From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 660F84446E4; Tue, 21 Jul 2026 09:36:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626595; cv=none; b=XzckiQ5NKkbtOMBM4vZIPj/iCDNr1/dPnPpqBVDu55oAHSEZOr02ErA2M09Y2Ll71tUwAX0BZS4NEGfJ06z4ZRFSwIX6IFa4SPgxV+OVa2JpIKR1wRjoxyYSeyH1AYCAgmz2lga2Tvohia7EaSubP8LgM0ANu0et6yiayMs0bow= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626595; c=relaxed/simple; bh=UjfNXgF3s7L3FTzKJThRG5oNM8jZglNFcKi7mxpewEs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Pvs7JYpg8P1eEpk89vxkybKcxHp4k4APBUbKWZxTGbP43rRSftFlKQLb3RS1UxQdLirISICN4nSOwFUDo8sA+Dg2q0tsHJTuAjSg1gVPiMP5H3P1XvII8OboValmjhyzZ87hclXlVpnREDTVJ60UaUAELBedV4Tttz3QpWxJsYg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=JwwI4juo; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="JwwI4juo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626592; bh=UjfNXgF3s7L3FTzKJThRG5oNM8jZglNFcKi7mxpewEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JwwI4juou5roxp/z2ALzzKtSkD9s5yP505LwJBEY4To2VYfc+BqIh5TJ8HGY85MEw sSY6H6GTNiL4adCOL9V6XD6yXON/DrcVBLkYovYQMaRH0+aV70mXmYE6cDm40ZcEBm 9+MTXGQ/XGgmVZ7UVI2NgF/cIICgml4BTI7AmZP/XBTNmdPWWxaSsD7Y91q7mcrKh+ dmr5TIzW4Wte/S2zFahF/f7407pYNHGxAsTxBEiZB57tvFd2zjaC0zrsaTdI8qceBX MrSIuH3fFOZFTWYqoVst0Cju4wRDTxN3LgrzIPkYj2SWtnywrKty8oiVUUM/NF0Vnf tQL6OCh8FQl+w== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 7F41817E071A; Tue, 21 Jul 2026 11:36:31 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, stable@vger.kernel.org, Sashiko Bot Subject: [PATCH v13 01/12] spmi: Fix potential use-after-free by grabbing of_node reference Date: Tue, 21 Jul 2026 11:36:15 +0200 Message-ID: <20260721093626.96264-2-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" As noticed by Sashiko during a review run of an unrelated patch, in of_spmi_register_devices(), for_each_available_child_of_node() is used to loop through children, and to also assign a node to a newly created SPMI child device. Problem is that the refcount is dropped at every iteration so, in the specific case of DT overlays, a use-after-free may occur when an overlay is dynamically unloaded! To resolve this, increase the of_node refcount when assigning (in function of_spmi_register_devices) and release the reference in spmi_device_remove(). Fixes: bc32bbd04011 ("spmi: Set fwnode for spmi devices") Cc: stable@vger.kernel.org Reported-by: Sashiko Bot Closes: https://sashiko.dev/#/patchset/20260608100949.36309-1-angelogioacch= ino.delregno@collabora.com?part=3D2 Signed-off-by: AngeloGioacchino Del Regno --- drivers/spmi/spmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index 57b7c0cb4240..f6d2f4bddfcd 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -24,6 +24,7 @@ static void spmi_dev_release(struct device *dev) { struct spmi_device *sdev =3D to_spmi_device(dev); =20 + of_node_put(dev->of_node); kfree(sdev); } =20 @@ -517,7 +518,7 @@ static void of_spmi_register_devices(struct spmi_contro= ller *ctrl) if (!sdev) continue; =20 - device_set_node(&sdev->dev, of_fwnode_handle(node)); + device_set_node(&sdev->dev, of_fwnode_handle(of_node_get(node))); sdev->usid =3D (u8)reg[0]; =20 err =3D spmi_device_add(sdev); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A1F29446820; Tue, 21 Jul 2026 09:36:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626597; cv=none; b=NziVO73JA/e6FH5+ZtBpYBWtRSWJ9rarZvqPiQPA6Uxw1ztEBkVmsdT0ToBJ8W/zllPX90yakvBERWX/caxYV+mJBYTbtK4PnmAbGmNVoDe2vVVUcU6fsC6bkHFnxm34+D4JXoQWrOD5bZz/K/A7mp1km3wluRd+za7wB0BiYU8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626597; c=relaxed/simple; bh=905MNourViHGaJJBpixKwz5Mbeb1p5GGyszaYtGn488=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M64Q32jvffQI/MYN0TEwabJJZjdHdBSnf3XX+ZuOjIeDjNsTRTcOyMpLnRKCYLeS3iCtP8XtgOBkFuwavnef245F3gcBNpBbd08sMwr/hzWE6bzHONDJOTUeJsyZtTrQhYmdXESfivf+NqVwkW6+tYgvqbw44jjTicxfsc0/RuU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=XPrYhABN; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="XPrYhABN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626593; bh=905MNourViHGaJJBpixKwz5Mbeb1p5GGyszaYtGn488=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XPrYhABN8EiYO3hWcaAwedNAtcdQ+UepRgsJGqGrtnPtXUdhCr+K0FvygPnVDIONg 4RBBwZyjsGD8NdN/ELSb1vdDfOCnkv5NQJKBVkzo+y8f7ERbE55EzvPMvJYpjop2Bc PtNFK7zakQKD8njIV6jwVvXz0IQvbTl/TTTfLG/5phBV55LgjPMp1Cj8fE/ozlKy1M JgvVryMknO9HkH32EOaM/KGT/oQCC/6vJJwF4o5UGENERbiRByfgr/cgi72ZUo9O3k 2/Yc/Rb85mX5RZx4jyl0fNDGgdBKWsZVsLZlN38ZTpKGiuQy8TFU4GQWN/72uOCZnM QutUha266EqwQ== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id BB9F217E0B71; Tue, 21 Jul 2026 11:36:32 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Andy Shevchenko Subject: [PATCH v13 02/12] spmi: Remove redundant dev_name() print in spmi_device_add() Date: Tue, 21 Jul 2026 11:36:16 +0200 Message-ID: <20260721093626.96264-3-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Function spmi_device_add() uses dev_{dbg,err}() for respectively debug and error prints, and passes the same device pointer as both the dev_{dbg,err}() parameters and to a dev_name() that is part of the actual message. This means that the device name gets printed twice! Remove the redundant dev_name() from the messages. Acked-by: Stephen Boyd Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/spmi/spmi.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index f6d2f4bddfcd..7cd81394c925 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -69,12 +69,11 @@ int spmi_device_add(struct spmi_device *sdev) =20 err =3D device_add(&sdev->dev); if (err < 0) { - dev_err(&sdev->dev, "Can't add %s, status %d\n", - dev_name(&sdev->dev), err); + dev_err(&sdev->dev, "Can't add device, status %d\n", err); goto err_device_add; } =20 - dev_dbg(&sdev->dev, "device %s registered\n", dev_name(&sdev->dev)); + dev_dbg(&sdev->dev, "device registered\n"); =20 err_device_add: return err; --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0D25446067; Tue, 21 Jul 2026 09:36:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626598; cv=none; b=pa7nRwI/I0PF8NlNPLXf7FmTclES8MdDEA7vCBpBiP+pOGTkjxbK17sBchaZOqf2SUHlgerbibBmnwKT5xF4VTvzWWKoWmFSsKCpmZpZVpE1WN6hur5nqAcyglfMy9iqkBpklyQWadqAggCcoeSjkaUyrSh8GNSnAPWH4Ag2f+o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626598; c=relaxed/simple; bh=RURxCIbiO9OLzJXZt4K2oNgOwNPpFBiKCrMOjqtktAw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E1uymkTBwifId3zF6yyULi8raBg/BOn7rY5IR46Fv2NFMWN5yYIbOP0wnYCGJ/3uiMZnM40Vc3rXSRoyT7DoQwKkWLoEVMxr7GSQE8exrq2Qq5dNwK4q67lcYOOgRi+NOj0g5QPDnVQ5HxDha3jeDszqMmxjD0/6wRxsqKG5KpM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=K0GC19BD; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="K0GC19BD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626595; bh=RURxCIbiO9OLzJXZt4K2oNgOwNPpFBiKCrMOjqtktAw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K0GC19BDJo5oWvYNrBU9kq11veCvItmWezy1z1NpDFfeLt+fUugRX+26/zGLO/K/y XoJrebVu0M6+QaHeXu2at3Z7L1fp+OHe9S+gPj/rQPNc9woFRM5JB8XZV1W9ZxhKRi 2ta3lJ8fE7RM1fyaiPOhzSxWQZT/FCOGgNOFrtJQsK3ggQKOYPgWtM2ARhFuZVj5OM 5wbdlo4YVbTfFztJTtjW0NkT4T3qoZE/EIlCWDhcUtDJGVdo2N3pRoGvoi/i3+682R MnRgILF4h4IFEzI9a3aUOYZsdCJGmCJ7RSEVBYGvaWQW7oWIwA1Vd9w1CQmTkh/PJK Dsze2EfN1HRLg== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id EE5AB17E1066; Tue, 21 Jul 2026 11:36:33 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Andy Shevchenko Subject: [PATCH v13 03/12] spmi: Print error status with %pe format Date: Tue, 21 Jul 2026 11:36:17 +0200 Message-ID: <20260721093626.96264-4-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Instead of printing just a number, use the %pe format for error status, increasing readability of error prints. Acked-by: Stephen Boyd Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/spmi/spmi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index 7cd81394c925..ec4389dfae28 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -69,7 +69,7 @@ int spmi_device_add(struct spmi_device *sdev) =20 err =3D device_add(&sdev->dev); if (err < 0) { - dev_err(&sdev->dev, "Can't add device, status %d\n", err); + dev_err(&sdev->dev, "Can't