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J . Bottomley" , "Martin K . Petersen" , Alim Akhtar , Bart Van Assche Cc: linux-phy@lists.infradead.org, linux-scsi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Chanho Park Subject: [PATCH v2 1/3] phy: samsung-ufs: convert phy clk usage to clk_bulk API Date: Wed, 6 Jul 2022 11:02:53 +0900 Message-Id: <20220706020255.151177-2-chanho61.park@samsung.com> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220706020255.151177-1-chanho61.park@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrKJsWRmVeSWpSXmKPExsWy7bCmme7Xt0eSDFZvELV4MG8bm8W0Dz+Z LS7v17ZYdGMbk8WFpz1sFntfb2W32PT4GqvFhFXfWCxmnN/HZNF9fQebxfLj/5gsdt45wezA 43H5irfHplWdbB53ru1h85iw6ACjx+Yl9R4fn95i8ejbsorR4/iN7UwenzfJBXBGZdtkpCam pBYppOYl56dk5qXbKnkHxzvHm5oZGOoaWlqYKynkJeam2iq5+AToumXmAB2spFCWmFMKFApI LC5W0rezKcovLUlVyMgvLrFVSi1IySkwL9ArTswtLs1L18tLLbEyNDAwMgUqTMjOuHzwG3vB Lo+KzhefWBsY19t2MXJySAiYSEx538LcxcjFISSwg1Fiyfd9TBDOJ0aJzyuvMkI4nxkl1n/9 zAjT0t/2FapqF6PE9m/z2EESQgIfGSUONCSA2GwCuhJbnr8C6xYR2MEkcatlIguIwyywmVGi /epONpAqYYFAiUmNf5lAbBYBVYlpW/4DFXFw8ArYS7QfioTYJi+x4eB2FhCbU8BB4vfvXmYQ m1dAUOLkzCdgcWagmuats5kh6ldySPxaEwBhu0gc2vIB6mphiVfHt7BD2FISL/vboOxiiaWz PoF9IyHQwChxedsvNoiEscSsZ+2MIPcwC2hKrN+lD2JKCChLHLkFtZZPouPwX3aIMK9ER5sQ RKO6xIHt01kgbFmJ7jmfWSFKPCRmLIuBBNtkRom521YyTWBUmIXkmVlInpmFsHcBI/MqRrHU guLc9NRiowJDeAQn5+duYgSnXy3XHYyT337QO8TIxMF4iFGCg1lJhHfVpINJQrwpiZVVqUX5 8UWlOanFhxhNgSE9kVlKNDkfmAHySuINTSwNTMzMDM2NTA3MlcR5vVI2JAoJpCeWpGanphak FsH0MXFwSjUwTWU1kLRV/OC0ZzKjmYt86Te+yIPPQm/05yoKzQyqOhhySrv/8Y+vQmIRGYsX m9yvE+yxXneg9K+Y3FbBDqGwlPS2nRlM6zvMikPDug1sK9UyZGtv/JKIXdOVXXl13b3nbYda ra9dmBZ27ODjz+FTQr8/vbHutvCy9D2Ouhop39Mjv3L4LJqRcJB9b/Ja3QyGm3927J32YUHG JYWbGxbt/cWhMG2a/7kOvevrHvK9LJx/lvWw1OpKl8mV/EHs5Q7HlaaluaaeEn81Yaef+3dG Y8XaqAijebMqjrF909xzStDhwTyzmJwrj4Kc3zZbTdafKWMUGnabeV3FnTwl1xnHnaPfpO3f HlPwebWJz4YVSizFGYmGWsxFxYkA6kgCMUgEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrELMWRmVeSWpSXmKPExsWy7bCSvO6Xt0eSDNb+17Z4MG8bm8W0Dz+Z LS7v17ZYdGMbk8WFpz1sFntfb2W32PT4GqvFhFXfWCxmnN/HZNF9fQebxfLj/5gsdt45wezA 43H5irfHplWdbB53ru1h85iw6ACjx+Yl9R4fn95i8ejbsorR4/iN7UwenzfJBXBGcdmkpOZk lqUW6dslcGVcPviNvWCXR0Xni0+sDYzrbbsYOTkkBEwk+tu+MnUxcnEICexglNj89hYzREJW 4tm7HewQtrDE/ZYjrBBF7xklVl5eBpZgE9CV2PL8FSNIQkRgD5PEl3kbWEAcZoHtjBJT3l5n AakSFvCX+P99N1gHi4CqxLQt/4HiHBy8AvYS7YciITbIS2w4uB2snFPAQeL3716wK4SASu59 Wg0W5xUQlDg58wmYzQxU37x1NvMERoFZSFKzkKQWMDKtYpRMLSjOTc8tNiwwykst1ytOzC0u zUvXS87P3cQIjhYtrR2Me1Z90DvEyMTBeIhRgoNZSYR31aSDSUK8KYmVValF+fFFpTmpxYcY pTlYlMR5L3SdjBcSSE8sSc1OTS1ILYLJMnFwSjUwKTx99+HUXJGVnsGr58bKHHbP56gXZD7G ctS93duXXfff7pRXV/Zen8vC76P2Seao7IKzzDunbFjW7zktKF12+pSDjSadd2re32izmfFi as6Wfzcy2i/UlHN43y98bVLf8Jk93PCIm0N57KZuuYdrt3+ecWaOQ2OG27xSz42Zay4sm3X9 sUKvUPE3s6Qc0+gE4SixvjVtTPPOH5RX+r9/bZmtveaKsvZSw0W3r1k+ebcrx5NZ4eGPw0mB i3dOjrq/fLEPU9rDbypHBJnO2hxaX/BvLvNE5+nSsUvizY1vP5vYFmMgJvNgpU1yBk+l3uS6 U4dOt1sE5m/4LpS0061hXatlfJHJ36Oiy2/bcu+YpsRSnJFoqMVcVJwIAAB0qDoFAwAA X-CMS-MailID: 20220706020540epcas2p2895857d7b056a456b3cd02bd5dd967b5 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220706020540epcas2p2895857d7b056a456b3cd02bd5dd967b5 References: <20220706020255.151177-1-chanho61.park@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220705_190549_158212_C7558073 X-CRM114-Status: GOOD ( 25.