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[184.96.151.165]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4b971246d9csm252885b6e.7.2026.09.03.13.09.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 13:09:53 -0700 (PDT) From: James Hilliard Date: Thu, 03 Sep 2026 14:09:40 -0600 Subject: [PATCH v9 1/4] dt-bindings: mfd: x-powers: Add AC200 Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20260903-submit-ac200-mfd-v9-1-6b7ed278989c@gmail.com> References: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> In-Reply-To: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> To: Lee Jones , Arnd Bergmann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , James Hilliard Cc: Andrew Lunn , "Jagielski, Jedrzej" , Andre Przywara , Chen-Yu Tsai , Jernej Skrabec , linux-sunxi@lists.linux.dev, mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.15.2 X-Rspamd-Server: rspamd-worker-8404 X-Spamd-Result: default: False [4.34 / 15.00]; RBL_SENDERSCORE(2.00)[172.105.105.114:from]; SUSPICIOUS_RECIPS(1.50)[]; DMARC_POLICY_SOFTFAIL(1.00)[gmail.com : SPF not aligned (relaxed), No valid DKIM,none]; MAILLIST(-0.15)[generic]; MIME_GOOD(-0.10)[text/plain]; BAD_REP_POLICIES(0.10)[]; HAS_LIST_UNSUB(-0.01)[]; TAGGED_RCPT(0.00)[dt]; ARC_ALLOW(0.00)[subspace.kernel.org:s=arc-20240116:i=1]; PRECEDENCE_BULK(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[qualcomm.com:email,tor.lore.kernel.org:rdns,tor.lore.kernel.org:helo,linux.dev:email,devicetree.org:url,0.0.0.10:email]; RCPT_COUNT_TWELVE(0.00)[16]; FORGED_SENDER_MAILLIST(0.00)[]; FREEMAIL_CC(0.00)[lunn.ch,intel.com,arm.com,kernel.org,gmail.com,lists.linux.dev,vger.kernel.org,oss.qualcomm.com]; FROM_HAS_DN(0.00)[]; RCVD_COUNT_FIVE(0.00)[6]; ASN(0.00)[asn:63949, ipnet:172.105.96.0/20, country:SG]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(0.00)[+ip4:172.105.105.114]; TO_DN_SOME(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[209.85.167.178:received,100.90.174.1:received]; FROM_NEQ_ENVFROM(0.00)[jameshilliard1@gmail.com,linux-sunxi@lists.linux.dev]; FREEMAIL_TO(0.00)[kernel.org,arndb.de,gmail.com]; MIME_TRACE(0.00)[0:+]; TAGGED_FROM(0.00)[bounces-25548-noreply=patchwork.local]; RECEIVED_SPAMHAUS_PBL(0.00)[184.96.151.165:received]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[172.105.105.114:from] X-Rspamd-Queue-Id: 523781C1945 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= The AC200 is an I2C-controlled mixed-signal companion IC containing audio, video, RTC and Fast Ethernet PHY functions. Describe the parent device and its shared input clock. The Ethernet PHY is represented by a PHY package on its MDIO bus, with a phandle back to this device for access to the package control registers, so it does not require an MFD child node. Function-specific supplies belong to their consumer bindings rather than the shared parent. The input clock must run at 24 or 27 MHz when the Ethernet PHY is used, matching the rates encoded by its documented clock selector. Reviewed-by: Krzysztof Kozlowski Signed-off-by: James Hilliard --- .../devicetree/bindings/mfd/x-powers,ac200.yaml | 50 ++++++++++++++++++++++ MAINTAINERS | 7 +++ 2 files changed, 57 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml b/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml new file mode 100644 index 000000000000..ca7a910b2c73 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/x-powers,ac200.