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[80.180.23.57]) by smtp.gmail.com with ESMTPSA id z4-20020a17090655c400b0083ffb81f01esm10765438ejp.136.2022.12.31.02.47.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 31 Dec 2022 02:47:52 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: tommaso.merciai@amarulasolutions.com, linux-amarula@amarulasolutions.com, Chen-Yu Tsai , jagan@amarulasolutions.com, angelo@amarulasolutions.com, anthony@amarulasolutions.com, michael@amarulasolutions.com, Dario Binacchi , Abel Vesa , Fabio Estevam , Michael Turquette , NXP Linux Team , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Stephen Boyd , linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Subject: [RFC PATCH 02/11] clk: imx: add clk_hw based API imx_get_clk_hw_from_dt() Date: Sat, 31 Dec 2022 11:47:27 +0100 Message-Id: <20221231104736.12635-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20221231104736.12635-1-dario.binacchi@amarulasolutions.com> References: <20221231104736.12635-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Clock providers are recommended to use the struct clk_hw based API, so add an IMX provider helper to get clk_hw from device tree node name. This is a preparation patch for the upcoming support to setup clocks directly from the device tree. Signed-off-by: Dario Binacchi --- drivers/clk/imx/clk.c | 21 +++++++++++++++++++++ drivers/clk/imx/clk.h | 3 +++ 2 files changed, 24 insertions(+) diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c index b636cc099d96..6ae122ccd83e 100644 --- a/drivers/clk/imx/clk.c +++ b/drivers/clk/imx/clk.c @@ -68,6 +68,27 @@ void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count) } EXPORT_SYMBOL_GPL(imx_check_clk_hws); +struct clk_hw *imx_get_clk_hw_from_dt(struct device_node *np, + const char *name) +{ + struct of_phandle_args clkspec; + struct clk *clk; + + clkspec.np = of_find_node_by_name(np, name); + if (clkspec.np) { + clk = of_clk_get_from_provider(&clkspec); + if (!IS_ERR(clk)) { + pr_debug("%s: got %s clock\n", __func__, name); + of_node_put(clkspec.np); + return __clk_get_hw(clk); + } + } + + pr_err("%s: failed to %s clock\n", __func__, name); + return ERR_PTR(-ENODEV); +} +EXPORT_SYMBOL_GPL(imx_get_clk_hw_from_dt); + static struct clk *imx_obtain_fixed_clock_from_dt(const char *name) { struct of_phandle_args phandle; diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 86538c990a0d..a0e6b8357eb7 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -294,6 +294,9 @@ struct clk_hw *clk_hw_register_gate2(struct device *dev, const char *name, u8 clk_gate_flags, spinlock_t *lock, unsigned int *share_count); +struct clk_hw *imx_get_clk_hw_from_dt(struct device_node *np, + const char *name); + struct clk * imx_obtain_fixed_clock( const char *name, unsigned long rate);