Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753132AbbEDVFM (ORCPT ); Mon, 4 May 2015 17:05:12 -0400 Received: from mail-wi0-f175.google.com ([209.85.212.175]:38104 "EHLO mail-wi0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751697AbbEDVEe (ORCPT ); Mon, 4 May 2015 17:04:34 -0400 From: Sebastian Hesselbarth To: Sebastian Hesselbarth Cc: Mike Turquette , Stephen Boyd , Jean-Francois Moine , Michael Welling , Russell King , Jason Cooper , Andrew Lunn , Gregory Clement , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/3] clk: si5351: Do not pass struct clk in platform_data Date: Mon, 4 May 2015 23:04:16 +0200 Message-Id: <1430773456-15203-4-git-send-email-sebastian.hesselbarth@gmail.com> In-Reply-To: <1430773456-15203-1-git-send-email-sebastian.hesselbarth@gmail.com> References: <1430773456-15203-1-git-send-email-sebastian.hesselbarth@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6830 Lines: 212 When registering clk-si5351 by platform_data, we should not pass struct clk for the reference clocks. Drop struct clk from platform_data and rework the driver to use devm_clk_get of named clock references. While at it, check for at least one valid input clock and properly prepare/ enable valid reference clocks. Signed-off-by: Sebastian Hesselbarth Reported-by: Michael Welling Reported-by: Jean-Francois Moine Reported-by: Russell King Tested-by: Michael Welling Tested-by: Jean-Francois Moine --- Changelog: v1->v2: - Reword parent clock check error message and add a comment about the required parent clocks per variant. (Suggested by Fabio Estevam) Cc: Mike Turquette Cc: Stephen Boyd Cc: Jean-Francois Moine Cc: Michael Welling Cc: Russell King Cc: Jason Cooper Cc: Andrew Lunn Cc: Gregory Clement Cc: linux-clk@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/clk/clk-si5351.c | 63 +++++++++++++++++++++++++----------- include/linux/platform_data/si5351.h | 4 --- 2 files changed, 45 insertions(+), 22 deletions(-) diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c index 44ea107cfc67..30335d3b99af 100644 --- a/drivers/clk/clk-si5351.c +++ b/drivers/clk/clk-si5351.c @@ -1128,13 +1128,6 @@ static int si5351_dt_parse(struct i2c_client *client, if (!pdata) return -ENOMEM; - pdata->clk_xtal = of_clk_get(np, 0); - if (!IS_ERR(pdata->clk_xtal)) - clk_put(pdata->clk_xtal); - pdata->clk_clkin = of_clk_get(np, 1); - if (!IS_ERR(pdata->clk_clkin)) - clk_put(pdata->clk_clkin); - /* * property silabs,pll-source : , [<..>] * allow to selectively set pll source @@ -1328,8 +1321,22 @@ static int si5351_i2c_probe(struct i2c_client *client, i2c_set_clientdata(client, drvdata); drvdata->client = client; drvdata->variant = variant; - drvdata->pxtal = pdata->clk_xtal; - drvdata->pclkin = pdata->clk_clkin; + drvdata->pxtal = devm_clk_get(&client->dev, "xtal"); + drvdata->pclkin = devm_clk_get(&client->dev, "clkin"); + + if (PTR_ERR(drvdata->pxtal) == -EPROBE_DEFER || + PTR_ERR(drvdata->pclkin) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + /* + * Check for valid parent clock: VARIANT_A and VARIANT_B need XTAL, + * VARIANT_C can have CLKIN instead. + */ + if (IS_ERR(drvdata->pxtal) && + (drvdata->variant != SI5351_VARIANT_C || IS_ERR(drvdata->pclkin))) { + dev_err(&client->dev, "missing parent clock\n"); + return -EINVAL; + } drvdata->regmap = devm_regmap_init_i2c(client, &si5351_regmap_config); if (IS_ERR(drvdata->regmap)) { @@ -1393,6 +1400,11 @@ static int si5351_i2c_probe(struct