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Mon, 09 Jun 2025 11:41:23 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:3c26:913e:81d:9d46]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a53244f04dsm10137865f8f.73.2025.06.09.11.41.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jun 2025 11:41:23 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Chris Brandt , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Andy Shevchenko , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar , Conor Dooley Subject: [PATCH v2 1/6] dt-bindings: i2c: renesas,riic: Move ref for i2c-controller.yaml to the end Date: Mon, 9 Jun 2025 19:41:09 +0100 Message-ID: <20250609184114.282732-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar In preparation for adding more validation checks, move the `$ref` for 'i2c-controller.yaml' to the end of the file. Also, relocate the conditional check for 'resets' into the 'allOf' block. Signed-off-by: Lad Prabhakar Acked-by: Conor Dooley Reviewed-by: Geert Uytterhoeven --- v1->v2: - Added Acked-by and Reviewed-by tags. --- .../devicetree/bindings/i2c/renesas,riic.yaml | 30 +++++++++---------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml index cc39511a49d6..bfcc400655dc 100644 --- a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml +++ b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml @@ -10,9 +10,6 @@ maintainers: - Chris Brandt - Wolfram Sang -allOf: - - $ref: /schemas/i2c/i2c-controller.yaml# - properties: compatible: oneOf: @@ -84,18 +81,21 @@ required: - '#address-cells' - '#size-cells' -if: - properties: - compatible: - contains: - enum: - - renesas,riic-r9a07g043 - - renesas,riic-r9a07g044 - - renesas,riic-r9a07g054 - - renesas,riic-r9a09g057 -then: - required: - - resets +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + + - if: + properties: + compatible: + contains: + enum: + - renesas,riic-r9a07g043 + - renesas,riic-r9a07g044 + - renesas,riic-r9a07g054 + - renesas,riic-r9a09g057 + then: + required: + - resets unevaluatedProperties: false From patchwork Mon Jun 9 18:41:10 2025 Content-Type: text/plain; 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Mon, 09 Jun 2025 11:41:24 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:3c26:913e:81d:9d46]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a53244f04dsm10137865f8f.73.2025.06.09.11.41.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jun 2025 11:41:24 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Chris Brandt , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Andy Shevchenko , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar , Conor Dooley Subject: [PATCH v2 2/6] dt-bindings: i2c: renesas,riic: Document RZ/T2H support Date: Mon, 9 Jun 2025 19:41:10 +0100 Message-ID: <20250609184114.282732-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Document support for the I2C Bus Interface (RIIC) found on the Renesas RZ/T2H (R9A09G077) SoC. The RIIC IP on this SoC is similar to that on the RZ/V2H(P) SoC but supports fewer interrupts, lacks FM+ support and does not require resets. Due to these differences, add a new compatible string `renesas,riic-r9a09g077` for the RZ/T2H SoC. Unlike earlier SoCs that use eight distinct interrupts, the RZ/T2H uses only four, including a combined error/event interrupt. Update the binding schema to reflect this interrupt layout and skip the `resets` property check, as it is not required on these SoCs. Signed-off-by: Lad Prabhakar Acked-by: Conor Dooley Reviewed-by: Wolfram Sang --- v1-> v2: - Listed the interrupts in the order as mentioned in the HW manual. - Renamed the interrupt names to match the HW manual. - Added Acked-by and Reviewed-by tags. --- .../devicetree/bindings/i2c/renesas,riic.yaml | 71 ++++++++++++++----- 1 file changed, 52 insertions(+), 19 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml index bfcc400655dc..412eaa28b077 100644 --- a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml +++ b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml @@ -29,32 +29,46 @@ properties: - renesas,riic-r9a09g056 # RZ/V2N - const: renesas,riic-r9a09g057 # RZ/V2H(P) - - const: renesas,riic-r9a09g057 # RZ/V2H(P) + - enum: + - renesas,riic-r9a09g057 # RZ/V2H(P) + - renesas,riic-r9a09g077 # RZ/T2H reg: maxItems: 1 interrupts: - items: - - description: Transmit End Interrupt - - description: Receive Data Full Interrupt - - description: Transmit Data Empty Interrupt - - description: Stop Condition Detection Interrupt - - description: Start Condition Detection Interrupt - - description: NACK Reception Interrupt - - description: Arbitration-Lost Interrupt - - description: Timeout Interrupt + oneOf: + - items: + - description: Transmit End Interrupt + - description: Receive Data Full Interrupt + - description: Transmit Data Empty Interrupt + - description: Stop Condition Detection Interrupt + - description: Start Condition Detection Interrupt + - description: NACK Reception Interrupt + - description: Arbitration-Lost Interrupt + - description: Timeout Interrupt + - items: + - description: Transmit Error Or Event Generation + - description: Receive Data Full Interrupt + - description: Transmit End Interrupt + - description: Transmit Data Empty Interrupt interrupt-names: - items: - - const: tei - - const: ri - - const: ti - - const: spi - - const: sti - - const: naki - - const: ali - - const: tmoi + oneOf: + - items: + - const: tei + - const: ri + - const: ti + - const: spi + - const: sti + - const: naki + - const: ali + - const: tmoi + - items: + - const: eei + - const: rxi + - const: txi + - const: tei clock-frequency: description: @@ -84,6 +98,25 @@ required: allOf: - $ref: /schemas/i2c/i2c-controller.yaml# + - if: + properties: + compatible: + contains: + const: renesas,riic-r9a09g077 + then: + properties: + interrupts: + maxItems: 4 + interrupt-names: + maxItems: 4 + resets: false + else: + properties: + interrupts: + minItems: 8 + interrupt-names: + minItems: 8 + - if: properties: compatible: From patchwork Mon Jun 9 18:41:11 2025 Content-Type: text/plain; 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Mon, 09 Jun 2025 11:41:26 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:3c26:913e:81d:9d46]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a53244f04dsm10137865f8f.73.2025.06.09.11.41.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jun 2025 11:41:25 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Chris Brandt , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Andy Shevchenko , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar , Conor Dooley Subject: [PATCH v2 3/6] dt-bindings: i2c: renesas,riic: Document RZ/N2H support Date: Mon, 9 Jun 2025 19:41:11 +0100 Message-ID: <20250609184114.282732-4-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Document support for the I2C Bus Interface (RIIC) found on the Renesas RZ/N2H (R9A09G087) SoC. The RIIC IP on this SoC is identical to that on the RZ/T2H SoC so `renesas,riic-r9a09g077` will be used as a fallback compatible. Signed-off-by: Lad Prabhakar Acked-by: Conor Dooley Reviewed-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven --- v1->v2: - Added Acked-by and Reviewed-by tags. --- Documentation/devicetree/bindings/i2c/renesas,riic.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml index 412eaa28b077..6609007e2cd8 100644 --- a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml +++ b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml @@ -33,6 +33,10 @@ properties: - renesas,riic-r9a09g057 # RZ/V2H(P) - renesas,riic-r9a09g077 # RZ/T2H + - items: + - const: renesas,riic-r9a09g087 # RZ/N2H + - const: renesas,riic-r9a09g077 # RZ/T2H + reg: maxItems: 1 From patchwork Mon Jun 9 18:41:12 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lad, Prabhakar" X-Patchwork-Id: 895402 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 52752220F24; 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Mon, 09 Jun 2025 11:41:27 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:3c26:913e:81d:9d46]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a53244f04dsm10137865f8f.73.2025.06.09.11.41.