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: X-Powers AC200 mixed-signal IC + +maintainers: + - James Hilliard + - Jernej Skrabec + +description: + The AC200 is a mixed-signal companion IC containing audio, video, RTC and + Fast Ethernet PHY functions. Its control registers are accessed over I2C. + +properties: + compatible: + const: x-powers,ac200 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + description: + AC200 input clock. When using the Ethernet PHY, its configured rate must + be 24 or 27 MHz, matching the rates encoded by the documented EPHY clock + selector. + +required: + - compatible + - reg + - clocks + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + mixed-signal@10 { + compatible = "x-powers,ac200"; + reg = <0x10>; + clocks = <&pwm 5>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 3a19da74d00c..419340093c9b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -29504,6 +29504,13 @@ F: drivers/net/wwan/ F: include/linux/wwan.h F: include/uapi/linux/wwan.h +X-POWERS AC200 DRIVERS +M: Jernej Skrabec +M: James Hilliard +L: linux-sunxi@lists.linux.dev +S: Maintained +F: Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml + X-POWERS AXP288 PMIC DRIVERS M: Hans de Goede S: Maintained From patchwork Thu Sep 3 20:09:41 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Hilliard X-Patchwork-Id: 3166 Return-Path: X-Original-To: noreply@patchwork.local Delivered-To: noreply@patchwork.local Received: from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10]) by mxe881.netcup.net (Postfix) with ESMTPS id 1AB651C0C01 for ; 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[184.96.151.165]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4b971246d9csm252885b6e.7.2026.09.03.13.09.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 13:09:54 -0700 (PDT) From: James Hilliard Date: Thu, 03 Sep 2026 14:09:41 -0600 Subject: [PATCH v9 2/4] mfd: ac200: Add X-Powers AC200 support Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20260903-submit-ac200-mfd-v9-2-6b7ed278989c@gmail.com> References: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> In-Reply-To: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> To: Lee Jones , Arnd Bergmann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , James Hilliard Cc: Andrew Lunn , "Jagielski, Jedrzej" , Andre Przywara , Chen-Yu Tsai , Jernej Skrabec , linux-sunxi@lists.linux.dev, mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.15.2 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= The X-Powers AC200 is a mixed-signal companion IC with a paged register map accessed over I2C. Enable and rate-lock the shared input clock, wait 40 ms before the first register access, initialize the paged regmap and deassert the common reset. Set only the deassert bit instead of forcing a reset cycle, so state established by firmware or independently powered functions remains intact. Leave the common reset deasserted during driver removal and system shutdown; function drivers own their block resets. The Ethernet PHY is enumerated on its MDIO bus rather than as an MFD child. It follows the x-powers,ac200 phandle and uses this regmap for ancillary package-control access. The audio codec and TV encoder are added as MFD children by subsequent patches. Cache only the common page selector. Individual functions can reset independently and invalidate their other registers, so leave all functional registers volatile. Signed-off-by: James Hilliard --- MAINTAINERS | 1 + drivers/mfd/Kconfig | 12 ++++++ drivers/mfd/Makefile | 1 + drivers/mfd/ac200.