From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794363552; b=O93ayAfz+CrmJuWsKXh/mHRAHxIN0vpsKRwXGcChCVkc6aVQFTFhcSHZNYi8Zs4IcBZj JMdNISF/pMYhfzzgznbfOdMIEjl8ZVU3IYq0qr6GqmWhyg5GrVJH9AXcyLc25Eo/x4LhM 5JW3XuWhq/EJqVWyTnKM67sLuKe5TUyCN7O9+cgTWyBIesQFbRt7SuCxnOyN24aF4MtZE /0AR7HlkX4BM3OyL/I0uUAwdKm8GNGyoCW5fwgjjgyRPh/P/71fqAHRGK1k9WS3HnjGw3 cqCM+wahtK3RqHVKWx8aCACHe0kBXCGxuz0cxfPWGlAj3OPpjRcusGQQckab0KPiq3A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794363552; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=2uVxbiotD9un69M9tCD5Fr0I4KpEpUc1LUsIKm9MmL8=; b=fFjgvyd8uYgZ07Mgc/2Z956RM2pPczRiC7ihjuM3x19Ri/W4/UOdCDxPhA0K9mM4RDL5 V2b2vSdcbSqt+oih0QF5pq8oTk1AM6HQSdX+UbCETGwpiHb/5knVZUm4SWVoqTFiD8OOW HzDmhj8gVC62gqkakat2Y38Tqj+hECAZ3/GZHLFOltVPFLFyYtRf+XvLyFo01pfWDmqM2 lBis7L+2PNWX5T35N/WH+pUdA4twwBcVoX/eyRurFhZN0c+7tn+uRgTyCDbyS/rQEMMj/ n7scY6WoMqD2ahSlDRaj+76vfjNNdGrMLz80t1zdddG1TWdWJMQmggS8CxYSNDcNF8Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=YzUTxT3B; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 20F37606A320 for ; Wed, 11 Nov 2026 02:19:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=YzUTxT3B Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0755A1F0089F; Wed, 11 Nov 2026 02:19:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794363551; bh=2uVxbiotD9un69M9tCD5Fr0I4KpEpUc1LUsIKm9MmL8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=YzUTxT3BeBb5j8yaFR0TXjCZpeG5A3yKgYZjWXcxldW96sVNMdxCBeOvjqKjRdhCr +YOUhn3YlFEcNqpmu1KqM7PT68Wfpz+5pTH8jxMG9hDmc61WltUBFQ5poUWNL/7MbA 8H9P8eEu4FbypfsOrz9R9JqF7lmJ1Yr5XSK5ixaJV331t2R+eWe8VpyCNUi1S3PpYc 3tlDMZf+EqHMgBk6Dx+GnnBfSxWAxBc6GMT45L8mq/O3hURB6v81QnqSuCU0nKGi+f Qb8HG0f3wQetippRLorWn5gPCJ/to2B94vhcCef7nPMnG7nWs7WFzHo254o1s8Eeai MyDCITJET+j6Q== From: Sasha Levin To: stable@vger.kernel.org Cc: Cristian Ciocaltea , Vincent Legoll , Heiko Stuebner , Srinivas Kandagatla , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH 5.15.y 1/3] nvmem: rockchip-otp: Add clks and reg_read to rockchip_data Date: Tue, 10 Nov 2026 21:19:07 -0500 Message-ID: <20261111021904.642613-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261107060352-failed-5.15-9fc6a1592d84@kernel.org> References: <20261107060352-failed-5.15-9fc6a1592d84@kernel.org> X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Cristian Ciocaltea [ Upstream commit 8dc61364164e79e44c07fa2ac0a7b6939f00d5db ] In preparation to support new Rockchip OTP memory devices with different clock configurations and register layout, extend rockchip_data struct with the related members: clks, num_clks, reg_read. Additionally, to avoid managing redundant driver data, drop num_clks member from rockchip_otp struct and update all references to point to the equivalent member in rockchip_data. Signed-off-by: Cristian Ciocaltea Tested-by: Vincent Legoll Reviewed-by: Heiko Stuebner Signed-off-by: Srinivas Kandagatla Message-ID: <20230611140330.154222-10-srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman Stable-dep-of: 9fc6a1592d84 ("nvmem: rockchip-otp: Serialize reads") Signed-off-by: Sasha Levin --- drivers/nvmem/rockchip-otp.c | 79 ++++++++++++++++++++++-------------- 1 file changed, 49 insertions(+), 30 deletions(-) diff --git a/drivers/nvmem/rockchip-otp.c b/drivers/nvmem/rockchip-otp.c index 9f53bcce2f877..b5a84b379da40 100644 --- a/drivers/nvmem/rockchip-otp.c +++ b/drivers/nvmem/rockchip-otp.c @@ -54,21 +54,19 @@ #define OTPC_TIMEOUT 10000 +struct rockchip_data { + int size; + const char * const *clks; + int num_clks; + nvmem_reg_read_t reg_read; +}; + struct rockchip_otp { struct device *dev; void __iomem *base; - struct clk_bulk_data *clks; - int num_clks; + struct clk_bulk_data *clks; struct reset_control *rst; -}; - -/* list of required clocks */ -static const char * const rockchip_otp_clocks[] = { - "otp", "apb_pclk", "phy", -}; - -struct rockchip_data { - int size; + const struct rockchip_data *data; }; static int rockchip_otp_reset(struct rockchip_otp *otp) @@ -132,29 +130,23 @@ static int rockchip_otp_ecc_enable(struct rockchip_otp *otp, bool enable) return ret; } -static int rockchip_otp_read(void *context, unsigned int offset, - void *val, size_t bytes) +static int px30_otp_read(void *context, unsigned int offset, + void *val, size_t bytes) { struct rockchip_otp *otp = context; u8 *buf = val; - int ret = 0; - - ret = clk_bulk_prepare_enable(otp->num_clks, otp->clks); - if (ret < 0) { - dev_err(otp->dev, "failed to prepare/enable clks\n"); - return ret; - } + int ret; ret = rockchip_otp_reset(otp); if (ret) { dev_err(otp->dev, "failed to reset otp phy\n"); - goto disable_clks; + return ret; } ret = rockchip_otp_ecc_enable(otp, false); if (ret < 0) { dev_err(otp->dev, "rockchip_otp_ecc_enable err\n"); - goto disable_clks; + return ret; } writel(OTPC_USE_USER | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); @@ -174,8 +166,28 @@ static int rockchip_otp_read(void *context, unsigned int offset, read_end: writel(0x0 | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); -disable_clks: - clk_bulk_disable_unprepare(otp->num_clks, otp->clks); + + return ret; +} + +static int rockchip_otp_read(void *context, unsigned int offset, + void *val, size_t bytes) +{ + struct rockchip_otp *otp = context; + int ret; + + if (!otp->data || !otp->data->reg_read) + return -EINVAL; + + ret = clk_bulk_prepare_enable(otp->data->num_clks, otp->clks); + if (ret < 0) { + dev_err(otp->dev, "failed to prepare/enable clks\n"); + return ret; + } + + ret = otp->data->reg_read(context, offset, val, bytes); + + clk_bulk_disable_unprepare(otp->data->num_clks, otp->clks); return ret; } @@ -189,8 +201,15 @@ static struct nvmem_config otp_config = { .reg_read = rockchip_otp_read, }; +static const char * const px30_otp_clocks[] = { + "otp", "apb_pclk", "phy", +}; + static const struct rockchip_data px30_data = { .size = 0x40, + .clks = px30_otp_clocks, + .num_clks = ARRAY_SIZE(px30_otp_clocks), + .reg_read = px30_otp_read, }; static const struct of_device_id rockchip_otp_match[] = { @@ -225,21 +244,21 @@ static int rockchip_otp_probe(struct platform_device *pdev) if (!otp) return -ENOMEM; + otp->data = data; otp->dev = dev; otp->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(otp->base)) return PTR_ERR(otp->base); - otp->num_clks = ARRAY_SIZE(rockchip_otp_clocks); - otp->clks = devm_kcalloc(dev, otp->num_clks, - sizeof(*otp->clks), GFP_KERNEL); + otp->clks = devm_kcalloc(dev, data->num_clks, sizeof(*otp->clks), + GFP_KERNEL); if (!otp->clks) return -ENOMEM; - for (i = 0; i < otp->num_clks; ++i) - otp->clks[i].id = rockchip_otp_clocks[i]; + for (i = 0; i < data->num_clks; ++i) + otp->clks[i].id = data->clks[i]; - ret = devm_clk_bulk_get(dev, otp->num_clks, otp->clks); + ret = devm_clk_bulk_get(dev, data->num_clks, otp->clks); if (ret) return ret; -- 2.53.0