scu clock mux A.s. Dong 2018-10-18 16:54 ` A.s. Dong 2018-10-18 16:54 ` A.s. Dong [this message] 2018-10-18 16:54 ` [PATCH V5 8/9] clk: imx: scu: add scu clock gpr mux A.s. Dong 2018-10-18 16:54 ` [PATCH V5 9/9] clk: imx: add imx8qxp clk driver A.s. Dong 2018-10-18 16:54 ` A.s. Dong 2018-10-18 17:38 ` Stephen Boyd 2018-10-18 17:38 ` Stephen Boyd 2018-10-18 18:13 ` A.s. Dong 2018-10-18 18:13 ` A.s. Dong 2018-10-18 20:46 ` Stephen Boyd 2018-10-18 20:46 ` Stephen Boyd 2018-10-19 9:05 ` A.s. Dong 2018-10-19 9:05 ` A.s. Dong 2018-10-25 14:43 ` A.s. Dong 2018-10-25 14:43 ` A.s. Dong 2018-11-10 15:58 ` A.s. Dong 2018-11-10 15:58 ` A.s. Dong 2018-11-14 23:23 ` Stephen Boyd 2018-11-14 23:23 ` Stephen Boyd
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