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 127 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 419340093c9b..1d03b0060bda 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -29510,6 +29510,7 @@ M: James Hilliard L: linux-sunxi@lists.linux.dev S: Maintained F: Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml +F: drivers/mfd/ac200.c X-POWERS AXP288 PMIC DRIVERS M: Hans de Goede diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 857ca3bb0d5b..6dea35c8c18e 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -205,6 +205,18 @@ config MFD_AC100 This driver include only the core APIs. You have to select individual components like codecs or RTC under the corresponding menus. +config MFD_AC200 + tristate "X-Powers AC200" + depends on COMMON_CLK + depends on I2C + depends on OF + select REGMAP_I2C + help + Support for the X-Powers AC200 mixed-signal companion IC. The AC200 + contains audio, video, RTC and Fast Ethernet PHY functions and is + co-packaged with some Allwinner H6 and H616 SoCs. This driver provides + the shared register access used by the individual function drivers. + config MFD_AXP20X tristate select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 72d3944b0ad8..f8101d2a9ce9 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -150,6 +150,7 @@ obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o obj-$(CONFIG_MFD_AC100) += ac100.o +obj-$(CONFIG_MFD_AC200) += ac200.o obj-$(CONFIG_MFD_AXP20X) += axp20x.o obj-$(CONFIG_MFD_AXP20X_I2C) += axp20x-i2c.o obj-$(CONFIG_MFD_AXP20X_RSB) += axp20x-rsb.o diff --git a/drivers/mfd/ac200.c b/drivers/mfd/ac200.c new file mode 100644 index 000000000000..94aa13deb0f8 --- /dev/null +++ b/drivers/mfd/ac200.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * MFD core driver for the X-Powers AC200 + * + * Copyright (C) 2019 Jernej Skrabec + * Copyright (C) 2026 James Hilliard + */ + +#include +#include +#include +#include +#include + +#define AC200_SYS_CONTROL_REG 0x0002 +#define AC200_SYS_CONTROL_CHIP_RESET_DEASSERT BIT(0) + +/* Interface register accessible from every register page. */ +#define AC200_TWI_REG_ADDR_H 0x00fe +#define AC200_MAX_REG 0xa1f2 + +static const struct regmap_range_cfg ac200_range_cfg[] = { + { + .range_max = AC200_MAX_REG, + .selector_reg = AC200_TWI_REG_ADDR_H, + .selector_mask = 0xff, + .window_len = 256, + }, +}; + +/* + * Each AC200 sub-block can reset independently, invalidating its register + * contents without regmap's knowledge. Cache only the common page selector; + * this avoids a selector read-modify-write for every access on the same page + * without ever returning stale functional-register values. + */ +static bool ac200_volatile_reg(struct device *dev, unsigned int reg) +{ + return reg != AC200_TWI_REG_ADDR_H; +} + +static const struct regmap_config ac200_regmap_config = { + .name = "ac200", + .reg_bits = 8, + .reg_stride = 2, + .val_bits = 16, + .ranges = ac200_range_cfg, + .num_ranges = ARRAY_SIZE(ac200_range_cfg), + .max_register = AC200_MAX_REG, + .volatile_reg = ac200_volatile_reg, + .cache_type = REGCACHE_MAPLE, +}; + +static int ac200_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct regmap *regmap; + struct clk *clk; + int ret; + + clk = devm_clk_get_enabled(dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), + "failed to enable input clock\n"); + + ret = devm_clk_rate_exclusive_get(dev, clk); + if (ret) + return dev_err_probe(dev, ret, "failed to lock clock rate\n"); + + regmap = devm_regmap_init_i2c(client, &ac200_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), + "failed to initialize regmap\n"); + + /* + * No minimum delay is documented. Match the vendor driver's 40 ms delay + * before its first AC200 register access after enabling the input clock. + */ + msleep(40); + + ret = regmap_set_bits(regmap, AC200_SYS_CONTROL_REG, + AC200_SYS_CONTROL_CHIP_RESET_DEASSERT); + if (ret) + return ret; + + return 0; +} + +static const struct of_device_id ac200_of_match[] = { + { .compatible = "x-powers,ac200" }, + { } +}; +MODULE_DEVICE_TABLE(of, ac200_of_match); + +static const struct i2c_device_id ac200_i2c_ids[] = { + { .name = "ac200" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ac200_i2c_ids); + +static struct i2c_driver ac200_driver = { + .driver = { + .name = "ac200", + .of_match_table = ac200_of_match, + }, + .probe = ac200_probe, + .id_table = ac200_i2c_ids, +}; +module_i2c_driver(ac200_driver); + +MODULE_AUTHOR("James Hilliard "); +MODULE_DESCRIPTION("X-Powers AC200 MFD core driver"); +MODULE_LICENSE("GPL"); From patchwork Thu Sep 3 20:09:42 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Hilliard X-Patchwork-Id: 3167 Return-Path: X-Original-To: noreply@patchwork.local Delivered-To: noreply@patchwork.local Received: from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10]) by mxe881.netcup.net (Postfix) with ESMTPS id C7CD01C15F3 for ; 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[184.96.151.165]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4b971246d9csm252885b6e.7.2026.09.03.13.09.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 13:09:55 -0700 (PDT) From: James Hilliard Date: Thu, 03 Sep 2026 14:09:42 -0600 Subject: [PATCH v9 3/4] dt-bindings: mfd: x-powers: Describe AC200 functions Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20260903-submit-ac200-mfd-v9-3-6b7ed278989c@gmail.com> References: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> In-Reply-To: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> To: Lee Jones , Arnd Bergmann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , James Hilliard Cc: Andrew Lunn , "Jagielski, Jedrzej" , Andre Przywara , Chen-Yu Tsai , Jernej Skrabec , linux-sunxi@lists.linux.dev, mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.15.2 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= From: Jernej Skrabec Describe the AC200 audio codec and TV encoder as child nodes of the shared I2C register provider. Keep their analog supplies on the function consumers and describe the TV encoder display graph and optional bandgap calibration cell. Add the shared interrupt-controller properties and interrupt numbers needed by the TV encoder. The Ethernet PHY remains represented on its primary MDIO bus and is therefore not an MFD child. Signed-off-by: Jernej Skrabec Signed-off-by: James Hilliard --- .../devicetree/bindings/mfd/x-powers,ac200.yaml | 136 +++++++++++++++++++++ MAINTAINERS | 1 + include/dt-bindings/mfd/x-powers,ac200.h | 13 ++ 3 files changed, 150 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml b/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml index ca7a910b2c73..935dc07138cb 100644 --- a/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml +++ b/Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml @@ -28,15 +28,114 @@ properties: be 24 or 27 MHz, matching the rates encoded by the documented EPHY clock selector. + interrupts: + maxItems: 1 + description: + The shared open-drain INTB output for the TV encoder, Ethernet PHY and + RTC interrupts. + + interrupt-controller: true + + '#interrupt-cells': + const: 1 + description: + The interrupt number, as defined in + include/dt-bindings/mfd/x-powers,ac200.h. + + codec: + type: object + $ref: /schemas/sound/dai-common.yaml# + unevaluatedProperties: false + + properties: + compatible: + const: x-powers,ac200-codec + + '#sound-dai-cells': + const: 0 + + ac-ldoin-supply: + description: The 3.3 V supply for the audio codec LDO input. + + required: + - compatible + - '#sound-dai-cells' + - ac-ldoin-supply + + tv-encoder: + type: object + additionalProperties: false + + properties: + compatible: + const: x-powers,ac200-tve + + interrupts: + maxItems: 1 + description: Cable detection interrupt. + + tv-vcc-supply: + description: The 3.3 V supply for the composite-video DAC. + + nvmem-cells: + maxItems: 1 + + nvmem-cell-names: + items: + - const: bandgap + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Input from the display pipeline, carrying CCIR656. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: Output to the composite-video connector. + + required: + - port@0 + - port@1 + + required: + - compatible + - interrupts + - tv-vcc-supply + - ports + + dependencies: + nvmem-cells: [ nvmem-cell-names ] + nvmem-cell-names: [ nvmem-cells ] + required: - compatible - reg - clocks +allOf: + - if: + required: + - tv-encoder + then: + required: + - interrupts + - interrupt-controller + - '#interrupt-cells' + +dependencies: + interrupt-controller: [ '#interrupt-cells', interrupts ] + '#interrupt-cells': [ interrupt-controller ] + additionalProperties: false examples: - | + #include + #include + i2c { #address-cells = <1>; #size-cells = <0>; @@ -45,6 +144,43 @@ examples: compatible = "x-powers,ac200"; reg = <0x10>; clocks = <&pwm 5>; + interrupt-parent = <&pio>; + interrupts = <1 20 IRQ_TYPE_LEVEL_LOW>; + interrupt-controller; + #interrupt-cells = <1>; + + codec { + compatible = "x-powers,ac200-codec"; + #sound-dai-cells = <0>; + ac-ldoin-supply = <®_aldo2>; + }; + + tv-encoder { + compatible = "x-powers,ac200-tve"; + interrupts = ; + tv-vcc-supply = <®_aldo2>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + tve_in: endpoint { + remote-endpoint = <&tcon_out_tve>; + }; + }; + + port@1 { + reg = <1>; + + tve_out: endpoint { + remote-endpoint = <&composite_in>; + }; + }; + }; + }; }; }; ... diff --git a/MAINTAINERS b/MAINTAINERS index 1d03b0060bda..8a48f6a1e593 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -29511,6 +29511,7 @@ L: linux-sunxi@lists.linux.dev S: Maintained F: Documentation/devicetree/bindings/mfd/x-powers,ac200.yaml F: drivers/mfd/ac200.c +F: include/dt-bindings/mfd/x-powers,ac200.h X-POWERS AXP288 PMIC DRIVERS M: Hans de Goede diff --git a/include/dt-bindings/mfd/x-powers,ac200.h b/include/dt-bindings/mfd/x-powers,ac200.h new file mode 100644 index 000000000000..cc59e2ab4912 --- /dev/null +++ b/include/dt-bindings/mfd/x-powers,ac200.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Interrupt numbers of the X-Powers AC200 interrupt controller. + */ + +#ifndef _DT_BINDINGS_MFD_X_POWERS_AC200_H +#define _DT_BINDINGS_MFD_X_POWERS_AC200_H + +#define AC200_IRQ_TVE 0 +#define AC200_IRQ_EPHY 1 +#define AC200_IRQ_RTC 2 + +#endif /* _DT_BINDINGS_MFD_X_POWERS_AC200_H */ From patchwork Thu Sep 3 20:09:43 2026 Content-Type: text/plain; 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[184.96.151.165]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4b971246d9csm252885b6e.7.2026.09.03.13.09.