i2c_client *client, } } + if (!IS_ERR(drvdata->pxtal)) + clk_prepare_enable(drvdata->pxtal); + if (!IS_ERR(drvdata->pclkin)) + clk_prepare_enable(drvdata->pclkin); + /* register xtal input clock gate */ memset(&init, 0, sizeof(init)); init.name = si5351_input_names[0]; @@ -1407,7 +1419,8 @@ static int si5351_i2c_probe(struct i2c_client *client, clk = devm_clk_register(&client->dev, &drvdata->xtal); if (IS_ERR(clk)) { dev_err(&client->dev, "unable to register %s\n", init.name); - return PTR_ERR(clk); + ret = PTR_ERR(clk); + goto err_clk; } /* register clkin input clock gate */ @@ -1425,7 +1438,8 @@ static int si5351_i2c_probe(struct i2c_client *client, if (IS_ERR(clk)) { dev_err(&client->dev, "unable to register %s\n", init.name); - return PTR_ERR(clk); + ret = PTR_ERR(clk); + goto err_clk; } } @@ -1447,7 +1461,8 @@ static int si5351_i2c_probe(struct i2c_client *client, clk = devm_clk_register(&client->dev, &drvdata->pll[0].hw); if (IS_ERR(clk)) { dev_err(&client->dev, "unable to register %s\n", init.name); - return -EINVAL; + ret = PTR_ERR(clk); + goto err_clk; } /* register PLLB or VXCO (Si5351B) */ @@ -1471,7 +1486,8 @@ static int si5351_i2c_probe(struct i2c_client *client, clk = devm_clk_register(&client->dev, &drvdata->pll[1].hw); if (IS_ERR(clk)) { dev_err(&client->dev, "unable to register %s\n", init.name); - return -EINVAL; + ret = PTR_ERR(clk); + goto err_clk; } /* register clk multisync and clk out divider */ @@ -1492,8 +1508,10 @@ static int si5351_i2c_probe(struct i2c_client *client, num_clocks * sizeof(*drvdata->onecell.clks), GFP_KERNEL); if (WARN_ON(!drvdata->msynth || !drvdata->clkout || - !drvdata->onecell.clks)) - return -ENOMEM; + !drvdata->onecell.clks)) { + ret = -ENOMEM; + goto err_clk; + } for (n = 0; n < num_clocks; n++) { drvdata->msynth[n].num = n; @@ -1511,7 +1529,8 @@ static int si5351_i2c_probe(struct i2c_client *client, if (IS_ERR(clk)) { dev_err(&client->dev, "unable to register %s\n", init.name); - return -EINVAL; + ret = PTR_ERR(clk); + goto err_clk; } } @@ -1538,7 +1557,8 @@ static int si5351_i2c_probe(struct i2c_client *client, if (IS_ERR(clk)) { dev_err(&client->dev, "unable to register %s\n", init.name); - return -EINVAL; + ret = PTR_ERR(clk); + goto err_clk; } drvdata->onecell.clks[n] = clk; @@ -1557,10 +1577,17 @@ static int si5351_i2c_probe(struct i2c_client *client, &drvdata->onecell); if (ret) { dev_err(&client->dev, "unable to add clk provider\n"); - return ret; + goto err_clk; } return 0; + +err_clk: + if (!IS_ERR(drvdata->pxtal)) + clk_disable_unprepare(drvdata->pxtal); + if (!IS_ERR(drvdata->pclkin)) + clk_disable_unprepare(drvdata->pclkin); + return ret; } static const struct i2c_device_id si5351_i2c_ids[] = { diff --git a/include/linux/platform_data/si5351.h b/include/linux/platform_data/si5351.h index a947ab8b441a..533d9807e543 100644 --- a/include/linux/platform_data/si5351.h +++ b/include/linux/platform_data/si5351.h @@ -5,8 +5,6 @@ #ifndef __LINUX_PLATFORM_DATA_SI5351_H__ #define __LINUX_PLATFORM_DATA_SI5351_H__ -struct clk; - /** * enum si5351_pll_src - Si5351 pll clock source * @SI5351_PLL_SRC_DEFAULT: default, do not change eeprom config @@ -107,8 +105,6 @@ struct si5351_clkout_config { * @clkout: array of clkout configuration */ struct si5351_platform_data { - struct clk *clk_xtal; - struct clk *clk_clkin; enum si5351_pll_src pll_src[2]; struct si5351_clkout_config clkout[8]; }; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/