From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Liao Subject: [PATCH 1/2] clk: mediatek: Add root clocks support for Mediatek SoC. Date: Fri, 10 Jul 2015 17:16:02 +0800 Message-ID: <1436519763-3195-2-git-send-email-jamesjj.liao@mediatek.com> References: <1436519763-3195-1-git-send-email-jamesjj.liao@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1436519763-3195-1-git-send-email-jamesjj.liao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Matthias Brugger , Mike Turquette , Stephen Boyd , Heiko Stubner Cc: srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, Daniel Kurtz , Ricky Liang , Rob Herring , Sascha Hauer , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, James Liao List-Id: devicetree@vger.kernel.org This patch adds root clocks support by using CCF fixed-rate clock implementation. Signed-off-by: James Liao --- drivers/clk/mediatek/clk-mtk.c | 23 +++++++++++++++++++++++ drivers/clk/mediatek/clk-mtk.h | 17 ++++++++++++++++- 2 files changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c index 18444ae..4ac80d3 100644 --- a/drivers/clk/mediatek/clk-mtk.c +++ b/drivers/clk/mediatek/clk-mtk.c @@ -49,6 +49,29 @@ err_out: return NULL; } +void mtk_clk_register_root_clks(const struct mtk_root_clk *clks, int num, + struct clk_onecell_data *clk_data) +{ + int i; + struct clk *clk; + + for (i = 0; i < num; i++) { + const struct mtk_root_clk *rc = &clks[i]; + + clk = clk_register_fixed_rate(NULL, rc->name, NULL, + CLK_IS_ROOT, rc->rate); + + if (IS_ERR(clk)) { + pr_err("Failed to register clk %s: %ld\n", + rc->name, PTR_ERR(clk)); + continue; + } + + if (clk_data) + clk_data->clks[rc->id] = clk; + } +} + void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, int num, struct clk_onecell_data *clk_data) { diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h index 9dda9d8..d8d8b06 100644 --- a/drivers/clk/mediatek/clk-mtk.h +++ b/drivers/clk/mediatek/clk-mtk.h @@ -25,6 +25,21 @@ #define MHZ (1000 * 1000) +struct mtk_root_clk { + int id; + const char *name; + unsigned long rate; +}; + +#define ROOT_CLK(_id, _name, _rate) { \ + .id = _id, \ + .name = _name, \ + .rate = _rate, \ + } + +void mtk_clk_register_root_clks(const struct mtk_root_clk *clks, + int num, struct clk_onecell_data *clk_data); + struct mtk_fixed_factor { int id; const char *name; @@ -41,7 +56,7 @@ struct mtk_fixed_factor { .div = _div, \ } -extern void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, +void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, int num, struct clk_onecell_data *clk_data); struct mtk_composite { -- 1.8.1.1.dirty -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html