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 13:09:56 -0700 (PDT) From: James Hilliard Date: Thu, 03 Sep 2026 14:09:43 -0600 Subject: [PATCH v9 4/4] mfd: ac200: Add codec and TV encoder cells Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20260903-submit-ac200-mfd-v9-4-6b7ed278989c@gmail.com> References: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> In-Reply-To: <20260903-submit-ac200-mfd-v9-0-6b7ed278989c@gmail.com> To: Lee Jones , Arnd Bergmann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , James Hilliard Cc: Andrew Lunn , "Jagielski, Jedrzej" , Andre Przywara , Chen-Yu Tsai , Jernej Skrabec , linux-sunxi@lists.linux.dev, mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.15.2 X-Rspamd-Server: rspamd-worker-8404 X-Spamd-Result: default: False [4.34 / 15.00]; RBL_SENDERSCORE(2.00)[172.234.253.10:from]; SUSPICIOUS_RECIPS(1.50)[]; DMARC_POLICY_SOFTFAIL(1.00)[gmail.com : SPF not aligned (relaxed), No valid DKIM,none]; MAILLIST(-0.15)[generic]; BAD_REP_POLICIES(0.10)[]; MIME_GOOD(-0.10)[text/plain]; HAS_LIST_UNSUB(-0.01)[]; PRECEDENCE_BULK(0.00)[]; TAGGED_RCPT(0.00)[dt]; FROM_HAS_DN(0.00)[]; FORGED_SENDER_MAILLIST(0.00)[]; RCVD_COUNT_FIVE(0.00)[6]; FREEMAIL_CC(0.00)[lunn.ch,intel.com,arm.com,kernel.org,gmail.com,lists.linux.dev,vger.kernel.org]; DBL_BLOCKED_OPENRESOLVER(0.00)[sea.lore.kernel.org:rdns,sea.lore.kernel.org:helo,arm.com:email]; RCPT_COUNT_TWELVE(0.00)[15]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; FROM_NEQ_ENVFROM(0.00)[jameshilliard1@gmail.com,linux-sunxi@lists.linux.dev]; TAGGED_FROM(0.00)[bounces-25547-noreply=patchwork.local]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(0.00)[+ip4:172.234.253.10]; TO_DN_SOME(0.00)[]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[172.234.253.10:from]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[100.90.174.1:received]; ASN(0.00)[asn:63949, ipnet:172.234.224.0/19, country:SG]; FREEMAIL_TO(0.00)[kernel.org,arndb.de,gmail.com]; MIME_TRACE(0.00)[0:+]; MID_RHS_MATCH_FROM(0.00)[]; RECEIVED_SPAMHAUS_PBL(0.00)[184.96.151.165:received]; ARC_ALLOW(0.00)[subspace.kernel.org:s=arc-20240116:i=1]; RCVD_TLS_LAST(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[] X-Rspamd-Queue-Id: DE1761C15C9 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= From: Jernej Skrabec Register the AC200 audio codec and TV encoder as MFD cells when their enabled child nodes are present. Filtering the cell list avoids creating unused platform devices, or warnings about missing firmware nodes, on boards which use only the separately enumerated MDIO PHY. Add a regmap IRQ controller for the shared level-triggered INTB output so the TV encoder can consume its cable-detection interrupt. The source function remains responsible for clearing its interrupt condition. Signed-off-by: Jernej Skrabec Signed-off-by: Andre Przywara Signed-off-by: James Hilliard --- drivers/mfd/Kconfig | 5 ++- drivers/mfd/ac200.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 122 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 6dea35c8c18e..5193c6f71bd8 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -210,12 +210,15 @@ config MFD_AC200 depends on COMMON_CLK depends on I2C depends on OF + select MFD_CORE select REGMAP_I2C + select REGMAP_IRQ help Support for the X-Powers AC200 mixed-signal companion IC. The AC200 contains audio, video, RTC and Fast Ethernet PHY functions and is co-packaged with some Allwinner H6 and H616 SoCs. This driver provides - the shared register access used by the individual function drivers. + the shared register access and instantiates the individual function + devices. config MFD_AXP20X tristate diff --git a/drivers/mfd/ac200.c b/drivers/mfd/ac200.c index 94aa13deb0f8..f7d818141d9c 100644 --- a/drivers/mfd/ac200.c +++ b/drivers/mfd/ac200.c @@ -9,11 +9,24 @@ #include #include #include +#include +#include +#include #include +#include #include +#include + #define AC200_SYS_CONTROL_REG 0x0002 #define AC200_SYS_CONTROL_CHIP_RESET_DEASSERT BIT(0) +#define