add device, status %pe\n", ERR_PTR(err)); goto err_device_add; } =20 @@ -494,8 +494,8 @@ static void of_spmi_register_devices(struct spmi_contro= ller *ctrl) err =3D of_property_read_u32_array(node, "reg", reg, 2); if (err) { dev_err(&ctrl->dev, - "node %pOF err (%d) does not have 'reg' property\n", - node, err); + "node %pOF err (%pe) does not have 'reg' property\n", + node, ERR_PTR(err)); continue; } =20 @@ -523,7 +523,7 @@ static void of_spmi_register_devices(struct spmi_contro= ller *ctrl) err =3D spmi_device_add(sdev); if (err) { dev_err(&sdev->dev, - "failure adding device. status %d\n", err); + "failure adding device. status %pe\n", ERR_PTR(err)); spmi_device_put(sdev); } } --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CD296446C09; Tue, 21 Jul 2026 09:36:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626599; cv=none; b=sYpwUuMHMHxhGMyctm49g6X1jyJjnCWQfBBTLiJHp6HvnZzWh9yQAdiDWQaahbnTxKvHJe9qIRUEHexJzGqPAAwwcnGXoQbQ1eR5eaQrsedFN1eodRL96aNJAw6Cjb98SWYreWZeyrPqqrUDPEhuy0RiSCTFjxhLjcQ44DsGXTw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626599; c=relaxed/simple; bh=2JegC7bwl2yAooLEPFpMPt9OMTNbjCZotatCuYA4LeE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KWInbLoOZy317G2ozWKPUY4lqccwAq4eqOYpPtqQB0Ook2UD3qG/RPF3YwCYgYwuie562tdLA+GysDYc6NRfHrHz0dhoh9H8qJev+2erNPV/kT0HJnMTTGkHwmzhwQy/l0Lgdjm4qEfyoUQdq01AHopnBEV6v35ZjpfF5QhlKhU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=qddJp80f; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="qddJp80f" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626596; bh=2JegC7bwl2yAooLEPFpMPt9OMTNbjCZotatCuYA4LeE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qddJp80f+nyQV6STPPvFzXOdkpB4njVmhDF2q/gx6deBLg8X9AiyQbn311xuW9m2m luVno7aMueyUR3PtLgwl0zbjDNItWE1uxT6yJpAp3y0B0QomyW5p3MCHpLrJY1doLa Wtj/972fC1kTaOV4etfvud6AsuwkvIrZjxSy0grJpGUpHLcWojk5xYkkwo1X63L6Wy raNlpoIezBZCixh416wSi0/hAY5eSZgWyRpMusVtyfblxBoKeHfSK3O1JbhKeFvX// y7C0d4jOk+kVS7Jno3D1Cs8Nyk6JR1pOVfnNJ17cM/mA8YDbVPJ9OuePKVe2MFuBL+ cjuVcLYbw3gAw== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 2C8FF17E10F4; Tue, 21 Jul 2026 11:36:35 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Andy Shevchenko Subject: [PATCH v13 04/12] spmi: Remove unneeded goto in spmi_device_add() error path Date: Tue, 21 Jul 2026 11:36:18 +0200 Message-ID: <20260721093626.96264-5-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" If any error happens during device_add() just return inside of the conditional, as the goto path doesn't do anything else if not just returning. While at it, to improve readability, also change this function to explicitly return 0 (for success) at the end. Acked-by: Stephen Boyd Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/spmi/spmi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index ec4389dfae28..ba4a980a35eb 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -70,13 +70,11 @@ int spmi_device_add(struct spmi_device *sdev) err =3D device_add(&sdev->dev); if (err < 0) { dev_err(&sdev->dev, "Can't add device, status %pe\n", ERR_PTR(err)); - goto err_device_add; + return err; } =20 dev_dbg(&sdev->dev, "device registered\n"); - -err_device_add: - return err; + return 0; } EXPORT_SYMBOL_GPL(spmi_device_add); =20 --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 36AA144998D; Tue, 21 Jul 2026 09:36:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626601; cv=none; b=cuiv4OLz8g5k59VW1PU6ssmiKlhqapSdMjk2pgwKtASDNizpT+08n6zQoRuFRM2U+va7A7w6f30MUArKAp3R4vgWLylPhCLkgbDXX/P7BxP50pQevERrJbcuRZYcksYpOgD20UcxPbooPamMuS5EonMbNt8J6lvTbhILCBN0Z5M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626601; c=relaxed/simple; bh=raHCBS44hTpI/MnCPxY84RtPmP9wqKfvBCM3TKawgYo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bHeu7cF7L8xL85039qWSU2Ph4aI12JrzV1whXL6B8DN8M+K6QaRPyMmkuG3HrfEhUont5Yxl6LDUwvLas6lrQ9ZrlepZcf3VU2e40hIRwddoqSNhR+Q51L95bqNRsqUz3lzqx7ipmvAiTN2lCE2RaJ09lXkc2o9t6NGGi2CTFuA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=gxZ/9MJT; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="gxZ/9MJT" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626597; bh=raHCBS44hTpI/MnCPxY84RtPmP9wqKfvBCM3TKawgYo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gxZ/9MJThEOzzrmK+k8GKSsmZv3aZLh9xDgEHjXMH/EBlAjeK3BiXgW+kjhxyk69B lBZ5hhWDZg0Ug6nPYt5jQ+gDysTtdcQqv4kZsgFq4e4OYx3ZZ2BQbZsmY1qfgdxWe+ NLFv9+l9DBzpHByandLkJ6FF/15gUw1rN4c4LChQOSCVzfXMMII3lW2s/OyTGQ/A/B 3jUje+ew2/n1M678ljha0z6gESSYG1+u29AWplXwOn56b6AH5bOZToZfnp0Foqlowf PufDdLsro8PlbE25k2u5q04wt+2/wgdn8sF2exnyJUWhfODlIAsJ6QdTDyGBwAA79Z 3lj1PRUNOxj7g== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 5E0F717E071A; Tue, 21 Jul 2026 11:36:36 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Jonathan Cameron , Andy Shevchenko Subject: [PATCH v13 05/12] spmi: Implement spmi_subdevice_alloc_and_add() and devm variant Date: Tue, 21 Jul 2026 11:36:19 +0200 Message-ID: <20260721093626.96264-6-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some devices connected over the SPMI bus may be big, in the sense that those may be a complex of devices managed by a single chip over the SPMI bus, reachable through a single SID. Add new functions aimed at managing sub-devices of a SPMI device spmi_subdevice_alloc_and_add() and a spmi_subdevice_remove() for adding a new subdevice and removing it respectively, and also add their devm_* variants. The need for such functions comes from the existence of those complex Power Management ICs (PMICs), which feature one or many sub-devices, in some cases with these being even addressable on the chip in form of SPMI register ranges. Examples of those devices can be found in both Qualcomm platforms with their PMICs having PON, RTC, SDAM, GPIO controller, and other sub-devices, and in newer MediaTek platforms showing similar HW features and a similar layout with those also having many subdevs. Also, instead of generally exporting symbols, export them with a new "SPMI" namespace: all users will have to import this namespace to make use of the newly introduced exports. Reviewed-by: Jonathan Cameron Tested-by: Neil Armstrong # on SM8650-QRD Acked-by: Stephen Boyd Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/spmi/spmi-devres.c | 24 ++++++++++++ drivers/spmi/spmi.c | 78 ++++++++++++++++++++++++++++++++++++++ include/linux/spmi.h | 16 ++++++++ 3 files changed, 118 insertions(+) diff --git a/drivers/spmi/spmi-devres.c b/drivers/spmi/spmi-devres.c index 62c4b3f24d06..c3e889fe1b6e 100644 --- a/drivers/spmi/spmi-devres.c +++ b/drivers/spmi/spmi-devres.c @@ -60,5 +60,29 @@ int devm_spmi_controller_add(struct device *parent, stru= ct spmi_controller *ctrl } EXPORT_SYMBOL_GPL(devm_spmi_controller_add); =20 +static void devm_spmi_subdevice_remove(void *sub_sdev) +{ + spmi_subdevice_remove(sub_sdev); +} + +struct spmi_subdevice *devm_spmi_subdevice_alloc_and_add(struct device *de= v, + struct spmi_device *sparent) +{ + struct spmi_subdevice *sub_sdev; + int ret; + + sub_sdev =3D spmi_subdevice_alloc_and_add(sparent); + if (IS_ERR(sub_sdev)) + return sub_sdev; + + ret =3D devm_add_action_or_reset(dev, devm_spmi_subdevice_remove, sub_sde= v); + if (ret) + return ERR_PTR(ret); + + return sub_sdev; +} +EXPORT_SYMBOL_NS_GPL(devm_spmi_subdevice_alloc_and_add, "SPMI"); + MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("SPMI devres helpers"); +MODULE_IMPORT_NS("SPMI"); diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index ba4a980a35eb..bafb4c3e6c17 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -19,6 +19,7 @@ =20 static bool is_registered; static DEFINE_IDA(ctrl_ida); +static DEFINE_IDA(spmi_subdevice_ida); =20 static void spmi_dev_release(struct device *dev) { @@ -32,6 +33,19 @@ static const struct device_type spmi_dev_type =3D { .release =3D spmi_dev_release, }; =20 +static void spmi_subdev_release(struct device *dev) +{ + struct spmi_device *sdev =3D to_spmi_device(dev); + struct spmi_subdevice *sub_sdev =3D container_of(sdev, struct spmi_subdev= ice, sdev); + + ida_free(&spmi_subdevice_ida, sub_sdev->devid); + kfree(sub_sdev); +} + +static const