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Instead of using separated clock manipulation, this converts the phy clock usage to be clk_bulk APIs. By using this, we can completely remove has_symbol_clk check and symbol clk variables. Furthermore, clk_get should be moved to probe because there is no need to get them in the phy_init callback. Signed-off-by: Chanho Park Reviewed-by: Krzysztof Kozlowski --- drivers/phy/samsung/phy-exynos7-ufs.c | 7 +- drivers/phy/samsung/phy-exynosautov9-ufs.c | 7 +- drivers/phy/samsung/phy-fsd-ufs.c | 7 +- drivers/phy/samsung/phy-samsung-ufs.c | 99 +++++----------------- drivers/phy/samsung/phy-samsung-ufs.h | 10 +-- 5 files changed, 42 insertions(+), 88 deletions(-) diff --git a/drivers/phy/samsung/phy-exynos7-ufs.c b/drivers/phy/samsung/phy-exynos7-ufs.c index 72854336f59d..a982e7c128c5 100644 --- a/drivers/phy/samsung/phy-exynos7-ufs.c +++ b/drivers/phy/samsung/phy-exynos7-ufs.c @@ -68,6 +68,10 @@ static const struct samsung_ufs_phy_cfg *exynos7_ufs_phy_cfgs[CFG_TAG_MAX] = { [CFG_POST_PWR_HS] = exynos7_post_pwr_hs_cfg, }; +static const char * const exynos7_ufs_phy_clks[] = { + "tx0_symbol_clk", "rx0_symbol_clk", "rx1_symbol_clk", "ref_clk", +}; + const struct samsung_ufs_phy_drvdata exynos7_ufs_phy = { .cfgs = exynos7_ufs_phy_cfgs, .isol = { @@ -75,6 +79,7 @@ const struct samsung_ufs_phy_drvdata exynos7_ufs_phy = { .mask = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK, .en = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN, }, - .has_symbol_clk = 1, + .clk_list = exynos7_ufs_phy_clks, + .num_clks = ARRAY_SIZE(exynos7_ufs_phy_clks), .cdr_lock_status_offset = EXYNOS7_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS, }; diff --git a/drivers/phy/samsung/phy-exynosautov9-ufs.c b/drivers/phy/samsung/phy-exynosautov9-ufs.c index 2b256070d657..49e2bcbef0b4 100644 --- a/drivers/phy/samsung/phy-exynosautov9-ufs.c +++ b/drivers/phy/samsung/phy-exynosautov9-ufs.c @@ -57,6 +57,10 @@ static const struct samsung_ufs_phy_cfg *exynosautov9_ufs_phy_cfgs[CFG_TAG_MAX] [CFG_PRE_PWR_HS] = exynosautov9_pre_pwr_hs_cfg, }; +static const char * const exynosautov9_ufs_phy_clks[] = { + "ref_clk", +}; + const struct samsung_ufs_phy_drvdata exynosautov9_ufs_phy = { .cfgs = exynosautov9_ufs_phy_cfgs, .isol = { @@ -64,6 +68,7 @@ const struct samsung_ufs_phy_drvdata exynosautov9_ufs_phy = { .mask = EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL_MASK, .en = EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL_EN, }, - .has_symbol_clk = 0, + .clk_list = exynosautov9_ufs_phy_clks, + .num_clks = ARRAY_SIZE(exynosautov9_ufs_phy_clks), .cdr_lock_status_offset = EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS, }; diff --git a/drivers/phy/samsung/phy-fsd-ufs.c b/drivers/phy/samsung/phy-fsd-ufs.c index