AC200_SYS_IRQ_ENABLE_REG 0x0004 +#define AC200_SYS_IRQ_INTB_ENABLE BIT(15) +#define AC200_SYS_IRQ_INTB_ACTIVE_HIGH BIT(14) +#define AC200_SYS_IRQ_RTC BIT(12) +#define AC200_SYS_IRQ_EPHY BIT(8) +#define AC200_SYS_IRQ_TVE BIT(4) +#define AC200_SYS_IRQ_STATUS_REG 0x0006 /* Interface register accessible from every register page. */ #define AC200_TWI_REG_ADDR_H 0x00fe @@ -51,6 +64,103 @@ static const struct regmap_config ac200_regmap_config = { .cache_type = REGCACHE_MAPLE, }; +static const struct regmap_irq ac200_irqs[] = { + REGMAP_IRQ_REG(AC200_IRQ_TVE, 0, AC200_SYS_IRQ_TVE), + REGMAP_IRQ_REG(AC200_IRQ_EPHY, 0, AC200_SYS_IRQ_EPHY), + REGMAP_IRQ_REG(AC200_IRQ_RTC, 0, AC200_SYS_IRQ_RTC), +}; + +/* + * SYS_IRQ_ENABLE is an enable register rather than a mask register, hence + * unmask_base. SYS_IRQ_STATUS reflects the source levels, so the function + * which raised an interrupt is responsible for clearing it. + */ +static const struct regmap_irq_chip ac200_irq_chip = { + .name = "ac200", + .status_base = AC200_SYS_IRQ_STATUS_REG, + .unmask_base = AC200_SYS_IRQ_ENABLE_REG, + .num_regs = 1, + .irqs = ac200_irqs, + .num_irqs = ARRAY_SIZE(ac200_irqs), +}; + +static const struct mfd_cell ac200_cells[] = { + { + .name = "ac200-codec", + .of_compatible = "x-powers,ac200-codec", + }, { + .name = "ac200-tve", + .of_compatible = "x-powers,ac200-tve", + }, +}; + +static int ac200_init_irq(struct device *dev, struct regmap *regmap, int irq) +{ + struct regmap_irq_chip_data *irq_data; + unsigned int trigger; + u16 value = AC200_SYS_IRQ_INTB_ENABLE; + int ret; + + trigger = irq_get_trigger_type(irq); + switch (trigger) { + case IRQ_TYPE_LEVEL_HIGH: + value |= AC200_SYS_IRQ_INTB_ACTIVE_HIGH; + break; + case IRQ_TYPE_NONE: + case IRQ_TYPE_LEVEL_LOW: + break; + default: + return dev_err_probe(dev, -EINVAL, + "INTB is level triggered, not type %u\n", + trigger); + } + + ret = regmap_update_bits(regmap, AC200_SYS_IRQ_ENABLE_REG, + AC200_SYS_IRQ_INTB_ENABLE | + AC200_SYS_IRQ_INTB_ACTIVE_HIGH, value); + if (ret) + return ret; + + ret = devm_regmap_add_irq_chip(dev, regmap, irq, IRQF_ONESHOT, 0, + &ac200_irq_chip, &irq_data); + if (ret) + return dev_err_probe(dev, ret, "failed to add IRQ chip\n"); + + return 0; +} + +static int ac200_add_devices(struct device *dev) +{ + struct mfd_cell cells[ARRAY_SIZE(ac200_cells)]; + unsigned int num_cells = 0; + unsigned int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(ac200_cells); i++) { + const struct mfd_cell *cell = &ac200_cells[i]; + struct device_node *child; + + child = of_get_compatible_child(dev->of_node, + cell->of_compatible); + if (!child) + continue; + if (of_device_is_available(child)) + cells[num_cells++] = *cell; + of_node_put(child); + } + + if (!num_cells) + return 0; + + ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, cells, num_cells, + NULL, 0, NULL); + if (ret) + return dev_err_probe(dev, ret, + "failed to add function devices\n"); + + return 0; +} + static int ac200_probe(struct i2c_client *client) { struct device *dev = &client->dev; @@ -83,7 +193,13 @@ static int ac200_probe(struct i2c_client *client) if (ret) return ret; - return 0; + if (client->irq > 0) { + ret = ac200_init_irq(dev, regmap, client->irq); + if (ret) + return ret; + } + + return ac200_add_devices(dev); } static const struct of_device_id ac200_of_match[] = { @@ -108,6 +224,7 @@ static struct i2c_driver ac200_driver = { }; module_i2c_driver(ac200_driver); +MODULE_AUTHOR("Jernej Skrabec "); MODULE_AUTHOR("James Hilliard "); MODULE_DESCRIPTION("X-Powers AC200 MFD core driver"); MODULE_LICENSE("GPL");