struct device_type spmi_subdev_type =3D { + .release =3D spmi_subdev_release, +}; + static void spmi_ctrl_release(struct device *dev) { struct spmi_controller *ctrl =3D to_spmi_controller(dev); @@ -88,6 +102,18 @@ void spmi_device_remove(struct spmi_device *sdev) } EXPORT_SYMBOL_GPL(spmi_device_remove); =20 +/** + * spmi_subdevice_remove() - Remove an SPMI subdevice + * @sub_sdev: spmi_device to be removed + */ +void spmi_subdevice_remove(struct spmi_subdevice *sub_sdev) +{ + struct spmi_device *sdev =3D &sub_sdev->sdev; + + device_unregister(&sdev->dev); +} +EXPORT_SYMBOL_NS_GPL(spmi_subdevice_remove, "SPMI"); + static inline int spmi_cmd(struct spmi_controller *ctrl, u8 opcode, u8 sid) { @@ -429,6 +455,58 @@ struct spmi_device *spmi_device_alloc(struct spmi_cont= roller *ctrl) } EXPORT_SYMBOL_GPL(spmi_device_alloc); =20 +/** + * spmi_subdevice_alloc_and_add(): Allocate and add a new SPMI sub-device + * @sparent: SPMI parent device with previously registered SPMI controller + * + * Returns: + * Pointer to newly allocated SPMI sub-device for success or error pointer. + */ +struct spmi_subdevice *spmi_subdevice_alloc_and_add(struct spmi_device *sp= arent) +{ + struct spmi_subdevice *sub_sdev; + struct spmi_device *sdev; + int ret; + + sub_sdev =3D kzalloc_obj(*sub_sdev); + if (!sub_sdev) + return ERR_PTR(-ENOMEM); + + sdev =3D &sub_sdev->sdev; + sdev->ctrl =3D sparent->ctrl; + sdev->usid =3D sparent->usid; + + ret =3D ida_alloc(&spmi_subdevice_ida, GFP_KERNEL); + if (ret < 0) { + kfree(sub_sdev); + return ERR_PTR(ret); + } + sub_sdev->devid =3D ret; + + device_initialize(&sdev->dev); + sdev->dev.parent =3D &sparent->dev; + sdev->dev.bus =3D &spmi_bus_type; + sdev->dev.type =3D &spmi_subdev_type; + + ret =3D dev_set_name(&sdev->dev, "%u-%02x.%u.auto", + sdev->ctrl->nr, sdev->usid, sub_sdev->devid); + if (ret) + goto err_put_dev; + + ret =3D device_add(&sdev->dev); + if (ret) { + dev_err(&sdev->dev, "Can't add device, status %pe\n", ERR_PTR(ret)); + goto err_put_dev; + } + + return sub_sdev; + +err_put_dev: + put_device(&sdev->dev); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_NS_GPL(spmi_subdevice_alloc_and_add, "SPMI"); + /** * spmi_controller_alloc() - Allocate a new SPMI controller * @parent: parent device diff --git a/include/linux/spmi.h b/include/linux/spmi.h index 4eb9564a7fb3..a78a8924b2ac 100644 --- a/include/linux/spmi.h +++ b/include/linux/spmi.h @@ -69,6 +69,22 @@ int spmi_device_add(struct spmi_device *sdev); =20 void spmi_device_remove(struct spmi_device *sdev); =20 +/** + * struct spmi_subdevice - Basic representation of an SPMI sub-device + * @sdev: Sub-device representation of an SPMI device + * @devid: Platform Device ID of an SPMI sub-device + */ +struct spmi_subdevice { + struct spmi_device sdev; + unsigned int devid; +}; + +struct spmi_subdevice *spmi_subdevice_alloc_and_add(struct spmi_device *sp= arent); +void spmi_subdevice_remove(struct spmi_subdevice *sdev); + +struct spmi_subdevice *devm_spmi_subdevice_alloc_and_add(struct device *de= v, + struct spmi_device *sparent); + /** * struct spmi_controller - interface to the SPMI master controller * @dev: Driver model representation of the device. --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63E124499AE; Tue, 21 Jul 2026 09:36:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626601; cv=none; b=sojzOmBRoZ9t6lzQptN/m04fWLTCG+vjYS8N5qVx8t+gLlZYIelPTWJ/8K4HxINUWpETe95wbiybCC8JO6r0pj2bYNK25mW0g1PD7LIcN0R+K7RVloot+BleqF8lRaaCxfjNt0QtUU2vw1DIlHHioaIkpsd2+ANPlfKmrM33XBI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626601; c=relaxed/simple; bh=utd5tLs9eRc/+0TgfYH3QKd2/pYehtVh2YyAsapgfp4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Cban2roU1ywyyWVhi0rYdgLSeeok8XQWNg/4c4iBFS/mMOlaItaOZCl+4nsVmuxj2PQ19VPc6HmxTU2tUe6H40Ph8x+wLf3TArPziIrrxNxqt+4TmFn1sumRtrqpl1OJG4eGyhI2K7pWZYEvueK/oermxlbggwzUS1ci7OpUC6E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=ZofViD6i; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="ZofViD6i" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626598; bh=utd5tLs9eRc/+0TgfYH3QKd2/pYehtVh2YyAsapgfp4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZofViD6iQydDme7USYzFs9e/O7nbFqVJ5202nKhP1uoN02lbrobqHqtJGk5Bh5AMh aHqIubTjwZ58PZg4uBarJX9w9yln8JUWiZNHMU72cQBRsg9I9XWkZcwDNXar26ImF6 A2YEgmiPrKEM3fKNmPtqACYfV7U6YIERzBC5gMUofhHuuCwbInSKIczugsMSk793RD TeXGRDPJpseDvWgLEbQU1YvtD2I3/24KOo1g2T9cbsFjGaty9Ivkc52djC3J0e8BCy rpyN7qhW4gOUjTtdu8vFUd1aoqUlKA24da+OgbskSn4GZ0f93evU813X0rKS6StWqx j00Z2MHv0zgxA== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 9986017E0977; Tue, 21 Jul 2026 11:36:37 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com Subject: [PATCH v13 06/12] spmi: Add helper to get a parent SPMI device Date: Tue, 21 Jul 2026 11:36:20 +0200 Message-ID: <20260721093626.96264-7-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Drivers that register a SPMI sub-device as a platform_driver are not guaranteed to have a SPMI device as their parent: add a new helper `spmi_get_parent_spmi_device()` that takes a struct device and checks if there's a parent, and if that parent is actually a SPMI device by checking if its device type matches with SPMI: if so, returns a pointer to the relative struct spmi_device without incrementing any refcount. As a note, in the specific case of using this helper to retrieve a SPMI subdevice's parent, the spmi_subdevice_alloc_and_add() function does actually call device_add(), which will already take care of raising the refcount of the associated parent device. Signed-off-by: AngeloGioacchino Del Regno --- drivers/spmi/spmi.c | 23 +++++++++++++++++++++++ include/linux/spmi.h | 1 + 2 files changed, 24 insertions(+) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index bafb4c3e6c17..ec97f12046f5 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -431,6 +431,29 @@ struct spmi_device *spmi_find_device_by_of_node(struct= device_node *np) } EXPORT_SYMBOL_GPL(spmi_find_device_by_of_node); =20 +/** + * spmi_get_parent_spmi_device() - get the parent SPMI device from current= dev + * @dev: pointer to a subdevice on SPMI bus + * + * Checks if the passed device is a child of an SPMI device and returns a + * handle to the parent SPMI device without incrementing any refcount. + * + * Return: Handle to the parent SPMI device or NULL + */ +struct spmi_device *spmi_get_parent_spmi_device(struct device *dev) +{ + struct device *parent; + + if (dev && dev->parent) { + parent =3D dev->parent; + + if (parent->type =3D=3D &spmi_dev_type) + return to_spmi_device(parent); + } + return NULL; +} +EXPORT_SYMBOL_NS_GPL(spmi_get_parent_spmi_device, "SPMI"); + /** * spmi_device_alloc() - Allocate a new SPMI device * @ctrl: associated controller diff --git a/include/linux/spmi.h b/include/linux/spmi.h index a78a8924b2ac..4daebc980501 100644 --- a/include/linux/spmi.h +++ b/include/linux/spmi.h @@ -189,6 +189,7 @@ static inline void spmi_driver_unregister(struct spmi_d= river *sdrv) struct device_node; =20 struct spmi_device *spmi_find_device_by_of_node(struct device_node *np); +struct spmi_device *spmi_get_parent_spmi_device(struct device *dev); int spmi_register_read(struct spmi_device *sdev, u8 addr, u8 *buf); int spmi_ext_register_read(struct spmi_device *sdev, u8 addr, u8 *buf, size_t len); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C2D7448D0B; Tue, 21 Jul 2026 09:36:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626603; cv=none; b=fwwh639phjI0c+Lj5teIkI9v6TWib72N22QTnzWaLoME5Pq6uL1e2Zy2SicjlCoVJoBOjOSVLykrv+luJwUVEmxD7Bd5x2ZEBXGTHhMO7S6uOWu4dyUsGcNCL7FJU6YVJqPL66w9rCLo0Y3zNuEcmhN/jZ2Hr94Dt/SW/nV3RpM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626603; c=relaxed/simple; bh=pswUiFez+5qAkxoUz69vbtTQ9fzaOkvOFLl+A4NGdPU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gKehSd0mc0eEByLuKIqHAzLgLxzNZX+cEdDbuX0NAuY3hAyn0wB3BiC5yHHLPApJnVQFB+QwpdiW4lrOGj5kaYplLURGWjvUEUpx91z4muZYAAc7ovXFZwSX8eNK36J3NqlRcQmpF1jB1GmbRrBsbbXcwfjBheZogXIHZkafzKk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=XENnBmTh; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="XENnBmTh" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626599; bh=pswUiFez+5qAkxoUz69vbtTQ9fzaOkvOFLl+A4NGdPU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XENnBmThQii6IzhAfsTHaMmoAvhSHYhJI6re2FLuJSdPulHQhpdYrZQGmRkLYk6oq /T1PXVN6yvzzswJ4Trrq3kP6rFI1WAQ3nbwGtPAwTIwlL3go0QFx8Sl/wJG+cDOZqo Sy8PBlQCGp7Vvsi+UjN1Kjt4olmr8GmCXkFZBjK4nBHodTdYlrvPIrZ6k+Koc9XkId x27FfbSKwMdoZteWc6xl6HVQgZOoJINbxriLuz4mroGYfgtePqisP1oOdia/o2KQ06 rcoZ9fEzmtEsM/W8d5Je4osjb31HnADpX1RZ/lRMXbxdv48u/ekhkOTV4hauL3WZom G9yC8j7N/WekA== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id C48F317E0A45; Tue, 21 Jul 2026 11:36:38 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Andy Shevchenko Subject: [PATCH v13 07/12] nvmem: qcom-spmi-sdam: Migrate to devm_spmi_subdevice_alloc_and_add() Date: Tue, 21 Jul 2026 11:36:21 +0200 Message-ID: <20260721093626.96264-8-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some Qualcomm PMICs integrate a SDAM device, internally located in a specific address range reachable through SPMI communication. Instead of using the parent SPMI device (the main PMIC) as a kind of syscon in this driver, register a new SPMI sub-device for SDAM and initialize its own regmap with this sub-device's specific base address, retrieved from the devicetree. This allows to stop manually adding the register base address to every R/W call in this driver, as this can be, and is now, handled by the regmap API instead. Reviewed-by: Konrad Dybcio Tested-by: Neil Armstrong # on SM8650-QRD Acked-by: Srinivas Kandagatla Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/nvmem/Kconfig | 1 + drivers/nvmem/qcom-spmi-sdam.c | 41 ++++++++++++++++++++++++---------- 2 files changed, 30 insertions(+), 12 deletions(-) diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index c36c2a4c2a0b..a12e912ec17f 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -468,6 +468,7 @@ config NVMEM_SNVS_LPGPR config NVMEM_SPMI_SDAM tristate "SPMI SDAM Support" depends on SPMI + select REGMAP_SPMI help This driver supports the Shared Direct Access Memory Module on Qualcomm Technologies, Inc. PMICs. It provides the clients diff --git a/drivers/nvmem/qcom-spmi-sdam.c b/drivers/nvmem/qcom-spmi-sdam.c index 4f1cca6eab71..2aec95dff05d 100644 --- a/drivers/nvmem/qcom-spmi-sdam.c +++ b/drivers/nvmem/qcom-spmi-sdam.c @@ -9,6 +9,7 @@ #include #include #include +#include =20 #define SDAM_MEM_START 0x40 #define REGISTER_MAP_ID 0x40 @@ -20,7 +21,6 @@ struct sdam_chip { struct regmap *regmap; struct nvmem_config sdam_config; - unsigned int base; unsigned int size; }; =20 @@ -73,7 +73,7 @@ static int sdam_read(void *priv, unsigned int offset, voi= d *val, return -EINVAL; } =20 - rc =3D regmap_bulk_read(sdam->regmap, sdam->base + offset, val, bytes); + rc =3D regmap_bulk_read(sdam->regmap, offset, val, bytes); if (rc < 0) dev_err(dev, "Failed to read SDAM offset %#x len=3D%zd, rc=3D%d\n", offset, bytes, rc); @@ -100,7 +100,7 @@ static int sdam_write(void *priv, unsigned int offset, = void *val, return -EINVAL; } =20 - rc =3D regmap_bulk_write(sdam->regmap, sdam->base + offset, val, bytes); + rc =3D regmap_bulk_write(sdam->regmap, offset, val, bytes); if (rc < 0) dev_err(dev, "Failed to write SDAM offset %#x len=3D%zd, rc=3D%d\n", offset, bytes, rc); @@ -110,8 +110,17 @@ static int sdam_write(void *priv, unsigned int offset,= void *val, =20 static int sdam_probe(struct platform_device *pdev) { + struct regmap_config sdam_regmap_config =3D { + .reg_bits =3D 16, + .val_bits =3D 8, + .max_register =3D 0xff, + .fast_io =3D true, + }; struct sdam_chip *sdam; struct nvmem_device *nvmem; + struct spmi_device *sparent; + struct spmi_subdevice *sub_sdev; + struct device *dev =3D &pdev->dev; unsigned int val; int rc; =20 @@ -119,19 +128,26 @@ static int sdam_probe(struct platform_device *pdev) if (!sdam) return -ENOMEM; =20 - sdam->regmap =3D dev_get_regmap(pdev->dev.parent, NULL); - if (!sdam->regmap) { - dev_err(&pdev->dev, "Failed to get regmap handle\n"); - return -ENXIO; - } + sparent =3D spmi_get_parent_spmi_device(dev); + if (!sparent) + return -ENODEV; =20 - rc =3D of_property_read_u32(pdev->dev.of_node, "reg", &sdam->base); + sub_sdev =3D devm_spmi_subdevice_alloc_and_add(dev, sparent); + if (IS_ERR(sub_sdev)) + return PTR_ERR(sub_sdev); + + rc =3D device_property_read_u32(dev, "reg", &sdam_regmap_config.reg_base); if (rc < 0) { - dev_err(&pdev->dev, "Failed to get SDAM base, rc=3D%d\n", rc); + dev_err(dev, "Failed to get SDAM base, rc=3D%d\n", rc); return -EINVAL; } =20 - rc =3D regmap_read(sdam->regmap, sdam->base + SDAM_SIZE, &val); + sdam->regmap =3D devm_regmap_init_spmi_ext(&sub_sdev->sdev, &sdam_regmap_= config); + if (IS_ERR(sdam->regmap)) + return dev_err_probe(dev, PTR_ERR(sdam->regmap), + "Failed to get regmap handle\n"); + + rc =3D regmap_read(sdam->regmap, SDAM_SIZE, &val); if (rc < 0) { dev_err(&pdev->dev, "Failed to read SDAM_SIZE rc=3D%d\n", rc); return -EINVAL; @@ -159,7 +175,7 @@ static int sdam_probe(struct platform_device *pdev) } dev_dbg(&pdev->dev, "SDAM base=3D%#x size=3D%u registered successfully\n", - sdam->base, sdam->size); + sdam_regmap_config.reg_base, sdam->size); =20 return 0; } @@ -181,3 +197,4 @@ module_platform_driver(sdam_driver); =20 MODULE_DESCRIPTION("QCOM SPMI SDAM driver"); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS("SPMI"); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB5F64499A6; Tue, 21 Jul 2026 09:36:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626604; cv=none; b=oGKJqLflbb5td2c10EUiXPUI9ACNFkPLHGDCEQhI2prUvdO2RffrwKmNyOPBYYS4e6fZbXzcew9Yu8WWs+LhCFll0X281Nql2vXBYE0Ji+s5tM+GocxQzqNPgikdBSJW/3KroDBepgbN0LPdH3CviN3N2S2hVBibl1VO3WIq4/8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626604; c=relaxed/simple; bh=H/fS7FHOtWV8ZdGT1WLKtB81RYsNuNLxk+Fj4ckJr9Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QBjL7hZo1vGzSHCOQOtV2Qgql8h5mV0mJx1eKh8duBQ6EHOJ8nwOPhq8XEs3Nd9CBWMsgQ/FXx2QPo2phEHzhBcrBRxgJlzuAo6DHpNtfuCXxY8GlaEPCGo6Tcfo6u8TzDD5D3xL9QLcyGa44rchhbJYUvLf2N//mZTCCBLCl20= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=e58aEWLC; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="e58aEWLC" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626601; bh=H/fS7FHOtWV8ZdGT1WLKtB81RYsNuNLxk+Fj4ckJr9Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e58aEWLCArPPzYbbvOe2Iw7+PkDb63xOx/YzLuIX+CRfmTPRu2YvdYsaHcEM56j4f Pmal4wFrP8QkiIwwI2X+wM0a42KASrJhh/jBYlWTBmfvBLSO9ApWal6rPN5YMj+vXc ruprF2+KWsFTyIpr2hGd5DdJvrXxK/8AFKZxSo8Xk0egIdqS/mj/amY7lr9GMYnJb8 tNPv0yq8A3RuxmUFQdx8B3lqoQUFAu20Q4FqG3CTOt5w4CO7B2xqVlyzU7aj9f/aJN DcE/FDTT+W4cVfw0UQT0FLzU1Rrjpmme8zEuH7Vp4CCbA4s3EIdqk+vBlwmFDLYmZG 9TWq2I2XR8fnA== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 00E4317E0B71; Tue, 21 Jul 2026 11:36:39 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Sebastian Reichel , Andy Shevchenko Subject: [PATCH v13 08/12] power: reset: qcom-pon: Migrate to devm_spmi_subdevice_alloc_and_add() Date: Tue, 21 Jul 2026 11:36:22 +0200 Message-ID: <20260721093626.96264-9-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some Qualcomm PMICs integrates a Power On device supporting pwrkey and resin along with the Android reboot reason action identifier. Instead of using the parent SPMI device (the main PMIC) as a kind of syscon in this driver, register a new SPMI sub-device for PON and initialize its own regmap with this sub-device's specific base address, retrieved from the devicetree. This allows to stop manually adding the register base address to every R/W call in this driver, as this can be, and is now, handled by the regmap API instead. Reviewed-by: Sebastian Reichel Tested-by: Neil Armstrong # on SM8650-QRD Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/power/reset/qcom-pon.