c78b6c16027d..d36cabd53434 100644 --- a/drivers/phy/samsung/phy-fsd-ufs.c +++ b/drivers/phy/samsung/phy-fsd-ufs.c @@ -46,6 +46,10 @@ static const struct samsung_ufs_phy_cfg *fsd_ufs_phy_cfgs[CFG_TAG_MAX] = { [CFG_POST_PWR_HS] = fsd_post_pwr_hs_cfg, }; +static const char * const fsd_ufs_phy_clks[] = { + "ref_clk", +}; + const struct samsung_ufs_phy_drvdata fsd_ufs_phy = { .cfgs = fsd_ufs_phy_cfgs, .isol = { @@ -53,6 +57,7 @@ const struct samsung_ufs_phy_drvdata fsd_ufs_phy = { .mask = FSD_EMBEDDED_COMBO_PHY_CTRL_MASK, .en = FSD_EMBEDDED_COMBO_PHY_CTRL_EN, }, - .has_symbol_clk = 0, + .clk_list = fsd_ufs_phy_clks, + .num_clks = ARRAY_SIZE(fsd_ufs_phy_clks), .cdr_lock_status_offset = FSD_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS, }; diff --git a/drivers/phy/samsung/phy-samsung-ufs.c b/drivers/phy/samsung/phy-samsung-ufs.c index e4334529ffbc..14cce2f2487e 100644 --- a/drivers/phy/samsung/phy-samsung-ufs.c +++ b/drivers/phy/samsung/phy-samsung-ufs.c @@ -131,73 +131,21 @@ static int samsung_ufs_phy_calibrate(struct phy *phy) return err; } -static int samsung_ufs_phy_symbol_clk_init(struct samsung_ufs_phy *phy) -{ - int ret; - - phy->tx0_symbol_clk = devm_clk_get(phy->dev, "tx0_symbol_clk"); - if (IS_ERR(phy->tx0_symbol_clk)) { - dev_err(phy->dev, "failed to get tx0_symbol_clk clock\n"); - return PTR_ERR(phy->tx0_symbol_clk); - } - - phy->rx0_symbol_clk = devm_clk_get(phy->dev, "rx0_symbol_clk"); - if (IS_ERR(phy->rx0_symbol_clk)) { - dev_err(phy->dev, "failed to get rx0_symbol_clk clock\n"); - return PTR_ERR(phy->rx0_symbol_clk); - } - - phy->rx1_symbol_clk = devm_clk_get(phy->dev, "rx1_symbol_clk"); - if (IS_ERR(phy->rx1_symbol_clk)) { - dev_err(phy->dev, "failed to get rx1_symbol_clk clock\n"); - return PTR_ERR(phy->rx1_symbol_clk); - } - - ret = clk_prepare_enable(phy->tx0_symbol_clk); - if (ret) { - dev_err(phy->dev, "%s: tx0_symbol_clk enable failed %d\n", __func__, ret); - goto out; - } - - ret = clk_prepare_enable(phy->rx0_symbol_clk); - if (ret) { - dev_err(phy->dev, "%s: rx0_symbol_clk enable failed %d\n", __func__, ret); - goto out_disable_tx0_clk; - } - - ret = clk_prepare_enable(phy->rx1_symbol_clk); - if (ret) { - dev_err(phy->dev, "%s: rx1_symbol_clk enable failed %d\n", __func__, ret); - goto out_disable_rx0_clk; - } - - return 0; - -out_disable_rx0_clk: - clk_disable_unprepare(phy->rx0_symbol_clk); -out_disable_tx0_clk: - clk_disable_unprepare(phy->tx0_symbol_clk); -out: - return ret; -} - static int samsung_ufs_phy_clks_init(struct samsung_ufs_phy *phy) { - int ret; - - phy->ref_clk = devm_clk_get(phy->dev, "ref_clk"); - if (IS_ERR(phy->ref_clk)) - dev_err(phy->dev, "failed to get ref_clk clock\n"); + int i; + const struct samsung_ufs_phy_drvdata *drvdata = phy->drvdata; + int num_clks = drvdata->num_clks; - ret = clk_prepare_enable(phy->ref_clk); - if (ret) { - dev_err(phy->dev, "%s: ref_clk enable failed %d\n", __func__, ret); - return ret; - } + phy->clks = devm_kcalloc(phy->dev, num_clks, sizeof(*phy->clks), + GFP_KERNEL); + if (!phy->clks) + return -ENOMEM; - dev_dbg(phy->dev, "UFS MPHY ref_clk_rate = %ld\n", clk_get_rate(phy->ref_clk)); + for (i = 0; i < num_clks; i++) + phy->clks[i].id = drvdata->clk_list[i]; - return 0; + return devm_clk_bulk_get(phy->dev, num_clks, phy->clks); } static int samsung_ufs_phy_init(struct phy *phy) @@ -208,16 +156,12 @@ static int samsung_ufs_phy_init(struct phy *phy) ss_phy->lane_cnt = phy->attrs.bus_width; ss_phy->ufs_phy_state = CFG_PRE_INIT; - if (ss_phy->has_symbol_clk) { - ret = samsung_ufs_phy_symbol_clk_init(ss_phy); - if (ret) - dev_err(ss_phy->dev, "failed to set ufs phy symbol clocks\n"); + ret = clk_bulk_prepare_enable(ss_phy->drvdata->num_clks, ss_phy->clks); + if (ret) { + dev_err(ss_phy->dev, "failed to enable ufs phy clocks\n"); + return ret; } - ret = samsung_ufs_phy_clks_init(ss_phy); - if (ret) - dev_err(ss_phy->dev, "failed to set ufs phy clocks\n"); - ret = samsung_ufs_phy_calibrate(phy); if (ret) dev_err(ss_phy->dev, "ufs phy calibration failed\n"); @@ -258,13 +202,7 @@ static int samsung_ufs_phy_exit(struct phy *phy) { struct samsung_ufs_phy *ss_phy = get_samsung_ufs_phy(phy); - clk_disable_unprepare(ss_phy->ref_clk); - - if (ss_phy->has_symbol_clk) { - clk_disable_unprepare(ss_phy->tx0_symbol_clk); - clk_disable_unprepare(ss_phy->rx0_symbol_clk); - clk_disable_unprepare(ss_phy->rx1_symbol_clk); - } + clk_bulk_disable_unprepare(ss_phy->drvdata->num_clks, ss_phy->clks); return 0; } @@ -330,7 +268,6 @@ static int samsung_ufs_phy_probe(struct platform_device *pdev) phy->dev = dev; phy->drvdata = drvdata; phy->cfgs = drvdata->cfgs; - phy->has_symbol_clk = drvdata->has_symbol_clk; memcpy(&phy->isol, &drvdata->isol, sizeof(phy->isol)); if (!of_property_read_u32_index(dev->of_node, "samsung,pmu-syscon", 1, @@ -339,6 +276,12 @@ static int samsung_ufs_phy_probe(struct platform_device *pdev) phy->lane_cnt = PHY_DEF_LANE_CNT; + err = samsung_ufs_phy_clks_init(phy); + if (err) { + dev_err(dev, "failed to get phy clocks\n"); + goto out; + } + phy_set_drvdata(gen_phy, phy); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); diff --git a/drivers/phy/samsung/phy-samsung-ufs.h b/drivers/phy/samsung/phy-samsung-ufs.h index 6320ac852f29..e122960cfee8 100644 --- a/drivers/phy/samsung/phy-samsung-ufs.h +++ b/drivers/phy/samsung/phy-samsung-ufs.h @@ -109,7 +109,8 @@ struct samsung_ufs_phy_pmu_isol { struct samsung_ufs_phy_drvdata { const struct samsung_ufs_phy_cfg **cfgs; struct samsung_ufs_phy_pmu_isol isol; - bool has_symbol_clk; + const char * const *clk_list; + int num_clks; u32 cdr_lock_status_offset; }; @@ -117,15 +118,10 @@ struct samsung_ufs_phy { struct device *dev; void __iomem *reg_pma; struct regmap *reg_pmu; - struct clk *ref_clk; - struct clk *ref_clk_parent; - struct clk *tx0_symbol_clk; - struct clk *rx0_symbol_clk; - struct clk *rx1_symbol_clk; + struct clk_bulk_data *clks; const struct samsung_ufs_phy_drvdata *drvdata; const struct samsung_ufs_phy_cfg * const *cfgs; struct samsung_ufs_phy_pmu_isol isol; - bool has_symbol_clk; u8 lane_cnt; int ufs_phy_state; enum phy_mode mode;