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[2.139.157.249]) by mx.google.com with ESMTPSA id q2sm1903711wjz.15.2015.06.16.07.23.47 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 16 Jun 2015 07:23:48 -0700 (PDT) From: Matthias Brugger To: mturquette@gmail.com, sboyd@codeaurora.org, matthias.bgg@gmail.com Subject: [PATCH v4 2/3] clk: mediatek: Add support for clk-mux using regmap Date: Tue, 16 Jun 2015 16:23:34 +0200 Message-Id: <1434464615-9080-3-git-send-email-matthias.bgg@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1434464615-9080-1-git-send-email-matthias.bgg@gmail.com> References: <1434464615-9080-1-git-send-email-matthias.bgg@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150616_072412_276471_1030D676 X-CRM114-Status: GOOD ( 12.83 ) X-Spam-Score: -0.8 (/) Cc: jamesjj.liao@mediatek.com, heiko@sntech.de, manabian@gmail.com, linux-kernel@vger.kernel.org, henryc.chen@mediatek.com, linux-clk@vger.kernel.org, linux-mediatek@lists.infradead.org, p.zabel@pengutronix.de, s.hauer@pengutronix.de, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patches adds support for the mediatek clocks to be able to register and use a clk-mux wich relies on regmap. Signed-off-by: Matthias Brugger --- drivers/clk/mediatek/clk-mtk.c | 37 +++++++++++++++++++++++++++++++++++++ drivers/clk/mediatek/clk-mtk.h | 26 ++++++++++++++++++++++++++ 2 files changed, 63 insertions(+) diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c index 18444ae..cf953a8 100644 --- a/drivers/clk/mediatek/clk-mtk.c +++ b/drivers/clk/mediatek/clk-mtk.c @@ -111,6 +111,43 @@ int mtk_clk_register_gates(struct device_node *node, const struct mtk_gate *clks return 0; } +int mtk_clk_regm_register_mux(struct device_node *node, + const struct mtk_regm_mux *clks, int num, + struct clk_onecell_data *clk_data) +{ + int i; + struct clk *clk; + struct regmap *regmap; + + if (!clk_data) + return -ENOMEM; + + regmap = syscon_node_to_regmap(node); + if (IS_ERR(regmap)) { + pr_err("Cannot find regmap for %s: %ld\n", node->full_name, + PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + for (i = 0; i < num; i++) { + const struct mtk_regm_mux *mux = &clks[i]; + + clk = clk_regm_register_mux(NULL, mux->name, mux->parent_names, + mux->num_parents, 0, regmap, + mux->mux_offset, mux->mux_shift, + mux->mux_width, mux->flags, NULL); + if (IS_ERR(clk)) { + pr_err("Failed to register clk mux %s: %ld\n", + mux->name, PTR_ERR(clk)); + continue; + } + + clk_data->clks[mux->id] = clk; + } + + return 0; +} + struct clk *mtk_clk_register_composite(const struct mtk_composite *mc, void __iomem *base, spinlock_t *lock) { diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h index 9dda9d8..6fe85ca 100644 --- a/drivers/clk/mediatek/clk-mtk.h +++ b/drivers/clk/mediatek/clk-mtk.h @@ -156,6 +156,32 @@ void __init mtk_clk_register_plls(struct device_node *node, const struct mtk_pll_data *plls, int num_plls, struct clk_onecell_data *clk_data); +struct mtk_regm_mux { + int id; + const char *name; + const char * const *parent_names; + u8 num_parents; + unsigned flags; + uint32_t mux_offset; + uint32_t mux_shift; + uint32_t mux_width; +}; + +int __init mtk_clk_regm_register_mux(struct device_node *node, + const struct mtk_regm_mux *clks, int num, + struct clk_onecell_data *clk_data); + +#define MUX_REGMAP(_id, _name, _parents, _offset, _shift, _width) { \ + .id = _id, \ + .name = _name, \ + .parent_names = _parents, \ + .num_parents = ARRAY_SIZE(_parents), \ + .flags = CLK_SET_RATE_PARENT, \ + .mux_offset = _offset, \ + .mux_shift = _shift, \ + .mux_width = _width, \ + } + #ifdef CONFIG_RESET_CONTROLLER void mtk_register_reset_controller(struct device_node *np, unsigned int num_regs, int regofs);