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c index 7e108982a582..cd7ba680b841 100644 --- a/drivers/power/reset/qcom-pon.c +++ b/drivers/power/reset/qcom-pon.c @@ -11,6 +11,7 @@ #include #include #include +#include =20 #define PON_SOFT_RB_SPARE 0x8f =20 @@ -22,7 +23,6 @@ struct qcom_pon { struct device *dev; struct regmap *regmap; - u32 baseaddr; struct reboot_mode_driver reboot_mode; long reason_shift; }; @@ -35,7 +35,7 @@ static int qcom_pon_reboot_mode_write(struct reboot_mode_= driver *reboot, int ret; =20 ret =3D regmap_update_bits(pon->regmap, - pon->baseaddr + PON_SOFT_RB_SPARE, + PON_SOFT_RB_SPARE, GENMASK(7, pon->reason_shift), magic << pon->reason_shift); if (ret < 0) @@ -46,6 +46,15 @@ static int qcom_pon_reboot_mode_write(struct reboot_mode= _driver *reboot, =20 static int qcom_pon_probe(struct platform_device *pdev) { + struct regmap_config qcom_pon_regmap_config =3D { + .reg_bits =3D 16, + .val_bits =3D 8, + .max_register =3D 0xff, + .fast_io =3D true, + }; + struct device *dev =3D &pdev->dev; + struct spmi_subdevice *sub_sdev; + struct spmi_device *sparent; struct qcom_pon *pon; long reason_shift; int error; @@ -56,17 +65,22 @@ static int qcom_pon_probe(struct platform_device *pdev) =20 pon->dev =3D &pdev->dev; =20 - pon->regmap =3D dev_get_regmap(pdev->dev.parent, NULL); - if (!pon->regmap) { - dev_err(&pdev->dev, "failed to locate regmap\n"); + sparent =3D spmi_get_parent_spmi_device(dev); + if (!sparent) return -ENODEV; - } =20 - error =3D of_property_read_u32(pdev->dev.of_node, "reg", - &pon->baseaddr); + sub_sdev =3D devm_spmi_subdevice_alloc_and_add(dev, sparent); + if (IS_ERR(sub_sdev)) + return PTR_ERR(sub_sdev); + + error =3D device_property_read_u32(dev, "reg", &qcom_pon_regmap_config.re= g_base); if (error) return error; =20 + pon->regmap =3D devm_regmap_init_spmi_ext(&sub_sdev->sdev, &qcom_pon_regm= ap_config); + if (IS_ERR(pon->regmap)) + return PTR_ERR(pon->regmap); + reason_shift =3D (long)of_device_get_match_data(&pdev->dev); =20 if (reason_shift !=3D NO_REASON_SHIFT) { @@ -106,3 +120,4 @@ module_platform_driver(qcom_pon_driver); =20 MODULE_DESCRIPTION("Qualcomm Power On driver"); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS("SPMI"); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D86C5446847; Tue, 21 Jul 2026 09:36:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626605; cv=none; b=YgL6pMpD0o85gPg4Fia51D7WPSTI6VPkoQospRMX/s3L4jB19OLmbbpJ3afeErWhGzl1rOihnCq0CJl4XrOU1ZHbWV+yydrHay7xm/mnGl/IYrsOe1Cjtqu4x2s8RGkIyuis+LiB6SSzup4lC3/jeYrsHSzDChsc85wmtql1v3M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626605; c=relaxed/simple; bh=enDIhVLctEZZCNGenoTWwC3xY076j1epPWpsHW+gzYA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=f0gw5xDivNJpXF6SkVjaLdvW6vmgwZ1ZJll5hn0JD9qZ3EM7Qt0bJNzJ6KN3AFH+5CV1LrD/4bKiS2MwvyhDU6Vbz9Xsd/hsxaI+ei/FzeYEnFYzZ8xU3d5EU0m0ASiCrTx8KbR57YH0Rdb8N/6YxFMR6IDBHkV301npd84V4Sg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=mAjji0eP; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="mAjji0eP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626602; bh=enDIhVLctEZZCNGenoTWwC3xY076j1epPWpsHW+gzYA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mAjji0eP5kmmOgaIGjYtTwdF0e7ihktfNiNR1oN1UHFlqlzaleSE0I09S/tZiHvIG 79X4RhNM+0BNjjyRizs9Yo2OTq1ByaOeaNYJyPkRZyMYFRW8H10ZP9NEgKbwonMFIc JayBl0onI+dYM3zdMpL0iQrguv5AwgHKcDxWjdovCEURrSEynPQU6aJaHDw5eejWSL F+IA85wMhoweoglqbF+tPPqBUiOzB7HvSW3icnSN/pulysIn6CcGeMitSWkHjKhgow UwJNi6rot5FsPHCE2sKARzk4GrdD3DbjrOMUU6cwdcv/5MkqYR7Mj7pZBYJxKoom2Y +MQ3ZsgsdyLMA== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 39E5517E0FA2; Tue, 21 Jul 2026 11:36:41 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Abel Vesa , Andy Shevchenko Subject: [PATCH v13 09/12] phy: qualcomm: eusb2-repeater: Migrate to devm_spmi_subdevice_alloc_and_add() Date: Tue, 21 Jul 2026 11:36:23 +0200 Message-ID: <20260721093626.96264-10-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some Qualcomm PMICs integrate an USB Repeater device, used to convert between eUSB2 and USB 2.0 signaling levels, reachable in a specific address range over SPMI. Instead of using the parent SPMI device (the main PMIC) as a kind of syscon in this driver, register a new SPMI sub-device for EUSB2 and initialize its own regmap with this sub-device's specific base address, retrieved from the devicetree. This allows to stop manually adding the register base address to every R/W call in this driver, as this can be, and is now, handled by the regmap API instead. Tested-by: Neil Armstrong # on SM8650-QRD Reviewed-by: Abel Vesa Acked-by: Vinod Koul Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/phy/qualcomm/Kconfig | 2 + .../phy/qualcomm/phy-qcom-eusb2-repeater.c | 52 ++++++++++++------- 2 files changed, 34 insertions(+), 20 deletions(-) diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index 60a0ead127fa..902a788f35f1 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -128,7 +128,9 @@ config PHY_QCOM_QUSB2 config PHY_QCOM_EUSB2_REPEATER tristate "Qualcomm PMIC eUSB2 Repeater Driver" depends on OF && (ARCH_QCOM || COMPILE_TEST) + depends on SPMI select GENERIC_PHY + select REGMAP_SPMI help Enable support for the USB high-speed eUSB2 repeater on Qualcomm PMICs. The repeater is paired with a Synopsys or M31 eUSB2 Phy diff --git a/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c b/drivers/phy/q= ualcomm/phy-qcom-eusb2-repeater.c index efeec4709a15..89bc1c89fc85 100644 --- a/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c +++ b/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c @@ -9,6 +9,7 @@ #include #include #include +#include =20 /* eUSB2 status registers */ #define EUSB2_RPTR_STATUS 0x08 @@ -66,7 +67,6 @@ struct eusb2_repeater { struct phy *phy; struct regulator_bulk_data *vregs; const struct eusb2_repeater_cfg *cfg; - u32 base; enum phy_mode mode; }; =20 @@ -143,7 +143,6 @@ static int eusb2_repeater_init(struct phy *phy) struct eusb2_repeater *rptr =3D phy_get_drvdata(phy); struct device_node *np =3D rptr->dev->of_node; struct regmap *regmap =3D rptr->regmap; - u32 base =3D rptr->base; u32 poll_val; s32 dt_val; int ret; @@ -154,37 +153,37 @@ static int eusb2_repeater_init(struct phy *phy) if (ret) return ret; =20 - regmap_write(regmap, base + EUSB2_EN_CTL1, EUSB2_RPTR_EN); + regmap_write(regmap, EUSB2_EN_CTL1, EUSB2_RPTR_EN); =20 /* Write registers from init table */ for (int i =3D 0; i < rptr->cfg->init_tbl_num; i++) - regmap_write(regmap, base + rptr->cfg->init_tbl[i].reg, + regmap_write(regmap, rptr->cfg->init_tbl[i].reg, rptr->cfg->init_tbl[i].value); =20 /* Override registers from devicetree values */ if (!of_property_read_u8(np, "qcom,tune-usb2-preem", &val)) - regmap_write(regmap, base + EUSB2_TUNE_USB2_PREEM, val); + regmap_write(regmap, EUSB2_TUNE_USB2_PREEM, val); =20 if (!of_property_read_u8(np, "qcom,tune-usb2-disc-thres", &val)) - regmap_write(regmap, base + EUSB2_TUNE_HSDISC, val); + regmap_write(regmap, EUSB2_TUNE_HSDISC, val); =20 if (!of_property_read_u8(np, "qcom,tune-usb2-amplitude", &val)) - regmap_write(regmap, base + EUSB2_TUNE_IUSB2, val); + regmap_write(regmap, EUSB2_TUNE_IUSB2, val); =20 if (!of_property_read_u8(np, "qcom,tune-res-fsdif", &val)) - regmap_write(regmap, base + EUSB2_TUNE_RES_FSDIF, val); + regmap_write(regmap, EUSB2_TUNE_RES_FSDIF, val); =20 if (!of_property_read_s32(np, "qcom,squelch-detector-bp", &dt_val)) { for (i =3D 0; i < ARRAY_SIZE(squelch_detector); i++) { if (squelch_detector[i] =3D=3D dt_val) { - regmap_write(regmap, base + EUSB2_TUNE_SQUELCH_U, i); + regmap_write(regmap, EUSB2_TUNE_SQUELCH_U, i); break; } } } =20 /* Wait for status OK */ - ret =3D regmap_read_poll_timeout(regmap, base + EUSB2_RPTR_STATUS, poll_v= al, + ret =3D regmap_read_poll_timeout(regmap, EUSB2_RPTR_STATUS, poll_val, poll_val & RPTR_OK, 10, 5); if (ret) dev_err(rptr->dev, "initialization timed-out\n"); @@ -197,7 +196,6 @@ static int eusb2_repeater_set_mode(struct phy *phy, { struct eusb2_repeater *rptr =3D phy_get_drvdata(phy); struct regmap *regmap =3D rptr->regmap; - u32 base =3D rptr->base; =20 switch (mode) { case PHY_MODE_USB_HOST: @@ -206,8 +204,8 @@ static int eusb2_repeater_set_mode(struct phy *phy, * per eUSB 1.2 Spec. Below implement software workaround until * PHY and controller is fixing seen observation. */ - regmap_write(regmap, base + EUSB2_FORCE_EN_5, F_CLK_19P2M_EN); - regmap_write(regmap, base + EUSB2_FORCE_VAL_5, V_CLK_19P2M_EN); + regmap_write(regmap, EUSB2_FORCE_EN_5, F_CLK_19P2M_EN); + regmap_write(regmap, EUSB2_FORCE_VAL_5, V_CLK_19P2M_EN); break; case PHY_MODE_USB_DEVICE: /* @@ -216,8 +214,8 @@ static int eusb2_repeater_set_mode(struct phy *phy, * repeater doesn't clear previous value due to shared * regulators (say host <-> device mode switch). */ - regmap_write(regmap, base + EUSB2_FORCE_EN_5, 0); - regmap_write(regmap, base + EUSB2_FORCE_VAL_5, 0); + regmap_write(regmap, EUSB2_FORCE_EN_5, 0); + regmap_write(regmap, EUSB2_FORCE_VAL_5, 0); break; default: return -EINVAL; @@ -242,11 +240,18 @@ static const struct phy_ops eusb2_repeater_ops =3D { =20 static int eusb2_repeater_probe(struct platform_device *pdev) { + struct regmap_config eusb2_regmap_config =3D { + .reg_bits =3D 16, + .val_bits =3D 8, + .max_register =3D 0xff, + .fast_io =3D true, + }; + struct spmi_device *sparent; struct eusb2_repeater *rptr; + struct spmi_subdevice *sub_sdev; struct device *dev =3D &pdev->dev; struct phy_provider *phy_provider; struct device_node *np =3D dev->of_node; - u32 res; int ret; =20 rptr =3D devm_kzalloc(dev, sizeof(*rptr), GFP_KERNEL); @@ -260,15 +265,21 @@ static int eusb2_repeater_probe(struct platform_devic= e *pdev) if (!rptr->cfg) return -EINVAL; =20 - rptr->regmap =3D dev_get_regmap(dev->parent, NULL); - if (!rptr->regmap) + sparent =3D spmi_get_parent_spmi_device(dev); + if (!sparent) return -ENODEV; =20 - ret =3D of_property_read_u32(np, "reg", &res); + sub_sdev =3D devm_spmi_subdevice_alloc_and_add(dev, sparent); + if (IS_ERR(sub_sdev)) + return PTR_ERR(sub_sdev); + + ret =3D device_property_read_u32(dev, "reg", &eusb2_regmap_config.reg_bas= e); if (ret < 0) return ret; =20 - rptr->base =3D res; + rptr->regmap =3D devm_regmap_init_spmi_ext(&sub_sdev->sdev, &eusb2_regmap= _config); + if (IS_ERR(rptr->regmap)) + return PTR_ERR(rptr->regmap); =20 ret =3D eusb2_repeater_init_vregs(rptr); if (ret < 0) { @@ -335,3 +346,4 @@ module_platform_driver(eusb2_repeater_driver); =20 MODULE_DESCRIPTION("Qualcomm PMIC eUSB2 Repeater driver"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("SPMI"); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38F1A450902; Tue, 21 Jul 2026 09:36:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626606; cv=none; b=tAFwKO9dfF0HEp9fx+njf/VKdq+g64tktcJbt/pYG7J08HUgX5f2QXbuCvoAvPsZbYOrk0oMgIB39df7miyBPbLl0n7SJUaMLoeFAZ1lLK2Tts8AsoL8wcbfEqVX3pVJRG9o+jclgjUQFTmJ4i6xuuqVSGgT9BMQkvAZAhh33Qc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626606; c=relaxed/simple; bh=z5dlYPjg1Ytbyautxd5yMIK4D3SGmzbQytE2LuHbgr4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Xf6TJOGpI5ENZH95CONZiTCHQ5baMRc/k1+ZZli1rMyItW+9F9ynVYRkUYfSMlxoY/HxDreO0rXIoQ25HvRTccdr5Clu0H7eotlFDQd2UMa4994y50w0SrzDCstPedney6WcDp7d3AA046JXbMk5gJEGTon3L6r/PxK7jT11kB4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=MV1TvkWp; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="MV1TvkWp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626603; bh=z5dlYPjg1Ytbyautxd5yMIK4D3SGmzbQytE2LuHbgr4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MV1TvkWpsFI79E8TxH2+tYTiBpD4xhDCn4JkGAGb726gsXlYqZnCM9pSk4XyMPKJH tuvpFM3fqLJT0gcJSez5kVv4oQTpxPxd7ND4T+vrfT7WNO/EKSk3PCstKf76ZUMZBj OyL76OsCAFk7D4meE4xN+3Uag7nwxIbYVscdqrmwJQKxhOiuILZcZ3QV4b9sA2NPtr A9d8MyTswhWMKXOUc+OJAN1DttiZslx4E66RcPEID/62NAxDd9yQCNDMjr0PSu2PxH xHyGmCIk3vyT2BOhV5qk/h6bPMDBSGKsPqz7l/FHMaud/b4jkOG8MBtdiEpog/t0g5 T4HBJFj/8uXEw== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 7395017E0977; Tue, 21 Jul 2026 11:36:42 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Andy Shevchenko Subject: [PATCH v13 10/12] misc: qcom-coincell: Migrate to devm_spmi_subdevice_alloc_and_add() Date: Tue, 21 Jul 2026 11:36:24 +0200 Message-ID: <20260721093626.96264-11-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some Qualcomm PMICs integrate a charger for coincells, usually powering an RTC when external (or main battery) power is missing. Instead of using the parent SPMI device (the main PMIC) as a kind of syscon in this driver, register a new SPMI sub-device and initialize its own regmap with this sub-device's specific base address, retrieved from the devicetree. This allows to stop manually adding the register base address to every R/W call in this driver, as this can be, and is now, handled by the regmap API instead. Acked-by: Greg Kroah-Hartman Tested-by: Neil Armstrong # on SM8650-QRD Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/misc/Kconfig | 2 ++ drivers/misc/qcom-coincell.c | 45 +++++++++++++++++++++++++----------- 2 files changed, 34 insertions(+), 13 deletions(-) diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index e594edf86941..21d2a2d2c6e7 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -291,6 +291,8 @@ config HP_ILO config QCOM_COINCELL tristate "Qualcomm coincell charger support" depends on MFD_SPMI_PMIC || COMPILE_TEST + depends on SPMI + select REGMAP_SPMI help This driver supports the coincell block found inside of Qualcomm PMICs. The coincell charger provides a means to diff --git a/drivers/misc/qcom-coincell.c b/drivers/misc/qcom-coincell.c index 3c57f7429147..28f48f60ecb7 100644 --- a/drivers/misc/qcom-coincell.c +++ b/drivers/misc/qcom-coincell.c @@ -9,11 +9,11 @@ #include #include #include +#include =20 struct qcom_coincell { struct device *dev; struct regmap *regmap; - u32 base_addr; }; =20 #define QCOM_COINCELL_REG_RSET 0x44 @@ -35,7 +35,7 @@ static int qcom_coincell_chgr_config(struct qcom_coincell= *chgr, int rset, /* if disabling, just do that and skip other operations */ if (!enable) return regmap_write(chgr->regmap, - chgr->base_addr + QCOM_COINCELL_REG_ENABLE, 0); + QCOM_COINCELL_REG_ENABLE, 0); =20 /* find index for current-limiting resistor */ for (i =3D 0; i < ARRAY_SIZE(qcom_rset_map); i++) @@ -58,7 +58,7 @@ static int qcom_coincell_chgr_config(struct qcom_coincell= *chgr, int rset, } =20 rc =3D regmap_write(chgr->regmap, - chgr->base_addr + QCOM_COINCELL_REG_RSET, i); + QCOM_COINCELL_REG_RSET, i); if (rc) { /* * This is mainly to flag a bad base_addr (reg) from dts. @@ -71,19 +71,28 @@ static int qcom_coincell_chgr_config(struct qcom_coince= ll *chgr, int rset, } =20 rc =3D regmap_write(chgr->regmap, - chgr->base_addr + QCOM_COINCELL_REG_VSET, j); + QCOM_COINCELL_REG_VSET, j); if (rc) return rc; =20 /* set 'enable' register */ return regmap_write(chgr->regmap, - chgr->base_addr + QCOM_COINCELL_REG_ENABLE, + QCOM_COINCELL_REG_ENABLE, QCOM_COINCELL_ENABLE); } =20 static int qcom_coincell_probe(struct platform_device *pdev) { - struct device_node *node =3D pdev->dev.of_node; + struct regmap_config qcom_coincell_regmap_config =3D { + .reg_bits =3D 16, + .val_bits =3D 8, + .max_register =3D 0xff, + .fast_io =3D true, + }; + struct device *dev =3D &pdev->dev; + struct device_node *node =3D dev->of_node; + struct spmi_subdevice *sub_sdev; + struct spmi_device *sparent; struct qcom_coincell chgr; u32 rset =3D 0; u32 vset =3D 0; @@ -92,16 +101,25 @@ static int qcom_coincell_probe(struct platform_device = *pdev) =20 chgr.dev =3D &pdev->dev; =20 - chgr.regmap =3D dev_get_regmap(pdev->dev.parent, NULL); - if (!chgr.regmap) { - dev_err(chgr.dev, "Unable to get regmap\n"); - return -EINVAL; - } - - rc =3D of_property_read_u32(node, "reg", &chgr.base_addr); + rc =3D device_property_read_u32(dev, "reg", &qcom_coincell_regmap_config.