From patchwork Fri Feb 23 09:05:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 1903174 X-Patchwork-Delegate: ykai007@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Th4Bm13Q9z23l1 for ; Fri, 23 Feb 2024 20:16:32 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 03BDE87C58; Fri, 23 Feb 2024 10:06:28 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=0leil.net Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id CBD18878EE; Fri, 23 Feb 2024 10:06:17 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.2 Received: from smtp-1909.mail.infomaniak.ch (smtp-1909.mail.infomaniak.ch [185.125.25.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 3B35E87653 for ; Fri, 23 Feb 2024 10:06:06 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=0leil.net Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=foss+uboot@0leil.net Received: from smtp-3-0000.mail.infomaniak.ch (smtp-3-0000.mail.infomaniak.ch [10.4.36.107]) by smtp-4-3000.mail.infomaniak.ch (Postfix) with ESMTPS id 4Th3yj5xDDzDB3; Fri, 23 Feb 2024 10:06:05 +0100 (CET) Received: from unknown by smtp-3-0000.mail.infomaniak.ch (Postfix) with ESMTPA id 4Th3yj29KKz3k; Fri, 23 Feb 2024 10:06:05 +0100 (CET) From: Quentin Schulz Date: Fri, 23 Feb 2024 10:05:54 +0100 Subject: [PATCH v2 07/16] rockchip: adc: rockchip-saradc: use union for preparing for v2 MIME-Version: 1.0 Message-Id: <20240223-rk3588-saradc-v2-7-11c046b7e94a@theobroma-systems.com> References: <20240223-rk3588-saradc-v2-0-11c046b7e94a@theobroma-systems.com> In-Reply-To: <20240223-rk3588-saradc-v2-0-11c046b7e94a@theobroma-systems.com> To: Jagan Teki , Tom Rini , Jaehoon Chung , Simon Glass , Philipp Tomsich , Kever Yang , Klaus Goger , Heiko Stuebner Cc: u-boot@lists.denx.de, Quentin Schulz X-Mailer: b4 0.13.0 X-Infomaniak-Routing: alpha X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean From: Quentin Schulz The registers are entirely different between SARADC v1 and SARADC v2, so let's prepare to add another struct for accessing v2 registers by adding a union. Cc: Quentin Schulz Signed-off-by: Quentin Schulz --- drivers/adc/rockchip-saradc.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/adc/rockchip-saradc.c b/drivers/adc/rockchip-saradc.c index 03caca78b5f..4a842556a60 100644 --- a/drivers/adc/rockchip-saradc.c +++ b/drivers/adc/rockchip-saradc.c @@ -23,13 +23,16 @@ #define SARADC_TIMEOUT (100 * 1000) -struct rockchip_saradc_regs { +struct rockchip_saradc_regs_v1 { unsigned int data; unsigned int stas; unsigned int ctrl; unsigned int dly_pu_soc; }; +union rockchip_saradc_regs { + struct rockchip_saradc_regs_v1 *v1; +}; struct rockchip_saradc_data { int num_bits; int num_channels; @@ -37,7 +40,7 @@ struct rockchip_saradc_data { }; struct rockchip_saradc_priv { - struct rockchip_saradc_regs *regs; + union rockchip_saradc_regs regs; int active_channel; const struct rockchip_saradc_data *data; }; @@ -53,16 +56,16 @@ int rockchip_saradc_channel_data(struct udevice *dev, int channel, return -EINVAL; } - if ((readl(&priv->regs->ctrl) & SARADC_CTRL_IRQ_STATUS) != + if ((readl(&priv->regs.v1->ctrl) & SARADC_CTRL_IRQ_STATUS) != SARADC_CTRL_IRQ_STATUS) return -EBUSY; /* Read value */ - *data = readl(&priv->regs->data); + *data = readl(&priv->regs.v1->data); *data &= uc_pdata->data_mask; /* Power down adc */ - writel(0, &priv->regs->ctrl); + writel(0, &priv->regs.v1->ctrl); return 0; } @@ -77,11 +80,11 @@ int rockchip_saradc_start_channel(struct udevice *dev, int channel) } /* 8 clock periods as delay between power up and start cmd */ - writel(8, &priv->regs->dly_pu_soc); + writel(8, &priv->regs.v1->dly_pu_soc); /* Select the channel to be used and trigger conversion */ writel(SARADC_CTRL_POWER_CTRL | (channel & SARADC_CTRL_CHN_MASK) | - SARADC_CTRL_IRQ_ENABLE, &priv->regs->ctrl); + SARADC_CTRL_IRQ_ENABLE, &priv->regs.v1->ctrl); priv->active_channel = channel; @@ -93,7 +96,7 @@ int rockchip_saradc_stop(struct udevice *dev) struct rockchip_saradc_priv *priv = dev_get_priv(dev); /* Power down adc */ - writel(0, &priv->regs->ctrl); + writel(0, &priv->regs.v1->ctrl); priv->active_channel = -1; @@ -146,8 +149,8 @@ int rockchip_saradc_of_to_plat(struct udevice *dev) struct rockchip_saradc_data *data; data = (struct rockchip_saradc_data *)dev_get_driver_data(dev); - priv->regs = dev_read_addr_ptr(dev); - if (!priv->regs) { + priv->regs.v1 = dev_read_addr_ptr(dev); + if (!priv->regs.v1) { pr_err("Dev: %s - can't get address!", dev->name); return -EINVAL; }