From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 197BDC77B6F for ; Wed, 29 Mar 2023 16:00:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231193AbjC2P7e (ORCPT ); Wed, 29 Mar 2023 11:59:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47466 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230514AbjC2P6p (ORCPT ); Wed, 29 Mar 2023 11:58:45 -0400 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABAD059F9; Wed, 29 Mar 2023 08:58:23 -0700 (PDT) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1phYBI-0003LQ-0V; Wed, 29 Mar 2023 17:57:48 +0200 Date: Wed, 29 Mar 2023 16:57:44 +0100 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Sean Wang , Landen Chao , DENG Qingfang , Philipp Zabel Cc: Sam Shih , Lorenzo Bianconi , John Crispin , Felix Fietkau Subject: [RFC PATCH net-next v3 03/15] net: dsa: mt7530: use regmap to access switch register space Message-ID: <754322262cd754aee5916954b8e651989b229a09.1680105013.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use regmap API to access the switch register space. Signed-off-by: Daniel Golle --- drivers/net/dsa/mt7530.c | 88 +++++++++++++++++++++++++--------------- drivers/net/dsa/mt7530.h | 2 + 2 files changed, 58 insertions(+), 32 deletions(-) diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index deb0b338b22c2..fffeac8d34855 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -183,9 +183,9 @@ core_clear(struct mt7530_priv *priv, u32 reg, u32 val) } static int -mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val) +mt7530_regmap_write(void *context, unsigned int reg, unsigned int val) { - struct mii_bus *bus = priv->bus; + struct mii_bus *bus = context; u16 page, r, lo, hi; int ret; @@ -197,24 +197,33 @@ mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val) /* MT7530 uses 31 as the pseudo port */ ret = bus->write(bus, 0x1f, 0x1f, page); if (ret < 0) - goto err; + return ret; ret = bus->write(bus, 0x1f, r, lo); if (ret < 0) - goto err; + return ret; ret = bus->write(bus, 0x1f, 0x10, hi); -err: + return ret; +} + +static int +mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val) +{ + int ret; + + ret = regmap_write(priv->regmap, reg, val); + if (ret < 0) - dev_err(&bus->dev, + dev_err(priv->dev, "failed to write mt7530 register\n"); return ret; } -static u32 -mt7530_mii_read(struct mt7530_priv *priv, u32 reg) +static int +mt7530_regmap_read(void *context, unsigned int reg, unsigned int *val) { - struct mii_bus *bus = priv->bus; + struct mii_bus *bus = context; u16 page, r, lo, hi; int ret; @@ -223,16 +232,31 @@ mt7530_mii_read(struct mt7530_priv *priv, u32 reg) /* MT7530 uses 31 as the pseudo port */ ret = bus->write(bus, 0x1f, 0x1f, page); - if (ret < 0) { - dev_err(&bus->dev, - "failed to read mt7530 register\n"); + if (ret < 0) return ret; - } lo = bus->read(bus, 0x1f, r); hi = bus->read(bus, 0x1f, 0x10); - return (hi << 16) | (lo & 0xffff); + *val = (hi << 16) | (lo & 0xffff); + + return 0; +} + +static u32 +mt7530_mii_read(struct mt7530_priv *priv, u32 reg) +{ + int ret; + u32 val; + + ret = regmap_read(priv->regmap, reg, &val); + if (ret) { + dev_err(priv->dev, + "failed to read mt7530 register\n"); + return ret; + } + + return val; } static void @@ -2895,22 +2919,6 @@ static const struct phylink_pcs_ops mt7530_pcs_ops = { .pcs_an_restart = mt7530_pcs_an_restart, }; -static int mt7530_regmap_read(void *context, unsigned int reg, unsigned int *val) -{ - struct mt7530_priv *priv = context; - - *val = mt7530_mii_read(priv, reg); - return 0; -}; - -static int mt7530_regmap_write(void *context, unsigned int reg, unsigned int val) -{ - struct mt7530_priv *priv = context; - - mt7530_mii_write(priv, reg, val); - return 0; -}; - static void mt7530_mdio_regmap_lock(void *mdio_lock) { @@ -2923,7 +2931,7 @@ mt7530_mdio_regmap_unlock(void *mdio_lock) mutex_unlock(mdio_lock); } -static const struct regmap_bus mt7531_regmap_bus = { +static const struct regmap_bus mt7530_regmap_bus = { .reg_write = mt7530_regmap_write, .reg_read = mt7530_regmap_read, }; @@ -2956,7 +2964,7 @@ mt7531_create_sgmii(struct mt7530_priv *priv) mt7531_pcs_config[i]->lock_arg = &priv->bus->mdio_lock; regmap = devm_regmap_init(priv->dev, - &mt7531_regmap_bus, priv, + &mt7530_regmap_bus, priv->bus, mt7531_pcs_config[i]); if (IS_ERR(regmap)) { ret = PTR_ERR(regmap); @@ -3127,6 +3135,7 @@ MODULE_DEVICE_TABLE(of, mt7530_of_match); static int mt7530_probe(struct mdio_device *mdiodev) { + static struct regmap_config *regmap_config; struct mt7530_priv *priv; struct device_node *dn; @@ -3206,6 +3215,21 @@ mt7530_probe(struct mdio_device *mdiodev) mutex_init(&priv->reg_mutex); dev_set_drvdata(&mdiodev->dev, priv); + regmap_config = devm_kzalloc(&mdiodev->dev, sizeof(*regmap_config), + GFP_KERNEL); + if (!regmap_config) + return -ENOMEM; + + regmap_config->reg_bits = 16; + regmap_config->val_bits = 32; + regmap_config->reg_stride = 4; + regmap_config->max_register = MT7530_CREV; + regmap_config->disable_locking = true; + priv->regmap = devm_regmap_init(priv->dev, &mt7530_regmap_bus, + priv->bus, regmap_config); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + return dsa_register_switch(priv->ds); } diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h index c5d29f3fc1d80..39aaca50961bd 100644 --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -754,6 +754,7 @@ struct mt753x_info { * @dev: The device pointer * @ds: The pointer to the dsa core structure * @bus: The bus used for the device and built-in PHY + * @regmap: The regmap instance representing all switch registers * @rstc: The pointer to reset control used by MCM * @core_pwr: The power supplied into the core * @io_pwr: The power supplied into the I/O @@ -774,6 +775,7 @@ struct mt7530_priv { struct device *dev; struct dsa_switch *ds; struct mii_bus *bus; + struct regmap *regmap; struct reset_control *rstc; struct regulator *core_pwr; struct regulator *io_pwr; -- 2.39.2