= reg_base); if (rc) return rc; =20 + sparent =3D spmi_get_parent_spmi_device(dev); + if (!sparent) + return -ENODEV; + + sub_sdev =3D devm_spmi_subdevice_alloc_and_add(dev, sparent); + if (IS_ERR(sub_sdev)) + return PTR_ERR(sub_sdev); + + chgr.regmap =3D devm_regmap_init_spmi_ext(&sub_sdev->sdev, + &qcom_coincell_regmap_config); + if (IS_ERR(chgr.regmap)) { + dev_err(chgr.dev, "Unable to get regmap\n"); + return PTR_ERR(chgr.regmap); + } + enable =3D !of_property_read_bool(node, "qcom,charger-disable"); =20 if (enable) { @@ -142,3 +160,4 @@ module_platform_driver(qcom_coincell_driver); =20 MODULE_DESCRIPTION("Qualcomm PMIC coincell charger driver"); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS("SPMI"); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7CE3E446078; Tue, 21 Jul 2026 09:36:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626608; cv=none; b=KMQk97lkzKZGuNymz9UBr0Okhhllam/xN3Lb0OzZLdz8LPyx7rtsg2v4zc3BllonHfLosW3LLa8dtTVGB27oOWVeK2Ibw4kYNLjdH0NyfX9wUGV3UuuH6x4crXQ5kMrittQ5VJLKNI+36rKx3ifMZKmbzR7sz9+TR7N5TWNgFow= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626608; c=relaxed/simple; bh=sxF5LetVu7zGLV6cbU8ahvt1J88FCWsP6YS/9yF5y1g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IaIiFu0PFZ1Ko9Jj/zWWGgGr+fNoA9wmoYst2l3jkOSuf9jGqQ7wzWQHdBuEfI0i0L4+YilQ0E1h+WLrqYFZ/okbgqBwSS2+UB2csjcUe5eE3Lb72Y+H0hQendxGPZ3DE4yjH9/7IBBN0B/9uR7LcmChATqCP81ZcEOUUGyfvV8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=OrZD49Yi; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="OrZD49Yi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626604; bh=sxF5LetVu7zGLV6cbU8ahvt1J88FCWsP6YS/9yF5y1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OrZD49YimfjrLkTu9A5AhMoI7AkeBgGpvLjRxN72kUzyVDKdK/i288ulesM1YdB2h mai40SuDrNXI2huK4h0/7u4WnO6bwZV0ijS8lIDxYGXlPEdJ/EuKZWL4cgDamb0bmZ 2Au/Pb6SHzciIBDNoQnqcjdggEe4jvL0Lqnas/LCLCcqj3UsWhzDBEk1SfopIaIV6T 6HZKOvJonx1pdDOICOz0hOkyH1BHy1wglIyRxKbein0LjWnoEepgZAiflCgWEWx7sM iOffjwRX+5MfsUiKHOXqgQ1Yx5TmdexRn6tv31Pb8KvXsuJJGNnFIgFKnx58Rr854B Yu78kwANT356w== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id A53EE17E0A45; Tue, 21 Jul 2026 11:36:43 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Jonathan Cameron , Andy Shevchenko Subject: [PATCH v13 11/12] iio: adc: qcom-spmi-iadc: Migrate to devm_spmi_subdevice_alloc_and_add() Date: Tue, 21 Jul 2026 11:36:25 +0200 Message-ID: <20260721093626.96264-12-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some Qualcomm PMICs integrate an Current ADC device, reachable in a specific address range over SPMI. Instead of using the parent SPMI device (the main PMIC) as a kind of syscon in this driver, register a new SPMI sub-device and initialize its own regmap with this sub-device's specific base address, retrieved from the devicetree. This allows to stop manually adding the register base address to every R/W call in this driver, as this can be, and is now, handled by the regmap API instead. Reviewed-by: Jonathan Cameron Tested-by: Neil Armstrong # on SM8650-QRD Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/iio/adc/qcom-spmi-iadc.c | 33 ++++++++++++++++++++++---------- 1 file changed, 23 insertions(+), 10 deletions(-) diff --git a/drivers/iio/adc/qcom-spmi-iadc.c b/drivers/iio/adc/qcom-spmi-i= adc.c index 0ec3a0c4b1de..21e35df82193 100644 --- a/drivers/iio/adc/qcom-spmi-iadc.c +++ b/drivers/iio/adc/qcom-spmi-iadc.c @@ -16,6 +16,7 @@ #include #include #include +#include =20 /* IADC register and bit definition */ #define IADC_REVISION2 0x1 @@ -94,7 +95,6 @@ * struct iadc_chip - IADC Current ADC device structure. * @regmap: regmap for register read/write. * @dev: This device pointer. - * @base: base offset for the ADC peripheral. * @rsense: Values of the internal and external sense resister in micro Oh= ms. * @poll_eoc: Poll for end of conversion instead of waiting for IRQ. * @offset: Raw offset values for the internal and external channels. @@ -105,7 +105,6 @@ struct iadc_chip { struct regmap *regmap; struct device *dev; - u16 base; bool poll_eoc; u32 rsense[2]; u16 offset[2]; @@ -119,7 +118,7 @@ static int iadc_read(struct iadc_chip *iadc, u16 offset= , u8 *data) unsigned int val; int ret; =20 - ret =3D regmap_read(iadc->regmap, iadc->base + offset, &val); + ret =3D regmap_read(iadc->regmap, offset, &val); if (ret < 0) return ret; =20 @@ -129,7 +128,7 @@ static int iadc_read(struct iadc_chip *iadc, u16 offset= , u8 *data) =20 static int iadc_write(struct iadc_chip *iadc, u16 offset, u8 data) { - return regmap_write(iadc->regmap, iadc->base + offset, data); + return regmap_write(iadc->regmap, offset, data); } =20 static int iadc_reset(struct iadc_chip *iadc) @@ -270,7 +269,7 @@ static int iadc_poll_wait_eoc(struct iadc_chip *iadc, u= nsigned int interval_us) =20 static int iadc_read_result(struct iadc_chip *iadc, u16 *data) { - return regmap_bulk_read(iadc->regmap, iadc->base + IADC_DATA, data, 2); + return regmap_bulk_read(iadc->regmap, IADC_DATA, data, 2); } =20 static int iadc_do_conversion(struct iadc_chip *iadc, int chan, u16 *data) @@ -488,12 +487,19 @@ static void iadc_disable_irq_wake(void *data) =20 static int iadc_probe(struct platform_device *pdev) { + struct regmap_config iadc_regmap_config =3D { + .reg_bits =3D 16, + .val_bits =3D 8, + .max_register =3D 0xff, + .fast_io =3D true, + }; struct device_node *node =3D pdev->dev.of_node; struct device *dev =3D &pdev->dev; + struct spmi_subdevice *sub_sdev; + struct spmi_device *sparent; struct iio_dev *indio_dev; struct iadc_chip *iadc; int ret, irq_eoc; - u32 res; =20 indio_dev =3D devm_iio_device_alloc(dev, sizeof(*iadc)); if (!indio_dev) @@ -502,18 +508,24 @@ static int iadc_probe(struct platform_device *pdev) iadc =3D iio_priv(indio_dev); iadc->dev =3D dev; =20 - iadc->regmap =3D dev_get_regmap(dev->parent, NULL); - if (!iadc->regmap) + sparent =3D spmi_get_parent_spmi_device(dev); + if (!sparent) return -ENODEV; =20 + sub_sdev =3D devm_spmi_subdevice_alloc_and_add(dev, sparent); + if (IS_ERR(sub_sdev)) + return PTR_ERR(sub_sdev); + init_completion(&iadc->complete); mutex_init(&iadc->lock); =20 - ret =3D of_property_read_u32(node, "reg", &res); + ret =3D device_property_read_u32(dev, "reg", &iadc_regmap_config.reg_base= ); if (ret < 0) return -ENODEV; =20 - iadc->base =3D res; + iadc->regmap =3D devm_regmap_init_spmi_ext(&sub_sdev->sdev, &iadc_regmap_= config); + if (IS_ERR(iadc->regmap)) + return PTR_ERR(iadc->regmap); =20 ret =3D iadc_version_check(iadc); if (ret < 0) @@ -596,3 +608,4 @@ MODULE_ALIAS("platform:qcom-spmi-iadc"); MODULE_DESCRIPTION("Qualcomm SPMI PMIC current ADC driver"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Ivan T. Ivanov "); +MODULE_IMPORT_NS("SPMI"); --=20 2.55.0 From nobody Sat Jul 25 00:58:58 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2D0C4657F2; Tue, 21 Jul 2026 09:36:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626609; cv=none; b=tac0x9i5+3e9fnq8epzj96zaa6NuPm8lPz9VCAYL87z+Qhk0Zy0ncdDib7RhQMAAf5jIC9Vf5SRmfCIlyz60oOP+9z90Wc2hDZiPsg/IDaUMaL79ADwCMAHSoUBkVJeyqXsNXpdKmgJC9C8Wecv43EbvgsOWd/Z0mq3GFKhg3UA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626609; c=relaxed/simple; bh=j2X5dwZMV4sl4tTCokUqzE+ScAYsMKJ8lYfgrAI1WxU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=u4/xbvXy2M+eMeSVsaTgCuBrWBmgtCr/o11o2P6GYJKRCuC4TMVlbCOsbo+xA3omfiqqdMSuOH5WzZrqKVH53d0zq8IVgO0nlMCTgQMhFdR4177vKddzvt7zwh9RkAUnxfQVerpVcoG3pqLVj4Cf6R4S80H22tZUy3IgL8KunZA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=Fo30lcmE; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="Fo30lcmE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1784626606; bh=j2X5dwZMV4sl4tTCokUqzE+ScAYsMKJ8lYfgrAI1WxU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fo30lcmEabcbTjZ/3F+RDkPLcC5RAqtt/gM5pgZOUELC1r0jXdTRAX4+cbipphTeA YMAqK/sJk9oM9SxK7GHff/JRq/6U9aW86R3s4VkOcSWf3S2/ZYVqVPqRXYJWNt4EDe M189QPnyttfr+s4sZz9oEVWYpP55dzB2hYLmU4jQRWJn7J2O8p6iiCr1qZF/SZ1pKQ pGz8RO6idOJ8aTJI2+GRvv2TjeDzqiE66Qw39doosvtPHkO0ftaRKwN4Se3gOUiYxg 7kioN66Z0PKcQdGsMsfBZUoCVfOS9HohmfEgP4cCYC2qf71n43uZZWdm7xatwT2ffu eSh0Q3sKpu+eA== Received: from IcarusMOD.eternityproject.eu (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id DD6D917E0B71; Tue, 21 Jul 2026 11:36:44 +0200 (CEST) From: AngeloGioacchino Del Regno To: jic23@kernel.org, sboyd@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, srini@kernel.org, vkoul@kernel.org, neil.armstrong@linaro.org, sre@kernel.org, angelogioacchino.delregno@collabora.com, krzk@kernel.org, dmitry.baryshkov@oss.qualcomm.com, quic_wcheng@quicinc.com, melody.olvera@oss.qualcomm.com, quic_nsekar@quicinc.com, ivo.ivanov.ivanov1@gmail.com, abelvesa@kernel.org, luca.weiss@fairphone.com, konrad.dybcio@oss.qualcomm.com, mitltlatltl@gmail.com, krishna.kurapati@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, kernel@collabora.com, Jonathan