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jun 2025 11:41:26 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Chris Brandt , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Andy Shevchenko , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH v2 4/6] i2c: riic: Pass IRQ desc array as part of OF data Date: Mon, 9 Jun 2025 19:41:12 +0100 Message-ID: <20250609184114.282732-5-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar In preparation for adding support for Renesas RZ/T2H and RZ/N2H SoCs, which feature a combined error interrupt instead of individual error interrupts per condition, update the driver to support configurable IRQ layouts via OF data. Introduce a new `irqs` field and `num_irqs` count in `riic_of_data` to allow future SoCs to provide a custom IRQ layout. This patch is a non-functional change for existing SoCs and maintains compatibility with the current `riic_irqs` array. Signed-off-by: Lad Prabhakar Reviewed-by: Wolfram Sang Tested-by: Wolfram Sang # on RZ/A1 Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Reviewed-by: Andy Shevchenko --- v1->v2: - Initialized the members of `riic_of_data` in the order they are declared in the struct. - Added Reviewed-by and Tested-by tags. --- drivers/i2c/busses/i2c-riic.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index 23375f7fe3ad..ecd1c78eecfd 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -102,6 +102,8 @@ enum riic_reg_list { struct riic_of_data { const u8 *regs; + const struct riic_irq_desc *irqs; + u8 num_irqs; bool fast_mode_plus; }; @@ -520,21 +522,23 @@ static int riic_i2c_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(riic->rstc), "failed to acquire deasserted reset\n"); - for (i = 0; i < ARRAY_SIZE(riic_irqs); i++) { + riic->info = of_device_get_match_data(dev); + + for (i = 0; i < riic->info->num_irqs; i++) { + const struct riic_irq_desc *irq_desc; int irq; - irq = platform_get_irq(pdev, riic_irqs[i].res_num); + irq_desc = &riic->info->irqs[i]; + irq = platform_get_irq(pdev, irq_desc->res_num); if (irq < 0) return irq; - ret = devm_request_irq(dev, irq, riic_irqs[i].isr, - 0, riic_irqs[i].name, riic); + ret = devm_request_irq(dev, irq, irq_desc->isr, 0, irq_desc->name, riic); if (ret) return dev_err_probe(dev, ret, "failed to request irq %s\n", - riic_irqs[i].name); + irq_desc->name); } - riic->info = of_device_get_match_data(dev); adap = &riic->adapter; i2c_set_adapdata(adap, riic); @@ -606,11 +610,15 @@ static const u8 riic_rz_a_regs[RIIC_REG_END] = { static const struct riic_of_data riic_rz_a_info = { .regs = riic_rz_a_regs, + .irqs = riic_irqs, + .num_irqs = ARRAY_SIZE(riic_irqs), .fast_mode_plus = true, }; static const struct riic_of_data riic_rz_a1h_info = { .regs = riic_rz_a_regs, + .irqs = riic_irqs, + .num_irqs = ARRAY_SIZE(riic_irqs), }; static const u8 riic_rz_v2h_regs[RIIC_REG_END] = { @@ -630,6 +638,8 @@ static const u8 riic_rz_v2h_regs[RIIC_REG_END] = { static const struct riic_of_data riic_rz_v2h_info = { .regs = riic_rz_v2h_regs, + .irqs = riic_irqs, + .num_irqs = ARRAY_SIZE(riic_irqs), .fast_mode_plus = true, }; From patchwork Mon Jun 9 18:41:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lad, Prabhakar" X-Patchwork-Id: 894938 Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 14C5E220F2B; Mon, 9 Jun 2025 18:41:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749494491; cv=none; b=dEKv6VKs46IiSF5x2DW5qBq0vROwKMzGwg6gr5A+qcMnYH9JH4gbyTWiJVEnX+5DgZF3BaBne7vlkp8jrXK1lQh5rOJOySLyzr78Phtr6sXjJL9eoENPeH3H231pJewoVQ1eZ1/MWo7y0gioN2wIQLqwWBSDPkpdgl4ymTEw8MQ= ARC-Message-Signature: i=1; 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Mon, 09 Jun 2025 11:41:28 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:3c26:913e:81d:9d46]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a53244f04dsm10137865f8f.73.2025.06.09.11.41.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jun 2025 11:41:27 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Chris Brandt , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Andy Shevchenko , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH v2 5/6] i2c: riic: Move generic compatible string to end of array Date: Mon, 9 Jun 2025 19:41:13 +0100 Message-ID: <20250609184114.282732-6-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Reorder the entry in `riic_i2c_dt_ids` to place the generic compatible string `renesas,riic-rz` at the end of the array, following the convention used in other Renesas drivers. Also, drop the unnecessary comma after the sentinel entry, as it is not needed. Signed-off-by: Lad Prabhakar Reviewed-by: Wolfram Sang Tested-by: Wolfram Sang # on RZ/A1 Reviewed-by: Geert Uytterhoeven Reviewed-by: Andy Shevchenko --- v1-> v2: - Added Reviewed-by and Tested-by tags --- drivers/i2c/busses/i2c-riic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index ecd1c78eecfd..d0b975e45595 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -693,10 +693,10 @@ static const struct dev_pm_ops riic_i2c_pm_ops = { }; static const struct of_device_id riic_i2c_dt_ids[] = { - { .compatible = "renesas,riic-rz", .data = &riic_rz_a_info }, { .compatible = "renesas,riic-r7s72100", .data = &riic_rz_a1h_info, }, { .compatible = "renesas,riic-r9a09g057", .data = &riic_rz_v2h_info }, - { /* Sentinel */ }, + { .compatible = "renesas,riic-rz", .data = &riic_rz_a_info }, + { /* Sentinel */ } }; static struct platform_driver riic_i2c_driver = { From patchwork Mon Jun 9 18:41:14 2025 Content-Type: text/plain; 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Mon, 09 Jun 2025 11:41:29 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:3c26:913e:81d:9d46]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a53244f04dsm10137865f8f.73.2025.06.09.11.41.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jun 2025 11:41:28 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Chris Brandt , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Andy Shevchenko , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH v2 6/6] i2c: riic: Add support for RZ/T2H SoC Date: Mon, 9 Jun 2025 19:41:14 +0100 Message-ID: <20250609184114.282732-7-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250609184114.282732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Add support for the Renesas RZ/T2H (R9A09G077) SoC, which features a different interrupt layout for the RIIC controller. Unlike other SoCs with individual error interrupts, RZ/T2H uses a combined error interrupt (EEI). Introduce a new IRQ descriptor table for RZ/T2H, along with a custom ISR (`riic_eei_isr`) to handle STOP and NACK detection from the shared interrupt. Signed-off-by: Lad Prabhakar Reviewed-by: Wolfram Sang Tested-by: Wolfram Sang # on RZ/A1 Reviewed-by: Geert Uytterhoeven Reviewed-by: Andy Shevchenko --- v1->v2: - Updated the riic_rzt2h_irqs array to match the order of interrupts as mentioned in the DT binding. - Updated the interrupt names in the riic_rzt2h_irqs array to match the HW manual. - Added Tested-by and Reviewed-by tags. --- drivers/i2c/busses/i2c-riic.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index d0b975e45595..9c164a4b9bb9 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -79,6 +79,7 @@ #define ICIER_SPIE BIT(3) #define ICSR2_NACKF BIT(4) +#define ICSR2_STOP BIT(3) #define ICBR_RESERVED GENMASK(7, 5) /* Should be 1 on writes */ @@ -326,6 +327,19 @@ static irqreturn_t riic_stop_isr(int irq, void *data) return IRQ_HANDLED; } +static irqreturn_t riic_eei_isr(int irq, void *data) +{ + u8 icsr2 = riic_readb(data, RIIC_ICSR2); + + if (icsr2 & ICSR2_NACKF) + return riic_tend_isr(irq, data); + + if (icsr2 & ICSR2_STOP) + return riic_stop_isr(irq, data); + + return IRQ_NONE; +} + static u32 riic_func(struct i2c_adapter *adap) { return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; @@ -497,6 +511,13 @@ static const struct riic_irq_desc riic_irqs[] = { { .res_num = 5, .isr = riic_tend_isr, .name = "riic-nack" }, }; +static const struct riic_irq_desc riic_rzt2h_irqs[] = { + { .res_num = 0, .isr = riic_eei_isr, .name = "riic-eei" }, + { .res_num = 1, .isr = riic_rdrf_isr, .name = "riic-rxi" }, + { .res_num = 2, .isr = riic_tdre_isr, .name = "riic-txi" }, + { .res_num = 3, .isr = riic_tend_isr, .name = "riic-tei" }, +}; + static int riic_i2c_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -643,6 +664,12 @@ static const struct riic_of_data riic_rz_v2h_info = { .fast_mode_plus = true, }; +static const struct riic_of_data riic_rz_t2h_info = { + .regs = riic_rz_v2h_regs, + .irqs = riic_rzt2h_irqs, + .num_irqs = ARRAY_SIZE(riic_rzt2h_irqs), +}; + static int riic_i2c_suspend(struct device *dev) { struct riic_dev *riic = dev_get_drvdata(dev); @@ -695,6 +722,7 @@ static const struct dev_pm_ops riic_i2c_pm_ops = { static const struct of_device_id riic_i2c_dt_ids[] = { { .compatible = "renesas,riic-r7s72100", .data = &riic_rz_a1h_info, }, { .compatible = "renesas,riic-r9a09g057", .data = &riic_rz_v2h_info }, + { .compatible = "renesas,riic-r9a09g077", .data = &riic_rz_t2h_info }, { .compatible = "renesas,riic-rz", .data = &riic_rz_a_info }, { /* Sentinel */ } };