Cameron , Andy Shevchenko Subject: [PATCH v13 12/12] iio: adc: qcom-spmi-iadc: Remove regmap R/W wrapper functions Date: Tue, 21 Jul 2026 11:36:26 +0200 Message-ID: <20260721093626.96264-13-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> References: <20260721093626.96264-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This driver doesn't need to add any register base address to any regmap call anymore since it was migrated to register as a SPMI subdevice with its own regmap reg_base, which makes the regmap API to automatically add such base address internally. Since the iadc_{read,write,read_result}() functions now only do call regmap_{read,write,bulk_read}() and nothing else, simplify the driver by removing them and by calling regmap APIs directly. Reviewed-by: Jonathan Cameron Tested-by: Neil Armstrong # on SM8650-QRD Reviewed-by: Andy Shevchenko Signed-off-by: AngeloGioacchino Del Regno --- drivers/iio/adc/qcom-spmi-iadc.c | 89 ++++++++++++-------------------- 1 file changed, 33 insertions(+), 56 deletions(-) diff --git a/drivers/iio/adc/qcom-spmi-iadc.c b/drivers/iio/adc/qcom-spmi-i= adc.c index 21e35df82193..196525ba0b4b 100644 --- a/drivers/iio/adc/qcom-spmi-iadc.c +++ b/drivers/iio/adc/qcom-spmi-iadc.c @@ -113,77 +113,59 @@ struct iadc_chip { struct completion complete; }; =20 -static int iadc_read(struct iadc_chip *iadc, u16 offset, u8 *data) -{ - unsigned int val; - int ret; - - ret =3D regmap_read(iadc->regmap, offset, &val); - if (ret < 0) - return ret; - - *data =3D val; - return 0; -} - -static int iadc_write(struct iadc_chip *iadc, u16 offset, u8 data) -{ - return regmap_write(iadc->regmap, offset, data); -} - static int iadc_reset(struct iadc_chip *iadc) { - u8 data; + u32 data; int ret; =20 - ret =3D iadc_write(iadc, IADC_SEC_ACCESS, IADC_SEC_ACCESS_DATA); + ret =3D regmap_write(iadc->regmap, IADC_SEC_ACCESS, IADC_SEC_ACCESS_DATA); if (ret < 0) return ret; =20 - ret =3D iadc_read(iadc, IADC_PERH_RESET_CTL3, &data); + ret =3D regmap_read(iadc->regmap, IADC_PERH_RESET_CTL3, &data); if (ret < 0) return ret; =20 - ret =3D iadc_write(iadc, IADC_SEC_ACCESS, IADC_SEC_ACCESS_DATA); + ret =3D regmap_write(iadc->regmap, IADC_SEC_ACCESS, IADC_SEC_ACCESS_DATA); if (ret < 0) return ret; =20 data |=3D IADC_FOLLOW_WARM_RB; =20 - return iadc_write(iadc, IADC_PERH_RESET_CTL3, data); + return regmap_write(iadc->regmap, IADC_PERH_RESET_CTL3, data); } =20 static int iadc_set_state(struct iadc_chip *iadc, bool state) { - return iadc_write(iadc, IADC_EN_CTL1, state ? IADC_EN_CTL1_SET : 0); + return regmap_write(iadc->regmap, IADC_EN_CTL1, state ? IADC_EN_CTL1_SET = : 0); } =20 static void iadc_status_show(struct iadc_chip *iadc) { - u8 mode, sta1, chan, dig, en, req; + u32 mode, sta1, chan, dig, en, req; int ret; =20 - ret =3D iadc_read(iadc, IADC_MODE_CTL, &mode); + ret =3D regmap_read(iadc->regmap, IADC_MODE_CTL, &mode); if (ret < 0) return; =20 - ret =3D iadc_read(iadc, IADC_DIG_PARAM, &dig); + ret =3D regmap_read(iadc->regmap, IADC_DIG_PARAM, &dig); if (ret < 0) return; =20 - ret =3D iadc_read(iadc, IADC_CH_SEL_CTL, &chan); + ret =3D regmap_read(iadc->regmap, IADC_CH_SEL_CTL, &chan); if (ret < 0) return; =20 - ret =3D iadc_read(iadc, IADC_CONV_REQ, &req); + ret =3D regmap_read(iadc->regmap, IADC_CONV_REQ, &req); if (ret < 0) return; =20 - ret =3D iadc_read(iadc, IADC_STATUS1, &sta1); + ret =3D regmap_read(iadc->regmap, IADC_STATUS1, &sta1); if (ret < 0) return; =20 - ret =3D iadc_read(iadc, IADC_EN_CTL1, &en); + ret =3D regmap_read(iadc->regmap, IADC_EN_CTL1, &en); if (ret < 0) return; =20 @@ -199,34 +181,34 @@ static int iadc_configure(struct iadc_chip *iadc, int= channel) =20 /* Mode selection */ mode =3D (IADC_OP_MODE_NORMAL << IADC_OP_MODE_SHIFT) | IADC_TRIM_EN; - ret =3D iadc_write(iadc, IADC_MODE_CTL, mode); + ret =3D regmap_write(iadc->regmap, IADC_MODE_CTL, mode); if (ret < 0) return ret; =20 /* Channel selection */ - ret =3D iadc_write(iadc, IADC_CH_SEL_CTL, channel); + ret =3D regmap_write(iadc->regmap, IADC_CH_SEL_CTL, channel); if (ret < 0) return ret; =20 /* Digital parameter setup */ decim =3D IADC_DEF_DECIMATION << IADC_DIG_DEC_RATIO_SEL_SHIFT; - ret =3D iadc_write(iadc, IADC_DIG_PARAM, decim); + ret =3D regmap_write(iadc->regmap, IADC_DIG_PARAM, decim); if (ret < 0) return ret; =20 /* HW settle time delay */ - ret =3D iadc_write(iadc, IADC_HW_SETTLE_DELAY, IADC_DEF_HW_SETTLE_TIME); + ret =3D regmap_write(iadc->regmap, IADC_HW_SETTLE_DELAY, IADC_DEF_HW_SETT= LE_TIME); if (ret < 0) return ret; =20 - ret =3D iadc_write(iadc, IADC_FAST_AVG_CTL, IADC_DEF_AVG_SAMPLES); + ret =3D regmap_write(iadc->regmap, IADC_FAST_AVG_CTL, IADC_DEF_AVG_SAMPLE= S); if (ret < 0) return ret; =20 if (IADC_DEF_AVG_SAMPLES) - ret =3D iadc_write(iadc, IADC_FAST_AVG_EN, IADC_FAST_AVG_EN_SET); + ret =3D regmap_write(iadc->regmap, IADC_FAST_AVG_EN, IADC_FAST_AVG_EN_SE= T); else - ret =3D iadc_write(iadc, IADC_FAST_AVG_EN, 0); + ret =3D regmap_write(iadc->regmap, IADC_FAST_AVG_EN, 0); =20 if (ret < 0) return ret; @@ -239,19 +221,19 @@ static int iadc_configure(struct iadc_chip *iadc, int= channel) return ret; =20 /* Request conversion */ - return iadc_write(iadc, IADC_CONV_REQ, IADC_CONV_REQ_SET); + return regmap_write(iadc->regmap, IADC_CONV_REQ, IADC_CONV_REQ_SET); } =20 static int iadc_poll_wait_eoc(struct iadc_chip *iadc, unsigned int interva= l_us) { unsigned int count, retry; + u32 sta1; int ret; - u8 sta1; =20 retry =3D interval_us / IADC_CONV_TIME_MIN_US; =20 for (count =3D 0; count < retry; count++) { - ret =3D iadc_read(iadc, IADC_STATUS1, &sta1); + ret =3D regmap_read(iadc->regmap, IADC_STATUS1, &sta1); if (ret < 0) return ret; =20 @@ -267,11 +249,6 @@ static int iadc_poll_wait_eoc(struct iadc_chip *iadc, = unsigned int interval_us) return -ETIMEDOUT; } =20 -static int iadc_read_result(struct iadc_chip *iadc, u16 *data) -{ - return regmap_bulk_read(iadc->regmap, IADC_DATA, data, 2); -} - static int iadc_do_conversion(struct iadc_chip *iadc, int chan, u16 *data) { unsigned int wait; @@ -296,7 +273,7 @@ static int iadc_do_conversion(struct iadc_chip *iadc, i= nt chan, u16 *data) } =20 if (!ret) - ret =3D iadc_read_result(iadc, data); + ret =3D regmap_bulk_read(iadc->regmap, IADC_DATA, data, sizeof(*data)); exit: iadc_set_state(iadc, false); if (ret < 0) @@ -392,33 +369,33 @@ static int iadc_update_offset(struct iadc_chip *iadc) =20 static int iadc_version_check(struct iadc_chip *iadc) { - u8 val; + u32 val; int ret; =20 - ret =3D iadc_read(iadc, IADC_PERPH_TYPE, &val); + ret =3D regmap_read(iadc->regmap, IADC_PERPH_TYPE, &val); if (ret < 0) return ret; =20 if (val < IADC_PERPH_TYPE_ADC) { - dev_err(iadc->dev, "%d is not ADC\n", val); + dev_err(iadc->dev, "%u is not ADC\n", val); return -EINVAL; } =20 - ret =3D iadc_read(iadc, IADC_PERPH_SUBTYPE, &val); + ret =3D regmap_read(iadc->regmap, IADC_PERPH_SUBTYPE, &val); if (ret < 0) return ret; =20 if (val < IADC_PERPH_SUBTYPE_IADC) { - dev_err(iadc->dev, "%d is not IADC\n", val); + dev_err(iadc->dev, "%u is not IADC\n", val); return -EINVAL; } =20 - ret =3D iadc_read(iadc, IADC_REVISION2, &val); + ret =3D regmap_read(iadc->regmap, IADC_REVISION2, &val); if (ret < 0) return ret; =20 if (val < IADC_REVISION2_SUPPORTED_IADC) { - dev_err(iadc->dev, "revision %d not supported\n", val); + dev_err(iadc->dev, "revision %u not supported\n", val); return -EINVAL; } =20 @@ -428,7 +405,7 @@ static int iadc_version_check(struct iadc_chip *iadc) static int iadc_rsense_read(struct iadc_chip *iadc, struct device_node *no= de) { int ret, sign, int_sense; - u8 deviation; + u32 deviation; =20 ret =3D of_property_read_u32(node, "qcom,external-resistor-micro-ohms", &iadc->rsense[IADC_EXT_RSENSE]); @@ -440,7 +417,7 @@ static int iadc_rsense_read(struct iadc_chip *iadc, str= uct device_node *node) return -EINVAL; } =20 - ret =3D iadc_read(iadc, IADC_NOMINAL_RSENSE, &deviation); + ret =3D regmap_read(iadc->regmap, IADC_NOMINAL_RSENSE, &deviation); if (ret < 0) return ret; =20 --=20 2.55.0